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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2021 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 #include <linux/crash_dump.h>
  10
  11 /* Local includes */
  12 #include "i40e.h"
  13 #include "i40e_diag.h"
  14 #include "i40e_xsk.h"
  15 #include <net/udp_tunnel.h>
  16 #include <net/xdp_sock_drv.h>
  17 /* All i40e tracepoints are defined by the include below, which
  18  * must be included exactly once across the whole kernel with
  19  * CREATE_TRACE_POINTS defined
  20  */
  21 #define CREATE_TRACE_POINTS
  22 #include "i40e_trace.h"
  23
  24 const char i40e_driver_name[] = "i40e";
  25 static const char i40e_driver_string[] =
  26                         "Intel(R) Ethernet Connection XL710 Network Driver";
  27
  28 static const char i40e_copyright[] = "Copyright (c) 2013 - 2019 Intel Corporation.";
  29
  30 /* a bit of forward declarations */
  31 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  32 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
  33 static int i40e_add_vsi(struct i40e_vsi *vsi);
  34 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  35 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  36 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  37 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  38 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  39 static void i40e_prep_for_reset(struct i40e_pf *pf);
  40 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
  41                                    bool lock_acquired);
  42 static int i40e_reset(struct i40e_pf *pf);
  43 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  44 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf);
  45 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf);
  46 static bool i40e_check_recovery_mode(struct i40e_pf *pf);
  47 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw);
  48 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  49 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  50 static int i40e_get_capabilities(struct i40e_pf *pf,
  51                                  enum i40e_admin_queue_opc list_type);
  52 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf);
  53
  54 /* i40e_pci_tbl - PCI Device ID Table
  55  *
  56  * Last entry must be all 0s
  57  *
  58  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  59  *   Class, Class Mask, private data (not used) }
  60  */
  61 static const struct pci_device_id i40e_pci_tbl[] = {
  62         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  63         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  64         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  65         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  66         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  67         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  68         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_BC), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_BC), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_SFP), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_B), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722_A), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_X710_N3000), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_XXV710_N3000), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  88         /* required last entry */
  89         {0, }
  90 };
  91 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  92
  93 #define I40E_MAX_VF_COUNT 128
  94 static int debug = -1;
  95 module_param(debug, uint, 0);
  96 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  97
  98 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  99 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 100 MODULE_LICENSE("GPL v2");
 101
 102 static struct workqueue_struct *i40e_wq;
 103
 104 static void netdev_hw_addr_refcnt(struct i40e_mac_filter *f,
 105                                   struct net_device *netdev, int delta)
 106 {
 107         struct netdev_hw_addr *ha;
 108
 109         if (!f || !netdev)
 110                 return;
 111
 112         netdev_for_each_mc_addr(ha, netdev) {
 113                 if (ether_addr_equal(ha->addr, f->macaddr)) {
 114                         ha->refcount += delta;
 115                         if (ha->refcount <= 0)
 116                                 ha->refcount = 1;
 117                         break;
 118                 }
 119         }
 120 }
 121
 122 /**
 123  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 124  * @hw:   pointer to the HW structure
 125  * @mem:  ptr to mem struct to fill out
 126  * @size: size of memory requested
 127  * @alignment: what to align the allocation to
 128  **/
 129 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 130                             u64 size, u32 alignment)
 131 {
 132         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 133
 134         mem->size = ALIGN(size, alignment);
 135         mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
 136                                      GFP_KERNEL);
 137         if (!mem->va)
 138                 return -ENOMEM;
 139
 140         return 0;
 141 }
 142
 143 /**
 144  * i40e_free_dma_mem_d - OS specific memory free for shared code
 145  * @hw:   pointer to the HW structure
 146  * @mem:  ptr to mem struct to free
 147  **/
 148 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 149 {
 150         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 151
 152         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 153         mem->va = NULL;
 154         mem->pa = 0;
 155         mem->size = 0;
 156
 157         return 0;
 158 }
 159
 160 /**
 161  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 162  * @hw:   pointer to the HW structure
 163  * @mem:  ptr to mem struct to fill out
 164  * @size: size of memory requested
 165  **/
 166 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 167                              u32 size)
 168 {
 169         mem->size = size;
 170         mem->va = kzalloc(size, GFP_KERNEL);
 171
 172         if (!mem->va)
 173                 return -ENOMEM;
 174
 175         return 0;
 176 }
 177
 178 /**
 179  * i40e_free_virt_mem_d - OS specific memory free for shared code
 180  * @hw:   pointer to the HW structure
 181  * @mem:  ptr to mem struct to free
 182  **/
 183 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 184 {
 185         /* it's ok to kfree a NULL pointer */
 186         kfree(mem->va);
 187         mem->va = NULL;
 188         mem->size = 0;
 189
 190         return 0;
 191 }
 192
 193 /**
 194  * i40e_get_lump - find a lump of free generic resource
 195  * @pf: board private structure
 196  * @pile: the pile of resource to search
 197  * @needed: the number of items needed
 198  * @id: an owner id to stick on the items assigned
 199  *
 200  * Returns the base item index of the lump, or negative for error
 201  **/
 202 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 203                          u16 needed, u16 id)
 204 {
 205         int ret = -ENOMEM;
 206         int i, j;
 207
 208         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 209                 dev_info(&pf->pdev->dev,
 210                          "param err: pile=%s needed=%d id=0x%04x\n",
 211                          pile ? "<valid>" : "<null>", needed, id);
 212                 return -EINVAL;
 213         }
 214
 215         /* Allocate last queue in the pile for FDIR VSI queue
 216          * so it doesn't fragment the qp_pile
 217          */
 218         if (pile == pf->qp_pile && pf->vsi[id]->type == I40E_VSI_FDIR) {
 219                 if (pile->list[pile->num_entries - 1] & I40E_PILE_VALID_BIT) {
 220                         dev_err(&pf->pdev->dev,
 221                                 "Cannot allocate queue %d for I40E_VSI_FDIR\n",
 222                                 pile->num_entries - 1);
 223                         return -ENOMEM;
 224                 }
 225                 pile->list[pile->num_entries - 1] = id | I40E_PILE_VALID_BIT;
 226                 return pile->num_entries - 1;
 227         }
 228
 229         i = 0;
 230         while (i < pile->num_entries) {
 231                 /* skip already allocated entries */
 232                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 233                         i++;
 234                         continue;
 235                 }
 236
 237                 /* do we have enough in this lump? */
 238                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 239                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 240                                 break;
 241                 }
 242
 243                 if (j == needed) {
 244                         /* there was enough, so assign it to the requestor */
 245                         for (j = 0; j < needed; j++)
 246                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 247                         ret = i;
 248                         break;
 249                 }
 250
 251                 /* not enough, so skip over it and continue looking */
 252                 i += j;
 253         }
 254
 255         return ret;
 256 }
 257
 258 /**
 259  * i40e_put_lump - return a lump of generic resource
 260  * @pile: the pile of resource to search
 261  * @index: the base item index
 262  * @id: the owner id of the items assigned
 263  *
 264  * Returns the count of items in the lump
 265  **/
 266 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 267 {
 268         int valid_id = (id | I40E_PILE_VALID_BIT);
 269         int count = 0;
 270         u16 i;
 271
 272         if (!pile || index >= pile->num_entries)
 273                 return -EINVAL;
 274
 275         for (i = index;
 276              i < pile->num_entries && pile->list[i] == valid_id;
 277              i++) {
 278                 pile->list[i] = 0;
 279                 count++;
 280         }
 281
 282
 283         return count;
 284 }
 285
 286 /**
 287  * i40e_find_vsi_from_id - searches for the vsi with the given id
 288  * @pf: the pf structure to search for the vsi
 289  * @id: id of the vsi it is searching for
 290  **/
 291 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 292 {
 293         int i;
 294
 295         for (i = 0; i < pf->num_alloc_vsi; i++)
 296                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 297                         return pf->vsi[i];
 298
 299         return NULL;
 300 }
 301
 302 /**
 303  * i40e_service_event_schedule - Schedule the service task to wake up
 304  * @pf: board private structure
 305  *
 306  * If not already scheduled, this puts the task into the work queue
 307  **/
 308 void i40e_service_event_schedule(struct i40e_pf *pf)
 309 {
 310         if ((!test_bit(__I40E_DOWN, pf->state) &&
 311              !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) ||
 312               test_bit(__I40E_RECOVERY_MODE, pf->state))
 313                 queue_work(i40e_wq, &pf->service_task);
 314 }
 315
 316 /**
 317  * i40e_tx_timeout - Respond to a Tx Hang
 318  * @netdev: network interface device structure
 319  * @txqueue: queue number timing out
 320  *
 321  * If any port has noticed a Tx timeout, it is likely that the whole
 322  * device is munged, not just the one netdev port, so go for the full
 323  * reset.
 324  **/
 325 static void i40e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 326 {
 327         struct i40e_netdev_priv *np = netdev_priv(netdev);
 328         struct i40e_vsi *vsi = np->vsi;
 329         struct i40e_pf *pf = vsi->back;
 330         struct i40e_ring *tx_ring = NULL;
 331         unsigned int i;
 332         u32 head, val;
 333
 334         pf->tx_timeout_count++;
 335
 336         /* with txqueue index, find the tx_ring struct */
 337         for (i = 0; i < vsi->num_queue_pairs; i++) {
 338                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 339                         if (txqueue ==
 340                             vsi->tx_rings[i]->queue_index) {
 341                                 tx_ring = vsi->tx_rings[i];
 342                                 break;
 343                         }
 344                 }
 345         }
 346
 347         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 348                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 349         else if (time_before(jiffies,
 350                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 351                 return;   /* don't do any new action before the next timeout */
 352
 353         /* don't kick off another recovery if one is already pending */
 354         if (test_and_set_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state))
 355                 return;
 356
 357         if (tx_ring) {
 358                 head = i40e_get_head(tx_ring);
 359                 /* Read interrupt register */
 360                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 361                         val = rd32(&pf->hw,
 362                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 363                                                 tx_ring->vsi->base_vector - 1));
 364                 else
 365                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 366
 367                 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",
 368                             vsi->seid, txqueue, tx_ring->next_to_clean,
 369                             head, tx_ring->next_to_use,
 370                             readl(tx_ring->tail), val);
 371         }
 372
 373         pf->tx_timeout_last_recovery = jiffies;
 374         netdev_info(netdev, "tx_timeout recovery level %d, txqueue %d\n",
 375                     pf->tx_timeout_recovery_level, txqueue);
 376
 377         switch (pf->tx_timeout_recovery_level) {
 378         case 1:
 379                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 380                 break;
 381         case 2:
 382                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
 383                 break;
 384         case 3:
 385                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
 386                 break;
 387         default:
 388                 netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in non-recoverable state.\n");
 389                 set_bit(__I40E_DOWN_REQUESTED, pf->state);
 390                 set_bit(__I40E_VSI_DOWN_REQUESTED, vsi->state);
 391                 break;
 392         }
 393
 394         i40e_service_event_schedule(pf);
 395         pf->tx_timeout_recovery_level++;
 396 }
 397
 398 /**
 399  * i40e_get_vsi_stats_struct - Get System Network Statistics
 400  * @vsi: the VSI we care about
 401  *
 402  * Returns the address of the device statistics structure.
 403  * The statistics are actually updated from the service task.
 404  **/
 405 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 406 {
 407         return &vsi->net_stats;
 408 }
 409
 410 /**
 411  * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
 412  * @ring: Tx ring to get statistics from
 413  * @stats: statistics entry to be updated
 414  **/
 415 static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
 416                                             struct rtnl_link_stats64 *stats)
 417 {
 418         u64 bytes, packets;
 419         unsigned int start;
 420
 421         do {
 422                 start = u64_stats_fetch_begin(&ring->syncp);
 423                 packets = ring->stats.packets;
 424                 bytes   = ring->stats.bytes;
 425         } while (u64_stats_fetch_retry(&ring->syncp, start));
 426
 427         stats->tx_packets += packets;
 428         stats->tx_bytes   += bytes;
 429 }
 430
 431 /**
 432  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 433  * @netdev: network interface device structure
 434  * @stats: data structure to store statistics
 435  *
 436  * Returns the address of the device statistics structure.
 437  * The statistics are actually updated from the service task.
 438  **/
 439 static void i40e_get_netdev_stats_struct(struct net_device *netdev,
 440                                   struct rtnl_link_stats64 *stats)
 441 {
 442         struct i40e_netdev_priv *np = netdev_priv(netdev);
 443         struct i40e_vsi *vsi = np->vsi;
 444         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 445         struct i40e_ring *ring;
 446         int i;
 447
 448         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 449                 return;
 450
 451         if (!vsi->tx_rings)
 452                 return;
 453
 454         rcu_read_lock();
 455         for (i = 0; i < vsi->num_queue_pairs; i++) {
 456                 u64 bytes, packets;
 457                 unsigned int start;
 458
 459                 ring = READ_ONCE(vsi->tx_rings[i]);
 460                 if (!ring)
 461                         continue;
 462                 i40e_get_netdev_stats_struct_tx(ring, stats);
 463
 464                 if (i40e_enabled_xdp_vsi(vsi)) {
 465                         ring = READ_ONCE(vsi->xdp_rings[i]);
 466                         if (!ring)
 467                                 continue;
 468                         i40e_get_netdev_stats_struct_tx(ring, stats);
 469                 }
 470
 471                 ring = READ_ONCE(vsi->rx_rings[i]);
 472                 if (!ring)
 473                         continue;
 474                 do {
 475                         start   = u64_stats_fetch_begin(&ring->syncp);
 476                         packets = ring->stats.packets;
 477                         bytes   = ring->stats.bytes;
 478                 } while (u64_stats_fetch_retry(&ring->syncp, start));
 479
 480                 stats->rx_packets += packets;
 481                 stats->rx_bytes   += bytes;
 482
 483         }
 484         rcu_read_unlock();
 485
 486         /* following stats updated by i40e_watchdog_subtask() */
 487         stats->multicast        = vsi_stats->multicast;
 488         stats->tx_errors        = vsi_stats->tx_errors;
 489         stats->tx_dropped       = vsi_stats->tx_dropped;
 490         stats->rx_errors        = vsi_stats->rx_errors;
 491         stats->rx_dropped       = vsi_stats->rx_dropped;
 492         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 493         stats->rx_length_errors = vsi_stats->rx_length_errors;
 494 }
 495
 496 /**
 497  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 498  * @vsi: the VSI to have its stats reset
 499  **/
 500 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 501 {
 502         struct rtnl_link_stats64 *ns;
 503         int i;
 504
 505         if (!vsi)
 506                 return;
 507
 508         ns = i40e_get_vsi_stats_struct(vsi);
 509         memset(ns, 0, sizeof(*ns));
 510         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 511         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 512         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 513         if (vsi->rx_rings && vsi->rx_rings[0]) {
 514                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 515                         memset(&vsi->rx_rings[i]->stats, 0,
 516                                sizeof(vsi->rx_rings[i]->stats));
 517                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 518                                sizeof(vsi->rx_rings[i]->rx_stats));
 519                         memset(&vsi->tx_rings[i]->stats, 0,
 520                                sizeof(vsi->tx_rings[i]->stats));
 521                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 522                                sizeof(vsi->tx_rings[i]->tx_stats));
 523                 }
 524         }
 525         vsi->stat_offsets_loaded = false;
 526 }
 527
 528 /**
 529  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 530  * @pf: the PF to be reset
 531  **/
 532 void i40e_pf_reset_stats(struct i40e_pf *pf)
 533 {
 534         int i;
 535
 536         memset(&pf->stats, 0, sizeof(pf->stats));
 537         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 538         pf->stat_offsets_loaded = false;
 539
 540         for (i = 0; i < I40E_MAX_VEB; i++) {
 541                 if (pf->veb[i]) {
 542                         memset(&pf->veb[i]->stats, 0,
 543                                sizeof(pf->veb[i]->stats));
 544                         memset(&pf->veb[i]->stats_offsets, 0,
 545                                sizeof(pf->veb[i]->stats_offsets));
 546                         memset(&pf->veb[i]->tc_stats, 0,
 547                                sizeof(pf->veb[i]->tc_stats));
 548                         memset(&pf->veb[i]->tc_stats_offsets, 0,
 549                                sizeof(pf->veb[i]->tc_stats_offsets));
 550                         pf->veb[i]->stat_offsets_loaded = false;
 551                 }
 552         }
 553         pf->hw_csum_rx_error = 0;
 554 }
 555
 556 /**
 557  * i40e_compute_pci_to_hw_id - compute index form PCI function.
 558  * @vsi: ptr to the VSI to read from.
 559  * @hw: ptr to the hardware info.
 560  **/
 561 static u32 i40e_compute_pci_to_hw_id(struct i40e_vsi *vsi, struct i40e_hw *hw)
 562 {
 563         int pf_count = i40e_get_pf_count(hw);
 564
 565         if (vsi->type == I40E_VSI_SRIOV)
 566                 return (hw->port * BIT(7)) / pf_count + vsi->vf_id;
 567
 568         return hw->port + BIT(7);
 569 }
 570
 571 /**
 572  * i40e_stat_update64 - read and update a 64 bit stat from the chip.
 573  * @hw: ptr to the hardware info.
 574  * @hireg: the high 32 bit reg to read.
 575  * @loreg: the low 32 bit reg to read.
 576  * @offset_loaded: has the initial offset been loaded yet.
 577  * @offset: ptr to current offset value.
 578  * @stat: ptr to the stat.
 579  *
 580  * Since the device stats are not reset at PFReset, they will not
 581  * be zeroed when the driver starts.  We'll save the first values read
 582  * and use them as offsets to be subtracted from the raw values in order
 583  * to report stats that count from zero.
 584  **/
 585 static void i40e_stat_update64(struct i40e_hw *hw, u32 hireg, u32 loreg,
 586                                bool offset_loaded, u64 *offset, u64 *stat)
 587 {
 588         u64 new_data;
 589
 590         new_data = rd64(hw, loreg);
 591
 592         if (!offset_loaded || new_data < *offset)
 593                 *offset = new_data;
 594         *stat = new_data - *offset;
 595 }
 596
 597 /**
 598  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 599  * @hw: ptr to the hardware info
 600  * @hireg: the high 32 bit reg to read
 601  * @loreg: the low 32 bit reg to read
 602  * @offset_loaded: has the initial offset been loaded yet
 603  * @offset: ptr to current offset value
 604  * @stat: ptr to the stat
 605  *
 606  * Since the device stats are not reset at PFReset, they likely will not
 607  * be zeroed when the driver starts.  We'll save the first values read
 608  * and use them as offsets to be subtracted from the raw values in order
 609  * to report stats that count from zero.  In the process, we also manage
 610  * the potential roll-over.
 611  **/
 612 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 613                                bool offset_loaded, u64 *offset, u64 *stat)
 614 {
 615         u64 new_data;
 616
 617         if (hw->device_id == I40E_DEV_ID_QEMU) {
 618                 new_data = rd32(hw, loreg);
 619                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 620         } else {
 621                 new_data = rd64(hw, loreg);
 622         }
 623         if (!offset_loaded)
 624                 *offset = new_data;
 625         if (likely(new_data >= *offset))
 626                 *stat = new_data - *offset;
 627         else
 628                 *stat = (new_data + BIT_ULL(48)) - *offset;
 629         *stat &= 0xFFFFFFFFFFFFULL;
 630 }
 631
 632 /**
 633  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 634  * @hw: ptr to the hardware info
 635  * @reg: the hw reg to read
 636  * @offset_loaded: has the initial offset been loaded yet
 637  * @offset: ptr to current offset value
 638  * @stat: ptr to the stat
 639  **/
 640 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 641                                bool offset_loaded, u64 *offset, u64 *stat)
 642 {
 643         u32 new_data;
 644
 645         new_data = rd32(hw, reg);
 646         if (!offset_loaded)
 647                 *offset = new_data;
 648         if (likely(new_data >= *offset))
 649                 *stat = (u32)(new_data - *offset);
 650         else
 651                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 652 }
 653
 654 /**
 655  * i40e_stat_update_and_clear32 - read and clear hw reg, update a 32 bit stat
 656  * @hw: ptr to the hardware info
 657  * @reg: the hw reg to read and clear
 658  * @stat: ptr to the stat
 659  **/
 660 static void i40e_stat_update_and_clear32(struct i40e_hw *hw, u32 reg, u64 *stat)
 661 {
 662         u32 new_data = rd32(hw, reg);
 663
 664         wr32(hw, reg, 1); /* must write a nonzero value to clear register */
 665         *stat += new_data;
 666 }
 667
 668 /**
 669  * i40e_stats_update_rx_discards - update rx_discards.
 670  * @vsi: ptr to the VSI to be updated.
 671  * @hw: ptr to the hardware info.
 672  * @stat_idx: VSI's stat_counter_idx.
 673  * @offset_loaded: ptr to the VSI's stat_offsets_loaded.
 674  * @stat_offset: ptr to stat_offset to store first read of specific register.
 675  * @stat: ptr to VSI's stat to be updated.
 676  **/
 677 static void
 678 i40e_stats_update_rx_discards(struct i40e_vsi *vsi, struct i40e_hw *hw,
 679                               int stat_idx, bool offset_loaded,
 680                               struct i40e_eth_stats *stat_offset,
 681                               struct i40e_eth_stats *stat)
 682 {
 683         u64 rx_rdpc, rx_rxerr;
 684
 685         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx), offset_loaded,
 686                            &stat_offset->rx_discards, &rx_rdpc);
 687         i40e_stat_update64(hw,
 688                            I40E_GL_RXERR1H(i40e_compute_pci_to_hw_id(vsi, hw)),
 689                            I40E_GL_RXERR1L(i40e_compute_pci_to_hw_id(vsi, hw)),
 690                            offset_loaded, &stat_offset->rx_discards_other,
 691                            &rx_rxerr);
 692
 693         stat->rx_discards = rx_rdpc + rx_rxerr;
 694 }
 695
 696 /**
 697  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 698  * @vsi: the VSI to be updated
 699  **/
 700 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 701 {
 702         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 703         struct i40e_pf *pf = vsi->back;
 704         struct i40e_hw *hw = &pf->hw;
 705         struct i40e_eth_stats *oes;
 706         struct i40e_eth_stats *es;     /* device's eth stats */
 707
 708         es = &vsi->eth_stats;
 709         oes = &vsi->eth_stats_offsets;
 710
 711         /* Gather up the stats that the hw collects */
 712         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 713                            vsi->stat_offsets_loaded,
 714                            &oes->tx_errors, &es->tx_errors);
 715         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 716                            vsi->stat_offsets_loaded,
 717                            &oes->rx_discards, &es->rx_discards);
 718         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 719                            vsi->stat_offsets_loaded,
 720                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 721
 722         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 723                            I40E_GLV_GORCL(stat_idx),
 724                            vsi->stat_offsets_loaded,
 725                            &oes->rx_bytes, &es->rx_bytes);
 726         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 727                            I40E_GLV_UPRCL(stat_idx),
 728                            vsi->stat_offsets_loaded,
 729                            &oes->rx_unicast, &es->rx_unicast);
 730         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 731                            I40E_GLV_MPRCL(stat_idx),
 732                            vsi->stat_offsets_loaded,
 733                            &oes->rx_multicast, &es->rx_multicast);
 734         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 735                            I40E_GLV_BPRCL(stat_idx),
 736                            vsi->stat_offsets_loaded,
 737                            &oes->rx_broadcast, &es->rx_broadcast);
 738
 739         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 740                            I40E_GLV_GOTCL(stat_idx),
 741                            vsi->stat_offsets_loaded,
 742                            &oes->tx_bytes, &es->tx_bytes);
 743         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 744                            I40E_GLV_UPTCL(stat_idx),
 745                            vsi->stat_offsets_loaded,
 746                            &oes->tx_unicast, &es->tx_unicast);
 747         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 748                            I40E_GLV_MPTCL(stat_idx),
 749                            vsi->stat_offsets_loaded,
 750                            &oes->tx_multicast, &es->tx_multicast);
 751         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 752                            I40E_GLV_BPTCL(stat_idx),
 753                            vsi->stat_offsets_loaded,
 754                            &oes->tx_broadcast, &es->tx_broadcast);
 755
 756         i40e_stats_update_rx_discards(vsi, hw, stat_idx,
 757                                       vsi->stat_offsets_loaded, oes, es);
 758
 759         vsi->stat_offsets_loaded = true;
 760 }
 761
 762 /**
 763  * i40e_update_veb_stats - Update Switch component statistics
 764  * @veb: the VEB being updated
 765  **/
 766 void i40e_update_veb_stats(struct i40e_veb *veb)
 767 {
 768         struct i40e_pf *pf = veb->pf;
 769         struct i40e_hw *hw = &pf->hw;
 770         struct i40e_eth_stats *oes;
 771         struct i40e_eth_stats *es;     /* device's eth stats */
 772         struct i40e_veb_tc_stats *veb_oes;
 773         struct i40e_veb_tc_stats *veb_es;
 774         int i, idx = 0;
 775
 776         idx = veb->stats_idx;
 777         es = &veb->stats;
 778         oes = &veb->stats_offsets;
 779         veb_es = &veb->tc_stats;
 780         veb_oes = &veb->tc_stats_offsets;
 781
 782         /* Gather up the stats that the hw collects */
 783         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 784                            veb->stat_offsets_loaded,
 785                            &oes->tx_discards, &es->tx_discards);
 786         if (hw->revision_id > 0)
 787                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 788                                    veb->stat_offsets_loaded,
 789                                    &oes->rx_unknown_protocol,
 790                                    &es->rx_unknown_protocol);
 791         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 792                            veb->stat_offsets_loaded,
 793                            &oes->rx_bytes, &es->rx_bytes);
 794         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 795                            veb->stat_offsets_loaded,
 796                            &oes->rx_unicast, &es->rx_unicast);
 797         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 798                            veb->stat_offsets_loaded,
 799                            &oes->rx_multicast, &es->rx_multicast);
 800         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 801                            veb->stat_offsets_loaded,
 802                            &oes->rx_broadcast, &es->rx_broadcast);
 803
 804         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 805                            veb->stat_offsets_loaded,
 806                            &oes->tx_bytes, &es->tx_bytes);
 807         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 808                            veb->stat_offsets_loaded,
 809                            &oes->tx_unicast, &es->tx_unicast);
 810         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 811                            veb->stat_offsets_loaded,
 812                            &oes->tx_multicast, &es->tx_multicast);
 813         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 814                            veb->stat_offsets_loaded,
 815                            &oes->tx_broadcast, &es->tx_broadcast);
 816         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 817                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 818                                    I40E_GLVEBTC_RPCL(i, idx),
 819                                    veb->stat_offsets_loaded,
 820                                    &veb_oes->tc_rx_packets[i],
 821                                    &veb_es->tc_rx_packets[i]);
 822                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 823                                    I40E_GLVEBTC_RBCL(i, idx),
 824                                    veb->stat_offsets_loaded,
 825                                    &veb_oes->tc_rx_bytes[i],
 826                                    &veb_es->tc_rx_bytes[i]);
 827                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 828                                    I40E_GLVEBTC_TPCL(i, idx),
 829                                    veb->stat_offsets_loaded,
 830                                    &veb_oes->tc_tx_packets[i],
 831                                    &veb_es->tc_tx_packets[i]);
 832                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 833                                    I40E_GLVEBTC_TBCL(i, idx),
 834                                    veb->stat_offsets_loaded,
 835                                    &veb_oes->tc_tx_bytes[i],
 836                                    &veb_es->tc_tx_bytes[i]);
 837         }
 838         veb->stat_offsets_loaded = true;
 839 }
 840
 841 /**
 842  * i40e_update_vsi_stats - Update the vsi statistics counters.
 843  * @vsi: the VSI to be updated
 844  *
 845  * There are a few instances where we store the same stat in a
 846  * couple of different structs.  This is partly because we have
 847  * the netdev stats that need to be filled out, which is slightly
 848  * different from the "eth_stats" defined by the chip and used in
 849  * VF communications.  We sort it out here.
 850  **/
 851 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 852 {
 853         u64 rx_page, rx_buf, rx_reuse, rx_alloc, rx_waive, rx_busy;
 854         struct i40e_pf *pf = vsi->back;
 855         struct rtnl_link_stats64 *ons;
 856         struct rtnl_link_stats64 *ns;   /* netdev stats */
 857         struct i40e_eth_stats *oes;
 858         struct i40e_eth_stats *es;     /* device's eth stats */
 859         u64 tx_restart, tx_busy;
 860         struct i40e_ring *p;
 861         u64 bytes, packets;
 862         unsigned int start;
 863         u64 tx_linearize;
 864         u64 tx_force_wb;
 865         u64 tx_stopped;
 866         u64 rx_p, rx_b;
 867         u64 tx_p, tx_b;
 868         u16 q;
 869
 870         if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
 871             test_bit(__I40E_CONFIG_BUSY, pf->state))
 872                 return;
 873
 874         ns = i40e_get_vsi_stats_struct(vsi);
 875         ons = &vsi->net_stats_offsets;
 876         es = &vsi->eth_stats;
 877         oes = &vsi->eth_stats_offsets;
 878
 879         /* Gather up the netdev and vsi stats that the driver collects
 880          * on the fly during packet processing
 881          */
 882         rx_b = rx_p = 0;
 883         tx_b = tx_p = 0;
 884         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 885         tx_stopped = 0;
 886         rx_page = 0;
 887         rx_buf = 0;
 888         rx_reuse = 0;
 889         rx_alloc = 0;
 890         rx_waive = 0;
 891         rx_busy = 0;
 892         rcu_read_lock();
 893         for (q = 0; q < vsi->num_queue_pairs; q++) {
 894                 /* locate Tx ring */
 895                 p = READ_ONCE(vsi->tx_rings[q]);
 896                 if (!p)
 897                         continue;
 898
 899                 do {
 900                         start = u64_stats_fetch_begin(&p->syncp);
 901                         packets = p->stats.packets;
 902                         bytes = p->stats.bytes;
 903                 } while (u64_stats_fetch_retry(&p->syncp, start));
 904                 tx_b += bytes;
 905                 tx_p += packets;
 906                 tx_restart += p->tx_stats.restart_queue;
 907                 tx_busy += p->tx_stats.tx_busy;
 908                 tx_linearize += p->tx_stats.tx_linearize;
 909                 tx_force_wb += p->tx_stats.tx_force_wb;
 910                 tx_stopped += p->tx_stats.tx_stopped;
 911
 912                 /* locate Rx ring */
 913                 p = READ_ONCE(vsi->rx_rings[q]);
 914                 if (!p)
 915                         continue;
 916
 917                 do {
 918                         start = u64_stats_fetch_begin(&p->syncp);
 919                         packets = p->stats.packets;
 920                         bytes = p->stats.bytes;
 921                 } while (u64_stats_fetch_retry(&p->syncp, start));
 922                 rx_b += bytes;
 923                 rx_p += packets;
 924                 rx_buf += p->rx_stats.alloc_buff_failed;
 925                 rx_page += p->rx_stats.alloc_page_failed;
 926                 rx_reuse += p->rx_stats.page_reuse_count;
 927                 rx_alloc += p->rx_stats.page_alloc_count;
 928                 rx_waive += p->rx_stats.page_waive_count;
 929                 rx_busy += p->rx_stats.page_busy_count;
 930
 931                 if (i40e_enabled_xdp_vsi(vsi)) {
 932                         /* locate XDP ring */
 933                         p = READ_ONCE(vsi->xdp_rings[q]);
 934                         if (!p)
 935                                 continue;
 936
 937                         do {
 938                                 start = u64_stats_fetch_begin(&p->syncp);
 939                                 packets = p->stats.packets;
 940                                 bytes = p->stats.bytes;
 941                         } while (u64_stats_fetch_retry(&p->syncp, start));
 942                         tx_b += bytes;
 943                         tx_p += packets;
 944                         tx_restart += p->tx_stats.restart_queue;
 945                         tx_busy += p->tx_stats.tx_busy;
 946                         tx_linearize += p->tx_stats.tx_linearize;
 947                         tx_force_wb += p->tx_stats.tx_force_wb;
 948                 }
 949         }
 950         rcu_read_unlock();
 951         vsi->tx_restart = tx_restart;
 952         vsi->tx_busy = tx_busy;
 953         vsi->tx_linearize = tx_linearize;
 954         vsi->tx_force_wb = tx_force_wb;
 955         vsi->tx_stopped = tx_stopped;
 956         vsi->rx_page_failed = rx_page;
 957         vsi->rx_buf_failed = rx_buf;
 958         vsi->rx_page_reuse = rx_reuse;
 959         vsi->rx_page_alloc = rx_alloc;
 960         vsi->rx_page_waive = rx_waive;
 961         vsi->rx_page_busy = rx_busy;
 962
 963         ns->rx_packets = rx_p;
 964         ns->rx_bytes = rx_b;
 965         ns->tx_packets = tx_p;
 966         ns->tx_bytes = tx_b;
 967
 968         /* update netdev stats from eth stats */
 969         i40e_update_eth_stats(vsi);
 970         ons->tx_errors = oes->tx_errors;
 971         ns->tx_errors = es->tx_errors;
 972         ons->multicast = oes->rx_multicast;
 973         ns->multicast = es->rx_multicast;
 974         ons->rx_dropped = oes->rx_discards;
 975         ns->rx_dropped = es->rx_discards;
 976         ons->tx_dropped = oes->tx_discards;
 977         ns->tx_dropped = es->tx_discards;
 978
 979         /* pull in a couple PF stats if this is the main vsi */
 980         if (vsi == pf->vsi[pf->lan_vsi]) {
 981                 ns->rx_crc_errors = pf->stats.crc_errors;
 982                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 983                 ns->rx_length_errors = pf->stats.rx_length_errors;
 984         }
 985 }
 986
 987 /**
 988  * i40e_update_pf_stats - Update the PF statistics counters.
 989  * @pf: the PF to be updated
 990  **/
 991 static void i40e_update_pf_stats(struct i40e_pf *pf)
 992 {
 993         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 994         struct i40e_hw_port_stats *nsd = &pf->stats;
 995         struct i40e_hw *hw = &pf->hw;
 996         u32 val;
 997         int i;
 998
 999         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
1000                            I40E_GLPRT_GORCL(hw->port),
1001                            pf->stat_offsets_loaded,
1002                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
1003         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
1004                            I40E_GLPRT_GOTCL(hw->port),
1005                            pf->stat_offsets_loaded,
1006                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
1007         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->eth.rx_discards,
1010                            &nsd->eth.rx_discards);
1011         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
1012                            I40E_GLPRT_UPRCL(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->eth.rx_unicast,
1015                            &nsd->eth.rx_unicast);
1016         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
1017                            I40E_GLPRT_MPRCL(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->eth.rx_multicast,
1020                            &nsd->eth.rx_multicast);
1021         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
1022                            I40E_GLPRT_BPRCL(hw->port),
1023                            pf->stat_offsets_loaded,
1024                            &osd->eth.rx_broadcast,
1025                            &nsd->eth.rx_broadcast);
1026         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
1027                            I40E_GLPRT_UPTCL(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->eth.tx_unicast,
1030                            &nsd->eth.tx_unicast);
1031         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
1032                            I40E_GLPRT_MPTCL(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->eth.tx_multicast,
1035                            &nsd->eth.tx_multicast);
1036         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
1037                            I40E_GLPRT_BPTCL(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->eth.tx_broadcast,
1040                            &nsd->eth.tx_broadcast);
1041
1042         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->tx_dropped_link_down,
1045                            &nsd->tx_dropped_link_down);
1046
1047         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1048                            pf->stat_offsets_loaded,
1049                            &osd->crc_errors, &nsd->crc_errors);
1050
1051         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->illegal_bytes, &nsd->illegal_bytes);
1054
1055         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1056                            pf->stat_offsets_loaded,
1057                            &osd->mac_local_faults,
1058                            &nsd->mac_local_faults);
1059         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1060                            pf->stat_offsets_loaded,
1061                            &osd->mac_remote_faults,
1062                            &nsd->mac_remote_faults);
1063
1064         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1065                            pf->stat_offsets_loaded,
1066                            &osd->rx_length_errors,
1067                            &nsd->rx_length_errors);
1068
1069         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->link_xon_rx, &nsd->link_xon_rx);
1072         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->link_xon_tx, &nsd->link_xon_tx);
1075         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
1078         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1081
1082         for (i = 0; i < 8; i++) {
1083                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
1084                                    pf->stat_offsets_loaded,
1085                                    &osd->priority_xoff_rx[i],
1086                                    &nsd->priority_xoff_rx[i]);
1087                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1088                                    pf->stat_offsets_loaded,
1089                                    &osd->priority_xon_rx[i],
1090                                    &nsd->priority_xon_rx[i]);
1091                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1092                                    pf->stat_offsets_loaded,
1093                                    &osd->priority_xon_tx[i],
1094                                    &nsd->priority_xon_tx[i]);
1095                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1096                                    pf->stat_offsets_loaded,
1097                                    &osd->priority_xoff_tx[i],
1098                                    &nsd->priority_xoff_tx[i]);
1099                 i40e_stat_update32(hw,
1100                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1101                                    pf->stat_offsets_loaded,
1102                                    &osd->priority_xon_2_xoff[i],
1103                                    &nsd->priority_xon_2_xoff[i]);
1104         }
1105
1106         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1107                            I40E_GLPRT_PRC64L(hw->port),
1108                            pf->stat_offsets_loaded,
1109                            &osd->rx_size_64, &nsd->rx_size_64);
1110         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1111                            I40E_GLPRT_PRC127L(hw->port),
1112                            pf->stat_offsets_loaded,
1113                            &osd->rx_size_127, &nsd->rx_size_127);
1114         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1115                            I40E_GLPRT_PRC255L(hw->port),
1116                            pf->stat_offsets_loaded,
1117                            &osd->rx_size_255, &nsd->rx_size_255);
1118         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1119                            I40E_GLPRT_PRC511L(hw->port),
1120                            pf->stat_offsets_loaded,
1121                            &osd->rx_size_511, &nsd->rx_size_511);
1122         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1123                            I40E_GLPRT_PRC1023L(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->rx_size_1023, &nsd->rx_size_1023);
1126         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1127                            I40E_GLPRT_PRC1522L(hw->port),
1128                            pf->stat_offsets_loaded,
1129                            &osd->rx_size_1522, &nsd->rx_size_1522);
1130         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1131                            I40E_GLPRT_PRC9522L(hw->port),
1132                            pf->stat_offsets_loaded,
1133                            &osd->rx_size_big, &nsd->rx_size_big);
1134
1135         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1136                            I40E_GLPRT_PTC64L(hw->port),
1137                            pf->stat_offsets_loaded,
1138                            &osd->tx_size_64, &nsd->tx_size_64);
1139         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1140                            I40E_GLPRT_PTC127L(hw->port),
1141                            pf->stat_offsets_loaded,
1142                            &osd->tx_size_127, &nsd->tx_size_127);
1143         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1144                            I40E_GLPRT_PTC255L(hw->port),
1145                            pf->stat_offsets_loaded,
1146                            &osd->tx_size_255, &nsd->tx_size_255);
1147         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1148                            I40E_GLPRT_PTC511L(hw->port),
1149                            pf->stat_offsets_loaded,
1150                            &osd->tx_size_511, &nsd->tx_size_511);
1151         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1152                            I40E_GLPRT_PTC1023L(hw->port),
1153                            pf->stat_offsets_loaded,
1154                            &osd->tx_size_1023, &nsd->tx_size_1023);
1155         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1156                            I40E_GLPRT_PTC1522L(hw->port),
1157                            pf->stat_offsets_loaded,
1158                            &osd->tx_size_1522, &nsd->tx_size_1522);
1159         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1160                            I40E_GLPRT_PTC9522L(hw->port),
1161                            pf->stat_offsets_loaded,
1162                            &osd->tx_size_big, &nsd->tx_size_big);
1163
1164         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1165                            pf->stat_offsets_loaded,
1166                            &osd->rx_undersize, &nsd->rx_undersize);
1167         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1168                            pf->stat_offsets_loaded,
1169                            &osd->rx_fragments, &nsd->rx_fragments);
1170         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1171                            pf->stat_offsets_loaded,
1172                            &osd->rx_oversize, &nsd->rx_oversize);
1173         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1174                            pf->stat_offsets_loaded,
1175                            &osd->rx_jabber, &nsd->rx_jabber);
1176
1177         /* FDIR stats */
1178         i40e_stat_update_and_clear32(hw,
1179                         I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(hw->pf_id)),
1180                         &nsd->fd_atr_match);
1181         i40e_stat_update_and_clear32(hw,
1182                         I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(hw->pf_id)),
1183                         &nsd->fd_sb_match);
1184         i40e_stat_update_and_clear32(hw,
1185                         I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(hw->pf_id)),
1186                         &nsd->fd_atr_tunnel_match);
1187
1188         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1189         nsd->tx_lpi_status =
1190                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1191                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1192         nsd->rx_lpi_status =
1193                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1194                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1195         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1196                            pf->stat_offsets_loaded,
1197                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1198         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1199                            pf->stat_offsets_loaded,
1200                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1201
1202         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1203             !test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
1204                 nsd->fd_sb_status = true;
1205         else
1206                 nsd->fd_sb_status = false;
1207
1208         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1209             !test_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
1210                 nsd->fd_atr_status = true;
1211         else
1212                 nsd->fd_atr_status = false;
1213
1214         pf->stat_offsets_loaded = true;
1215 }
1216
1217 /**
1218  * i40e_update_stats - Update the various statistics counters.
1219  * @vsi: the VSI to be updated
1220  *
1221  * Update the various stats for this VSI and its related entities.
1222  **/
1223 void i40e_update_stats(struct i40e_vsi *vsi)
1224 {
1225         struct i40e_pf *pf = vsi->back;
1226
1227         if (vsi == pf->vsi[pf->lan_vsi])
1228                 i40e_update_pf_stats(pf);
1229
1230         i40e_update_vsi_stats(vsi);
1231 }
1232
1233 /**
1234  * i40e_count_filters - counts VSI mac filters
1235  * @vsi: the VSI to be searched
1236  *
1237  * Returns count of mac filters
1238  **/
1239 int i40e_count_filters(struct i40e_vsi *vsi)
1240 {
1241         struct i40e_mac_filter *f;
1242         struct hlist_node *h;
1243         int bkt;
1244         int cnt = 0;
1245
1246         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
1247                 ++cnt;
1248
1249         return cnt;
1250 }
1251
1252 /**
1253  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1254  * @vsi: the VSI to be searched
1255  * @macaddr: the MAC address
1256  * @vlan: the vlan
1257  *
1258  * Returns ptr to the filter object or NULL
1259  **/
1260 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1261                                                 const u8 *macaddr, s16 vlan)
1262 {
1263         struct i40e_mac_filter *f;
1264         u64 key;
1265
1266         if (!vsi || !macaddr)
1267                 return NULL;
1268
1269         key = i40e_addr_to_hkey(macaddr);
1270         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1271                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1272                     (vlan == f->vlan))
1273                         return f;
1274         }
1275         return NULL;
1276 }
1277
1278 /**
1279  * i40e_find_mac - Find a mac addr in the macvlan filters list
1280  * @vsi: the VSI to be searched
1281  * @macaddr: the MAC address we are searching for
1282  *
1283  * Returns the first filter with the provided MAC address or NULL if
1284  * MAC address was not found
1285  **/
1286 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1287 {
1288         struct i40e_mac_filter *f;
1289         u64 key;
1290
1291         if (!vsi || !macaddr)
1292                 return NULL;
1293
1294         key = i40e_addr_to_hkey(macaddr);
1295         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1296                 if ((ether_addr_equal(macaddr, f->macaddr)))
1297                         return f;
1298         }
1299         return NULL;
1300 }
1301
1302 /**
1303  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1304  * @vsi: the VSI to be searched
1305  *
1306  * Returns true if VSI is in vlan mode or false otherwise
1307  **/
1308 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1309 {
1310         /* If we have a PVID, always operate in VLAN mode */
1311         if (vsi->info.pvid)
1312                 return true;
1313
1314         /* We need to operate in VLAN mode whenever we have any filters with
1315          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1316          * time, incurring search cost repeatedly. However, we can notice two
1317          * things:
1318          *
1319          * 1) the only place where we can gain a VLAN filter is in
1320          *    i40e_add_filter.
1321          *
1322          * 2) the only place where filters are actually removed is in
1323          *    i40e_sync_filters_subtask.
1324          *
1325          * Thus, we can simply use a boolean value, has_vlan_filters which we
1326          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1327          * we have to perform the full search after deleting filters in
1328          * i40e_sync_filters_subtask, but we already have to search
1329          * filters here and can perform the check at the same time. This
1330          * results in avoiding embedding a loop for VLAN mode inside another
1331          * loop over all the filters, and should maintain correctness as noted
1332          * above.
1333          */
1334         return vsi->has_vlan_filter;
1335 }
1336
1337 /**
1338  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1339  * @vsi: the VSI to configure
1340  * @tmp_add_list: list of filters ready to be added
1341  * @tmp_del_list: list of filters ready to be deleted
1342  * @vlan_filters: the number of active VLAN filters
1343  *
1344  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1345  * behave as expected. If we have any active VLAN filters remaining or about
1346  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1347  * so that they only match against untagged traffic. If we no longer have any
1348  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1349  * so that they match against both tagged and untagged traffic. In this way,
1350  * we ensure that we correctly receive the desired traffic. This ensures that
1351  * when we have an active VLAN we will receive only untagged traffic and
1352  * traffic matching active VLANs. If we have no active VLANs then we will
1353  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1354  *
1355  * Finally, in a similar fashion, this function also corrects filters when
1356  * there is an active PVID assigned to this VSI.
1357  *
1358  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1359  *
1360  * This function is only expected to be called from within
1361  * i40e_sync_vsi_filters.
1362  *
1363  * NOTE: This function expects to be called while under the
1364  * mac_filter_hash_lock
1365  */
1366 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1367                                          struct hlist_head *tmp_add_list,
1368                                          struct hlist_head *tmp_del_list,
1369                                          int vlan_filters)
1370 {
1371         s16 pvid = le16_to_cpu(vsi->info.pvid);
1372         struct i40e_mac_filter *f, *add_head;
1373         struct i40e_new_mac_filter *new;
1374         struct hlist_node *h;
1375         int bkt, new_vlan;
1376
1377         /* To determine if a particular filter needs to be replaced we
1378          * have the three following conditions:
1379          *
1380          * a) if we have a PVID assigned, then all filters which are
1381          *    not marked as VLAN=PVID must be replaced with filters that
1382          *    are.
1383          * b) otherwise, if we have any active VLANS, all filters
1384          *    which are marked as VLAN=-1 must be replaced with
1385          *    filters marked as VLAN=0
1386          * c) finally, if we do not have any active VLANS, all filters
1387          *    which are marked as VLAN=0 must be replaced with filters
1388          *    marked as VLAN=-1
1389          */
1390
1391         /* Update the filters about to be added in place */
1392         hlist_for_each_entry(new, tmp_add_list, hlist) {
1393                 if (pvid && new->f->vlan != pvid)
1394                         new->f->vlan = pvid;
1395                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1396                         new->f->vlan = 0;
1397                 else if (!vlan_filters && new->f->vlan == 0)
1398                         new->f->vlan = I40E_VLAN_ANY;
1399         }
1400
1401         /* Update the remaining active filters */
1402         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1403                 /* Combine the checks for whether a filter needs to be changed
1404                  * and then determine the new VLAN inside the if block, in
1405                  * order to avoid duplicating code for adding the new filter
1406                  * then deleting the old filter.
1407                  */
1408                 if ((pvid && f->vlan != pvid) ||
1409                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1410                     (!vlan_filters && f->vlan == 0)) {
1411                         /* Determine the new vlan we will be adding */
1412                         if (pvid)
1413                                 new_vlan = pvid;
1414                         else if (vlan_filters)
1415                                 new_vlan = 0;
1416                         else
1417                                 new_vlan = I40E_VLAN_ANY;
1418
1419                         /* Create the new filter */
1420                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1421                         if (!add_head)
1422                                 return -ENOMEM;
1423
1424                         /* Create a temporary i40e_new_mac_filter */
1425                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1426                         if (!new)
1427                                 return -ENOMEM;
1428
1429                         new->f = add_head;
1430                         new->state = add_head->state;
1431
1432                         /* Add the new filter to the tmp list */
1433                         hlist_add_head(&new->hlist, tmp_add_list);
1434
1435                         /* Put the original filter into the delete list */
1436                         f->state = I40E_FILTER_REMOVE;
1437                         hash_del(&f->hlist);
1438                         hlist_add_head(&f->hlist, tmp_del_list);
1439                 }
1440         }
1441
1442         vsi->has_vlan_filter = !!vlan_filters;
1443
1444         return 0;
1445 }
1446
1447 /**
1448  * i40e_get_vf_new_vlan - Get new vlan id on a vf
1449  * @vsi: the vsi to configure
1450  * @new_mac: new mac filter to be added
1451  * @f: existing mac filter, replaced with new_mac->f if new_mac is not NULL
1452  * @vlan_filters: the number of active VLAN filters
1453  * @trusted: flag if the VF is trusted
1454  *
1455  * Get new VLAN id based on current VLAN filters, trust, PVID
1456  * and vf-vlan-prune-disable flag.
1457  *
1458  * Returns the value of the new vlan filter or
1459  * the old value if no new filter is needed.
1460  */
1461 static s16 i40e_get_vf_new_vlan(struct i40e_vsi *vsi,
1462                                 struct i40e_new_mac_filter *new_mac,
1463                                 struct i40e_mac_filter *f,
1464                                 int vlan_filters,
1465                                 bool trusted)
1466 {
1467         s16 pvid = le16_to_cpu(vsi->info.pvid);
1468         struct i40e_pf *pf = vsi->back;
1469         bool is_any;
1470
1471         if (new_mac)
1472                 f = new_mac->f;
1473
1474         if (pvid && f->vlan != pvid)
1475                 return pvid;
1476
1477         is_any = (trusted ||
1478                   !(pf->flags & I40E_FLAG_VF_VLAN_PRUNING));
1479
1480         if ((vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1481             (!is_any && !vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1482             (is_any && !vlan_filters && f->vlan == 0)) {
1483                 if (is_any)
1484                         return I40E_VLAN_ANY;
1485                 else
1486                         return 0;
1487         }
1488
1489         return f->vlan;
1490 }
1491
1492 /**
1493  * i40e_correct_vf_mac_vlan_filters - Correct non-VLAN VF filters if necessary
1494  * @vsi: the vsi to configure
1495  * @tmp_add_list: list of filters ready to be added
1496  * @tmp_del_list: list of filters ready to be deleted
1497  * @vlan_filters: the number of active VLAN filters
1498  * @trusted: flag if the VF is trusted
1499  *
1500  * Correct VF VLAN filters based on current VLAN filters, trust, PVID
1501  * and vf-vlan-prune-disable flag.
1502  *
1503  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1504  *
1505  * This function is only expected to be called from within
1506  * i40e_sync_vsi_filters.
1507  *
1508  * NOTE: This function expects to be called while under the
1509  * mac_filter_hash_lock
1510  */
1511 static int i40e_correct_vf_mac_vlan_filters(struct i40e_vsi *vsi,
1512                                             struct hlist_head *tmp_add_list,
1513                                             struct hlist_head *tmp_del_list,
1514                                             int vlan_filters,
1515                                             bool trusted)
1516 {
1517         struct i40e_mac_filter *f, *add_head;
1518         struct i40e_new_mac_filter *new_mac;
1519         struct hlist_node *h;
1520         int bkt, new_vlan;
1521
1522         hlist_for_each_entry(new_mac, tmp_add_list, hlist) {
1523                 new_mac->f->vlan = i40e_get_vf_new_vlan(vsi, new_mac, NULL,
1524                                                         vlan_filters, trusted);
1525         }
1526
1527         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1528                 new_vlan = i40e_get_vf_new_vlan(vsi, NULL, f, vlan_filters,
1529                                                 trusted);
1530                 if (new_vlan != f->vlan) {
1531                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1532                         if (!add_head)
1533                                 return -ENOMEM;
1534                         /* Create a temporary i40e_new_mac_filter */
1535                         new_mac = kzalloc(sizeof(*new_mac), GFP_ATOMIC);
1536                         if (!new_mac)
1537                                 return -ENOMEM;
1538                         new_mac->f = add_head;
1539                         new_mac->state = add_head->state;
1540
1541                         /* Add the new filter to the tmp list */
1542                         hlist_add_head(&new_mac->hlist, tmp_add_list);
1543
1544                         /* Put the original filter into the delete list */
1545                         f->state = I40E_FILTER_REMOVE;
1546                         hash_del(&f->hlist);
1547                         hlist_add_head(&f->hlist, tmp_del_list);
1548                 }
1549         }
1550
1551         vsi->has_vlan_filter = !!vlan_filters;
1552         return 0;
1553 }
1554
1555 /**
1556  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1557  * @vsi: the PF Main VSI - inappropriate for any other VSI
1558  * @macaddr: the MAC address
1559  *
1560  * Remove whatever filter the firmware set up so the driver can manage
1561  * its own filtering intelligently.
1562  **/
1563 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1564 {
1565         struct i40e_aqc_remove_macvlan_element_data element;
1566         struct i40e_pf *pf = vsi->back;
1567
1568         /* Only appropriate for the PF main VSI */
1569         if (vsi->type != I40E_VSI_MAIN)
1570                 return;
1571
1572         memset(&element, 0, sizeof(element));
1573         ether_addr_copy(element.mac_addr, macaddr);
1574         element.vlan_tag = 0;
1575         /* Ignore error returns, some firmware does it this way... */
1576         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1577         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1578
1579         memset(&element, 0, sizeof(element));
1580         ether_addr_copy(element.mac_addr, macaddr);
1581         element.vlan_tag = 0;
1582         /* ...and some firmware does it this way. */
1583         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1584                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1585         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1586 }
1587
1588 /**
1589  * i40e_add_filter - Add a mac/vlan filter to the VSI
1590  * @vsi: the VSI to be searched
1591  * @macaddr: the MAC address
1592  * @vlan: the vlan
1593  *
1594  * Returns ptr to the filter object or NULL when no memory available.
1595  *
1596  * NOTE: This function is expected to be called with mac_filter_hash_lock
1597  * being held.
1598  **/
1599 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1600                                         const u8 *macaddr, s16 vlan)
1601 {
1602         struct i40e_mac_filter *f;
1603         u64 key;
1604
1605         if (!vsi || !macaddr)
1606                 return NULL;
1607
1608         f = i40e_find_filter(vsi, macaddr, vlan);
1609         if (!f) {
1610                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1611                 if (!f)
1612                         return NULL;
1613
1614                 /* Update the boolean indicating if we need to function in
1615                  * VLAN mode.
1616                  */
1617                 if (vlan >= 0)
1618                         vsi->has_vlan_filter = true;
1619
1620                 ether_addr_copy(f->macaddr, macaddr);
1621                 f->vlan = vlan;
1622                 f->state = I40E_FILTER_NEW;
1623                 INIT_HLIST_NODE(&f->hlist);
1624
1625                 key = i40e_addr_to_hkey(macaddr);
1626                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1627
1628                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1629                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1630         }
1631
1632         /* If we're asked to add a filter that has been marked for removal, it
1633          * is safe to simply restore it to active state. __i40e_del_filter
1634          * will have simply deleted any filters which were previously marked
1635          * NEW or FAILED, so if it is currently marked REMOVE it must have
1636          * previously been ACTIVE. Since we haven't yet run the sync filters
1637          * task, just restore this filter to the ACTIVE state so that the
1638          * sync task leaves it in place
1639          */
1640         if (f->state == I40E_FILTER_REMOVE)
1641                 f->state = I40E_FILTER_ACTIVE;
1642
1643         return f;
1644 }
1645
1646 /**
1647  * __i40e_del_filter - Remove a specific filter from the VSI
1648  * @vsi: VSI to remove from
1649  * @f: the filter to remove from the list
1650  *
1651  * This function should be called instead of i40e_del_filter only if you know
1652  * the exact filter you will remove already, such as via i40e_find_filter or
1653  * i40e_find_mac.
1654  *
1655  * NOTE: This function is expected to be called with mac_filter_hash_lock
1656  * being held.
1657  * ANOTHER NOTE: This function MUST be called from within the context of
1658  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1659  * instead of list_for_each_entry().
1660  **/
1661 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1662 {
1663         if (!f)
1664                 return;
1665
1666         /* If the filter was never added to firmware then we can just delete it
1667          * directly and we don't want to set the status to remove or else an
1668          * admin queue command will unnecessarily fire.
1669          */
1670         if ((f->state == I40E_FILTER_FAILED) ||
1671             (f->state == I40E_FILTER_NEW)) {
1672                 hash_del(&f->hlist);
1673                 kfree(f);
1674         } else {
1675                 f->state = I40E_FILTER_REMOVE;
1676         }
1677
1678         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1679         set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1680 }
1681
1682 /**
1683  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1684  * @vsi: the VSI to be searched
1685  * @macaddr: the MAC address
1686  * @vlan: the VLAN
1687  *
1688  * NOTE: This function is expected to be called with mac_filter_hash_lock
1689  * being held.
1690  * ANOTHER NOTE: This function MUST be called from within the context of
1691  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1692  * instead of list_for_each_entry().
1693  **/
1694 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1695 {
1696         struct i40e_mac_filter *f;
1697
1698         if (!vsi || !macaddr)
1699                 return;
1700
1701         f = i40e_find_filter(vsi, macaddr, vlan);
1702         __i40e_del_filter(vsi, f);
1703 }
1704
1705 /**
1706  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1707  * @vsi: the VSI to be searched
1708  * @macaddr: the mac address to be filtered
1709  *
1710  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1711  * go through all the macvlan filters and add a macvlan filter for each
1712  * unique vlan that already exists. If a PVID has been assigned, instead only
1713  * add the macaddr to that VLAN.
1714  *
1715  * Returns last filter added on success, else NULL
1716  **/
1717 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1718                                             const u8 *macaddr)
1719 {
1720         struct i40e_mac_filter *f, *add = NULL;
1721         struct hlist_node *h;
1722         int bkt;
1723
1724         if (vsi->info.pvid)
1725                 return i40e_add_filter(vsi, macaddr,
1726                                        le16_to_cpu(vsi->info.pvid));
1727
1728         if (!i40e_is_vsi_in_vlan(vsi))
1729                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1730
1731         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1732                 if (f->state == I40E_FILTER_REMOVE)
1733                         continue;
1734                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1735                 if (!add)
1736                         return NULL;
1737         }
1738
1739         return add;
1740 }
1741
1742 /**
1743  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1744  * @vsi: the VSI to be searched
1745  * @macaddr: the mac address to be removed
1746  *
1747  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1748  * associated with.
1749  *
1750  * Returns 0 for success, or error
1751  **/
1752 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1753 {
1754         struct i40e_mac_filter *f;
1755         struct hlist_node *h;
1756         bool found = false;
1757         int bkt;
1758
1759         lockdep_assert_held(&vsi->mac_filter_hash_lock);
1760         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1761                 if (ether_addr_equal(macaddr, f->macaddr)) {
1762                         __i40e_del_filter(vsi, f);
1763                         found = true;
1764                 }
1765         }
1766
1767         if (found)
1768                 return 0;
1769         else
1770                 return -ENOENT;
1771 }
1772
1773 /**
1774  * i40e_set_mac - NDO callback to set mac address
1775  * @netdev: network interface device structure
1776  * @p: pointer to an address structure
1777  *
1778  * Returns 0 on success, negative on failure
1779  **/
1780 static int i40e_set_mac(struct net_device *netdev, void *p)
1781 {
1782         struct i40e_netdev_priv *np = netdev_priv(netdev);
1783         struct i40e_vsi *vsi = np->vsi;
1784         struct i40e_pf *pf = vsi->back;
1785         struct i40e_hw *hw = &pf->hw;
1786         struct sockaddr *addr = p;
1787
1788         if (!is_valid_ether_addr(addr->sa_data))
1789                 return -EADDRNOTAVAIL;
1790
1791         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1792                 netdev_info(netdev, "already using mac address %pM\n",
1793                             addr->sa_data);
1794                 return 0;
1795         }
1796
1797         if (test_bit(__I40E_DOWN, pf->state) ||
1798             test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
1799                 return -EADDRNOTAVAIL;
1800
1801         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1802                 netdev_info(netdev, "returning to hw mac address %pM\n",
1803                             hw->mac.addr);
1804         else
1805                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1806
1807         /* Copy the address first, so that we avoid a possible race with
1808          * .set_rx_mode().
1809          * - Remove old address from MAC filter
1810          * - Copy new address
1811          * - Add new address to MAC filter
1812          */
1813         spin_lock_bh(&vsi->mac_filter_hash_lock);
1814         i40e_del_mac_filter(vsi, netdev->dev_addr);
1815         eth_hw_addr_set(netdev, addr->sa_data);
1816         i40e_add_mac_filter(vsi, netdev->dev_addr);
1817         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1818
1819         if (vsi->type == I40E_VSI_MAIN) {
1820                 i40e_status ret;
1821
1822                 ret = i40e_aq_mac_address_write(hw, I40E_AQC_WRITE_TYPE_LAA_WOL,
1823                                                 addr->sa_data, NULL);
1824                 if (ret)
1825                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1826                                     i40e_stat_str(hw, ret),
1827                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1828         }
1829
1830         /* schedule our worker thread which will take care of
1831          * applying the new filter changes
1832          */
1833         i40e_service_event_schedule(pf);
1834         return 0;
1835 }
1836
1837 /**
1838  * i40e_config_rss_aq - Prepare for RSS using AQ commands
1839  * @vsi: vsi structure
1840  * @seed: RSS hash seed
1841  * @lut: pointer to lookup table of lut_size
1842  * @lut_size: size of the lookup table
1843  **/
1844 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1845                               u8 *lut, u16 lut_size)
1846 {
1847         struct i40e_pf *pf = vsi->back;
1848         struct i40e_hw *hw = &pf->hw;
1849         int ret = 0;
1850
1851         if (seed) {
1852                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
1853                         (struct i40e_aqc_get_set_rss_key_data *)seed;
1854                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
1855                 if (ret) {
1856                         dev_info(&pf->pdev->dev,
1857                                  "Cannot set RSS key, err %s aq_err %s\n",
1858                                  i40e_stat_str(hw, ret),
1859                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1860                         return ret;
1861                 }
1862         }
1863         if (lut) {
1864                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
1865
1866                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
1867                 if (ret) {
1868                         dev_info(&pf->pdev->dev,
1869                                  "Cannot set RSS lut, err %s aq_err %s\n",
1870                                  i40e_stat_str(hw, ret),
1871                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1872                         return ret;
1873                 }
1874         }
1875         return ret;
1876 }
1877
1878 /**
1879  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
1880  * @vsi: VSI structure
1881  **/
1882 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
1883 {
1884         struct i40e_pf *pf = vsi->back;
1885         u8 seed[I40E_HKEY_ARRAY_SIZE];
1886         u8 *lut;
1887         int ret;
1888
1889         if (!(pf->hw_features & I40E_HW_RSS_AQ_CAPABLE))
1890                 return 0;
1891         if (!vsi->rss_size)
1892                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
1893                                       vsi->num_queue_pairs);
1894         if (!vsi->rss_size)
1895                 return -EINVAL;
1896         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1897         if (!lut)
1898                 return -ENOMEM;
1899
1900         /* Use the user configured hash keys and lookup table if there is one,
1901          * otherwise use default
1902          */
1903         if (vsi->rss_lut_user)
1904                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1905         else
1906                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
1907         if (vsi->rss_hkey_user)
1908                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
1909         else
1910                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
1911         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
1912         kfree(lut);
1913         return ret;
1914 }
1915
1916 /**
1917  * i40e_vsi_setup_queue_map_mqprio - Prepares mqprio based tc_config
1918  * @vsi: the VSI being configured,
1919  * @ctxt: VSI context structure
1920  * @enabled_tc: number of traffic classes to enable
1921  *
1922  * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
1923  **/
1924 static int i40e_vsi_setup_queue_map_mqprio(struct i40e_vsi *vsi,
1925                                            struct i40e_vsi_context *ctxt,
1926                                            u8 enabled_tc)
1927 {
1928         u16 qcount = 0, max_qcount, qmap, sections = 0;
1929         int i, override_q, pow, num_qps, ret;
1930         u8 netdev_tc = 0, offset = 0;
1931
1932         if (vsi->type != I40E_VSI_MAIN)
1933                 return -EINVAL;
1934         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1935         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1936         vsi->tc_config.numtc = vsi->mqprio_qopt.qopt.num_tc;
1937         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1938         num_qps = vsi->mqprio_qopt.qopt.count[0];
1939
1940         /* find the next higher power-of-2 of num queue pairs */
1941         pow = ilog2(num_qps);
1942         if (!is_power_of_2(num_qps))
1943                 pow++;
1944         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1945                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1946
1947         /* Setup queue offset/count for all TCs for given VSI */
1948         max_qcount = vsi->mqprio_qopt.qopt.count[0];
1949         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1950                 /* See if the given TC is enabled for the given VSI */
1951                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1952                         offset = vsi->mqprio_qopt.qopt.offset[i];
1953                         qcount = vsi->mqprio_qopt.qopt.count[i];
1954                         if (qcount > max_qcount)
1955                                 max_qcount = qcount;
1956                         vsi->tc_config.tc_info[i].qoffset = offset;
1957                         vsi->tc_config.tc_info[i].qcount = qcount;
1958                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1959                 } else {
1960                         /* TC is not enabled so set the offset to
1961                          * default queue and allocate one queue
1962                          * for the given TC.
1963                          */
1964                         vsi->tc_config.tc_info[i].qoffset = 0;
1965                         vsi->tc_config.tc_info[i].qcount = 1;
1966                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1967                 }
1968         }
1969
1970         /* Set actual Tx/Rx queue pairs */
1971         vsi->num_queue_pairs = offset + qcount;
1972
1973         /* Setup queue TC[0].qmap for given VSI context */
1974         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
1975         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1976         ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1977         ctxt->info.valid_sections |= cpu_to_le16(sections);
1978
1979         /* Reconfigure RSS for main VSI with max queue count */
1980         vsi->rss_size = max_qcount;
1981         ret = i40e_vsi_config_rss(vsi);
1982         if (ret) {
1983                 dev_info(&vsi->back->pdev->dev,
1984                          "Failed to reconfig rss for num_queues (%u)\n",
1985                          max_qcount);
1986                 return ret;
1987         }
1988         vsi->reconfig_rss = true;
1989         dev_dbg(&vsi->back->pdev->dev,
1990                 "Reconfigured rss with num_queues (%u)\n", max_qcount);
1991
1992         /* Find queue count available for channel VSIs and starting offset
1993          * for channel VSIs
1994          */
1995         override_q = vsi->mqprio_qopt.qopt.count[0];
1996         if (override_q && override_q < vsi->num_queue_pairs) {
1997                 vsi->cnt_q_avail = vsi->num_queue_pairs - override_q;
1998                 vsi->next_base_queue = override_q;
1999         }
2000         return 0;
2001 }
2002
2003 /**
2004  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
2005  * @vsi: the VSI being setup
2006  * @ctxt: VSI context structure
2007  * @enabled_tc: Enabled TCs bitmap
2008  * @is_add: True if called before Add VSI
2009  *
2010  * Setup VSI queue mapping for enabled traffic classes.
2011  **/
2012 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
2013                                      struct i40e_vsi_context *ctxt,
2014                                      u8 enabled_tc,
2015                                      bool is_add)
2016 {
2017         struct i40e_pf *pf = vsi->back;
2018         u16 num_tc_qps = 0;
2019         u16 sections = 0;
2020         u8 netdev_tc = 0;
2021         u16 numtc = 1;
2022         u16 qcount;
2023         u8 offset;
2024         u16 qmap;
2025         int i;
2026
2027         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
2028         offset = 0;
2029         /* zero out queue mapping, it will get updated on the end of the function */
2030         memset(ctxt->info.queue_mapping, 0, sizeof(ctxt->info.queue_mapping));
2031
2032         if (vsi->type == I40E_VSI_MAIN) {
2033                 /* This code helps add more queue to the VSI if we have
2034                  * more cores than RSS can support, the higher cores will
2035                  * be served by ATR or other filters. Furthermore, the
2036                  * non-zero req_queue_pairs says that user requested a new
2037                  * queue count via ethtool's set_channels, so use this
2038                  * value for queues distribution across traffic classes
2039                  * We need at least one queue pair for the interface
2040                  * to be usable as we see in else statement.
2041                  */
2042                 if (vsi->req_queue_pairs > 0)
2043                         vsi->num_queue_pairs = vsi->req_queue_pairs;
2044                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
2045                         vsi->num_queue_pairs = pf->num_lan_msix;
2046                 else
2047                         vsi->num_queue_pairs = 1;
2048         }
2049
2050         /* Number of queues per enabled TC */
2051         if (vsi->type == I40E_VSI_MAIN ||
2052             (vsi->type == I40E_VSI_SRIOV && vsi->num_queue_pairs != 0))
2053                 num_tc_qps = vsi->num_queue_pairs;
2054         else
2055                 num_tc_qps = vsi->alloc_queue_pairs;
2056
2057         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2058                 /* Find numtc from enabled TC bitmap */
2059                 for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
2060                         if (enabled_tc & BIT(i)) /* TC is enabled */
2061                                 numtc++;
2062                 }
2063                 if (!numtc) {
2064                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
2065                         numtc = 1;
2066                 }
2067                 num_tc_qps = num_tc_qps / numtc;
2068                 num_tc_qps = min_t(int, num_tc_qps,
2069                                    i40e_pf_get_max_q_per_tc(pf));
2070         }
2071
2072         vsi->tc_config.numtc = numtc;
2073         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
2074
2075         /* Do not allow use more TC queue pairs than MSI-X vectors exist */
2076         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
2077                 num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);
2078
2079         /* Setup queue offset/count for all TCs for given VSI */
2080         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
2081                 /* See if the given TC is enabled for the given VSI */
2082                 if (vsi->tc_config.enabled_tc & BIT(i)) {
2083                         /* TC is enabled */
2084                         int pow, num_qps;
2085
2086                         switch (vsi->type) {
2087                         case I40E_VSI_MAIN:
2088                                 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
2089                                     I40E_FLAG_FD_ATR_ENABLED)) ||
2090                                     vsi->tc_config.enabled_tc != 1) {
2091                                         qcount = min_t(int, pf->alloc_rss_size,
2092                                                        num_tc_qps);
2093                                         break;
2094                                 }
2095                                 fallthrough;
2096                         case I40E_VSI_FDIR:
2097                         case I40E_VSI_SRIOV:
2098                         case I40E_VSI_VMDQ2:
2099                         default:
2100                                 qcount = num_tc_qps;
2101                                 WARN_ON(i != 0);
2102                                 break;
2103                         }
2104                         vsi->tc_config.tc_info[i].qoffset = offset;
2105                         vsi->tc_config.tc_info[i].qcount = qcount;
2106
2107                         /* find the next higher power-of-2 of num queue pairs */
2108                         num_qps = qcount;
2109                         pow = 0;
2110                         while (num_qps && (BIT_ULL(pow) < qcount)) {
2111                                 pow++;
2112                                 num_qps >>= 1;
2113                         }
2114
2115                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
2116                         qmap =
2117                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
2118                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
2119
2120                         offset += qcount;
2121                 } else {
2122                         /* TC is not enabled so set the offset to
2123                          * default queue and allocate one queue
2124                          * for the given TC.
2125                          */
2126                         vsi->tc_config.tc_info[i].qoffset = 0;
2127                         vsi->tc_config.tc_info[i].qcount = 1;
2128                         vsi->tc_config.tc_info[i].netdev_tc = 0;
2129
2130                         qmap = 0;
2131                 }
2132                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
2133         }
2134         /* Do not change previously set num_queue_pairs for PFs and VFs*/
2135         if ((vsi->type == I40E_VSI_MAIN && numtc != 1) ||
2136             (vsi->type == I40E_VSI_SRIOV && vsi->num_queue_pairs == 0) ||
2137             (vsi->type != I40E_VSI_MAIN && vsi->type != I40E_VSI_SRIOV))
2138                 vsi->num_queue_pairs = offset;
2139
2140         /* Scheduler section valid can only be set for ADD VSI */
2141         if (is_add) {
2142                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
2143
2144                 ctxt->info.up_enable_bits = enabled_tc;
2145         }
2146         if (vsi->type == I40E_VSI_SRIOV) {
2147                 ctxt->info.mapping_flags |=
2148                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
2149                 for (i = 0; i < vsi->num_queue_pairs; i++)
2150                         ctxt->info.queue_mapping[i] =
2151                                                cpu_to_le16(vsi->base_queue + i);
2152         } else {
2153                 ctxt->info.mapping_flags |=
2154                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
2155                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
2156         }
2157         ctxt->info.valid_sections |= cpu_to_le16(sections);
2158 }
2159
2160 /**
2161  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
2162  * @netdev: the netdevice
2163  * @addr: address to add
2164  *
2165  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
2166  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
2167  */
2168 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
2169 {
2170         struct i40e_netdev_priv *np = netdev_priv(netdev);
2171         struct i40e_vsi *vsi = np->vsi;
2172
2173         if (i40e_add_mac_filter(vsi, addr))
2174                 return 0;
2175         else
2176                 return -ENOMEM;
2177 }
2178
2179 /**
2180  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
2181  * @netdev: the netdevice
2182  * @addr: address to add
2183  *
2184  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
2185  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
2186  */
2187 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
2188 {
2189         struct i40e_netdev_priv *np = netdev_priv(netdev);
2190         struct i40e_vsi *vsi = np->vsi;
2191
2192         /* Under some circumstances, we might receive a request to delete
2193          * our own device address from our uc list. Because we store the
2194          * device address in the VSI's MAC/VLAN filter list, we need to ignore
2195          * such requests and not delete our device address from this list.
2196          */
2197         if (ether_addr_equal(addr, netdev->dev_addr))
2198                 return 0;
2199
2200         i40e_del_mac_filter(vsi, addr);
2201
2202         return 0;
2203 }
2204
2205 /**
2206  * i40e_set_rx_mode - NDO callback to set the netdev filters
2207  * @netdev: network interface device structure
2208  **/
2209 static void i40e_set_rx_mode(struct net_device *netdev)
2210 {
2211         struct i40e_netdev_priv *np = netdev_priv(netdev);
2212         struct i40e_vsi *vsi = np->vsi;
2213
2214         spin_lock_bh(&vsi->mac_filter_hash_lock);
2215
2216         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
2217         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
2218
2219         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2220
2221         /* check for other flag changes */
2222         if (vsi->current_netdev_flags != vsi->netdev->flags) {
2223                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2224                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
2225         }
2226 }
2227
2228 /**
2229  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
2230  * @vsi: Pointer to VSI struct
2231  * @from: Pointer to list which contains MAC filter entries - changes to
2232  *        those entries needs to be undone.
2233  *
2234  * MAC filter entries from this list were slated for deletion.
2235  **/
2236 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
2237                                          struct hlist_head *from)
2238 {
2239         struct i40e_mac_filter *f;
2240         struct hlist_node *h;
2241
2242         hlist_for_each_entry_safe(f, h, from, hlist) {
2243                 u64 key = i40e_addr_to_hkey(f->macaddr);
2244
2245                 /* Move the element back into MAC filter list*/
2246                 hlist_del(&f->hlist);
2247                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
2248         }
2249 }
2250
2251 /**
2252  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
2253  * @vsi: Pointer to vsi struct
2254  * @from: Pointer to list which contains MAC filter entries - changes to
2255  *        those entries needs to be undone.
2256  *
2257  * MAC filter entries from this list were slated for addition.
2258  **/
2259 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
2260                                          struct hlist_head *from)
2261 {
2262         struct i40e_new_mac_filter *new;
2263         struct hlist_node *h;
2264
2265         hlist_for_each_entry_safe(new, h, from, hlist) {
2266                 /* We can simply free the wrapper structure */
2267                 hlist_del(&new->hlist);
2268                 netdev_hw_addr_refcnt(new->f, vsi->netdev, -1);
2269                 kfree(new);
2270         }
2271 }
2272
2273 /**
2274  * i40e_next_filter - Get the next non-broadcast filter from a list
2275  * @next: pointer to filter in list
2276  *
2277  * Returns the next non-broadcast filter in the list. Required so that we
2278  * ignore broadcast filters within the list, since these are not handled via
2279  * the normal firmware update path.
2280  */
2281 static
2282 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
2283 {
2284         hlist_for_each_entry_continue(next, hlist) {
2285                 if (!is_broadcast_ether_addr(next->f->macaddr))
2286                         return next;
2287         }
2288
2289         return NULL;
2290 }
2291
2292 /**
2293  * i40e_update_filter_state - Update filter state based on return data
2294  * from firmware
2295  * @count: Number of filters added
2296  * @add_list: return data from fw
2297  * @add_head: pointer to first filter in current batch
2298  *
2299  * MAC filter entries from list were slated to be added to device. Returns
2300  * number of successful filters. Note that 0 does NOT mean success!
2301  **/
2302 static int
2303 i40e_update_filter_state(int count,
2304                          struct i40e_aqc_add_macvlan_element_data *add_list,
2305                          struct i40e_new_mac_filter *add_head)
2306 {
2307         int retval = 0;
2308         int i;
2309
2310         for (i = 0; i < count; i++) {
2311                 /* Always check status of each filter. We don't need to check
2312                  * the firmware return status because we pre-set the filter
2313                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
2314                  * request to the adminq. Thus, if it no longer matches then
2315                  * we know the filter is active.
2316                  */
2317                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
2318                         add_head->state = I40E_FILTER_FAILED;
2319                 } else {
2320                         add_head->state = I40E_FILTER_ACTIVE;
2321                         retval++;
2322                 }
2323
2324                 add_head = i40e_next_filter(add_head);
2325                 if (!add_head)
2326                         break;
2327         }
2328
2329         return retval;
2330 }
2331
2332 /**
2333  * i40e_aqc_del_filters - Request firmware to delete a set of filters
2334  * @vsi: ptr to the VSI
2335  * @vsi_name: name to display in messages
2336  * @list: the list of filters to send to firmware
2337  * @num_del: the number of filters to delete
2338  * @retval: Set to -EIO on failure to delete
2339  *
2340  * Send a request to firmware via AdminQ to delete a set of filters. Uses
2341  * *retval instead of a return value so that success does not force ret_val to
2342  * be set to 0. This ensures that a sequence of calls to this function
2343  * preserve the previous value of *retval on successful delete.
2344  */
2345 static
2346 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
2347                           struct i40e_aqc_remove_macvlan_element_data *list,
2348                           int num_del, int *retval)
2349 {
2350         struct i40e_hw *hw = &vsi->back->hw;
2351         enum i40e_admin_queue_err aq_status;
2352         i40e_status aq_ret;
2353
2354         aq_ret = i40e_aq_remove_macvlan_v2(hw, vsi->seid, list, num_del, NULL,
2355                                            &aq_status);
2356
2357         /* Explicitly ignore and do not report when firmware returns ENOENT */
2358         if (aq_ret && !(aq_status == I40E_AQ_RC_ENOENT)) {
2359                 *retval = -EIO;
2360                 dev_info(&vsi->back->pdev->dev,
2361                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
2362                          vsi_name, i40e_stat_str(hw, aq_ret),
2363                          i40e_aq_str(hw, aq_status));
2364         }
2365 }
2366
2367 /**
2368  * i40e_aqc_add_filters - Request firmware to add a set of filters
2369  * @vsi: ptr to the VSI
2370  * @vsi_name: name to display in messages
2371  * @list: the list of filters to send to firmware
2372  * @add_head: Position in the add hlist
2373  * @num_add: the number of filters to add
2374  *
2375  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
2376  * __I40E_VSI_OVERFLOW_PROMISC bit in vsi->state if the firmware has run out of
2377  * space for more filters.
2378  */
2379 static
2380 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
2381                           struct i40e_aqc_add_macvlan_element_data *list,
2382                           struct i40e_new_mac_filter *add_head,
2383                           int num_add)
2384 {
2385         struct i40e_hw *hw = &vsi->back->hw;
2386         enum i40e_admin_queue_err aq_status;
2387         int fcnt;
2388
2389         i40e_aq_add_macvlan_v2(hw, vsi->seid, list, num_add, NULL, &aq_status);
2390         fcnt = i40e_update_filter_state(num_add, list, add_head);
2391
2392         if (fcnt != num_add) {
2393                 if (vsi->type == I40E_VSI_MAIN) {
2394                         set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2395                         dev_warn(&vsi->back->pdev->dev,
2396                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2397                                  i40e_aq_str(hw, aq_status), vsi_name);
2398                 } else if (vsi->type == I40E_VSI_SRIOV ||
2399                            vsi->type == I40E_VSI_VMDQ1 ||
2400                            vsi->type == I40E_VSI_VMDQ2) {
2401                         dev_warn(&vsi->back->pdev->dev,
2402                                  "Error %s adding RX filters on %s, please set promiscuous on manually for %s\n",
2403                                  i40e_aq_str(hw, aq_status), vsi_name,
2404                                              vsi_name);
2405                 } else {
2406                         dev_warn(&vsi->back->pdev->dev,
2407                                  "Error %s adding RX filters on %s, incorrect VSI type: %i.\n",
2408                                  i40e_aq_str(hw, aq_status), vsi_name,
2409                                              vsi->type);
2410                 }
2411         }
2412 }
2413
2414 /**
2415  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2416  * @vsi: pointer to the VSI
2417  * @vsi_name: the VSI name
2418  * @f: filter data
2419  *
2420  * This function sets or clears the promiscuous broadcast flags for VLAN
2421  * filters in order to properly receive broadcast frames. Assumes that only
2422  * broadcast filters are passed.
2423  *
2424  * Returns status indicating success or failure;
2425  **/
2426 static i40e_status
2427 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2428                           struct i40e_mac_filter *f)
2429 {
2430         bool enable = f->state == I40E_FILTER_NEW;
2431         struct i40e_hw *hw = &vsi->back->hw;
2432         i40e_status aq_ret;
2433
2434         if (f->vlan == I40E_VLAN_ANY) {
2435                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2436                                                    vsi->seid,
2437                                                    enable,
2438                                                    NULL);
2439         } else {
2440                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2441                                                             vsi->seid,
2442                                                             enable,
2443                                                             f->vlan,
2444                                                             NULL);
2445         }
2446
2447         if (aq_ret) {
2448                 set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2449                 dev_warn(&vsi->back->pdev->dev,
2450                          "Error %s, forcing overflow promiscuous on %s\n",
2451                          i40e_aq_str(hw, hw->aq.asq_last_status),
2452                          vsi_name);
2453         }
2454
2455         return aq_ret;
2456 }
2457
2458 /**
2459  * i40e_set_promiscuous - set promiscuous mode
2460  * @pf: board private structure
2461  * @promisc: promisc on or off
2462  *
2463  * There are different ways of setting promiscuous mode on a PF depending on
2464  * what state/environment we're in.  This identifies and sets it appropriately.
2465  * Returns 0 on success.
2466  **/
2467 static int i40e_set_promiscuous(struct i40e_pf *pf, bool promisc)
2468 {
2469         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
2470         struct i40e_hw *hw = &pf->hw;
2471         i40e_status aq_ret;
2472
2473         if (vsi->type == I40E_VSI_MAIN &&
2474             pf->lan_veb != I40E_NO_VEB &&
2475             !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2476                 /* set defport ON for Main VSI instead of true promisc
2477                  * this way we will get all unicast/multicast and VLAN
2478                  * promisc behavior but will not get VF or VMDq traffic
2479                  * replicated on the Main VSI.
2480                  */
2481                 if (promisc)
2482                         aq_ret = i40e_aq_set_default_vsi(hw,
2483                                                          vsi->seid,
2484                                                          NULL);
2485                 else
2486                         aq_ret = i40e_aq_clear_default_vsi(hw,
2487                                                            vsi->seid,
2488                                                            NULL);
2489                 if (aq_ret) {
2490                         dev_info(&pf->pdev->dev,
2491                                  "Set default VSI failed, err %s, aq_err %s\n",
2492                                  i40e_stat_str(hw, aq_ret),
2493                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2494                 }
2495         } else {
2496                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2497                                                   hw,
2498                                                   vsi->seid,
2499                                                   promisc, NULL,
2500                                                   true);
2501                 if (aq_ret) {
2502                         dev_info(&pf->pdev->dev,
2503                                  "set unicast promisc failed, err %s, aq_err %s\n",
2504                                  i40e_stat_str(hw, aq_ret),
2505                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2506                 }
2507                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2508                                                   hw,
2509                                                   vsi->seid,
2510                                                   promisc, NULL);
2511                 if (aq_ret) {
2512                         dev_info(&pf->pdev->dev,
2513                                  "set multicast promisc failed, err %s, aq_err %s\n",
2514                                  i40e_stat_str(hw, aq_ret),
2515                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2516                 }
2517         }
2518
2519         if (!aq_ret)
2520                 pf->cur_promisc = promisc;
2521
2522         return aq_ret;
2523 }
2524
2525 /**
2526  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2527  * @vsi: ptr to the VSI
2528  *
2529  * Push any outstanding VSI filter changes through the AdminQ.
2530  *
2531  * Returns 0 or error value
2532  **/
2533 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2534 {
2535         struct hlist_head tmp_add_list, tmp_del_list;
2536         struct i40e_mac_filter *f;
2537         struct i40e_new_mac_filter *new, *add_head = NULL;
2538         struct i40e_hw *hw = &vsi->back->hw;
2539         bool old_overflow, new_overflow;
2540         unsigned int failed_filters = 0;
2541         unsigned int vlan_filters = 0;
2542         char vsi_name[16] = "PF";
2543         int filter_list_len = 0;
2544         i40e_status aq_ret = 0;
2545         u32 changed_flags = 0;
2546         struct hlist_node *h;
2547         struct i40e_pf *pf;
2548         int num_add = 0;
2549         int num_del = 0;
2550         int retval = 0;
2551         u16 cmd_flags;
2552         int list_size;
2553         int bkt;
2554
2555         /* empty array typed pointers, kcalloc later */
2556         struct i40e_aqc_add_macvlan_element_data *add_list;
2557         struct i40e_aqc_remove_macvlan_element_data *del_list;
2558
2559         while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
2560                 usleep_range(1000, 2000);
2561         pf = vsi->back;
2562
2563         old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2564
2565         if (vsi->netdev) {
2566                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2567                 vsi->current_netdev_flags = vsi->netdev->flags;
2568         }
2569
2570         INIT_HLIST_HEAD(&tmp_add_list);
2571         INIT_HLIST_HEAD(&tmp_del_list);
2572
2573         if (vsi->type == I40E_VSI_SRIOV)
2574                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2575         else if (vsi->type != I40E_VSI_MAIN)
2576                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2577
2578         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2579                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2580
2581                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2582                 /* Create a list of filters to delete. */
2583                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2584                         if (f->state == I40E_FILTER_REMOVE) {
2585                                 /* Move the element into temporary del_list */
2586                                 hash_del(&f->hlist);
2587                                 hlist_add_head(&f->hlist, &tmp_del_list);
2588
2589                                 /* Avoid counting removed filters */
2590                                 continue;
2591                         }
2592                         if (f->state == I40E_FILTER_NEW) {
2593                                 /* Create a temporary i40e_new_mac_filter */
2594                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2595                                 if (!new)
2596                                         goto err_no_memory_locked;
2597
2598                                 /* Store pointer to the real filter */
2599                                 new->f = f;
2600                                 new->state = f->state;
2601
2602                                 /* Add it to the hash list */
2603                                 hlist_add_head(&new->hlist, &tmp_add_list);
2604                         }
2605
2606                         /* Count the number of active (current and new) VLAN
2607                          * filters we have now. Does not count filters which
2608                          * are marked for deletion.
2609                          */
2610                         if (f->vlan > 0)
2611                                 vlan_filters++;
2612                 }
2613
2614                 if (vsi->type != I40E_VSI_SRIOV)
2615                         retval = i40e_correct_mac_vlan_filters
2616                                 (vsi, &tmp_add_list, &tmp_del_list,
2617                                  vlan_filters);
2618                 else
2619                         retval = i40e_correct_vf_mac_vlan_filters
2620                                 (vsi, &tmp_add_list, &tmp_del_list,
2621                                  vlan_filters, pf->vf[vsi->vf_id].trusted);
2622
2623                 hlist_for_each_entry(new, &tmp_add_list, hlist)
2624                         netdev_hw_addr_refcnt(new->f, vsi->netdev, 1);
2625
2626                 if (retval)
2627                         goto err_no_memory_locked;
2628
2629                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2630         }
2631
2632         /* Now process 'del_list' outside the lock */
2633         if (!hlist_empty(&tmp_del_list)) {
2634                 filter_list_len = hw->aq.asq_buf_size /
2635                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2636                 list_size = filter_list_len *
2637                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2638                 del_list = kzalloc(list_size, GFP_ATOMIC);
2639                 if (!del_list)
2640                         goto err_no_memory;
2641
2642                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2643                         cmd_flags = 0;
2644
2645                         /* handle broadcast filters by updating the broadcast
2646                          * promiscuous flag and release filter list.
2647                          */
2648                         if (is_broadcast_ether_addr(f->macaddr)) {
2649                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2650
2651                                 hlist_del(&f->hlist);
2652                                 kfree(f);
2653                                 continue;
2654                         }
2655
2656                         /* add to delete list */
2657                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2658                         if (f->vlan == I40E_VLAN_ANY) {
2659                                 del_list[num_del].vlan_tag = 0;
2660                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2661                         } else {
2662                                 del_list[num_del].vlan_tag =
2663                                         cpu_to_le16((u16)(f->vlan));
2664                         }
2665
2666                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2667                         del_list[num_del].flags = cmd_flags;
2668                         num_del++;
2669
2670                         /* flush a full buffer */
2671                         if (num_del == filter_list_len) {
2672                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2673                                                      num_del, &retval);
2674                                 memset(del_list, 0, list_size);
2675                                 num_del = 0;
2676                         }
2677                         /* Release memory for MAC filter entries which were
2678                          * synced up with HW.
2679                          */
2680                         hlist_del(&f->hlist);
2681                         kfree(f);
2682                 }
2683
2684                 if (num_del) {
2685                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2686                                              num_del, &retval);
2687                 }
2688
2689                 kfree(del_list);
2690                 del_list = NULL;
2691         }
2692
2693         if (!hlist_empty(&tmp_add_list)) {
2694                 /* Do all the adds now. */
2695                 filter_list_len = hw->aq.asq_buf_size /
2696                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2697                 list_size = filter_list_len *
2698                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2699                 add_list = kzalloc(list_size, GFP_ATOMIC);
2700                 if (!add_list)
2701                         goto err_no_memory;
2702
2703                 num_add = 0;
2704                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2705                         /* handle broadcast filters by updating the broadcast
2706                          * promiscuous flag instead of adding a MAC filter.
2707                          */
2708                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2709                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2710                                                               new->f))
2711                                         new->state = I40E_FILTER_FAILED;
2712                                 else
2713                                         new->state = I40E_FILTER_ACTIVE;
2714                                 continue;
2715                         }
2716
2717                         /* add to add array */
2718                         if (num_add == 0)
2719                                 add_head = new;
2720                         cmd_flags = 0;
2721                         ether_addr_copy(add_list[num_add].mac_addr,
2722                                         new->f->macaddr);
2723                         if (new->f->vlan == I40E_VLAN_ANY) {
2724                                 add_list[num_add].vlan_tag = 0;
2725                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2726                         } else {
2727                                 add_list[num_add].vlan_tag =
2728                                         cpu_to_le16((u16)(new->f->vlan));
2729                         }
2730                         add_list[num_add].queue_number = 0;
2731                         /* set invalid match method for later detection */
2732                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2733                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2734                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2735                         num_add++;
2736
2737                         /* flush a full buffer */
2738                         if (num_add == filter_list_len) {
2739                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2740                                                      add_head, num_add);
2741                                 memset(add_list, 0, list_size);
2742                                 num_add = 0;
2743                         }
2744                 }
2745                 if (num_add) {
2746                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2747                                              num_add);
2748                 }
2749                 /* Now move all of the filters from the temp add list back to
2750                  * the VSI's list.
2751                  */
2752                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2753                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2754                         /* Only update the state if we're still NEW */
2755                         if (new->f->state == I40E_FILTER_NEW)
2756                                 new->f->state = new->state;
2757                         hlist_del(&new->hlist);
2758                         netdev_hw_addr_refcnt(new->f, vsi->netdev, -1);
2759                         kfree(new);
2760                 }
2761                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2762                 kfree(add_list);
2763                 add_list = NULL;
2764         }
2765
2766         /* Determine the number of active and failed filters. */
2767         spin_lock_bh(&vsi->mac_filter_hash_lock);
2768         vsi->active_filters = 0;
2769         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2770                 if (f->state == I40E_FILTER_ACTIVE)
2771                         vsi->active_filters++;
2772                 else if (f->state == I40E_FILTER_FAILED)
2773                         failed_filters++;
2774         }
2775         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2776
2777         /* Check if we are able to exit overflow promiscuous mode. We can
2778          * safely exit if we didn't just enter, we no longer have any failed
2779          * filters, and we have reduced filters below the threshold value.
2780          */
2781         if (old_overflow && !failed_filters &&
2782             vsi->active_filters < vsi->promisc_threshold) {
2783                 dev_info(&pf->pdev->dev,
2784                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2785                          vsi_name);
2786                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2787                 vsi->promisc_threshold = 0;
2788         }
2789
2790         /* if the VF is not trusted do not do promisc */
2791         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2792                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2793                 goto out;
2794         }
2795
2796         new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2797
2798         /* If we are entering overflow promiscuous, we need to calculate a new
2799          * threshold for when we are safe to exit
2800          */
2801         if (!old_overflow && new_overflow)
2802                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2803
2804         /* check for changes in promiscuous modes */
2805         if (changed_flags & IFF_ALLMULTI) {
2806                 bool cur_multipromisc;
2807
2808                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2809                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2810                                                                vsi->seid,
2811                                                                cur_multipromisc,
2812                                                                NULL);
2813                 if (aq_ret) {
2814                         retval = i40e_aq_rc_to_posix(aq_ret,
2815                                                      hw->aq.asq_last_status);
2816                         dev_info(&pf->pdev->dev,
2817                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2818                                  vsi_name,
2819                                  i40e_stat_str(hw, aq_ret),
2820                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2821                 } else {
2822                         dev_info(&pf->pdev->dev, "%s allmulti mode.\n",
2823                                  cur_multipromisc ? "entering" : "leaving");
2824                 }
2825         }
2826
2827         if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
2828                 bool cur_promisc;
2829
2830                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2831                                new_overflow);
2832                 aq_ret = i40e_set_promiscuous(pf, cur_promisc);
2833                 if (aq_ret) {
2834                         retval = i40e_aq_rc_to_posix(aq_ret,
2835                                                      hw->aq.asq_last_status);
2836                         dev_info(&pf->pdev->dev,
2837                                  "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
2838                                  cur_promisc ? "on" : "off",
2839                                  vsi_name,
2840                                  i40e_stat_str(hw, aq_ret),
2841                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2842                 }
2843         }
2844 out:
2845         /* if something went wrong then set the changed flag so we try again */
2846         if (retval)
2847                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2848
2849         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2850         return retval;
2851
2852 err_no_memory:
2853         /* Restore elements on the temporary add and delete lists */
2854         spin_lock_bh(&vsi->mac_filter_hash_lock);
2855 err_no_memory_locked:
2856         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2857         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2858         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2859
2860         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2861         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2862         return -ENOMEM;
2863 }
2864
2865 /**
2866  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2867  * @pf: board private structure
2868  **/
2869 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2870 {
2871         int v;
2872
2873         if (!pf)
2874                 return;
2875         if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state))
2876                 return;
2877         if (test_bit(__I40E_VF_DISABLE, pf->state)) {
2878                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
2879                 return;
2880         }
2881
2882         for (v = 0; v < pf->num_alloc_vsi; v++) {
2883                 if (pf->vsi[v] &&
2884                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED) &&
2885                     !test_bit(__I40E_VSI_RELEASING, pf->vsi[v]->state)) {
2886                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2887
2888                         if (ret) {
2889                                 /* come back and try again later */
2890                                 set_bit(__I40E_MACVLAN_SYNC_PENDING,
2891                                         pf->state);
2892                                 break;
2893                         }
2894                 }
2895         }
2896 }
2897
2898 /**
2899  * i40e_max_xdp_frame_size - returns the maximum allowed frame size for XDP
2900  * @vsi: the vsi
2901  **/
2902 static int i40e_max_xdp_frame_size(struct i40e_vsi *vsi)
2903 {
2904         if (PAGE_SIZE >= 8192 || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
2905                 return I40E_RXBUFFER_2048;
2906         else
2907                 return I40E_RXBUFFER_3072;
2908 }
2909
2910 /**
2911  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2912  * @netdev: network interface device structure
2913  * @new_mtu: new value for maximum frame size
2914  *
2915  * Returns 0 on success, negative on failure
2916  **/
2917 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2918 {
2919         struct i40e_netdev_priv *np = netdev_priv(netdev);
2920         struct i40e_vsi *vsi = np->vsi;
2921         struct i40e_pf *pf = vsi->back;
2922
2923         if (i40e_enabled_xdp_vsi(vsi)) {
2924                 int frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2925
2926                 if (frame_size > i40e_max_xdp_frame_size(vsi))
2927                         return -EINVAL;
2928         }
2929
2930         netdev_dbg(netdev, "changing MTU from %d to %d\n",
2931                    netdev->mtu, new_mtu);
2932         netdev->mtu = new_mtu;
2933         if (netif_running(netdev))
2934                 i40e_vsi_reinit_locked(vsi);
2935         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
2936         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
2937         return 0;
2938 }
2939
2940 /**
2941  * i40e_ioctl - Access the hwtstamp interface
2942  * @netdev: network interface device structure
2943  * @ifr: interface request data
2944  * @cmd: ioctl command
2945  **/
2946 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2947 {
2948         struct i40e_netdev_priv *np = netdev_priv(netdev);
2949         struct i40e_pf *pf = np->vsi->back;
2950
2951         switch (cmd) {
2952         case SIOCGHWTSTAMP:
2953                 return i40e_ptp_get_ts_config(pf, ifr);
2954         case SIOCSHWTSTAMP:
2955                 return i40e_ptp_set_ts_config(pf, ifr);
2956         default:
2957                 return -EOPNOTSUPP;
2958         }
2959 }
2960
2961 /**
2962  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2963  * @vsi: the vsi being adjusted
2964  **/
2965 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2966 {
2967         struct i40e_vsi_context ctxt;
2968         i40e_status ret;
2969
2970         /* Don't modify stripping options if a port VLAN is active */
2971         if (vsi->info.pvid)
2972                 return;
2973
2974         if ((vsi->info.valid_sections &
2975              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2976             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2977                 return;  /* already enabled */
2978
2979         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2980         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2981                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2982
2983         ctxt.seid = vsi->seid;
2984         ctxt.info = vsi->info;
2985         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2986         if (ret) {
2987                 dev_info(&vsi->back->pdev->dev,
2988                          "update vlan stripping failed, err %s aq_err %s\n",
2989                          i40e_stat_str(&vsi->back->hw, ret),
2990                          i40e_aq_str(&vsi->back->hw,
2991                                      vsi->back->hw.aq.asq_last_status));
2992         }
2993 }
2994
2995 /**
2996  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2997  * @vsi: the vsi being adjusted
2998  **/
2999 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
3000 {
3001         struct i40e_vsi_context ctxt;
3002         i40e_status ret;
3003
3004         /* Don't modify stripping options if a port VLAN is active */
3005         if (vsi->info.pvid)
3006                 return;
3007
3008         if ((vsi->info.valid_sections &
3009              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
3010             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
3011              I40E_AQ_VSI_PVLAN_EMOD_MASK))
3012                 return;  /* already disabled */
3013
3014         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
3015         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
3016                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
3017
3018         ctxt.seid = vsi->seid;
3019         ctxt.info = vsi->info;
3020         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3021         if (ret) {
3022                 dev_info(&vsi->back->pdev->dev,
3023                          "update vlan stripping failed, err %s aq_err %s\n",
3024                          i40e_stat_str(&vsi->back->hw, ret),
3025                          i40e_aq_str(&vsi->back->hw,
3026                                      vsi->back->hw.aq.asq_last_status));
3027         }
3028 }
3029
3030 /**
3031  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
3032  * @vsi: the vsi being configured
3033  * @vid: vlan id to be added (0 = untagged only , -1 = any)
3034  *
3035  * This is a helper function for adding a new MAC/VLAN filter with the
3036  * specified VLAN for each existing MAC address already in the hash table.
3037  * This function does *not* perform any accounting to update filters based on
3038  * VLAN mode.
3039  *
3040  * NOTE: this function expects to be called while under the
3041  * mac_filter_hash_lock
3042  **/
3043 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
3044 {
3045         struct i40e_mac_filter *f, *add_f;
3046         struct hlist_node *h;
3047         int bkt;
3048
3049         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3050                 /* If we're asked to add a filter that has been marked for
3051                  * removal, it is safe to simply restore it to active state.
3052                  * __i40e_del_filter will have simply deleted any filters which
3053                  * were previously marked NEW or FAILED, so if it is currently
3054                  * marked REMOVE it must have previously been ACTIVE. Since we
3055                  * haven't yet run the sync filters task, just restore this
3056                  * filter to the ACTIVE state so that the sync task leaves it
3057                  * in place.
3058                  */
3059                 if (f->state == I40E_FILTER_REMOVE && f->vlan == vid) {
3060                         f->state = I40E_FILTER_ACTIVE;
3061                         continue;
3062                 } else if (f->state == I40E_FILTER_REMOVE) {
3063                         continue;
3064                 }
3065                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
3066                 if (!add_f) {
3067                         dev_info(&vsi->back->pdev->dev,
3068                                  "Could not add vlan filter %d for %pM\n",
3069                                  vid, f->macaddr);
3070                         return -ENOMEM;
3071                 }
3072         }
3073
3074         return 0;
3075 }
3076
3077 /**
3078  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
3079  * @vsi: the VSI being configured
3080  * @vid: VLAN id to be added
3081  **/
3082 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
3083 {
3084         int err;
3085
3086         if (vsi->info.pvid)
3087                 return -EINVAL;
3088
3089         /* The network stack will attempt to add VID=0, with the intention to
3090          * receive priority tagged packets with a VLAN of 0. Our HW receives
3091          * these packets by default when configured to receive untagged
3092          * packets, so we don't need to add a filter for this case.
3093          * Additionally, HW interprets adding a VID=0 filter as meaning to
3094          * receive *only* tagged traffic and stops receiving untagged traffic.
3095          * Thus, we do not want to actually add a filter for VID=0
3096          */
3097         if (!vid)
3098                 return 0;
3099
3100         /* Locked once because all functions invoked below iterates list*/
3101         spin_lock_bh(&vsi->mac_filter_hash_lock);
3102         err = i40e_add_vlan_all_mac(vsi, vid);
3103         spin_unlock_bh(&vsi->mac_filter_hash_lock);
3104         if (err)
3105                 return err;
3106
3107         /* schedule our worker thread which will take care of
3108          * applying the new filter changes
3109          */
3110         i40e_service_event_schedule(vsi->back);
3111         return 0;
3112 }
3113
3114 /**
3115  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
3116  * @vsi: the vsi being configured
3117  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
3118  *
3119  * This function should be used to remove all VLAN filters which match the
3120  * given VID. It does not schedule the service event and does not take the
3121  * mac_filter_hash_lock so it may be combined with other operations under
3122  * a single invocation of the mac_filter_hash_lock.
3123  *
3124  * NOTE: this function expects to be called while under the
3125  * mac_filter_hash_lock
3126  */
3127 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
3128 {
3129         struct i40e_mac_filter *f;
3130         struct hlist_node *h;
3131         int bkt;
3132
3133         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
3134                 if (f->vlan == vid)
3135                         __i40e_del_filter(vsi, f);
3136         }
3137 }
3138
3139 /**
3140  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
3141  * @vsi: the VSI being configured
3142  * @vid: VLAN id to be removed
3143  **/
3144 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
3145 {
3146         if (!vid || vsi->info.pvid)
3147                 return;
3148
3149         spin_lock_bh(&vsi->mac_filter_hash_lock);
3150         i40e_rm_vlan_all_mac(vsi, vid);
3151         spin_unlock_bh(&vsi->mac_filter_hash_lock);
3152
3153         /* schedule our worker thread which will take care of
3154          * applying the new filter changes
3155          */
3156         i40e_service_event_schedule(vsi->back);
3157 }
3158
3159 /**
3160  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
3161  * @netdev: network interface to be adjusted
3162  * @proto: unused protocol value
3163  * @vid: vlan id to be added
3164  *
3165  * net_device_ops implementation for adding vlan ids
3166  **/
3167 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
3168                                 __always_unused __be16 proto, u16 vid)
3169 {
3170         struct i40e_netdev_priv *np = netdev_priv(netdev);
3171         struct i40e_vsi *vsi = np->vsi;
3172         int ret = 0;
3173
3174         if (vid >= VLAN_N_VID)
3175                 return -EINVAL;
3176
3177         ret = i40e_vsi_add_vlan(vsi, vid);
3178         if (!ret)
3179                 set_bit(vid, vsi->active_vlans);
3180
3181         return ret;
3182 }
3183
3184 /**
3185  * i40e_vlan_rx_add_vid_up - Add a vlan id filter to HW offload in UP path
3186  * @netdev: network interface to be adjusted
3187  * @proto: unused protocol value
3188  * @vid: vlan id to be added
3189  **/
3190 static void i40e_vlan_rx_add_vid_up(struct net_device *netdev,
3191                                     __always_unused __be16 proto, u16 vid)
3192 {
3193         struct i40e_netdev_priv *np = netdev_priv(netdev);
3194         struct i40e_vsi *vsi = np->vsi;
3195
3196         if (vid >= VLAN_N_VID)
3197                 return;
3198         set_bit(vid, vsi->active_vlans);
3199 }
3200
3201 /**
3202  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
3203  * @netdev: network interface to be adjusted
3204  * @proto: unused protocol value
3205  * @vid: vlan id to be removed
3206  *
3207  * net_device_ops implementation for removing vlan ids
3208  **/
3209 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
3210                                  __always_unused __be16 proto, u16 vid)
3211 {
3212         struct i40e_netdev_priv *np = netdev_priv(netdev);
3213         struct i40e_vsi *vsi = np->vsi;
3214
3215         /* return code is ignored as there is nothing a user
3216          * can do about failure to remove and a log message was
3217          * already printed from the other function
3218          */
3219         i40e_vsi_kill_vlan(vsi, vid);
3220
3221         clear_bit(vid, vsi->active_vlans);
3222
3223         return 0;
3224 }
3225
3226 /**
3227  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
3228  * @vsi: the vsi being brought back up
3229  **/
3230 static void i40e_restore_vlan(struct i40e_vsi *vsi)
3231 {
3232         u16 vid;
3233
3234         if (!vsi->netdev)
3235                 return;
3236
3237         if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
3238                 i40e_vlan_stripping_enable(vsi);
3239         else
3240                 i40e_vlan_stripping_disable(vsi);
3241
3242         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
3243                 i40e_vlan_rx_add_vid_up(vsi->netdev, htons(ETH_P_8021Q),
3244                                         vid);
3245 }
3246
3247 /**
3248  * i40e_vsi_add_pvid - Add pvid for the VSI
3249  * @vsi: the vsi being adjusted
3250  * @vid: the vlan id to set as a PVID
3251  **/
3252 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
3253 {
3254         struct i40e_vsi_context ctxt;
3255         i40e_status ret;
3256
3257         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
3258         vsi->info.pvid = cpu_to_le16(vid);
3259         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
3260                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
3261                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
3262
3263         ctxt.seid = vsi->seid;
3264         ctxt.info = vsi->info;
3265         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
3266         if (ret) {
3267                 dev_info(&vsi->back->pdev->dev,
3268                          "add pvid failed, err %s aq_err %s\n",
3269                          i40e_stat_str(&vsi->back->hw, ret),
3270                          i40e_aq_str(&vsi->back->hw,
3271                                      vsi->back->hw.aq.asq_last_status));
3272                 return -ENOENT;
3273         }
3274
3275         return 0;
3276 }
3277
3278 /**
3279  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
3280  * @vsi: the vsi being adjusted
3281  *
3282  * Just use the vlan_rx_register() service to put it back to normal
3283  **/
3284 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
3285 {
3286         vsi->info.pvid = 0;
3287
3288         i40e_vlan_stripping_disable(vsi);
3289 }
3290
3291 /**
3292  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
3293  * @vsi: ptr to the VSI
3294  *
3295  * If this function returns with an error, then it's possible one or
3296  * more of the rings is populated (while the rest are not).  It is the
3297  * callers duty to clean those orphaned rings.
3298  *
3299  * Return 0 on success, negative on failure
3300  **/
3301 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
3302 {
3303         int i, err = 0;
3304
3305         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3306                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
3307
3308         if (!i40e_enabled_xdp_vsi(vsi))
3309                 return err;
3310
3311         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3312                 err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);
3313
3314         return err;
3315 }
3316
3317 /**
3318  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
3319  * @vsi: ptr to the VSI
3320  *
3321  * Free VSI's transmit software resources
3322  **/
3323 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
3324 {
3325         int i;
3326
3327         if (vsi->tx_rings) {
3328                 for (i = 0; i < vsi->num_queue_pairs; i++)
3329                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
3330                                 i40e_free_tx_resources(vsi->tx_rings[i]);
3331         }
3332
3333         if (vsi->xdp_rings) {
3334                 for (i = 0; i < vsi->num_queue_pairs; i++)
3335                         if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
3336                                 i40e_free_tx_resources(vsi->xdp_rings[i]);
3337         }
3338 }
3339
3340 /**
3341  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
3342  * @vsi: ptr to the VSI
3343  *
3344  * If this function returns with an error, then it's possible one or
3345  * more of the rings is populated (while the rest are not).  It is the
3346  * callers duty to clean those orphaned rings.
3347  *
3348  * Return 0 on success, negative on failure
3349  **/
3350 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
3351 {
3352         int i, err = 0;
3353
3354         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3355                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
3356         return err;
3357 }
3358
3359 /**
3360  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
3361  * @vsi: ptr to the VSI
3362  *
3363  * Free all receive software resources
3364  **/
3365 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
3366 {
3367         int i;
3368
3369         if (!vsi->rx_rings)
3370                 return;
3371
3372         for (i = 0; i < vsi->num_queue_pairs; i++)
3373                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
3374                         i40e_free_rx_resources(vsi->rx_rings[i]);
3375 }
3376
3377 /**
3378  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
3379  * @ring: The Tx ring to configure
3380  *
3381  * This enables/disables XPS for a given Tx descriptor ring
3382  * based on the TCs enabled for the VSI that ring belongs to.
3383  **/
3384 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
3385 {
3386         int cpu;
3387
3388         if (!ring->q_vector || !ring->netdev || ring->ch)
3389                 return;
3390
3391         /* We only initialize XPS once, so as not to overwrite user settings */
3392         if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
3393                 return;
3394
3395         cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
3396         netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
3397                             ring->queue_index);
3398 }
3399
3400 /**
3401  * i40e_xsk_pool - Retrieve the AF_XDP buffer pool if XDP and ZC is enabled
3402  * @ring: The Tx or Rx ring
3403  *
3404  * Returns the AF_XDP buffer pool or NULL.
3405  **/
3406 static struct xsk_buff_pool *i40e_xsk_pool(struct i40e_ring *ring)
3407 {
3408         bool xdp_on = i40e_enabled_xdp_vsi(ring->vsi);
3409         int qid = ring->queue_index;
3410
3411         if (ring_is_xdp(ring))
3412                 qid -= ring->vsi->alloc_queue_pairs;
3413
3414         if (!xdp_on || !test_bit(qid, ring->vsi->af_xdp_zc_qps))
3415                 return NULL;
3416
3417         return xsk_get_pool_from_qid(ring->vsi->netdev, qid);
3418 }
3419
3420 /**
3421  * i40e_configure_tx_ring - Configure a transmit ring context and rest
3422  * @ring: The Tx ring to configure
3423  *
3424  * Configure the Tx descriptor ring in the HMC context.
3425  **/
3426 static int i40e_configure_tx_ring(struct i40e_ring *ring)
3427 {
3428         struct i40e_vsi *vsi = ring->vsi;
3429         u16 pf_q = vsi->base_queue + ring->queue_index;
3430         struct i40e_hw *hw = &vsi->back->hw;
3431         struct i40e_hmc_obj_txq tx_ctx;
3432         i40e_status err = 0;
3433         u32 qtx_ctl = 0;
3434
3435         if (ring_is_xdp(ring))
3436                 ring->xsk_pool = i40e_xsk_pool(ring);
3437
3438         /* some ATR related tx ring init */
3439         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3440                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3441                 ring->atr_count = 0;
3442         } else {
3443                 ring->atr_sample_rate = 0;
3444         }
3445
3446         /* configure XPS */
3447         i40e_config_xps_tx_ring(ring);
3448
3449         /* clear the context structure first */
3450         memset(&tx_ctx, 0, sizeof(tx_ctx));
3451
3452         tx_ctx.new_context = 1;
3453         tx_ctx.base = (ring->dma / 128);
3454         tx_ctx.qlen = ring->count;
3455         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3456                                                I40E_FLAG_FD_ATR_ENABLED));
3457         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3458         /* FDIR VSI tx ring can still use RS bit and writebacks */
3459         if (vsi->type != I40E_VSI_FDIR)
3460                 tx_ctx.head_wb_ena = 1;
3461         tx_ctx.head_wb_addr = ring->dma +
3462                               (ring->count * sizeof(struct i40e_tx_desc));
3463
3464         /* As part of VSI creation/update, FW allocates certain
3465          * Tx arbitration queue sets for each TC enabled for
3466          * the VSI. The FW returns the handles to these queue
3467          * sets as part of the response buffer to Add VSI,
3468          * Update VSI, etc. AQ commands. It is expected that
3469          * these queue set handles be associated with the Tx
3470          * queues by the driver as part of the TX queue context
3471          * initialization. This has to be done regardless of
3472          * DCB as by default everything is mapped to TC0.
3473          */
3474
3475         if (ring->ch)
3476                 tx_ctx.rdylist =
3477                         le16_to_cpu(ring->ch->info.qs_handle[ring->dcb_tc]);
3478
3479         else
3480                 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3481
3482         tx_ctx.rdylist_act = 0;
3483
3484         /* clear the context in the HMC */
3485         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3486         if (err) {
3487                 dev_info(&vsi->back->pdev->dev,
3488                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3489                          ring->queue_index, pf_q, err);
3490                 return -ENOMEM;
3491         }
3492
3493         /* set the context in the HMC */
3494         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3495         if (err) {
3496                 dev_info(&vsi->back->pdev->dev,
3497                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3498                          ring->queue_index, pf_q, err);
3499                 return -ENOMEM;
3500         }
3501
3502         /* Now associate this queue with this PCI function */
3503         if (ring->ch) {
3504                 if (ring->ch->type == I40E_VSI_VMDQ2)
3505                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3506                 else
3507                         return -EINVAL;
3508
3509                 qtx_ctl |= (ring->ch->vsi_number <<
3510                             I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3511                             I40E_QTX_CTL_VFVM_INDX_MASK;
3512         } else {
3513                 if (vsi->type == I40E_VSI_VMDQ2) {
3514                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3515                         qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3516                                     I40E_QTX_CTL_VFVM_INDX_MASK;
3517                 } else {
3518                         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3519                 }
3520         }
3521
3522         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3523                     I40E_QTX_CTL_PF_INDX_MASK);
3524         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3525         i40e_flush(hw);
3526
3527         /* cache tail off for easier writes later */
3528         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3529
3530         return 0;
3531 }
3532
3533 /**
3534  * i40e_rx_offset - Return expected offset into page to access data
3535  * @rx_ring: Ring we are requesting offset of
3536  *
3537  * Returns the offset value for ring into the data buffer.
3538  */
3539 static unsigned int i40e_rx_offset(struct i40e_ring *rx_ring)
3540 {
3541         return ring_uses_build_skb(rx_ring) ? I40E_SKB_PAD : 0;
3542 }
3543
3544 /**
3545  * i40e_configure_rx_ring - Configure a receive ring context
3546  * @ring: The Rx ring to configure
3547  *
3548  * Configure the Rx descriptor ring in the HMC context.
3549  **/
3550 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3551 {
3552         struct i40e_vsi *vsi = ring->vsi;
3553         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3554         u16 pf_q = vsi->base_queue + ring->queue_index;
3555         struct i40e_hw *hw = &vsi->back->hw;
3556         struct i40e_hmc_obj_rxq rx_ctx;
3557         i40e_status err = 0;
3558         bool ok;
3559         int ret;
3560
3561         bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
3562
3563         /* clear the context structure first */
3564         memset(&rx_ctx, 0, sizeof(rx_ctx));
3565
3566         if (ring->vsi->type == I40E_VSI_MAIN)
3567                 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
3568
3569         ring->xsk_pool = i40e_xsk_pool(ring);
3570         if (ring->xsk_pool) {
3571                 ring->rx_buf_len =
3572                   xsk_pool_get_rx_frame_size(ring->xsk_pool);
3573                 /* For AF_XDP ZC, we disallow packets to span on
3574                  * multiple buffers, thus letting us skip that
3575                  * handling in the fast-path.
3576                  */
3577                 chain_len = 1;
3578                 ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3579                                                  MEM_TYPE_XSK_BUFF_POOL,
3580                                                  NULL);
3581                 if (ret)
3582                         return ret;
3583                 dev_info(&vsi->back->pdev->dev,
3584                          "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
3585                          ring->queue_index);
3586
3587         } else {
3588                 ring->rx_buf_len = vsi->rx_buf_len;
3589                 if (ring->vsi->type == I40E_VSI_MAIN) {
3590                         ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3591                                                          MEM_TYPE_PAGE_SHARED,
3592                                                          NULL);
3593                         if (ret)
3594                                 return ret;
3595                 }
3596         }
3597
3598         rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
3599                                     BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3600
3601         rx_ctx.base = (ring->dma / 128);
3602         rx_ctx.qlen = ring->count;
3603
3604         /* use 16 byte descriptors */
3605         rx_ctx.dsize = 0;
3606
3607         /* descriptor type is always zero
3608          * rx_ctx.dtype = 0;
3609          */
3610         rx_ctx.hsplit_0 = 0;
3611
3612         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3613         if (hw->revision_id == 0)
3614                 rx_ctx.lrxqthresh = 0;
3615         else
3616                 rx_ctx.lrxqthresh = 1;
3617         rx_ctx.crcstrip = 1;
3618         rx_ctx.l2tsel = 1;
3619         /* this controls whether VLAN is stripped from inner headers */
3620         rx_ctx.showiv = 0;
3621         /* set the prefena field to 1 because the manual says to */
3622         rx_ctx.prefena = 1;
3623
3624         /* clear the context in the HMC */
3625         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3626         if (err) {
3627                 dev_info(&vsi->back->pdev->dev,
3628                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3629                          ring->queue_index, pf_q, err);
3630                 return -ENOMEM;
3631         }
3632
3633         /* set the context in the HMC */
3634         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3635         if (err) {
3636                 dev_info(&vsi->back->pdev->dev,
3637                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3638                          ring->queue_index, pf_q, err);
3639                 return -ENOMEM;
3640         }
3641
3642         /* configure Rx buffer alignment */
3643         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3644                 clear_ring_build_skb_enabled(ring);
3645         else
3646                 set_ring_build_skb_enabled(ring);
3647
3648         ring->rx_offset = i40e_rx_offset(ring);
3649
3650         /* cache tail for quicker writes, and clear the reg before use */
3651         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3652         writel(0, ring->tail);
3653
3654         if (ring->xsk_pool) {
3655                 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq);
3656                 ok = i40e_alloc_rx_buffers_zc(ring, I40E_DESC_UNUSED(ring));
3657         } else {
3658                 ok = !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3659         }
3660         if (!ok) {
3661                 /* Log this in case the user has forgotten to give the kernel
3662                  * any buffers, even later in the application.
3663                  */
3664                 dev_info(&vsi->back->pdev->dev,
3665                          "Failed to allocate some buffers on %sRx ring %d (pf_q %d)\n",
3666                          ring->xsk_pool ? "AF_XDP ZC enabled " : "",
3667                          ring->queue_index, pf_q);
3668         }
3669
3670         return 0;
3671 }
3672
3673 /**
3674  * i40e_vsi_configure_tx - Configure the VSI for Tx
3675  * @vsi: VSI structure describing this set of rings and resources
3676  *
3677  * Configure the Tx VSI for operation.
3678  **/
3679 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3680 {
3681         int err = 0;
3682         u16 i;
3683
3684         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3685                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3686
3687         if (err || !i40e_enabled_xdp_vsi(vsi))
3688                 return err;
3689
3690         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3691                 err = i40e_configure_tx_ring(vsi->xdp_rings[i]);
3692
3693         return err;
3694 }
3695
3696 /**
3697  * i40e_calculate_vsi_rx_buf_len - Calculates buffer length
3698  *
3699  * @vsi: VSI to calculate rx_buf_len from
3700  */
3701 static u16 i40e_calculate_vsi_rx_buf_len(struct i40e_vsi *vsi)
3702 {
3703         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3704                 return I40E_RXBUFFER_2048;
3705
3706 #if (PAGE_SIZE < 8192)
3707         if (!I40E_2K_TOO_SMALL_WITH_PADDING && vsi->netdev->mtu <= ETH_DATA_LEN)
3708                 return I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3709 #endif
3710
3711         return PAGE_SIZE < 8192 ? I40E_RXBUFFER_3072 : I40E_RXBUFFER_2048;
3712 }
3713
3714 /**
3715  * i40e_vsi_configure_rx - Configure the VSI for Rx
3716  * @vsi: the VSI being configured
3717  *
3718  * Configure the Rx VSI for operation.
3719  **/
3720 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3721 {
3722         int err = 0;
3723         u16 i;
3724
3725         vsi->max_frame = I40E_MAX_RXBUFFER;
3726         vsi->rx_buf_len = i40e_calculate_vsi_rx_buf_len(vsi);
3727
3728 #if (PAGE_SIZE < 8192)
3729         if (vsi->netdev && !I40E_2K_TOO_SMALL_WITH_PADDING &&
3730             vsi->netdev->mtu <= ETH_DATA_LEN)
3731                 vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3732 #endif
3733
3734         /* set up individual rings */
3735         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3736                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3737
3738         return err;
3739 }
3740
3741 /**
3742  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3743  * @vsi: ptr to the VSI
3744  **/
3745 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3746 {
3747         struct i40e_ring *tx_ring, *rx_ring;
3748         u16 qoffset, qcount;
3749         int i, n;
3750
3751         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3752                 /* Reset the TC information */
3753                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3754                         rx_ring = vsi->rx_rings[i];
3755                         tx_ring = vsi->tx_rings[i];
3756                         rx_ring->dcb_tc = 0;
3757                         tx_ring->dcb_tc = 0;
3758                 }
3759                 return;
3760         }
3761
3762         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3763                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3764                         continue;
3765
3766                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3767                 qcount = vsi->tc_config.tc_info[n].qcount;
3768                 for (i = qoffset; i < (qoffset + qcount); i++) {
3769                         rx_ring = vsi->rx_rings[i];
3770                         tx_ring = vsi->tx_rings[i];
3771                         rx_ring->dcb_tc = n;
3772                         tx_ring->dcb_tc = n;
3773                 }
3774         }
3775 }
3776
3777 /**
3778  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3779  * @vsi: ptr to the VSI
3780  **/
3781 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3782 {
3783         if (vsi->netdev)
3784                 i40e_set_rx_mode(vsi->netdev);
3785 }
3786
3787 /**
3788  * i40e_reset_fdir_filter_cnt - Reset flow director filter counters
3789  * @pf: Pointer to the targeted PF
3790  *
3791  * Set all flow director counters to 0.
3792  */
3793 static void i40e_reset_fdir_filter_cnt(struct i40e_pf *pf)
3794 {
3795         pf->fd_tcp4_filter_cnt = 0;
3796         pf->fd_udp4_filter_cnt = 0;
3797         pf->fd_sctp4_filter_cnt = 0;
3798         pf->fd_ip4_filter_cnt = 0;
3799         pf->fd_tcp6_filter_cnt = 0;
3800         pf->fd_udp6_filter_cnt = 0;
3801         pf->fd_sctp6_filter_cnt = 0;
3802         pf->fd_ip6_filter_cnt = 0;
3803 }
3804
3805 /**
3806  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3807  * @vsi: Pointer to the targeted VSI
3808  *
3809  * This function replays the hlist on the hw where all the SB Flow Director
3810  * filters were saved.
3811  **/
3812 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3813 {
3814         struct i40e_fdir_filter *filter;
3815         struct i40e_pf *pf = vsi->back;
3816         struct hlist_node *node;
3817
3818         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3819                 return;
3820
3821         /* Reset FDir counters as we're replaying all existing filters */
3822         i40e_reset_fdir_filter_cnt(pf);
3823
3824         hlist_for_each_entry_safe(filter, node,
3825                                   &pf->fdir_filter_list, fdir_node) {
3826                 i40e_add_del_fdir(vsi, filter, true);
3827         }
3828 }
3829
3830 /**
3831  * i40e_vsi_configure - Set up the VSI for action
3832  * @vsi: the VSI being configured
3833  **/
3834 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3835 {
3836         int err;
3837
3838         i40e_set_vsi_rx_mode(vsi);
3839         i40e_restore_vlan(vsi);
3840         i40e_vsi_config_dcb_rings(vsi);
3841         err = i40e_vsi_configure_tx(vsi);
3842         if (!err)
3843                 err = i40e_vsi_configure_rx(vsi);
3844
3845         return err;
3846 }
3847
3848 /**
3849  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3850  * @vsi: the VSI being configured
3851  **/
3852 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3853 {
3854         bool has_xdp = i40e_enabled_xdp_vsi(vsi);
3855         struct i40e_pf *pf = vsi->back;
3856         struct i40e_hw *hw = &pf->hw;
3857         u16 vector;
3858         int i, q;
3859         u32 qp;
3860
3861         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3862          * and PFINT_LNKLSTn registers, e.g.:
3863          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3864          */
3865         qp = vsi->base_queue;
3866         vector = vsi->base_vector;
3867         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3868                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3869
3870                 q_vector->rx.next_update = jiffies + 1;
3871                 q_vector->rx.target_itr =
3872                         ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
3873                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3874                      q_vector->rx.target_itr >> 1);
3875                 q_vector->rx.current_itr = q_vector->rx.target_itr;
3876
3877                 q_vector->tx.next_update = jiffies + 1;
3878                 q_vector->tx.target_itr =
3879                         ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
3880                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3881                      q_vector->tx.target_itr >> 1);
3882                 q_vector->tx.current_itr = q_vector->tx.target_itr;
3883
3884                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3885                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3886
3887                 /* begin of linked list for RX queue assigned to this vector */
3888                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3889                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3890                         u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
3891                         u32 val;
3892
3893                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3894                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3895                               (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3896                               (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
3897                               (I40E_QUEUE_TYPE_TX <<
3898                                I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3899
3900                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3901
3902                         if (has_xdp) {
3903                                 /* TX queue with next queue set to TX */
3904                                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3905                                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3906                                       (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3907                                       (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3908                                       (I40E_QUEUE_TYPE_TX <<
3909                                        I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3910
3911                                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3912                         }
3913                         /* TX queue with next RX or end of linked list */
3914                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3915                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3916                               (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3917                               ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3918                               (I40E_QUEUE_TYPE_RX <<
3919                                I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3920
3921                         /* Terminate the linked list */
3922                         if (q == (q_vector->num_ringpairs - 1))
3923                                 val |= (I40E_QUEUE_END_OF_LIST <<
3924                                         I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3925
3926                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3927                         qp++;
3928                 }
3929         }
3930
3931         i40e_flush(hw);
3932 }
3933
3934 /**
3935  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3936  * @pf: pointer to private device data structure
3937  **/
3938 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3939 {
3940         struct i40e_hw *hw = &pf->hw;
3941         u32 val;
3942
3943         /* clear things first */
3944         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3945         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3946
3947         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3948               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3949               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3950               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3951               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3952               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3953               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3954               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3955
3956         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3957                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3958
3959         if (pf->flags & I40E_FLAG_PTP)
3960                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3961
3962         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3963
3964         /* SW_ITR_IDX = 0, but don't change INTENA */
3965         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3966                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3967
3968         /* OTHER_ITR_IDX = 0 */
3969         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3970 }
3971
3972 /**
3973  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3974  * @vsi: the VSI being configured
3975  **/
3976 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3977 {
3978         u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
3979         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3980         struct i40e_pf *pf = vsi->back;
3981         struct i40e_hw *hw = &pf->hw;
3982
3983         /* set the ITR configuration */
3984         q_vector->rx.next_update = jiffies + 1;
3985         q_vector->rx.target_itr = ITR_TO_REG(vsi->rx_rings[0]->itr_setting);
3986         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.target_itr >> 1);
3987         q_vector->rx.current_itr = q_vector->rx.target_itr;
3988         q_vector->tx.next_update = jiffies + 1;
3989         q_vector->tx.target_itr = ITR_TO_REG(vsi->tx_rings[0]->itr_setting);
3990         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.target_itr >> 1);
3991         q_vector->tx.current_itr = q_vector->tx.target_itr;
3992
3993         i40e_enable_misc_int_causes(pf);
3994
3995         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3996         wr32(hw, I40E_PFINT_LNKLST0, 0);
3997
3998         /* Associate the queue pair to the vector and enable the queue
3999          * interrupt RX queue in linked list with next queue set to TX
4000          */
4001         wr32(hw, I40E_QINT_RQCTL(0), I40E_QINT_RQCTL_VAL(nextqp, 0, TX));
4002
4003         if (i40e_enabled_xdp_vsi(vsi)) {
4004                 /* TX queue in linked list with next queue set to TX */
4005                 wr32(hw, I40E_QINT_TQCTL(nextqp),
4006                      I40E_QINT_TQCTL_VAL(nextqp, 0, TX));
4007         }
4008
4009         /* last TX queue so the next RX queue doesn't matter */
4010         wr32(hw, I40E_QINT_TQCTL(0),
4011              I40E_QINT_TQCTL_VAL(I40E_QUEUE_END_OF_LIST, 0, RX));
4012         i40e_flush(hw);
4013 }
4014
4015 /**
4016  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
4017  * @pf: board private structure
4018  **/
4019 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
4020 {
4021         struct i40e_hw *hw = &pf->hw;
4022
4023         wr32(hw, I40E_PFINT_DYN_CTL0,
4024              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
4025         i40e_flush(hw);
4026 }
4027
4028 /**
4029  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
4030  * @pf: board private structure
4031  **/
4032 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
4033 {
4034         struct i40e_hw *hw = &pf->hw;
4035         u32 val;
4036
4037         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
4038               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
4039               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
4040
4041         wr32(hw, I40E_PFINT_DYN_CTL0, val);
4042         i40e_flush(hw);
4043 }
4044
4045 /**
4046  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
4047  * @irq: interrupt number
4048  * @data: pointer to a q_vector
4049  **/
4050 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
4051 {
4052         struct i40e_q_vector *q_vector = data;
4053
4054         if (!q_vector->tx.ring && !q_vector->rx.ring)
4055                 return IRQ_HANDLED;
4056
4057         napi_schedule_irqoff(&q_vector->napi);
4058
4059         return IRQ_HANDLED;
4060 }
4061
4062 /**
4063  * i40e_irq_affinity_notify - Callback for affinity changes
4064  * @notify: context as to what irq was changed
4065  * @mask: the new affinity mask
4066  *
4067  * This is a callback function used by the irq_set_affinity_notifier function
4068  * so that we may register to receive changes to the irq affinity masks.
4069  **/
4070 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
4071                                      const cpumask_t *mask)
4072 {
4073         struct i40e_q_vector *q_vector =
4074                 container_of(notify, struct i40e_q_vector, affinity_notify);
4075
4076         cpumask_copy(&q_vector->affinity_mask, mask);
4077 }
4078
4079 /**
4080  * i40e_irq_affinity_release - Callback for affinity notifier release
4081  * @ref: internal core kernel usage
4082  *
4083  * This is a callback function used by the irq_set_affinity_notifier function
4084  * to inform the current notification subscriber that they will no longer
4085  * receive notifications.
4086  **/
4087 static void i40e_irq_affinity_release(struct kref *ref) {}
4088
4089 /**
4090  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
4091  * @vsi: the VSI being configured
4092  * @basename: name for the vector
4093  *
4094  * Allocates MSI-X vectors and requests interrupts from the kernel.
4095  **/
4096 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
4097 {
4098         int q_vectors = vsi->num_q_vectors;
4099         struct i40e_pf *pf = vsi->back;
4100         int base = vsi->base_vector;
4101         int rx_int_idx = 0;
4102         int tx_int_idx = 0;
4103         int vector, err;
4104         int irq_num;
4105         int cpu;
4106
4107         for (vector = 0; vector < q_vectors; vector++) {
4108                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
4109
4110                 irq_num = pf->msix_entries[base + vector].vector;
4111
4112                 if (q_vector->tx.ring && q_vector->rx.ring) {
4113                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
4114                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
4115                         tx_int_idx++;
4116                 } else if (q_vector->rx.ring) {
4117                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
4118                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
4119                 } else if (q_vector->tx.ring) {
4120                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
4121                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
4122                 } else {
4123                         /* skip this unused q_vector */
4124                         continue;
4125                 }
4126                 err = request_irq(irq_num,
4127                                   vsi->irq_handler,
4128                                   0,
4129                                   q_vector->name,
4130                                   q_vector);
4131                 if (err) {
4132                         dev_info(&pf->pdev->dev,
4133                                  "MSIX request_irq failed, error: %d\n", err);
4134                         goto free_queue_irqs;
4135                 }
4136
4137                 /* register for affinity change notifications */
4138                 q_vector->irq_num = irq_num;
4139                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
4140                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
4141                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
4142                 /* Spread affinity hints out across online CPUs.
4143                  *
4144                  * get_cpu_mask returns a static constant mask with
4145                  * a permanent lifetime so it's ok to pass to
4146                  * irq_update_affinity_hint without making a copy.
4147                  */
4148                 cpu = cpumask_local_spread(q_vector->v_idx, -1);
4149                 irq_update_affinity_hint(irq_num, get_cpu_mask(cpu));
4150         }
4151
4152         vsi->irqs_ready = true;
4153         return 0;
4154
4155 free_queue_irqs:
4156         while (vector) {
4157                 vector--;
4158                 irq_num = pf->msix_entries[base + vector].vector;
4159                 irq_set_affinity_notifier(irq_num, NULL);
4160                 irq_update_affinity_hint(irq_num, NULL);
4161                 free_irq(irq_num, &vsi->q_vectors[vector]);
4162         }
4163         return err;
4164 }
4165
4166 /**
4167  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
4168  * @vsi: the VSI being un-configured
4169  **/
4170 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
4171 {
4172         struct i40e_pf *pf = vsi->back;
4173         struct i40e_hw *hw = &pf->hw;
4174         int base = vsi->base_vector;
4175         int i;
4176
4177         /* disable interrupt causation from each queue */
4178         for (i = 0; i < vsi->num_queue_pairs; i++) {
4179                 u32 val;
4180
4181                 val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
4182                 val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
4183                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);
4184
4185                 val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
4186                 val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
4187                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);
4188
4189                 if (!i40e_enabled_xdp_vsi(vsi))
4190                         continue;
4191                 wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
4192         }
4193
4194         /* disable each interrupt */
4195         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4196                 for (i = vsi->base_vector;
4197                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
4198                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
4199
4200                 i40e_flush(hw);
4201                 for (i = 0; i < vsi->num_q_vectors; i++)
4202                         synchronize_irq(pf->msix_entries[i + base].vector);
4203         } else {
4204                 /* Legacy and MSI mode - this stops all interrupt handling */
4205                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
4206                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
4207                 i40e_flush(hw);
4208                 synchronize_irq(pf->pdev->irq);
4209         }
4210 }
4211
4212 /**
4213  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
4214  * @vsi: the VSI being configured
4215  **/
4216 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
4217 {
4218         struct i40e_pf *pf = vsi->back;
4219         int i;
4220
4221         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4222                 for (i = 0; i < vsi->num_q_vectors; i++)
4223                         i40e_irq_dynamic_enable(vsi, i);
4224         } else {
4225                 i40e_irq_dynamic_enable_icr0(pf);
4226         }
4227
4228         i40e_flush(&pf->hw);
4229         return 0;
4230 }
4231
4232 /**
4233  * i40e_free_misc_vector - Free the vector that handles non-queue events
4234  * @pf: board private structure
4235  **/
4236 static void i40e_free_misc_vector(struct i40e_pf *pf)
4237 {
4238         /* Disable ICR 0 */
4239         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
4240         i40e_flush(&pf->hw);
4241
4242         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4243                 free_irq(pf->msix_entries[0].vector, pf);
4244                 clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
4245         }
4246 }
4247
4248 /**
4249  * i40e_intr - MSI/Legacy and non-queue interrupt handler
4250  * @irq: interrupt number
4251  * @data: pointer to a q_vector
4252  *
4253  * This is the handler used for all MSI/Legacy interrupts, and deals
4254  * with both queue and non-queue interrupts.  This is also used in
4255  * MSIX mode to handle the non-queue interrupts.
4256  **/
4257 static irqreturn_t i40e_intr(int irq, void *data)
4258 {
4259         struct i40e_pf *pf = (struct i40e_pf *)data;
4260         struct i40e_hw *hw = &pf->hw;
4261         irqreturn_t ret = IRQ_NONE;
4262         u32 icr0, icr0_remaining;
4263         u32 val, ena_mask;
4264
4265         icr0 = rd32(hw, I40E_PFINT_ICR0);
4266         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
4267
4268         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
4269         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
4270                 goto enable_intr;
4271
4272         /* if interrupt but no bits showing, must be SWINT */
4273         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
4274             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
4275                 pf->sw_int_count++;
4276
4277         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
4278             (icr0 & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
4279                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
4280                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
4281                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
4282         }
4283
4284         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
4285         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
4286                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
4287                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
4288
4289                 /* We do not have a way to disarm Queue causes while leaving
4290                  * interrupt enabled for all other causes, ideally
4291                  * interrupt should be disabled while we are in NAPI but
4292                  * this is not a performance path and napi_schedule()
4293                  * can deal with rescheduling.
4294                  */
4295                 if (!test_bit(__I40E_DOWN, pf->state))
4296                         napi_schedule_irqoff(&q_vector->napi);
4297         }
4298
4299         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
4300                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4301                 set_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
4302                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
4303         }
4304
4305         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
4306                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4307                 set_bit(__I40E_MDD_EVENT_PENDING, pf->state);
4308         }
4309
4310         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
4311                 /* disable any further VFLR event notifications */
4312                 if (test_bit(__I40E_VF_RESETS_DISABLED, pf->state)) {
4313                         u32 reg = rd32(hw, I40E_PFINT_ICR0_ENA);
4314
4315                         reg &= ~I40E_PFINT_ICR0_VFLR_MASK;
4316                         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
4317                 } else {
4318                         ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
4319                         set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4320                 }
4321         }
4322
4323         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
4324                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4325                         set_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
4326                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
4327                 val = rd32(hw, I40E_GLGEN_RSTAT);
4328                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
4329                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
4330                 if (val == I40E_RESET_CORER) {
4331                         pf->corer_count++;
4332                 } else if (val == I40E_RESET_GLOBR) {
4333                         pf->globr_count++;
4334                 } else if (val == I40E_RESET_EMPR) {
4335                         pf->empr_count++;
4336                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state);
4337                 }
4338         }
4339
4340         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
4341                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
4342                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
4343                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
4344                          rd32(hw, I40E_PFHMC_ERRORINFO),
4345                          rd32(hw, I40E_PFHMC_ERRORDATA));
4346         }
4347
4348         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
4349                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
4350
4351                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_EVENT0_MASK)
4352                         schedule_work(&pf->ptp_extts0_work);
4353
4354                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK)
4355                         i40e_ptp_tx_hwtstamp(pf);
4356
4357                 icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
4358         }
4359
4360         /* If a critical error is pending we have no choice but to reset the
4361          * device.
4362          * Report and mask out any remaining unexpected interrupts.
4363          */
4364         icr0_remaining = icr0 & ena_mask;
4365         if (icr0_remaining) {
4366                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
4367                          icr0_remaining);
4368                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
4369                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
4370                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
4371                         dev_info(&pf->pdev->dev, "device will be reset\n");
4372                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
4373                         i40e_service_event_schedule(pf);
4374                 }
4375                 ena_mask &= ~icr0_remaining;
4376         }
4377         ret = IRQ_HANDLED;
4378
4379 enable_intr:
4380         /* re-enable interrupt causes */
4381         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
4382         if (!test_bit(__I40E_DOWN, pf->state) ||
4383             test_bit(__I40E_RECOVERY_MODE, pf->state)) {
4384                 i40e_service_event_schedule(pf);
4385                 i40e_irq_dynamic_enable_icr0(pf);
4386         }
4387
4388         return ret;
4389 }
4390
4391 /**
4392  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
4393  * @tx_ring:  tx ring to clean
4394  * @budget:   how many cleans we're allowed
4395  *
4396  * Returns true if there's any budget left (e.g. the clean is finished)
4397  **/
4398 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
4399 {
4400         struct i40e_vsi *vsi = tx_ring->vsi;
4401         u16 i = tx_ring->next_to_clean;
4402         struct i40e_tx_buffer *tx_buf;
4403         struct i40e_tx_desc *tx_desc;
4404
4405         tx_buf = &tx_ring->tx_bi[i];
4406         tx_desc = I40E_TX_DESC(tx_ring, i);
4407         i -= tx_ring->count;
4408
4409         do {
4410                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
4411
4412                 /* if next_to_watch is not set then there is no work pending */
4413                 if (!eop_desc)
4414                         break;
4415
4416                 /* prevent any other reads prior to eop_desc */
4417                 smp_rmb();
4418
4419                 /* if the descriptor isn't done, no work yet to do */
4420                 if (!(eop_desc->cmd_type_offset_bsz &
4421                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
4422                         break;
4423
4424                 /* clear next_to_watch to prevent false hangs */
4425                 tx_buf->next_to_watch = NULL;
4426
4427                 tx_desc->buffer_addr = 0;
4428                 tx_desc->cmd_type_offset_bsz = 0;
4429                 /* move past filter desc */
4430                 tx_buf++;
4431                 tx_desc++;
4432                 i++;
4433                 if (unlikely(!i)) {
4434                         i -= tx_ring->count;
4435                         tx_buf = tx_ring->tx_bi;
4436                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4437                 }
4438                 /* unmap skb header data */
4439                 dma_unmap_single(tx_ring->dev,
4440                                  dma_unmap_addr(tx_buf, dma),
4441                                  dma_unmap_len(tx_buf, len),
4442                                  DMA_TO_DEVICE);
4443                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
4444                         kfree(tx_buf->raw_buf);
4445
4446                 tx_buf->raw_buf = NULL;
4447                 tx_buf->tx_flags = 0;
4448                 tx_buf->next_to_watch = NULL;
4449                 dma_unmap_len_set(tx_buf, len, 0);
4450                 tx_desc->buffer_addr = 0;
4451                 tx_desc->cmd_type_offset_bsz = 0;
4452
4453                 /* move us past the eop_desc for start of next FD desc */
4454                 tx_buf++;
4455                 tx_desc++;
4456                 i++;
4457                 if (unlikely(!i)) {
4458                         i -= tx_ring->count;
4459                         tx_buf = tx_ring->tx_bi;
4460                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4461                 }
4462
4463                 /* update budget accounting */
4464                 budget--;
4465         } while (likely(budget));
4466
4467         i += tx_ring->count;
4468         tx_ring->next_to_clean = i;
4469
4470         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
4471                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
4472
4473         return budget > 0;
4474 }
4475
4476 /**
4477  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
4478  * @irq: interrupt number
4479  * @data: pointer to a q_vector
4480  **/
4481 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
4482 {
4483         struct i40e_q_vector *q_vector = data;
4484         struct i40e_vsi *vsi;
4485
4486         if (!q_vector->tx.ring)
4487                 return IRQ_HANDLED;
4488
4489         vsi = q_vector->tx.ring->vsi;
4490         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
4491
4492         return IRQ_HANDLED;
4493 }
4494
4495 /**
4496  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
4497  * @vsi: the VSI being configured
4498  * @v_idx: vector index
4499  * @qp_idx: queue pair index
4500  **/
4501 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
4502 {
4503         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4504         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
4505         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
4506
4507         tx_ring->q_vector = q_vector;
4508         tx_ring->next = q_vector->tx.ring;
4509         q_vector->tx.ring = tx_ring;
4510         q_vector->tx.count++;
4511
4512         /* Place XDP Tx ring in the same q_vector ring list as regular Tx */
4513         if (i40e_enabled_xdp_vsi(vsi)) {
4514                 struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];
4515
4516                 xdp_ring->q_vector = q_vector;
4517                 xdp_ring->next = q_vector->tx.ring;
4518                 q_vector->tx.ring = xdp_ring;
4519                 q_vector->tx.count++;
4520         }
4521
4522         rx_ring->q_vector = q_vector;
4523         rx_ring->next = q_vector->rx.ring;
4524         q_vector->rx.ring = rx_ring;
4525         q_vector->rx.count++;
4526 }
4527
4528 /**
4529  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
4530  * @vsi: the VSI being configured
4531  *
4532  * This function maps descriptor rings to the queue-specific vectors
4533  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
4534  * one vector per queue pair, but on a constrained vector budget, we
4535  * group the queue pairs as "efficiently" as possible.
4536  **/
4537 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
4538 {
4539         int qp_remaining = vsi->num_queue_pairs;
4540         int q_vectors = vsi->num_q_vectors;
4541         int num_ringpairs;
4542         int v_start = 0;
4543         int qp_idx = 0;
4544
4545         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
4546          * group them so there are multiple queues per vector.
4547          * It is also important to go through all the vectors available to be
4548          * sure that if we don't use all the vectors, that the remaining vectors
4549          * are cleared. This is especially important when decreasing the
4550          * number of queues in use.
4551          */
4552         for (; v_start < q_vectors; v_start++) {
4553                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
4554
4555                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
4556
4557                 q_vector->num_ringpairs = num_ringpairs;
4558                 q_vector->reg_idx = q_vector->v_idx + vsi->base_vector - 1;
4559
4560                 q_vector->rx.count = 0;
4561                 q_vector->tx.count = 0;
4562                 q_vector->rx.ring = NULL;
4563                 q_vector->tx.ring = NULL;
4564
4565                 while (num_ringpairs--) {
4566                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
4567                         qp_idx++;
4568                         qp_remaining--;
4569                 }
4570         }
4571 }
4572
4573 /**
4574  * i40e_vsi_request_irq - Request IRQ from the OS
4575  * @vsi: the VSI being configured
4576  * @basename: name for the vector
4577  **/
4578 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
4579 {
4580         struct i40e_pf *pf = vsi->back;
4581         int err;
4582
4583         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4584                 err = i40e_vsi_request_irq_msix(vsi, basename);
4585         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
4586                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
4587                                   pf->int_name, pf);
4588         else
4589                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
4590                                   pf->int_name, pf);
4591
4592         if (err)
4593                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
4594
4595         return err;
4596 }
4597
4598 #ifdef CONFIG_NET_POLL_CONTROLLER
4599 /**
4600  * i40e_netpoll - A Polling 'interrupt' handler
4601  * @netdev: network interface device structure
4602  *
4603  * This is used by netconsole to send skbs without having to re-enable
4604  * interrupts.  It's not called while the normal interrupt routine is executing.
4605  **/
4606 static void i40e_netpoll(struct net_device *netdev)
4607 {
4608         struct i40e_netdev_priv *np = netdev_priv(netdev);
4609         struct i40e_vsi *vsi = np->vsi;
4610         struct i40e_pf *pf = vsi->back;
4611         int i;
4612
4613         /* if interface is down do nothing */
4614         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4615                 return;
4616
4617         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4618                 for (i = 0; i < vsi->num_q_vectors; i++)
4619                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4620         } else {
4621                 i40e_intr(pf->pdev->irq, netdev);
4622         }
4623 }
4624 #endif
4625
4626 #define I40E_QTX_ENA_WAIT_COUNT 50
4627
4628 /**
4629  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4630  * @pf: the PF being configured
4631  * @pf_q: the PF queue
4632  * @enable: enable or disable state of the queue
4633  *
4634  * This routine will wait for the given Tx queue of the PF to reach the
4635  * enabled or disabled state.
4636  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4637  * multiple retries; else will return 0 in case of success.
4638  **/
4639 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4640 {
4641         int i;
4642         u32 tx_reg;
4643
4644         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4645                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4646                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4647                         break;
4648
4649                 usleep_range(10, 20);
4650         }
4651         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4652                 return -ETIMEDOUT;
4653
4654         return 0;
4655 }
4656
4657 /**
4658  * i40e_control_tx_q - Start or stop a particular Tx queue
4659  * @pf: the PF structure
4660  * @pf_q: the PF queue to configure
4661  * @enable: start or stop the queue
4662  *
4663  * This function enables or disables a single queue. Note that any delay
4664  * required after the operation is expected to be handled by the caller of
4665  * this function.
4666  **/
4667 static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
4668 {
4669         struct i40e_hw *hw = &pf->hw;
4670         u32 tx_reg;
4671         int i;
4672
4673         /* warn the TX unit of coming changes */
4674         i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4675         if (!enable)
4676                 usleep_range(10, 20);
4677
4678         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4679                 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4680                 if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4681                     ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4682                         break;
4683                 usleep_range(1000, 2000);
4684         }
4685
4686         /* Skip if the queue is already in the requested state */
4687         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4688                 return;
4689
4690         /* turn on/off the queue */
4691         if (enable) {
4692                 wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4693                 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4694         } else {
4695                 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4696         }
4697
4698         wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4699 }
4700
4701 /**
4702  * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
4703  * @seid: VSI SEID
4704  * @pf: the PF structure
4705  * @pf_q: the PF queue to configure
4706  * @is_xdp: true if the queue is used for XDP
4707  * @enable: start or stop the queue
4708  **/
4709 int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
4710                            bool is_xdp, bool enable)
4711 {
4712         int ret;
4713
4714         i40e_control_tx_q(pf, pf_q, enable);
4715
4716         /* wait for the change to finish */
4717         ret = i40e_pf_txq_wait(pf, pf_q, enable);
4718         if (ret) {
4719                 dev_info(&pf->pdev->dev,
4720                          "VSI seid %d %sTx ring %d %sable timeout\n",
4721                          seid, (is_xdp ? "XDP " : ""), pf_q,
4722                          (enable ? "en" : "dis"));
4723         }
4724
4725         return ret;
4726 }
4727
4728 /**
4729  * i40e_vsi_enable_tx - Start a VSI's rings
4730  * @vsi: the VSI being configured
4731  **/
4732 static int i40e_vsi_enable_tx(struct i40e_vsi *vsi)
4733 {
4734         struct i40e_pf *pf = vsi->back;
4735         int i, pf_q, ret = 0;
4736
4737         pf_q = vsi->base_queue;
4738         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4739                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4740                                              pf_q,
4741                                              false /*is xdp*/, true);
4742                 if (ret)
4743                         break;
4744
4745                 if (!i40e_enabled_xdp_vsi(vsi))
4746                         continue;
4747
4748                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4749                                              pf_q + vsi->alloc_queue_pairs,
4750                                              true /*is xdp*/, true);
4751                 if (ret)
4752                         break;
4753         }
4754         return ret;
4755 }
4756
4757 /**
4758  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4759  * @pf: the PF being configured
4760  * @pf_q: the PF queue
4761  * @enable: enable or disable state of the queue
4762  *
4763  * This routine will wait for the given Rx queue of the PF to reach the
4764  * enabled or disabled state.
4765  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4766  * multiple retries; else will return 0 in case of success.
4767  **/
4768 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4769 {
4770         int i;
4771         u32 rx_reg;
4772
4773         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4774                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4775                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4776                         break;
4777
4778                 usleep_range(10, 20);
4779         }
4780         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4781                 return -ETIMEDOUT;
4782
4783         return 0;
4784 }
4785
4786 /**
4787  * i40e_control_rx_q - Start or stop a particular Rx queue
4788  * @pf: the PF structure
4789  * @pf_q: the PF queue to configure
4790  * @enable: start or stop the queue
4791  *
4792  * This function enables or disables a single queue. Note that
4793  * any delay required after the operation is expected to be
4794  * handled by the caller of this function.
4795  **/
4796 static void i40e_control_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4797 {
4798         struct i40e_hw *hw = &pf->hw;
4799         u32 rx_reg;
4800         int i;
4801
4802         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4803                 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4804                 if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4805                     ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4806                         break;
4807                 usleep_range(1000, 2000);
4808         }
4809
4810         /* Skip if the queue is already in the requested state */
4811         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4812                 return;
4813
4814         /* turn on/off the queue */
4815         if (enable)
4816                 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4817         else
4818                 rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4819
4820         wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4821 }
4822
4823 /**
4824  * i40e_control_wait_rx_q
4825  * @pf: the PF structure
4826  * @pf_q: queue being configured
4827  * @enable: start or stop the rings
4828  *
4829  * This function enables or disables a single queue along with waiting
4830  * for the change to finish. The caller of this function should handle
4831  * the delays needed in the case of disabling queues.
4832  **/
4833 int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4834 {
4835         int ret = 0;
4836
4837         i40e_control_rx_q(pf, pf_q, enable);
4838
4839         /* wait for the change to finish */
4840         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4841         if (ret)
4842                 return ret;
4843
4844         return ret;
4845 }
4846
4847 /**
4848  * i40e_vsi_enable_rx - Start a VSI's rings
4849  * @vsi: the VSI being configured
4850  **/
4851 static int i40e_vsi_enable_rx(struct i40e_vsi *vsi)
4852 {
4853         struct i40e_pf *pf = vsi->back;
4854         int i, pf_q, ret = 0;
4855
4856         pf_q = vsi->base_queue;
4857         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4858                 ret = i40e_control_wait_rx_q(pf, pf_q, true);
4859                 if (ret) {
4860                         dev_info(&pf->pdev->dev,
4861                                  "VSI seid %d Rx ring %d enable timeout\n",
4862                                  vsi->seid, pf_q);
4863                         break;
4864                 }
4865         }
4866
4867         return ret;
4868 }
4869
4870 /**
4871  * i40e_vsi_start_rings - Start a VSI's rings
4872  * @vsi: the VSI being configured
4873  **/
4874 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4875 {
4876         int ret = 0;
4877
4878         /* do rx first for enable and last for disable */
4879         ret = i40e_vsi_enable_rx(vsi);
4880         if (ret)
4881                 return ret;
4882         ret = i40e_vsi_enable_tx(vsi);
4883
4884         return ret;
4885 }
4886
4887 #define I40E_DISABLE_TX_GAP_MSEC        50
4888
4889 /**
4890  * i40e_vsi_stop_rings - Stop a VSI's rings
4891  * @vsi: the VSI being configured
4892  **/
4893 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4894 {
4895         struct i40e_pf *pf = vsi->back;
4896         int pf_q, err, q_end;
4897
4898         /* When port TX is suspended, don't wait */
4899         if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
4900                 return i40e_vsi_stop_rings_no_wait(vsi);
4901
4902         q_end = vsi->base_queue + vsi->num_queue_pairs;
4903         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
4904                 i40e_pre_tx_queue_cfg(&pf->hw, (u32)pf_q, false);
4905
4906         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++) {
4907                 err = i40e_control_wait_rx_q(pf, pf_q, false);
4908                 if (err)
4909                         dev_info(&pf->pdev->dev,
4910                                  "VSI seid %d Rx ring %d disable timeout\n",
4911                                  vsi->seid, pf_q);
4912         }
4913
4914         msleep(I40E_DISABLE_TX_GAP_MSEC);
4915         pf_q = vsi->base_queue;
4916         for (pf_q = vsi->base_queue; pf_q < q_end; pf_q++)
4917                 wr32(&pf->hw, I40E_QTX_ENA(pf_q), 0);
4918
4919         i40e_vsi_wait_queues_disabled(vsi);
4920 }
4921
4922 /**
4923  * i40e_vsi_stop_rings_no_wait - Stop a VSI's rings and do not delay
4924  * @vsi: the VSI being shutdown
4925  *
4926  * This function stops all the rings for a VSI but does not delay to verify
4927  * that rings have been disabled. It is expected that the caller is shutting
4928  * down multiple VSIs at once and will delay together for all the VSIs after
4929  * initiating the shutdown. This is particularly useful for shutting down lots
4930  * of VFs together. Otherwise, a large delay can be incurred while configuring
4931  * each VSI in serial.
4932  **/
4933 void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
4934 {
4935         struct i40e_pf *pf = vsi->back;
4936         int i, pf_q;
4937
4938         pf_q = vsi->base_queue;
4939         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4940                 i40e_control_tx_q(pf, pf_q, false);
4941                 i40e_control_rx_q(pf, pf_q, false);
4942         }
4943 }
4944
4945 /**
4946  * i40e_vsi_free_irq - Free the irq association with the OS
4947  * @vsi: the VSI being configured
4948  **/
4949 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4950 {
4951         struct i40e_pf *pf = vsi->back;
4952         struct i40e_hw *hw = &pf->hw;
4953         int base = vsi->base_vector;
4954         u32 val, qp;
4955         int i;
4956
4957         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4958                 if (!vsi->q_vectors)
4959                         return;
4960
4961                 if (!vsi->irqs_ready)
4962                         return;
4963
4964                 vsi->irqs_ready = false;
4965                 for (i = 0; i < vsi->num_q_vectors; i++) {
4966                         int irq_num;
4967                         u16 vector;
4968
4969                         vector = i + base;
4970                         irq_num = pf->msix_entries[vector].vector;
4971
4972                         /* free only the irqs that were actually requested */
4973                         if (!vsi->q_vectors[i] ||
4974                             !vsi->q_vectors[i]->num_ringpairs)
4975                                 continue;
4976
4977                         /* clear the affinity notifier in the IRQ descriptor */
4978                         irq_set_affinity_notifier(irq_num, NULL);
4979                         /* remove our suggested affinity mask for this IRQ */
4980                         irq_update_affinity_hint(irq_num, NULL);
4981                         free_irq(irq_num, vsi->q_vectors[i]);
4982
4983                         /* Tear down the interrupt queue link list
4984                          *
4985                          * We know that they come in pairs and always
4986                          * the Rx first, then the Tx.  To clear the
4987                          * link list, stick the EOL value into the
4988                          * next_q field of the registers.
4989                          */
4990                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4991                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4992                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4993                         val |= I40E_QUEUE_END_OF_LIST
4994                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4995                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4996
4997                         while (qp != I40E_QUEUE_END_OF_LIST) {
4998                                 u32 next;
4999
5000                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
5001
5002                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
5003                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
5004                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
5005                                          I40E_QINT_RQCTL_INTEVENT_MASK);
5006
5007                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
5008                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
5009
5010                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
5011
5012                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
5013
5014                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
5015                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
5016
5017                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
5018                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
5019                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
5020                                          I40E_QINT_TQCTL_INTEVENT_MASK);
5021
5022                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
5023                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
5024
5025                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
5026                                 qp = next;
5027                         }
5028                 }
5029         } else {
5030                 free_irq(pf->pdev->irq, pf);
5031
5032                 val = rd32(hw, I40E_PFINT_LNKLST0);
5033                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
5034                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
5035                 val |= I40E_QUEUE_END_OF_LIST
5036                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
5037                 wr32(hw, I40E_PFINT_LNKLST0, val);
5038
5039                 val = rd32(hw, I40E_QINT_RQCTL(qp));
5040                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
5041                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
5042                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
5043                          I40E_QINT_RQCTL_INTEVENT_MASK);
5044
5045                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
5046                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
5047
5048                 wr32(hw, I40E_QINT_RQCTL(qp), val);
5049
5050                 val = rd32(hw, I40E_QINT_TQCTL(qp));
5051
5052                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
5053                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
5054                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
5055                          I40E_QINT_TQCTL_INTEVENT_MASK);
5056
5057                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
5058                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
5059
5060                 wr32(hw, I40E_QINT_TQCTL(qp), val);
5061         }
5062 }
5063
5064 /**
5065  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
5066  * @vsi: the VSI being configured
5067  * @v_idx: Index of vector to be freed
5068  *
5069  * This function frees the memory allocated to the q_vector.  In addition if
5070  * NAPI is enabled it will delete any references to the NAPI struct prior
5071  * to freeing the q_vector.
5072  **/
5073 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
5074 {
5075         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
5076         struct i40e_ring *ring;
5077
5078         if (!q_vector)
5079                 return;
5080
5081         /* disassociate q_vector from rings */
5082         i40e_for_each_ring(ring, q_vector->tx)
5083                 ring->q_vector = NULL;
5084
5085         i40e_for_each_ring(ring, q_vector->rx)
5086                 ring->q_vector = NULL;
5087
5088         /* only VSI w/ an associated netdev is set up w/ NAPI */
5089         if (vsi->netdev)
5090                 netif_napi_del(&q_vector->napi);
5091
5092         vsi->q_vectors[v_idx] = NULL;
5093
5094         kfree_rcu(q_vector, rcu);
5095 }
5096
5097 /**
5098  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
5099  * @vsi: the VSI being un-configured
5100  *
5101  * This frees the memory allocated to the q_vectors and
5102  * deletes references to the NAPI struct.
5103  **/
5104 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
5105 {
5106         int v_idx;
5107
5108         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
5109                 i40e_free_q_vector(vsi, v_idx);
5110 }
5111
5112 /**
5113  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
5114  * @pf: board private structure
5115  **/
5116 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
5117 {
5118         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
5119         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
5120                 pci_disable_msix(pf->pdev);
5121                 kfree(pf->msix_entries);
5122                 pf->msix_entries = NULL;
5123                 kfree(pf->irq_pile);
5124                 pf->irq_pile = NULL;
5125         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
5126                 pci_disable_msi(pf->pdev);
5127         }
5128         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
5129 }
5130
5131 /**
5132  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
5133  * @pf: board private structure
5134  *
5135  * We go through and clear interrupt specific resources and reset the structure
5136  * to pre-load conditions
5137  **/
5138 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
5139 {
5140         int i;
5141
5142         if (test_bit(__I40E_MISC_IRQ_REQUESTED, pf->state))
5143                 i40e_free_misc_vector(pf);
5144
5145         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
5146                       I40E_IWARP_IRQ_PILE_ID);
5147
5148         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
5149         for (i = 0; i < pf->num_alloc_vsi; i++)
5150                 if (pf->vsi[i])
5151                         i40e_vsi_free_q_vectors(pf->vsi[i]);
5152         i40e_reset_interrupt_capability(pf);
5153 }
5154
5155 /**
5156  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
5157  * @vsi: the VSI being configured
5158  **/
5159 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
5160 {
5161         int q_idx;
5162
5163         if (!vsi->netdev)
5164                 return;
5165
5166         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
5167                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
5168
5169                 if (q_vector->rx.ring || q_vector->tx.ring)
5170                         napi_enable(&q_vector->napi);
5171         }
5172 }
5173
5174 /**
5175  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
5176  * @vsi: the VSI being configured
5177  **/
5178 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
5179 {
5180         int q_idx;
5181
5182         if (!vsi->netdev)
5183                 return;
5184
5185         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
5186                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
5187
5188                 if (q_vector->rx.ring || q_vector->tx.ring)
5189                         napi_disable(&q_vector->napi);
5190         }
5191 }
5192
5193 /**
5194  * i40e_vsi_close - Shut down a VSI
5195  * @vsi: the vsi to be quelled
5196  **/
5197 static void i40e_vsi_close(struct i40e_vsi *vsi)
5198 {
5199         struct i40e_pf *pf = vsi->back;
5200         if (!test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
5201                 i40e_down(vsi);
5202         i40e_vsi_free_irq(vsi);
5203         i40e_vsi_free_tx_resources(vsi);
5204         i40e_vsi_free_rx_resources(vsi);
5205         vsi->current_netdev_flags = 0;
5206         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
5207         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
5208                 set_bit(__I40E_CLIENT_RESET, pf->state);
5209 }
5210
5211 /**
5212  * i40e_quiesce_vsi - Pause a given VSI
5213  * @vsi: the VSI being paused
5214  **/
5215 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
5216 {
5217         if (test_bit(__I40E_VSI_DOWN, vsi->state))
5218                 return;
5219
5220         set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
5221         if (vsi->netdev && netif_running(vsi->netdev))
5222                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
5223         else
5224                 i40e_vsi_close(vsi);
5225 }
5226
5227 /**
5228  * i40e_unquiesce_vsi - Resume a given VSI
5229  * @vsi: the VSI being resumed
5230  **/
5231 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
5232 {
5233         if (!test_and_clear_bit(__I40E_VSI_NEEDS_RESTART, vsi->state))
5234                 return;
5235
5236         if (vsi->netdev && netif_running(vsi->netdev))
5237                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
5238         else
5239                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
5240 }
5241
5242 /**
5243  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
5244  * @pf: the PF
5245  **/
5246 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
5247 {
5248         int v;
5249
5250         for (v = 0; v < pf->num_alloc_vsi; v++) {
5251                 if (pf->vsi[v])
5252                         i40e_quiesce_vsi(pf->vsi[v]);
5253         }
5254 }
5255
5256 /**
5257  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
5258  * @pf: the PF
5259  **/
5260 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
5261 {
5262         int v;
5263
5264         for (v = 0; v < pf->num_alloc_vsi; v++) {
5265                 if (pf->vsi[v])
5266                         i40e_unquiesce_vsi(pf->vsi[v]);
5267         }
5268 }
5269
5270 /**
5271  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
5272  * @vsi: the VSI being configured
5273  *
5274  * Wait until all queues on a given VSI have been disabled.
5275  **/
5276 int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
5277 {
5278         struct i40e_pf *pf = vsi->back;
5279         int i, pf_q, ret;
5280
5281         pf_q = vsi->base_queue;
5282         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
5283                 /* Check and wait for the Tx queue */
5284                 ret = i40e_pf_txq_wait(pf, pf_q, false);
5285                 if (ret) {
5286                         dev_info(&pf->pdev->dev,
5287                                  "VSI seid %d Tx ring %d disable timeout\n",
5288                                  vsi->seid, pf_q);
5289                         return ret;
5290                 }
5291
5292                 if (!i40e_enabled_xdp_vsi(vsi))
5293                         goto wait_rx;
5294
5295                 /* Check and wait for the XDP Tx queue */
5296                 ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
5297                                        false);
5298                 if (ret) {
5299                         dev_info(&pf->pdev->dev,
5300                                  "VSI seid %d XDP Tx ring %d disable timeout\n",
5301                                  vsi->seid, pf_q);
5302                         return ret;
5303                 }
5304 wait_rx:
5305                 /* Check and wait for the Rx queue */
5306                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
5307                 if (ret) {
5308                         dev_info(&pf->pdev->dev,
5309                                  "VSI seid %d Rx ring %d disable timeout\n",
5310                                  vsi->seid, pf_q);
5311                         return ret;
5312                 }
5313         }
5314
5315         return 0;
5316 }
5317
5318 #ifdef CONFIG_I40E_DCB
5319 /**
5320  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
5321  * @pf: the PF
5322  *
5323  * This function waits for the queues to be in disabled state for all the
5324  * VSIs that are managed by this PF.
5325  **/
5326 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
5327 {
5328         int v, ret = 0;
5329
5330         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5331                 if (pf->vsi[v]) {
5332                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
5333                         if (ret)
5334                                 break;
5335                 }
5336         }
5337
5338         return ret;
5339 }
5340
5341 #endif
5342
5343 /**
5344  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
5345  * @pf: pointer to PF
5346  *
5347  * Get TC map for ISCSI PF type that will include iSCSI TC
5348  * and LAN TC.
5349  **/
5350 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
5351 {
5352         struct i40e_dcb_app_priority_table app;
5353         struct i40e_hw *hw = &pf->hw;
5354         u8 enabled_tc = 1; /* TC0 is always enabled */
5355         u8 tc, i;
5356         /* Get the iSCSI APP TLV */
5357         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5358
5359         for (i = 0; i < dcbcfg->numapps; i++) {
5360                 app = dcbcfg->app[i];
5361                 if (app.selector == I40E_APP_SEL_TCPIP &&
5362                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
5363                         tc = dcbcfg->etscfg.prioritytable[app.priority];
5364                         enabled_tc |= BIT(tc);
5365                         break;
5366                 }
5367         }
5368
5369         return enabled_tc;
5370 }
5371
5372 /**
5373  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
5374  * @dcbcfg: the corresponding DCBx configuration structure
5375  *
5376  * Return the number of TCs from given DCBx configuration
5377  **/
5378 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
5379 {
5380         int i, tc_unused = 0;
5381         u8 num_tc = 0;
5382         u8 ret = 0;
5383
5384         /* Scan the ETS Config Priority Table to find
5385          * traffic class enabled for a given priority
5386          * and create a bitmask of enabled TCs
5387          */
5388         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
5389                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
5390
5391         /* Now scan the bitmask to check for
5392          * contiguous TCs starting with TC0
5393          */
5394         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5395                 if (num_tc & BIT(i)) {
5396                         if (!tc_unused) {
5397                                 ret++;
5398                         } else {
5399                                 pr_err("Non-contiguous TC - Disabling DCB\n");
5400                                 return 1;
5401                         }
5402                 } else {
5403                         tc_unused = 1;
5404                 }
5405         }
5406
5407         /* There is always at least TC0 */
5408         if (!ret)
5409                 ret = 1;
5410
5411         return ret;
5412 }
5413
5414 /**
5415  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
5416  * @dcbcfg: the corresponding DCBx configuration structure
5417  *
5418  * Query the current DCB configuration and return the number of
5419  * traffic classes enabled from the given DCBX config
5420  **/
5421 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
5422 {
5423         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
5424         u8 enabled_tc = 1;
5425         u8 i;
5426
5427         for (i = 0; i < num_tc; i++)
5428                 enabled_tc |= BIT(i);
5429
5430         return enabled_tc;
5431 }
5432
5433 /**
5434  * i40e_mqprio_get_enabled_tc - Get enabled traffic classes
5435  * @pf: PF being queried
5436  *
5437  * Query the current MQPRIO configuration and return the number of
5438  * traffic classes enabled.
5439  **/
5440 static u8 i40e_mqprio_get_enabled_tc(struct i40e_pf *pf)
5441 {
5442         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5443         u8 num_tc = vsi->mqprio_qopt.qopt.num_tc;
5444         u8 enabled_tc = 1, i;
5445
5446         for (i = 1; i < num_tc; i++)
5447                 enabled_tc |= BIT(i);
5448         return enabled_tc;
5449 }
5450
5451 /**
5452  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
5453  * @pf: PF being queried
5454  *
5455  * Return number of traffic classes enabled for the given PF
5456  **/
5457 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
5458 {
5459         struct i40e_hw *hw = &pf->hw;
5460         u8 i, enabled_tc = 1;
5461         u8 num_tc = 0;
5462         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5463
5464         if (i40e_is_tc_mqprio_enabled(pf))
5465                 return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;
5466
5467         /* If neither MQPRIO nor DCB is enabled, then always use single TC */
5468         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5469                 return 1;
5470
5471         /* SFP mode will be enabled for all TCs on port */
5472         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5473                 return i40e_dcb_get_num_tc(dcbcfg);
5474
5475         /* MFP mode return count of enabled TCs for this PF */
5476         if (pf->hw.func_caps.iscsi)
5477                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
5478         else
5479                 return 1; /* Only TC0 */
5480
5481         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5482                 if (enabled_tc & BIT(i))
5483                         num_tc++;
5484         }
5485         return num_tc;
5486 }
5487
5488 /**
5489  * i40e_pf_get_tc_map - Get bitmap for enabled traffic classes
5490  * @pf: PF being queried
5491  *
5492  * Return a bitmap for enabled traffic classes for this PF.
5493  **/
5494 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
5495 {
5496         if (i40e_is_tc_mqprio_enabled(pf))
5497                 return i40e_mqprio_get_enabled_tc(pf);
5498
5499         /* If neither MQPRIO nor DCB is enabled for this PF then just return
5500          * default TC
5501          */
5502         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5503                 return I40E_DEFAULT_TRAFFIC_CLASS;
5504
5505         /* SFP mode we want PF to be enabled for all TCs */
5506         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5507                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
5508
5509         /* MFP enabled and iSCSI PF type */
5510         if (pf->hw.func_caps.iscsi)
5511                 return i40e_get_iscsi_tc_map(pf);
5512         else
5513                 return I40E_DEFAULT_TRAFFIC_CLASS;
5514 }
5515
5516 /**
5517  * i40e_vsi_get_bw_info - Query VSI BW Information
5518  * @vsi: the VSI being queried
5519  *
5520  * Returns 0 on success, negative value on failure
5521  **/
5522 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
5523 {
5524         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
5525         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5526         struct i40e_pf *pf = vsi->back;
5527         struct i40e_hw *hw = &pf->hw;
5528         i40e_status ret;
5529         u32 tc_bw_max;
5530         int i;
5531
5532         /* Get the VSI level BW configuration */
5533         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
5534         if (ret) {
5535                 dev_info(&pf->pdev->dev,
5536                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
5537                          i40e_stat_str(&pf->hw, ret),
5538                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5539                 return -EINVAL;
5540         }
5541
5542         /* Get the VSI level BW configuration per TC */
5543         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
5544                                                NULL);
5545         if (ret) {
5546                 dev_info(&pf->pdev->dev,
5547                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
5548                          i40e_stat_str(&pf->hw, ret),
5549                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5550                 return -EINVAL;
5551         }
5552
5553         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
5554                 dev_info(&pf->pdev->dev,
5555                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
5556                          bw_config.tc_valid_bits,
5557                          bw_ets_config.tc_valid_bits);
5558                 /* Still continuing */
5559         }
5560
5561         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
5562         vsi->bw_max_quanta = bw_config.max_bw;
5563         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
5564                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
5565         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5566                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
5567                 vsi->bw_ets_limit_credits[i] =
5568                                         le16_to_cpu(bw_ets_config.credits[i]);
5569                 /* 3 bits out of 4 for each TC */
5570                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
5571         }
5572
5573         return 0;
5574 }
5575
5576 /**
5577  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
5578  * @vsi: the VSI being configured
5579  * @enabled_tc: TC bitmap
5580  * @bw_share: BW shared credits per TC
5581  *
5582  * Returns 0 on success, negative value on failure
5583  **/
5584 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
5585                                        u8 *bw_share)
5586 {
5587         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5588         struct i40e_pf *pf = vsi->back;
5589         i40e_status ret;
5590         int i;
5591
5592         /* There is no need to reset BW when mqprio mode is on.  */
5593         if (i40e_is_tc_mqprio_enabled(pf))
5594                 return 0;
5595         if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5596                 ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
5597                 if (ret)
5598                         dev_info(&pf->pdev->dev,
5599                                  "Failed to reset tx rate for vsi->seid %u\n",
5600                                  vsi->seid);
5601                 return ret;
5602         }
5603         memset(&bw_data, 0, sizeof(bw_data));
5604         bw_data.tc_valid_bits = enabled_tc;
5605         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5606                 bw_data.tc_bw_credits[i] = bw_share[i];
5607
5608         ret = i40e_aq_config_vsi_tc_bw(&pf->hw, vsi->seid, &bw_data, NULL);
5609         if (ret) {
5610                 dev_info(&pf->pdev->dev,
5611                          "AQ command Config VSI BW allocation per TC failed = %d\n",
5612                          pf->hw.aq.asq_last_status);
5613                 return -EINVAL;
5614         }
5615
5616         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5617                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
5618
5619         return 0;
5620 }
5621
5622 /**
5623  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
5624  * @vsi: the VSI being configured
5625  * @enabled_tc: TC map to be enabled
5626  *
5627  **/
5628 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5629 {
5630         struct net_device *netdev = vsi->netdev;
5631         struct i40e_pf *pf = vsi->back;
5632         struct i40e_hw *hw = &pf->hw;
5633         u8 netdev_tc = 0;
5634         int i;
5635         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5636
5637         if (!netdev)
5638                 return;
5639
5640         if (!enabled_tc) {
5641                 netdev_reset_tc(netdev);
5642                 return;
5643         }
5644
5645         /* Set up actual enabled TCs on the VSI */
5646         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5647                 return;
5648
5649         /* set per TC queues for the VSI */
5650         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5651                 /* Only set TC queues for enabled tcs
5652                  *
5653                  * e.g. For a VSI that has TC0 and TC3 enabled the
5654                  * enabled_tc bitmap would be 0x00001001; the driver
5655                  * will set the numtc for netdev as 2 that will be
5656                  * referenced by the netdev layer as TC 0 and 1.
5657                  */
5658                 if (vsi->tc_config.enabled_tc & BIT(i))
5659                         netdev_set_tc_queue(netdev,
5660                                         vsi->tc_config.tc_info[i].netdev_tc,
5661                                         vsi->tc_config.tc_info[i].qcount,
5662                                         vsi->tc_config.tc_info[i].qoffset);
5663         }
5664
5665         if (i40e_is_tc_mqprio_enabled(pf))
5666                 return;
5667
5668         /* Assign UP2TC map for the VSI */
5669         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5670                 /* Get the actual TC# for the UP */
5671                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5672                 /* Get the mapped netdev TC# for the UP */
5673                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5674                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5675         }
5676 }
5677
5678 /**
5679  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5680  * @vsi: the VSI being configured
5681  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5682  **/
5683 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5684                                       struct i40e_vsi_context *ctxt)
5685 {
5686         /* copy just the sections touched not the entire info
5687          * since not all sections are valid as returned by
5688          * update vsi params
5689          */
5690         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5691         memcpy(&vsi->info.queue_mapping,
5692                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5693         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5694                sizeof(vsi->info.tc_mapping));
5695 }
5696
5697 /**
5698  * i40e_update_adq_vsi_queues - update queue mapping for ADq VSI
5699  * @vsi: the VSI being reconfigured
5700  * @vsi_offset: offset from main VF VSI
5701  */
5702 int i40e_update_adq_vsi_queues(struct i40e_vsi *vsi, int vsi_offset)
5703 {
5704         struct i40e_vsi_context ctxt = {};
5705         struct i40e_pf *pf;
5706         struct i40e_hw *hw;
5707         int ret;
5708
5709         if (!vsi)
5710                 return I40E_ERR_PARAM;
5711         pf = vsi->back;
5712         hw = &pf->hw;
5713
5714         ctxt.seid = vsi->seid;
5715         ctxt.pf_num = hw->pf_id;
5716         ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id + vsi_offset;
5717         ctxt.uplink_seid = vsi->uplink_seid;
5718         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
5719         ctxt.flags = I40E_AQ_VSI_TYPE_VF;
5720         ctxt.info = vsi->info;
5721
5722         i40e_vsi_setup_queue_map(vsi, &ctxt, vsi->tc_config.enabled_tc,
5723                                  false);
5724         if (vsi->reconfig_rss) {
5725                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
5726                                       vsi->num_queue_pairs);
5727                 ret = i40e_vsi_config_rss(vsi);
5728                 if (ret) {
5729                         dev_info(&pf->pdev->dev, "Failed to reconfig rss for num_queues\n");
5730                         return ret;
5731                 }
5732                 vsi->reconfig_rss = false;
5733         }
5734
5735         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5736         if (ret) {
5737                 dev_info(&pf->pdev->dev, "Update vsi config failed, err %s aq_err %s\n",
5738                          i40e_stat_str(hw, ret),
5739                          i40e_aq_str(hw, hw->aq.asq_last_status));
5740                 return ret;
5741         }
5742         /* update the local VSI info with updated queue map */
5743         i40e_vsi_update_queue_map(vsi, &ctxt);
5744         vsi->info.valid_sections = 0;
5745
5746         return ret;
5747 }
5748
5749 /**
5750  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5751  * @vsi: VSI to be configured
5752  * @enabled_tc: TC bitmap
5753  *
5754  * This configures a particular VSI for TCs that are mapped to the
5755  * given TC bitmap. It uses default bandwidth share for TCs across
5756  * VSIs to configure TC for a particular VSI.
5757  *
5758  * NOTE:
5759  * It is expected that the VSI queues have been quisced before calling
5760  * this function.
5761  **/
5762 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5763 {
5764         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5765         struct i40e_pf *pf = vsi->back;
5766         struct i40e_hw *hw = &pf->hw;
5767         struct i40e_vsi_context ctxt;
5768         int ret = 0;
5769         int i;
5770
5771         /* Check if enabled_tc is same as existing or new TCs */
5772         if (vsi->tc_config.enabled_tc == enabled_tc &&
5773             vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
5774                 return ret;
5775
5776         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5777         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5778                 if (enabled_tc & BIT(i))
5779                         bw_share[i] = 1;
5780         }
5781
5782         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5783         if (ret) {
5784                 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5785
5786                 dev_info(&pf->pdev->dev,
5787                          "Failed configuring TC map %d for VSI %d\n",
5788                          enabled_tc, vsi->seid);
5789                 ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
5790                                                   &bw_config, NULL);
5791                 if (ret) {
5792                         dev_info(&pf->pdev->dev,
5793                                  "Failed querying vsi bw info, err %s aq_err %s\n",
5794                                  i40e_stat_str(hw, ret),
5795                                  i40e_aq_str(hw, hw->aq.asq_last_status));
5796                         goto out;
5797                 }
5798                 if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
5799                         u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;
5800
5801                         if (!valid_tc)
5802                                 valid_tc = bw_config.tc_valid_bits;
5803                         /* Always enable TC0, no matter what */
5804                         valid_tc |= 1;
5805                         dev_info(&pf->pdev->dev,
5806                                  "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
5807                                  enabled_tc, bw_config.tc_valid_bits, valid_tc);
5808                         enabled_tc = valid_tc;
5809                 }
5810
5811                 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5812                 if (ret) {
5813                         dev_err(&pf->pdev->dev,
5814                                 "Unable to  configure TC map %d for VSI %d\n",
5815                                 enabled_tc, vsi->seid);
5816                         goto out;
5817                 }
5818         }
5819
5820         /* Update Queue Pairs Mapping for currently enabled UPs */
5821         ctxt.seid = vsi->seid;
5822         ctxt.pf_num = vsi->back->hw.pf_id;
5823         ctxt.vf_num = 0;
5824         ctxt.uplink_seid = vsi->uplink_seid;
5825         ctxt.info = vsi->info;
5826         if (i40e_is_tc_mqprio_enabled(pf)) {
5827                 ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
5828                 if (ret)
5829                         goto out;
5830         } else {
5831                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5832         }
5833
5834         /* On destroying the qdisc, reset vsi->rss_size, as number of enabled
5835          * queues changed.
5836          */
5837         if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
5838                 vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
5839                                       vsi->num_queue_pairs);
5840                 ret = i40e_vsi_config_rss(vsi);
5841                 if (ret) {
5842                         dev_info(&vsi->back->pdev->dev,
5843                                  "Failed to reconfig rss for num_queues\n");
5844                         return ret;
5845                 }
5846                 vsi->reconfig_rss = false;
5847         }
5848         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5849                 ctxt.info.valid_sections |=
5850                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5851                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5852         }
5853
5854         /* Update the VSI after updating the VSI queue-mapping
5855          * information
5856          */
5857         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5858         if (ret) {
5859                 dev_info(&pf->pdev->dev,
5860                          "Update vsi tc config failed, err %s aq_err %s\n",
5861                          i40e_stat_str(hw, ret),
5862                          i40e_aq_str(hw, hw->aq.asq_last_status));
5863                 goto out;
5864         }
5865         /* update the local VSI info with updated queue map */
5866         i40e_vsi_update_queue_map(vsi, &ctxt);
5867         vsi->info.valid_sections = 0;
5868
5869         /* Update current VSI BW information */
5870         ret = i40e_vsi_get_bw_info(vsi);
5871         if (ret) {
5872                 dev_info(&pf->pdev->dev,
5873                          "Failed updating vsi bw info, err %s aq_err %s\n",
5874                          i40e_stat_str(hw, ret),
5875                          i40e_aq_str(hw, hw->aq.asq_last_status));
5876                 goto out;
5877         }
5878
5879         /* Update the netdev TC setup */
5880         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5881 out:
5882         return ret;
5883 }
5884
5885 /**
5886  * i40e_get_link_speed - Returns link speed for the interface
5887  * @vsi: VSI to be configured
5888  *
5889  **/
5890 static int i40e_get_link_speed(struct i40e_vsi *vsi)
5891 {
5892         struct i40e_pf *pf = vsi->back;
5893
5894         switch (pf->hw.phy.link_info.link_speed) {
5895         case I40E_LINK_SPEED_40GB:
5896                 return 40000;
5897         case I40E_LINK_SPEED_25GB:
5898                 return 25000;
5899         case I40E_LINK_SPEED_20GB:
5900                 return 20000;
5901         case I40E_LINK_SPEED_10GB:
5902                 return 10000;
5903         case I40E_LINK_SPEED_1GB:
5904                 return 1000;
5905         default:
5906                 return -EINVAL;
5907         }
5908 }
5909
5910 /**
5911  * i40e_bw_bytes_to_mbits - Convert max_tx_rate from bytes to mbits
5912  * @vsi: Pointer to vsi structure
5913  * @max_tx_rate: max TX rate in bytes to be converted into Mbits
5914  *
5915  * Helper function to convert units before send to set BW limit
5916  **/
5917 static u64 i40e_bw_bytes_to_mbits(struct i40e_vsi *vsi, u64 max_tx_rate)
5918 {
5919         if (max_tx_rate < I40E_BW_MBPS_DIVISOR) {
5920                 dev_warn(&vsi->back->pdev->dev,
5921                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5922                 max_tx_rate = I40E_BW_CREDIT_DIVISOR;
5923         } else {
5924                 do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
5925         }
5926
5927         return max_tx_rate;
5928 }
5929
5930 /**
5931  * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
5932  * @vsi: VSI to be configured
5933  * @seid: seid of the channel/VSI
5934  * @max_tx_rate: max TX rate to be configured as BW limit
5935  *
5936  * Helper function to set BW limit for a given VSI
5937  **/
5938 int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
5939 {
5940         struct i40e_pf *pf = vsi->back;
5941         u64 credits = 0;
5942         int speed = 0;
5943         int ret = 0;
5944
5945         speed = i40e_get_link_speed(vsi);
5946         if (max_tx_rate > speed) {
5947                 dev_err(&pf->pdev->dev,
5948                         "Invalid max tx rate %llu specified for VSI seid %d.",
5949                         max_tx_rate, seid);
5950                 return -EINVAL;
5951         }
5952         if (max_tx_rate && max_tx_rate < I40E_BW_CREDIT_DIVISOR) {
5953                 dev_warn(&pf->pdev->dev,
5954                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5955                 max_tx_rate = I40E_BW_CREDIT_DIVISOR;
5956         }
5957
5958         /* Tx rate credits are in values of 50Mbps, 0 is disabled */
5959         credits = max_tx_rate;
5960         do_div(credits, I40E_BW_CREDIT_DIVISOR);
5961         ret = i40e_aq_config_vsi_bw_limit(&pf->hw, seid, credits,
5962                                           I40E_MAX_BW_INACTIVE_ACCUM, NULL);
5963         if (ret)
5964                 dev_err(&pf->pdev->dev,
5965                         "Failed set tx rate (%llu Mbps) for vsi->seid %u, err %s aq_err %s\n",
5966                         max_tx_rate, seid, i40e_stat_str(&pf->hw, ret),
5967                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5968         return ret;
5969 }
5970
5971 /**
5972  * i40e_remove_queue_channels - Remove queue channels for the TCs
5973  * @vsi: VSI to be configured
5974  *
5975  * Remove queue channels for the TCs
5976  **/
5977 static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
5978 {
5979         enum i40e_admin_queue_err last_aq_status;
5980         struct i40e_cloud_filter *cfilter;
5981         struct i40e_channel *ch, *ch_tmp;
5982         struct i40e_pf *pf = vsi->back;
5983         struct hlist_node *node;
5984         int ret, i;
5985
5986         /* Reset rss size that was stored when reconfiguring rss for
5987          * channel VSIs with non-power-of-2 queue count.
5988          */
5989         vsi->current_rss_size = 0;
5990
5991         /* perform cleanup for channels if they exist */
5992         if (list_empty(&vsi->ch_list))
5993                 return;
5994
5995         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5996                 struct i40e_vsi *p_vsi;
5997
5998                 list_del(&ch->list);
5999                 p_vsi = ch->parent_vsi;
6000                 if (!p_vsi || !ch->initialized) {
6001                         kfree(ch);
6002                         continue;
6003                 }
6004                 /* Reset queue contexts */
6005                 for (i = 0; i < ch->num_queue_pairs; i++) {
6006                         struct i40e_ring *tx_ring, *rx_ring;
6007                         u16 pf_q;
6008
6009                         pf_q = ch->base_queue + i;
6010                         tx_ring = vsi->tx_rings[pf_q];
6011                         tx_ring->ch = NULL;
6012
6013                         rx_ring = vsi->rx_rings[pf_q];
6014                         rx_ring->ch = NULL;
6015                 }
6016
6017                 /* Reset BW configured for this VSI via mqprio */
6018                 ret = i40e_set_bw_limit(vsi, ch->seid, 0);
6019                 if (ret)
6020                         dev_info(&vsi->back->pdev->dev,
6021                                  "Failed to reset tx rate for ch->seid %u\n",
6022                                  ch->seid);
6023
6024                 /* delete cloud filters associated with this channel */
6025                 hlist_for_each_entry_safe(cfilter, node,
6026                                           &pf->cloud_filter_list, cloud_node) {
6027                         if (cfilter->seid != ch->seid)
6028                                 continue;
6029
6030                         hash_del(&cfilter->cloud_node);
6031                         if (cfilter->dst_port)
6032                                 ret = i40e_add_del_cloud_filter_big_buf(vsi,
6033                                                                         cfilter,
6034                                                                         false);
6035                         else
6036                                 ret = i40e_add_del_cloud_filter(vsi, cfilter,
6037                                                                 false);
6038                         last_aq_status = pf->hw.aq.asq_last_status;
6039                         if (ret)
6040                                 dev_info(&pf->pdev->dev,
6041                                          "Failed to delete cloud filter, err %s aq_err %s\n",
6042                                          i40e_stat_str(&pf->hw, ret),
6043                                          i40e_aq_str(&pf->hw, last_aq_status));
6044                         kfree(cfilter);
6045                 }
6046
6047                 /* delete VSI from FW */
6048                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
6049                                              NULL);
6050                 if (ret)
6051                         dev_err(&vsi->back->pdev->dev,
6052                                 "unable to remove channel (%d) for parent VSI(%d)\n",
6053                                 ch->seid, p_vsi->seid);
6054                 kfree(ch);
6055         }
6056         INIT_LIST_HEAD(&vsi->ch_list);
6057 }
6058
6059 /**
6060  * i40e_get_max_queues_for_channel
6061  * @vsi: ptr to VSI to which channels are associated with
6062  *
6063  * Helper function which returns max value among the queue counts set on the
6064  * channels/TCs created.
6065  **/
6066 static int i40e_get_max_queues_for_channel(struct i40e_vsi *vsi)
6067 {
6068         struct i40e_channel *ch, *ch_tmp;
6069         int max = 0;
6070
6071         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
6072                 if (!ch->initialized)
6073                         continue;
6074                 if (ch->num_queue_pairs > max)
6075                         max = ch->num_queue_pairs;
6076         }
6077
6078         return max;
6079 }
6080
6081 /**
6082  * i40e_validate_num_queues - validate num_queues w.r.t channel
6083  * @pf: ptr to PF device
6084  * @num_queues: number of queues
6085  * @vsi: the parent VSI
6086  * @reconfig_rss: indicates should the RSS be reconfigured or not
6087  *
6088  * This function validates number of queues in the context of new channel
6089  * which is being established and determines if RSS should be reconfigured
6090  * or not for parent VSI.
6091  **/
6092 static int i40e_validate_num_queues(struct i40e_pf *pf, int num_queues,
6093                                     struct i40e_vsi *vsi, bool *reconfig_rss)
6094 {
6095         int max_ch_queues;
6096
6097         if (!reconfig_rss)
6098                 return -EINVAL;
6099
6100         *reconfig_rss = false;
6101         if (vsi->current_rss_size) {
6102                 if (num_queues > vsi->current_rss_size) {
6103                         dev_dbg(&pf->pdev->dev,
6104                                 "Error: num_queues (%d) > vsi's current_size(%d)\n",
6105                                 num_queues, vsi->current_rss_size);
6106                         return -EINVAL;
6107                 } else if ((num_queues < vsi->current_rss_size) &&
6108                            (!is_power_of_2(num_queues))) {
6109                         dev_dbg(&pf->pdev->dev,
6110                                 "Error: num_queues (%d) < vsi's current_size(%d), but not power of 2\n",
6111                                 num_queues, vsi->current_rss_size);
6112                         return -EINVAL;
6113                 }
6114         }
6115
6116         if (!is_power_of_2(num_queues)) {
6117                 /* Find the max num_queues configured for channel if channel
6118                  * exist.
6119                  * if channel exist, then enforce 'num_queues' to be more than
6120                  * max ever queues configured for channel.
6121                  */
6122                 max_ch_queues = i40e_get_max_queues_for_channel(vsi);
6123                 if (num_queues < max_ch_queues) {
6124                         dev_dbg(&pf->pdev->dev,
6125                                 "Error: num_queues (%d) < max queues configured for channel(%d)\n",
6126                                 num_queues, max_ch_queues);
6127                         return -EINVAL;
6128                 }
6129                 *reconfig_rss = true;
6130         }
6131
6132         return 0;
6133 }
6134
6135 /**
6136  * i40e_vsi_reconfig_rss - reconfig RSS based on specified rss_size
6137  * @vsi: the VSI being setup
6138  * @rss_size: size of RSS, accordingly LUT gets reprogrammed
6139  *
6140  * This function reconfigures RSS by reprogramming LUTs using 'rss_size'
6141  **/
6142 static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
6143 {
6144         struct i40e_pf *pf = vsi->back;
6145         u8 seed[I40E_HKEY_ARRAY_SIZE];
6146         struct i40e_hw *hw = &pf->hw;
6147         int local_rss_size;
6148         u8 *lut;
6149         int ret;
6150
6151         if (!vsi->rss_size)
6152                 return -EINVAL;
6153
6154         if (rss_size > vsi->rss_size)
6155                 return -EINVAL;
6156
6157         local_rss_size = min_t(int, vsi->rss_size, rss_size);
6158         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
6159         if (!lut)
6160                 return -ENOMEM;
6161
6162         /* Ignoring user configured lut if there is one */
6163         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);
6164
6165         /* Use user configured hash key if there is one, otherwise
6166          * use default.
6167          */
6168         if (vsi->rss_hkey_user)
6169                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
6170         else
6171                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
6172
6173         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
6174         if (ret) {
6175                 dev_info(&pf->pdev->dev,
6176                          "Cannot set RSS lut, err %s aq_err %s\n",
6177                          i40e_stat_str(hw, ret),
6178                          i40e_aq_str(hw, hw->aq.asq_last_status));
6179                 kfree(lut);
6180                 return ret;
6181         }
6182         kfree(lut);
6183
6184         /* Do the update w.r.t. storing rss_size */
6185         if (!vsi->orig_rss_size)
6186                 vsi->orig_rss_size = vsi->rss_size;
6187         vsi->current_rss_size = local_rss_size;
6188
6189         return ret;
6190 }
6191
6192 /**
6193  * i40e_channel_setup_queue_map - Setup a channel queue map
6194  * @pf: ptr to PF device
6195  * @ctxt: VSI context structure
6196  * @ch: ptr to channel structure
6197  *
6198  * Setup queue map for a specific channel
6199  **/
6200 static void i40e_channel_setup_queue_map(struct i40e_pf *pf,
6201                                          struct i40e_vsi_context *ctxt,
6202                                          struct i40e_channel *ch)
6203 {
6204         u16 qcount, qmap, sections = 0;
6205         u8 offset = 0;
6206         int pow;
6207
6208         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
6209         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
6210
6211         qcount = min_t(int, ch->num_queue_pairs, pf->num_lan_msix);
6212         ch->num_queue_pairs = qcount;
6213
6214         /* find the next higher power-of-2 of num queue pairs */
6215         pow = ilog2(qcount);
6216         if (!is_power_of_2(qcount))
6217                 pow++;
6218
6219         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
6220                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
6221
6222         /* Setup queue TC[0].qmap for given VSI context */
6223         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
6224
6225         ctxt->info.up_enable_bits = 0x1; /* TC0 enabled */
6226         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
6227         ctxt->info.queue_mapping[0] = cpu_to_le16(ch->base_queue);
6228         ctxt->info.valid_sections |= cpu_to_le16(sections);
6229 }
6230
6231 /**
6232  * i40e_add_channel - add a channel by adding VSI
6233  * @pf: ptr to PF device
6234  * @uplink_seid: underlying HW switching element (VEB) ID
6235  * @ch: ptr to channel structure
6236  *
6237  * Add a channel (VSI) using add_vsi and queue_map
6238  **/
6239 static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
6240                             struct i40e_channel *ch)
6241 {
6242         struct i40e_hw *hw = &pf->hw;
6243         struct i40e_vsi_context ctxt;
6244         u8 enabled_tc = 0x1; /* TC0 enabled */
6245         int ret;
6246
6247         if (ch->type != I40E_VSI_VMDQ2) {
6248                 dev_info(&pf->pdev->dev,
6249                          "add new vsi failed, ch->type %d\n", ch->type);
6250                 return -EINVAL;
6251         }
6252
6253         memset(&ctxt, 0, sizeof(ctxt));
6254         ctxt.pf_num = hw->pf_id;
6255         ctxt.vf_num = 0;
6256         ctxt.uplink_seid = uplink_seid;
6257         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
6258         if (ch->type == I40E_VSI_VMDQ2)
6259                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
6260
6261         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
6262                 ctxt.info.valid_sections |=
6263                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6264                 ctxt.info.switch_id =
6265                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6266         }
6267
6268         /* Set queue map for a given VSI context */
6269         i40e_channel_setup_queue_map(pf, &ctxt, ch);
6270
6271         /* Now time to create VSI */
6272         ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
6273         if (ret) {
6274                 dev_info(&pf->pdev->dev,
6275                          "add new vsi failed, err %s aq_err %s\n",
6276                          i40e_stat_str(&pf->hw, ret),
6277                          i40e_aq_str(&pf->hw,
6278                                      pf->hw.aq.asq_last_status));
6279                 return -ENOENT;
6280         }
6281
6282         /* Success, update channel, set enabled_tc only if the channel
6283          * is not a macvlan
6284          */
6285         ch->enabled_tc = !i40e_is_channel_macvlan(ch) && enabled_tc;
6286         ch->seid = ctxt.seid;
6287         ch->vsi_number = ctxt.vsi_number;
6288         ch->stat_counter_idx = le16_to_cpu(ctxt.info.stat_counter_idx);
6289
6290         /* copy just the sections touched not the entire info
6291          * since not all sections are valid as returned by
6292          * update vsi params
6293          */
6294         ch->info.mapping_flags = ctxt.info.mapping_flags;
6295         memcpy(&ch->info.queue_mapping,
6296                &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
6297         memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
6298                sizeof(ctxt.info.tc_mapping));
6299
6300         return 0;
6301 }
6302
6303 static int i40e_channel_config_bw(struct i40e_vsi *vsi, struct i40e_channel *ch,
6304                                   u8 *bw_share)
6305 {
6306         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
6307         i40e_status ret;
6308         int i;
6309
6310         memset(&bw_data, 0, sizeof(bw_data));
6311         bw_data.tc_valid_bits = ch->enabled_tc;
6312         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
6313                 bw_data.tc_bw_credits[i] = bw_share[i];
6314
6315         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, ch->seid,
6316                                        &bw_data, NULL);
6317         if (ret) {
6318                 dev_info(&vsi->back->pdev->dev,
6319                          "Config VSI BW allocation per TC failed, aq_err: %d for new_vsi->seid %u\n",
6320                          vsi->back->hw.aq.asq_last_status, ch->seid);
6321                 return -EINVAL;
6322         }
6323
6324         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
6325                 ch->info.qs_handle[i] = bw_data.qs_handles[i];
6326
6327         return 0;
6328 }
6329
6330 /**
6331  * i40e_channel_config_tx_ring - config TX ring associated with new channel
6332  * @pf: ptr to PF device
6333  * @vsi: the VSI being setup
6334  * @ch: ptr to channel structure
6335  *
6336  * Configure TX rings associated with channel (VSI) since queues are being
6337  * from parent VSI.
6338  **/
6339 static int i40e_channel_config_tx_ring(struct i40e_pf *pf,
6340                                        struct i40e_vsi *vsi,
6341                                        struct i40e_channel *ch)
6342 {
6343         i40e_status ret;
6344         int i;
6345         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
6346
6347         /* Enable ETS TCs with equal BW Share for now across all VSIs */
6348         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6349                 if (ch->enabled_tc & BIT(i))
6350                         bw_share[i] = 1;
6351         }
6352
6353         /* configure BW for new VSI */
6354         ret = i40e_channel_config_bw(vsi, ch, bw_share);
6355         if (ret) {
6356                 dev_info(&vsi->back->pdev->dev,
6357                          "Failed configuring TC map %d for channel (seid %u)\n",
6358                          ch->enabled_tc, ch->seid);
6359                 return ret;
6360         }
6361
6362         for (i = 0; i < ch->num_queue_pairs; i++) {
6363                 struct i40e_ring *tx_ring, *rx_ring;
6364                 u16 pf_q;
6365
6366                 pf_q = ch->base_queue + i;
6367
6368                 /* Get to TX ring ptr of main VSI, for re-setup TX queue
6369                  * context
6370                  */
6371                 tx_ring = vsi->tx_rings[pf_q];
6372                 tx_ring->ch = ch;
6373
6374                 /* Get the RX ring ptr */
6375                 rx_ring = vsi->rx_rings[pf_q];
6376                 rx_ring->ch = ch;
6377         }
6378
6379         return 0;
6380 }
6381
6382 /**
6383  * i40e_setup_hw_channel - setup new channel
6384  * @pf: ptr to PF device
6385  * @vsi: the VSI being setup
6386  * @ch: ptr to channel structure
6387  * @uplink_seid: underlying HW switching element (VEB) ID
6388  * @type: type of channel to be created (VMDq2/VF)
6389  *
6390  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6391  * and configures TX rings accordingly
6392  **/
6393 static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
6394                                         struct i40e_vsi *vsi,
6395                                         struct i40e_channel *ch,
6396                                         u16 uplink_seid, u8 type)
6397 {
6398         int ret;
6399
6400         ch->initialized = false;
6401         ch->base_queue = vsi->next_base_queue;
6402         ch->type = type;
6403
6404         /* Proceed with creation of channel (VMDq2) VSI */
6405         ret = i40e_add_channel(pf, uplink_seid, ch);
6406         if (ret) {
6407                 dev_info(&pf->pdev->dev,
6408                          "failed to add_channel using uplink_seid %u\n",
6409                          uplink_seid);
6410                 return ret;
6411         }
6412
6413         /* Mark the successful creation of channel */
6414         ch->initialized = true;
6415
6416         /* Reconfigure TX queues using QTX_CTL register */
6417         ret = i40e_channel_config_tx_ring(pf, vsi, ch);
6418         if (ret) {
6419                 dev_info(&pf->pdev->dev,
6420                          "failed to configure TX rings for channel %u\n",
6421                          ch->seid);
6422                 return ret;
6423         }
6424
6425         /* update 'next_base_queue' */
6426         vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
6427         dev_dbg(&pf->pdev->dev,
6428                 "Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
6429                 ch->seid, ch->vsi_number, ch->stat_counter_idx,
6430                 ch->num_queue_pairs,
6431                 vsi->next_base_queue);
6432         return ret;
6433 }
6434
6435 /**
6436  * i40e_setup_channel - setup new channel using uplink element
6437  * @pf: ptr to PF device
6438  * @vsi: pointer to the VSI to set up the channel within
6439  * @ch: ptr to channel structure
6440  *
6441  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6442  * and uplink switching element (uplink_seid)
6443  **/
6444 static bool i40e_setup_channel(struct i40e_pf *pf, struct i40e_vsi *vsi,
6445                                struct i40e_channel *ch)
6446 {
6447         u8 vsi_type;
6448         u16 seid;
6449         int ret;
6450
6451         if (vsi->type == I40E_VSI_MAIN) {
6452                 vsi_type = I40E_VSI_VMDQ2;
6453         } else {
6454                 dev_err(&pf->pdev->dev, "unsupported parent vsi type(%d)\n",
6455                         vsi->type);
6456                 return false;
6457         }
6458
6459         /* underlying switching element */
6460         seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6461
6462         /* create channel (VSI), configure TX rings */
6463         ret = i40e_setup_hw_channel(pf, vsi, ch, seid, vsi_type);
6464         if (ret) {
6465                 dev_err(&pf->pdev->dev, "failed to setup hw_channel\n");
6466                 return false;
6467         }
6468
6469         return ch->initialized ? true : false;
6470 }
6471
6472 /**
6473  * i40e_validate_and_set_switch_mode - sets up switch mode correctly
6474  * @vsi: ptr to VSI which has PF backing
6475  *
6476  * Sets up switch mode correctly if it needs to be changed and perform
6477  * what are allowed modes.
6478  **/
6479 static int i40e_validate_and_set_switch_mode(struct i40e_vsi *vsi)
6480 {
6481         u8 mode;
6482         struct i40e_pf *pf = vsi->back;
6483         struct i40e_hw *hw = &pf->hw;
6484         int ret;
6485
6486         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_dev_capabilities);
6487         if (ret)
6488                 return -EINVAL;
6489
6490         if (hw->dev_caps.switch_mode) {
6491                 /* if switch mode is set, support mode2 (non-tunneled for
6492                  * cloud filter) for now
6493                  */
6494                 u32 switch_mode = hw->dev_caps.switch_mode &
6495                                   I40E_SWITCH_MODE_MASK;
6496                 if (switch_mode >= I40E_CLOUD_FILTER_MODE1) {
6497                         if (switch_mode == I40E_CLOUD_FILTER_MODE2)
6498                                 return 0;
6499                         dev_err(&pf->pdev->dev,
6500                                 "Invalid switch_mode (%d), only non-tunneled mode for cloud filter is supported\n",
6501                                 hw->dev_caps.switch_mode);
6502                         return -EINVAL;
6503                 }
6504         }
6505
6506         /* Set Bit 7 to be valid */
6507         mode = I40E_AQ_SET_SWITCH_BIT7_VALID;
6508
6509         /* Set L4type for TCP support */
6510         mode |= I40E_AQ_SET_SWITCH_L4_TYPE_TCP;
6511
6512         /* Set cloud filter mode */
6513         mode |= I40E_AQ_SET_SWITCH_MODE_NON_TUNNEL;
6514
6515         /* Prep mode field for set_switch_config */
6516         ret = i40e_aq_set_switch_config(hw, pf->last_sw_conf_flags,
6517                                         pf->last_sw_conf_valid_flags,
6518                                         mode, NULL);
6519         if (ret && hw->aq.asq_last_status != I40E_AQ_RC_ESRCH)
6520                 dev_err(&pf->pdev->dev,
6521                         "couldn't set switch config bits, err %s aq_err %s\n",
6522                         i40e_stat_str(hw, ret),
6523                         i40e_aq_str(hw,
6524                                     hw->aq.asq_last_status));
6525
6526         return ret;
6527 }
6528
6529 /**
6530  * i40e_create_queue_channel - function to create channel
6531  * @vsi: VSI to be configured
6532  * @ch: ptr to channel (it contains channel specific params)
6533  *
6534  * This function creates channel (VSI) using num_queues specified by user,
6535  * reconfigs RSS if needed.
6536  **/
6537 int i40e_create_queue_channel(struct i40e_vsi *vsi,
6538                               struct i40e_channel *ch)
6539 {
6540         struct i40e_pf *pf = vsi->back;
6541         bool reconfig_rss;
6542         int err;
6543
6544         if (!ch)
6545                 return -EINVAL;
6546
6547         if (!ch->num_queue_pairs) {
6548                 dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
6549                         ch->num_queue_pairs);
6550                 return -EINVAL;
6551         }
6552
6553         /* validate user requested num_queues for channel */
6554         err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
6555                                        &reconfig_rss);
6556         if (err) {
6557                 dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
6558                          ch->num_queue_pairs);
6559                 return -EINVAL;
6560         }
6561
6562         /* By default we are in VEPA mode, if this is the first VF/VMDq
6563          * VSI to be added switch to VEB mode.
6564          */
6565
6566         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
6567                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
6568
6569                 if (vsi->type == I40E_VSI_MAIN) {
6570                         if (i40e_is_tc_mqprio_enabled(pf))
6571                                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
6572                         else
6573                                 i40e_do_reset_safe(pf, I40E_PF_RESET_FLAG);
6574                 }
6575                 /* now onwards for main VSI, number of queues will be value
6576                  * of TC0's queue count
6577                  */
6578         }
6579
6580         /* By this time, vsi->cnt_q_avail shall be set to non-zero and
6581          * it should be more than num_queues
6582          */
6583         if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
6584                 dev_dbg(&pf->pdev->dev,
6585                         "Error: cnt_q_avail (%u) less than num_queues %d\n",
6586                         vsi->cnt_q_avail, ch->num_queue_pairs);
6587                 return -EINVAL;
6588         }
6589
6590         /* reconfig_rss only if vsi type is MAIN_VSI */
6591         if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
6592                 err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
6593                 if (err) {
6594                         dev_info(&pf->pdev->dev,
6595                                  "Error: unable to reconfig rss for num_queues (%u)\n",
6596                                  ch->num_queue_pairs);
6597                         return -EINVAL;
6598                 }
6599         }
6600
6601         if (!i40e_setup_channel(pf, vsi, ch)) {
6602                 dev_info(&pf->pdev->dev, "Failed to setup channel\n");
6603                 return -EINVAL;
6604         }
6605
6606         dev_info(&pf->pdev->dev,
6607                  "Setup channel (id:%u) utilizing num_queues %d\n",
6608                  ch->seid, ch->num_queue_pairs);
6609
6610         /* configure VSI for BW limit */
6611         if (ch->max_tx_rate) {
6612                 u64 credits = ch->max_tx_rate;
6613
6614                 if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
6615                         return -EINVAL;
6616
6617                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
6618                 dev_dbg(&pf->pdev->dev,
6619                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
6620                         ch->max_tx_rate,
6621                         credits,
6622                         ch->seid);
6623         }
6624
6625         /* in case of VF, this will be main SRIOV VSI */
6626         ch->parent_vsi = vsi;
6627
6628         /* and update main_vsi's count for queue_available to use */
6629         vsi->cnt_q_avail -= ch->num_queue_pairs;
6630
6631         return 0;
6632 }
6633
6634 /**
6635  * i40e_configure_queue_channels - Add queue channel for the given TCs
6636  * @vsi: VSI to be configured
6637  *
6638  * Configures queue channel mapping to the given TCs
6639  **/
6640 static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
6641 {
6642         struct i40e_channel *ch;
6643         u64 max_rate = 0;
6644         int ret = 0, i;
6645
6646         /* Create app vsi with the TCs. Main VSI with TC0 is already set up */
6647         vsi->tc_seid_map[0] = vsi->seid;
6648         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6649                 if (vsi->tc_config.enabled_tc & BIT(i)) {
6650                         ch = kzalloc(sizeof(*ch), GFP_KERNEL);
6651                         if (!ch) {
6652                                 ret = -ENOMEM;
6653                                 goto err_free;
6654                         }
6655
6656                         INIT_LIST_HEAD(&ch->list);
6657                         ch->num_queue_pairs =
6658                                 vsi->tc_config.tc_info[i].qcount;
6659                         ch->base_queue =
6660                                 vsi->tc_config.tc_info[i].qoffset;
6661
6662                         /* Bandwidth limit through tc interface is in bytes/s,
6663                          * change to Mbit/s
6664                          */
6665                         max_rate = vsi->mqprio_qopt.max_rate[i];
6666                         do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6667                         ch->max_tx_rate = max_rate;
6668
6669                         list_add_tail(&ch->list, &vsi->ch_list);
6670
6671                         ret = i40e_create_queue_channel(vsi, ch);
6672                         if (ret) {
6673                                 dev_err(&vsi->back->pdev->dev,
6674                                         "Failed creating queue channel with TC%d: queues %d\n",
6675                                         i, ch->num_queue_pairs);
6676                                 goto err_free;
6677                         }
6678                         vsi->tc_seid_map[i] = ch->seid;
6679                 }
6680         }
6681
6682         /* reset to reconfigure TX queue contexts */
6683         i40e_do_reset(vsi->back, I40E_PF_RESET_FLAG, true);
6684         return ret;
6685
6686 err_free:
6687         i40e_remove_queue_channels(vsi);
6688         return ret;
6689 }
6690
6691 /**
6692  * i40e_veb_config_tc - Configure TCs for given VEB
6693  * @veb: given VEB
6694  * @enabled_tc: TC bitmap
6695  *
6696  * Configures given TC bitmap for VEB (switching) element
6697  **/
6698 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
6699 {
6700         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
6701         struct i40e_pf *pf = veb->pf;
6702         int ret = 0;
6703         int i;
6704
6705         /* No TCs or already enabled TCs just return */
6706         if (!enabled_tc || veb->enabled_tc == enabled_tc)
6707                 return ret;
6708
6709         bw_data.tc_valid_bits = enabled_tc;
6710         /* bw_data.absolute_credits is not set (relative) */
6711
6712         /* Enable ETS TCs with equal BW Share for now */
6713         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6714                 if (enabled_tc & BIT(i))
6715                         bw_data.tc_bw_share_credits[i] = 1;
6716         }
6717
6718         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
6719                                                    &bw_data, NULL);
6720         if (ret) {
6721                 dev_info(&pf->pdev->dev,
6722                          "VEB bw config failed, err %s aq_err %s\n",
6723                          i40e_stat_str(&pf->hw, ret),
6724                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6725                 goto out;
6726         }
6727
6728         /* Update the BW information */
6729         ret = i40e_veb_get_bw_info(veb);
6730         if (ret) {
6731                 dev_info(&pf->pdev->dev,
6732                          "Failed getting veb bw config, err %s aq_err %s\n",
6733                          i40e_stat_str(&pf->hw, ret),
6734                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6735         }
6736
6737 out:
6738         return ret;
6739 }
6740
6741 #ifdef CONFIG_I40E_DCB
6742 /**
6743  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
6744  * @pf: PF struct
6745  *
6746  * Reconfigure VEB/VSIs on a given PF; it is assumed that
6747  * the caller would've quiesce all the VSIs before calling
6748  * this function
6749  **/
6750 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
6751 {
6752         u8 tc_map = 0;
6753         int ret;
6754         u8 v;
6755
6756         /* Enable the TCs available on PF to all VEBs */
6757         tc_map = i40e_pf_get_tc_map(pf);
6758         if (tc_map == I40E_DEFAULT_TRAFFIC_CLASS)
6759                 return;
6760
6761         for (v = 0; v < I40E_MAX_VEB; v++) {
6762                 if (!pf->veb[v])
6763                         continue;
6764                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
6765                 if (ret) {
6766                         dev_info(&pf->pdev->dev,
6767                                  "Failed configuring TC for VEB seid=%d\n",
6768                                  pf->veb[v]->seid);
6769                         /* Will try to configure as many components */
6770                 }
6771         }
6772
6773         /* Update each VSI */
6774         for (v = 0; v < pf->num_alloc_vsi; v++) {
6775                 if (!pf->vsi[v])
6776                         continue;
6777
6778                 /* - Enable all TCs for the LAN VSI
6779                  * - For all others keep them at TC0 for now
6780                  */
6781                 if (v == pf->lan_vsi)
6782                         tc_map = i40e_pf_get_tc_map(pf);
6783                 else
6784                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
6785
6786                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
6787                 if (ret) {
6788                         dev_info(&pf->pdev->dev,
6789                                  "Failed configuring TC for VSI seid=%d\n",
6790                                  pf->vsi[v]->seid);
6791                         /* Will try to configure as many components */
6792                 } else {
6793                         /* Re-configure VSI vectors based on updated TC map */
6794                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
6795                         if (pf->vsi[v]->netdev)
6796                                 i40e_dcbnl_set_all(pf->vsi[v]);
6797                 }
6798         }
6799 }
6800
6801 /**
6802  * i40e_resume_port_tx - Resume port Tx
6803  * @pf: PF struct
6804  *
6805  * Resume a port's Tx and issue a PF reset in case of failure to
6806  * resume.
6807  **/
6808 static int i40e_resume_port_tx(struct i40e_pf *pf)
6809 {
6810         struct i40e_hw *hw = &pf->hw;
6811         int ret;
6812
6813         ret = i40e_aq_resume_port_tx(hw, NULL);
6814         if (ret) {
6815                 dev_info(&pf->pdev->dev,
6816                          "Resume Port Tx failed, err %s aq_err %s\n",
6817                           i40e_stat_str(&pf->hw, ret),
6818                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6819                 /* Schedule PF reset to recover */
6820                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6821                 i40e_service_event_schedule(pf);
6822         }
6823
6824         return ret;
6825 }
6826
6827 /**
6828  * i40e_suspend_port_tx - Suspend port Tx
6829  * @pf: PF struct
6830  *
6831  * Suspend a port's Tx and issue a PF reset in case of failure.
6832  **/
6833 static int i40e_suspend_port_tx(struct i40e_pf *pf)
6834 {
6835         struct i40e_hw *hw = &pf->hw;
6836         int ret;
6837
6838         ret = i40e_aq_suspend_port_tx(hw, pf->mac_seid, NULL);
6839         if (ret) {
6840                 dev_info(&pf->pdev->dev,
6841                          "Suspend Port Tx failed, err %s aq_err %s\n",
6842                          i40e_stat_str(&pf->hw, ret),
6843                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6844                 /* Schedule PF reset to recover */
6845                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6846                 i40e_service_event_schedule(pf);
6847         }
6848
6849         return ret;
6850 }
6851
6852 /**
6853  * i40e_hw_set_dcb_config - Program new DCBX settings into HW
6854  * @pf: PF being configured
6855  * @new_cfg: New DCBX configuration
6856  *
6857  * Program DCB settings into HW and reconfigure VEB/VSIs on
6858  * given PF. Uses "Set LLDP MIB" AQC to program the hardware.
6859  **/
6860 static int i40e_hw_set_dcb_config(struct i40e_pf *pf,
6861                                   struct i40e_dcbx_config *new_cfg)
6862 {
6863         struct i40e_dcbx_config *old_cfg = &pf->hw.local_dcbx_config;
6864         int ret;
6865
6866         /* Check if need reconfiguration */
6867         if (!memcmp(&new_cfg, &old_cfg, sizeof(new_cfg))) {
6868                 dev_dbg(&pf->pdev->dev, "No Change in DCB Config required.\n");
6869                 return 0;
6870         }
6871
6872         /* Config change disable all VSIs */
6873         i40e_pf_quiesce_all_vsi(pf);
6874
6875         /* Copy the new config to the current config */
6876         *old_cfg = *new_cfg;
6877         old_cfg->etsrec = old_cfg->etscfg;
6878         ret = i40e_set_dcb_config(&pf->hw);
6879         if (ret) {
6880                 dev_info(&pf->pdev->dev,
6881                          "Set DCB Config failed, err %s aq_err %s\n",
6882                          i40e_stat_str(&pf->hw, ret),
6883                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6884                 goto out;
6885         }
6886
6887         /* Changes in configuration update VEB/VSI */
6888         i40e_dcb_reconfigure(pf);
6889 out:
6890         /* In case of reset do not try to resume anything */
6891         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) {
6892                 /* Re-start the VSIs if disabled */
6893                 ret = i40e_resume_port_tx(pf);
6894                 /* In case of error no point in resuming VSIs */
6895                 if (ret)
6896                         goto err;
6897                 i40e_pf_unquiesce_all_vsi(pf);
6898         }
6899 err:
6900         return ret;
6901 }
6902
6903 /**
6904  * i40e_hw_dcb_config - Program new DCBX settings into HW
6905  * @pf: PF being configured
6906  * @new_cfg: New DCBX configuration
6907  *
6908  * Program DCB settings into HW and reconfigure VEB/VSIs on
6909  * given PF
6910  **/
6911 int i40e_hw_dcb_config(struct i40e_pf *pf, struct i40e_dcbx_config *new_cfg)
6912 {
6913         struct i40e_aqc_configure_switching_comp_ets_data ets_data;
6914         u8 prio_type[I40E_MAX_TRAFFIC_CLASS] = {0};
6915         u32 mfs_tc[I40E_MAX_TRAFFIC_CLASS];
6916         struct i40e_dcbx_config *old_cfg;
6917         u8 mode[I40E_MAX_TRAFFIC_CLASS];
6918         struct i40e_rx_pb_config pb_cfg;
6919         struct i40e_hw *hw = &pf->hw;
6920         u8 num_ports = hw->num_ports;
6921         bool need_reconfig;
6922         int ret = -EINVAL;
6923         u8 lltc_map = 0;
6924         u8 tc_map = 0;
6925         u8 new_numtc;
6926         u8 i;
6927
6928         dev_dbg(&pf->pdev->dev, "Configuring DCB registers directly\n");
6929         /* Un-pack information to Program ETS HW via shared API
6930          * numtc, tcmap
6931          * LLTC map
6932          * ETS/NON-ETS arbiter mode
6933          * max exponent (credit refills)
6934          * Total number of ports
6935          * PFC priority bit-map
6936          * Priority Table
6937          * BW % per TC
6938          * Arbiter mode between UPs sharing same TC
6939          * TSA table (ETS or non-ETS)
6940          * EEE enabled or not
6941          * MFS TC table
6942          */
6943
6944         new_numtc = i40e_dcb_get_num_tc(new_cfg);
6945
6946         memset(&ets_data, 0, sizeof(ets_data));
6947         for (i = 0; i < new_numtc; i++) {
6948                 tc_map |= BIT(i);
6949                 switch (new_cfg->etscfg.tsatable[i]) {
6950                 case I40E_IEEE_TSA_ETS:
6951                         prio_type[i] = I40E_DCB_PRIO_TYPE_ETS;
6952                         ets_data.tc_bw_share_credits[i] =
6953                                         new_cfg->etscfg.tcbwtable[i];
6954                         break;
6955                 case I40E_IEEE_TSA_STRICT:
6956                         prio_type[i] = I40E_DCB_PRIO_TYPE_STRICT;
6957                         lltc_map |= BIT(i);
6958                         ets_data.tc_bw_share_credits[i] =
6959                                         I40E_DCB_STRICT_PRIO_CREDITS;
6960                         break;
6961                 default:
6962                         /* Invalid TSA type */
6963                         need_reconfig = false;
6964                         goto out;
6965                 }
6966         }
6967
6968         old_cfg = &hw->local_dcbx_config;
6969         /* Check if need reconfiguration */
6970         need_reconfig = i40e_dcb_need_reconfig(pf, old_cfg, new_cfg);
6971
6972         /* If needed, enable/disable frame tagging, disable all VSIs
6973          * and suspend port tx
6974          */
6975         if (need_reconfig) {
6976                 /* Enable DCB tagging only when more than one TC */
6977                 if (new_numtc > 1)
6978                         pf->flags |= I40E_FLAG_DCB_ENABLED;
6979                 else
6980                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6981
6982                 set_bit(__I40E_PORT_SUSPENDED, pf->state);
6983                 /* Reconfiguration needed quiesce all VSIs */
6984                 i40e_pf_quiesce_all_vsi(pf);
6985                 ret = i40e_suspend_port_tx(pf);
6986                 if (ret)
6987                         goto err;
6988         }
6989
6990         /* Configure Port ETS Tx Scheduler */
6991         ets_data.tc_valid_bits = tc_map;
6992         ets_data.tc_strict_priority_flags = lltc_map;
6993         ret = i40e_aq_config_switch_comp_ets
6994                 (hw, pf->mac_seid, &ets_data,
6995                  i40e_aqc_opc_modify_switching_comp_ets, NULL);
6996         if (ret) {
6997                 dev_info(&pf->pdev->dev,
6998                          "Modify Port ETS failed, err %s aq_err %s\n",
6999                          i40e_stat_str(&pf->hw, ret),
7000                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7001                 goto out;
7002         }
7003
7004         /* Configure Rx ETS HW */
7005         memset(&mode, I40E_DCB_ARB_MODE_ROUND_ROBIN, sizeof(mode));
7006         i40e_dcb_hw_set_num_tc(hw, new_numtc);
7007         i40e_dcb_hw_rx_fifo_config(hw, I40E_DCB_ARB_MODE_ROUND_ROBIN,
7008                                    I40E_DCB_ARB_MODE_STRICT_PRIORITY,
7009                                    I40E_DCB_DEFAULT_MAX_EXPONENT,
7010                                    lltc_map);
7011         i40e_dcb_hw_rx_cmd_monitor_config(hw, new_numtc, num_ports);
7012         i40e_dcb_hw_rx_ets_bw_config(hw, new_cfg->etscfg.tcbwtable, mode,
7013                                      prio_type);
7014         i40e_dcb_hw_pfc_config(hw, new_cfg->pfc.pfcenable,
7015                                new_cfg->etscfg.prioritytable);
7016         i40e_dcb_hw_rx_up2tc_config(hw, new_cfg->etscfg.prioritytable);
7017
7018         /* Configure Rx Packet Buffers in HW */
7019         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7020                 mfs_tc[i] = pf->vsi[pf->lan_vsi]->netdev->mtu;
7021                 mfs_tc[i] += I40E_PACKET_HDR_PAD;
7022         }
7023
7024         i40e_dcb_hw_calculate_pool_sizes(hw, num_ports,
7025                                          false, new_cfg->pfc.pfcenable,
7026                                          mfs_tc, &pb_cfg);
7027         i40e_dcb_hw_rx_pb_config(hw, &pf->pb_cfg, &pb_cfg);
7028
7029         /* Update the local Rx Packet buffer config */
7030         pf->pb_cfg = pb_cfg;
7031
7032         /* Inform the FW about changes to DCB configuration */
7033         ret = i40e_aq_dcb_updated(&pf->hw, NULL);
7034         if (ret) {
7035                 dev_info(&pf->pdev->dev,
7036                          "DCB Updated failed, err %s aq_err %s\n",
7037                          i40e_stat_str(&pf->hw, ret),
7038                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7039                 goto out;
7040         }
7041
7042         /* Update the port DCBx configuration */
7043         *old_cfg = *new_cfg;
7044
7045         /* Changes in configuration update VEB/VSI */
7046         i40e_dcb_reconfigure(pf);
7047 out:
7048         /* Re-start the VSIs if disabled */
7049         if (need_reconfig) {
7050                 ret = i40e_resume_port_tx(pf);
7051
7052                 clear_bit(__I40E_PORT_SUSPENDED, pf->state);
7053                 /* In case of error no point in resuming VSIs */
7054                 if (ret)
7055                         goto err;
7056
7057                 /* Wait for the PF's queues to be disabled */
7058                 ret = i40e_pf_wait_queues_disabled(pf);
7059                 if (ret) {
7060                         /* Schedule PF reset to recover */
7061                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
7062                         i40e_service_event_schedule(pf);
7063                         goto err;
7064                 } else {
7065                         i40e_pf_unquiesce_all_vsi(pf);
7066                         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
7067                         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
7068                 }
7069                 /* registers are set, lets apply */
7070                 if (pf->hw_features & I40E_HW_USE_SET_LLDP_MIB)
7071                         ret = i40e_hw_set_dcb_config(pf, new_cfg);
7072         }
7073
7074 err:
7075         return ret;
7076 }
7077
7078 /**
7079  * i40e_dcb_sw_default_config - Set default DCB configuration when DCB in SW
7080  * @pf: PF being queried
7081  *
7082  * Set default DCB configuration in case DCB is to be done in SW.
7083  **/
7084 int i40e_dcb_sw_default_config(struct i40e_pf *pf)
7085 {
7086         struct i40e_dcbx_config *dcb_cfg = &pf->hw.local_dcbx_config;
7087         struct i40e_aqc_configure_switching_comp_ets_data ets_data;
7088         struct i40e_hw *hw = &pf->hw;
7089         int err;
7090
7091         if (pf->hw_features & I40E_HW_USE_SET_LLDP_MIB) {
7092                 /* Update the local cached instance with TC0 ETS */
7093                 memset(&pf->tmp_cfg, 0, sizeof(struct i40e_dcbx_config));
7094                 pf->tmp_cfg.etscfg.willing = I40E_IEEE_DEFAULT_ETS_WILLING;
7095                 pf->tmp_cfg.etscfg.maxtcs = 0;
7096                 pf->tmp_cfg.etscfg.tcbwtable[0] = I40E_IEEE_DEFAULT_ETS_TCBW;
7097                 pf->tmp_cfg.etscfg.tsatable[0] = I40E_IEEE_TSA_ETS;
7098                 pf->tmp_cfg.pfc.willing = I40E_IEEE_DEFAULT_PFC_WILLING;
7099                 pf->tmp_cfg.pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
7100                 /* FW needs one App to configure HW */
7101                 pf->tmp_cfg.numapps = I40E_IEEE_DEFAULT_NUM_APPS;
7102                 pf->tmp_cfg.app[0].selector = I40E_APP_SEL_ETHTYPE;
7103                 pf->tmp_cfg.app[0].priority = I40E_IEEE_DEFAULT_APP_PRIO;
7104                 pf->tmp_cfg.app[0].protocolid = I40E_APP_PROTOID_FCOE;
7105
7106                 return i40e_hw_set_dcb_config(pf, &pf->tmp_cfg);
7107         }
7108
7109         memset(&ets_data, 0, sizeof(ets_data));
7110         ets_data.tc_valid_bits = I40E_DEFAULT_TRAFFIC_CLASS; /* TC0 only */
7111         ets_data.tc_strict_priority_flags = 0; /* ETS */
7112         ets_data.tc_bw_share_credits[0] = I40E_IEEE_DEFAULT_ETS_TCBW; /* 100% to TC0 */
7113
7114         /* Enable ETS on the Physical port */
7115         err = i40e_aq_config_switch_comp_ets
7116                 (hw, pf->mac_seid, &ets_data,
7117                  i40e_aqc_opc_enable_switching_comp_ets, NULL);
7118         if (err) {
7119                 dev_info(&pf->pdev->dev,
7120                          "Enable Port ETS failed, err %s aq_err %s\n",
7121                          i40e_stat_str(&pf->hw, err),
7122                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7123                 err = -ENOENT;
7124                 goto out;
7125         }
7126
7127         /* Update the local cached instance with TC0 ETS */
7128         dcb_cfg->etscfg.willing = I40E_IEEE_DEFAULT_ETS_WILLING;
7129         dcb_cfg->etscfg.cbs = 0;
7130         dcb_cfg->etscfg.maxtcs = I40E_MAX_TRAFFIC_CLASS;
7131         dcb_cfg->etscfg.tcbwtable[0] = I40E_IEEE_DEFAULT_ETS_TCBW;
7132
7133 out:
7134         return err;
7135 }
7136
7137 /**
7138  * i40e_init_pf_dcb - Initialize DCB configuration
7139  * @pf: PF being configured
7140  *
7141  * Query the current DCB configuration and cache it
7142  * in the hardware structure
7143  **/
7144 static int i40e_init_pf_dcb(struct i40e_pf *pf)
7145 {
7146         struct i40e_hw *hw = &pf->hw;
7147         int err;
7148
7149         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable
7150          * Also do not enable DCBx if FW LLDP agent is disabled
7151          */
7152         if (pf->hw_features & I40E_HW_NO_DCB_SUPPORT) {
7153                 dev_info(&pf->pdev->dev, "DCB is not supported.\n");
7154                 err = I40E_NOT_SUPPORTED;
7155                 goto out;
7156         }
7157         if (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) {
7158                 dev_info(&pf->pdev->dev, "FW LLDP is disabled, attempting SW DCB\n");
7159                 err = i40e_dcb_sw_default_config(pf);
7160                 if (err) {
7161                         dev_info(&pf->pdev->dev, "Could not initialize SW DCB\n");
7162                         goto out;
7163                 }
7164                 dev_info(&pf->pdev->dev, "SW DCB initialization succeeded.\n");
7165                 pf->dcbx_cap = DCB_CAP_DCBX_HOST |
7166                                DCB_CAP_DCBX_VER_IEEE;
7167                 /* at init capable but disabled */
7168                 pf->flags |= I40E_FLAG_DCB_CAPABLE;
7169                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7170                 goto out;
7171         }
7172         err = i40e_init_dcb(hw, true);
7173         if (!err) {
7174                 /* Device/Function is not DCBX capable */
7175                 if ((!hw->func_caps.dcb) ||
7176                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
7177                         dev_info(&pf->pdev->dev,
7178                                  "DCBX offload is not supported or is disabled for this PF.\n");
7179                 } else {
7180                         /* When status is not DISABLED then DCBX in FW */
7181                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
7182                                        DCB_CAP_DCBX_VER_IEEE;
7183
7184                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
7185                         /* Enable DCB tagging only when more than one TC
7186                          * or explicitly disable if only one TC
7187                          */
7188                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
7189                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
7190                         else
7191                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7192                         dev_dbg(&pf->pdev->dev,
7193                                 "DCBX offload is supported for this PF.\n");
7194                 }
7195         } else if (pf->hw.aq.asq_last_status == I40E_AQ_RC_EPERM) {
7196                 dev_info(&pf->pdev->dev, "FW LLDP disabled for this PF.\n");
7197                 pf->flags |= I40E_FLAG_DISABLE_FW_LLDP;
7198         } else {
7199                 dev_info(&pf->pdev->dev,
7200                          "Query for DCB configuration failed, err %s aq_err %s\n",
7201                          i40e_stat_str(&pf->hw, err),
7202                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7203         }
7204
7205 out:
7206         return err;
7207 }
7208 #endif /* CONFIG_I40E_DCB */
7209
7210 /**
7211  * i40e_print_link_message - print link up or down
7212  * @vsi: the VSI for which link needs a message
7213  * @isup: true of link is up, false otherwise
7214  */
7215 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
7216 {
7217         enum i40e_aq_link_speed new_speed;
7218         struct i40e_pf *pf = vsi->back;
7219         char *speed = "Unknown";
7220         char *fc = "Unknown";
7221         char *fec = "";
7222         char *req_fec = "";
7223         char *an = "";
7224
7225         if (isup)
7226                 new_speed = pf->hw.phy.link_info.link_speed;
7227         else
7228                 new_speed = I40E_LINK_SPEED_UNKNOWN;
7229
7230         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
7231                 return;
7232         vsi->current_isup = isup;
7233         vsi->current_speed = new_speed;
7234         if (!isup) {
7235                 netdev_info(vsi->netdev, "NIC Link is Down\n");
7236                 return;
7237         }
7238
7239         /* Warn user if link speed on NPAR enabled partition is not at
7240          * least 10GB
7241          */
7242         if (pf->hw.func_caps.npar_enable &&
7243             (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
7244              pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
7245                 netdev_warn(vsi->netdev,
7246                             "The partition detected link speed that is less than 10Gbps\n");
7247
7248         switch (pf->hw.phy.link_info.link_speed) {
7249         case I40E_LINK_SPEED_40GB:
7250                 speed = "40 G";
7251                 break;
7252         case I40E_LINK_SPEED_20GB:
7253                 speed = "20 G";
7254                 break;
7255         case I40E_LINK_SPEED_25GB:
7256                 speed = "25 G";
7257                 break;
7258         case I40E_LINK_SPEED_10GB:
7259                 speed = "10 G";
7260                 break;
7261         case I40E_LINK_SPEED_5GB:
7262                 speed = "5 G";
7263                 break;
7264         case I40E_LINK_SPEED_2_5GB:
7265                 speed = "2.5 G";
7266                 break;
7267         case I40E_LINK_SPEED_1GB:
7268                 speed = "1000 M";
7269                 break;
7270         case I40E_LINK_SPEED_100MB:
7271                 speed = "100 M";
7272                 break;
7273         default:
7274                 break;
7275         }
7276
7277         switch (pf->hw.fc.current_mode) {
7278         case I40E_FC_FULL:
7279                 fc = "RX/TX";
7280                 break;
7281         case I40E_FC_TX_PAUSE:
7282                 fc = "TX";
7283                 break;
7284         case I40E_FC_RX_PAUSE:
7285                 fc = "RX";
7286                 break;
7287         default:
7288                 fc = "None";
7289                 break;
7290         }
7291
7292         if (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
7293                 req_fec = "None";
7294                 fec = "None";
7295                 an = "False";
7296
7297                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
7298                         an = "True";
7299
7300                 if (pf->hw.phy.link_info.fec_info &
7301                     I40E_AQ_CONFIG_FEC_KR_ENA)
7302                         fec = "CL74 FC-FEC/BASE-R";
7303                 else if (pf->hw.phy.link_info.fec_info &
7304                          I40E_AQ_CONFIG_FEC_RS_ENA)
7305                         fec = "CL108 RS-FEC";
7306
7307                 /* 'CL108 RS-FEC' should be displayed when RS is requested, or
7308                  * both RS and FC are requested
7309                  */
7310                 if (vsi->back->hw.phy.link_info.req_fec_info &
7311                     (I40E_AQ_REQUEST_FEC_KR | I40E_AQ_REQUEST_FEC_RS)) {
7312                         if (vsi->back->hw.phy.link_info.req_fec_info &
7313                             I40E_AQ_REQUEST_FEC_RS)
7314                                 req_fec = "CL108 RS-FEC";
7315                         else
7316                                 req_fec = "CL74 FC-FEC/BASE-R";
7317                 }
7318                 netdev_info(vsi->netdev,
7319                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
7320                             speed, req_fec, fec, an, fc);
7321         } else if (pf->hw.device_id == I40E_DEV_ID_KX_X722) {
7322                 req_fec = "None";
7323                 fec = "None";
7324                 an = "False";
7325
7326                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
7327                         an = "True";
7328
7329                 if (pf->hw.phy.link_info.fec_info &
7330                     I40E_AQ_CONFIG_FEC_KR_ENA)
7331                         fec = "CL74 FC-FEC/BASE-R";
7332
7333                 if (pf->hw.phy.link_info.req_fec_info &
7334                     I40E_AQ_REQUEST_FEC_KR)
7335                         req_fec = "CL74 FC-FEC/BASE-R";
7336
7337                 netdev_info(vsi->netdev,
7338                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
7339                             speed, req_fec, fec, an, fc);
7340         } else {
7341                 netdev_info(vsi->netdev,
7342                             "NIC Link is Up, %sbps Full Duplex, Flow Control: %s\n",
7343                             speed, fc);
7344         }
7345
7346 }
7347
7348 /**
7349  * i40e_up_complete - Finish the last steps of bringing up a connection
7350  * @vsi: the VSI being configured
7351  **/
7352 static int i40e_up_complete(struct i40e_vsi *vsi)
7353 {
7354         struct i40e_pf *pf = vsi->back;
7355         int err;
7356
7357         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7358                 i40e_vsi_configure_msix(vsi);
7359         else
7360                 i40e_configure_msi_and_legacy(vsi);
7361
7362         /* start rings */
7363         err = i40e_vsi_start_rings(vsi);
7364         if (err)
7365                 return err;
7366
7367         clear_bit(__I40E_VSI_DOWN, vsi->state);
7368         i40e_napi_enable_all(vsi);
7369         i40e_vsi_enable_irq(vsi);
7370
7371         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
7372             (vsi->netdev)) {
7373                 i40e_print_link_message(vsi, true);
7374                 netif_tx_start_all_queues(vsi->netdev);
7375                 netif_carrier_on(vsi->netdev);
7376         }
7377
7378         /* replay FDIR SB filters */
7379         if (vsi->type == I40E_VSI_FDIR) {
7380                 /* reset fd counters */
7381                 pf->fd_add_err = 0;
7382                 pf->fd_atr_cnt = 0;
7383                 i40e_fdir_filter_restore(vsi);
7384         }
7385
7386         /* On the next run of the service_task, notify any clients of the new
7387          * opened netdev
7388          */
7389         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
7390         i40e_service_event_schedule(pf);
7391
7392         return 0;
7393 }
7394
7395 /**
7396  * i40e_vsi_reinit_locked - Reset the VSI
7397  * @vsi: the VSI being configured
7398  *
7399  * Rebuild the ring structs after some configuration
7400  * has changed, e.g. MTU size.
7401  **/
7402 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
7403 {
7404         struct i40e_pf *pf = vsi->back;
7405
7406         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
7407                 usleep_range(1000, 2000);
7408         i40e_down(vsi);
7409
7410         i40e_up(vsi);
7411         clear_bit(__I40E_CONFIG_BUSY, pf->state);
7412 }
7413
7414 /**
7415  * i40e_force_link_state - Force the link status
7416  * @pf: board private structure
7417  * @is_up: whether the link state should be forced up or down
7418  **/
7419 static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
7420 {
7421         struct i40e_aq_get_phy_abilities_resp abilities;
7422         struct i40e_aq_set_phy_config config = {0};
7423         bool non_zero_phy_type = is_up;
7424         struct i40e_hw *hw = &pf->hw;
7425         i40e_status err;
7426         u64 mask;
7427         u8 speed;
7428
7429         /* Card might've been put in an unstable state by other drivers
7430          * and applications, which causes incorrect speed values being
7431          * set on startup. In order to clear speed registers, we call
7432          * get_phy_capabilities twice, once to get initial state of
7433          * available speeds, and once to get current PHY config.
7434          */
7435         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
7436                                            NULL);
7437         if (err) {
7438                 dev_err(&pf->pdev->dev,
7439                         "failed to get phy cap., ret =  %s last_status =  %s\n",
7440                         i40e_stat_str(hw, err),
7441                         i40e_aq_str(hw, hw->aq.asq_last_status));
7442                 return err;
7443         }
7444         speed = abilities.link_speed;
7445
7446         /* Get the current phy config */
7447         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
7448                                            NULL);
7449         if (err) {
7450                 dev_err(&pf->pdev->dev,
7451                         "failed to get phy cap., ret =  %s last_status =  %s\n",
7452                         i40e_stat_str(hw, err),
7453                         i40e_aq_str(hw, hw->aq.asq_last_status));
7454                 return err;
7455         }
7456
7457         /* If link needs to go up, but was not forced to go down,
7458          * and its speed values are OK, no need for a flap
7459          * if non_zero_phy_type was set, still need to force up
7460          */
7461         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)
7462                 non_zero_phy_type = true;
7463         else if (is_up && abilities.phy_type != 0 && abilities.link_speed != 0)
7464                 return I40E_SUCCESS;
7465
7466         /* To force link we need to set bits for all supported PHY types,
7467          * but there are now more than 32, so we need to split the bitmap
7468          * across two fields.
7469          */
7470         mask = I40E_PHY_TYPES_BITMASK;
7471         config.phy_type =
7472                 non_zero_phy_type ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
7473         config.phy_type_ext =
7474                 non_zero_phy_type ? (u8)((mask >> 32) & 0xff) : 0;
7475         /* Copy the old settings, except of phy_type */
7476         config.abilities = abilities.abilities;
7477         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED) {
7478                 if (is_up)
7479                         config.abilities |= I40E_AQ_PHY_ENABLE_LINK;
7480                 else
7481                         config.abilities &= ~(I40E_AQ_PHY_ENABLE_LINK);
7482         }
7483         if (abilities.link_speed != 0)
7484                 config.link_speed = abilities.link_speed;
7485         else
7486                 config.link_speed = speed;
7487         config.eee_capability = abilities.eee_capability;
7488         config.eeer = abilities.eeer_val;
7489         config.low_power_ctrl = abilities.d3_lpan;
7490         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
7491                             I40E_AQ_PHY_FEC_CONFIG_MASK;
7492         err = i40e_aq_set_phy_config(hw, &config, NULL);
7493
7494         if (err) {
7495                 dev_err(&pf->pdev->dev,
7496                         "set phy config ret =  %s last_status =  %s\n",
7497                         i40e_stat_str(&pf->hw, err),
7498                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7499                 return err;
7500         }
7501
7502         /* Update the link info */
7503         err = i40e_update_link_info(hw);
7504         if (err) {
7505                 /* Wait a little bit (on 40G cards it sometimes takes a really
7506                  * long time for link to come back from the atomic reset)
7507                  * and try once more
7508                  */
7509                 msleep(1000);
7510                 i40e_update_link_info(hw);
7511         }
7512
7513         i40e_aq_set_link_restart_an(hw, is_up, NULL);
7514
7515         return I40E_SUCCESS;
7516 }
7517
7518 /**
7519  * i40e_up - Bring the connection back up after being down
7520  * @vsi: the VSI being configured
7521  **/
7522 int i40e_up(struct i40e_vsi *vsi)
7523 {
7524         int err;
7525
7526         if (vsi->type == I40E_VSI_MAIN &&
7527             (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
7528              vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
7529                 i40e_force_link_state(vsi->back, true);
7530
7531         err = i40e_vsi_configure(vsi);
7532         if (!err)
7533                 err = i40e_up_complete(vsi);
7534
7535         return err;
7536 }
7537
7538 /**
7539  * i40e_down - Shutdown the connection processing
7540  * @vsi: the VSI being stopped
7541  **/
7542 void i40e_down(struct i40e_vsi *vsi)
7543 {
7544         int i;
7545
7546         /* It is assumed that the caller of this function
7547          * sets the vsi->state __I40E_VSI_DOWN bit.
7548          */
7549         if (vsi->netdev) {
7550                 netif_carrier_off(vsi->netdev);
7551                 netif_tx_disable(vsi->netdev);
7552         }
7553         i40e_vsi_disable_irq(vsi);
7554         i40e_vsi_stop_rings(vsi);
7555         if (vsi->type == I40E_VSI_MAIN &&
7556            (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
7557             vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
7558                 i40e_force_link_state(vsi->back, false);
7559         i40e_napi_disable_all(vsi);
7560
7561         for (i = 0; i < vsi->num_queue_pairs; i++) {
7562                 i40e_clean_tx_ring(vsi->tx_rings[i]);
7563                 if (i40e_enabled_xdp_vsi(vsi)) {
7564                         /* Make sure that in-progress ndo_xdp_xmit and
7565                          * ndo_xsk_wakeup calls are completed.
7566                          */
7567                         synchronize_rcu();
7568                         i40e_clean_tx_ring(vsi->xdp_rings[i]);
7569                 }
7570                 i40e_clean_rx_ring(vsi->rx_rings[i]);
7571         }
7572
7573 }
7574
7575 /**
7576  * i40e_validate_mqprio_qopt- validate queue mapping info
7577  * @vsi: the VSI being configured
7578  * @mqprio_qopt: queue parametrs
7579  **/
7580 static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
7581                                      struct tc_mqprio_qopt_offload *mqprio_qopt)
7582 {
7583         u64 sum_max_rate = 0;
7584         u64 max_rate = 0;
7585         int i;
7586
7587         if (mqprio_qopt->qopt.offset[0] != 0 ||
7588             mqprio_qopt->qopt.num_tc < 1 ||
7589             mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
7590                 return -EINVAL;
7591         for (i = 0; ; i++) {
7592                 if (!mqprio_qopt->qopt.count[i])
7593                         return -EINVAL;
7594                 if (mqprio_qopt->min_rate[i]) {
7595                         dev_err(&vsi->back->pdev->dev,
7596                                 "Invalid min tx rate (greater than 0) specified\n");
7597                         return -EINVAL;
7598                 }
7599                 max_rate = mqprio_qopt->max_rate[i];
7600                 do_div(max_rate, I40E_BW_MBPS_DIVISOR);
7601                 sum_max_rate += max_rate;
7602
7603                 if (i >= mqprio_qopt->qopt.num_tc - 1)
7604                         break;
7605                 if (mqprio_qopt->qopt.offset[i + 1] !=
7606                     (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
7607                         return -EINVAL;
7608         }
7609         if (vsi->num_queue_pairs <
7610             (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
7611                 dev_err(&vsi->back->pdev->dev,
7612                         "Failed to create traffic channel, insufficient number of queues.\n");
7613                 return -EINVAL;
7614         }
7615         if (sum_max_rate > i40e_get_link_speed(vsi)) {
7616                 dev_err(&vsi->back->pdev->dev,
7617                         "Invalid max tx rate specified\n");
7618                 return -EINVAL;
7619         }
7620         return 0;
7621 }
7622
7623 /**
7624  * i40e_vsi_set_default_tc_config - set default values for tc configuration
7625  * @vsi: the VSI being configured
7626  **/
7627 static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
7628 {
7629         u16 qcount;
7630         int i;
7631
7632         /* Only TC0 is enabled */
7633         vsi->tc_config.numtc = 1;
7634         vsi->tc_config.enabled_tc = 1;
7635         qcount = min_t(int, vsi->alloc_queue_pairs,
7636                        i40e_pf_get_max_q_per_tc(vsi->back));
7637         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
7638                 /* For the TC that is not enabled set the offset to default
7639                  * queue and allocate one queue for the given TC.
7640                  */
7641                 vsi->tc_config.tc_info[i].qoffset = 0;
7642                 if (i == 0)
7643                         vsi->tc_config.tc_info[i].qcount = qcount;
7644                 else
7645                         vsi->tc_config.tc_info[i].qcount = 1;
7646                 vsi->tc_config.tc_info[i].netdev_tc = 0;
7647         }
7648 }
7649
7650 /**
7651  * i40e_del_macvlan_filter
7652  * @hw: pointer to the HW structure
7653  * @seid: seid of the channel VSI
7654  * @macaddr: the mac address to apply as a filter
7655  * @aq_err: store the admin Q error
7656  *
7657  * This function deletes a mac filter on the channel VSI which serves as the
7658  * macvlan. Returns 0 on success.
7659  **/
7660 static i40e_status i40e_del_macvlan_filter(struct i40e_hw *hw, u16 seid,
7661                                            const u8 *macaddr, int *aq_err)
7662 {
7663         struct i40e_aqc_remove_macvlan_element_data element;
7664         i40e_status status;
7665
7666         memset(&element, 0, sizeof(element));
7667         ether_addr_copy(element.mac_addr, macaddr);
7668         element.vlan_tag = 0;
7669         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7670         status = i40e_aq_remove_macvlan(hw, seid, &element, 1, NULL);
7671         *aq_err = hw->aq.asq_last_status;
7672
7673         return status;
7674 }
7675
7676 /**
7677  * i40e_add_macvlan_filter
7678  * @hw: pointer to the HW structure
7679  * @seid: seid of the channel VSI
7680  * @macaddr: the mac address to apply as a filter
7681  * @aq_err: store the admin Q error
7682  *
7683  * This function adds a mac filter on the channel VSI which serves as the
7684  * macvlan. Returns 0 on success.
7685  **/
7686 static i40e_status i40e_add_macvlan_filter(struct i40e_hw *hw, u16 seid,
7687                                            const u8 *macaddr, int *aq_err)
7688 {
7689         struct i40e_aqc_add_macvlan_element_data element;
7690         i40e_status status;
7691         u16 cmd_flags = 0;
7692
7693         ether_addr_copy(element.mac_addr, macaddr);
7694         element.vlan_tag = 0;
7695         element.queue_number = 0;
7696         element.match_method = I40E_AQC_MM_ERR_NO_RES;
7697         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
7698         element.flags = cpu_to_le16(cmd_flags);
7699         status = i40e_aq_add_macvlan(hw, seid, &element, 1, NULL);
7700         *aq_err = hw->aq.asq_last_status;
7701
7702         return status;
7703 }
7704
7705 /**
7706  * i40e_reset_ch_rings - Reset the queue contexts in a channel
7707  * @vsi: the VSI we want to access
7708  * @ch: the channel we want to access
7709  */
7710 static void i40e_reset_ch_rings(struct i40e_vsi *vsi, struct i40e_channel *ch)
7711 {
7712         struct i40e_ring *tx_ring, *rx_ring;
7713         u16 pf_q;
7714         int i;
7715
7716         for (i = 0; i < ch->num_queue_pairs; i++) {
7717                 pf_q = ch->base_queue + i;
7718                 tx_ring = vsi->tx_rings[pf_q];
7719                 tx_ring->ch = NULL;
7720                 rx_ring = vsi->rx_rings[pf_q];
7721                 rx_ring->ch = NULL;
7722         }
7723 }
7724
7725 /**
7726  * i40e_free_macvlan_channels
7727  * @vsi: the VSI we want to access
7728  *
7729  * This function frees the Qs of the channel VSI from
7730  * the stack and also deletes the channel VSIs which
7731  * serve as macvlans.
7732  */
7733 static void i40e_free_macvlan_channels(struct i40e_vsi *vsi)
7734 {
7735         struct i40e_channel *ch, *ch_tmp;
7736         int ret;
7737
7738         if (list_empty(&vsi->macvlan_list))
7739                 return;
7740
7741         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7742                 struct i40e_vsi *parent_vsi;
7743
7744                 if (i40e_is_channel_macvlan(ch)) {
7745                         i40e_reset_ch_rings(vsi, ch);
7746                         clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7747                         netdev_unbind_sb_channel(vsi->netdev, ch->fwd->netdev);
7748                         netdev_set_sb_channel(ch->fwd->netdev, 0);
7749                         kfree(ch->fwd);
7750                         ch->fwd = NULL;
7751                 }
7752
7753                 list_del(&ch->list);
7754                 parent_vsi = ch->parent_vsi;
7755                 if (!parent_vsi || !ch->initialized) {
7756                         kfree(ch);
7757                         continue;
7758                 }
7759
7760                 /* remove the VSI */
7761                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
7762                                              NULL);
7763                 if (ret)
7764                         dev_err(&vsi->back->pdev->dev,
7765                                 "unable to remove channel (%d) for parent VSI(%d)\n",
7766                                 ch->seid, parent_vsi->seid);
7767                 kfree(ch);
7768         }
7769         vsi->macvlan_cnt = 0;
7770 }
7771
7772 /**
7773  * i40e_fwd_ring_up - bring the macvlan device up
7774  * @vsi: the VSI we want to access
7775  * @vdev: macvlan netdevice
7776  * @fwd: the private fwd structure
7777  */
7778 static int i40e_fwd_ring_up(struct i40e_vsi *vsi, struct net_device *vdev,
7779                             struct i40e_fwd_adapter *fwd)
7780 {
7781         struct i40e_channel *ch = NULL, *ch_tmp, *iter;
7782         int ret = 0, num_tc = 1,  i, aq_err;
7783         struct i40e_pf *pf = vsi->back;
7784         struct i40e_hw *hw = &pf->hw;
7785
7786         /* Go through the list and find an available channel */
7787         list_for_each_entry_safe(iter, ch_tmp, &vsi->macvlan_list, list) {
7788                 if (!i40e_is_channel_macvlan(iter)) {
7789                         iter->fwd = fwd;
7790                         /* record configuration for macvlan interface in vdev */
7791                         for (i = 0; i < num_tc; i++)
7792                                 netdev_bind_sb_channel_queue(vsi->netdev, vdev,
7793                                                              i,
7794                                                              iter->num_queue_pairs,
7795                                                              iter->base_queue);
7796                         for (i = 0; i < iter->num_queue_pairs; i++) {
7797                                 struct i40e_ring *tx_ring, *rx_ring;
7798                                 u16 pf_q;
7799
7800                                 pf_q = iter->base_queue + i;
7801
7802                                 /* Get to TX ring ptr */
7803                                 tx_ring = vsi->tx_rings[pf_q];
7804                                 tx_ring->ch = iter;
7805
7806                                 /* Get the RX ring ptr */
7807                                 rx_ring = vsi->rx_rings[pf_q];
7808                                 rx_ring->ch = iter;
7809                         }
7810                         ch = iter;
7811                         break;
7812                 }
7813         }
7814
7815         if (!ch)
7816                 return -EINVAL;
7817
7818         /* Guarantee all rings are updated before we update the
7819          * MAC address filter.
7820          */
7821         wmb();
7822
7823         /* Add a mac filter */
7824         ret = i40e_add_macvlan_filter(hw, ch->seid, vdev->dev_addr, &aq_err);
7825         if (ret) {
7826                 /* if we cannot add the MAC rule then disable the offload */
7827                 macvlan_release_l2fw_offload(vdev);
7828                 for (i = 0; i < ch->num_queue_pairs; i++) {
7829                         struct i40e_ring *rx_ring;
7830                         u16 pf_q;
7831
7832                         pf_q = ch->base_queue + i;
7833                         rx_ring = vsi->rx_rings[pf_q];
7834                         rx_ring->netdev = NULL;
7835                 }
7836                 dev_info(&pf->pdev->dev,
7837                          "Error adding mac filter on macvlan err %s, aq_err %s\n",
7838                           i40e_stat_str(hw, ret),
7839                           i40e_aq_str(hw, aq_err));
7840                 netdev_err(vdev, "L2fwd offload disabled to L2 filter error\n");
7841         }
7842
7843         return ret;
7844 }
7845
7846 /**
7847  * i40e_setup_macvlans - create the channels which will be macvlans
7848  * @vsi: the VSI we want to access
7849  * @macvlan_cnt: no. of macvlans to be setup
7850  * @qcnt: no. of Qs per macvlan
7851  * @vdev: macvlan netdevice
7852  */
7853 static int i40e_setup_macvlans(struct i40e_vsi *vsi, u16 macvlan_cnt, u16 qcnt,
7854                                struct net_device *vdev)
7855 {
7856         struct i40e_pf *pf = vsi->back;
7857         struct i40e_hw *hw = &pf->hw;
7858         struct i40e_vsi_context ctxt;
7859         u16 sections, qmap, num_qps;
7860         struct i40e_channel *ch;
7861         int i, pow, ret = 0;
7862         u8 offset = 0;
7863
7864         if (vsi->type != I40E_VSI_MAIN || !macvlan_cnt)
7865                 return -EINVAL;
7866
7867         num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
7868
7869         /* find the next higher power-of-2 of num queue pairs */
7870         pow = fls(roundup_pow_of_two(num_qps) - 1);
7871
7872         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
7873                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
7874
7875         /* Setup context bits for the main VSI */
7876         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
7877         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
7878         memset(&ctxt, 0, sizeof(ctxt));
7879         ctxt.seid = vsi->seid;
7880         ctxt.pf_num = vsi->back->hw.pf_id;
7881         ctxt.vf_num = 0;
7882         ctxt.uplink_seid = vsi->uplink_seid;
7883         ctxt.info = vsi->info;
7884         ctxt.info.tc_mapping[0] = cpu_to_le16(qmap);
7885         ctxt.info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
7886         ctxt.info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
7887         ctxt.info.valid_sections |= cpu_to_le16(sections);
7888
7889         /* Reconfigure RSS for main VSI with new max queue count */
7890         vsi->rss_size = max_t(u16, num_qps, qcnt);
7891         ret = i40e_vsi_config_rss(vsi);
7892         if (ret) {
7893                 dev_info(&pf->pdev->dev,
7894                          "Failed to reconfig RSS for num_queues (%u)\n",
7895                          vsi->rss_size);
7896                 return ret;
7897         }
7898         vsi->reconfig_rss = true;
7899         dev_dbg(&vsi->back->pdev->dev,
7900                 "Reconfigured RSS with num_queues (%u)\n", vsi->rss_size);
7901         vsi->next_base_queue = num_qps;
7902         vsi->cnt_q_avail = vsi->num_queue_pairs - num_qps;
7903
7904         /* Update the VSI after updating the VSI queue-mapping
7905          * information
7906          */
7907         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7908         if (ret) {
7909                 dev_info(&pf->pdev->dev,
7910                          "Update vsi tc config failed, err %s aq_err %s\n",
7911                          i40e_stat_str(hw, ret),
7912                          i40e_aq_str(hw, hw->aq.asq_last_status));
7913                 return ret;
7914         }
7915         /* update the local VSI info with updated queue map */
7916         i40e_vsi_update_queue_map(vsi, &ctxt);
7917         vsi->info.valid_sections = 0;
7918
7919         /* Create channels for macvlans */
7920         INIT_LIST_HEAD(&vsi->macvlan_list);
7921         for (i = 0; i < macvlan_cnt; i++) {
7922                 ch = kzalloc(sizeof(*ch), GFP_KERNEL);
7923                 if (!ch) {
7924                         ret = -ENOMEM;
7925                         goto err_free;
7926                 }
7927                 INIT_LIST_HEAD(&ch->list);
7928                 ch->num_queue_pairs = qcnt;
7929                 if (!i40e_setup_channel(pf, vsi, ch)) {
7930                         ret = -EINVAL;
7931                         kfree(ch);
7932                         goto err_free;
7933                 }
7934                 ch->parent_vsi = vsi;
7935                 vsi->cnt_q_avail -= ch->num_queue_pairs;
7936                 vsi->macvlan_cnt++;
7937                 list_add_tail(&ch->list, &vsi->macvlan_list);
7938         }
7939
7940         return ret;
7941
7942 err_free:
7943         dev_info(&pf->pdev->dev, "Failed to setup macvlans\n");
7944         i40e_free_macvlan_channels(vsi);
7945
7946         return ret;
7947 }
7948
7949 /**
7950  * i40e_fwd_add - configure macvlans
7951  * @netdev: net device to configure
7952  * @vdev: macvlan netdevice
7953  **/
7954 static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
7955 {
7956         struct i40e_netdev_priv *np = netdev_priv(netdev);
7957         u16 q_per_macvlan = 0, macvlan_cnt = 0, vectors;
7958         struct i40e_vsi *vsi = np->vsi;
7959         struct i40e_pf *pf = vsi->back;
7960         struct i40e_fwd_adapter *fwd;
7961         int avail_macvlan, ret;
7962
7963         if ((pf->flags & I40E_FLAG_DCB_ENABLED)) {
7964                 netdev_info(netdev, "Macvlans are not supported when DCB is enabled\n");
7965                 return ERR_PTR(-EINVAL);
7966         }
7967         if (i40e_is_tc_mqprio_enabled(pf)) {
7968                 netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
7969                 return ERR_PTR(-EINVAL);
7970         }
7971         if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
7972                 netdev_info(netdev, "Not enough vectors available to support macvlans\n");
7973                 return ERR_PTR(-EINVAL);
7974         }
7975
7976         /* The macvlan device has to be a single Q device so that the
7977          * tc_to_txq field can be reused to pick the tx queue.
7978          */
7979         if (netif_is_multiqueue(vdev))
7980                 return ERR_PTR(-ERANGE);
7981
7982         if (!vsi->macvlan_cnt) {
7983                 /* reserve bit 0 for the pf device */
7984                 set_bit(0, vsi->fwd_bitmask);
7985
7986                 /* Try to reserve as many queues as possible for macvlans. First
7987                  * reserve 3/4th of max vectors, then half, then quarter and
7988                  * calculate Qs per macvlan as you go
7989                  */
7990                 vectors = pf->num_lan_msix;
7991                 if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
7992                         /* allocate 4 Qs per macvlan and 32 Qs to the PF*/
7993                         q_per_macvlan = 4;
7994                         macvlan_cnt = (vectors - 32) / 4;
7995                 } else if (vectors <= 64 && vectors > 32) {
7996                         /* allocate 2 Qs per macvlan and 16 Qs to the PF*/
7997                         q_per_macvlan = 2;
7998                         macvlan_cnt = (vectors - 16) / 2;
7999                 } else if (vectors <= 32 && vectors > 16) {
8000                         /* allocate 1 Q per macvlan and 16 Qs to the PF*/
8001                         q_per_macvlan = 1;
8002                         macvlan_cnt = vectors - 16;
8003                 } else if (vectors <= 16 && vectors > 8) {
8004                         /* allocate 1 Q per macvlan and 8 Qs to the PF */
8005                         q_per_macvlan = 1;
8006                         macvlan_cnt = vectors - 8;
8007                 } else {
8008                         /* allocate 1 Q per macvlan and 1 Q to the PF */
8009                         q_per_macvlan = 1;
8010                         macvlan_cnt = vectors - 1;
8011                 }
8012
8013                 if (macvlan_cnt == 0)
8014                         return ERR_PTR(-EBUSY);
8015
8016                 /* Quiesce VSI queues */
8017                 i40e_quiesce_vsi(vsi);
8018
8019                 /* sets up the macvlans but does not "enable" them */
8020                 ret = i40e_setup_macvlans(vsi, macvlan_cnt, q_per_macvlan,
8021                                           vdev);
8022                 if (ret)
8023                         return ERR_PTR(ret);
8024
8025                 /* Unquiesce VSI */
8026                 i40e_unquiesce_vsi(vsi);
8027         }
8028         avail_macvlan = find_first_zero_bit(vsi->fwd_bitmask,
8029                                             vsi->macvlan_cnt);
8030         if (avail_macvlan >= I40E_MAX_MACVLANS)
8031                 return ERR_PTR(-EBUSY);
8032
8033         /* create the fwd struct */
8034         fwd = kzalloc(sizeof(*fwd), GFP_KERNEL);
8035         if (!fwd)
8036                 return ERR_PTR(-ENOMEM);
8037
8038         set_bit(avail_macvlan, vsi->fwd_bitmask);
8039         fwd->bit_no = avail_macvlan;
8040         netdev_set_sb_channel(vdev, avail_macvlan);
8041         fwd->netdev = vdev;
8042
8043         if (!netif_running(netdev))
8044                 return fwd;
8045
8046         /* Set fwd ring up */
8047         ret = i40e_fwd_ring_up(vsi, vdev, fwd);
8048         if (ret) {
8049                 /* unbind the queues and drop the subordinate channel config */
8050                 netdev_unbind_sb_channel(netdev, vdev);
8051                 netdev_set_sb_channel(vdev, 0);
8052
8053                 kfree(fwd);
8054                 return ERR_PTR(-EINVAL);
8055         }
8056
8057         return fwd;
8058 }
8059
8060 /**
8061  * i40e_del_all_macvlans - Delete all the mac filters on the channels
8062  * @vsi: the VSI we want to access
8063  */
8064 static void i40e_del_all_macvlans(struct i40e_vsi *vsi)
8065 {
8066         struct i40e_channel *ch, *ch_tmp;
8067         struct i40e_pf *pf = vsi->back;
8068         struct i40e_hw *hw = &pf->hw;
8069         int aq_err, ret = 0;
8070
8071         if (list_empty(&vsi->macvlan_list))
8072                 return;
8073
8074         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
8075                 if (i40e_is_channel_macvlan(ch)) {
8076                         ret = i40e_del_macvlan_filter(hw, ch->seid,
8077                                                       i40e_channel_mac(ch),
8078                                                       &aq_err);
8079                         if (!ret) {
8080                                 /* Reset queue contexts */
8081                                 i40e_reset_ch_rings(vsi, ch);
8082                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
8083                                 netdev_unbind_sb_channel(vsi->netdev,
8084                                                          ch->fwd->netdev);
8085                                 netdev_set_sb_channel(ch->fwd->netdev, 0);
8086                                 kfree(ch->fwd);
8087                                 ch->fwd = NULL;
8088                         }
8089                 }
8090         }
8091 }
8092
8093 /**
8094  * i40e_fwd_del - delete macvlan interfaces
8095  * @netdev: net device to configure
8096  * @vdev: macvlan netdevice
8097  */
8098 static void i40e_fwd_del(struct net_device *netdev, void *vdev)
8099 {
8100         struct i40e_netdev_priv *np = netdev_priv(netdev);
8101         struct i40e_fwd_adapter *fwd = vdev;
8102         struct i40e_channel *ch, *ch_tmp;
8103         struct i40e_vsi *vsi = np->vsi;
8104         struct i40e_pf *pf = vsi->back;
8105         struct i40e_hw *hw = &pf->hw;
8106         int aq_err, ret = 0;
8107
8108         /* Find the channel associated with the macvlan and del mac filter */
8109         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
8110                 if (i40e_is_channel_macvlan(ch) &&
8111                     ether_addr_equal(i40e_channel_mac(ch),
8112                                      fwd->netdev->dev_addr)) {
8113                         ret = i40e_del_macvlan_filter(hw, ch->seid,
8114                                                       i40e_channel_mac(ch),
8115                                                       &aq_err);
8116                         if (!ret) {
8117                                 /* Reset queue contexts */
8118                                 i40e_reset_ch_rings(vsi, ch);
8119                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
8120                                 netdev_unbind_sb_channel(netdev, fwd->netdev);
8121                                 netdev_set_sb_channel(fwd->netdev, 0);
8122                                 kfree(ch->fwd);
8123                                 ch->fwd = NULL;
8124                         } else {
8125                                 dev_info(&pf->pdev->dev,
8126                                          "Error deleting mac filter on macvlan err %s, aq_err %s\n",
8127                                           i40e_stat_str(hw, ret),
8128                                           i40e_aq_str(hw, aq_err));
8129                         }
8130                         break;
8131                 }
8132         }
8133 }
8134
8135 /**
8136  * i40e_setup_tc - configure multiple traffic classes
8137  * @netdev: net device to configure
8138  * @type_data: tc offload data
8139  **/
8140 static int i40e_setup_tc(struct net_device *netdev, void *type_data)
8141 {
8142         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
8143         struct i40e_netdev_priv *np = netdev_priv(netdev);
8144         struct i40e_vsi *vsi = np->vsi;
8145         struct i40e_pf *pf = vsi->back;
8146         u8 enabled_tc = 0, num_tc, hw;
8147         bool need_reset = false;
8148         int old_queue_pairs;
8149         int ret = -EINVAL;
8150         u16 mode;
8151         int i;
8152
8153         old_queue_pairs = vsi->num_queue_pairs;
8154         num_tc = mqprio_qopt->qopt.num_tc;
8155         hw = mqprio_qopt->qopt.hw;
8156         mode = mqprio_qopt->mode;
8157         if (!hw) {
8158                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
8159                 memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
8160                 goto config_tc;
8161         }
8162
8163         /* Check if MFP enabled */
8164         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
8165                 netdev_info(netdev,
8166                             "Configuring TC not supported in MFP mode\n");
8167                 return ret;
8168         }
8169         switch (mode) {
8170         case TC_MQPRIO_MODE_DCB:
8171                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
8172
8173                 /* Check if DCB enabled to continue */
8174                 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
8175                         netdev_info(netdev,
8176                                     "DCB is not enabled for adapter\n");
8177                         return ret;
8178                 }
8179
8180                 /* Check whether tc count is within enabled limit */
8181                 if (num_tc > i40e_pf_get_num_tc(pf)) {
8182                         netdev_info(netdev,
8183                                     "TC count greater than enabled on link for adapter\n");
8184                         return ret;
8185                 }
8186                 break;
8187         case TC_MQPRIO_MODE_CHANNEL:
8188                 if (pf->flags & I40E_FLAG_DCB_ENABLED) {
8189                         netdev_info(netdev,
8190                                     "Full offload of TC Mqprio options is not supported when DCB is enabled\n");
8191                         return ret;
8192                 }
8193                 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8194                         return ret;
8195                 ret = i40e_validate_mqprio_qopt(vsi, mqprio_qopt);
8196                 if (ret)
8197                         return ret;
8198                 memcpy(&vsi->mqprio_qopt, mqprio_qopt,
8199                        sizeof(*mqprio_qopt));
8200                 pf->flags |= I40E_FLAG_TC_MQPRIO;
8201                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8202                 break;
8203         default:
8204                 return -EINVAL;
8205         }
8206
8207 config_tc:
8208         /* Generate TC map for number of tc requested */
8209         for (i = 0; i < num_tc; i++)
8210                 enabled_tc |= BIT(i);
8211
8212         /* Requesting same TC configuration as already enabled */
8213         if (enabled_tc == vsi->tc_config.enabled_tc &&
8214             mode != TC_MQPRIO_MODE_CHANNEL)
8215                 return 0;
8216
8217         /* Quiesce VSI queues */
8218         i40e_quiesce_vsi(vsi);
8219
8220         if (!hw && !i40e_is_tc_mqprio_enabled(pf))
8221                 i40e_remove_queue_channels(vsi);
8222
8223         /* Configure VSI for enabled TCs */
8224         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8225         if (ret) {
8226                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
8227                             vsi->seid);
8228                 need_reset = true;
8229                 goto exit;
8230         } else if (enabled_tc &&
8231                    (!is_power_of_2(vsi->tc_config.tc_info[0].qcount))) {
8232                 netdev_info(netdev,
8233                             "Failed to create channel. Override queues (%u) not power of 2\n",
8234                             vsi->tc_config.tc_info[0].qcount);
8235                 ret = -EINVAL;
8236                 need_reset = true;
8237                 goto exit;
8238         }
8239
8240         dev_info(&vsi->back->pdev->dev,
8241                  "Setup channel (id:%u) utilizing num_queues %d\n",
8242                  vsi->seid, vsi->tc_config.tc_info[0].qcount);
8243
8244         if (i40e_is_tc_mqprio_enabled(pf)) {
8245                 if (vsi->mqprio_qopt.max_rate[0]) {
8246                         u64 max_tx_rate = i40e_bw_bytes_to_mbits(vsi,
8247                                                   vsi->mqprio_qopt.max_rate[0]);
8248
8249                         ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
8250                         if (!ret) {
8251                                 u64 credits = max_tx_rate;
8252
8253                                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
8254                                 dev_dbg(&vsi->back->pdev->dev,
8255                                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
8256                                         max_tx_rate,
8257                                         credits,
8258                                         vsi->seid);
8259                         } else {
8260                                 need_reset = true;
8261                                 goto exit;
8262                         }
8263                 }
8264                 ret = i40e_configure_queue_channels(vsi);
8265                 if (ret) {
8266                         vsi->num_queue_pairs = old_queue_pairs;
8267                         netdev_info(netdev,
8268                                     "Failed configuring queue channels\n");
8269                         need_reset = true;
8270                         goto exit;
8271                 }
8272         }
8273
8274 exit:
8275         /* Reset the configuration data to defaults, only TC0 is enabled */
8276         if (need_reset) {
8277                 i40e_vsi_set_default_tc_config(vsi);
8278                 need_reset = false;
8279         }
8280
8281         /* Unquiesce VSI */
8282         i40e_unquiesce_vsi(vsi);
8283         return ret;
8284 }
8285
8286 /**
8287  * i40e_set_cld_element - sets cloud filter element data
8288  * @filter: cloud filter rule
8289  * @cld: ptr to cloud filter element data
8290  *
8291  * This is helper function to copy data into cloud filter element
8292  **/
8293 static inline void
8294 i40e_set_cld_element(struct i40e_cloud_filter *filter,
8295                      struct i40e_aqc_cloud_filters_element_data *cld)
8296 {
8297         u32 ipa;
8298         int i;
8299
8300         memset(cld, 0, sizeof(*cld));
8301         ether_addr_copy(cld->outer_mac, filter->dst_mac);
8302         ether_addr_copy(cld->inner_mac, filter->src_mac);
8303
8304         if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
8305                 return;
8306
8307         if (filter->n_proto == ETH_P_IPV6) {
8308 #define IPV6_MAX_INDEX  (ARRAY_SIZE(filter->dst_ipv6) - 1)
8309                 for (i = 0; i < ARRAY_SIZE(filter->dst_ipv6); i++) {
8310                         ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
8311
8312                         *(__le32 *)&cld->ipaddr.raw_v6.data[i * 2] = cpu_to_le32(ipa);
8313                 }
8314         } else {
8315                 ipa = be32_to_cpu(filter->dst_ipv4);
8316
8317                 memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
8318         }
8319
8320         cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));
8321
8322         /* tenant_id is not supported by FW now, once the support is enabled
8323          * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
8324          */
8325         if (filter->tenant_id)
8326                 return;
8327 }
8328
8329 /**
8330  * i40e_add_del_cloud_filter - Add/del cloud filter
8331  * @vsi: pointer to VSI
8332  * @filter: cloud filter rule
8333  * @add: if true, add, if false, delete
8334  *
8335  * Add or delete a cloud filter for a specific flow spec.
8336  * Returns 0 if the filter were successfully added.
8337  **/
8338 int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
8339                               struct i40e_cloud_filter *filter, bool add)
8340 {
8341         struct i40e_aqc_cloud_filters_element_data cld_filter;
8342         struct i40e_pf *pf = vsi->back;
8343         int ret;
8344         static const u16 flag_table[128] = {
8345                 [I40E_CLOUD_FILTER_FLAGS_OMAC]  =
8346                         I40E_AQC_ADD_CLOUD_FILTER_OMAC,
8347                 [I40E_CLOUD_FILTER_FLAGS_IMAC]  =
8348                         I40E_AQC_ADD_CLOUD_FILTER_IMAC,
8349                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
8350                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
8351                 [I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
8352                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
8353                 [I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
8354                         I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
8355                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
8356                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
8357                 [I40E_CLOUD_FILTER_FLAGS_IIP] =
8358                         I40E_AQC_ADD_CLOUD_FILTER_IIP,
8359         };
8360
8361         if (filter->flags >= ARRAY_SIZE(flag_table))
8362                 return I40E_ERR_CONFIG;
8363
8364         memset(&cld_filter, 0, sizeof(cld_filter));
8365
8366         /* copy element needed to add cloud filter from filter */
8367         i40e_set_cld_element(filter, &cld_filter);
8368
8369         if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
8370                 cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
8371                                              I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);
8372
8373         if (filter->n_proto == ETH_P_IPV6)
8374                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
8375                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
8376         else
8377                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
8378                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
8379
8380         if (add)
8381                 ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
8382                                                 &cld_filter, 1);
8383         else
8384                 ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
8385                                                 &cld_filter, 1);
8386         if (ret)
8387                 dev_dbg(&pf->pdev->dev,
8388                         "Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
8389                         add ? "add" : "delete", filter->dst_port, ret,
8390                         pf->hw.aq.asq_last_status);
8391         else
8392                 dev_info(&pf->pdev->dev,
8393                          "%s cloud filter for VSI: %d\n",
8394                          add ? "Added" : "Deleted", filter->seid);
8395         return ret;
8396 }
8397
8398 /**
8399  * i40e_add_del_cloud_filter_big_buf - Add/del cloud filter using big_buf
8400  * @vsi: pointer to VSI
8401  * @filter: cloud filter rule
8402  * @add: if true, add, if false, delete
8403  *
8404  * Add or delete a cloud filter for a specific flow spec using big buffer.
8405  * Returns 0 if the filter were successfully added.
8406  **/
8407 int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
8408                                       struct i40e_cloud_filter *filter,
8409                                       bool add)
8410 {
8411         struct i40e_aqc_cloud_filters_element_bb cld_filter;
8412         struct i40e_pf *pf = vsi->back;
8413         int ret;
8414
8415         /* Both (src/dst) valid mac_addr are not supported */
8416         if ((is_valid_ether_addr(filter->dst_mac) &&
8417              is_valid_ether_addr(filter->src_mac)) ||
8418             (is_multicast_ether_addr(filter->dst_mac) &&
8419              is_multicast_ether_addr(filter->src_mac)))
8420                 return -EOPNOTSUPP;
8421
8422         /* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
8423          * ports are not supported via big buffer now.
8424          */
8425         if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
8426                 return -EOPNOTSUPP;
8427
8428         /* adding filter using src_port/src_ip is not supported at this stage */
8429         if (filter->src_port ||
8430             (filter->src_ipv4 && filter->n_proto != ETH_P_IPV6) ||
8431             !ipv6_addr_any(&filter->ip.v6.src_ip6))
8432                 return -EOPNOTSUPP;
8433
8434         memset(&cld_filter, 0, sizeof(cld_filter));
8435
8436         /* copy element needed to add cloud filter from filter */
8437         i40e_set_cld_element(filter, &cld_filter.element);
8438
8439         if (is_valid_ether_addr(filter->dst_mac) ||
8440             is_valid_ether_addr(filter->src_mac) ||
8441             is_multicast_ether_addr(filter->dst_mac) ||
8442             is_multicast_ether_addr(filter->src_mac)) {
8443                 /* MAC + IP : unsupported mode */
8444                 if (filter->dst_ipv4)
8445                         return -EOPNOTSUPP;
8446
8447                 /* since we validated that L4 port must be valid before
8448                  * we get here, start with respective "flags" value
8449                  * and update if vlan is present or not
8450                  */
8451                 cld_filter.element.flags =
8452                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);
8453
8454                 if (filter->vlan_id) {
8455                         cld_filter.element.flags =
8456                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
8457                 }
8458
8459         } else if ((filter->dst_ipv4 && filter->n_proto != ETH_P_IPV6) ||
8460                    !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
8461                 cld_filter.element.flags =
8462                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
8463                 if (filter->n_proto == ETH_P_IPV6)
8464                         cld_filter.element.flags |=
8465                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
8466                 else
8467                         cld_filter.element.flags |=
8468                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
8469         } else {
8470                 dev_err(&pf->pdev->dev,
8471                         "either mac or ip has to be valid for cloud filter\n");
8472                 return -EINVAL;
8473         }
8474
8475         /* Now copy L4 port in Byte 6..7 in general fields */
8476         cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
8477                                                 be16_to_cpu(filter->dst_port);
8478
8479         if (add) {
8480                 /* Validate current device switch mode, change if necessary */
8481                 ret = i40e_validate_and_set_switch_mode(vsi);
8482                 if (ret) {
8483                         dev_err(&pf->pdev->dev,
8484                                 "failed to set switch mode, ret %d\n",
8485                                 ret);
8486                         return ret;
8487                 }
8488
8489                 ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
8490                                                    &cld_filter, 1);
8491         } else {
8492                 ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
8493                                                    &cld_filter, 1);
8494         }
8495
8496         if (ret)
8497                 dev_dbg(&pf->pdev->dev,
8498                         "Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
8499                         add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
8500         else
8501                 dev_info(&pf->pdev->dev,
8502                          "%s cloud filter for VSI: %d, L4 port: %d\n",
8503                          add ? "add" : "delete", filter->seid,
8504                          ntohs(filter->dst_port));
8505         return ret;
8506 }
8507
8508 /**
8509  * i40e_parse_cls_flower - Parse tc flower filters provided by kernel
8510  * @vsi: Pointer to VSI
8511  * @f: Pointer to struct flow_cls_offload
8512  * @filter: Pointer to cloud filter structure
8513  *
8514  **/
8515 static int i40e_parse_cls_flower(struct i40e_vsi *vsi,
8516                                  struct flow_cls_offload *f,
8517                                  struct i40e_cloud_filter *filter)
8518 {
8519         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
8520         struct flow_dissector *dissector = rule->match.dissector;
8521         u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
8522         struct i40e_pf *pf = vsi->back;
8523         u8 field_flags = 0;
8524
8525         if (dissector->used_keys &
8526             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
8527               BIT(FLOW_DISSECTOR_KEY_BASIC) |
8528               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
8529               BIT(FLOW_DISSECTOR_KEY_VLAN) |
8530               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
8531               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
8532               BIT(FLOW_DISSECTOR_KEY_PORTS) |
8533               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
8534                 dev_err(&pf->pdev->dev, "Unsupported key used: 0x%x\n",
8535                         dissector->used_keys);
8536                 return -EOPNOTSUPP;
8537         }
8538
8539         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
8540                 struct flow_match_enc_keyid match;
8541
8542                 flow_rule_match_enc_keyid(rule, &match);
8543                 if (match.mask->keyid != 0)
8544                         field_flags |= I40E_CLOUD_FIELD_TEN_ID;
8545
8546                 filter->tenant_id = be32_to_cpu(match.key->keyid);
8547         }
8548
8549         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
8550                 struct flow_match_basic match;
8551
8552                 flow_rule_match_basic(rule, &match);
8553                 n_proto_key = ntohs(match.key->n_proto);
8554                 n_proto_mask = ntohs(match.mask->n_proto);
8555
8556                 if (n_proto_key == ETH_P_ALL) {
8557                         n_proto_key = 0;
8558                         n_proto_mask = 0;
8559                 }
8560                 filter->n_proto = n_proto_key & n_proto_mask;
8561                 filter->ip_proto = match.key->ip_proto;
8562         }
8563
8564         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
8565                 struct flow_match_eth_addrs match;
8566
8567                 flow_rule_match_eth_addrs(rule, &match);
8568
8569                 /* use is_broadcast and is_zero to check for all 0xf or 0 */
8570                 if (!is_zero_ether_addr(match.mask->dst)) {
8571                         if (is_broadcast_ether_addr(match.mask->dst)) {
8572                                 field_flags |= I40E_CLOUD_FIELD_OMAC;
8573                         } else {
8574                                 dev_err(&pf->pdev->dev, "Bad ether dest mask %pM\n",
8575                                         match.mask->dst);
8576                                 return I40E_ERR_CONFIG;
8577                         }
8578                 }
8579
8580                 if (!is_zero_ether_addr(match.mask->src)) {
8581                         if (is_broadcast_ether_addr(match.mask->src)) {
8582                                 field_flags |= I40E_CLOUD_FIELD_IMAC;
8583                         } else {
8584                                 dev_err(&pf->pdev->dev, "Bad ether src mask %pM\n",
8585                                         match.mask->src);
8586                                 return I40E_ERR_CONFIG;
8587                         }
8588                 }
8589                 ether_addr_copy(filter->dst_mac, match.key->dst);
8590                 ether_addr_copy(filter->src_mac, match.key->src);
8591         }
8592
8593         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
8594                 struct flow_match_vlan match;
8595
8596                 flow_rule_match_vlan(rule, &match);
8597                 if (match.mask->vlan_id) {
8598                         if (match.mask->vlan_id == VLAN_VID_MASK) {
8599                                 field_flags |= I40E_CLOUD_FIELD_IVLAN;
8600
8601                         } else {
8602                                 dev_err(&pf->pdev->dev, "Bad vlan mask 0x%04x\n",
8603                                         match.mask->vlan_id);
8604                                 return I40E_ERR_CONFIG;
8605                         }
8606                 }
8607
8608                 filter->vlan_id = cpu_to_be16(match.key->vlan_id);
8609         }
8610
8611         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
8612                 struct flow_match_control match;
8613
8614                 flow_rule_match_control(rule, &match);
8615                 addr_type = match.key->addr_type;
8616         }
8617
8618         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
8619                 struct flow_match_ipv4_addrs match;
8620
8621                 flow_rule_match_ipv4_addrs(rule, &match);
8622                 if (match.mask->dst) {
8623                         if (match.mask->dst == cpu_to_be32(0xffffffff)) {
8624                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8625                         } else {
8626                                 dev_err(&pf->pdev->dev, "Bad ip dst mask %pI4b\n",
8627                                         &match.mask->dst);
8628                                 return I40E_ERR_CONFIG;
8629                         }
8630                 }
8631
8632                 if (match.mask->src) {
8633                         if (match.mask->src == cpu_to_be32(0xffffffff)) {
8634                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8635                         } else {
8636                                 dev_err(&pf->pdev->dev, "Bad ip src mask %pI4b\n",
8637                                         &match.mask->src);
8638                                 return I40E_ERR_CONFIG;
8639                         }
8640                 }
8641
8642                 if (field_flags & I40E_CLOUD_FIELD_TEN_ID) {
8643                         dev_err(&pf->pdev->dev, "Tenant id not allowed for ip filter\n");
8644                         return I40E_ERR_CONFIG;
8645                 }
8646                 filter->dst_ipv4 = match.key->dst;
8647                 filter->src_ipv4 = match.key->src;
8648         }
8649
8650         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
8651                 struct flow_match_ipv6_addrs match;
8652
8653                 flow_rule_match_ipv6_addrs(rule, &match);
8654
8655                 /* src and dest IPV6 address should not be LOOPBACK
8656                  * (0:0:0:0:0:0:0:1), which can be represented as ::1
8657                  */
8658                 if (ipv6_addr_loopback(&match.key->dst) ||
8659                     ipv6_addr_loopback(&match.key->src)) {
8660                         dev_err(&pf->pdev->dev,
8661                                 "Bad ipv6, addr is LOOPBACK\n");
8662                         return I40E_ERR_CONFIG;
8663                 }
8664                 if (!ipv6_addr_any(&match.mask->dst) ||
8665                     !ipv6_addr_any(&match.mask->src))
8666                         field_flags |= I40E_CLOUD_FIELD_IIP;
8667
8668                 memcpy(&filter->src_ipv6, &match.key->src.s6_addr32,
8669                        sizeof(filter->src_ipv6));
8670                 memcpy(&filter->dst_ipv6, &match.key->dst.s6_addr32,
8671                        sizeof(filter->dst_ipv6));
8672         }
8673
8674         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
8675                 struct flow_match_ports match;
8676
8677                 flow_rule_match_ports(rule, &match);
8678                 if (match.mask->src) {
8679                         if (match.mask->src == cpu_to_be16(0xffff)) {
8680                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8681                         } else {
8682                                 dev_err(&pf->pdev->dev, "Bad src port mask 0x%04x\n",
8683                                         be16_to_cpu(match.mask->src));
8684                                 return I40E_ERR_CONFIG;
8685                         }
8686                 }
8687
8688                 if (match.mask->dst) {
8689                         if (match.mask->dst == cpu_to_be16(0xffff)) {
8690                                 field_flags |= I40E_CLOUD_FIELD_IIP;
8691                         } else {
8692                                 dev_err(&pf->pdev->dev, "Bad dst port mask 0x%04x\n",
8693                                         be16_to_cpu(match.mask->dst));
8694                                 return I40E_ERR_CONFIG;
8695                         }
8696                 }
8697
8698                 filter->dst_port = match.key->dst;
8699                 filter->src_port = match.key->src;
8700
8701                 switch (filter->ip_proto) {
8702                 case IPPROTO_TCP:
8703                 case IPPROTO_UDP:
8704                         break;
8705                 default:
8706                         dev_err(&pf->pdev->dev,
8707                                 "Only UDP and TCP transport are supported\n");
8708                         return -EINVAL;
8709                 }
8710         }
8711         filter->flags = field_flags;
8712         return 0;
8713 }
8714
8715 /**
8716  * i40e_handle_tclass: Forward to a traffic class on the device
8717  * @vsi: Pointer to VSI
8718  * @tc: traffic class index on the device
8719  * @filter: Pointer to cloud filter structure
8720  *
8721  **/
8722 static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
8723                               struct i40e_cloud_filter *filter)
8724 {
8725         struct i40e_channel *ch, *ch_tmp;
8726
8727         /* direct to a traffic class on the same device */
8728         if (tc == 0) {
8729                 filter->seid = vsi->seid;
8730                 return 0;
8731         } else if (vsi->tc_config.enabled_tc & BIT(tc)) {
8732                 if (!filter->dst_port) {
8733                         dev_err(&vsi->back->pdev->dev,
8734                                 "Specify destination port to direct to traffic class that is not default\n");
8735                         return -EINVAL;
8736                 }
8737                 if (list_empty(&vsi->ch_list))
8738                         return -EINVAL;
8739                 list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
8740                                          list) {
8741                         if (ch->seid == vsi->tc_seid_map[tc])
8742                                 filter->seid = ch->seid;
8743                 }
8744                 return 0;
8745         }
8746         dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
8747         return -EINVAL;
8748 }
8749
8750 /**
8751  * i40e_configure_clsflower - Configure tc flower filters
8752  * @vsi: Pointer to VSI
8753  * @cls_flower: Pointer to struct flow_cls_offload
8754  *
8755  **/
8756 static int i40e_configure_clsflower(struct i40e_vsi *vsi,
8757                                     struct flow_cls_offload *cls_flower)
8758 {
8759         int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
8760         struct i40e_cloud_filter *filter = NULL;
8761         struct i40e_pf *pf = vsi->back;
8762         int err = 0;
8763
8764         if (tc < 0) {
8765                 dev_err(&vsi->back->pdev->dev, "Invalid traffic class\n");
8766                 return -EOPNOTSUPP;
8767         }
8768
8769         if (!tc) {
8770                 dev_err(&pf->pdev->dev, "Unable to add filter because of invalid destination");
8771                 return -EINVAL;
8772         }
8773
8774         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
8775             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
8776                 return -EBUSY;
8777
8778         if (pf->fdir_pf_active_filters ||
8779             (!hlist_empty(&pf->fdir_filter_list))) {
8780                 dev_err(&vsi->back->pdev->dev,
8781                         "Flow Director Sideband filters exists, turn ntuple off to configure cloud filters\n");
8782                 return -EINVAL;
8783         }
8784
8785         if (vsi->back->flags & I40E_FLAG_FD_SB_ENABLED) {
8786                 dev_err(&vsi->back->pdev->dev,
8787                         "Disable Flow Director Sideband, configuring Cloud filters via tc-flower\n");
8788                 vsi->back->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8789                 vsi->back->flags |= I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8790         }
8791
8792         filter = kzalloc(sizeof(*filter), GFP_KERNEL);
8793         if (!filter)
8794                 return -ENOMEM;
8795
8796         filter->cookie = cls_flower->cookie;
8797
8798         err = i40e_parse_cls_flower(vsi, cls_flower, filter);
8799         if (err < 0)
8800                 goto err;
8801
8802         err = i40e_handle_tclass(vsi, tc, filter);
8803         if (err < 0)
8804                 goto err;
8805
8806         /* Add cloud filter */
8807         if (filter->dst_port)
8808                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, true);
8809         else
8810                 err = i40e_add_del_cloud_filter(vsi, filter, true);
8811
8812         if (err) {
8813                 dev_err(&pf->pdev->dev, "Failed to add cloud filter, err %d\n",
8814                         err);
8815                 goto err;
8816         }
8817
8818         /* add filter to the ordered list */
8819         INIT_HLIST_NODE(&filter->cloud_node);
8820
8821         hlist_add_head(&filter->cloud_node, &pf->cloud_filter_list);
8822
8823         pf->num_cloud_filters++;
8824
8825         return err;
8826 err:
8827         kfree(filter);
8828         return err;
8829 }
8830
8831 /**
8832  * i40e_find_cloud_filter - Find the could filter in the list
8833  * @vsi: Pointer to VSI
8834  * @cookie: filter specific cookie
8835  *
8836  **/
8837 static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
8838                                                         unsigned long *cookie)
8839 {
8840         struct i40e_cloud_filter *filter = NULL;
8841         struct hlist_node *node2;
8842
8843         hlist_for_each_entry_safe(filter, node2,
8844                                   &vsi->back->cloud_filter_list, cloud_node)
8845                 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
8846                         return filter;
8847         return NULL;
8848 }
8849
8850 /**
8851  * i40e_delete_clsflower - Remove tc flower filters
8852  * @vsi: Pointer to VSI
8853  * @cls_flower: Pointer to struct flow_cls_offload
8854  *
8855  **/
8856 static int i40e_delete_clsflower(struct i40e_vsi *vsi,
8857                                  struct flow_cls_offload *cls_flower)
8858 {
8859         struct i40e_cloud_filter *filter = NULL;
8860         struct i40e_pf *pf = vsi->back;
8861         int err = 0;
8862
8863         filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);
8864
8865         if (!filter)
8866                 return -EINVAL;
8867
8868         hash_del(&filter->cloud_node);
8869
8870         if (filter->dst_port)
8871                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
8872         else
8873                 err = i40e_add_del_cloud_filter(vsi, filter, false);
8874
8875         kfree(filter);
8876         if (err) {
8877                 dev_err(&pf->pdev->dev,
8878                         "Failed to delete cloud filter, err %s\n",
8879                         i40e_stat_str(&pf->hw, err));
8880                 return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
8881         }
8882
8883         pf->num_cloud_filters--;
8884         if (!pf->num_cloud_filters)
8885                 if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8886                     !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8887                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8888                         pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8889                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8890                 }
8891         return 0;
8892 }
8893
8894 /**
8895  * i40e_setup_tc_cls_flower - flower classifier offloads
8896  * @np: net device to configure
8897  * @cls_flower: offload data
8898  **/
8899 static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
8900                                     struct flow_cls_offload *cls_flower)
8901 {
8902         struct i40e_vsi *vsi = np->vsi;
8903
8904         switch (cls_flower->command) {
8905         case FLOW_CLS_REPLACE:
8906                 return i40e_configure_clsflower(vsi, cls_flower);
8907         case FLOW_CLS_DESTROY:
8908                 return i40e_delete_clsflower(vsi, cls_flower);
8909         case FLOW_CLS_STATS:
8910                 return -EOPNOTSUPP;
8911         default:
8912                 return -EOPNOTSUPP;
8913         }
8914 }
8915
8916 static int i40e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
8917                                   void *cb_priv)
8918 {
8919         struct i40e_netdev_priv *np = cb_priv;
8920
8921         if (!tc_cls_can_offload_and_chain0(np->vsi->netdev, type_data))
8922                 return -EOPNOTSUPP;
8923
8924         switch (type) {
8925         case TC_SETUP_CLSFLOWER:
8926                 return i40e_setup_tc_cls_flower(np, type_data);
8927
8928         default:
8929                 return -EOPNOTSUPP;
8930         }
8931 }
8932
8933 static LIST_HEAD(i40e_block_cb_list);
8934
8935 static int __i40e_setup_tc(struct net_device *netdev, enum tc_setup_type type,
8936                            void *type_data)
8937 {
8938         struct i40e_netdev_priv *np = netdev_priv(netdev);
8939
8940         switch (type) {
8941         case TC_SETUP_QDISC_MQPRIO:
8942                 return i40e_setup_tc(netdev, type_data);
8943         case TC_SETUP_BLOCK:
8944                 return flow_block_cb_setup_simple(type_data,
8945                                                   &i40e_block_cb_list,
8946                                                   i40e_setup_tc_block_cb,
8947                                                   np, np, true);
8948         default:
8949                 return -EOPNOTSUPP;
8950         }
8951 }
8952
8953 /**
8954  * i40e_open - Called when a network interface is made active
8955  * @netdev: network interface device structure
8956  *
8957  * The open entry point is called when a network interface is made
8958  * active by the system (IFF_UP).  At this point all resources needed
8959  * for transmit and receive operations are allocated, the interrupt
8960  * handler is registered with the OS, the netdev watchdog subtask is
8961  * enabled, and the stack is notified that the interface is ready.
8962  *
8963  * Returns 0 on success, negative value on failure
8964  **/
8965 int i40e_open(struct net_device *netdev)
8966 {
8967         struct i40e_netdev_priv *np = netdev_priv(netdev);
8968         struct i40e_vsi *vsi = np->vsi;
8969         struct i40e_pf *pf = vsi->back;
8970         int err;
8971
8972         /* disallow open during test or if eeprom is broken */
8973         if (test_bit(__I40E_TESTING, pf->state) ||
8974             test_bit(__I40E_BAD_EEPROM, pf->state))
8975                 return -EBUSY;
8976
8977         netif_carrier_off(netdev);
8978
8979         if (i40e_force_link_state(pf, true))
8980                 return -EAGAIN;
8981
8982         err = i40e_vsi_open(vsi);
8983         if (err)
8984                 return err;
8985
8986         /* configure global TSO hardware offload settings */
8987         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
8988                                                        TCP_FLAG_FIN) >> 16);
8989         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
8990                                                        TCP_FLAG_FIN |
8991                                                        TCP_FLAG_CWR) >> 16);
8992         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
8993         udp_tunnel_get_rx_info(netdev);
8994
8995         return 0;
8996 }
8997
8998 /**
8999  * i40e_netif_set_realnum_tx_rx_queues - Update number of tx/rx queues
9000  * @vsi: vsi structure
9001  *
9002  * This updates netdev's number of tx/rx queues
9003  *
9004  * Returns status of setting tx/rx queues
9005  **/
9006 static int i40e_netif_set_realnum_tx_rx_queues(struct i40e_vsi *vsi)
9007 {
9008         int ret;
9009
9010         ret = netif_set_real_num_rx_queues(vsi->netdev,
9011                                            vsi->num_queue_pairs);
9012         if (ret)
9013                 return ret;
9014
9015         return netif_set_real_num_tx_queues(vsi->netdev,
9016                                             vsi->num_queue_pairs);
9017 }
9018
9019 /**
9020  * i40e_vsi_open -
9021  * @vsi: the VSI to open
9022  *
9023  * Finish initialization of the VSI.
9024  *
9025  * Returns 0 on success, negative value on failure
9026  *
9027  * Note: expects to be called while under rtnl_lock()
9028  **/
9029 int i40e_vsi_open(struct i40e_vsi *vsi)
9030 {
9031         struct i40e_pf *pf = vsi->back;
9032         char int_name[I40E_INT_NAME_STR_LEN];
9033         int err;
9034
9035         /* allocate descriptors */
9036         err = i40e_vsi_setup_tx_resources(vsi);
9037         if (err)
9038                 goto err_setup_tx;
9039         err = i40e_vsi_setup_rx_resources(vsi);
9040         if (err)
9041                 goto err_setup_rx;
9042
9043         err = i40e_vsi_configure(vsi);
9044         if (err)
9045                 goto err_setup_rx;
9046
9047         if (vsi->netdev) {
9048                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
9049                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
9050                 err = i40e_vsi_request_irq(vsi, int_name);
9051                 if (err)
9052                         goto err_setup_rx;
9053
9054                 /* Notify the stack of the actual queue counts. */
9055                 err = i40e_netif_set_realnum_tx_rx_queues(vsi);
9056                 if (err)
9057                         goto err_set_queues;
9058
9059         } else if (vsi->type == I40E_VSI_FDIR) {
9060                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
9061                          dev_driver_string(&pf->pdev->dev),
9062                          dev_name(&pf->pdev->dev));
9063                 err = i40e_vsi_request_irq(vsi, int_name);
9064                 if (err)
9065                         goto err_setup_rx;
9066
9067         } else {
9068                 err = -EINVAL;
9069                 goto err_setup_rx;
9070         }
9071
9072         err = i40e_up_complete(vsi);
9073         if (err)
9074                 goto err_up_complete;
9075
9076         return 0;
9077
9078 err_up_complete:
9079         i40e_down(vsi);
9080 err_set_queues:
9081         i40e_vsi_free_irq(vsi);
9082 err_setup_rx:
9083         i40e_vsi_free_rx_resources(vsi);
9084 err_setup_tx:
9085         i40e_vsi_free_tx_resources(vsi);
9086         if (vsi == pf->vsi[pf->lan_vsi])
9087                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
9088
9089         return err;
9090 }
9091
9092 /**
9093  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
9094  * @pf: Pointer to PF
9095  *
9096  * This function destroys the hlist where all the Flow Director
9097  * filters were saved.
9098  **/
9099 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
9100 {
9101         struct i40e_fdir_filter *filter;
9102         struct i40e_flex_pit *pit_entry, *tmp;
9103         struct hlist_node *node2;
9104
9105         hlist_for_each_entry_safe(filter, node2,
9106                                   &pf->fdir_filter_list, fdir_node) {
9107                 hlist_del(&filter->fdir_node);
9108                 kfree(filter);
9109         }
9110
9111         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
9112                 list_del(&pit_entry->list);
9113                 kfree(pit_entry);
9114         }
9115         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
9116
9117         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
9118                 list_del(&pit_entry->list);
9119                 kfree(pit_entry);
9120         }
9121         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
9122
9123         pf->fdir_pf_active_filters = 0;
9124         i40e_reset_fdir_filter_cnt(pf);
9125
9126         /* Reprogram the default input set for TCP/IPv4 */
9127         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
9128                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9129                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9130
9131         /* Reprogram the default input set for TCP/IPv6 */
9132         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_TCP,
9133                                 I40E_L3_V6_SRC_MASK | I40E_L3_V6_DST_MASK |
9134                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9135
9136         /* Reprogram the default input set for UDP/IPv4 */
9137         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
9138                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9139                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9140
9141         /* Reprogram the default input set for UDP/IPv6 */
9142         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_UDP,
9143                                 I40E_L3_V6_SRC_MASK | I40E_L3_V6_DST_MASK |
9144                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9145
9146         /* Reprogram the default input set for SCTP/IPv4 */
9147         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
9148                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9149                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9150
9151         /* Reprogram the default input set for SCTP/IPv6 */
9152         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_SCTP,
9153                                 I40E_L3_V6_SRC_MASK | I40E_L3_V6_DST_MASK |
9154                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9155
9156         /* Reprogram the default input set for Other/IPv4 */
9157         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
9158                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9159
9160         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
9161                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9162
9163         /* Reprogram the default input set for Other/IPv6 */
9164         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV6_OTHER,
9165                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9166
9167         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV6,
9168                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
9169 }
9170
9171 /**
9172  * i40e_cloud_filter_exit - Cleans up the cloud filters
9173  * @pf: Pointer to PF
9174  *
9175  * This function destroys the hlist where all the cloud filters
9176  * were saved.
9177  **/
9178 static void i40e_cloud_filter_exit(struct i40e_pf *pf)
9179 {
9180         struct i40e_cloud_filter *cfilter;
9181         struct hlist_node *node;
9182
9183         hlist_for_each_entry_safe(cfilter, node,
9184                                   &pf->cloud_filter_list, cloud_node) {
9185                 hlist_del(&cfilter->cloud_node);
9186                 kfree(cfilter);
9187         }
9188         pf->num_cloud_filters = 0;
9189
9190         if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
9191             !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
9192                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
9193                 pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
9194                 pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
9195         }
9196 }
9197
9198 /**
9199  * i40e_close - Disables a network interface
9200  * @netdev: network interface device structure
9201  *
9202  * The close entry point is called when an interface is de-activated
9203  * by the OS.  The hardware is still under the driver's control, but
9204  * this netdev interface is disabled.
9205  *
9206  * Returns 0, this is not allowed to fail
9207  **/
9208 int i40e_close(struct net_device *netdev)
9209 {
9210         struct i40e_netdev_priv *np = netdev_priv(netdev);
9211         struct i40e_vsi *vsi = np->vsi;
9212
9213         i40e_vsi_close(vsi);
9214
9215         return 0;
9216 }
9217
9218 /**
9219  * i40e_do_reset - Start a PF or Core Reset sequence
9220  * @pf: board private structure
9221  * @reset_flags: which reset is requested
9222  * @lock_acquired: indicates whether or not the lock has been acquired
9223  * before this function was called.
9224  *
9225  * The essential difference in resets is that the PF Reset
9226  * doesn't clear the packet buffers, doesn't reset the PE
9227  * firmware, and doesn't bother the other PFs on the chip.
9228  **/
9229 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
9230 {
9231         u32 val;
9232
9233         /* do the biggest reset indicated */
9234         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
9235
9236                 /* Request a Global Reset
9237                  *
9238                  * This will start the chip's countdown to the actual full
9239                  * chip reset event, and a warning interrupt to be sent
9240                  * to all PFs, including the requestor.  Our handler
9241                  * for the warning interrupt will deal with the shutdown
9242                  * and recovery of the switch setup.
9243                  */
9244                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
9245                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9246                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
9247                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
9248
9249         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
9250
9251                 /* Request a Core Reset
9252                  *
9253                  * Same as Global Reset, except does *not* include the MAC/PHY
9254                  */
9255                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
9256                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9257                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
9258                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
9259                 i40e_flush(&pf->hw);
9260
9261         } else if (reset_flags & I40E_PF_RESET_FLAG) {
9262
9263                 /* Request a PF Reset
9264                  *
9265                  * Resets only the PF-specific registers
9266                  *
9267                  * This goes directly to the tear-down and rebuild of
9268                  * the switch, since we need to do all the recovery as
9269                  * for the Core Reset.
9270                  */
9271                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
9272                 i40e_handle_reset_warning(pf, lock_acquired);
9273
9274         } else if (reset_flags & I40E_PF_RESET_AND_REBUILD_FLAG) {
9275                 /* Request a PF Reset
9276                  *
9277                  * Resets PF and reinitializes PFs VSI.
9278                  */
9279                 i40e_prep_for_reset(pf);
9280                 i40e_reset_and_rebuild(pf, true, lock_acquired);
9281                 dev_info(&pf->pdev->dev,
9282                          pf->flags & I40E_FLAG_DISABLE_FW_LLDP ?
9283                          "FW LLDP is disabled\n" :
9284                          "FW LLDP is enabled\n");
9285
9286         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
9287                 int v;
9288
9289                 /* Find the VSI(s) that requested a re-init */
9290                 dev_info(&pf->pdev->dev,
9291                          "VSI reinit requested\n");
9292                 for (v = 0; v < pf->num_alloc_vsi; v++) {
9293                         struct i40e_vsi *vsi = pf->vsi[v];
9294
9295                         if (vsi != NULL &&
9296                             test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
9297                                                vsi->state))
9298                                 i40e_vsi_reinit_locked(pf->vsi[v]);
9299                 }
9300         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
9301                 int v;
9302
9303                 /* Find the VSI(s) that needs to be brought down */
9304                 dev_info(&pf->pdev->dev, "VSI down requested\n");
9305                 for (v = 0; v < pf->num_alloc_vsi; v++) {
9306                         struct i40e_vsi *vsi = pf->vsi[v];
9307
9308                         if (vsi != NULL &&
9309                             test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
9310                                                vsi->state)) {
9311                                 set_bit(__I40E_VSI_DOWN, vsi->state);
9312                                 i40e_down(vsi);
9313                         }
9314                 }
9315         } else {
9316                 dev_info(&pf->pdev->dev,
9317                          "bad reset request 0x%08x\n", reset_flags);
9318         }
9319 }
9320
9321 #ifdef CONFIG_I40E_DCB
9322 /**
9323  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
9324  * @pf: board private structure
9325  * @old_cfg: current DCB config
9326  * @new_cfg: new DCB config
9327  **/
9328 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
9329                             struct i40e_dcbx_config *old_cfg,
9330                             struct i40e_dcbx_config *new_cfg)
9331 {
9332         bool need_reconfig = false;
9333
9334         /* Check if ETS configuration has changed */
9335         if (memcmp(&new_cfg->etscfg,
9336                    &old_cfg->etscfg,
9337                    sizeof(new_cfg->etscfg))) {
9338                 /* If Priority Table has changed reconfig is needed */
9339                 if (memcmp(&new_cfg->etscfg.prioritytable,
9340                            &old_cfg->etscfg.prioritytable,
9341                            sizeof(new_cfg->etscfg.prioritytable))) {
9342                         need_reconfig = true;
9343                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
9344                 }
9345
9346                 if (memcmp(&new_cfg->etscfg.tcbwtable,
9347                            &old_cfg->etscfg.tcbwtable,
9348                            sizeof(new_cfg->etscfg.tcbwtable)))
9349                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
9350
9351                 if (memcmp(&new_cfg->etscfg.tsatable,
9352                            &old_cfg->etscfg.tsatable,
9353                            sizeof(new_cfg->etscfg.tsatable)))
9354                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
9355         }
9356
9357         /* Check if PFC configuration has changed */
9358         if (memcmp(&new_cfg->pfc,
9359                    &old_cfg->pfc,
9360                    sizeof(new_cfg->pfc))) {
9361                 need_reconfig = true;
9362                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
9363         }
9364
9365         /* Check if APP Table has changed */
9366         if (memcmp(&new_cfg->app,
9367                    &old_cfg->app,
9368                    sizeof(new_cfg->app))) {
9369                 need_reconfig = true;
9370                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
9371         }
9372
9373         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
9374         return need_reconfig;
9375 }
9376
9377 /**
9378  * i40e_handle_lldp_event - Handle LLDP Change MIB event
9379  * @pf: board private structure
9380  * @e: event info posted on ARQ
9381  **/
9382 static int i40e_handle_lldp_event(struct i40e_pf *pf,
9383                                   struct i40e_arq_event_info *e)
9384 {
9385         struct i40e_aqc_lldp_get_mib *mib =
9386                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
9387         struct i40e_hw *hw = &pf->hw;
9388         struct i40e_dcbx_config tmp_dcbx_cfg;
9389         bool need_reconfig = false;
9390         int ret = 0;
9391         u8 type;
9392
9393         /* X710-T*L 2.5G and 5G speeds don't support DCB */
9394         if (I40E_IS_X710TL_DEVICE(hw->device_id) &&
9395             (hw->phy.link_info.link_speed &
9396              ~(I40E_LINK_SPEED_2_5GB | I40E_LINK_SPEED_5GB)) &&
9397              !(pf->flags & I40E_FLAG_DCB_CAPABLE))
9398                 /* let firmware decide if the DCB should be disabled */
9399                 pf->flags |= I40E_FLAG_DCB_CAPABLE;
9400
9401         /* Not DCB capable or capability disabled */
9402         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
9403                 return ret;
9404
9405         /* Ignore if event is not for Nearest Bridge */
9406         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
9407                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
9408         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
9409         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
9410                 return ret;
9411
9412         /* Check MIB Type and return if event for Remote MIB update */
9413         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
9414         dev_dbg(&pf->pdev->dev,
9415                 "LLDP event mib type %s\n", type ? "remote" : "local");
9416         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
9417                 /* Update the remote cached instance and return */
9418                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
9419                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
9420                                 &hw->remote_dcbx_config);
9421                 goto exit;
9422         }
9423
9424         /* Store the old configuration */
9425         tmp_dcbx_cfg = hw->local_dcbx_config;
9426
9427         /* Reset the old DCBx configuration data */
9428         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
9429         /* Get updated DCBX data from firmware */
9430         ret = i40e_get_dcb_config(&pf->hw);
9431         if (ret) {
9432                 /* X710-T*L 2.5G and 5G speeds don't support DCB */
9433                 if (I40E_IS_X710TL_DEVICE(hw->device_id) &&
9434                     (hw->phy.link_info.link_speed &
9435                      (I40E_LINK_SPEED_2_5GB | I40E_LINK_SPEED_5GB))) {
9436                         dev_warn(&pf->pdev->dev,
9437                                  "DCB is not supported for X710-T*L 2.5/5G speeds\n");
9438                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9439                 } else {
9440                         dev_info(&pf->pdev->dev,
9441                                  "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
9442                                  i40e_stat_str(&pf->hw, ret),
9443                                  i40e_aq_str(&pf->hw,
9444                                              pf->hw.aq.asq_last_status));
9445                 }
9446                 goto exit;
9447         }
9448
9449         /* No change detected in DCBX configs */
9450         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
9451                     sizeof(tmp_dcbx_cfg))) {
9452                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
9453                 goto exit;
9454         }
9455
9456         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
9457                                                &hw->local_dcbx_config);
9458
9459         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
9460
9461         if (!need_reconfig)
9462                 goto exit;
9463
9464         /* Enable DCB tagging only when more than one TC */
9465         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
9466                 pf->flags |= I40E_FLAG_DCB_ENABLED;
9467         else
9468                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
9469
9470         set_bit(__I40E_PORT_SUSPENDED, pf->state);
9471         /* Reconfiguration needed quiesce all VSIs */
9472         i40e_pf_quiesce_all_vsi(pf);
9473
9474         /* Changes in configuration update VEB/VSI */
9475         i40e_dcb_reconfigure(pf);
9476
9477         ret = i40e_resume_port_tx(pf);
9478
9479         clear_bit(__I40E_PORT_SUSPENDED, pf->state);
9480         /* In case of error no point in resuming VSIs */
9481         if (ret)
9482                 goto exit;
9483
9484         /* Wait for the PF's queues to be disabled */
9485         ret = i40e_pf_wait_queues_disabled(pf);
9486         if (ret) {
9487                 /* Schedule PF reset to recover */
9488                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9489                 i40e_service_event_schedule(pf);
9490         } else {
9491                 i40e_pf_unquiesce_all_vsi(pf);
9492                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
9493                 set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
9494         }
9495
9496 exit:
9497         return ret;
9498 }
9499 #endif /* CONFIG_I40E_DCB */
9500
9501 /**
9502  * i40e_do_reset_safe - Protected reset path for userland calls.
9503  * @pf: board private structure
9504  * @reset_flags: which reset is requested
9505  *
9506  **/
9507 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
9508 {
9509         rtnl_lock();
9510         i40e_do_reset(pf, reset_flags, true);
9511         rtnl_unlock();
9512 }
9513
9514 /**
9515  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
9516  * @pf: board private structure
9517  * @e: event info posted on ARQ
9518  *
9519  * Handler for LAN Queue Overflow Event generated by the firmware for PF
9520  * and VF queues
9521  **/
9522 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
9523                                            struct i40e_arq_event_info *e)
9524 {
9525         struct i40e_aqc_lan_overflow *data =
9526                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
9527         u32 queue = le32_to_cpu(data->prtdcb_rupto);
9528         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
9529         struct i40e_hw *hw = &pf->hw;
9530         struct i40e_vf *vf;
9531         u16 vf_id;
9532
9533         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
9534                 queue, qtx_ctl);
9535
9536         /* Queue belongs to VF, find the VF and issue VF reset */
9537         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
9538             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
9539                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
9540                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
9541                 vf_id -= hw->func_caps.vf_base_id;
9542                 vf = &pf->vf[vf_id];
9543                 i40e_vc_notify_vf_reset(vf);
9544                 /* Allow VF to process pending reset notification */
9545                 msleep(20);
9546                 i40e_reset_vf(vf, false);
9547         }
9548 }
9549
9550 /**
9551  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
9552  * @pf: board private structure
9553  **/
9554 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
9555 {
9556         u32 val, fcnt_prog;
9557
9558         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
9559         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
9560         return fcnt_prog;
9561 }
9562
9563 /**
9564  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
9565  * @pf: board private structure
9566  **/
9567 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
9568 {
9569         u32 val, fcnt_prog;
9570
9571         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
9572         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
9573                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
9574                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
9575         return fcnt_prog;
9576 }
9577
9578 /**
9579  * i40e_get_global_fd_count - Get total FD filters programmed on device
9580  * @pf: board private structure
9581  **/
9582 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
9583 {
9584         u32 val, fcnt_prog;
9585
9586         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
9587         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
9588                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
9589                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
9590         return fcnt_prog;
9591 }
9592
9593 /**
9594  * i40e_reenable_fdir_sb - Restore FDir SB capability
9595  * @pf: board private structure
9596  **/
9597 static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
9598 {
9599         if (test_and_clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
9600                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
9601                     (I40E_DEBUG_FD & pf->hw.debug_mask))
9602                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
9603 }
9604
9605 /**
9606  * i40e_reenable_fdir_atr - Restore FDir ATR capability
9607  * @pf: board private structure
9608  **/
9609 static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
9610 {
9611         if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
9612                 /* ATR uses the same filtering logic as SB rules. It only
9613                  * functions properly if the input set mask is at the default
9614                  * settings. It is safe to restore the default input set
9615                  * because there are no active TCPv4 filter rules.
9616                  */
9617                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
9618                                         I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
9619                                         I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
9620
9621                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
9622                     (I40E_DEBUG_FD & pf->hw.debug_mask))
9623                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
9624         }
9625 }
9626
9627 /**
9628  * i40e_delete_invalid_filter - Delete an invalid FDIR filter
9629  * @pf: board private structure
9630  * @filter: FDir filter to remove
9631  */
9632 static void i40e_delete_invalid_filter(struct i40e_pf *pf,
9633                                        struct i40e_fdir_filter *filter)
9634 {
9635         /* Update counters */
9636         pf->fdir_pf_active_filters--;
9637         pf->fd_inv = 0;
9638
9639         switch (filter->flow_type) {
9640         case TCP_V4_FLOW:
9641                 pf->fd_tcp4_filter_cnt--;
9642                 break;
9643         case UDP_V4_FLOW:
9644                 pf->fd_udp4_filter_cnt--;
9645                 break;
9646         case SCTP_V4_FLOW:
9647                 pf->fd_sctp4_filter_cnt--;
9648                 break;
9649         case TCP_V6_FLOW:
9650                 pf->fd_tcp6_filter_cnt--;
9651                 break;
9652         case UDP_V6_FLOW:
9653                 pf->fd_udp6_filter_cnt--;
9654                 break;
9655         case SCTP_V6_FLOW:
9656                 pf->fd_udp6_filter_cnt--;
9657                 break;
9658         case IP_USER_FLOW:
9659                 switch (filter->ipl4_proto) {
9660                 case IPPROTO_TCP:
9661                         pf->fd_tcp4_filter_cnt--;
9662                         break;
9663                 case IPPROTO_UDP:
9664                         pf->fd_udp4_filter_cnt--;
9665                         break;
9666                 case IPPROTO_SCTP:
9667                         pf->fd_sctp4_filter_cnt--;
9668                         break;
9669                 case IPPROTO_IP:
9670                         pf->fd_ip4_filter_cnt--;
9671                         break;
9672                 }
9673                 break;
9674         case IPV6_USER_FLOW:
9675                 switch (filter->ipl4_proto) {
9676                 case IPPROTO_TCP:
9677                         pf->fd_tcp6_filter_cnt--;
9678                         break;
9679                 case IPPROTO_UDP:
9680                         pf->fd_udp6_filter_cnt--;
9681                         break;
9682                 case IPPROTO_SCTP:
9683                         pf->fd_sctp6_filter_cnt--;
9684                         break;
9685                 case IPPROTO_IP:
9686                         pf->fd_ip6_filter_cnt--;
9687                         break;
9688                 }
9689                 break;
9690         }
9691
9692         /* Remove the filter from the list and free memory */
9693         hlist_del(&filter->fdir_node);
9694         kfree(filter);
9695 }
9696
9697 /**
9698  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
9699  * @pf: board private structure
9700  **/
9701 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
9702 {
9703         struct i40e_fdir_filter *filter;
9704         u32 fcnt_prog, fcnt_avail;
9705         struct hlist_node *node;
9706
9707         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9708                 return;
9709
9710         /* Check if we have enough room to re-enable FDir SB capability. */
9711         fcnt_prog = i40e_get_global_fd_count(pf);
9712         fcnt_avail = pf->fdir_pf_filter_count;
9713         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
9714             (pf->fd_add_err == 0) ||
9715             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt))
9716                 i40e_reenable_fdir_sb(pf);
9717
9718         /* We should wait for even more space before re-enabling ATR.
9719          * Additionally, we cannot enable ATR as long as we still have TCP SB
9720          * rules active.
9721          */
9722         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) &&
9723             pf->fd_tcp4_filter_cnt == 0 && pf->fd_tcp6_filter_cnt == 0)
9724                 i40e_reenable_fdir_atr(pf);
9725
9726         /* if hw had a problem adding a filter, delete it */
9727         if (pf->fd_inv > 0) {
9728                 hlist_for_each_entry_safe(filter, node,
9729                                           &pf->fdir_filter_list, fdir_node)
9730                         if (filter->fd_id == pf->fd_inv)
9731                                 i40e_delete_invalid_filter(pf, filter);
9732         }
9733 }
9734
9735 #define I40E_MIN_FD_FLUSH_INTERVAL 10
9736 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
9737 /**
9738  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
9739  * @pf: board private structure
9740  **/
9741 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
9742 {
9743         unsigned long min_flush_time;
9744         int flush_wait_retry = 50;
9745         bool disable_atr = false;
9746         int fd_room;
9747         int reg;
9748
9749         if (!time_after(jiffies, pf->fd_flush_timestamp +
9750                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
9751                 return;
9752
9753         /* If the flush is happening too quick and we have mostly SB rules we
9754          * should not re-enable ATR for some time.
9755          */
9756         min_flush_time = pf->fd_flush_timestamp +
9757                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
9758         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
9759
9760         if (!(time_after(jiffies, min_flush_time)) &&
9761             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
9762                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
9763                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
9764                 disable_atr = true;
9765         }
9766
9767         pf->fd_flush_timestamp = jiffies;
9768         set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
9769         /* flush all filters */
9770         wr32(&pf->hw, I40E_PFQF_CTL_1,
9771              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
9772         i40e_flush(&pf->hw);
9773         pf->fd_flush_cnt++;
9774         pf->fd_add_err = 0;
9775         do {
9776                 /* Check FD flush status every 5-6msec */
9777                 usleep_range(5000, 6000);
9778                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
9779                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
9780                         break;
9781         } while (flush_wait_retry--);
9782         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
9783                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
9784         } else {
9785                 /* replay sideband filters */
9786                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
9787                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
9788                         clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
9789                 clear_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
9790                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
9791                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
9792         }
9793 }
9794
9795 /**
9796  * i40e_get_current_atr_cnt - Get the count of total FD ATR filters programmed
9797  * @pf: board private structure
9798  **/
9799 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
9800 {
9801         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
9802 }
9803
9804 /**
9805  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
9806  * @pf: board private structure
9807  **/
9808 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
9809 {
9810
9811         /* if interface is down do nothing */
9812         if (test_bit(__I40E_DOWN, pf->state))
9813                 return;
9814
9815         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9816                 i40e_fdir_flush_and_replay(pf);
9817
9818         i40e_fdir_check_and_reenable(pf);
9819
9820 }
9821
9822 /**
9823  * i40e_vsi_link_event - notify VSI of a link event
9824  * @vsi: vsi to be notified
9825  * @link_up: link up or down
9826  **/
9827 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
9828 {
9829         if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
9830                 return;
9831
9832         switch (vsi->type) {
9833         case I40E_VSI_MAIN:
9834                 if (!vsi->netdev || !vsi->netdev_registered)
9835                         break;
9836
9837                 if (link_up) {
9838                         netif_carrier_on(vsi->netdev);
9839                         netif_tx_wake_all_queues(vsi->netdev);
9840                 } else {
9841                         netif_carrier_off(vsi->netdev);
9842                         netif_tx_stop_all_queues(vsi->netdev);
9843                 }
9844                 break;
9845
9846         case I40E_VSI_SRIOV:
9847         case I40E_VSI_VMDQ2:
9848         case I40E_VSI_CTRL:
9849         case I40E_VSI_IWARP:
9850         case I40E_VSI_MIRROR:
9851         default:
9852                 /* there is no notification for other VSIs */
9853                 break;
9854         }
9855 }
9856
9857 /**
9858  * i40e_veb_link_event - notify elements on the veb of a link event
9859  * @veb: veb to be notified
9860  * @link_up: link up or down
9861  **/
9862 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
9863 {
9864         struct i40e_pf *pf;
9865         int i;
9866
9867         if (!veb || !veb->pf)
9868                 return;
9869         pf = veb->pf;
9870
9871         /* depth first... */
9872         for (i = 0; i < I40E_MAX_VEB; i++)
9873                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
9874                         i40e_veb_link_event(pf->veb[i], link_up);
9875
9876         /* ... now the local VSIs */
9877         for (i = 0; i < pf->num_alloc_vsi; i++)
9878                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
9879                         i40e_vsi_link_event(pf->vsi[i], link_up);
9880 }
9881
9882 /**
9883  * i40e_link_event - Update netif_carrier status
9884  * @pf: board private structure
9885  **/
9886 static void i40e_link_event(struct i40e_pf *pf)
9887 {
9888         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9889         u8 new_link_speed, old_link_speed;
9890         i40e_status status;
9891         bool new_link, old_link;
9892 #ifdef CONFIG_I40E_DCB
9893         int err;
9894 #endif /* CONFIG_I40E_DCB */
9895
9896         /* set this to force the get_link_status call to refresh state */
9897         pf->hw.phy.get_link_info = true;
9898         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
9899         status = i40e_get_link_status(&pf->hw, &new_link);
9900
9901         /* On success, disable temp link polling */
9902         if (status == I40E_SUCCESS) {
9903                 clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9904         } else {
9905                 /* Enable link polling temporarily until i40e_get_link_status
9906                  * returns I40E_SUCCESS
9907                  */
9908                 set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9909                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
9910                         status);
9911                 return;
9912         }
9913
9914         old_link_speed = pf->hw.phy.link_info_old.link_speed;
9915         new_link_speed = pf->hw.phy.link_info.link_speed;
9916
9917         if (new_link == old_link &&
9918             new_link_speed == old_link_speed &&
9919             (test_bit(__I40E_VSI_DOWN, vsi->state) ||
9920              new_link == netif_carrier_ok(vsi->netdev)))
9921                 return;
9922
9923         i40e_print_link_message(vsi, new_link);
9924
9925         /* Notify the base of the switch tree connected to
9926          * the link.  Floating VEBs are not notified.
9927          */
9928         if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
9929                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
9930         else
9931                 i40e_vsi_link_event(vsi, new_link);
9932
9933         if (pf->vf)
9934                 i40e_vc_notify_link_state(pf);
9935
9936         if (pf->flags & I40E_FLAG_PTP)
9937                 i40e_ptp_set_increment(pf);
9938 #ifdef CONFIG_I40E_DCB
9939         if (new_link == old_link)
9940                 return;
9941         /* Not SW DCB so firmware will take care of default settings */
9942         if (pf->dcbx_cap & DCB_CAP_DCBX_LLD_MANAGED)
9943                 return;
9944
9945         /* We cover here only link down, as after link up in case of SW DCB
9946          * SW LLDP agent will take care of setting it up
9947          */
9948         if (!new_link) {
9949                 dev_dbg(&pf->pdev->dev, "Reconfig DCB to single TC as result of Link Down\n");
9950                 memset(&pf->tmp_cfg, 0, sizeof(pf->tmp_cfg));
9951                 err = i40e_dcb_sw_default_config(pf);
9952                 if (err) {
9953                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
9954                                        I40E_FLAG_DCB_ENABLED);
9955                 } else {
9956                         pf->dcbx_cap = DCB_CAP_DCBX_HOST |
9957                                        DCB_CAP_DCBX_VER_IEEE;
9958                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
9959                         pf->flags &= ~I40E_FLAG_DCB_ENABLED;
9960                 }
9961         }
9962 #endif /* CONFIG_I40E_DCB */
9963 }
9964
9965 /**
9966  * i40e_watchdog_subtask - periodic checks not using event driven response
9967  * @pf: board private structure
9968  **/
9969 static void i40e_watchdog_subtask(struct i40e_pf *pf)
9970 {
9971         int i;
9972
9973         /* if interface is down do nothing */
9974         if (test_bit(__I40E_DOWN, pf->state) ||
9975             test_bit(__I40E_CONFIG_BUSY, pf->state))
9976                 return;
9977
9978         /* make sure we don't do these things too often */
9979         if (time_before(jiffies, (pf->service_timer_previous +
9980                                   pf->service_timer_period)))
9981                 return;
9982         pf->service_timer_previous = jiffies;
9983
9984         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
9985             test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
9986                 i40e_link_event(pf);
9987
9988         /* Update the stats for active netdevs so the network stack
9989          * can look at updated numbers whenever it cares to
9990          */
9991         for (i = 0; i < pf->num_alloc_vsi; i++)
9992                 if (pf->vsi[i] && pf->vsi[i]->netdev)
9993                         i40e_update_stats(pf->vsi[i]);
9994
9995         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
9996                 /* Update the stats for the active switching components */
9997                 for (i = 0; i < I40E_MAX_VEB; i++)
9998                         if (pf->veb[i])
9999                                 i40e_update_veb_stats(pf->veb[i]);
10000         }
10001
10002         i40e_ptp_rx_hang(pf);
10003         i40e_ptp_tx_hang(pf);
10004 }
10005
10006 /**
10007  * i40e_reset_subtask - Set up for resetting the device and driver
10008  * @pf: board private structure
10009  **/
10010 static void i40e_reset_subtask(struct i40e_pf *pf)
10011 {
10012         u32 reset_flags = 0;
10013
10014         if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
10015                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
10016                 clear_bit(__I40E_REINIT_REQUESTED, pf->state);
10017         }
10018         if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
10019                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
10020                 clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
10021         }
10022         if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
10023                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
10024                 clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
10025         }
10026         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
10027                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
10028                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
10029         }
10030         if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
10031                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
10032                 clear_bit(__I40E_DOWN_REQUESTED, pf->state);
10033         }
10034
10035         /* If there's a recovery already waiting, it takes
10036          * precedence before starting a new reset sequence.
10037          */
10038         if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
10039                 i40e_prep_for_reset(pf);
10040                 i40e_reset(pf);
10041                 i40e_rebuild(pf, false, false);
10042         }
10043
10044         /* If we're already down or resetting, just bail */
10045         if (reset_flags &&
10046             !test_bit(__I40E_DOWN, pf->state) &&
10047             !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
10048                 i40e_do_reset(pf, reset_flags, false);
10049         }
10050 }
10051
10052 /**
10053  * i40e_handle_link_event - Handle link event
10054  * @pf: board private structure
10055  * @e: event info posted on ARQ
10056  **/
10057 static void i40e_handle_link_event(struct i40e_pf *pf,
10058                                    struct i40e_arq_event_info *e)
10059 {
10060         struct i40e_aqc_get_link_status *status =
10061                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
10062
10063         /* Do a new status request to re-enable LSE reporting
10064          * and load new status information into the hw struct
10065          * This completely ignores any state information
10066          * in the ARQ event info, instead choosing to always
10067          * issue the AQ update link status command.
10068          */
10069         i40e_link_event(pf);
10070
10071         /* Check if module meets thermal requirements */
10072         if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
10073                 dev_err(&pf->pdev->dev,
10074                         "Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
10075                 dev_err(&pf->pdev->dev,
10076                         "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
10077         } else {
10078                 /* check for unqualified module, if link is down, suppress
10079                  * the message if link was forced to be down.
10080                  */
10081                 if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
10082                     (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
10083                     (!(status->link_info & I40E_AQ_LINK_UP)) &&
10084                     (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
10085                         dev_err(&pf->pdev->dev,
10086                                 "Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
10087                         dev_err(&pf->pdev->dev,
10088                                 "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
10089                 }
10090         }
10091 }
10092
10093 /**
10094  * i40e_clean_adminq_subtask - Clean the AdminQ rings
10095  * @pf: board private structure
10096  **/
10097 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
10098 {
10099         struct i40e_arq_event_info event;
10100         struct i40e_hw *hw = &pf->hw;
10101         u16 pending, i = 0;
10102         i40e_status ret;
10103         u16 opcode;
10104         u32 oldval;
10105         u32 val;
10106
10107         /* Do not run clean AQ when PF reset fails */
10108         if (test_bit(__I40E_RESET_FAILED, pf->state))
10109                 return;
10110
10111         /* check for error indications */
10112         val = rd32(&pf->hw, pf->hw.aq.arq.len);
10113         oldval = val;
10114         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
10115                 if (hw->debug_mask & I40E_DEBUG_AQ)
10116                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
10117                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
10118         }
10119         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
10120                 if (hw->debug_mask & I40E_DEBUG_AQ)
10121                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
10122                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
10123                 pf->arq_overflows++;
10124         }
10125         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
10126                 if (hw->debug_mask & I40E_DEBUG_AQ)
10127                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
10128                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
10129         }
10130         if (oldval != val)
10131                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
10132
10133         val = rd32(&pf->hw, pf->hw.aq.asq.len);
10134         oldval = val;
10135         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
10136                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
10137                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
10138                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
10139         }
10140         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
10141                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
10142                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
10143                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
10144         }
10145         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
10146                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
10147                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
10148                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
10149         }
10150         if (oldval != val)
10151                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
10152
10153         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
10154         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
10155         if (!event.msg_buf)
10156                 return;
10157
10158         do {
10159                 ret = i40e_clean_arq_element(hw, &event, &pending);
10160                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
10161                         break;
10162                 else if (ret) {
10163                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
10164                         break;
10165                 }
10166
10167                 opcode = le16_to_cpu(event.desc.opcode);
10168                 switch (opcode) {
10169
10170                 case i40e_aqc_opc_get_link_status:
10171                         rtnl_lock();
10172                         i40e_handle_link_event(pf, &event);
10173                         rtnl_unlock();
10174                         break;
10175                 case i40e_aqc_opc_send_msg_to_pf:
10176                         ret = i40e_vc_process_vf_msg(pf,
10177                                         le16_to_cpu(event.desc.retval),
10178                                         le32_to_cpu(event.desc.cookie_high),
10179                                         le32_to_cpu(event.desc.cookie_low),
10180                                         event.msg_buf,
10181                                         event.msg_len);
10182                         break;
10183                 case i40e_aqc_opc_lldp_update_mib:
10184                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
10185 #ifdef CONFIG_I40E_DCB
10186                         rtnl_lock();
10187                         i40e_handle_lldp_event(pf, &event);
10188                         rtnl_unlock();
10189 #endif /* CONFIG_I40E_DCB */
10190                         break;
10191                 case i40e_aqc_opc_event_lan_overflow:
10192                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
10193                         i40e_handle_lan_overflow_event(pf, &event);
10194                         break;
10195                 case i40e_aqc_opc_send_msg_to_peer:
10196                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
10197                         break;
10198                 case i40e_aqc_opc_nvm_erase:
10199                 case i40e_aqc_opc_nvm_update:
10200                 case i40e_aqc_opc_oem_post_update:
10201                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
10202                                    "ARQ NVM operation 0x%04x completed\n",
10203                                    opcode);
10204                         break;
10205                 default:
10206                         dev_info(&pf->pdev->dev,
10207                                  "ARQ: Unknown event 0x%04x ignored\n",
10208                                  opcode);
10209                         break;
10210                 }
10211         } while (i++ < pf->adminq_work_limit);
10212
10213         if (i < pf->adminq_work_limit)
10214                 clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
10215
10216         /* re-enable Admin queue interrupt cause */
10217         val = rd32(hw, I40E_PFINT_ICR0_ENA);
10218         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
10219         wr32(hw, I40E_PFINT_ICR0_ENA, val);
10220         i40e_flush(hw);
10221
10222         kfree(event.msg_buf);
10223 }
10224
10225 /**
10226  * i40e_verify_eeprom - make sure eeprom is good to use
10227  * @pf: board private structure
10228  **/
10229 static void i40e_verify_eeprom(struct i40e_pf *pf)
10230 {
10231         int err;
10232
10233         err = i40e_diag_eeprom_test(&pf->hw);
10234         if (err) {
10235                 /* retry in case of garbage read */
10236                 err = i40e_diag_eeprom_test(&pf->hw);
10237                 if (err) {
10238                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
10239                                  err);
10240                         set_bit(__I40E_BAD_EEPROM, pf->state);
10241                 }
10242         }
10243
10244         if (!err && test_bit(__I40E_BAD_EEPROM, pf->state)) {
10245                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
10246                 clear_bit(__I40E_BAD_EEPROM, pf->state);
10247         }
10248 }
10249
10250 /**
10251  * i40e_enable_pf_switch_lb
10252  * @pf: pointer to the PF structure
10253  *
10254  * enable switch loop back or die - no point in a return value
10255  **/
10256 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
10257 {
10258         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10259         struct i40e_vsi_context ctxt;
10260         int ret;
10261
10262         ctxt.seid = pf->main_vsi_seid;
10263         ctxt.pf_num = pf->hw.pf_id;
10264         ctxt.vf_num = 0;
10265         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
10266         if (ret) {
10267                 dev_info(&pf->pdev->dev,
10268                          "couldn't get PF vsi config, err %s aq_err %s\n",
10269                          i40e_stat_str(&pf->hw, ret),
10270                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10271                 return;
10272         }
10273         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
10274         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
10275         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
10276
10277         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
10278         if (ret) {
10279                 dev_info(&pf->pdev->dev,
10280                          "update vsi switch failed, err %s aq_err %s\n",
10281                          i40e_stat_str(&pf->hw, ret),
10282                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10283         }
10284 }
10285
10286 /**
10287  * i40e_disable_pf_switch_lb
10288  * @pf: pointer to the PF structure
10289  *
10290  * disable switch loop back or die - no point in a return value
10291  **/
10292 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
10293 {
10294         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10295         struct i40e_vsi_context ctxt;
10296         int ret;
10297
10298         ctxt.seid = pf->main_vsi_seid;
10299         ctxt.pf_num = pf->hw.pf_id;
10300         ctxt.vf_num = 0;
10301         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
10302         if (ret) {
10303                 dev_info(&pf->pdev->dev,
10304                          "couldn't get PF vsi config, err %s aq_err %s\n",
10305                          i40e_stat_str(&pf->hw, ret),
10306                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10307                 return;
10308         }
10309         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
10310         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
10311         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
10312
10313         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
10314         if (ret) {
10315                 dev_info(&pf->pdev->dev,
10316                          "update vsi switch failed, err %s aq_err %s\n",
10317                          i40e_stat_str(&pf->hw, ret),
10318                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10319         }
10320 }
10321
10322 /**
10323  * i40e_config_bridge_mode - Configure the HW bridge mode
10324  * @veb: pointer to the bridge instance
10325  *
10326  * Configure the loop back mode for the LAN VSI that is downlink to the
10327  * specified HW bridge instance. It is expected this function is called
10328  * when a new HW bridge is instantiated.
10329  **/
10330 static void i40e_config_bridge_mode(struct i40e_veb *veb)
10331 {
10332         struct i40e_pf *pf = veb->pf;
10333
10334         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
10335                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
10336                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
10337         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
10338                 i40e_disable_pf_switch_lb(pf);
10339         else
10340                 i40e_enable_pf_switch_lb(pf);
10341 }
10342
10343 /**
10344  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
10345  * @veb: pointer to the VEB instance
10346  *
10347  * This is a recursive function that first builds the attached VSIs then
10348  * recurses in to build the next layer of VEB.  We track the connections
10349  * through our own index numbers because the seid's from the HW could
10350  * change across the reset.
10351  **/
10352 static int i40e_reconstitute_veb(struct i40e_veb *veb)
10353 {
10354         struct i40e_vsi *ctl_vsi = NULL;
10355         struct i40e_pf *pf = veb->pf;
10356         int v, veb_idx;
10357         int ret;
10358
10359         /* build VSI that owns this VEB, temporarily attached to base VEB */
10360         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
10361                 if (pf->vsi[v] &&
10362                     pf->vsi[v]->veb_idx == veb->idx &&
10363                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
10364                         ctl_vsi = pf->vsi[v];
10365                         break;
10366                 }
10367         }
10368         if (!ctl_vsi) {
10369                 dev_info(&pf->pdev->dev,
10370                          "missing owner VSI for veb_idx %d\n", veb->idx);
10371                 ret = -ENOENT;
10372                 goto end_reconstitute;
10373         }
10374         if (ctl_vsi != pf->vsi[pf->lan_vsi])
10375                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10376         ret = i40e_add_vsi(ctl_vsi);
10377         if (ret) {
10378                 dev_info(&pf->pdev->dev,
10379                          "rebuild of veb_idx %d owner VSI failed: %d\n",
10380                          veb->idx, ret);
10381                 goto end_reconstitute;
10382         }
10383         i40e_vsi_reset_stats(ctl_vsi);
10384
10385         /* create the VEB in the switch and move the VSI onto the VEB */
10386         ret = i40e_add_veb(veb, ctl_vsi);
10387         if (ret)
10388                 goto end_reconstitute;
10389
10390         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10391                 veb->bridge_mode = BRIDGE_MODE_VEB;
10392         else
10393                 veb->bridge_mode = BRIDGE_MODE_VEPA;
10394         i40e_config_bridge_mode(veb);
10395
10396         /* create the remaining VSIs attached to this VEB */
10397         for (v = 0; v < pf->num_alloc_vsi; v++) {
10398                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
10399                         continue;
10400
10401                 if (pf->vsi[v]->veb_idx == veb->idx) {
10402                         struct i40e_vsi *vsi = pf->vsi[v];
10403
10404                         vsi->uplink_seid = veb->seid;
10405                         ret = i40e_add_vsi(vsi);
10406                         if (ret) {
10407                                 dev_info(&pf->pdev->dev,
10408                                          "rebuild of vsi_idx %d failed: %d\n",
10409                                          v, ret);
10410                                 goto end_reconstitute;
10411                         }
10412                         i40e_vsi_reset_stats(vsi);
10413                 }
10414         }
10415
10416         /* create any VEBs attached to this VEB - RECURSION */
10417         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10418                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
10419                         pf->veb[veb_idx]->uplink_seid = veb->seid;
10420                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
10421                         if (ret)
10422                                 break;
10423                 }
10424         }
10425
10426 end_reconstitute:
10427         return ret;
10428 }
10429
10430 /**
10431  * i40e_get_capabilities - get info about the HW
10432  * @pf: the PF struct
10433  * @list_type: AQ capability to be queried
10434  **/
10435 static int i40e_get_capabilities(struct i40e_pf *pf,
10436                                  enum i40e_admin_queue_opc list_type)
10437 {
10438         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
10439         u16 data_size;
10440         int buf_len;
10441         int err;
10442
10443         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
10444         do {
10445                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
10446                 if (!cap_buf)
10447                         return -ENOMEM;
10448
10449                 /* this loads the data into the hw struct for us */
10450                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
10451                                                     &data_size, list_type,
10452                                                     NULL);
10453                 /* data loaded, buffer no longer needed */
10454                 kfree(cap_buf);
10455
10456                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
10457                         /* retry with a larger buffer */
10458                         buf_len = data_size;
10459                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK || err) {
10460                         dev_info(&pf->pdev->dev,
10461                                  "capability discovery failed, err %s aq_err %s\n",
10462                                  i40e_stat_str(&pf->hw, err),
10463                                  i40e_aq_str(&pf->hw,
10464                                              pf->hw.aq.asq_last_status));
10465                         return -ENODEV;
10466                 }
10467         } while (err);
10468
10469         if (pf->hw.debug_mask & I40E_DEBUG_USER) {
10470                 if (list_type == i40e_aqc_opc_list_func_capabilities) {
10471                         dev_info(&pf->pdev->dev,
10472                                  "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",
10473                                  pf->hw.pf_id, pf->hw.func_caps.num_vfs,
10474                                  pf->hw.func_caps.num_msix_vectors,
10475                                  pf->hw.func_caps.num_msix_vectors_vf,
10476                                  pf->hw.func_caps.fd_filters_guaranteed,
10477                                  pf->hw.func_caps.fd_filters_best_effort,
10478                                  pf->hw.func_caps.num_tx_qp,
10479                                  pf->hw.func_caps.num_vsis);
10480                 } else if (list_type == i40e_aqc_opc_list_dev_capabilities) {
10481                         dev_info(&pf->pdev->dev,
10482                                  "switch_mode=0x%04x, function_valid=0x%08x\n",
10483                                  pf->hw.dev_caps.switch_mode,
10484                                  pf->hw.dev_caps.valid_functions);
10485                         dev_info(&pf->pdev->dev,
10486                                  "SR-IOV=%d, num_vfs for all function=%u\n",
10487                                  pf->hw.dev_caps.sr_iov_1_1,
10488                                  pf->hw.dev_caps.num_vfs);
10489                         dev_info(&pf->pdev->dev,
10490                                  "num_vsis=%u, num_rx:%u, num_tx=%u\n",
10491                                  pf->hw.dev_caps.num_vsis,
10492                                  pf->hw.dev_caps.num_rx_qp,
10493                                  pf->hw.dev_caps.num_tx_qp);
10494                 }
10495         }
10496         if (list_type == i40e_aqc_opc_list_func_capabilities) {
10497 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
10498                        + pf->hw.func_caps.num_vfs)
10499                 if (pf->hw.revision_id == 0 &&
10500                     pf->hw.func_caps.num_vsis < DEF_NUM_VSI) {
10501                         dev_info(&pf->pdev->dev,
10502                                  "got num_vsis %d, setting num_vsis to %d\n",
10503                                  pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
10504                         pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
10505                 }
10506         }
10507         return 0;
10508 }
10509
10510 static int i40e_vsi_clear(struct i40e_vsi *vsi);
10511
10512 /**
10513  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
10514  * @pf: board private structure
10515  **/
10516 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
10517 {
10518         struct i40e_vsi *vsi;
10519
10520         /* quick workaround for an NVM issue that leaves a critical register
10521          * uninitialized
10522          */
10523         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
10524                 static const u32 hkey[] = {
10525                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
10526                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
10527                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
10528                         0x95b3a76d};
10529                 int i;
10530
10531                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
10532                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
10533         }
10534
10535         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
10536                 return;
10537
10538         /* find existing VSI and see if it needs configuring */
10539         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
10540
10541         /* create a new VSI if none exists */
10542         if (!vsi) {
10543                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
10544                                      pf->vsi[pf->lan_vsi]->seid, 0);
10545                 if (!vsi) {
10546                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
10547                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10548                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
10549                         return;
10550                 }
10551         }
10552
10553         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
10554 }
10555
10556 /**
10557  * i40e_fdir_teardown - release the Flow Director resources
10558  * @pf: board private structure
10559  **/
10560 static void i40e_fdir_teardown(struct i40e_pf *pf)
10561 {
10562         struct i40e_vsi *vsi;
10563
10564         i40e_fdir_filter_exit(pf);
10565         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
10566         if (vsi)
10567                 i40e_vsi_release(vsi);
10568 }
10569
10570 /**
10571  * i40e_rebuild_cloud_filters - Rebuilds cloud filters for VSIs
10572  * @vsi: PF main vsi
10573  * @seid: seid of main or channel VSIs
10574  *
10575  * Rebuilds cloud filters associated with main VSI and channel VSIs if they
10576  * existed before reset
10577  **/
10578 static int i40e_rebuild_cloud_filters(struct i40e_vsi *vsi, u16 seid)
10579 {
10580         struct i40e_cloud_filter *cfilter;
10581         struct i40e_pf *pf = vsi->back;
10582         struct hlist_node *node;
10583         i40e_status ret;
10584
10585         /* Add cloud filters back if they exist */
10586         hlist_for_each_entry_safe(cfilter, node, &pf->cloud_filter_list,
10587                                   cloud_node) {
10588                 if (cfilter->seid != seid)
10589                         continue;
10590
10591                 if (cfilter->dst_port)
10592                         ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
10593                                                                 true);
10594                 else
10595                         ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
10596
10597                 if (ret) {
10598                         dev_dbg(&pf->pdev->dev,
10599                                 "Failed to rebuild cloud filter, err %s aq_err %s\n",
10600                                 i40e_stat_str(&pf->hw, ret),
10601                                 i40e_aq_str(&pf->hw,
10602                                             pf->hw.aq.asq_last_status));
10603                         return ret;
10604                 }
10605         }
10606         return 0;
10607 }
10608
10609 /**
10610  * i40e_rebuild_channels - Rebuilds channel VSIs if they existed before reset
10611  * @vsi: PF main vsi
10612  *
10613  * Rebuilds channel VSIs if they existed before reset
10614  **/
10615 static int i40e_rebuild_channels(struct i40e_vsi *vsi)
10616 {
10617         struct i40e_channel *ch, *ch_tmp;
10618         i40e_status ret;
10619
10620         if (list_empty(&vsi->ch_list))
10621                 return 0;
10622
10623         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
10624                 if (!ch->initialized)
10625                         break;
10626                 /* Proceed with creation of channel (VMDq2) VSI */
10627                 ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
10628                 if (ret) {
10629                         dev_info(&vsi->back->pdev->dev,
10630                                  "failed to rebuild channels using uplink_seid %u\n",
10631                                  vsi->uplink_seid);
10632                         return ret;
10633                 }
10634                 /* Reconfigure TX queues using QTX_CTL register */
10635                 ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
10636                 if (ret) {
10637                         dev_info(&vsi->back->pdev->dev,
10638                                  "failed to configure TX rings for channel %u\n",
10639                                  ch->seid);
10640                         return ret;
10641                 }
10642                 /* update 'next_base_queue' */
10643                 vsi->next_base_queue = vsi->next_base_queue +
10644                                                         ch->num_queue_pairs;
10645                 if (ch->max_tx_rate) {
10646                         u64 credits = ch->max_tx_rate;
10647
10648                         if (i40e_set_bw_limit(vsi, ch->seid,
10649                                               ch->max_tx_rate))
10650                                 return -EINVAL;
10651
10652                         do_div(credits, I40E_BW_CREDIT_DIVISOR);
10653                         dev_dbg(&vsi->back->pdev->dev,
10654                                 "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10655                                 ch->max_tx_rate,
10656                                 credits,
10657                                 ch->seid);
10658                 }
10659                 ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
10660                 if (ret) {
10661                         dev_dbg(&vsi->back->pdev->dev,
10662                                 "Failed to rebuild cloud filters for channel VSI %u\n",
10663                                 ch->seid);
10664                         return ret;
10665                 }
10666         }
10667         return 0;
10668 }
10669
10670 /**
10671  * i40e_clean_xps_state - clean xps state for every tx_ring
10672  * @vsi: ptr to the VSI
10673  **/
10674 static void i40e_clean_xps_state(struct i40e_vsi *vsi)
10675 {
10676         int i;
10677
10678         if (vsi->tx_rings)
10679                 for (i = 0; i < vsi->num_queue_pairs; i++)
10680                         if (vsi->tx_rings[i])
10681                                 clear_bit(__I40E_TX_XPS_INIT_DONE,
10682                                           vsi->tx_rings[i]->state);
10683 }
10684
10685 /**
10686  * i40e_prep_for_reset - prep for the core to reset
10687  * @pf: board private structure
10688  *
10689  * Close up the VFs and other things in prep for PF Reset.
10690   **/
10691 static void i40e_prep_for_reset(struct i40e_pf *pf)
10692 {
10693         struct i40e_hw *hw = &pf->hw;
10694         i40e_status ret = 0;
10695         u32 v;
10696
10697         clear_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
10698         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
10699                 return;
10700         if (i40e_check_asq_alive(&pf->hw))
10701                 i40e_vc_notify_reset(pf);
10702
10703         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
10704
10705         /* quiesce the VSIs and their queues that are not already DOWN */
10706         i40e_pf_quiesce_all_vsi(pf);
10707
10708         for (v = 0; v < pf->num_alloc_vsi; v++) {
10709                 if (pf->vsi[v]) {
10710                         i40e_clean_xps_state(pf->vsi[v]);
10711                         pf->vsi[v]->seid = 0;
10712                 }
10713         }
10714
10715         i40e_shutdown_adminq(&pf->hw);
10716
10717         /* call shutdown HMC */
10718         if (hw->hmc.hmc_obj) {
10719                 ret = i40e_shutdown_lan_hmc(hw);
10720                 if (ret)
10721                         dev_warn(&pf->pdev->dev,
10722                                  "shutdown_lan_hmc failed: %d\n", ret);
10723         }
10724
10725         /* Save the current PTP time so that we can restore the time after the
10726          * reset completes.
10727          */
10728         i40e_ptp_save_hw_time(pf);
10729 }
10730
10731 /**
10732  * i40e_send_version - update firmware with driver version
10733  * @pf: PF struct
10734  */
10735 static void i40e_send_version(struct i40e_pf *pf)
10736 {
10737         struct i40e_driver_version dv;
10738
10739         dv.major_version = 0xff;
10740         dv.minor_version = 0xff;
10741         dv.build_version = 0xff;
10742         dv.subbuild_version = 0;
10743         strscpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
10744         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
10745 }
10746
10747 /**
10748  * i40e_get_oem_version - get OEM specific version information
10749  * @hw: pointer to the hardware structure
10750  **/
10751 static void i40e_get_oem_version(struct i40e_hw *hw)
10752 {
10753         u16 block_offset = 0xffff;
10754         u16 block_length = 0;
10755         u16 capabilities = 0;
10756         u16 gen_snap = 0;
10757         u16 release = 0;
10758
10759 #define I40E_SR_NVM_OEM_VERSION_PTR             0x1B
10760 #define I40E_NVM_OEM_LENGTH_OFFSET              0x00
10761 #define I40E_NVM_OEM_CAPABILITIES_OFFSET        0x01
10762 #define I40E_NVM_OEM_GEN_OFFSET                 0x02
10763 #define I40E_NVM_OEM_RELEASE_OFFSET             0x03
10764 #define I40E_NVM_OEM_CAPABILITIES_MASK          0x000F
10765 #define I40E_NVM_OEM_LENGTH                     3
10766
10767         /* Check if pointer to OEM version block is valid. */
10768         i40e_read_nvm_word(hw, I40E_SR_NVM_OEM_VERSION_PTR, &block_offset);
10769         if (block_offset == 0xffff)
10770                 return;
10771
10772         /* Check if OEM version block has correct length. */
10773         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_LENGTH_OFFSET,
10774                            &block_length);
10775         if (block_length < I40E_NVM_OEM_LENGTH)
10776                 return;
10777
10778         /* Check if OEM version format is as expected. */
10779         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_CAPABILITIES_OFFSET,
10780                            &capabilities);
10781         if ((capabilities & I40E_NVM_OEM_CAPABILITIES_MASK) != 0)
10782                 return;
10783
10784         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_GEN_OFFSET,
10785                            &gen_snap);
10786         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_RELEASE_OFFSET,
10787                            &release);
10788         hw->nvm.oem_ver = (gen_snap << I40E_OEM_SNAP_SHIFT) | release;
10789         hw->nvm.eetrack = I40E_OEM_EETRACK_ID;
10790 }
10791
10792 /**
10793  * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
10794  * @pf: board private structure
10795  **/
10796 static int i40e_reset(struct i40e_pf *pf)
10797 {
10798         struct i40e_hw *hw = &pf->hw;
10799         i40e_status ret;
10800
10801         ret = i40e_pf_reset(hw);
10802         if (ret) {
10803                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
10804                 set_bit(__I40E_RESET_FAILED, pf->state);
10805                 clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10806         } else {
10807                 pf->pfr_count++;
10808         }
10809         return ret;
10810 }
10811
10812 /**
10813  * i40e_rebuild - rebuild using a saved config
10814  * @pf: board private structure
10815  * @reinit: if the Main VSI needs to re-initialized.
10816  * @lock_acquired: indicates whether or not the lock has been acquired
10817  * before this function was called.
10818  **/
10819 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
10820 {
10821         const bool is_recovery_mode_reported = i40e_check_recovery_mode(pf);
10822         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
10823         struct i40e_hw *hw = &pf->hw;
10824         i40e_status ret;
10825         u32 val;
10826         int v;
10827
10828         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
10829             is_recovery_mode_reported)
10830                 i40e_set_ethtool_ops(pf->vsi[pf->lan_vsi]->netdev);
10831
10832         if (test_bit(__I40E_DOWN, pf->state) &&
10833             !test_bit(__I40E_RECOVERY_MODE, pf->state))
10834                 goto clear_recovery;
10835         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
10836
10837         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
10838         ret = i40e_init_adminq(&pf->hw);
10839         if (ret) {
10840                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
10841                          i40e_stat_str(&pf->hw, ret),
10842                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10843                 goto clear_recovery;
10844         }
10845         i40e_get_oem_version(&pf->hw);
10846
10847         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state)) {
10848                 /* The following delay is necessary for firmware update. */
10849                 mdelay(1000);
10850         }
10851
10852         /* re-verify the eeprom if we just had an EMP reset */
10853         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state))
10854                 i40e_verify_eeprom(pf);
10855
10856         /* if we are going out of or into recovery mode we have to act
10857          * accordingly with regard to resources initialization
10858          * and deinitialization
10859          */
10860         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10861                 if (i40e_get_capabilities(pf,
10862                                           i40e_aqc_opc_list_func_capabilities))
10863                         goto end_unlock;
10864
10865                 if (is_recovery_mode_reported) {
10866                         /* we're staying in recovery mode so we'll reinitialize
10867                          * misc vector here
10868                          */
10869                         if (i40e_setup_misc_vector_for_recovery_mode(pf))
10870                                 goto end_unlock;
10871                 } else {
10872                         if (!lock_acquired)
10873                                 rtnl_lock();
10874                         /* we're going out of recovery mode so we'll free
10875                          * the IRQ allocated specifically for recovery mode
10876                          * and restore the interrupt scheme
10877                          */
10878                         free_irq(pf->pdev->irq, pf);
10879                         i40e_clear_interrupt_scheme(pf);
10880                         if (i40e_restore_interrupt_scheme(pf))
10881                                 goto end_unlock;
10882                 }
10883
10884                 /* tell the firmware that we're starting */
10885                 i40e_send_version(pf);
10886
10887                 /* bail out in case recovery mode was detected, as there is
10888                  * no need for further configuration.
10889                  */
10890                 goto end_unlock;
10891         }
10892
10893         i40e_clear_pxe_mode(hw);
10894         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
10895         if (ret)
10896                 goto end_core_reset;
10897
10898         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10899                                 hw->func_caps.num_rx_qp, 0, 0);
10900         if (ret) {
10901                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
10902                 goto end_core_reset;
10903         }
10904         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10905         if (ret) {
10906                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
10907                 goto end_core_reset;
10908         }
10909
10910 #ifdef CONFIG_I40E_DCB
10911         /* Enable FW to write a default DCB config on link-up
10912          * unless I40E_FLAG_TC_MQPRIO was enabled or DCB
10913          * is not supported with new link speed
10914          */
10915         if (i40e_is_tc_mqprio_enabled(pf)) {
10916                 i40e_aq_set_dcb_parameters(hw, false, NULL);
10917         } else {
10918                 if (I40E_IS_X710TL_DEVICE(hw->device_id) &&
10919                     (hw->phy.link_info.link_speed &
10920                      (I40E_LINK_SPEED_2_5GB | I40E_LINK_SPEED_5GB))) {
10921                         i40e_aq_set_dcb_parameters(hw, false, NULL);
10922                         dev_warn(&pf->pdev->dev,
10923                                  "DCB is not supported for X710-T*L 2.5/5G speeds\n");
10924                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10925                 } else {
10926                         i40e_aq_set_dcb_parameters(hw, true, NULL);
10927                         ret = i40e_init_pf_dcb(pf);
10928                         if (ret) {
10929                                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n",
10930                                          ret);
10931                                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10932                                 /* Continue without DCB enabled */
10933                         }
10934                 }
10935         }
10936
10937 #endif /* CONFIG_I40E_DCB */
10938         if (!lock_acquired)
10939                 rtnl_lock();
10940         ret = i40e_setup_pf_switch(pf, reinit, true);
10941         if (ret)
10942                 goto end_unlock;
10943
10944         /* The driver only wants link up/down and module qualification
10945          * reports from firmware.  Note the negative logic.
10946          */
10947         ret = i40e_aq_set_phy_int_mask(&pf->hw,
10948                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10949                                          I40E_AQ_EVENT_MEDIA_NA |
10950                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10951         if (ret)
10952                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10953                          i40e_stat_str(&pf->hw, ret),
10954                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10955
10956         /* Rebuild the VSIs and VEBs that existed before reset.
10957          * They are still in our local switch element arrays, so only
10958          * need to rebuild the switch model in the HW.
10959          *
10960          * If there were VEBs but the reconstitution failed, we'll try
10961          * to recover minimal use by getting the basic PF VSI working.
10962          */
10963         if (vsi->uplink_seid != pf->mac_seid) {
10964                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
10965                 /* find the one VEB connected to the MAC, and find orphans */
10966                 for (v = 0; v < I40E_MAX_VEB; v++) {
10967                         if (!pf->veb[v])
10968                                 continue;
10969
10970                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
10971                             pf->veb[v]->uplink_seid == 0) {
10972                                 ret = i40e_reconstitute_veb(pf->veb[v]);
10973
10974                                 if (!ret)
10975                                         continue;
10976
10977                                 /* If Main VEB failed, we're in deep doodoo,
10978                                  * so give up rebuilding the switch and set up
10979                                  * for minimal rebuild of PF VSI.
10980                                  * If orphan failed, we'll report the error
10981                                  * but try to keep going.
10982                                  */
10983                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
10984                                         dev_info(&pf->pdev->dev,
10985                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
10986                                                  ret);
10987                                         vsi->uplink_seid = pf->mac_seid;
10988                                         break;
10989                                 } else if (pf->veb[v]->uplink_seid == 0) {
10990                                         dev_info(&pf->pdev->dev,
10991                                                  "rebuild of orphan VEB failed: %d\n",
10992                                                  ret);
10993                                 }
10994                         }
10995                 }
10996         }
10997
10998         if (vsi->uplink_seid == pf->mac_seid) {
10999                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
11000                 /* no VEB, so rebuild only the Main VSI */
11001                 ret = i40e_add_vsi(vsi);
11002                 if (ret) {
11003                         dev_info(&pf->pdev->dev,
11004                                  "rebuild of Main VSI failed: %d\n", ret);
11005                         goto end_unlock;
11006                 }
11007         }
11008
11009         if (vsi->mqprio_qopt.max_rate[0]) {
11010                 u64 max_tx_rate = i40e_bw_bytes_to_mbits(vsi,
11011                                                   vsi->mqprio_qopt.max_rate[0]);
11012                 u64 credits = 0;
11013
11014                 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
11015                 if (ret)
11016                         goto end_unlock;
11017
11018                 credits = max_tx_rate;
11019                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
11020                 dev_dbg(&vsi->back->pdev->dev,
11021                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
11022                         max_tx_rate,
11023                         credits,
11024                         vsi->seid);
11025         }
11026
11027         ret = i40e_rebuild_cloud_filters(vsi, vsi->seid);
11028         if (ret)
11029                 goto end_unlock;
11030
11031         /* PF Main VSI is rebuild by now, go ahead and rebuild channel VSIs
11032          * for this main VSI if they exist
11033          */
11034         ret = i40e_rebuild_channels(vsi);
11035         if (ret)
11036                 goto end_unlock;
11037
11038         /* Reconfigure hardware for allowing smaller MSS in the case
11039          * of TSO, so that we avoid the MDD being fired and causing
11040          * a reset in the case of small MSS+TSO.
11041          */
11042 #define I40E_REG_MSS          0x000E64DC
11043 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
11044 #define I40E_64BYTE_MSS       0x400000
11045         val = rd32(hw, I40E_REG_MSS);
11046         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11047                 val &= ~I40E_REG_MSS_MIN_MASK;
11048                 val |= I40E_64BYTE_MSS;
11049                 wr32(hw, I40E_REG_MSS, val);
11050         }
11051
11052         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
11053                 msleep(75);
11054                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11055                 if (ret)
11056                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11057                                  i40e_stat_str(&pf->hw, ret),
11058                                  i40e_aq_str(&pf->hw,
11059                                              pf->hw.aq.asq_last_status));
11060         }
11061         /* reinit the misc interrupt */
11062         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11063                 ret = i40e_setup_misc_vector(pf);
11064
11065         /* Add a filter to drop all Flow control frames from any VSI from being
11066          * transmitted. By doing so we stop a malicious VF from sending out
11067          * PAUSE or PFC frames and potentially controlling traffic for other
11068          * PF/VF VSIs.
11069          * The FW can still send Flow control frames if enabled.
11070          */
11071         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11072                                                        pf->main_vsi_seid);
11073
11074         /* restart the VSIs that were rebuilt and running before the reset */
11075         i40e_pf_unquiesce_all_vsi(pf);
11076
11077         /* Release the RTNL lock before we start resetting VFs */
11078         if (!lock_acquired)
11079                 rtnl_unlock();
11080
11081         /* Restore promiscuous settings */
11082         ret = i40e_set_promiscuous(pf, pf->cur_promisc);
11083         if (ret)
11084                 dev_warn(&pf->pdev->dev,
11085                          "Failed to restore promiscuous setting: %s, err %s aq_err %s\n",
11086                          pf->cur_promisc ? "on" : "off",
11087                          i40e_stat_str(&pf->hw, ret),
11088                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11089
11090         i40e_reset_all_vfs(pf, true);
11091
11092         /* tell the firmware that we're starting */
11093         i40e_send_version(pf);
11094
11095         /* We've already released the lock, so don't do it again */
11096         goto end_core_reset;
11097
11098 end_unlock:
11099         if (!lock_acquired)
11100                 rtnl_unlock();
11101 end_core_reset:
11102         clear_bit(__I40E_RESET_FAILED, pf->state);
11103 clear_recovery:
11104         clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
11105         clear_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state);
11106 }
11107
11108 /**
11109  * i40e_reset_and_rebuild - reset and rebuild using a saved config
11110  * @pf: board private structure
11111  * @reinit: if the Main VSI needs to re-initialized.
11112  * @lock_acquired: indicates whether or not the lock has been acquired
11113  * before this function was called.
11114  **/
11115 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
11116                                    bool lock_acquired)
11117 {
11118         int ret;
11119
11120         if (test_bit(__I40E_IN_REMOVE, pf->state))
11121                 return;
11122         /* Now we wait for GRST to settle out.
11123          * We don't have to delete the VEBs or VSIs from the hw switch
11124          * because the reset will make them disappear.
11125          */
11126         ret = i40e_reset(pf);
11127         if (!ret)
11128                 i40e_rebuild(pf, reinit, lock_acquired);
11129 }
11130
11131 /**
11132  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
11133  * @pf: board private structure
11134  *
11135  * Close up the VFs and other things in prep for a Core Reset,
11136  * then get ready to rebuild the world.
11137  * @lock_acquired: indicates whether or not the lock has been acquired
11138  * before this function was called.
11139  **/
11140 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
11141 {
11142         i40e_prep_for_reset(pf);
11143         i40e_reset_and_rebuild(pf, false, lock_acquired);
11144 }
11145
11146 /**
11147  * i40e_handle_mdd_event
11148  * @pf: pointer to the PF structure
11149  *
11150  * Called from the MDD irq handler to identify possibly malicious vfs
11151  **/
11152 static void i40e_handle_mdd_event(struct i40e_pf *pf)
11153 {
11154         struct i40e_hw *hw = &pf->hw;
11155         bool mdd_detected = false;
11156         struct i40e_vf *vf;
11157         u32 reg;
11158         int i;
11159
11160         if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
11161                 return;
11162
11163         /* find what triggered the MDD event */
11164         reg = rd32(hw, I40E_GL_MDET_TX);
11165         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
11166                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
11167                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
11168                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
11169                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
11170                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
11171                                 I40E_GL_MDET_TX_EVENT_SHIFT;
11172                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
11173                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
11174                                 pf->hw.func_caps.base_queue;
11175                 if (netif_msg_tx_err(pf))
11176                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
11177                                  event, queue, pf_num, vf_num);
11178                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
11179                 mdd_detected = true;
11180         }
11181         reg = rd32(hw, I40E_GL_MDET_RX);
11182         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
11183                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
11184                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
11185                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
11186                                 I40E_GL_MDET_RX_EVENT_SHIFT;
11187                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
11188                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
11189                                 pf->hw.func_caps.base_queue;
11190                 if (netif_msg_rx_err(pf))
11191                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
11192                                  event, queue, func);
11193                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
11194                 mdd_detected = true;
11195         }
11196
11197         if (mdd_detected) {
11198                 reg = rd32(hw, I40E_PF_MDET_TX);
11199                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
11200                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
11201                         dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n");
11202                 }
11203                 reg = rd32(hw, I40E_PF_MDET_RX);
11204                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
11205                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
11206                         dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n");
11207                 }
11208         }
11209
11210         /* see if one of the VFs needs its hand slapped */
11211         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
11212                 vf = &(pf->vf[i]);
11213                 reg = rd32(hw, I40E_VP_MDET_TX(i));
11214                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
11215                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
11216                         vf->num_mdd_events++;
11217                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
11218                                  i);
11219                         dev_info(&pf->pdev->dev,
11220                                  "Use PF Control I/F to re-enable the VF\n");
11221                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
11222                 }
11223
11224                 reg = rd32(hw, I40E_VP_MDET_RX(i));
11225                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
11226                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
11227                         vf->num_mdd_events++;
11228                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
11229                                  i);
11230                         dev_info(&pf->pdev->dev,
11231                                  "Use PF Control I/F to re-enable the VF\n");
11232                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
11233                 }
11234         }
11235
11236         /* re-enable mdd interrupt cause */
11237         clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
11238         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
11239         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
11240         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
11241         i40e_flush(hw);
11242 }
11243
11244 /**
11245  * i40e_service_task - Run the driver's async subtasks
11246  * @work: pointer to work_struct containing our data
11247  **/
11248 static void i40e_service_task(struct work_struct *work)
11249 {
11250         struct i40e_pf *pf = container_of(work,
11251                                           struct i40e_pf,
11252                                           service_task);
11253         unsigned long start_time = jiffies;
11254
11255         /* don't bother with service tasks if a reset is in progress */
11256         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
11257             test_bit(__I40E_SUSPENDED, pf->state))
11258                 return;
11259
11260         if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
11261                 return;
11262
11263         if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) {
11264                 i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
11265                 i40e_sync_filters_subtask(pf);
11266                 i40e_reset_subtask(pf);
11267                 i40e_handle_mdd_event(pf);
11268                 i40e_vc_process_vflr_event(pf);
11269                 i40e_watchdog_subtask(pf);
11270                 i40e_fdir_reinit_subtask(pf);
11271                 if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
11272                         /* Client subtask will reopen next time through. */
11273                         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi],
11274                                                            true);
11275                 } else {
11276                         i40e_client_subtask(pf);
11277                         if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
11278                                                pf->state))
11279                                 i40e_notify_client_of_l2_param_changes(
11280                                                                 pf->vsi[pf->lan_vsi]);
11281                 }
11282                 i40e_sync_filters_subtask(pf);
11283         } else {
11284                 i40e_reset_subtask(pf);
11285         }
11286
11287         i40e_clean_adminq_subtask(pf);
11288
11289         /* flush memory to make sure state is correct before next watchdog */
11290         smp_mb__before_atomic();
11291         clear_bit(__I40E_SERVICE_SCHED, pf->state);
11292
11293         /* If the tasks have taken longer than one timer cycle or there
11294          * is more work to be done, reschedule the service task now
11295          * rather than wait for the timer to tick again.
11296          */
11297         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
11298             test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)             ||
11299             test_bit(__I40E_MDD_EVENT_PENDING, pf->state)                ||
11300             test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
11301                 i40e_service_event_schedule(pf);
11302 }
11303
11304 /**
11305  * i40e_service_timer - timer callback
11306  * @t: timer list pointer
11307  **/
11308 static void i40e_service_timer(struct timer_list *t)
11309 {
11310         struct i40e_pf *pf = from_timer(pf, t, service_timer);
11311
11312         mod_timer(&pf->service_timer,
11313                   round_jiffies(jiffies + pf->service_timer_period));
11314         i40e_service_event_schedule(pf);
11315 }
11316
11317 /**
11318  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
11319  * @vsi: the VSI being configured
11320  **/
11321 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
11322 {
11323         struct i40e_pf *pf = vsi->back;
11324
11325         switch (vsi->type) {
11326         case I40E_VSI_MAIN:
11327                 vsi->alloc_queue_pairs = pf->num_lan_qps;
11328                 if (!vsi->num_tx_desc)
11329                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11330                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11331                 if (!vsi->num_rx_desc)
11332                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11333                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11334                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11335                         vsi->num_q_vectors = pf->num_lan_msix;
11336                 else
11337                         vsi->num_q_vectors = 1;
11338
11339                 break;
11340
11341         case I40E_VSI_FDIR:
11342                 vsi->alloc_queue_pairs = 1;
11343                 vsi->num_tx_desc = ALIGN(I40E_FDIR_RING_COUNT,
11344                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
11345                 vsi->num_rx_desc = ALIGN(I40E_FDIR_RING_COUNT,
11346                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
11347                 vsi->num_q_vectors = pf->num_fdsb_msix;
11348                 break;
11349
11350         case I40E_VSI_VMDQ2:
11351                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
11352                 if (!vsi->num_tx_desc)
11353                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11354                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11355                 if (!vsi->num_rx_desc)
11356                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11357                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11358                 vsi->num_q_vectors = pf->num_vmdq_msix;
11359                 break;
11360
11361         case I40E_VSI_SRIOV:
11362                 vsi->alloc_queue_pairs = pf->num_vf_qps;
11363                 if (!vsi->num_tx_desc)
11364                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11365                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11366                 if (!vsi->num_rx_desc)
11367                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
11368                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
11369                 break;
11370
11371         default:
11372                 WARN_ON(1);
11373                 return -ENODATA;
11374         }
11375
11376         if (is_kdump_kernel()) {
11377                 vsi->num_tx_desc = I40E_MIN_NUM_DESCRIPTORS;
11378                 vsi->num_rx_desc = I40E_MIN_NUM_DESCRIPTORS;
11379         }
11380
11381         return 0;
11382 }
11383
11384 /**
11385  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
11386  * @vsi: VSI pointer
11387  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
11388  *
11389  * On error: returns error code (negative)
11390  * On success: returns 0
11391  **/
11392 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
11393 {
11394         struct i40e_ring **next_rings;
11395         int size;
11396         int ret = 0;
11397
11398         /* allocate memory for both Tx, XDP Tx and Rx ring pointers */
11399         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
11400                (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
11401         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
11402         if (!vsi->tx_rings)
11403                 return -ENOMEM;
11404         next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
11405         if (i40e_enabled_xdp_vsi(vsi)) {
11406                 vsi->xdp_rings = next_rings;
11407                 next_rings += vsi->alloc_queue_pairs;
11408         }
11409         vsi->rx_rings = next_rings;
11410
11411         if (alloc_qvectors) {
11412                 /* allocate memory for q_vector pointers */
11413                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
11414                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
11415                 if (!vsi->q_vectors) {
11416                         ret = -ENOMEM;
11417                         goto err_vectors;
11418                 }
11419         }
11420         return ret;
11421
11422 err_vectors:
11423         kfree(vsi->tx_rings);
11424         return ret;
11425 }
11426
11427 /**
11428  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
11429  * @pf: board private structure
11430  * @type: type of VSI
11431  *
11432  * On error: returns error code (negative)
11433  * On success: returns vsi index in PF (positive)
11434  **/
11435 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
11436 {
11437         int ret = -ENODEV;
11438         struct i40e_vsi *vsi;
11439         int vsi_idx;
11440         int i;
11441
11442         /* Need to protect the allocation of the VSIs at the PF level */
11443         mutex_lock(&pf->switch_mutex);
11444
11445         /* VSI list may be fragmented if VSI creation/destruction has
11446          * been happening.  We can afford to do a quick scan to look
11447          * for any free VSIs in the list.
11448          *
11449          * find next empty vsi slot, looping back around if necessary
11450          */
11451         i = pf->next_vsi;
11452         while (i < pf->num_alloc_vsi && pf->vsi[i])
11453                 i++;
11454         if (i >= pf->num_alloc_vsi) {
11455                 i = 0;
11456                 while (i < pf->next_vsi && pf->vsi[i])
11457                         i++;
11458         }
11459
11460         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
11461                 vsi_idx = i;             /* Found one! */
11462         } else {
11463                 ret = -ENODEV;
11464                 goto unlock_pf;  /* out of VSI slots! */
11465         }
11466         pf->next_vsi = ++i;
11467
11468         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
11469         if (!vsi) {
11470                 ret = -ENOMEM;
11471                 goto unlock_pf;
11472         }
11473         vsi->type = type;
11474         vsi->back = pf;
11475         set_bit(__I40E_VSI_DOWN, vsi->state);
11476         vsi->flags = 0;
11477         vsi->idx = vsi_idx;
11478         vsi->int_rate_limit = 0;
11479         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
11480                                 pf->rss_table_size : 64;
11481         vsi->netdev_registered = false;
11482         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
11483         hash_init(vsi->mac_filter_hash);
11484         vsi->irqs_ready = false;
11485
11486         if (type == I40E_VSI_MAIN) {
11487                 vsi->af_xdp_zc_qps = bitmap_zalloc(pf->num_lan_qps, GFP_KERNEL);
11488                 if (!vsi->af_xdp_zc_qps)
11489                         goto err_rings;
11490         }
11491
11492         ret = i40e_set_num_rings_in_vsi(vsi);
11493         if (ret)
11494                 goto err_rings;
11495
11496         ret = i40e_vsi_alloc_arrays(vsi, true);
11497         if (ret)
11498                 goto err_rings;
11499
11500         /* Setup default MSIX irq handler for VSI */
11501         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
11502
11503         /* Initialize VSI lock */
11504         spin_lock_init(&vsi->mac_filter_hash_lock);
11505         pf->vsi[vsi_idx] = vsi;
11506         ret = vsi_idx;
11507         goto unlock_pf;
11508
11509 err_rings:
11510         bitmap_free(vsi->af_xdp_zc_qps);
11511         pf->next_vsi = i - 1;
11512         kfree(vsi);
11513 unlock_pf:
11514         mutex_unlock(&pf->switch_mutex);
11515         return ret;
11516 }
11517
11518 /**
11519  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
11520  * @vsi: VSI pointer
11521  * @free_qvectors: a bool to specify if q_vectors need to be freed.
11522  *
11523  * On error: returns error code (negative)
11524  * On success: returns 0
11525  **/
11526 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
11527 {
11528         /* free the ring and vector containers */
11529         if (free_qvectors) {
11530                 kfree(vsi->q_vectors);
11531                 vsi->q_vectors = NULL;
11532         }
11533         kfree(vsi->tx_rings);
11534         vsi->tx_rings = NULL;
11535         vsi->rx_rings = NULL;
11536         vsi->xdp_rings = NULL;
11537 }
11538
11539 /**
11540  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
11541  * and lookup table
11542  * @vsi: Pointer to VSI structure
11543  */
11544 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
11545 {
11546         if (!vsi)
11547                 return;
11548
11549         kfree(vsi->rss_hkey_user);
11550         vsi->rss_hkey_user = NULL;
11551
11552         kfree(vsi->rss_lut_user);
11553         vsi->rss_lut_user = NULL;
11554 }
11555
11556 /**
11557  * i40e_vsi_clear - Deallocate the VSI provided
11558  * @vsi: the VSI being un-configured
11559  **/
11560 static int i40e_vsi_clear(struct i40e_vsi *vsi)
11561 {
11562         struct i40e_pf *pf;
11563
11564         if (!vsi)
11565                 return 0;
11566
11567         if (!vsi->back)
11568                 goto free_vsi;
11569         pf = vsi->back;
11570
11571         mutex_lock(&pf->switch_mutex);
11572         if (!pf->vsi[vsi->idx]) {
11573                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](type %d)\n",
11574                         vsi->idx, vsi->idx, vsi->type);
11575                 goto unlock_vsi;
11576         }
11577
11578         if (pf->vsi[vsi->idx] != vsi) {
11579                 dev_err(&pf->pdev->dev,
11580                         "pf->vsi[%d](type %d) != vsi[%d](type %d): no free!\n",
11581                         pf->vsi[vsi->idx]->idx,
11582                         pf->vsi[vsi->idx]->type,
11583                         vsi->idx, vsi->type);
11584                 goto unlock_vsi;
11585         }
11586
11587         /* updates the PF for this cleared vsi */
11588         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
11589         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
11590
11591         bitmap_free(vsi->af_xdp_zc_qps);
11592         i40e_vsi_free_arrays(vsi, true);
11593         i40e_clear_rss_config_user(vsi);
11594
11595         pf->vsi[vsi->idx] = NULL;
11596         if (vsi->idx < pf->next_vsi)
11597                 pf->next_vsi = vsi->idx;
11598
11599 unlock_vsi:
11600         mutex_unlock(&pf->switch_mutex);
11601 free_vsi:
11602         kfree(vsi);
11603
11604         return 0;
11605 }
11606
11607 /**
11608  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
11609  * @vsi: the VSI being cleaned
11610  **/
11611 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
11612 {
11613         int i;
11614
11615         if (vsi->tx_rings && vsi->tx_rings[0]) {
11616                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
11617                         kfree_rcu(vsi->tx_rings[i], rcu);
11618                         WRITE_ONCE(vsi->tx_rings[i], NULL);
11619                         WRITE_ONCE(vsi->rx_rings[i], NULL);
11620                         if (vsi->xdp_rings)
11621                                 WRITE_ONCE(vsi->xdp_rings[i], NULL);
11622                 }
11623         }
11624 }
11625
11626 /**
11627  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
11628  * @vsi: the VSI being configured
11629  **/
11630 static int i40e_alloc_rings(struct i40e_vsi *vsi)
11631 {
11632         int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
11633         struct i40e_pf *pf = vsi->back;
11634         struct i40e_ring *ring;
11635
11636         /* Set basic values in the rings to be used later during open() */
11637         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
11638                 /* allocate space for both Tx and Rx in one shot */
11639                 ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
11640                 if (!ring)
11641                         goto err_out;
11642
11643                 ring->queue_index = i;
11644                 ring->reg_idx = vsi->base_queue + i;
11645                 ring->ring_active = false;
11646                 ring->vsi = vsi;
11647                 ring->netdev = vsi->netdev;
11648                 ring->dev = &pf->pdev->dev;
11649                 ring->count = vsi->num_tx_desc;
11650                 ring->size = 0;
11651                 ring->dcb_tc = 0;
11652                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
11653                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
11654                 ring->itr_setting = pf->tx_itr_default;
11655                 WRITE_ONCE(vsi->tx_rings[i], ring++);
11656
11657                 if (!i40e_enabled_xdp_vsi(vsi))
11658                         goto setup_rx;
11659
11660                 ring->queue_index = vsi->alloc_queue_pairs + i;
11661                 ring->reg_idx = vsi->base_queue + ring->queue_index;
11662                 ring->ring_active = false;
11663                 ring->vsi = vsi;
11664                 ring->netdev = NULL;
11665                 ring->dev = &pf->pdev->dev;
11666                 ring->count = vsi->num_tx_desc;
11667                 ring->size = 0;
11668                 ring->dcb_tc = 0;
11669                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
11670                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
11671                 set_ring_xdp(ring);
11672                 ring->itr_setting = pf->tx_itr_default;
11673                 WRITE_ONCE(vsi->xdp_rings[i], ring++);
11674
11675 setup_rx:
11676                 ring->queue_index = i;
11677                 ring->reg_idx = vsi->base_queue + i;
11678                 ring->ring_active = false;
11679                 ring->vsi = vsi;
11680                 ring->netdev = vsi->netdev;
11681                 ring->dev = &pf->pdev->dev;
11682                 ring->count = vsi->num_rx_desc;
11683                 ring->size = 0;
11684                 ring->dcb_tc = 0;
11685                 ring->itr_setting = pf->rx_itr_default;
11686                 WRITE_ONCE(vsi->rx_rings[i], ring);
11687         }
11688
11689         return 0;
11690
11691 err_out:
11692         i40e_vsi_clear_rings(vsi);
11693         return -ENOMEM;
11694 }
11695
11696 /**
11697  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
11698  * @pf: board private structure
11699  * @vectors: the number of MSI-X vectors to request
11700  *
11701  * Returns the number of vectors reserved, or error
11702  **/
11703 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
11704 {
11705         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
11706                                         I40E_MIN_MSIX, vectors);
11707         if (vectors < 0) {
11708                 dev_info(&pf->pdev->dev,
11709                          "MSI-X vector reservation failed: %d\n", vectors);
11710                 vectors = 0;
11711         }
11712
11713         return vectors;
11714 }
11715
11716 /**
11717  * i40e_init_msix - Setup the MSIX capability
11718  * @pf: board private structure
11719  *
11720  * Work with the OS to set up the MSIX vectors needed.
11721  *
11722  * Returns the number of vectors reserved or negative on failure
11723  **/
11724 static int i40e_init_msix(struct i40e_pf *pf)
11725 {
11726         struct i40e_hw *hw = &pf->hw;
11727         int cpus, extra_vectors;
11728         int vectors_left;
11729         int v_budget, i;
11730         int v_actual;
11731         int iwarp_requested = 0;
11732
11733         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
11734                 return -ENODEV;
11735
11736         /* The number of vectors we'll request will be comprised of:
11737          *   - Add 1 for "other" cause for Admin Queue events, etc.
11738          *   - The number of LAN queue pairs
11739          *      - Queues being used for RSS.
11740          *              We don't need as many as max_rss_size vectors.
11741          *              use rss_size instead in the calculation since that
11742          *              is governed by number of cpus in the system.
11743          *      - assumes symmetric Tx/Rx pairing
11744          *   - The number of VMDq pairs
11745          *   - The CPU count within the NUMA node if iWARP is enabled
11746          * Once we count this up, try the request.
11747          *
11748          * If we can't get what we want, we'll simplify to nearly nothing
11749          * and try again.  If that still fails, we punt.
11750          */
11751         vectors_left = hw->func_caps.num_msix_vectors;
11752         v_budget = 0;
11753
11754         /* reserve one vector for miscellaneous handler */
11755         if (vectors_left) {
11756                 v_budget++;
11757                 vectors_left--;
11758         }
11759
11760         /* reserve some vectors for the main PF traffic queues. Initially we
11761          * only reserve at most 50% of the available vectors, in the case that
11762          * the number of online CPUs is large. This ensures that we can enable
11763          * extra features as well. Once we've enabled the other features, we
11764          * will use any remaining vectors to reach as close as we can to the
11765          * number of online CPUs.
11766          */
11767         cpus = num_online_cpus();
11768         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
11769         vectors_left -= pf->num_lan_msix;
11770
11771         /* reserve one vector for sideband flow director */
11772         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11773                 if (vectors_left) {
11774                         pf->num_fdsb_msix = 1;
11775                         v_budget++;
11776                         vectors_left--;
11777                 } else {
11778                         pf->num_fdsb_msix = 0;
11779                 }
11780         }
11781
11782         /* can we reserve enough for iWARP? */
11783         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11784                 iwarp_requested = pf->num_iwarp_msix;
11785
11786                 if (!vectors_left)
11787                         pf->num_iwarp_msix = 0;
11788                 else if (vectors_left < pf->num_iwarp_msix)
11789                         pf->num_iwarp_msix = 1;
11790                 v_budget += pf->num_iwarp_msix;
11791                 vectors_left -= pf->num_iwarp_msix;
11792         }
11793
11794         /* any vectors left over go for VMDq support */
11795         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
11796                 if (!vectors_left) {
11797                         pf->num_vmdq_msix = 0;
11798                         pf->num_vmdq_qps = 0;
11799                 } else {
11800                         int vmdq_vecs_wanted =
11801                                 pf->num_vmdq_vsis * pf->num_vmdq_qps;
11802                         int vmdq_vecs =
11803                                 min_t(int, vectors_left, vmdq_vecs_wanted);
11804
11805                         /* if we're short on vectors for what's desired, we limit
11806                          * the queues per vmdq.  If this is still more than are
11807                          * available, the user will need to change the number of
11808                          * queues/vectors used by the PF later with the ethtool
11809                          * channels command
11810                          */
11811                         if (vectors_left < vmdq_vecs_wanted) {
11812                                 pf->num_vmdq_qps = 1;
11813                                 vmdq_vecs_wanted = pf->num_vmdq_vsis;
11814                                 vmdq_vecs = min_t(int,
11815                                                   vectors_left,
11816                                                   vmdq_vecs_wanted);
11817                         }
11818                         pf->num_vmdq_msix = pf->num_vmdq_qps;
11819
11820                         v_budget += vmdq_vecs;
11821                         vectors_left -= vmdq_vecs;
11822                 }
11823         }
11824
11825         /* On systems with a large number of SMP cores, we previously limited
11826          * the number of vectors for num_lan_msix to be at most 50% of the
11827          * available vectors, to allow for other features. Now, we add back
11828          * the remaining vectors. However, we ensure that the total
11829          * num_lan_msix will not exceed num_online_cpus(). To do this, we
11830          * calculate the number of vectors we can add without going over the
11831          * cap of CPUs. For systems with a small number of CPUs this will be
11832          * zero.
11833          */
11834         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
11835         pf->num_lan_msix += extra_vectors;
11836         vectors_left -= extra_vectors;
11837
11838         WARN(vectors_left < 0,
11839              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
11840
11841         v_budget += pf->num_lan_msix;
11842         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
11843                                    GFP_KERNEL);
11844         if (!pf->msix_entries)
11845                 return -ENOMEM;
11846
11847         for (i = 0; i < v_budget; i++)
11848                 pf->msix_entries[i].entry = i;
11849         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
11850
11851         if (v_actual < I40E_MIN_MSIX) {
11852                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
11853                 kfree(pf->msix_entries);
11854                 pf->msix_entries = NULL;
11855                 pci_disable_msix(pf->pdev);
11856                 return -ENODEV;
11857
11858         } else if (v_actual == I40E_MIN_MSIX) {
11859                 /* Adjust for minimal MSIX use */
11860                 pf->num_vmdq_vsis = 0;
11861                 pf->num_vmdq_qps = 0;
11862                 pf->num_lan_qps = 1;
11863                 pf->num_lan_msix = 1;
11864
11865         } else if (v_actual != v_budget) {
11866                 /* If we have limited resources, we will start with no vectors
11867                  * for the special features and then allocate vectors to some
11868                  * of these features based on the policy and at the end disable
11869                  * the features that did not get any vectors.
11870                  */
11871                 int vec;
11872
11873                 dev_info(&pf->pdev->dev,
11874                          "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
11875                          v_actual, v_budget);
11876                 /* reserve the misc vector */
11877                 vec = v_actual - 1;
11878
11879                 /* Scale vector usage down */
11880                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
11881                 pf->num_vmdq_vsis = 1;
11882                 pf->num_vmdq_qps = 1;
11883
11884                 /* partition out the remaining vectors */
11885                 switch (vec) {
11886                 case 2:
11887                         pf->num_lan_msix = 1;
11888                         break;
11889                 case 3:
11890                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11891                                 pf->num_lan_msix = 1;
11892                                 pf->num_iwarp_msix = 1;
11893                         } else {
11894                                 pf->num_lan_msix = 2;
11895                         }
11896                         break;
11897                 default:
11898                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11899                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
11900                                                  iwarp_requested);
11901                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
11902                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11903                         } else {
11904                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
11905                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11906                         }
11907                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11908                                 pf->num_fdsb_msix = 1;
11909                                 vec--;
11910                         }
11911                         pf->num_lan_msix = min_t(int,
11912                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
11913                                                               pf->num_lan_msix);
11914                         pf->num_lan_qps = pf->num_lan_msix;
11915                         break;
11916                 }
11917         }
11918
11919         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
11920             (pf->num_fdsb_msix == 0)) {
11921                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
11922                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
11923                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11924         }
11925         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
11926             (pf->num_vmdq_msix == 0)) {
11927                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
11928                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
11929         }
11930
11931         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
11932             (pf->num_iwarp_msix == 0)) {
11933                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
11934                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11935         }
11936         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
11937                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
11938                    pf->num_lan_msix,
11939                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
11940                    pf->num_fdsb_msix,
11941                    pf->num_iwarp_msix);
11942
11943         return v_actual;
11944 }
11945
11946 /**
11947  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
11948  * @vsi: the VSI being configured
11949  * @v_idx: index of the vector in the vsi struct
11950  *
11951  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
11952  **/
11953 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
11954 {
11955         struct i40e_q_vector *q_vector;
11956
11957         /* allocate q_vector */
11958         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
11959         if (!q_vector)
11960                 return -ENOMEM;
11961
11962         q_vector->vsi = vsi;
11963         q_vector->v_idx = v_idx;
11964         cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
11965
11966         if (vsi->netdev)
11967                 netif_napi_add(vsi->netdev, &q_vector->napi, i40e_napi_poll);
11968
11969         /* tie q_vector and vsi together */
11970         vsi->q_vectors[v_idx] = q_vector;
11971
11972         return 0;
11973 }
11974
11975 /**
11976  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
11977  * @vsi: the VSI being configured
11978  *
11979  * We allocate one q_vector per queue interrupt.  If allocation fails we
11980  * return -ENOMEM.
11981  **/
11982 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
11983 {
11984         struct i40e_pf *pf = vsi->back;
11985         int err, v_idx, num_q_vectors;
11986
11987         /* if not MSIX, give the one vector only to the LAN VSI */
11988         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11989                 num_q_vectors = vsi->num_q_vectors;
11990         else if (vsi == pf->vsi[pf->lan_vsi])
11991                 num_q_vectors = 1;
11992         else
11993                 return -EINVAL;
11994
11995         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
11996                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
11997                 if (err)
11998                         goto err_out;
11999         }
12000
12001         return 0;
12002
12003 err_out:
12004         while (v_idx--)
12005                 i40e_free_q_vector(vsi, v_idx);
12006
12007         return err;
12008 }
12009
12010 /**
12011  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
12012  * @pf: board private structure to initialize
12013  **/
12014 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
12015 {
12016         int vectors = 0;
12017         ssize_t size;
12018
12019         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
12020                 vectors = i40e_init_msix(pf);
12021                 if (vectors < 0) {
12022                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
12023                                        I40E_FLAG_IWARP_ENABLED  |
12024                                        I40E_FLAG_RSS_ENABLED    |
12025                                        I40E_FLAG_DCB_CAPABLE    |
12026                                        I40E_FLAG_DCB_ENABLED    |
12027                                        I40E_FLAG_SRIOV_ENABLED  |
12028                                        I40E_FLAG_FD_SB_ENABLED  |
12029                                        I40E_FLAG_FD_ATR_ENABLED |
12030                                        I40E_FLAG_VMDQ_ENABLED);
12031                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
12032
12033                         /* rework the queue expectations without MSIX */
12034                         i40e_determine_queue_usage(pf);
12035                 }
12036         }
12037
12038         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
12039             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
12040                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
12041                 vectors = pci_enable_msi(pf->pdev);
12042                 if (vectors < 0) {
12043                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
12044                                  vectors);
12045                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
12046                 }
12047                 vectors = 1;  /* one MSI or Legacy vector */
12048         }
12049
12050         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
12051                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
12052
12053         /* set up vector assignment tracking */
12054         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
12055         pf->irq_pile = kzalloc(size, GFP_KERNEL);
12056         if (!pf->irq_pile)
12057                 return -ENOMEM;
12058
12059         pf->irq_pile->num_entries = vectors;
12060
12061         /* track first vector for misc interrupts, ignore return */
12062         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
12063
12064         return 0;
12065 }
12066
12067 /**
12068  * i40e_restore_interrupt_scheme - Restore the interrupt scheme
12069  * @pf: private board data structure
12070  *
12071  * Restore the interrupt scheme that was cleared when we suspended the
12072  * device. This should be called during resume to re-allocate the q_vectors
12073  * and reacquire IRQs.
12074  */
12075 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf)
12076 {
12077         int err, i;
12078
12079         /* We cleared the MSI and MSI-X flags when disabling the old interrupt
12080          * scheme. We need to re-enabled them here in order to attempt to
12081          * re-acquire the MSI or MSI-X vectors
12082          */
12083         pf->flags |= (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
12084
12085         err = i40e_init_interrupt_scheme(pf);
12086         if (err)
12087                 return err;
12088
12089         /* Now that we've re-acquired IRQs, we need to remap the vectors and
12090          * rings together again.
12091          */
12092         for (i = 0; i < pf->num_alloc_vsi; i++) {
12093                 if (pf->vsi[i]) {
12094                         err = i40e_vsi_alloc_q_vectors(pf->vsi[i]);
12095                         if (err)
12096                                 goto err_unwind;
12097                         i40e_vsi_map_rings_to_vectors(pf->vsi[i]);
12098                 }
12099         }
12100
12101         err = i40e_setup_misc_vector(pf);
12102         if (err)
12103                 goto err_unwind;
12104
12105         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
12106                 i40e_client_update_msix_info(pf);
12107
12108         return 0;
12109
12110 err_unwind:
12111         while (i--) {
12112                 if (pf->vsi[i])
12113                         i40e_vsi_free_q_vectors(pf->vsi[i]);
12114         }
12115
12116         return err;
12117 }
12118
12119 /**
12120  * i40e_setup_misc_vector_for_recovery_mode - Setup the misc vector to handle
12121  * non queue events in recovery mode
12122  * @pf: board private structure
12123  *
12124  * This sets up the handler for MSIX 0 or MSI/legacy, which is used to manage
12125  * the non-queue interrupts, e.g. AdminQ and errors in recovery mode.
12126  * This is handled differently than in recovery mode since no Tx/Rx resources
12127  * are being allocated.
12128  **/
12129 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf)
12130 {
12131         int err;
12132
12133         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
12134                 err = i40e_setup_misc_vector(pf);
12135
12136                 if (err) {
12137                         dev_info(&pf->pdev->dev,
12138                                  "MSI-X misc vector request failed, error %d\n",
12139                                  err);
12140                         return err;
12141                 }
12142         } else {
12143                 u32 flags = pf->flags & I40E_FLAG_MSI_ENABLED ? 0 : IRQF_SHARED;
12144
12145                 err = request_irq(pf->pdev->irq, i40e_intr, flags,
12146                                   pf->int_name, pf);
12147
12148                 if (err) {
12149                         dev_info(&pf->pdev->dev,
12150                                  "MSI/legacy misc vector request failed, error %d\n",
12151                                  err);
12152                         return err;
12153                 }
12154                 i40e_enable_misc_int_causes(pf);
12155                 i40e_irq_dynamic_enable_icr0(pf);
12156         }
12157
12158         return 0;
12159 }
12160
12161 /**
12162  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
12163  * @pf: board private structure
12164  *
12165  * This sets up the handler for MSIX 0, which is used to manage the
12166  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
12167  * when in MSI or Legacy interrupt mode.
12168  **/
12169 static int i40e_setup_misc_vector(struct i40e_pf *pf)
12170 {
12171         struct i40e_hw *hw = &pf->hw;
12172         int err = 0;
12173
12174         /* Only request the IRQ once, the first time through. */
12175         if (!test_and_set_bit(__I40E_MISC_IRQ_REQUESTED, pf->state)) {
12176                 err = request_irq(pf->msix_entries[0].vector,
12177                                   i40e_intr, 0, pf->int_name, pf);
12178                 if (err) {
12179                         clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
12180                         dev_info(&pf->pdev->dev,
12181                                  "request_irq for %s failed: %d\n",
12182                                  pf->int_name, err);
12183                         return -EFAULT;
12184                 }
12185         }
12186
12187         i40e_enable_misc_int_causes(pf);
12188
12189         /* associate no queues to the misc vector */
12190         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
12191         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K >> 1);
12192
12193         i40e_flush(hw);
12194
12195         i40e_irq_dynamic_enable_icr0(pf);
12196
12197         return err;
12198 }
12199
12200 /**
12201  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
12202  * @vsi: Pointer to vsi structure
12203  * @seed: Buffter to store the hash keys
12204  * @lut: Buffer to store the lookup table entries
12205  * @lut_size: Size of buffer to store the lookup table entries
12206  *
12207  * Return 0 on success, negative on failure
12208  */
12209 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
12210                            u8 *lut, u16 lut_size)
12211 {
12212         struct i40e_pf *pf = vsi->back;
12213         struct i40e_hw *hw = &pf->hw;
12214         int ret = 0;
12215
12216         if (seed) {
12217                 ret = i40e_aq_get_rss_key(hw, vsi->id,
12218                         (struct i40e_aqc_get_set_rss_key_data *)seed);
12219                 if (ret) {
12220                         dev_info(&pf->pdev->dev,
12221                                  "Cannot get RSS key, err %s aq_err %s\n",
12222                                  i40e_stat_str(&pf->hw, ret),
12223                                  i40e_aq_str(&pf->hw,
12224                                              pf->hw.aq.asq_last_status));
12225                         return ret;
12226                 }
12227         }
12228
12229         if (lut) {
12230                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
12231
12232                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
12233                 if (ret) {
12234                         dev_info(&pf->pdev->dev,
12235                                  "Cannot get RSS lut, err %s aq_err %s\n",
12236                                  i40e_stat_str(&pf->hw, ret),
12237                                  i40e_aq_str(&pf->hw,
12238                                              pf->hw.aq.asq_last_status));
12239                         return ret;
12240                 }
12241         }
12242
12243         return ret;
12244 }
12245
12246 /**
12247  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
12248  * @vsi: Pointer to vsi structure
12249  * @seed: RSS hash seed
12250  * @lut: Lookup table
12251  * @lut_size: Lookup table size
12252  *
12253  * Returns 0 on success, negative on failure
12254  **/
12255 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
12256                                const u8 *lut, u16 lut_size)
12257 {
12258         struct i40e_pf *pf = vsi->back;
12259         struct i40e_hw *hw = &pf->hw;
12260         u16 vf_id = vsi->vf_id;
12261         u8 i;
12262
12263         /* Fill out hash function seed */
12264         if (seed) {
12265                 u32 *seed_dw = (u32 *)seed;
12266
12267                 if (vsi->type == I40E_VSI_MAIN) {
12268                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
12269                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
12270                 } else if (vsi->type == I40E_VSI_SRIOV) {
12271                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
12272                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
12273                 } else {
12274                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
12275                 }
12276         }
12277
12278         if (lut) {
12279                 u32 *lut_dw = (u32 *)lut;
12280
12281                 if (vsi->type == I40E_VSI_MAIN) {
12282                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
12283                                 return -EINVAL;
12284                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12285                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
12286                 } else if (vsi->type == I40E_VSI_SRIOV) {
12287                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
12288                                 return -EINVAL;
12289                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12290                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
12291                 } else {
12292                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12293                 }
12294         }
12295         i40e_flush(hw);
12296
12297         return 0;
12298 }
12299
12300 /**
12301  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
12302  * @vsi: Pointer to VSI structure
12303  * @seed: Buffer to store the keys
12304  * @lut: Buffer to store the lookup table entries
12305  * @lut_size: Size of buffer to store the lookup table entries
12306  *
12307  * Returns 0 on success, negative on failure
12308  */
12309 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
12310                             u8 *lut, u16 lut_size)
12311 {
12312         struct i40e_pf *pf = vsi->back;
12313         struct i40e_hw *hw = &pf->hw;
12314         u16 i;
12315
12316         if (seed) {
12317                 u32 *seed_dw = (u32 *)seed;
12318
12319                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
12320                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
12321         }
12322         if (lut) {
12323                 u32 *lut_dw = (u32 *)lut;
12324
12325                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
12326                         return -EINVAL;
12327                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12328                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
12329         }
12330
12331         return 0;
12332 }
12333
12334 /**
12335  * i40e_config_rss - Configure RSS keys and lut
12336  * @vsi: Pointer to VSI structure
12337  * @seed: RSS hash seed
12338  * @lut: Lookup table
12339  * @lut_size: Lookup table size
12340  *
12341  * Returns 0 on success, negative on failure
12342  */
12343 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
12344 {
12345         struct i40e_pf *pf = vsi->back;
12346
12347         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
12348                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
12349         else
12350                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
12351 }
12352
12353 /**
12354  * i40e_get_rss - Get RSS keys and lut
12355  * @vsi: Pointer to VSI structure
12356  * @seed: Buffer to store the keys
12357  * @lut: Buffer to store the lookup table entries
12358  * @lut_size: Size of buffer to store the lookup table entries
12359  *
12360  * Returns 0 on success, negative on failure
12361  */
12362 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
12363 {
12364         struct i40e_pf *pf = vsi->back;
12365
12366         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
12367                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
12368         else
12369                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
12370 }
12371
12372 /**
12373  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
12374  * @pf: Pointer to board private structure
12375  * @lut: Lookup table
12376  * @rss_table_size: Lookup table size
12377  * @rss_size: Range of queue number for hashing
12378  */
12379 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
12380                        u16 rss_table_size, u16 rss_size)
12381 {
12382         u16 i;
12383
12384         for (i = 0; i < rss_table_size; i++)
12385                 lut[i] = i % rss_size;
12386 }
12387
12388 /**
12389  * i40e_pf_config_rss - Prepare for RSS if used
12390  * @pf: board private structure
12391  **/
12392 static int i40e_pf_config_rss(struct i40e_pf *pf)
12393 {
12394         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
12395         u8 seed[I40E_HKEY_ARRAY_SIZE];
12396         u8 *lut;
12397         struct i40e_hw *hw = &pf->hw;
12398         u32 reg_val;
12399         u64 hena;
12400         int ret;
12401
12402         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
12403         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
12404                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
12405         hena |= i40e_pf_get_default_rss_hena(pf);
12406
12407         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
12408         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
12409
12410         /* Determine the RSS table size based on the hardware capabilities */
12411         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
12412         reg_val = (pf->rss_table_size == 512) ?
12413                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
12414                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
12415         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
12416
12417         /* Determine the RSS size of the VSI */
12418         if (!vsi->rss_size) {
12419                 u16 qcount;
12420                 /* If the firmware does something weird during VSI init, we
12421                  * could end up with zero TCs. Check for that to avoid
12422                  * divide-by-zero. It probably won't pass traffic, but it also
12423                  * won't panic.
12424                  */
12425                 qcount = vsi->num_queue_pairs /
12426                          (vsi->tc_config.numtc ? vsi->tc_config.numtc : 1);
12427                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
12428         }
12429         if (!vsi->rss_size)
12430                 return -EINVAL;
12431
12432         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
12433         if (!lut)
12434                 return -ENOMEM;
12435
12436         /* Use user configured lut if there is one, otherwise use default */
12437         if (vsi->rss_lut_user)
12438                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
12439         else
12440                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
12441
12442         /* Use user configured hash key if there is one, otherwise
12443          * use default.
12444          */
12445         if (vsi->rss_hkey_user)
12446                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
12447         else
12448                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
12449         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
12450         kfree(lut);
12451
12452         return ret;
12453 }
12454
12455 /**
12456  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
12457  * @pf: board private structure
12458  * @queue_count: the requested queue count for rss.
12459  *
12460  * returns 0 if rss is not enabled, if enabled returns the final rss queue
12461  * count which may be different from the requested queue count.
12462  * Note: expects to be called while under rtnl_lock()
12463  **/
12464 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
12465 {
12466         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
12467         int new_rss_size;
12468
12469         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
12470                 return 0;
12471
12472         queue_count = min_t(int, queue_count, num_online_cpus());
12473         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
12474
12475         if (queue_count != vsi->num_queue_pairs) {
12476                 u16 qcount;
12477
12478                 vsi->req_queue_pairs = queue_count;
12479                 i40e_prep_for_reset(pf);
12480                 if (test_bit(__I40E_IN_REMOVE, pf->state))
12481                         return pf->alloc_rss_size;
12482
12483                 pf->alloc_rss_size = new_rss_size;
12484
12485                 i40e_reset_and_rebuild(pf, true, true);
12486
12487                 /* Discard the user configured hash keys and lut, if less
12488                  * queues are enabled.
12489                  */
12490                 if (queue_count < vsi->rss_size) {
12491                         i40e_clear_rss_config_user(vsi);
12492                         dev_dbg(&pf->pdev->dev,
12493                                 "discard user configured hash keys and lut\n");
12494                 }
12495
12496                 /* Reset vsi->rss_size, as number of enabled queues changed */
12497                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
12498                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
12499
12500                 i40e_pf_config_rss(pf);
12501         }
12502         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
12503                  vsi->req_queue_pairs, pf->rss_size_max);
12504         return pf->alloc_rss_size;
12505 }
12506
12507 /**
12508  * i40e_get_partition_bw_setting - Retrieve BW settings for this PF partition
12509  * @pf: board private structure
12510  **/
12511 i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
12512 {
12513         i40e_status status;
12514         bool min_valid, max_valid;
12515         u32 max_bw, min_bw;
12516
12517         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
12518                                            &min_valid, &max_valid);
12519
12520         if (!status) {
12521                 if (min_valid)
12522                         pf->min_bw = min_bw;
12523                 if (max_valid)
12524                         pf->max_bw = max_bw;
12525         }
12526
12527         return status;
12528 }
12529
12530 /**
12531  * i40e_set_partition_bw_setting - Set BW settings for this PF partition
12532  * @pf: board private structure
12533  **/
12534 i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
12535 {
12536         struct i40e_aqc_configure_partition_bw_data bw_data;
12537         i40e_status status;
12538
12539         memset(&bw_data, 0, sizeof(bw_data));
12540
12541         /* Set the valid bit for this PF */
12542         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
12543         bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
12544         bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;
12545
12546         /* Set the new bandwidths */
12547         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
12548
12549         return status;
12550 }
12551
12552 /**
12553  * i40e_commit_partition_bw_setting - Commit BW settings for this PF partition
12554  * @pf: board private structure
12555  **/
12556 i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
12557 {
12558         /* Commit temporary BW setting to permanent NVM image */
12559         enum i40e_admin_queue_err last_aq_status;
12560         i40e_status ret;
12561         u16 nvm_word;
12562
12563         if (pf->hw.partition_id != 1) {
12564                 dev_info(&pf->pdev->dev,
12565                          "Commit BW only works on partition 1! This is partition %d",
12566                          pf->hw.partition_id);
12567                 ret = I40E_NOT_SUPPORTED;
12568                 goto bw_commit_out;
12569         }
12570
12571         /* Acquire NVM for read access */
12572         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
12573         last_aq_status = pf->hw.aq.asq_last_status;
12574         if (ret) {
12575                 dev_info(&pf->pdev->dev,
12576                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
12577                          i40e_stat_str(&pf->hw, ret),
12578                          i40e_aq_str(&pf->hw, last_aq_status));
12579                 goto bw_commit_out;
12580         }
12581
12582         /* Read word 0x10 of NVM - SW compatibility word 1 */
12583         ret = i40e_aq_read_nvm(&pf->hw,
12584                                I40E_SR_NVM_CONTROL_WORD,
12585                                0x10, sizeof(nvm_word), &nvm_word,
12586                                false, NULL);
12587         /* Save off last admin queue command status before releasing
12588          * the NVM
12589          */
12590         last_aq_status = pf->hw.aq.asq_last_status;
12591         i40e_release_nvm(&pf->hw);
12592         if (ret) {
12593                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
12594                          i40e_stat_str(&pf->hw, ret),
12595                          i40e_aq_str(&pf->hw, last_aq_status));
12596                 goto bw_commit_out;
12597         }
12598
12599         /* Wait a bit for NVM release to complete */
12600         msleep(50);
12601
12602         /* Acquire NVM for write access */
12603         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
12604         last_aq_status = pf->hw.aq.asq_last_status;
12605         if (ret) {
12606                 dev_info(&pf->pdev->dev,
12607                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
12608                          i40e_stat_str(&pf->hw, ret),
12609                          i40e_aq_str(&pf->hw, last_aq_status));
12610                 goto bw_commit_out;
12611         }
12612         /* Write it back out unchanged to initiate update NVM,
12613          * which will force a write of the shadow (alt) RAM to
12614          * the NVM - thus storing the bandwidth values permanently.
12615          */
12616         ret = i40e_aq_update_nvm(&pf->hw,
12617                                  I40E_SR_NVM_CONTROL_WORD,
12618                                  0x10, sizeof(nvm_word),
12619                                  &nvm_word, true, 0, NULL);
12620         /* Save off last admin queue command status before releasing
12621          * the NVM
12622          */
12623         last_aq_status = pf->hw.aq.asq_last_status;
12624         i40e_release_nvm(&pf->hw);
12625         if (ret)
12626                 dev_info(&pf->pdev->dev,
12627                          "BW settings NOT SAVED, err %s aq_err %s\n",
12628                          i40e_stat_str(&pf->hw, ret),
12629                          i40e_aq_str(&pf->hw, last_aq_status));
12630 bw_commit_out:
12631
12632         return ret;
12633 }
12634
12635 /**
12636  * i40e_is_total_port_shutdown_enabled - read NVM and return value
12637  * if total port shutdown feature is enabled for this PF
12638  * @pf: board private structure
12639  **/
12640 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf)
12641 {
12642 #define I40E_TOTAL_PORT_SHUTDOWN_ENABLED        BIT(4)
12643 #define I40E_FEATURES_ENABLE_PTR                0x2A
12644 #define I40E_CURRENT_SETTING_PTR                0x2B
12645 #define I40E_LINK_BEHAVIOR_WORD_OFFSET          0x2D
12646 #define I40E_LINK_BEHAVIOR_WORD_LENGTH          0x1
12647 #define I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED    BIT(0)
12648 #define I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH      4
12649         i40e_status read_status = I40E_SUCCESS;
12650         u16 sr_emp_sr_settings_ptr = 0;
12651         u16 features_enable = 0;
12652         u16 link_behavior = 0;
12653         bool ret = false;
12654
12655         read_status = i40e_read_nvm_word(&pf->hw,
12656                                          I40E_SR_EMP_SR_SETTINGS_PTR,
12657                                          &sr_emp_sr_settings_ptr);
12658         if (read_status)
12659                 goto err_nvm;
12660         read_status = i40e_read_nvm_word(&pf->hw,
12661                                          sr_emp_sr_settings_ptr +
12662                                          I40E_FEATURES_ENABLE_PTR,
12663                                          &features_enable);
12664         if (read_status)
12665                 goto err_nvm;
12666         if (I40E_TOTAL_PORT_SHUTDOWN_ENABLED & features_enable) {
12667                 read_status = i40e_read_nvm_module_data(&pf->hw,
12668                                                         I40E_SR_EMP_SR_SETTINGS_PTR,
12669                                                         I40E_CURRENT_SETTING_PTR,
12670                                                         I40E_LINK_BEHAVIOR_WORD_OFFSET,
12671                                                         I40E_LINK_BEHAVIOR_WORD_LENGTH,
12672                                                         &link_behavior);
12673                 if (read_status)
12674                         goto err_nvm;
12675                 link_behavior >>= (pf->hw.port * I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH);
12676                 ret = I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED & link_behavior;
12677         }
12678         return ret;
12679
12680 err_nvm:
12681         dev_warn(&pf->pdev->dev,
12682                  "total-port-shutdown feature is off due to read nvm error: %s\n",
12683                  i40e_stat_str(&pf->hw, read_status));
12684         return ret;
12685 }
12686
12687 /**
12688  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
12689  * @pf: board private structure to initialize
12690  *
12691  * i40e_sw_init initializes the Adapter private data structure.
12692  * Fields are initialized based on PCI device information and
12693  * OS network device settings (MTU size).
12694  **/
12695 static int i40e_sw_init(struct i40e_pf *pf)
12696 {
12697         int err = 0;
12698         int size;
12699         u16 pow;
12700
12701         /* Set default capability flags */
12702         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
12703                     I40E_FLAG_MSI_ENABLED     |
12704                     I40E_FLAG_MSIX_ENABLED;
12705
12706         /* Set default ITR */
12707         pf->rx_itr_default = I40E_ITR_RX_DEF;
12708         pf->tx_itr_default = I40E_ITR_TX_DEF;
12709
12710         /* Depending on PF configurations, it is possible that the RSS
12711          * maximum might end up larger than the available queues
12712          */
12713         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
12714         pf->alloc_rss_size = 1;
12715         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
12716         pf->rss_size_max = min_t(int, pf->rss_size_max,
12717                                  pf->hw.func_caps.num_tx_qp);
12718
12719         /* find the next higher power-of-2 of num cpus */
12720         pow = roundup_pow_of_two(num_online_cpus());
12721         pf->rss_size_max = min_t(int, pf->rss_size_max, pow);
12722
12723         if (pf->hw.func_caps.rss) {
12724                 pf->flags |= I40E_FLAG_RSS_ENABLED;
12725                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
12726                                            num_online_cpus());
12727         }
12728
12729         /* MFP mode enabled */
12730         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
12731                 pf->flags |= I40E_FLAG_MFP_ENABLED;
12732                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
12733                 if (i40e_get_partition_bw_setting(pf)) {
12734                         dev_warn(&pf->pdev->dev,
12735                                  "Could not get partition bw settings\n");
12736                 } else {
12737                         dev_info(&pf->pdev->dev,
12738                                  "Partition BW Min = %8.8x, Max = %8.8x\n",
12739                                  pf->min_bw, pf->max_bw);
12740
12741                         /* nudge the Tx scheduler */
12742                         i40e_set_partition_bw_setting(pf);
12743                 }
12744         }
12745
12746         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
12747             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
12748                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
12749                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
12750                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
12751                     pf->hw.num_partitions > 1)
12752                         dev_info(&pf->pdev->dev,
12753                                  "Flow Director Sideband mode Disabled in MFP mode\n");
12754                 else
12755                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12756                 pf->fdir_pf_filter_count =
12757                                  pf->hw.func_caps.fd_filters_guaranteed;
12758                 pf->hw.fdir_shared_filter_count =
12759                                  pf->hw.func_caps.fd_filters_best_effort;
12760         }
12761
12762         if (pf->hw.mac.type == I40E_MAC_X722) {
12763                 pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
12764                                     I40E_HW_128_QP_RSS_CAPABLE |
12765                                     I40E_HW_ATR_EVICT_CAPABLE |
12766                                     I40E_HW_WB_ON_ITR_CAPABLE |
12767                                     I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
12768                                     I40E_HW_NO_PCI_LINK_CHECK |
12769                                     I40E_HW_USE_SET_LLDP_MIB |
12770                                     I40E_HW_GENEVE_OFFLOAD_CAPABLE |
12771                                     I40E_HW_PTP_L4_CAPABLE |
12772                                     I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
12773                                     I40E_HW_OUTER_UDP_CSUM_CAPABLE);
12774
12775 #define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
12776                 if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
12777                     I40E_FDEVICT_PCTYPE_DEFAULT) {
12778                         dev_warn(&pf->pdev->dev,
12779                                  "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
12780                         pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
12781                 }
12782         } else if ((pf->hw.aq.api_maj_ver > 1) ||
12783                    ((pf->hw.aq.api_maj_ver == 1) &&
12784                     (pf->hw.aq.api_min_ver > 4))) {
12785                 /* Supported in FW API version higher than 1.4 */
12786                 pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
12787         }
12788
12789         /* Enable HW ATR eviction if possible */
12790         if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
12791                 pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;
12792
12793         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12794             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
12795             (pf->hw.aq.fw_maj_ver < 4))) {
12796                 pf->hw_features |= I40E_HW_RESTART_AUTONEG;
12797                 /* No DCB support  for FW < v4.33 */
12798                 pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
12799         }
12800
12801         /* Disable FW LLDP if FW < v4.3 */
12802         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12803             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
12804             (pf->hw.aq.fw_maj_ver < 4)))
12805                 pf->hw_features |= I40E_HW_STOP_FW_LLDP;
12806
12807         /* Use the FW Set LLDP MIB API if FW > v4.40 */
12808         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12809             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
12810             (pf->hw.aq.fw_maj_ver >= 5)))
12811                 pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;
12812
12813         /* Enable PTP L4 if FW > v6.0 */
12814         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12815             pf->hw.aq.fw_maj_ver >= 6)
12816                 pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;
12817
12818         if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
12819                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
12820                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
12821                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
12822         }
12823
12824         if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
12825                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
12826                 /* IWARP needs one extra vector for CQP just like MISC.*/
12827                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
12828         }
12829         /* Stopping FW LLDP engine is supported on XL710 and X722
12830          * starting from FW versions determined in i40e_init_adminq.
12831          * Stopping the FW LLDP engine is not supported on XL710
12832          * if NPAR is functioning so unset this hw flag in this case.
12833          */
12834         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12835             pf->hw.func_caps.npar_enable &&
12836             (pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE))
12837                 pf->hw.flags &= ~I40E_HW_FLAG_FW_LLDP_STOPPABLE;
12838
12839 #ifdef CONFIG_PCI_IOV
12840         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
12841                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
12842                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
12843                 pf->num_req_vfs = min_t(int,
12844                                         pf->hw.func_caps.num_vfs,
12845                                         I40E_MAX_VF_COUNT);
12846         }
12847 #endif /* CONFIG_PCI_IOV */
12848         pf->eeprom_version = 0xDEAD;
12849         pf->lan_veb = I40E_NO_VEB;
12850         pf->lan_vsi = I40E_NO_VSI;
12851
12852         /* By default FW has this off for performance reasons */
12853         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
12854
12855         /* set up queue assignment tracking */
12856         size = sizeof(struct i40e_lump_tracking)
12857                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
12858         pf->qp_pile = kzalloc(size, GFP_KERNEL);
12859         if (!pf->qp_pile) {
12860                 err = -ENOMEM;
12861                 goto sw_init_done;
12862         }
12863         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
12864
12865         pf->tx_timeout_recovery_level = 1;
12866
12867         if (pf->hw.mac.type != I40E_MAC_X722 &&
12868             i40e_is_total_port_shutdown_enabled(pf)) {
12869                 /* Link down on close must be on when total port shutdown
12870                  * is enabled for a given port
12871                  */
12872                 pf->flags |= (I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED |
12873                               I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED);
12874                 dev_info(&pf->pdev->dev,
12875                          "total-port-shutdown was enabled, link-down-on-close is forced on\n");
12876         }
12877         mutex_init(&pf->switch_mutex);
12878
12879 sw_init_done:
12880         return err;
12881 }
12882
12883 /**
12884  * i40e_set_ntuple - set the ntuple feature flag and take action
12885  * @pf: board private structure to initialize
12886  * @features: the feature set that the stack is suggesting
12887  *
12888  * returns a bool to indicate if reset needs to happen
12889  **/
12890 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
12891 {
12892         bool need_reset = false;
12893
12894         /* Check if Flow Director n-tuple support was enabled or disabled.  If
12895          * the state changed, we need to reset.
12896          */
12897         if (features & NETIF_F_NTUPLE) {
12898                 /* Enable filters and mark for reset */
12899                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
12900                         need_reset = true;
12901                 /* enable FD_SB only if there is MSI-X vector and no cloud
12902                  * filters exist
12903                  */
12904                 if (pf->num_fdsb_msix > 0 && !pf->num_cloud_filters) {
12905                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12906                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
12907                 }
12908         } else {
12909                 /* turn off filters, mark for reset and clear SW filter list */
12910                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
12911                         need_reset = true;
12912                         i40e_fdir_filter_exit(pf);
12913                 }
12914                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
12915                 clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state);
12916                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
12917
12918                 /* reset fd counters */
12919                 pf->fd_add_err = 0;
12920                 pf->fd_atr_cnt = 0;
12921                 /* if ATR was auto disabled it can be re-enabled. */
12922                 if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
12923                         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
12924                             (I40E_DEBUG_FD & pf->hw.debug_mask))
12925                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
12926         }
12927         return need_reset;
12928 }
12929
12930 /**
12931  * i40e_clear_rss_lut - clear the rx hash lookup table
12932  * @vsi: the VSI being configured
12933  **/
12934 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
12935 {
12936         struct i40e_pf *pf = vsi->back;
12937         struct i40e_hw *hw = &pf->hw;
12938         u16 vf_id = vsi->vf_id;
12939         u8 i;
12940
12941         if (vsi->type == I40E_VSI_MAIN) {
12942                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12943                         wr32(hw, I40E_PFQF_HLUT(i), 0);
12944         } else if (vsi->type == I40E_VSI_SRIOV) {
12945                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12946                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
12947         } else {
12948                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12949         }
12950 }
12951
12952 /**
12953  * i40e_set_loopback - turn on/off loopback mode on underlying PF
12954  * @vsi: ptr to VSI
12955  * @ena: flag to indicate the on/off setting
12956  */
12957 static int i40e_set_loopback(struct i40e_vsi *vsi, bool ena)
12958 {
12959         bool if_running = netif_running(vsi->netdev) &&
12960                           !test_and_set_bit(__I40E_VSI_DOWN, vsi->state);
12961         int ret;
12962
12963         if (if_running)
12964                 i40e_down(vsi);
12965
12966         ret = i40e_aq_set_mac_loopback(&vsi->back->hw, ena, NULL);
12967         if (ret)
12968                 netdev_err(vsi->netdev, "Failed to toggle loopback state\n");
12969         if (if_running)
12970                 i40e_up(vsi);
12971
12972         return ret;
12973 }
12974
12975 /**
12976  * i40e_set_features - set the netdev feature flags
12977  * @netdev: ptr to the netdev being adjusted
12978  * @features: the feature set that the stack is suggesting
12979  * Note: expects to be called while under rtnl_lock()
12980  **/
12981 static int i40e_set_features(struct net_device *netdev,
12982                              netdev_features_t features)
12983 {
12984         struct i40e_netdev_priv *np = netdev_priv(netdev);
12985         struct i40e_vsi *vsi = np->vsi;
12986         struct i40e_pf *pf = vsi->back;
12987         bool need_reset;
12988
12989         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
12990                 i40e_pf_config_rss(pf);
12991         else if (!(features & NETIF_F_RXHASH) &&
12992                  netdev->features & NETIF_F_RXHASH)
12993                 i40e_clear_rss_lut(vsi);
12994
12995         if (features & NETIF_F_HW_VLAN_CTAG_RX)
12996                 i40e_vlan_stripping_enable(vsi);
12997         else
12998                 i40e_vlan_stripping_disable(vsi);
12999
13000         if (!(features & NETIF_F_HW_TC) &&
13001             (netdev->features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
13002                 dev_err(&pf->pdev->dev,
13003                         "Offloaded tc filters active, can't turn hw_tc_offload off");
13004                 return -EINVAL;
13005         }
13006
13007         if (!(features & NETIF_F_HW_L2FW_DOFFLOAD) && vsi->macvlan_cnt)
13008                 i40e_del_all_macvlans(vsi);
13009
13010         need_reset = i40e_set_ntuple(pf, features);
13011
13012         if (need_reset)
13013                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
13014
13015         if ((features ^ netdev->features) & NETIF_F_LOOPBACK)
13016                 return i40e_set_loopback(vsi, !!(features & NETIF_F_LOOPBACK));
13017
13018         return 0;
13019 }
13020
13021 static int i40e_udp_tunnel_set_port(struct net_device *netdev,
13022                                     unsigned int table, unsigned int idx,
13023                                     struct udp_tunnel_info *ti)
13024 {
13025         struct i40e_netdev_priv *np = netdev_priv(netdev);
13026         struct i40e_hw *hw = &np->vsi->back->hw;
13027         u8 type, filter_index;
13028         i40e_status ret;
13029
13030         type = ti->type == UDP_TUNNEL_TYPE_VXLAN ? I40E_AQC_TUNNEL_TYPE_VXLAN :
13031                                                    I40E_AQC_TUNNEL_TYPE_NGE;
13032
13033         ret = i40e_aq_add_udp_tunnel(hw, ntohs(ti->port), type, &filter_index,
13034                                      NULL);
13035         if (ret) {
13036                 netdev_info(netdev, "add UDP port failed, err %s aq_err %s\n",
13037                             i40e_stat_str(hw, ret),
13038                             i40e_aq_str(hw, hw->aq.asq_last_status));
13039                 return -EIO;
13040         }
13041
13042         udp_tunnel_nic_set_port_priv(netdev, table, idx, filter_index);
13043         return 0;
13044 }
13045
13046 static int i40e_udp_tunnel_unset_port(struct net_device *netdev,
13047                                       unsigned int table, unsigned int idx,
13048                                       struct udp_tunnel_info *ti)
13049 {
13050         struct i40e_netdev_priv *np = netdev_priv(netdev);
13051         struct i40e_hw *hw = &np->vsi->back->hw;
13052         i40e_status ret;
13053
13054         ret = i40e_aq_del_udp_tunnel(hw, ti->hw_priv, NULL);
13055         if (ret) {
13056                 netdev_info(netdev, "delete UDP port failed, err %s aq_err %s\n",
13057                             i40e_stat_str(hw, ret),
13058                             i40e_aq_str(hw, hw->aq.asq_last_status));
13059                 return -EIO;
13060         }
13061
13062         return 0;
13063 }
13064
13065 static int i40e_get_phys_port_id(struct net_device *netdev,
13066                                  struct netdev_phys_item_id *ppid)
13067 {
13068         struct i40e_netdev_priv *np = netdev_priv(netdev);
13069         struct i40e_pf *pf = np->vsi->back;
13070         struct i40e_hw *hw = &pf->hw;
13071
13072         if (!(pf->hw_features & I40E_HW_PORT_ID_VALID))
13073                 return -EOPNOTSUPP;
13074
13075         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
13076         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
13077
13078         return 0;
13079 }
13080
13081 /**
13082  * i40e_ndo_fdb_add - add an entry to the hardware database
13083  * @ndm: the input from the stack
13084  * @tb: pointer to array of nladdr (unused)
13085  * @dev: the net device pointer
13086  * @addr: the MAC address entry being added
13087  * @vid: VLAN ID
13088  * @flags: instructions from stack about fdb operation
13089  * @extack: netlink extended ack, unused currently
13090  */
13091 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
13092                             struct net_device *dev,
13093                             const unsigned char *addr, u16 vid,
13094                             u16 flags,
13095                             struct netlink_ext_ack *extack)
13096 {
13097         struct i40e_netdev_priv *np = netdev_priv(dev);
13098         struct i40e_pf *pf = np->vsi->back;
13099         int err = 0;
13100
13101         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
13102                 return -EOPNOTSUPP;
13103
13104         if (vid) {
13105                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
13106                 return -EINVAL;
13107         }
13108
13109         /* Hardware does not support aging addresses so if a
13110          * ndm_state is given only allow permanent addresses
13111          */
13112         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
13113                 netdev_info(dev, "FDB only supports static addresses\n");
13114                 return -EINVAL;
13115         }
13116
13117         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
13118                 err = dev_uc_add_excl(dev, addr);
13119         else if (is_multicast_ether_addr(addr))
13120                 err = dev_mc_add_excl(dev, addr);
13121         else
13122                 err = -EINVAL;
13123
13124         /* Only return duplicate errors if NLM_F_EXCL is set */
13125         if (err == -EEXIST && !(flags & NLM_F_EXCL))
13126                 err = 0;
13127
13128         return err;
13129 }
13130
13131 /**
13132  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
13133  * @dev: the netdev being configured
13134  * @nlh: RTNL message
13135  * @flags: bridge flags
13136  * @extack: netlink extended ack
13137  *
13138  * Inserts a new hardware bridge if not already created and
13139  * enables the bridging mode requested (VEB or VEPA). If the
13140  * hardware bridge has already been inserted and the request
13141  * is to change the mode then that requires a PF reset to
13142  * allow rebuild of the components with required hardware
13143  * bridge mode enabled.
13144  *
13145  * Note: expects to be called while under rtnl_lock()
13146  **/
13147 static int i40e_ndo_bridge_setlink(struct net_device *dev,
13148                                    struct nlmsghdr *nlh,
13149                                    u16 flags,
13150                                    struct netlink_ext_ack *extack)
13151 {
13152         struct i40e_netdev_priv *np = netdev_priv(dev);
13153         struct i40e_vsi *vsi = np->vsi;
13154         struct i40e_pf *pf = vsi->back;
13155         struct i40e_veb *veb = NULL;
13156         struct nlattr *attr, *br_spec;
13157         int i, rem;
13158
13159         /* Only for PF VSI for now */
13160         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
13161                 return -EOPNOTSUPP;
13162
13163         /* Find the HW bridge for PF VSI */
13164         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
13165                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
13166                         veb = pf->veb[i];
13167         }
13168
13169         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
13170
13171         nla_for_each_nested(attr, br_spec, rem) {
13172                 __u16 mode;
13173
13174                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
13175                         continue;
13176
13177                 mode = nla_get_u16(attr);
13178                 if ((mode != BRIDGE_MODE_VEPA) &&
13179                     (mode != BRIDGE_MODE_VEB))
13180                         return -EINVAL;
13181
13182                 /* Insert a new HW bridge */
13183                 if (!veb) {
13184                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
13185                                              vsi->tc_config.enabled_tc);
13186                         if (veb) {
13187                                 veb->bridge_mode = mode;
13188                                 i40e_config_bridge_mode(veb);
13189                         } else {
13190                                 /* No Bridge HW offload available */
13191                                 return -ENOENT;
13192                         }
13193                         break;
13194                 } else if (mode != veb->bridge_mode) {
13195                         /* Existing HW bridge but different mode needs reset */
13196                         veb->bridge_mode = mode;
13197                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
13198                         if (mode == BRIDGE_MODE_VEB)
13199                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
13200                         else
13201                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
13202                         i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
13203                         break;
13204                 }
13205         }
13206
13207         return 0;
13208 }
13209
13210 /**
13211  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
13212  * @skb: skb buff
13213  * @pid: process id
13214  * @seq: RTNL message seq #
13215  * @dev: the netdev being configured
13216  * @filter_mask: unused
13217  * @nlflags: netlink flags passed in
13218  *
13219  * Return the mode in which the hardware bridge is operating in
13220  * i.e VEB or VEPA.
13221  **/
13222 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
13223                                    struct net_device *dev,
13224                                    u32 __always_unused filter_mask,
13225                                    int nlflags)
13226 {
13227         struct i40e_netdev_priv *np = netdev_priv(dev);
13228         struct i40e_vsi *vsi = np->vsi;
13229         struct i40e_pf *pf = vsi->back;
13230         struct i40e_veb *veb = NULL;
13231         int i;
13232
13233         /* Only for PF VSI for now */
13234         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
13235                 return -EOPNOTSUPP;
13236
13237         /* Find the HW bridge for the PF VSI */
13238         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
13239                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
13240                         veb = pf->veb[i];
13241         }
13242
13243         if (!veb)
13244                 return 0;
13245
13246         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
13247                                        0, 0, nlflags, filter_mask, NULL);
13248 }
13249
13250 /**
13251  * i40e_features_check - Validate encapsulated packet conforms to limits
13252  * @skb: skb buff
13253  * @dev: This physical port's netdev
13254  * @features: Offload features that the stack believes apply
13255  **/
13256 static netdev_features_t i40e_features_check(struct sk_buff *skb,
13257                                              struct net_device *dev,
13258                                              netdev_features_t features)
13259 {
13260         size_t len;
13261
13262         /* No point in doing any of this if neither checksum nor GSO are
13263          * being requested for this frame.  We can rule out both by just
13264          * checking for CHECKSUM_PARTIAL
13265          */
13266         if (skb->ip_summed != CHECKSUM_PARTIAL)
13267                 return features;
13268
13269         /* We cannot support GSO if the MSS is going to be less than
13270          * 64 bytes.  If it is then we need to drop support for GSO.
13271          */
13272         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
13273                 features &= ~NETIF_F_GSO_MASK;
13274
13275         /* MACLEN can support at most 63 words */
13276         len = skb_network_header(skb) - skb->data;
13277         if (len & ~(63 * 2))
13278                 goto out_err;
13279
13280         /* IPLEN and EIPLEN can support at most 127 dwords */
13281         len = skb_transport_header(skb) - skb_network_header(skb);
13282         if (len & ~(127 * 4))
13283                 goto out_err;
13284
13285         if (skb->encapsulation) {
13286                 /* L4TUNLEN can support 127 words */
13287                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
13288                 if (len & ~(127 * 2))
13289                         goto out_err;
13290
13291                 /* IPLEN can support at most 127 dwords */
13292                 len = skb_inner_transport_header(skb) -
13293                       skb_inner_network_header(skb);
13294                 if (len & ~(127 * 4))
13295                         goto out_err;
13296         }
13297
13298         /* No need to validate L4LEN as TCP is the only protocol with a
13299          * flexible value and we support all possible values supported
13300          * by TCP, which is at most 15 dwords
13301          */
13302
13303         return features;
13304 out_err:
13305         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
13306 }
13307
13308 /**
13309  * i40e_xdp_setup - add/remove an XDP program
13310  * @vsi: VSI to changed
13311  * @prog: XDP program
13312  * @extack: netlink extended ack
13313  **/
13314 static int i40e_xdp_setup(struct i40e_vsi *vsi, struct bpf_prog *prog,
13315                           struct netlink_ext_ack *extack)
13316 {
13317         int frame_size = vsi->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
13318         struct i40e_pf *pf = vsi->back;
13319         struct bpf_prog *old_prog;
13320         bool need_reset;
13321         int i;
13322
13323         /* Don't allow frames that span over multiple buffers */
13324         if (frame_size > i40e_calculate_vsi_rx_buf_len(vsi)) {
13325                 NL_SET_ERR_MSG_MOD(extack, "MTU too large to enable XDP");
13326                 return -EINVAL;
13327         }
13328
13329         /* When turning XDP on->off/off->on we reset and rebuild the rings. */
13330         need_reset = (i40e_enabled_xdp_vsi(vsi) != !!prog);
13331
13332         if (need_reset)
13333                 i40e_prep_for_reset(pf);
13334
13335         /* VSI shall be deleted in a moment, just return EINVAL */
13336         if (test_bit(__I40E_IN_REMOVE, pf->state))
13337                 return -EINVAL;
13338
13339         old_prog = xchg(&vsi->xdp_prog, prog);
13340
13341         if (need_reset) {
13342                 if (!prog)
13343                         /* Wait until ndo_xsk_wakeup completes. */
13344                         synchronize_rcu();
13345                 i40e_reset_and_rebuild(pf, true, true);
13346         }
13347
13348         if (!i40e_enabled_xdp_vsi(vsi) && prog) {
13349                 if (i40e_realloc_rx_bi_zc(vsi, true))
13350                         return -ENOMEM;
13351         } else if (i40e_enabled_xdp_vsi(vsi) && !prog) {
13352                 if (i40e_realloc_rx_bi_zc(vsi, false))
13353                         return -ENOMEM;
13354         }
13355
13356         for (i = 0; i < vsi->num_queue_pairs; i++)
13357                 WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
13358
13359         if (old_prog)
13360                 bpf_prog_put(old_prog);
13361
13362         /* Kick start the NAPI context if there is an AF_XDP socket open
13363          * on that queue id. This so that receiving will start.
13364          */
13365         if (need_reset && prog)
13366                 for (i = 0; i < vsi->num_queue_pairs; i++)
13367                         if (vsi->xdp_rings[i]->xsk_pool)
13368                                 (void)i40e_xsk_wakeup(vsi->netdev, i,
13369                                                       XDP_WAKEUP_RX);
13370
13371         return 0;
13372 }
13373
13374 /**
13375  * i40e_enter_busy_conf - Enters busy config state
13376  * @vsi: vsi
13377  *
13378  * Returns 0 on success, <0 for failure.
13379  **/
13380 static int i40e_enter_busy_conf(struct i40e_vsi *vsi)
13381 {
13382         struct i40e_pf *pf = vsi->back;
13383         int timeout = 50;
13384
13385         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
13386                 timeout--;
13387                 if (!timeout)
13388                         return -EBUSY;
13389                 usleep_range(1000, 2000);
13390         }
13391
13392         return 0;
13393 }
13394
13395 /**
13396  * i40e_exit_busy_conf - Exits busy config state
13397  * @vsi: vsi
13398  **/
13399 static void i40e_exit_busy_conf(struct i40e_vsi *vsi)
13400 {
13401         struct i40e_pf *pf = vsi->back;
13402
13403         clear_bit(__I40E_CONFIG_BUSY, pf->state);
13404 }
13405
13406 /**
13407  * i40e_queue_pair_reset_stats - Resets all statistics for a queue pair
13408  * @vsi: vsi
13409  * @queue_pair: queue pair
13410  **/
13411 static void i40e_queue_pair_reset_stats(struct i40e_vsi *vsi, int queue_pair)
13412 {
13413         memset(&vsi->rx_rings[queue_pair]->rx_stats, 0,
13414                sizeof(vsi->rx_rings[queue_pair]->rx_stats));
13415         memset(&vsi->tx_rings[queue_pair]->stats, 0,
13416                sizeof(vsi->tx_rings[queue_pair]->stats));
13417         if (i40e_enabled_xdp_vsi(vsi)) {
13418                 memset(&vsi->xdp_rings[queue_pair]->stats, 0,
13419                        sizeof(vsi->xdp_rings[queue_pair]->stats));
13420         }
13421 }
13422
13423 /**
13424  * i40e_queue_pair_clean_rings - Cleans all the rings of a queue pair
13425  * @vsi: vsi
13426  * @queue_pair: queue pair
13427  **/
13428 static void i40e_queue_pair_clean_rings(struct i40e_vsi *vsi, int queue_pair)
13429 {
13430         i40e_clean_tx_ring(vsi->tx_rings[queue_pair]);
13431         if (i40e_enabled_xdp_vsi(vsi)) {
13432                 /* Make sure that in-progress ndo_xdp_xmit calls are
13433                  * completed.
13434                  */
13435                 synchronize_rcu();
13436                 i40e_clean_tx_ring(vsi->xdp_rings[queue_pair]);
13437         }
13438         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
13439 }
13440
13441 /**
13442  * i40e_queue_pair_toggle_napi - Enables/disables NAPI for a queue pair
13443  * @vsi: vsi
13444  * @queue_pair: queue pair
13445  * @enable: true for enable, false for disable
13446  **/
13447 static void i40e_queue_pair_toggle_napi(struct i40e_vsi *vsi, int queue_pair,
13448                                         bool enable)
13449 {
13450         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
13451         struct i40e_q_vector *q_vector = rxr->q_vector;
13452
13453         if (!vsi->netdev)
13454                 return;
13455
13456         /* All rings in a qp belong to the same qvector. */
13457         if (q_vector->rx.ring || q_vector->tx.ring) {
13458                 if (enable)
13459                         napi_enable(&q_vector->napi);
13460                 else
13461                         napi_disable(&q_vector->napi);
13462         }
13463 }
13464
13465 /**
13466  * i40e_queue_pair_toggle_rings - Enables/disables all rings for a queue pair
13467  * @vsi: vsi
13468  * @queue_pair: queue pair
13469  * @enable: true for enable, false for disable
13470  *
13471  * Returns 0 on success, <0 on failure.
13472  **/
13473 static int i40e_queue_pair_toggle_rings(struct i40e_vsi *vsi, int queue_pair,
13474                                         bool enable)
13475 {
13476         struct i40e_pf *pf = vsi->back;
13477         int pf_q, ret = 0;
13478
13479         pf_q = vsi->base_queue + queue_pair;
13480         ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q,
13481                                      false /*is xdp*/, enable);
13482         if (ret) {
13483                 dev_info(&pf->pdev->dev,
13484                          "VSI seid %d Tx ring %d %sable timeout\n",
13485                          vsi->seid, pf_q, (enable ? "en" : "dis"));
13486                 return ret;
13487         }
13488
13489         i40e_control_rx_q(pf, pf_q, enable);
13490         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
13491         if (ret) {
13492                 dev_info(&pf->pdev->dev,
13493                          "VSI seid %d Rx ring %d %sable timeout\n",
13494                          vsi->seid, pf_q, (enable ? "en" : "dis"));
13495                 return ret;
13496         }
13497
13498         /* Due to HW errata, on Rx disable only, the register can
13499          * indicate done before it really is. Needs 50ms to be sure
13500          */
13501         if (!enable)
13502                 mdelay(50);
13503
13504         if (!i40e_enabled_xdp_vsi(vsi))
13505                 return ret;
13506
13507         ret = i40e_control_wait_tx_q(vsi->seid, pf,
13508                                      pf_q + vsi->alloc_queue_pairs,
13509                                      true /*is xdp*/, enable);
13510         if (ret) {
13511                 dev_info(&pf->pdev->dev,
13512                          "VSI seid %d XDP Tx ring %d %sable timeout\n",
13513                          vsi->seid, pf_q, (enable ? "en" : "dis"));
13514         }
13515
13516         return ret;
13517 }
13518
13519 /**
13520  * i40e_queue_pair_enable_irq - Enables interrupts for a queue pair
13521  * @vsi: vsi
13522  * @queue_pair: queue_pair
13523  **/
13524 static void i40e_queue_pair_enable_irq(struct i40e_vsi *vsi, int queue_pair)
13525 {
13526         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
13527         struct i40e_pf *pf = vsi->back;
13528         struct i40e_hw *hw = &pf->hw;
13529
13530         /* All rings in a qp belong to the same qvector. */
13531         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
13532                 i40e_irq_dynamic_enable(vsi, rxr->q_vector->v_idx);
13533         else
13534                 i40e_irq_dynamic_enable_icr0(pf);
13535
13536         i40e_flush(hw);
13537 }
13538
13539 /**
13540  * i40e_queue_pair_disable_irq - Disables interrupts for a queue pair
13541  * @vsi: vsi
13542  * @queue_pair: queue_pair
13543  **/
13544 static void i40e_queue_pair_disable_irq(struct i40e_vsi *vsi, int queue_pair)
13545 {
13546         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
13547         struct i40e_pf *pf = vsi->back;
13548         struct i40e_hw *hw = &pf->hw;
13549
13550         /* For simplicity, instead of removing the qp interrupt causes
13551          * from the interrupt linked list, we simply disable the interrupt, and
13552          * leave the list intact.
13553          *
13554          * All rings in a qp belong to the same qvector.
13555          */
13556         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
13557                 u32 intpf = vsi->base_vector + rxr->q_vector->v_idx;
13558
13559                 wr32(hw, I40E_PFINT_DYN_CTLN(intpf - 1), 0);
13560                 i40e_flush(hw);
13561                 synchronize_irq(pf->msix_entries[intpf].vector);
13562         } else {
13563                 /* Legacy and MSI mode - this stops all interrupt handling */
13564                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
13565                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
13566                 i40e_flush(hw);
13567                 synchronize_irq(pf->pdev->irq);
13568         }
13569 }
13570
13571 /**
13572  * i40e_queue_pair_disable - Disables a queue pair
13573  * @vsi: vsi
13574  * @queue_pair: queue pair
13575  *
13576  * Returns 0 on success, <0 on failure.
13577  **/
13578 int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
13579 {
13580         int err;
13581
13582         err = i40e_enter_busy_conf(vsi);
13583         if (err)
13584                 return err;
13585
13586         i40e_queue_pair_disable_irq(vsi, queue_pair);
13587         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
13588         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
13589         i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
13590         i40e_queue_pair_clean_rings(vsi, queue_pair);
13591         i40e_queue_pair_reset_stats(vsi, queue_pair);
13592
13593         return err;
13594 }
13595
13596 /**
13597  * i40e_queue_pair_enable - Enables a queue pair
13598  * @vsi: vsi
13599  * @queue_pair: queue pair
13600  *
13601  * Returns 0 on success, <0 on failure.
13602  **/
13603 int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair)
13604 {
13605         int err;
13606
13607         err = i40e_configure_tx_ring(vsi->tx_rings[queue_pair]);
13608         if (err)
13609                 return err;
13610
13611         if (i40e_enabled_xdp_vsi(vsi)) {
13612                 err = i40e_configure_tx_ring(vsi->xdp_rings[queue_pair]);
13613                 if (err)
13614                         return err;
13615         }
13616
13617         err = i40e_configure_rx_ring(vsi->rx_rings[queue_pair]);
13618         if (err)
13619                 return err;
13620
13621         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, true /* on */);
13622         i40e_queue_pair_toggle_napi(vsi, queue_pair, true /* on */);
13623         i40e_queue_pair_enable_irq(vsi, queue_pair);
13624
13625         i40e_exit_busy_conf(vsi);
13626
13627         return err;
13628 }
13629
13630 /**
13631  * i40e_xdp - implements ndo_bpf for i40e
13632  * @dev: netdevice
13633  * @xdp: XDP command
13634  **/
13635 static int i40e_xdp(struct net_device *dev,
13636                     struct netdev_bpf *xdp)
13637 {
13638         struct i40e_netdev_priv *np = netdev_priv(dev);
13639         struct i40e_vsi *vsi = np->vsi;
13640
13641         if (vsi->type != I40E_VSI_MAIN)
13642                 return -EINVAL;
13643
13644         switch (xdp->command) {
13645         case XDP_SETUP_PROG:
13646                 return i40e_xdp_setup(vsi, xdp->prog, xdp->extack);
13647         case XDP_SETUP_XSK_POOL:
13648                 return i40e_xsk_pool_setup(vsi, xdp->xsk.pool,
13649                                            xdp->xsk.queue_id);
13650         default:
13651                 return -EINVAL;
13652         }
13653 }
13654
13655 static const struct net_device_ops i40e_netdev_ops = {
13656         .ndo_open               = i40e_open,
13657         .ndo_stop               = i40e_close,
13658         .ndo_start_xmit         = i40e_lan_xmit_frame,
13659         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
13660         .ndo_set_rx_mode        = i40e_set_rx_mode,
13661         .ndo_validate_addr      = eth_validate_addr,
13662         .ndo_set_mac_address    = i40e_set_mac,
13663         .ndo_change_mtu         = i40e_change_mtu,
13664         .ndo_eth_ioctl          = i40e_ioctl,
13665         .ndo_tx_timeout         = i40e_tx_timeout,
13666         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
13667         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
13668 #ifdef CONFIG_NET_POLL_CONTROLLER
13669         .ndo_poll_controller    = i40e_netpoll,
13670 #endif
13671         .ndo_setup_tc           = __i40e_setup_tc,
13672         .ndo_select_queue       = i40e_lan_select_queue,
13673         .ndo_set_features       = i40e_set_features,
13674         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
13675         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
13676         .ndo_get_vf_stats       = i40e_get_vf_stats,
13677         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
13678         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
13679         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
13680         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
13681         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
13682         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
13683         .ndo_fdb_add            = i40e_ndo_fdb_add,
13684         .ndo_features_check     = i40e_features_check,
13685         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
13686         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
13687         .ndo_bpf                = i40e_xdp,
13688         .ndo_xdp_xmit           = i40e_xdp_xmit,
13689         .ndo_xsk_wakeup         = i40e_xsk_wakeup,
13690         .ndo_dfwd_add_station   = i40e_fwd_add,
13691         .ndo_dfwd_del_station   = i40e_fwd_del,
13692 };
13693
13694 /**
13695  * i40e_config_netdev - Setup the netdev flags
13696  * @vsi: the VSI being configured
13697  *
13698  * Returns 0 on success, negative value on failure
13699  **/
13700 static int i40e_config_netdev(struct i40e_vsi *vsi)
13701 {
13702         struct i40e_pf *pf = vsi->back;
13703         struct i40e_hw *hw = &pf->hw;
13704         struct i40e_netdev_priv *np;
13705         struct net_device *netdev;
13706         u8 broadcast[ETH_ALEN];
13707         u8 mac_addr[ETH_ALEN];
13708         int etherdev_size;
13709         netdev_features_t hw_enc_features;
13710         netdev_features_t hw_features;
13711
13712         etherdev_size = sizeof(struct i40e_netdev_priv);
13713         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
13714         if (!netdev)
13715                 return -ENOMEM;
13716
13717         vsi->netdev = netdev;
13718         np = netdev_priv(netdev);
13719         np->vsi = vsi;
13720
13721         hw_enc_features = NETIF_F_SG                    |
13722                           NETIF_F_HW_CSUM               |
13723                           NETIF_F_HIGHDMA               |
13724                           NETIF_F_SOFT_FEATURES         |
13725                           NETIF_F_TSO                   |
13726                           NETIF_F_TSO_ECN               |
13727                           NETIF_F_TSO6                  |
13728                           NETIF_F_GSO_GRE               |
13729                           NETIF_F_GSO_GRE_CSUM          |
13730                           NETIF_F_GSO_PARTIAL           |
13731                           NETIF_F_GSO_IPXIP4            |
13732                           NETIF_F_GSO_IPXIP6            |
13733                           NETIF_F_GSO_UDP_TUNNEL        |
13734                           NETIF_F_GSO_UDP_TUNNEL_CSUM   |
13735                           NETIF_F_GSO_UDP_L4            |
13736                           NETIF_F_SCTP_CRC              |
13737                           NETIF_F_RXHASH                |
13738                           NETIF_F_RXCSUM                |
13739                           0;
13740
13741         if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
13742                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
13743
13744         netdev->udp_tunnel_nic_info = &pf->udp_tunnel_nic;
13745
13746         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
13747
13748         netdev->hw_enc_features |= hw_enc_features;
13749
13750         /* record features VLANs can make use of */
13751         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
13752
13753 #define I40E_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE |            \
13754                                    NETIF_F_GSO_GRE_CSUM |       \
13755                                    NETIF_F_GSO_IPXIP4 |         \
13756                                    NETIF_F_GSO_IPXIP6 |         \
13757                                    NETIF_F_GSO_UDP_TUNNEL |     \
13758                                    NETIF_F_GSO_UDP_TUNNEL_CSUM)
13759
13760         netdev->gso_partial_features = I40E_GSO_PARTIAL_FEATURES;
13761         netdev->features |= NETIF_F_GSO_PARTIAL |
13762                             I40E_GSO_PARTIAL_FEATURES;
13763
13764         netdev->mpls_features |= NETIF_F_SG;
13765         netdev->mpls_features |= NETIF_F_HW_CSUM;
13766         netdev->mpls_features |= NETIF_F_TSO;
13767         netdev->mpls_features |= NETIF_F_TSO6;
13768         netdev->mpls_features |= I40E_GSO_PARTIAL_FEATURES;
13769
13770         /* enable macvlan offloads */
13771         netdev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
13772
13773         hw_features = hw_enc_features           |
13774                       NETIF_F_HW_VLAN_CTAG_TX   |
13775                       NETIF_F_HW_VLAN_CTAG_RX;
13776
13777         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
13778                 hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
13779
13780         netdev->hw_features |= hw_features | NETIF_F_LOOPBACK;
13781
13782         netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
13783         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
13784
13785         netdev->features &= ~NETIF_F_HW_TC;
13786
13787         if (vsi->type == I40E_VSI_MAIN) {
13788                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
13789                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
13790                 /* The following steps are necessary for two reasons. First,
13791                  * some older NVM configurations load a default MAC-VLAN
13792                  * filter that will accept any tagged packet, and we want to
13793                  * replace this with a normal filter. Additionally, it is
13794                  * possible our MAC address was provided by the platform using
13795                  * Open Firmware or similar.
13796                  *
13797                  * Thus, we need to remove the default filter and install one
13798                  * specific to the MAC address.
13799                  */
13800                 i40e_rm_default_mac_filter(vsi, mac_addr);
13801                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13802                 i40e_add_mac_filter(vsi, mac_addr);
13803                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13804         } else {
13805                 /* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
13806                  * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
13807                  * the end, which is 4 bytes long, so force truncation of the
13808                  * original name by IFNAMSIZ - 4
13809                  */
13810                 snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
13811                          IFNAMSIZ - 4,
13812                          pf->vsi[pf->lan_vsi]->netdev->name);
13813                 eth_random_addr(mac_addr);
13814
13815                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13816                 i40e_add_mac_filter(vsi, mac_addr);
13817                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13818         }
13819
13820         /* Add the broadcast filter so that we initially will receive
13821          * broadcast packets. Note that when a new VLAN is first added the
13822          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
13823          * specific filters as part of transitioning into "vlan" operation.
13824          * When more VLANs are added, the driver will copy each existing MAC
13825          * filter and add it for the new VLAN.
13826          *
13827          * Broadcast filters are handled specially by
13828          * i40e_sync_filters_subtask, as the driver must to set the broadcast
13829          * promiscuous bit instead of adding this directly as a MAC/VLAN
13830          * filter. The subtask will update the correct broadcast promiscuous
13831          * bits as VLANs become active or inactive.
13832          */
13833         eth_broadcast_addr(broadcast);
13834         spin_lock_bh(&vsi->mac_filter_hash_lock);
13835         i40e_add_mac_filter(vsi, broadcast);
13836         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13837
13838         eth_hw_addr_set(netdev, mac_addr);
13839         ether_addr_copy(netdev->perm_addr, mac_addr);
13840
13841         /* i40iw_net_event() reads 16 bytes from neigh->primary_key */
13842         netdev->neigh_priv_len = sizeof(u32) * 4;
13843
13844         netdev->priv_flags |= IFF_UNICAST_FLT;
13845         netdev->priv_flags |= IFF_SUPP_NOFCS;
13846         /* Setup netdev TC information */
13847         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
13848
13849         netdev->netdev_ops = &i40e_netdev_ops;
13850         netdev->watchdog_timeo = 5 * HZ;
13851         i40e_set_ethtool_ops(netdev);
13852
13853         /* MTU range: 68 - 9706 */
13854         netdev->min_mtu = ETH_MIN_MTU;
13855         netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;
13856
13857         return 0;
13858 }
13859
13860 /**
13861  * i40e_vsi_delete - Delete a VSI from the switch
13862  * @vsi: the VSI being removed
13863  *
13864  * Returns 0 on success, negative value on failure
13865  **/
13866 static void i40e_vsi_delete(struct i40e_vsi *vsi)
13867 {
13868         /* remove default VSI is not allowed */
13869         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
13870                 return;
13871
13872         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
13873 }
13874
13875 /**
13876  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
13877  * @vsi: the VSI being queried
13878  *
13879  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
13880  **/
13881 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
13882 {
13883         struct i40e_veb *veb;
13884         struct i40e_pf *pf = vsi->back;
13885
13886         /* Uplink is not a bridge so default to VEB */
13887         if (vsi->veb_idx >= I40E_MAX_VEB)
13888                 return 1;
13889
13890         veb = pf->veb[vsi->veb_idx];
13891         if (!veb) {
13892                 dev_info(&pf->pdev->dev,
13893                          "There is no veb associated with the bridge\n");
13894                 return -ENOENT;
13895         }
13896
13897         /* Uplink is a bridge in VEPA mode */
13898         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
13899                 return 0;
13900         } else {
13901                 /* Uplink is a bridge in VEB mode */
13902                 return 1;
13903         }
13904
13905         /* VEPA is now default bridge, so return 0 */
13906         return 0;
13907 }
13908
13909 /**
13910  * i40e_add_vsi - Add a VSI to the switch
13911  * @vsi: the VSI being configured
13912  *
13913  * This initializes a VSI context depending on the VSI type to be added and
13914  * passes it down to the add_vsi aq command.
13915  **/
13916 static int i40e_add_vsi(struct i40e_vsi *vsi)
13917 {
13918         int ret = -ENODEV;
13919         struct i40e_pf *pf = vsi->back;
13920         struct i40e_hw *hw = &pf->hw;
13921         struct i40e_vsi_context ctxt;
13922         struct i40e_mac_filter *f;
13923         struct hlist_node *h;
13924         int bkt;
13925
13926         u8 enabled_tc = 0x1; /* TC0 enabled */
13927         int f_count = 0;
13928
13929         memset(&ctxt, 0, sizeof(ctxt));
13930         switch (vsi->type) {
13931         case I40E_VSI_MAIN:
13932                 /* The PF's main VSI is already setup as part of the
13933                  * device initialization, so we'll not bother with
13934                  * the add_vsi call, but we will retrieve the current
13935                  * VSI context.
13936                  */
13937                 ctxt.seid = pf->main_vsi_seid;
13938                 ctxt.pf_num = pf->hw.pf_id;
13939                 ctxt.vf_num = 0;
13940                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
13941                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13942                 if (ret) {
13943                         dev_info(&pf->pdev->dev,
13944                                  "couldn't get PF vsi config, err %s aq_err %s\n",
13945                                  i40e_stat_str(&pf->hw, ret),
13946                                  i40e_aq_str(&pf->hw,
13947                                              pf->hw.aq.asq_last_status));
13948                         return -ENOENT;
13949                 }
13950                 vsi->info = ctxt.info;
13951                 vsi->info.valid_sections = 0;
13952
13953                 vsi->seid = ctxt.seid;
13954                 vsi->id = ctxt.vsi_number;
13955
13956                 enabled_tc = i40e_pf_get_tc_map(pf);
13957
13958                 /* Source pruning is enabled by default, so the flag is
13959                  * negative logic - if it's set, we need to fiddle with
13960                  * the VSI to disable source pruning.
13961                  */
13962                 if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
13963                         memset(&ctxt, 0, sizeof(ctxt));
13964                         ctxt.seid = pf->main_vsi_seid;
13965                         ctxt.pf_num = pf->hw.pf_id;
13966                         ctxt.vf_num = 0;
13967                         ctxt.info.valid_sections |=
13968                                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13969                         ctxt.info.switch_id =
13970                                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
13971                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13972                         if (ret) {
13973                                 dev_info(&pf->pdev->dev,
13974                                          "update vsi failed, err %s aq_err %s\n",
13975                                          i40e_stat_str(&pf->hw, ret),
13976                                          i40e_aq_str(&pf->hw,
13977                                                      pf->hw.aq.asq_last_status));
13978                                 ret = -ENOENT;
13979                                 goto err;
13980                         }
13981                 }
13982
13983                 /* MFP mode setup queue map and update VSI */
13984                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
13985                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
13986                         memset(&ctxt, 0, sizeof(ctxt));
13987                         ctxt.seid = pf->main_vsi_seid;
13988                         ctxt.pf_num = pf->hw.pf_id;
13989                         ctxt.vf_num = 0;
13990                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
13991                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13992                         if (ret) {
13993                                 dev_info(&pf->pdev->dev,
13994                                          "update vsi failed, err %s aq_err %s\n",
13995                                          i40e_stat_str(&pf->hw, ret),
13996                                          i40e_aq_str(&pf->hw,
13997                                                     pf->hw.aq.asq_last_status));
13998                                 ret = -ENOENT;
13999                                 goto err;
14000                         }
14001                         /* update the local VSI info queue map */
14002                         i40e_vsi_update_queue_map(vsi, &ctxt);
14003                         vsi->info.valid_sections = 0;
14004                 } else {
14005                         /* Default/Main VSI is only enabled for TC0
14006                          * reconfigure it to enable all TCs that are
14007                          * available on the port in SFP mode.
14008                          * For MFP case the iSCSI PF would use this
14009                          * flow to enable LAN+iSCSI TC.
14010                          */
14011                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
14012                         if (ret) {
14013                                 /* Single TC condition is not fatal,
14014                                  * message and continue
14015                                  */
14016                                 dev_info(&pf->pdev->dev,
14017                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
14018                                          enabled_tc,
14019                                          i40e_stat_str(&pf->hw, ret),
14020                                          i40e_aq_str(&pf->hw,
14021                                                     pf->hw.aq.asq_last_status));
14022                         }
14023                 }
14024                 break;
14025
14026         case I40E_VSI_FDIR:
14027                 ctxt.pf_num = hw->pf_id;
14028                 ctxt.vf_num = 0;
14029                 ctxt.uplink_seid = vsi->uplink_seid;
14030                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
14031                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
14032                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
14033                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
14034                         ctxt.info.valid_sections |=
14035                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
14036                         ctxt.info.switch_id =
14037                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
14038                 }
14039                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
14040                 break;
14041
14042         case I40E_VSI_VMDQ2:
14043                 ctxt.pf_num = hw->pf_id;
14044                 ctxt.vf_num = 0;
14045                 ctxt.uplink_seid = vsi->uplink_seid;
14046                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
14047                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
14048
14049                 /* This VSI is connected to VEB so the switch_id
14050                  * should be set to zero by default.
14051                  */
14052                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
14053                         ctxt.info.valid_sections |=
14054                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
14055                         ctxt.info.switch_id =
14056                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
14057                 }
14058
14059                 /* Setup the VSI tx/rx queue map for TC0 only for now */
14060                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
14061                 break;
14062
14063         case I40E_VSI_SRIOV:
14064                 ctxt.pf_num = hw->pf_id;
14065                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
14066                 ctxt.uplink_seid = vsi->uplink_seid;
14067                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
14068                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
14069
14070                 /* This VSI is connected to VEB so the switch_id
14071                  * should be set to zero by default.
14072                  */
14073                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
14074                         ctxt.info.valid_sections |=
14075                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
14076                         ctxt.info.switch_id =
14077                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
14078                 }
14079
14080                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
14081                         ctxt.info.valid_sections |=
14082                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
14083                         ctxt.info.queueing_opt_flags |=
14084                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
14085                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
14086                 }
14087
14088                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
14089                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
14090                 if (pf->vf[vsi->vf_id].spoofchk) {
14091                         ctxt.info.valid_sections |=
14092                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
14093                         ctxt.info.sec_flags |=
14094                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
14095                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
14096                 }
14097                 /* Setup the VSI tx/rx queue map for TC0 only for now */
14098                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
14099                 break;
14100
14101         case I40E_VSI_IWARP:
14102                 /* send down message to iWARP */
14103                 break;
14104
14105         default:
14106                 return -ENODEV;
14107         }
14108
14109         if (vsi->type != I40E_VSI_MAIN) {
14110                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
14111                 if (ret) {
14112                         dev_info(&vsi->back->pdev->dev,
14113                                  "add vsi failed, err %s aq_err %s\n",
14114                                  i40e_stat_str(&pf->hw, ret),
14115                                  i40e_aq_str(&pf->hw,
14116                                              pf->hw.aq.asq_last_status));
14117                         ret = -ENOENT;
14118                         goto err;
14119                 }
14120                 vsi->info = ctxt.info;
14121                 vsi->info.valid_sections = 0;
14122                 vsi->seid = ctxt.seid;
14123                 vsi->id = ctxt.vsi_number;
14124         }
14125
14126         vsi->active_filters = 0;
14127         clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
14128         spin_lock_bh(&vsi->mac_filter_hash_lock);
14129         /* If macvlan filters already exist, force them to get loaded */
14130         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
14131                 f->state = I40E_FILTER_NEW;
14132                 f_count++;
14133         }
14134         spin_unlock_bh(&vsi->mac_filter_hash_lock);
14135
14136         if (f_count) {
14137                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
14138                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
14139         }
14140
14141         /* Update VSI BW information */
14142         ret = i40e_vsi_get_bw_info(vsi);
14143         if (ret) {
14144                 dev_info(&pf->pdev->dev,
14145                          "couldn't get vsi bw info, err %s aq_err %s\n",
14146                          i40e_stat_str(&pf->hw, ret),
14147                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14148                 /* VSI is already added so not tearing that up */
14149                 ret = 0;
14150         }
14151
14152 err:
14153         return ret;
14154 }
14155
14156 /**
14157  * i40e_vsi_release - Delete a VSI and free its resources
14158  * @vsi: the VSI being removed
14159  *
14160  * Returns 0 on success or < 0 on error
14161  **/
14162 int i40e_vsi_release(struct i40e_vsi *vsi)
14163 {
14164         struct i40e_mac_filter *f;
14165         struct hlist_node *h;
14166         struct i40e_veb *veb = NULL;
14167         struct i40e_pf *pf;
14168         u16 uplink_seid;
14169         int i, n, bkt;
14170
14171         pf = vsi->back;
14172
14173         /* release of a VEB-owner or last VSI is not allowed */
14174         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
14175                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
14176                          vsi->seid, vsi->uplink_seid);
14177                 return -ENODEV;
14178         }
14179         if (vsi == pf->vsi[pf->lan_vsi] &&
14180             !test_bit(__I40E_DOWN, pf->state)) {
14181                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
14182                 return -ENODEV;
14183         }
14184         set_bit(__I40E_VSI_RELEASING, vsi->state);
14185         uplink_seid = vsi->uplink_seid;
14186         if (vsi->type != I40E_VSI_SRIOV) {
14187                 if (vsi->netdev_registered) {
14188                         vsi->netdev_registered = false;
14189                         if (vsi->netdev) {
14190                                 /* results in a call to i40e_close() */
14191                                 unregister_netdev(vsi->netdev);
14192                         }
14193                 } else {
14194                         i40e_vsi_close(vsi);
14195                 }
14196                 i40e_vsi_disable_irq(vsi);
14197         }
14198
14199         spin_lock_bh(&vsi->mac_filter_hash_lock);
14200
14201         /* clear the sync flag on all filters */
14202         if (vsi->netdev) {
14203                 __dev_uc_unsync(vsi->netdev, NULL);
14204                 __dev_mc_unsync(vsi->netdev, NULL);
14205         }
14206
14207         /* make sure any remaining filters are marked for deletion */
14208         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
14209                 __i40e_del_filter(vsi, f);
14210
14211         spin_unlock_bh(&vsi->mac_filter_hash_lock);
14212
14213         i40e_sync_vsi_filters(vsi);
14214
14215         i40e_vsi_delete(vsi);
14216         i40e_vsi_free_q_vectors(vsi);
14217         if (vsi->netdev) {
14218                 free_netdev(vsi->netdev);
14219                 vsi->netdev = NULL;
14220         }
14221         i40e_vsi_clear_rings(vsi);
14222         i40e_vsi_clear(vsi);
14223
14224         /* If this was the last thing on the VEB, except for the
14225          * controlling VSI, remove the VEB, which puts the controlling
14226          * VSI onto the next level down in the switch.
14227          *
14228          * Well, okay, there's one more exception here: don't remove
14229          * the orphan VEBs yet.  We'll wait for an explicit remove request
14230          * from up the network stack.
14231          */
14232         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
14233                 if (pf->vsi[i] &&
14234                     pf->vsi[i]->uplink_seid == uplink_seid &&
14235                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
14236                         n++;      /* count the VSIs */
14237                 }
14238         }
14239         for (i = 0; i < I40E_MAX_VEB; i++) {
14240                 if (!pf->veb[i])
14241                         continue;
14242                 if (pf->veb[i]->uplink_seid == uplink_seid)
14243                         n++;     /* count the VEBs */
14244                 if (pf->veb[i]->seid == uplink_seid)
14245                         veb = pf->veb[i];
14246         }
14247         if (n == 0 && veb && veb->uplink_seid != 0)
14248                 i40e_veb_release(veb);
14249
14250         return 0;
14251 }
14252
14253 /**
14254  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
14255  * @vsi: ptr to the VSI
14256  *
14257  * This should only be called after i40e_vsi_mem_alloc() which allocates the
14258  * corresponding SW VSI structure and initializes num_queue_pairs for the
14259  * newly allocated VSI.
14260  *
14261  * Returns 0 on success or negative on failure
14262  **/
14263 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
14264 {
14265         int ret = -ENOENT;
14266         struct i40e_pf *pf = vsi->back;
14267
14268         if (vsi->q_vectors[0]) {
14269                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
14270                          vsi->seid);
14271                 return -EEXIST;
14272         }
14273
14274         if (vsi->base_vector) {
14275                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
14276                          vsi->seid, vsi->base_vector);
14277                 return -EEXIST;
14278         }
14279
14280         ret = i40e_vsi_alloc_q_vectors(vsi);
14281         if (ret) {
14282                 dev_info(&pf->pdev->dev,
14283                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
14284                          vsi->num_q_vectors, vsi->seid, ret);
14285                 vsi->num_q_vectors = 0;
14286                 goto vector_setup_out;
14287         }
14288
14289         /* In Legacy mode, we do not have to get any other vector since we
14290          * piggyback on the misc/ICR0 for queue interrupts.
14291         */
14292         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
14293                 return ret;
14294         if (vsi->num_q_vectors)
14295                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
14296                                                  vsi->num_q_vectors, vsi->idx);
14297         if (vsi->base_vector < 0) {
14298                 dev_info(&pf->pdev->dev,
14299                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
14300                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
14301                 i40e_vsi_free_q_vectors(vsi);
14302                 ret = -ENOENT;
14303                 goto vector_setup_out;
14304         }
14305
14306 vector_setup_out:
14307         return ret;
14308 }
14309
14310 /**
14311  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
14312  * @vsi: pointer to the vsi.
14313  *
14314  * This re-allocates a vsi's queue resources.
14315  *
14316  * Returns pointer to the successfully allocated and configured VSI sw struct
14317  * on success, otherwise returns NULL on failure.
14318  **/
14319 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
14320 {
14321         u16 alloc_queue_pairs;
14322         struct i40e_pf *pf;
14323         u8 enabled_tc;
14324         int ret;
14325
14326         if (!vsi)
14327                 return NULL;
14328
14329         pf = vsi->back;
14330
14331         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
14332         i40e_vsi_clear_rings(vsi);
14333
14334         i40e_vsi_free_arrays(vsi, false);
14335         i40e_set_num_rings_in_vsi(vsi);
14336         ret = i40e_vsi_alloc_arrays(vsi, false);
14337         if (ret)
14338                 goto err_vsi;
14339
14340         alloc_queue_pairs = vsi->alloc_queue_pairs *
14341                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
14342
14343         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
14344         if (ret < 0) {
14345                 dev_info(&pf->pdev->dev,
14346                          "failed to get tracking for %d queues for VSI %d err %d\n",
14347                          alloc_queue_pairs, vsi->seid, ret);
14348                 goto err_vsi;
14349         }
14350         vsi->base_queue = ret;
14351
14352         /* Update the FW view of the VSI. Force a reset of TC and queue
14353          * layout configurations.
14354          */
14355         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
14356         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
14357         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
14358         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
14359         if (vsi->type == I40E_VSI_MAIN)
14360                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
14361
14362         /* assign it some queues */
14363         ret = i40e_alloc_rings(vsi);
14364         if (ret)
14365                 goto err_rings;
14366
14367         /* map all of the rings to the q_vectors */
14368         i40e_vsi_map_rings_to_vectors(vsi);
14369         return vsi;
14370
14371 err_rings:
14372         i40e_vsi_free_q_vectors(vsi);
14373         if (vsi->netdev_registered) {
14374                 vsi->netdev_registered = false;
14375                 unregister_netdev(vsi->netdev);
14376                 free_netdev(vsi->netdev);
14377                 vsi->netdev = NULL;
14378         }
14379         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
14380 err_vsi:
14381         i40e_vsi_clear(vsi);
14382         return NULL;
14383 }
14384
14385 /**
14386  * i40e_vsi_setup - Set up a VSI by a given type
14387  * @pf: board private structure
14388  * @type: VSI type
14389  * @uplink_seid: the switch element to link to
14390  * @param1: usage depends upon VSI type. For VF types, indicates VF id
14391  *
14392  * This allocates the sw VSI structure and its queue resources, then add a VSI
14393  * to the identified VEB.
14394  *
14395  * Returns pointer to the successfully allocated and configure VSI sw struct on
14396  * success, otherwise returns NULL on failure.
14397  **/
14398 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
14399                                 u16 uplink_seid, u32 param1)
14400 {
14401         struct i40e_vsi *vsi = NULL;
14402         struct i40e_veb *veb = NULL;
14403         u16 alloc_queue_pairs;
14404         int ret, i;
14405         int v_idx;
14406
14407         /* The requested uplink_seid must be either
14408          *     - the PF's port seid
14409          *              no VEB is needed because this is the PF
14410          *              or this is a Flow Director special case VSI
14411          *     - seid of an existing VEB
14412          *     - seid of a VSI that owns an existing VEB
14413          *     - seid of a VSI that doesn't own a VEB
14414          *              a new VEB is created and the VSI becomes the owner
14415          *     - seid of the PF VSI, which is what creates the first VEB
14416          *              this is a special case of the previous
14417          *
14418          * Find which uplink_seid we were given and create a new VEB if needed
14419          */
14420         for (i = 0; i < I40E_MAX_VEB; i++) {
14421                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
14422                         veb = pf->veb[i];
14423                         break;
14424                 }
14425         }
14426
14427         if (!veb && uplink_seid != pf->mac_seid) {
14428
14429                 for (i = 0; i < pf->num_alloc_vsi; i++) {
14430                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
14431                                 vsi = pf->vsi[i];
14432                                 break;
14433                         }
14434                 }
14435                 if (!vsi) {
14436                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
14437                                  uplink_seid);
14438                         return NULL;
14439                 }
14440
14441                 if (vsi->uplink_seid == pf->mac_seid)
14442                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
14443                                              vsi->tc_config.enabled_tc);
14444                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
14445                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
14446                                              vsi->tc_config.enabled_tc);
14447                 if (veb) {
14448                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
14449                                 dev_info(&vsi->back->pdev->dev,
14450                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
14451                                 return NULL;
14452                         }
14453                         /* We come up by default in VEPA mode if SRIOV is not
14454                          * already enabled, in which case we can't force VEPA
14455                          * mode.
14456                          */
14457                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
14458                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
14459                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
14460                         }
14461                         i40e_config_bridge_mode(veb);
14462                 }
14463                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
14464                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
14465                                 veb = pf->veb[i];
14466                 }
14467                 if (!veb) {
14468                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
14469                         return NULL;
14470                 }
14471
14472                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14473                 uplink_seid = veb->seid;
14474         }
14475
14476         /* get vsi sw struct */
14477         v_idx = i40e_vsi_mem_alloc(pf, type);
14478         if (v_idx < 0)
14479                 goto err_alloc;
14480         vsi = pf->vsi[v_idx];
14481         if (!vsi)
14482                 goto err_alloc;
14483         vsi->type = type;
14484         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
14485
14486         if (type == I40E_VSI_MAIN)
14487                 pf->lan_vsi = v_idx;
14488         else if (type == I40E_VSI_SRIOV)
14489                 vsi->vf_id = param1;
14490         /* assign it some queues */
14491         alloc_queue_pairs = vsi->alloc_queue_pairs *
14492                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
14493
14494         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
14495         if (ret < 0) {
14496                 dev_info(&pf->pdev->dev,
14497                          "failed to get tracking for %d queues for VSI %d err=%d\n",
14498                          alloc_queue_pairs, vsi->seid, ret);
14499                 goto err_vsi;
14500         }
14501         vsi->base_queue = ret;
14502
14503         /* get a VSI from the hardware */
14504         vsi->uplink_seid = uplink_seid;
14505         ret = i40e_add_vsi(vsi);
14506         if (ret)
14507                 goto err_vsi;
14508
14509         switch (vsi->type) {
14510         /* setup the netdev if needed */
14511         case I40E_VSI_MAIN:
14512         case I40E_VSI_VMDQ2:
14513                 ret = i40e_config_netdev(vsi);
14514                 if (ret)
14515                         goto err_netdev;
14516                 ret = i40e_netif_set_realnum_tx_rx_queues(vsi);
14517                 if (ret)
14518                         goto err_netdev;
14519                 ret = register_netdev(vsi->netdev);
14520                 if (ret)
14521                         goto err_netdev;
14522                 vsi->netdev_registered = true;
14523                 netif_carrier_off(vsi->netdev);
14524 #ifdef CONFIG_I40E_DCB
14525                 /* Setup DCB netlink interface */
14526                 i40e_dcbnl_setup(vsi);
14527 #endif /* CONFIG_I40E_DCB */
14528                 fallthrough;
14529         case I40E_VSI_FDIR:
14530                 /* set up vectors and rings if needed */
14531                 ret = i40e_vsi_setup_vectors(vsi);
14532                 if (ret)
14533                         goto err_msix;
14534
14535                 ret = i40e_alloc_rings(vsi);
14536                 if (ret)
14537                         goto err_rings;
14538
14539                 /* map all of the rings to the q_vectors */
14540                 i40e_vsi_map_rings_to_vectors(vsi);
14541
14542                 i40e_vsi_reset_stats(vsi);
14543                 break;
14544         default:
14545                 /* no netdev or rings for the other VSI types */
14546                 break;
14547         }
14548
14549         if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
14550             (vsi->type == I40E_VSI_VMDQ2)) {
14551                 ret = i40e_vsi_config_rss(vsi);
14552         }
14553         return vsi;
14554
14555 err_rings:
14556         i40e_vsi_free_q_vectors(vsi);
14557 err_msix:
14558         if (vsi->netdev_registered) {
14559                 vsi->netdev_registered = false;
14560                 unregister_netdev(vsi->netdev);
14561                 free_netdev(vsi->netdev);
14562                 vsi->netdev = NULL;
14563         }
14564 err_netdev:
14565         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
14566 err_vsi:
14567         i40e_vsi_clear(vsi);
14568 err_alloc:
14569         return NULL;
14570 }
14571
14572 /**
14573  * i40e_veb_get_bw_info - Query VEB BW information
14574  * @veb: the veb to query
14575  *
14576  * Query the Tx scheduler BW configuration data for given VEB
14577  **/
14578 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
14579 {
14580         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
14581         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
14582         struct i40e_pf *pf = veb->pf;
14583         struct i40e_hw *hw = &pf->hw;
14584         u32 tc_bw_max;
14585         int ret = 0;
14586         int i;
14587
14588         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
14589                                                   &bw_data, NULL);
14590         if (ret) {
14591                 dev_info(&pf->pdev->dev,
14592                          "query veb bw config failed, err %s aq_err %s\n",
14593                          i40e_stat_str(&pf->hw, ret),
14594                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
14595                 goto out;
14596         }
14597
14598         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
14599                                                    &ets_data, NULL);
14600         if (ret) {
14601                 dev_info(&pf->pdev->dev,
14602                          "query veb bw ets config failed, err %s aq_err %s\n",
14603                          i40e_stat_str(&pf->hw, ret),
14604                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
14605                 goto out;
14606         }
14607
14608         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
14609         veb->bw_max_quanta = ets_data.tc_bw_max;
14610         veb->is_abs_credits = bw_data.absolute_credits_enable;
14611         veb->enabled_tc = ets_data.tc_valid_bits;
14612         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
14613                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
14614         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
14615                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
14616                 veb->bw_tc_limit_credits[i] =
14617                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
14618                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
14619         }
14620
14621 out:
14622         return ret;
14623 }
14624
14625 /**
14626  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
14627  * @pf: board private structure
14628  *
14629  * On error: returns error code (negative)
14630  * On success: returns vsi index in PF (positive)
14631  **/
14632 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
14633 {
14634         int ret = -ENOENT;
14635         struct i40e_veb *veb;
14636         int i;
14637
14638         /* Need to protect the allocation of switch elements at the PF level */
14639         mutex_lock(&pf->switch_mutex);
14640
14641         /* VEB list may be fragmented if VEB creation/destruction has
14642          * been happening.  We can afford to do a quick scan to look
14643          * for any free slots in the list.
14644          *
14645          * find next empty veb slot, looping back around if necessary
14646          */
14647         i = 0;
14648         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
14649                 i++;
14650         if (i >= I40E_MAX_VEB) {
14651                 ret = -ENOMEM;
14652                 goto err_alloc_veb;  /* out of VEB slots! */
14653         }
14654
14655         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
14656         if (!veb) {
14657                 ret = -ENOMEM;
14658                 goto err_alloc_veb;
14659         }
14660         veb->pf = pf;
14661         veb->idx = i;
14662         veb->enabled_tc = 1;
14663
14664         pf->veb[i] = veb;
14665         ret = i;
14666 err_alloc_veb:
14667         mutex_unlock(&pf->switch_mutex);
14668         return ret;
14669 }
14670
14671 /**
14672  * i40e_switch_branch_release - Delete a branch of the switch tree
14673  * @branch: where to start deleting
14674  *
14675  * This uses recursion to find the tips of the branch to be
14676  * removed, deleting until we get back to and can delete this VEB.
14677  **/
14678 static void i40e_switch_branch_release(struct i40e_veb *branch)
14679 {
14680         struct i40e_pf *pf = branch->pf;
14681         u16 branch_seid = branch->seid;
14682         u16 veb_idx = branch->idx;
14683         int i;
14684
14685         /* release any VEBs on this VEB - RECURSION */
14686         for (i = 0; i < I40E_MAX_VEB; i++) {
14687                 if (!pf->veb[i])
14688                         continue;
14689                 if (pf->veb[i]->uplink_seid == branch->seid)
14690                         i40e_switch_branch_release(pf->veb[i]);
14691         }
14692
14693         /* Release the VSIs on this VEB, but not the owner VSI.
14694          *
14695          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
14696          *       the VEB itself, so don't use (*branch) after this loop.
14697          */
14698         for (i = 0; i < pf->num_alloc_vsi; i++) {
14699                 if (!pf->vsi[i])
14700                         continue;
14701                 if (pf->vsi[i]->uplink_seid == branch_seid &&
14702                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
14703                         i40e_vsi_release(pf->vsi[i]);
14704                 }
14705         }
14706
14707         /* There's one corner case where the VEB might not have been
14708          * removed, so double check it here and remove it if needed.
14709          * This case happens if the veb was created from the debugfs
14710          * commands and no VSIs were added to it.
14711          */
14712         if (pf->veb[veb_idx])
14713                 i40e_veb_release(pf->veb[veb_idx]);
14714 }
14715
14716 /**
14717  * i40e_veb_clear - remove veb struct
14718  * @veb: the veb to remove
14719  **/
14720 static void i40e_veb_clear(struct i40e_veb *veb)
14721 {
14722         if (!veb)
14723                 return;
14724
14725         if (veb->pf) {
14726                 struct i40e_pf *pf = veb->pf;
14727
14728                 mutex_lock(&pf->switch_mutex);
14729                 if (pf->veb[veb->idx] == veb)
14730                         pf->veb[veb->idx] = NULL;
14731                 mutex_unlock(&pf->switch_mutex);
14732         }
14733
14734         kfree(veb);
14735 }
14736
14737 /**
14738  * i40e_veb_release - Delete a VEB and free its resources
14739  * @veb: the VEB being removed
14740  **/
14741 void i40e_veb_release(struct i40e_veb *veb)
14742 {
14743         struct i40e_vsi *vsi = NULL;
14744         struct i40e_pf *pf;
14745         int i, n = 0;
14746
14747         pf = veb->pf;
14748
14749         /* find the remaining VSI and check for extras */
14750         for (i = 0; i < pf->num_alloc_vsi; i++) {
14751                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
14752                         n++;
14753                         vsi = pf->vsi[i];
14754                 }
14755         }
14756         if (n != 1) {
14757                 dev_info(&pf->pdev->dev,
14758                          "can't remove VEB %d with %d VSIs left\n",
14759                          veb->seid, n);
14760                 return;
14761         }
14762
14763         /* move the remaining VSI to uplink veb */
14764         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
14765         if (veb->uplink_seid) {
14766                 vsi->uplink_seid = veb->uplink_seid;
14767                 if (veb->uplink_seid == pf->mac_seid)
14768                         vsi->veb_idx = I40E_NO_VEB;
14769                 else
14770                         vsi->veb_idx = veb->veb_idx;
14771         } else {
14772                 /* floating VEB */
14773                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
14774                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
14775         }
14776
14777         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14778         i40e_veb_clear(veb);
14779 }
14780
14781 /**
14782  * i40e_add_veb - create the VEB in the switch
14783  * @veb: the VEB to be instantiated
14784  * @vsi: the controlling VSI
14785  **/
14786 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
14787 {
14788         struct i40e_pf *pf = veb->pf;
14789         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
14790         int ret;
14791
14792         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
14793                               veb->enabled_tc, false,
14794                               &veb->seid, enable_stats, NULL);
14795
14796         /* get a VEB from the hardware */
14797         if (ret) {
14798                 dev_info(&pf->pdev->dev,
14799                          "couldn't add VEB, err %s aq_err %s\n",
14800                          i40e_stat_str(&pf->hw, ret),
14801                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14802                 return -EPERM;
14803         }
14804
14805         /* get statistics counter */
14806         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
14807                                          &veb->stats_idx, NULL, NULL, NULL);
14808         if (ret) {
14809                 dev_info(&pf->pdev->dev,
14810                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
14811                          i40e_stat_str(&pf->hw, ret),
14812                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14813                 return -EPERM;
14814         }
14815         ret = i40e_veb_get_bw_info(veb);
14816         if (ret) {
14817                 dev_info(&pf->pdev->dev,
14818                          "couldn't get VEB bw info, err %s aq_err %s\n",
14819                          i40e_stat_str(&pf->hw, ret),
14820                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14821                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14822                 return -ENOENT;
14823         }
14824
14825         vsi->uplink_seid = veb->seid;
14826         vsi->veb_idx = veb->idx;
14827         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14828
14829         return 0;
14830 }
14831
14832 /**
14833  * i40e_veb_setup - Set up a VEB
14834  * @pf: board private structure
14835  * @flags: VEB setup flags
14836  * @uplink_seid: the switch element to link to
14837  * @vsi_seid: the initial VSI seid
14838  * @enabled_tc: Enabled TC bit-map
14839  *
14840  * This allocates the sw VEB structure and links it into the switch
14841  * It is possible and legal for this to be a duplicate of an already
14842  * existing VEB.  It is also possible for both uplink and vsi seids
14843  * to be zero, in order to create a floating VEB.
14844  *
14845  * Returns pointer to the successfully allocated VEB sw struct on
14846  * success, otherwise returns NULL on failure.
14847  **/
14848 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
14849                                 u16 uplink_seid, u16 vsi_seid,
14850                                 u8 enabled_tc)
14851 {
14852         struct i40e_veb *veb, *uplink_veb = NULL;
14853         int vsi_idx, veb_idx;
14854         int ret;
14855
14856         /* if one seid is 0, the other must be 0 to create a floating relay */
14857         if ((uplink_seid == 0 || vsi_seid == 0) &&
14858             (uplink_seid + vsi_seid != 0)) {
14859                 dev_info(&pf->pdev->dev,
14860                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
14861                          uplink_seid, vsi_seid);
14862                 return NULL;
14863         }
14864
14865         /* make sure there is such a vsi and uplink */
14866         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
14867                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
14868                         break;
14869         if (vsi_idx == pf->num_alloc_vsi && vsi_seid != 0) {
14870                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
14871                          vsi_seid);
14872                 return NULL;
14873         }
14874
14875         if (uplink_seid && uplink_seid != pf->mac_seid) {
14876                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
14877                         if (pf->veb[veb_idx] &&
14878                             pf->veb[veb_idx]->seid == uplink_seid) {
14879                                 uplink_veb = pf->veb[veb_idx];
14880                                 break;
14881                         }
14882                 }
14883                 if (!uplink_veb) {
14884                         dev_info(&pf->pdev->dev,
14885                                  "uplink seid %d not found\n", uplink_seid);
14886                         return NULL;
14887                 }
14888         }
14889
14890         /* get veb sw struct */
14891         veb_idx = i40e_veb_mem_alloc(pf);
14892         if (veb_idx < 0)
14893                 goto err_alloc;
14894         veb = pf->veb[veb_idx];
14895         veb->flags = flags;
14896         veb->uplink_seid = uplink_seid;
14897         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
14898         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
14899
14900         /* create the VEB in the switch */
14901         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
14902         if (ret)
14903                 goto err_veb;
14904         if (vsi_idx == pf->lan_vsi)
14905                 pf->lan_veb = veb->idx;
14906
14907         return veb;
14908
14909 err_veb:
14910         i40e_veb_clear(veb);
14911 err_alloc:
14912         return NULL;
14913 }
14914
14915 /**
14916  * i40e_setup_pf_switch_element - set PF vars based on switch type
14917  * @pf: board private structure
14918  * @ele: element we are building info from
14919  * @num_reported: total number of elements
14920  * @printconfig: should we print the contents
14921  *
14922  * helper function to assist in extracting a few useful SEID values.
14923  **/
14924 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
14925                                 struct i40e_aqc_switch_config_element_resp *ele,
14926                                 u16 num_reported, bool printconfig)
14927 {
14928         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
14929         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
14930         u8 element_type = ele->element_type;
14931         u16 seid = le16_to_cpu(ele->seid);
14932
14933         if (printconfig)
14934                 dev_info(&pf->pdev->dev,
14935                          "type=%d seid=%d uplink=%d downlink=%d\n",
14936                          element_type, seid, uplink_seid, downlink_seid);
14937
14938         switch (element_type) {
14939         case I40E_SWITCH_ELEMENT_TYPE_MAC:
14940                 pf->mac_seid = seid;
14941                 break;
14942         case I40E_SWITCH_ELEMENT_TYPE_VEB:
14943                 /* Main VEB? */
14944                 if (uplink_seid != pf->mac_seid)
14945                         break;
14946                 if (pf->lan_veb >= I40E_MAX_VEB) {
14947                         int v;
14948
14949                         /* find existing or else empty VEB */
14950                         for (v = 0; v < I40E_MAX_VEB; v++) {
14951                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
14952                                         pf->lan_veb = v;
14953                                         break;
14954                                 }
14955                         }
14956                         if (pf->lan_veb >= I40E_MAX_VEB) {
14957                                 v = i40e_veb_mem_alloc(pf);
14958                                 if (v < 0)
14959                                         break;
14960                                 pf->lan_veb = v;
14961                         }
14962                 }
14963                 if (pf->lan_veb >= I40E_MAX_VEB)
14964                         break;
14965
14966                 pf->veb[pf->lan_veb]->seid = seid;
14967                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
14968                 pf->veb[pf->lan_veb]->pf = pf;
14969                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
14970                 break;
14971         case I40E_SWITCH_ELEMENT_TYPE_VSI:
14972                 if (num_reported != 1)
14973                         break;
14974                 /* This is immediately after a reset so we can assume this is
14975                  * the PF's VSI
14976                  */
14977                 pf->mac_seid = uplink_seid;
14978                 pf->pf_seid = downlink_seid;
14979                 pf->main_vsi_seid = seid;
14980                 if (printconfig)
14981                         dev_info(&pf->pdev->dev,
14982                                  "pf_seid=%d main_vsi_seid=%d\n",
14983                                  pf->pf_seid, pf->main_vsi_seid);
14984                 break;
14985         case I40E_SWITCH_ELEMENT_TYPE_PF:
14986         case I40E_SWITCH_ELEMENT_TYPE_VF:
14987         case I40E_SWITCH_ELEMENT_TYPE_EMP:
14988         case I40E_SWITCH_ELEMENT_TYPE_BMC:
14989         case I40E_SWITCH_ELEMENT_TYPE_PE:
14990         case I40E_SWITCH_ELEMENT_TYPE_PA:
14991                 /* ignore these for now */
14992                 break;
14993         default:
14994                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
14995                          element_type, seid);
14996                 break;
14997         }
14998 }
14999
15000 /**
15001  * i40e_fetch_switch_configuration - Get switch config from firmware
15002  * @pf: board private structure
15003  * @printconfig: should we print the contents
15004  *
15005  * Get the current switch configuration from the device and
15006  * extract a few useful SEID values.
15007  **/
15008 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
15009 {
15010         struct i40e_aqc_get_switch_config_resp *sw_config;
15011         u16 next_seid = 0;
15012         int ret = 0;
15013         u8 *aq_buf;
15014         int i;
15015
15016         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
15017         if (!aq_buf)
15018                 return -ENOMEM;
15019
15020         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
15021         do {
15022                 u16 num_reported, num_total;
15023
15024                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
15025                                                 I40E_AQ_LARGE_BUF,
15026                                                 &next_seid, NULL);
15027                 if (ret) {
15028                         dev_info(&pf->pdev->dev,
15029                                  "get switch config failed err %s aq_err %s\n",
15030                                  i40e_stat_str(&pf->hw, ret),
15031                                  i40e_aq_str(&pf->hw,
15032                                              pf->hw.aq.asq_last_status));
15033                         kfree(aq_buf);
15034                         return -ENOENT;
15035                 }
15036
15037                 num_reported = le16_to_cpu(sw_config->header.num_reported);
15038                 num_total = le16_to_cpu(sw_config->header.num_total);
15039
15040                 if (printconfig)
15041                         dev_info(&pf->pdev->dev,
15042                                  "header: %d reported %d total\n",
15043                                  num_reported, num_total);
15044
15045                 for (i = 0; i < num_reported; i++) {
15046                         struct i40e_aqc_switch_config_element_resp *ele =
15047                                 &sw_config->element[i];
15048
15049                         i40e_setup_pf_switch_element(pf, ele, num_reported,
15050                                                      printconfig);
15051                 }
15052         } while (next_seid != 0);
15053
15054         kfree(aq_buf);
15055         return ret;
15056 }
15057
15058 /**
15059  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
15060  * @pf: board private structure
15061  * @reinit: if the Main VSI needs to re-initialized.
15062  * @lock_acquired: indicates whether or not the lock has been acquired
15063  *
15064  * Returns 0 on success, negative value on failure
15065  **/
15066 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit, bool lock_acquired)
15067 {
15068         u16 flags = 0;
15069         int ret;
15070
15071         /* find out what's out there already */
15072         ret = i40e_fetch_switch_configuration(pf, false);
15073         if (ret) {
15074                 dev_info(&pf->pdev->dev,
15075                          "couldn't fetch switch config, err %s aq_err %s\n",
15076                          i40e_stat_str(&pf->hw, ret),
15077                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15078                 return ret;
15079         }
15080         i40e_pf_reset_stats(pf);
15081
15082         /* set the switch config bit for the whole device to
15083          * support limited promisc or true promisc
15084          * when user requests promisc. The default is limited
15085          * promisc.
15086         */
15087
15088         if ((pf->hw.pf_id == 0) &&
15089             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) {
15090                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
15091                 pf->last_sw_conf_flags = flags;
15092         }
15093
15094         if (pf->hw.pf_id == 0) {
15095                 u16 valid_flags;
15096
15097                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
15098                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags, 0,
15099                                                 NULL);
15100                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
15101                         dev_info(&pf->pdev->dev,
15102                                  "couldn't set switch config bits, err %s aq_err %s\n",
15103                                  i40e_stat_str(&pf->hw, ret),
15104                                  i40e_aq_str(&pf->hw,
15105                                              pf->hw.aq.asq_last_status));
15106                         /* not a fatal problem, just keep going */
15107                 }
15108                 pf->last_sw_conf_valid_flags = valid_flags;
15109         }
15110
15111         /* first time setup */
15112         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
15113                 struct i40e_vsi *vsi = NULL;
15114                 u16 uplink_seid;
15115
15116                 /* Set up the PF VSI associated with the PF's main VSI
15117                  * that is already in the HW switch
15118                  */
15119                 if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
15120                         uplink_seid = pf->veb[pf->lan_veb]->seid;
15121                 else
15122                         uplink_seid = pf->mac_seid;
15123                 if (pf->lan_vsi == I40E_NO_VSI)
15124                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
15125                 else if (reinit)
15126                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
15127                 if (!vsi) {
15128                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
15129                         i40e_cloud_filter_exit(pf);
15130                         i40e_fdir_teardown(pf);
15131                         return -EAGAIN;
15132                 }
15133         } else {
15134                 /* force a reset of TC and queue layout configurations */
15135                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
15136
15137                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
15138                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
15139                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
15140         }
15141         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
15142
15143         i40e_fdir_sb_setup(pf);
15144
15145         /* Setup static PF queue filter control settings */
15146         ret = i40e_setup_pf_filter_control(pf);
15147         if (ret) {
15148                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
15149                          ret);
15150                 /* Failure here should not stop continuing other steps */
15151         }
15152
15153         /* enable RSS in the HW, even for only one queue, as the stack can use
15154          * the hash
15155          */
15156         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
15157                 i40e_pf_config_rss(pf);
15158
15159         /* fill in link information and enable LSE reporting */
15160         i40e_link_event(pf);
15161
15162         /* Initialize user-specific link properties */
15163         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
15164                                   I40E_AQ_AN_COMPLETED) ? true : false);
15165
15166         i40e_ptp_init(pf);
15167
15168         if (!lock_acquired)
15169                 rtnl_lock();
15170
15171         /* repopulate tunnel port filters */
15172         udp_tunnel_nic_reset_ntf(pf->vsi[pf->lan_vsi]->netdev);
15173
15174         if (!lock_acquired)
15175                 rtnl_unlock();
15176
15177         return ret;
15178 }
15179
15180 /**
15181  * i40e_determine_queue_usage - Work out queue distribution
15182  * @pf: board private structure
15183  **/
15184 static void i40e_determine_queue_usage(struct i40e_pf *pf)
15185 {
15186         int queues_left;
15187         int q_max;
15188
15189         pf->num_lan_qps = 0;
15190
15191         /* Find the max queues to be put into basic use.  We'll always be
15192          * using TC0, whether or not DCB is running, and TC0 will get the
15193          * big RSS set.
15194          */
15195         queues_left = pf->hw.func_caps.num_tx_qp;
15196
15197         if ((queues_left == 1) ||
15198             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
15199                 /* one qp for PF, no queues for anything else */
15200                 queues_left = 0;
15201                 pf->alloc_rss_size = pf->num_lan_qps = 1;
15202
15203                 /* make sure all the fancies are disabled */
15204                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
15205                                I40E_FLAG_IWARP_ENABLED  |
15206                                I40E_FLAG_FD_SB_ENABLED  |
15207                                I40E_FLAG_FD_ATR_ENABLED |
15208                                I40E_FLAG_DCB_CAPABLE    |
15209                                I40E_FLAG_DCB_ENABLED    |
15210                                I40E_FLAG_SRIOV_ENABLED  |
15211                                I40E_FLAG_VMDQ_ENABLED);
15212                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
15213         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
15214                                   I40E_FLAG_FD_SB_ENABLED |
15215                                   I40E_FLAG_FD_ATR_ENABLED |
15216                                   I40E_FLAG_DCB_CAPABLE))) {
15217                 /* one qp for PF */
15218                 pf->alloc_rss_size = pf->num_lan_qps = 1;
15219                 queues_left -= pf->num_lan_qps;
15220
15221                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
15222                                I40E_FLAG_IWARP_ENABLED  |
15223                                I40E_FLAG_FD_SB_ENABLED  |
15224                                I40E_FLAG_FD_ATR_ENABLED |
15225                                I40E_FLAG_DCB_ENABLED    |
15226                                I40E_FLAG_VMDQ_ENABLED);
15227                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
15228         } else {
15229                 /* Not enough queues for all TCs */
15230                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
15231                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
15232                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
15233                                         I40E_FLAG_DCB_ENABLED);
15234                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
15235                 }
15236
15237                 /* limit lan qps to the smaller of qps, cpus or msix */
15238                 q_max = max_t(int, pf->rss_size_max, num_online_cpus());
15239                 q_max = min_t(int, q_max, pf->hw.func_caps.num_tx_qp);
15240                 q_max = min_t(int, q_max, pf->hw.func_caps.num_msix_vectors);
15241                 pf->num_lan_qps = q_max;
15242
15243                 queues_left -= pf->num_lan_qps;
15244         }
15245
15246         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
15247                 if (queues_left > 1) {
15248                         queues_left -= 1; /* save 1 queue for FD */
15249                 } else {
15250                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
15251                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
15252                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
15253                 }
15254         }
15255
15256         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15257             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
15258                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
15259                                         (queues_left / pf->num_vf_qps));
15260                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
15261         }
15262
15263         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
15264             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
15265                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
15266                                           (queues_left / pf->num_vmdq_qps));
15267                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
15268         }
15269
15270         pf->queues_left = queues_left;
15271         dev_dbg(&pf->pdev->dev,
15272                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
15273                 pf->hw.func_caps.num_tx_qp,
15274                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
15275                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
15276                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
15277                 queues_left);
15278 }
15279
15280 /**
15281  * i40e_setup_pf_filter_control - Setup PF static filter control
15282  * @pf: PF to be setup
15283  *
15284  * i40e_setup_pf_filter_control sets up a PF's initial filter control
15285  * settings. If PE/FCoE are enabled then it will also set the per PF
15286  * based filter sizes required for them. It also enables Flow director,
15287  * ethertype and macvlan type filter settings for the pf.
15288  *
15289  * Returns 0 on success, negative on failure
15290  **/
15291 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
15292 {
15293         struct i40e_filter_control_settings *settings = &pf->filter_settings;
15294
15295         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
15296
15297         /* Flow Director is enabled */
15298         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
15299                 settings->enable_fdir = true;
15300
15301         /* Ethtype and MACVLAN filters enabled for PF */
15302         settings->enable_ethtype = true;
15303         settings->enable_macvlan = true;
15304
15305         if (i40e_set_filter_control(&pf->hw, settings))
15306                 return -ENOENT;
15307
15308         return 0;
15309 }
15310
15311 #define INFO_STRING_LEN 255
15312 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
15313 static void i40e_print_features(struct i40e_pf *pf)
15314 {
15315         struct i40e_hw *hw = &pf->hw;
15316         char *buf;
15317         int i;
15318
15319         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
15320         if (!buf)
15321                 return;
15322
15323         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
15324 #ifdef CONFIG_PCI_IOV
15325         i += scnprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
15326 #endif
15327         i += scnprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
15328                       pf->hw.func_caps.num_vsis,
15329                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
15330         if (pf->flags & I40E_FLAG_RSS_ENABLED)
15331                 i += scnprintf(&buf[i], REMAIN(i), " RSS");
15332         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
15333                 i += scnprintf(&buf[i], REMAIN(i), " FD_ATR");
15334         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
15335                 i += scnprintf(&buf[i], REMAIN(i), " FD_SB");
15336                 i += scnprintf(&buf[i], REMAIN(i), " NTUPLE");
15337         }
15338         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
15339                 i += scnprintf(&buf[i], REMAIN(i), " DCB");
15340         i += scnprintf(&buf[i], REMAIN(i), " VxLAN");
15341         i += scnprintf(&buf[i], REMAIN(i), " Geneve");
15342         if (pf->flags & I40E_FLAG_PTP)
15343                 i += scnprintf(&buf[i], REMAIN(i), " PTP");
15344         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
15345                 i += scnprintf(&buf[i], REMAIN(i), " VEB");
15346         else
15347                 i += scnprintf(&buf[i], REMAIN(i), " VEPA");
15348
15349         dev_info(&pf->pdev->dev, "%s\n", buf);
15350         kfree(buf);
15351         WARN_ON(i > INFO_STRING_LEN);
15352 }
15353
15354 /**
15355  * i40e_get_platform_mac_addr - get platform-specific MAC address
15356  * @pdev: PCI device information struct
15357  * @pf: board private structure
15358  *
15359  * Look up the MAC address for the device. First we'll try
15360  * eth_platform_get_mac_address, which will check Open Firmware, or arch
15361  * specific fallback. Otherwise, we'll default to the stored value in
15362  * firmware.
15363  **/
15364 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
15365 {
15366         if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
15367                 i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
15368 }
15369
15370 /**
15371  * i40e_set_fec_in_flags - helper function for setting FEC options in flags
15372  * @fec_cfg: FEC option to set in flags
15373  * @flags: ptr to flags in which we set FEC option
15374  **/
15375 void i40e_set_fec_in_flags(u8 fec_cfg, u32 *flags)
15376 {
15377         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
15378                 *flags |= I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC;
15379         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_RS) ||
15380             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_RS)) {
15381                 *flags |= I40E_FLAG_RS_FEC;
15382                 *flags &= ~I40E_FLAG_BASE_R_FEC;
15383         }
15384         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_KR) ||
15385             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_KR)) {
15386                 *flags |= I40E_FLAG_BASE_R_FEC;
15387                 *flags &= ~I40E_FLAG_RS_FEC;
15388         }
15389         if (fec_cfg == 0)
15390                 *flags &= ~(I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC);
15391 }
15392
15393 /**
15394  * i40e_check_recovery_mode - check if we are running transition firmware
15395  * @pf: board private structure
15396  *
15397  * Check registers indicating the firmware runs in recovery mode. Sets the
15398  * appropriate driver state.
15399  *
15400  * Returns true if the recovery mode was detected, false otherwise
15401  **/
15402 static bool i40e_check_recovery_mode(struct i40e_pf *pf)
15403 {
15404         u32 val = rd32(&pf->hw, I40E_GL_FWSTS);
15405
15406         if (val & I40E_GL_FWSTS_FWS1B_MASK) {
15407                 dev_crit(&pf->pdev->dev, "Firmware recovery mode detected. Limiting functionality.\n");
15408                 dev_crit(&pf->pdev->dev, "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
15409                 set_bit(__I40E_RECOVERY_MODE, pf->state);
15410
15411                 return true;
15412         }
15413         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15414                 dev_info(&pf->pdev->dev, "Please do Power-On Reset to initialize adapter in normal mode with full functionality.\n");
15415
15416         return false;
15417 }
15418
15419 /**
15420  * i40e_pf_loop_reset - perform reset in a loop.
15421  * @pf: board private structure
15422  *
15423  * This function is useful when a NIC is about to enter recovery mode.
15424  * When a NIC's internal data structures are corrupted the NIC's
15425  * firmware is going to enter recovery mode.
15426  * Right after a POR it takes about 7 minutes for firmware to enter
15427  * recovery mode. Until that time a NIC is in some kind of intermediate
15428  * state. After that time period the NIC almost surely enters
15429  * recovery mode. The only way for a driver to detect intermediate
15430  * state is to issue a series of pf-resets and check a return value.
15431  * If a PF reset returns success then the firmware could be in recovery
15432  * mode so the caller of this code needs to check for recovery mode
15433  * if this function returns success. There is a little chance that
15434  * firmware will hang in intermediate state forever.
15435  * Since waiting 7 minutes is quite a lot of time this function waits
15436  * 10 seconds and then gives up by returning an error.
15437  *
15438  * Return 0 on success, negative on failure.
15439  **/
15440 static i40e_status i40e_pf_loop_reset(struct i40e_pf *pf)
15441 {
15442         /* wait max 10 seconds for PF reset to succeed */
15443         const unsigned long time_end = jiffies + 10 * HZ;
15444
15445         struct i40e_hw *hw = &pf->hw;
15446         i40e_status ret;
15447
15448         ret = i40e_pf_reset(hw);
15449         while (ret != I40E_SUCCESS && time_before(jiffies, time_end)) {
15450                 usleep_range(10000, 20000);
15451                 ret = i40e_pf_reset(hw);
15452         }
15453
15454         if (ret == I40E_SUCCESS)
15455                 pf->pfr_count++;
15456         else
15457                 dev_info(&pf->pdev->dev, "PF reset failed: %d\n", ret);
15458
15459         return ret;
15460 }
15461
15462 /**
15463  * i40e_check_fw_empr - check if FW issued unexpected EMP Reset
15464  * @pf: board private structure
15465  *
15466  * Check FW registers to determine if FW issued unexpected EMP Reset.
15467  * Every time when unexpected EMP Reset occurs the FW increments
15468  * a counter of unexpected EMP Resets. When the counter reaches 10
15469  * the FW should enter the Recovery mode
15470  *
15471  * Returns true if FW issued unexpected EMP Reset
15472  **/
15473 static bool i40e_check_fw_empr(struct i40e_pf *pf)
15474 {
15475         const u32 fw_sts = rd32(&pf->hw, I40E_GL_FWSTS) &
15476                            I40E_GL_FWSTS_FWS1B_MASK;
15477         return (fw_sts > I40E_GL_FWSTS_FWS1B_EMPR_0) &&
15478                (fw_sts <= I40E_GL_FWSTS_FWS1B_EMPR_10);
15479 }
15480
15481 /**
15482  * i40e_handle_resets - handle EMP resets and PF resets
15483  * @pf: board private structure
15484  *
15485  * Handle both EMP resets and PF resets and conclude whether there are
15486  * any issues regarding these resets. If there are any issues then
15487  * generate log entry.
15488  *
15489  * Return 0 if NIC is healthy or negative value when there are issues
15490  * with resets
15491  **/
15492 static i40e_status i40e_handle_resets(struct i40e_pf *pf)
15493 {
15494         const i40e_status pfr = i40e_pf_loop_reset(pf);
15495         const bool is_empr = i40e_check_fw_empr(pf);
15496
15497         if (is_empr || pfr != I40E_SUCCESS)
15498                 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");
15499
15500         return is_empr ? I40E_ERR_RESET_FAILED : pfr;
15501 }
15502
15503 /**
15504  * i40e_init_recovery_mode - initialize subsystems needed in recovery mode
15505  * @pf: board private structure
15506  * @hw: ptr to the hardware info
15507  *
15508  * This function does a minimal setup of all subsystems needed for running
15509  * recovery mode.
15510  *
15511  * Returns 0 on success, negative on failure
15512  **/
15513 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw)
15514 {
15515         struct i40e_vsi *vsi;
15516         int err;
15517         int v_idx;
15518
15519         pci_save_state(pf->pdev);
15520
15521         /* set up periodic task facility */
15522         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15523         pf->service_timer_period = HZ;
15524
15525         INIT_WORK(&pf->service_task, i40e_service_task);
15526         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15527
15528         err = i40e_init_interrupt_scheme(pf);
15529         if (err)
15530                 goto err_switch_setup;
15531
15532         /* The number of VSIs reported by the FW is the minimum guaranteed
15533          * to us; HW supports far more and we share the remaining pool with
15534          * the other PFs. We allocate space for more than the guarantee with
15535          * the understanding that we might not get them all later.
15536          */
15537         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15538                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15539         else
15540                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15541
15542         /* Set up the vsi struct and our local tracking of the MAIN PF vsi. */
15543         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15544                           GFP_KERNEL);
15545         if (!pf->vsi) {
15546                 err = -ENOMEM;
15547                 goto err_switch_setup;
15548         }
15549
15550         /* We allocate one VSI which is needed as absolute minimum
15551          * in order to register the netdev
15552          */
15553         v_idx = i40e_vsi_mem_alloc(pf, I40E_VSI_MAIN);
15554         if (v_idx < 0) {
15555                 err = v_idx;
15556                 goto err_switch_setup;
15557         }
15558         pf->lan_vsi = v_idx;
15559         vsi = pf->vsi[v_idx];
15560         if (!vsi) {
15561                 err = -EFAULT;
15562                 goto err_switch_setup;
15563         }
15564         vsi->alloc_queue_pairs = 1;
15565         err = i40e_config_netdev(vsi);
15566         if (err)
15567                 goto err_switch_setup;
15568         err = register_netdev(vsi->netdev);
15569         if (err)
15570                 goto err_switch_setup;
15571         vsi->netdev_registered = true;
15572         i40e_dbg_pf_init(pf);
15573
15574         err = i40e_setup_misc_vector_for_recovery_mode(pf);
15575         if (err)
15576                 goto err_switch_setup;
15577
15578         /* tell the firmware that we're starting */
15579         i40e_send_version(pf);
15580
15581         /* since everything's happy, start the service_task timer */
15582         mod_timer(&pf->service_timer,
15583                   round_jiffies(jiffies + pf->service_timer_period));
15584
15585         return 0;
15586
15587 err_switch_setup:
15588         i40e_reset_interrupt_capability(pf);
15589         timer_shutdown_sync(&pf->service_timer);
15590         i40e_shutdown_adminq(hw);
15591         iounmap(hw->hw_addr);
15592         pci_disable_pcie_error_reporting(pf->pdev);
15593         pci_release_mem_regions(pf->pdev);
15594         pci_disable_device(pf->pdev);
15595         kfree(pf);
15596
15597         return err;
15598 }
15599
15600 /**
15601  * i40e_set_subsystem_device_id - set subsystem device id
15602  * @hw: pointer to the hardware info
15603  *
15604  * Set PCI subsystem device id either from a pci_dev structure or
15605  * a specific FW register.
15606  **/
15607 static inline void i40e_set_subsystem_device_id(struct i40e_hw *hw)
15608 {
15609         struct pci_dev *pdev = ((struct i40e_pf *)hw->back)->pdev;
15610
15611         hw->subsystem_device_id = pdev->subsystem_device ?
15612                 pdev->subsystem_device :
15613                 (ushort)(rd32(hw, I40E_PFPCI_SUBSYSID) & USHRT_MAX);
15614 }
15615
15616 /**
15617  * i40e_probe - Device initialization routine
15618  * @pdev: PCI device information struct
15619  * @ent: entry in i40e_pci_tbl
15620  *
15621  * i40e_probe initializes a PF identified by a pci_dev structure.
15622  * The OS initialization, configuring of the PF private structure,
15623  * and a hardware reset occur.
15624  *
15625  * Returns 0 on success, negative on failure
15626  **/
15627 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
15628 {
15629         struct i40e_aq_get_phy_abilities_resp abilities;
15630 #ifdef CONFIG_I40E_DCB
15631         enum i40e_get_fw_lldp_status_resp lldp_status;
15632         i40e_status status;
15633 #endif /* CONFIG_I40E_DCB */
15634         struct i40e_pf *pf;
15635         struct i40e_hw *hw;
15636         static u16 pfs_found;
15637         u16 wol_nvm_bits;
15638         u16 link_status;
15639         int err;
15640         u32 val;
15641         u32 i;
15642
15643         err = pci_enable_device_mem(pdev);
15644         if (err)
15645                 return err;
15646
15647         /* set up for high or low dma */
15648         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
15649         if (err) {
15650                 dev_err(&pdev->dev,
15651                         "DMA configuration failed: 0x%x\n", err);
15652                 goto err_dma;
15653         }
15654
15655         /* set up pci connections */
15656         err = pci_request_mem_regions(pdev, i40e_driver_name);
15657         if (err) {
15658                 dev_info(&pdev->dev,
15659                          "pci_request_selected_regions failed %d\n", err);
15660                 goto err_pci_reg;
15661         }
15662
15663         pci_enable_pcie_error_reporting(pdev);
15664         pci_set_master(pdev);
15665
15666         /* Now that we have a PCI connection, we need to do the
15667          * low level device setup.  This is primarily setting up
15668          * the Admin Queue structures and then querying for the
15669          * device's current profile information.
15670          */
15671         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
15672         if (!pf) {
15673                 err = -ENOMEM;
15674                 goto err_pf_alloc;
15675         }
15676         pf->next_vsi = 0;
15677         pf->pdev = pdev;
15678         set_bit(__I40E_DOWN, pf->state);
15679
15680         hw = &pf->hw;
15681         hw->back = pf;
15682
15683         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
15684                                 I40E_MAX_CSR_SPACE);
15685         /* We believe that the highest register to read is
15686          * I40E_GLGEN_STAT_CLEAR, so we check if the BAR size
15687          * is not less than that before mapping to prevent a
15688          * kernel panic.
15689          */
15690         if (pf->ioremap_len < I40E_GLGEN_STAT_CLEAR) {
15691                 dev_err(&pdev->dev, "Cannot map registers, bar size 0x%X too small, aborting\n",
15692                         pf->ioremap_len);
15693                 err = -ENOMEM;
15694                 goto err_ioremap;
15695         }
15696         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
15697         if (!hw->hw_addr) {
15698                 err = -EIO;
15699                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
15700                          (unsigned int)pci_resource_start(pdev, 0),
15701                          pf->ioremap_len, err);
15702                 goto err_ioremap;
15703         }
15704         hw->vendor_id = pdev->vendor;
15705         hw->device_id = pdev->device;
15706         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
15707         hw->subsystem_vendor_id = pdev->subsystem_vendor;
15708         i40e_set_subsystem_device_id(hw);
15709         hw->bus.device = PCI_SLOT(pdev->devfn);
15710         hw->bus.func = PCI_FUNC(pdev->devfn);
15711         hw->bus.bus_id = pdev->bus->number;
15712         pf->instance = pfs_found;
15713
15714         /* Select something other than the 802.1ad ethertype for the
15715          * switch to use internally and drop on ingress.
15716          */
15717         hw->switch_tag = 0xffff;
15718         hw->first_tag = ETH_P_8021AD;
15719         hw->second_tag = ETH_P_8021Q;
15720
15721         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
15722         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
15723         INIT_LIST_HEAD(&pf->ddp_old_prof);
15724
15725         /* set up the locks for the AQ, do this only once in probe
15726          * and destroy them only once in remove
15727          */
15728         mutex_init(&hw->aq.asq_mutex);
15729         mutex_init(&hw->aq.arq_mutex);
15730
15731         pf->msg_enable = netif_msg_init(debug,
15732                                         NETIF_MSG_DRV |
15733                                         NETIF_MSG_PROBE |
15734                                         NETIF_MSG_LINK);
15735         if (debug < -1)
15736                 pf->hw.debug_mask = debug;
15737
15738         /* do a special CORER for clearing PXE mode once at init */
15739         if (hw->revision_id == 0 &&
15740             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
15741                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
15742                 i40e_flush(hw);
15743                 msleep(200);
15744                 pf->corer_count++;
15745
15746                 i40e_clear_pxe_mode(hw);
15747         }
15748
15749         /* Reset here to make sure all is clean and to define PF 'n' */
15750         i40e_clear_hw(hw);
15751
15752         err = i40e_set_mac_type(hw);
15753         if (err) {
15754                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15755                          err);
15756                 goto err_pf_reset;
15757         }
15758
15759         err = i40e_handle_resets(pf);
15760         if (err)
15761                 goto err_pf_reset;
15762
15763         i40e_check_recovery_mode(pf);
15764
15765         if (is_kdump_kernel()) {
15766                 hw->aq.num_arq_entries = I40E_MIN_ARQ_LEN;
15767                 hw->aq.num_asq_entries = I40E_MIN_ASQ_LEN;
15768         } else {
15769                 hw->aq.num_arq_entries = I40E_AQ_LEN;
15770                 hw->aq.num_asq_entries = I40E_AQ_LEN;
15771         }
15772         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15773         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15774         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
15775
15776         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
15777                  "%s-%s:misc",
15778                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
15779
15780         err = i40e_init_shared_code(hw);
15781         if (err) {
15782                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15783                          err);
15784                 goto err_pf_reset;
15785         }
15786
15787         /* set up a default setting for link flow control */
15788         pf->hw.fc.requested_mode = I40E_FC_NONE;
15789
15790         err = i40e_init_adminq(hw);
15791         if (err) {
15792                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
15793                         dev_info(&pdev->dev,
15794                                  "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",
15795                                  hw->aq.api_maj_ver,
15796                                  hw->aq.api_min_ver,
15797                                  I40E_FW_API_VERSION_MAJOR,
15798                                  I40E_FW_MINOR_VERSION(hw));
15799                 else
15800                         dev_info(&pdev->dev,
15801                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
15802
15803                 goto err_pf_reset;
15804         }
15805         i40e_get_oem_version(hw);
15806
15807         /* provide nvm, fw, api versions, vendor:device id, subsys vendor:device id */
15808         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s [%04x:%04x] [%04x:%04x]\n",
15809                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
15810                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
15811                  i40e_nvm_version_str(hw), hw->vendor_id, hw->device_id,
15812                  hw->subsystem_vendor_id, hw->subsystem_device_id);
15813
15814         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
15815             hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
15816                 dev_dbg(&pdev->dev,
15817                         "The driver for the device detected a newer version of the NVM image v%u.%u than v%u.%u.\n",
15818                          hw->aq.api_maj_ver,
15819                          hw->aq.api_min_ver,
15820                          I40E_FW_API_VERSION_MAJOR,
15821                          I40E_FW_MINOR_VERSION(hw));
15822         else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
15823                 dev_info(&pdev->dev,
15824                          "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",
15825                          hw->aq.api_maj_ver,
15826                          hw->aq.api_min_ver,
15827                          I40E_FW_API_VERSION_MAJOR,
15828                          I40E_FW_MINOR_VERSION(hw));
15829
15830         i40e_verify_eeprom(pf);
15831
15832         /* Rev 0 hardware was never productized */
15833         if (hw->revision_id < 1)
15834                 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");
15835
15836         i40e_clear_pxe_mode(hw);
15837
15838         err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
15839         if (err)
15840                 goto err_adminq_setup;
15841
15842         err = i40e_sw_init(pf);
15843         if (err) {
15844                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
15845                 goto err_sw_init;
15846         }
15847
15848         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15849                 return i40e_init_recovery_mode(pf, hw);
15850
15851         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
15852                                 hw->func_caps.num_rx_qp, 0, 0);
15853         if (err) {
15854                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
15855                 goto err_init_lan_hmc;
15856         }
15857
15858         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
15859         if (err) {
15860                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
15861                 err = -ENOENT;
15862                 goto err_configure_lan_hmc;
15863         }
15864
15865         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
15866          * Ignore error return codes because if it was already disabled via
15867          * hardware settings this will fail
15868          */
15869         if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
15870                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
15871                 i40e_aq_stop_lldp(hw, true, false, NULL);
15872         }
15873
15874         /* allow a platform config to override the HW addr */
15875         i40e_get_platform_mac_addr(pdev, pf);
15876
15877         if (!is_valid_ether_addr(hw->mac.addr)) {
15878                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
15879                 err = -EIO;
15880                 goto err_mac_addr;
15881         }
15882         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
15883         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
15884         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
15885         if (is_valid_ether_addr(hw->mac.port_addr))
15886                 pf->hw_features |= I40E_HW_PORT_ID_VALID;
15887
15888         i40e_ptp_alloc_pins(pf);
15889         pci_set_drvdata(pdev, pf);
15890         pci_save_state(pdev);
15891
15892 #ifdef CONFIG_I40E_DCB
15893         status = i40e_get_fw_lldp_status(&pf->hw, &lldp_status);
15894         (!status &&
15895          lldp_status == I40E_GET_FW_LLDP_STATUS_ENABLED) ?
15896                 (pf->flags &= ~I40E_FLAG_DISABLE_FW_LLDP) :
15897                 (pf->flags |= I40E_FLAG_DISABLE_FW_LLDP);
15898         dev_info(&pdev->dev,
15899                  (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) ?
15900                         "FW LLDP is disabled\n" :
15901                         "FW LLDP is enabled\n");
15902
15903         /* Enable FW to write default DCB config on link-up */
15904         i40e_aq_set_dcb_parameters(hw, true, NULL);
15905
15906         err = i40e_init_pf_dcb(pf);
15907         if (err) {
15908                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
15909                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
15910                 /* Continue without DCB enabled */
15911         }
15912 #endif /* CONFIG_I40E_DCB */
15913
15914         /* set up periodic task facility */
15915         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15916         pf->service_timer_period = HZ;
15917
15918         INIT_WORK(&pf->service_task, i40e_service_task);
15919         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15920
15921         /* NVM bit on means WoL disabled for the port */
15922         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
15923         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
15924                 pf->wol_en = false;
15925         else
15926                 pf->wol_en = true;
15927         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
15928
15929         /* set up the main switch operations */
15930         i40e_determine_queue_usage(pf);
15931         err = i40e_init_interrupt_scheme(pf);
15932         if (err)
15933                 goto err_switch_setup;
15934
15935         /* Reduce Tx and Rx pairs for kdump
15936          * When MSI-X is enabled, it's not allowed to use more TC queue
15937          * pairs than MSI-X vectors (pf->num_lan_msix) exist. Thus
15938          * vsi->num_queue_pairs will be equal to pf->num_lan_msix, i.e., 1.
15939          */
15940         if (is_kdump_kernel())
15941                 pf->num_lan_msix = 1;
15942
15943         pf->udp_tunnel_nic.set_port = i40e_udp_tunnel_set_port;
15944         pf->udp_tunnel_nic.unset_port = i40e_udp_tunnel_unset_port;
15945         pf->udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
15946         pf->udp_tunnel_nic.shared = &pf->udp_tunnel_shared;
15947         pf->udp_tunnel_nic.tables[0].n_entries = I40E_MAX_PF_UDP_OFFLOAD_PORTS;
15948         pf->udp_tunnel_nic.tables[0].tunnel_types = UDP_TUNNEL_TYPE_VXLAN |
15949                                                     UDP_TUNNEL_TYPE_GENEVE;
15950
15951         /* The number of VSIs reported by the FW is the minimum guaranteed
15952          * to us; HW supports far more and we share the remaining pool with
15953          * the other PFs. We allocate space for more than the guarantee with
15954          * the understanding that we might not get them all later.
15955          */
15956         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15957                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15958         else
15959                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15960         if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
15961                 dev_warn(&pf->pdev->dev,
15962                          "limiting the VSI count due to UDP tunnel limitation %d > %d\n",
15963                          pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
15964                 pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
15965         }
15966
15967         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
15968         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15969                           GFP_KERNEL);
15970         if (!pf->vsi) {
15971                 err = -ENOMEM;
15972                 goto err_switch_setup;
15973         }
15974
15975 #ifdef CONFIG_PCI_IOV
15976         /* prep for VF support */
15977         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15978             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15979             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15980                 if (pci_num_vf(pdev))
15981                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
15982         }
15983 #endif
15984         err = i40e_setup_pf_switch(pf, false, false);
15985         if (err) {
15986                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
15987                 goto err_vsis;
15988         }
15989         INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
15990
15991         /* if FDIR VSI was set up, start it now */
15992         for (i = 0; i < pf->num_alloc_vsi; i++) {
15993                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
15994                         i40e_vsi_open(pf->vsi[i]);
15995                         break;
15996                 }
15997         }
15998
15999         /* The driver only wants link up/down and module qualification
16000          * reports from firmware.  Note the negative logic.
16001          */
16002         err = i40e_aq_set_phy_int_mask(&pf->hw,
16003                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
16004                                          I40E_AQ_EVENT_MEDIA_NA |
16005                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
16006         if (err)
16007                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
16008                          i40e_stat_str(&pf->hw, err),
16009                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
16010
16011         /* Reconfigure hardware for allowing smaller MSS in the case
16012          * of TSO, so that we avoid the MDD being fired and causing
16013          * a reset in the case of small MSS+TSO.
16014          */
16015         val = rd32(hw, I40E_REG_MSS);
16016         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
16017                 val &= ~I40E_REG_MSS_MIN_MASK;
16018                 val |= I40E_64BYTE_MSS;
16019                 wr32(hw, I40E_REG_MSS, val);
16020         }
16021
16022         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
16023                 msleep(75);
16024                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
16025                 if (err)
16026                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
16027                                  i40e_stat_str(&pf->hw, err),
16028                                  i40e_aq_str(&pf->hw,
16029                                              pf->hw.aq.asq_last_status));
16030         }
16031         /* The main driver is (mostly) up and happy. We need to set this state
16032          * before setting up the misc vector or we get a race and the vector
16033          * ends up disabled forever.
16034          */
16035         clear_bit(__I40E_DOWN, pf->state);
16036
16037         /* In case of MSIX we are going to setup the misc vector right here
16038          * to handle admin queue events etc. In case of legacy and MSI
16039          * the misc functionality and queue processing is combined in
16040          * the same vector and that gets setup at open.
16041          */
16042         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
16043                 err = i40e_setup_misc_vector(pf);
16044                 if (err) {
16045                         dev_info(&pdev->dev,
16046                                  "setup of misc vector failed: %d\n", err);
16047                         i40e_cloud_filter_exit(pf);
16048                         i40e_fdir_teardown(pf);
16049                         goto err_vsis;
16050                 }
16051         }
16052
16053 #ifdef CONFIG_PCI_IOV
16054         /* prep for VF support */
16055         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
16056             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
16057             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
16058                 /* disable link interrupts for VFs */
16059                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
16060                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
16061                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
16062                 i40e_flush(hw);
16063
16064                 if (pci_num_vf(pdev)) {
16065                         dev_info(&pdev->dev,
16066                                  "Active VFs found, allocating resources.\n");
16067                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
16068                         if (err)
16069                                 dev_info(&pdev->dev,
16070                                          "Error %d allocating resources for existing VFs\n",
16071                                          err);
16072                 }
16073         }
16074 #endif /* CONFIG_PCI_IOV */
16075
16076         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
16077                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
16078                                                       pf->num_iwarp_msix,
16079                                                       I40E_IWARP_IRQ_PILE_ID);
16080                 if (pf->iwarp_base_vector < 0) {
16081                         dev_info(&pdev->dev,
16082                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
16083                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
16084                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
16085                 }
16086         }
16087
16088         i40e_dbg_pf_init(pf);
16089
16090         /* tell the firmware that we're starting */
16091         i40e_send_version(pf);
16092
16093         /* since everything's happy, start the service_task timer */
16094         mod_timer(&pf->service_timer,
16095                   round_jiffies(jiffies + pf->service_timer_period));
16096
16097         /* add this PF to client device list and launch a client service task */
16098         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
16099                 err = i40e_lan_add_device(pf);
16100                 if (err)
16101                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
16102                                  err);
16103         }
16104
16105 #define PCI_SPEED_SIZE 8
16106 #define PCI_WIDTH_SIZE 8
16107         /* Devices on the IOSF bus do not have this information
16108          * and will report PCI Gen 1 x 1 by default so don't bother
16109          * checking them.
16110          */
16111         if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
16112                 char speed[PCI_SPEED_SIZE] = "Unknown";
16113                 char width[PCI_WIDTH_SIZE] = "Unknown";
16114
16115                 /* Get the negotiated link width and speed from PCI config
16116                  * space
16117                  */
16118                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
16119                                           &link_status);
16120
16121                 i40e_set_pci_config_data(hw, link_status);
16122
16123                 switch (hw->bus.speed) {
16124                 case i40e_bus_speed_8000:
16125                         strscpy(speed, "8.0", PCI_SPEED_SIZE); break;
16126                 case i40e_bus_speed_5000:
16127                         strscpy(speed, "5.0", PCI_SPEED_SIZE); break;
16128                 case i40e_bus_speed_2500:
16129                         strscpy(speed, "2.5", PCI_SPEED_SIZE); break;
16130                 default:
16131                         break;
16132                 }
16133                 switch (hw->bus.width) {
16134                 case i40e_bus_width_pcie_x8:
16135                         strscpy(width, "8", PCI_WIDTH_SIZE); break;
16136                 case i40e_bus_width_pcie_x4:
16137                         strscpy(width, "4", PCI_WIDTH_SIZE); break;
16138                 case i40e_bus_width_pcie_x2:
16139                         strscpy(width, "2", PCI_WIDTH_SIZE); break;
16140                 case i40e_bus_width_pcie_x1:
16141                         strscpy(width, "1", PCI_WIDTH_SIZE); break;
16142                 default:
16143                         break;
16144                 }
16145
16146                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
16147                          speed, width);
16148
16149                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
16150                     hw->bus.speed < i40e_bus_speed_8000) {
16151                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
16152                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
16153                 }
16154         }
16155
16156         /* get the requested speeds from the fw */
16157         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
16158         if (err)
16159                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
16160                         i40e_stat_str(&pf->hw, err),
16161                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
16162         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
16163
16164         /* set the FEC config due to the board capabilities */
16165         i40e_set_fec_in_flags(abilities.fec_cfg_curr_mod_ext_info, &pf->flags);
16166
16167         /* get the supported phy types from the fw */
16168         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
16169         if (err)
16170                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
16171                         i40e_stat_str(&pf->hw, err),
16172                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
16173
16174         /* make sure the MFS hasn't been set lower than the default */
16175 #define MAX_FRAME_SIZE_DEFAULT 0x2600
16176         val = (rd32(&pf->hw, I40E_PRTGL_SAH) &
16177                I40E_PRTGL_SAH_MFS_MASK) >> I40E_PRTGL_SAH_MFS_SHIFT;
16178         if (val < MAX_FRAME_SIZE_DEFAULT)
16179                 dev_warn(&pdev->dev, "MFS for port %x has been set below the default: %x\n",
16180                          i, val);
16181
16182         /* Add a filter to drop all Flow control frames from any VSI from being
16183          * transmitted. By doing so we stop a malicious VF from sending out
16184          * PAUSE or PFC frames and potentially controlling traffic for other
16185          * PF/VF VSIs.
16186          * The FW can still send Flow control frames if enabled.
16187          */
16188         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
16189                                                        pf->main_vsi_seid);
16190
16191         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
16192                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
16193                 pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
16194         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
16195                 pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
16196         /* print a string summarizing features */
16197         i40e_print_features(pf);
16198
16199         return 0;
16200
16201         /* Unwind what we've done if something failed in the setup */
16202 err_vsis:
16203         set_bit(__I40E_DOWN, pf->state);
16204         i40e_clear_interrupt_scheme(pf);
16205         kfree(pf->vsi);
16206 err_switch_setup:
16207         i40e_reset_interrupt_capability(pf);
16208         timer_shutdown_sync(&pf->service_timer);
16209 err_mac_addr:
16210 err_configure_lan_hmc:
16211         (void)i40e_shutdown_lan_hmc(hw);
16212 err_init_lan_hmc:
16213         kfree(pf->qp_pile);
16214 err_sw_init:
16215 err_adminq_setup:
16216 err_pf_reset:
16217         iounmap(hw->hw_addr);
16218 err_ioremap:
16219         kfree(pf);
16220 err_pf_alloc:
16221         pci_disable_pcie_error_reporting(pdev);
16222         pci_release_mem_regions(pdev);
16223 err_pci_reg:
16224 err_dma:
16225         pci_disable_device(pdev);
16226         return err;
16227 }
16228
16229 /**
16230  * i40e_remove - Device removal routine
16231  * @pdev: PCI device information struct
16232  *
16233  * i40e_remove is called by the PCI subsystem to alert the driver
16234  * that is should release a PCI device.  This could be caused by a
16235  * Hot-Plug event, or because the driver is going to be removed from
16236  * memory.
16237  **/
16238 static void i40e_remove(struct pci_dev *pdev)
16239 {
16240         struct i40e_pf *pf = pci_get_drvdata(pdev);
16241         struct i40e_hw *hw = &pf->hw;
16242         i40e_status ret_code;
16243         int i;
16244
16245         i40e_dbg_pf_exit(pf);
16246
16247         i40e_ptp_stop(pf);
16248
16249         /* Disable RSS in hw */
16250         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
16251         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
16252
16253         /* Grab __I40E_RESET_RECOVERY_PENDING and set __I40E_IN_REMOVE
16254          * flags, once they are set, i40e_rebuild should not be called as
16255          * i40e_prep_for_reset always returns early.
16256          */
16257         while (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
16258                 usleep_range(1000, 2000);
16259         set_bit(__I40E_IN_REMOVE, pf->state);
16260
16261         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
16262                 set_bit(__I40E_VF_RESETS_DISABLED, pf->state);
16263                 i40e_free_vfs(pf);
16264                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
16265         }
16266         /* no more scheduling of any task */
16267         set_bit(__I40E_SUSPENDED, pf->state);
16268         set_bit(__I40E_DOWN, pf->state);
16269         if (pf->service_timer.function)
16270                 timer_shutdown_sync(&pf->service_timer);
16271         if (pf->service_task.func)
16272                 cancel_work_sync(&pf->service_task);
16273
16274         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
16275                 struct i40e_vsi *vsi = pf->vsi[0];
16276
16277                 /* We know that we have allocated only one vsi for this PF,
16278                  * it was just for registering netdevice, so the interface
16279                  * could be visible in the 'ifconfig' output
16280                  */
16281                 unregister_netdev(vsi->netdev);
16282                 free_netdev(vsi->netdev);
16283
16284                 goto unmap;
16285         }
16286
16287         /* Client close must be called explicitly here because the timer
16288          * has been stopped.
16289          */
16290         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
16291
16292         i40e_fdir_teardown(pf);
16293
16294         /* If there is a switch structure or any orphans, remove them.
16295          * This will leave only the PF's VSI remaining.
16296          */
16297         for (i = 0; i < I40E_MAX_VEB; i++) {
16298                 if (!pf->veb[i])
16299                         continue;
16300
16301                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
16302                     pf->veb[i]->uplink_seid == 0)
16303                         i40e_switch_branch_release(pf->veb[i]);
16304         }
16305
16306         /* Now we can shutdown the PF's VSI, just before we kill
16307          * adminq and hmc.
16308          */
16309         if (pf->vsi[pf->lan_vsi])
16310                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
16311
16312         i40e_cloud_filter_exit(pf);
16313
16314         /* remove attached clients */
16315         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
16316                 ret_code = i40e_lan_del_device(pf);
16317                 if (ret_code)
16318                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
16319                                  ret_code);
16320         }
16321
16322         /* shutdown and destroy the HMC */
16323         if (hw->hmc.hmc_obj) {
16324                 ret_code = i40e_shutdown_lan_hmc(hw);
16325                 if (ret_code)
16326                         dev_warn(&pdev->dev,
16327                                  "Failed to destroy the HMC resources: %d\n",
16328                                  ret_code);
16329         }
16330
16331 unmap:
16332         /* Free MSI/legacy interrupt 0 when in recovery mode. */
16333         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
16334             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
16335                 free_irq(pf->pdev->irq, pf);
16336
16337         /* shutdown the adminq */
16338         i40e_shutdown_adminq(hw);
16339
16340         /* destroy the locks only once, here */
16341         mutex_destroy(&hw->aq.arq_mutex);
16342         mutex_destroy(&hw->aq.asq_mutex);
16343
16344         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
16345         rtnl_lock();
16346         i40e_clear_interrupt_scheme(pf);
16347         for (i = 0; i < pf->num_alloc_vsi; i++) {
16348                 if (pf->vsi[i]) {
16349                         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
16350                                 i40e_vsi_clear_rings(pf->vsi[i]);
16351                         i40e_vsi_clear(pf->vsi[i]);
16352                         pf->vsi[i] = NULL;
16353                 }
16354         }
16355         rtnl_unlock();
16356
16357         for (i = 0; i < I40E_MAX_VEB; i++) {
16358                 kfree(pf->veb[i]);
16359                 pf->veb[i] = NULL;
16360         }
16361
16362         kfree(pf->qp_pile);
16363         kfree(pf->vsi);
16364
16365         iounmap(hw->hw_addr);
16366         kfree(pf);
16367         pci_release_mem_regions(pdev);
16368
16369         pci_disable_pcie_error_reporting(pdev);
16370         pci_disable_device(pdev);
16371 }
16372
16373 /**
16374  * i40e_pci_error_detected - warning that something funky happened in PCI land
16375  * @pdev: PCI device information struct
16376  * @error: the type of PCI error
16377  *
16378  * Called to warn that something happened and the error handling steps
16379  * are in progress.  Allows the driver to quiesce things, be ready for
16380  * remediation.
16381  **/
16382 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
16383                                                 pci_channel_state_t error)
16384 {
16385         struct i40e_pf *pf = pci_get_drvdata(pdev);
16386
16387         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
16388
16389         if (!pf) {
16390                 dev_info(&pdev->dev,
16391                          "Cannot recover - error happened during device probe\n");
16392                 return PCI_ERS_RESULT_DISCONNECT;
16393         }
16394
16395         /* shutdown all operations */
16396         if (!test_bit(__I40E_SUSPENDED, pf->state))
16397                 i40e_prep_for_reset(pf);
16398
16399         /* Request a slot reset */
16400         return PCI_ERS_RESULT_NEED_RESET;
16401 }
16402
16403 /**
16404  * i40e_pci_error_slot_reset - a PCI slot reset just happened
16405  * @pdev: PCI device information struct
16406  *
16407  * Called to find if the driver can work with the device now that
16408  * the pci slot has been reset.  If a basic connection seems good
16409  * (registers are readable and have sane content) then return a
16410  * happy little PCI_ERS_RESULT_xxx.
16411  **/
16412 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
16413 {
16414         struct i40e_pf *pf = pci_get_drvdata(pdev);
16415         pci_ers_result_t result;
16416         u32 reg;
16417
16418         dev_dbg(&pdev->dev, "%s\n", __func__);
16419         if (pci_enable_device_mem(pdev)) {
16420                 dev_info(&pdev->dev,
16421                          "Cannot re-enable PCI device after reset.\n");
16422                 result = PCI_ERS_RESULT_DISCONNECT;
16423         } else {
16424                 pci_set_master(pdev);
16425                 pci_restore_state(pdev);
16426                 pci_save_state(pdev);
16427                 pci_wake_from_d3(pdev, false);
16428
16429                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
16430                 if (reg == 0)
16431                         result = PCI_ERS_RESULT_RECOVERED;
16432                 else
16433                         result = PCI_ERS_RESULT_DISCONNECT;
16434         }
16435
16436         return result;
16437 }
16438
16439 /**
16440  * i40e_pci_error_reset_prepare - prepare device driver for pci reset
16441  * @pdev: PCI device information struct
16442  */
16443 static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
16444 {
16445         struct i40e_pf *pf = pci_get_drvdata(pdev);
16446
16447         i40e_prep_for_reset(pf);
16448 }
16449
16450 /**
16451  * i40e_pci_error_reset_done - pci reset done, device driver reset can begin
16452  * @pdev: PCI device information struct
16453  */
16454 static void i40e_pci_error_reset_done(struct pci_dev *pdev)
16455 {
16456         struct i40e_pf *pf = pci_get_drvdata(pdev);
16457
16458         if (test_bit(__I40E_IN_REMOVE, pf->state))
16459                 return;
16460
16461         i40e_reset_and_rebuild(pf, false, false);
16462 }
16463
16464 /**
16465  * i40e_pci_error_resume - restart operations after PCI error recovery
16466  * @pdev: PCI device information struct
16467  *
16468  * Called to allow the driver to bring things back up after PCI error
16469  * and/or reset recovery has finished.
16470  **/
16471 static void i40e_pci_error_resume(struct pci_dev *pdev)
16472 {
16473         struct i40e_pf *pf = pci_get_drvdata(pdev);
16474
16475         dev_dbg(&pdev->dev, "%s\n", __func__);
16476         if (test_bit(__I40E_SUSPENDED, pf->state))
16477                 return;
16478
16479         i40e_handle_reset_warning(pf, false);
16480 }
16481
16482 /**
16483  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
16484  * using the mac_address_write admin q function
16485  * @pf: pointer to i40e_pf struct
16486  **/
16487 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
16488 {
16489         struct i40e_hw *hw = &pf->hw;
16490         i40e_status ret;
16491         u8 mac_addr[6];
16492         u16 flags = 0;
16493
16494         /* Get current MAC address in case it's an LAA */
16495         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
16496                 ether_addr_copy(mac_addr,
16497                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
16498         } else {
16499                 dev_err(&pf->pdev->dev,
16500                         "Failed to retrieve MAC address; using default\n");
16501                 ether_addr_copy(mac_addr, hw->mac.addr);
16502         }
16503
16504         /* The FW expects the mac address write cmd to first be called with
16505          * one of these flags before calling it again with the multicast
16506          * enable flags.
16507          */
16508         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
16509
16510         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
16511                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
16512
16513         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
16514         if (ret) {
16515                 dev_err(&pf->pdev->dev,
16516                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
16517                 return;
16518         }
16519
16520         flags = I40E_AQC_MC_MAG_EN
16521                         | I40E_AQC_WOL_PRESERVE_ON_PFR
16522                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
16523         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
16524         if (ret)
16525                 dev_err(&pf->pdev->dev,
16526                         "Failed to enable Multicast Magic Packet wake up\n");
16527 }
16528
16529 /**
16530  * i40e_shutdown - PCI callback for shutting down
16531  * @pdev: PCI device information struct
16532  **/
16533 static void i40e_shutdown(struct pci_dev *pdev)
16534 {
16535         struct i40e_pf *pf = pci_get_drvdata(pdev);
16536         struct i40e_hw *hw = &pf->hw;
16537
16538         set_bit(__I40E_SUSPENDED, pf->state);
16539         set_bit(__I40E_DOWN, pf->state);
16540
16541         del_timer_sync(&pf->service_timer);
16542         cancel_work_sync(&pf->service_task);
16543         i40e_cloud_filter_exit(pf);
16544         i40e_fdir_teardown(pf);
16545
16546         /* Client close must be called explicitly here because the timer
16547          * has been stopped.
16548          */
16549         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
16550
16551         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
16552                 i40e_enable_mc_magic_wake(pf);
16553
16554         i40e_prep_for_reset(pf);
16555
16556         wr32(hw, I40E_PFPM_APM,
16557              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
16558         wr32(hw, I40E_PFPM_WUFC,
16559              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
16560
16561         /* Free MSI/legacy interrupt 0 when in recovery mode. */
16562         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
16563             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
16564                 free_irq(pf->pdev->irq, pf);
16565
16566         /* Since we're going to destroy queues during the
16567          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
16568          * whole section
16569          */
16570         rtnl_lock();
16571         i40e_clear_interrupt_scheme(pf);
16572         rtnl_unlock();
16573
16574         if (system_state == SYSTEM_POWER_OFF) {
16575                 pci_wake_from_d3(pdev, pf->wol_en);
16576                 pci_set_power_state(pdev, PCI_D3hot);
16577         }
16578 }
16579
16580 /**
16581  * i40e_suspend - PM callback for moving to D3
16582  * @dev: generic device information structure
16583  **/
16584 static int __maybe_unused i40e_suspend(struct device *dev)
16585 {
16586         struct i40e_pf *pf = dev_get_drvdata(dev);
16587         struct i40e_hw *hw = &pf->hw;
16588
16589         /* If we're already suspended, then there is nothing to do */
16590         if (test_and_set_bit(__I40E_SUSPENDED, pf->state))
16591                 return 0;
16592
16593         set_bit(__I40E_DOWN, pf->state);
16594
16595         /* Ensure service task will not be running */
16596         del_timer_sync(&pf->service_timer);
16597         cancel_work_sync(&pf->service_task);
16598
16599         /* Client close must be called explicitly here because the timer
16600          * has been stopped.
16601          */
16602         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
16603
16604         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
16605                 i40e_enable_mc_magic_wake(pf);
16606
16607         /* Since we're going to destroy queues during the
16608          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
16609          * whole section
16610          */
16611         rtnl_lock();
16612
16613         i40e_prep_for_reset(pf);
16614
16615         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
16616         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
16617
16618         /* Clear the interrupt scheme and release our IRQs so that the system
16619          * can safely hibernate even when there are a large number of CPUs.
16620          * Otherwise hibernation might fail when mapping all the vectors back
16621          * to CPU0.
16622          */
16623         i40e_clear_interrupt_scheme(pf);
16624
16625         rtnl_unlock();
16626
16627         return 0;
16628 }
16629
16630 /**
16631  * i40e_resume - PM callback for waking up from D3
16632  * @dev: generic device information structure
16633  **/
16634 static int __maybe_unused i40e_resume(struct device *dev)
16635 {
16636         struct i40e_pf *pf = dev_get_drvdata(dev);
16637         int err;
16638
16639         /* If we're not suspended, then there is nothing to do */
16640         if (!test_bit(__I40E_SUSPENDED, pf->state))
16641                 return 0;
16642
16643         /* We need to hold the RTNL lock prior to restoring interrupt schemes,
16644          * since we're going to be restoring queues
16645          */
16646         rtnl_lock();
16647
16648         /* We cleared the interrupt scheme when we suspended, so we need to
16649          * restore it now to resume device functionality.
16650          */
16651         err = i40e_restore_interrupt_scheme(pf);
16652         if (err) {
16653                 dev_err(dev, "Cannot restore interrupt scheme: %d\n",
16654                         err);
16655         }
16656
16657         clear_bit(__I40E_DOWN, pf->state);
16658         i40e_reset_and_rebuild(pf, false, true);
16659
16660         rtnl_unlock();
16661
16662         /* Clear suspended state last after everything is recovered */
16663         clear_bit(__I40E_SUSPENDED, pf->state);
16664
16665         /* Restart the service task */
16666         mod_timer(&pf->service_timer,
16667                   round_jiffies(jiffies + pf->service_timer_period));
16668
16669         return 0;
16670 }
16671
16672 static const struct pci_error_handlers i40e_err_handler = {
16673         .error_detected = i40e_pci_error_detected,
16674         .slot_reset = i40e_pci_error_slot_reset,
16675         .reset_prepare = i40e_pci_error_reset_prepare,
16676         .reset_done = i40e_pci_error_reset_done,
16677         .resume = i40e_pci_error_resume,
16678 };
16679
16680 static SIMPLE_DEV_PM_OPS(i40e_pm_ops, i40e_suspend, i40e_resume);
16681
16682 static struct pci_driver i40e_driver = {
16683         .name     = i40e_driver_name,
16684         .id_table = i40e_pci_tbl,
16685         .probe    = i40e_probe,
16686         .remove   = i40e_remove,
16687         .driver   = {
16688                 .pm = &i40e_pm_ops,
16689         },
16690         .shutdown = i40e_shutdown,
16691         .err_handler = &i40e_err_handler,
16692         .sriov_configure = i40e_pci_sriov_configure,
16693 };
16694
16695 /**
16696  * i40e_init_module - Driver registration routine
16697  *
16698  * i40e_init_module is the first routine called when the driver is
16699  * loaded. All it does is register with the PCI subsystem.
16700  **/
16701 static int __init i40e_init_module(void)
16702 {
16703         int err;
16704
16705         pr_info("%s: %s\n", i40e_driver_name, i40e_driver_string);
16706         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
16707
16708         /* There is no need to throttle the number of active tasks because
16709          * each device limits its own task using a state bit for scheduling
16710          * the service task, and the device tasks do not interfere with each
16711          * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
16712          * since we need to be able to guarantee forward progress even under
16713          * memory pressure.
16714          */
16715         i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
16716         if (!i40e_wq) {
16717                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
16718                 return -ENOMEM;
16719         }
16720
16721         i40e_dbg_init();
16722         err = pci_register_driver(&i40e_driver);
16723         if (err) {
16724                 destroy_workqueue(i40e_wq);
16725                 i40e_dbg_exit();
16726                 return err;
16727         }
16728
16729         return 0;
16730 }
16731 module_init(i40e_init_module);
16732
16733 /**
16734  * i40e_exit_module - Driver exit cleanup routine
16735  *
16736  * i40e_exit_module is called just before the driver is removed
16737  * from memory.
16738  **/
16739 static void __exit i40e_exit_module(void)
16740 {
16741         pci_unregister_driver(&i40e_driver);
16742         destroy_workqueue(i40e_wq);
16743         ida_destroy(&i40e_client_ida);
16744         i40e_dbg_exit();
16745 }
16746 module_exit(i40e_exit_module);