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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #if IS_ENABLED(CONFIG_VXLAN)
  35 #include <net/vxlan.h>
  36 #endif
  37 #if IS_ENABLED(CONFIG_GENEVE)
  38 #include <net/geneve.h>
  39 #endif
  40
  41 const char i40e_driver_name[] = "i40e";
  42 static const char i40e_driver_string[] =
  43                         "Intel(R) Ethernet Connection XL710 Network Driver";
  44
  45 #define DRV_KERN "-k"
  46
  47 #define DRV_VERSION_MAJOR 1
  48 #define DRV_VERSION_MINOR 4
  49 #define DRV_VERSION_BUILD 25
  50 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  51              __stringify(DRV_VERSION_MINOR) "." \
  52              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  53 const char i40e_driver_version_str[] = DRV_VERSION;
  54 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  55
  56 /* a bit of forward declarations */
  57 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  58 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  59 static int i40e_add_vsi(struct i40e_vsi *vsi);
  60 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  61 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  62 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  63 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  64 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  65 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  66                               u16 rss_table_size, u16 rss_size);
  67 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  68 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  69
  70 /* i40e_pci_tbl - PCI Device ID Table
  71  *
  72  * Last entry must be all 0s
  73  *
  74  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  75  *   Class, Class Mask, private data (not used) }
  76  */
  77 static const struct pci_device_id i40e_pci_tbl[] = {
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  92         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  93         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  94         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  95         /* required last entry */
  96         {0, }
  97 };
  98 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  99
 100 #define I40E_MAX_VF_COUNT 128
 101 static int debug = -1;
 102 module_param(debug, int, 0);
 103 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 104
 105 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 106 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 107 MODULE_LICENSE("GPL");
 108 MODULE_VERSION(DRV_VERSION);
 109
 110 static struct workqueue_struct *i40e_wq;
 111
 112 /**
 113  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 114  * @hw:   pointer to the HW structure
 115  * @mem:  ptr to mem struct to fill out
 116  * @size: size of memory requested
 117  * @alignment: what to align the allocation to
 118  **/
 119 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 120                             u64 size, u32 alignment)
 121 {
 122         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 123
 124         mem->size = ALIGN(size, alignment);
 125         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 126                                       &mem->pa, GFP_KERNEL);
 127         if (!mem->va)
 128                 return -ENOMEM;
 129
 130         return 0;
 131 }
 132
 133 /**
 134  * i40e_free_dma_mem_d - OS specific memory free for shared code
 135  * @hw:   pointer to the HW structure
 136  * @mem:  ptr to mem struct to free
 137  **/
 138 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 139 {
 140         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 141
 142         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 143         mem->va = NULL;
 144         mem->pa = 0;
 145         mem->size = 0;
 146
 147         return 0;
 148 }
 149
 150 /**
 151  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 152  * @hw:   pointer to the HW structure
 153  * @mem:  ptr to mem struct to fill out
 154  * @size: size of memory requested
 155  **/
 156 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 157                              u32 size)
 158 {
 159         mem->size = size;
 160         mem->va = kzalloc(size, GFP_KERNEL);
 161
 162         if (!mem->va)
 163                 return -ENOMEM;
 164
 165         return 0;
 166 }
 167
 168 /**
 169  * i40e_free_virt_mem_d - OS specific memory free for shared code
 170  * @hw:   pointer to the HW structure
 171  * @mem:  ptr to mem struct to free
 172  **/
 173 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 174 {
 175         /* it's ok to kfree a NULL pointer */
 176         kfree(mem->va);
 177         mem->va = NULL;
 178         mem->size = 0;
 179
 180         return 0;
 181 }
 182
 183 /**
 184  * i40e_get_lump - find a lump of free generic resource
 185  * @pf: board private structure
 186  * @pile: the pile of resource to search
 187  * @needed: the number of items needed
 188  * @id: an owner id to stick on the items assigned
 189  *
 190  * Returns the base item index of the lump, or negative for error
 191  *
 192  * The search_hint trick and lack of advanced fit-finding only work
 193  * because we're highly likely to have all the same size lump requests.
 194  * Linear search time and any fragmentation should be minimal.
 195  **/
 196 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 197                          u16 needed, u16 id)
 198 {
 199         int ret = -ENOMEM;
 200         int i, j;
 201
 202         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 203                 dev_info(&pf->pdev->dev,
 204                          "param err: pile=%p needed=%d id=0x%04x\n",
 205                          pile, needed, id);
 206                 return -EINVAL;
 207         }
 208
 209         /* start the linear search with an imperfect hint */
 210         i = pile->search_hint;
 211         while (i < pile->num_entries) {
 212                 /* skip already allocated entries */
 213                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 214                         i++;
 215                         continue;
 216                 }
 217
 218                 /* do we have enough in this lump? */
 219                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 220                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 221                                 break;
 222                 }
 223
 224                 if (j == needed) {
 225                         /* there was enough, so assign it to the requestor */
 226                         for (j = 0; j < needed; j++)
 227                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 228                         ret = i;
 229                         pile->search_hint = i + j;
 230                         break;
 231                 }
 232
 233                 /* not enough, so skip over it and continue looking */
 234                 i += j;
 235         }
 236
 237         return ret;
 238 }
 239
 240 /**
 241  * i40e_put_lump - return a lump of generic resource
 242  * @pile: the pile of resource to search
 243  * @index: the base item index
 244  * @id: the owner id of the items assigned
 245  *
 246  * Returns the count of items in the lump
 247  **/
 248 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 249 {
 250         int valid_id = (id | I40E_PILE_VALID_BIT);
 251         int count = 0;
 252         int i;
 253
 254         if (!pile || index >= pile->num_entries)
 255                 return -EINVAL;
 256
 257         for (i = index;
 258              i < pile->num_entries && pile->list[i] == valid_id;
 259              i++) {
 260                 pile->list[i] = 0;
 261                 count++;
 262         }
 263
 264         if (count && index < pile->search_hint)
 265                 pile->search_hint = index;
 266
 267         return count;
 268 }
 269
 270 /**
 271  * i40e_find_vsi_from_id - searches for the vsi with the given id
 272  * @pf - the pf structure to search for the vsi
 273  * @id - id of the vsi it is searching for
 274  **/
 275 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 276 {
 277         int i;
 278
 279         for (i = 0; i < pf->num_alloc_vsi; i++)
 280                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 281                         return pf->vsi[i];
 282
 283         return NULL;
 284 }
 285
 286 /**
 287  * i40e_service_event_schedule - Schedule the service task to wake up
 288  * @pf: board private structure
 289  *
 290  * If not already scheduled, this puts the task into the work queue
 291  **/
 292 void i40e_service_event_schedule(struct i40e_pf *pf)
 293 {
 294         if (!test_bit(__I40E_DOWN, &pf->state) &&
 295             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 296             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 297                 queue_work(i40e_wq, &pf->service_task);
 298 }
 299
 300 /**
 301  * i40e_tx_timeout - Respond to a Tx Hang
 302  * @netdev: network interface device structure
 303  *
 304  * If any port has noticed a Tx timeout, it is likely that the whole
 305  * device is munged, not just the one netdev port, so go for the full
 306  * reset.
 307  **/
 308 #ifdef I40E_FCOE
 309 void i40e_tx_timeout(struct net_device *netdev)
 310 #else
 311 static void i40e_tx_timeout(struct net_device *netdev)
 312 #endif
 313 {
 314         struct i40e_netdev_priv *np = netdev_priv(netdev);
 315         struct i40e_vsi *vsi = np->vsi;
 316         struct i40e_pf *pf = vsi->back;
 317         struct i40e_ring *tx_ring = NULL;
 318         unsigned int i, hung_queue = 0;
 319         u32 head, val;
 320
 321         pf->tx_timeout_count++;
 322
 323         /* find the stopped queue the same way the stack does */
 324         for (i = 0; i < netdev->num_tx_queues; i++) {
 325                 struct netdev_queue *q;
 326                 unsigned long trans_start;
 327
 328                 q = netdev_get_tx_queue(netdev, i);
 329                 trans_start = q->trans_start ? : netdev->trans_start;
 330                 if (netif_xmit_stopped(q) &&
 331                     time_after(jiffies,
 332                                (trans_start + netdev->watchdog_timeo))) {
 333                         hung_queue = i;
 334                         break;
 335                 }
 336         }
 337
 338         if (i == netdev->num_tx_queues) {
 339                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 340         } else {
 341                 /* now that we have an index, find the tx_ring struct */
 342                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 343                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 344                                 if (hung_queue ==
 345                                     vsi->tx_rings[i]->queue_index) {
 346                                         tx_ring = vsi->tx_rings[i];
 347                                         break;
 348                                 }
 349                         }
 350                 }
 351         }
 352
 353         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 354                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 355         else if (time_before(jiffies,
 356                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 357                 return;   /* don't do any new action before the next timeout */
 358
 359         if (tx_ring) {
 360                 head = i40e_get_head(tx_ring);
 361                 /* Read interrupt register */
 362                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 363                         val = rd32(&pf->hw,
 364                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 365                                                 tx_ring->vsi->base_vector - 1));
 366                 else
 367                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 368
 369                 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",
 370                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 371                             head, tx_ring->next_to_use,
 372                             readl(tx_ring->tail), val);
 373         }
 374
 375         pf->tx_timeout_last_recovery = jiffies;
 376         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 377                     pf->tx_timeout_recovery_level, hung_queue);
 378
 379         switch (pf->tx_timeout_recovery_level) {
 380         case 1:
 381                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 382                 break;
 383         case 2:
 384                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 385                 break;
 386         case 3:
 387                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 388                 break;
 389         default:
 390                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 391                 break;
 392         }
 393
 394         i40e_service_event_schedule(pf);
 395         pf->tx_timeout_recovery_level++;
 396 }
 397
 398 /**
 399  * i40e_release_rx_desc - Store the new tail and head values
 400  * @rx_ring: ring to bump
 401  * @val: new head index
 402  **/
 403 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 404 {
 405         rx_ring->next_to_use = val;
 406
 407         /* Force memory writes to complete before letting h/w
 408          * know there are new descriptors to fetch.  (Only
 409          * applicable for weak-ordered memory model archs,
 410          * such as IA-64).
 411          */
 412         wmb();
 413         writel(val, rx_ring->tail);
 414 }
 415
 416 /**
 417  * i40e_get_vsi_stats_struct - Get System Network Statistics
 418  * @vsi: the VSI we care about
 419  *
 420  * Returns the address of the device statistics structure.
 421  * The statistics are actually updated from the service task.
 422  **/
 423 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 424 {
 425         return &vsi->net_stats;
 426 }
 427
 428 /**
 429  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 430  * @netdev: network interface device structure
 431  *
 432  * Returns the address of the device statistics structure.
 433  * The statistics are actually updated from the service task.
 434  **/
 435 #ifdef I40E_FCOE
 436 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 437                                              struct net_device *netdev,
 438                                              struct rtnl_link_stats64 *stats)
 439 #else
 440 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 441                                              struct net_device *netdev,
 442                                              struct rtnl_link_stats64 *stats)
 443 #endif
 444 {
 445         struct i40e_netdev_priv *np = netdev_priv(netdev);
 446         struct i40e_ring *tx_ring, *rx_ring;
 447         struct i40e_vsi *vsi = np->vsi;
 448         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 449         int i;
 450
 451         if (test_bit(__I40E_DOWN, &vsi->state))
 452                 return stats;
 453
 454         if (!vsi->tx_rings)
 455                 return stats;
 456
 457         rcu_read_lock();
 458         for (i = 0; i < vsi->num_queue_pairs; i++) {
 459                 u64 bytes, packets;
 460                 unsigned int start;
 461
 462                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 463                 if (!tx_ring)
 464                         continue;
 465
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 468                         packets = tx_ring->stats.packets;
 469                         bytes   = tx_ring->stats.bytes;
 470                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 471
 472                 stats->tx_packets += packets;
 473                 stats->tx_bytes   += bytes;
 474                 rx_ring = &tx_ring[1];
 475
 476                 do {
 477                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 478                         packets = rx_ring->stats.packets;
 479                         bytes   = rx_ring->stats.bytes;
 480                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 481
 482                 stats->rx_packets += packets;
 483                 stats->rx_bytes   += bytes;
 484         }
 485         rcu_read_unlock();
 486
 487         /* following stats updated by i40e_watchdog_subtask() */
 488         stats->multicast        = vsi_stats->multicast;
 489         stats->tx_errors        = vsi_stats->tx_errors;
 490         stats->tx_dropped       = vsi_stats->tx_dropped;
 491         stats->rx_errors        = vsi_stats->rx_errors;
 492         stats->rx_dropped       = vsi_stats->rx_dropped;
 493         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 494         stats->rx_length_errors = vsi_stats->rx_length_errors;
 495
 496         return stats;
 497 }
 498
 499 /**
 500  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 501  * @vsi: the VSI to have its stats reset
 502  **/
 503 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 504 {
 505         struct rtnl_link_stats64 *ns;
 506         int i;
 507
 508         if (!vsi)
 509                 return;
 510
 511         ns = i40e_get_vsi_stats_struct(vsi);
 512         memset(ns, 0, sizeof(*ns));
 513         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 514         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 515         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 516         if (vsi->rx_rings && vsi->rx_rings[0]) {
 517                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 518                         memset(&vsi->rx_rings[i]->stats, 0,
 519                                sizeof(vsi->rx_rings[i]->stats));
 520                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 521                                sizeof(vsi->rx_rings[i]->rx_stats));
 522                         memset(&vsi->tx_rings[i]->stats, 0,
 523                                sizeof(vsi->tx_rings[i]->stats));
 524                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 525                                sizeof(vsi->tx_rings[i]->tx_stats));
 526                 }
 527         }
 528         vsi->stat_offsets_loaded = false;
 529 }
 530
 531 /**
 532  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 533  * @pf: the PF to be reset
 534  **/
 535 void i40e_pf_reset_stats(struct i40e_pf *pf)
 536 {
 537         int i;
 538
 539         memset(&pf->stats, 0, sizeof(pf->stats));
 540         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 541         pf->stat_offsets_loaded = false;
 542
 543         for (i = 0; i < I40E_MAX_VEB; i++) {
 544                 if (pf->veb[i]) {
 545                         memset(&pf->veb[i]->stats, 0,
 546                                sizeof(pf->veb[i]->stats));
 547                         memset(&pf->veb[i]->stats_offsets, 0,
 548                                sizeof(pf->veb[i]->stats_offsets));
 549                         pf->veb[i]->stat_offsets_loaded = false;
 550                 }
 551         }
 552 }
 553
 554 /**
 555  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 556  * @hw: ptr to the hardware info
 557  * @hireg: the high 32 bit reg to read
 558  * @loreg: the low 32 bit reg to read
 559  * @offset_loaded: has the initial offset been loaded yet
 560  * @offset: ptr to current offset value
 561  * @stat: ptr to the stat
 562  *
 563  * Since the device stats are not reset at PFReset, they likely will not
 564  * be zeroed when the driver starts.  We'll save the first values read
 565  * and use them as offsets to be subtracted from the raw values in order
 566  * to report stats that count from zero.  In the process, we also manage
 567  * the potential roll-over.
 568  **/
 569 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 570                                bool offset_loaded, u64 *offset, u64 *stat)
 571 {
 572         u64 new_data;
 573
 574         if (hw->device_id == I40E_DEV_ID_QEMU) {
 575                 new_data = rd32(hw, loreg);
 576                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 577         } else {
 578                 new_data = rd64(hw, loreg);
 579         }
 580         if (!offset_loaded)
 581                 *offset = new_data;
 582         if (likely(new_data >= *offset))
 583                 *stat = new_data - *offset;
 584         else
 585                 *stat = (new_data + BIT_ULL(48)) - *offset;
 586         *stat &= 0xFFFFFFFFFFFFULL;
 587 }
 588
 589 /**
 590  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 591  * @hw: ptr to the hardware info
 592  * @reg: the hw reg to read
 593  * @offset_loaded: has the initial offset been loaded yet
 594  * @offset: ptr to current offset value
 595  * @stat: ptr to the stat
 596  **/
 597 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 598                                bool offset_loaded, u64 *offset, u64 *stat)
 599 {
 600         u32 new_data;
 601
 602         new_data = rd32(hw, reg);
 603         if (!offset_loaded)
 604                 *offset = new_data;
 605         if (likely(new_data >= *offset))
 606                 *stat = (u32)(new_data - *offset);
 607         else
 608                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 609 }
 610
 611 /**
 612  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 613  * @vsi: the VSI to be updated
 614  **/
 615 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 616 {
 617         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 618         struct i40e_pf *pf = vsi->back;
 619         struct i40e_hw *hw = &pf->hw;
 620         struct i40e_eth_stats *oes;
 621         struct i40e_eth_stats *es;     /* device's eth stats */
 622
 623         es = &vsi->eth_stats;
 624         oes = &vsi->eth_stats_offsets;
 625
 626         /* Gather up the stats that the hw collects */
 627         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 628                            vsi->stat_offsets_loaded,
 629                            &oes->tx_errors, &es->tx_errors);
 630         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 631                            vsi->stat_offsets_loaded,
 632                            &oes->rx_discards, &es->rx_discards);
 633         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 636         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 637                            vsi->stat_offsets_loaded,
 638                            &oes->tx_errors, &es->tx_errors);
 639
 640         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 641                            I40E_GLV_GORCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->rx_bytes, &es->rx_bytes);
 644         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 645                            I40E_GLV_UPRCL(stat_idx),
 646                            vsi->stat_offsets_loaded,
 647                            &oes->rx_unicast, &es->rx_unicast);
 648         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 649                            I40E_GLV_MPRCL(stat_idx),
 650                            vsi->stat_offsets_loaded,
 651                            &oes->rx_multicast, &es->rx_multicast);
 652         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 653                            I40E_GLV_BPRCL(stat_idx),
 654                            vsi->stat_offsets_loaded,
 655                            &oes->rx_broadcast, &es->rx_broadcast);
 656
 657         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 658                            I40E_GLV_GOTCL(stat_idx),
 659                            vsi->stat_offsets_loaded,
 660                            &oes->tx_bytes, &es->tx_bytes);
 661         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 662                            I40E_GLV_UPTCL(stat_idx),
 663                            vsi->stat_offsets_loaded,
 664                            &oes->tx_unicast, &es->tx_unicast);
 665         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 666                            I40E_GLV_MPTCL(stat_idx),
 667                            vsi->stat_offsets_loaded,
 668                            &oes->tx_multicast, &es->tx_multicast);
 669         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 670                            I40E_GLV_BPTCL(stat_idx),
 671                            vsi->stat_offsets_loaded,
 672                            &oes->tx_broadcast, &es->tx_broadcast);
 673         vsi->stat_offsets_loaded = true;
 674 }
 675
 676 /**
 677  * i40e_update_veb_stats - Update Switch component statistics
 678  * @veb: the VEB being updated
 679  **/
 680 static void i40e_update_veb_stats(struct i40e_veb *veb)
 681 {
 682         struct i40e_pf *pf = veb->pf;
 683         struct i40e_hw *hw = &pf->hw;
 684         struct i40e_eth_stats *oes;
 685         struct i40e_eth_stats *es;     /* device's eth stats */
 686         struct i40e_veb_tc_stats *veb_oes;
 687         struct i40e_veb_tc_stats *veb_es;
 688         int i, idx = 0;
 689
 690         idx = veb->stats_idx;
 691         es = &veb->stats;
 692         oes = &veb->stats_offsets;
 693         veb_es = &veb->tc_stats;
 694         veb_oes = &veb->tc_stats_offsets;
 695
 696         /* Gather up the stats that the hw collects */
 697         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 698                            veb->stat_offsets_loaded,
 699                            &oes->tx_discards, &es->tx_discards);
 700         if (hw->revision_id > 0)
 701                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 702                                    veb->stat_offsets_loaded,
 703                                    &oes->rx_unknown_protocol,
 704                                    &es->rx_unknown_protocol);
 705         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->rx_bytes, &es->rx_bytes);
 708         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->rx_unicast, &es->rx_unicast);
 711         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->rx_multicast, &es->rx_multicast);
 714         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->rx_broadcast, &es->rx_broadcast);
 717
 718         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 719                            veb->stat_offsets_loaded,
 720                            &oes->tx_bytes, &es->tx_bytes);
 721         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 722                            veb->stat_offsets_loaded,
 723                            &oes->tx_unicast, &es->tx_unicast);
 724         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 725                            veb->stat_offsets_loaded,
 726                            &oes->tx_multicast, &es->tx_multicast);
 727         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 728                            veb->stat_offsets_loaded,
 729                            &oes->tx_broadcast, &es->tx_broadcast);
 730         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 732                                    I40E_GLVEBTC_RPCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_rx_packets[i],
 735                                    &veb_es->tc_rx_packets[i]);
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 737                                    I40E_GLVEBTC_RBCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_rx_bytes[i],
 740                                    &veb_es->tc_rx_bytes[i]);
 741                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 742                                    I40E_GLVEBTC_TPCL(i, idx),
 743                                    veb->stat_offsets_loaded,
 744                                    &veb_oes->tc_tx_packets[i],
 745                                    &veb_es->tc_tx_packets[i]);
 746                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 747                                    I40E_GLVEBTC_TBCL(i, idx),
 748                                    veb->stat_offsets_loaded,
 749                                    &veb_oes->tc_tx_bytes[i],
 750                                    &veb_es->tc_tx_bytes[i]);
 751         }
 752         veb->stat_offsets_loaded = true;
 753 }
 754
 755 #ifdef I40E_FCOE
 756 /**
 757  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 758  * @vsi: the VSI that is capable of doing FCoE
 759  **/
 760 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 761 {
 762         struct i40e_pf *pf = vsi->back;
 763         struct i40e_hw *hw = &pf->hw;
 764         struct i40e_fcoe_stats *ofs;
 765         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 766         int idx;
 767
 768         if (vsi->type != I40E_VSI_FCOE)
 769                 return;
 770
 771         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 772         fs = &vsi->fcoe_stats;
 773         ofs = &vsi->fcoe_stats_offsets;
 774
 775         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 778         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 779                            vsi->fcoe_stat_offsets_loaded,
 780                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 781         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 782                            vsi->fcoe_stat_offsets_loaded,
 783                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 784         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 785                            vsi->fcoe_stat_offsets_loaded,
 786                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 787         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 788                            vsi->fcoe_stat_offsets_loaded,
 789                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 790         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 791                            vsi->fcoe_stat_offsets_loaded,
 792                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 793         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 794                            vsi->fcoe_stat_offsets_loaded,
 795                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 796         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 797                            vsi->fcoe_stat_offsets_loaded,
 798                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 799
 800         vsi->fcoe_stat_offsets_loaded = true;
 801 }
 802
 803 #endif
 804 /**
 805  * i40e_update_vsi_stats - Update the vsi statistics counters.
 806  * @vsi: the VSI to be updated
 807  *
 808  * There are a few instances where we store the same stat in a
 809  * couple of different structs.  This is partly because we have
 810  * the netdev stats that need to be filled out, which is slightly
 811  * different from the "eth_stats" defined by the chip and used in
 812  * VF communications.  We sort it out here.
 813  **/
 814 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 815 {
 816         struct i40e_pf *pf = vsi->back;
 817         struct rtnl_link_stats64 *ons;
 818         struct rtnl_link_stats64 *ns;   /* netdev stats */
 819         struct i40e_eth_stats *oes;
 820         struct i40e_eth_stats *es;     /* device's eth stats */
 821         u32 tx_restart, tx_busy;
 822         u64 tx_lost_interrupt;
 823         struct i40e_ring *p;
 824         u32 rx_page, rx_buf;
 825         u64 bytes, packets;
 826         unsigned int start;
 827         u64 tx_linearize;
 828         u64 tx_force_wb;
 829         u64 rx_p, rx_b;
 830         u64 tx_p, tx_b;
 831         u16 q;
 832
 833         if (test_bit(__I40E_DOWN, &vsi->state) ||
 834             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 835                 return;
 836
 837         ns = i40e_get_vsi_stats_struct(vsi);
 838         ons = &vsi->net_stats_offsets;
 839         es = &vsi->eth_stats;
 840         oes = &vsi->eth_stats_offsets;
 841
 842         /* Gather up the netdev and vsi stats that the driver collects
 843          * on the fly during packet processing
 844          */
 845         rx_b = rx_p = 0;
 846         tx_b = tx_p = 0;
 847         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 848         tx_lost_interrupt = 0;
 849         rx_page = 0;
 850         rx_buf = 0;
 851         rcu_read_lock();
 852         for (q = 0; q < vsi->num_queue_pairs; q++) {
 853                 /* locate Tx ring */
 854                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 855
 856                 do {
 857                         start = u64_stats_fetch_begin_irq(&p->syncp);
 858                         packets = p->stats.packets;
 859                         bytes = p->stats.bytes;
 860                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 861                 tx_b += bytes;
 862                 tx_p += packets;
 863                 tx_restart += p->tx_stats.restart_queue;
 864                 tx_busy += p->tx_stats.tx_busy;
 865                 tx_linearize += p->tx_stats.tx_linearize;
 866                 tx_force_wb += p->tx_stats.tx_force_wb;
 867                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 868
 869                 /* Rx queue is part of the same block as Tx queue */
 870                 p = &p[1];
 871                 do {
 872                         start = u64_stats_fetch_begin_irq(&p->syncp);
 873                         packets = p->stats.packets;
 874                         bytes = p->stats.bytes;
 875                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 876                 rx_b += bytes;
 877                 rx_p += packets;
 878                 rx_buf += p->rx_stats.alloc_buff_failed;
 879                 rx_page += p->rx_stats.alloc_page_failed;
 880         }
 881         rcu_read_unlock();
 882         vsi->tx_restart = tx_restart;
 883         vsi->tx_busy = tx_busy;
 884         vsi->tx_linearize = tx_linearize;
 885         vsi->tx_force_wb = tx_force_wb;
 886         vsi->tx_lost_interrupt = tx_lost_interrupt;
 887         vsi->rx_page_failed = rx_page;
 888         vsi->rx_buf_failed = rx_buf;
 889
 890         ns->rx_packets = rx_p;
 891         ns->rx_bytes = rx_b;
 892         ns->tx_packets = tx_p;
 893         ns->tx_bytes = tx_b;
 894
 895         /* update netdev stats from eth stats */
 896         i40e_update_eth_stats(vsi);
 897         ons->tx_errors = oes->tx_errors;
 898         ns->tx_errors = es->tx_errors;
 899         ons->multicast = oes->rx_multicast;
 900         ns->multicast = es->rx_multicast;
 901         ons->rx_dropped = oes->rx_discards;
 902         ns->rx_dropped = es->rx_discards;
 903         ons->tx_dropped = oes->tx_discards;
 904         ns->tx_dropped = es->tx_discards;
 905
 906         /* pull in a couple PF stats if this is the main vsi */
 907         if (vsi == pf->vsi[pf->lan_vsi]) {
 908                 ns->rx_crc_errors = pf->stats.crc_errors;
 909                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 910                 ns->rx_length_errors = pf->stats.rx_length_errors;
 911         }
 912 }
 913
 914 /**
 915  * i40e_update_pf_stats - Update the PF statistics counters.
 916  * @pf: the PF to be updated
 917  **/
 918 static void i40e_update_pf_stats(struct i40e_pf *pf)
 919 {
 920         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 921         struct i40e_hw_port_stats *nsd = &pf->stats;
 922         struct i40e_hw *hw = &pf->hw;
 923         u32 val;
 924         int i;
 925
 926         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 927                            I40E_GLPRT_GORCL(hw->port),
 928                            pf->stat_offsets_loaded,
 929                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 930         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 931                            I40E_GLPRT_GOTCL(hw->port),
 932                            pf->stat_offsets_loaded,
 933                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 934         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 935                            pf->stat_offsets_loaded,
 936                            &osd->eth.rx_discards,
 937                            &nsd->eth.rx_discards);
 938         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 939                            I40E_GLPRT_UPRCL(hw->port),
 940                            pf->stat_offsets_loaded,
 941                            &osd->eth.rx_unicast,
 942                            &nsd->eth.rx_unicast);
 943         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 944                            I40E_GLPRT_MPRCL(hw->port),
 945                            pf->stat_offsets_loaded,
 946                            &osd->eth.rx_multicast,
 947                            &nsd->eth.rx_multicast);
 948         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 949                            I40E_GLPRT_BPRCL(hw->port),
 950                            pf->stat_offsets_loaded,
 951                            &osd->eth.rx_broadcast,
 952                            &nsd->eth.rx_broadcast);
 953         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 954                            I40E_GLPRT_UPTCL(hw->port),
 955                            pf->stat_offsets_loaded,
 956                            &osd->eth.tx_unicast,
 957                            &nsd->eth.tx_unicast);
 958         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 959                            I40E_GLPRT_MPTCL(hw->port),
 960                            pf->stat_offsets_loaded,
 961                            &osd->eth.tx_multicast,
 962                            &nsd->eth.tx_multicast);
 963         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 964                            I40E_GLPRT_BPTCL(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->eth.tx_broadcast,
 967                            &nsd->eth.tx_broadcast);
 968
 969         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 970                            pf->stat_offsets_loaded,
 971                            &osd->tx_dropped_link_down,
 972                            &nsd->tx_dropped_link_down);
 973
 974         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->crc_errors, &nsd->crc_errors);
 977
 978         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->illegal_bytes, &nsd->illegal_bytes);
 981
 982         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->mac_local_faults,
 985                            &nsd->mac_local_faults);
 986         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->mac_remote_faults,
 989                            &nsd->mac_remote_faults);
 990
 991         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->rx_length_errors,
 994                            &nsd->rx_length_errors);
 995
 996         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 997                            pf->stat_offsets_loaded,
 998                            &osd->link_xon_rx, &nsd->link_xon_rx);
 999         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->link_xon_tx, &nsd->link_xon_tx);
1002         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
1005         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1006                            pf->stat_offsets_loaded,
1007                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1008
1009         for (i = 0; i < 8; i++) {
1010                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
1011                                    pf->stat_offsets_loaded,
1012                                    &osd->priority_xoff_rx[i],
1013                                    &nsd->priority_xoff_rx[i]);
1014                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1015                                    pf->stat_offsets_loaded,
1016                                    &osd->priority_xon_rx[i],
1017                                    &nsd->priority_xon_rx[i]);
1018                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1019                                    pf->stat_offsets_loaded,
1020                                    &osd->priority_xon_tx[i],
1021                                    &nsd->priority_xon_tx[i]);
1022                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1023                                    pf->stat_offsets_loaded,
1024                                    &osd->priority_xoff_tx[i],
1025                                    &nsd->priority_xoff_tx[i]);
1026                 i40e_stat_update32(hw,
1027                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1028                                    pf->stat_offsets_loaded,
1029                                    &osd->priority_xon_2_xoff[i],
1030                                    &nsd->priority_xon_2_xoff[i]);
1031         }
1032
1033         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1034                            I40E_GLPRT_PRC64L(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->rx_size_64, &nsd->rx_size_64);
1037         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1038                            I40E_GLPRT_PRC127L(hw->port),
1039                            pf->stat_offsets_loaded,
1040                            &osd->rx_size_127, &nsd->rx_size_127);
1041         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1042                            I40E_GLPRT_PRC255L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->rx_size_255, &nsd->rx_size_255);
1045         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1046                            I40E_GLPRT_PRC511L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_size_511, &nsd->rx_size_511);
1049         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1050                            I40E_GLPRT_PRC1023L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->rx_size_1023, &nsd->rx_size_1023);
1053         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1054                            I40E_GLPRT_PRC1522L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->rx_size_1522, &nsd->rx_size_1522);
1057         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1058                            I40E_GLPRT_PRC9522L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->rx_size_big, &nsd->rx_size_big);
1061
1062         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1063                            I40E_GLPRT_PTC64L(hw->port),
1064                            pf->stat_offsets_loaded,
1065                            &osd->tx_size_64, &nsd->tx_size_64);
1066         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1067                            I40E_GLPRT_PTC127L(hw->port),
1068                            pf->stat_offsets_loaded,
1069                            &osd->tx_size_127, &nsd->tx_size_127);
1070         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1071                            I40E_GLPRT_PTC255L(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->tx_size_255, &nsd->tx_size_255);
1074         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1075                            I40E_GLPRT_PTC511L(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->tx_size_511, &nsd->tx_size_511);
1078         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1079                            I40E_GLPRT_PTC1023L(hw->port),
1080                            pf->stat_offsets_loaded,
1081                            &osd->tx_size_1023, &nsd->tx_size_1023);
1082         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1083                            I40E_GLPRT_PTC1522L(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->tx_size_1522, &nsd->tx_size_1522);
1086         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1087                            I40E_GLPRT_PTC9522L(hw->port),
1088                            pf->stat_offsets_loaded,
1089                            &osd->tx_size_big, &nsd->tx_size_big);
1090
1091         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1092                            pf->stat_offsets_loaded,
1093                            &osd->rx_undersize, &nsd->rx_undersize);
1094         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->rx_fragments, &nsd->rx_fragments);
1097         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1098                            pf->stat_offsets_loaded,
1099                            &osd->rx_oversize, &nsd->rx_oversize);
1100         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1101                            pf->stat_offsets_loaded,
1102                            &osd->rx_jabber, &nsd->rx_jabber);
1103
1104         /* FDIR stats */
1105         i40e_stat_update32(hw,
1106                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1107                            pf->stat_offsets_loaded,
1108                            &osd->fd_atr_match, &nsd->fd_atr_match);
1109         i40e_stat_update32(hw,
1110                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1111                            pf->stat_offsets_loaded,
1112                            &osd->fd_sb_match, &nsd->fd_sb_match);
1113         i40e_stat_update32(hw,
1114                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1115                       pf->stat_offsets_loaded,
1116                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1117
1118         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1119         nsd->tx_lpi_status =
1120                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1121                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1122         nsd->rx_lpi_status =
1123                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1124                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1125         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1126                            pf->stat_offsets_loaded,
1127                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1128         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1129                            pf->stat_offsets_loaded,
1130                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1131
1132         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1133             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1134                 nsd->fd_sb_status = true;
1135         else
1136                 nsd->fd_sb_status = false;
1137
1138         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1139             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1140                 nsd->fd_atr_status = true;
1141         else
1142                 nsd->fd_atr_status = false;
1143
1144         pf->stat_offsets_loaded = true;
1145 }
1146
1147 /**
1148  * i40e_update_stats - Update the various statistics counters.
1149  * @vsi: the VSI to be updated
1150  *
1151  * Update the various stats for this VSI and its related entities.
1152  **/
1153 void i40e_update_stats(struct i40e_vsi *vsi)
1154 {
1155         struct i40e_pf *pf = vsi->back;
1156
1157         if (vsi == pf->vsi[pf->lan_vsi])
1158                 i40e_update_pf_stats(pf);
1159
1160         i40e_update_vsi_stats(vsi);
1161 #ifdef I40E_FCOE
1162         i40e_update_fcoe_stats(vsi);
1163 #endif
1164 }
1165
1166 /**
1167  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1168  * @vsi: the VSI to be searched
1169  * @macaddr: the MAC address
1170  * @vlan: the vlan
1171  * @is_vf: make sure its a VF filter, else doesn't matter
1172  * @is_netdev: make sure its a netdev filter, else doesn't matter
1173  *
1174  * Returns ptr to the filter object or NULL
1175  **/
1176 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1177                                                 u8 *macaddr, s16 vlan,
1178                                                 bool is_vf, bool is_netdev)
1179 {
1180         struct i40e_mac_filter *f;
1181
1182         if (!vsi || !macaddr)
1183                 return NULL;
1184
1185         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1186                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1187                     (vlan == f->vlan)    &&
1188                     (!is_vf || f->is_vf) &&
1189                     (!is_netdev || f->is_netdev))
1190                         return f;
1191         }
1192         return NULL;
1193 }
1194
1195 /**
1196  * i40e_find_mac - Find a mac addr in the macvlan filters list
1197  * @vsi: the VSI to be searched
1198  * @macaddr: the MAC address we are searching for
1199  * @is_vf: make sure its a VF filter, else doesn't matter
1200  * @is_netdev: make sure its a netdev filter, else doesn't matter
1201  *
1202  * Returns the first filter with the provided MAC address or NULL if
1203  * MAC address was not found
1204  **/
1205 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1206                                       bool is_vf, bool is_netdev)
1207 {
1208         struct i40e_mac_filter *f;
1209
1210         if (!vsi || !macaddr)
1211                 return NULL;
1212
1213         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1214                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1215                     (!is_vf || f->is_vf) &&
1216                     (!is_netdev || f->is_netdev))
1217                         return f;
1218         }
1219         return NULL;
1220 }
1221
1222 /**
1223  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1224  * @vsi: the VSI to be searched
1225  *
1226  * Returns true if VSI is in vlan mode or false otherwise
1227  **/
1228 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1229 {
1230         struct i40e_mac_filter *f;
1231
1232         /* Only -1 for all the filters denotes not in vlan mode
1233          * so we have to go through all the list in order to make sure
1234          */
1235         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1236                 if (f->vlan >= 0 || vsi->info.pvid)
1237                         return true;
1238         }
1239
1240         return false;
1241 }
1242
1243 /**
1244  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1245  * @vsi: the VSI to be searched
1246  * @macaddr: the mac address to be filtered
1247  * @is_vf: true if it is a VF
1248  * @is_netdev: true if it is a netdev
1249  *
1250  * Goes through all the macvlan filters and adds a
1251  * macvlan filter for each unique vlan that already exists
1252  *
1253  * Returns first filter found on success, else NULL
1254  **/
1255 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1256                                              bool is_vf, bool is_netdev)
1257 {
1258         struct i40e_mac_filter *f;
1259
1260         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1261                 if (vsi->info.pvid)
1262                         f->vlan = le16_to_cpu(vsi->info.pvid);
1263                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1264                                       is_vf, is_netdev)) {
1265                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1266                                              is_vf, is_netdev))
1267                                 return NULL;
1268                 }
1269         }
1270
1271         return list_first_entry_or_null(&vsi->mac_filter_list,
1272                                         struct i40e_mac_filter, list);
1273 }
1274
1275 /**
1276  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1277  * @vsi: the VSI to be searched
1278  * @macaddr: the mac address to be removed
1279  * @is_vf: true if it is a VF
1280  * @is_netdev: true if it is a netdev
1281  *
1282  * Removes a given MAC address from a VSI, regardless of VLAN
1283  *
1284  * Returns 0 for success, or error
1285  **/
1286 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1287                           bool is_vf, bool is_netdev)
1288 {
1289         struct i40e_mac_filter *f = NULL;
1290         int changed = 0;
1291
1292         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1293              "Missing mac_filter_list_lock\n");
1294         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1295                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1296                     (is_vf == f->is_vf) &&
1297                     (is_netdev == f->is_netdev)) {
1298                         f->counter--;
1299                         f->changed = true;
1300                         changed = 1;
1301                 }
1302         }
1303         if (changed) {
1304                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1305                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1306                 return 0;
1307         }
1308         return -ENOENT;
1309 }
1310
1311 /**
1312  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1313  * @vsi: the PF Main VSI - inappropriate for any other VSI
1314  * @macaddr: the MAC address
1315  *
1316  * Some older firmware configurations set up a default promiscuous VLAN
1317  * filter that needs to be removed.
1318  **/
1319 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1320 {
1321         struct i40e_aqc_remove_macvlan_element_data element;
1322         struct i40e_pf *pf = vsi->back;
1323         i40e_status ret;
1324
1325         /* Only appropriate for the PF main VSI */
1326         if (vsi->type != I40E_VSI_MAIN)
1327                 return -EINVAL;
1328
1329         memset(&element, 0, sizeof(element));
1330         ether_addr_copy(element.mac_addr, macaddr);
1331         element.vlan_tag = 0;
1332         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1333                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1334         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1335         if (ret)
1336                 return -ENOENT;
1337
1338         return 0;
1339 }
1340
1341 /**
1342  * i40e_add_filter - Add a mac/vlan filter to the VSI
1343  * @vsi: the VSI to be searched
1344  * @macaddr: the MAC address
1345  * @vlan: the vlan
1346  * @is_vf: make sure its a VF filter, else doesn't matter
1347  * @is_netdev: make sure its a netdev filter, else doesn't matter
1348  *
1349  * Returns ptr to the filter object or NULL when no memory available.
1350  *
1351  * NOTE: This function is expected to be called with mac_filter_list_lock
1352  * being held.
1353  **/
1354 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1355                                         u8 *macaddr, s16 vlan,
1356                                         bool is_vf, bool is_netdev)
1357 {
1358         struct i40e_mac_filter *f;
1359
1360         if (!vsi || !macaddr)
1361                 return NULL;
1362
1363         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1364         if (!f) {
1365                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1366                 if (!f)
1367                         goto add_filter_out;
1368
1369                 ether_addr_copy(f->macaddr, macaddr);
1370                 f->vlan = vlan;
1371                 f->changed = true;
1372
1373                 INIT_LIST_HEAD(&f->list);
1374                 list_add_tail(&f->list, &vsi->mac_filter_list);
1375         }
1376
1377         /* increment counter and add a new flag if needed */
1378         if (is_vf) {
1379                 if (!f->is_vf) {
1380                         f->is_vf = true;
1381                         f->counter++;
1382                 }
1383         } else if (is_netdev) {
1384                 if (!f->is_netdev) {
1385                         f->is_netdev = true;
1386                         f->counter++;
1387                 }
1388         } else {
1389                 f->counter++;
1390         }
1391
1392         /* changed tells sync_filters_subtask to
1393          * push the filter down to the firmware
1394          */
1395         if (f->changed) {
1396                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1397                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1398         }
1399
1400 add_filter_out:
1401         return f;
1402 }
1403
1404 /**
1405  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1406  * @vsi: the VSI to be searched
1407  * @macaddr: the MAC address
1408  * @vlan: the vlan
1409  * @is_vf: make sure it's a VF filter, else doesn't matter
1410  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1411  *
1412  * NOTE: This function is expected to be called with mac_filter_list_lock
1413  * being held.
1414  **/
1415 void i40e_del_filter(struct i40e_vsi *vsi,
1416                      u8 *macaddr, s16 vlan,
1417                      bool is_vf, bool is_netdev)
1418 {
1419         struct i40e_mac_filter *f;
1420
1421         if (!vsi || !macaddr)
1422                 return;
1423
1424         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1425         if (!f || f->counter == 0)
1426                 return;
1427
1428         if (is_vf) {
1429                 if (f->is_vf) {
1430                         f->is_vf = false;
1431                         f->counter--;
1432                 }
1433         } else if (is_netdev) {
1434                 if (f->is_netdev) {
1435                         f->is_netdev = false;
1436                         f->counter--;
1437                 }
1438         } else {
1439                 /* make sure we don't remove a filter in use by VF or netdev */
1440                 int min_f = 0;
1441
1442                 min_f += (f->is_vf ? 1 : 0);
1443                 min_f += (f->is_netdev ? 1 : 0);
1444
1445                 if (f->counter > min_f)
1446                         f->counter--;
1447         }
1448
1449         /* counter == 0 tells sync_filters_subtask to
1450          * remove the filter from the firmware's list
1451          */
1452         if (f->counter == 0) {
1453                 f->changed = true;
1454                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1455                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1456         }
1457 }
1458
1459 /**
1460  * i40e_set_mac - NDO callback to set mac address
1461  * @netdev: network interface device structure
1462  * @p: pointer to an address structure
1463  *
1464  * Returns 0 on success, negative on failure
1465  **/
1466 #ifdef I40E_FCOE
1467 int i40e_set_mac(struct net_device *netdev, void *p)
1468 #else
1469 static int i40e_set_mac(struct net_device *netdev, void *p)
1470 #endif
1471 {
1472         struct i40e_netdev_priv *np = netdev_priv(netdev);
1473         struct i40e_vsi *vsi = np->vsi;
1474         struct i40e_pf *pf = vsi->back;
1475         struct i40e_hw *hw = &pf->hw;
1476         struct sockaddr *addr = p;
1477         struct i40e_mac_filter *f;
1478
1479         if (!is_valid_ether_addr(addr->sa_data))
1480                 return -EADDRNOTAVAIL;
1481
1482         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1483                 netdev_info(netdev, "already using mac address %pM\n",
1484                             addr->sa_data);
1485                 return 0;
1486         }
1487
1488         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1489             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1490                 return -EADDRNOTAVAIL;
1491
1492         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1493                 netdev_info(netdev, "returning to hw mac address %pM\n",
1494                             hw->mac.addr);
1495         else
1496                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1497
1498         if (vsi->type == I40E_VSI_MAIN) {
1499                 i40e_status ret;
1500
1501                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1502                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1503                                                 addr->sa_data, NULL);
1504                 if (ret) {
1505                         netdev_info(netdev,
1506                                     "Addr change for Main VSI failed: %d\n",
1507                                     ret);
1508                         return -EADDRNOTAVAIL;
1509                 }
1510         }
1511
1512         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1513                 struct i40e_aqc_remove_macvlan_element_data element;
1514
1515                 memset(&element, 0, sizeof(element));
1516                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1517                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1518                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1519         } else {
1520                 spin_lock_bh(&vsi->mac_filter_list_lock);
1521                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1522                                 false, false);
1523                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1524         }
1525
1526         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1527                 struct i40e_aqc_add_macvlan_element_data element;
1528
1529                 memset(&element, 0, sizeof(element));
1530                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1531                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1532                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1533         } else {
1534                 spin_lock_bh(&vsi->mac_filter_list_lock);
1535                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1536                                     false, false);
1537                 if (f)
1538                         f->is_laa = true;
1539                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1540         }
1541
1542         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1543
1544         /* schedule our worker thread which will take care of
1545          * applying the new filter changes
1546          */
1547         i40e_service_event_schedule(vsi->back);
1548         return 0;
1549 }
1550
1551 /**
1552  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1553  * @vsi: the VSI being setup
1554  * @ctxt: VSI context structure
1555  * @enabled_tc: Enabled TCs bitmap
1556  * @is_add: True if called before Add VSI
1557  *
1558  * Setup VSI queue mapping for enabled traffic classes.
1559  **/
1560 #ifdef I40E_FCOE
1561 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1562                               struct i40e_vsi_context *ctxt,
1563                               u8 enabled_tc,
1564                               bool is_add)
1565 #else
1566 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1567                                      struct i40e_vsi_context *ctxt,
1568                                      u8 enabled_tc,
1569                                      bool is_add)
1570 #endif
1571 {
1572         struct i40e_pf *pf = vsi->back;
1573         u16 sections = 0;
1574         u8 netdev_tc = 0;
1575         u16 numtc = 0;
1576         u16 qcount;
1577         u8 offset;
1578         u16 qmap;
1579         int i;
1580         u16 num_tc_qps = 0;
1581
1582         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1583         offset = 0;
1584
1585         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1586                 /* Find numtc from enabled TC bitmap */
1587                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1588                         if (enabled_tc & BIT(i)) /* TC is enabled */
1589                                 numtc++;
1590                 }
1591                 if (!numtc) {
1592                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1593                         numtc = 1;
1594                 }
1595         } else {
1596                 /* At least TC0 is enabled in case of non-DCB case */
1597                 numtc = 1;
1598         }
1599
1600         vsi->tc_config.numtc = numtc;
1601         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1602         /* Number of queues per enabled TC */
1603         /* In MFP case we can have a much lower count of MSIx
1604          * vectors available and so we need to lower the used
1605          * q count.
1606          */
1607         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1608                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1609         else
1610                 qcount = vsi->alloc_queue_pairs;
1611         num_tc_qps = qcount / numtc;
1612         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1613
1614         /* Setup queue offset/count for all TCs for given VSI */
1615         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1616                 /* See if the given TC is enabled for the given VSI */
1617                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1618                         /* TC is enabled */
1619                         int pow, num_qps;
1620
1621                         switch (vsi->type) {
1622                         case I40E_VSI_MAIN:
1623                                 qcount = min_t(int, pf->alloc_rss_size,
1624                                                num_tc_qps);
1625                                 break;
1626 #ifdef I40E_FCOE
1627                         case I40E_VSI_FCOE:
1628                                 qcount = num_tc_qps;
1629                                 break;
1630 #endif
1631                         case I40E_VSI_FDIR:
1632                         case I40E_VSI_SRIOV:
1633                         case I40E_VSI_VMDQ2:
1634                         default:
1635                                 qcount = num_tc_qps;
1636                                 WARN_ON(i != 0);
1637                                 break;
1638                         }
1639                         vsi->tc_config.tc_info[i].qoffset = offset;
1640                         vsi->tc_config.tc_info[i].qcount = qcount;
1641
1642                         /* find the next higher power-of-2 of num queue pairs */
1643                         num_qps = qcount;
1644                         pow = 0;
1645                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1646                                 pow++;
1647                                 num_qps >>= 1;
1648                         }
1649
1650                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1651                         qmap =
1652                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1653                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1654
1655                         offset += qcount;
1656                 } else {
1657                         /* TC is not enabled so set the offset to
1658                          * default queue and allocate one queue
1659                          * for the given TC.
1660                          */
1661                         vsi->tc_config.tc_info[i].qoffset = 0;
1662                         vsi->tc_config.tc_info[i].qcount = 1;
1663                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1664
1665                         qmap = 0;
1666                 }
1667                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1668         }
1669
1670         /* Set actual Tx/Rx queue pairs */
1671         vsi->num_queue_pairs = offset;
1672         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1673                 if (vsi->req_queue_pairs > 0)
1674                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1675                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1676                         vsi->num_queue_pairs = pf->num_lan_msix;
1677         }
1678
1679         /* Scheduler section valid can only be set for ADD VSI */
1680         if (is_add) {
1681                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1682
1683                 ctxt->info.up_enable_bits = enabled_tc;
1684         }
1685         if (vsi->type == I40E_VSI_SRIOV) {
1686                 ctxt->info.mapping_flags |=
1687                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1688                 for (i = 0; i < vsi->num_queue_pairs; i++)
1689                         ctxt->info.queue_mapping[i] =
1690                                                cpu_to_le16(vsi->base_queue + i);
1691         } else {
1692                 ctxt->info.mapping_flags |=
1693                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1694                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1695         }
1696         ctxt->info.valid_sections |= cpu_to_le16(sections);
1697 }
1698
1699 /**
1700  * i40e_set_rx_mode - NDO callback to set the netdev filters
1701  * @netdev: network interface device structure
1702  **/
1703 #ifdef I40E_FCOE
1704 void i40e_set_rx_mode(struct net_device *netdev)
1705 #else
1706 static void i40e_set_rx_mode(struct net_device *netdev)
1707 #endif
1708 {
1709         struct i40e_netdev_priv *np = netdev_priv(netdev);
1710         struct i40e_mac_filter *f, *ftmp;
1711         struct i40e_vsi *vsi = np->vsi;
1712         struct netdev_hw_addr *uca;
1713         struct netdev_hw_addr *mca;
1714         struct netdev_hw_addr *ha;
1715
1716         spin_lock_bh(&vsi->mac_filter_list_lock);
1717
1718         /* add addr if not already in the filter list */
1719         netdev_for_each_uc_addr(uca, netdev) {
1720                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1721                         if (i40e_is_vsi_in_vlan(vsi))
1722                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1723                                                      false, true);
1724                         else
1725                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1726                                                 false, true);
1727                 }
1728         }
1729
1730         netdev_for_each_mc_addr(mca, netdev) {
1731                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1732                         if (i40e_is_vsi_in_vlan(vsi))
1733                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1734                                                      false, true);
1735                         else
1736                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1737                                                 false, true);
1738                 }
1739         }
1740
1741         /* remove filter if not in netdev list */
1742         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1743
1744                 if (!f->is_netdev)
1745                         continue;
1746
1747                 netdev_for_each_mc_addr(mca, netdev)
1748                         if (ether_addr_equal(mca->addr, f->macaddr))
1749                                 goto bottom_of_search_loop;
1750
1751                 netdev_for_each_uc_addr(uca, netdev)
1752                         if (ether_addr_equal(uca->addr, f->macaddr))
1753                                 goto bottom_of_search_loop;
1754
1755                 for_each_dev_addr(netdev, ha)
1756                         if (ether_addr_equal(ha->addr, f->macaddr))
1757                                 goto bottom_of_search_loop;
1758
1759                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1760                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1761
1762 bottom_of_search_loop:
1763                 continue;
1764         }
1765         spin_unlock_bh(&vsi->mac_filter_list_lock);
1766
1767         /* check for other flag changes */
1768         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1769                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1770                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1771         }
1772
1773         /* schedule our worker thread which will take care of
1774          * applying the new filter changes
1775          */
1776         i40e_service_event_schedule(vsi->back);
1777 }
1778
1779 /**
1780  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1781  * @src: source MAC filter entry to be clones
1782  *
1783  * Returns the pointer to newly cloned MAC filter entry or NULL
1784  * in case of error
1785  **/
1786 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1787                                         struct i40e_mac_filter *src)
1788 {
1789         struct i40e_mac_filter *f;
1790
1791         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1792         if (!f)
1793                 return NULL;
1794         *f = *src;
1795
1796         INIT_LIST_HEAD(&f->list);
1797
1798         return f;
1799 }
1800
1801 /**
1802  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1803  * @vsi: pointer to vsi struct
1804  * @from: Pointer to list which contains MAC filter entries - changes to
1805  *        those entries needs to be undone.
1806  *
1807  * MAC filter entries from list were slated to be removed from device.
1808  **/
1809 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1810                                          struct list_head *from)
1811 {
1812         struct i40e_mac_filter *f, *ftmp;
1813
1814         list_for_each_entry_safe(f, ftmp, from, list) {
1815                 f->changed = true;
1816                 /* Move the element back into MAC filter list*/
1817                 list_move_tail(&f->list, &vsi->mac_filter_list);
1818         }
1819 }
1820
1821 /**
1822  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1823  * @vsi: pointer to vsi struct
1824  *
1825  * MAC filter entries from list were slated to be added from device.
1826  **/
1827 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1828 {
1829         struct i40e_mac_filter *f, *ftmp;
1830
1831         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1832                 if (!f->changed && f->counter)
1833                         f->changed = true;
1834         }
1835 }
1836
1837 /**
1838  * i40e_cleanup_add_list - Deletes the element from add list and release
1839  *                      memory
1840  * @add_list: Pointer to list which contains MAC filter entries
1841  **/
1842 static void i40e_cleanup_add_list(struct list_head *add_list)
1843 {
1844         struct i40e_mac_filter *f, *ftmp;
1845
1846         list_for_each_entry_safe(f, ftmp, add_list, list) {
1847                 list_del(&f->list);
1848                 kfree(f);
1849         }
1850 }
1851
1852 /**
1853  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1854  * @vsi: ptr to the VSI
1855  *
1856  * Push any outstanding VSI filter changes through the AdminQ.
1857  *
1858  * Returns 0 or error value
1859  **/
1860 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1861 {
1862         struct list_head tmp_del_list, tmp_add_list;
1863         struct i40e_mac_filter *f, *ftmp, *fclone;
1864         bool promisc_forced_on = false;
1865         bool add_happened = false;
1866         int filter_list_len = 0;
1867         u32 changed_flags = 0;
1868         i40e_status aq_ret = 0;
1869         bool err_cond = false;
1870         int retval = 0;
1871         struct i40e_pf *pf;
1872         int num_add = 0;
1873         int num_del = 0;
1874         int aq_err = 0;
1875         u16 cmd_flags;
1876
1877         /* empty array typed pointers, kcalloc later */
1878         struct i40e_aqc_add_macvlan_element_data *add_list;
1879         struct i40e_aqc_remove_macvlan_element_data *del_list;
1880
1881         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1882                 usleep_range(1000, 2000);
1883         pf = vsi->back;
1884
1885         if (vsi->netdev) {
1886                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1887                 vsi->current_netdev_flags = vsi->netdev->flags;
1888         }
1889
1890         INIT_LIST_HEAD(&tmp_del_list);
1891         INIT_LIST_HEAD(&tmp_add_list);
1892
1893         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1894                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1895
1896                 spin_lock_bh(&vsi->mac_filter_list_lock);
1897                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1898                         if (!f->changed)
1899                                 continue;
1900
1901                         if (f->counter != 0)
1902                                 continue;
1903                         f->changed = false;
1904
1905                         /* Move the element into temporary del_list */
1906                         list_move_tail(&f->list, &tmp_del_list);
1907                 }
1908
1909                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1910                         if (!f->changed)
1911                                 continue;
1912
1913                         if (f->counter == 0)
1914                                 continue;
1915                         f->changed = false;
1916
1917                         /* Clone MAC filter entry and add into temporary list */
1918                         fclone = i40e_mac_filter_entry_clone(f);
1919                         if (!fclone) {
1920                                 err_cond = true;
1921                                 break;
1922                         }
1923                         list_add_tail(&fclone->list, &tmp_add_list);
1924                 }
1925
1926                 /* if failed to clone MAC filter entry - undo */
1927                 if (err_cond) {
1928                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1929                         i40e_undo_add_filter_entries(vsi);
1930                 }
1931                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1932
1933                 if (err_cond) {
1934                         i40e_cleanup_add_list(&tmp_add_list);
1935                         retval = -ENOMEM;
1936                         goto out;
1937                 }
1938         }
1939
1940         /* Now process 'del_list' outside the lock */
1941         if (!list_empty(&tmp_del_list)) {
1942                 int del_list_size;
1943
1944                 filter_list_len = pf->hw.aq.asq_buf_size /
1945                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1946                 del_list_size = filter_list_len *
1947                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1948                 del_list = kzalloc(del_list_size, GFP_ATOMIC);
1949                 if (!del_list) {
1950                         i40e_cleanup_add_list(&tmp_add_list);
1951
1952                         /* Undo VSI's MAC filter entry element updates */
1953                         spin_lock_bh(&vsi->mac_filter_list_lock);
1954                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1955                         i40e_undo_add_filter_entries(vsi);
1956                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1957                         retval = -ENOMEM;
1958                         goto out;
1959                 }
1960
1961                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1962                         cmd_flags = 0;
1963
1964                         /* add to delete list */
1965                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1966                         del_list[num_del].vlan_tag =
1967                                 cpu_to_le16((u16)(f->vlan ==
1968                                             I40E_VLAN_ANY ? 0 : f->vlan));
1969
1970                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1971                         del_list[num_del].flags = cmd_flags;
1972                         num_del++;
1973
1974                         /* flush a full buffer */
1975                         if (num_del == filter_list_len) {
1976                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1977                                                                 vsi->seid,
1978                                                                 del_list,
1979                                                                 num_del,
1980                                                                 NULL);
1981                                 aq_err = pf->hw.aq.asq_last_status;
1982                                 num_del = 0;
1983                                 memset(del_list, 0, del_list_size);
1984
1985                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1986                                         retval = -EIO;
1987                                         dev_err(&pf->pdev->dev,
1988                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1989                                                 i40e_stat_str(&pf->hw, aq_ret),
1990                                                 i40e_aq_str(&pf->hw, aq_err));
1991                                 }
1992                         }
1993                         /* Release memory for MAC filter entries which were
1994                          * synced up with HW.
1995                          */
1996                         list_del(&f->list);
1997                         kfree(f);
1998                 }
1999
2000                 if (num_del) {
2001                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
2002                                                         del_list, num_del,
2003                                                         NULL);
2004                         aq_err = pf->hw.aq.asq_last_status;
2005                         num_del = 0;
2006
2007                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
2008                                 dev_info(&pf->pdev->dev,
2009                                          "ignoring delete macvlan error, err %s aq_err %s\n",
2010                                          i40e_stat_str(&pf->hw, aq_ret),
2011                                          i40e_aq_str(&pf->hw, aq_err));
2012                 }
2013
2014                 kfree(del_list);
2015                 del_list = NULL;
2016         }
2017
2018         if (!list_empty(&tmp_add_list)) {
2019                 int add_list_size;
2020
2021                 /* do all the adds now */
2022                 filter_list_len = pf->hw.aq.asq_buf_size /
2023                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2024                 add_list_size = filter_list_len *
2025                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2026                 add_list = kzalloc(add_list_size, GFP_ATOMIC);
2027                 if (!add_list) {
2028                         /* Purge element from temporary lists */
2029                         i40e_cleanup_add_list(&tmp_add_list);
2030
2031                         /* Undo add filter entries from VSI MAC filter list */
2032                         spin_lock_bh(&vsi->mac_filter_list_lock);
2033                         i40e_undo_add_filter_entries(vsi);
2034                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2035                         retval = -ENOMEM;
2036                         goto out;
2037                 }
2038
2039                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2040
2041                         add_happened = true;
2042                         cmd_flags = 0;
2043
2044                         /* add to add array */
2045                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2046                         add_list[num_add].vlan_tag =
2047                                 cpu_to_le16(
2048                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2049                         add_list[num_add].queue_number = 0;
2050
2051                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2052                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2053                         num_add++;
2054
2055                         /* flush a full buffer */
2056                         if (num_add == filter_list_len) {
2057                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2058                                                              add_list, num_add,
2059                                                              NULL);
2060                                 aq_err = pf->hw.aq.asq_last_status;
2061                                 num_add = 0;
2062
2063                                 if (aq_ret)
2064                                         break;
2065                                 memset(add_list, 0, add_list_size);
2066                         }
2067                         /* Entries from tmp_add_list were cloned from MAC
2068                          * filter list, hence clean those cloned entries
2069                          */
2070                         list_del(&f->list);
2071                         kfree(f);
2072                 }
2073
2074                 if (num_add) {
2075                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2076                                                      add_list, num_add, NULL);
2077                         aq_err = pf->hw.aq.asq_last_status;
2078                         num_add = 0;
2079                 }
2080                 kfree(add_list);
2081                 add_list = NULL;
2082
2083                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2084                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2085                         dev_info(&pf->pdev->dev,
2086                                  "add filter failed, err %s aq_err %s\n",
2087                                  i40e_stat_str(&pf->hw, aq_ret),
2088                                  i40e_aq_str(&pf->hw, aq_err));
2089                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2090                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2091                                       &vsi->state)) {
2092                                 promisc_forced_on = true;
2093                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2094                                         &vsi->state);
2095                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2096                         }
2097                 }
2098         }
2099
2100         /* check for changes in promiscuous modes */
2101         if (changed_flags & IFF_ALLMULTI) {
2102                 bool cur_multipromisc;
2103
2104                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2105                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2106                                                                vsi->seid,
2107                                                                cur_multipromisc,
2108                                                                NULL);
2109                 if (aq_ret) {
2110                         retval = i40e_aq_rc_to_posix(aq_ret,
2111                                                      pf->hw.aq.asq_last_status);
2112                         dev_info(&pf->pdev->dev,
2113                                  "set multi promisc failed, err %s aq_err %s\n",
2114                                  i40e_stat_str(&pf->hw, aq_ret),
2115                                  i40e_aq_str(&pf->hw,
2116                                              pf->hw.aq.asq_last_status));
2117                 }
2118         }
2119         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2120                 bool cur_promisc;
2121
2122                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2123                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2124                                         &vsi->state));
2125                 if ((vsi->type == I40E_VSI_MAIN) &&
2126                     (pf->lan_veb != I40E_NO_VEB) &&
2127                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2128                         /* set defport ON for Main VSI instead of true promisc
2129                          * this way we will get all unicast/multicast and VLAN
2130                          * promisc behavior but will not get VF or VMDq traffic
2131                          * replicated on the Main VSI.
2132                          */
2133                         if (pf->cur_promisc != cur_promisc) {
2134                                 pf->cur_promisc = cur_promisc;
2135                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2136                         }
2137                 } else {
2138                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2139                                                           &vsi->back->hw,
2140                                                           vsi->seid,
2141                                                           cur_promisc, NULL);
2142                         if (aq_ret) {
2143                                 retval =
2144                                 i40e_aq_rc_to_posix(aq_ret,
2145                                                     pf->hw.aq.asq_last_status);
2146                                 dev_info(&pf->pdev->dev,
2147                                          "set unicast promisc failed, err %d, aq_err %d\n",
2148                                          aq_ret, pf->hw.aq.asq_last_status);
2149                         }
2150                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2151                                                           &vsi->back->hw,
2152                                                           vsi->seid,
2153                                                           cur_promisc, NULL);
2154                         if (aq_ret) {
2155                                 retval =
2156                                 i40e_aq_rc_to_posix(aq_ret,
2157                                                     pf->hw.aq.asq_last_status);
2158                                 dev_info(&pf->pdev->dev,
2159                                          "set multicast promisc failed, err %d, aq_err %d\n",
2160                                          aq_ret, pf->hw.aq.asq_last_status);
2161                         }
2162                 }
2163                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2164                                                    vsi->seid,
2165                                                    cur_promisc, NULL);
2166                 if (aq_ret) {
2167                         retval = i40e_aq_rc_to_posix(aq_ret,
2168                                                      pf->hw.aq.asq_last_status);
2169                         dev_info(&pf->pdev->dev,
2170                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2171                                  i40e_stat_str(&pf->hw, aq_ret),
2172                                  i40e_aq_str(&pf->hw,
2173                                              pf->hw.aq.asq_last_status));
2174                 }
2175         }
2176 out:
2177         /* if something went wrong then set the changed flag so we try again */
2178         if (retval)
2179                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2180
2181         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2182         return retval;
2183 }
2184
2185 /**
2186  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2187  * @pf: board private structure
2188  **/
2189 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2190 {
2191         int v;
2192
2193         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2194                 return;
2195         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2196
2197         for (v = 0; v < pf->num_alloc_vsi; v++) {
2198                 if (pf->vsi[v] &&
2199                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2200                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2201
2202                         if (ret) {
2203                                 /* come back and try again later */
2204                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2205                                 break;
2206                         }
2207                 }
2208         }
2209 }
2210
2211 /**
2212  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2213  * @netdev: network interface device structure
2214  * @new_mtu: new value for maximum frame size
2215  *
2216  * Returns 0 on success, negative on failure
2217  **/
2218 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2219 {
2220         struct i40e_netdev_priv *np = netdev_priv(netdev);
2221         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2222         struct i40e_vsi *vsi = np->vsi;
2223
2224         /* MTU < 68 is an error and causes problems on some kernels */
2225         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2226                 return -EINVAL;
2227
2228         netdev_info(netdev, "changing MTU from %d to %d\n",
2229                     netdev->mtu, new_mtu);
2230         netdev->mtu = new_mtu;
2231         if (netif_running(netdev))
2232                 i40e_vsi_reinit_locked(vsi);
2233         i40e_notify_client_of_l2_param_changes(vsi);
2234         return 0;
2235 }
2236
2237 /**
2238  * i40e_ioctl - Access the hwtstamp interface
2239  * @netdev: network interface device structure
2240  * @ifr: interface request data
2241  * @cmd: ioctl command
2242  **/
2243 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2244 {
2245         struct i40e_netdev_priv *np = netdev_priv(netdev);
2246         struct i40e_pf *pf = np->vsi->back;
2247
2248         switch (cmd) {
2249         case SIOCGHWTSTAMP:
2250                 return i40e_ptp_get_ts_config(pf, ifr);
2251         case SIOCSHWTSTAMP:
2252                 return i40e_ptp_set_ts_config(pf, ifr);
2253         default:
2254                 return -EOPNOTSUPP;
2255         }
2256 }
2257
2258 /**
2259  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2260  * @vsi: the vsi being adjusted
2261  **/
2262 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2263 {
2264         struct i40e_vsi_context ctxt;
2265         i40e_status ret;
2266
2267         if ((vsi->info.valid_sections &
2268              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2269             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2270                 return;  /* already enabled */
2271
2272         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2274                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2275
2276         ctxt.seid = vsi->seid;
2277         ctxt.info = vsi->info;
2278         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2279         if (ret) {
2280                 dev_info(&vsi->back->pdev->dev,
2281                          "update vlan stripping failed, err %s aq_err %s\n",
2282                          i40e_stat_str(&vsi->back->hw, ret),
2283                          i40e_aq_str(&vsi->back->hw,
2284                                      vsi->back->hw.aq.asq_last_status));
2285         }
2286 }
2287
2288 /**
2289  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2290  * @vsi: the vsi being adjusted
2291  **/
2292 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2293 {
2294         struct i40e_vsi_context ctxt;
2295         i40e_status ret;
2296
2297         if ((vsi->info.valid_sections &
2298              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2299             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2300              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2301                 return;  /* already disabled */
2302
2303         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2304         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2305                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2306
2307         ctxt.seid = vsi->seid;
2308         ctxt.info = vsi->info;
2309         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2310         if (ret) {
2311                 dev_info(&vsi->back->pdev->dev,
2312                          "update vlan stripping failed, err %s aq_err %s\n",
2313                          i40e_stat_str(&vsi->back->hw, ret),
2314                          i40e_aq_str(&vsi->back->hw,
2315                                      vsi->back->hw.aq.asq_last_status));
2316         }
2317 }
2318
2319 /**
2320  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2321  * @netdev: network interface to be adjusted
2322  * @features: netdev features to test if VLAN offload is enabled or not
2323  **/
2324 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2325 {
2326         struct i40e_netdev_priv *np = netdev_priv(netdev);
2327         struct i40e_vsi *vsi = np->vsi;
2328
2329         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2330                 i40e_vlan_stripping_enable(vsi);
2331         else
2332                 i40e_vlan_stripping_disable(vsi);
2333 }
2334
2335 /**
2336  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2337  * @vsi: the vsi being configured
2338  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2339  **/
2340 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2341 {
2342         struct i40e_mac_filter *f, *add_f;
2343         bool is_netdev, is_vf;
2344
2345         is_vf = (vsi->type == I40E_VSI_SRIOV);
2346         is_netdev = !!(vsi->netdev);
2347
2348         /* Locked once because all functions invoked below iterates list*/
2349         spin_lock_bh(&vsi->mac_filter_list_lock);
2350
2351         if (is_netdev) {
2352                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2353                                         is_vf, is_netdev);
2354                 if (!add_f) {
2355                         dev_info(&vsi->back->pdev->dev,
2356                                  "Could not add vlan filter %d for %pM\n",
2357                                  vid, vsi->netdev->dev_addr);
2358                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2359                         return -ENOMEM;
2360                 }
2361         }
2362
2363         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2364                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2365                 if (!add_f) {
2366                         dev_info(&vsi->back->pdev->dev,
2367                                  "Could not add vlan filter %d for %pM\n",
2368                                  vid, f->macaddr);
2369                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2370                         return -ENOMEM;
2371                 }
2372         }
2373
2374         /* Now if we add a vlan tag, make sure to check if it is the first
2375          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2376          * with 0, so we now accept untagged and specified tagged traffic
2377          * (and not any taged and untagged)
2378          */
2379         if (vid > 0) {
2380                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2381                                                   I40E_VLAN_ANY,
2382                                                   is_vf, is_netdev)) {
2383                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2384                                         I40E_VLAN_ANY, is_vf, is_netdev);
2385                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2386                                                 is_vf, is_netdev);
2387                         if (!add_f) {
2388                                 dev_info(&vsi->back->pdev->dev,
2389                                          "Could not add filter 0 for %pM\n",
2390                                          vsi->netdev->dev_addr);
2391                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2392                                 return -ENOMEM;
2393                         }
2394                 }
2395         }
2396
2397         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2398         if (vid > 0 && !vsi->info.pvid) {
2399                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2400                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2401                                               is_vf, is_netdev))
2402                                 continue;
2403                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2404                                         is_vf, is_netdev);
2405                         add_f = i40e_add_filter(vsi, f->macaddr,
2406                                                 0, is_vf, is_netdev);
2407                         if (!add_f) {
2408                                 dev_info(&vsi->back->pdev->dev,
2409                                          "Could not add filter 0 for %pM\n",
2410                                         f->macaddr);
2411                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2412                                 return -ENOMEM;
2413                         }
2414                 }
2415         }
2416
2417         spin_unlock_bh(&vsi->mac_filter_list_lock);
2418
2419         /* schedule our worker thread which will take care of
2420          * applying the new filter changes
2421          */
2422         i40e_service_event_schedule(vsi->back);
2423         return 0;
2424 }
2425
2426 /**
2427  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2428  * @vsi: the vsi being configured
2429  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2430  *
2431  * Return: 0 on success or negative otherwise
2432  **/
2433 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2434 {
2435         struct net_device *netdev = vsi->netdev;
2436         struct i40e_mac_filter *f, *add_f;
2437         bool is_vf, is_netdev;
2438         int filter_count = 0;
2439
2440         is_vf = (vsi->type == I40E_VSI_SRIOV);
2441         is_netdev = !!(netdev);
2442
2443         /* Locked once because all functions invoked below iterates list */
2444         spin_lock_bh(&vsi->mac_filter_list_lock);
2445
2446         if (is_netdev)
2447                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2448
2449         list_for_each_entry(f, &vsi->mac_filter_list, list)
2450                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2451
2452         /* go through all the filters for this VSI and if there is only
2453          * vid == 0 it means there are no other filters, so vid 0 must
2454          * be replaced with -1. This signifies that we should from now
2455          * on accept any traffic (with any tag present, or untagged)
2456          */
2457         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2458                 if (is_netdev) {
2459                         if (f->vlan &&
2460                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2461                                 filter_count++;
2462                 }
2463
2464                 if (f->vlan)
2465                         filter_count++;
2466         }
2467
2468         if (!filter_count && is_netdev) {
2469                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2470                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2471                                     is_vf, is_netdev);
2472                 if (!f) {
2473                         dev_info(&vsi->back->pdev->dev,
2474                                  "Could not add filter %d for %pM\n",
2475                                  I40E_VLAN_ANY, netdev->dev_addr);
2476                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2477                         return -ENOMEM;
2478                 }
2479         }
2480
2481         if (!filter_count) {
2482                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2483                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2484                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2485                                                 is_vf, is_netdev);
2486                         if (!add_f) {
2487                                 dev_info(&vsi->back->pdev->dev,
2488                                          "Could not add filter %d for %pM\n",
2489                                          I40E_VLAN_ANY, f->macaddr);
2490                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2491                                 return -ENOMEM;
2492                         }
2493                 }
2494         }
2495
2496         spin_unlock_bh(&vsi->mac_filter_list_lock);
2497
2498         /* schedule our worker thread which will take care of
2499          * applying the new filter changes
2500          */
2501         i40e_service_event_schedule(vsi->back);
2502         return 0;
2503 }
2504
2505 /**
2506  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2507  * @netdev: network interface to be adjusted
2508  * @vid: vlan id to be added
2509  *
2510  * net_device_ops implementation for adding vlan ids
2511  **/
2512 #ifdef I40E_FCOE
2513 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2514                          __always_unused __be16 proto, u16 vid)
2515 #else
2516 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2517                                 __always_unused __be16 proto, u16 vid)
2518 #endif
2519 {
2520         struct i40e_netdev_priv *np = netdev_priv(netdev);
2521         struct i40e_vsi *vsi = np->vsi;
2522         int ret = 0;
2523
2524         if (vid > 4095)
2525                 return -EINVAL;
2526
2527         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2528
2529         /* If the network stack called us with vid = 0 then
2530          * it is asking to receive priority tagged packets with
2531          * vlan id 0.  Our HW receives them by default when configured
2532          * to receive untagged packets so there is no need to add an
2533          * extra filter for vlan 0 tagged packets.
2534          */
2535         if (vid)
2536                 ret = i40e_vsi_add_vlan(vsi, vid);
2537
2538         if (!ret && (vid < VLAN_N_VID))
2539                 set_bit(vid, vsi->active_vlans);
2540
2541         return ret;
2542 }
2543
2544 /**
2545  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2546  * @netdev: network interface to be adjusted
2547  * @vid: vlan id to be removed
2548  *
2549  * net_device_ops implementation for removing vlan ids
2550  **/
2551 #ifdef I40E_FCOE
2552 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2553                           __always_unused __be16 proto, u16 vid)
2554 #else
2555 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2556                                  __always_unused __be16 proto, u16 vid)
2557 #endif
2558 {
2559         struct i40e_netdev_priv *np = netdev_priv(netdev);
2560         struct i40e_vsi *vsi = np->vsi;
2561
2562         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2563
2564         /* return code is ignored as there is nothing a user
2565          * can do about failure to remove and a log message was
2566          * already printed from the other function
2567          */
2568         i40e_vsi_kill_vlan(vsi, vid);
2569
2570         clear_bit(vid, vsi->active_vlans);
2571
2572         return 0;
2573 }
2574
2575 /**
2576  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2577  * @vsi: the vsi being brought back up
2578  **/
2579 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2580 {
2581         u16 vid;
2582
2583         if (!vsi->netdev)
2584                 return;
2585
2586         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2587
2588         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2589                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2590                                      vid);
2591 }
2592
2593 /**
2594  * i40e_vsi_add_pvid - Add pvid for the VSI
2595  * @vsi: the vsi being adjusted
2596  * @vid: the vlan id to set as a PVID
2597  **/
2598 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2599 {
2600         struct i40e_vsi_context ctxt;
2601         i40e_status ret;
2602
2603         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2604         vsi->info.pvid = cpu_to_le16(vid);
2605         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2606                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2607                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2608
2609         ctxt.seid = vsi->seid;
2610         ctxt.info = vsi->info;
2611         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2612         if (ret) {
2613                 dev_info(&vsi->back->pdev->dev,
2614                          "add pvid failed, err %s aq_err %s\n",
2615                          i40e_stat_str(&vsi->back->hw, ret),
2616                          i40e_aq_str(&vsi->back->hw,
2617                                      vsi->back->hw.aq.asq_last_status));
2618                 return -ENOENT;
2619         }
2620
2621         return 0;
2622 }
2623
2624 /**
2625  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2626  * @vsi: the vsi being adjusted
2627  *
2628  * Just use the vlan_rx_register() service to put it back to normal
2629  **/
2630 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2631 {
2632         i40e_vlan_stripping_disable(vsi);
2633
2634         vsi->info.pvid = 0;
2635 }
2636
2637 /**
2638  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2639  * @vsi: ptr to the VSI
2640  *
2641  * If this function returns with an error, then it's possible one or
2642  * more of the rings is populated (while the rest are not).  It is the
2643  * callers duty to clean those orphaned rings.
2644  *
2645  * Return 0 on success, negative on failure
2646  **/
2647 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2648 {
2649         int i, err = 0;
2650
2651         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2652                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2653
2654         return err;
2655 }
2656
2657 /**
2658  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2659  * @vsi: ptr to the VSI
2660  *
2661  * Free VSI's transmit software resources
2662  **/
2663 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2664 {
2665         int i;
2666
2667         if (!vsi->tx_rings)
2668                 return;
2669
2670         for (i = 0; i < vsi->num_queue_pairs; i++)
2671                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2672                         i40e_free_tx_resources(vsi->tx_rings[i]);
2673 }
2674
2675 /**
2676  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2677  * @vsi: ptr to the VSI
2678  *
2679  * If this function returns with an error, then it's possible one or
2680  * more of the rings is populated (while the rest are not).  It is the
2681  * callers duty to clean those orphaned rings.
2682  *
2683  * Return 0 on success, negative on failure
2684  **/
2685 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2686 {
2687         int i, err = 0;
2688
2689         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2690                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2691 #ifdef I40E_FCOE
2692         i40e_fcoe_setup_ddp_resources(vsi);
2693 #endif
2694         return err;
2695 }
2696
2697 /**
2698  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2699  * @vsi: ptr to the VSI
2700  *
2701  * Free all receive software resources
2702  **/
2703 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2704 {
2705         int i;
2706
2707         if (!vsi->rx_rings)
2708                 return;
2709
2710         for (i = 0; i < vsi->num_queue_pairs; i++)
2711                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2712                         i40e_free_rx_resources(vsi->rx_rings[i]);
2713 #ifdef I40E_FCOE
2714         i40e_fcoe_free_ddp_resources(vsi);
2715 #endif
2716 }
2717
2718 /**
2719  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2720  * @ring: The Tx ring to configure
2721  *
2722  * This enables/disables XPS for a given Tx descriptor ring
2723  * based on the TCs enabled for the VSI that ring belongs to.
2724  **/
2725 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2726 {
2727         struct i40e_vsi *vsi = ring->vsi;
2728         cpumask_var_t mask;
2729
2730         if (!ring->q_vector || !ring->netdev)
2731                 return;
2732
2733         /* Single TC mode enable XPS */
2734         if (vsi->tc_config.numtc <= 1) {
2735                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2736                         netif_set_xps_queue(ring->netdev,
2737                                             &ring->q_vector->affinity_mask,
2738                                             ring->queue_index);
2739         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2740                 /* Disable XPS to allow selection based on TC */
2741                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2742                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2743                 free_cpumask_var(mask);
2744         }
2745
2746         /* schedule our worker thread which will take care of
2747          * applying the new filter changes
2748          */
2749         i40e_service_event_schedule(vsi->back);
2750 }
2751
2752 /**
2753  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2754  * @ring: The Tx ring to configure
2755  *
2756  * Configure the Tx descriptor ring in the HMC context.
2757  **/
2758 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2759 {
2760         struct i40e_vsi *vsi = ring->vsi;
2761         u16 pf_q = vsi->base_queue + ring->queue_index;
2762         struct i40e_hw *hw = &vsi->back->hw;
2763         struct i40e_hmc_obj_txq tx_ctx;
2764         i40e_status err = 0;
2765         u32 qtx_ctl = 0;
2766
2767         /* some ATR related tx ring init */
2768         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2769                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2770                 ring->atr_count = 0;
2771         } else {
2772                 ring->atr_sample_rate = 0;
2773         }
2774
2775         /* configure XPS */
2776         i40e_config_xps_tx_ring(ring);
2777
2778         /* clear the context structure first */
2779         memset(&tx_ctx, 0, sizeof(tx_ctx));
2780
2781         tx_ctx.new_context = 1;
2782         tx_ctx.base = (ring->dma / 128);
2783         tx_ctx.qlen = ring->count;
2784         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2785                                                I40E_FLAG_FD_ATR_ENABLED));
2786 #ifdef I40E_FCOE
2787         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2788 #endif
2789         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2790         /* FDIR VSI tx ring can still use RS bit and writebacks */
2791         if (vsi->type != I40E_VSI_FDIR)
2792                 tx_ctx.head_wb_ena = 1;
2793         tx_ctx.head_wb_addr = ring->dma +
2794                               (ring->count * sizeof(struct i40e_tx_desc));
2795
2796         /* As part of VSI creation/update, FW allocates certain
2797          * Tx arbitration queue sets for each TC enabled for
2798          * the VSI. The FW returns the handles to these queue
2799          * sets as part of the response buffer to Add VSI,
2800          * Update VSI, etc. AQ commands. It is expected that
2801          * these queue set handles be associated with the Tx
2802          * queues by the driver as part of the TX queue context
2803          * initialization. This has to be done regardless of
2804          * DCB as by default everything is mapped to TC0.
2805          */
2806         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2807         tx_ctx.rdylist_act = 0;
2808
2809         /* clear the context in the HMC */
2810         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2811         if (err) {
2812                 dev_info(&vsi->back->pdev->dev,
2813                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2814                          ring->queue_index, pf_q, err);
2815                 return -ENOMEM;
2816         }
2817
2818         /* set the context in the HMC */
2819         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2820         if (err) {
2821                 dev_info(&vsi->back->pdev->dev,
2822                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2823                          ring->queue_index, pf_q, err);
2824                 return -ENOMEM;
2825         }
2826
2827         /* Now associate this queue with this PCI function */
2828         if (vsi->type == I40E_VSI_VMDQ2) {
2829                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2830                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2831                            I40E_QTX_CTL_VFVM_INDX_MASK;
2832         } else {
2833                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2834         }
2835
2836         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2837                     I40E_QTX_CTL_PF_INDX_MASK);
2838         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2839         i40e_flush(hw);
2840
2841         /* cache tail off for easier writes later */
2842         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2843
2844         return 0;
2845 }
2846
2847 /**
2848  * i40e_configure_rx_ring - Configure a receive ring context
2849  * @ring: The Rx ring to configure
2850  *
2851  * Configure the Rx descriptor ring in the HMC context.
2852  **/
2853 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2854 {
2855         struct i40e_vsi *vsi = ring->vsi;
2856         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2857         u16 pf_q = vsi->base_queue + ring->queue_index;
2858         struct i40e_hw *hw = &vsi->back->hw;
2859         struct i40e_hmc_obj_rxq rx_ctx;
2860         i40e_status err = 0;
2861
2862         ring->state = 0;
2863
2864         /* clear the context structure first */
2865         memset(&rx_ctx, 0, sizeof(rx_ctx));
2866
2867         ring->rx_buf_len = vsi->rx_buf_len;
2868         ring->rx_hdr_len = vsi->rx_hdr_len;
2869
2870         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2871         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2872
2873         rx_ctx.base = (ring->dma / 128);
2874         rx_ctx.qlen = ring->count;
2875
2876         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2877                 set_ring_16byte_desc_enabled(ring);
2878                 rx_ctx.dsize = 0;
2879         } else {
2880                 rx_ctx.dsize = 1;
2881         }
2882
2883         rx_ctx.dtype = vsi->dtype;
2884         if (vsi->dtype) {
2885                 set_ring_ps_enabled(ring);
2886                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2887                                   I40E_RX_SPLIT_IP      |
2888                                   I40E_RX_SPLIT_TCP_UDP |
2889                                   I40E_RX_SPLIT_SCTP;
2890         } else {
2891                 rx_ctx.hsplit_0 = 0;
2892         }
2893
2894         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2895                                   (chain_len * ring->rx_buf_len));
2896         if (hw->revision_id == 0)
2897                 rx_ctx.lrxqthresh = 0;
2898         else
2899                 rx_ctx.lrxqthresh = 2;
2900         rx_ctx.crcstrip = 1;
2901         rx_ctx.l2tsel = 1;
2902         /* this controls whether VLAN is stripped from inner headers */
2903         rx_ctx.showiv = 0;
2904 #ifdef I40E_FCOE
2905         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2906 #endif
2907         /* set the prefena field to 1 because the manual says to */
2908         rx_ctx.prefena = 1;
2909
2910         /* clear the context in the HMC */
2911         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2912         if (err) {
2913                 dev_info(&vsi->back->pdev->dev,
2914                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2915                          ring->queue_index, pf_q, err);
2916                 return -ENOMEM;
2917         }
2918
2919         /* set the context in the HMC */
2920         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2921         if (err) {
2922                 dev_info(&vsi->back->pdev->dev,
2923                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2924                          ring->queue_index, pf_q, err);
2925                 return -ENOMEM;
2926         }
2927
2928         /* cache tail for quicker writes, and clear the reg before use */
2929         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2930         writel(0, ring->tail);
2931
2932         if (ring_is_ps_enabled(ring)) {
2933                 i40e_alloc_rx_headers(ring);
2934                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2935         } else {
2936                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2937         }
2938
2939         return 0;
2940 }
2941
2942 /**
2943  * i40e_vsi_configure_tx - Configure the VSI for Tx
2944  * @vsi: VSI structure describing this set of rings and resources
2945  *
2946  * Configure the Tx VSI for operation.
2947  **/
2948 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2949 {
2950         int err = 0;
2951         u16 i;
2952
2953         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2954                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2955
2956         return err;
2957 }
2958
2959 /**
2960  * i40e_vsi_configure_rx - Configure the VSI for Rx
2961  * @vsi: the VSI being configured
2962  *
2963  * Configure the Rx VSI for operation.
2964  **/
2965 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2966 {
2967         int err = 0;
2968         u16 i;
2969
2970         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2971                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2972                                + ETH_FCS_LEN + VLAN_HLEN;
2973         else
2974                 vsi->max_frame = I40E_RXBUFFER_2048;
2975
2976         /* figure out correct receive buffer length */
2977         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2978                                     I40E_FLAG_RX_PS_ENABLED)) {
2979         case I40E_FLAG_RX_1BUF_ENABLED:
2980                 vsi->rx_hdr_len = 0;
2981                 vsi->rx_buf_len = vsi->max_frame;
2982                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2983                 break;
2984         case I40E_FLAG_RX_PS_ENABLED:
2985                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2986                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2987                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2988                 break;
2989         default:
2990                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2991                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2992                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2993                 break;
2994         }
2995
2996 #ifdef I40E_FCOE
2997         /* setup rx buffer for FCoE */
2998         if ((vsi->type == I40E_VSI_FCOE) &&
2999             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3000                 vsi->rx_hdr_len = 0;
3001                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3002                 vsi->max_frame = I40E_RXBUFFER_3072;
3003                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
3004         }
3005
3006 #endif /* I40E_FCOE */
3007         /* round up for the chip's needs */
3008         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
3009                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
3010         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3011                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3012
3013         /* set up individual rings */
3014         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3015                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3016
3017         return err;
3018 }
3019
3020 /**
3021  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3022  * @vsi: ptr to the VSI
3023  **/
3024 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3025 {
3026         struct i40e_ring *tx_ring, *rx_ring;
3027         u16 qoffset, qcount;
3028         int i, n;
3029
3030         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3031                 /* Reset the TC information */
3032                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3033                         rx_ring = vsi->rx_rings[i];
3034                         tx_ring = vsi->tx_rings[i];
3035                         rx_ring->dcb_tc = 0;
3036                         tx_ring->dcb_tc = 0;
3037                 }
3038         }
3039
3040         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3041                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3042                         continue;
3043
3044                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3045                 qcount = vsi->tc_config.tc_info[n].qcount;
3046                 for (i = qoffset; i < (qoffset + qcount); i++) {
3047                         rx_ring = vsi->rx_rings[i];
3048                         tx_ring = vsi->tx_rings[i];
3049                         rx_ring->dcb_tc = n;
3050                         tx_ring->dcb_tc = n;
3051                 }
3052         }
3053 }
3054
3055 /**
3056  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3057  * @vsi: ptr to the VSI
3058  **/
3059 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3060 {
3061         if (vsi->netdev)
3062                 i40e_set_rx_mode(vsi->netdev);
3063 }
3064
3065 /**
3066  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3067  * @vsi: Pointer to the targeted VSI
3068  *
3069  * This function replays the hlist on the hw where all the SB Flow Director
3070  * filters were saved.
3071  **/
3072 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3073 {
3074         struct i40e_fdir_filter *filter;
3075         struct i40e_pf *pf = vsi->back;
3076         struct hlist_node *node;
3077
3078         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3079                 return;
3080
3081         hlist_for_each_entry_safe(filter, node,
3082                                   &pf->fdir_filter_list, fdir_node) {
3083                 i40e_add_del_fdir(vsi, filter, true);
3084         }
3085 }
3086
3087 /**
3088  * i40e_vsi_configure - Set up the VSI for action
3089  * @vsi: the VSI being configured
3090  **/
3091 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3092 {
3093         int err;
3094
3095         i40e_set_vsi_rx_mode(vsi);
3096         i40e_restore_vlan(vsi);
3097         i40e_vsi_config_dcb_rings(vsi);
3098         err = i40e_vsi_configure_tx(vsi);
3099         if (!err)
3100                 err = i40e_vsi_configure_rx(vsi);
3101
3102         return err;
3103 }
3104
3105 /**
3106  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3107  * @vsi: the VSI being configured
3108  **/
3109 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3110 {
3111         struct i40e_pf *pf = vsi->back;
3112         struct i40e_hw *hw = &pf->hw;
3113         u16 vector;
3114         int i, q;
3115         u32 qp;
3116
3117         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3118          * and PFINT_LNKLSTn registers, e.g.:
3119          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3120          */
3121         qp = vsi->base_queue;
3122         vector = vsi->base_vector;
3123         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3124                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3125
3126                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3127                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3128                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3129                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3130                      q_vector->rx.itr);
3131                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3132                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3133                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3134                      q_vector->tx.itr);
3135                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3136                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3137
3138                 /* Linked list for the queuepairs assigned to this vector */
3139                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3140                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3141                         u32 val;
3142
3143                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3144                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3145                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3146                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3147                               (I40E_QUEUE_TYPE_TX
3148                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3149
3150                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3151
3152                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3153                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3154                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3155                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3156                               (I40E_QUEUE_TYPE_RX
3157                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3158
3159                         /* Terminate the linked list */
3160                         if (q == (q_vector->num_ringpairs - 1))
3161                                 val |= (I40E_QUEUE_END_OF_LIST
3162                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3163
3164                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3165                         qp++;
3166                 }
3167         }
3168
3169         i40e_flush(hw);
3170 }
3171
3172 /**
3173  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3174  * @hw: ptr to the hardware info
3175  **/
3176 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3177 {
3178         struct i40e_hw *hw = &pf->hw;
3179         u32 val;
3180
3181         /* clear things first */
3182         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3183         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3184
3185         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3186               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3187               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3188               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3189               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3190               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3191               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3192               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3193
3194         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3195                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3196
3197         if (pf->flags & I40E_FLAG_PTP)
3198                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3199
3200         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3201
3202         /* SW_ITR_IDX = 0, but don't change INTENA */
3203         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3204                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3205
3206         /* OTHER_ITR_IDX = 0 */
3207         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3208 }
3209
3210 /**
3211  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3212  * @vsi: the VSI being configured
3213  **/
3214 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3215 {
3216         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3217         struct i40e_pf *pf = vsi->back;
3218         struct i40e_hw *hw = &pf->hw;
3219         u32 val;
3220
3221         /* set the ITR configuration */
3222         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3223         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3224         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3225         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3226         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3227         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3228         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3229
3230         i40e_enable_misc_int_causes(pf);
3231
3232         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3233         wr32(hw, I40E_PFINT_LNKLST0, 0);
3234
3235         /* Associate the queue pair to the vector and enable the queue int */
3236         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3237               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3238               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3239
3240         wr32(hw, I40E_QINT_RQCTL(0), val);
3241
3242         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3243               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3244               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3245
3246         wr32(hw, I40E_QINT_TQCTL(0), val);
3247         i40e_flush(hw);
3248 }
3249
3250 /**
3251  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3252  * @pf: board private structure
3253  **/
3254 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3255 {
3256         struct i40e_hw *hw = &pf->hw;
3257
3258         wr32(hw, I40E_PFINT_DYN_CTL0,
3259              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3260         i40e_flush(hw);
3261 }
3262
3263 /**
3264  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3265  * @pf: board private structure
3266  * @clearpba: true when all pending interrupt events should be cleared
3267  **/
3268 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3269 {
3270         struct i40e_hw *hw = &pf->hw;
3271         u32 val;
3272
3273         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3274               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3275               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3276
3277         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3278         i40e_flush(hw);
3279 }
3280
3281 /**
3282  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3283  * @irq: interrupt number
3284  * @data: pointer to a q_vector
3285  **/
3286 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3287 {
3288         struct i40e_q_vector *q_vector = data;
3289
3290         if (!q_vector->tx.ring && !q_vector->rx.ring)
3291                 return IRQ_HANDLED;
3292
3293         napi_schedule_irqoff(&q_vector->napi);
3294
3295         return IRQ_HANDLED;
3296 }
3297
3298 /**
3299  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3300  * @vsi: the VSI being configured
3301  * @basename: name for the vector
3302  *
3303  * Allocates MSI-X vectors and requests interrupts from the kernel.
3304  **/
3305 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3306 {
3307         int q_vectors = vsi->num_q_vectors;
3308         struct i40e_pf *pf = vsi->back;
3309         int base = vsi->base_vector;
3310         int rx_int_idx = 0;
3311         int tx_int_idx = 0;
3312         int vector, err;
3313
3314         for (vector = 0; vector < q_vectors; vector++) {
3315                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3316
3317                 if (q_vector->tx.ring && q_vector->rx.ring) {
3318                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3319                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3320                         tx_int_idx++;
3321                 } else if (q_vector->rx.ring) {
3322                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3323                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3324                 } else if (q_vector->tx.ring) {
3325                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3326                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3327                 } else {
3328                         /* skip this unused q_vector */
3329                         continue;
3330                 }
3331                 err = request_irq(pf->msix_entries[base + vector].vector,
3332                                   vsi->irq_handler,
3333                                   0,
3334                                   q_vector->name,
3335                                   q_vector);
3336                 if (err) {
3337                         dev_info(&pf->pdev->dev,
3338                                  "MSIX request_irq failed, error: %d\n", err);
3339                         goto free_queue_irqs;
3340                 }
3341                 /* assign the mask for this irq */
3342                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3343                                       &q_vector->affinity_mask);
3344         }
3345
3346         vsi->irqs_ready = true;
3347         return 0;
3348
3349 free_queue_irqs:
3350         while (vector) {
3351                 vector--;
3352                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3353                                       NULL);
3354                 free_irq(pf->msix_entries[base + vector].vector,
3355                          &(vsi->q_vectors[vector]));
3356         }
3357         return err;
3358 }
3359
3360 /**
3361  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3362  * @vsi: the VSI being un-configured
3363  **/
3364 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3365 {
3366         struct i40e_pf *pf = vsi->back;
3367         struct i40e_hw *hw = &pf->hw;
3368         int base = vsi->base_vector;
3369         int i;
3370
3371         for (i = 0; i < vsi->num_queue_pairs; i++) {
3372                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3373                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3374         }
3375
3376         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3377                 for (i = vsi->base_vector;
3378                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3379                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3380
3381                 i40e_flush(hw);
3382                 for (i = 0; i < vsi->num_q_vectors; i++)
3383                         synchronize_irq(pf->msix_entries[i + base].vector);
3384         } else {
3385                 /* Legacy and MSI mode - this stops all interrupt handling */
3386                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3387                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3388                 i40e_flush(hw);
3389                 synchronize_irq(pf->pdev->irq);
3390         }
3391 }
3392
3393 /**
3394  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3395  * @vsi: the VSI being configured
3396  **/
3397 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3398 {
3399         struct i40e_pf *pf = vsi->back;
3400         int i;
3401
3402         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3403                 for (i = 0; i < vsi->num_q_vectors; i++)
3404                         i40e_irq_dynamic_enable(vsi, i);
3405         } else {
3406                 i40e_irq_dynamic_enable_icr0(pf, true);
3407         }
3408
3409         i40e_flush(&pf->hw);
3410         return 0;
3411 }
3412
3413 /**
3414  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3415  * @pf: board private structure
3416  **/
3417 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3418 {
3419         /* Disable ICR 0 */
3420         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3421         i40e_flush(&pf->hw);
3422 }
3423
3424 /**
3425  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3426  * @irq: interrupt number
3427  * @data: pointer to a q_vector
3428  *
3429  * This is the handler used for all MSI/Legacy interrupts, and deals
3430  * with both queue and non-queue interrupts.  This is also used in
3431  * MSIX mode to handle the non-queue interrupts.
3432  **/
3433 static irqreturn_t i40e_intr(int irq, void *data)
3434 {
3435         struct i40e_pf *pf = (struct i40e_pf *)data;
3436         struct i40e_hw *hw = &pf->hw;
3437         irqreturn_t ret = IRQ_NONE;
3438         u32 icr0, icr0_remaining;
3439         u32 val, ena_mask;
3440
3441         icr0 = rd32(hw, I40E_PFINT_ICR0);
3442         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3443
3444         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3445         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3446                 goto enable_intr;
3447
3448         /* if interrupt but no bits showing, must be SWINT */
3449         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3450             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3451                 pf->sw_int_count++;
3452
3453         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3454             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3455                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3456                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3457                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3458         }
3459
3460         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3461         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3462                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3463                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3464
3465                 /* We do not have a way to disarm Queue causes while leaving
3466                  * interrupt enabled for all other causes, ideally
3467                  * interrupt should be disabled while we are in NAPI but
3468                  * this is not a performance path and napi_schedule()
3469                  * can deal with rescheduling.
3470                  */
3471                 if (!test_bit(__I40E_DOWN, &pf->state))
3472                         napi_schedule_irqoff(&q_vector->napi);
3473         }
3474
3475         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3476                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3477                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3478                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3479         }
3480
3481         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3482                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3483                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3484         }
3485
3486         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3487                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3488                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3489         }
3490
3491         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3492                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3493                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3494                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3495                 val = rd32(hw, I40E_GLGEN_RSTAT);
3496                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3497                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3498                 if (val == I40E_RESET_CORER) {
3499                         pf->corer_count++;
3500                 } else if (val == I40E_RESET_GLOBR) {
3501                         pf->globr_count++;
3502                 } else if (val == I40E_RESET_EMPR) {
3503                         pf->empr_count++;
3504                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3505                 }
3506         }
3507
3508         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3509                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3510                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3511                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3512                          rd32(hw, I40E_PFHMC_ERRORINFO),
3513                          rd32(hw, I40E_PFHMC_ERRORDATA));
3514         }
3515
3516         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3517                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3518
3519                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3520                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3521                         i40e_ptp_tx_hwtstamp(pf);
3522                 }
3523         }
3524
3525         /* If a critical error is pending we have no choice but to reset the
3526          * device.
3527          * Report and mask out any remaining unexpected interrupts.
3528          */
3529         icr0_remaining = icr0 & ena_mask;
3530         if (icr0_remaining) {
3531                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3532                          icr0_remaining);
3533                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3534                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3535                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3536                         dev_info(&pf->pdev->dev, "device will be reset\n");
3537                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3538                         i40e_service_event_schedule(pf);
3539                 }
3540                 ena_mask &= ~icr0_remaining;
3541         }
3542         ret = IRQ_HANDLED;
3543
3544 enable_intr:
3545         /* re-enable interrupt causes */
3546         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3547         if (!test_bit(__I40E_DOWN, &pf->state)) {
3548                 i40e_service_event_schedule(pf);
3549                 i40e_irq_dynamic_enable_icr0(pf, false);
3550         }
3551
3552         return ret;
3553 }
3554
3555 /**
3556  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3557  * @tx_ring:  tx ring to clean
3558  * @budget:   how many cleans we're allowed
3559  *
3560  * Returns true if there's any budget left (e.g. the clean is finished)
3561  **/
3562 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3563 {
3564         struct i40e_vsi *vsi = tx_ring->vsi;
3565         u16 i = tx_ring->next_to_clean;
3566         struct i40e_tx_buffer *tx_buf;
3567         struct i40e_tx_desc *tx_desc;
3568
3569         tx_buf = &tx_ring->tx_bi[i];
3570         tx_desc = I40E_TX_DESC(tx_ring, i);
3571         i -= tx_ring->count;
3572
3573         do {
3574                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3575
3576                 /* if next_to_watch is not set then there is no work pending */
3577                 if (!eop_desc)
3578                         break;
3579
3580                 /* prevent any other reads prior to eop_desc */
3581                 read_barrier_depends();
3582
3583                 /* if the descriptor isn't done, no work yet to do */
3584                 if (!(eop_desc->cmd_type_offset_bsz &
3585                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3586                         break;
3587
3588                 /* clear next_to_watch to prevent false hangs */
3589                 tx_buf->next_to_watch = NULL;
3590
3591                 tx_desc->buffer_addr = 0;
3592                 tx_desc->cmd_type_offset_bsz = 0;
3593                 /* move past filter desc */
3594                 tx_buf++;
3595                 tx_desc++;
3596                 i++;
3597                 if (unlikely(!i)) {
3598                         i -= tx_ring->count;
3599                         tx_buf = tx_ring->tx_bi;
3600                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3601                 }
3602                 /* unmap skb header data */
3603                 dma_unmap_single(tx_ring->dev,
3604                                  dma_unmap_addr(tx_buf, dma),
3605                                  dma_unmap_len(tx_buf, len),
3606                                  DMA_TO_DEVICE);
3607                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3608                         kfree(tx_buf->raw_buf);
3609
3610                 tx_buf->raw_buf = NULL;
3611                 tx_buf->tx_flags = 0;
3612                 tx_buf->next_to_watch = NULL;
3613                 dma_unmap_len_set(tx_buf, len, 0);
3614                 tx_desc->buffer_addr = 0;
3615                 tx_desc->cmd_type_offset_bsz = 0;
3616
3617                 /* move us past the eop_desc for start of next FD desc */
3618                 tx_buf++;
3619                 tx_desc++;
3620                 i++;
3621                 if (unlikely(!i)) {
3622                         i -= tx_ring->count;
3623                         tx_buf = tx_ring->tx_bi;
3624                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3625                 }
3626
3627                 /* update budget accounting */
3628                 budget--;
3629         } while (likely(budget));
3630
3631         i += tx_ring->count;
3632         tx_ring->next_to_clean = i;
3633
3634         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3635                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3636
3637         return budget > 0;
3638 }
3639
3640 /**
3641  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3642  * @irq: interrupt number
3643  * @data: pointer to a q_vector
3644  **/
3645 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3646 {
3647         struct i40e_q_vector *q_vector = data;
3648         struct i40e_vsi *vsi;
3649
3650         if (!q_vector->tx.ring)
3651                 return IRQ_HANDLED;
3652
3653         vsi = q_vector->tx.ring->vsi;
3654         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3655
3656         return IRQ_HANDLED;
3657 }
3658
3659 /**
3660  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3661  * @vsi: the VSI being configured
3662  * @v_idx: vector index
3663  * @qp_idx: queue pair index
3664  **/
3665 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3666 {
3667         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3668         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3669         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3670
3671         tx_ring->q_vector = q_vector;
3672         tx_ring->next = q_vector->tx.ring;
3673         q_vector->tx.ring = tx_ring;
3674         q_vector->tx.count++;
3675
3676         rx_ring->q_vector = q_vector;
3677         rx_ring->next = q_vector->rx.ring;
3678         q_vector->rx.ring = rx_ring;
3679         q_vector->rx.count++;
3680 }
3681
3682 /**
3683  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3684  * @vsi: the VSI being configured
3685  *
3686  * This function maps descriptor rings to the queue-specific vectors
3687  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3688  * one vector per queue pair, but on a constrained vector budget, we
3689  * group the queue pairs as "efficiently" as possible.
3690  **/
3691 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3692 {
3693         int qp_remaining = vsi->num_queue_pairs;
3694         int q_vectors = vsi->num_q_vectors;
3695         int num_ringpairs;
3696         int v_start = 0;
3697         int qp_idx = 0;
3698
3699         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3700          * group them so there are multiple queues per vector.
3701          * It is also important to go through all the vectors available to be
3702          * sure that if we don't use all the vectors, that the remaining vectors
3703          * are cleared. This is especially important when decreasing the
3704          * number of queues in use.
3705          */
3706         for (; v_start < q_vectors; v_start++) {
3707                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3708
3709                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3710
3711                 q_vector->num_ringpairs = num_ringpairs;
3712
3713                 q_vector->rx.count = 0;
3714                 q_vector->tx.count = 0;
3715                 q_vector->rx.ring = NULL;
3716                 q_vector->tx.ring = NULL;
3717
3718                 while (num_ringpairs--) {
3719                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3720                         qp_idx++;
3721                         qp_remaining--;
3722                 }
3723         }
3724 }
3725
3726 /**
3727  * i40e_vsi_request_irq - Request IRQ from the OS
3728  * @vsi: the VSI being configured
3729  * @basename: name for the vector
3730  **/
3731 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3732 {
3733         struct i40e_pf *pf = vsi->back;
3734         int err;
3735
3736         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3737                 err = i40e_vsi_request_irq_msix(vsi, basename);
3738         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3739                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3740                                   pf->int_name, pf);
3741         else
3742                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3743                                   pf->int_name, pf);
3744
3745         if (err)
3746                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3747
3748         return err;
3749 }
3750
3751 #ifdef CONFIG_NET_POLL_CONTROLLER
3752 /**
3753  * i40e_netpoll - A Polling 'interrupt' handler
3754  * @netdev: network interface device structure
3755  *
3756  * This is used by netconsole to send skbs without having to re-enable
3757  * interrupts.  It's not called while the normal interrupt routine is executing.
3758  **/
3759 #ifdef I40E_FCOE
3760 void i40e_netpoll(struct net_device *netdev)
3761 #else
3762 static void i40e_netpoll(struct net_device *netdev)
3763 #endif
3764 {
3765         struct i40e_netdev_priv *np = netdev_priv(netdev);
3766         struct i40e_vsi *vsi = np->vsi;
3767         struct i40e_pf *pf = vsi->back;
3768         int i;
3769
3770         /* if interface is down do nothing */
3771         if (test_bit(__I40E_DOWN, &vsi->state))
3772                 return;
3773
3774         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3775                 for (i = 0; i < vsi->num_q_vectors; i++)
3776                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3777         } else {
3778                 i40e_intr(pf->pdev->irq, netdev);
3779         }
3780 }
3781 #endif
3782
3783 /**
3784  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3785  * @pf: the PF being configured
3786  * @pf_q: the PF queue
3787  * @enable: enable or disable state of the queue
3788  *
3789  * This routine will wait for the given Tx queue of the PF to reach the
3790  * enabled or disabled state.
3791  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3792  * multiple retries; else will return 0 in case of success.
3793  **/
3794 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3795 {
3796         int i;
3797         u32 tx_reg;
3798
3799         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3800                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3801                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3802                         break;
3803
3804                 usleep_range(10, 20);
3805         }
3806         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3807                 return -ETIMEDOUT;
3808
3809         return 0;
3810 }
3811
3812 /**
3813  * i40e_vsi_control_tx - Start or stop a VSI's rings
3814  * @vsi: the VSI being configured
3815  * @enable: start or stop the rings
3816  **/
3817 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3818 {
3819         struct i40e_pf *pf = vsi->back;
3820         struct i40e_hw *hw = &pf->hw;
3821         int i, j, pf_q, ret = 0;
3822         u32 tx_reg;
3823
3824         pf_q = vsi->base_queue;
3825         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3826
3827                 /* warn the TX unit of coming changes */
3828                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3829                 if (!enable)
3830                         usleep_range(10, 20);
3831
3832                 for (j = 0; j < 50; j++) {
3833                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3834                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3835                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3836                                 break;
3837                         usleep_range(1000, 2000);
3838                 }
3839                 /* Skip if the queue is already in the requested state */
3840                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3841                         continue;
3842
3843                 /* turn on/off the queue */
3844                 if (enable) {
3845                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3846                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3847                 } else {
3848                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3849                 }
3850
3851                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3852                 /* No waiting for the Tx queue to disable */
3853                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3854                         continue;
3855
3856                 /* wait for the change to finish */
3857                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3858                 if (ret) {
3859                         dev_info(&pf->pdev->dev,
3860                                  "VSI seid %d Tx ring %d %sable timeout\n",
3861                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3862                         break;
3863                 }
3864         }
3865
3866         if (hw->revision_id == 0)
3867                 mdelay(50);
3868         return ret;
3869 }
3870
3871 /**
3872  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3873  * @pf: the PF being configured
3874  * @pf_q: the PF queue
3875  * @enable: enable or disable state of the queue
3876  *
3877  * This routine will wait for the given Rx queue of the PF to reach the
3878  * enabled or disabled state.
3879  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3880  * multiple retries; else will return 0 in case of success.
3881  **/
3882 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3883 {
3884         int i;
3885         u32 rx_reg;
3886
3887         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3888                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3889                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3890                         break;
3891
3892                 usleep_range(10, 20);
3893         }
3894         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3895                 return -ETIMEDOUT;
3896
3897         return 0;
3898 }
3899
3900 /**
3901  * i40e_vsi_control_rx - Start or stop a VSI's rings
3902  * @vsi: the VSI being configured
3903  * @enable: start or stop the rings
3904  **/
3905 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3906 {
3907         struct i40e_pf *pf = vsi->back;
3908         struct i40e_hw *hw = &pf->hw;
3909         int i, j, pf_q, ret = 0;
3910         u32 rx_reg;
3911
3912         pf_q = vsi->base_queue;
3913         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3914                 for (j = 0; j < 50; j++) {
3915                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3916                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3917                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3918                                 break;
3919                         usleep_range(1000, 2000);
3920                 }
3921
3922                 /* Skip if the queue is already in the requested state */
3923                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3924                         continue;
3925
3926                 /* turn on/off the queue */
3927                 if (enable)
3928                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3929                 else
3930                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3931                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3932                 /* No waiting for the Tx queue to disable */
3933                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3934                         continue;
3935
3936                 /* wait for the change to finish */
3937                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3938                 if (ret) {
3939                         dev_info(&pf->pdev->dev,
3940                                  "VSI seid %d Rx ring %d %sable timeout\n",
3941                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3942                         break;
3943                 }
3944         }
3945
3946         return ret;
3947 }
3948
3949 /**
3950  * i40e_vsi_control_rings - Start or stop a VSI's rings
3951  * @vsi: the VSI being configured
3952  * @enable: start or stop the rings
3953  **/
3954 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3955 {
3956         int ret = 0;
3957
3958         /* do rx first for enable and last for disable */
3959         if (request) {
3960                 ret = i40e_vsi_control_rx(vsi, request);
3961                 if (ret)
3962                         return ret;
3963                 ret = i40e_vsi_control_tx(vsi, request);
3964         } else {
3965                 /* Ignore return value, we need to shutdown whatever we can */
3966                 i40e_vsi_control_tx(vsi, request);
3967                 i40e_vsi_control_rx(vsi, request);
3968         }
3969
3970         return ret;
3971 }
3972
3973 /**
3974  * i40e_vsi_free_irq - Free the irq association with the OS
3975  * @vsi: the VSI being configured
3976  **/
3977 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3978 {
3979         struct i40e_pf *pf = vsi->back;
3980         struct i40e_hw *hw = &pf->hw;
3981         int base = vsi->base_vector;
3982         u32 val, qp;
3983         int i;
3984
3985         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3986                 if (!vsi->q_vectors)
3987                         return;
3988
3989                 if (!vsi->irqs_ready)
3990                         return;
3991
3992                 vsi->irqs_ready = false;
3993                 for (i = 0; i < vsi->num_q_vectors; i++) {
3994                         u16 vector = i + base;
3995
3996                         /* free only the irqs that were actually requested */
3997                         if (!vsi->q_vectors[i] ||
3998                             !vsi->q_vectors[i]->num_ringpairs)
3999                                 continue;
4000
4001                         /* clear the affinity_mask in the IRQ descriptor */
4002                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
4003                                               NULL);
4004                         free_irq(pf->msix_entries[vector].vector,
4005                                  vsi->q_vectors[i]);
4006
4007                         /* Tear down the interrupt queue link list
4008                          *
4009                          * We know that they come in pairs and always
4010                          * the Rx first, then the Tx.  To clear the
4011                          * link list, stick the EOL value into the
4012                          * next_q field of the registers.
4013                          */
4014                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4015                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4016                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4017                         val |= I40E_QUEUE_END_OF_LIST
4018                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4019                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4020
4021                         while (qp != I40E_QUEUE_END_OF_LIST) {
4022                                 u32 next;
4023
4024                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4025
4026                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4027                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4028                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4029                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4030
4031                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4032                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4033
4034                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4035
4036                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4037
4038                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4039                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4040
4041                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4042                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4043                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4044                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4045
4046                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4047                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4048
4049                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4050                                 qp = next;
4051                         }
4052                 }
4053         } else {
4054                 free_irq(pf->pdev->irq, pf);
4055
4056                 val = rd32(hw, I40E_PFINT_LNKLST0);
4057                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4058                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4059                 val |= I40E_QUEUE_END_OF_LIST
4060                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4061                 wr32(hw, I40E_PFINT_LNKLST0, val);
4062
4063                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4064                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4065                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4066                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4067                          I40E_QINT_RQCTL_INTEVENT_MASK);
4068
4069                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4070                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4071
4072                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4073
4074                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4075
4076                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4077                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4078                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4079                          I40E_QINT_TQCTL_INTEVENT_MASK);
4080
4081                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4082                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4083
4084                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4085         }
4086 }
4087
4088 /**
4089  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4090  * @vsi: the VSI being configured
4091  * @v_idx: Index of vector to be freed
4092  *
4093  * This function frees the memory allocated to the q_vector.  In addition if
4094  * NAPI is enabled it will delete any references to the NAPI struct prior
4095  * to freeing the q_vector.
4096  **/
4097 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4098 {
4099         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4100         struct i40e_ring *ring;
4101
4102         if (!q_vector)
4103                 return;
4104
4105         /* disassociate q_vector from rings */
4106         i40e_for_each_ring(ring, q_vector->tx)
4107                 ring->q_vector = NULL;
4108
4109         i40e_for_each_ring(ring, q_vector->rx)
4110                 ring->q_vector = NULL;
4111
4112         /* only VSI w/ an associated netdev is set up w/ NAPI */
4113         if (vsi->netdev)
4114                 netif_napi_del(&q_vector->napi);
4115
4116         vsi->q_vectors[v_idx] = NULL;
4117
4118         kfree_rcu(q_vector, rcu);
4119 }
4120
4121 /**
4122  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4123  * @vsi: the VSI being un-configured
4124  *
4125  * This frees the memory allocated to the q_vectors and
4126  * deletes references to the NAPI struct.
4127  **/
4128 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4129 {
4130         int v_idx;
4131
4132         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4133                 i40e_free_q_vector(vsi, v_idx);
4134 }
4135
4136 /**
4137  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4138  * @pf: board private structure
4139  **/
4140 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4141 {
4142         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4143         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4144                 pci_disable_msix(pf->pdev);
4145                 kfree(pf->msix_entries);
4146                 pf->msix_entries = NULL;
4147                 kfree(pf->irq_pile);
4148                 pf->irq_pile = NULL;
4149         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4150                 pci_disable_msi(pf->pdev);
4151         }
4152         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4153 }
4154
4155 /**
4156  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4157  * @pf: board private structure
4158  *
4159  * We go through and clear interrupt specific resources and reset the structure
4160  * to pre-load conditions
4161  **/
4162 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4163 {
4164         int i;
4165
4166         i40e_stop_misc_vector(pf);
4167         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4168                 synchronize_irq(pf->msix_entries[0].vector);
4169                 free_irq(pf->msix_entries[0].vector, pf);
4170         }
4171
4172         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4173                       I40E_IWARP_IRQ_PILE_ID);
4174
4175         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4176         for (i = 0; i < pf->num_alloc_vsi; i++)
4177                 if (pf->vsi[i])
4178                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4179         i40e_reset_interrupt_capability(pf);
4180 }
4181
4182 /**
4183  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4184  * @vsi: the VSI being configured
4185  **/
4186 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4187 {
4188         int q_idx;
4189
4190         if (!vsi->netdev)
4191                 return;
4192
4193         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4194                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4195 }
4196
4197 /**
4198  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4199  * @vsi: the VSI being configured
4200  **/
4201 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4202 {
4203         int q_idx;
4204
4205         if (!vsi->netdev)
4206                 return;
4207
4208         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4209                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4210 }
4211
4212 /**
4213  * i40e_vsi_close - Shut down a VSI
4214  * @vsi: the vsi to be quelled
4215  **/
4216 static void i40e_vsi_close(struct i40e_vsi *vsi)
4217 {
4218         bool reset = false;
4219
4220         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4221                 i40e_down(vsi);
4222         i40e_vsi_free_irq(vsi);
4223         i40e_vsi_free_tx_resources(vsi);
4224         i40e_vsi_free_rx_resources(vsi);
4225         vsi->current_netdev_flags = 0;
4226         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4227                 reset = true;
4228         i40e_notify_client_of_netdev_close(vsi, reset);
4229 }
4230
4231 /**
4232  * i40e_quiesce_vsi - Pause a given VSI
4233  * @vsi: the VSI being paused
4234  **/
4235 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4236 {
4237         if (test_bit(__I40E_DOWN, &vsi->state))
4238                 return;
4239
4240         /* No need to disable FCoE VSI when Tx suspended */
4241         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4242             vsi->type == I40E_VSI_FCOE) {
4243                 dev_dbg(&vsi->back->pdev->dev,
4244                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4245                 return;
4246         }
4247
4248         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4249         if (vsi->netdev && netif_running(vsi->netdev))
4250                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4251         else
4252                 i40e_vsi_close(vsi);
4253 }
4254
4255 /**
4256  * i40e_unquiesce_vsi - Resume a given VSI
4257  * @vsi: the VSI being resumed
4258  **/
4259 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4260 {
4261         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4262                 return;
4263
4264         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4265         if (vsi->netdev && netif_running(vsi->netdev))
4266                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4267         else
4268                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4269 }
4270
4271 /**
4272  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4273  * @pf: the PF
4274  **/
4275 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4276 {
4277         int v;
4278
4279         for (v = 0; v < pf->num_alloc_vsi; v++) {
4280                 if (pf->vsi[v])
4281                         i40e_quiesce_vsi(pf->vsi[v]);
4282         }
4283 }
4284
4285 /**
4286  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4287  * @pf: the PF
4288  **/
4289 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4290 {
4291         int v;
4292
4293         for (v = 0; v < pf->num_alloc_vsi; v++) {
4294                 if (pf->vsi[v])
4295                         i40e_unquiesce_vsi(pf->vsi[v]);
4296         }
4297 }
4298
4299 #ifdef CONFIG_I40E_DCB
4300 /**
4301  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4302  * @vsi: the VSI being configured
4303  *
4304  * This function waits for the given VSI's queues to be disabled.
4305  **/
4306 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4307 {
4308         struct i40e_pf *pf = vsi->back;
4309         int i, pf_q, ret;
4310
4311         pf_q = vsi->base_queue;
4312         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4313                 /* Check and wait for the disable status of the queue */
4314                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4315                 if (ret) {
4316                         dev_info(&pf->pdev->dev,
4317                                  "VSI seid %d Tx ring %d disable timeout\n",
4318                                  vsi->seid, pf_q);
4319                         return ret;
4320                 }
4321         }
4322
4323         pf_q = vsi->base_queue;
4324         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4325                 /* Check and wait for the disable status of the queue */
4326                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4327                 if (ret) {
4328                         dev_info(&pf->pdev->dev,
4329                                  "VSI seid %d Rx ring %d disable timeout\n",
4330                                  vsi->seid, pf_q);
4331                         return ret;
4332                 }
4333         }
4334
4335         return 0;
4336 }
4337
4338 /**
4339  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4340  * @pf: the PF
4341  *
4342  * This function waits for the queues to be in disabled state for all the
4343  * VSIs that are managed by this PF.
4344  **/
4345 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4346 {
4347         int v, ret = 0;
4348
4349         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4350                 /* No need to wait for FCoE VSI queues */
4351                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4352                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4353                         if (ret)
4354                                 break;
4355                 }
4356         }
4357
4358         return ret;
4359 }
4360
4361 #endif
4362
4363 /**
4364  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4365  * @q_idx: TX queue number
4366  * @vsi: Pointer to VSI struct
4367  *
4368  * This function checks specified queue for given VSI. Detects hung condition.
4369  * Sets hung bit since it is two step process. Before next run of service task
4370  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4371  * hung condition remain unchanged and during subsequent run, this function
4372  * issues SW interrupt to recover from hung condition.
4373  **/
4374 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4375 {
4376         struct i40e_ring *tx_ring = NULL;
4377         struct i40e_pf  *pf;
4378         u32 head, val, tx_pending_hw;
4379         int i;
4380
4381         pf = vsi->back;
4382
4383         /* now that we have an index, find the tx_ring struct */
4384         for (i = 0; i < vsi->num_queue_pairs; i++) {
4385                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4386                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4387                                 tx_ring = vsi->tx_rings[i];
4388                                 break;
4389                         }
4390                 }
4391         }
4392
4393         if (!tx_ring)
4394                 return;
4395
4396         /* Read interrupt register */
4397         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4398                 val = rd32(&pf->hw,
4399                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4400                                                tx_ring->vsi->base_vector - 1));
4401         else
4402                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4403
4404         head = i40e_get_head(tx_ring);
4405
4406         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4407
4408         /* HW is done executing descriptors, updated HEAD write back,
4409          * but SW hasn't processed those descriptors. If interrupt is
4410          * not generated from this point ON, it could result into
4411          * dev_watchdog detecting timeout on those netdev_queue,
4412          * hence proactively trigger SW interrupt.
4413          */
4414         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4415                 /* NAPI Poll didn't run and clear since it was set */
4416                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4417                                        &tx_ring->q_vector->hung_detected)) {
4418                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4419                                     vsi->seid, q_idx, tx_pending_hw,
4420                                     tx_ring->next_to_clean, head,
4421                                     tx_ring->next_to_use,
4422                                     readl(tx_ring->tail));
4423                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4424                                     vsi->seid, q_idx, val);
4425                         i40e_force_wb(vsi, tx_ring->q_vector);
4426                 } else {
4427                         /* First Chance - detected possible hung */
4428                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4429                                 &tx_ring->q_vector->hung_detected);
4430                 }
4431         }
4432
4433         /* This is the case where we have interrupts missing,
4434          * so the tx_pending in HW will most likely be 0, but we
4435          * will have tx_pending in SW since the WB happened but the
4436          * interrupt got lost.
4437          */
4438         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4439             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4440                 if (napi_reschedule(&tx_ring->q_vector->napi))
4441                         tx_ring->tx_stats.tx_lost_interrupt++;
4442         }
4443 }
4444
4445 /**
4446  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4447  * @pf:  pointer to PF struct
4448  *
4449  * LAN VSI has netdev and netdev has TX queues. This function is to check
4450  * each of those TX queues if they are hung, trigger recovery by issuing
4451  * SW interrupt.
4452  **/
4453 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4454 {
4455         struct net_device *netdev;
4456         struct i40e_vsi *vsi;
4457         int i;
4458
4459         /* Only for LAN VSI */
4460         vsi = pf->vsi[pf->lan_vsi];
4461
4462         if (!vsi)
4463                 return;
4464
4465         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4466         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4467             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4468                 return;
4469
4470         /* Make sure type is MAIN VSI */
4471         if (vsi->type != I40E_VSI_MAIN)
4472                 return;
4473
4474         netdev = vsi->netdev;
4475         if (!netdev)
4476                 return;
4477
4478         /* Bail out if netif_carrier is not OK */
4479         if (!netif_carrier_ok(netdev))
4480                 return;
4481
4482         /* Go thru' TX queues for netdev */
4483         for (i = 0; i < netdev->num_tx_queues; i++) {
4484                 struct netdev_queue *q;
4485
4486                 q = netdev_get_tx_queue(netdev, i);
4487                 if (q)
4488                         i40e_detect_recover_hung_queue(i, vsi);
4489         }
4490 }
4491
4492 /**
4493  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4494  * @pf: pointer to PF
4495  *
4496  * Get TC map for ISCSI PF type that will include iSCSI TC
4497  * and LAN TC.
4498  **/
4499 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4500 {
4501         struct i40e_dcb_app_priority_table app;
4502         struct i40e_hw *hw = &pf->hw;
4503         u8 enabled_tc = 1; /* TC0 is always enabled */
4504         u8 tc, i;
4505         /* Get the iSCSI APP TLV */
4506         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4507
4508         for (i = 0; i < dcbcfg->numapps; i++) {
4509                 app = dcbcfg->app[i];
4510                 if (app.selector == I40E_APP_SEL_TCPIP &&
4511                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4512                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4513                         enabled_tc |= BIT(tc);
4514                         break;
4515                 }
4516         }
4517
4518         return enabled_tc;
4519 }
4520
4521 /**
4522  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4523  * @dcbcfg: the corresponding DCBx configuration structure
4524  *
4525  * Return the number of TCs from given DCBx configuration
4526  **/
4527 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4528 {
4529         u8 num_tc = 0;
4530         int i;
4531
4532         /* Scan the ETS Config Priority Table to find
4533          * traffic class enabled for a given priority
4534          * and use the traffic class index to get the
4535          * number of traffic classes enabled
4536          */
4537         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4538                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4539                         num_tc = dcbcfg->etscfg.prioritytable[i];
4540         }
4541
4542         /* Traffic class index starts from zero so
4543          * increment to return the actual count
4544          */
4545         return num_tc + 1;
4546 }
4547
4548 /**
4549  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4550  * @dcbcfg: the corresponding DCBx configuration structure
4551  *
4552  * Query the current DCB configuration and return the number of
4553  * traffic classes enabled from the given DCBX config
4554  **/
4555 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4556 {
4557         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4558         u8 enabled_tc = 1;
4559         u8 i;
4560
4561         for (i = 0; i < num_tc; i++)
4562                 enabled_tc |= BIT(i);
4563
4564         return enabled_tc;
4565 }
4566
4567 /**
4568  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4569  * @pf: PF being queried
4570  *
4571  * Return number of traffic classes enabled for the given PF
4572  **/
4573 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4574 {
4575         struct i40e_hw *hw = &pf->hw;
4576         u8 i, enabled_tc;
4577         u8 num_tc = 0;
4578         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4579
4580         /* If DCB is not enabled then always in single TC */
4581         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4582                 return 1;
4583
4584         /* SFP mode will be enabled for all TCs on port */
4585         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4586                 return i40e_dcb_get_num_tc(dcbcfg);
4587
4588         /* MFP mode return count of enabled TCs for this PF */
4589         if (pf->hw.func_caps.iscsi)
4590                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4591         else
4592                 return 1; /* Only TC0 */
4593
4594         /* At least have TC0 */
4595         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4596         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4597                 if (enabled_tc & BIT(i))
4598                         num_tc++;
4599         }
4600         return num_tc;
4601 }
4602
4603 /**
4604  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4605  * @pf: PF being queried
4606  *
4607  * Return a bitmap for first enabled traffic class for this PF.
4608  **/
4609 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4610 {
4611         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4612         u8 i = 0;
4613
4614         if (!enabled_tc)
4615                 return 0x1; /* TC0 */
4616
4617         /* Find the first enabled TC */
4618         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4619                 if (enabled_tc & BIT(i))
4620                         break;
4621         }
4622
4623         return BIT(i);
4624 }
4625
4626 /**
4627  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4628  * @pf: PF being queried
4629  *
4630  * Return a bitmap for enabled traffic classes for this PF.
4631  **/
4632 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4633 {
4634         /* If DCB is not enabled for this PF then just return default TC */
4635         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4636                 return i40e_pf_get_default_tc(pf);
4637
4638         /* SFP mode we want PF to be enabled for all TCs */
4639         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4640                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4641
4642         /* MFP enabled and iSCSI PF type */
4643         if (pf->hw.func_caps.iscsi)
4644                 return i40e_get_iscsi_tc_map(pf);
4645         else
4646                 return i40e_pf_get_default_tc(pf);
4647 }
4648
4649 /**
4650  * i40e_vsi_get_bw_info - Query VSI BW Information
4651  * @vsi: the VSI being queried
4652  *
4653  * Returns 0 on success, negative value on failure
4654  **/
4655 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4656 {
4657         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4658         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4659         struct i40e_pf *pf = vsi->back;
4660         struct i40e_hw *hw = &pf->hw;
4661         i40e_status ret;
4662         u32 tc_bw_max;
4663         int i;
4664
4665         /* Get the VSI level BW configuration */
4666         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4667         if (ret) {
4668                 dev_info(&pf->pdev->dev,
4669                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4670                          i40e_stat_str(&pf->hw, ret),
4671                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4672                 return -EINVAL;
4673         }
4674
4675         /* Get the VSI level BW configuration per TC */
4676         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4677                                                NULL);
4678         if (ret) {
4679                 dev_info(&pf->pdev->dev,
4680                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4681                          i40e_stat_str(&pf->hw, ret),
4682                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4683                 return -EINVAL;
4684         }
4685
4686         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4687                 dev_info(&pf->pdev->dev,
4688                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4689                          bw_config.tc_valid_bits,
4690                          bw_ets_config.tc_valid_bits);
4691                 /* Still continuing */
4692         }
4693
4694         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4695         vsi->bw_max_quanta = bw_config.max_bw;
4696         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4697                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4698         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4699                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4700                 vsi->bw_ets_limit_credits[i] =
4701                                         le16_to_cpu(bw_ets_config.credits[i]);
4702                 /* 3 bits out of 4 for each TC */
4703                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4704         }
4705
4706         return 0;
4707 }
4708
4709 /**
4710  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4711  * @vsi: the VSI being configured
4712  * @enabled_tc: TC bitmap
4713  * @bw_credits: BW shared credits per TC
4714  *
4715  * Returns 0 on success, negative value on failure
4716  **/
4717 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4718                                        u8 *bw_share)
4719 {
4720         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4721         i40e_status ret;
4722         int i;
4723
4724         bw_data.tc_valid_bits = enabled_tc;
4725         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4726                 bw_data.tc_bw_credits[i] = bw_share[i];
4727
4728         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4729                                        NULL);
4730         if (ret) {
4731                 dev_info(&vsi->back->pdev->dev,
4732                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4733                          vsi->back->hw.aq.asq_last_status);
4734                 return -EINVAL;
4735         }
4736
4737         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4738                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4739
4740         return 0;
4741 }
4742
4743 /**
4744  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4745  * @vsi: the VSI being configured
4746  * @enabled_tc: TC map to be enabled
4747  *
4748  **/
4749 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4750 {
4751         struct net_device *netdev = vsi->netdev;
4752         struct i40e_pf *pf = vsi->back;
4753         struct i40e_hw *hw = &pf->hw;
4754         u8 netdev_tc = 0;
4755         int i;
4756         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4757
4758         if (!netdev)
4759                 return;
4760
4761         if (!enabled_tc) {
4762                 netdev_reset_tc(netdev);
4763                 return;
4764         }
4765
4766         /* Set up actual enabled TCs on the VSI */
4767         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4768                 return;
4769
4770         /* set per TC queues for the VSI */
4771         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4772                 /* Only set TC queues for enabled tcs
4773                  *
4774                  * e.g. For a VSI that has TC0 and TC3 enabled the
4775                  * enabled_tc bitmap would be 0x00001001; the driver
4776                  * will set the numtc for netdev as 2 that will be
4777                  * referenced by the netdev layer as TC 0 and 1.
4778                  */
4779                 if (vsi->tc_config.enabled_tc & BIT(i))
4780                         netdev_set_tc_queue(netdev,
4781                                         vsi->tc_config.tc_info[i].netdev_tc,
4782                                         vsi->tc_config.tc_info[i].qcount,
4783                                         vsi->tc_config.tc_info[i].qoffset);
4784         }
4785
4786         /* Assign UP2TC map for the VSI */
4787         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4788                 /* Get the actual TC# for the UP */
4789                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4790                 /* Get the mapped netdev TC# for the UP */
4791                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4792                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4793         }
4794 }
4795
4796 /**
4797  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4798  * @vsi: the VSI being configured
4799  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4800  **/
4801 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4802                                       struct i40e_vsi_context *ctxt)
4803 {
4804         /* copy just the sections touched not the entire info
4805          * since not all sections are valid as returned by
4806          * update vsi params
4807          */
4808         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4809         memcpy(&vsi->info.queue_mapping,
4810                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4811         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4812                sizeof(vsi->info.tc_mapping));
4813 }
4814
4815 /**
4816  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4817  * @vsi: VSI to be configured
4818  * @enabled_tc: TC bitmap
4819  *
4820  * This configures a particular VSI for TCs that are mapped to the
4821  * given TC bitmap. It uses default bandwidth share for TCs across
4822  * VSIs to configure TC for a particular VSI.
4823  *
4824  * NOTE:
4825  * It is expected that the VSI queues have been quisced before calling
4826  * this function.
4827  **/
4828 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4829 {
4830         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4831         struct i40e_vsi_context ctxt;
4832         int ret = 0;
4833         int i;
4834
4835         /* Check if enabled_tc is same as existing or new TCs */
4836         if (vsi->tc_config.enabled_tc == enabled_tc)
4837                 return ret;
4838
4839         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4840         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4841                 if (enabled_tc & BIT(i))
4842                         bw_share[i] = 1;
4843         }
4844
4845         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4846         if (ret) {
4847                 dev_info(&vsi->back->pdev->dev,
4848                          "Failed configuring TC map %d for VSI %d\n",
4849                          enabled_tc, vsi->seid);
4850                 goto out;
4851         }
4852
4853         /* Update Queue Pairs Mapping for currently enabled UPs */
4854         ctxt.seid = vsi->seid;
4855         ctxt.pf_num = vsi->back->hw.pf_id;
4856         ctxt.vf_num = 0;
4857         ctxt.uplink_seid = vsi->uplink_seid;
4858         ctxt.info = vsi->info;
4859         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4860
4861         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4862                 ctxt.info.valid_sections |=
4863                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4864                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4865         }
4866
4867         /* Update the VSI after updating the VSI queue-mapping information */
4868         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4869         if (ret) {
4870                 dev_info(&vsi->back->pdev->dev,
4871                          "Update vsi tc config failed, err %s aq_err %s\n",
4872                          i40e_stat_str(&vsi->back->hw, ret),
4873                          i40e_aq_str(&vsi->back->hw,
4874                                      vsi->back->hw.aq.asq_last_status));
4875                 goto out;
4876         }
4877         /* update the local VSI info with updated queue map */
4878         i40e_vsi_update_queue_map(vsi, &ctxt);
4879         vsi->info.valid_sections = 0;
4880
4881         /* Update current VSI BW information */
4882         ret = i40e_vsi_get_bw_info(vsi);
4883         if (ret) {
4884                 dev_info(&vsi->back->pdev->dev,
4885                          "Failed updating vsi bw info, err %s aq_err %s\n",
4886                          i40e_stat_str(&vsi->back->hw, ret),
4887                          i40e_aq_str(&vsi->back->hw,
4888                                      vsi->back->hw.aq.asq_last_status));
4889                 goto out;
4890         }
4891
4892         /* Update the netdev TC setup */
4893         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4894 out:
4895         return ret;
4896 }
4897
4898 /**
4899  * i40e_veb_config_tc - Configure TCs for given VEB
4900  * @veb: given VEB
4901  * @enabled_tc: TC bitmap
4902  *
4903  * Configures given TC bitmap for VEB (switching) element
4904  **/
4905 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4906 {
4907         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4908         struct i40e_pf *pf = veb->pf;
4909         int ret = 0;
4910         int i;
4911
4912         /* No TCs or already enabled TCs just return */
4913         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4914                 return ret;
4915
4916         bw_data.tc_valid_bits = enabled_tc;
4917         /* bw_data.absolute_credits is not set (relative) */
4918
4919         /* Enable ETS TCs with equal BW Share for now */
4920         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4921                 if (enabled_tc & BIT(i))
4922                         bw_data.tc_bw_share_credits[i] = 1;
4923         }
4924
4925         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4926                                                    &bw_data, NULL);
4927         if (ret) {
4928                 dev_info(&pf->pdev->dev,
4929                          "VEB bw config failed, err %s aq_err %s\n",
4930                          i40e_stat_str(&pf->hw, ret),
4931                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4932                 goto out;
4933         }
4934
4935         /* Update the BW information */
4936         ret = i40e_veb_get_bw_info(veb);
4937         if (ret) {
4938                 dev_info(&pf->pdev->dev,
4939                          "Failed getting veb bw config, err %s aq_err %s\n",
4940                          i40e_stat_str(&pf->hw, ret),
4941                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4942         }
4943
4944 out:
4945         return ret;
4946 }
4947
4948 #ifdef CONFIG_I40E_DCB
4949 /**
4950  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4951  * @pf: PF struct
4952  *
4953  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4954  * the caller would've quiesce all the VSIs before calling
4955  * this function
4956  **/
4957 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4958 {
4959         u8 tc_map = 0;
4960         int ret;
4961         u8 v;
4962
4963         /* Enable the TCs available on PF to all VEBs */
4964         tc_map = i40e_pf_get_tc_map(pf);
4965         for (v = 0; v < I40E_MAX_VEB; v++) {
4966                 if (!pf->veb[v])
4967                         continue;
4968                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4969                 if (ret) {
4970                         dev_info(&pf->pdev->dev,
4971                                  "Failed configuring TC for VEB seid=%d\n",
4972                                  pf->veb[v]->seid);
4973                         /* Will try to configure as many components */
4974                 }
4975         }
4976
4977         /* Update each VSI */
4978         for (v = 0; v < pf->num_alloc_vsi; v++) {
4979                 if (!pf->vsi[v])
4980                         continue;
4981
4982                 /* - Enable all TCs for the LAN VSI
4983 #ifdef I40E_FCOE
4984                  * - For FCoE VSI only enable the TC configured
4985                  *   as per the APP TLV
4986 #endif
4987                  * - For all others keep them at TC0 for now
4988                  */
4989                 if (v == pf->lan_vsi)
4990                         tc_map = i40e_pf_get_tc_map(pf);
4991                 else
4992                         tc_map = i40e_pf_get_default_tc(pf);
4993 #ifdef I40E_FCOE
4994                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4995                         tc_map = i40e_get_fcoe_tc_map(pf);
4996 #endif /* #ifdef I40E_FCOE */
4997
4998                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4999                 if (ret) {
5000                         dev_info(&pf->pdev->dev,
5001                                  "Failed configuring TC for VSI seid=%d\n",
5002                                  pf->vsi[v]->seid);
5003                         /* Will try to configure as many components */
5004                 } else {
5005                         /* Re-configure VSI vectors based on updated TC map */
5006                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5007                         if (pf->vsi[v]->netdev)
5008                                 i40e_dcbnl_set_all(pf->vsi[v]);
5009                 }
5010                 i40e_notify_client_of_l2_param_changes(pf->vsi[v]);
5011         }
5012 }
5013
5014 /**
5015  * i40e_resume_port_tx - Resume port Tx
5016  * @pf: PF struct
5017  *
5018  * Resume a port's Tx and issue a PF reset in case of failure to
5019  * resume.
5020  **/
5021 static int i40e_resume_port_tx(struct i40e_pf *pf)
5022 {
5023         struct i40e_hw *hw = &pf->hw;
5024         int ret;
5025
5026         ret = i40e_aq_resume_port_tx(hw, NULL);
5027         if (ret) {
5028                 dev_info(&pf->pdev->dev,
5029                          "Resume Port Tx failed, err %s aq_err %s\n",
5030                           i40e_stat_str(&pf->hw, ret),
5031                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5032                 /* Schedule PF reset to recover */
5033                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5034                 i40e_service_event_schedule(pf);
5035         }
5036
5037         return ret;
5038 }
5039
5040 /**
5041  * i40e_init_pf_dcb - Initialize DCB configuration
5042  * @pf: PF being configured
5043  *
5044  * Query the current DCB configuration and cache it
5045  * in the hardware structure
5046  **/
5047 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5048 {
5049         struct i40e_hw *hw = &pf->hw;
5050         int err = 0;
5051
5052         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5053         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5054                 goto out;
5055
5056         /* Get the initial DCB configuration */
5057         err = i40e_init_dcb(hw);
5058         if (!err) {
5059                 /* Device/Function is not DCBX capable */
5060                 if ((!hw->func_caps.dcb) ||
5061                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5062                         dev_info(&pf->pdev->dev,
5063                                  "DCBX offload is not supported or is disabled for this PF.\n");
5064
5065                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5066                                 goto out;
5067
5068                 } else {
5069                         /* When status is not DISABLED then DCBX in FW */
5070                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5071                                        DCB_CAP_DCBX_VER_IEEE;
5072
5073                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5074                         /* Enable DCB tagging only when more than one TC */
5075                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5076                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5077                         dev_dbg(&pf->pdev->dev,
5078                                 "DCBX offload is supported for this PF.\n");
5079                 }
5080         } else {
5081                 dev_info(&pf->pdev->dev,
5082                          "Query for DCB configuration failed, err %s aq_err %s\n",
5083                          i40e_stat_str(&pf->hw, err),
5084                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5085         }
5086
5087 out:
5088         return err;
5089 }
5090 #endif /* CONFIG_I40E_DCB */
5091 #define SPEED_SIZE 14
5092 #define FC_SIZE 8
5093 /**
5094  * i40e_print_link_message - print link up or down
5095  * @vsi: the VSI for which link needs a message
5096  */
5097 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5098 {
5099         char *speed = "Unknown";
5100         char *fc = "Unknown";
5101
5102         if (vsi->current_isup == isup)
5103                 return;
5104         vsi->current_isup = isup;
5105         if (!isup) {
5106                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5107                 return;
5108         }
5109
5110         /* Warn user if link speed on NPAR enabled partition is not at
5111          * least 10GB
5112          */
5113         if (vsi->back->hw.func_caps.npar_enable &&
5114             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5115              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5116                 netdev_warn(vsi->netdev,
5117                             "The partition detected link speed that is less than 10Gbps\n");
5118
5119         switch (vsi->back->hw.phy.link_info.link_speed) {
5120         case I40E_LINK_SPEED_40GB:
5121                 speed = "40 G";
5122                 break;
5123         case I40E_LINK_SPEED_20GB:
5124                 speed = "20 G";
5125                 break;
5126         case I40E_LINK_SPEED_10GB:
5127                 speed = "10 G";
5128                 break;
5129         case I40E_LINK_SPEED_1GB:
5130                 speed = "1000 M";
5131                 break;
5132         case I40E_LINK_SPEED_100MB:
5133                 speed = "100 M";
5134                 break;
5135         default:
5136                 break;
5137         }
5138
5139         switch (vsi->back->hw.fc.current_mode) {
5140         case I40E_FC_FULL:
5141                 fc = "RX/TX";
5142                 break;
5143         case I40E_FC_TX_PAUSE:
5144                 fc = "TX";
5145                 break;
5146         case I40E_FC_RX_PAUSE:
5147                 fc = "RX";
5148                 break;
5149         default:
5150                 fc = "None";
5151                 break;
5152         }
5153
5154         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5155                     speed, fc);
5156 }
5157
5158 /**
5159  * i40e_up_complete - Finish the last steps of bringing up a connection
5160  * @vsi: the VSI being configured
5161  **/
5162 static int i40e_up_complete(struct i40e_vsi *vsi)
5163 {
5164         struct i40e_pf *pf = vsi->back;
5165         int err;
5166
5167         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5168                 i40e_vsi_configure_msix(vsi);
5169         else
5170                 i40e_configure_msi_and_legacy(vsi);
5171
5172         /* start rings */
5173         err = i40e_vsi_control_rings(vsi, true);
5174         if (err)
5175                 return err;
5176
5177         clear_bit(__I40E_DOWN, &vsi->state);
5178         i40e_napi_enable_all(vsi);
5179         i40e_vsi_enable_irq(vsi);
5180
5181         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5182             (vsi->netdev)) {
5183                 i40e_print_link_message(vsi, true);
5184                 netif_tx_start_all_queues(vsi->netdev);
5185                 netif_carrier_on(vsi->netdev);
5186         } else if (vsi->netdev) {
5187                 i40e_print_link_message(vsi, false);
5188                 /* need to check for qualified module here*/
5189                 if ((pf->hw.phy.link_info.link_info &
5190                         I40E_AQ_MEDIA_AVAILABLE) &&
5191                     (!(pf->hw.phy.link_info.an_info &
5192                         I40E_AQ_QUALIFIED_MODULE)))
5193                         netdev_err(vsi->netdev,
5194                                    "the driver failed to link because an unqualified module was detected.");
5195         }
5196
5197         /* replay FDIR SB filters */
5198         if (vsi->type == I40E_VSI_FDIR) {
5199                 /* reset fd counters */
5200                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5201                 if (pf->fd_tcp_rule > 0) {
5202                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5203                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5204                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5205                         pf->fd_tcp_rule = 0;
5206                 }
5207                 i40e_fdir_filter_restore(vsi);
5208         }
5209
5210         /* On the next run of the service_task, notify any clients of the new
5211          * opened netdev
5212          */
5213         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5214         i40e_service_event_schedule(pf);
5215
5216         return 0;
5217 }
5218
5219 /**
5220  * i40e_vsi_reinit_locked - Reset the VSI
5221  * @vsi: the VSI being configured
5222  *
5223  * Rebuild the ring structs after some configuration
5224  * has changed, e.g. MTU size.
5225  **/
5226 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5227 {
5228         struct i40e_pf *pf = vsi->back;
5229
5230         WARN_ON(in_interrupt());
5231         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5232                 usleep_range(1000, 2000);
5233         i40e_down(vsi);
5234
5235         /* Give a VF some time to respond to the reset.  The
5236          * two second wait is based upon the watchdog cycle in
5237          * the VF driver.
5238          */
5239         if (vsi->type == I40E_VSI_SRIOV)
5240                 msleep(2000);
5241         i40e_up(vsi);
5242         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5243 }
5244
5245 /**
5246  * i40e_up - Bring the connection back up after being down
5247  * @vsi: the VSI being configured
5248  **/
5249 int i40e_up(struct i40e_vsi *vsi)
5250 {
5251         int err;
5252
5253         err = i40e_vsi_configure(vsi);
5254         if (!err)
5255                 err = i40e_up_complete(vsi);
5256
5257         return err;
5258 }
5259
5260 /**
5261  * i40e_down - Shutdown the connection processing
5262  * @vsi: the VSI being stopped
5263  **/
5264 void i40e_down(struct i40e_vsi *vsi)
5265 {
5266         int i;
5267
5268         /* It is assumed that the caller of this function
5269          * sets the vsi->state __I40E_DOWN bit.
5270          */
5271         if (vsi->netdev) {
5272                 netif_carrier_off(vsi->netdev);
5273                 netif_tx_disable(vsi->netdev);
5274         }
5275         i40e_vsi_disable_irq(vsi);
5276         i40e_vsi_control_rings(vsi, false);
5277         i40e_napi_disable_all(vsi);
5278
5279         for (i = 0; i < vsi->num_queue_pairs; i++) {
5280                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5281                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5282         }
5283 }
5284
5285 /**
5286  * i40e_setup_tc - configure multiple traffic classes
5287  * @netdev: net device to configure
5288  * @tc: number of traffic classes to enable
5289  **/
5290 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5291 {
5292         struct i40e_netdev_priv *np = netdev_priv(netdev);
5293         struct i40e_vsi *vsi = np->vsi;
5294         struct i40e_pf *pf = vsi->back;
5295         u8 enabled_tc = 0;
5296         int ret = -EINVAL;
5297         int i;
5298
5299         /* Check if DCB enabled to continue */
5300         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5301                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5302                 goto exit;
5303         }
5304
5305         /* Check if MFP enabled */
5306         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5307                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5308                 goto exit;
5309         }
5310
5311         /* Check whether tc count is within enabled limit */
5312         if (tc > i40e_pf_get_num_tc(pf)) {
5313                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5314                 goto exit;
5315         }
5316
5317         /* Generate TC map for number of tc requested */
5318         for (i = 0; i < tc; i++)
5319                 enabled_tc |= BIT(i);
5320
5321         /* Requesting same TC configuration as already enabled */
5322         if (enabled_tc == vsi->tc_config.enabled_tc)
5323                 return 0;
5324
5325         /* Quiesce VSI queues */
5326         i40e_quiesce_vsi(vsi);
5327
5328         /* Configure VSI for enabled TCs */
5329         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5330         if (ret) {
5331                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5332                             vsi->seid);
5333                 goto exit;
5334         }
5335
5336         /* Unquiesce VSI */
5337         i40e_unquiesce_vsi(vsi);
5338
5339 exit:
5340         return ret;
5341 }
5342
5343 #ifdef I40E_FCOE
5344 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5345                     struct tc_to_netdev *tc)
5346 #else
5347 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5348                            struct tc_to_netdev *tc)
5349 #endif
5350 {
5351         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5352                 return -EINVAL;
5353         return i40e_setup_tc(netdev, tc->tc);
5354 }
5355
5356 /**
5357  * i40e_open - Called when a network interface is made active
5358  * @netdev: network interface device structure
5359  *
5360  * The open entry point is called when a network interface is made
5361  * active by the system (IFF_UP).  At this point all resources needed
5362  * for transmit and receive operations are allocated, the interrupt
5363  * handler is registered with the OS, the netdev watchdog subtask is
5364  * enabled, and the stack is notified that the interface is ready.
5365  *
5366  * Returns 0 on success, negative value on failure
5367  **/
5368 int i40e_open(struct net_device *netdev)
5369 {
5370         struct i40e_netdev_priv *np = netdev_priv(netdev);
5371         struct i40e_vsi *vsi = np->vsi;
5372         struct i40e_pf *pf = vsi->back;
5373         int err;
5374
5375         /* disallow open during test or if eeprom is broken */
5376         if (test_bit(__I40E_TESTING, &pf->state) ||
5377             test_bit(__I40E_BAD_EEPROM, &pf->state))
5378                 return -EBUSY;
5379
5380         netif_carrier_off(netdev);
5381
5382         err = i40e_vsi_open(vsi);
5383         if (err)
5384                 return err;
5385
5386         /* configure global TSO hardware offload settings */
5387         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5388                                                        TCP_FLAG_FIN) >> 16);
5389         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5390                                                        TCP_FLAG_FIN |
5391                                                        TCP_FLAG_CWR) >> 16);
5392         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5393
5394 #ifdef CONFIG_I40E_VXLAN
5395         vxlan_get_rx_port(netdev);
5396 #endif
5397 #ifdef CONFIG_I40E_GENEVE
5398         if (pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE)
5399                 geneve_get_rx_port(netdev);
5400 #endif
5401
5402         i40e_notify_client_of_netdev_open(vsi);
5403
5404         return 0;
5405 }
5406
5407 /**
5408  * i40e_vsi_open -
5409  * @vsi: the VSI to open
5410  *
5411  * Finish initialization of the VSI.
5412  *
5413  * Returns 0 on success, negative value on failure
5414  **/
5415 int i40e_vsi_open(struct i40e_vsi *vsi)
5416 {
5417         struct i40e_pf *pf = vsi->back;
5418         char int_name[I40E_INT_NAME_STR_LEN];
5419         int err;
5420
5421         /* allocate descriptors */
5422         err = i40e_vsi_setup_tx_resources(vsi);
5423         if (err)
5424                 goto err_setup_tx;
5425         err = i40e_vsi_setup_rx_resources(vsi);
5426         if (err)
5427                 goto err_setup_rx;
5428
5429         err = i40e_vsi_configure(vsi);
5430         if (err)
5431                 goto err_setup_rx;
5432
5433         if (vsi->netdev) {
5434                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5435                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5436                 err = i40e_vsi_request_irq(vsi, int_name);
5437                 if (err)
5438                         goto err_setup_rx;
5439
5440                 /* Notify the stack of the actual queue counts. */
5441                 err = netif_set_real_num_tx_queues(vsi->netdev,
5442                                                    vsi->num_queue_pairs);
5443                 if (err)
5444                         goto err_set_queues;
5445
5446                 err = netif_set_real_num_rx_queues(vsi->netdev,
5447                                                    vsi->num_queue_pairs);
5448                 if (err)
5449                         goto err_set_queues;
5450
5451         } else if (vsi->type == I40E_VSI_FDIR) {
5452                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5453                          dev_driver_string(&pf->pdev->dev),
5454                          dev_name(&pf->pdev->dev));
5455                 err = i40e_vsi_request_irq(vsi, int_name);
5456
5457         } else {
5458                 err = -EINVAL;
5459                 goto err_setup_rx;
5460         }
5461
5462         err = i40e_up_complete(vsi);
5463         if (err)
5464                 goto err_up_complete;
5465
5466         return 0;
5467
5468 err_up_complete:
5469         i40e_down(vsi);
5470 err_set_queues:
5471         i40e_vsi_free_irq(vsi);
5472 err_setup_rx:
5473         i40e_vsi_free_rx_resources(vsi);
5474 err_setup_tx:
5475         i40e_vsi_free_tx_resources(vsi);
5476         if (vsi == pf->vsi[pf->lan_vsi])
5477                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5478
5479         return err;
5480 }
5481
5482 /**
5483  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5484  * @pf: Pointer to PF
5485  *
5486  * This function destroys the hlist where all the Flow Director
5487  * filters were saved.
5488  **/
5489 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5490 {
5491         struct i40e_fdir_filter *filter;
5492         struct hlist_node *node2;
5493
5494         hlist_for_each_entry_safe(filter, node2,
5495                                   &pf->fdir_filter_list, fdir_node) {
5496                 hlist_del(&filter->fdir_node);
5497                 kfree(filter);
5498         }
5499         pf->fdir_pf_active_filters = 0;
5500 }
5501
5502 /**
5503  * i40e_close - Disables a network interface
5504  * @netdev: network interface device structure
5505  *
5506  * The close entry point is called when an interface is de-activated
5507  * by the OS.  The hardware is still under the driver's control, but
5508  * this netdev interface is disabled.
5509  *
5510  * Returns 0, this is not allowed to fail
5511  **/
5512 #ifdef I40E_FCOE
5513 int i40e_close(struct net_device *netdev)
5514 #else
5515 static int i40e_close(struct net_device *netdev)
5516 #endif
5517 {
5518         struct i40e_netdev_priv *np = netdev_priv(netdev);
5519         struct i40e_vsi *vsi = np->vsi;
5520
5521         i40e_vsi_close(vsi);
5522
5523         return 0;
5524 }
5525
5526 /**
5527  * i40e_do_reset - Start a PF or Core Reset sequence
5528  * @pf: board private structure
5529  * @reset_flags: which reset is requested
5530  *
5531  * The essential difference in resets is that the PF Reset
5532  * doesn't clear the packet buffers, doesn't reset the PE
5533  * firmware, and doesn't bother the other PFs on the chip.
5534  **/
5535 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5536 {
5537         u32 val;
5538
5539         WARN_ON(in_interrupt());
5540
5541         if (i40e_check_asq_alive(&pf->hw))
5542                 i40e_vc_notify_reset(pf);
5543
5544         /* do the biggest reset indicated */
5545         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5546
5547                 /* Request a Global Reset
5548                  *
5549                  * This will start the chip's countdown to the actual full
5550                  * chip reset event, and a warning interrupt to be sent
5551                  * to all PFs, including the requestor.  Our handler
5552                  * for the warning interrupt will deal with the shutdown
5553                  * and recovery of the switch setup.
5554                  */
5555                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5556                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5557                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5558                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5559
5560         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5561
5562                 /* Request a Core Reset
5563                  *
5564                  * Same as Global Reset, except does *not* include the MAC/PHY
5565                  */
5566                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5567                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5568                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5569                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5570                 i40e_flush(&pf->hw);
5571
5572         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5573
5574                 /* Request a PF Reset
5575                  *
5576                  * Resets only the PF-specific registers
5577                  *
5578                  * This goes directly to the tear-down and rebuild of
5579                  * the switch, since we need to do all the recovery as
5580                  * for the Core Reset.
5581                  */
5582                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5583                 i40e_handle_reset_warning(pf);
5584
5585         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5586                 int v;
5587
5588                 /* Find the VSI(s) that requested a re-init */
5589                 dev_info(&pf->pdev->dev,
5590                          "VSI reinit requested\n");
5591                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5592                         struct i40e_vsi *vsi = pf->vsi[v];
5593
5594                         if (vsi != NULL &&
5595                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5596                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5597                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5598                         }
5599                 }
5600         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5601                 int v;
5602
5603                 /* Find the VSI(s) that needs to be brought down */
5604                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5605                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5606                         struct i40e_vsi *vsi = pf->vsi[v];
5607
5608                         if (vsi != NULL &&
5609                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5610                                 set_bit(__I40E_DOWN, &vsi->state);
5611                                 i40e_down(vsi);
5612                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5613                         }
5614                 }
5615         } else {
5616                 dev_info(&pf->pdev->dev,
5617                          "bad reset request 0x%08x\n", reset_flags);
5618         }
5619 }
5620
5621 #ifdef CONFIG_I40E_DCB
5622 /**
5623  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5624  * @pf: board private structure
5625  * @old_cfg: current DCB config
5626  * @new_cfg: new DCB config
5627  **/
5628 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5629                             struct i40e_dcbx_config *old_cfg,
5630                             struct i40e_dcbx_config *new_cfg)
5631 {
5632         bool need_reconfig = false;
5633
5634         /* Check if ETS configuration has changed */
5635         if (memcmp(&new_cfg->etscfg,
5636                    &old_cfg->etscfg,
5637                    sizeof(new_cfg->etscfg))) {
5638                 /* If Priority Table has changed reconfig is needed */
5639                 if (memcmp(&new_cfg->etscfg.prioritytable,
5640                            &old_cfg->etscfg.prioritytable,
5641                            sizeof(new_cfg->etscfg.prioritytable))) {
5642                         need_reconfig = true;
5643                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5644                 }
5645
5646                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5647                            &old_cfg->etscfg.tcbwtable,
5648                            sizeof(new_cfg->etscfg.tcbwtable)))
5649                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5650
5651                 if (memcmp(&new_cfg->etscfg.tsatable,
5652                            &old_cfg->etscfg.tsatable,
5653                            sizeof(new_cfg->etscfg.tsatable)))
5654                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5655         }
5656
5657         /* Check if PFC configuration has changed */
5658         if (memcmp(&new_cfg->pfc,
5659                    &old_cfg->pfc,
5660                    sizeof(new_cfg->pfc))) {
5661                 need_reconfig = true;
5662                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5663         }
5664
5665         /* Check if APP Table has changed */
5666         if (memcmp(&new_cfg->app,
5667                    &old_cfg->app,
5668                    sizeof(new_cfg->app))) {
5669                 need_reconfig = true;
5670                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5671         }
5672
5673         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5674         return need_reconfig;
5675 }
5676
5677 /**
5678  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5679  * @pf: board private structure
5680  * @e: event info posted on ARQ
5681  **/
5682 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5683                                   struct i40e_arq_event_info *e)
5684 {
5685         struct i40e_aqc_lldp_get_mib *mib =
5686                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5687         struct i40e_hw *hw = &pf->hw;
5688         struct i40e_dcbx_config tmp_dcbx_cfg;
5689         bool need_reconfig = false;
5690         int ret = 0;
5691         u8 type;
5692
5693         /* Not DCB capable or capability disabled */
5694         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5695                 return ret;
5696
5697         /* Ignore if event is not for Nearest Bridge */
5698         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5699                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5700         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5701         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5702                 return ret;
5703
5704         /* Check MIB Type and return if event for Remote MIB update */
5705         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5706         dev_dbg(&pf->pdev->dev,
5707                 "LLDP event mib type %s\n", type ? "remote" : "local");
5708         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5709                 /* Update the remote cached instance and return */
5710                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5711                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5712                                 &hw->remote_dcbx_config);
5713                 goto exit;
5714         }
5715
5716         /* Store the old configuration */
5717         tmp_dcbx_cfg = hw->local_dcbx_config;
5718
5719         /* Reset the old DCBx configuration data */
5720         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5721         /* Get updated DCBX data from firmware */
5722         ret = i40e_get_dcb_config(&pf->hw);
5723         if (ret) {
5724                 dev_info(&pf->pdev->dev,
5725                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5726                          i40e_stat_str(&pf->hw, ret),
5727                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5728                 goto exit;
5729         }
5730
5731         /* No change detected in DCBX configs */
5732         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5733                     sizeof(tmp_dcbx_cfg))) {
5734                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5735                 goto exit;
5736         }
5737
5738         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5739                                                &hw->local_dcbx_config);
5740
5741         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5742
5743         if (!need_reconfig)
5744                 goto exit;
5745
5746         /* Enable DCB tagging only when more than one TC */
5747         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5748                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5749         else
5750                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5751
5752         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5753         /* Reconfiguration needed quiesce all VSIs */
5754         i40e_pf_quiesce_all_vsi(pf);
5755
5756         /* Changes in configuration update VEB/VSI */
5757         i40e_dcb_reconfigure(pf);
5758
5759         ret = i40e_resume_port_tx(pf);
5760
5761         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5762         /* In case of error no point in resuming VSIs */
5763         if (ret)
5764                 goto exit;
5765
5766         /* Wait for the PF's queues to be disabled */
5767         ret = i40e_pf_wait_queues_disabled(pf);
5768         if (ret) {
5769                 /* Schedule PF reset to recover */
5770                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5771                 i40e_service_event_schedule(pf);
5772         } else {
5773                 i40e_pf_unquiesce_all_vsi(pf);
5774         }
5775
5776 exit:
5777         return ret;
5778 }
5779 #endif /* CONFIG_I40E_DCB */
5780
5781 /**
5782  * i40e_do_reset_safe - Protected reset path for userland calls.
5783  * @pf: board private structure
5784  * @reset_flags: which reset is requested
5785  *
5786  **/
5787 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5788 {
5789         rtnl_lock();
5790         i40e_do_reset(pf, reset_flags);
5791         rtnl_unlock();
5792 }
5793
5794 /**
5795  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5796  * @pf: board private structure
5797  * @e: event info posted on ARQ
5798  *
5799  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5800  * and VF queues
5801  **/
5802 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5803                                            struct i40e_arq_event_info *e)
5804 {
5805         struct i40e_aqc_lan_overflow *data =
5806                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5807         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5808         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5809         struct i40e_hw *hw = &pf->hw;
5810         struct i40e_vf *vf;
5811         u16 vf_id;
5812
5813         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5814                 queue, qtx_ctl);
5815
5816         /* Queue belongs to VF, find the VF and issue VF reset */
5817         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5818             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5819                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5820                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5821                 vf_id -= hw->func_caps.vf_base_id;
5822                 vf = &pf->vf[vf_id];
5823                 i40e_vc_notify_vf_reset(vf);
5824                 /* Allow VF to process pending reset notification */
5825                 msleep(20);
5826                 i40e_reset_vf(vf, false);
5827         }
5828 }
5829
5830 /**
5831  * i40e_service_event_complete - Finish up the service event
5832  * @pf: board private structure
5833  **/
5834 static void i40e_service_event_complete(struct i40e_pf *pf)
5835 {
5836         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5837
5838         /* flush memory to make sure state is correct before next watchog */
5839         smp_mb__before_atomic();
5840         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5841 }
5842
5843 /**
5844  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5845  * @pf: board private structure
5846  **/
5847 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5848 {
5849         u32 val, fcnt_prog;
5850
5851         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5852         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5853         return fcnt_prog;
5854 }
5855
5856 /**
5857  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5858  * @pf: board private structure
5859  **/
5860 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5861 {
5862         u32 val, fcnt_prog;
5863
5864         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5865         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5866                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5867                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5868         return fcnt_prog;
5869 }
5870
5871 /**
5872  * i40e_get_global_fd_count - Get total FD filters programmed on device
5873  * @pf: board private structure
5874  **/
5875 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5876 {
5877         u32 val, fcnt_prog;
5878
5879         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5880         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5881                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5882                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5883         return fcnt_prog;
5884 }
5885
5886 /**
5887  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5888  * @pf: board private structure
5889  **/
5890 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5891 {
5892         struct i40e_fdir_filter *filter;
5893         u32 fcnt_prog, fcnt_avail;
5894         struct hlist_node *node;
5895
5896         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5897                 return;
5898
5899         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5900          * to re-enable
5901          */
5902         fcnt_prog = i40e_get_global_fd_count(pf);
5903         fcnt_avail = pf->fdir_pf_filter_count;
5904         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5905             (pf->fd_add_err == 0) ||
5906             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5907                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5908                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5909                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5910                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5911                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5912                 }
5913         }
5914         /* Wait for some more space to be available to turn on ATR */
5915         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5916                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5917                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5918                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5919                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5920                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5921                 }
5922         }
5923
5924         /* if hw had a problem adding a filter, delete it */
5925         if (pf->fd_inv > 0) {
5926                 hlist_for_each_entry_safe(filter, node,
5927                                           &pf->fdir_filter_list, fdir_node) {
5928                         if (filter->fd_id == pf->fd_inv) {
5929                                 hlist_del(&filter->fdir_node);
5930                                 kfree(filter);
5931                                 pf->fdir_pf_active_filters--;
5932                         }
5933                 }
5934         }
5935 }
5936
5937 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5938 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5939 /**
5940  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5941  * @pf: board private structure
5942  **/
5943 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5944 {
5945         unsigned long min_flush_time;
5946         int flush_wait_retry = 50;
5947         bool disable_atr = false;
5948         int fd_room;
5949         int reg;
5950
5951         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5952                 return;
5953
5954         if (!time_after(jiffies, pf->fd_flush_timestamp +
5955                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5956                 return;
5957
5958         /* If the flush is happening too quick and we have mostly SB rules we
5959          * should not re-enable ATR for some time.
5960          */
5961         min_flush_time = pf->fd_flush_timestamp +
5962                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5963         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5964
5965         if (!(time_after(jiffies, min_flush_time)) &&
5966             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5967                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5968                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5969                 disable_atr = true;
5970         }
5971
5972         pf->fd_flush_timestamp = jiffies;
5973         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5974         /* flush all filters */
5975         wr32(&pf->hw, I40E_PFQF_CTL_1,
5976              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5977         i40e_flush(&pf->hw);
5978         pf->fd_flush_cnt++;
5979         pf->fd_add_err = 0;
5980         do {
5981                 /* Check FD flush status every 5-6msec */
5982                 usleep_range(5000, 6000);
5983                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5984                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5985                         break;
5986         } while (flush_wait_retry--);
5987         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5988                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5989         } else {
5990                 /* replay sideband filters */
5991                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5992                 if (!disable_atr)
5993                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5994                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5995                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5996                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5997         }
5998
5999 }
6000
6001 /**
6002  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6003  * @pf: board private structure
6004  **/
6005 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6006 {
6007         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6008 }
6009
6010 /* We can see up to 256 filter programming desc in transit if the filters are
6011  * being applied really fast; before we see the first
6012  * filter miss error on Rx queue 0. Accumulating enough error messages before
6013  * reacting will make sure we don't cause flush too often.
6014  */
6015 #define I40E_MAX_FD_PROGRAM_ERROR 256
6016
6017 /**
6018  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6019  * @pf: board private structure
6020  **/
6021 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6022 {
6023
6024         /* if interface is down do nothing */
6025         if (test_bit(__I40E_DOWN, &pf->state))
6026                 return;
6027
6028         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
6029                 return;
6030
6031         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6032                 i40e_fdir_flush_and_replay(pf);
6033
6034         i40e_fdir_check_and_reenable(pf);
6035
6036 }
6037
6038 /**
6039  * i40e_vsi_link_event - notify VSI of a link event
6040  * @vsi: vsi to be notified
6041  * @link_up: link up or down
6042  **/
6043 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6044 {
6045         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6046                 return;
6047
6048         switch (vsi->type) {
6049         case I40E_VSI_MAIN:
6050 #ifdef I40E_FCOE
6051         case I40E_VSI_FCOE:
6052 #endif
6053                 if (!vsi->netdev || !vsi->netdev_registered)
6054                         break;
6055
6056                 if (link_up) {
6057                         netif_carrier_on(vsi->netdev);
6058                         netif_tx_wake_all_queues(vsi->netdev);
6059                 } else {
6060                         netif_carrier_off(vsi->netdev);
6061                         netif_tx_stop_all_queues(vsi->netdev);
6062                 }
6063                 break;
6064
6065         case I40E_VSI_SRIOV:
6066         case I40E_VSI_VMDQ2:
6067         case I40E_VSI_CTRL:
6068         case I40E_VSI_IWARP:
6069         case I40E_VSI_MIRROR:
6070         default:
6071                 /* there is no notification for other VSIs */
6072                 break;
6073         }
6074 }
6075
6076 /**
6077  * i40e_veb_link_event - notify elements on the veb of a link event
6078  * @veb: veb to be notified
6079  * @link_up: link up or down
6080  **/
6081 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6082 {
6083         struct i40e_pf *pf;
6084         int i;
6085
6086         if (!veb || !veb->pf)
6087                 return;
6088         pf = veb->pf;
6089
6090         /* depth first... */
6091         for (i = 0; i < I40E_MAX_VEB; i++)
6092                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6093                         i40e_veb_link_event(pf->veb[i], link_up);
6094
6095         /* ... now the local VSIs */
6096         for (i = 0; i < pf->num_alloc_vsi; i++)
6097                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6098                         i40e_vsi_link_event(pf->vsi[i], link_up);
6099 }
6100
6101 /**
6102  * i40e_link_event - Update netif_carrier status
6103  * @pf: board private structure
6104  **/
6105 static void i40e_link_event(struct i40e_pf *pf)
6106 {
6107         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6108         u8 new_link_speed, old_link_speed;
6109         i40e_status status;
6110         bool new_link, old_link;
6111
6112         /* save off old link status information */
6113         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6114
6115         /* set this to force the get_link_status call to refresh state */
6116         pf->hw.phy.get_link_info = true;
6117
6118         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6119
6120         status = i40e_get_link_status(&pf->hw, &new_link);
6121         if (status) {
6122                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6123                         status);
6124                 return;
6125         }
6126
6127         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6128         new_link_speed = pf->hw.phy.link_info.link_speed;
6129
6130         if (new_link == old_link &&
6131             new_link_speed == old_link_speed &&
6132             (test_bit(__I40E_DOWN, &vsi->state) ||
6133              new_link == netif_carrier_ok(vsi->netdev)))
6134                 return;
6135
6136         if (!test_bit(__I40E_DOWN, &vsi->state))
6137                 i40e_print_link_message(vsi, new_link);
6138
6139         /* Notify the base of the switch tree connected to
6140          * the link.  Floating VEBs are not notified.
6141          */
6142         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6143                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6144         else
6145                 i40e_vsi_link_event(vsi, new_link);
6146
6147         if (pf->vf)
6148                 i40e_vc_notify_link_state(pf);
6149
6150         if (pf->flags & I40E_FLAG_PTP)
6151                 i40e_ptp_set_increment(pf);
6152 }
6153
6154 /**
6155  * i40e_watchdog_subtask - periodic checks not using event driven response
6156  * @pf: board private structure
6157  **/
6158 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6159 {
6160         int i;
6161
6162         /* if interface is down do nothing */
6163         if (test_bit(__I40E_DOWN, &pf->state) ||
6164             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6165                 return;
6166
6167         /* make sure we don't do these things too often */
6168         if (time_before(jiffies, (pf->service_timer_previous +
6169                                   pf->service_timer_period)))
6170                 return;
6171         pf->service_timer_previous = jiffies;
6172
6173         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6174                 i40e_link_event(pf);
6175
6176         /* Update the stats for active netdevs so the network stack
6177          * can look at updated numbers whenever it cares to
6178          */
6179         for (i = 0; i < pf->num_alloc_vsi; i++)
6180                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6181                         i40e_update_stats(pf->vsi[i]);
6182
6183         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6184                 /* Update the stats for the active switching components */
6185                 for (i = 0; i < I40E_MAX_VEB; i++)
6186                         if (pf->veb[i])
6187                                 i40e_update_veb_stats(pf->veb[i]);
6188         }
6189
6190         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6191 }
6192
6193 /**
6194  * i40e_reset_subtask - Set up for resetting the device and driver
6195  * @pf: board private structure
6196  **/
6197 static void i40e_reset_subtask(struct i40e_pf *pf)
6198 {
6199         u32 reset_flags = 0;
6200
6201         rtnl_lock();
6202         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6203                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6204                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6205         }
6206         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6207                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6208                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6209         }
6210         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6211                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6212                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6213         }
6214         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6215                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6216                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6217         }
6218         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6219                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6220                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6221         }
6222
6223         /* If there's a recovery already waiting, it takes
6224          * precedence before starting a new reset sequence.
6225          */
6226         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6227                 i40e_handle_reset_warning(pf);
6228                 goto unlock;
6229         }
6230
6231         /* If we're already down or resetting, just bail */
6232         if (reset_flags &&
6233             !test_bit(__I40E_DOWN, &pf->state) &&
6234             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6235                 i40e_do_reset(pf, reset_flags);
6236
6237 unlock:
6238         rtnl_unlock();
6239 }
6240
6241 /**
6242  * i40e_handle_link_event - Handle link event
6243  * @pf: board private structure
6244  * @e: event info posted on ARQ
6245  **/
6246 static void i40e_handle_link_event(struct i40e_pf *pf,
6247                                    struct i40e_arq_event_info *e)
6248 {
6249         struct i40e_aqc_get_link_status *status =
6250                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6251
6252         /* Do a new status request to re-enable LSE reporting
6253          * and load new status information into the hw struct
6254          * This completely ignores any state information
6255          * in the ARQ event info, instead choosing to always
6256          * issue the AQ update link status command.
6257          */
6258         i40e_link_event(pf);
6259
6260         /* check for unqualified module, if link is down */
6261         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6262             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6263             (!(status->link_info & I40E_AQ_LINK_UP)))
6264                 dev_err(&pf->pdev->dev,
6265                         "The driver failed to link because an unqualified module was detected.\n");
6266 }
6267
6268 /**
6269  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6270  * @pf: board private structure
6271  **/
6272 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6273 {
6274         struct i40e_arq_event_info event;
6275         struct i40e_hw *hw = &pf->hw;
6276         u16 pending, i = 0;
6277         i40e_status ret;
6278         u16 opcode;
6279         u32 oldval;
6280         u32 val;
6281
6282         /* Do not run clean AQ when PF reset fails */
6283         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6284                 return;
6285
6286         /* check for error indications */
6287         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6288         oldval = val;
6289         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6290                 if (hw->debug_mask & I40E_DEBUG_AQ)
6291                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6292                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6293         }
6294         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6295                 if (hw->debug_mask & I40E_DEBUG_AQ)
6296                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6297                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6298                 pf->arq_overflows++;
6299         }
6300         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6301                 if (hw->debug_mask & I40E_DEBUG_AQ)
6302                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6303                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6304         }
6305         if (oldval != val)
6306                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6307
6308         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6309         oldval = val;
6310         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6311                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6312                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6313                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6314         }
6315         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6316                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6317                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6318                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6319         }
6320         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6321                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6322                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6323                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6324         }
6325         if (oldval != val)
6326                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6327
6328         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6329         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6330         if (!event.msg_buf)
6331                 return;
6332
6333         do {
6334                 ret = i40e_clean_arq_element(hw, &event, &pending);
6335                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6336                         break;
6337                 else if (ret) {
6338                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6339                         break;
6340                 }
6341
6342                 opcode = le16_to_cpu(event.desc.opcode);
6343                 switch (opcode) {
6344
6345                 case i40e_aqc_opc_get_link_status:
6346                         i40e_handle_link_event(pf, &event);
6347                         break;
6348                 case i40e_aqc_opc_send_msg_to_pf:
6349                         ret = i40e_vc_process_vf_msg(pf,
6350                                         le16_to_cpu(event.desc.retval),
6351                                         le32_to_cpu(event.desc.cookie_high),
6352                                         le32_to_cpu(event.desc.cookie_low),
6353                                         event.msg_buf,
6354                                         event.msg_len);
6355                         break;
6356                 case i40e_aqc_opc_lldp_update_mib:
6357                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6358 #ifdef CONFIG_I40E_DCB
6359                         rtnl_lock();
6360                         ret = i40e_handle_lldp_event(pf, &event);
6361                         rtnl_unlock();
6362 #endif /* CONFIG_I40E_DCB */
6363                         break;
6364                 case i40e_aqc_opc_event_lan_overflow:
6365                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6366                         i40e_handle_lan_overflow_event(pf, &event);
6367                         break;
6368                 case i40e_aqc_opc_send_msg_to_peer:
6369                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6370                         break;
6371                 case i40e_aqc_opc_nvm_erase:
6372                 case i40e_aqc_opc_nvm_update:
6373                 case i40e_aqc_opc_oem_post_update:
6374                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6375                                    "ARQ NVM operation 0x%04x completed\n",
6376                                    opcode);
6377                         break;
6378                 default:
6379                         dev_info(&pf->pdev->dev,
6380                                  "ARQ Error: Unknown event 0x%04x received\n",
6381                                  opcode);
6382                         break;
6383                 }
6384         } while (pending && (i++ < pf->adminq_work_limit));
6385
6386         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6387         /* re-enable Admin queue interrupt cause */
6388         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6389         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6390         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6391         i40e_flush(hw);
6392
6393         kfree(event.msg_buf);
6394 }
6395
6396 /**
6397  * i40e_verify_eeprom - make sure eeprom is good to use
6398  * @pf: board private structure
6399  **/
6400 static void i40e_verify_eeprom(struct i40e_pf *pf)
6401 {
6402         int err;
6403
6404         err = i40e_diag_eeprom_test(&pf->hw);
6405         if (err) {
6406                 /* retry in case of garbage read */
6407                 err = i40e_diag_eeprom_test(&pf->hw);
6408                 if (err) {
6409                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6410                                  err);
6411                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6412                 }
6413         }
6414
6415         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6416                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6417                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6418         }
6419 }
6420
6421 /**
6422  * i40e_enable_pf_switch_lb
6423  * @pf: pointer to the PF structure
6424  *
6425  * enable switch loop back or die - no point in a return value
6426  **/
6427 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6428 {
6429         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6430         struct i40e_vsi_context ctxt;
6431         int ret;
6432
6433         ctxt.seid = pf->main_vsi_seid;
6434         ctxt.pf_num = pf->hw.pf_id;
6435         ctxt.vf_num = 0;
6436         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6437         if (ret) {
6438                 dev_info(&pf->pdev->dev,
6439                          "couldn't get PF vsi config, err %s aq_err %s\n",
6440                          i40e_stat_str(&pf->hw, ret),
6441                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6442                 return;
6443         }
6444         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6445         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6446         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6447
6448         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6449         if (ret) {
6450                 dev_info(&pf->pdev->dev,
6451                          "update vsi switch failed, err %s aq_err %s\n",
6452                          i40e_stat_str(&pf->hw, ret),
6453                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6454         }
6455 }
6456
6457 /**
6458  * i40e_disable_pf_switch_lb
6459  * @pf: pointer to the PF structure
6460  *
6461  * disable switch loop back or die - no point in a return value
6462  **/
6463 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6464 {
6465         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6466         struct i40e_vsi_context ctxt;
6467         int ret;
6468
6469         ctxt.seid = pf->main_vsi_seid;
6470         ctxt.pf_num = pf->hw.pf_id;
6471         ctxt.vf_num = 0;
6472         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6473         if (ret) {
6474                 dev_info(&pf->pdev->dev,
6475                          "couldn't get PF vsi config, err %s aq_err %s\n",
6476                          i40e_stat_str(&pf->hw, ret),
6477                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6478                 return;
6479         }
6480         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6481         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6482         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6483
6484         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6485         if (ret) {
6486                 dev_info(&pf->pdev->dev,
6487                          "update vsi switch failed, err %s aq_err %s\n",
6488                          i40e_stat_str(&pf->hw, ret),
6489                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6490         }
6491 }
6492
6493 /**
6494  * i40e_config_bridge_mode - Configure the HW bridge mode
6495  * @veb: pointer to the bridge instance
6496  *
6497  * Configure the loop back mode for the LAN VSI that is downlink to the
6498  * specified HW bridge instance. It is expected this function is called
6499  * when a new HW bridge is instantiated.
6500  **/
6501 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6502 {
6503         struct i40e_pf *pf = veb->pf;
6504
6505         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6506                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6507                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6508         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6509                 i40e_disable_pf_switch_lb(pf);
6510         else
6511                 i40e_enable_pf_switch_lb(pf);
6512 }
6513
6514 /**
6515  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6516  * @veb: pointer to the VEB instance
6517  *
6518  * This is a recursive function that first builds the attached VSIs then
6519  * recurses in to build the next layer of VEB.  We track the connections
6520  * through our own index numbers because the seid's from the HW could
6521  * change across the reset.
6522  **/
6523 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6524 {
6525         struct i40e_vsi *ctl_vsi = NULL;
6526         struct i40e_pf *pf = veb->pf;
6527         int v, veb_idx;
6528         int ret;
6529
6530         /* build VSI that owns this VEB, temporarily attached to base VEB */
6531         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6532                 if (pf->vsi[v] &&
6533                     pf->vsi[v]->veb_idx == veb->idx &&
6534                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6535                         ctl_vsi = pf->vsi[v];
6536                         break;
6537                 }
6538         }
6539         if (!ctl_vsi) {
6540                 dev_info(&pf->pdev->dev,
6541                          "missing owner VSI for veb_idx %d\n", veb->idx);
6542                 ret = -ENOENT;
6543                 goto end_reconstitute;
6544         }
6545         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6546                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6547         ret = i40e_add_vsi(ctl_vsi);
6548         if (ret) {
6549                 dev_info(&pf->pdev->dev,
6550                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6551                          veb->idx, ret);
6552                 goto end_reconstitute;
6553         }
6554         i40e_vsi_reset_stats(ctl_vsi);
6555
6556         /* create the VEB in the switch and move the VSI onto the VEB */
6557         ret = i40e_add_veb(veb, ctl_vsi);
6558         if (ret)
6559                 goto end_reconstitute;
6560
6561         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6562                 veb->bridge_mode = BRIDGE_MODE_VEB;
6563         else
6564                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6565         i40e_config_bridge_mode(veb);
6566
6567         /* create the remaining VSIs attached to this VEB */
6568         for (v = 0; v < pf->num_alloc_vsi; v++) {
6569                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6570                         continue;
6571
6572                 if (pf->vsi[v]->veb_idx == veb->idx) {
6573                         struct i40e_vsi *vsi = pf->vsi[v];
6574
6575                         vsi->uplink_seid = veb->seid;
6576                         ret = i40e_add_vsi(vsi);
6577                         if (ret) {
6578                                 dev_info(&pf->pdev->dev,
6579                                          "rebuild of vsi_idx %d failed: %d\n",
6580                                          v, ret);
6581                                 goto end_reconstitute;
6582                         }
6583                         i40e_vsi_reset_stats(vsi);
6584                 }
6585         }
6586
6587         /* create any VEBs attached to this VEB - RECURSION */
6588         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6589                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6590                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6591                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6592                         if (ret)
6593                                 break;
6594                 }
6595         }
6596
6597 end_reconstitute:
6598         return ret;
6599 }
6600
6601 /**
6602  * i40e_get_capabilities - get info about the HW
6603  * @pf: the PF struct
6604  **/
6605 static int i40e_get_capabilities(struct i40e_pf *pf)
6606 {
6607         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6608         u16 data_size;
6609         int buf_len;
6610         int err;
6611
6612         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6613         do {
6614                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6615                 if (!cap_buf)
6616                         return -ENOMEM;
6617
6618                 /* this loads the data into the hw struct for us */
6619                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6620                                             &data_size,
6621                                             i40e_aqc_opc_list_func_capabilities,
6622                                             NULL);
6623                 /* data loaded, buffer no longer needed */
6624                 kfree(cap_buf);
6625
6626                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6627                         /* retry with a larger buffer */
6628                         buf_len = data_size;
6629                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6630                         dev_info(&pf->pdev->dev,
6631                                  "capability discovery failed, err %s aq_err %s\n",
6632                                  i40e_stat_str(&pf->hw, err),
6633                                  i40e_aq_str(&pf->hw,
6634                                              pf->hw.aq.asq_last_status));
6635                         return -ENODEV;
6636                 }
6637         } while (err);
6638
6639         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6640                 dev_info(&pf->pdev->dev,
6641                          "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",
6642                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6643                          pf->hw.func_caps.num_msix_vectors,
6644                          pf->hw.func_caps.num_msix_vectors_vf,
6645                          pf->hw.func_caps.fd_filters_guaranteed,
6646                          pf->hw.func_caps.fd_filters_best_effort,
6647                          pf->hw.func_caps.num_tx_qp,
6648                          pf->hw.func_caps.num_vsis);
6649
6650 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6651                        + pf->hw.func_caps.num_vfs)
6652         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6653                 dev_info(&pf->pdev->dev,
6654                          "got num_vsis %d, setting num_vsis to %d\n",
6655                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6656                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6657         }
6658
6659         return 0;
6660 }
6661
6662 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6663
6664 /**
6665  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6666  * @pf: board private structure
6667  **/
6668 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6669 {
6670         struct i40e_vsi *vsi;
6671         int i;
6672
6673         /* quick workaround for an NVM issue that leaves a critical register
6674          * uninitialized
6675          */
6676         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6677                 static const u32 hkey[] = {
6678                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6679                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6680                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6681                         0x95b3a76d};
6682
6683                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6684                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6685         }
6686
6687         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6688                 return;
6689
6690         /* find existing VSI and see if it needs configuring */
6691         vsi = NULL;
6692         for (i = 0; i < pf->num_alloc_vsi; i++) {
6693                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6694                         vsi = pf->vsi[i];
6695                         break;
6696                 }
6697         }
6698
6699         /* create a new VSI if none exists */
6700         if (!vsi) {
6701                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6702                                      pf->vsi[pf->lan_vsi]->seid, 0);
6703                 if (!vsi) {
6704                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6705                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6706                         return;
6707                 }
6708         }
6709
6710         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6711 }
6712
6713 /**
6714  * i40e_fdir_teardown - release the Flow Director resources
6715  * @pf: board private structure
6716  **/
6717 static void i40e_fdir_teardown(struct i40e_pf *pf)
6718 {
6719         int i;
6720
6721         i40e_fdir_filter_exit(pf);
6722         for (i = 0; i < pf->num_alloc_vsi; i++) {
6723                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6724                         i40e_vsi_release(pf->vsi[i]);
6725                         break;
6726                 }
6727         }
6728 }
6729
6730 /**
6731  * i40e_prep_for_reset - prep for the core to reset
6732  * @pf: board private structure
6733  *
6734  * Close up the VFs and other things in prep for PF Reset.
6735   **/
6736 static void i40e_prep_for_reset(struct i40e_pf *pf)
6737 {
6738         struct i40e_hw *hw = &pf->hw;
6739         i40e_status ret = 0;
6740         u32 v;
6741
6742         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6743         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6744                 return;
6745
6746         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6747
6748         /* quiesce the VSIs and their queues that are not already DOWN */
6749         i40e_pf_quiesce_all_vsi(pf);
6750
6751         for (v = 0; v < pf->num_alloc_vsi; v++) {
6752                 if (pf->vsi[v])
6753                         pf->vsi[v]->seid = 0;
6754         }
6755
6756         i40e_shutdown_adminq(&pf->hw);
6757
6758         /* call shutdown HMC */
6759         if (hw->hmc.hmc_obj) {
6760                 ret = i40e_shutdown_lan_hmc(hw);
6761                 if (ret)
6762                         dev_warn(&pf->pdev->dev,
6763                                  "shutdown_lan_hmc failed: %d\n", ret);
6764         }
6765 }
6766
6767 /**
6768  * i40e_send_version - update firmware with driver version
6769  * @pf: PF struct
6770  */
6771 static void i40e_send_version(struct i40e_pf *pf)
6772 {
6773         struct i40e_driver_version dv;
6774
6775         dv.major_version = DRV_VERSION_MAJOR;
6776         dv.minor_version = DRV_VERSION_MINOR;
6777         dv.build_version = DRV_VERSION_BUILD;
6778         dv.subbuild_version = 0;
6779         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6780         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6781 }
6782
6783 /**
6784  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6785  * @pf: board private structure
6786  * @reinit: if the Main VSI needs to re-initialized.
6787  **/
6788 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6789 {
6790         struct i40e_hw *hw = &pf->hw;
6791         u8 set_fc_aq_fail = 0;
6792         i40e_status ret;
6793         u32 val;
6794         u32 v;
6795
6796         /* Now we wait for GRST to settle out.
6797          * We don't have to delete the VEBs or VSIs from the hw switch
6798          * because the reset will make them disappear.
6799          */
6800         ret = i40e_pf_reset(hw);
6801         if (ret) {
6802                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6803                 set_bit(__I40E_RESET_FAILED, &pf->state);
6804                 goto clear_recovery;
6805         }
6806         pf->pfr_count++;
6807
6808         if (test_bit(__I40E_DOWN, &pf->state))
6809                 goto clear_recovery;
6810         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6811
6812         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6813         ret = i40e_init_adminq(&pf->hw);
6814         if (ret) {
6815                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6816                          i40e_stat_str(&pf->hw, ret),
6817                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6818                 goto clear_recovery;
6819         }
6820
6821         /* re-verify the eeprom if we just had an EMP reset */
6822         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6823                 i40e_verify_eeprom(pf);
6824
6825         i40e_clear_pxe_mode(hw);
6826         ret = i40e_get_capabilities(pf);
6827         if (ret)
6828                 goto end_core_reset;
6829
6830         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6831                                 hw->func_caps.num_rx_qp,
6832                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6833         if (ret) {
6834                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6835                 goto end_core_reset;
6836         }
6837         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6838         if (ret) {
6839                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6840                 goto end_core_reset;
6841         }
6842
6843 #ifdef CONFIG_I40E_DCB
6844         ret = i40e_init_pf_dcb(pf);
6845         if (ret) {
6846                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6847                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6848                 /* Continue without DCB enabled */
6849         }
6850 #endif /* CONFIG_I40E_DCB */
6851 #ifdef I40E_FCOE
6852         i40e_init_pf_fcoe(pf);
6853
6854 #endif
6855         /* do basic switch setup */
6856         ret = i40e_setup_pf_switch(pf, reinit);
6857         if (ret)
6858                 goto end_core_reset;
6859
6860         /* The driver only wants link up/down and module qualification
6861          * reports from firmware.  Note the negative logic.
6862          */
6863         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6864                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6865                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6866         if (ret)
6867                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6868                          i40e_stat_str(&pf->hw, ret),
6869                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6870
6871         /* make sure our flow control settings are restored */
6872         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6873         if (ret)
6874                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6875                         i40e_stat_str(&pf->hw, ret),
6876                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6877
6878         /* Rebuild the VSIs and VEBs that existed before reset.
6879          * They are still in our local switch element arrays, so only
6880          * need to rebuild the switch model in the HW.
6881          *
6882          * If there were VEBs but the reconstitution failed, we'll try
6883          * try to recover minimal use by getting the basic PF VSI working.
6884          */
6885         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6886                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6887                 /* find the one VEB connected to the MAC, and find orphans */
6888                 for (v = 0; v < I40E_MAX_VEB; v++) {
6889                         if (!pf->veb[v])
6890                                 continue;
6891
6892                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6893                             pf->veb[v]->uplink_seid == 0) {
6894                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6895
6896                                 if (!ret)
6897                                         continue;
6898
6899                                 /* If Main VEB failed, we're in deep doodoo,
6900                                  * so give up rebuilding the switch and set up
6901                                  * for minimal rebuild of PF VSI.
6902                                  * If orphan failed, we'll report the error
6903                                  * but try to keep going.
6904                                  */
6905                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6906                                         dev_info(&pf->pdev->dev,
6907                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6908                                                  ret);
6909                                         pf->vsi[pf->lan_vsi]->uplink_seid
6910                                                                 = pf->mac_seid;
6911                                         break;
6912                                 } else if (pf->veb[v]->uplink_seid == 0) {
6913                                         dev_info(&pf->pdev->dev,
6914                                                  "rebuild of orphan VEB failed: %d\n",
6915                                                  ret);
6916                                 }
6917                         }
6918                 }
6919         }
6920
6921         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6922                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6923                 /* no VEB, so rebuild only the Main VSI */
6924                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6925                 if (ret) {
6926                         dev_info(&pf->pdev->dev,
6927                                  "rebuild of Main VSI failed: %d\n", ret);
6928                         goto end_core_reset;
6929                 }
6930         }
6931
6932         /* Reconfigure hardware for allowing smaller MSS in the case
6933          * of TSO, so that we avoid the MDD being fired and causing
6934          * a reset in the case of small MSS+TSO.
6935          */
6936 #define I40E_REG_MSS          0x000E64DC
6937 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6938 #define I40E_64BYTE_MSS       0x400000
6939         val = rd32(hw, I40E_REG_MSS);
6940         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6941                 val &= ~I40E_REG_MSS_MIN_MASK;
6942                 val |= I40E_64BYTE_MSS;
6943                 wr32(hw, I40E_REG_MSS, val);
6944         }
6945
6946         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6947                 msleep(75);
6948                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6949                 if (ret)
6950                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6951                                  i40e_stat_str(&pf->hw, ret),
6952                                  i40e_aq_str(&pf->hw,
6953                                              pf->hw.aq.asq_last_status));
6954         }
6955         /* reinit the misc interrupt */
6956         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6957                 ret = i40e_setup_misc_vector(pf);
6958
6959         /* Add a filter to drop all Flow control frames from any VSI from being
6960          * transmitted. By doing so we stop a malicious VF from sending out
6961          * PAUSE or PFC frames and potentially controlling traffic for other
6962          * PF/VF VSIs.
6963          * The FW can still send Flow control frames if enabled.
6964          */
6965         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6966                                                        pf->main_vsi_seid);
6967
6968         /* restart the VSIs that were rebuilt and running before the reset */
6969         i40e_pf_unquiesce_all_vsi(pf);
6970
6971         if (pf->num_alloc_vfs) {
6972                 for (v = 0; v < pf->num_alloc_vfs; v++)
6973                         i40e_reset_vf(&pf->vf[v], true);
6974         }
6975
6976         /* tell the firmware that we're starting */
6977         i40e_send_version(pf);
6978
6979 end_core_reset:
6980         clear_bit(__I40E_RESET_FAILED, &pf->state);
6981 clear_recovery:
6982         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6983 }
6984
6985 /**
6986  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6987  * @pf: board private structure
6988  *
6989  * Close up the VFs and other things in prep for a Core Reset,
6990  * then get ready to rebuild the world.
6991  **/
6992 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6993 {
6994         i40e_prep_for_reset(pf);
6995         i40e_reset_and_rebuild(pf, false);
6996 }
6997
6998 /**
6999  * i40e_handle_mdd_event
7000  * @pf: pointer to the PF structure
7001  *
7002  * Called from the MDD irq handler to identify possibly malicious vfs
7003  **/
7004 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7005 {
7006         struct i40e_hw *hw = &pf->hw;
7007         bool mdd_detected = false;
7008         bool pf_mdd_detected = false;
7009         struct i40e_vf *vf;
7010         u32 reg;
7011         int i;
7012
7013         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7014                 return;
7015
7016         /* find what triggered the MDD event */
7017         reg = rd32(hw, I40E_GL_MDET_TX);
7018         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7019                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7020                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7021                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7022                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7023                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7024                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7025                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7026                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7027                                 pf->hw.func_caps.base_queue;
7028                 if (netif_msg_tx_err(pf))
7029                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7030                                  event, queue, pf_num, vf_num);
7031                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7032                 mdd_detected = true;
7033         }
7034         reg = rd32(hw, I40E_GL_MDET_RX);
7035         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7036                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7037                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7038                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7039                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7040                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7041                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7042                                 pf->hw.func_caps.base_queue;
7043                 if (netif_msg_rx_err(pf))
7044                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7045                                  event, queue, func);
7046                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7047                 mdd_detected = true;
7048         }
7049
7050         if (mdd_detected) {
7051                 reg = rd32(hw, I40E_PF_MDET_TX);
7052                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7053                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7054                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7055                         pf_mdd_detected = true;
7056                 }
7057                 reg = rd32(hw, I40E_PF_MDET_RX);
7058                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7059                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7060                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7061                         pf_mdd_detected = true;
7062                 }
7063                 /* Queue belongs to the PF, initiate a reset */
7064                 if (pf_mdd_detected) {
7065                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7066                         i40e_service_event_schedule(pf);
7067                 }
7068         }
7069
7070         /* see if one of the VFs needs its hand slapped */
7071         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7072                 vf = &(pf->vf[i]);
7073                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7074                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7075                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7076                         vf->num_mdd_events++;
7077                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7078                                  i);
7079                 }
7080
7081                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7082                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7083                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7084                         vf->num_mdd_events++;
7085                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7086                                  i);
7087                 }
7088
7089                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7090                         dev_info(&pf->pdev->dev,
7091                                  "Too many MDD events on VF %d, disabled\n", i);
7092                         dev_info(&pf->pdev->dev,
7093                                  "Use PF Control I/F to re-enable the VF\n");
7094                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7095                 }
7096         }
7097
7098         /* re-enable mdd interrupt cause */
7099         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7100         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7101         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7102         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7103         i40e_flush(hw);
7104 }
7105
7106 /**
7107  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7108  * @pf: board private structure
7109  **/
7110 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7111 {
7112 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
7113         struct i40e_hw *hw = &pf->hw;
7114         i40e_status ret;
7115         __be16 port;
7116         int i;
7117
7118         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7119                 return;
7120
7121         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7122
7123         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7124                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7125                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7126                         port = pf->udp_ports[i].index;
7127                         if (port)
7128                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7129                                                      pf->udp_ports[i].type,
7130                                                      NULL, NULL);
7131                         else
7132                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7133
7134                         if (ret) {
7135                                 dev_dbg(&pf->pdev->dev,
7136                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7137                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7138                                         port ? "add" : "delete",
7139                                         ntohs(port), i,
7140                                         i40e_stat_str(&pf->hw, ret),
7141                                         i40e_aq_str(&pf->hw,
7142                                                     pf->hw.aq.asq_last_status));
7143                                 pf->udp_ports[i].index = 0;
7144                         }
7145                 }
7146         }
7147 #endif
7148 }
7149
7150 /**
7151  * i40e_service_task - Run the driver's async subtasks
7152  * @work: pointer to work_struct containing our data
7153  **/
7154 static void i40e_service_task(struct work_struct *work)
7155 {
7156         struct i40e_pf *pf = container_of(work,
7157                                           struct i40e_pf,
7158                                           service_task);
7159         unsigned long start_time = jiffies;
7160
7161         /* don't bother with service tasks if a reset is in progress */
7162         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7163                 i40e_service_event_complete(pf);
7164                 return;
7165         }
7166
7167         i40e_detect_recover_hung(pf);
7168         i40e_sync_filters_subtask(pf);
7169         i40e_reset_subtask(pf);
7170         i40e_handle_mdd_event(pf);
7171         i40e_vc_process_vflr_event(pf);
7172         i40e_watchdog_subtask(pf);
7173         i40e_fdir_reinit_subtask(pf);
7174         i40e_client_subtask(pf);
7175         i40e_sync_filters_subtask(pf);
7176         i40e_sync_udp_filters_subtask(pf);
7177         i40e_clean_adminq_subtask(pf);
7178
7179         i40e_service_event_complete(pf);
7180
7181         /* If the tasks have taken longer than one timer cycle or there
7182          * is more work to be done, reschedule the service task now
7183          * rather than wait for the timer to tick again.
7184          */
7185         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7186             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7187             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7188             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7189                 i40e_service_event_schedule(pf);
7190 }
7191
7192 /**
7193  * i40e_service_timer - timer callback
7194  * @data: pointer to PF struct
7195  **/
7196 static void i40e_service_timer(unsigned long data)
7197 {
7198         struct i40e_pf *pf = (struct i40e_pf *)data;
7199
7200         mod_timer(&pf->service_timer,
7201                   round_jiffies(jiffies + pf->service_timer_period));
7202         i40e_service_event_schedule(pf);
7203 }
7204
7205 /**
7206  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7207  * @vsi: the VSI being configured
7208  **/
7209 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7210 {
7211         struct i40e_pf *pf = vsi->back;
7212
7213         switch (vsi->type) {
7214         case I40E_VSI_MAIN:
7215                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7216                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7217                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7218                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7219                         vsi->num_q_vectors = pf->num_lan_msix;
7220                 else
7221                         vsi->num_q_vectors = 1;
7222
7223                 break;
7224
7225         case I40E_VSI_FDIR:
7226                 vsi->alloc_queue_pairs = 1;
7227                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7228                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7229                 vsi->num_q_vectors = 1;
7230                 break;
7231
7232         case I40E_VSI_VMDQ2:
7233                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7234                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7235                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7236                 vsi->num_q_vectors = pf->num_vmdq_msix;
7237                 break;
7238
7239         case I40E_VSI_SRIOV:
7240                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7241                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7242                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7243                 break;
7244
7245 #ifdef I40E_FCOE
7246         case I40E_VSI_FCOE:
7247                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7248                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7249                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7250                 vsi->num_q_vectors = pf->num_fcoe_msix;
7251                 break;
7252
7253 #endif /* I40E_FCOE */
7254         default:
7255                 WARN_ON(1);
7256                 return -ENODATA;
7257         }
7258
7259         return 0;
7260 }
7261
7262 /**
7263  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7264  * @type: VSI pointer
7265  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7266  *
7267  * On error: returns error code (negative)
7268  * On success: returns 0
7269  **/
7270 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7271 {
7272         int size;
7273         int ret = 0;
7274
7275         /* allocate memory for both Tx and Rx ring pointers */
7276         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7277         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7278         if (!vsi->tx_rings)
7279                 return -ENOMEM;
7280         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7281
7282         if (alloc_qvectors) {
7283                 /* allocate memory for q_vector pointers */
7284                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7285                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7286                 if (!vsi->q_vectors) {
7287                         ret = -ENOMEM;
7288                         goto err_vectors;
7289                 }
7290         }
7291         return ret;
7292
7293 err_vectors:
7294         kfree(vsi->tx_rings);
7295         return ret;
7296 }
7297
7298 /**
7299  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7300  * @pf: board private structure
7301  * @type: type of VSI
7302  *
7303  * On error: returns error code (negative)
7304  * On success: returns vsi index in PF (positive)
7305  **/
7306 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7307 {
7308         int ret = -ENODEV;
7309         struct i40e_vsi *vsi;
7310         int vsi_idx;
7311         int i;
7312
7313         /* Need to protect the allocation of the VSIs at the PF level */
7314         mutex_lock(&pf->switch_mutex);
7315
7316         /* VSI list may be fragmented if VSI creation/destruction has
7317          * been happening.  We can afford to do a quick scan to look
7318          * for any free VSIs in the list.
7319          *
7320          * find next empty vsi slot, looping back around if necessary
7321          */
7322         i = pf->next_vsi;
7323         while (i < pf->num_alloc_vsi && pf->vsi[i])
7324                 i++;
7325         if (i >= pf->num_alloc_vsi) {
7326                 i = 0;
7327                 while (i < pf->next_vsi && pf->vsi[i])
7328                         i++;
7329         }
7330
7331         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7332                 vsi_idx = i;             /* Found one! */
7333         } else {
7334                 ret = -ENODEV;
7335                 goto unlock_pf;  /* out of VSI slots! */
7336         }
7337         pf->next_vsi = ++i;
7338
7339         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7340         if (!vsi) {
7341                 ret = -ENOMEM;
7342                 goto unlock_pf;
7343         }
7344         vsi->type = type;
7345         vsi->back = pf;
7346         set_bit(__I40E_DOWN, &vsi->state);
7347         vsi->flags = 0;
7348         vsi->idx = vsi_idx;
7349         vsi->int_rate_limit = 0;
7350         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7351                                 pf->rss_table_size : 64;
7352         vsi->netdev_registered = false;
7353         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7354         INIT_LIST_HEAD(&vsi->mac_filter_list);
7355         vsi->irqs_ready = false;
7356
7357         ret = i40e_set_num_rings_in_vsi(vsi);
7358         if (ret)
7359                 goto err_rings;
7360
7361         ret = i40e_vsi_alloc_arrays(vsi, true);
7362         if (ret)
7363                 goto err_rings;
7364
7365         /* Setup default MSIX irq handler for VSI */
7366         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7367
7368         /* Initialize VSI lock */
7369         spin_lock_init(&vsi->mac_filter_list_lock);
7370         pf->vsi[vsi_idx] = vsi;
7371         ret = vsi_idx;
7372         goto unlock_pf;
7373
7374 err_rings:
7375         pf->next_vsi = i - 1;
7376         kfree(vsi);
7377 unlock_pf:
7378         mutex_unlock(&pf->switch_mutex);
7379         return ret;
7380 }
7381
7382 /**
7383  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7384  * @type: VSI pointer
7385  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7386  *
7387  * On error: returns error code (negative)
7388  * On success: returns 0
7389  **/
7390 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7391 {
7392         /* free the ring and vector containers */
7393         if (free_qvectors) {
7394                 kfree(vsi->q_vectors);
7395                 vsi->q_vectors = NULL;
7396         }
7397         kfree(vsi->tx_rings);
7398         vsi->tx_rings = NULL;
7399         vsi->rx_rings = NULL;
7400 }
7401
7402 /**
7403  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7404  * and lookup table
7405  * @vsi: Pointer to VSI structure
7406  */
7407 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7408 {
7409         if (!vsi)
7410                 return;
7411
7412         kfree(vsi->rss_hkey_user);
7413         vsi->rss_hkey_user = NULL;
7414
7415         kfree(vsi->rss_lut_user);
7416         vsi->rss_lut_user = NULL;
7417 }
7418
7419 /**
7420  * i40e_vsi_clear - Deallocate the VSI provided
7421  * @vsi: the VSI being un-configured
7422  **/
7423 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7424 {
7425         struct i40e_pf *pf;
7426
7427         if (!vsi)
7428                 return 0;
7429
7430         if (!vsi->back)
7431                 goto free_vsi;
7432         pf = vsi->back;
7433
7434         mutex_lock(&pf->switch_mutex);
7435         if (!pf->vsi[vsi->idx]) {
7436                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7437                         vsi->idx, vsi->idx, vsi, vsi->type);
7438                 goto unlock_vsi;
7439         }
7440
7441         if (pf->vsi[vsi->idx] != vsi) {
7442                 dev_err(&pf->pdev->dev,
7443                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7444                         pf->vsi[vsi->idx]->idx,
7445                         pf->vsi[vsi->idx],
7446                         pf->vsi[vsi->idx]->type,
7447                         vsi->idx, vsi, vsi->type);
7448                 goto unlock_vsi;
7449         }
7450
7451         /* updates the PF for this cleared vsi */
7452         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7453         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7454
7455         i40e_vsi_free_arrays(vsi, true);
7456         i40e_clear_rss_config_user(vsi);
7457
7458         pf->vsi[vsi->idx] = NULL;
7459         if (vsi->idx < pf->next_vsi)
7460                 pf->next_vsi = vsi->idx;
7461
7462 unlock_vsi:
7463         mutex_unlock(&pf->switch_mutex);
7464 free_vsi:
7465         kfree(vsi);
7466
7467         return 0;
7468 }
7469
7470 /**
7471  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7472  * @vsi: the VSI being cleaned
7473  **/
7474 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7475 {
7476         int i;
7477
7478         if (vsi->tx_rings && vsi->tx_rings[0]) {
7479                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7480                         kfree_rcu(vsi->tx_rings[i], rcu);
7481                         vsi->tx_rings[i] = NULL;
7482                         vsi->rx_rings[i] = NULL;
7483                 }
7484         }
7485 }
7486
7487 /**
7488  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7489  * @vsi: the VSI being configured
7490  **/
7491 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7492 {
7493         struct i40e_ring *tx_ring, *rx_ring;
7494         struct i40e_pf *pf = vsi->back;
7495         int i;
7496
7497         /* Set basic values in the rings to be used later during open() */
7498         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7499                 /* allocate space for both Tx and Rx in one shot */
7500                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7501                 if (!tx_ring)
7502                         goto err_out;
7503
7504                 tx_ring->queue_index = i;
7505                 tx_ring->reg_idx = vsi->base_queue + i;
7506                 tx_ring->ring_active = false;
7507                 tx_ring->vsi = vsi;
7508                 tx_ring->netdev = vsi->netdev;
7509                 tx_ring->dev = &pf->pdev->dev;
7510                 tx_ring->count = vsi->num_desc;
7511                 tx_ring->size = 0;
7512                 tx_ring->dcb_tc = 0;
7513                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7514                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7515                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7516                 vsi->tx_rings[i] = tx_ring;
7517
7518                 rx_ring = &tx_ring[1];
7519                 rx_ring->queue_index = i;
7520                 rx_ring->reg_idx = vsi->base_queue + i;
7521                 rx_ring->ring_active = false;
7522                 rx_ring->vsi = vsi;
7523                 rx_ring->netdev = vsi->netdev;
7524                 rx_ring->dev = &pf->pdev->dev;
7525                 rx_ring->count = vsi->num_desc;
7526                 rx_ring->size = 0;
7527                 rx_ring->dcb_tc = 0;
7528                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7529                         set_ring_16byte_desc_enabled(rx_ring);
7530                 else
7531                         clear_ring_16byte_desc_enabled(rx_ring);
7532                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7533                 vsi->rx_rings[i] = rx_ring;
7534         }
7535
7536         return 0;
7537
7538 err_out:
7539         i40e_vsi_clear_rings(vsi);
7540         return -ENOMEM;
7541 }
7542
7543 /**
7544  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7545  * @pf: board private structure
7546  * @vectors: the number of MSI-X vectors to request
7547  *
7548  * Returns the number of vectors reserved, or error
7549  **/
7550 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7551 {
7552         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7553                                         I40E_MIN_MSIX, vectors);
7554         if (vectors < 0) {
7555                 dev_info(&pf->pdev->dev,
7556                          "MSI-X vector reservation failed: %d\n", vectors);
7557                 vectors = 0;
7558         }
7559
7560         return vectors;
7561 }
7562
7563 /**
7564  * i40e_init_msix - Setup the MSIX capability
7565  * @pf: board private structure
7566  *
7567  * Work with the OS to set up the MSIX vectors needed.
7568  *
7569  * Returns the number of vectors reserved or negative on failure
7570  **/
7571 static int i40e_init_msix(struct i40e_pf *pf)
7572 {
7573         struct i40e_hw *hw = &pf->hw;
7574         int vectors_left;
7575         int v_budget, i;
7576         int v_actual;
7577         int iwarp_requested = 0;
7578
7579         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7580                 return -ENODEV;
7581
7582         /* The number of vectors we'll request will be comprised of:
7583          *   - Add 1 for "other" cause for Admin Queue events, etc.
7584          *   - The number of LAN queue pairs
7585          *      - Queues being used for RSS.
7586          *              We don't need as many as max_rss_size vectors.
7587          *              use rss_size instead in the calculation since that
7588          *              is governed by number of cpus in the system.
7589          *      - assumes symmetric Tx/Rx pairing
7590          *   - The number of VMDq pairs
7591          *   - The CPU count within the NUMA node if iWARP is enabled
7592 #ifdef I40E_FCOE
7593          *   - The number of FCOE qps.
7594 #endif
7595          * Once we count this up, try the request.
7596          *
7597          * If we can't get what we want, we'll simplify to nearly nothing
7598          * and try again.  If that still fails, we punt.
7599          */
7600         vectors_left = hw->func_caps.num_msix_vectors;
7601         v_budget = 0;
7602
7603         /* reserve one vector for miscellaneous handler */
7604         if (vectors_left) {
7605                 v_budget++;
7606                 vectors_left--;
7607         }
7608
7609         /* reserve vectors for the main PF traffic queues */
7610         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7611         vectors_left -= pf->num_lan_msix;
7612         v_budget += pf->num_lan_msix;
7613
7614         /* reserve one vector for sideband flow director */
7615         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7616                 if (vectors_left) {
7617                         v_budget++;
7618                         vectors_left--;
7619                 } else {
7620                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7621                 }
7622         }
7623
7624 #ifdef I40E_FCOE
7625         /* can we reserve enough for FCoE? */
7626         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7627                 if (!vectors_left)
7628                         pf->num_fcoe_msix = 0;
7629                 else if (vectors_left >= pf->num_fcoe_qps)
7630                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7631                 else
7632                         pf->num_fcoe_msix = 1;
7633                 v_budget += pf->num_fcoe_msix;
7634                 vectors_left -= pf->num_fcoe_msix;
7635         }
7636
7637 #endif
7638         /* can we reserve enough for iWARP? */
7639         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7640                 if (!vectors_left)
7641                         pf->num_iwarp_msix = 0;
7642                 else if (vectors_left < pf->num_iwarp_msix)
7643                         pf->num_iwarp_msix = 1;
7644                 v_budget += pf->num_iwarp_msix;
7645                 vectors_left -= pf->num_iwarp_msix;
7646         }
7647
7648         /* any vectors left over go for VMDq support */
7649         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7650                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7651                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7652
7653                 /* if we're short on vectors for what's desired, we limit
7654                  * the queues per vmdq.  If this is still more than are
7655                  * available, the user will need to change the number of
7656                  * queues/vectors used by the PF later with the ethtool
7657                  * channels command
7658                  */
7659                 if (vmdq_vecs < vmdq_vecs_wanted)
7660                         pf->num_vmdq_qps = 1;
7661                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7662
7663                 v_budget += vmdq_vecs;
7664                 vectors_left -= vmdq_vecs;
7665         }
7666
7667         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7668                                    GFP_KERNEL);
7669         if (!pf->msix_entries)
7670                 return -ENOMEM;
7671
7672         for (i = 0; i < v_budget; i++)
7673                 pf->msix_entries[i].entry = i;
7674         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7675
7676         if (v_actual != v_budget) {
7677                 /* If we have limited resources, we will start with no vectors
7678                  * for the special features and then allocate vectors to some
7679                  * of these features based on the policy and at the end disable
7680                  * the features that did not get any vectors.
7681                  */
7682                 iwarp_requested = pf->num_iwarp_msix;
7683                 pf->num_iwarp_msix = 0;
7684 #ifdef I40E_FCOE
7685                 pf->num_fcoe_qps = 0;
7686                 pf->num_fcoe_msix = 0;
7687 #endif
7688                 pf->num_vmdq_msix = 0;
7689         }
7690
7691         if (v_actual < I40E_MIN_MSIX) {
7692                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7693                 kfree(pf->msix_entries);
7694                 pf->msix_entries = NULL;
7695                 return -ENODEV;
7696
7697         } else if (v_actual == I40E_MIN_MSIX) {
7698                 /* Adjust for minimal MSIX use */
7699                 pf->num_vmdq_vsis = 0;
7700                 pf->num_vmdq_qps = 0;
7701                 pf->num_lan_qps = 1;
7702                 pf->num_lan_msix = 1;
7703
7704         } else if (v_actual != v_budget) {
7705                 int vec;
7706
7707                 /* reserve the misc vector */
7708                 vec = v_actual - 1;
7709
7710                 /* Scale vector usage down */
7711                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7712                 pf->num_vmdq_vsis = 1;
7713                 pf->num_vmdq_qps = 1;
7714                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7715
7716                 /* partition out the remaining vectors */
7717                 switch (vec) {
7718                 case 2:
7719                         pf->num_lan_msix = 1;
7720                         break;
7721                 case 3:
7722                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7723                                 pf->num_lan_msix = 1;
7724                                 pf->num_iwarp_msix = 1;
7725                         } else {
7726                                 pf->num_lan_msix = 2;
7727                         }
7728 #ifdef I40E_FCOE
7729                         /* give one vector to FCoE */
7730                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7731                                 pf->num_lan_msix = 1;
7732                                 pf->num_fcoe_msix = 1;
7733                         }
7734 #endif
7735                         break;
7736                 default:
7737                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7738                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7739                                                  iwarp_requested);
7740                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7741                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7742                         } else {
7743                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7744                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7745                         }
7746                         pf->num_lan_msix = min_t(int,
7747                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7748                                                               pf->num_lan_msix);
7749 #ifdef I40E_FCOE
7750                         /* give one vector to FCoE */
7751                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7752                                 pf->num_fcoe_msix = 1;
7753                                 vec--;
7754                         }
7755 #endif
7756                         break;
7757                 }
7758         }
7759
7760         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7761             (pf->num_vmdq_msix == 0)) {
7762                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7763                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7764         }
7765
7766         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7767             (pf->num_iwarp_msix == 0)) {
7768                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7769                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7770         }
7771 #ifdef I40E_FCOE
7772
7773         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7774                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7775                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7776         }
7777 #endif
7778         return v_actual;
7779 }
7780
7781 /**
7782  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7783  * @vsi: the VSI being configured
7784  * @v_idx: index of the vector in the vsi struct
7785  *
7786  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7787  **/
7788 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7789 {
7790         struct i40e_q_vector *q_vector;
7791
7792         /* allocate q_vector */
7793         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7794         if (!q_vector)
7795                 return -ENOMEM;
7796
7797         q_vector->vsi = vsi;
7798         q_vector->v_idx = v_idx;
7799         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7800         if (vsi->netdev)
7801                 netif_napi_add(vsi->netdev, &q_vector->napi,
7802                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7803
7804         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7805         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7806
7807         /* tie q_vector and vsi together */
7808         vsi->q_vectors[v_idx] = q_vector;
7809
7810         return 0;
7811 }
7812
7813 /**
7814  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7815  * @vsi: the VSI being configured
7816  *
7817  * We allocate one q_vector per queue interrupt.  If allocation fails we
7818  * return -ENOMEM.
7819  **/
7820 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7821 {
7822         struct i40e_pf *pf = vsi->back;
7823         int v_idx, num_q_vectors;
7824         int err;
7825
7826         /* if not MSIX, give the one vector only to the LAN VSI */
7827         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7828                 num_q_vectors = vsi->num_q_vectors;
7829         else if (vsi == pf->vsi[pf->lan_vsi])
7830                 num_q_vectors = 1;
7831         else
7832                 return -EINVAL;
7833
7834         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7835                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7836                 if (err)
7837                         goto err_out;
7838         }
7839
7840         return 0;
7841
7842 err_out:
7843         while (v_idx--)
7844                 i40e_free_q_vector(vsi, v_idx);
7845
7846         return err;
7847 }
7848
7849 /**
7850  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7851  * @pf: board private structure to initialize
7852  **/
7853 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7854 {
7855         int vectors = 0;
7856         ssize_t size;
7857
7858         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7859                 vectors = i40e_init_msix(pf);
7860                 if (vectors < 0) {
7861                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7862                                        I40E_FLAG_IWARP_ENABLED  |
7863 #ifdef I40E_FCOE
7864                                        I40E_FLAG_FCOE_ENABLED   |
7865 #endif
7866                                        I40E_FLAG_RSS_ENABLED    |
7867                                        I40E_FLAG_DCB_CAPABLE    |
7868                                        I40E_FLAG_SRIOV_ENABLED  |
7869                                        I40E_FLAG_FD_SB_ENABLED  |
7870                                        I40E_FLAG_FD_ATR_ENABLED |
7871                                        I40E_FLAG_VMDQ_ENABLED);
7872
7873                         /* rework the queue expectations without MSIX */
7874                         i40e_determine_queue_usage(pf);
7875                 }
7876         }
7877
7878         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7879             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7880                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7881                 vectors = pci_enable_msi(pf->pdev);
7882                 if (vectors < 0) {
7883                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7884                                  vectors);
7885                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7886                 }
7887                 vectors = 1;  /* one MSI or Legacy vector */
7888         }
7889
7890         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7891                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7892
7893         /* set up vector assignment tracking */
7894         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7895         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7896         if (!pf->irq_pile) {
7897                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7898                 return -ENOMEM;
7899         }
7900         pf->irq_pile->num_entries = vectors;
7901         pf->irq_pile->search_hint = 0;
7902
7903         /* track first vector for misc interrupts, ignore return */
7904         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7905
7906         return 0;
7907 }
7908
7909 /**
7910  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7911  * @pf: board private structure
7912  *
7913  * This sets up the handler for MSIX 0, which is used to manage the
7914  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7915  * when in MSI or Legacy interrupt mode.
7916  **/
7917 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7918 {
7919         struct i40e_hw *hw = &pf->hw;
7920         int err = 0;
7921
7922         /* Only request the irq if this is the first time through, and
7923          * not when we're rebuilding after a Reset
7924          */
7925         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7926                 err = request_irq(pf->msix_entries[0].vector,
7927                                   i40e_intr, 0, pf->int_name, pf);
7928                 if (err) {
7929                         dev_info(&pf->pdev->dev,
7930                                  "request_irq for %s failed: %d\n",
7931                                  pf->int_name, err);
7932                         return -EFAULT;
7933                 }
7934         }
7935
7936         i40e_enable_misc_int_causes(pf);
7937
7938         /* associate no queues to the misc vector */
7939         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7940         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7941
7942         i40e_flush(hw);
7943
7944         i40e_irq_dynamic_enable_icr0(pf, true);
7945
7946         return err;
7947 }
7948
7949 /**
7950  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7951  * @vsi: vsi structure
7952  * @seed: RSS hash seed
7953  **/
7954 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7955                               u8 *lut, u16 lut_size)
7956 {
7957         struct i40e_aqc_get_set_rss_key_data rss_key;
7958         struct i40e_pf *pf = vsi->back;
7959         struct i40e_hw *hw = &pf->hw;
7960         bool pf_lut = false;
7961         u8 *rss_lut;
7962         int ret, i;
7963
7964         memset(&rss_key, 0, sizeof(rss_key));
7965         memcpy(&rss_key, seed, sizeof(rss_key));
7966
7967         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7968         if (!rss_lut)
7969                 return -ENOMEM;
7970
7971         /* Populate the LUT with max no. of queues in round robin fashion */
7972         for (i = 0; i < vsi->rss_table_size; i++)
7973                 rss_lut[i] = i % vsi->rss_size;
7974
7975         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7976         if (ret) {
7977                 dev_info(&pf->pdev->dev,
7978                          "Cannot set RSS key, err %s aq_err %s\n",
7979                          i40e_stat_str(&pf->hw, ret),
7980                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7981                 goto config_rss_aq_out;
7982         }
7983
7984         if (vsi->type == I40E_VSI_MAIN)
7985                 pf_lut = true;
7986
7987         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7988                                   vsi->rss_table_size);
7989         if (ret)
7990                 dev_info(&pf->pdev->dev,
7991                          "Cannot set RSS lut, err %s aq_err %s\n",
7992                          i40e_stat_str(&pf->hw, ret),
7993                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7994
7995 config_rss_aq_out:
7996         kfree(rss_lut);
7997         return ret;
7998 }
7999
8000 /**
8001  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8002  * @vsi: VSI structure
8003  **/
8004 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8005 {
8006         u8 seed[I40E_HKEY_ARRAY_SIZE];
8007         struct i40e_pf *pf = vsi->back;
8008         u8 *lut;
8009         int ret;
8010
8011         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8012                 return 0;
8013
8014         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8015         if (!lut)
8016                 return -ENOMEM;
8017
8018         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8019         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8020         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
8021         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8022         kfree(lut);
8023
8024         return ret;
8025 }
8026
8027 /**
8028  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8029  * @vsi: Pointer to vsi structure
8030  * @seed: Buffter to store the hash keys
8031  * @lut: Buffer to store the lookup table entries
8032  * @lut_size: Size of buffer to store the lookup table entries
8033  *
8034  * Return 0 on success, negative on failure
8035  */
8036 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8037                            u8 *lut, u16 lut_size)
8038 {
8039         struct i40e_pf *pf = vsi->back;
8040         struct i40e_hw *hw = &pf->hw;
8041         int ret = 0;
8042
8043         if (seed) {
8044                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8045                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8046                 if (ret) {
8047                         dev_info(&pf->pdev->dev,
8048                                  "Cannot get RSS key, err %s aq_err %s\n",
8049                                  i40e_stat_str(&pf->hw, ret),
8050                                  i40e_aq_str(&pf->hw,
8051                                              pf->hw.aq.asq_last_status));
8052                         return ret;
8053                 }
8054         }
8055
8056         if (lut) {
8057                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8058
8059                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8060                 if (ret) {
8061                         dev_info(&pf->pdev->dev,
8062                                  "Cannot get RSS lut, err %s aq_err %s\n",
8063                                  i40e_stat_str(&pf->hw, ret),
8064                                  i40e_aq_str(&pf->hw,
8065                                              pf->hw.aq.asq_last_status));
8066                         return ret;
8067                 }
8068         }
8069
8070         return ret;
8071 }
8072
8073 /**
8074  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8075  * @vsi: Pointer to vsi structure
8076  * @seed: RSS hash seed
8077  * @lut: Lookup table
8078  * @lut_size: Lookup table size
8079  *
8080  * Returns 0 on success, negative on failure
8081  **/
8082 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8083                                const u8 *lut, u16 lut_size)
8084 {
8085         struct i40e_pf *pf = vsi->back;
8086         struct i40e_hw *hw = &pf->hw;
8087         u8 i;
8088
8089         /* Fill out hash function seed */
8090         if (seed) {
8091                 u32 *seed_dw = (u32 *)seed;
8092
8093                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8094                         i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
8095         }
8096
8097         if (lut) {
8098                 u32 *lut_dw = (u32 *)lut;
8099
8100                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8101                         return -EINVAL;
8102
8103                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8104                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8105         }
8106         i40e_flush(hw);
8107
8108         return 0;
8109 }
8110
8111 /**
8112  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8113  * @vsi: Pointer to VSI structure
8114  * @seed: Buffer to store the keys
8115  * @lut: Buffer to store the lookup table entries
8116  * @lut_size: Size of buffer to store the lookup table entries
8117  *
8118  * Returns 0 on success, negative on failure
8119  */
8120 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8121                             u8 *lut, u16 lut_size)
8122 {
8123         struct i40e_pf *pf = vsi->back;
8124         struct i40e_hw *hw = &pf->hw;
8125         u16 i;
8126
8127         if (seed) {
8128                 u32 *seed_dw = (u32 *)seed;
8129
8130                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8131                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8132         }
8133         if (lut) {
8134                 u32 *lut_dw = (u32 *)lut;
8135
8136                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8137                         return -EINVAL;
8138                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8139                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8140         }
8141
8142         return 0;
8143 }
8144
8145 /**
8146  * i40e_config_rss - Configure RSS keys and lut
8147  * @vsi: Pointer to VSI structure
8148  * @seed: RSS hash seed
8149  * @lut: Lookup table
8150  * @lut_size: Lookup table size
8151  *
8152  * Returns 0 on success, negative on failure
8153  */
8154 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8155 {
8156         struct i40e_pf *pf = vsi->back;
8157
8158         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8159                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8160         else
8161                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8162 }
8163
8164 /**
8165  * i40e_get_rss - Get RSS keys and lut
8166  * @vsi: Pointer to VSI structure
8167  * @seed: Buffer to store the keys
8168  * @lut: Buffer to store the lookup table entries
8169  * lut_size: Size of buffer to store the lookup table entries
8170  *
8171  * Returns 0 on success, negative on failure
8172  */
8173 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8174 {
8175         struct i40e_pf *pf = vsi->back;
8176
8177         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8178                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8179         else
8180                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8181 }
8182
8183 /**
8184  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8185  * @pf: Pointer to board private structure
8186  * @lut: Lookup table
8187  * @rss_table_size: Lookup table size
8188  * @rss_size: Range of queue number for hashing
8189  */
8190 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8191                               u16 rss_table_size, u16 rss_size)
8192 {
8193         u16 i;
8194
8195         for (i = 0; i < rss_table_size; i++)
8196                 lut[i] = i % rss_size;
8197 }
8198
8199 /**
8200  * i40e_pf_config_rss - Prepare for RSS if used
8201  * @pf: board private structure
8202  **/
8203 static int i40e_pf_config_rss(struct i40e_pf *pf)
8204 {
8205         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8206         u8 seed[I40E_HKEY_ARRAY_SIZE];
8207         u8 *lut;
8208         struct i40e_hw *hw = &pf->hw;
8209         u32 reg_val;
8210         u64 hena;
8211         int ret;
8212
8213         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8214         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8215                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8216         hena |= i40e_pf_get_default_rss_hena(pf);
8217
8218         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8219         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8220
8221         /* Determine the RSS table size based on the hardware capabilities */
8222         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8223         reg_val = (pf->rss_table_size == 512) ?
8224                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8225                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8226         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8227
8228         /* Determine the RSS size of the VSI */
8229         if (!vsi->rss_size)
8230                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8231                                       vsi->num_queue_pairs);
8232
8233         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8234         if (!lut)
8235                 return -ENOMEM;
8236
8237         /* Use user configured lut if there is one, otherwise use default */
8238         if (vsi->rss_lut_user)
8239                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8240         else
8241                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8242
8243         /* Use user configured hash key if there is one, otherwise
8244          * use default.
8245          */
8246         if (vsi->rss_hkey_user)
8247                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8248         else
8249                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8250         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8251         kfree(lut);
8252
8253         return ret;
8254 }
8255
8256 /**
8257  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8258  * @pf: board private structure
8259  * @queue_count: the requested queue count for rss.
8260  *
8261  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8262  * count which may be different from the requested queue count.
8263  **/
8264 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8265 {
8266         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8267         int new_rss_size;
8268
8269         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8270                 return 0;
8271
8272         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8273
8274         if (queue_count != vsi->num_queue_pairs) {
8275                 vsi->req_queue_pairs = queue_count;
8276                 i40e_prep_for_reset(pf);
8277
8278                 pf->alloc_rss_size = new_rss_size;
8279
8280                 i40e_reset_and_rebuild(pf, true);
8281
8282                 /* Discard the user configured hash keys and lut, if less
8283                  * queues are enabled.
8284                  */
8285                 if (queue_count < vsi->rss_size) {
8286                         i40e_clear_rss_config_user(vsi);
8287                         dev_dbg(&pf->pdev->dev,
8288                                 "discard user configured hash keys and lut\n");
8289                 }
8290
8291                 /* Reset vsi->rss_size, as number of enabled queues changed */
8292                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8293                                       vsi->num_queue_pairs);
8294
8295                 i40e_pf_config_rss(pf);
8296         }
8297         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8298                  pf->alloc_rss_size, pf->rss_size_max);
8299         return pf->alloc_rss_size;
8300 }
8301
8302 /**
8303  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8304  * @pf: board private structure
8305  **/
8306 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8307 {
8308         i40e_status status;
8309         bool min_valid, max_valid;
8310         u32 max_bw, min_bw;
8311
8312         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8313                                            &min_valid, &max_valid);
8314
8315         if (!status) {
8316                 if (min_valid)
8317                         pf->npar_min_bw = min_bw;
8318                 if (max_valid)
8319                         pf->npar_max_bw = max_bw;
8320         }
8321
8322         return status;
8323 }
8324
8325 /**
8326  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8327  * @pf: board private structure
8328  **/
8329 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8330 {
8331         struct i40e_aqc_configure_partition_bw_data bw_data;
8332         i40e_status status;
8333
8334         /* Set the valid bit for this PF */
8335         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8336         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8337         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8338
8339         /* Set the new bandwidths */
8340         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8341
8342         return status;
8343 }
8344
8345 /**
8346  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8347  * @pf: board private structure
8348  **/
8349 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8350 {
8351         /* Commit temporary BW setting to permanent NVM image */
8352         enum i40e_admin_queue_err last_aq_status;
8353         i40e_status ret;
8354         u16 nvm_word;
8355
8356         if (pf->hw.partition_id != 1) {
8357                 dev_info(&pf->pdev->dev,
8358                          "Commit BW only works on partition 1! This is partition %d",
8359                          pf->hw.partition_id);
8360                 ret = I40E_NOT_SUPPORTED;
8361                 goto bw_commit_out;
8362         }
8363
8364         /* Acquire NVM for read access */
8365         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8366         last_aq_status = pf->hw.aq.asq_last_status;
8367         if (ret) {
8368                 dev_info(&pf->pdev->dev,
8369                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8370                          i40e_stat_str(&pf->hw, ret),
8371                          i40e_aq_str(&pf->hw, last_aq_status));
8372                 goto bw_commit_out;
8373         }
8374
8375         /* Read word 0x10 of NVM - SW compatibility word 1 */
8376         ret = i40e_aq_read_nvm(&pf->hw,
8377                                I40E_SR_NVM_CONTROL_WORD,
8378                                0x10, sizeof(nvm_word), &nvm_word,
8379                                false, NULL);
8380         /* Save off last admin queue command status before releasing
8381          * the NVM
8382          */
8383         last_aq_status = pf->hw.aq.asq_last_status;
8384         i40e_release_nvm(&pf->hw);
8385         if (ret) {
8386                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8387                          i40e_stat_str(&pf->hw, ret),
8388                          i40e_aq_str(&pf->hw, last_aq_status));
8389                 goto bw_commit_out;
8390         }
8391
8392         /* Wait a bit for NVM release to complete */
8393         msleep(50);
8394
8395         /* Acquire NVM for write access */
8396         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8397         last_aq_status = pf->hw.aq.asq_last_status;
8398         if (ret) {
8399                 dev_info(&pf->pdev->dev,
8400                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8401                          i40e_stat_str(&pf->hw, ret),
8402                          i40e_aq_str(&pf->hw, last_aq_status));
8403                 goto bw_commit_out;
8404         }
8405         /* Write it back out unchanged to initiate update NVM,
8406          * which will force a write of the shadow (alt) RAM to
8407          * the NVM - thus storing the bandwidth values permanently.
8408          */
8409         ret = i40e_aq_update_nvm(&pf->hw,
8410                                  I40E_SR_NVM_CONTROL_WORD,
8411                                  0x10, sizeof(nvm_word),
8412                                  &nvm_word, true, NULL);
8413         /* Save off last admin queue command status before releasing
8414          * the NVM
8415          */
8416         last_aq_status = pf->hw.aq.asq_last_status;
8417         i40e_release_nvm(&pf->hw);
8418         if (ret)
8419                 dev_info(&pf->pdev->dev,
8420                          "BW settings NOT SAVED, err %s aq_err %s\n",
8421                          i40e_stat_str(&pf->hw, ret),
8422                          i40e_aq_str(&pf->hw, last_aq_status));
8423 bw_commit_out:
8424
8425         return ret;
8426 }
8427
8428 /**
8429  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8430  * @pf: board private structure to initialize
8431  *
8432  * i40e_sw_init initializes the Adapter private data structure.
8433  * Fields are initialized based on PCI device information and
8434  * OS network device settings (MTU size).
8435  **/
8436 static int i40e_sw_init(struct i40e_pf *pf)
8437 {
8438         int err = 0;
8439         int size;
8440
8441         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8442                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8443         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8444         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8445                 if (I40E_DEBUG_USER & debug)
8446                         pf->hw.debug_mask = debug;
8447                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8448                                                 I40E_DEFAULT_MSG_ENABLE);
8449         }
8450
8451         /* Set default capability flags */
8452         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8453                     I40E_FLAG_MSI_ENABLED     |
8454                     I40E_FLAG_LINK_POLLING_ENABLED |
8455                     I40E_FLAG_MSIX_ENABLED;
8456
8457         if (iommu_present(&pci_bus_type))
8458                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8459         else
8460                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8461
8462         /* Set default ITR */
8463         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8464         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8465
8466         /* Depending on PF configurations, it is possible that the RSS
8467          * maximum might end up larger than the available queues
8468          */
8469         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8470         pf->alloc_rss_size = 1;
8471         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8472         pf->rss_size_max = min_t(int, pf->rss_size_max,
8473                                  pf->hw.func_caps.num_tx_qp);
8474         if (pf->hw.func_caps.rss) {
8475                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8476                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8477                                            num_online_cpus());
8478         }
8479
8480         /* MFP mode enabled */
8481         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8482                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8483                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8484                 if (i40e_get_npar_bw_setting(pf))
8485                         dev_warn(&pf->pdev->dev,
8486                                  "Could not get NPAR bw settings\n");
8487                 else
8488                         dev_info(&pf->pdev->dev,
8489                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8490                                  pf->npar_min_bw, pf->npar_max_bw);
8491         }
8492
8493         /* FW/NVM is not yet fixed in this regard */
8494         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8495             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8496                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8497                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8498                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8499                     pf->hw.num_partitions > 1)
8500                         dev_info(&pf->pdev->dev,
8501                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8502                 else
8503                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8504                 pf->fdir_pf_filter_count =
8505                                  pf->hw.func_caps.fd_filters_guaranteed;
8506                 pf->hw.fdir_shared_filter_count =
8507                                  pf->hw.func_caps.fd_filters_best_effort;
8508         }
8509
8510         if (i40e_is_mac_710(&pf->hw) &&
8511             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8512             (pf->hw.aq.fw_maj_ver < 4))) {
8513                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8514                 /* No DCB support  for FW < v4.33 */
8515                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8516         }
8517
8518         /* Disable FW LLDP if FW < v4.3 */
8519         if (i40e_is_mac_710(&pf->hw) &&
8520             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8521             (pf->hw.aq.fw_maj_ver < 4)))
8522                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8523
8524         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8525         if (i40e_is_mac_710(&pf->hw) &&
8526             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8527             (pf->hw.aq.fw_maj_ver >= 5)))
8528                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8529
8530         if (pf->hw.func_caps.vmdq) {
8531                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8532                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8533                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8534         }
8535
8536         if (pf->hw.func_caps.iwarp) {
8537                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8538                 /* IWARP needs one extra vector for CQP just like MISC.*/
8539                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8540         }
8541
8542 #ifdef I40E_FCOE
8543         i40e_init_pf_fcoe(pf);
8544
8545 #endif /* I40E_FCOE */
8546 #ifdef CONFIG_PCI_IOV
8547         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8548                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8549                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8550                 pf->num_req_vfs = min_t(int,
8551                                         pf->hw.func_caps.num_vfs,
8552                                         I40E_MAX_VF_COUNT);
8553         }
8554 #endif /* CONFIG_PCI_IOV */
8555         if (pf->hw.mac.type == I40E_MAC_X722) {
8556                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8557                              I40E_FLAG_128_QP_RSS_CAPABLE |
8558                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8559                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8560                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8561                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8562                              I40E_FLAG_NO_PCI_LINK_CHECK |
8563                              I40E_FLAG_100M_SGMII_CAPABLE |
8564                              I40E_FLAG_USE_SET_LLDP_MIB |
8565                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8566         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8567                    ((pf->hw.aq.api_maj_ver == 1) &&
8568                     (pf->hw.aq.api_min_ver > 4))) {
8569                 /* Supported in FW API version higher than 1.4 */
8570                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8571                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8572         } else {
8573                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8574         }
8575
8576         pf->eeprom_version = 0xDEAD;
8577         pf->lan_veb = I40E_NO_VEB;
8578         pf->lan_vsi = I40E_NO_VSI;
8579
8580         /* By default FW has this off for performance reasons */
8581         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8582
8583         /* set up queue assignment tracking */
8584         size = sizeof(struct i40e_lump_tracking)
8585                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8586         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8587         if (!pf->qp_pile) {
8588                 err = -ENOMEM;
8589                 goto sw_init_done;
8590         }
8591         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8592         pf->qp_pile->search_hint = 0;
8593
8594         pf->tx_timeout_recovery_level = 1;
8595
8596         mutex_init(&pf->switch_mutex);
8597
8598         /* If NPAR is enabled nudge the Tx scheduler */
8599         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8600                 i40e_set_npar_bw_setting(pf);
8601
8602 sw_init_done:
8603         return err;
8604 }
8605
8606 /**
8607  * i40e_set_ntuple - set the ntuple feature flag and take action
8608  * @pf: board private structure to initialize
8609  * @features: the feature set that the stack is suggesting
8610  *
8611  * returns a bool to indicate if reset needs to happen
8612  **/
8613 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8614 {
8615         bool need_reset = false;
8616
8617         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8618          * the state changed, we need to reset.
8619          */
8620         if (features & NETIF_F_NTUPLE) {
8621                 /* Enable filters and mark for reset */
8622                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8623                         need_reset = true;
8624                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8625         } else {
8626                 /* turn off filters, mark for reset and clear SW filter list */
8627                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8628                         need_reset = true;
8629                         i40e_fdir_filter_exit(pf);
8630                 }
8631                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8632                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8633                 /* reset fd counters */
8634                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8635                 pf->fdir_pf_active_filters = 0;
8636                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8637                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8638                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8639                 /* if ATR was auto disabled it can be re-enabled. */
8640                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8641                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8642                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8643         }
8644         return need_reset;
8645 }
8646
8647 /**
8648  * i40e_set_features - set the netdev feature flags
8649  * @netdev: ptr to the netdev being adjusted
8650  * @features: the feature set that the stack is suggesting
8651  **/
8652 static int i40e_set_features(struct net_device *netdev,
8653                              netdev_features_t features)
8654 {
8655         struct i40e_netdev_priv *np = netdev_priv(netdev);
8656         struct i40e_vsi *vsi = np->vsi;
8657         struct i40e_pf *pf = vsi->back;
8658         bool need_reset;
8659
8660         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8661                 i40e_vlan_stripping_enable(vsi);
8662         else
8663                 i40e_vlan_stripping_disable(vsi);
8664
8665         need_reset = i40e_set_ntuple(pf, features);
8666
8667         if (need_reset)
8668                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8669
8670         return 0;
8671 }
8672
8673 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
8674 /**
8675  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8676  * @pf: board private structure
8677  * @port: The UDP port to look up
8678  *
8679  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8680  **/
8681 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8682 {
8683         u8 i;
8684
8685         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8686                 if (pf->udp_ports[i].index == port)
8687                         return i;
8688         }
8689
8690         return i;
8691 }
8692
8693 #endif
8694
8695 #if IS_ENABLED(CONFIG_VXLAN)
8696 /**
8697  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8698  * @netdev: This physical port's netdev
8699  * @sa_family: Socket Family that VXLAN is notifying us about
8700  * @port: New UDP port number that VXLAN started listening to
8701  **/
8702 static void i40e_add_vxlan_port(struct net_device *netdev,
8703                                 sa_family_t sa_family, __be16 port)
8704 {
8705         struct i40e_netdev_priv *np = netdev_priv(netdev);
8706         struct i40e_vsi *vsi = np->vsi;
8707         struct i40e_pf *pf = vsi->back;
8708         u8 next_idx;
8709         u8 idx;
8710
8711         idx = i40e_get_udp_port_idx(pf, port);
8712
8713         /* Check if port already exists */
8714         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8715                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8716                             ntohs(port));
8717                 return;
8718         }
8719
8720         /* Now check if there is space to add the new port */
8721         next_idx = i40e_get_udp_port_idx(pf, 0);
8722
8723         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8724                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8725                             ntohs(port));
8726                 return;
8727         }
8728
8729         /* New port: add it and mark its index in the bitmap */
8730         pf->udp_ports[next_idx].index = port;
8731         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8732         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8733         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8734 }
8735
8736 /**
8737  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8738  * @netdev: This physical port's netdev
8739  * @sa_family: Socket Family that VXLAN is notifying us about
8740  * @port: UDP port number that VXLAN stopped listening to
8741  **/
8742 static void i40e_del_vxlan_port(struct net_device *netdev,
8743                                 sa_family_t sa_family, __be16 port)
8744 {
8745         struct i40e_netdev_priv *np = netdev_priv(netdev);
8746         struct i40e_vsi *vsi = np->vsi;
8747         struct i40e_pf *pf = vsi->back;
8748         u8 idx;
8749
8750         idx = i40e_get_udp_port_idx(pf, port);
8751
8752         /* Check if port already exists */
8753         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8754                 /* if port exists, set it to 0 (mark for deletion)
8755                  * and make it pending
8756                  */
8757                 pf->udp_ports[idx].index = 0;
8758                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8759                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8760         } else {
8761                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8762                             ntohs(port));
8763         }
8764 }
8765 #endif
8766
8767 #if IS_ENABLED(CONFIG_GENEVE)
8768 /**
8769  * i40e_add_geneve_port - Get notifications about GENEVE ports that come up
8770  * @netdev: This physical port's netdev
8771  * @sa_family: Socket Family that GENEVE is notifying us about
8772  * @port: New UDP port number that GENEVE started listening to
8773  **/
8774 static void i40e_add_geneve_port(struct net_device *netdev,
8775                                  sa_family_t sa_family, __be16 port)
8776 {
8777         struct i40e_netdev_priv *np = netdev_priv(netdev);
8778         struct i40e_vsi *vsi = np->vsi;
8779         struct i40e_pf *pf = vsi->back;
8780         u8 next_idx;
8781         u8 idx;
8782
8783         if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8784                 return;
8785
8786         idx = i40e_get_udp_port_idx(pf, port);
8787
8788         /* Check if port already exists */
8789         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8790                 netdev_info(netdev, "udp port %d already offloaded\n",
8791                             ntohs(port));
8792                 return;
8793         }
8794
8795         /* Now check if there is space to add the new port */
8796         next_idx = i40e_get_udp_port_idx(pf, 0);
8797
8798         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8799                 netdev_info(netdev, "maximum number of UDP ports reached, not adding port %d\n",
8800                             ntohs(port));
8801                 return;
8802         }
8803
8804         /* New port: add it and mark its index in the bitmap */
8805         pf->udp_ports[next_idx].index = port;
8806         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8807         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8808         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8809
8810         dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port));
8811 }
8812
8813 /**
8814  * i40e_del_geneve_port - Get notifications about GENEVE ports that go away
8815  * @netdev: This physical port's netdev
8816  * @sa_family: Socket Family that GENEVE is notifying us about
8817  * @port: UDP port number that GENEVE stopped listening to
8818  **/
8819 static void i40e_del_geneve_port(struct net_device *netdev,
8820                                  sa_family_t sa_family, __be16 port)
8821 {
8822         struct i40e_netdev_priv *np = netdev_priv(netdev);
8823         struct i40e_vsi *vsi = np->vsi;
8824         struct i40e_pf *pf = vsi->back;
8825         u8 idx;
8826
8827         if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8828                 return;
8829
8830         idx = i40e_get_udp_port_idx(pf, port);
8831
8832         /* Check if port already exists */
8833         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8834                 /* if port exists, set it to 0 (mark for deletion)
8835                  * and make it pending
8836                  */
8837                 pf->udp_ports[idx].index = 0;
8838                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8839                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8840
8841                 dev_info(&pf->pdev->dev, "deleting geneve port %d\n",
8842                          ntohs(port));
8843         } else {
8844                 netdev_warn(netdev, "geneve port %d was not found, not deleting\n",
8845                             ntohs(port));
8846         }
8847 }
8848 #endif
8849
8850 static int i40e_get_phys_port_id(struct net_device *netdev,
8851                                  struct netdev_phys_item_id *ppid)
8852 {
8853         struct i40e_netdev_priv *np = netdev_priv(netdev);
8854         struct i40e_pf *pf = np->vsi->back;
8855         struct i40e_hw *hw = &pf->hw;
8856
8857         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8858                 return -EOPNOTSUPP;
8859
8860         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8861         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8862
8863         return 0;
8864 }
8865
8866 /**
8867  * i40e_ndo_fdb_add - add an entry to the hardware database
8868  * @ndm: the input from the stack
8869  * @tb: pointer to array of nladdr (unused)
8870  * @dev: the net device pointer
8871  * @addr: the MAC address entry being added
8872  * @flags: instructions from stack about fdb operation
8873  */
8874 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8875                             struct net_device *dev,
8876                             const unsigned char *addr, u16 vid,
8877                             u16 flags)
8878 {
8879         struct i40e_netdev_priv *np = netdev_priv(dev);
8880         struct i40e_pf *pf = np->vsi->back;
8881         int err = 0;
8882
8883         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8884                 return -EOPNOTSUPP;
8885
8886         if (vid) {
8887                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8888                 return -EINVAL;
8889         }
8890
8891         /* Hardware does not support aging addresses so if a
8892          * ndm_state is given only allow permanent addresses
8893          */
8894         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8895                 netdev_info(dev, "FDB only supports static addresses\n");
8896                 return -EINVAL;
8897         }
8898
8899         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8900                 err = dev_uc_add_excl(dev, addr);
8901         else if (is_multicast_ether_addr(addr))
8902                 err = dev_mc_add_excl(dev, addr);
8903         else
8904                 err = -EINVAL;
8905
8906         /* Only return duplicate errors if NLM_F_EXCL is set */
8907         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8908                 err = 0;
8909
8910         return err;
8911 }
8912
8913 /**
8914  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8915  * @dev: the netdev being configured
8916  * @nlh: RTNL message
8917  *
8918  * Inserts a new hardware bridge if not already created and
8919  * enables the bridging mode requested (VEB or VEPA). If the
8920  * hardware bridge has already been inserted and the request
8921  * is to change the mode then that requires a PF reset to
8922  * allow rebuild of the components with required hardware
8923  * bridge mode enabled.
8924  **/
8925 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8926                                    struct nlmsghdr *nlh,
8927                                    u16 flags)
8928 {
8929         struct i40e_netdev_priv *np = netdev_priv(dev);
8930         struct i40e_vsi *vsi = np->vsi;
8931         struct i40e_pf *pf = vsi->back;
8932         struct i40e_veb *veb = NULL;
8933         struct nlattr *attr, *br_spec;
8934         int i, rem;
8935
8936         /* Only for PF VSI for now */
8937         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8938                 return -EOPNOTSUPP;
8939
8940         /* Find the HW bridge for PF VSI */
8941         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8942                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8943                         veb = pf->veb[i];
8944         }
8945
8946         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8947
8948         nla_for_each_nested(attr, br_spec, rem) {
8949                 __u16 mode;
8950
8951                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8952                         continue;
8953
8954                 mode = nla_get_u16(attr);
8955                 if ((mode != BRIDGE_MODE_VEPA) &&
8956                     (mode != BRIDGE_MODE_VEB))
8957                         return -EINVAL;
8958
8959                 /* Insert a new HW bridge */
8960                 if (!veb) {
8961                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8962                                              vsi->tc_config.enabled_tc);
8963                         if (veb) {
8964                                 veb->bridge_mode = mode;
8965                                 i40e_config_bridge_mode(veb);
8966                         } else {
8967                                 /* No Bridge HW offload available */
8968                                 return -ENOENT;
8969                         }
8970                         break;
8971                 } else if (mode != veb->bridge_mode) {
8972                         /* Existing HW bridge but different mode needs reset */
8973                         veb->bridge_mode = mode;
8974                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8975                         if (mode == BRIDGE_MODE_VEB)
8976                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8977                         else
8978                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8979                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8980                         break;
8981                 }
8982         }
8983
8984         return 0;
8985 }
8986
8987 /**
8988  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8989  * @skb: skb buff
8990  * @pid: process id
8991  * @seq: RTNL message seq #
8992  * @dev: the netdev being configured
8993  * @filter_mask: unused
8994  * @nlflags: netlink flags passed in
8995  *
8996  * Return the mode in which the hardware bridge is operating in
8997  * i.e VEB or VEPA.
8998  **/
8999 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9000                                    struct net_device *dev,
9001                                    u32 __always_unused filter_mask,
9002                                    int nlflags)
9003 {
9004         struct i40e_netdev_priv *np = netdev_priv(dev);
9005         struct i40e_vsi *vsi = np->vsi;
9006         struct i40e_pf *pf = vsi->back;
9007         struct i40e_veb *veb = NULL;
9008         int i;
9009
9010         /* Only for PF VSI for now */
9011         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9012                 return -EOPNOTSUPP;
9013
9014         /* Find the HW bridge for the PF VSI */
9015         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9016                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9017                         veb = pf->veb[i];
9018         }
9019
9020         if (!veb)
9021                 return 0;
9022
9023         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9024                                        nlflags, 0, 0, filter_mask, NULL);
9025 }
9026
9027 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
9028  * inner mac plus all inner ethertypes.
9029  */
9030 #define I40E_MAX_TUNNEL_HDR_LEN 128
9031 /**
9032  * i40e_features_check - Validate encapsulated packet conforms to limits
9033  * @skb: skb buff
9034  * @dev: This physical port's netdev
9035  * @features: Offload features that the stack believes apply
9036  **/
9037 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9038                                              struct net_device *dev,
9039                                              netdev_features_t features)
9040 {
9041         if (skb->encapsulation &&
9042             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9043              I40E_MAX_TUNNEL_HDR_LEN))
9044                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9045
9046         return features;
9047 }
9048
9049 static const struct net_device_ops i40e_netdev_ops = {
9050         .ndo_open               = i40e_open,
9051         .ndo_stop               = i40e_close,
9052         .ndo_start_xmit         = i40e_lan_xmit_frame,
9053         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9054         .ndo_set_rx_mode        = i40e_set_rx_mode,
9055         .ndo_validate_addr      = eth_validate_addr,
9056         .ndo_set_mac_address    = i40e_set_mac,
9057         .ndo_change_mtu         = i40e_change_mtu,
9058         .ndo_do_ioctl           = i40e_ioctl,
9059         .ndo_tx_timeout         = i40e_tx_timeout,
9060         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9061         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9062 #ifdef CONFIG_NET_POLL_CONTROLLER
9063         .ndo_poll_controller    = i40e_netpoll,
9064 #endif
9065         .ndo_setup_tc           = __i40e_setup_tc,
9066 #ifdef I40E_FCOE
9067         .ndo_fcoe_enable        = i40e_fcoe_enable,
9068         .ndo_fcoe_disable       = i40e_fcoe_disable,
9069 #endif
9070         .ndo_set_features       = i40e_set_features,
9071         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9072         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9073         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9074         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9075         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9076         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9077 #if IS_ENABLED(CONFIG_VXLAN)
9078         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
9079         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
9080 #endif
9081 #if IS_ENABLED(CONFIG_GENEVE)
9082         .ndo_add_geneve_port    = i40e_add_geneve_port,
9083         .ndo_del_geneve_port    = i40e_del_geneve_port,
9084 #endif
9085         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9086         .ndo_fdb_add            = i40e_ndo_fdb_add,
9087         .ndo_features_check     = i40e_features_check,
9088         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9089         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9090 };
9091
9092 /**
9093  * i40e_config_netdev - Setup the netdev flags
9094  * @vsi: the VSI being configured
9095  *
9096  * Returns 0 on success, negative value on failure
9097  **/
9098 static int i40e_config_netdev(struct i40e_vsi *vsi)
9099 {
9100         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
9101         struct i40e_pf *pf = vsi->back;
9102         struct i40e_hw *hw = &pf->hw;
9103         struct i40e_netdev_priv *np;
9104         struct net_device *netdev;
9105         u8 mac_addr[ETH_ALEN];
9106         int etherdev_size;
9107
9108         etherdev_size = sizeof(struct i40e_netdev_priv);
9109         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9110         if (!netdev)
9111                 return -ENOMEM;
9112
9113         vsi->netdev = netdev;
9114         np = netdev_priv(netdev);
9115         np->vsi = vsi;
9116
9117         netdev->hw_enc_features |= NETIF_F_IP_CSUM             |
9118                                    NETIF_F_IPV6_CSUM           |
9119                                    NETIF_F_TSO                 |
9120                                    NETIF_F_TSO6                |
9121                                    NETIF_F_TSO_ECN             |
9122                                    NETIF_F_GSO_GRE             |
9123                                    NETIF_F_GSO_UDP_TUNNEL      |
9124                                    NETIF_F_GSO_UDP_TUNNEL_CSUM |
9125                                    0;
9126
9127         netdev->features = NETIF_F_SG                  |
9128                            NETIF_F_IP_CSUM             |
9129                            NETIF_F_SCTP_CRC            |
9130                            NETIF_F_HIGHDMA             |
9131                            NETIF_F_GSO_UDP_TUNNEL      |
9132                            NETIF_F_GSO_GRE             |
9133                            NETIF_F_HW_VLAN_CTAG_TX     |
9134                            NETIF_F_HW_VLAN_CTAG_RX     |
9135                            NETIF_F_HW_VLAN_CTAG_FILTER |
9136                            NETIF_F_IPV6_CSUM           |
9137                            NETIF_F_TSO                 |
9138                            NETIF_F_TSO_ECN             |
9139                            NETIF_F_TSO6                |
9140                            NETIF_F_RXCSUM              |
9141                            NETIF_F_RXHASH              |
9142                            0;
9143
9144         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9145                 netdev->features |= NETIF_F_NTUPLE;
9146         if (pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
9147                 netdev->features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9148
9149         /* copy netdev features into list of user selectable features */
9150         netdev->hw_features |= netdev->features;
9151
9152         if (vsi->type == I40E_VSI_MAIN) {
9153                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9154                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9155                 /* The following steps are necessary to prevent reception
9156                  * of tagged packets - some older NVM configurations load a
9157                  * default a MAC-VLAN filter that accepts any tagged packet
9158                  * which must be replaced by a normal filter.
9159                  */
9160                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
9161                         spin_lock_bh(&vsi->mac_filter_list_lock);
9162                         i40e_add_filter(vsi, mac_addr,
9163                                         I40E_VLAN_ANY, false, true);
9164                         spin_unlock_bh(&vsi->mac_filter_list_lock);
9165                 }
9166         } else {
9167                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9168                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9169                          pf->vsi[pf->lan_vsi]->netdev->name);
9170                 random_ether_addr(mac_addr);
9171
9172                 spin_lock_bh(&vsi->mac_filter_list_lock);
9173                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9174                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9175         }
9176
9177         spin_lock_bh(&vsi->mac_filter_list_lock);
9178         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9179         spin_unlock_bh(&vsi->mac_filter_list_lock);
9180
9181         ether_addr_copy(netdev->dev_addr, mac_addr);
9182         ether_addr_copy(netdev->perm_addr, mac_addr);
9183         /* vlan gets same features (except vlan offload)
9184          * after any tweaks for specific VSI types
9185          */
9186         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
9187                                                      NETIF_F_HW_VLAN_CTAG_RX |
9188                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
9189         netdev->priv_flags |= IFF_UNICAST_FLT;
9190         netdev->priv_flags |= IFF_SUPP_NOFCS;
9191         /* Setup netdev TC information */
9192         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9193
9194         netdev->netdev_ops = &i40e_netdev_ops;
9195         netdev->watchdog_timeo = 5 * HZ;
9196         i40e_set_ethtool_ops(netdev);
9197 #ifdef I40E_FCOE
9198         i40e_fcoe_config_netdev(netdev, vsi);
9199 #endif
9200
9201         return 0;
9202 }
9203
9204 /**
9205  * i40e_vsi_delete - Delete a VSI from the switch
9206  * @vsi: the VSI being removed
9207  *
9208  * Returns 0 on success, negative value on failure
9209  **/
9210 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9211 {
9212         /* remove default VSI is not allowed */
9213         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9214                 return;
9215
9216         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9217 }
9218
9219 /**
9220  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9221  * @vsi: the VSI being queried
9222  *
9223  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9224  **/
9225 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9226 {
9227         struct i40e_veb *veb;
9228         struct i40e_pf *pf = vsi->back;
9229
9230         /* Uplink is not a bridge so default to VEB */
9231         if (vsi->veb_idx == I40E_NO_VEB)
9232                 return 1;
9233
9234         veb = pf->veb[vsi->veb_idx];
9235         if (!veb) {
9236                 dev_info(&pf->pdev->dev,
9237                          "There is no veb associated with the bridge\n");
9238                 return -ENOENT;
9239         }
9240
9241         /* Uplink is a bridge in VEPA mode */
9242         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9243                 return 0;
9244         } else {
9245                 /* Uplink is a bridge in VEB mode */
9246                 return 1;
9247         }
9248
9249         /* VEPA is now default bridge, so return 0 */
9250         return 0;
9251 }
9252
9253 /**
9254  * i40e_add_vsi - Add a VSI to the switch
9255  * @vsi: the VSI being configured
9256  *
9257  * This initializes a VSI context depending on the VSI type to be added and
9258  * passes it down to the add_vsi aq command.
9259  **/
9260 static int i40e_add_vsi(struct i40e_vsi *vsi)
9261 {
9262         int ret = -ENODEV;
9263         u8 laa_macaddr[ETH_ALEN];
9264         bool found_laa_mac_filter = false;
9265         struct i40e_pf *pf = vsi->back;
9266         struct i40e_hw *hw = &pf->hw;
9267         struct i40e_vsi_context ctxt;
9268         struct i40e_mac_filter *f, *ftmp;
9269
9270         u8 enabled_tc = 0x1; /* TC0 enabled */
9271         int f_count = 0;
9272
9273         memset(&ctxt, 0, sizeof(ctxt));
9274         switch (vsi->type) {
9275         case I40E_VSI_MAIN:
9276                 /* The PF's main VSI is already setup as part of the
9277                  * device initialization, so we'll not bother with
9278                  * the add_vsi call, but we will retrieve the current
9279                  * VSI context.
9280                  */
9281                 ctxt.seid = pf->main_vsi_seid;
9282                 ctxt.pf_num = pf->hw.pf_id;
9283                 ctxt.vf_num = 0;
9284                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9285                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9286                 if (ret) {
9287                         dev_info(&pf->pdev->dev,
9288                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9289                                  i40e_stat_str(&pf->hw, ret),
9290                                  i40e_aq_str(&pf->hw,
9291                                              pf->hw.aq.asq_last_status));
9292                         return -ENOENT;
9293                 }
9294                 vsi->info = ctxt.info;
9295                 vsi->info.valid_sections = 0;
9296
9297                 vsi->seid = ctxt.seid;
9298                 vsi->id = ctxt.vsi_number;
9299
9300                 enabled_tc = i40e_pf_get_tc_map(pf);
9301
9302                 /* MFP mode setup queue map and update VSI */
9303                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9304                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9305                         memset(&ctxt, 0, sizeof(ctxt));
9306                         ctxt.seid = pf->main_vsi_seid;
9307                         ctxt.pf_num = pf->hw.pf_id;
9308                         ctxt.vf_num = 0;
9309                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9310                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9311                         if (ret) {
9312                                 dev_info(&pf->pdev->dev,
9313                                          "update vsi failed, err %s aq_err %s\n",
9314                                          i40e_stat_str(&pf->hw, ret),
9315                                          i40e_aq_str(&pf->hw,
9316                                                     pf->hw.aq.asq_last_status));
9317                                 ret = -ENOENT;
9318                                 goto err;
9319                         }
9320                         /* update the local VSI info queue map */
9321                         i40e_vsi_update_queue_map(vsi, &ctxt);
9322                         vsi->info.valid_sections = 0;
9323                 } else {
9324                         /* Default/Main VSI is only enabled for TC0
9325                          * reconfigure it to enable all TCs that are
9326                          * available on the port in SFP mode.
9327                          * For MFP case the iSCSI PF would use this
9328                          * flow to enable LAN+iSCSI TC.
9329                          */
9330                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9331                         if (ret) {
9332                                 dev_info(&pf->pdev->dev,
9333                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9334                                          enabled_tc,
9335                                          i40e_stat_str(&pf->hw, ret),
9336                                          i40e_aq_str(&pf->hw,
9337                                                     pf->hw.aq.asq_last_status));
9338                                 ret = -ENOENT;
9339                         }
9340                 }
9341                 break;
9342
9343         case I40E_VSI_FDIR:
9344                 ctxt.pf_num = hw->pf_id;
9345                 ctxt.vf_num = 0;
9346                 ctxt.uplink_seid = vsi->uplink_seid;
9347                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9348                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9349                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9350                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9351                         ctxt.info.valid_sections |=
9352                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9353                         ctxt.info.switch_id =
9354                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9355                 }
9356                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9357                 break;
9358
9359         case I40E_VSI_VMDQ2:
9360                 ctxt.pf_num = hw->pf_id;
9361                 ctxt.vf_num = 0;
9362                 ctxt.uplink_seid = vsi->uplink_seid;
9363                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9364                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9365
9366                 /* This VSI is connected to VEB so the switch_id
9367                  * should be set to zero by default.
9368                  */
9369                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9370                         ctxt.info.valid_sections |=
9371                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9372                         ctxt.info.switch_id =
9373                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9374                 }
9375
9376                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9377                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9378                 break;
9379
9380         case I40E_VSI_SRIOV:
9381                 ctxt.pf_num = hw->pf_id;
9382                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9383                 ctxt.uplink_seid = vsi->uplink_seid;
9384                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9385                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9386
9387                 /* This VSI is connected to VEB so the switch_id
9388                  * should be set to zero by default.
9389                  */
9390                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9391                         ctxt.info.valid_sections |=
9392                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9393                         ctxt.info.switch_id =
9394                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9395                 }
9396
9397                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9398                         ctxt.info.valid_sections |=
9399                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9400                         ctxt.info.queueing_opt_flags |=
9401                                                 I40E_AQ_VSI_QUE_OPT_TCP_ENA;
9402                 }
9403
9404                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9405                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9406                 if (pf->vf[vsi->vf_id].spoofchk) {
9407                         ctxt.info.valid_sections |=
9408                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9409                         ctxt.info.sec_flags |=
9410                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9411                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9412                 }
9413                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9414                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9415                 break;
9416
9417 #ifdef I40E_FCOE
9418         case I40E_VSI_FCOE:
9419                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9420                 if (ret) {
9421                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9422                         return ret;
9423                 }
9424                 break;
9425
9426 #endif /* I40E_FCOE */
9427         case I40E_VSI_IWARP:
9428                 /* send down message to iWARP */
9429                 break;
9430
9431         default:
9432                 return -ENODEV;
9433         }
9434
9435         if (vsi->type != I40E_VSI_MAIN) {
9436                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9437                 if (ret) {
9438                         dev_info(&vsi->back->pdev->dev,
9439                                  "add vsi failed, err %s aq_err %s\n",
9440                                  i40e_stat_str(&pf->hw, ret),
9441                                  i40e_aq_str(&pf->hw,
9442                                              pf->hw.aq.asq_last_status));
9443                         ret = -ENOENT;
9444                         goto err;
9445                 }
9446                 vsi->info = ctxt.info;
9447                 vsi->info.valid_sections = 0;
9448                 vsi->seid = ctxt.seid;
9449                 vsi->id = ctxt.vsi_number;
9450         }
9451
9452         spin_lock_bh(&vsi->mac_filter_list_lock);
9453         /* If macvlan filters already exist, force them to get loaded */
9454         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9455                 f->changed = true;
9456                 f_count++;
9457
9458                 /* Expected to have only one MAC filter entry for LAA in list */
9459                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9460                         ether_addr_copy(laa_macaddr, f->macaddr);
9461                         found_laa_mac_filter = true;
9462                 }
9463         }
9464         spin_unlock_bh(&vsi->mac_filter_list_lock);
9465
9466         if (found_laa_mac_filter) {
9467                 struct i40e_aqc_remove_macvlan_element_data element;
9468
9469                 memset(&element, 0, sizeof(element));
9470                 ether_addr_copy(element.mac_addr, laa_macaddr);
9471                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9472                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9473                                              &element, 1, NULL);
9474                 if (ret) {
9475                         /* some older FW has a different default */
9476                         element.flags |=
9477                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9478                         i40e_aq_remove_macvlan(hw, vsi->seid,
9479                                                &element, 1, NULL);
9480                 }
9481
9482                 i40e_aq_mac_address_write(hw,
9483                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9484                                           laa_macaddr, NULL);
9485         }
9486
9487         if (f_count) {
9488                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9489                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9490         }
9491
9492         /* Update VSI BW information */
9493         ret = i40e_vsi_get_bw_info(vsi);
9494         if (ret) {
9495                 dev_info(&pf->pdev->dev,
9496                          "couldn't get vsi bw info, err %s aq_err %s\n",
9497                          i40e_stat_str(&pf->hw, ret),
9498                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9499                 /* VSI is already added so not tearing that up */
9500                 ret = 0;
9501         }
9502
9503 err:
9504         return ret;
9505 }
9506
9507 /**
9508  * i40e_vsi_release - Delete a VSI and free its resources
9509  * @vsi: the VSI being removed
9510  *
9511  * Returns 0 on success or < 0 on error
9512  **/
9513 int i40e_vsi_release(struct i40e_vsi *vsi)
9514 {
9515         struct i40e_mac_filter *f, *ftmp;
9516         struct i40e_veb *veb = NULL;
9517         struct i40e_pf *pf;
9518         u16 uplink_seid;
9519         int i, n;
9520
9521         pf = vsi->back;
9522
9523         /* release of a VEB-owner or last VSI is not allowed */
9524         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9525                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9526                          vsi->seid, vsi->uplink_seid);
9527                 return -ENODEV;
9528         }
9529         if (vsi == pf->vsi[pf->lan_vsi] &&
9530             !test_bit(__I40E_DOWN, &pf->state)) {
9531                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9532                 return -ENODEV;
9533         }
9534
9535         uplink_seid = vsi->uplink_seid;
9536         if (vsi->type != I40E_VSI_SRIOV) {
9537                 if (vsi->netdev_registered) {
9538                         vsi->netdev_registered = false;
9539                         if (vsi->netdev) {
9540                                 /* results in a call to i40e_close() */
9541                                 unregister_netdev(vsi->netdev);
9542                         }
9543                 } else {
9544                         i40e_vsi_close(vsi);
9545                 }
9546                 i40e_vsi_disable_irq(vsi);
9547         }
9548
9549         spin_lock_bh(&vsi->mac_filter_list_lock);
9550         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9551                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9552                                 f->is_vf, f->is_netdev);
9553         spin_unlock_bh(&vsi->mac_filter_list_lock);
9554
9555         i40e_sync_vsi_filters(vsi);
9556
9557         i40e_vsi_delete(vsi);
9558         i40e_vsi_free_q_vectors(vsi);
9559         if (vsi->netdev) {
9560                 free_netdev(vsi->netdev);
9561                 vsi->netdev = NULL;
9562         }
9563         i40e_vsi_clear_rings(vsi);
9564         i40e_vsi_clear(vsi);
9565
9566         /* If this was the last thing on the VEB, except for the
9567          * controlling VSI, remove the VEB, which puts the controlling
9568          * VSI onto the next level down in the switch.
9569          *
9570          * Well, okay, there's one more exception here: don't remove
9571          * the orphan VEBs yet.  We'll wait for an explicit remove request
9572          * from up the network stack.
9573          */
9574         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9575                 if (pf->vsi[i] &&
9576                     pf->vsi[i]->uplink_seid == uplink_seid &&
9577                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9578                         n++;      /* count the VSIs */
9579                 }
9580         }
9581         for (i = 0; i < I40E_MAX_VEB; i++) {
9582                 if (!pf->veb[i])
9583                         continue;
9584                 if (pf->veb[i]->uplink_seid == uplink_seid)
9585                         n++;     /* count the VEBs */
9586                 if (pf->veb[i]->seid == uplink_seid)
9587                         veb = pf->veb[i];
9588         }
9589         if (n == 0 && veb && veb->uplink_seid != 0)
9590                 i40e_veb_release(veb);
9591
9592         return 0;
9593 }
9594
9595 /**
9596  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9597  * @vsi: ptr to the VSI
9598  *
9599  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9600  * corresponding SW VSI structure and initializes num_queue_pairs for the
9601  * newly allocated VSI.
9602  *
9603  * Returns 0 on success or negative on failure
9604  **/
9605 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9606 {
9607         int ret = -ENOENT;
9608         struct i40e_pf *pf = vsi->back;
9609
9610         if (vsi->q_vectors[0]) {
9611                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9612                          vsi->seid);
9613                 return -EEXIST;
9614         }
9615
9616         if (vsi->base_vector) {
9617                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9618                          vsi->seid, vsi->base_vector);
9619                 return -EEXIST;
9620         }
9621
9622         ret = i40e_vsi_alloc_q_vectors(vsi);
9623         if (ret) {
9624                 dev_info(&pf->pdev->dev,
9625                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9626                          vsi->num_q_vectors, vsi->seid, ret);
9627                 vsi->num_q_vectors = 0;
9628                 goto vector_setup_out;
9629         }
9630
9631         /* In Legacy mode, we do not have to get any other vector since we
9632          * piggyback on the misc/ICR0 for queue interrupts.
9633         */
9634         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9635                 return ret;
9636         if (vsi->num_q_vectors)
9637                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9638                                                  vsi->num_q_vectors, vsi->idx);
9639         if (vsi->base_vector < 0) {
9640                 dev_info(&pf->pdev->dev,
9641                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9642                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9643                 i40e_vsi_free_q_vectors(vsi);
9644                 ret = -ENOENT;
9645                 goto vector_setup_out;
9646         }
9647
9648 vector_setup_out:
9649         return ret;
9650 }
9651
9652 /**
9653  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9654  * @vsi: pointer to the vsi.
9655  *
9656  * This re-allocates a vsi's queue resources.
9657  *
9658  * Returns pointer to the successfully allocated and configured VSI sw struct
9659  * on success, otherwise returns NULL on failure.
9660  **/
9661 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9662 {
9663         struct i40e_pf *pf;
9664         u8 enabled_tc;
9665         int ret;
9666
9667         if (!vsi)
9668                 return NULL;
9669
9670         pf = vsi->back;
9671
9672         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9673         i40e_vsi_clear_rings(vsi);
9674
9675         i40e_vsi_free_arrays(vsi, false);
9676         i40e_set_num_rings_in_vsi(vsi);
9677         ret = i40e_vsi_alloc_arrays(vsi, false);
9678         if (ret)
9679                 goto err_vsi;
9680
9681         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9682         if (ret < 0) {
9683                 dev_info(&pf->pdev->dev,
9684                          "failed to get tracking for %d queues for VSI %d err %d\n",
9685                          vsi->alloc_queue_pairs, vsi->seid, ret);
9686                 goto err_vsi;
9687         }
9688         vsi->base_queue = ret;
9689
9690         /* Update the FW view of the VSI. Force a reset of TC and queue
9691          * layout configurations.
9692          */
9693         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9694         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9695         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9696         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9697
9698         /* assign it some queues */
9699         ret = i40e_alloc_rings(vsi);
9700         if (ret)
9701                 goto err_rings;
9702
9703         /* map all of the rings to the q_vectors */
9704         i40e_vsi_map_rings_to_vectors(vsi);
9705         return vsi;
9706
9707 err_rings:
9708         i40e_vsi_free_q_vectors(vsi);
9709         if (vsi->netdev_registered) {
9710                 vsi->netdev_registered = false;
9711                 unregister_netdev(vsi->netdev);
9712                 free_netdev(vsi->netdev);
9713                 vsi->netdev = NULL;
9714         }
9715         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9716 err_vsi:
9717         i40e_vsi_clear(vsi);
9718         return NULL;
9719 }
9720
9721 /**
9722  * i40e_macaddr_init - explicitly write the mac address filters.
9723  *
9724  * @vsi: pointer to the vsi.
9725  * @macaddr: the MAC address
9726  *
9727  * This is needed when the macaddr has been obtained by other
9728  * means than the default, e.g., from Open Firmware or IDPROM.
9729  * Returns 0 on success, negative on failure
9730  **/
9731 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9732 {
9733         int ret;
9734         struct i40e_aqc_add_macvlan_element_data element;
9735
9736         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9737                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9738                                         macaddr, NULL);
9739         if (ret) {
9740                 dev_info(&vsi->back->pdev->dev,
9741                          "Addr change for VSI failed: %d\n", ret);
9742                 return -EADDRNOTAVAIL;
9743         }
9744
9745         memset(&element, 0, sizeof(element));
9746         ether_addr_copy(element.mac_addr, macaddr);
9747         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9748         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9749         if (ret) {
9750                 dev_info(&vsi->back->pdev->dev,
9751                          "add filter failed err %s aq_err %s\n",
9752                          i40e_stat_str(&vsi->back->hw, ret),
9753                          i40e_aq_str(&vsi->back->hw,
9754                                      vsi->back->hw.aq.asq_last_status));
9755         }
9756         return ret;
9757 }
9758
9759 /**
9760  * i40e_vsi_setup - Set up a VSI by a given type
9761  * @pf: board private structure
9762  * @type: VSI type
9763  * @uplink_seid: the switch element to link to
9764  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9765  *
9766  * This allocates the sw VSI structure and its queue resources, then add a VSI
9767  * to the identified VEB.
9768  *
9769  * Returns pointer to the successfully allocated and configure VSI sw struct on
9770  * success, otherwise returns NULL on failure.
9771  **/
9772 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9773                                 u16 uplink_seid, u32 param1)
9774 {
9775         struct i40e_vsi *vsi = NULL;
9776         struct i40e_veb *veb = NULL;
9777         int ret, i;
9778         int v_idx;
9779
9780         /* The requested uplink_seid must be either
9781          *     - the PF's port seid
9782          *              no VEB is needed because this is the PF
9783          *              or this is a Flow Director special case VSI
9784          *     - seid of an existing VEB
9785          *     - seid of a VSI that owns an existing VEB
9786          *     - seid of a VSI that doesn't own a VEB
9787          *              a new VEB is created and the VSI becomes the owner
9788          *     - seid of the PF VSI, which is what creates the first VEB
9789          *              this is a special case of the previous
9790          *
9791          * Find which uplink_seid we were given and create a new VEB if needed
9792          */
9793         for (i = 0; i < I40E_MAX_VEB; i++) {
9794                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9795                         veb = pf->veb[i];
9796                         break;
9797                 }
9798         }
9799
9800         if (!veb && uplink_seid != pf->mac_seid) {
9801
9802                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9803                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9804                                 vsi = pf->vsi[i];
9805                                 break;
9806                         }
9807                 }
9808                 if (!vsi) {
9809                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9810                                  uplink_seid);
9811                         return NULL;
9812                 }
9813
9814                 if (vsi->uplink_seid == pf->mac_seid)
9815                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9816                                              vsi->tc_config.enabled_tc);
9817                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9818                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9819                                              vsi->tc_config.enabled_tc);
9820                 if (veb) {
9821                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9822                                 dev_info(&vsi->back->pdev->dev,
9823                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9824                                 return NULL;
9825                         }
9826                         /* We come up by default in VEPA mode if SRIOV is not
9827                          * already enabled, in which case we can't force VEPA
9828                          * mode.
9829                          */
9830                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9831                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9832                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9833                         }
9834                         i40e_config_bridge_mode(veb);
9835                 }
9836                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9837                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9838                                 veb = pf->veb[i];
9839                 }
9840                 if (!veb) {
9841                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9842                         return NULL;
9843                 }
9844
9845                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9846                 uplink_seid = veb->seid;
9847         }
9848
9849         /* get vsi sw struct */
9850         v_idx = i40e_vsi_mem_alloc(pf, type);
9851         if (v_idx < 0)
9852                 goto err_alloc;
9853         vsi = pf->vsi[v_idx];
9854         if (!vsi)
9855                 goto err_alloc;
9856         vsi->type = type;
9857         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9858
9859         if (type == I40E_VSI_MAIN)
9860                 pf->lan_vsi = v_idx;
9861         else if (type == I40E_VSI_SRIOV)
9862                 vsi->vf_id = param1;
9863         /* assign it some queues */
9864         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9865                                 vsi->idx);
9866         if (ret < 0) {
9867                 dev_info(&pf->pdev->dev,
9868                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9869                          vsi->alloc_queue_pairs, vsi->seid, ret);
9870                 goto err_vsi;
9871         }
9872         vsi->base_queue = ret;
9873
9874         /* get a VSI from the hardware */
9875         vsi->uplink_seid = uplink_seid;
9876         ret = i40e_add_vsi(vsi);
9877         if (ret)
9878                 goto err_vsi;
9879
9880         switch (vsi->type) {
9881         /* setup the netdev if needed */
9882         case I40E_VSI_MAIN:
9883                 /* Apply relevant filters if a platform-specific mac
9884                  * address was selected.
9885                  */
9886                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9887                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9888                         if (ret) {
9889                                 dev_warn(&pf->pdev->dev,
9890                                          "could not set up macaddr; err %d\n",
9891                                          ret);
9892                         }
9893                 }
9894         case I40E_VSI_VMDQ2:
9895         case I40E_VSI_FCOE:
9896                 ret = i40e_config_netdev(vsi);
9897                 if (ret)
9898                         goto err_netdev;
9899                 ret = register_netdev(vsi->netdev);
9900                 if (ret)
9901                         goto err_netdev;
9902                 vsi->netdev_registered = true;
9903                 netif_carrier_off(vsi->netdev);
9904 #ifdef CONFIG_I40E_DCB
9905                 /* Setup DCB netlink interface */
9906                 i40e_dcbnl_setup(vsi);
9907 #endif /* CONFIG_I40E_DCB */
9908                 /* fall through */
9909
9910         case I40E_VSI_FDIR:
9911                 /* set up vectors and rings if needed */
9912                 ret = i40e_vsi_setup_vectors(vsi);
9913                 if (ret)
9914                         goto err_msix;
9915
9916                 ret = i40e_alloc_rings(vsi);
9917                 if (ret)
9918                         goto err_rings;
9919
9920                 /* map all of the rings to the q_vectors */
9921                 i40e_vsi_map_rings_to_vectors(vsi);
9922
9923                 i40e_vsi_reset_stats(vsi);
9924                 break;
9925
9926         default:
9927                 /* no netdev or rings for the other VSI types */
9928                 break;
9929         }
9930
9931         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9932             (vsi->type == I40E_VSI_VMDQ2)) {
9933                 ret = i40e_vsi_config_rss(vsi);
9934         }
9935         return vsi;
9936
9937 err_rings:
9938         i40e_vsi_free_q_vectors(vsi);
9939 err_msix:
9940         if (vsi->netdev_registered) {
9941                 vsi->netdev_registered = false;
9942                 unregister_netdev(vsi->netdev);
9943                 free_netdev(vsi->netdev);
9944                 vsi->netdev = NULL;
9945         }
9946 err_netdev:
9947         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9948 err_vsi:
9949         i40e_vsi_clear(vsi);
9950 err_alloc:
9951         return NULL;
9952 }
9953
9954 /**
9955  * i40e_veb_get_bw_info - Query VEB BW information
9956  * @veb: the veb to query
9957  *
9958  * Query the Tx scheduler BW configuration data for given VEB
9959  **/
9960 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9961 {
9962         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9963         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9964         struct i40e_pf *pf = veb->pf;
9965         struct i40e_hw *hw = &pf->hw;
9966         u32 tc_bw_max;
9967         int ret = 0;
9968         int i;
9969
9970         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9971                                                   &bw_data, NULL);
9972         if (ret) {
9973                 dev_info(&pf->pdev->dev,
9974                          "query veb bw config failed, err %s aq_err %s\n",
9975                          i40e_stat_str(&pf->hw, ret),
9976                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9977                 goto out;
9978         }
9979
9980         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9981                                                    &ets_data, NULL);
9982         if (ret) {
9983                 dev_info(&pf->pdev->dev,
9984                          "query veb bw ets config failed, err %s aq_err %s\n",
9985                          i40e_stat_str(&pf->hw, ret),
9986                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9987                 goto out;
9988         }
9989
9990         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9991         veb->bw_max_quanta = ets_data.tc_bw_max;
9992         veb->is_abs_credits = bw_data.absolute_credits_enable;
9993         veb->enabled_tc = ets_data.tc_valid_bits;
9994         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9995                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9996         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9997                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9998                 veb->bw_tc_limit_credits[i] =
9999                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
10000                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
10001         }
10002
10003 out:
10004         return ret;
10005 }
10006
10007 /**
10008  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
10009  * @pf: board private structure
10010  *
10011  * On error: returns error code (negative)
10012  * On success: returns vsi index in PF (positive)
10013  **/
10014 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
10015 {
10016         int ret = -ENOENT;
10017         struct i40e_veb *veb;
10018         int i;
10019
10020         /* Need to protect the allocation of switch elements at the PF level */
10021         mutex_lock(&pf->switch_mutex);
10022
10023         /* VEB list may be fragmented if VEB creation/destruction has
10024          * been happening.  We can afford to do a quick scan to look
10025          * for any free slots in the list.
10026          *
10027          * find next empty veb slot, looping back around if necessary
10028          */
10029         i = 0;
10030         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
10031                 i++;
10032         if (i >= I40E_MAX_VEB) {
10033                 ret = -ENOMEM;
10034                 goto err_alloc_veb;  /* out of VEB slots! */
10035         }
10036
10037         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10038         if (!veb) {
10039                 ret = -ENOMEM;
10040                 goto err_alloc_veb;
10041         }
10042         veb->pf = pf;
10043         veb->idx = i;
10044         veb->enabled_tc = 1;
10045
10046         pf->veb[i] = veb;
10047         ret = i;
10048 err_alloc_veb:
10049         mutex_unlock(&pf->switch_mutex);
10050         return ret;
10051 }
10052
10053 /**
10054  * i40e_switch_branch_release - Delete a branch of the switch tree
10055  * @branch: where to start deleting
10056  *
10057  * This uses recursion to find the tips of the branch to be
10058  * removed, deleting until we get back to and can delete this VEB.
10059  **/
10060 static void i40e_switch_branch_release(struct i40e_veb *branch)
10061 {
10062         struct i40e_pf *pf = branch->pf;
10063         u16 branch_seid = branch->seid;
10064         u16 veb_idx = branch->idx;
10065         int i;
10066
10067         /* release any VEBs on this VEB - RECURSION */
10068         for (i = 0; i < I40E_MAX_VEB; i++) {
10069                 if (!pf->veb[i])
10070                         continue;
10071                 if (pf->veb[i]->uplink_seid == branch->seid)
10072                         i40e_switch_branch_release(pf->veb[i]);
10073         }
10074
10075         /* Release the VSIs on this VEB, but not the owner VSI.
10076          *
10077          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10078          *       the VEB itself, so don't use (*branch) after this loop.
10079          */
10080         for (i = 0; i < pf->num_alloc_vsi; i++) {
10081                 if (!pf->vsi[i])
10082                         continue;
10083                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10084                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10085                         i40e_vsi_release(pf->vsi[i]);
10086                 }
10087         }
10088
10089         /* There's one corner case where the VEB might not have been
10090          * removed, so double check it here and remove it if needed.
10091          * This case happens if the veb was created from the debugfs
10092          * commands and no VSIs were added to it.
10093          */
10094         if (pf->veb[veb_idx])
10095                 i40e_veb_release(pf->veb[veb_idx]);
10096 }
10097
10098 /**
10099  * i40e_veb_clear - remove veb struct
10100  * @veb: the veb to remove
10101  **/
10102 static void i40e_veb_clear(struct i40e_veb *veb)
10103 {
10104         if (!veb)
10105                 return;
10106
10107         if (veb->pf) {
10108                 struct i40e_pf *pf = veb->pf;
10109
10110                 mutex_lock(&pf->switch_mutex);
10111                 if (pf->veb[veb->idx] == veb)
10112                         pf->veb[veb->idx] = NULL;
10113                 mutex_unlock(&pf->switch_mutex);
10114         }
10115
10116         kfree(veb);
10117 }
10118
10119 /**
10120  * i40e_veb_release - Delete a VEB and free its resources
10121  * @veb: the VEB being removed
10122  **/
10123 void i40e_veb_release(struct i40e_veb *veb)
10124 {
10125         struct i40e_vsi *vsi = NULL;
10126         struct i40e_pf *pf;
10127         int i, n = 0;
10128
10129         pf = veb->pf;
10130
10131         /* find the remaining VSI and check for extras */
10132         for (i = 0; i < pf->num_alloc_vsi; i++) {
10133                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10134                         n++;
10135                         vsi = pf->vsi[i];
10136                 }
10137         }
10138         if (n != 1) {
10139                 dev_info(&pf->pdev->dev,
10140                          "can't remove VEB %d with %d VSIs left\n",
10141                          veb->seid, n);
10142                 return;
10143         }
10144
10145         /* move the remaining VSI to uplink veb */
10146         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10147         if (veb->uplink_seid) {
10148                 vsi->uplink_seid = veb->uplink_seid;
10149                 if (veb->uplink_seid == pf->mac_seid)
10150                         vsi->veb_idx = I40E_NO_VEB;
10151                 else
10152                         vsi->veb_idx = veb->veb_idx;
10153         } else {
10154                 /* floating VEB */
10155                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10156                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10157         }
10158
10159         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10160         i40e_veb_clear(veb);
10161 }
10162
10163 /**
10164  * i40e_add_veb - create the VEB in the switch
10165  * @veb: the VEB to be instantiated
10166  * @vsi: the controlling VSI
10167  **/
10168 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10169 {
10170         struct i40e_pf *pf = veb->pf;
10171         bool is_default = veb->pf->cur_promisc;
10172         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10173         int ret;
10174
10175         /* get a VEB from the hardware */
10176         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10177                               veb->enabled_tc, is_default,
10178                               &veb->seid, enable_stats, NULL);
10179         if (ret) {
10180                 dev_info(&pf->pdev->dev,
10181                          "couldn't add VEB, err %s aq_err %s\n",
10182                          i40e_stat_str(&pf->hw, ret),
10183                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10184                 return -EPERM;
10185         }
10186
10187         /* get statistics counter */
10188         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10189                                          &veb->stats_idx, NULL, NULL, NULL);
10190         if (ret) {
10191                 dev_info(&pf->pdev->dev,
10192                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10193                          i40e_stat_str(&pf->hw, ret),
10194                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10195                 return -EPERM;
10196         }
10197         ret = i40e_veb_get_bw_info(veb);
10198         if (ret) {
10199                 dev_info(&pf->pdev->dev,
10200                          "couldn't get VEB bw info, err %s aq_err %s\n",
10201                          i40e_stat_str(&pf->hw, ret),
10202                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10203                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10204                 return -ENOENT;
10205         }
10206
10207         vsi->uplink_seid = veb->seid;
10208         vsi->veb_idx = veb->idx;
10209         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10210
10211         return 0;
10212 }
10213
10214 /**
10215  * i40e_veb_setup - Set up a VEB
10216  * @pf: board private structure
10217  * @flags: VEB setup flags
10218  * @uplink_seid: the switch element to link to
10219  * @vsi_seid: the initial VSI seid
10220  * @enabled_tc: Enabled TC bit-map
10221  *
10222  * This allocates the sw VEB structure and links it into the switch
10223  * It is possible and legal for this to be a duplicate of an already
10224  * existing VEB.  It is also possible for both uplink and vsi seids
10225  * to be zero, in order to create a floating VEB.
10226  *
10227  * Returns pointer to the successfully allocated VEB sw struct on
10228  * success, otherwise returns NULL on failure.
10229  **/
10230 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10231                                 u16 uplink_seid, u16 vsi_seid,
10232                                 u8 enabled_tc)
10233 {
10234         struct i40e_veb *veb, *uplink_veb = NULL;
10235         int vsi_idx, veb_idx;
10236         int ret;
10237
10238         /* if one seid is 0, the other must be 0 to create a floating relay */
10239         if ((uplink_seid == 0 || vsi_seid == 0) &&
10240             (uplink_seid + vsi_seid != 0)) {
10241                 dev_info(&pf->pdev->dev,
10242                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10243                          uplink_seid, vsi_seid);
10244                 return NULL;
10245         }
10246
10247         /* make sure there is such a vsi and uplink */
10248         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10249                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10250                         break;
10251         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10252                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10253                          vsi_seid);
10254                 return NULL;
10255         }
10256
10257         if (uplink_seid && uplink_seid != pf->mac_seid) {
10258                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10259                         if (pf->veb[veb_idx] &&
10260                             pf->veb[veb_idx]->seid == uplink_seid) {
10261                                 uplink_veb = pf->veb[veb_idx];
10262                                 break;
10263                         }
10264                 }
10265                 if (!uplink_veb) {
10266                         dev_info(&pf->pdev->dev,
10267                                  "uplink seid %d not found\n", uplink_seid);
10268                         return NULL;
10269                 }
10270         }
10271
10272         /* get veb sw struct */
10273         veb_idx = i40e_veb_mem_alloc(pf);
10274         if (veb_idx < 0)
10275                 goto err_alloc;
10276         veb = pf->veb[veb_idx];
10277         veb->flags = flags;
10278         veb->uplink_seid = uplink_seid;
10279         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10280         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10281
10282         /* create the VEB in the switch */
10283         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10284         if (ret)
10285                 goto err_veb;
10286         if (vsi_idx == pf->lan_vsi)
10287                 pf->lan_veb = veb->idx;
10288
10289         return veb;
10290
10291 err_veb:
10292         i40e_veb_clear(veb);
10293 err_alloc:
10294         return NULL;
10295 }
10296
10297 /**
10298  * i40e_setup_pf_switch_element - set PF vars based on switch type
10299  * @pf: board private structure
10300  * @ele: element we are building info from
10301  * @num_reported: total number of elements
10302  * @printconfig: should we print the contents
10303  *
10304  * helper function to assist in extracting a few useful SEID values.
10305  **/
10306 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10307                                 struct i40e_aqc_switch_config_element_resp *ele,
10308                                 u16 num_reported, bool printconfig)
10309 {
10310         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10311         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10312         u8 element_type = ele->element_type;
10313         u16 seid = le16_to_cpu(ele->seid);
10314
10315         if (printconfig)
10316                 dev_info(&pf->pdev->dev,
10317                          "type=%d seid=%d uplink=%d downlink=%d\n",
10318                          element_type, seid, uplink_seid, downlink_seid);
10319
10320         switch (element_type) {
10321         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10322                 pf->mac_seid = seid;
10323                 break;
10324         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10325                 /* Main VEB? */
10326                 if (uplink_seid != pf->mac_seid)
10327                         break;
10328                 if (pf->lan_veb == I40E_NO_VEB) {
10329                         int v;
10330
10331                         /* find existing or else empty VEB */
10332                         for (v = 0; v < I40E_MAX_VEB; v++) {
10333                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10334                                         pf->lan_veb = v;
10335                                         break;
10336                                 }
10337                         }
10338                         if (pf->lan_veb == I40E_NO_VEB) {
10339                                 v = i40e_veb_mem_alloc(pf);
10340                                 if (v < 0)
10341                                         break;
10342                                 pf->lan_veb = v;
10343                         }
10344                 }
10345
10346                 pf->veb[pf->lan_veb]->seid = seid;
10347                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10348                 pf->veb[pf->lan_veb]->pf = pf;
10349                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10350                 break;
10351         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10352                 if (num_reported != 1)
10353                         break;
10354                 /* This is immediately after a reset so we can assume this is
10355                  * the PF's VSI
10356                  */
10357                 pf->mac_seid = uplink_seid;
10358                 pf->pf_seid = downlink_seid;
10359                 pf->main_vsi_seid = seid;
10360                 if (printconfig)
10361                         dev_info(&pf->pdev->dev,
10362                                  "pf_seid=%d main_vsi_seid=%d\n",
10363                                  pf->pf_seid, pf->main_vsi_seid);
10364                 break;
10365         case I40E_SWITCH_ELEMENT_TYPE_PF:
10366         case I40E_SWITCH_ELEMENT_TYPE_VF:
10367         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10368         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10369         case I40E_SWITCH_ELEMENT_TYPE_PE:
10370         case I40E_SWITCH_ELEMENT_TYPE_PA:
10371                 /* ignore these for now */
10372                 break;
10373         default:
10374                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10375                          element_type, seid);
10376                 break;
10377         }
10378 }
10379
10380 /**
10381  * i40e_fetch_switch_configuration - Get switch config from firmware
10382  * @pf: board private structure
10383  * @printconfig: should we print the contents
10384  *
10385  * Get the current switch configuration from the device and
10386  * extract a few useful SEID values.
10387  **/
10388 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10389 {
10390         struct i40e_aqc_get_switch_config_resp *sw_config;
10391         u16 next_seid = 0;
10392         int ret = 0;
10393         u8 *aq_buf;
10394         int i;
10395
10396         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10397         if (!aq_buf)
10398                 return -ENOMEM;
10399
10400         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10401         do {
10402                 u16 num_reported, num_total;
10403
10404                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10405                                                 I40E_AQ_LARGE_BUF,
10406                                                 &next_seid, NULL);
10407                 if (ret) {
10408                         dev_info(&pf->pdev->dev,
10409                                  "get switch config failed err %s aq_err %s\n",
10410                                  i40e_stat_str(&pf->hw, ret),
10411                                  i40e_aq_str(&pf->hw,
10412                                              pf->hw.aq.asq_last_status));
10413                         kfree(aq_buf);
10414                         return -ENOENT;
10415                 }
10416
10417                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10418                 num_total = le16_to_cpu(sw_config->header.num_total);
10419
10420                 if (printconfig)
10421                         dev_info(&pf->pdev->dev,
10422                                  "header: %d reported %d total\n",
10423                                  num_reported, num_total);
10424
10425                 for (i = 0; i < num_reported; i++) {
10426                         struct i40e_aqc_switch_config_element_resp *ele =
10427                                 &sw_config->element[i];
10428
10429                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10430                                                      printconfig);
10431                 }
10432         } while (next_seid != 0);
10433
10434         kfree(aq_buf);
10435         return ret;
10436 }
10437
10438 /**
10439  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10440  * @pf: board private structure
10441  * @reinit: if the Main VSI needs to re-initialized.
10442  *
10443  * Returns 0 on success, negative value on failure
10444  **/
10445 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10446 {
10447         int ret;
10448
10449         /* find out what's out there already */
10450         ret = i40e_fetch_switch_configuration(pf, false);
10451         if (ret) {
10452                 dev_info(&pf->pdev->dev,
10453                          "couldn't fetch switch config, err %s aq_err %s\n",
10454                          i40e_stat_str(&pf->hw, ret),
10455                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10456                 return ret;
10457         }
10458         i40e_pf_reset_stats(pf);
10459
10460         /* first time setup */
10461         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10462                 struct i40e_vsi *vsi = NULL;
10463                 u16 uplink_seid;
10464
10465                 /* Set up the PF VSI associated with the PF's main VSI
10466                  * that is already in the HW switch
10467                  */
10468                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10469                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10470                 else
10471                         uplink_seid = pf->mac_seid;
10472                 if (pf->lan_vsi == I40E_NO_VSI)
10473                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10474                 else if (reinit)
10475                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10476                 if (!vsi) {
10477                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10478                         i40e_fdir_teardown(pf);
10479                         return -EAGAIN;
10480                 }
10481         } else {
10482                 /* force a reset of TC and queue layout configurations */
10483                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10484
10485                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10486                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10487                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10488         }
10489         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10490
10491         i40e_fdir_sb_setup(pf);
10492
10493         /* Setup static PF queue filter control settings */
10494         ret = i40e_setup_pf_filter_control(pf);
10495         if (ret) {
10496                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10497                          ret);
10498                 /* Failure here should not stop continuing other steps */
10499         }
10500
10501         /* enable RSS in the HW, even for only one queue, as the stack can use
10502          * the hash
10503          */
10504         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10505                 i40e_pf_config_rss(pf);
10506
10507         /* fill in link information and enable LSE reporting */
10508         i40e_update_link_info(&pf->hw);
10509         i40e_link_event(pf);
10510
10511         /* Initialize user-specific link properties */
10512         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10513                                   I40E_AQ_AN_COMPLETED) ? true : false);
10514
10515         i40e_ptp_init(pf);
10516
10517         return ret;
10518 }
10519
10520 /**
10521  * i40e_determine_queue_usage - Work out queue distribution
10522  * @pf: board private structure
10523  **/
10524 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10525 {
10526         int queues_left;
10527
10528         pf->num_lan_qps = 0;
10529 #ifdef I40E_FCOE
10530         pf->num_fcoe_qps = 0;
10531 #endif
10532
10533         /* Find the max queues to be put into basic use.  We'll always be
10534          * using TC0, whether or not DCB is running, and TC0 will get the
10535          * big RSS set.
10536          */
10537         queues_left = pf->hw.func_caps.num_tx_qp;
10538
10539         if ((queues_left == 1) ||
10540             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10541                 /* one qp for PF, no queues for anything else */
10542                 queues_left = 0;
10543                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10544
10545                 /* make sure all the fancies are disabled */
10546                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10547                                I40E_FLAG_IWARP_ENABLED  |
10548 #ifdef I40E_FCOE
10549                                I40E_FLAG_FCOE_ENABLED   |
10550 #endif
10551                                I40E_FLAG_FD_SB_ENABLED  |
10552                                I40E_FLAG_FD_ATR_ENABLED |
10553                                I40E_FLAG_DCB_CAPABLE    |
10554                                I40E_FLAG_SRIOV_ENABLED  |
10555                                I40E_FLAG_VMDQ_ENABLED);
10556         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10557                                   I40E_FLAG_FD_SB_ENABLED |
10558                                   I40E_FLAG_FD_ATR_ENABLED |
10559                                   I40E_FLAG_DCB_CAPABLE))) {
10560                 /* one qp for PF */
10561                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10562                 queues_left -= pf->num_lan_qps;
10563
10564                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10565                                I40E_FLAG_IWARP_ENABLED  |
10566 #ifdef I40E_FCOE
10567                                I40E_FLAG_FCOE_ENABLED   |
10568 #endif
10569                                I40E_FLAG_FD_SB_ENABLED  |
10570                                I40E_FLAG_FD_ATR_ENABLED |
10571                                I40E_FLAG_DCB_ENABLED    |
10572                                I40E_FLAG_VMDQ_ENABLED);
10573         } else {
10574                 /* Not enough queues for all TCs */
10575                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10576                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10577                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10578                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10579                 }
10580                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10581                                         num_online_cpus());
10582                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10583                                         pf->hw.func_caps.num_tx_qp);
10584
10585                 queues_left -= pf->num_lan_qps;
10586         }
10587
10588 #ifdef I40E_FCOE
10589         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10590                 if (I40E_DEFAULT_FCOE <= queues_left) {
10591                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10592                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10593                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10594                 } else {
10595                         pf->num_fcoe_qps = 0;
10596                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10597                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10598                 }
10599
10600                 queues_left -= pf->num_fcoe_qps;
10601         }
10602
10603 #endif
10604         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10605                 if (queues_left > 1) {
10606                         queues_left -= 1; /* save 1 queue for FD */
10607                 } else {
10608                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10609                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10610                 }
10611         }
10612
10613         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10614             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10615                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10616                                         (queues_left / pf->num_vf_qps));
10617                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10618         }
10619
10620         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10621             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10622                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10623                                           (queues_left / pf->num_vmdq_qps));
10624                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10625         }
10626
10627         pf->queues_left = queues_left;
10628         dev_dbg(&pf->pdev->dev,
10629                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10630                 pf->hw.func_caps.num_tx_qp,
10631                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10632                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10633                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10634                 queues_left);
10635 #ifdef I40E_FCOE
10636         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10637 #endif
10638 }
10639
10640 /**
10641  * i40e_setup_pf_filter_control - Setup PF static filter control
10642  * @pf: PF to be setup
10643  *
10644  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10645  * settings. If PE/FCoE are enabled then it will also set the per PF
10646  * based filter sizes required for them. It also enables Flow director,
10647  * ethertype and macvlan type filter settings for the pf.
10648  *
10649  * Returns 0 on success, negative on failure
10650  **/
10651 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10652 {
10653         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10654
10655         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10656
10657         /* Flow Director is enabled */
10658         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10659                 settings->enable_fdir = true;
10660
10661         /* Ethtype and MACVLAN filters enabled for PF */
10662         settings->enable_ethtype = true;
10663         settings->enable_macvlan = true;
10664
10665         if (i40e_set_filter_control(&pf->hw, settings))
10666                 return -ENOENT;
10667
10668         return 0;
10669 }
10670
10671 #define INFO_STRING_LEN 255
10672 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10673 static void i40e_print_features(struct i40e_pf *pf)
10674 {
10675         struct i40e_hw *hw = &pf->hw;
10676         char *buf;
10677         int i;
10678
10679         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10680         if (!buf)
10681                 return;
10682
10683         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10684 #ifdef CONFIG_PCI_IOV
10685         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10686 #endif
10687         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
10688                       pf->hw.func_caps.num_vsis,
10689                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10690                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10691
10692         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10693                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10694         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10695                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10696         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10697                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10698                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10699         }
10700         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10701                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10702 #if IS_ENABLED(CONFIG_VXLAN)
10703         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10704 #endif
10705 #if IS_ENABLED(CONFIG_GENEVE)
10706         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10707 #endif
10708         if (pf->flags & I40E_FLAG_PTP)
10709                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10710 #ifdef I40E_FCOE
10711         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10712                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10713 #endif
10714         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10715                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10716         else
10717                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10718
10719         dev_info(&pf->pdev->dev, "%s\n", buf);
10720         kfree(buf);
10721         WARN_ON(i > INFO_STRING_LEN);
10722 }
10723
10724 /**
10725  * i40e_get_platform_mac_addr - get platform-specific MAC address
10726  *
10727  * @pdev: PCI device information struct
10728  * @pf: board private structure
10729  *
10730  * Look up the MAC address in Open Firmware  on systems that support it,
10731  * and use IDPROM on SPARC if no OF address is found. On return, the
10732  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10733  * has been selected.
10734  **/
10735 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10736 {
10737         pf->flags &= ~I40E_FLAG_PF_MAC;
10738         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10739                 pf->flags |= I40E_FLAG_PF_MAC;
10740 }
10741
10742 /**
10743  * i40e_probe - Device initialization routine
10744  * @pdev: PCI device information struct
10745  * @ent: entry in i40e_pci_tbl
10746  *
10747  * i40e_probe initializes a PF identified by a pci_dev structure.
10748  * The OS initialization, configuring of the PF private structure,
10749  * and a hardware reset occur.
10750  *
10751  * Returns 0 on success, negative on failure
10752  **/
10753 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10754 {
10755         struct i40e_aq_get_phy_abilities_resp abilities;
10756         struct i40e_pf *pf;
10757         struct i40e_hw *hw;
10758         static u16 pfs_found;
10759         u16 wol_nvm_bits;
10760         u16 link_status;
10761         int err;
10762         u32 val;
10763         u32 i;
10764         u8 set_fc_aq_fail;
10765
10766         err = pci_enable_device_mem(pdev);
10767         if (err)
10768                 return err;
10769
10770         /* set up for high or low dma */
10771         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10772         if (err) {
10773                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10774                 if (err) {
10775                         dev_err(&pdev->dev,
10776                                 "DMA configuration failed: 0x%x\n", err);
10777                         goto err_dma;
10778                 }
10779         }
10780
10781         /* set up pci connections */
10782         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10783                                            IORESOURCE_MEM), i40e_driver_name);
10784         if (err) {
10785                 dev_info(&pdev->dev,
10786                          "pci_request_selected_regions failed %d\n", err);
10787                 goto err_pci_reg;
10788         }
10789
10790         pci_enable_pcie_error_reporting(pdev);
10791         pci_set_master(pdev);
10792
10793         /* Now that we have a PCI connection, we need to do the
10794          * low level device setup.  This is primarily setting up
10795          * the Admin Queue structures and then querying for the
10796          * device's current profile information.
10797          */
10798         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10799         if (!pf) {
10800                 err = -ENOMEM;
10801                 goto err_pf_alloc;
10802         }
10803         pf->next_vsi = 0;
10804         pf->pdev = pdev;
10805         set_bit(__I40E_DOWN, &pf->state);
10806
10807         hw = &pf->hw;
10808         hw->back = pf;
10809
10810         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10811                                 I40E_MAX_CSR_SPACE);
10812
10813         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10814         if (!hw->hw_addr) {
10815                 err = -EIO;
10816                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10817                          (unsigned int)pci_resource_start(pdev, 0),
10818                          pf->ioremap_len, err);
10819                 goto err_ioremap;
10820         }
10821         hw->vendor_id = pdev->vendor;
10822         hw->device_id = pdev->device;
10823         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10824         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10825         hw->subsystem_device_id = pdev->subsystem_device;
10826         hw->bus.device = PCI_SLOT(pdev->devfn);
10827         hw->bus.func = PCI_FUNC(pdev->devfn);
10828         pf->instance = pfs_found;
10829
10830         if (debug != -1) {
10831                 pf->msg_enable = pf->hw.debug_mask;
10832                 pf->msg_enable = debug;
10833         }
10834
10835         /* do a special CORER for clearing PXE mode once at init */
10836         if (hw->revision_id == 0 &&
10837             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10838                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10839                 i40e_flush(hw);
10840                 msleep(200);
10841                 pf->corer_count++;
10842
10843                 i40e_clear_pxe_mode(hw);
10844         }
10845
10846         /* Reset here to make sure all is clean and to define PF 'n' */
10847         i40e_clear_hw(hw);
10848         err = i40e_pf_reset(hw);
10849         if (err) {
10850                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10851                 goto err_pf_reset;
10852         }
10853         pf->pfr_count++;
10854
10855         hw->aq.num_arq_entries = I40E_AQ_LEN;
10856         hw->aq.num_asq_entries = I40E_AQ_LEN;
10857         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10858         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10859         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10860
10861         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10862                  "%s-%s:misc",
10863                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10864
10865         err = i40e_init_shared_code(hw);
10866         if (err) {
10867                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10868                          err);
10869                 goto err_pf_reset;
10870         }
10871
10872         /* set up a default setting for link flow control */
10873         pf->hw.fc.requested_mode = I40E_FC_NONE;
10874
10875         /* set up the locks for the AQ, do this only once in probe
10876          * and destroy them only once in remove
10877          */
10878         mutex_init(&hw->aq.asq_mutex);
10879         mutex_init(&hw->aq.arq_mutex);
10880
10881         err = i40e_init_adminq(hw);
10882         if (err) {
10883                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10884                         dev_info(&pdev->dev,
10885                                  "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
10886                 else
10887                         dev_info(&pdev->dev,
10888                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10889
10890                 goto err_pf_reset;
10891         }
10892
10893         /* provide nvm, fw, api versions */
10894         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10895                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10896                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10897                  i40e_nvm_version_str(hw));
10898
10899         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10900             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10901                 dev_info(&pdev->dev,
10902                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
10903         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10904                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10905                 dev_info(&pdev->dev,
10906                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10907
10908         i40e_verify_eeprom(pf);
10909
10910         /* Rev 0 hardware was never productized */
10911         if (hw->revision_id < 1)
10912                 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");
10913
10914         i40e_clear_pxe_mode(hw);
10915         err = i40e_get_capabilities(pf);
10916         if (err)
10917                 goto err_adminq_setup;
10918
10919         err = i40e_sw_init(pf);
10920         if (err) {
10921                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10922                 goto err_sw_init;
10923         }
10924
10925         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10926                                 hw->func_caps.num_rx_qp,
10927                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10928         if (err) {
10929                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10930                 goto err_init_lan_hmc;
10931         }
10932
10933         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10934         if (err) {
10935                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10936                 err = -ENOENT;
10937                 goto err_configure_lan_hmc;
10938         }
10939
10940         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10941          * Ignore error return codes because if it was already disabled via
10942          * hardware settings this will fail
10943          */
10944         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10945                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10946                 i40e_aq_stop_lldp(hw, true, NULL);
10947         }
10948
10949         i40e_get_mac_addr(hw, hw->mac.addr);
10950         /* allow a platform config to override the HW addr */
10951         i40e_get_platform_mac_addr(pdev, pf);
10952         if (!is_valid_ether_addr(hw->mac.addr)) {
10953                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10954                 err = -EIO;
10955                 goto err_mac_addr;
10956         }
10957         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10958         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10959         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10960         if (is_valid_ether_addr(hw->mac.port_addr))
10961                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10962 #ifdef I40E_FCOE
10963         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10964         if (err)
10965                 dev_info(&pdev->dev,
10966                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10967         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10968                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10969                          hw->mac.san_addr);
10970                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10971         }
10972         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10973 #endif /* I40E_FCOE */
10974
10975         pci_set_drvdata(pdev, pf);
10976         pci_save_state(pdev);
10977 #ifdef CONFIG_I40E_DCB
10978         err = i40e_init_pf_dcb(pf);
10979         if (err) {
10980                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10981                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10982                 /* Continue without DCB enabled */
10983         }
10984 #endif /* CONFIG_I40E_DCB */
10985
10986         /* set up periodic task facility */
10987         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10988         pf->service_timer_period = HZ;
10989
10990         INIT_WORK(&pf->service_task, i40e_service_task);
10991         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10992         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10993
10994         /* NVM bit on means WoL disabled for the port */
10995         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10996         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10997                 pf->wol_en = false;
10998         else
10999                 pf->wol_en = true;
11000         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
11001
11002         /* set up the main switch operations */
11003         i40e_determine_queue_usage(pf);
11004         err = i40e_init_interrupt_scheme(pf);
11005         if (err)
11006                 goto err_switch_setup;
11007
11008         /* The number of VSIs reported by the FW is the minimum guaranteed
11009          * to us; HW supports far more and we share the remaining pool with
11010          * the other PFs. We allocate space for more than the guarantee with
11011          * the understanding that we might not get them all later.
11012          */
11013         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11014                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11015         else
11016                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11017
11018         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11019         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11020                           GFP_KERNEL);
11021         if (!pf->vsi) {
11022                 err = -ENOMEM;
11023                 goto err_switch_setup;
11024         }
11025
11026 #ifdef CONFIG_PCI_IOV
11027         /* prep for VF support */
11028         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11029             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11030             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11031                 if (pci_num_vf(pdev))
11032                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11033         }
11034 #endif
11035         err = i40e_setup_pf_switch(pf, false);
11036         if (err) {
11037                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11038                 goto err_vsis;
11039         }
11040
11041         /* Make sure flow control is set according to current settings */
11042         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11043         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11044                 dev_dbg(&pf->pdev->dev,
11045                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11046                         i40e_stat_str(hw, err),
11047                         i40e_aq_str(hw, hw->aq.asq_last_status));
11048         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11049                 dev_dbg(&pf->pdev->dev,
11050                         "Set fc with err %s aq_err %s on set_phy_config\n",
11051                         i40e_stat_str(hw, err),
11052                         i40e_aq_str(hw, hw->aq.asq_last_status));
11053         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11054                 dev_dbg(&pf->pdev->dev,
11055                         "Set fc with err %s aq_err %s on get_link_info\n",
11056                         i40e_stat_str(hw, err),
11057                         i40e_aq_str(hw, hw->aq.asq_last_status));
11058
11059         /* if FDIR VSI was set up, start it now */
11060         for (i = 0; i < pf->num_alloc_vsi; i++) {
11061                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11062                         i40e_vsi_open(pf->vsi[i]);
11063                         break;
11064                 }
11065         }
11066
11067         /* The driver only wants link up/down and module qualification
11068          * reports from firmware.  Note the negative logic.
11069          */
11070         err = i40e_aq_set_phy_int_mask(&pf->hw,
11071                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11072                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11073         if (err)
11074                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11075                          i40e_stat_str(&pf->hw, err),
11076                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11077
11078         /* Reconfigure hardware for allowing smaller MSS in the case
11079          * of TSO, so that we avoid the MDD being fired and causing
11080          * a reset in the case of small MSS+TSO.
11081          */
11082         val = rd32(hw, I40E_REG_MSS);
11083         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11084                 val &= ~I40E_REG_MSS_MIN_MASK;
11085                 val |= I40E_64BYTE_MSS;
11086                 wr32(hw, I40E_REG_MSS, val);
11087         }
11088
11089         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11090                 msleep(75);
11091                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11092                 if (err)
11093                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11094                                  i40e_stat_str(&pf->hw, err),
11095                                  i40e_aq_str(&pf->hw,
11096                                              pf->hw.aq.asq_last_status));
11097         }
11098         /* The main driver is (mostly) up and happy. We need to set this state
11099          * before setting up the misc vector or we get a race and the vector
11100          * ends up disabled forever.
11101          */
11102         clear_bit(__I40E_DOWN, &pf->state);
11103
11104         /* In case of MSIX we are going to setup the misc vector right here
11105          * to handle admin queue events etc. In case of legacy and MSI
11106          * the misc functionality and queue processing is combined in
11107          * the same vector and that gets setup at open.
11108          */
11109         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11110                 err = i40e_setup_misc_vector(pf);
11111                 if (err) {
11112                         dev_info(&pdev->dev,
11113                                  "setup of misc vector failed: %d\n", err);
11114                         goto err_vsis;
11115                 }
11116         }
11117
11118 #ifdef CONFIG_PCI_IOV
11119         /* prep for VF support */
11120         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11121             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11122             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11123                 /* disable link interrupts for VFs */
11124                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11125                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11126                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11127                 i40e_flush(hw);
11128
11129                 if (pci_num_vf(pdev)) {
11130                         dev_info(&pdev->dev,
11131                                  "Active VFs found, allocating resources.\n");
11132                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11133                         if (err)
11134                                 dev_info(&pdev->dev,
11135                                          "Error %d allocating resources for existing VFs\n",
11136                                          err);
11137                 }
11138         }
11139 #endif /* CONFIG_PCI_IOV */
11140
11141         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11142                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11143                                                       pf->num_iwarp_msix,
11144                                                       I40E_IWARP_IRQ_PILE_ID);
11145                 if (pf->iwarp_base_vector < 0) {
11146                         dev_info(&pdev->dev,
11147                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11148                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11149                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11150                 }
11151         }
11152
11153         i40e_dbg_pf_init(pf);
11154
11155         /* tell the firmware that we're starting */
11156         i40e_send_version(pf);
11157
11158         /* since everything's happy, start the service_task timer */
11159         mod_timer(&pf->service_timer,
11160                   round_jiffies(jiffies + pf->service_timer_period));
11161
11162         /* add this PF to client device list and launch a client service task */
11163         err = i40e_lan_add_device(pf);
11164         if (err)
11165                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11166                          err);
11167
11168 #ifdef I40E_FCOE
11169         /* create FCoE interface */
11170         i40e_fcoe_vsi_setup(pf);
11171
11172 #endif
11173 #define PCI_SPEED_SIZE 8
11174 #define PCI_WIDTH_SIZE 8
11175         /* Devices on the IOSF bus do not have this information
11176          * and will report PCI Gen 1 x 1 by default so don't bother
11177          * checking them.
11178          */
11179         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11180                 char speed[PCI_SPEED_SIZE] = "Unknown";
11181                 char width[PCI_WIDTH_SIZE] = "Unknown";
11182
11183                 /* Get the negotiated link width and speed from PCI config
11184                  * space
11185                  */
11186                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11187                                           &link_status);
11188
11189                 i40e_set_pci_config_data(hw, link_status);
11190
11191                 switch (hw->bus.speed) {
11192                 case i40e_bus_speed_8000:
11193                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11194                 case i40e_bus_speed_5000:
11195                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11196                 case i40e_bus_speed_2500:
11197                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11198                 default:
11199                         break;
11200                 }
11201                 switch (hw->bus.width) {
11202                 case i40e_bus_width_pcie_x8:
11203                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11204                 case i40e_bus_width_pcie_x4:
11205                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11206                 case i40e_bus_width_pcie_x2:
11207                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11208                 case i40e_bus_width_pcie_x1:
11209                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11210                 default:
11211                         break;
11212                 }
11213
11214                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11215                          speed, width);
11216
11217                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11218                     hw->bus.speed < i40e_bus_speed_8000) {
11219                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11220                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11221                 }
11222         }
11223
11224         /* get the requested speeds from the fw */
11225         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11226         if (err)
11227                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11228                         i40e_stat_str(&pf->hw, err),
11229                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11230         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11231
11232         /* get the supported phy types from the fw */
11233         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11234         if (err)
11235                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11236                         i40e_stat_str(&pf->hw, err),
11237                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11238         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11239
11240         /* Add a filter to drop all Flow control frames from any VSI from being
11241          * transmitted. By doing so we stop a malicious VF from sending out
11242          * PAUSE or PFC frames and potentially controlling traffic for other
11243          * PF/VF VSIs.
11244          * The FW can still send Flow control frames if enabled.
11245          */
11246         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11247                                                        pf->main_vsi_seid);
11248
11249         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11250             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11251                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11252
11253         /* print a string summarizing features */
11254         i40e_print_features(pf);
11255
11256         return 0;
11257
11258         /* Unwind what we've done if something failed in the setup */
11259 err_vsis:
11260         set_bit(__I40E_DOWN, &pf->state);
11261         i40e_clear_interrupt_scheme(pf);
11262         kfree(pf->vsi);
11263 err_switch_setup:
11264         i40e_reset_interrupt_capability(pf);
11265         del_timer_sync(&pf->service_timer);
11266 err_mac_addr:
11267 err_configure_lan_hmc:
11268         (void)i40e_shutdown_lan_hmc(hw);
11269 err_init_lan_hmc:
11270         kfree(pf->qp_pile);
11271 err_sw_init:
11272 err_adminq_setup:
11273         (void)i40e_shutdown_adminq(hw);
11274 err_pf_reset:
11275         iounmap(hw->hw_addr);
11276 err_ioremap:
11277         kfree(pf);
11278 err_pf_alloc:
11279         pci_disable_pcie_error_reporting(pdev);
11280         pci_release_selected_regions(pdev,
11281                                      pci_select_bars(pdev, IORESOURCE_MEM));
11282 err_pci_reg:
11283 err_dma:
11284         pci_disable_device(pdev);
11285         return err;
11286 }
11287
11288 /**
11289  * i40e_remove - Device removal routine
11290  * @pdev: PCI device information struct
11291  *
11292  * i40e_remove is called by the PCI subsystem to alert the driver
11293  * that is should release a PCI device.  This could be caused by a
11294  * Hot-Plug event, or because the driver is going to be removed from
11295  * memory.
11296  **/
11297 static void i40e_remove(struct pci_dev *pdev)
11298 {
11299         struct i40e_pf *pf = pci_get_drvdata(pdev);
11300         struct i40e_hw *hw = &pf->hw;
11301         i40e_status ret_code;
11302         int i;
11303
11304         i40e_dbg_pf_exit(pf);
11305
11306         i40e_ptp_stop(pf);
11307
11308         /* Disable RSS in hw */
11309         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11310         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11311
11312         /* no more scheduling of any task */
11313         set_bit(__I40E_SUSPENDED, &pf->state);
11314         set_bit(__I40E_DOWN, &pf->state);
11315         del_timer_sync(&pf->service_timer);
11316         cancel_work_sync(&pf->service_task);
11317
11318         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11319                 i40e_free_vfs(pf);
11320                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11321         }
11322
11323         i40e_fdir_teardown(pf);
11324
11325         /* If there is a switch structure or any orphans, remove them.
11326          * This will leave only the PF's VSI remaining.
11327          */
11328         for (i = 0; i < I40E_MAX_VEB; i++) {
11329                 if (!pf->veb[i])
11330                         continue;
11331
11332                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11333                     pf->veb[i]->uplink_seid == 0)
11334                         i40e_switch_branch_release(pf->veb[i]);
11335         }
11336
11337         /* Now we can shutdown the PF's VSI, just before we kill
11338          * adminq and hmc.
11339          */
11340         if (pf->vsi[pf->lan_vsi])
11341                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11342
11343         /* remove attached clients */
11344         ret_code = i40e_lan_del_device(pf);
11345         if (ret_code) {
11346                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11347                          ret_code);
11348         }
11349
11350         /* shutdown and destroy the HMC */
11351         if (hw->hmc.hmc_obj) {
11352                 ret_code = i40e_shutdown_lan_hmc(hw);
11353                 if (ret_code)
11354                         dev_warn(&pdev->dev,
11355                                  "Failed to destroy the HMC resources: %d\n",
11356                                  ret_code);
11357         }
11358
11359         /* shutdown the adminq */
11360         ret_code = i40e_shutdown_adminq(hw);
11361         if (ret_code)
11362                 dev_warn(&pdev->dev,
11363                          "Failed to destroy the Admin Queue resources: %d\n",
11364                          ret_code);
11365
11366         /* destroy the locks only once, here */
11367         mutex_destroy(&hw->aq.arq_mutex);
11368         mutex_destroy(&hw->aq.asq_mutex);
11369
11370         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11371         i40e_clear_interrupt_scheme(pf);
11372         for (i = 0; i < pf->num_alloc_vsi; i++) {
11373                 if (pf->vsi[i]) {
11374                         i40e_vsi_clear_rings(pf->vsi[i]);
11375                         i40e_vsi_clear(pf->vsi[i]);
11376                         pf->vsi[i] = NULL;
11377                 }
11378         }
11379
11380         for (i = 0; i < I40E_MAX_VEB; i++) {
11381                 kfree(pf->veb[i]);
11382                 pf->veb[i] = NULL;
11383         }
11384
11385         kfree(pf->qp_pile);
11386         kfree(pf->vsi);
11387
11388         iounmap(hw->hw_addr);
11389         kfree(pf);
11390         pci_release_selected_regions(pdev,
11391                                      pci_select_bars(pdev, IORESOURCE_MEM));
11392
11393         pci_disable_pcie_error_reporting(pdev);
11394         pci_disable_device(pdev);
11395 }
11396
11397 /**
11398  * i40e_pci_error_detected - warning that something funky happened in PCI land
11399  * @pdev: PCI device information struct
11400  *
11401  * Called to warn that something happened and the error handling steps
11402  * are in progress.  Allows the driver to quiesce things, be ready for
11403  * remediation.
11404  **/
11405 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11406                                                 enum pci_channel_state error)
11407 {
11408         struct i40e_pf *pf = pci_get_drvdata(pdev);
11409
11410         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11411
11412         /* shutdown all operations */
11413         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11414                 rtnl_lock();
11415                 i40e_prep_for_reset(pf);
11416                 rtnl_unlock();
11417         }
11418
11419         /* Request a slot reset */
11420         return PCI_ERS_RESULT_NEED_RESET;
11421 }
11422
11423 /**
11424  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11425  * @pdev: PCI device information struct
11426  *
11427  * Called to find if the driver can work with the device now that
11428  * the pci slot has been reset.  If a basic connection seems good
11429  * (registers are readable and have sane content) then return a
11430  * happy little PCI_ERS_RESULT_xxx.
11431  **/
11432 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11433 {
11434         struct i40e_pf *pf = pci_get_drvdata(pdev);
11435         pci_ers_result_t result;
11436         int err;
11437         u32 reg;
11438
11439         dev_dbg(&pdev->dev, "%s\n", __func__);
11440         if (pci_enable_device_mem(pdev)) {
11441                 dev_info(&pdev->dev,
11442                          "Cannot re-enable PCI device after reset.\n");
11443                 result = PCI_ERS_RESULT_DISCONNECT;
11444         } else {
11445                 pci_set_master(pdev);
11446                 pci_restore_state(pdev);
11447                 pci_save_state(pdev);
11448                 pci_wake_from_d3(pdev, false);
11449
11450                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11451                 if (reg == 0)
11452                         result = PCI_ERS_RESULT_RECOVERED;
11453                 else
11454                         result = PCI_ERS_RESULT_DISCONNECT;
11455         }
11456
11457         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11458         if (err) {
11459                 dev_info(&pdev->dev,
11460                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11461                          err);
11462                 /* non-fatal, continue */
11463         }
11464
11465         return result;
11466 }
11467
11468 /**
11469  * i40e_pci_error_resume - restart operations after PCI error recovery
11470  * @pdev: PCI device information struct
11471  *
11472  * Called to allow the driver to bring things back up after PCI error
11473  * and/or reset recovery has finished.
11474  **/
11475 static void i40e_pci_error_resume(struct pci_dev *pdev)
11476 {
11477         struct i40e_pf *pf = pci_get_drvdata(pdev);
11478
11479         dev_dbg(&pdev->dev, "%s\n", __func__);
11480         if (test_bit(__I40E_SUSPENDED, &pf->state))
11481                 return;
11482
11483         rtnl_lock();
11484         i40e_handle_reset_warning(pf);
11485         rtnl_unlock();
11486 }
11487
11488 /**
11489  * i40e_shutdown - PCI callback for shutting down
11490  * @pdev: PCI device information struct
11491  **/
11492 static void i40e_shutdown(struct pci_dev *pdev)
11493 {
11494         struct i40e_pf *pf = pci_get_drvdata(pdev);
11495         struct i40e_hw *hw = &pf->hw;
11496
11497         set_bit(__I40E_SUSPENDED, &pf->state);
11498         set_bit(__I40E_DOWN, &pf->state);
11499         rtnl_lock();
11500         i40e_prep_for_reset(pf);
11501         rtnl_unlock();
11502
11503         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11504         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11505
11506         del_timer_sync(&pf->service_timer);
11507         cancel_work_sync(&pf->service_task);
11508         i40e_fdir_teardown(pf);
11509
11510         rtnl_lock();
11511         i40e_prep_for_reset(pf);
11512         rtnl_unlock();
11513
11514         wr32(hw, I40E_PFPM_APM,
11515              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11516         wr32(hw, I40E_PFPM_WUFC,
11517              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11518
11519         i40e_clear_interrupt_scheme(pf);
11520
11521         if (system_state == SYSTEM_POWER_OFF) {
11522                 pci_wake_from_d3(pdev, pf->wol_en);
11523                 pci_set_power_state(pdev, PCI_D3hot);
11524         }
11525 }
11526
11527 #ifdef CONFIG_PM
11528 /**
11529  * i40e_suspend - PCI callback for moving to D3
11530  * @pdev: PCI device information struct
11531  **/
11532 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11533 {
11534         struct i40e_pf *pf = pci_get_drvdata(pdev);
11535         struct i40e_hw *hw = &pf->hw;
11536
11537         set_bit(__I40E_SUSPENDED, &pf->state);
11538         set_bit(__I40E_DOWN, &pf->state);
11539
11540         rtnl_lock();
11541         i40e_prep_for_reset(pf);
11542         rtnl_unlock();
11543
11544         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11545         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11546
11547         pci_wake_from_d3(pdev, pf->wol_en);
11548         pci_set_power_state(pdev, PCI_D3hot);
11549
11550         return 0;
11551 }
11552
11553 /**
11554  * i40e_resume - PCI callback for waking up from D3
11555  * @pdev: PCI device information struct
11556  **/
11557 static int i40e_resume(struct pci_dev *pdev)
11558 {
11559         struct i40e_pf *pf = pci_get_drvdata(pdev);
11560         u32 err;
11561
11562         pci_set_power_state(pdev, PCI_D0);
11563         pci_restore_state(pdev);
11564         /* pci_restore_state() clears dev->state_saves, so
11565          * call pci_save_state() again to restore it.
11566          */
11567         pci_save_state(pdev);
11568
11569         err = pci_enable_device_mem(pdev);
11570         if (err) {
11571                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11572                 return err;
11573         }
11574         pci_set_master(pdev);
11575
11576         /* no wakeup events while running */
11577         pci_wake_from_d3(pdev, false);
11578
11579         /* handling the reset will rebuild the device state */
11580         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11581                 clear_bit(__I40E_DOWN, &pf->state);
11582                 rtnl_lock();
11583                 i40e_reset_and_rebuild(pf, false);
11584                 rtnl_unlock();
11585         }
11586
11587         return 0;
11588 }
11589
11590 #endif
11591 static const struct pci_error_handlers i40e_err_handler = {
11592         .error_detected = i40e_pci_error_detected,
11593         .slot_reset = i40e_pci_error_slot_reset,
11594         .resume = i40e_pci_error_resume,
11595 };
11596
11597 static struct pci_driver i40e_driver = {
11598         .name     = i40e_driver_name,
11599         .id_table = i40e_pci_tbl,
11600         .probe    = i40e_probe,
11601         .remove   = i40e_remove,
11602 #ifdef CONFIG_PM
11603         .suspend  = i40e_suspend,
11604         .resume   = i40e_resume,
11605 #endif
11606         .shutdown = i40e_shutdown,
11607         .err_handler = &i40e_err_handler,
11608         .sriov_configure = i40e_pci_sriov_configure,
11609 };
11610
11611 /**
11612  * i40e_init_module - Driver registration routine
11613  *
11614  * i40e_init_module is the first routine called when the driver is
11615  * loaded. All it does is register with the PCI subsystem.
11616  **/
11617 static int __init i40e_init_module(void)
11618 {
11619         pr_info("%s: %s - version %s\n", i40e_driver_name,
11620                 i40e_driver_string, i40e_driver_version_str);
11621         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11622
11623         /* we will see if single thread per module is enough for now,
11624          * it can't be any worse than using the system workqueue which
11625          * was already single threaded
11626          */
11627         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11628         if (!i40e_wq) {
11629                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11630                 return -ENOMEM;
11631         }
11632
11633         i40e_dbg_init();
11634         return pci_register_driver(&i40e_driver);
11635 }
11636 module_init(i40e_init_module);
11637
11638 /**
11639  * i40e_exit_module - Driver exit cleanup routine
11640  *
11641  * i40e_exit_module is called just before the driver is removed
11642  * from memory.
11643  **/
11644 static void __exit i40e_exit_module(void)
11645 {
11646         pci_unregister_driver(&i40e_driver);
11647         destroy_workqueue(i40e_wq);
11648         i40e_dbg_exit();
11649 }
11650 module_exit(i40e_exit_module);