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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 25
  45 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  46              __stringify(DRV_VERSION_MINOR) "." \
  47              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  48 const char i40e_driver_version_str[] = DRV_VERSION;
  49 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  50
  51 /* a bit of forward declarations */
  52 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  53 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  54 static int i40e_add_vsi(struct i40e_vsi *vsi);
  55 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  56 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  57 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  58 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  59 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  91         /* required last entry */
  92         {0, }
  93 };
  94 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  95
  96 #define I40E_MAX_VF_COUNT 128
  97 static int debug = -1;
  98 module_param(debug, uint, 0);
  99 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
 100
 101 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 102 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 103 MODULE_LICENSE("GPL");
 104 MODULE_VERSION(DRV_VERSION);
 105
 106 static struct workqueue_struct *i40e_wq;
 107
 108 /**
 109  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 110  * @hw:   pointer to the HW structure
 111  * @mem:  ptr to mem struct to fill out
 112  * @size: size of memory requested
 113  * @alignment: what to align the allocation to
 114  **/
 115 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 116                             u64 size, u32 alignment)
 117 {
 118         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 119
 120         mem->size = ALIGN(size, alignment);
 121         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 122                                       &mem->pa, GFP_KERNEL);
 123         if (!mem->va)
 124                 return -ENOMEM;
 125
 126         return 0;
 127 }
 128
 129 /**
 130  * i40e_free_dma_mem_d - OS specific memory free for shared code
 131  * @hw:   pointer to the HW structure
 132  * @mem:  ptr to mem struct to free
 133  **/
 134 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 135 {
 136         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 137
 138         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 139         mem->va = NULL;
 140         mem->pa = 0;
 141         mem->size = 0;
 142
 143         return 0;
 144 }
 145
 146 /**
 147  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 148  * @hw:   pointer to the HW structure
 149  * @mem:  ptr to mem struct to fill out
 150  * @size: size of memory requested
 151  **/
 152 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 153                              u32 size)
 154 {
 155         mem->size = size;
 156         mem->va = kzalloc(size, GFP_KERNEL);
 157
 158         if (!mem->va)
 159                 return -ENOMEM;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_free_virt_mem_d - OS specific memory free for shared code
 166  * @hw:   pointer to the HW structure
 167  * @mem:  ptr to mem struct to free
 168  **/
 169 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 170 {
 171         /* it's ok to kfree a NULL pointer */
 172         kfree(mem->va);
 173         mem->va = NULL;
 174         mem->size = 0;
 175
 176         return 0;
 177 }
 178
 179 /**
 180  * i40e_get_lump - find a lump of free generic resource
 181  * @pf: board private structure
 182  * @pile: the pile of resource to search
 183  * @needed: the number of items needed
 184  * @id: an owner id to stick on the items assigned
 185  *
 186  * Returns the base item index of the lump, or negative for error
 187  *
 188  * The search_hint trick and lack of advanced fit-finding only work
 189  * because we're highly likely to have all the same size lump requests.
 190  * Linear search time and any fragmentation should be minimal.
 191  **/
 192 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 193                          u16 needed, u16 id)
 194 {
 195         int ret = -ENOMEM;
 196         int i, j;
 197
 198         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 199                 dev_info(&pf->pdev->dev,
 200                          "param err: pile=%p needed=%d id=0x%04x\n",
 201                          pile, needed, id);
 202                 return -EINVAL;
 203         }
 204
 205         /* start the linear search with an imperfect hint */
 206         i = pile->search_hint;
 207         while (i < pile->num_entries) {
 208                 /* skip already allocated entries */
 209                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 210                         i++;
 211                         continue;
 212                 }
 213
 214                 /* do we have enough in this lump? */
 215                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 216                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 217                                 break;
 218                 }
 219
 220                 if (j == needed) {
 221                         /* there was enough, so assign it to the requestor */
 222                         for (j = 0; j < needed; j++)
 223                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 224                         ret = i;
 225                         pile->search_hint = i + j;
 226                         break;
 227                 }
 228
 229                 /* not enough, so skip over it and continue looking */
 230                 i += j;
 231         }
 232
 233         return ret;
 234 }
 235
 236 /**
 237  * i40e_put_lump - return a lump of generic resource
 238  * @pile: the pile of resource to search
 239  * @index: the base item index
 240  * @id: the owner id of the items assigned
 241  *
 242  * Returns the count of items in the lump
 243  **/
 244 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 245 {
 246         int valid_id = (id | I40E_PILE_VALID_BIT);
 247         int count = 0;
 248         int i;
 249
 250         if (!pile || index >= pile->num_entries)
 251                 return -EINVAL;
 252
 253         for (i = index;
 254              i < pile->num_entries && pile->list[i] == valid_id;
 255              i++) {
 256                 pile->list[i] = 0;
 257                 count++;
 258         }
 259
 260         if (count && index < pile->search_hint)
 261                 pile->search_hint = index;
 262
 263         return count;
 264 }
 265
 266 /**
 267  * i40e_find_vsi_from_id - searches for the vsi with the given id
 268  * @pf - the pf structure to search for the vsi
 269  * @id - id of the vsi it is searching for
 270  **/
 271 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 272 {
 273         int i;
 274
 275         for (i = 0; i < pf->num_alloc_vsi; i++)
 276                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 277                         return pf->vsi[i];
 278
 279         return NULL;
 280 }
 281
 282 /**
 283  * i40e_service_event_schedule - Schedule the service task to wake up
 284  * @pf: board private structure
 285  *
 286  * If not already scheduled, this puts the task into the work queue
 287  **/
 288 void i40e_service_event_schedule(struct i40e_pf *pf)
 289 {
 290         if (!test_bit(__I40E_DOWN, &pf->state) &&
 291             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
 292                 queue_work(i40e_wq, &pf->service_task);
 293 }
 294
 295 /**
 296  * i40e_tx_timeout - Respond to a Tx Hang
 297  * @netdev: network interface device structure
 298  *
 299  * If any port has noticed a Tx timeout, it is likely that the whole
 300  * device is munged, not just the one netdev port, so go for the full
 301  * reset.
 302  **/
 303 #ifdef I40E_FCOE
 304 void i40e_tx_timeout(struct net_device *netdev)
 305 #else
 306 static void i40e_tx_timeout(struct net_device *netdev)
 307 #endif
 308 {
 309         struct i40e_netdev_priv *np = netdev_priv(netdev);
 310         struct i40e_vsi *vsi = np->vsi;
 311         struct i40e_pf *pf = vsi->back;
 312         struct i40e_ring *tx_ring = NULL;
 313         unsigned int i, hung_queue = 0;
 314         u32 head, val;
 315
 316         pf->tx_timeout_count++;
 317
 318         /* find the stopped queue the same way the stack does */
 319         for (i = 0; i < netdev->num_tx_queues; i++) {
 320                 struct netdev_queue *q;
 321                 unsigned long trans_start;
 322
 323                 q = netdev_get_tx_queue(netdev, i);
 324                 trans_start = q->trans_start;
 325                 if (netif_xmit_stopped(q) &&
 326                     time_after(jiffies,
 327                                (trans_start + netdev->watchdog_timeo))) {
 328                         hung_queue = i;
 329                         break;
 330                 }
 331         }
 332
 333         if (i == netdev->num_tx_queues) {
 334                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 335         } else {
 336                 /* now that we have an index, find the tx_ring struct */
 337                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 338                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 339                                 if (hung_queue ==
 340                                     vsi->tx_rings[i]->queue_index) {
 341                                         tx_ring = vsi->tx_rings[i];
 342                                         break;
 343                                 }
 344                         }
 345                 }
 346         }
 347
 348         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 349                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 350         else if (time_before(jiffies,
 351                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 352                 return;   /* don't do any new action before the next timeout */
 353
 354         if (tx_ring) {
 355                 head = i40e_get_head(tx_ring);
 356                 /* Read interrupt register */
 357                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 358                         val = rd32(&pf->hw,
 359                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 360                                                 tx_ring->vsi->base_vector - 1));
 361                 else
 362                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 363
 364                 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",
 365                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 366                             head, tx_ring->next_to_use,
 367                             readl(tx_ring->tail), val);
 368         }
 369
 370         pf->tx_timeout_last_recovery = jiffies;
 371         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 372                     pf->tx_timeout_recovery_level, hung_queue);
 373
 374         switch (pf->tx_timeout_recovery_level) {
 375         case 1:
 376                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 377                 break;
 378         case 2:
 379                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 380                 break;
 381         case 3:
 382                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 383                 break;
 384         default:
 385                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 386                 break;
 387         }
 388
 389         i40e_service_event_schedule(pf);
 390         pf->tx_timeout_recovery_level++;
 391 }
 392
 393 /**
 394  * i40e_get_vsi_stats_struct - Get System Network Statistics
 395  * @vsi: the VSI we care about
 396  *
 397  * Returns the address of the device statistics structure.
 398  * The statistics are actually updated from the service task.
 399  **/
 400 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 401 {
 402         return &vsi->net_stats;
 403 }
 404
 405 /**
 406  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 407  * @netdev: network interface device structure
 408  *
 409  * Returns the address of the device statistics structure.
 410  * The statistics are actually updated from the service task.
 411  **/
 412 #ifdef I40E_FCOE
 413 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 414                                              struct net_device *netdev,
 415                                              struct rtnl_link_stats64 *stats)
 416 #else
 417 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 418                                              struct net_device *netdev,
 419                                              struct rtnl_link_stats64 *stats)
 420 #endif
 421 {
 422         struct i40e_netdev_priv *np = netdev_priv(netdev);
 423         struct i40e_ring *tx_ring, *rx_ring;
 424         struct i40e_vsi *vsi = np->vsi;
 425         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 426         int i;
 427
 428         if (test_bit(__I40E_DOWN, &vsi->state))
 429                 return stats;
 430
 431         if (!vsi->tx_rings)
 432                 return stats;
 433
 434         rcu_read_lock();
 435         for (i = 0; i < vsi->num_queue_pairs; i++) {
 436                 u64 bytes, packets;
 437                 unsigned int start;
 438
 439                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 440                 if (!tx_ring)
 441                         continue;
 442
 443                 do {
 444                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 445                         packets = tx_ring->stats.packets;
 446                         bytes   = tx_ring->stats.bytes;
 447                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 448
 449                 stats->tx_packets += packets;
 450                 stats->tx_bytes   += bytes;
 451                 rx_ring = &tx_ring[1];
 452
 453                 do {
 454                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 455                         packets = rx_ring->stats.packets;
 456                         bytes   = rx_ring->stats.bytes;
 457                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 458
 459                 stats->rx_packets += packets;
 460                 stats->rx_bytes   += bytes;
 461         }
 462         rcu_read_unlock();
 463
 464         /* following stats updated by i40e_watchdog_subtask() */
 465         stats->multicast        = vsi_stats->multicast;
 466         stats->tx_errors        = vsi_stats->tx_errors;
 467         stats->tx_dropped       = vsi_stats->tx_dropped;
 468         stats->rx_errors        = vsi_stats->rx_errors;
 469         stats->rx_dropped       = vsi_stats->rx_dropped;
 470         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 471         stats->rx_length_errors = vsi_stats->rx_length_errors;
 472
 473         return stats;
 474 }
 475
 476 /**
 477  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 478  * @vsi: the VSI to have its stats reset
 479  **/
 480 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 481 {
 482         struct rtnl_link_stats64 *ns;
 483         int i;
 484
 485         if (!vsi)
 486                 return;
 487
 488         ns = i40e_get_vsi_stats_struct(vsi);
 489         memset(ns, 0, sizeof(*ns));
 490         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 491         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 492         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 493         if (vsi->rx_rings && vsi->rx_rings[0]) {
 494                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 495                         memset(&vsi->rx_rings[i]->stats, 0,
 496                                sizeof(vsi->rx_rings[i]->stats));
 497                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 498                                sizeof(vsi->rx_rings[i]->rx_stats));
 499                         memset(&vsi->tx_rings[i]->stats, 0,
 500                                sizeof(vsi->tx_rings[i]->stats));
 501                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 502                                sizeof(vsi->tx_rings[i]->tx_stats));
 503                 }
 504         }
 505         vsi->stat_offsets_loaded = false;
 506 }
 507
 508 /**
 509  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 510  * @pf: the PF to be reset
 511  **/
 512 void i40e_pf_reset_stats(struct i40e_pf *pf)
 513 {
 514         int i;
 515
 516         memset(&pf->stats, 0, sizeof(pf->stats));
 517         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 518         pf->stat_offsets_loaded = false;
 519
 520         for (i = 0; i < I40E_MAX_VEB; i++) {
 521                 if (pf->veb[i]) {
 522                         memset(&pf->veb[i]->stats, 0,
 523                                sizeof(pf->veb[i]->stats));
 524                         memset(&pf->veb[i]->stats_offsets, 0,
 525                                sizeof(pf->veb[i]->stats_offsets));
 526                         pf->veb[i]->stat_offsets_loaded = false;
 527                 }
 528         }
 529         pf->hw_csum_rx_error = 0;
 530 }
 531
 532 /**
 533  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 534  * @hw: ptr to the hardware info
 535  * @hireg: the high 32 bit reg to read
 536  * @loreg: the low 32 bit reg to read
 537  * @offset_loaded: has the initial offset been loaded yet
 538  * @offset: ptr to current offset value
 539  * @stat: ptr to the stat
 540  *
 541  * Since the device stats are not reset at PFReset, they likely will not
 542  * be zeroed when the driver starts.  We'll save the first values read
 543  * and use them as offsets to be subtracted from the raw values in order
 544  * to report stats that count from zero.  In the process, we also manage
 545  * the potential roll-over.
 546  **/
 547 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 548                                bool offset_loaded, u64 *offset, u64 *stat)
 549 {
 550         u64 new_data;
 551
 552         if (hw->device_id == I40E_DEV_ID_QEMU) {
 553                 new_data = rd32(hw, loreg);
 554                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 555         } else {
 556                 new_data = rd64(hw, loreg);
 557         }
 558         if (!offset_loaded)
 559                 *offset = new_data;
 560         if (likely(new_data >= *offset))
 561                 *stat = new_data - *offset;
 562         else
 563                 *stat = (new_data + BIT_ULL(48)) - *offset;
 564         *stat &= 0xFFFFFFFFFFFFULL;
 565 }
 566
 567 /**
 568  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 569  * @hw: ptr to the hardware info
 570  * @reg: the hw reg to read
 571  * @offset_loaded: has the initial offset been loaded yet
 572  * @offset: ptr to current offset value
 573  * @stat: ptr to the stat
 574  **/
 575 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 576                                bool offset_loaded, u64 *offset, u64 *stat)
 577 {
 578         u32 new_data;
 579
 580         new_data = rd32(hw, reg);
 581         if (!offset_loaded)
 582                 *offset = new_data;
 583         if (likely(new_data >= *offset))
 584                 *stat = (u32)(new_data - *offset);
 585         else
 586                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 587 }
 588
 589 /**
 590  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 591  * @vsi: the VSI to be updated
 592  **/
 593 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 594 {
 595         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 596         struct i40e_pf *pf = vsi->back;
 597         struct i40e_hw *hw = &pf->hw;
 598         struct i40e_eth_stats *oes;
 599         struct i40e_eth_stats *es;     /* device's eth stats */
 600
 601         es = &vsi->eth_stats;
 602         oes = &vsi->eth_stats_offsets;
 603
 604         /* Gather up the stats that the hw collects */
 605         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 606                            vsi->stat_offsets_loaded,
 607                            &oes->tx_errors, &es->tx_errors);
 608         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 609                            vsi->stat_offsets_loaded,
 610                            &oes->rx_discards, &es->rx_discards);
 611         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 614         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 615                            vsi->stat_offsets_loaded,
 616                            &oes->tx_errors, &es->tx_errors);
 617
 618         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 619                            I40E_GLV_GORCL(stat_idx),
 620                            vsi->stat_offsets_loaded,
 621                            &oes->rx_bytes, &es->rx_bytes);
 622         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 623                            I40E_GLV_UPRCL(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unicast, &es->rx_unicast);
 626         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 627                            I40E_GLV_MPRCL(stat_idx),
 628                            vsi->stat_offsets_loaded,
 629                            &oes->rx_multicast, &es->rx_multicast);
 630         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 631                            I40E_GLV_BPRCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 636                            I40E_GLV_GOTCL(stat_idx),
 637                            vsi->stat_offsets_loaded,
 638                            &oes->tx_bytes, &es->tx_bytes);
 639         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 640                            I40E_GLV_UPTCL(stat_idx),
 641                            vsi->stat_offsets_loaded,
 642                            &oes->tx_unicast, &es->tx_unicast);
 643         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 644                            I40E_GLV_MPTCL(stat_idx),
 645                            vsi->stat_offsets_loaded,
 646                            &oes->tx_multicast, &es->tx_multicast);
 647         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 648                            I40E_GLV_BPTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_broadcast, &es->tx_broadcast);
 651         vsi->stat_offsets_loaded = true;
 652 }
 653
 654 /**
 655  * i40e_update_veb_stats - Update Switch component statistics
 656  * @veb: the VEB being updated
 657  **/
 658 static void i40e_update_veb_stats(struct i40e_veb *veb)
 659 {
 660         struct i40e_pf *pf = veb->pf;
 661         struct i40e_hw *hw = &pf->hw;
 662         struct i40e_eth_stats *oes;
 663         struct i40e_eth_stats *es;     /* device's eth stats */
 664         struct i40e_veb_tc_stats *veb_oes;
 665         struct i40e_veb_tc_stats *veb_es;
 666         int i, idx = 0;
 667
 668         idx = veb->stats_idx;
 669         es = &veb->stats;
 670         oes = &veb->stats_offsets;
 671         veb_es = &veb->tc_stats;
 672         veb_oes = &veb->tc_stats_offsets;
 673
 674         /* Gather up the stats that the hw collects */
 675         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 676                            veb->stat_offsets_loaded,
 677                            &oes->tx_discards, &es->tx_discards);
 678         if (hw->revision_id > 0)
 679                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 680                                    veb->stat_offsets_loaded,
 681                                    &oes->rx_unknown_protocol,
 682                                    &es->rx_unknown_protocol);
 683         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 684                            veb->stat_offsets_loaded,
 685                            &oes->rx_bytes, &es->rx_bytes);
 686         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 687                            veb->stat_offsets_loaded,
 688                            &oes->rx_unicast, &es->rx_unicast);
 689         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->rx_multicast, &es->rx_multicast);
 692         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->rx_broadcast, &es->rx_broadcast);
 695
 696         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 697                            veb->stat_offsets_loaded,
 698                            &oes->tx_bytes, &es->tx_bytes);
 699         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->tx_unicast, &es->tx_unicast);
 702         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->tx_multicast, &es->tx_multicast);
 705         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->tx_broadcast, &es->tx_broadcast);
 708         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 709                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 710                                    I40E_GLVEBTC_RPCL(i, idx),
 711                                    veb->stat_offsets_loaded,
 712                                    &veb_oes->tc_rx_packets[i],
 713                                    &veb_es->tc_rx_packets[i]);
 714                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 715                                    I40E_GLVEBTC_RBCL(i, idx),
 716                                    veb->stat_offsets_loaded,
 717                                    &veb_oes->tc_rx_bytes[i],
 718                                    &veb_es->tc_rx_bytes[i]);
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 720                                    I40E_GLVEBTC_TPCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_tx_packets[i],
 723                                    &veb_es->tc_tx_packets[i]);
 724                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 725                                    I40E_GLVEBTC_TBCL(i, idx),
 726                                    veb->stat_offsets_loaded,
 727                                    &veb_oes->tc_tx_bytes[i],
 728                                    &veb_es->tc_tx_bytes[i]);
 729         }
 730         veb->stat_offsets_loaded = true;
 731 }
 732
 733 #ifdef I40E_FCOE
 734 /**
 735  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 736  * @vsi: the VSI that is capable of doing FCoE
 737  **/
 738 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 739 {
 740         struct i40e_pf *pf = vsi->back;
 741         struct i40e_hw *hw = &pf->hw;
 742         struct i40e_fcoe_stats *ofs;
 743         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 744         int idx;
 745
 746         if (vsi->type != I40E_VSI_FCOE)
 747                 return;
 748
 749         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 750         fs = &vsi->fcoe_stats;
 751         ofs = &vsi->fcoe_stats_offsets;
 752
 753         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 754                            vsi->fcoe_stat_offsets_loaded,
 755                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 756         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 757                            vsi->fcoe_stat_offsets_loaded,
 758                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 759         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 760                            vsi->fcoe_stat_offsets_loaded,
 761                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 762         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 763                            vsi->fcoe_stat_offsets_loaded,
 764                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 765         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 768         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 771         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 774         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 777
 778         vsi->fcoe_stat_offsets_loaded = true;
 779 }
 780
 781 #endif
 782 /**
 783  * i40e_update_vsi_stats - Update the vsi statistics counters.
 784  * @vsi: the VSI to be updated
 785  *
 786  * There are a few instances where we store the same stat in a
 787  * couple of different structs.  This is partly because we have
 788  * the netdev stats that need to be filled out, which is slightly
 789  * different from the "eth_stats" defined by the chip and used in
 790  * VF communications.  We sort it out here.
 791  **/
 792 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 793 {
 794         struct i40e_pf *pf = vsi->back;
 795         struct rtnl_link_stats64 *ons;
 796         struct rtnl_link_stats64 *ns;   /* netdev stats */
 797         struct i40e_eth_stats *oes;
 798         struct i40e_eth_stats *es;     /* device's eth stats */
 799         u32 tx_restart, tx_busy;
 800         u64 tx_lost_interrupt;
 801         struct i40e_ring *p;
 802         u32 rx_page, rx_buf;
 803         u64 bytes, packets;
 804         unsigned int start;
 805         u64 tx_linearize;
 806         u64 tx_force_wb;
 807         u64 rx_p, rx_b;
 808         u64 tx_p, tx_b;
 809         u16 q;
 810
 811         if (test_bit(__I40E_DOWN, &vsi->state) ||
 812             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 813                 return;
 814
 815         ns = i40e_get_vsi_stats_struct(vsi);
 816         ons = &vsi->net_stats_offsets;
 817         es = &vsi->eth_stats;
 818         oes = &vsi->eth_stats_offsets;
 819
 820         /* Gather up the netdev and vsi stats that the driver collects
 821          * on the fly during packet processing
 822          */
 823         rx_b = rx_p = 0;
 824         tx_b = tx_p = 0;
 825         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 826         tx_lost_interrupt = 0;
 827         rx_page = 0;
 828         rx_buf = 0;
 829         rcu_read_lock();
 830         for (q = 0; q < vsi->num_queue_pairs; q++) {
 831                 /* locate Tx ring */
 832                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 833
 834                 do {
 835                         start = u64_stats_fetch_begin_irq(&p->syncp);
 836                         packets = p->stats.packets;
 837                         bytes = p->stats.bytes;
 838                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 839                 tx_b += bytes;
 840                 tx_p += packets;
 841                 tx_restart += p->tx_stats.restart_queue;
 842                 tx_busy += p->tx_stats.tx_busy;
 843                 tx_linearize += p->tx_stats.tx_linearize;
 844                 tx_force_wb += p->tx_stats.tx_force_wb;
 845                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 846
 847                 /* Rx queue is part of the same block as Tx queue */
 848                 p = &p[1];
 849                 do {
 850                         start = u64_stats_fetch_begin_irq(&p->syncp);
 851                         packets = p->stats.packets;
 852                         bytes = p->stats.bytes;
 853                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 854                 rx_b += bytes;
 855                 rx_p += packets;
 856                 rx_buf += p->rx_stats.alloc_buff_failed;
 857                 rx_page += p->rx_stats.alloc_page_failed;
 858         }
 859         rcu_read_unlock();
 860         vsi->tx_restart = tx_restart;
 861         vsi->tx_busy = tx_busy;
 862         vsi->tx_linearize = tx_linearize;
 863         vsi->tx_force_wb = tx_force_wb;
 864         vsi->tx_lost_interrupt = tx_lost_interrupt;
 865         vsi->rx_page_failed = rx_page;
 866         vsi->rx_buf_failed = rx_buf;
 867
 868         ns->rx_packets = rx_p;
 869         ns->rx_bytes = rx_b;
 870         ns->tx_packets = tx_p;
 871         ns->tx_bytes = tx_b;
 872
 873         /* update netdev stats from eth stats */
 874         i40e_update_eth_stats(vsi);
 875         ons->tx_errors = oes->tx_errors;
 876         ns->tx_errors = es->tx_errors;
 877         ons->multicast = oes->rx_multicast;
 878         ns->multicast = es->rx_multicast;
 879         ons->rx_dropped = oes->rx_discards;
 880         ns->rx_dropped = es->rx_discards;
 881         ons->tx_dropped = oes->tx_discards;
 882         ns->tx_dropped = es->tx_discards;
 883
 884         /* pull in a couple PF stats if this is the main vsi */
 885         if (vsi == pf->vsi[pf->lan_vsi]) {
 886                 ns->rx_crc_errors = pf->stats.crc_errors;
 887                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 888                 ns->rx_length_errors = pf->stats.rx_length_errors;
 889         }
 890 }
 891
 892 /**
 893  * i40e_update_pf_stats - Update the PF statistics counters.
 894  * @pf: the PF to be updated
 895  **/
 896 static void i40e_update_pf_stats(struct i40e_pf *pf)
 897 {
 898         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 899         struct i40e_hw_port_stats *nsd = &pf->stats;
 900         struct i40e_hw *hw = &pf->hw;
 901         u32 val;
 902         int i;
 903
 904         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 905                            I40E_GLPRT_GORCL(hw->port),
 906                            pf->stat_offsets_loaded,
 907                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 908         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 909                            I40E_GLPRT_GOTCL(hw->port),
 910                            pf->stat_offsets_loaded,
 911                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 912         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 913                            pf->stat_offsets_loaded,
 914                            &osd->eth.rx_discards,
 915                            &nsd->eth.rx_discards);
 916         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 917                            I40E_GLPRT_UPRCL(hw->port),
 918                            pf->stat_offsets_loaded,
 919                            &osd->eth.rx_unicast,
 920                            &nsd->eth.rx_unicast);
 921         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 922                            I40E_GLPRT_MPRCL(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.rx_multicast,
 925                            &nsd->eth.rx_multicast);
 926         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 927                            I40E_GLPRT_BPRCL(hw->port),
 928                            pf->stat_offsets_loaded,
 929                            &osd->eth.rx_broadcast,
 930                            &nsd->eth.rx_broadcast);
 931         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 932                            I40E_GLPRT_UPTCL(hw->port),
 933                            pf->stat_offsets_loaded,
 934                            &osd->eth.tx_unicast,
 935                            &nsd->eth.tx_unicast);
 936         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 937                            I40E_GLPRT_MPTCL(hw->port),
 938                            pf->stat_offsets_loaded,
 939                            &osd->eth.tx_multicast,
 940                            &nsd->eth.tx_multicast);
 941         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 942                            I40E_GLPRT_BPTCL(hw->port),
 943                            pf->stat_offsets_loaded,
 944                            &osd->eth.tx_broadcast,
 945                            &nsd->eth.tx_broadcast);
 946
 947         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 948                            pf->stat_offsets_loaded,
 949                            &osd->tx_dropped_link_down,
 950                            &nsd->tx_dropped_link_down);
 951
 952         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 953                            pf->stat_offsets_loaded,
 954                            &osd->crc_errors, &nsd->crc_errors);
 955
 956         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 957                            pf->stat_offsets_loaded,
 958                            &osd->illegal_bytes, &nsd->illegal_bytes);
 959
 960         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->mac_local_faults,
 963                            &nsd->mac_local_faults);
 964         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->mac_remote_faults,
 967                            &nsd->mac_remote_faults);
 968
 969         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 970                            pf->stat_offsets_loaded,
 971                            &osd->rx_length_errors,
 972                            &nsd->rx_length_errors);
 973
 974         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->link_xon_rx, &nsd->link_xon_rx);
 977         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->link_xon_tx, &nsd->link_xon_tx);
 980         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 983         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 986
 987         for (i = 0; i < 8; i++) {
 988                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 989                                    pf->stat_offsets_loaded,
 990                                    &osd->priority_xoff_rx[i],
 991                                    &nsd->priority_xoff_rx[i]);
 992                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 993                                    pf->stat_offsets_loaded,
 994                                    &osd->priority_xon_rx[i],
 995                                    &nsd->priority_xon_rx[i]);
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xon_tx[i],
 999                                    &nsd->priority_xon_tx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xoff_tx[i],
1003                                    &nsd->priority_xoff_tx[i]);
1004                 i40e_stat_update32(hw,
1005                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xon_2_xoff[i],
1008                                    &nsd->priority_xon_2_xoff[i]);
1009         }
1010
1011         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1012                            I40E_GLPRT_PRC64L(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->rx_size_64, &nsd->rx_size_64);
1015         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1016                            I40E_GLPRT_PRC127L(hw->port),
1017                            pf->stat_offsets_loaded,
1018                            &osd->rx_size_127, &nsd->rx_size_127);
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1020                            I40E_GLPRT_PRC255L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_255, &nsd->rx_size_255);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1024                            I40E_GLPRT_PRC511L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_511, &nsd->rx_size_511);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1028                            I40E_GLPRT_PRC1023L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_1023, &nsd->rx_size_1023);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1032                            I40E_GLPRT_PRC1522L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_1522, &nsd->rx_size_1522);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1036                            I40E_GLPRT_PRC9522L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_big, &nsd->rx_size_big);
1039
1040         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1041                            I40E_GLPRT_PTC64L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->tx_size_64, &nsd->tx_size_64);
1044         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1045                            I40E_GLPRT_PTC127L(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->tx_size_127, &nsd->tx_size_127);
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1049                            I40E_GLPRT_PTC255L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_255, &nsd->tx_size_255);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1053                            I40E_GLPRT_PTC511L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_511, &nsd->tx_size_511);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1057                            I40E_GLPRT_PTC1023L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_1023, &nsd->tx_size_1023);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1061                            I40E_GLPRT_PTC1522L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_1522, &nsd->tx_size_1522);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1065                            I40E_GLPRT_PTC9522L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_big, &nsd->tx_size_big);
1068
1069         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->rx_undersize, &nsd->rx_undersize);
1072         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->rx_fragments, &nsd->rx_fragments);
1075         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_oversize, &nsd->rx_oversize);
1078         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_jabber, &nsd->rx_jabber);
1081
1082         /* FDIR stats */
1083         i40e_stat_update32(hw,
1084                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1085                            pf->stat_offsets_loaded,
1086                            &osd->fd_atr_match, &nsd->fd_atr_match);
1087         i40e_stat_update32(hw,
1088                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_sb_match, &nsd->fd_sb_match);
1091         i40e_stat_update32(hw,
1092                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1093                       pf->stat_offsets_loaded,
1094                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1095
1096         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1097         nsd->tx_lpi_status =
1098                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1099                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1100         nsd->rx_lpi_status =
1101                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1102                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1103         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1104                            pf->stat_offsets_loaded,
1105                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1106         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1107                            pf->stat_offsets_loaded,
1108                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1109
1110         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1111             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1112                 nsd->fd_sb_status = true;
1113         else
1114                 nsd->fd_sb_status = false;
1115
1116         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1117             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1118                 nsd->fd_atr_status = true;
1119         else
1120                 nsd->fd_atr_status = false;
1121
1122         pf->stat_offsets_loaded = true;
1123 }
1124
1125 /**
1126  * i40e_update_stats - Update the various statistics counters.
1127  * @vsi: the VSI to be updated
1128  *
1129  * Update the various stats for this VSI and its related entities.
1130  **/
1131 void i40e_update_stats(struct i40e_vsi *vsi)
1132 {
1133         struct i40e_pf *pf = vsi->back;
1134
1135         if (vsi == pf->vsi[pf->lan_vsi])
1136                 i40e_update_pf_stats(pf);
1137
1138         i40e_update_vsi_stats(vsi);
1139 #ifdef I40E_FCOE
1140         i40e_update_fcoe_stats(vsi);
1141 #endif
1142 }
1143
1144 /**
1145  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1146  * @vsi: the VSI to be searched
1147  * @macaddr: the MAC address
1148  * @vlan: the vlan
1149  *
1150  * Returns ptr to the filter object or NULL
1151  **/
1152 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1153                                                 const u8 *macaddr, s16 vlan)
1154 {
1155         struct i40e_mac_filter *f;
1156         u64 key;
1157
1158         if (!vsi || !macaddr)
1159                 return NULL;
1160
1161         key = i40e_addr_to_hkey(macaddr);
1162         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1163                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1164                     (vlan == f->vlan))
1165                         return f;
1166         }
1167         return NULL;
1168 }
1169
1170 /**
1171  * i40e_find_mac - Find a mac addr in the macvlan filters list
1172  * @vsi: the VSI to be searched
1173  * @macaddr: the MAC address we are searching for
1174  *
1175  * Returns the first filter with the provided MAC address or NULL if
1176  * MAC address was not found
1177  **/
1178 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1179 {
1180         struct i40e_mac_filter *f;
1181         u64 key;
1182
1183         if (!vsi || !macaddr)
1184                 return NULL;
1185
1186         key = i40e_addr_to_hkey(macaddr);
1187         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1188                 if ((ether_addr_equal(macaddr, f->macaddr)))
1189                         return f;
1190         }
1191         return NULL;
1192 }
1193
1194 /**
1195  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1196  * @vsi: the VSI to be searched
1197  *
1198  * Returns true if VSI is in vlan mode or false otherwise
1199  **/
1200 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1201 {
1202         /* If we have a PVID, always operate in VLAN mode */
1203         if (vsi->info.pvid)
1204                 return true;
1205
1206         /* We need to operate in VLAN mode whenever we have any filters with
1207          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1208          * time, incurring search cost repeatedly. However, we can notice two
1209          * things:
1210          *
1211          * 1) the only place where we can gain a VLAN filter is in
1212          *    i40e_add_filter.
1213          *
1214          * 2) the only place where filters are actually removed is in
1215          *    i40e_sync_filters_subtask.
1216          *
1217          * Thus, we can simply use a boolean value, has_vlan_filters which we
1218          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1219          * we have to perform the full search after deleting filters in
1220          * i40e_sync_filters_subtask, but we already have to search
1221          * filters here and can perform the check at the same time. This
1222          * results in avoiding embedding a loop for VLAN mode inside another
1223          * loop over all the filters, and should maintain correctness as noted
1224          * above.
1225          */
1226         return vsi->has_vlan_filter;
1227 }
1228
1229 /**
1230  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1231  * @vsi: the VSI to configure
1232  * @tmp_add_list: list of filters ready to be added
1233  * @tmp_del_list: list of filters ready to be deleted
1234  * @vlan_filters: the number of active VLAN filters
1235  *
1236  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1237  * behave as expected. If we have any active VLAN filters remaining or about
1238  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1239  * so that they only match against untagged traffic. If we no longer have any
1240  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1241  * so that they match against both tagged and untagged traffic. In this way,
1242  * we ensure that we correctly receive the desired traffic. This ensures that
1243  * when we have an active VLAN we will receive only untagged traffic and
1244  * traffic matching active VLANs. If we have no active VLANs then we will
1245  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1246  *
1247  * Finally, in a similar fashion, this function also corrects filters when
1248  * there is an active PVID assigned to this VSI.
1249  *
1250  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1251  *
1252  * This function is only expected to be called from within
1253  * i40e_sync_vsi_filters.
1254  *
1255  * NOTE: This function expects to be called while under the
1256  * mac_filter_hash_lock
1257  */
1258 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1259                                          struct hlist_head *tmp_add_list,
1260                                          struct hlist_head *tmp_del_list,
1261                                          int vlan_filters)
1262 {
1263         struct i40e_mac_filter *f, *add_head;
1264         struct hlist_node *h;
1265         int bkt, new_vlan;
1266
1267         /* To determine if a particular filter needs to be replaced we
1268          * have the three following conditions:
1269          *
1270          * a) if we have a PVID assigned, then all filters which are
1271          *    not marked as VLAN=PVID must be replaced with filters that
1272          *    are.
1273          * b) otherwise, if we have any active VLANS, all filters
1274          *    which are marked as VLAN=-1 must be replaced with
1275          *    filters marked as VLAN=0
1276          * c) finally, if we do not have any active VLANS, all filters
1277          *    which are marked as VLAN=0 must be replaced with filters
1278          *    marked as VLAN=-1
1279          */
1280
1281         /* Update the filters about to be added in place */
1282         hlist_for_each_entry(f, tmp_add_list, hlist) {
1283                 if (vsi->info.pvid && f->vlan != vsi->info.pvid)
1284                         f->vlan = vsi->info.pvid;
1285                 else if (vlan_filters && f->vlan == I40E_VLAN_ANY)
1286                         f->vlan = 0;
1287                 else if (!vlan_filters && f->vlan == 0)
1288                         f->vlan = I40E_VLAN_ANY;
1289         }
1290
1291         /* Update the remaining active filters */
1292         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1293                 /* Combine the checks for whether a filter needs to be changed
1294                  * and then determine the new VLAN inside the if block, in
1295                  * order to avoid duplicating code for adding the new filter
1296                  * then deleting the old filter.
1297                  */
1298                 if ((vsi->info.pvid && f->vlan != vsi->info.pvid) ||
1299                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1300                     (!vlan_filters && f->vlan == 0)) {
1301                         /* Determine the new vlan we will be adding */
1302                         if (vsi->info.pvid)
1303                                 new_vlan = vsi->info.pvid;
1304                         else if (vlan_filters)
1305                                 new_vlan = 0;
1306                         else
1307                                 new_vlan = I40E_VLAN_ANY;
1308
1309                         /* Create the new filter */
1310                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1311                         if (!add_head)
1312                                 return -ENOMEM;
1313
1314                         /* Put the replacement filter into the add list */
1315                         hash_del(&add_head->hlist);
1316                         hlist_add_head(&add_head->hlist, tmp_add_list);
1317
1318                         /* Put the original filter into the delete list */
1319                         f->state = I40E_FILTER_REMOVE;
1320                         hash_del(&f->hlist);
1321                         hlist_add_head(&f->hlist, tmp_del_list);
1322                 }
1323         }
1324
1325         vsi->has_vlan_filter = !!vlan_filters;
1326
1327         return 0;
1328 }
1329
1330 /**
1331  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1332  * @vsi: the PF Main VSI - inappropriate for any other VSI
1333  * @macaddr: the MAC address
1334  *
1335  * Remove whatever filter the firmware set up so the driver can manage
1336  * its own filtering intelligently.
1337  **/
1338 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1339 {
1340         struct i40e_aqc_remove_macvlan_element_data element;
1341         struct i40e_pf *pf = vsi->back;
1342
1343         /* Only appropriate for the PF main VSI */
1344         if (vsi->type != I40E_VSI_MAIN)
1345                 return;
1346
1347         memset(&element, 0, sizeof(element));
1348         ether_addr_copy(element.mac_addr, macaddr);
1349         element.vlan_tag = 0;
1350         /* Ignore error returns, some firmware does it this way... */
1351         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1352         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1353
1354         memset(&element, 0, sizeof(element));
1355         ether_addr_copy(element.mac_addr, macaddr);
1356         element.vlan_tag = 0;
1357         /* ...and some firmware does it this way. */
1358         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1359                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1360         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1361 }
1362
1363 /**
1364  * i40e_add_filter - Add a mac/vlan filter to the VSI
1365  * @vsi: the VSI to be searched
1366  * @macaddr: the MAC address
1367  * @vlan: the vlan
1368  *
1369  * Returns ptr to the filter object or NULL when no memory available.
1370  *
1371  * NOTE: This function is expected to be called with mac_filter_hash_lock
1372  * being held.
1373  **/
1374 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1375                                         const u8 *macaddr, s16 vlan)
1376 {
1377         struct i40e_mac_filter *f;
1378         u64 key;
1379
1380         if (!vsi || !macaddr)
1381                 return NULL;
1382
1383         f = i40e_find_filter(vsi, macaddr, vlan);
1384         if (!f) {
1385                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1386                 if (!f)
1387                         return NULL;
1388
1389                 /* Update the boolean indicating if we need to function in
1390                  * VLAN mode.
1391                  */
1392                 if (vlan >= 0)
1393                         vsi->has_vlan_filter = true;
1394
1395                 ether_addr_copy(f->macaddr, macaddr);
1396                 f->vlan = vlan;
1397                 /* If we're in overflow promisc mode, set the state directly
1398                  * to failed, so we don't bother to try sending the filter
1399                  * to the hardware.
1400                  */
1401                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1402                         f->state = I40E_FILTER_FAILED;
1403                 else
1404                         f->state = I40E_FILTER_NEW;
1405                 INIT_HLIST_NODE(&f->hlist);
1406
1407                 key = i40e_addr_to_hkey(macaddr);
1408                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1409
1410                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1411                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1412         }
1413
1414         /* If we're asked to add a filter that has been marked for removal, it
1415          * is safe to simply restore it to active state. __i40e_del_filter
1416          * will have simply deleted any filters which were previously marked
1417          * NEW or FAILED, so if it is currently marked REMOVE it must have
1418          * previously been ACTIVE. Since we haven't yet run the sync filters
1419          * task, just restore this filter to the ACTIVE state so that the
1420          * sync task leaves it in place
1421          */
1422         if (f->state == I40E_FILTER_REMOVE)
1423                 f->state = I40E_FILTER_ACTIVE;
1424
1425         return f;
1426 }
1427
1428 /**
1429  * __i40e_del_filter - Remove a specific filter from the VSI
1430  * @vsi: VSI to remove from
1431  * @f: the filter to remove from the list
1432  *
1433  * This function should be called instead of i40e_del_filter only if you know
1434  * the exact filter you will remove already, such as via i40e_find_filter or
1435  * i40e_find_mac.
1436  *
1437  * NOTE: This function is expected to be called with mac_filter_hash_lock
1438  * being held.
1439  * ANOTHER NOTE: This function MUST be called from within the context of
1440  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1441  * instead of list_for_each_entry().
1442  **/
1443 static void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1444 {
1445         if (!f)
1446                 return;
1447
1448         if ((f->state == I40E_FILTER_FAILED) ||
1449             (f->state == I40E_FILTER_NEW)) {
1450                 /* this one never got added by the FW. Just remove it,
1451                  * no need to sync anything.
1452                  */
1453                 hash_del(&f->hlist);
1454                 kfree(f);
1455         } else {
1456                 f->state = I40E_FILTER_REMOVE;
1457                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1458                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1459         }
1460 }
1461
1462 /**
1463  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1464  * @vsi: the VSI to be searched
1465  * @macaddr: the MAC address
1466  * @vlan: the VLAN
1467  *
1468  * NOTE: This function is expected to be called with mac_filter_hash_lock
1469  * being held.
1470  * ANOTHER NOTE: This function MUST be called from within the context of
1471  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1472  * instead of list_for_each_entry().
1473  **/
1474 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1475 {
1476         struct i40e_mac_filter *f;
1477
1478         if (!vsi || !macaddr)
1479                 return;
1480
1481         f = i40e_find_filter(vsi, macaddr, vlan);
1482         __i40e_del_filter(vsi, f);
1483 }
1484
1485 /**
1486  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1487  * @vsi: the VSI to be searched
1488  * @macaddr: the mac address to be filtered
1489  *
1490  * Goes through all the macvlan filters and adds a macvlan filter for each
1491  * unique vlan that already exists. If a PVID has been assigned, instead only
1492  * add the macaddr to that VLAN.
1493  *
1494  * Returns last filter added on success, else NULL
1495  **/
1496 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi,
1497                                              const u8 *macaddr)
1498 {
1499         struct i40e_mac_filter *f, *add = NULL;
1500         struct hlist_node *h;
1501         int bkt;
1502
1503         if (vsi->info.pvid)
1504                 return i40e_add_filter(vsi, macaddr,
1505                                        le16_to_cpu(vsi->info.pvid));
1506
1507         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1508                 if (f->state == I40E_FILTER_REMOVE)
1509                         continue;
1510                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1511                 if (!add)
1512                         return NULL;
1513         }
1514
1515         return add;
1516 }
1517
1518 /**
1519  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1520  * @vsi: the VSI to be searched
1521  * @macaddr: the mac address to be removed
1522  *
1523  * Removes a given MAC address from a VSI, regardless of VLAN
1524  *
1525  * Returns 0 for success, or error
1526  **/
1527 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, const u8 *macaddr)
1528 {
1529         struct i40e_mac_filter *f;
1530         struct hlist_node *h;
1531         bool found = false;
1532         int bkt;
1533
1534         WARN(!spin_is_locked(&vsi->mac_filter_hash_lock),
1535              "Missing mac_filter_hash_lock\n");
1536         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1537                 if (ether_addr_equal(macaddr, f->macaddr)) {
1538                         __i40e_del_filter(vsi, f);
1539                         found = true;
1540                 }
1541         }
1542
1543         if (found)
1544                 return 0;
1545         else
1546                 return -ENOENT;
1547 }
1548
1549 /**
1550  * i40e_set_mac - NDO callback to set mac address
1551  * @netdev: network interface device structure
1552  * @p: pointer to an address structure
1553  *
1554  * Returns 0 on success, negative on failure
1555  **/
1556 #ifdef I40E_FCOE
1557 int i40e_set_mac(struct net_device *netdev, void *p)
1558 #else
1559 static int i40e_set_mac(struct net_device *netdev, void *p)
1560 #endif
1561 {
1562         struct i40e_netdev_priv *np = netdev_priv(netdev);
1563         struct i40e_vsi *vsi = np->vsi;
1564         struct i40e_pf *pf = vsi->back;
1565         struct i40e_hw *hw = &pf->hw;
1566         struct sockaddr *addr = p;
1567
1568         if (!is_valid_ether_addr(addr->sa_data))
1569                 return -EADDRNOTAVAIL;
1570
1571         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1572                 netdev_info(netdev, "already using mac address %pM\n",
1573                             addr->sa_data);
1574                 return 0;
1575         }
1576
1577         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1578             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1579                 return -EADDRNOTAVAIL;
1580
1581         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1582                 netdev_info(netdev, "returning to hw mac address %pM\n",
1583                             hw->mac.addr);
1584         else
1585                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1586
1587         spin_lock_bh(&vsi->mac_filter_hash_lock);
1588         i40e_del_mac_all_vlan(vsi, netdev->dev_addr);
1589         i40e_put_mac_in_vlan(vsi, addr->sa_data);
1590         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1591         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1592         if (vsi->type == I40E_VSI_MAIN) {
1593                 i40e_status ret;
1594
1595                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1596                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1597                                                 addr->sa_data, NULL);
1598                 if (ret)
1599                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1600                                     i40e_stat_str(hw, ret),
1601                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1602         }
1603
1604         /* schedule our worker thread which will take care of
1605          * applying the new filter changes
1606          */
1607         i40e_service_event_schedule(vsi->back);
1608         return 0;
1609 }
1610
1611 /**
1612  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1613  * @vsi: the VSI being setup
1614  * @ctxt: VSI context structure
1615  * @enabled_tc: Enabled TCs bitmap
1616  * @is_add: True if called before Add VSI
1617  *
1618  * Setup VSI queue mapping for enabled traffic classes.
1619  **/
1620 #ifdef I40E_FCOE
1621 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1622                               struct i40e_vsi_context *ctxt,
1623                               u8 enabled_tc,
1624                               bool is_add)
1625 #else
1626 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1627                                      struct i40e_vsi_context *ctxt,
1628                                      u8 enabled_tc,
1629                                      bool is_add)
1630 #endif
1631 {
1632         struct i40e_pf *pf = vsi->back;
1633         u16 sections = 0;
1634         u8 netdev_tc = 0;
1635         u16 numtc = 0;
1636         u16 qcount;
1637         u8 offset;
1638         u16 qmap;
1639         int i;
1640         u16 num_tc_qps = 0;
1641
1642         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1643         offset = 0;
1644
1645         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1646                 /* Find numtc from enabled TC bitmap */
1647                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1648                         if (enabled_tc & BIT(i)) /* TC is enabled */
1649                                 numtc++;
1650                 }
1651                 if (!numtc) {
1652                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1653                         numtc = 1;
1654                 }
1655         } else {
1656                 /* At least TC0 is enabled in case of non-DCB case */
1657                 numtc = 1;
1658         }
1659
1660         vsi->tc_config.numtc = numtc;
1661         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1662         /* Number of queues per enabled TC */
1663         qcount = vsi->alloc_queue_pairs;
1664
1665         num_tc_qps = qcount / numtc;
1666         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1667
1668         /* Setup queue offset/count for all TCs for given VSI */
1669         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1670                 /* See if the given TC is enabled for the given VSI */
1671                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1672                         /* TC is enabled */
1673                         int pow, num_qps;
1674
1675                         switch (vsi->type) {
1676                         case I40E_VSI_MAIN:
1677                                 qcount = min_t(int, pf->alloc_rss_size,
1678                                                num_tc_qps);
1679                                 break;
1680 #ifdef I40E_FCOE
1681                         case I40E_VSI_FCOE:
1682                                 qcount = num_tc_qps;
1683                                 break;
1684 #endif
1685                         case I40E_VSI_FDIR:
1686                         case I40E_VSI_SRIOV:
1687                         case I40E_VSI_VMDQ2:
1688                         default:
1689                                 qcount = num_tc_qps;
1690                                 WARN_ON(i != 0);
1691                                 break;
1692                         }
1693                         vsi->tc_config.tc_info[i].qoffset = offset;
1694                         vsi->tc_config.tc_info[i].qcount = qcount;
1695
1696                         /* find the next higher power-of-2 of num queue pairs */
1697                         num_qps = qcount;
1698                         pow = 0;
1699                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1700                                 pow++;
1701                                 num_qps >>= 1;
1702                         }
1703
1704                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1705                         qmap =
1706                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1707                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1708
1709                         offset += qcount;
1710                 } else {
1711                         /* TC is not enabled so set the offset to
1712                          * default queue and allocate one queue
1713                          * for the given TC.
1714                          */
1715                         vsi->tc_config.tc_info[i].qoffset = 0;
1716                         vsi->tc_config.tc_info[i].qcount = 1;
1717                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1718
1719                         qmap = 0;
1720                 }
1721                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1722         }
1723
1724         /* Set actual Tx/Rx queue pairs */
1725         vsi->num_queue_pairs = offset;
1726         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1727                 if (vsi->req_queue_pairs > 0)
1728                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1729                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1730                         vsi->num_queue_pairs = pf->num_lan_msix;
1731         }
1732
1733         /* Scheduler section valid can only be set for ADD VSI */
1734         if (is_add) {
1735                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1736
1737                 ctxt->info.up_enable_bits = enabled_tc;
1738         }
1739         if (vsi->type == I40E_VSI_SRIOV) {
1740                 ctxt->info.mapping_flags |=
1741                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1742                 for (i = 0; i < vsi->num_queue_pairs; i++)
1743                         ctxt->info.queue_mapping[i] =
1744                                                cpu_to_le16(vsi->base_queue + i);
1745         } else {
1746                 ctxt->info.mapping_flags |=
1747                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1748                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1749         }
1750         ctxt->info.valid_sections |= cpu_to_le16(sections);
1751 }
1752
1753 /**
1754  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
1755  * @netdev: the netdevice
1756  * @addr: address to add
1757  *
1758  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
1759  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1760  */
1761 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
1762 {
1763         struct i40e_netdev_priv *np = netdev_priv(netdev);
1764         struct i40e_vsi *vsi = np->vsi;
1765         struct i40e_mac_filter *f;
1766
1767         if (i40e_is_vsi_in_vlan(vsi))
1768                 f = i40e_put_mac_in_vlan(vsi, addr);
1769         else
1770                 f = i40e_add_filter(vsi, addr, I40E_VLAN_ANY);
1771
1772         if (f)
1773                 return 0;
1774         else
1775                 return -ENOMEM;
1776 }
1777
1778 /**
1779  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
1780  * @netdev: the netdevice
1781  * @addr: address to add
1782  *
1783  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
1784  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1785  */
1786 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
1787 {
1788         struct i40e_netdev_priv *np = netdev_priv(netdev);
1789         struct i40e_vsi *vsi = np->vsi;
1790
1791         if (i40e_is_vsi_in_vlan(vsi))
1792                 i40e_del_mac_all_vlan(vsi, addr);
1793         else
1794                 i40e_del_filter(vsi, addr, I40E_VLAN_ANY);
1795
1796         return 0;
1797 }
1798
1799 /**
1800  * i40e_set_rx_mode - NDO callback to set the netdev filters
1801  * @netdev: network interface device structure
1802  **/
1803 #ifdef I40E_FCOE
1804 void i40e_set_rx_mode(struct net_device *netdev)
1805 #else
1806 static void i40e_set_rx_mode(struct net_device *netdev)
1807 #endif
1808 {
1809         struct i40e_netdev_priv *np = netdev_priv(netdev);
1810         struct i40e_vsi *vsi = np->vsi;
1811
1812         spin_lock_bh(&vsi->mac_filter_hash_lock);
1813
1814         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1815         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1816
1817         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1818
1819         /* check for other flag changes */
1820         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1821                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1822                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1823         }
1824
1825         /* schedule our worker thread which will take care of
1826          * applying the new filter changes
1827          */
1828         i40e_service_event_schedule(vsi->back);
1829 }
1830
1831 /**
1832  * i40e_undo_filter_entries - Undo the changes made to MAC filter entries
1833  * @vsi: Pointer to VSI struct
1834  * @from: Pointer to list which contains MAC filter entries - changes to
1835  *        those entries needs to be undone.
1836  *
1837  * MAC filter entries from list were slated to be sent to firmware, either for
1838  * addition or deletion.
1839  **/
1840 static void i40e_undo_filter_entries(struct i40e_vsi *vsi,
1841                                      struct hlist_head *from)
1842 {
1843         struct i40e_mac_filter *f;
1844         struct hlist_node *h;
1845
1846         hlist_for_each_entry_safe(f, h, from, hlist) {
1847                 u64 key = i40e_addr_to_hkey(f->macaddr);
1848
1849                 /* Move the element back into MAC filter list*/
1850                 hlist_del(&f->hlist);
1851                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1852         }
1853 }
1854
1855 /**
1856  * i40e_update_filter_state - Update filter state based on return data
1857  * from firmware
1858  * @count: Number of filters added
1859  * @add_list: return data from fw
1860  * @head: pointer to first filter in current batch
1861  *
1862  * MAC filter entries from list were slated to be added to device. Returns
1863  * number of successful filters. Note that 0 does NOT mean success!
1864  **/
1865 static int
1866 i40e_update_filter_state(int count,
1867                          struct i40e_aqc_add_macvlan_element_data *add_list,
1868                          struct i40e_mac_filter *add_head)
1869 {
1870         int retval = 0;
1871         int i;
1872
1873         for (i = 0; i < count; i++) {
1874                 /* Always check status of each filter. We don't need to check
1875                  * the firmware return status because we pre-set the filter
1876                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
1877                  * request to the adminq. Thus, if it no longer matches then
1878                  * we know the filter is active.
1879                  */
1880                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
1881                         add_head->state = I40E_FILTER_FAILED;
1882                 } else {
1883                         add_head->state = I40E_FILTER_ACTIVE;
1884                         retval++;
1885                 }
1886
1887                 add_head = hlist_entry(add_head->hlist.next,
1888                                        typeof(struct i40e_mac_filter),
1889                                        hlist);
1890         }
1891
1892         return retval;
1893 }
1894
1895 /**
1896  * i40e_aqc_del_filters - Request firmware to delete a set of filters
1897  * @vsi: ptr to the VSI
1898  * @vsi_name: name to display in messages
1899  * @list: the list of filters to send to firmware
1900  * @num_del: the number of filters to delete
1901  * @retval: Set to -EIO on failure to delete
1902  *
1903  * Send a request to firmware via AdminQ to delete a set of filters. Uses
1904  * *retval instead of a return value so that success does not force ret_val to
1905  * be set to 0. This ensures that a sequence of calls to this function
1906  * preserve the previous value of *retval on successful delete.
1907  */
1908 static
1909 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
1910                           struct i40e_aqc_remove_macvlan_element_data *list,
1911                           int num_del, int *retval)
1912 {
1913         struct i40e_hw *hw = &vsi->back->hw;
1914         i40e_status aq_ret;
1915         int aq_err;
1916
1917         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
1918         aq_err = hw->aq.asq_last_status;
1919
1920         /* Explicitly ignore and do not report when firmware returns ENOENT */
1921         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1922                 *retval = -EIO;
1923                 dev_info(&vsi->back->pdev->dev,
1924                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1925                          vsi_name, i40e_stat_str(hw, aq_ret),
1926                          i40e_aq_str(hw, aq_err));
1927         }
1928 }
1929
1930 /**
1931  * i40e_aqc_add_filters - Request firmware to add a set of filters
1932  * @vsi: ptr to the VSI
1933  * @vsi_name: name to display in messages
1934  * @list: the list of filters to send to firmware
1935  * @add_head: Position in the add hlist
1936  * @num_add: the number of filters to add
1937  * @promisc_change: set to true on exit if promiscuous mode was forced on
1938  *
1939  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
1940  * promisc_changed to true if the firmware has run out of space for more
1941  * filters.
1942  */
1943 static
1944 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
1945                           struct i40e_aqc_add_macvlan_element_data *list,
1946                           struct i40e_mac_filter *add_head,
1947                           int num_add, bool *promisc_changed)
1948 {
1949         struct i40e_hw *hw = &vsi->back->hw;
1950         int aq_err, fcnt;
1951
1952         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
1953         aq_err = hw->aq.asq_last_status;
1954         fcnt = i40e_update_filter_state(num_add, list, add_head);
1955
1956         if (fcnt != num_add) {
1957                 *promisc_changed = true;
1958                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
1959                 dev_warn(&vsi->back->pdev->dev,
1960                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
1961                          i40e_aq_str(hw, aq_err),
1962                          vsi_name);
1963         }
1964 }
1965
1966 /**
1967  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
1968  * @vsi: pointer to the VSI
1969  * @f: filter data
1970  *
1971  * This function sets or clears the promiscuous broadcast flags for VLAN
1972  * filters in order to properly receive broadcast frames. Assumes that only
1973  * broadcast filters are passed.
1974  **/
1975 static
1976 void i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
1977                                struct i40e_mac_filter *f)
1978 {
1979         bool enable = f->state == I40E_FILTER_NEW;
1980         struct i40e_hw *hw = &vsi->back->hw;
1981         i40e_status aq_ret;
1982
1983         if (f->vlan == I40E_VLAN_ANY) {
1984                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
1985                                                    vsi->seid,
1986                                                    enable,
1987                                                    NULL);
1988         } else {
1989                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
1990                                                             vsi->seid,
1991                                                             enable,
1992                                                             f->vlan,
1993                                                             NULL);
1994         }
1995
1996         if (aq_ret) {
1997                 dev_warn(&vsi->back->pdev->dev,
1998                          "Error %s setting broadcast promiscuous mode on %s\n",
1999                          i40e_aq_str(hw, hw->aq.asq_last_status),
2000                          vsi_name);
2001                 f->state = I40E_FILTER_FAILED;
2002         } else if (enable) {
2003                 f->state = I40E_FILTER_ACTIVE;
2004         }
2005 }
2006
2007 /**
2008  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2009  * @vsi: ptr to the VSI
2010  *
2011  * Push any outstanding VSI filter changes through the AdminQ.
2012  *
2013  * Returns 0 or error value
2014  **/
2015 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2016 {
2017         struct hlist_head tmp_add_list, tmp_del_list;
2018         struct i40e_mac_filter *f, *add_head = NULL;
2019         struct i40e_hw *hw = &vsi->back->hw;
2020         unsigned int failed_filters = 0;
2021         unsigned int vlan_filters = 0;
2022         bool promisc_changed = false;
2023         char vsi_name[16] = "PF";
2024         int filter_list_len = 0;
2025         i40e_status aq_ret = 0;
2026         u32 changed_flags = 0;
2027         struct hlist_node *h;
2028         struct i40e_pf *pf;
2029         int num_add = 0;
2030         int num_del = 0;
2031         int retval = 0;
2032         u16 cmd_flags;
2033         int list_size;
2034         int bkt;
2035
2036         /* empty array typed pointers, kcalloc later */
2037         struct i40e_aqc_add_macvlan_element_data *add_list;
2038         struct i40e_aqc_remove_macvlan_element_data *del_list;
2039
2040         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
2041                 usleep_range(1000, 2000);
2042         pf = vsi->back;
2043
2044         if (vsi->netdev) {
2045                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2046                 vsi->current_netdev_flags = vsi->netdev->flags;
2047         }
2048
2049         INIT_HLIST_HEAD(&tmp_add_list);
2050         INIT_HLIST_HEAD(&tmp_del_list);
2051
2052         if (vsi->type == I40E_VSI_SRIOV)
2053                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2054         else if (vsi->type != I40E_VSI_MAIN)
2055                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2056
2057         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2058                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2059
2060                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2061                 /* Create a list of filters to delete. */
2062                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2063                         if (f->state == I40E_FILTER_REMOVE) {
2064                                 /* Move the element into temporary del_list */
2065                                 hash_del(&f->hlist);
2066                                 hlist_add_head(&f->hlist, &tmp_del_list);
2067
2068                                 /* Avoid counting removed filters */
2069                                 continue;
2070                         }
2071                         if (f->state == I40E_FILTER_NEW) {
2072                                 hash_del(&f->hlist);
2073                                 hlist_add_head(&f->hlist, &tmp_add_list);
2074                         }
2075
2076                         /* Count the number of active (current and new) VLAN
2077                          * filters we have now. Does not count filters which
2078                          * are marked for deletion.
2079                          */
2080                         if (f->vlan > 0)
2081                                 vlan_filters++;
2082                 }
2083
2084                 retval = i40e_correct_mac_vlan_filters(vsi,
2085                                                        &tmp_add_list,
2086                                                        &tmp_del_list,
2087                                                        vlan_filters);
2088                 if (retval)
2089                         goto err_no_memory_locked;
2090
2091                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2092         }
2093
2094         /* Now process 'del_list' outside the lock */
2095         if (!hlist_empty(&tmp_del_list)) {
2096                 filter_list_len = hw->aq.asq_buf_size /
2097                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2098                 list_size = filter_list_len *
2099                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2100                 del_list = kzalloc(list_size, GFP_ATOMIC);
2101                 if (!del_list)
2102                         goto err_no_memory;
2103
2104                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2105                         cmd_flags = 0;
2106
2107                         /* handle broadcast filters by updating the broadcast
2108                          * promiscuous flag instead of deleting a MAC filter.
2109                          */
2110                         if (is_broadcast_ether_addr(f->macaddr)) {
2111                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2112
2113                                 hlist_del(&f->hlist);
2114                                 kfree(f);
2115                                 continue;
2116                         }
2117
2118                         /* add to delete list */
2119                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2120                         if (f->vlan == I40E_VLAN_ANY) {
2121                                 del_list[num_del].vlan_tag = 0;
2122                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2123                         } else {
2124                                 del_list[num_del].vlan_tag =
2125                                         cpu_to_le16((u16)(f->vlan));
2126                         }
2127
2128                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2129                         del_list[num_del].flags = cmd_flags;
2130                         num_del++;
2131
2132                         /* flush a full buffer */
2133                         if (num_del == filter_list_len) {
2134                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2135                                                      num_del, &retval);
2136                                 memset(del_list, 0, list_size);
2137                                 num_del = 0;
2138                         }
2139                         /* Release memory for MAC filter entries which were
2140                          * synced up with HW.
2141                          */
2142                         hlist_del(&f->hlist);
2143                         kfree(f);
2144                 }
2145
2146                 if (num_del) {
2147                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2148                                              num_del, &retval);
2149                 }
2150
2151                 kfree(del_list);
2152                 del_list = NULL;
2153         }
2154
2155         if (!hlist_empty(&tmp_add_list)) {
2156                 /* Do all the adds now. */
2157                 filter_list_len = hw->aq.asq_buf_size /
2158                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2159                 list_size = filter_list_len *
2160                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2161                 add_list = kzalloc(list_size, GFP_ATOMIC);
2162                 if (!add_list)
2163                         goto err_no_memory;
2164
2165                 num_add = 0;
2166                 hlist_for_each_entry_safe(f, h, &tmp_add_list, hlist) {
2167                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2168                                      &vsi->state)) {
2169                                 f->state = I40E_FILTER_FAILED;
2170                                 continue;
2171                         }
2172
2173                         /* handle broadcast filters by updating the broadcast
2174                          * promiscuous flag instead of adding a MAC filter.
2175                          */
2176                         if (is_broadcast_ether_addr(f->macaddr)) {
2177                                 u64 key = i40e_addr_to_hkey(f->macaddr);
2178                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2179
2180                                 hlist_del(&f->hlist);
2181                                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
2182                                 continue;
2183                         }
2184
2185                         /* add to add array */
2186                         if (num_add == 0)
2187                                 add_head = f;
2188                         cmd_flags = 0;
2189                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2190                         if (f->vlan == I40E_VLAN_ANY) {
2191                                 add_list[num_add].vlan_tag = 0;
2192                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2193                         } else {
2194                                 add_list[num_add].vlan_tag =
2195                                         cpu_to_le16((u16)(f->vlan));
2196                         }
2197                         add_list[num_add].queue_number = 0;
2198                         /* set invalid match method for later detection */
2199                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2200                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2201                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2202                         num_add++;
2203
2204                         /* flush a full buffer */
2205                         if (num_add == filter_list_len) {
2206                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2207                                                      add_head, num_add,
2208                                                      &promisc_changed);
2209                                 memset(add_list, 0, list_size);
2210                                 num_add = 0;
2211                         }
2212                 }
2213                 if (num_add) {
2214                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2215                                              num_add, &promisc_changed);
2216                 }
2217                 /* Now move all of the filters from the temp add list back to
2218                  * the VSI's list.
2219                  */
2220                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2221                 hlist_for_each_entry_safe(f, h, &tmp_add_list, hlist) {
2222                         u64 key = i40e_addr_to_hkey(f->macaddr);
2223
2224                         hlist_del(&f->hlist);
2225                         hash_add(vsi->mac_filter_hash, &f->hlist, key);
2226                 }
2227                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2228                 kfree(add_list);
2229                 add_list = NULL;
2230         }
2231
2232         /* Determine the number of active and failed filters. */
2233         spin_lock_bh(&vsi->mac_filter_hash_lock);
2234         vsi->active_filters = 0;
2235         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2236                 if (f->state == I40E_FILTER_ACTIVE)
2237                         vsi->active_filters++;
2238                 else if (f->state == I40E_FILTER_FAILED)
2239                         failed_filters++;
2240         }
2241         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2242
2243         /* If promiscuous mode has changed, we need to calculate a new
2244          * threshold for when we are safe to exit
2245          */
2246         if (promisc_changed)
2247                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2248
2249         /* Check if we are able to exit overflow promiscuous mode. We can
2250          * safely exit if we didn't just enter, we no longer have any failed
2251          * filters, and we have reduced filters below the threshold value.
2252          */
2253         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2254             !promisc_changed && !failed_filters &&
2255             (vsi->active_filters < vsi->promisc_threshold)) {
2256                 dev_info(&pf->pdev->dev,
2257                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2258                          vsi_name);
2259                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2260                 promisc_changed = true;
2261                 vsi->promisc_threshold = 0;
2262         }
2263
2264         /* if the VF is not trusted do not do promisc */
2265         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2266                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2267                 goto out;
2268         }
2269
2270         /* check for changes in promiscuous modes */
2271         if (changed_flags & IFF_ALLMULTI) {
2272                 bool cur_multipromisc;
2273
2274                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2275                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2276                                                                vsi->seid,
2277                                                                cur_multipromisc,
2278                                                                NULL);
2279                 if (aq_ret) {
2280                         retval = i40e_aq_rc_to_posix(aq_ret,
2281                                                      hw->aq.asq_last_status);
2282                         dev_info(&pf->pdev->dev,
2283                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2284                                  vsi_name,
2285                                  i40e_stat_str(hw, aq_ret),
2286                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2287                 }
2288         }
2289         if ((changed_flags & IFF_PROMISC) ||
2290             (promisc_changed &&
2291              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2292                 bool cur_promisc;
2293
2294                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2295                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2296                                         &vsi->state));
2297                 if ((vsi->type == I40E_VSI_MAIN) &&
2298                     (pf->lan_veb != I40E_NO_VEB) &&
2299                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2300                         /* set defport ON for Main VSI instead of true promisc
2301                          * this way we will get all unicast/multicast and VLAN
2302                          * promisc behavior but will not get VF or VMDq traffic
2303                          * replicated on the Main VSI.
2304                          */
2305                         if (pf->cur_promisc != cur_promisc) {
2306                                 pf->cur_promisc = cur_promisc;
2307                                 if (cur_promisc)
2308                                         aq_ret =
2309                                               i40e_aq_set_default_vsi(hw,
2310                                                                       vsi->seid,
2311                                                                       NULL);
2312                                 else
2313                                         aq_ret =
2314                                             i40e_aq_clear_default_vsi(hw,
2315                                                                       vsi->seid,
2316                                                                       NULL);
2317                                 if (aq_ret) {
2318                                         retval = i40e_aq_rc_to_posix(aq_ret,
2319                                                         hw->aq.asq_last_status);
2320                                         dev_info(&pf->pdev->dev,
2321                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2322                                                  vsi_name,
2323                                                  i40e_stat_str(hw, aq_ret),
2324                                                  i40e_aq_str(hw,
2325                                                      hw->aq.asq_last_status));
2326                                 }
2327                         }
2328                 } else {
2329                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2330                                                           hw,
2331                                                           vsi->seid,
2332                                                           cur_promisc, NULL,
2333                                                           true);
2334                         if (aq_ret) {
2335                                 retval =
2336                                 i40e_aq_rc_to_posix(aq_ret,
2337                                                     hw->aq.asq_last_status);
2338                                 dev_info(&pf->pdev->dev,
2339                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2340                                          vsi_name,
2341                                          i40e_stat_str(hw, aq_ret),
2342                                          i40e_aq_str(hw,
2343                                                      hw->aq.asq_last_status));
2344                         }
2345                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2346                                                           hw,
2347                                                           vsi->seid,
2348                                                           cur_promisc, NULL);
2349                         if (aq_ret) {
2350                                 retval =
2351                                 i40e_aq_rc_to_posix(aq_ret,
2352                                                     hw->aq.asq_last_status);
2353                                 dev_info(&pf->pdev->dev,
2354                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2355                                          vsi_name,
2356                                          i40e_stat_str(hw, aq_ret),
2357                                          i40e_aq_str(hw,
2358                                                      hw->aq.asq_last_status));
2359                         }
2360                 }
2361                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2362                                                    vsi->seid,
2363                                                    cur_promisc, NULL);
2364                 if (aq_ret) {
2365                         retval = i40e_aq_rc_to_posix(aq_ret,
2366                                                      pf->hw.aq.asq_last_status);
2367                         dev_info(&pf->pdev->dev,
2368                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2369                                          i40e_stat_str(hw, aq_ret),
2370                                          i40e_aq_str(hw,
2371                                                      hw->aq.asq_last_status));
2372                 }
2373         }
2374 out:
2375         /* if something went wrong then set the changed flag so we try again */
2376         if (retval)
2377                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2378
2379         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2380         return retval;
2381
2382 err_no_memory:
2383         /* Restore elements on the temporary add and delete lists */
2384         spin_lock_bh(&vsi->mac_filter_hash_lock);
2385 err_no_memory_locked:
2386         i40e_undo_filter_entries(vsi, &tmp_del_list);
2387         i40e_undo_filter_entries(vsi, &tmp_add_list);
2388         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2389
2390         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2391         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2392         return -ENOMEM;
2393 }
2394
2395 /**
2396  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2397  * @pf: board private structure
2398  **/
2399 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2400 {
2401         int v;
2402
2403         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2404                 return;
2405         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2406
2407         for (v = 0; v < pf->num_alloc_vsi; v++) {
2408                 if (pf->vsi[v] &&
2409                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2410                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2411
2412                         if (ret) {
2413                                 /* come back and try again later */
2414                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2415                                 break;
2416                         }
2417                 }
2418         }
2419 }
2420
2421 /**
2422  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2423  * @netdev: network interface device structure
2424  * @new_mtu: new value for maximum frame size
2425  *
2426  * Returns 0 on success, negative on failure
2427  **/
2428 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2429 {
2430         struct i40e_netdev_priv *np = netdev_priv(netdev);
2431         struct i40e_vsi *vsi = np->vsi;
2432
2433         netdev_info(netdev, "changing MTU from %d to %d\n",
2434                     netdev->mtu, new_mtu);
2435         netdev->mtu = new_mtu;
2436         if (netif_running(netdev))
2437                 i40e_vsi_reinit_locked(vsi);
2438         i40e_notify_client_of_l2_param_changes(vsi);
2439         return 0;
2440 }
2441
2442 /**
2443  * i40e_ioctl - Access the hwtstamp interface
2444  * @netdev: network interface device structure
2445  * @ifr: interface request data
2446  * @cmd: ioctl command
2447  **/
2448 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2449 {
2450         struct i40e_netdev_priv *np = netdev_priv(netdev);
2451         struct i40e_pf *pf = np->vsi->back;
2452
2453         switch (cmd) {
2454         case SIOCGHWTSTAMP:
2455                 return i40e_ptp_get_ts_config(pf, ifr);
2456         case SIOCSHWTSTAMP:
2457                 return i40e_ptp_set_ts_config(pf, ifr);
2458         default:
2459                 return -EOPNOTSUPP;
2460         }
2461 }
2462
2463 /**
2464  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2465  * @vsi: the vsi being adjusted
2466  **/
2467 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2468 {
2469         struct i40e_vsi_context ctxt;
2470         i40e_status ret;
2471
2472         if ((vsi->info.valid_sections &
2473              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2474             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2475                 return;  /* already enabled */
2476
2477         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2478         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2479                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2480
2481         ctxt.seid = vsi->seid;
2482         ctxt.info = vsi->info;
2483         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2484         if (ret) {
2485                 dev_info(&vsi->back->pdev->dev,
2486                          "update vlan stripping failed, err %s aq_err %s\n",
2487                          i40e_stat_str(&vsi->back->hw, ret),
2488                          i40e_aq_str(&vsi->back->hw,
2489                                      vsi->back->hw.aq.asq_last_status));
2490         }
2491 }
2492
2493 /**
2494  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2495  * @vsi: the vsi being adjusted
2496  **/
2497 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2498 {
2499         struct i40e_vsi_context ctxt;
2500         i40e_status ret;
2501
2502         if ((vsi->info.valid_sections &
2503              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2504             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2505              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2506                 return;  /* already disabled */
2507
2508         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2509         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2510                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2511
2512         ctxt.seid = vsi->seid;
2513         ctxt.info = vsi->info;
2514         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2515         if (ret) {
2516                 dev_info(&vsi->back->pdev->dev,
2517                          "update vlan stripping failed, err %s aq_err %s\n",
2518                          i40e_stat_str(&vsi->back->hw, ret),
2519                          i40e_aq_str(&vsi->back->hw,
2520                                      vsi->back->hw.aq.asq_last_status));
2521         }
2522 }
2523
2524 /**
2525  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2526  * @netdev: network interface to be adjusted
2527  * @features: netdev features to test if VLAN offload is enabled or not
2528  **/
2529 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2530 {
2531         struct i40e_netdev_priv *np = netdev_priv(netdev);
2532         struct i40e_vsi *vsi = np->vsi;
2533
2534         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2535                 i40e_vlan_stripping_enable(vsi);
2536         else
2537                 i40e_vlan_stripping_disable(vsi);
2538 }
2539
2540 /**
2541  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2542  * @vsi: the vsi being configured
2543  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2544  *
2545  * This is a helper function for adding a new MAC/VLAN filter with the
2546  * specified VLAN for each existing MAC address already in the hash table.
2547  * This function does *not* perform any accounting to update filters based on
2548  * VLAN mode.
2549  *
2550  * NOTE: this function expects to be called while under the
2551  * mac_filter_hash_lock
2552  **/
2553 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2554 {
2555         struct i40e_mac_filter *f, *add_f;
2556         struct hlist_node *h;
2557         int bkt;
2558
2559         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2560                 if (f->state == I40E_FILTER_REMOVE)
2561                         continue;
2562                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2563                 if (!add_f) {
2564                         dev_info(&vsi->back->pdev->dev,
2565                                  "Could not add vlan filter %d for %pM\n",
2566                                  vid, f->macaddr);
2567                         return -ENOMEM;
2568                 }
2569         }
2570
2571         return 0;
2572 }
2573
2574 /**
2575  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2576  * @vsi: the VSI being configured
2577  * @vid: VLAN id to be added (0 = untagged only , -1 = any)
2578  **/
2579 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2580 {
2581         int err;
2582
2583         /* Locked once because all functions invoked below iterates list*/
2584         spin_lock_bh(&vsi->mac_filter_hash_lock);
2585         err = i40e_add_vlan_all_mac(vsi, vid);
2586         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2587         if (err)
2588                 return err;
2589
2590         /* schedule our worker thread which will take care of
2591          * applying the new filter changes
2592          */
2593         i40e_service_event_schedule(vsi->back);
2594         return 0;
2595 }
2596
2597 /**
2598  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2599  * @vsi: the vsi being configured
2600  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2601  *
2602  * This function should be used to remove all VLAN filters which match the
2603  * given VID. It does not schedule the service event and does not take the
2604  * mac_filter_hash_lock so it may be combined with other operations under
2605  * a single invocation of the mac_filter_hash_lock.
2606  *
2607  * NOTE: this function expects to be called while under the
2608  * mac_filter_hash_lock
2609  */
2610 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2611 {
2612         struct i40e_mac_filter *f;
2613         struct hlist_node *h;
2614         int bkt;
2615
2616         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2617                 if (f->vlan == vid)
2618                         __i40e_del_filter(vsi, f);
2619         }
2620 }
2621
2622 /**
2623  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
2624  * @vsi: the VSI being configured
2625  * @vid: VLAN id to be removed (0 = untagged only , -1 = any)
2626  **/
2627 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2628 {
2629         spin_lock_bh(&vsi->mac_filter_hash_lock);
2630         i40e_rm_vlan_all_mac(vsi, vid);
2631         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2632
2633         /* schedule our worker thread which will take care of
2634          * applying the new filter changes
2635          */
2636         i40e_service_event_schedule(vsi->back);
2637 }
2638
2639 /**
2640  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2641  * @netdev: network interface to be adjusted
2642  * @vid: vlan id to be added
2643  *
2644  * net_device_ops implementation for adding vlan ids
2645  **/
2646 #ifdef I40E_FCOE
2647 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2648                          __always_unused __be16 proto, u16 vid)
2649 #else
2650 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2651                                 __always_unused __be16 proto, u16 vid)
2652 #endif
2653 {
2654         struct i40e_netdev_priv *np = netdev_priv(netdev);
2655         struct i40e_vsi *vsi = np->vsi;
2656         int ret = 0;
2657
2658         if (vid >= VLAN_N_VID)
2659                 return -EINVAL;
2660
2661         /* If the network stack called us with vid = 0 then
2662          * it is asking to receive priority tagged packets with
2663          * vlan id 0.  Our HW receives them by default when configured
2664          * to receive untagged packets so there is no need to add an
2665          * extra filter for vlan 0 tagged packets.
2666          */
2667         if (vid)
2668                 ret = i40e_vsi_add_vlan(vsi, vid);
2669
2670         if (!ret)
2671                 set_bit(vid, vsi->active_vlans);
2672
2673         return ret;
2674 }
2675
2676 /**
2677  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2678  * @netdev: network interface to be adjusted
2679  * @vid: vlan id to be removed
2680  *
2681  * net_device_ops implementation for removing vlan ids
2682  **/
2683 #ifdef I40E_FCOE
2684 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2685                           __always_unused __be16 proto, u16 vid)
2686 #else
2687 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2688                                  __always_unused __be16 proto, u16 vid)
2689 #endif
2690 {
2691         struct i40e_netdev_priv *np = netdev_priv(netdev);
2692         struct i40e_vsi *vsi = np->vsi;
2693
2694         /* return code is ignored as there is nothing a user
2695          * can do about failure to remove and a log message was
2696          * already printed from the other function
2697          */
2698         i40e_vsi_kill_vlan(vsi, vid);
2699
2700         clear_bit(vid, vsi->active_vlans);
2701
2702         return 0;
2703 }
2704
2705 /**
2706  * i40e_macaddr_init - explicitly write the mac address filters
2707  *
2708  * @vsi: pointer to the vsi
2709  * @macaddr: the MAC address
2710  *
2711  * This is needed when the macaddr has been obtained by other
2712  * means than the default, e.g., from Open Firmware or IDPROM.
2713  * Returns 0 on success, negative on failure
2714  **/
2715 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2716 {
2717         int ret;
2718         struct i40e_aqc_add_macvlan_element_data element;
2719
2720         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2721                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2722                                         macaddr, NULL);
2723         if (ret) {
2724                 dev_info(&vsi->back->pdev->dev,
2725                          "Addr change for VSI failed: %d\n", ret);
2726                 return -EADDRNOTAVAIL;
2727         }
2728
2729         memset(&element, 0, sizeof(element));
2730         ether_addr_copy(element.mac_addr, macaddr);
2731         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2732         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2733         if (ret) {
2734                 dev_info(&vsi->back->pdev->dev,
2735                          "add filter failed err %s aq_err %s\n",
2736                          i40e_stat_str(&vsi->back->hw, ret),
2737                          i40e_aq_str(&vsi->back->hw,
2738                                      vsi->back->hw.aq.asq_last_status));
2739         }
2740         return ret;
2741 }
2742
2743 /**
2744  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2745  * @vsi: the vsi being brought back up
2746  **/
2747 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2748 {
2749         u16 vid;
2750
2751         if (!vsi->netdev)
2752                 return;
2753
2754         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2755
2756         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2757                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2758                                      vid);
2759 }
2760
2761 /**
2762  * i40e_vsi_add_pvid - Add pvid for the VSI
2763  * @vsi: the vsi being adjusted
2764  * @vid: the vlan id to set as a PVID
2765  **/
2766 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2767 {
2768         struct i40e_vsi_context ctxt;
2769         i40e_status ret;
2770
2771         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2772         vsi->info.pvid = cpu_to_le16(vid);
2773         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2774                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2775                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2776
2777         ctxt.seid = vsi->seid;
2778         ctxt.info = vsi->info;
2779         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2780         if (ret) {
2781                 dev_info(&vsi->back->pdev->dev,
2782                          "add pvid failed, err %s aq_err %s\n",
2783                          i40e_stat_str(&vsi->back->hw, ret),
2784                          i40e_aq_str(&vsi->back->hw,
2785                                      vsi->back->hw.aq.asq_last_status));
2786                 return -ENOENT;
2787         }
2788
2789         return 0;
2790 }
2791
2792 /**
2793  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2794  * @vsi: the vsi being adjusted
2795  *
2796  * Just use the vlan_rx_register() service to put it back to normal
2797  **/
2798 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2799 {
2800         i40e_vlan_stripping_disable(vsi);
2801
2802         vsi->info.pvid = 0;
2803 }
2804
2805 /**
2806  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2807  * @vsi: ptr to the VSI
2808  *
2809  * If this function returns with an error, then it's possible one or
2810  * more of the rings is populated (while the rest are not).  It is the
2811  * callers duty to clean those orphaned rings.
2812  *
2813  * Return 0 on success, negative on failure
2814  **/
2815 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2816 {
2817         int i, err = 0;
2818
2819         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2820                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2821
2822         return err;
2823 }
2824
2825 /**
2826  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2827  * @vsi: ptr to the VSI
2828  *
2829  * Free VSI's transmit software resources
2830  **/
2831 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2832 {
2833         int i;
2834
2835         if (!vsi->tx_rings)
2836                 return;
2837
2838         for (i = 0; i < vsi->num_queue_pairs; i++)
2839                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2840                         i40e_free_tx_resources(vsi->tx_rings[i]);
2841 }
2842
2843 /**
2844  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2845  * @vsi: ptr to the VSI
2846  *
2847  * If this function returns with an error, then it's possible one or
2848  * more of the rings is populated (while the rest are not).  It is the
2849  * callers duty to clean those orphaned rings.
2850  *
2851  * Return 0 on success, negative on failure
2852  **/
2853 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2854 {
2855         int i, err = 0;
2856
2857         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2858                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2859 #ifdef I40E_FCOE
2860         i40e_fcoe_setup_ddp_resources(vsi);
2861 #endif
2862         return err;
2863 }
2864
2865 /**
2866  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2867  * @vsi: ptr to the VSI
2868  *
2869  * Free all receive software resources
2870  **/
2871 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2872 {
2873         int i;
2874
2875         if (!vsi->rx_rings)
2876                 return;
2877
2878         for (i = 0; i < vsi->num_queue_pairs; i++)
2879                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2880                         i40e_free_rx_resources(vsi->rx_rings[i]);
2881 #ifdef I40E_FCOE
2882         i40e_fcoe_free_ddp_resources(vsi);
2883 #endif
2884 }
2885
2886 /**
2887  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2888  * @ring: The Tx ring to configure
2889  *
2890  * This enables/disables XPS for a given Tx descriptor ring
2891  * based on the TCs enabled for the VSI that ring belongs to.
2892  **/
2893 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2894 {
2895         struct i40e_vsi *vsi = ring->vsi;
2896         cpumask_var_t mask;
2897
2898         if (!ring->q_vector || !ring->netdev)
2899                 return;
2900
2901         /* Single TC mode enable XPS */
2902         if (vsi->tc_config.numtc <= 1) {
2903                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2904                         netif_set_xps_queue(ring->netdev,
2905                                             &ring->q_vector->affinity_mask,
2906                                             ring->queue_index);
2907         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2908                 /* Disable XPS to allow selection based on TC */
2909                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2910                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2911                 free_cpumask_var(mask);
2912         }
2913
2914         /* schedule our worker thread which will take care of
2915          * applying the new filter changes
2916          */
2917         i40e_service_event_schedule(vsi->back);
2918 }
2919
2920 /**
2921  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2922  * @ring: The Tx ring to configure
2923  *
2924  * Configure the Tx descriptor ring in the HMC context.
2925  **/
2926 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2927 {
2928         struct i40e_vsi *vsi = ring->vsi;
2929         u16 pf_q = vsi->base_queue + ring->queue_index;
2930         struct i40e_hw *hw = &vsi->back->hw;
2931         struct i40e_hmc_obj_txq tx_ctx;
2932         i40e_status err = 0;
2933         u32 qtx_ctl = 0;
2934
2935         /* some ATR related tx ring init */
2936         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2937                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2938                 ring->atr_count = 0;
2939         } else {
2940                 ring->atr_sample_rate = 0;
2941         }
2942
2943         /* configure XPS */
2944         i40e_config_xps_tx_ring(ring);
2945
2946         /* clear the context structure first */
2947         memset(&tx_ctx, 0, sizeof(tx_ctx));
2948
2949         tx_ctx.new_context = 1;
2950         tx_ctx.base = (ring->dma / 128);
2951         tx_ctx.qlen = ring->count;
2952         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2953                                                I40E_FLAG_FD_ATR_ENABLED));
2954 #ifdef I40E_FCOE
2955         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2956 #endif
2957         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2958         /* FDIR VSI tx ring can still use RS bit and writebacks */
2959         if (vsi->type != I40E_VSI_FDIR)
2960                 tx_ctx.head_wb_ena = 1;
2961         tx_ctx.head_wb_addr = ring->dma +
2962                               (ring->count * sizeof(struct i40e_tx_desc));
2963
2964         /* As part of VSI creation/update, FW allocates certain
2965          * Tx arbitration queue sets for each TC enabled for
2966          * the VSI. The FW returns the handles to these queue
2967          * sets as part of the response buffer to Add VSI,
2968          * Update VSI, etc. AQ commands. It is expected that
2969          * these queue set handles be associated with the Tx
2970          * queues by the driver as part of the TX queue context
2971          * initialization. This has to be done regardless of
2972          * DCB as by default everything is mapped to TC0.
2973          */
2974         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2975         tx_ctx.rdylist_act = 0;
2976
2977         /* clear the context in the HMC */
2978         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2979         if (err) {
2980                 dev_info(&vsi->back->pdev->dev,
2981                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2982                          ring->queue_index, pf_q, err);
2983                 return -ENOMEM;
2984         }
2985
2986         /* set the context in the HMC */
2987         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2988         if (err) {
2989                 dev_info(&vsi->back->pdev->dev,
2990                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2991                          ring->queue_index, pf_q, err);
2992                 return -ENOMEM;
2993         }
2994
2995         /* Now associate this queue with this PCI function */
2996         if (vsi->type == I40E_VSI_VMDQ2) {
2997                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2998                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2999                            I40E_QTX_CTL_VFVM_INDX_MASK;
3000         } else {
3001                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3002         }
3003
3004         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3005                     I40E_QTX_CTL_PF_INDX_MASK);
3006         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3007         i40e_flush(hw);
3008
3009         /* cache tail off for easier writes later */
3010         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3011
3012         return 0;
3013 }
3014
3015 /**
3016  * i40e_configure_rx_ring - Configure a receive ring context
3017  * @ring: The Rx ring to configure
3018  *
3019  * Configure the Rx descriptor ring in the HMC context.
3020  **/
3021 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3022 {
3023         struct i40e_vsi *vsi = ring->vsi;
3024         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3025         u16 pf_q = vsi->base_queue + ring->queue_index;
3026         struct i40e_hw *hw = &vsi->back->hw;
3027         struct i40e_hmc_obj_rxq rx_ctx;
3028         i40e_status err = 0;
3029
3030         ring->state = 0;
3031
3032         /* clear the context structure first */
3033         memset(&rx_ctx, 0, sizeof(rx_ctx));
3034
3035         ring->rx_buf_len = vsi->rx_buf_len;
3036
3037         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
3038
3039         rx_ctx.base = (ring->dma / 128);
3040         rx_ctx.qlen = ring->count;
3041
3042         /* use 32 byte descriptors */
3043         rx_ctx.dsize = 1;
3044
3045         /* descriptor type is always zero
3046          * rx_ctx.dtype = 0;
3047          */
3048         rx_ctx.hsplit_0 = 0;
3049
3050         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3051         if (hw->revision_id == 0)
3052                 rx_ctx.lrxqthresh = 0;
3053         else
3054                 rx_ctx.lrxqthresh = 2;
3055         rx_ctx.crcstrip = 1;
3056         rx_ctx.l2tsel = 1;
3057         /* this controls whether VLAN is stripped from inner headers */
3058         rx_ctx.showiv = 0;
3059 #ifdef I40E_FCOE
3060         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
3061 #endif
3062         /* set the prefena field to 1 because the manual says to */
3063         rx_ctx.prefena = 1;
3064
3065         /* clear the context in the HMC */
3066         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3067         if (err) {
3068                 dev_info(&vsi->back->pdev->dev,
3069                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3070                          ring->queue_index, pf_q, err);
3071                 return -ENOMEM;
3072         }
3073
3074         /* set the context in the HMC */
3075         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3076         if (err) {
3077                 dev_info(&vsi->back->pdev->dev,
3078                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3079                          ring->queue_index, pf_q, err);
3080                 return -ENOMEM;
3081         }
3082
3083         /* cache tail for quicker writes, and clear the reg before use */
3084         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3085         writel(0, ring->tail);
3086
3087         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3088
3089         return 0;
3090 }
3091
3092 /**
3093  * i40e_vsi_configure_tx - Configure the VSI for Tx
3094  * @vsi: VSI structure describing this set of rings and resources
3095  *
3096  * Configure the Tx VSI for operation.
3097  **/
3098 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3099 {
3100         int err = 0;
3101         u16 i;
3102
3103         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3104                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3105
3106         return err;
3107 }
3108
3109 /**
3110  * i40e_vsi_configure_rx - Configure the VSI for Rx
3111  * @vsi: the VSI being configured
3112  *
3113  * Configure the Rx VSI for operation.
3114  **/
3115 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3116 {
3117         int err = 0;
3118         u16 i;
3119
3120         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3121                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3122                                + ETH_FCS_LEN + VLAN_HLEN;
3123         else
3124                 vsi->max_frame = I40E_RXBUFFER_2048;
3125
3126         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3127
3128 #ifdef I40E_FCOE
3129         /* setup rx buffer for FCoE */
3130         if ((vsi->type == I40E_VSI_FCOE) &&
3131             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3132                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3133                 vsi->max_frame = I40E_RXBUFFER_3072;
3134         }
3135
3136 #endif /* I40E_FCOE */
3137         /* round up for the chip's needs */
3138         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3139                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3140
3141         /* set up individual rings */
3142         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3143                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3144
3145         return err;
3146 }
3147
3148 /**
3149  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3150  * @vsi: ptr to the VSI
3151  **/
3152 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3153 {
3154         struct i40e_ring *tx_ring, *rx_ring;
3155         u16 qoffset, qcount;
3156         int i, n;
3157
3158         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3159                 /* Reset the TC information */
3160                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3161                         rx_ring = vsi->rx_rings[i];
3162                         tx_ring = vsi->tx_rings[i];
3163                         rx_ring->dcb_tc = 0;
3164                         tx_ring->dcb_tc = 0;
3165                 }
3166         }
3167
3168         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3169                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3170                         continue;
3171
3172                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3173                 qcount = vsi->tc_config.tc_info[n].qcount;
3174                 for (i = qoffset; i < (qoffset + qcount); i++) {
3175                         rx_ring = vsi->rx_rings[i];
3176                         tx_ring = vsi->tx_rings[i];
3177                         rx_ring->dcb_tc = n;
3178                         tx_ring->dcb_tc = n;
3179                 }
3180         }
3181 }
3182
3183 /**
3184  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3185  * @vsi: ptr to the VSI
3186  **/
3187 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3188 {
3189         struct i40e_pf *pf = vsi->back;
3190         int err;
3191
3192         if (vsi->netdev)
3193                 i40e_set_rx_mode(vsi->netdev);
3194
3195         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3196                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3197                 if (err) {
3198                         dev_warn(&pf->pdev->dev,
3199                                  "could not set up macaddr; err %d\n", err);
3200                 }
3201         }
3202 }
3203
3204 /**
3205  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3206  * @vsi: Pointer to the targeted VSI
3207  *
3208  * This function replays the hlist on the hw where all the SB Flow Director
3209  * filters were saved.
3210  **/
3211 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3212 {
3213         struct i40e_fdir_filter *filter;
3214         struct i40e_pf *pf = vsi->back;
3215         struct hlist_node *node;
3216
3217         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3218                 return;
3219
3220         hlist_for_each_entry_safe(filter, node,
3221                                   &pf->fdir_filter_list, fdir_node) {
3222                 i40e_add_del_fdir(vsi, filter, true);
3223         }
3224 }
3225
3226 /**
3227  * i40e_vsi_configure - Set up the VSI for action
3228  * @vsi: the VSI being configured
3229  **/
3230 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3231 {
3232         int err;
3233
3234         i40e_set_vsi_rx_mode(vsi);
3235         i40e_restore_vlan(vsi);
3236         i40e_vsi_config_dcb_rings(vsi);
3237         err = i40e_vsi_configure_tx(vsi);
3238         if (!err)
3239                 err = i40e_vsi_configure_rx(vsi);
3240
3241         return err;
3242 }
3243
3244 /**
3245  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3246  * @vsi: the VSI being configured
3247  **/
3248 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3249 {
3250         struct i40e_pf *pf = vsi->back;
3251         struct i40e_hw *hw = &pf->hw;
3252         u16 vector;
3253         int i, q;
3254         u32 qp;
3255
3256         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3257          * and PFINT_LNKLSTn registers, e.g.:
3258          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3259          */
3260         qp = vsi->base_queue;
3261         vector = vsi->base_vector;
3262         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3263                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3264
3265                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3266                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3267                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3268                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3269                      q_vector->rx.itr);
3270                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3271                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3272                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3273                      q_vector->tx.itr);
3274                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3275                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3276
3277                 /* Linked list for the queuepairs assigned to this vector */
3278                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3279                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3280                         u32 val;
3281
3282                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3283                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3284                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3285                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3286                               (I40E_QUEUE_TYPE_TX
3287                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3288
3289                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3290
3291                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3292                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3293                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3294                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3295                               (I40E_QUEUE_TYPE_RX
3296                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3297
3298                         /* Terminate the linked list */
3299                         if (q == (q_vector->num_ringpairs - 1))
3300                                 val |= (I40E_QUEUE_END_OF_LIST
3301                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3302
3303                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3304                         qp++;
3305                 }
3306         }
3307
3308         i40e_flush(hw);
3309 }
3310
3311 /**
3312  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3313  * @hw: ptr to the hardware info
3314  **/
3315 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3316 {
3317         struct i40e_hw *hw = &pf->hw;
3318         u32 val;
3319
3320         /* clear things first */
3321         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3322         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3323
3324         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3325               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3326               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3327               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3328               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3329               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3330               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3331               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3332
3333         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3334                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3335
3336         if (pf->flags & I40E_FLAG_PTP)
3337                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3338
3339         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3340
3341         /* SW_ITR_IDX = 0, but don't change INTENA */
3342         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3343                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3344
3345         /* OTHER_ITR_IDX = 0 */
3346         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3347 }
3348
3349 /**
3350  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3351  * @vsi: the VSI being configured
3352  **/
3353 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3354 {
3355         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3356         struct i40e_pf *pf = vsi->back;
3357         struct i40e_hw *hw = &pf->hw;
3358         u32 val;
3359
3360         /* set the ITR configuration */
3361         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3362         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3363         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3364         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3365         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3366         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3367         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3368
3369         i40e_enable_misc_int_causes(pf);
3370
3371         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3372         wr32(hw, I40E_PFINT_LNKLST0, 0);
3373
3374         /* Associate the queue pair to the vector and enable the queue int */
3375         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3376               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3377               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3378
3379         wr32(hw, I40E_QINT_RQCTL(0), val);
3380
3381         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3382               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3383               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3384
3385         wr32(hw, I40E_QINT_TQCTL(0), val);
3386         i40e_flush(hw);
3387 }
3388
3389 /**
3390  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3391  * @pf: board private structure
3392  **/
3393 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3394 {
3395         struct i40e_hw *hw = &pf->hw;
3396
3397         wr32(hw, I40E_PFINT_DYN_CTL0,
3398              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3399         i40e_flush(hw);
3400 }
3401
3402 /**
3403  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3404  * @pf: board private structure
3405  * @clearpba: true when all pending interrupt events should be cleared
3406  **/
3407 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3408 {
3409         struct i40e_hw *hw = &pf->hw;
3410         u32 val;
3411
3412         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3413               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3414               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3415
3416         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3417         i40e_flush(hw);
3418 }
3419
3420 /**
3421  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3422  * @irq: interrupt number
3423  * @data: pointer to a q_vector
3424  **/
3425 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3426 {
3427         struct i40e_q_vector *q_vector = data;
3428
3429         if (!q_vector->tx.ring && !q_vector->rx.ring)
3430                 return IRQ_HANDLED;
3431
3432         napi_schedule_irqoff(&q_vector->napi);
3433
3434         return IRQ_HANDLED;
3435 }
3436
3437 /**
3438  * i40e_irq_affinity_notify - Callback for affinity changes
3439  * @notify: context as to what irq was changed
3440  * @mask: the new affinity mask
3441  *
3442  * This is a callback function used by the irq_set_affinity_notifier function
3443  * so that we may register to receive changes to the irq affinity masks.
3444  **/
3445 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3446                                      const cpumask_t *mask)
3447 {
3448         struct i40e_q_vector *q_vector =
3449                 container_of(notify, struct i40e_q_vector, affinity_notify);
3450
3451         q_vector->affinity_mask = *mask;
3452 }
3453
3454 /**
3455  * i40e_irq_affinity_release - Callback for affinity notifier release
3456  * @ref: internal core kernel usage
3457  *
3458  * This is a callback function used by the irq_set_affinity_notifier function
3459  * to inform the current notification subscriber that they will no longer
3460  * receive notifications.
3461  **/
3462 static void i40e_irq_affinity_release(struct kref *ref) {}
3463
3464 /**
3465  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3466  * @vsi: the VSI being configured
3467  * @basename: name for the vector
3468  *
3469  * Allocates MSI-X vectors and requests interrupts from the kernel.
3470  **/
3471 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3472 {
3473         int q_vectors = vsi->num_q_vectors;
3474         struct i40e_pf *pf = vsi->back;
3475         int base = vsi->base_vector;
3476         int rx_int_idx = 0;
3477         int tx_int_idx = 0;
3478         int vector, err;
3479         int irq_num;
3480
3481         for (vector = 0; vector < q_vectors; vector++) {
3482                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3483
3484                 irq_num = pf->msix_entries[base + vector].vector;
3485
3486                 if (q_vector->tx.ring && q_vector->rx.ring) {
3487                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3488                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3489                         tx_int_idx++;
3490                 } else if (q_vector->rx.ring) {
3491                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3492                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3493                 } else if (q_vector->tx.ring) {
3494                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3495                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3496                 } else {
3497                         /* skip this unused q_vector */
3498                         continue;
3499                 }
3500                 err = request_irq(irq_num,
3501                                   vsi->irq_handler,
3502                                   0,
3503                                   q_vector->name,
3504                                   q_vector);
3505                 if (err) {
3506                         dev_info(&pf->pdev->dev,
3507                                  "MSIX request_irq failed, error: %d\n", err);
3508                         goto free_queue_irqs;
3509                 }
3510
3511                 /* register for affinity change notifications */
3512                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3513                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3514                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3515                 /* assign the mask for this irq */
3516                 irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
3517         }
3518
3519         vsi->irqs_ready = true;
3520         return 0;
3521
3522 free_queue_irqs:
3523         while (vector) {
3524                 vector--;
3525                 irq_num = pf->msix_entries[base + vector].vector;
3526                 irq_set_affinity_notifier(irq_num, NULL);
3527                 irq_set_affinity_hint(irq_num, NULL);
3528                 free_irq(irq_num, &vsi->q_vectors[vector]);
3529         }
3530         return err;
3531 }
3532
3533 /**
3534  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3535  * @vsi: the VSI being un-configured
3536  **/
3537 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3538 {
3539         struct i40e_pf *pf = vsi->back;
3540         struct i40e_hw *hw = &pf->hw;
3541         int base = vsi->base_vector;
3542         int i;
3543
3544         for (i = 0; i < vsi->num_queue_pairs; i++) {
3545                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3546                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3547         }
3548
3549         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3550                 for (i = vsi->base_vector;
3551                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3552                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3553
3554                 i40e_flush(hw);
3555                 for (i = 0; i < vsi->num_q_vectors; i++)
3556                         synchronize_irq(pf->msix_entries[i + base].vector);
3557         } else {
3558                 /* Legacy and MSI mode - this stops all interrupt handling */
3559                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3560                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3561                 i40e_flush(hw);
3562                 synchronize_irq(pf->pdev->irq);
3563         }
3564 }
3565
3566 /**
3567  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3568  * @vsi: the VSI being configured
3569  **/
3570 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3571 {
3572         struct i40e_pf *pf = vsi->back;
3573         int i;
3574
3575         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3576                 for (i = 0; i < vsi->num_q_vectors; i++)
3577                         i40e_irq_dynamic_enable(vsi, i);
3578         } else {
3579                 i40e_irq_dynamic_enable_icr0(pf, true);
3580         }
3581
3582         i40e_flush(&pf->hw);
3583         return 0;
3584 }
3585
3586 /**
3587  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3588  * @pf: board private structure
3589  **/
3590 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3591 {
3592         /* Disable ICR 0 */
3593         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3594         i40e_flush(&pf->hw);
3595 }
3596
3597 /**
3598  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3599  * @irq: interrupt number
3600  * @data: pointer to a q_vector
3601  *
3602  * This is the handler used for all MSI/Legacy interrupts, and deals
3603  * with both queue and non-queue interrupts.  This is also used in
3604  * MSIX mode to handle the non-queue interrupts.
3605  **/
3606 static irqreturn_t i40e_intr(int irq, void *data)
3607 {
3608         struct i40e_pf *pf = (struct i40e_pf *)data;
3609         struct i40e_hw *hw = &pf->hw;
3610         irqreturn_t ret = IRQ_NONE;
3611         u32 icr0, icr0_remaining;
3612         u32 val, ena_mask;
3613
3614         icr0 = rd32(hw, I40E_PFINT_ICR0);
3615         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3616
3617         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3618         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3619                 goto enable_intr;
3620
3621         /* if interrupt but no bits showing, must be SWINT */
3622         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3623             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3624                 pf->sw_int_count++;
3625
3626         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3627             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3628                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3629                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3630                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3631         }
3632
3633         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3634         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3635                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3636                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3637
3638                 /* We do not have a way to disarm Queue causes while leaving
3639                  * interrupt enabled for all other causes, ideally
3640                  * interrupt should be disabled while we are in NAPI but
3641                  * this is not a performance path and napi_schedule()
3642                  * can deal with rescheduling.
3643                  */
3644                 if (!test_bit(__I40E_DOWN, &pf->state))
3645                         napi_schedule_irqoff(&q_vector->napi);
3646         }
3647
3648         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3649                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3650                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3651                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3652         }
3653
3654         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3655                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3656                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3657         }
3658
3659         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3660                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3661                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3662         }
3663
3664         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3665                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3666                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3667                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3668                 val = rd32(hw, I40E_GLGEN_RSTAT);
3669                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3670                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3671                 if (val == I40E_RESET_CORER) {
3672                         pf->corer_count++;
3673                 } else if (val == I40E_RESET_GLOBR) {
3674                         pf->globr_count++;
3675                 } else if (val == I40E_RESET_EMPR) {
3676                         pf->empr_count++;
3677                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3678                 }
3679         }
3680
3681         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3682                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3683                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3684                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3685                          rd32(hw, I40E_PFHMC_ERRORINFO),
3686                          rd32(hw, I40E_PFHMC_ERRORDATA));
3687         }
3688
3689         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3690                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3691
3692                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3693                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3694                         i40e_ptp_tx_hwtstamp(pf);
3695                 }
3696         }
3697
3698         /* If a critical error is pending we have no choice but to reset the
3699          * device.
3700          * Report and mask out any remaining unexpected interrupts.
3701          */
3702         icr0_remaining = icr0 & ena_mask;
3703         if (icr0_remaining) {
3704                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3705                          icr0_remaining);
3706                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3707                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3708                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3709                         dev_info(&pf->pdev->dev, "device will be reset\n");
3710                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3711                         i40e_service_event_schedule(pf);
3712                 }
3713                 ena_mask &= ~icr0_remaining;
3714         }
3715         ret = IRQ_HANDLED;
3716
3717 enable_intr:
3718         /* re-enable interrupt causes */
3719         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3720         if (!test_bit(__I40E_DOWN, &pf->state)) {
3721                 i40e_service_event_schedule(pf);
3722                 i40e_irq_dynamic_enable_icr0(pf, false);
3723         }
3724
3725         return ret;
3726 }
3727
3728 /**
3729  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3730  * @tx_ring:  tx ring to clean
3731  * @budget:   how many cleans we're allowed
3732  *
3733  * Returns true if there's any budget left (e.g. the clean is finished)
3734  **/
3735 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3736 {
3737         struct i40e_vsi *vsi = tx_ring->vsi;
3738         u16 i = tx_ring->next_to_clean;
3739         struct i40e_tx_buffer *tx_buf;
3740         struct i40e_tx_desc *tx_desc;
3741
3742         tx_buf = &tx_ring->tx_bi[i];
3743         tx_desc = I40E_TX_DESC(tx_ring, i);
3744         i -= tx_ring->count;
3745
3746         do {
3747                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3748
3749                 /* if next_to_watch is not set then there is no work pending */
3750                 if (!eop_desc)
3751                         break;
3752
3753                 /* prevent any other reads prior to eop_desc */
3754                 read_barrier_depends();
3755
3756                 /* if the descriptor isn't done, no work yet to do */
3757                 if (!(eop_desc->cmd_type_offset_bsz &
3758                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3759                         break;
3760
3761                 /* clear next_to_watch to prevent false hangs */
3762                 tx_buf->next_to_watch = NULL;
3763
3764                 tx_desc->buffer_addr = 0;
3765                 tx_desc->cmd_type_offset_bsz = 0;
3766                 /* move past filter desc */
3767                 tx_buf++;
3768                 tx_desc++;
3769                 i++;
3770                 if (unlikely(!i)) {
3771                         i -= tx_ring->count;
3772                         tx_buf = tx_ring->tx_bi;
3773                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3774                 }
3775                 /* unmap skb header data */
3776                 dma_unmap_single(tx_ring->dev,
3777                                  dma_unmap_addr(tx_buf, dma),
3778                                  dma_unmap_len(tx_buf, len),
3779                                  DMA_TO_DEVICE);
3780                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3781                         kfree(tx_buf->raw_buf);
3782
3783                 tx_buf->raw_buf = NULL;
3784                 tx_buf->tx_flags = 0;
3785                 tx_buf->next_to_watch = NULL;
3786                 dma_unmap_len_set(tx_buf, len, 0);
3787                 tx_desc->buffer_addr = 0;
3788                 tx_desc->cmd_type_offset_bsz = 0;
3789
3790                 /* move us past the eop_desc for start of next FD desc */
3791                 tx_buf++;
3792                 tx_desc++;
3793                 i++;
3794                 if (unlikely(!i)) {
3795                         i -= tx_ring->count;
3796                         tx_buf = tx_ring->tx_bi;
3797                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3798                 }
3799
3800                 /* update budget accounting */
3801                 budget--;
3802         } while (likely(budget));
3803
3804         i += tx_ring->count;
3805         tx_ring->next_to_clean = i;
3806
3807         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3808                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3809
3810         return budget > 0;
3811 }
3812
3813 /**
3814  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3815  * @irq: interrupt number
3816  * @data: pointer to a q_vector
3817  **/
3818 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3819 {
3820         struct i40e_q_vector *q_vector = data;
3821         struct i40e_vsi *vsi;
3822
3823         if (!q_vector->tx.ring)
3824                 return IRQ_HANDLED;
3825
3826         vsi = q_vector->tx.ring->vsi;
3827         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3828
3829         return IRQ_HANDLED;
3830 }
3831
3832 /**
3833  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3834  * @vsi: the VSI being configured
3835  * @v_idx: vector index
3836  * @qp_idx: queue pair index
3837  **/
3838 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3839 {
3840         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3841         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3842         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3843
3844         tx_ring->q_vector = q_vector;
3845         tx_ring->next = q_vector->tx.ring;
3846         q_vector->tx.ring = tx_ring;
3847         q_vector->tx.count++;
3848
3849         rx_ring->q_vector = q_vector;
3850         rx_ring->next = q_vector->rx.ring;
3851         q_vector->rx.ring = rx_ring;
3852         q_vector->rx.count++;
3853 }
3854
3855 /**
3856  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3857  * @vsi: the VSI being configured
3858  *
3859  * This function maps descriptor rings to the queue-specific vectors
3860  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3861  * one vector per queue pair, but on a constrained vector budget, we
3862  * group the queue pairs as "efficiently" as possible.
3863  **/
3864 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3865 {
3866         int qp_remaining = vsi->num_queue_pairs;
3867         int q_vectors = vsi->num_q_vectors;
3868         int num_ringpairs;
3869         int v_start = 0;
3870         int qp_idx = 0;
3871
3872         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3873          * group them so there are multiple queues per vector.
3874          * It is also important to go through all the vectors available to be
3875          * sure that if we don't use all the vectors, that the remaining vectors
3876          * are cleared. This is especially important when decreasing the
3877          * number of queues in use.
3878          */
3879         for (; v_start < q_vectors; v_start++) {
3880                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3881
3882                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3883
3884                 q_vector->num_ringpairs = num_ringpairs;
3885
3886                 q_vector->rx.count = 0;
3887                 q_vector->tx.count = 0;
3888                 q_vector->rx.ring = NULL;
3889                 q_vector->tx.ring = NULL;
3890
3891                 while (num_ringpairs--) {
3892                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3893                         qp_idx++;
3894                         qp_remaining--;
3895                 }
3896         }
3897 }
3898
3899 /**
3900  * i40e_vsi_request_irq - Request IRQ from the OS
3901  * @vsi: the VSI being configured
3902  * @basename: name for the vector
3903  **/
3904 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3905 {
3906         struct i40e_pf *pf = vsi->back;
3907         int err;
3908
3909         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3910                 err = i40e_vsi_request_irq_msix(vsi, basename);
3911         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3912                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3913                                   pf->int_name, pf);
3914         else
3915                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3916                                   pf->int_name, pf);
3917
3918         if (err)
3919                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3920
3921         return err;
3922 }
3923
3924 #ifdef CONFIG_NET_POLL_CONTROLLER
3925 /**
3926  * i40e_netpoll - A Polling 'interrupt' handler
3927  * @netdev: network interface device structure
3928  *
3929  * This is used by netconsole to send skbs without having to re-enable
3930  * interrupts.  It's not called while the normal interrupt routine is executing.
3931  **/
3932 #ifdef I40E_FCOE
3933 void i40e_netpoll(struct net_device *netdev)
3934 #else
3935 static void i40e_netpoll(struct net_device *netdev)
3936 #endif
3937 {
3938         struct i40e_netdev_priv *np = netdev_priv(netdev);
3939         struct i40e_vsi *vsi = np->vsi;
3940         struct i40e_pf *pf = vsi->back;
3941         int i;
3942
3943         /* if interface is down do nothing */
3944         if (test_bit(__I40E_DOWN, &vsi->state))
3945                 return;
3946
3947         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3948                 for (i = 0; i < vsi->num_q_vectors; i++)
3949                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3950         } else {
3951                 i40e_intr(pf->pdev->irq, netdev);
3952         }
3953 }
3954 #endif
3955
3956 /**
3957  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3958  * @pf: the PF being configured
3959  * @pf_q: the PF queue
3960  * @enable: enable or disable state of the queue
3961  *
3962  * This routine will wait for the given Tx queue of the PF to reach the
3963  * enabled or disabled state.
3964  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3965  * multiple retries; else will return 0 in case of success.
3966  **/
3967 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3968 {
3969         int i;
3970         u32 tx_reg;
3971
3972         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3973                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3974                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3975                         break;
3976
3977                 usleep_range(10, 20);
3978         }
3979         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3980                 return -ETIMEDOUT;
3981
3982         return 0;
3983 }
3984
3985 /**
3986  * i40e_vsi_control_tx - Start or stop a VSI's rings
3987  * @vsi: the VSI being configured
3988  * @enable: start or stop the rings
3989  **/
3990 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3991 {
3992         struct i40e_pf *pf = vsi->back;
3993         struct i40e_hw *hw = &pf->hw;
3994         int i, j, pf_q, ret = 0;
3995         u32 tx_reg;
3996
3997         pf_q = vsi->base_queue;
3998         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3999
4000                 /* warn the TX unit of coming changes */
4001                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4002                 if (!enable)
4003                         usleep_range(10, 20);
4004
4005                 for (j = 0; j < 50; j++) {
4006                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4007                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4008                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4009                                 break;
4010                         usleep_range(1000, 2000);
4011                 }
4012                 /* Skip if the queue is already in the requested state */
4013                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4014                         continue;
4015
4016                 /* turn on/off the queue */
4017                 if (enable) {
4018                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4019                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4020                 } else {
4021                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4022                 }
4023
4024                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4025                 /* No waiting for the Tx queue to disable */
4026                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4027                         continue;
4028
4029                 /* wait for the change to finish */
4030                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
4031                 if (ret) {
4032                         dev_info(&pf->pdev->dev,
4033                                  "VSI seid %d Tx ring %d %sable timeout\n",
4034                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4035                         break;
4036                 }
4037         }
4038
4039         if (hw->revision_id == 0)
4040                 mdelay(50);
4041         return ret;
4042 }
4043
4044 /**
4045  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4046  * @pf: the PF being configured
4047  * @pf_q: the PF queue
4048  * @enable: enable or disable state of the queue
4049  *
4050  * This routine will wait for the given Rx queue of the PF to reach the
4051  * enabled or disabled state.
4052  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4053  * multiple retries; else will return 0 in case of success.
4054  **/
4055 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4056 {
4057         int i;
4058         u32 rx_reg;
4059
4060         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4061                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4062                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4063                         break;
4064
4065                 usleep_range(10, 20);
4066         }
4067         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4068                 return -ETIMEDOUT;
4069
4070         return 0;
4071 }
4072
4073 /**
4074  * i40e_vsi_control_rx - Start or stop a VSI's rings
4075  * @vsi: the VSI being configured
4076  * @enable: start or stop the rings
4077  **/
4078 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
4079 {
4080         struct i40e_pf *pf = vsi->back;
4081         struct i40e_hw *hw = &pf->hw;
4082         int i, j, pf_q, ret = 0;
4083         u32 rx_reg;
4084
4085         pf_q = vsi->base_queue;
4086         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4087                 for (j = 0; j < 50; j++) {
4088                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4089                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4090                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4091                                 break;
4092                         usleep_range(1000, 2000);
4093                 }
4094
4095                 /* Skip if the queue is already in the requested state */
4096                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4097                         continue;
4098
4099                 /* turn on/off the queue */
4100                 if (enable)
4101                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4102                 else
4103                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4104                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4105                 /* No waiting for the Tx queue to disable */
4106                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4107                         continue;
4108
4109                 /* wait for the change to finish */
4110                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4111                 if (ret) {
4112                         dev_info(&pf->pdev->dev,
4113                                  "VSI seid %d Rx ring %d %sable timeout\n",
4114                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4115                         break;
4116                 }
4117         }
4118
4119         return ret;
4120 }
4121
4122 /**
4123  * i40e_vsi_start_rings - Start a VSI's rings
4124  * @vsi: the VSI being configured
4125  **/
4126 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4127 {
4128         int ret = 0;
4129
4130         /* do rx first for enable and last for disable */
4131         ret = i40e_vsi_control_rx(vsi, true);
4132         if (ret)
4133                 return ret;
4134         ret = i40e_vsi_control_tx(vsi, true);
4135
4136         return ret;
4137 }
4138
4139 /**
4140  * i40e_vsi_stop_rings - Stop a VSI's rings
4141  * @vsi: the VSI being configured
4142  **/
4143 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4144 {
4145         /* do rx first for enable and last for disable
4146          * Ignore return value, we need to shutdown whatever we can
4147          */
4148         i40e_vsi_control_tx(vsi, false);
4149         i40e_vsi_control_rx(vsi, false);
4150 }
4151
4152 /**
4153  * i40e_vsi_free_irq - Free the irq association with the OS
4154  * @vsi: the VSI being configured
4155  **/
4156 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4157 {
4158         struct i40e_pf *pf = vsi->back;
4159         struct i40e_hw *hw = &pf->hw;
4160         int base = vsi->base_vector;
4161         u32 val, qp;
4162         int i;
4163
4164         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4165                 if (!vsi->q_vectors)
4166                         return;
4167
4168                 if (!vsi->irqs_ready)
4169                         return;
4170
4171                 vsi->irqs_ready = false;
4172                 for (i = 0; i < vsi->num_q_vectors; i++) {
4173                         int irq_num;
4174                         u16 vector;
4175
4176                         vector = i + base;
4177                         irq_num = pf->msix_entries[vector].vector;
4178
4179                         /* free only the irqs that were actually requested */
4180                         if (!vsi->q_vectors[i] ||
4181                             !vsi->q_vectors[i]->num_ringpairs)
4182                                 continue;
4183
4184                         /* clear the affinity notifier in the IRQ descriptor */
4185                         irq_set_affinity_notifier(irq_num, NULL);
4186                         /* clear the affinity_mask in the IRQ descriptor */
4187                         irq_set_affinity_hint(irq_num, NULL);
4188                         synchronize_irq(irq_num);
4189                         free_irq(irq_num, vsi->q_vectors[i]);
4190
4191                         /* Tear down the interrupt queue link list
4192                          *
4193                          * We know that they come in pairs and always
4194                          * the Rx first, then the Tx.  To clear the
4195                          * link list, stick the EOL value into the
4196                          * next_q field of the registers.
4197                          */
4198                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4199                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4200                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4201                         val |= I40E_QUEUE_END_OF_LIST
4202                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4203                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4204
4205                         while (qp != I40E_QUEUE_END_OF_LIST) {
4206                                 u32 next;
4207
4208                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4209
4210                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4211                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4212                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4213                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4214
4215                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4216                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4217
4218                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4219
4220                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4221
4222                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4223                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4224
4225                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4226                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4227                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4228                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4229
4230                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4231                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4232
4233                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4234                                 qp = next;
4235                         }
4236                 }
4237         } else {
4238                 free_irq(pf->pdev->irq, pf);
4239
4240                 val = rd32(hw, I40E_PFINT_LNKLST0);
4241                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4242                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4243                 val |= I40E_QUEUE_END_OF_LIST
4244                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4245                 wr32(hw, I40E_PFINT_LNKLST0, val);
4246
4247                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4248                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4249                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4250                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4251                          I40E_QINT_RQCTL_INTEVENT_MASK);
4252
4253                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4254                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4255
4256                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4257
4258                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4259
4260                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4261                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4262                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4263                          I40E_QINT_TQCTL_INTEVENT_MASK);
4264
4265                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4266                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4267
4268                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4269         }
4270 }
4271
4272 /**
4273  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4274  * @vsi: the VSI being configured
4275  * @v_idx: Index of vector to be freed
4276  *
4277  * This function frees the memory allocated to the q_vector.  In addition if
4278  * NAPI is enabled it will delete any references to the NAPI struct prior
4279  * to freeing the q_vector.
4280  **/
4281 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4282 {
4283         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4284         struct i40e_ring *ring;
4285
4286         if (!q_vector)
4287                 return;
4288
4289         /* disassociate q_vector from rings */
4290         i40e_for_each_ring(ring, q_vector->tx)
4291                 ring->q_vector = NULL;
4292
4293         i40e_for_each_ring(ring, q_vector->rx)
4294                 ring->q_vector = NULL;
4295
4296         /* only VSI w/ an associated netdev is set up w/ NAPI */
4297         if (vsi->netdev)
4298                 netif_napi_del(&q_vector->napi);
4299
4300         vsi->q_vectors[v_idx] = NULL;
4301
4302         kfree_rcu(q_vector, rcu);
4303 }
4304
4305 /**
4306  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4307  * @vsi: the VSI being un-configured
4308  *
4309  * This frees the memory allocated to the q_vectors and
4310  * deletes references to the NAPI struct.
4311  **/
4312 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4313 {
4314         int v_idx;
4315
4316         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4317                 i40e_free_q_vector(vsi, v_idx);
4318 }
4319
4320 /**
4321  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4322  * @pf: board private structure
4323  **/
4324 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4325 {
4326         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4327         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4328                 pci_disable_msix(pf->pdev);
4329                 kfree(pf->msix_entries);
4330                 pf->msix_entries = NULL;
4331                 kfree(pf->irq_pile);
4332                 pf->irq_pile = NULL;
4333         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4334                 pci_disable_msi(pf->pdev);
4335         }
4336         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4337 }
4338
4339 /**
4340  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4341  * @pf: board private structure
4342  *
4343  * We go through and clear interrupt specific resources and reset the structure
4344  * to pre-load conditions
4345  **/
4346 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4347 {
4348         int i;
4349
4350         i40e_stop_misc_vector(pf);
4351         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4352                 synchronize_irq(pf->msix_entries[0].vector);
4353                 free_irq(pf->msix_entries[0].vector, pf);
4354         }
4355
4356         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4357                       I40E_IWARP_IRQ_PILE_ID);
4358
4359         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4360         for (i = 0; i < pf->num_alloc_vsi; i++)
4361                 if (pf->vsi[i])
4362                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4363         i40e_reset_interrupt_capability(pf);
4364 }
4365
4366 /**
4367  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4368  * @vsi: the VSI being configured
4369  **/
4370 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4371 {
4372         int q_idx;
4373
4374         if (!vsi->netdev)
4375                 return;
4376
4377         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4378                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4379 }
4380
4381 /**
4382  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4383  * @vsi: the VSI being configured
4384  **/
4385 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4386 {
4387         int q_idx;
4388
4389         if (!vsi->netdev)
4390                 return;
4391
4392         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4393                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4394 }
4395
4396 /**
4397  * i40e_vsi_close - Shut down a VSI
4398  * @vsi: the vsi to be quelled
4399  **/
4400 static void i40e_vsi_close(struct i40e_vsi *vsi)
4401 {
4402         bool reset = false;
4403
4404         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4405                 i40e_down(vsi);
4406         i40e_vsi_free_irq(vsi);
4407         i40e_vsi_free_tx_resources(vsi);
4408         i40e_vsi_free_rx_resources(vsi);
4409         vsi->current_netdev_flags = 0;
4410         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4411                 reset = true;
4412         i40e_notify_client_of_netdev_close(vsi, reset);
4413 }
4414
4415 /**
4416  * i40e_quiesce_vsi - Pause a given VSI
4417  * @vsi: the VSI being paused
4418  **/
4419 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4420 {
4421         if (test_bit(__I40E_DOWN, &vsi->state))
4422                 return;
4423
4424         /* No need to disable FCoE VSI when Tx suspended */
4425         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4426             vsi->type == I40E_VSI_FCOE) {
4427                 dev_dbg(&vsi->back->pdev->dev,
4428                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4429                 return;
4430         }
4431
4432         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4433         if (vsi->netdev && netif_running(vsi->netdev))
4434                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4435         else
4436                 i40e_vsi_close(vsi);
4437 }
4438
4439 /**
4440  * i40e_unquiesce_vsi - Resume a given VSI
4441  * @vsi: the VSI being resumed
4442  **/
4443 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4444 {
4445         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4446                 return;
4447
4448         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4449         if (vsi->netdev && netif_running(vsi->netdev))
4450                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4451         else
4452                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4453 }
4454
4455 /**
4456  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4457  * @pf: the PF
4458  **/
4459 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4460 {
4461         int v;
4462
4463         for (v = 0; v < pf->num_alloc_vsi; v++) {
4464                 if (pf->vsi[v])
4465                         i40e_quiesce_vsi(pf->vsi[v]);
4466         }
4467 }
4468
4469 /**
4470  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4471  * @pf: the PF
4472  **/
4473 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4474 {
4475         int v;
4476
4477         for (v = 0; v < pf->num_alloc_vsi; v++) {
4478                 if (pf->vsi[v])
4479                         i40e_unquiesce_vsi(pf->vsi[v]);
4480         }
4481 }
4482
4483 #ifdef CONFIG_I40E_DCB
4484 /**
4485  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4486  * @vsi: the VSI being configured
4487  *
4488  * This function waits for the given VSI's queues to be disabled.
4489  **/
4490 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4491 {
4492         struct i40e_pf *pf = vsi->back;
4493         int i, pf_q, ret;
4494
4495         pf_q = vsi->base_queue;
4496         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4497                 /* Check and wait for the disable status of the queue */
4498                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4499                 if (ret) {
4500                         dev_info(&pf->pdev->dev,
4501                                  "VSI seid %d Tx ring %d disable timeout\n",
4502                                  vsi->seid, pf_q);
4503                         return ret;
4504                 }
4505         }
4506
4507         pf_q = vsi->base_queue;
4508         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4509                 /* Check and wait for the disable status of the queue */
4510                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4511                 if (ret) {
4512                         dev_info(&pf->pdev->dev,
4513                                  "VSI seid %d Rx ring %d disable timeout\n",
4514                                  vsi->seid, pf_q);
4515                         return ret;
4516                 }
4517         }
4518
4519         return 0;
4520 }
4521
4522 /**
4523  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4524  * @pf: the PF
4525  *
4526  * This function waits for the queues to be in disabled state for all the
4527  * VSIs that are managed by this PF.
4528  **/
4529 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4530 {
4531         int v, ret = 0;
4532
4533         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4534                 /* No need to wait for FCoE VSI queues */
4535                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4536                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4537                         if (ret)
4538                                 break;
4539                 }
4540         }
4541
4542         return ret;
4543 }
4544
4545 #endif
4546
4547 /**
4548  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4549  * @q_idx: TX queue number
4550  * @vsi: Pointer to VSI struct
4551  *
4552  * This function checks specified queue for given VSI. Detects hung condition.
4553  * Sets hung bit since it is two step process. Before next run of service task
4554  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4555  * hung condition remain unchanged and during subsequent run, this function
4556  * issues SW interrupt to recover from hung condition.
4557  **/
4558 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4559 {
4560         struct i40e_ring *tx_ring = NULL;
4561         struct i40e_pf  *pf;
4562         u32 head, val, tx_pending_hw;
4563         int i;
4564
4565         pf = vsi->back;
4566
4567         /* now that we have an index, find the tx_ring struct */
4568         for (i = 0; i < vsi->num_queue_pairs; i++) {
4569                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4570                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4571                                 tx_ring = vsi->tx_rings[i];
4572                                 break;
4573                         }
4574                 }
4575         }
4576
4577         if (!tx_ring)
4578                 return;
4579
4580         /* Read interrupt register */
4581         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4582                 val = rd32(&pf->hw,
4583                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4584                                                tx_ring->vsi->base_vector - 1));
4585         else
4586                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4587
4588         head = i40e_get_head(tx_ring);
4589
4590         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4591
4592         /* HW is done executing descriptors, updated HEAD write back,
4593          * but SW hasn't processed those descriptors. If interrupt is
4594          * not generated from this point ON, it could result into
4595          * dev_watchdog detecting timeout on those netdev_queue,
4596          * hence proactively trigger SW interrupt.
4597          */
4598         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4599                 /* NAPI Poll didn't run and clear since it was set */
4600                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4601                                        &tx_ring->q_vector->hung_detected)) {
4602                         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",
4603                                     vsi->seid, q_idx, tx_pending_hw,
4604                                     tx_ring->next_to_clean, head,
4605                                     tx_ring->next_to_use,
4606                                     readl(tx_ring->tail));
4607                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4608                                     vsi->seid, q_idx, val);
4609                         i40e_force_wb(vsi, tx_ring->q_vector);
4610                 } else {
4611                         /* First Chance - detected possible hung */
4612                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4613                                 &tx_ring->q_vector->hung_detected);
4614                 }
4615         }
4616
4617         /* This is the case where we have interrupts missing,
4618          * so the tx_pending in HW will most likely be 0, but we
4619          * will have tx_pending in SW since the WB happened but the
4620          * interrupt got lost.
4621          */
4622         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4623             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4624                 if (napi_reschedule(&tx_ring->q_vector->napi))
4625                         tx_ring->tx_stats.tx_lost_interrupt++;
4626         }
4627 }
4628
4629 /**
4630  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4631  * @pf:  pointer to PF struct
4632  *
4633  * LAN VSI has netdev and netdev has TX queues. This function is to check
4634  * each of those TX queues if they are hung, trigger recovery by issuing
4635  * SW interrupt.
4636  **/
4637 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4638 {
4639         struct net_device *netdev;
4640         struct i40e_vsi *vsi;
4641         int i;
4642
4643         /* Only for LAN VSI */
4644         vsi = pf->vsi[pf->lan_vsi];
4645
4646         if (!vsi)
4647                 return;
4648
4649         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4650         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4651             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4652                 return;
4653
4654         /* Make sure type is MAIN VSI */
4655         if (vsi->type != I40E_VSI_MAIN)
4656                 return;
4657
4658         netdev = vsi->netdev;
4659         if (!netdev)
4660                 return;
4661
4662         /* Bail out if netif_carrier is not OK */
4663         if (!netif_carrier_ok(netdev))
4664                 return;
4665
4666         /* Go thru' TX queues for netdev */
4667         for (i = 0; i < netdev->num_tx_queues; i++) {
4668                 struct netdev_queue *q;
4669
4670                 q = netdev_get_tx_queue(netdev, i);
4671                 if (q)
4672                         i40e_detect_recover_hung_queue(i, vsi);
4673         }
4674 }
4675
4676 /**
4677  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4678  * @pf: pointer to PF
4679  *
4680  * Get TC map for ISCSI PF type that will include iSCSI TC
4681  * and LAN TC.
4682  **/
4683 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4684 {
4685         struct i40e_dcb_app_priority_table app;
4686         struct i40e_hw *hw = &pf->hw;
4687         u8 enabled_tc = 1; /* TC0 is always enabled */
4688         u8 tc, i;
4689         /* Get the iSCSI APP TLV */
4690         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4691
4692         for (i = 0; i < dcbcfg->numapps; i++) {
4693                 app = dcbcfg->app[i];
4694                 if (app.selector == I40E_APP_SEL_TCPIP &&
4695                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4696                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4697                         enabled_tc |= BIT(tc);
4698                         break;
4699                 }
4700         }
4701
4702         return enabled_tc;
4703 }
4704
4705 /**
4706  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4707  * @dcbcfg: the corresponding DCBx configuration structure
4708  *
4709  * Return the number of TCs from given DCBx configuration
4710  **/
4711 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4712 {
4713         int i, tc_unused = 0;
4714         u8 num_tc = 0;
4715         u8 ret = 0;
4716
4717         /* Scan the ETS Config Priority Table to find
4718          * traffic class enabled for a given priority
4719          * and create a bitmask of enabled TCs
4720          */
4721         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4722                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4723
4724         /* Now scan the bitmask to check for
4725          * contiguous TCs starting with TC0
4726          */
4727         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4728                 if (num_tc & BIT(i)) {
4729                         if (!tc_unused) {
4730                                 ret++;
4731                         } else {
4732                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4733                                 return 1;
4734                         }
4735                 } else {
4736                         tc_unused = 1;
4737                 }
4738         }
4739
4740         /* There is always at least TC0 */
4741         if (!ret)
4742                 ret = 1;
4743
4744         return ret;
4745 }
4746
4747 /**
4748  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4749  * @dcbcfg: the corresponding DCBx configuration structure
4750  *
4751  * Query the current DCB configuration and return the number of
4752  * traffic classes enabled from the given DCBX config
4753  **/
4754 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4755 {
4756         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4757         u8 enabled_tc = 1;
4758         u8 i;
4759
4760         for (i = 0; i < num_tc; i++)
4761                 enabled_tc |= BIT(i);
4762
4763         return enabled_tc;
4764 }
4765
4766 /**
4767  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4768  * @pf: PF being queried
4769  *
4770  * Return number of traffic classes enabled for the given PF
4771  **/
4772 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4773 {
4774         struct i40e_hw *hw = &pf->hw;
4775         u8 i, enabled_tc = 1;
4776         u8 num_tc = 0;
4777         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4778
4779         /* If DCB is not enabled then always in single TC */
4780         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4781                 return 1;
4782
4783         /* SFP mode will be enabled for all TCs on port */
4784         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4785                 return i40e_dcb_get_num_tc(dcbcfg);
4786
4787         /* MFP mode return count of enabled TCs for this PF */
4788         if (pf->hw.func_caps.iscsi)
4789                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4790         else
4791                 return 1; /* Only TC0 */
4792
4793         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4794                 if (enabled_tc & BIT(i))
4795                         num_tc++;
4796         }
4797         return num_tc;
4798 }
4799
4800 /**
4801  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4802  * @pf: PF being queried
4803  *
4804  * Return a bitmap for enabled traffic classes for this PF.
4805  **/
4806 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4807 {
4808         /* If DCB is not enabled for this PF then just return default TC */
4809         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4810                 return I40E_DEFAULT_TRAFFIC_CLASS;
4811
4812         /* SFP mode we want PF to be enabled for all TCs */
4813         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4814                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4815
4816         /* MFP enabled and iSCSI PF type */
4817         if (pf->hw.func_caps.iscsi)
4818                 return i40e_get_iscsi_tc_map(pf);
4819         else
4820                 return I40E_DEFAULT_TRAFFIC_CLASS;
4821 }
4822
4823 /**
4824  * i40e_vsi_get_bw_info - Query VSI BW Information
4825  * @vsi: the VSI being queried
4826  *
4827  * Returns 0 on success, negative value on failure
4828  **/
4829 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4830 {
4831         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4832         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4833         struct i40e_pf *pf = vsi->back;
4834         struct i40e_hw *hw = &pf->hw;
4835         i40e_status ret;
4836         u32 tc_bw_max;
4837         int i;
4838
4839         /* Get the VSI level BW configuration */
4840         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4841         if (ret) {
4842                 dev_info(&pf->pdev->dev,
4843                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4844                          i40e_stat_str(&pf->hw, ret),
4845                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4846                 return -EINVAL;
4847         }
4848
4849         /* Get the VSI level BW configuration per TC */
4850         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4851                                                NULL);
4852         if (ret) {
4853                 dev_info(&pf->pdev->dev,
4854                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4855                          i40e_stat_str(&pf->hw, ret),
4856                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4857                 return -EINVAL;
4858         }
4859
4860         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4861                 dev_info(&pf->pdev->dev,
4862                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4863                          bw_config.tc_valid_bits,
4864                          bw_ets_config.tc_valid_bits);
4865                 /* Still continuing */
4866         }
4867
4868         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4869         vsi->bw_max_quanta = bw_config.max_bw;
4870         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4871                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4872         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4873                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4874                 vsi->bw_ets_limit_credits[i] =
4875                                         le16_to_cpu(bw_ets_config.credits[i]);
4876                 /* 3 bits out of 4 for each TC */
4877                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4878         }
4879
4880         return 0;
4881 }
4882
4883 /**
4884  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4885  * @vsi: the VSI being configured
4886  * @enabled_tc: TC bitmap
4887  * @bw_credits: BW shared credits per TC
4888  *
4889  * Returns 0 on success, negative value on failure
4890  **/
4891 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4892                                        u8 *bw_share)
4893 {
4894         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4895         i40e_status ret;
4896         int i;
4897
4898         bw_data.tc_valid_bits = enabled_tc;
4899         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4900                 bw_data.tc_bw_credits[i] = bw_share[i];
4901
4902         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4903                                        NULL);
4904         if (ret) {
4905                 dev_info(&vsi->back->pdev->dev,
4906                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4907                          vsi->back->hw.aq.asq_last_status);
4908                 return -EINVAL;
4909         }
4910
4911         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4912                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4913
4914         return 0;
4915 }
4916
4917 /**
4918  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4919  * @vsi: the VSI being configured
4920  * @enabled_tc: TC map to be enabled
4921  *
4922  **/
4923 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4924 {
4925         struct net_device *netdev = vsi->netdev;
4926         struct i40e_pf *pf = vsi->back;
4927         struct i40e_hw *hw = &pf->hw;
4928         u8 netdev_tc = 0;
4929         int i;
4930         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4931
4932         if (!netdev)
4933                 return;
4934
4935         if (!enabled_tc) {
4936                 netdev_reset_tc(netdev);
4937                 return;
4938         }
4939
4940         /* Set up actual enabled TCs on the VSI */
4941         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4942                 return;
4943
4944         /* set per TC queues for the VSI */
4945         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4946                 /* Only set TC queues for enabled tcs
4947                  *
4948                  * e.g. For a VSI that has TC0 and TC3 enabled the
4949                  * enabled_tc bitmap would be 0x00001001; the driver
4950                  * will set the numtc for netdev as 2 that will be
4951                  * referenced by the netdev layer as TC 0 and 1.
4952                  */
4953                 if (vsi->tc_config.enabled_tc & BIT(i))
4954                         netdev_set_tc_queue(netdev,
4955                                         vsi->tc_config.tc_info[i].netdev_tc,
4956                                         vsi->tc_config.tc_info[i].qcount,
4957                                         vsi->tc_config.tc_info[i].qoffset);
4958         }
4959
4960         /* Assign UP2TC map for the VSI */
4961         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4962                 /* Get the actual TC# for the UP */
4963                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4964                 /* Get the mapped netdev TC# for the UP */
4965                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4966                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4967         }
4968 }
4969
4970 /**
4971  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4972  * @vsi: the VSI being configured
4973  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4974  **/
4975 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4976                                       struct i40e_vsi_context *ctxt)
4977 {
4978         /* copy just the sections touched not the entire info
4979          * since not all sections are valid as returned by
4980          * update vsi params
4981          */
4982         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4983         memcpy(&vsi->info.queue_mapping,
4984                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4985         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4986                sizeof(vsi->info.tc_mapping));
4987 }
4988
4989 /**
4990  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4991  * @vsi: VSI to be configured
4992  * @enabled_tc: TC bitmap
4993  *
4994  * This configures a particular VSI for TCs that are mapped to the
4995  * given TC bitmap. It uses default bandwidth share for TCs across
4996  * VSIs to configure TC for a particular VSI.
4997  *
4998  * NOTE:
4999  * It is expected that the VSI queues have been quisced before calling
5000  * this function.
5001  **/
5002 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5003 {
5004         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5005         struct i40e_vsi_context ctxt;
5006         int ret = 0;
5007         int i;
5008
5009         /* Check if enabled_tc is same as existing or new TCs */
5010         if (vsi->tc_config.enabled_tc == enabled_tc)
5011                 return ret;
5012
5013         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5014         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5015                 if (enabled_tc & BIT(i))
5016                         bw_share[i] = 1;
5017         }
5018
5019         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5020         if (ret) {
5021                 dev_info(&vsi->back->pdev->dev,
5022                          "Failed configuring TC map %d for VSI %d\n",
5023                          enabled_tc, vsi->seid);
5024                 goto out;
5025         }
5026
5027         /* Update Queue Pairs Mapping for currently enabled UPs */
5028         ctxt.seid = vsi->seid;
5029         ctxt.pf_num = vsi->back->hw.pf_id;
5030         ctxt.vf_num = 0;
5031         ctxt.uplink_seid = vsi->uplink_seid;
5032         ctxt.info = vsi->info;
5033         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5034
5035         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5036                 ctxt.info.valid_sections |=
5037                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5038                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5039         }
5040
5041         /* Update the VSI after updating the VSI queue-mapping information */
5042         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
5043         if (ret) {
5044                 dev_info(&vsi->back->pdev->dev,
5045                          "Update vsi tc config failed, err %s aq_err %s\n",
5046                          i40e_stat_str(&vsi->back->hw, ret),
5047                          i40e_aq_str(&vsi->back->hw,
5048                                      vsi->back->hw.aq.asq_last_status));
5049                 goto out;
5050         }
5051         /* update the local VSI info with updated queue map */
5052         i40e_vsi_update_queue_map(vsi, &ctxt);
5053         vsi->info.valid_sections = 0;
5054
5055         /* Update current VSI BW information */
5056         ret = i40e_vsi_get_bw_info(vsi);
5057         if (ret) {
5058                 dev_info(&vsi->back->pdev->dev,
5059                          "Failed updating vsi bw info, err %s aq_err %s\n",
5060                          i40e_stat_str(&vsi->back->hw, ret),
5061                          i40e_aq_str(&vsi->back->hw,
5062                                      vsi->back->hw.aq.asq_last_status));
5063                 goto out;
5064         }
5065
5066         /* Update the netdev TC setup */
5067         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5068 out:
5069         return ret;
5070 }
5071
5072 /**
5073  * i40e_veb_config_tc - Configure TCs for given VEB
5074  * @veb: given VEB
5075  * @enabled_tc: TC bitmap
5076  *
5077  * Configures given TC bitmap for VEB (switching) element
5078  **/
5079 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
5080 {
5081         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
5082         struct i40e_pf *pf = veb->pf;
5083         int ret = 0;
5084         int i;
5085
5086         /* No TCs or already enabled TCs just return */
5087         if (!enabled_tc || veb->enabled_tc == enabled_tc)
5088                 return ret;
5089
5090         bw_data.tc_valid_bits = enabled_tc;
5091         /* bw_data.absolute_credits is not set (relative) */
5092
5093         /* Enable ETS TCs with equal BW Share for now */
5094         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5095                 if (enabled_tc & BIT(i))
5096                         bw_data.tc_bw_share_credits[i] = 1;
5097         }
5098
5099         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
5100                                                    &bw_data, NULL);
5101         if (ret) {
5102                 dev_info(&pf->pdev->dev,
5103                          "VEB bw config failed, err %s aq_err %s\n",
5104                          i40e_stat_str(&pf->hw, ret),
5105                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5106                 goto out;
5107         }
5108
5109         /* Update the BW information */
5110         ret = i40e_veb_get_bw_info(veb);
5111         if (ret) {
5112                 dev_info(&pf->pdev->dev,
5113                          "Failed getting veb bw config, err %s aq_err %s\n",
5114                          i40e_stat_str(&pf->hw, ret),
5115                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5116         }
5117
5118 out:
5119         return ret;
5120 }
5121
5122 #ifdef CONFIG_I40E_DCB
5123 /**
5124  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
5125  * @pf: PF struct
5126  *
5127  * Reconfigure VEB/VSIs on a given PF; it is assumed that
5128  * the caller would've quiesce all the VSIs before calling
5129  * this function
5130  **/
5131 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
5132 {
5133         u8 tc_map = 0;
5134         int ret;
5135         u8 v;
5136
5137         /* Enable the TCs available on PF to all VEBs */
5138         tc_map = i40e_pf_get_tc_map(pf);
5139         for (v = 0; v < I40E_MAX_VEB; v++) {
5140                 if (!pf->veb[v])
5141                         continue;
5142                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5143                 if (ret) {
5144                         dev_info(&pf->pdev->dev,
5145                                  "Failed configuring TC for VEB seid=%d\n",
5146                                  pf->veb[v]->seid);
5147                         /* Will try to configure as many components */
5148                 }
5149         }
5150
5151         /* Update each VSI */
5152         for (v = 0; v < pf->num_alloc_vsi; v++) {
5153                 if (!pf->vsi[v])
5154                         continue;
5155
5156                 /* - Enable all TCs for the LAN VSI
5157 #ifdef I40E_FCOE
5158                  * - For FCoE VSI only enable the TC configured
5159                  *   as per the APP TLV
5160 #endif
5161                  * - For all others keep them at TC0 for now
5162                  */
5163                 if (v == pf->lan_vsi)
5164                         tc_map = i40e_pf_get_tc_map(pf);
5165                 else
5166                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
5167 #ifdef I40E_FCOE
5168                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5169                         tc_map = i40e_get_fcoe_tc_map(pf);
5170 #endif /* #ifdef I40E_FCOE */
5171
5172                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5173                 if (ret) {
5174                         dev_info(&pf->pdev->dev,
5175                                  "Failed configuring TC for VSI seid=%d\n",
5176                                  pf->vsi[v]->seid);
5177                         /* Will try to configure as many components */
5178                 } else {
5179                         /* Re-configure VSI vectors based on updated TC map */
5180                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5181                         if (pf->vsi[v]->netdev)
5182                                 i40e_dcbnl_set_all(pf->vsi[v]);
5183                 }
5184         }
5185 }
5186
5187 /**
5188  * i40e_resume_port_tx - Resume port Tx
5189  * @pf: PF struct
5190  *
5191  * Resume a port's Tx and issue a PF reset in case of failure to
5192  * resume.
5193  **/
5194 static int i40e_resume_port_tx(struct i40e_pf *pf)
5195 {
5196         struct i40e_hw *hw = &pf->hw;
5197         int ret;
5198
5199         ret = i40e_aq_resume_port_tx(hw, NULL);
5200         if (ret) {
5201                 dev_info(&pf->pdev->dev,
5202                          "Resume Port Tx failed, err %s aq_err %s\n",
5203                           i40e_stat_str(&pf->hw, ret),
5204                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5205                 /* Schedule PF reset to recover */
5206                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5207                 i40e_service_event_schedule(pf);
5208         }
5209
5210         return ret;
5211 }
5212
5213 /**
5214  * i40e_init_pf_dcb - Initialize DCB configuration
5215  * @pf: PF being configured
5216  *
5217  * Query the current DCB configuration and cache it
5218  * in the hardware structure
5219  **/
5220 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5221 {
5222         struct i40e_hw *hw = &pf->hw;
5223         int err = 0;
5224
5225         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5226         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5227                 goto out;
5228
5229         /* Get the initial DCB configuration */
5230         err = i40e_init_dcb(hw);
5231         if (!err) {
5232                 /* Device/Function is not DCBX capable */
5233                 if ((!hw->func_caps.dcb) ||
5234                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5235                         dev_info(&pf->pdev->dev,
5236                                  "DCBX offload is not supported or is disabled for this PF.\n");
5237
5238                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5239                                 goto out;
5240
5241                 } else {
5242                         /* When status is not DISABLED then DCBX in FW */
5243                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5244                                        DCB_CAP_DCBX_VER_IEEE;
5245
5246                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5247                         /* Enable DCB tagging only when more than one TC
5248                          * or explicitly disable if only one TC
5249                          */
5250                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5251                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5252                         else
5253                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5254                         dev_dbg(&pf->pdev->dev,
5255                                 "DCBX offload is supported for this PF.\n");
5256                 }
5257         } else {
5258                 dev_info(&pf->pdev->dev,
5259                          "Query for DCB configuration failed, err %s aq_err %s\n",
5260                          i40e_stat_str(&pf->hw, err),
5261                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5262         }
5263
5264 out:
5265         return err;
5266 }
5267 #endif /* CONFIG_I40E_DCB */
5268 #define SPEED_SIZE 14
5269 #define FC_SIZE 8
5270 /**
5271  * i40e_print_link_message - print link up or down
5272  * @vsi: the VSI for which link needs a message
5273  */
5274 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5275 {
5276         enum i40e_aq_link_speed new_speed;
5277         char *speed = "Unknown";
5278         char *fc = "Unknown";
5279
5280         new_speed = vsi->back->hw.phy.link_info.link_speed;
5281
5282         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
5283                 return;
5284         vsi->current_isup = isup;
5285         vsi->current_speed = new_speed;
5286         if (!isup) {
5287                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5288                 return;
5289         }
5290
5291         /* Warn user if link speed on NPAR enabled partition is not at
5292          * least 10GB
5293          */
5294         if (vsi->back->hw.func_caps.npar_enable &&
5295             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5296              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5297                 netdev_warn(vsi->netdev,
5298                             "The partition detected link speed that is less than 10Gbps\n");
5299
5300         switch (vsi->back->hw.phy.link_info.link_speed) {
5301         case I40E_LINK_SPEED_40GB:
5302                 speed = "40 G";
5303                 break;
5304         case I40E_LINK_SPEED_20GB:
5305                 speed = "20 G";
5306                 break;
5307         case I40E_LINK_SPEED_25GB:
5308                 speed = "25 G";
5309                 break;
5310         case I40E_LINK_SPEED_10GB:
5311                 speed = "10 G";
5312                 break;
5313         case I40E_LINK_SPEED_1GB:
5314                 speed = "1000 M";
5315                 break;
5316         case I40E_LINK_SPEED_100MB:
5317                 speed = "100 M";
5318                 break;
5319         default:
5320                 break;
5321         }
5322
5323         switch (vsi->back->hw.fc.current_mode) {
5324         case I40E_FC_FULL:
5325                 fc = "RX/TX";
5326                 break;
5327         case I40E_FC_TX_PAUSE:
5328                 fc = "TX";
5329                 break;
5330         case I40E_FC_RX_PAUSE:
5331                 fc = "RX";
5332                 break;
5333         default:
5334                 fc = "None";
5335                 break;
5336         }
5337
5338         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5339                     speed, fc);
5340 }
5341
5342 /**
5343  * i40e_up_complete - Finish the last steps of bringing up a connection
5344  * @vsi: the VSI being configured
5345  **/
5346 static int i40e_up_complete(struct i40e_vsi *vsi)
5347 {
5348         struct i40e_pf *pf = vsi->back;
5349         int err;
5350
5351         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5352                 i40e_vsi_configure_msix(vsi);
5353         else
5354                 i40e_configure_msi_and_legacy(vsi);
5355
5356         /* start rings */
5357         err = i40e_vsi_start_rings(vsi);
5358         if (err)
5359                 return err;
5360
5361         clear_bit(__I40E_DOWN, &vsi->state);
5362         i40e_napi_enable_all(vsi);
5363         i40e_vsi_enable_irq(vsi);
5364
5365         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5366             (vsi->netdev)) {
5367                 i40e_print_link_message(vsi, true);
5368                 netif_tx_start_all_queues(vsi->netdev);
5369                 netif_carrier_on(vsi->netdev);
5370         } else if (vsi->netdev) {
5371                 i40e_print_link_message(vsi, false);
5372                 /* need to check for qualified module here*/
5373                 if ((pf->hw.phy.link_info.link_info &
5374                         I40E_AQ_MEDIA_AVAILABLE) &&
5375                     (!(pf->hw.phy.link_info.an_info &
5376                         I40E_AQ_QUALIFIED_MODULE)))
5377                         netdev_err(vsi->netdev,
5378                                    "the driver failed to link because an unqualified module was detected.");
5379         }
5380
5381         /* replay FDIR SB filters */
5382         if (vsi->type == I40E_VSI_FDIR) {
5383                 /* reset fd counters */
5384                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5385                 if (pf->fd_tcp_rule > 0) {
5386                         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5387                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5388                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5389                         pf->fd_tcp_rule = 0;
5390                 }
5391                 i40e_fdir_filter_restore(vsi);
5392         }
5393
5394         /* On the next run of the service_task, notify any clients of the new
5395          * opened netdev
5396          */
5397         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5398         i40e_service_event_schedule(pf);
5399
5400         return 0;
5401 }
5402
5403 /**
5404  * i40e_vsi_reinit_locked - Reset the VSI
5405  * @vsi: the VSI being configured
5406  *
5407  * Rebuild the ring structs after some configuration
5408  * has changed, e.g. MTU size.
5409  **/
5410 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5411 {
5412         struct i40e_pf *pf = vsi->back;
5413
5414         WARN_ON(in_interrupt());
5415         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5416                 usleep_range(1000, 2000);
5417         i40e_down(vsi);
5418
5419         i40e_up(vsi);
5420         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5421 }
5422
5423 /**
5424  * i40e_up - Bring the connection back up after being down
5425  * @vsi: the VSI being configured
5426  **/
5427 int i40e_up(struct i40e_vsi *vsi)
5428 {
5429         int err;
5430
5431         err = i40e_vsi_configure(vsi);
5432         if (!err)
5433                 err = i40e_up_complete(vsi);
5434
5435         return err;
5436 }
5437
5438 /**
5439  * i40e_down - Shutdown the connection processing
5440  * @vsi: the VSI being stopped
5441  **/
5442 void i40e_down(struct i40e_vsi *vsi)
5443 {
5444         int i;
5445
5446         /* It is assumed that the caller of this function
5447          * sets the vsi->state __I40E_DOWN bit.
5448          */
5449         if (vsi->netdev) {
5450                 netif_carrier_off(vsi->netdev);
5451                 netif_tx_disable(vsi->netdev);
5452         }
5453         i40e_vsi_disable_irq(vsi);
5454         i40e_vsi_stop_rings(vsi);
5455         i40e_napi_disable_all(vsi);
5456
5457         for (i = 0; i < vsi->num_queue_pairs; i++) {
5458                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5459                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5460         }
5461
5462         i40e_notify_client_of_netdev_close(vsi, false);
5463
5464 }
5465
5466 /**
5467  * i40e_setup_tc - configure multiple traffic classes
5468  * @netdev: net device to configure
5469  * @tc: number of traffic classes to enable
5470  **/
5471 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5472 {
5473         struct i40e_netdev_priv *np = netdev_priv(netdev);
5474         struct i40e_vsi *vsi = np->vsi;
5475         struct i40e_pf *pf = vsi->back;
5476         u8 enabled_tc = 0;
5477         int ret = -EINVAL;
5478         int i;
5479
5480         /* Check if DCB enabled to continue */
5481         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5482                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5483                 goto exit;
5484         }
5485
5486         /* Check if MFP enabled */
5487         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5488                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5489                 goto exit;
5490         }
5491
5492         /* Check whether tc count is within enabled limit */
5493         if (tc > i40e_pf_get_num_tc(pf)) {
5494                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5495                 goto exit;
5496         }
5497
5498         /* Generate TC map for number of tc requested */
5499         for (i = 0; i < tc; i++)
5500                 enabled_tc |= BIT(i);
5501
5502         /* Requesting same TC configuration as already enabled */
5503         if (enabled_tc == vsi->tc_config.enabled_tc)
5504                 return 0;
5505
5506         /* Quiesce VSI queues */
5507         i40e_quiesce_vsi(vsi);
5508
5509         /* Configure VSI for enabled TCs */
5510         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5511         if (ret) {
5512                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5513                             vsi->seid);
5514                 goto exit;
5515         }
5516
5517         /* Unquiesce VSI */
5518         i40e_unquiesce_vsi(vsi);
5519
5520 exit:
5521         return ret;
5522 }
5523
5524 #ifdef I40E_FCOE
5525 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5526                     struct tc_to_netdev *tc)
5527 #else
5528 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5529                            struct tc_to_netdev *tc)
5530 #endif
5531 {
5532         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5533                 return -EINVAL;
5534         return i40e_setup_tc(netdev, tc->tc);
5535 }
5536
5537 /**
5538  * i40e_open - Called when a network interface is made active
5539  * @netdev: network interface device structure
5540  *
5541  * The open entry point is called when a network interface is made
5542  * active by the system (IFF_UP).  At this point all resources needed
5543  * for transmit and receive operations are allocated, the interrupt
5544  * handler is registered with the OS, the netdev watchdog subtask is
5545  * enabled, and the stack is notified that the interface is ready.
5546  *
5547  * Returns 0 on success, negative value on failure
5548  **/
5549 int i40e_open(struct net_device *netdev)
5550 {
5551         struct i40e_netdev_priv *np = netdev_priv(netdev);
5552         struct i40e_vsi *vsi = np->vsi;
5553         struct i40e_pf *pf = vsi->back;
5554         int err;
5555
5556         /* disallow open during test or if eeprom is broken */
5557         if (test_bit(__I40E_TESTING, &pf->state) ||
5558             test_bit(__I40E_BAD_EEPROM, &pf->state))
5559                 return -EBUSY;
5560
5561         netif_carrier_off(netdev);
5562
5563         err = i40e_vsi_open(vsi);
5564         if (err)
5565                 return err;
5566
5567         /* configure global TSO hardware offload settings */
5568         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5569                                                        TCP_FLAG_FIN) >> 16);
5570         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5571                                                        TCP_FLAG_FIN |
5572                                                        TCP_FLAG_CWR) >> 16);
5573         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5574
5575         udp_tunnel_get_rx_info(netdev);
5576
5577         return 0;
5578 }
5579
5580 /**
5581  * i40e_vsi_open -
5582  * @vsi: the VSI to open
5583  *
5584  * Finish initialization of the VSI.
5585  *
5586  * Returns 0 on success, negative value on failure
5587  **/
5588 int i40e_vsi_open(struct i40e_vsi *vsi)
5589 {
5590         struct i40e_pf *pf = vsi->back;
5591         char int_name[I40E_INT_NAME_STR_LEN];
5592         int err;
5593
5594         /* allocate descriptors */
5595         err = i40e_vsi_setup_tx_resources(vsi);
5596         if (err)
5597                 goto err_setup_tx;
5598         err = i40e_vsi_setup_rx_resources(vsi);
5599         if (err)
5600                 goto err_setup_rx;
5601
5602         err = i40e_vsi_configure(vsi);
5603         if (err)
5604                 goto err_setup_rx;
5605
5606         if (vsi->netdev) {
5607                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5608                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5609                 err = i40e_vsi_request_irq(vsi, int_name);
5610                 if (err)
5611                         goto err_setup_rx;
5612
5613                 /* Notify the stack of the actual queue counts. */
5614                 err = netif_set_real_num_tx_queues(vsi->netdev,
5615                                                    vsi->num_queue_pairs);
5616                 if (err)
5617                         goto err_set_queues;
5618
5619                 err = netif_set_real_num_rx_queues(vsi->netdev,
5620                                                    vsi->num_queue_pairs);
5621                 if (err)
5622                         goto err_set_queues;
5623
5624         } else if (vsi->type == I40E_VSI_FDIR) {
5625                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5626                          dev_driver_string(&pf->pdev->dev),
5627                          dev_name(&pf->pdev->dev));
5628                 err = i40e_vsi_request_irq(vsi, int_name);
5629
5630         } else {
5631                 err = -EINVAL;
5632                 goto err_setup_rx;
5633         }
5634
5635         err = i40e_up_complete(vsi);
5636         if (err)
5637                 goto err_up_complete;
5638
5639         return 0;
5640
5641 err_up_complete:
5642         i40e_down(vsi);
5643 err_set_queues:
5644         i40e_vsi_free_irq(vsi);
5645 err_setup_rx:
5646         i40e_vsi_free_rx_resources(vsi);
5647 err_setup_tx:
5648         i40e_vsi_free_tx_resources(vsi);
5649         if (vsi == pf->vsi[pf->lan_vsi])
5650                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5651
5652         return err;
5653 }
5654
5655 /**
5656  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5657  * @pf: Pointer to PF
5658  *
5659  * This function destroys the hlist where all the Flow Director
5660  * filters were saved.
5661  **/
5662 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5663 {
5664         struct i40e_fdir_filter *filter;
5665         struct hlist_node *node2;
5666
5667         hlist_for_each_entry_safe(filter, node2,
5668                                   &pf->fdir_filter_list, fdir_node) {
5669                 hlist_del(&filter->fdir_node);
5670                 kfree(filter);
5671         }
5672         pf->fdir_pf_active_filters = 0;
5673 }
5674
5675 /**
5676  * i40e_close - Disables a network interface
5677  * @netdev: network interface device structure
5678  *
5679  * The close entry point is called when an interface is de-activated
5680  * by the OS.  The hardware is still under the driver's control, but
5681  * this netdev interface is disabled.
5682  *
5683  * Returns 0, this is not allowed to fail
5684  **/
5685 int i40e_close(struct net_device *netdev)
5686 {
5687         struct i40e_netdev_priv *np = netdev_priv(netdev);
5688         struct i40e_vsi *vsi = np->vsi;
5689
5690         i40e_vsi_close(vsi);
5691
5692         return 0;
5693 }
5694
5695 /**
5696  * i40e_do_reset - Start a PF or Core Reset sequence
5697  * @pf: board private structure
5698  * @reset_flags: which reset is requested
5699  *
5700  * The essential difference in resets is that the PF Reset
5701  * doesn't clear the packet buffers, doesn't reset the PE
5702  * firmware, and doesn't bother the other PFs on the chip.
5703  **/
5704 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5705 {
5706         u32 val;
5707
5708         WARN_ON(in_interrupt());
5709
5710
5711         /* do the biggest reset indicated */
5712         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5713
5714                 /* Request a Global Reset
5715                  *
5716                  * This will start the chip's countdown to the actual full
5717                  * chip reset event, and a warning interrupt to be sent
5718                  * to all PFs, including the requestor.  Our handler
5719                  * for the warning interrupt will deal with the shutdown
5720                  * and recovery of the switch setup.
5721                  */
5722                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5723                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5724                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5725                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5726
5727         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5728
5729                 /* Request a Core Reset
5730                  *
5731                  * Same as Global Reset, except does *not* include the MAC/PHY
5732                  */
5733                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5734                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5735                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5736                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5737                 i40e_flush(&pf->hw);
5738
5739         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5740
5741                 /* Request a PF Reset
5742                  *
5743                  * Resets only the PF-specific registers
5744                  *
5745                  * This goes directly to the tear-down and rebuild of
5746                  * the switch, since we need to do all the recovery as
5747                  * for the Core Reset.
5748                  */
5749                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5750                 i40e_handle_reset_warning(pf);
5751
5752         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5753                 int v;
5754
5755                 /* Find the VSI(s) that requested a re-init */
5756                 dev_info(&pf->pdev->dev,
5757                          "VSI reinit requested\n");
5758                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5759                         struct i40e_vsi *vsi = pf->vsi[v];
5760
5761                         if (vsi != NULL &&
5762                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5763                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5764                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5765                         }
5766                 }
5767         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5768                 int v;
5769
5770                 /* Find the VSI(s) that needs to be brought down */
5771                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5772                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5773                         struct i40e_vsi *vsi = pf->vsi[v];
5774
5775                         if (vsi != NULL &&
5776                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5777                                 set_bit(__I40E_DOWN, &vsi->state);
5778                                 i40e_down(vsi);
5779                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5780                         }
5781                 }
5782         } else {
5783                 dev_info(&pf->pdev->dev,
5784                          "bad reset request 0x%08x\n", reset_flags);
5785         }
5786 }
5787
5788 #ifdef CONFIG_I40E_DCB
5789 /**
5790  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5791  * @pf: board private structure
5792  * @old_cfg: current DCB config
5793  * @new_cfg: new DCB config
5794  **/
5795 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5796                             struct i40e_dcbx_config *old_cfg,
5797                             struct i40e_dcbx_config *new_cfg)
5798 {
5799         bool need_reconfig = false;
5800
5801         /* Check if ETS configuration has changed */
5802         if (memcmp(&new_cfg->etscfg,
5803                    &old_cfg->etscfg,
5804                    sizeof(new_cfg->etscfg))) {
5805                 /* If Priority Table has changed reconfig is needed */
5806                 if (memcmp(&new_cfg->etscfg.prioritytable,
5807                            &old_cfg->etscfg.prioritytable,
5808                            sizeof(new_cfg->etscfg.prioritytable))) {
5809                         need_reconfig = true;
5810                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5811                 }
5812
5813                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5814                            &old_cfg->etscfg.tcbwtable,
5815                            sizeof(new_cfg->etscfg.tcbwtable)))
5816                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5817
5818                 if (memcmp(&new_cfg->etscfg.tsatable,
5819                            &old_cfg->etscfg.tsatable,
5820                            sizeof(new_cfg->etscfg.tsatable)))
5821                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5822         }
5823
5824         /* Check if PFC configuration has changed */
5825         if (memcmp(&new_cfg->pfc,
5826                    &old_cfg->pfc,
5827                    sizeof(new_cfg->pfc))) {
5828                 need_reconfig = true;
5829                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5830         }
5831
5832         /* Check if APP Table has changed */
5833         if (memcmp(&new_cfg->app,
5834                    &old_cfg->app,
5835                    sizeof(new_cfg->app))) {
5836                 need_reconfig = true;
5837                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5838         }
5839
5840         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5841         return need_reconfig;
5842 }
5843
5844 /**
5845  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5846  * @pf: board private structure
5847  * @e: event info posted on ARQ
5848  **/
5849 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5850                                   struct i40e_arq_event_info *e)
5851 {
5852         struct i40e_aqc_lldp_get_mib *mib =
5853                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5854         struct i40e_hw *hw = &pf->hw;
5855         struct i40e_dcbx_config tmp_dcbx_cfg;
5856         bool need_reconfig = false;
5857         int ret = 0;
5858         u8 type;
5859
5860         /* Not DCB capable or capability disabled */
5861         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5862                 return ret;
5863
5864         /* Ignore if event is not for Nearest Bridge */
5865         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5866                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5867         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5868         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5869                 return ret;
5870
5871         /* Check MIB Type and return if event for Remote MIB update */
5872         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5873         dev_dbg(&pf->pdev->dev,
5874                 "LLDP event mib type %s\n", type ? "remote" : "local");
5875         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5876                 /* Update the remote cached instance and return */
5877                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5878                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5879                                 &hw->remote_dcbx_config);
5880                 goto exit;
5881         }
5882
5883         /* Store the old configuration */
5884         tmp_dcbx_cfg = hw->local_dcbx_config;
5885
5886         /* Reset the old DCBx configuration data */
5887         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5888         /* Get updated DCBX data from firmware */
5889         ret = i40e_get_dcb_config(&pf->hw);
5890         if (ret) {
5891                 dev_info(&pf->pdev->dev,
5892                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5893                          i40e_stat_str(&pf->hw, ret),
5894                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5895                 goto exit;
5896         }
5897
5898         /* No change detected in DCBX configs */
5899         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5900                     sizeof(tmp_dcbx_cfg))) {
5901                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5902                 goto exit;
5903         }
5904
5905         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5906                                                &hw->local_dcbx_config);
5907
5908         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5909
5910         if (!need_reconfig)
5911                 goto exit;
5912
5913         /* Enable DCB tagging only when more than one TC */
5914         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5915                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5916         else
5917                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5918
5919         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5920         /* Reconfiguration needed quiesce all VSIs */
5921         i40e_pf_quiesce_all_vsi(pf);
5922
5923         /* Changes in configuration update VEB/VSI */
5924         i40e_dcb_reconfigure(pf);
5925
5926         ret = i40e_resume_port_tx(pf);
5927
5928         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5929         /* In case of error no point in resuming VSIs */
5930         if (ret)
5931                 goto exit;
5932
5933         /* Wait for the PF's queues to be disabled */
5934         ret = i40e_pf_wait_queues_disabled(pf);
5935         if (ret) {
5936                 /* Schedule PF reset to recover */
5937                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5938                 i40e_service_event_schedule(pf);
5939         } else {
5940                 i40e_pf_unquiesce_all_vsi(pf);
5941                 /* Notify the client for the DCB changes */
5942                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5943         }
5944
5945 exit:
5946         return ret;
5947 }
5948 #endif /* CONFIG_I40E_DCB */
5949
5950 /**
5951  * i40e_do_reset_safe - Protected reset path for userland calls.
5952  * @pf: board private structure
5953  * @reset_flags: which reset is requested
5954  *
5955  **/
5956 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5957 {
5958         rtnl_lock();
5959         i40e_do_reset(pf, reset_flags);
5960         rtnl_unlock();
5961 }
5962
5963 /**
5964  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5965  * @pf: board private structure
5966  * @e: event info posted on ARQ
5967  *
5968  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5969  * and VF queues
5970  **/
5971 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5972                                            struct i40e_arq_event_info *e)
5973 {
5974         struct i40e_aqc_lan_overflow *data =
5975                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5976         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5977         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5978         struct i40e_hw *hw = &pf->hw;
5979         struct i40e_vf *vf;
5980         u16 vf_id;
5981
5982         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5983                 queue, qtx_ctl);
5984
5985         /* Queue belongs to VF, find the VF and issue VF reset */
5986         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5987             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5988                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5989                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5990                 vf_id -= hw->func_caps.vf_base_id;
5991                 vf = &pf->vf[vf_id];
5992                 i40e_vc_notify_vf_reset(vf);
5993                 /* Allow VF to process pending reset notification */
5994                 msleep(20);
5995                 i40e_reset_vf(vf, false);
5996         }
5997 }
5998
5999 /**
6000  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
6001  * @pf: board private structure
6002  **/
6003 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
6004 {
6005         u32 val, fcnt_prog;
6006
6007         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
6008         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
6009         return fcnt_prog;
6010 }
6011
6012 /**
6013  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
6014  * @pf: board private structure
6015  **/
6016 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
6017 {
6018         u32 val, fcnt_prog;
6019
6020         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
6021         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
6022                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
6023                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
6024         return fcnt_prog;
6025 }
6026
6027 /**
6028  * i40e_get_global_fd_count - Get total FD filters programmed on device
6029  * @pf: board private structure
6030  **/
6031 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
6032 {
6033         u32 val, fcnt_prog;
6034
6035         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
6036         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
6037                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
6038                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
6039         return fcnt_prog;
6040 }
6041
6042 /**
6043  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
6044  * @pf: board private structure
6045  **/
6046 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
6047 {
6048         struct i40e_fdir_filter *filter;
6049         u32 fcnt_prog, fcnt_avail;
6050         struct hlist_node *node;
6051
6052         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6053                 return;
6054
6055         /* Check if, FD SB or ATR was auto disabled and if there is enough room
6056          * to re-enable
6057          */
6058         fcnt_prog = i40e_get_global_fd_count(pf);
6059         fcnt_avail = pf->fdir_pf_filter_count;
6060         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
6061             (pf->fd_add_err == 0) ||
6062             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
6063                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
6064                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
6065                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
6066                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6067                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
6068                 }
6069         }
6070
6071         /* Wait for some more space to be available to turn on ATR. We also
6072          * must check that no existing ntuple rules for TCP are in effect
6073          */
6074         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
6075                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
6076                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED) &&
6077                     (pf->fd_tcp_rule == 0)) {
6078                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6079                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6080                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
6081                 }
6082         }
6083
6084         /* if hw had a problem adding a filter, delete it */
6085         if (pf->fd_inv > 0) {
6086                 hlist_for_each_entry_safe(filter, node,
6087                                           &pf->fdir_filter_list, fdir_node) {
6088                         if (filter->fd_id == pf->fd_inv) {
6089                                 hlist_del(&filter->fdir_node);
6090                                 kfree(filter);
6091                                 pf->fdir_pf_active_filters--;
6092                         }
6093                 }
6094         }
6095 }
6096
6097 #define I40E_MIN_FD_FLUSH_INTERVAL 10
6098 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
6099 /**
6100  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
6101  * @pf: board private structure
6102  **/
6103 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
6104 {
6105         unsigned long min_flush_time;
6106         int flush_wait_retry = 50;
6107         bool disable_atr = false;
6108         int fd_room;
6109         int reg;
6110
6111         if (!time_after(jiffies, pf->fd_flush_timestamp +
6112                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
6113                 return;
6114
6115         /* If the flush is happening too quick and we have mostly SB rules we
6116          * should not re-enable ATR for some time.
6117          */
6118         min_flush_time = pf->fd_flush_timestamp +
6119                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
6120         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
6121
6122         if (!(time_after(jiffies, min_flush_time)) &&
6123             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
6124                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6125                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
6126                 disable_atr = true;
6127         }
6128
6129         pf->fd_flush_timestamp = jiffies;
6130         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
6131         /* flush all filters */
6132         wr32(&pf->hw, I40E_PFQF_CTL_1,
6133              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6134         i40e_flush(&pf->hw);
6135         pf->fd_flush_cnt++;
6136         pf->fd_add_err = 0;
6137         do {
6138                 /* Check FD flush status every 5-6msec */
6139                 usleep_range(5000, 6000);
6140                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6141                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6142                         break;
6143         } while (flush_wait_retry--);
6144         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6145                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6146         } else {
6147                 /* replay sideband filters */
6148                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6149                 if (!disable_atr)
6150                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6151                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6152                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6153                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6154         }
6155 }
6156
6157 /**
6158  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6159  * @pf: board private structure
6160  **/
6161 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6162 {
6163         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6164 }
6165
6166 /* We can see up to 256 filter programming desc in transit if the filters are
6167  * being applied really fast; before we see the first
6168  * filter miss error on Rx queue 0. Accumulating enough error messages before
6169  * reacting will make sure we don't cause flush too often.
6170  */
6171 #define I40E_MAX_FD_PROGRAM_ERROR 256
6172
6173 /**
6174  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6175  * @pf: board private structure
6176  **/
6177 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6178 {
6179
6180         /* if interface is down do nothing */
6181         if (test_bit(__I40E_DOWN, &pf->state))
6182                 return;
6183
6184         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6185                 i40e_fdir_flush_and_replay(pf);
6186
6187         i40e_fdir_check_and_reenable(pf);
6188
6189 }
6190
6191 /**
6192  * i40e_vsi_link_event - notify VSI of a link event
6193  * @vsi: vsi to be notified
6194  * @link_up: link up or down
6195  **/
6196 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6197 {
6198         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6199                 return;
6200
6201         switch (vsi->type) {
6202         case I40E_VSI_MAIN:
6203 #ifdef I40E_FCOE
6204         case I40E_VSI_FCOE:
6205 #endif
6206                 if (!vsi->netdev || !vsi->netdev_registered)
6207                         break;
6208
6209                 if (link_up) {
6210                         netif_carrier_on(vsi->netdev);
6211                         netif_tx_wake_all_queues(vsi->netdev);
6212                 } else {
6213                         netif_carrier_off(vsi->netdev);
6214                         netif_tx_stop_all_queues(vsi->netdev);
6215                 }
6216                 break;
6217
6218         case I40E_VSI_SRIOV:
6219         case I40E_VSI_VMDQ2:
6220         case I40E_VSI_CTRL:
6221         case I40E_VSI_IWARP:
6222         case I40E_VSI_MIRROR:
6223         default:
6224                 /* there is no notification for other VSIs */
6225                 break;
6226         }
6227 }
6228
6229 /**
6230  * i40e_veb_link_event - notify elements on the veb of a link event
6231  * @veb: veb to be notified
6232  * @link_up: link up or down
6233  **/
6234 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6235 {
6236         struct i40e_pf *pf;
6237         int i;
6238
6239         if (!veb || !veb->pf)
6240                 return;
6241         pf = veb->pf;
6242
6243         /* depth first... */
6244         for (i = 0; i < I40E_MAX_VEB; i++)
6245                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6246                         i40e_veb_link_event(pf->veb[i], link_up);
6247
6248         /* ... now the local VSIs */
6249         for (i = 0; i < pf->num_alloc_vsi; i++)
6250                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6251                         i40e_vsi_link_event(pf->vsi[i], link_up);
6252 }
6253
6254 /**
6255  * i40e_link_event - Update netif_carrier status
6256  * @pf: board private structure
6257  **/
6258 static void i40e_link_event(struct i40e_pf *pf)
6259 {
6260         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6261         u8 new_link_speed, old_link_speed;
6262         i40e_status status;
6263         bool new_link, old_link;
6264
6265         /* save off old link status information */
6266         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6267
6268         /* set this to force the get_link_status call to refresh state */
6269         pf->hw.phy.get_link_info = true;
6270
6271         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6272
6273         status = i40e_get_link_status(&pf->hw, &new_link);
6274         if (status) {
6275                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6276                         status);
6277                 return;
6278         }
6279
6280         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6281         new_link_speed = pf->hw.phy.link_info.link_speed;
6282
6283         if (new_link == old_link &&
6284             new_link_speed == old_link_speed &&
6285             (test_bit(__I40E_DOWN, &vsi->state) ||
6286              new_link == netif_carrier_ok(vsi->netdev)))
6287                 return;
6288
6289         if (!test_bit(__I40E_DOWN, &vsi->state))
6290                 i40e_print_link_message(vsi, new_link);
6291
6292         /* Notify the base of the switch tree connected to
6293          * the link.  Floating VEBs are not notified.
6294          */
6295         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6296                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6297         else
6298                 i40e_vsi_link_event(vsi, new_link);
6299
6300         if (pf->vf)
6301                 i40e_vc_notify_link_state(pf);
6302
6303         if (pf->flags & I40E_FLAG_PTP)
6304                 i40e_ptp_set_increment(pf);
6305 }
6306
6307 /**
6308  * i40e_watchdog_subtask - periodic checks not using event driven response
6309  * @pf: board private structure
6310  **/
6311 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6312 {
6313         int i;
6314
6315         /* if interface is down do nothing */
6316         if (test_bit(__I40E_DOWN, &pf->state) ||
6317             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6318                 return;
6319
6320         /* make sure we don't do these things too often */
6321         if (time_before(jiffies, (pf->service_timer_previous +
6322                                   pf->service_timer_period)))
6323                 return;
6324         pf->service_timer_previous = jiffies;
6325
6326         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6327                 i40e_link_event(pf);
6328
6329         /* Update the stats for active netdevs so the network stack
6330          * can look at updated numbers whenever it cares to
6331          */
6332         for (i = 0; i < pf->num_alloc_vsi; i++)
6333                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6334                         i40e_update_stats(pf->vsi[i]);
6335
6336         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6337                 /* Update the stats for the active switching components */
6338                 for (i = 0; i < I40E_MAX_VEB; i++)
6339                         if (pf->veb[i])
6340                                 i40e_update_veb_stats(pf->veb[i]);
6341         }
6342
6343         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6344 }
6345
6346 /**
6347  * i40e_reset_subtask - Set up for resetting the device and driver
6348  * @pf: board private structure
6349  **/
6350 static void i40e_reset_subtask(struct i40e_pf *pf)
6351 {
6352         u32 reset_flags = 0;
6353
6354         rtnl_lock();
6355         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6356                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6357                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6358         }
6359         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6360                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6361                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6362         }
6363         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6364                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6365                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6366         }
6367         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6368                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6369                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6370         }
6371         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6372                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6373                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6374         }
6375
6376         /* If there's a recovery already waiting, it takes
6377          * precedence before starting a new reset sequence.
6378          */
6379         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6380                 i40e_handle_reset_warning(pf);
6381                 goto unlock;
6382         }
6383
6384         /* If we're already down or resetting, just bail */
6385         if (reset_flags &&
6386             !test_bit(__I40E_DOWN, &pf->state) &&
6387             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6388                 i40e_do_reset(pf, reset_flags);
6389
6390 unlock:
6391         rtnl_unlock();
6392 }
6393
6394 /**
6395  * i40e_handle_link_event - Handle link event
6396  * @pf: board private structure
6397  * @e: event info posted on ARQ
6398  **/
6399 static void i40e_handle_link_event(struct i40e_pf *pf,
6400                                    struct i40e_arq_event_info *e)
6401 {
6402         struct i40e_aqc_get_link_status *status =
6403                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6404
6405         /* Do a new status request to re-enable LSE reporting
6406          * and load new status information into the hw struct
6407          * This completely ignores any state information
6408          * in the ARQ event info, instead choosing to always
6409          * issue the AQ update link status command.
6410          */
6411         i40e_link_event(pf);
6412
6413         /* check for unqualified module, if link is down */
6414         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6415             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6416             (!(status->link_info & I40E_AQ_LINK_UP)))
6417                 dev_err(&pf->pdev->dev,
6418                         "The driver failed to link because an unqualified module was detected.\n");
6419 }
6420
6421 /**
6422  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6423  * @pf: board private structure
6424  **/
6425 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6426 {
6427         struct i40e_arq_event_info event;
6428         struct i40e_hw *hw = &pf->hw;
6429         u16 pending, i = 0;
6430         i40e_status ret;
6431         u16 opcode;
6432         u32 oldval;
6433         u32 val;
6434
6435         /* Do not run clean AQ when PF reset fails */
6436         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6437                 return;
6438
6439         /* check for error indications */
6440         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6441         oldval = val;
6442         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6443                 if (hw->debug_mask & I40E_DEBUG_AQ)
6444                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6445                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6446         }
6447         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6448                 if (hw->debug_mask & I40E_DEBUG_AQ)
6449                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6450                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6451                 pf->arq_overflows++;
6452         }
6453         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6454                 if (hw->debug_mask & I40E_DEBUG_AQ)
6455                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6456                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6457         }
6458         if (oldval != val)
6459                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6460
6461         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6462         oldval = val;
6463         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6464                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6465                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6466                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6467         }
6468         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6469                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6470                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6471                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6472         }
6473         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6474                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6475                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6476                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6477         }
6478         if (oldval != val)
6479                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6480
6481         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6482         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6483         if (!event.msg_buf)
6484                 return;
6485
6486         do {
6487                 ret = i40e_clean_arq_element(hw, &event, &pending);
6488                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6489                         break;
6490                 else if (ret) {
6491                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6492                         break;
6493                 }
6494
6495                 opcode = le16_to_cpu(event.desc.opcode);
6496                 switch (opcode) {
6497
6498                 case i40e_aqc_opc_get_link_status:
6499                         i40e_handle_link_event(pf, &event);
6500                         break;
6501                 case i40e_aqc_opc_send_msg_to_pf:
6502                         ret = i40e_vc_process_vf_msg(pf,
6503                                         le16_to_cpu(event.desc.retval),
6504                                         le32_to_cpu(event.desc.cookie_high),
6505                                         le32_to_cpu(event.desc.cookie_low),
6506                                         event.msg_buf,
6507                                         event.msg_len);
6508                         break;
6509                 case i40e_aqc_opc_lldp_update_mib:
6510                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6511 #ifdef CONFIG_I40E_DCB
6512                         rtnl_lock();
6513                         ret = i40e_handle_lldp_event(pf, &event);
6514                         rtnl_unlock();
6515 #endif /* CONFIG_I40E_DCB */
6516                         break;
6517                 case i40e_aqc_opc_event_lan_overflow:
6518                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6519                         i40e_handle_lan_overflow_event(pf, &event);
6520                         break;
6521                 case i40e_aqc_opc_send_msg_to_peer:
6522                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6523                         break;
6524                 case i40e_aqc_opc_nvm_erase:
6525                 case i40e_aqc_opc_nvm_update:
6526                 case i40e_aqc_opc_oem_post_update:
6527                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6528                                    "ARQ NVM operation 0x%04x completed\n",
6529                                    opcode);
6530                         break;
6531                 default:
6532                         dev_info(&pf->pdev->dev,
6533                                  "ARQ: Unknown event 0x%04x ignored\n",
6534                                  opcode);
6535                         break;
6536                 }
6537         } while (pending && (i++ < pf->adminq_work_limit));
6538
6539         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6540         /* re-enable Admin queue interrupt cause */
6541         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6542         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6543         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6544         i40e_flush(hw);
6545
6546         kfree(event.msg_buf);
6547 }
6548
6549 /**
6550  * i40e_verify_eeprom - make sure eeprom is good to use
6551  * @pf: board private structure
6552  **/
6553 static void i40e_verify_eeprom(struct i40e_pf *pf)
6554 {
6555         int err;
6556
6557         err = i40e_diag_eeprom_test(&pf->hw);
6558         if (err) {
6559                 /* retry in case of garbage read */
6560                 err = i40e_diag_eeprom_test(&pf->hw);
6561                 if (err) {
6562                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6563                                  err);
6564                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6565                 }
6566         }
6567
6568         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6569                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6570                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6571         }
6572 }
6573
6574 /**
6575  * i40e_enable_pf_switch_lb
6576  * @pf: pointer to the PF structure
6577  *
6578  * enable switch loop back or die - no point in a return value
6579  **/
6580 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6581 {
6582         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6583         struct i40e_vsi_context ctxt;
6584         int ret;
6585
6586         ctxt.seid = pf->main_vsi_seid;
6587         ctxt.pf_num = pf->hw.pf_id;
6588         ctxt.vf_num = 0;
6589         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6590         if (ret) {
6591                 dev_info(&pf->pdev->dev,
6592                          "couldn't get PF vsi config, err %s aq_err %s\n",
6593                          i40e_stat_str(&pf->hw, ret),
6594                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6595                 return;
6596         }
6597         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6598         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6599         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6600
6601         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6602         if (ret) {
6603                 dev_info(&pf->pdev->dev,
6604                          "update vsi switch failed, err %s aq_err %s\n",
6605                          i40e_stat_str(&pf->hw, ret),
6606                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6607         }
6608 }
6609
6610 /**
6611  * i40e_disable_pf_switch_lb
6612  * @pf: pointer to the PF structure
6613  *
6614  * disable switch loop back or die - no point in a return value
6615  **/
6616 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6617 {
6618         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6619         struct i40e_vsi_context ctxt;
6620         int ret;
6621
6622         ctxt.seid = pf->main_vsi_seid;
6623         ctxt.pf_num = pf->hw.pf_id;
6624         ctxt.vf_num = 0;
6625         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6626         if (ret) {
6627                 dev_info(&pf->pdev->dev,
6628                          "couldn't get PF vsi config, err %s aq_err %s\n",
6629                          i40e_stat_str(&pf->hw, ret),
6630                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6631                 return;
6632         }
6633         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6634         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6635         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6636
6637         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6638         if (ret) {
6639                 dev_info(&pf->pdev->dev,
6640                          "update vsi switch failed, err %s aq_err %s\n",
6641                          i40e_stat_str(&pf->hw, ret),
6642                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6643         }
6644 }
6645
6646 /**
6647  * i40e_config_bridge_mode - Configure the HW bridge mode
6648  * @veb: pointer to the bridge instance
6649  *
6650  * Configure the loop back mode for the LAN VSI that is downlink to the
6651  * specified HW bridge instance. It is expected this function is called
6652  * when a new HW bridge is instantiated.
6653  **/
6654 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6655 {
6656         struct i40e_pf *pf = veb->pf;
6657
6658         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6659                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6660                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6661         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6662                 i40e_disable_pf_switch_lb(pf);
6663         else
6664                 i40e_enable_pf_switch_lb(pf);
6665 }
6666
6667 /**
6668  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6669  * @veb: pointer to the VEB instance
6670  *
6671  * This is a recursive function that first builds the attached VSIs then
6672  * recurses in to build the next layer of VEB.  We track the connections
6673  * through our own index numbers because the seid's from the HW could
6674  * change across the reset.
6675  **/
6676 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6677 {
6678         struct i40e_vsi *ctl_vsi = NULL;
6679         struct i40e_pf *pf = veb->pf;
6680         int v, veb_idx;
6681         int ret;
6682
6683         /* build VSI that owns this VEB, temporarily attached to base VEB */
6684         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6685                 if (pf->vsi[v] &&
6686                     pf->vsi[v]->veb_idx == veb->idx &&
6687                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6688                         ctl_vsi = pf->vsi[v];
6689                         break;
6690                 }
6691         }
6692         if (!ctl_vsi) {
6693                 dev_info(&pf->pdev->dev,
6694                          "missing owner VSI for veb_idx %d\n", veb->idx);
6695                 ret = -ENOENT;
6696                 goto end_reconstitute;
6697         }
6698         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6699                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6700         ret = i40e_add_vsi(ctl_vsi);
6701         if (ret) {
6702                 dev_info(&pf->pdev->dev,
6703                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6704                          veb->idx, ret);
6705                 goto end_reconstitute;
6706         }
6707         i40e_vsi_reset_stats(ctl_vsi);
6708
6709         /* create the VEB in the switch and move the VSI onto the VEB */
6710         ret = i40e_add_veb(veb, ctl_vsi);
6711         if (ret)
6712                 goto end_reconstitute;
6713
6714         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6715                 veb->bridge_mode = BRIDGE_MODE_VEB;
6716         else
6717                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6718         i40e_config_bridge_mode(veb);
6719
6720         /* create the remaining VSIs attached to this VEB */
6721         for (v = 0; v < pf->num_alloc_vsi; v++) {
6722                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6723                         continue;
6724
6725                 if (pf->vsi[v]->veb_idx == veb->idx) {
6726                         struct i40e_vsi *vsi = pf->vsi[v];
6727
6728                         vsi->uplink_seid = veb->seid;
6729                         ret = i40e_add_vsi(vsi);
6730                         if (ret) {
6731                                 dev_info(&pf->pdev->dev,
6732                                          "rebuild of vsi_idx %d failed: %d\n",
6733                                          v, ret);
6734                                 goto end_reconstitute;
6735                         }
6736                         i40e_vsi_reset_stats(vsi);
6737                 }
6738         }
6739
6740         /* create any VEBs attached to this VEB - RECURSION */
6741         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6742                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6743                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6744                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6745                         if (ret)
6746                                 break;
6747                 }
6748         }
6749
6750 end_reconstitute:
6751         return ret;
6752 }
6753
6754 /**
6755  * i40e_get_capabilities - get info about the HW
6756  * @pf: the PF struct
6757  **/
6758 static int i40e_get_capabilities(struct i40e_pf *pf)
6759 {
6760         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6761         u16 data_size;
6762         int buf_len;
6763         int err;
6764
6765         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6766         do {
6767                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6768                 if (!cap_buf)
6769                         return -ENOMEM;
6770
6771                 /* this loads the data into the hw struct for us */
6772                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6773                                             &data_size,
6774                                             i40e_aqc_opc_list_func_capabilities,
6775                                             NULL);
6776                 /* data loaded, buffer no longer needed */
6777                 kfree(cap_buf);
6778
6779                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6780                         /* retry with a larger buffer */
6781                         buf_len = data_size;
6782                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6783                         dev_info(&pf->pdev->dev,
6784                                  "capability discovery failed, err %s aq_err %s\n",
6785                                  i40e_stat_str(&pf->hw, err),
6786                                  i40e_aq_str(&pf->hw,
6787                                              pf->hw.aq.asq_last_status));
6788                         return -ENODEV;
6789                 }
6790         } while (err);
6791
6792         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6793                 dev_info(&pf->pdev->dev,
6794                          "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",
6795                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6796                          pf->hw.func_caps.num_msix_vectors,
6797                          pf->hw.func_caps.num_msix_vectors_vf,
6798                          pf->hw.func_caps.fd_filters_guaranteed,
6799                          pf->hw.func_caps.fd_filters_best_effort,
6800                          pf->hw.func_caps.num_tx_qp,
6801                          pf->hw.func_caps.num_vsis);
6802
6803 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6804                        + pf->hw.func_caps.num_vfs)
6805         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6806                 dev_info(&pf->pdev->dev,
6807                          "got num_vsis %d, setting num_vsis to %d\n",
6808                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6809                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6810         }
6811
6812         return 0;
6813 }
6814
6815 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6816
6817 /**
6818  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6819  * @pf: board private structure
6820  **/
6821 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6822 {
6823         struct i40e_vsi *vsi;
6824
6825         /* quick workaround for an NVM issue that leaves a critical register
6826          * uninitialized
6827          */
6828         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6829                 static const u32 hkey[] = {
6830                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6831                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6832                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6833                         0x95b3a76d};
6834                 int i;
6835
6836                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6837                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6838         }
6839
6840         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6841                 return;
6842
6843         /* find existing VSI and see if it needs configuring */
6844         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6845
6846         /* create a new VSI if none exists */
6847         if (!vsi) {
6848                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6849                                      pf->vsi[pf->lan_vsi]->seid, 0);
6850                 if (!vsi) {
6851                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6852                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6853                         return;
6854                 }
6855         }
6856
6857         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6858 }
6859
6860 /**
6861  * i40e_fdir_teardown - release the Flow Director resources
6862  * @pf: board private structure
6863  **/
6864 static void i40e_fdir_teardown(struct i40e_pf *pf)
6865 {
6866         struct i40e_vsi *vsi;
6867
6868         i40e_fdir_filter_exit(pf);
6869         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6870         if (vsi)
6871                 i40e_vsi_release(vsi);
6872 }
6873
6874 /**
6875  * i40e_prep_for_reset - prep for the core to reset
6876  * @pf: board private structure
6877  *
6878  * Close up the VFs and other things in prep for PF Reset.
6879   **/
6880 static void i40e_prep_for_reset(struct i40e_pf *pf)
6881 {
6882         struct i40e_hw *hw = &pf->hw;
6883         i40e_status ret = 0;
6884         u32 v;
6885
6886         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6887         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6888                 return;
6889         if (i40e_check_asq_alive(&pf->hw))
6890                 i40e_vc_notify_reset(pf);
6891
6892         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6893
6894         /* quiesce the VSIs and their queues that are not already DOWN */
6895         i40e_pf_quiesce_all_vsi(pf);
6896
6897         for (v = 0; v < pf->num_alloc_vsi; v++) {
6898                 if (pf->vsi[v])
6899                         pf->vsi[v]->seid = 0;
6900         }
6901
6902         i40e_shutdown_adminq(&pf->hw);
6903
6904         /* call shutdown HMC */
6905         if (hw->hmc.hmc_obj) {
6906                 ret = i40e_shutdown_lan_hmc(hw);
6907                 if (ret)
6908                         dev_warn(&pf->pdev->dev,
6909                                  "shutdown_lan_hmc failed: %d\n", ret);
6910         }
6911 }
6912
6913 /**
6914  * i40e_send_version - update firmware with driver version
6915  * @pf: PF struct
6916  */
6917 static void i40e_send_version(struct i40e_pf *pf)
6918 {
6919         struct i40e_driver_version dv;
6920
6921         dv.major_version = DRV_VERSION_MAJOR;
6922         dv.minor_version = DRV_VERSION_MINOR;
6923         dv.build_version = DRV_VERSION_BUILD;
6924         dv.subbuild_version = 0;
6925         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6926         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6927 }
6928
6929 /**
6930  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6931  * @pf: board private structure
6932  * @reinit: if the Main VSI needs to re-initialized.
6933  **/
6934 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6935 {
6936         struct i40e_hw *hw = &pf->hw;
6937         u8 set_fc_aq_fail = 0;
6938         i40e_status ret;
6939         u32 val;
6940         u32 v;
6941
6942         /* Now we wait for GRST to settle out.
6943          * We don't have to delete the VEBs or VSIs from the hw switch
6944          * because the reset will make them disappear.
6945          */
6946         ret = i40e_pf_reset(hw);
6947         if (ret) {
6948                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6949                 set_bit(__I40E_RESET_FAILED, &pf->state);
6950                 goto clear_recovery;
6951         }
6952         pf->pfr_count++;
6953
6954         if (test_bit(__I40E_DOWN, &pf->state))
6955                 goto clear_recovery;
6956         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6957
6958         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6959         ret = i40e_init_adminq(&pf->hw);
6960         if (ret) {
6961                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6962                          i40e_stat_str(&pf->hw, ret),
6963                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6964                 goto clear_recovery;
6965         }
6966
6967         /* re-verify the eeprom if we just had an EMP reset */
6968         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6969                 i40e_verify_eeprom(pf);
6970
6971         i40e_clear_pxe_mode(hw);
6972         ret = i40e_get_capabilities(pf);
6973         if (ret)
6974                 goto end_core_reset;
6975
6976         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6977                                 hw->func_caps.num_rx_qp,
6978                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6979         if (ret) {
6980                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6981                 goto end_core_reset;
6982         }
6983         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6984         if (ret) {
6985                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6986                 goto end_core_reset;
6987         }
6988
6989 #ifdef CONFIG_I40E_DCB
6990         ret = i40e_init_pf_dcb(pf);
6991         if (ret) {
6992                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6993                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6994                 /* Continue without DCB enabled */
6995         }
6996 #endif /* CONFIG_I40E_DCB */
6997 #ifdef I40E_FCOE
6998         i40e_init_pf_fcoe(pf);
6999
7000 #endif
7001         /* do basic switch setup */
7002         ret = i40e_setup_pf_switch(pf, reinit);
7003         if (ret)
7004                 goto end_core_reset;
7005
7006         /* The driver only wants link up/down and module qualification
7007          * reports from firmware.  Note the negative logic.
7008          */
7009         ret = i40e_aq_set_phy_int_mask(&pf->hw,
7010                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
7011                                          I40E_AQ_EVENT_MEDIA_NA |
7012                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
7013         if (ret)
7014                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
7015                          i40e_stat_str(&pf->hw, ret),
7016                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7017
7018         /* make sure our flow control settings are restored */
7019         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
7020         if (ret)
7021                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
7022                         i40e_stat_str(&pf->hw, ret),
7023                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7024
7025         /* Rebuild the VSIs and VEBs that existed before reset.
7026          * They are still in our local switch element arrays, so only
7027          * need to rebuild the switch model in the HW.
7028          *
7029          * If there were VEBs but the reconstitution failed, we'll try
7030          * try to recover minimal use by getting the basic PF VSI working.
7031          */
7032         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
7033                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
7034                 /* find the one VEB connected to the MAC, and find orphans */
7035                 for (v = 0; v < I40E_MAX_VEB; v++) {
7036                         if (!pf->veb[v])
7037                                 continue;
7038
7039                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
7040                             pf->veb[v]->uplink_seid == 0) {
7041                                 ret = i40e_reconstitute_veb(pf->veb[v]);
7042
7043                                 if (!ret)
7044                                         continue;
7045
7046                                 /* If Main VEB failed, we're in deep doodoo,
7047                                  * so give up rebuilding the switch and set up
7048                                  * for minimal rebuild of PF VSI.
7049                                  * If orphan failed, we'll report the error
7050                                  * but try to keep going.
7051                                  */
7052                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
7053                                         dev_info(&pf->pdev->dev,
7054                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
7055                                                  ret);
7056                                         pf->vsi[pf->lan_vsi]->uplink_seid
7057                                                                 = pf->mac_seid;
7058                                         break;
7059                                 } else if (pf->veb[v]->uplink_seid == 0) {
7060                                         dev_info(&pf->pdev->dev,
7061                                                  "rebuild of orphan VEB failed: %d\n",
7062                                                  ret);
7063                                 }
7064                         }
7065                 }
7066         }
7067
7068         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
7069                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
7070                 /* no VEB, so rebuild only the Main VSI */
7071                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
7072                 if (ret) {
7073                         dev_info(&pf->pdev->dev,
7074                                  "rebuild of Main VSI failed: %d\n", ret);
7075                         goto end_core_reset;
7076                 }
7077         }
7078
7079         /* Reconfigure hardware for allowing smaller MSS in the case
7080          * of TSO, so that we avoid the MDD being fired and causing
7081          * a reset in the case of small MSS+TSO.
7082          */
7083 #define I40E_REG_MSS          0x000E64DC
7084 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
7085 #define I40E_64BYTE_MSS       0x400000
7086         val = rd32(hw, I40E_REG_MSS);
7087         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
7088                 val &= ~I40E_REG_MSS_MIN_MASK;
7089                 val |= I40E_64BYTE_MSS;
7090                 wr32(hw, I40E_REG_MSS, val);
7091         }
7092
7093         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
7094                 msleep(75);
7095                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
7096                 if (ret)
7097                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
7098                                  i40e_stat_str(&pf->hw, ret),
7099                                  i40e_aq_str(&pf->hw,
7100                                              pf->hw.aq.asq_last_status));
7101         }
7102         /* reinit the misc interrupt */
7103         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7104                 ret = i40e_setup_misc_vector(pf);
7105
7106         /* Add a filter to drop all Flow control frames from any VSI from being
7107          * transmitted. By doing so we stop a malicious VF from sending out
7108          * PAUSE or PFC frames and potentially controlling traffic for other
7109          * PF/VF VSIs.
7110          * The FW can still send Flow control frames if enabled.
7111          */
7112         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
7113                                                        pf->main_vsi_seid);
7114
7115         /* restart the VSIs that were rebuilt and running before the reset */
7116         i40e_pf_unquiesce_all_vsi(pf);
7117
7118         if (pf->num_alloc_vfs) {
7119                 for (v = 0; v < pf->num_alloc_vfs; v++)
7120                         i40e_reset_vf(&pf->vf[v], true);
7121         }
7122
7123         /* tell the firmware that we're starting */
7124         i40e_send_version(pf);
7125
7126 end_core_reset:
7127         clear_bit(__I40E_RESET_FAILED, &pf->state);
7128 clear_recovery:
7129         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7130 }
7131
7132 /**
7133  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7134  * @pf: board private structure
7135  *
7136  * Close up the VFs and other things in prep for a Core Reset,
7137  * then get ready to rebuild the world.
7138  **/
7139 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7140 {
7141         i40e_prep_for_reset(pf);
7142         i40e_reset_and_rebuild(pf, false);
7143 }
7144
7145 /**
7146  * i40e_handle_mdd_event
7147  * @pf: pointer to the PF structure
7148  *
7149  * Called from the MDD irq handler to identify possibly malicious vfs
7150  **/
7151 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7152 {
7153         struct i40e_hw *hw = &pf->hw;
7154         bool mdd_detected = false;
7155         bool pf_mdd_detected = false;
7156         struct i40e_vf *vf;
7157         u32 reg;
7158         int i;
7159
7160         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7161                 return;
7162
7163         /* find what triggered the MDD event */
7164         reg = rd32(hw, I40E_GL_MDET_TX);
7165         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7166                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7167                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7168                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7169                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7170                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7171                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7172                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7173                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7174                                 pf->hw.func_caps.base_queue;
7175                 if (netif_msg_tx_err(pf))
7176                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7177                                  event, queue, pf_num, vf_num);
7178                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7179                 mdd_detected = true;
7180         }
7181         reg = rd32(hw, I40E_GL_MDET_RX);
7182         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7183                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7184                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7185                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7186                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7187                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7188                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7189                                 pf->hw.func_caps.base_queue;
7190                 if (netif_msg_rx_err(pf))
7191                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7192                                  event, queue, func);
7193                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7194                 mdd_detected = true;
7195         }
7196
7197         if (mdd_detected) {
7198                 reg = rd32(hw, I40E_PF_MDET_TX);
7199                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7200                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7201                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7202                         pf_mdd_detected = true;
7203                 }
7204                 reg = rd32(hw, I40E_PF_MDET_RX);
7205                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7206                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7207                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7208                         pf_mdd_detected = true;
7209                 }
7210                 /* Queue belongs to the PF, initiate a reset */
7211                 if (pf_mdd_detected) {
7212                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7213                         i40e_service_event_schedule(pf);
7214                 }
7215         }
7216
7217         /* see if one of the VFs needs its hand slapped */
7218         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7219                 vf = &(pf->vf[i]);
7220                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7221                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7222                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7223                         vf->num_mdd_events++;
7224                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7225                                  i);
7226                 }
7227
7228                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7229                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7230                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7231                         vf->num_mdd_events++;
7232                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7233                                  i);
7234                 }
7235
7236                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7237                         dev_info(&pf->pdev->dev,
7238                                  "Too many MDD events on VF %d, disabled\n", i);
7239                         dev_info(&pf->pdev->dev,
7240                                  "Use PF Control I/F to re-enable the VF\n");
7241                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7242                 }
7243         }
7244
7245         /* re-enable mdd interrupt cause */
7246         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7247         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7248         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7249         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7250         i40e_flush(hw);
7251 }
7252
7253 /**
7254  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7255  * @pf: board private structure
7256  **/
7257 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7258 {
7259         struct i40e_hw *hw = &pf->hw;
7260         i40e_status ret;
7261         __be16 port;
7262         int i;
7263
7264         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7265                 return;
7266
7267         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7268
7269         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7270                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7271                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7272                         port = pf->udp_ports[i].index;
7273                         if (port)
7274                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7275                                                         pf->udp_ports[i].type,
7276                                                         NULL, NULL);
7277                         else
7278                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7279
7280                         if (ret) {
7281                                 dev_dbg(&pf->pdev->dev,
7282                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7283                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7284                                         port ? "add" : "delete",
7285                                         ntohs(port), i,
7286                                         i40e_stat_str(&pf->hw, ret),
7287                                         i40e_aq_str(&pf->hw,
7288                                                     pf->hw.aq.asq_last_status));
7289                                 pf->udp_ports[i].index = 0;
7290                         }
7291                 }
7292         }
7293 }
7294
7295 /**
7296  * i40e_service_task - Run the driver's async subtasks
7297  * @work: pointer to work_struct containing our data
7298  **/
7299 static void i40e_service_task(struct work_struct *work)
7300 {
7301         struct i40e_pf *pf = container_of(work,
7302                                           struct i40e_pf,
7303                                           service_task);
7304         unsigned long start_time = jiffies;
7305
7306         /* don't bother with service tasks if a reset is in progress */
7307         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7308                 return;
7309         }
7310
7311         if (test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
7312                 return;
7313
7314         i40e_detect_recover_hung(pf);
7315         i40e_sync_filters_subtask(pf);
7316         i40e_reset_subtask(pf);
7317         i40e_handle_mdd_event(pf);
7318         i40e_vc_process_vflr_event(pf);
7319         i40e_watchdog_subtask(pf);
7320         i40e_fdir_reinit_subtask(pf);
7321         i40e_client_subtask(pf);
7322         i40e_sync_filters_subtask(pf);
7323         i40e_sync_udp_filters_subtask(pf);
7324         i40e_clean_adminq_subtask(pf);
7325
7326         /* flush memory to make sure state is correct before next watchdog */
7327         smp_mb__before_atomic();
7328         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7329
7330         /* If the tasks have taken longer than one timer cycle or there
7331          * is more work to be done, reschedule the service task now
7332          * rather than wait for the timer to tick again.
7333          */
7334         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7335             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7336             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7337             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7338                 i40e_service_event_schedule(pf);
7339 }
7340
7341 /**
7342  * i40e_service_timer - timer callback
7343  * @data: pointer to PF struct
7344  **/
7345 static void i40e_service_timer(unsigned long data)
7346 {
7347         struct i40e_pf *pf = (struct i40e_pf *)data;
7348
7349         mod_timer(&pf->service_timer,
7350                   round_jiffies(jiffies + pf->service_timer_period));
7351         i40e_service_event_schedule(pf);
7352 }
7353
7354 /**
7355  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7356  * @vsi: the VSI being configured
7357  **/
7358 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7359 {
7360         struct i40e_pf *pf = vsi->back;
7361
7362         switch (vsi->type) {
7363         case I40E_VSI_MAIN:
7364                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7365                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7366                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7367                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7368                         vsi->num_q_vectors = pf->num_lan_msix;
7369                 else
7370                         vsi->num_q_vectors = 1;
7371
7372                 break;
7373
7374         case I40E_VSI_FDIR:
7375                 vsi->alloc_queue_pairs = 1;
7376                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7377                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7378                 vsi->num_q_vectors = pf->num_fdsb_msix;
7379                 break;
7380
7381         case I40E_VSI_VMDQ2:
7382                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7383                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7384                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7385                 vsi->num_q_vectors = pf->num_vmdq_msix;
7386                 break;
7387
7388         case I40E_VSI_SRIOV:
7389                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7390                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7391                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7392                 break;
7393
7394 #ifdef I40E_FCOE
7395         case I40E_VSI_FCOE:
7396                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7397                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7398                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7399                 vsi->num_q_vectors = pf->num_fcoe_msix;
7400                 break;
7401
7402 #endif /* I40E_FCOE */
7403         default:
7404                 WARN_ON(1);
7405                 return -ENODATA;
7406         }
7407
7408         return 0;
7409 }
7410
7411 /**
7412  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7413  * @type: VSI pointer
7414  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7415  *
7416  * On error: returns error code (negative)
7417  * On success: returns 0
7418  **/
7419 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7420 {
7421         int size;
7422         int ret = 0;
7423
7424         /* allocate memory for both Tx and Rx ring pointers */
7425         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7426         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7427         if (!vsi->tx_rings)
7428                 return -ENOMEM;
7429         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7430
7431         if (alloc_qvectors) {
7432                 /* allocate memory for q_vector pointers */
7433                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7434                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7435                 if (!vsi->q_vectors) {
7436                         ret = -ENOMEM;
7437                         goto err_vectors;
7438                 }
7439         }
7440         return ret;
7441
7442 err_vectors:
7443         kfree(vsi->tx_rings);
7444         return ret;
7445 }
7446
7447 /**
7448  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7449  * @pf: board private structure
7450  * @type: type of VSI
7451  *
7452  * On error: returns error code (negative)
7453  * On success: returns vsi index in PF (positive)
7454  **/
7455 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7456 {
7457         int ret = -ENODEV;
7458         struct i40e_vsi *vsi;
7459         int vsi_idx;
7460         int i;
7461
7462         /* Need to protect the allocation of the VSIs at the PF level */
7463         mutex_lock(&pf->switch_mutex);
7464
7465         /* VSI list may be fragmented if VSI creation/destruction has
7466          * been happening.  We can afford to do a quick scan to look
7467          * for any free VSIs in the list.
7468          *
7469          * find next empty vsi slot, looping back around if necessary
7470          */
7471         i = pf->next_vsi;
7472         while (i < pf->num_alloc_vsi && pf->vsi[i])
7473                 i++;
7474         if (i >= pf->num_alloc_vsi) {
7475                 i = 0;
7476                 while (i < pf->next_vsi && pf->vsi[i])
7477                         i++;
7478         }
7479
7480         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7481                 vsi_idx = i;             /* Found one! */
7482         } else {
7483                 ret = -ENODEV;
7484                 goto unlock_pf;  /* out of VSI slots! */
7485         }
7486         pf->next_vsi = ++i;
7487
7488         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7489         if (!vsi) {
7490                 ret = -ENOMEM;
7491                 goto unlock_pf;
7492         }
7493         vsi->type = type;
7494         vsi->back = pf;
7495         set_bit(__I40E_DOWN, &vsi->state);
7496         vsi->flags = 0;
7497         vsi->idx = vsi_idx;
7498         vsi->int_rate_limit = 0;
7499         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7500                                 pf->rss_table_size : 64;
7501         vsi->netdev_registered = false;
7502         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7503         hash_init(vsi->mac_filter_hash);
7504         vsi->irqs_ready = false;
7505
7506         ret = i40e_set_num_rings_in_vsi(vsi);
7507         if (ret)
7508                 goto err_rings;
7509
7510         ret = i40e_vsi_alloc_arrays(vsi, true);
7511         if (ret)
7512                 goto err_rings;
7513
7514         /* Setup default MSIX irq handler for VSI */
7515         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7516
7517         /* Initialize VSI lock */
7518         spin_lock_init(&vsi->mac_filter_hash_lock);
7519         pf->vsi[vsi_idx] = vsi;
7520         ret = vsi_idx;
7521         goto unlock_pf;
7522
7523 err_rings:
7524         pf->next_vsi = i - 1;
7525         kfree(vsi);
7526 unlock_pf:
7527         mutex_unlock(&pf->switch_mutex);
7528         return ret;
7529 }
7530
7531 /**
7532  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7533  * @type: VSI pointer
7534  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7535  *
7536  * On error: returns error code (negative)
7537  * On success: returns 0
7538  **/
7539 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7540 {
7541         /* free the ring and vector containers */
7542         if (free_qvectors) {
7543                 kfree(vsi->q_vectors);
7544                 vsi->q_vectors = NULL;
7545         }
7546         kfree(vsi->tx_rings);
7547         vsi->tx_rings = NULL;
7548         vsi->rx_rings = NULL;
7549 }
7550
7551 /**
7552  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7553  * and lookup table
7554  * @vsi: Pointer to VSI structure
7555  */
7556 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7557 {
7558         if (!vsi)
7559                 return;
7560
7561         kfree(vsi->rss_hkey_user);
7562         vsi->rss_hkey_user = NULL;
7563
7564         kfree(vsi->rss_lut_user);
7565         vsi->rss_lut_user = NULL;
7566 }
7567
7568 /**
7569  * i40e_vsi_clear - Deallocate the VSI provided
7570  * @vsi: the VSI being un-configured
7571  **/
7572 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7573 {
7574         struct i40e_pf *pf;
7575
7576         if (!vsi)
7577                 return 0;
7578
7579         if (!vsi->back)
7580                 goto free_vsi;
7581         pf = vsi->back;
7582
7583         mutex_lock(&pf->switch_mutex);
7584         if (!pf->vsi[vsi->idx]) {
7585                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7586                         vsi->idx, vsi->idx, vsi, vsi->type);
7587                 goto unlock_vsi;
7588         }
7589
7590         if (pf->vsi[vsi->idx] != vsi) {
7591                 dev_err(&pf->pdev->dev,
7592                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7593                         pf->vsi[vsi->idx]->idx,
7594                         pf->vsi[vsi->idx],
7595                         pf->vsi[vsi->idx]->type,
7596                         vsi->idx, vsi, vsi->type);
7597                 goto unlock_vsi;
7598         }
7599
7600         /* updates the PF for this cleared vsi */
7601         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7602         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7603
7604         i40e_vsi_free_arrays(vsi, true);
7605         i40e_clear_rss_config_user(vsi);
7606
7607         pf->vsi[vsi->idx] = NULL;
7608         if (vsi->idx < pf->next_vsi)
7609                 pf->next_vsi = vsi->idx;
7610
7611 unlock_vsi:
7612         mutex_unlock(&pf->switch_mutex);
7613 free_vsi:
7614         kfree(vsi);
7615
7616         return 0;
7617 }
7618
7619 /**
7620  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7621  * @vsi: the VSI being cleaned
7622  **/
7623 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7624 {
7625         int i;
7626
7627         if (vsi->tx_rings && vsi->tx_rings[0]) {
7628                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7629                         kfree_rcu(vsi->tx_rings[i], rcu);
7630                         vsi->tx_rings[i] = NULL;
7631                         vsi->rx_rings[i] = NULL;
7632                 }
7633         }
7634 }
7635
7636 /**
7637  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7638  * @vsi: the VSI being configured
7639  **/
7640 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7641 {
7642         struct i40e_ring *tx_ring, *rx_ring;
7643         struct i40e_pf *pf = vsi->back;
7644         int i;
7645
7646         /* Set basic values in the rings to be used later during open() */
7647         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7648                 /* allocate space for both Tx and Rx in one shot */
7649                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7650                 if (!tx_ring)
7651                         goto err_out;
7652
7653                 tx_ring->queue_index = i;
7654                 tx_ring->reg_idx = vsi->base_queue + i;
7655                 tx_ring->ring_active = false;
7656                 tx_ring->vsi = vsi;
7657                 tx_ring->netdev = vsi->netdev;
7658                 tx_ring->dev = &pf->pdev->dev;
7659                 tx_ring->count = vsi->num_desc;
7660                 tx_ring->size = 0;
7661                 tx_ring->dcb_tc = 0;
7662                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7663                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7664                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7665                 vsi->tx_rings[i] = tx_ring;
7666
7667                 rx_ring = &tx_ring[1];
7668                 rx_ring->queue_index = i;
7669                 rx_ring->reg_idx = vsi->base_queue + i;
7670                 rx_ring->ring_active = false;
7671                 rx_ring->vsi = vsi;
7672                 rx_ring->netdev = vsi->netdev;
7673                 rx_ring->dev = &pf->pdev->dev;
7674                 rx_ring->count = vsi->num_desc;
7675                 rx_ring->size = 0;
7676                 rx_ring->dcb_tc = 0;
7677                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7678                 vsi->rx_rings[i] = rx_ring;
7679         }
7680
7681         return 0;
7682
7683 err_out:
7684         i40e_vsi_clear_rings(vsi);
7685         return -ENOMEM;
7686 }
7687
7688 /**
7689  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7690  * @pf: board private structure
7691  * @vectors: the number of MSI-X vectors to request
7692  *
7693  * Returns the number of vectors reserved, or error
7694  **/
7695 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7696 {
7697         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7698                                         I40E_MIN_MSIX, vectors);
7699         if (vectors < 0) {
7700                 dev_info(&pf->pdev->dev,
7701                          "MSI-X vector reservation failed: %d\n", vectors);
7702                 vectors = 0;
7703         }
7704
7705         return vectors;
7706 }
7707
7708 /**
7709  * i40e_init_msix - Setup the MSIX capability
7710  * @pf: board private structure
7711  *
7712  * Work with the OS to set up the MSIX vectors needed.
7713  *
7714  * Returns the number of vectors reserved or negative on failure
7715  **/
7716 static int i40e_init_msix(struct i40e_pf *pf)
7717 {
7718         struct i40e_hw *hw = &pf->hw;
7719         int vectors_left;
7720         int v_budget, i;
7721         int v_actual;
7722         int iwarp_requested = 0;
7723
7724         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7725                 return -ENODEV;
7726
7727         /* The number of vectors we'll request will be comprised of:
7728          *   - Add 1 for "other" cause for Admin Queue events, etc.
7729          *   - The number of LAN queue pairs
7730          *      - Queues being used for RSS.
7731          *              We don't need as many as max_rss_size vectors.
7732          *              use rss_size instead in the calculation since that
7733          *              is governed by number of cpus in the system.
7734          *      - assumes symmetric Tx/Rx pairing
7735          *   - The number of VMDq pairs
7736          *   - The CPU count within the NUMA node if iWARP is enabled
7737 #ifdef I40E_FCOE
7738          *   - The number of FCOE qps.
7739 #endif
7740          * Once we count this up, try the request.
7741          *
7742          * If we can't get what we want, we'll simplify to nearly nothing
7743          * and try again.  If that still fails, we punt.
7744          */
7745         vectors_left = hw->func_caps.num_msix_vectors;
7746         v_budget = 0;
7747
7748         /* reserve one vector for miscellaneous handler */
7749         if (vectors_left) {
7750                 v_budget++;
7751                 vectors_left--;
7752         }
7753
7754         /* reserve vectors for the main PF traffic queues */
7755         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7756         vectors_left -= pf->num_lan_msix;
7757         v_budget += pf->num_lan_msix;
7758
7759         /* reserve one vector for sideband flow director */
7760         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7761                 if (vectors_left) {
7762                         pf->num_fdsb_msix = 1;
7763                         v_budget++;
7764                         vectors_left--;
7765                 } else {
7766                         pf->num_fdsb_msix = 0;
7767                 }
7768         }
7769
7770 #ifdef I40E_FCOE
7771         /* can we reserve enough for FCoE? */
7772         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7773                 if (!vectors_left)
7774                         pf->num_fcoe_msix = 0;
7775                 else if (vectors_left >= pf->num_fcoe_qps)
7776                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7777                 else
7778                         pf->num_fcoe_msix = 1;
7779                 v_budget += pf->num_fcoe_msix;
7780                 vectors_left -= pf->num_fcoe_msix;
7781         }
7782
7783 #endif
7784         /* can we reserve enough for iWARP? */
7785         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7786                 iwarp_requested = pf->num_iwarp_msix;
7787
7788                 if (!vectors_left)
7789                         pf->num_iwarp_msix = 0;
7790                 else if (vectors_left < pf->num_iwarp_msix)
7791                         pf->num_iwarp_msix = 1;
7792                 v_budget += pf->num_iwarp_msix;
7793                 vectors_left -= pf->num_iwarp_msix;
7794         }
7795
7796         /* any vectors left over go for VMDq support */
7797         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7798                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7799                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7800
7801                 if (!vectors_left) {
7802                         pf->num_vmdq_msix = 0;
7803                         pf->num_vmdq_qps = 0;
7804                 } else {
7805                         /* if we're short on vectors for what's desired, we limit
7806                          * the queues per vmdq.  If this is still more than are
7807                          * available, the user will need to change the number of
7808                          * queues/vectors used by the PF later with the ethtool
7809                          * channels command
7810                          */
7811                         if (vmdq_vecs < vmdq_vecs_wanted)
7812                                 pf->num_vmdq_qps = 1;
7813                         pf->num_vmdq_msix = pf->num_vmdq_qps;
7814
7815                         v_budget += vmdq_vecs;
7816                         vectors_left -= vmdq_vecs;
7817                 }
7818         }
7819
7820         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7821                                    GFP_KERNEL);
7822         if (!pf->msix_entries)
7823                 return -ENOMEM;
7824
7825         for (i = 0; i < v_budget; i++)
7826                 pf->msix_entries[i].entry = i;
7827         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7828
7829         if (v_actual < I40E_MIN_MSIX) {
7830                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7831                 kfree(pf->msix_entries);
7832                 pf->msix_entries = NULL;
7833                 pci_disable_msix(pf->pdev);
7834                 return -ENODEV;
7835
7836         } else if (v_actual == I40E_MIN_MSIX) {
7837                 /* Adjust for minimal MSIX use */
7838                 pf->num_vmdq_vsis = 0;
7839                 pf->num_vmdq_qps = 0;
7840                 pf->num_lan_qps = 1;
7841                 pf->num_lan_msix = 1;
7842
7843         } else if (!vectors_left) {
7844                 /* If we have limited resources, we will start with no vectors
7845                  * for the special features and then allocate vectors to some
7846                  * of these features based on the policy and at the end disable
7847                  * the features that did not get any vectors.
7848                  */
7849                 int vec;
7850
7851                 dev_info(&pf->pdev->dev,
7852                          "MSI-X vector limit reached, attempting to redistribute vectors\n");
7853                 /* reserve the misc vector */
7854                 vec = v_actual - 1;
7855
7856                 /* Scale vector usage down */
7857                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7858                 pf->num_vmdq_vsis = 1;
7859                 pf->num_vmdq_qps = 1;
7860 #ifdef I40E_FCOE
7861                 pf->num_fcoe_qps = 0;
7862                 pf->num_fcoe_msix = 0;
7863 #endif
7864
7865                 /* partition out the remaining vectors */
7866                 switch (vec) {
7867                 case 2:
7868                         pf->num_lan_msix = 1;
7869                         break;
7870                 case 3:
7871                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7872                                 pf->num_lan_msix = 1;
7873                                 pf->num_iwarp_msix = 1;
7874                         } else {
7875                                 pf->num_lan_msix = 2;
7876                         }
7877 #ifdef I40E_FCOE
7878                         /* give one vector to FCoE */
7879                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7880                                 pf->num_lan_msix = 1;
7881                                 pf->num_fcoe_msix = 1;
7882                         }
7883 #endif
7884                         break;
7885                 default:
7886                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7887                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7888                                                  iwarp_requested);
7889                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7890                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7891                         } else {
7892                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7893                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7894                         }
7895                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7896                                 pf->num_fdsb_msix = 1;
7897                                 vec--;
7898                         }
7899                         pf->num_lan_msix = min_t(int,
7900                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7901                                                               pf->num_lan_msix);
7902                         pf->num_lan_qps = pf->num_lan_msix;
7903 #ifdef I40E_FCOE
7904                         /* give one vector to FCoE */
7905                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7906                                 pf->num_fcoe_msix = 1;
7907                                 vec--;
7908                         }
7909 #endif
7910                         break;
7911                 }
7912         }
7913
7914         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
7915             (pf->num_fdsb_msix == 0)) {
7916                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
7917                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7918         }
7919         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7920             (pf->num_vmdq_msix == 0)) {
7921                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7922                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7923         }
7924
7925         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7926             (pf->num_iwarp_msix == 0)) {
7927                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7928                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7929         }
7930 #ifdef I40E_FCOE
7931
7932         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7933                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7934                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7935         }
7936 #endif
7937         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
7938                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
7939                    pf->num_lan_msix,
7940                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
7941                    pf->num_fdsb_msix,
7942                    pf->num_iwarp_msix);
7943
7944         return v_actual;
7945 }
7946
7947 /**
7948  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7949  * @vsi: the VSI being configured
7950  * @v_idx: index of the vector in the vsi struct
7951  * @cpu: cpu to be used on affinity_mask
7952  *
7953  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7954  **/
7955 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7956 {
7957         struct i40e_q_vector *q_vector;
7958
7959         /* allocate q_vector */
7960         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7961         if (!q_vector)
7962                 return -ENOMEM;
7963
7964         q_vector->vsi = vsi;
7965         q_vector->v_idx = v_idx;
7966         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7967
7968         if (vsi->netdev)
7969                 netif_napi_add(vsi->netdev, &q_vector->napi,
7970                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7971
7972         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7973         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7974
7975         /* tie q_vector and vsi together */
7976         vsi->q_vectors[v_idx] = q_vector;
7977
7978         return 0;
7979 }
7980
7981 /**
7982  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7983  * @vsi: the VSI being configured
7984  *
7985  * We allocate one q_vector per queue interrupt.  If allocation fails we
7986  * return -ENOMEM.
7987  **/
7988 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7989 {
7990         struct i40e_pf *pf = vsi->back;
7991         int err, v_idx, num_q_vectors, current_cpu;
7992
7993         /* if not MSIX, give the one vector only to the LAN VSI */
7994         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7995                 num_q_vectors = vsi->num_q_vectors;
7996         else if (vsi == pf->vsi[pf->lan_vsi])
7997                 num_q_vectors = 1;
7998         else
7999                 return -EINVAL;
8000
8001         current_cpu = cpumask_first(cpu_online_mask);
8002
8003         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
8004                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
8005                 if (err)
8006                         goto err_out;
8007                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
8008                 if (unlikely(current_cpu >= nr_cpu_ids))
8009                         current_cpu = cpumask_first(cpu_online_mask);
8010         }
8011
8012         return 0;
8013
8014 err_out:
8015         while (v_idx--)
8016                 i40e_free_q_vector(vsi, v_idx);
8017
8018         return err;
8019 }
8020
8021 /**
8022  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
8023  * @pf: board private structure to initialize
8024  **/
8025 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
8026 {
8027         int vectors = 0;
8028         ssize_t size;
8029
8030         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8031                 vectors = i40e_init_msix(pf);
8032                 if (vectors < 0) {
8033                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
8034                                        I40E_FLAG_IWARP_ENABLED  |
8035 #ifdef I40E_FCOE
8036                                        I40E_FLAG_FCOE_ENABLED   |
8037 #endif
8038                                        I40E_FLAG_RSS_ENABLED    |
8039                                        I40E_FLAG_DCB_CAPABLE    |
8040                                        I40E_FLAG_DCB_ENABLED    |
8041                                        I40E_FLAG_SRIOV_ENABLED  |
8042                                        I40E_FLAG_FD_SB_ENABLED  |
8043                                        I40E_FLAG_FD_ATR_ENABLED |
8044                                        I40E_FLAG_VMDQ_ENABLED);
8045
8046                         /* rework the queue expectations without MSIX */
8047                         i40e_determine_queue_usage(pf);
8048                 }
8049         }
8050
8051         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8052             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
8053                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
8054                 vectors = pci_enable_msi(pf->pdev);
8055                 if (vectors < 0) {
8056                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
8057                                  vectors);
8058                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
8059                 }
8060                 vectors = 1;  /* one MSI or Legacy vector */
8061         }
8062
8063         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
8064                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
8065
8066         /* set up vector assignment tracking */
8067         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
8068         pf->irq_pile = kzalloc(size, GFP_KERNEL);
8069         if (!pf->irq_pile) {
8070                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
8071                 return -ENOMEM;
8072         }
8073         pf->irq_pile->num_entries = vectors;
8074         pf->irq_pile->search_hint = 0;
8075
8076         /* track first vector for misc interrupts, ignore return */
8077         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
8078
8079         return 0;
8080 }
8081
8082 /**
8083  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
8084  * @pf: board private structure
8085  *
8086  * This sets up the handler for MSIX 0, which is used to manage the
8087  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
8088  * when in MSI or Legacy interrupt mode.
8089  **/
8090 static int i40e_setup_misc_vector(struct i40e_pf *pf)
8091 {
8092         struct i40e_hw *hw = &pf->hw;
8093         int err = 0;
8094
8095         /* Only request the irq if this is the first time through, and
8096          * not when we're rebuilding after a Reset
8097          */
8098         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
8099                 err = request_irq(pf->msix_entries[0].vector,
8100                                   i40e_intr, 0, pf->int_name, pf);
8101                 if (err) {
8102                         dev_info(&pf->pdev->dev,
8103                                  "request_irq for %s failed: %d\n",
8104                                  pf->int_name, err);
8105                         return -EFAULT;
8106                 }
8107         }
8108
8109         i40e_enable_misc_int_causes(pf);
8110
8111         /* associate no queues to the misc vector */
8112         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
8113         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
8114
8115         i40e_flush(hw);
8116
8117         i40e_irq_dynamic_enable_icr0(pf, true);
8118
8119         return err;
8120 }
8121
8122 /**
8123  * i40e_config_rss_aq - Prepare for RSS using AQ commands
8124  * @vsi: vsi structure
8125  * @seed: RSS hash seed
8126  **/
8127 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8128                               u8 *lut, u16 lut_size)
8129 {
8130         struct i40e_pf *pf = vsi->back;
8131         struct i40e_hw *hw = &pf->hw;
8132         int ret = 0;
8133
8134         if (seed) {
8135                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
8136                         (struct i40e_aqc_get_set_rss_key_data *)seed;
8137                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
8138                 if (ret) {
8139                         dev_info(&pf->pdev->dev,
8140                                  "Cannot set RSS key, err %s aq_err %s\n",
8141                                  i40e_stat_str(hw, ret),
8142                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8143                         return ret;
8144                 }
8145         }
8146         if (lut) {
8147                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8148
8149                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8150                 if (ret) {
8151                         dev_info(&pf->pdev->dev,
8152                                  "Cannot set RSS lut, err %s aq_err %s\n",
8153                                  i40e_stat_str(hw, ret),
8154                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8155                         return ret;
8156                 }
8157         }
8158         return ret;
8159 }
8160
8161 /**
8162  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8163  * @vsi: Pointer to vsi structure
8164  * @seed: Buffter to store the hash keys
8165  * @lut: Buffer to store the lookup table entries
8166  * @lut_size: Size of buffer to store the lookup table entries
8167  *
8168  * Return 0 on success, negative on failure
8169  */
8170 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8171                            u8 *lut, u16 lut_size)
8172 {
8173         struct i40e_pf *pf = vsi->back;
8174         struct i40e_hw *hw = &pf->hw;
8175         int ret = 0;
8176
8177         if (seed) {
8178                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8179                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8180                 if (ret) {
8181                         dev_info(&pf->pdev->dev,
8182                                  "Cannot get RSS key, err %s aq_err %s\n",
8183                                  i40e_stat_str(&pf->hw, ret),
8184                                  i40e_aq_str(&pf->hw,
8185                                              pf->hw.aq.asq_last_status));
8186                         return ret;
8187                 }
8188         }
8189
8190         if (lut) {
8191                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8192
8193                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8194                 if (ret) {
8195                         dev_info(&pf->pdev->dev,
8196                                  "Cannot get RSS lut, err %s aq_err %s\n",
8197                                  i40e_stat_str(&pf->hw, ret),
8198                                  i40e_aq_str(&pf->hw,
8199                                              pf->hw.aq.asq_last_status));
8200                         return ret;
8201                 }
8202         }
8203
8204         return ret;
8205 }
8206
8207 /**
8208  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8209  * @vsi: VSI structure
8210  **/
8211 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8212 {
8213         u8 seed[I40E_HKEY_ARRAY_SIZE];
8214         struct i40e_pf *pf = vsi->back;
8215         u8 *lut;
8216         int ret;
8217
8218         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8219                 return 0;
8220
8221         if (!vsi->rss_size)
8222                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8223                                       vsi->num_queue_pairs);
8224         if (!vsi->rss_size)
8225                 return -EINVAL;
8226
8227         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8228         if (!lut)
8229                 return -ENOMEM;
8230         /* Use the user configured hash keys and lookup table if there is one,
8231          * otherwise use default
8232          */
8233         if (vsi->rss_lut_user)
8234                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8235         else
8236                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8237         if (vsi->rss_hkey_user)
8238                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8239         else
8240                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8241         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8242         kfree(lut);
8243
8244         return ret;
8245 }
8246
8247 /**
8248  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8249  * @vsi: Pointer to vsi structure
8250  * @seed: RSS hash seed
8251  * @lut: Lookup table
8252  * @lut_size: Lookup table size
8253  *
8254  * Returns 0 on success, negative on failure
8255  **/
8256 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8257                                const u8 *lut, u16 lut_size)
8258 {
8259         struct i40e_pf *pf = vsi->back;
8260         struct i40e_hw *hw = &pf->hw;
8261         u16 vf_id = vsi->vf_id;
8262         u8 i;
8263
8264         /* Fill out hash function seed */
8265         if (seed) {
8266                 u32 *seed_dw = (u32 *)seed;
8267
8268                 if (vsi->type == I40E_VSI_MAIN) {
8269                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8270                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8271                                                   seed_dw[i]);
8272                 } else if (vsi->type == I40E_VSI_SRIOV) {
8273                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8274                                 i40e_write_rx_ctl(hw,
8275                                                   I40E_VFQF_HKEY1(i, vf_id),
8276                                                   seed_dw[i]);
8277                 } else {
8278                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8279                 }
8280         }
8281
8282         if (lut) {
8283                 u32 *lut_dw = (u32 *)lut;
8284
8285                 if (vsi->type == I40E_VSI_MAIN) {
8286                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8287                                 return -EINVAL;
8288                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8289                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8290                 } else if (vsi->type == I40E_VSI_SRIOV) {
8291                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8292                                 return -EINVAL;
8293                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8294                                 i40e_write_rx_ctl(hw,
8295                                                   I40E_VFQF_HLUT1(i, vf_id),
8296                                                   lut_dw[i]);
8297                 } else {
8298                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8299                 }
8300         }
8301         i40e_flush(hw);
8302
8303         return 0;
8304 }
8305
8306 /**
8307  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8308  * @vsi: Pointer to VSI structure
8309  * @seed: Buffer to store the keys
8310  * @lut: Buffer to store the lookup table entries
8311  * @lut_size: Size of buffer to store the lookup table entries
8312  *
8313  * Returns 0 on success, negative on failure
8314  */
8315 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8316                             u8 *lut, u16 lut_size)
8317 {
8318         struct i40e_pf *pf = vsi->back;
8319         struct i40e_hw *hw = &pf->hw;
8320         u16 i;
8321
8322         if (seed) {
8323                 u32 *seed_dw = (u32 *)seed;
8324
8325                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8326                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8327         }
8328         if (lut) {
8329                 u32 *lut_dw = (u32 *)lut;
8330
8331                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8332                         return -EINVAL;
8333                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8334                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8335         }
8336
8337         return 0;
8338 }
8339
8340 /**
8341  * i40e_config_rss - Configure RSS keys and lut
8342  * @vsi: Pointer to VSI structure
8343  * @seed: RSS hash seed
8344  * @lut: Lookup table
8345  * @lut_size: Lookup table size
8346  *
8347  * Returns 0 on success, negative on failure
8348  */
8349 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8350 {
8351         struct i40e_pf *pf = vsi->back;
8352
8353         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8354                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8355         else
8356                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8357 }
8358
8359 /**
8360  * i40e_get_rss - Get RSS keys and lut
8361  * @vsi: Pointer to VSI structure
8362  * @seed: Buffer to store the keys
8363  * @lut: Buffer to store the lookup table entries
8364  * lut_size: Size of buffer to store the lookup table entries
8365  *
8366  * Returns 0 on success, negative on failure
8367  */
8368 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8369 {
8370         struct i40e_pf *pf = vsi->back;
8371
8372         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8373                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8374         else
8375                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8376 }
8377
8378 /**
8379  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8380  * @pf: Pointer to board private structure
8381  * @lut: Lookup table
8382  * @rss_table_size: Lookup table size
8383  * @rss_size: Range of queue number for hashing
8384  */
8385 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8386                        u16 rss_table_size, u16 rss_size)
8387 {
8388         u16 i;
8389
8390         for (i = 0; i < rss_table_size; i++)
8391                 lut[i] = i % rss_size;
8392 }
8393
8394 /**
8395  * i40e_pf_config_rss - Prepare for RSS if used
8396  * @pf: board private structure
8397  **/
8398 static int i40e_pf_config_rss(struct i40e_pf *pf)
8399 {
8400         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8401         u8 seed[I40E_HKEY_ARRAY_SIZE];
8402         u8 *lut;
8403         struct i40e_hw *hw = &pf->hw;
8404         u32 reg_val;
8405         u64 hena;
8406         int ret;
8407
8408         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8409         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8410                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8411         hena |= i40e_pf_get_default_rss_hena(pf);
8412
8413         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8414         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8415
8416         /* Determine the RSS table size based on the hardware capabilities */
8417         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8418         reg_val = (pf->rss_table_size == 512) ?
8419                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8420                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8421         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8422
8423         /* Determine the RSS size of the VSI */
8424         if (!vsi->rss_size)
8425                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8426                                       vsi->num_queue_pairs);
8427         if (!vsi->rss_size)
8428                 return -EINVAL;
8429
8430         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8431         if (!lut)
8432                 return -ENOMEM;
8433
8434         /* Use user configured lut if there is one, otherwise use default */
8435         if (vsi->rss_lut_user)
8436                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8437         else
8438                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8439
8440         /* Use user configured hash key if there is one, otherwise
8441          * use default.
8442          */
8443         if (vsi->rss_hkey_user)
8444                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8445         else
8446                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8447         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8448         kfree(lut);
8449
8450         return ret;
8451 }
8452
8453 /**
8454  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8455  * @pf: board private structure
8456  * @queue_count: the requested queue count for rss.
8457  *
8458  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8459  * count which may be different from the requested queue count.
8460  **/
8461 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8462 {
8463         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8464         int new_rss_size;
8465
8466         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8467                 return 0;
8468
8469         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8470
8471         if (queue_count != vsi->num_queue_pairs) {
8472                 vsi->req_queue_pairs = queue_count;
8473                 i40e_prep_for_reset(pf);
8474
8475                 pf->alloc_rss_size = new_rss_size;
8476
8477                 i40e_reset_and_rebuild(pf, true);
8478
8479                 /* Discard the user configured hash keys and lut, if less
8480                  * queues are enabled.
8481                  */
8482                 if (queue_count < vsi->rss_size) {
8483                         i40e_clear_rss_config_user(vsi);
8484                         dev_dbg(&pf->pdev->dev,
8485                                 "discard user configured hash keys and lut\n");
8486                 }
8487
8488                 /* Reset vsi->rss_size, as number of enabled queues changed */
8489                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8490                                       vsi->num_queue_pairs);
8491
8492                 i40e_pf_config_rss(pf);
8493         }
8494         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
8495                  vsi->req_queue_pairs, pf->rss_size_max);
8496         return pf->alloc_rss_size;
8497 }
8498
8499 /**
8500  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8501  * @pf: board private structure
8502  **/
8503 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8504 {
8505         i40e_status status;
8506         bool min_valid, max_valid;
8507         u32 max_bw, min_bw;
8508
8509         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8510                                            &min_valid, &max_valid);
8511
8512         if (!status) {
8513                 if (min_valid)
8514                         pf->npar_min_bw = min_bw;
8515                 if (max_valid)
8516                         pf->npar_max_bw = max_bw;
8517         }
8518
8519         return status;
8520 }
8521
8522 /**
8523  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8524  * @pf: board private structure
8525  **/
8526 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8527 {
8528         struct i40e_aqc_configure_partition_bw_data bw_data;
8529         i40e_status status;
8530
8531         /* Set the valid bit for this PF */
8532         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8533         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8534         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8535
8536         /* Set the new bandwidths */
8537         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8538
8539         return status;
8540 }
8541
8542 /**
8543  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8544  * @pf: board private structure
8545  **/
8546 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8547 {
8548         /* Commit temporary BW setting to permanent NVM image */
8549         enum i40e_admin_queue_err last_aq_status;
8550         i40e_status ret;
8551         u16 nvm_word;
8552
8553         if (pf->hw.partition_id != 1) {
8554                 dev_info(&pf->pdev->dev,
8555                          "Commit BW only works on partition 1! This is partition %d",
8556                          pf->hw.partition_id);
8557                 ret = I40E_NOT_SUPPORTED;
8558                 goto bw_commit_out;
8559         }
8560
8561         /* Acquire NVM for read access */
8562         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8563         last_aq_status = pf->hw.aq.asq_last_status;
8564         if (ret) {
8565                 dev_info(&pf->pdev->dev,
8566                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8567                          i40e_stat_str(&pf->hw, ret),
8568                          i40e_aq_str(&pf->hw, last_aq_status));
8569                 goto bw_commit_out;
8570         }
8571
8572         /* Read word 0x10 of NVM - SW compatibility word 1 */
8573         ret = i40e_aq_read_nvm(&pf->hw,
8574                                I40E_SR_NVM_CONTROL_WORD,
8575                                0x10, sizeof(nvm_word), &nvm_word,
8576                                false, NULL);
8577         /* Save off last admin queue command status before releasing
8578          * the NVM
8579          */
8580         last_aq_status = pf->hw.aq.asq_last_status;
8581         i40e_release_nvm(&pf->hw);
8582         if (ret) {
8583                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8584                          i40e_stat_str(&pf->hw, ret),
8585                          i40e_aq_str(&pf->hw, last_aq_status));
8586                 goto bw_commit_out;
8587         }
8588
8589         /* Wait a bit for NVM release to complete */
8590         msleep(50);
8591
8592         /* Acquire NVM for write access */
8593         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8594         last_aq_status = pf->hw.aq.asq_last_status;
8595         if (ret) {
8596                 dev_info(&pf->pdev->dev,
8597                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8598                          i40e_stat_str(&pf->hw, ret),
8599                          i40e_aq_str(&pf->hw, last_aq_status));
8600                 goto bw_commit_out;
8601         }
8602         /* Write it back out unchanged to initiate update NVM,
8603          * which will force a write of the shadow (alt) RAM to
8604          * the NVM - thus storing the bandwidth values permanently.
8605          */
8606         ret = i40e_aq_update_nvm(&pf->hw,
8607                                  I40E_SR_NVM_CONTROL_WORD,
8608                                  0x10, sizeof(nvm_word),
8609                                  &nvm_word, true, NULL);
8610         /* Save off last admin queue command status before releasing
8611          * the NVM
8612          */
8613         last_aq_status = pf->hw.aq.asq_last_status;
8614         i40e_release_nvm(&pf->hw);
8615         if (ret)
8616                 dev_info(&pf->pdev->dev,
8617                          "BW settings NOT SAVED, err %s aq_err %s\n",
8618                          i40e_stat_str(&pf->hw, ret),
8619                          i40e_aq_str(&pf->hw, last_aq_status));
8620 bw_commit_out:
8621
8622         return ret;
8623 }
8624
8625 /**
8626  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8627  * @pf: board private structure to initialize
8628  *
8629  * i40e_sw_init initializes the Adapter private data structure.
8630  * Fields are initialized based on PCI device information and
8631  * OS network device settings (MTU size).
8632  **/
8633 static int i40e_sw_init(struct i40e_pf *pf)
8634 {
8635         int err = 0;
8636         int size;
8637
8638         /* Set default capability flags */
8639         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8640                     I40E_FLAG_MSI_ENABLED     |
8641                     I40E_FLAG_MSIX_ENABLED;
8642
8643         /* Set default ITR */
8644         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8645         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8646
8647         /* Depending on PF configurations, it is possible that the RSS
8648          * maximum might end up larger than the available queues
8649          */
8650         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8651         pf->alloc_rss_size = 1;
8652         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8653         pf->rss_size_max = min_t(int, pf->rss_size_max,
8654                                  pf->hw.func_caps.num_tx_qp);
8655         if (pf->hw.func_caps.rss) {
8656                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8657                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8658                                            num_online_cpus());
8659         }
8660
8661         /* MFP mode enabled */
8662         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8663                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8664                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8665                 if (i40e_get_npar_bw_setting(pf))
8666                         dev_warn(&pf->pdev->dev,
8667                                  "Could not get NPAR bw settings\n");
8668                 else
8669                         dev_info(&pf->pdev->dev,
8670                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8671                                  pf->npar_min_bw, pf->npar_max_bw);
8672         }
8673
8674         /* FW/NVM is not yet fixed in this regard */
8675         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8676             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8677                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8678                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8679                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8680                     pf->hw.num_partitions > 1)
8681                         dev_info(&pf->pdev->dev,
8682                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8683                 else
8684                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8685                 pf->fdir_pf_filter_count =
8686                                  pf->hw.func_caps.fd_filters_guaranteed;
8687                 pf->hw.fdir_shared_filter_count =
8688                                  pf->hw.func_caps.fd_filters_best_effort;
8689         }
8690
8691         if (i40e_is_mac_710(&pf->hw) &&
8692             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8693             (pf->hw.aq.fw_maj_ver < 4))) {
8694                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8695                 /* No DCB support  for FW < v4.33 */
8696                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8697         }
8698
8699         /* Disable FW LLDP if FW < v4.3 */
8700         if (i40e_is_mac_710(&pf->hw) &&
8701             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8702             (pf->hw.aq.fw_maj_ver < 4)))
8703                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8704
8705         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8706         if (i40e_is_mac_710(&pf->hw) &&
8707             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8708             (pf->hw.aq.fw_maj_ver >= 5)))
8709                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8710
8711         if (pf->hw.func_caps.vmdq) {
8712                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8713                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8714                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8715         }
8716
8717         if (pf->hw.func_caps.iwarp) {
8718                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8719                 /* IWARP needs one extra vector for CQP just like MISC.*/
8720                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8721         }
8722
8723 #ifdef I40E_FCOE
8724         i40e_init_pf_fcoe(pf);
8725
8726 #endif /* I40E_FCOE */
8727 #ifdef CONFIG_PCI_IOV
8728         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8729                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8730                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8731                 pf->num_req_vfs = min_t(int,
8732                                         pf->hw.func_caps.num_vfs,
8733                                         I40E_MAX_VF_COUNT);
8734         }
8735 #endif /* CONFIG_PCI_IOV */
8736         if (pf->hw.mac.type == I40E_MAC_X722) {
8737                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8738                              I40E_FLAG_128_QP_RSS_CAPABLE |
8739                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8740                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8741                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8742                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8743                              I40E_FLAG_NO_PCI_LINK_CHECK |
8744                              I40E_FLAG_USE_SET_LLDP_MIB |
8745                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE |
8746                              I40E_FLAG_PTP_L4_CAPABLE;
8747         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8748                    ((pf->hw.aq.api_maj_ver == 1) &&
8749                     (pf->hw.aq.api_min_ver > 4))) {
8750                 /* Supported in FW API version higher than 1.4 */
8751                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8752                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8753         } else {
8754                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8755         }
8756
8757         pf->eeprom_version = 0xDEAD;
8758         pf->lan_veb = I40E_NO_VEB;
8759         pf->lan_vsi = I40E_NO_VSI;
8760
8761         /* By default FW has this off for performance reasons */
8762         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8763
8764         /* set up queue assignment tracking */
8765         size = sizeof(struct i40e_lump_tracking)
8766                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8767         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8768         if (!pf->qp_pile) {
8769                 err = -ENOMEM;
8770                 goto sw_init_done;
8771         }
8772         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8773         pf->qp_pile->search_hint = 0;
8774
8775         pf->tx_timeout_recovery_level = 1;
8776
8777         mutex_init(&pf->switch_mutex);
8778
8779         /* If NPAR is enabled nudge the Tx scheduler */
8780         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8781                 i40e_set_npar_bw_setting(pf);
8782
8783 sw_init_done:
8784         return err;
8785 }
8786
8787 /**
8788  * i40e_set_ntuple - set the ntuple feature flag and take action
8789  * @pf: board private structure to initialize
8790  * @features: the feature set that the stack is suggesting
8791  *
8792  * returns a bool to indicate if reset needs to happen
8793  **/
8794 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8795 {
8796         bool need_reset = false;
8797
8798         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8799          * the state changed, we need to reset.
8800          */
8801         if (features & NETIF_F_NTUPLE) {
8802                 /* Enable filters and mark for reset */
8803                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8804                         need_reset = true;
8805                 /* enable FD_SB only if there is MSI-X vector */
8806                 if (pf->num_fdsb_msix > 0)
8807                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8808         } else {
8809                 /* turn off filters, mark for reset and clear SW filter list */
8810                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8811                         need_reset = true;
8812                         i40e_fdir_filter_exit(pf);
8813                 }
8814                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8815                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8816                 /* reset fd counters */
8817                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8818                 pf->fdir_pf_active_filters = 0;
8819                 /* if ATR was auto disabled it can be re-enabled. */
8820                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8821                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8822                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8823                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8824                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8825                 }
8826         }
8827         return need_reset;
8828 }
8829
8830 /**
8831  * i40e_clear_rss_lut - clear the rx hash lookup table
8832  * @vsi: the VSI being configured
8833  **/
8834 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8835 {
8836         struct i40e_pf *pf = vsi->back;
8837         struct i40e_hw *hw = &pf->hw;
8838         u16 vf_id = vsi->vf_id;
8839         u8 i;
8840
8841         if (vsi->type == I40E_VSI_MAIN) {
8842                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8843                         wr32(hw, I40E_PFQF_HLUT(i), 0);
8844         } else if (vsi->type == I40E_VSI_SRIOV) {
8845                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8846                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
8847         } else {
8848                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8849         }
8850 }
8851
8852 /**
8853  * i40e_set_features - set the netdev feature flags
8854  * @netdev: ptr to the netdev being adjusted
8855  * @features: the feature set that the stack is suggesting
8856  **/
8857 static int i40e_set_features(struct net_device *netdev,
8858                              netdev_features_t features)
8859 {
8860         struct i40e_netdev_priv *np = netdev_priv(netdev);
8861         struct i40e_vsi *vsi = np->vsi;
8862         struct i40e_pf *pf = vsi->back;
8863         bool need_reset;
8864
8865         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
8866                 i40e_pf_config_rss(pf);
8867         else if (!(features & NETIF_F_RXHASH) &&
8868                  netdev->features & NETIF_F_RXHASH)
8869                 i40e_clear_rss_lut(vsi);
8870
8871         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8872                 i40e_vlan_stripping_enable(vsi);
8873         else
8874                 i40e_vlan_stripping_disable(vsi);
8875
8876         need_reset = i40e_set_ntuple(pf, features);
8877
8878         if (need_reset)
8879                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8880
8881         return 0;
8882 }
8883
8884 /**
8885  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8886  * @pf: board private structure
8887  * @port: The UDP port to look up
8888  *
8889  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8890  **/
8891 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8892 {
8893         u8 i;
8894
8895         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8896                 if (pf->udp_ports[i].index == port)
8897                         return i;
8898         }
8899
8900         return i;
8901 }
8902
8903 /**
8904  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8905  * @netdev: This physical port's netdev
8906  * @ti: Tunnel endpoint information
8907  **/
8908 static void i40e_udp_tunnel_add(struct net_device *netdev,
8909                                 struct udp_tunnel_info *ti)
8910 {
8911         struct i40e_netdev_priv *np = netdev_priv(netdev);
8912         struct i40e_vsi *vsi = np->vsi;
8913         struct i40e_pf *pf = vsi->back;
8914         __be16 port = ti->port;
8915         u8 next_idx;
8916         u8 idx;
8917
8918         idx = i40e_get_udp_port_idx(pf, port);
8919
8920         /* Check if port already exists */
8921         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8922                 netdev_info(netdev, "port %d already offloaded\n",
8923                             ntohs(port));
8924                 return;
8925         }
8926
8927         /* Now check if there is space to add the new port */
8928         next_idx = i40e_get_udp_port_idx(pf, 0);
8929
8930         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8931                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8932                             ntohs(port));
8933                 return;
8934         }
8935
8936         switch (ti->type) {
8937         case UDP_TUNNEL_TYPE_VXLAN:
8938                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8939                 break;
8940         case UDP_TUNNEL_TYPE_GENEVE:
8941                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8942                         return;
8943                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8944                 break;
8945         default:
8946                 return;
8947         }
8948
8949         /* New port: add it and mark its index in the bitmap */
8950         pf->udp_ports[next_idx].index = port;
8951         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8952         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8953 }
8954
8955 /**
8956  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8957  * @netdev: This physical port's netdev
8958  * @ti: Tunnel endpoint information
8959  **/
8960 static void i40e_udp_tunnel_del(struct net_device *netdev,
8961                                 struct udp_tunnel_info *ti)
8962 {
8963         struct i40e_netdev_priv *np = netdev_priv(netdev);
8964         struct i40e_vsi *vsi = np->vsi;
8965         struct i40e_pf *pf = vsi->back;
8966         __be16 port = ti->port;
8967         u8 idx;
8968
8969         idx = i40e_get_udp_port_idx(pf, port);
8970
8971         /* Check if port already exists */
8972         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8973                 goto not_found;
8974
8975         switch (ti->type) {
8976         case UDP_TUNNEL_TYPE_VXLAN:
8977                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8978                         goto not_found;
8979                 break;
8980         case UDP_TUNNEL_TYPE_GENEVE:
8981                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8982                         goto not_found;
8983                 break;
8984         default:
8985                 goto not_found;
8986         }
8987
8988         /* if port exists, set it to 0 (mark for deletion)
8989          * and make it pending
8990          */
8991         pf->udp_ports[idx].index = 0;
8992         pf->pending_udp_bitmap |= BIT_ULL(idx);
8993         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8994
8995         return;
8996 not_found:
8997         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8998                     ntohs(port));
8999 }
9000
9001 static int i40e_get_phys_port_id(struct net_device *netdev,
9002                                  struct netdev_phys_item_id *ppid)
9003 {
9004         struct i40e_netdev_priv *np = netdev_priv(netdev);
9005         struct i40e_pf *pf = np->vsi->back;
9006         struct i40e_hw *hw = &pf->hw;
9007
9008         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
9009                 return -EOPNOTSUPP;
9010
9011         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
9012         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
9013
9014         return 0;
9015 }
9016
9017 /**
9018  * i40e_ndo_fdb_add - add an entry to the hardware database
9019  * @ndm: the input from the stack
9020  * @tb: pointer to array of nladdr (unused)
9021  * @dev: the net device pointer
9022  * @addr: the MAC address entry being added
9023  * @flags: instructions from stack about fdb operation
9024  */
9025 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
9026                             struct net_device *dev,
9027                             const unsigned char *addr, u16 vid,
9028                             u16 flags)
9029 {
9030         struct i40e_netdev_priv *np = netdev_priv(dev);
9031         struct i40e_pf *pf = np->vsi->back;
9032         int err = 0;
9033
9034         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
9035                 return -EOPNOTSUPP;
9036
9037         if (vid) {
9038                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
9039                 return -EINVAL;
9040         }
9041
9042         /* Hardware does not support aging addresses so if a
9043          * ndm_state is given only allow permanent addresses
9044          */
9045         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
9046                 netdev_info(dev, "FDB only supports static addresses\n");
9047                 return -EINVAL;
9048         }
9049
9050         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
9051                 err = dev_uc_add_excl(dev, addr);
9052         else if (is_multicast_ether_addr(addr))
9053                 err = dev_mc_add_excl(dev, addr);
9054         else
9055                 err = -EINVAL;
9056
9057         /* Only return duplicate errors if NLM_F_EXCL is set */
9058         if (err == -EEXIST && !(flags & NLM_F_EXCL))
9059                 err = 0;
9060
9061         return err;
9062 }
9063
9064 /**
9065  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
9066  * @dev: the netdev being configured
9067  * @nlh: RTNL message
9068  *
9069  * Inserts a new hardware bridge if not already created and
9070  * enables the bridging mode requested (VEB or VEPA). If the
9071  * hardware bridge has already been inserted and the request
9072  * is to change the mode then that requires a PF reset to
9073  * allow rebuild of the components with required hardware
9074  * bridge mode enabled.
9075  **/
9076 static int i40e_ndo_bridge_setlink(struct net_device *dev,
9077                                    struct nlmsghdr *nlh,
9078                                    u16 flags)
9079 {
9080         struct i40e_netdev_priv *np = netdev_priv(dev);
9081         struct i40e_vsi *vsi = np->vsi;
9082         struct i40e_pf *pf = vsi->back;
9083         struct i40e_veb *veb = NULL;
9084         struct nlattr *attr, *br_spec;
9085         int i, rem;
9086
9087         /* Only for PF VSI for now */
9088         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9089                 return -EOPNOTSUPP;
9090
9091         /* Find the HW bridge for PF VSI */
9092         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9093                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9094                         veb = pf->veb[i];
9095         }
9096
9097         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
9098
9099         nla_for_each_nested(attr, br_spec, rem) {
9100                 __u16 mode;
9101
9102                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
9103                         continue;
9104
9105                 mode = nla_get_u16(attr);
9106                 if ((mode != BRIDGE_MODE_VEPA) &&
9107                     (mode != BRIDGE_MODE_VEB))
9108                         return -EINVAL;
9109
9110                 /* Insert a new HW bridge */
9111                 if (!veb) {
9112                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9113                                              vsi->tc_config.enabled_tc);
9114                         if (veb) {
9115                                 veb->bridge_mode = mode;
9116                                 i40e_config_bridge_mode(veb);
9117                         } else {
9118                                 /* No Bridge HW offload available */
9119                                 return -ENOENT;
9120                         }
9121                         break;
9122                 } else if (mode != veb->bridge_mode) {
9123                         /* Existing HW bridge but different mode needs reset */
9124                         veb->bridge_mode = mode;
9125                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
9126                         if (mode == BRIDGE_MODE_VEB)
9127                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
9128                         else
9129                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9130                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
9131                         break;
9132                 }
9133         }
9134
9135         return 0;
9136 }
9137
9138 /**
9139  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9140  * @skb: skb buff
9141  * @pid: process id
9142  * @seq: RTNL message seq #
9143  * @dev: the netdev being configured
9144  * @filter_mask: unused
9145  * @nlflags: netlink flags passed in
9146  *
9147  * Return the mode in which the hardware bridge is operating in
9148  * i.e VEB or VEPA.
9149  **/
9150 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9151                                    struct net_device *dev,
9152                                    u32 __always_unused filter_mask,
9153                                    int nlflags)
9154 {
9155         struct i40e_netdev_priv *np = netdev_priv(dev);
9156         struct i40e_vsi *vsi = np->vsi;
9157         struct i40e_pf *pf = vsi->back;
9158         struct i40e_veb *veb = NULL;
9159         int i;
9160
9161         /* Only for PF VSI for now */
9162         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9163                 return -EOPNOTSUPP;
9164
9165         /* Find the HW bridge for the PF VSI */
9166         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9167                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9168                         veb = pf->veb[i];
9169         }
9170
9171         if (!veb)
9172                 return 0;
9173
9174         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9175                                        0, 0, nlflags, filter_mask, NULL);
9176 }
9177
9178 /**
9179  * i40e_features_check - Validate encapsulated packet conforms to limits
9180  * @skb: skb buff
9181  * @dev: This physical port's netdev
9182  * @features: Offload features that the stack believes apply
9183  **/
9184 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9185                                              struct net_device *dev,
9186                                              netdev_features_t features)
9187 {
9188         size_t len;
9189
9190         /* No point in doing any of this if neither checksum nor GSO are
9191          * being requested for this frame.  We can rule out both by just
9192          * checking for CHECKSUM_PARTIAL
9193          */
9194         if (skb->ip_summed != CHECKSUM_PARTIAL)
9195                 return features;
9196
9197         /* We cannot support GSO if the MSS is going to be less than
9198          * 64 bytes.  If it is then we need to drop support for GSO.
9199          */
9200         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
9201                 features &= ~NETIF_F_GSO_MASK;
9202
9203         /* MACLEN can support at most 63 words */
9204         len = skb_network_header(skb) - skb->data;
9205         if (len & ~(63 * 2))
9206                 goto out_err;
9207
9208         /* IPLEN and EIPLEN can support at most 127 dwords */
9209         len = skb_transport_header(skb) - skb_network_header(skb);
9210         if (len & ~(127 * 4))
9211                 goto out_err;
9212
9213         if (skb->encapsulation) {
9214                 /* L4TUNLEN can support 127 words */
9215                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
9216                 if (len & ~(127 * 2))
9217                         goto out_err;
9218
9219                 /* IPLEN can support at most 127 dwords */
9220                 len = skb_inner_transport_header(skb) -
9221                       skb_inner_network_header(skb);
9222                 if (len & ~(127 * 4))
9223                         goto out_err;
9224         }
9225
9226         /* No need to validate L4LEN as TCP is the only protocol with a
9227          * a flexible value and we support all possible values supported
9228          * by TCP, which is at most 15 dwords
9229          */
9230
9231         return features;
9232 out_err:
9233         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9234 }
9235
9236 static const struct net_device_ops i40e_netdev_ops = {
9237         .ndo_open               = i40e_open,
9238         .ndo_stop               = i40e_close,
9239         .ndo_start_xmit         = i40e_lan_xmit_frame,
9240         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9241         .ndo_set_rx_mode        = i40e_set_rx_mode,
9242         .ndo_validate_addr      = eth_validate_addr,
9243         .ndo_set_mac_address    = i40e_set_mac,
9244         .ndo_change_mtu         = i40e_change_mtu,
9245         .ndo_do_ioctl           = i40e_ioctl,
9246         .ndo_tx_timeout         = i40e_tx_timeout,
9247         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9248         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9249 #ifdef CONFIG_NET_POLL_CONTROLLER
9250         .ndo_poll_controller    = i40e_netpoll,
9251 #endif
9252         .ndo_setup_tc           = __i40e_setup_tc,
9253 #ifdef I40E_FCOE
9254         .ndo_fcoe_enable        = i40e_fcoe_enable,
9255         .ndo_fcoe_disable       = i40e_fcoe_disable,
9256 #endif
9257         .ndo_set_features       = i40e_set_features,
9258         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9259         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9260         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9261         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9262         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9263         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9264         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9265         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9266         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9267         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9268         .ndo_fdb_add            = i40e_ndo_fdb_add,
9269         .ndo_features_check     = i40e_features_check,
9270         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9271         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9272 };
9273
9274 /**
9275  * i40e_config_netdev - Setup the netdev flags
9276  * @vsi: the VSI being configured
9277  *
9278  * Returns 0 on success, negative value on failure
9279  **/
9280 static int i40e_config_netdev(struct i40e_vsi *vsi)
9281 {
9282         struct i40e_pf *pf = vsi->back;
9283         struct i40e_hw *hw = &pf->hw;
9284         struct i40e_netdev_priv *np;
9285         struct net_device *netdev;
9286         u8 broadcast[ETH_ALEN];
9287         u8 mac_addr[ETH_ALEN];
9288         int etherdev_size;
9289
9290         etherdev_size = sizeof(struct i40e_netdev_priv);
9291         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9292         if (!netdev)
9293                 return -ENOMEM;
9294
9295         vsi->netdev = netdev;
9296         np = netdev_priv(netdev);
9297         np->vsi = vsi;
9298
9299         netdev->hw_enc_features |= NETIF_F_SG                   |
9300                                    NETIF_F_IP_CSUM              |
9301                                    NETIF_F_IPV6_CSUM            |
9302                                    NETIF_F_HIGHDMA              |
9303                                    NETIF_F_SOFT_FEATURES        |
9304                                    NETIF_F_TSO                  |
9305                                    NETIF_F_TSO_ECN              |
9306                                    NETIF_F_TSO6                 |
9307                                    NETIF_F_GSO_GRE              |
9308                                    NETIF_F_GSO_GRE_CSUM         |
9309                                    NETIF_F_GSO_IPXIP4           |
9310                                    NETIF_F_GSO_IPXIP6           |
9311                                    NETIF_F_GSO_UDP_TUNNEL       |
9312                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9313                                    NETIF_F_GSO_PARTIAL          |
9314                                    NETIF_F_SCTP_CRC             |
9315                                    NETIF_F_RXHASH               |
9316                                    NETIF_F_RXCSUM               |
9317                                    0;
9318
9319         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9320                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9321
9322         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9323
9324         /* record features VLANs can make use of */
9325         netdev->vlan_features |= netdev->hw_enc_features |
9326                                  NETIF_F_TSO_MANGLEID;
9327
9328         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9329                 netdev->hw_features |= NETIF_F_NTUPLE;
9330
9331         netdev->hw_features |= netdev->hw_enc_features  |
9332                                NETIF_F_HW_VLAN_CTAG_TX  |
9333                                NETIF_F_HW_VLAN_CTAG_RX;
9334
9335         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9336         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9337
9338         if (vsi->type == I40E_VSI_MAIN) {
9339                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9340                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9341                 /* The following steps are necessary to prevent reception
9342                  * of tagged packets - some older NVM configurations load a
9343                  * default a MAC-VLAN filter that accepts any tagged packet
9344                  * which must be replaced by a normal filter.
9345                  */
9346                 i40e_rm_default_mac_filter(vsi, mac_addr);
9347                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9348                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY);
9349                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9350         } else {
9351                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9352                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9353                          pf->vsi[pf->lan_vsi]->netdev->name);
9354                 random_ether_addr(mac_addr);
9355
9356                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9357                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY);
9358                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9359         }
9360
9361         /* Add the broadcast filter so that we initially will receive
9362          * broadcast packets. Note that when a new VLAN is first added the
9363          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
9364          * specific filters as part of transitioning into "vlan" operation.
9365          * When more VLANs are added, the driver will copy each existing MAC
9366          * filter and add it for the new VLAN.
9367          *
9368          * Broadcast filters are handled specially by
9369          * i40e_sync_filters_subtask, as the driver must to set the broadcast
9370          * promiscuous bit instead of adding this directly as a MAC/VLAN
9371          * filter. The subtask will update the correct broadcast promiscuous
9372          * bits as VLANs become active or inactive.
9373          */
9374         eth_broadcast_addr(broadcast);
9375         spin_lock_bh(&vsi->mac_filter_hash_lock);
9376         i40e_add_filter(vsi, broadcast, I40E_VLAN_ANY);
9377         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9378
9379         ether_addr_copy(netdev->dev_addr, mac_addr);
9380         ether_addr_copy(netdev->perm_addr, mac_addr);
9381
9382         netdev->priv_flags |= IFF_UNICAST_FLT;
9383         netdev->priv_flags |= IFF_SUPP_NOFCS;
9384         /* Setup netdev TC information */
9385         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9386
9387         netdev->netdev_ops = &i40e_netdev_ops;
9388         netdev->watchdog_timeo = 5 * HZ;
9389         i40e_set_ethtool_ops(netdev);
9390 #ifdef I40E_FCOE
9391         i40e_fcoe_config_netdev(netdev, vsi);
9392 #endif
9393
9394         /* MTU range: 68 - 9706 */
9395         netdev->min_mtu = ETH_MIN_MTU;
9396         netdev->max_mtu = I40E_MAX_RXBUFFER -
9397                           (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
9398
9399         return 0;
9400 }
9401
9402 /**
9403  * i40e_vsi_delete - Delete a VSI from the switch
9404  * @vsi: the VSI being removed
9405  *
9406  * Returns 0 on success, negative value on failure
9407  **/
9408 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9409 {
9410         /* remove default VSI is not allowed */
9411         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9412                 return;
9413
9414         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9415 }
9416
9417 /**
9418  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9419  * @vsi: the VSI being queried
9420  *
9421  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9422  **/
9423 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9424 {
9425         struct i40e_veb *veb;
9426         struct i40e_pf *pf = vsi->back;
9427
9428         /* Uplink is not a bridge so default to VEB */
9429         if (vsi->veb_idx == I40E_NO_VEB)
9430                 return 1;
9431
9432         veb = pf->veb[vsi->veb_idx];
9433         if (!veb) {
9434                 dev_info(&pf->pdev->dev,
9435                          "There is no veb associated with the bridge\n");
9436                 return -ENOENT;
9437         }
9438
9439         /* Uplink is a bridge in VEPA mode */
9440         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9441                 return 0;
9442         } else {
9443                 /* Uplink is a bridge in VEB mode */
9444                 return 1;
9445         }
9446
9447         /* VEPA is now default bridge, so return 0 */
9448         return 0;
9449 }
9450
9451 /**
9452  * i40e_add_vsi - Add a VSI to the switch
9453  * @vsi: the VSI being configured
9454  *
9455  * This initializes a VSI context depending on the VSI type to be added and
9456  * passes it down to the add_vsi aq command.
9457  **/
9458 static int i40e_add_vsi(struct i40e_vsi *vsi)
9459 {
9460         int ret = -ENODEV;
9461         struct i40e_pf *pf = vsi->back;
9462         struct i40e_hw *hw = &pf->hw;
9463         struct i40e_vsi_context ctxt;
9464         struct i40e_mac_filter *f;
9465         struct hlist_node *h;
9466         int bkt;
9467
9468         u8 enabled_tc = 0x1; /* TC0 enabled */
9469         int f_count = 0;
9470
9471         memset(&ctxt, 0, sizeof(ctxt));
9472         switch (vsi->type) {
9473         case I40E_VSI_MAIN:
9474                 /* The PF's main VSI is already setup as part of the
9475                  * device initialization, so we'll not bother with
9476                  * the add_vsi call, but we will retrieve the current
9477                  * VSI context.
9478                  */
9479                 ctxt.seid = pf->main_vsi_seid;
9480                 ctxt.pf_num = pf->hw.pf_id;
9481                 ctxt.vf_num = 0;
9482                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9483                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9484                 if (ret) {
9485                         dev_info(&pf->pdev->dev,
9486                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9487                                  i40e_stat_str(&pf->hw, ret),
9488                                  i40e_aq_str(&pf->hw,
9489                                              pf->hw.aq.asq_last_status));
9490                         return -ENOENT;
9491                 }
9492                 vsi->info = ctxt.info;
9493                 vsi->info.valid_sections = 0;
9494
9495                 vsi->seid = ctxt.seid;
9496                 vsi->id = ctxt.vsi_number;
9497
9498                 enabled_tc = i40e_pf_get_tc_map(pf);
9499
9500                 /* MFP mode setup queue map and update VSI */
9501                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9502                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9503                         memset(&ctxt, 0, sizeof(ctxt));
9504                         ctxt.seid = pf->main_vsi_seid;
9505                         ctxt.pf_num = pf->hw.pf_id;
9506                         ctxt.vf_num = 0;
9507                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9508                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9509                         if (ret) {
9510                                 dev_info(&pf->pdev->dev,
9511                                          "update vsi failed, err %s aq_err %s\n",
9512                                          i40e_stat_str(&pf->hw, ret),
9513                                          i40e_aq_str(&pf->hw,
9514                                                     pf->hw.aq.asq_last_status));
9515                                 ret = -ENOENT;
9516                                 goto err;
9517                         }
9518                         /* update the local VSI info queue map */
9519                         i40e_vsi_update_queue_map(vsi, &ctxt);
9520                         vsi->info.valid_sections = 0;
9521                 } else {
9522                         /* Default/Main VSI is only enabled for TC0
9523                          * reconfigure it to enable all TCs that are
9524                          * available on the port in SFP mode.
9525                          * For MFP case the iSCSI PF would use this
9526                          * flow to enable LAN+iSCSI TC.
9527                          */
9528                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9529                         if (ret) {
9530                                 dev_info(&pf->pdev->dev,
9531                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9532                                          enabled_tc,
9533                                          i40e_stat_str(&pf->hw, ret),
9534                                          i40e_aq_str(&pf->hw,
9535                                                     pf->hw.aq.asq_last_status));
9536                                 ret = -ENOENT;
9537                         }
9538                 }
9539                 break;
9540
9541         case I40E_VSI_FDIR:
9542                 ctxt.pf_num = hw->pf_id;
9543                 ctxt.vf_num = 0;
9544                 ctxt.uplink_seid = vsi->uplink_seid;
9545                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9546                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9547                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9548                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9549                         ctxt.info.valid_sections |=
9550                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9551                         ctxt.info.switch_id =
9552                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9553                 }
9554                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9555                 break;
9556
9557         case I40E_VSI_VMDQ2:
9558                 ctxt.pf_num = hw->pf_id;
9559                 ctxt.vf_num = 0;
9560                 ctxt.uplink_seid = vsi->uplink_seid;
9561                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9562                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9563
9564                 /* This VSI is connected to VEB so the switch_id
9565                  * should be set to zero by default.
9566                  */
9567                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9568                         ctxt.info.valid_sections |=
9569                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9570                         ctxt.info.switch_id =
9571                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9572                 }
9573
9574                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9575                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9576                 break;
9577
9578         case I40E_VSI_SRIOV:
9579                 ctxt.pf_num = hw->pf_id;
9580                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9581                 ctxt.uplink_seid = vsi->uplink_seid;
9582                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9583                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9584
9585                 /* This VSI is connected to VEB so the switch_id
9586                  * should be set to zero by default.
9587                  */
9588                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9589                         ctxt.info.valid_sections |=
9590                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9591                         ctxt.info.switch_id =
9592                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9593                 }
9594
9595                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9596                         ctxt.info.valid_sections |=
9597                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9598                         ctxt.info.queueing_opt_flags |=
9599                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9600                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9601                 }
9602
9603                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9604                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9605                 if (pf->vf[vsi->vf_id].spoofchk) {
9606                         ctxt.info.valid_sections |=
9607                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9608                         ctxt.info.sec_flags |=
9609                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9610                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9611                 }
9612                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9613                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9614                 break;
9615
9616 #ifdef I40E_FCOE
9617         case I40E_VSI_FCOE:
9618                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9619                 if (ret) {
9620                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9621                         return ret;
9622                 }
9623                 break;
9624
9625 #endif /* I40E_FCOE */
9626         case I40E_VSI_IWARP:
9627                 /* send down message to iWARP */
9628                 break;
9629
9630         default:
9631                 return -ENODEV;
9632         }
9633
9634         if (vsi->type != I40E_VSI_MAIN) {
9635                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9636                 if (ret) {
9637                         dev_info(&vsi->back->pdev->dev,
9638                                  "add vsi failed, err %s aq_err %s\n",
9639                                  i40e_stat_str(&pf->hw, ret),
9640                                  i40e_aq_str(&pf->hw,
9641                                              pf->hw.aq.asq_last_status));
9642                         ret = -ENOENT;
9643                         goto err;
9644                 }
9645                 vsi->info = ctxt.info;
9646                 vsi->info.valid_sections = 0;
9647                 vsi->seid = ctxt.seid;
9648                 vsi->id = ctxt.vsi_number;
9649         }
9650
9651         vsi->active_filters = 0;
9652         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9653         spin_lock_bh(&vsi->mac_filter_hash_lock);
9654         /* If macvlan filters already exist, force them to get loaded */
9655         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
9656                 f->state = I40E_FILTER_NEW;
9657                 f_count++;
9658         }
9659         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9660
9661         if (f_count) {
9662                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9663                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9664         }
9665
9666         /* Update VSI BW information */
9667         ret = i40e_vsi_get_bw_info(vsi);
9668         if (ret) {
9669                 dev_info(&pf->pdev->dev,
9670                          "couldn't get vsi bw info, err %s aq_err %s\n",
9671                          i40e_stat_str(&pf->hw, ret),
9672                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9673                 /* VSI is already added so not tearing that up */
9674                 ret = 0;
9675         }
9676
9677 err:
9678         return ret;
9679 }
9680
9681 /**
9682  * i40e_vsi_release - Delete a VSI and free its resources
9683  * @vsi: the VSI being removed
9684  *
9685  * Returns 0 on success or < 0 on error
9686  **/
9687 int i40e_vsi_release(struct i40e_vsi *vsi)
9688 {
9689         struct i40e_mac_filter *f;
9690         struct hlist_node *h;
9691         struct i40e_veb *veb = NULL;
9692         struct i40e_pf *pf;
9693         u16 uplink_seid;
9694         int i, n, bkt;
9695
9696         pf = vsi->back;
9697
9698         /* release of a VEB-owner or last VSI is not allowed */
9699         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9700                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9701                          vsi->seid, vsi->uplink_seid);
9702                 return -ENODEV;
9703         }
9704         if (vsi == pf->vsi[pf->lan_vsi] &&
9705             !test_bit(__I40E_DOWN, &pf->state)) {
9706                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9707                 return -ENODEV;
9708         }
9709
9710         uplink_seid = vsi->uplink_seid;
9711         if (vsi->type != I40E_VSI_SRIOV) {
9712                 if (vsi->netdev_registered) {
9713                         vsi->netdev_registered = false;
9714                         if (vsi->netdev) {
9715                                 /* results in a call to i40e_close() */
9716                                 unregister_netdev(vsi->netdev);
9717                         }
9718                 } else {
9719                         i40e_vsi_close(vsi);
9720                 }
9721                 i40e_vsi_disable_irq(vsi);
9722         }
9723
9724         spin_lock_bh(&vsi->mac_filter_hash_lock);
9725
9726         /* clear the sync flag on all filters */
9727         if (vsi->netdev) {
9728                 __dev_uc_unsync(vsi->netdev, NULL);
9729                 __dev_mc_unsync(vsi->netdev, NULL);
9730         }
9731
9732         /* make sure any remaining filters are marked for deletion */
9733         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
9734                 __i40e_del_filter(vsi, f);
9735
9736         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9737
9738         i40e_sync_vsi_filters(vsi);
9739
9740         i40e_vsi_delete(vsi);
9741         i40e_vsi_free_q_vectors(vsi);
9742         if (vsi->netdev) {
9743                 free_netdev(vsi->netdev);
9744                 vsi->netdev = NULL;
9745         }
9746         i40e_vsi_clear_rings(vsi);
9747         i40e_vsi_clear(vsi);
9748
9749         /* If this was the last thing on the VEB, except for the
9750          * controlling VSI, remove the VEB, which puts the controlling
9751          * VSI onto the next level down in the switch.
9752          *
9753          * Well, okay, there's one more exception here: don't remove
9754          * the orphan VEBs yet.  We'll wait for an explicit remove request
9755          * from up the network stack.
9756          */
9757         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9758                 if (pf->vsi[i] &&
9759                     pf->vsi[i]->uplink_seid == uplink_seid &&
9760                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9761                         n++;      /* count the VSIs */
9762                 }
9763         }
9764         for (i = 0; i < I40E_MAX_VEB; i++) {
9765                 if (!pf->veb[i])
9766                         continue;
9767                 if (pf->veb[i]->uplink_seid == uplink_seid)
9768                         n++;     /* count the VEBs */
9769                 if (pf->veb[i]->seid == uplink_seid)
9770                         veb = pf->veb[i];
9771         }
9772         if (n == 0 && veb && veb->uplink_seid != 0)
9773                 i40e_veb_release(veb);
9774
9775         return 0;
9776 }
9777
9778 /**
9779  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9780  * @vsi: ptr to the VSI
9781  *
9782  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9783  * corresponding SW VSI structure and initializes num_queue_pairs for the
9784  * newly allocated VSI.
9785  *
9786  * Returns 0 on success or negative on failure
9787  **/
9788 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9789 {
9790         int ret = -ENOENT;
9791         struct i40e_pf *pf = vsi->back;
9792
9793         if (vsi->q_vectors[0]) {
9794                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9795                          vsi->seid);
9796                 return -EEXIST;
9797         }
9798
9799         if (vsi->base_vector) {
9800                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9801                          vsi->seid, vsi->base_vector);
9802                 return -EEXIST;
9803         }
9804
9805         ret = i40e_vsi_alloc_q_vectors(vsi);
9806         if (ret) {
9807                 dev_info(&pf->pdev->dev,
9808                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9809                          vsi->num_q_vectors, vsi->seid, ret);
9810                 vsi->num_q_vectors = 0;
9811                 goto vector_setup_out;
9812         }
9813
9814         /* In Legacy mode, we do not have to get any other vector since we
9815          * piggyback on the misc/ICR0 for queue interrupts.
9816         */
9817         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9818                 return ret;
9819         if (vsi->num_q_vectors)
9820                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9821                                                  vsi->num_q_vectors, vsi->idx);
9822         if (vsi->base_vector < 0) {
9823                 dev_info(&pf->pdev->dev,
9824                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9825                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9826                 i40e_vsi_free_q_vectors(vsi);
9827                 ret = -ENOENT;
9828                 goto vector_setup_out;
9829         }
9830
9831 vector_setup_out:
9832         return ret;
9833 }
9834
9835 /**
9836  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9837  * @vsi: pointer to the vsi.
9838  *
9839  * This re-allocates a vsi's queue resources.
9840  *
9841  * Returns pointer to the successfully allocated and configured VSI sw struct
9842  * on success, otherwise returns NULL on failure.
9843  **/
9844 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9845 {
9846         struct i40e_pf *pf;
9847         u8 enabled_tc;
9848         int ret;
9849
9850         if (!vsi)
9851                 return NULL;
9852
9853         pf = vsi->back;
9854
9855         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9856         i40e_vsi_clear_rings(vsi);
9857
9858         i40e_vsi_free_arrays(vsi, false);
9859         i40e_set_num_rings_in_vsi(vsi);
9860         ret = i40e_vsi_alloc_arrays(vsi, false);
9861         if (ret)
9862                 goto err_vsi;
9863
9864         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9865         if (ret < 0) {
9866                 dev_info(&pf->pdev->dev,
9867                          "failed to get tracking for %d queues for VSI %d err %d\n",
9868                          vsi->alloc_queue_pairs, vsi->seid, ret);
9869                 goto err_vsi;
9870         }
9871         vsi->base_queue = ret;
9872
9873         /* Update the FW view of the VSI. Force a reset of TC and queue
9874          * layout configurations.
9875          */
9876         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9877         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9878         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9879         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9880         if (vsi->type == I40E_VSI_MAIN)
9881                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9882
9883         /* assign it some queues */
9884         ret = i40e_alloc_rings(vsi);
9885         if (ret)
9886                 goto err_rings;
9887
9888         /* map all of the rings to the q_vectors */
9889         i40e_vsi_map_rings_to_vectors(vsi);
9890         return vsi;
9891
9892 err_rings:
9893         i40e_vsi_free_q_vectors(vsi);
9894         if (vsi->netdev_registered) {
9895                 vsi->netdev_registered = false;
9896                 unregister_netdev(vsi->netdev);
9897                 free_netdev(vsi->netdev);
9898                 vsi->netdev = NULL;
9899         }
9900         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9901 err_vsi:
9902         i40e_vsi_clear(vsi);
9903         return NULL;
9904 }
9905
9906 /**
9907  * i40e_vsi_setup - Set up a VSI by a given type
9908  * @pf: board private structure
9909  * @type: VSI type
9910  * @uplink_seid: the switch element to link to
9911  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9912  *
9913  * This allocates the sw VSI structure and its queue resources, then add a VSI
9914  * to the identified VEB.
9915  *
9916  * Returns pointer to the successfully allocated and configure VSI sw struct on
9917  * success, otherwise returns NULL on failure.
9918  **/
9919 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9920                                 u16 uplink_seid, u32 param1)
9921 {
9922         struct i40e_vsi *vsi = NULL;
9923         struct i40e_veb *veb = NULL;
9924         int ret, i;
9925         int v_idx;
9926
9927         /* The requested uplink_seid must be either
9928          *     - the PF's port seid
9929          *              no VEB is needed because this is the PF
9930          *              or this is a Flow Director special case VSI
9931          *     - seid of an existing VEB
9932          *     - seid of a VSI that owns an existing VEB
9933          *     - seid of a VSI that doesn't own a VEB
9934          *              a new VEB is created and the VSI becomes the owner
9935          *     - seid of the PF VSI, which is what creates the first VEB
9936          *              this is a special case of the previous
9937          *
9938          * Find which uplink_seid we were given and create a new VEB if needed
9939          */
9940         for (i = 0; i < I40E_MAX_VEB; i++) {
9941                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9942                         veb = pf->veb[i];
9943                         break;
9944                 }
9945         }
9946
9947         if (!veb && uplink_seid != pf->mac_seid) {
9948
9949                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9950                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9951                                 vsi = pf->vsi[i];
9952                                 break;
9953                         }
9954                 }
9955                 if (!vsi) {
9956                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9957                                  uplink_seid);
9958                         return NULL;
9959                 }
9960
9961                 if (vsi->uplink_seid == pf->mac_seid)
9962                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9963                                              vsi->tc_config.enabled_tc);
9964                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9965                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9966                                              vsi->tc_config.enabled_tc);
9967                 if (veb) {
9968                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9969                                 dev_info(&vsi->back->pdev->dev,
9970                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9971                                 return NULL;
9972                         }
9973                         /* We come up by default in VEPA mode if SRIOV is not
9974                          * already enabled, in which case we can't force VEPA
9975                          * mode.
9976                          */
9977                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9978                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9979                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9980                         }
9981                         i40e_config_bridge_mode(veb);
9982                 }
9983                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9984                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9985                                 veb = pf->veb[i];
9986                 }
9987                 if (!veb) {
9988                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9989                         return NULL;
9990                 }
9991
9992                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9993                 uplink_seid = veb->seid;
9994         }
9995
9996         /* get vsi sw struct */
9997         v_idx = i40e_vsi_mem_alloc(pf, type);
9998         if (v_idx < 0)
9999                 goto err_alloc;
10000         vsi = pf->vsi[v_idx];
10001         if (!vsi)
10002                 goto err_alloc;
10003         vsi->type = type;
10004         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
10005
10006         if (type == I40E_VSI_MAIN)
10007                 pf->lan_vsi = v_idx;
10008         else if (type == I40E_VSI_SRIOV)
10009                 vsi->vf_id = param1;
10010         /* assign it some queues */
10011         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
10012                                 vsi->idx);
10013         if (ret < 0) {
10014                 dev_info(&pf->pdev->dev,
10015                          "failed to get tracking for %d queues for VSI %d err=%d\n",
10016                          vsi->alloc_queue_pairs, vsi->seid, ret);
10017                 goto err_vsi;
10018         }
10019         vsi->base_queue = ret;
10020
10021         /* get a VSI from the hardware */
10022         vsi->uplink_seid = uplink_seid;
10023         ret = i40e_add_vsi(vsi);
10024         if (ret)
10025                 goto err_vsi;
10026
10027         switch (vsi->type) {
10028         /* setup the netdev if needed */
10029         case I40E_VSI_MAIN:
10030                 /* Apply relevant filters if a platform-specific mac
10031                  * address was selected.
10032                  */
10033                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
10034                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
10035                         if (ret) {
10036                                 dev_warn(&pf->pdev->dev,
10037                                          "could not set up macaddr; err %d\n",
10038                                          ret);
10039                         }
10040                 }
10041         case I40E_VSI_VMDQ2:
10042         case I40E_VSI_FCOE:
10043                 ret = i40e_config_netdev(vsi);
10044                 if (ret)
10045                         goto err_netdev;
10046                 ret = register_netdev(vsi->netdev);
10047                 if (ret)
10048                         goto err_netdev;
10049                 vsi->netdev_registered = true;
10050                 netif_carrier_off(vsi->netdev);
10051 #ifdef CONFIG_I40E_DCB
10052                 /* Setup DCB netlink interface */
10053                 i40e_dcbnl_setup(vsi);
10054 #endif /* CONFIG_I40E_DCB */
10055                 /* fall through */
10056
10057         case I40E_VSI_FDIR:
10058                 /* set up vectors and rings if needed */
10059                 ret = i40e_vsi_setup_vectors(vsi);
10060                 if (ret)
10061                         goto err_msix;
10062
10063                 ret = i40e_alloc_rings(vsi);
10064                 if (ret)
10065                         goto err_rings;
10066
10067                 /* map all of the rings to the q_vectors */
10068                 i40e_vsi_map_rings_to_vectors(vsi);
10069
10070                 i40e_vsi_reset_stats(vsi);
10071                 break;
10072
10073         default:
10074                 /* no netdev or rings for the other VSI types */
10075                 break;
10076         }
10077
10078         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
10079             (vsi->type == I40E_VSI_VMDQ2)) {
10080                 ret = i40e_vsi_config_rss(vsi);
10081         }
10082         return vsi;
10083
10084 err_rings:
10085         i40e_vsi_free_q_vectors(vsi);
10086 err_msix:
10087         if (vsi->netdev_registered) {
10088                 vsi->netdev_registered = false;
10089                 unregister_netdev(vsi->netdev);
10090                 free_netdev(vsi->netdev);
10091                 vsi->netdev = NULL;
10092         }
10093 err_netdev:
10094         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
10095 err_vsi:
10096         i40e_vsi_clear(vsi);
10097 err_alloc:
10098         return NULL;
10099 }
10100
10101 /**
10102  * i40e_veb_get_bw_info - Query VEB BW information
10103  * @veb: the veb to query
10104  *
10105  * Query the Tx scheduler BW configuration data for given VEB
10106  **/
10107 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
10108 {
10109         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
10110         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
10111         struct i40e_pf *pf = veb->pf;
10112         struct i40e_hw *hw = &pf->hw;
10113         u32 tc_bw_max;
10114         int ret = 0;
10115         int i;
10116
10117         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
10118                                                   &bw_data, NULL);
10119         if (ret) {
10120                 dev_info(&pf->pdev->dev,
10121                          "query veb bw config failed, err %s aq_err %s\n",
10122                          i40e_stat_str(&pf->hw, ret),
10123                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10124                 goto out;
10125         }
10126
10127         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
10128                                                    &ets_data, NULL);
10129         if (ret) {
10130                 dev_info(&pf->pdev->dev,
10131                          "query veb bw ets config failed, err %s aq_err %s\n",
10132                          i40e_stat_str(&pf->hw, ret),
10133                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10134                 goto out;
10135         }
10136
10137         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
10138         veb->bw_max_quanta = ets_data.tc_bw_max;
10139         veb->is_abs_credits = bw_data.absolute_credits_enable;
10140         veb->enabled_tc = ets_data.tc_valid_bits;
10141         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
10142                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
10143         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
10144                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
10145                 veb->bw_tc_limit_credits[i] =
10146                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
10147                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
10148         }
10149
10150 out:
10151         return ret;
10152 }
10153
10154 /**
10155  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
10156  * @pf: board private structure
10157  *
10158  * On error: returns error code (negative)
10159  * On success: returns vsi index in PF (positive)
10160  **/
10161 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
10162 {
10163         int ret = -ENOENT;
10164         struct i40e_veb *veb;
10165         int i;
10166
10167         /* Need to protect the allocation of switch elements at the PF level */
10168         mutex_lock(&pf->switch_mutex);
10169
10170         /* VEB list may be fragmented if VEB creation/destruction has
10171          * been happening.  We can afford to do a quick scan to look
10172          * for any free slots in the list.
10173          *
10174          * find next empty veb slot, looping back around if necessary
10175          */
10176         i = 0;
10177         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
10178                 i++;
10179         if (i >= I40E_MAX_VEB) {
10180                 ret = -ENOMEM;
10181                 goto err_alloc_veb;  /* out of VEB slots! */
10182         }
10183
10184         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10185         if (!veb) {
10186                 ret = -ENOMEM;
10187                 goto err_alloc_veb;
10188         }
10189         veb->pf = pf;
10190         veb->idx = i;
10191         veb->enabled_tc = 1;
10192
10193         pf->veb[i] = veb;
10194         ret = i;
10195 err_alloc_veb:
10196         mutex_unlock(&pf->switch_mutex);
10197         return ret;
10198 }
10199
10200 /**
10201  * i40e_switch_branch_release - Delete a branch of the switch tree
10202  * @branch: where to start deleting
10203  *
10204  * This uses recursion to find the tips of the branch to be
10205  * removed, deleting until we get back to and can delete this VEB.
10206  **/
10207 static void i40e_switch_branch_release(struct i40e_veb *branch)
10208 {
10209         struct i40e_pf *pf = branch->pf;
10210         u16 branch_seid = branch->seid;
10211         u16 veb_idx = branch->idx;
10212         int i;
10213
10214         /* release any VEBs on this VEB - RECURSION */
10215         for (i = 0; i < I40E_MAX_VEB; i++) {
10216                 if (!pf->veb[i])
10217                         continue;
10218                 if (pf->veb[i]->uplink_seid == branch->seid)
10219                         i40e_switch_branch_release(pf->veb[i]);
10220         }
10221
10222         /* Release the VSIs on this VEB, but not the owner VSI.
10223          *
10224          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10225          *       the VEB itself, so don't use (*branch) after this loop.
10226          */
10227         for (i = 0; i < pf->num_alloc_vsi; i++) {
10228                 if (!pf->vsi[i])
10229                         continue;
10230                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10231                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10232                         i40e_vsi_release(pf->vsi[i]);
10233                 }
10234         }
10235
10236         /* There's one corner case where the VEB might not have been
10237          * removed, so double check it here and remove it if needed.
10238          * This case happens if the veb was created from the debugfs
10239          * commands and no VSIs were added to it.
10240          */
10241         if (pf->veb[veb_idx])
10242                 i40e_veb_release(pf->veb[veb_idx]);
10243 }
10244
10245 /**
10246  * i40e_veb_clear - remove veb struct
10247  * @veb: the veb to remove
10248  **/
10249 static void i40e_veb_clear(struct i40e_veb *veb)
10250 {
10251         if (!veb)
10252                 return;
10253
10254         if (veb->pf) {
10255                 struct i40e_pf *pf = veb->pf;
10256
10257                 mutex_lock(&pf->switch_mutex);
10258                 if (pf->veb[veb->idx] == veb)
10259                         pf->veb[veb->idx] = NULL;
10260                 mutex_unlock(&pf->switch_mutex);
10261         }
10262
10263         kfree(veb);
10264 }
10265
10266 /**
10267  * i40e_veb_release - Delete a VEB and free its resources
10268  * @veb: the VEB being removed
10269  **/
10270 void i40e_veb_release(struct i40e_veb *veb)
10271 {
10272         struct i40e_vsi *vsi = NULL;
10273         struct i40e_pf *pf;
10274         int i, n = 0;
10275
10276         pf = veb->pf;
10277
10278         /* find the remaining VSI and check for extras */
10279         for (i = 0; i < pf->num_alloc_vsi; i++) {
10280                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10281                         n++;
10282                         vsi = pf->vsi[i];
10283                 }
10284         }
10285         if (n != 1) {
10286                 dev_info(&pf->pdev->dev,
10287                          "can't remove VEB %d with %d VSIs left\n",
10288                          veb->seid, n);
10289                 return;
10290         }
10291
10292         /* move the remaining VSI to uplink veb */
10293         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10294         if (veb->uplink_seid) {
10295                 vsi->uplink_seid = veb->uplink_seid;
10296                 if (veb->uplink_seid == pf->mac_seid)
10297                         vsi->veb_idx = I40E_NO_VEB;
10298                 else
10299                         vsi->veb_idx = veb->veb_idx;
10300         } else {
10301                 /* floating VEB */
10302                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10303                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10304         }
10305
10306         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10307         i40e_veb_clear(veb);
10308 }
10309
10310 /**
10311  * i40e_add_veb - create the VEB in the switch
10312  * @veb: the VEB to be instantiated
10313  * @vsi: the controlling VSI
10314  **/
10315 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10316 {
10317         struct i40e_pf *pf = veb->pf;
10318         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10319         int ret;
10320
10321         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10322                               veb->enabled_tc, false,
10323                               &veb->seid, enable_stats, NULL);
10324
10325         /* get a VEB from the hardware */
10326         if (ret) {
10327                 dev_info(&pf->pdev->dev,
10328                          "couldn't add VEB, err %s aq_err %s\n",
10329                          i40e_stat_str(&pf->hw, ret),
10330                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10331                 return -EPERM;
10332         }
10333
10334         /* get statistics counter */
10335         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10336                                          &veb->stats_idx, NULL, NULL, NULL);
10337         if (ret) {
10338                 dev_info(&pf->pdev->dev,
10339                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10340                          i40e_stat_str(&pf->hw, ret),
10341                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10342                 return -EPERM;
10343         }
10344         ret = i40e_veb_get_bw_info(veb);
10345         if (ret) {
10346                 dev_info(&pf->pdev->dev,
10347                          "couldn't get VEB bw info, err %s aq_err %s\n",
10348                          i40e_stat_str(&pf->hw, ret),
10349                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10350                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10351                 return -ENOENT;
10352         }
10353
10354         vsi->uplink_seid = veb->seid;
10355         vsi->veb_idx = veb->idx;
10356         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10357
10358         return 0;
10359 }
10360
10361 /**
10362  * i40e_veb_setup - Set up a VEB
10363  * @pf: board private structure
10364  * @flags: VEB setup flags
10365  * @uplink_seid: the switch element to link to
10366  * @vsi_seid: the initial VSI seid
10367  * @enabled_tc: Enabled TC bit-map
10368  *
10369  * This allocates the sw VEB structure and links it into the switch
10370  * It is possible and legal for this to be a duplicate of an already
10371  * existing VEB.  It is also possible for both uplink and vsi seids
10372  * to be zero, in order to create a floating VEB.
10373  *
10374  * Returns pointer to the successfully allocated VEB sw struct on
10375  * success, otherwise returns NULL on failure.
10376  **/
10377 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10378                                 u16 uplink_seid, u16 vsi_seid,
10379                                 u8 enabled_tc)
10380 {
10381         struct i40e_veb *veb, *uplink_veb = NULL;
10382         int vsi_idx, veb_idx;
10383         int ret;
10384
10385         /* if one seid is 0, the other must be 0 to create a floating relay */
10386         if ((uplink_seid == 0 || vsi_seid == 0) &&
10387             (uplink_seid + vsi_seid != 0)) {
10388                 dev_info(&pf->pdev->dev,
10389                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10390                          uplink_seid, vsi_seid);
10391                 return NULL;
10392         }
10393
10394         /* make sure there is such a vsi and uplink */
10395         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10396                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10397                         break;
10398         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10399                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10400                          vsi_seid);
10401                 return NULL;
10402         }
10403
10404         if (uplink_seid && uplink_seid != pf->mac_seid) {
10405                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10406                         if (pf->veb[veb_idx] &&
10407                             pf->veb[veb_idx]->seid == uplink_seid) {
10408                                 uplink_veb = pf->veb[veb_idx];
10409                                 break;
10410                         }
10411                 }
10412                 if (!uplink_veb) {
10413                         dev_info(&pf->pdev->dev,
10414                                  "uplink seid %d not found\n", uplink_seid);
10415                         return NULL;
10416                 }
10417         }
10418
10419         /* get veb sw struct */
10420         veb_idx = i40e_veb_mem_alloc(pf);
10421         if (veb_idx < 0)
10422                 goto err_alloc;
10423         veb = pf->veb[veb_idx];
10424         veb->flags = flags;
10425         veb->uplink_seid = uplink_seid;
10426         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10427         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10428
10429         /* create the VEB in the switch */
10430         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10431         if (ret)
10432                 goto err_veb;
10433         if (vsi_idx == pf->lan_vsi)
10434                 pf->lan_veb = veb->idx;
10435
10436         return veb;
10437
10438 err_veb:
10439         i40e_veb_clear(veb);
10440 err_alloc:
10441         return NULL;
10442 }
10443
10444 /**
10445  * i40e_setup_pf_switch_element - set PF vars based on switch type
10446  * @pf: board private structure
10447  * @ele: element we are building info from
10448  * @num_reported: total number of elements
10449  * @printconfig: should we print the contents
10450  *
10451  * helper function to assist in extracting a few useful SEID values.
10452  **/
10453 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10454                                 struct i40e_aqc_switch_config_element_resp *ele,
10455                                 u16 num_reported, bool printconfig)
10456 {
10457         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10458         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10459         u8 element_type = ele->element_type;
10460         u16 seid = le16_to_cpu(ele->seid);
10461
10462         if (printconfig)
10463                 dev_info(&pf->pdev->dev,
10464                          "type=%d seid=%d uplink=%d downlink=%d\n",
10465                          element_type, seid, uplink_seid, downlink_seid);
10466
10467         switch (element_type) {
10468         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10469                 pf->mac_seid = seid;
10470                 break;
10471         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10472                 /* Main VEB? */
10473                 if (uplink_seid != pf->mac_seid)
10474                         break;
10475                 if (pf->lan_veb == I40E_NO_VEB) {
10476                         int v;
10477
10478                         /* find existing or else empty VEB */
10479                         for (v = 0; v < I40E_MAX_VEB; v++) {
10480                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10481                                         pf->lan_veb = v;
10482                                         break;
10483                                 }
10484                         }
10485                         if (pf->lan_veb == I40E_NO_VEB) {
10486                                 v = i40e_veb_mem_alloc(pf);
10487                                 if (v < 0)
10488                                         break;
10489                                 pf->lan_veb = v;
10490                         }
10491                 }
10492
10493                 pf->veb[pf->lan_veb]->seid = seid;
10494                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10495                 pf->veb[pf->lan_veb]->pf = pf;
10496                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10497                 break;
10498         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10499                 if (num_reported != 1)
10500                         break;
10501                 /* This is immediately after a reset so we can assume this is
10502                  * the PF's VSI
10503                  */
10504                 pf->mac_seid = uplink_seid;
10505                 pf->pf_seid = downlink_seid;
10506                 pf->main_vsi_seid = seid;
10507                 if (printconfig)
10508                         dev_info(&pf->pdev->dev,
10509                                  "pf_seid=%d main_vsi_seid=%d\n",
10510                                  pf->pf_seid, pf->main_vsi_seid);
10511                 break;
10512         case I40E_SWITCH_ELEMENT_TYPE_PF:
10513         case I40E_SWITCH_ELEMENT_TYPE_VF:
10514         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10515         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10516         case I40E_SWITCH_ELEMENT_TYPE_PE:
10517         case I40E_SWITCH_ELEMENT_TYPE_PA:
10518                 /* ignore these for now */
10519                 break;
10520         default:
10521                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10522                          element_type, seid);
10523                 break;
10524         }
10525 }
10526
10527 /**
10528  * i40e_fetch_switch_configuration - Get switch config from firmware
10529  * @pf: board private structure
10530  * @printconfig: should we print the contents
10531  *
10532  * Get the current switch configuration from the device and
10533  * extract a few useful SEID values.
10534  **/
10535 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10536 {
10537         struct i40e_aqc_get_switch_config_resp *sw_config;
10538         u16 next_seid = 0;
10539         int ret = 0;
10540         u8 *aq_buf;
10541         int i;
10542
10543         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10544         if (!aq_buf)
10545                 return -ENOMEM;
10546
10547         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10548         do {
10549                 u16 num_reported, num_total;
10550
10551                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10552                                                 I40E_AQ_LARGE_BUF,
10553                                                 &next_seid, NULL);
10554                 if (ret) {
10555                         dev_info(&pf->pdev->dev,
10556                                  "get switch config failed err %s aq_err %s\n",
10557                                  i40e_stat_str(&pf->hw, ret),
10558                                  i40e_aq_str(&pf->hw,
10559                                              pf->hw.aq.asq_last_status));
10560                         kfree(aq_buf);
10561                         return -ENOENT;
10562                 }
10563
10564                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10565                 num_total = le16_to_cpu(sw_config->header.num_total);
10566
10567                 if (printconfig)
10568                         dev_info(&pf->pdev->dev,
10569                                  "header: %d reported %d total\n",
10570                                  num_reported, num_total);
10571
10572                 for (i = 0; i < num_reported; i++) {
10573                         struct i40e_aqc_switch_config_element_resp *ele =
10574                                 &sw_config->element[i];
10575
10576                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10577                                                      printconfig);
10578                 }
10579         } while (next_seid != 0);
10580
10581         kfree(aq_buf);
10582         return ret;
10583 }
10584
10585 /**
10586  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10587  * @pf: board private structure
10588  * @reinit: if the Main VSI needs to re-initialized.
10589  *
10590  * Returns 0 on success, negative value on failure
10591  **/
10592 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10593 {
10594         u16 flags = 0;
10595         int ret;
10596
10597         /* find out what's out there already */
10598         ret = i40e_fetch_switch_configuration(pf, false);
10599         if (ret) {
10600                 dev_info(&pf->pdev->dev,
10601                          "couldn't fetch switch config, err %s aq_err %s\n",
10602                          i40e_stat_str(&pf->hw, ret),
10603                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10604                 return ret;
10605         }
10606         i40e_pf_reset_stats(pf);
10607
10608         /* set the switch config bit for the whole device to
10609          * support limited promisc or true promisc
10610          * when user requests promisc. The default is limited
10611          * promisc.
10612         */
10613
10614         if ((pf->hw.pf_id == 0) &&
10615             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10616                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10617
10618         if (pf->hw.pf_id == 0) {
10619                 u16 valid_flags;
10620
10621                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10622                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10623                                                 NULL);
10624                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10625                         dev_info(&pf->pdev->dev,
10626                                  "couldn't set switch config bits, err %s aq_err %s\n",
10627                                  i40e_stat_str(&pf->hw, ret),
10628                                  i40e_aq_str(&pf->hw,
10629                                              pf->hw.aq.asq_last_status));
10630                         /* not a fatal problem, just keep going */
10631                 }
10632         }
10633
10634         /* first time setup */
10635         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10636                 struct i40e_vsi *vsi = NULL;
10637                 u16 uplink_seid;
10638
10639                 /* Set up the PF VSI associated with the PF's main VSI
10640                  * that is already in the HW switch
10641                  */
10642                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10643                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10644                 else
10645                         uplink_seid = pf->mac_seid;
10646                 if (pf->lan_vsi == I40E_NO_VSI)
10647                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10648                 else if (reinit)
10649                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10650                 if (!vsi) {
10651                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10652                         i40e_fdir_teardown(pf);
10653                         return -EAGAIN;
10654                 }
10655         } else {
10656                 /* force a reset of TC and queue layout configurations */
10657                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10658
10659                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10660                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10661                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10662         }
10663         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10664
10665         i40e_fdir_sb_setup(pf);
10666
10667         /* Setup static PF queue filter control settings */
10668         ret = i40e_setup_pf_filter_control(pf);
10669         if (ret) {
10670                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10671                          ret);
10672                 /* Failure here should not stop continuing other steps */
10673         }
10674
10675         /* enable RSS in the HW, even for only one queue, as the stack can use
10676          * the hash
10677          */
10678         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10679                 i40e_pf_config_rss(pf);
10680
10681         /* fill in link information and enable LSE reporting */
10682         i40e_update_link_info(&pf->hw);
10683         i40e_link_event(pf);
10684
10685         /* Initialize user-specific link properties */
10686         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10687                                   I40E_AQ_AN_COMPLETED) ? true : false);
10688
10689         i40e_ptp_init(pf);
10690
10691         return ret;
10692 }
10693
10694 /**
10695  * i40e_determine_queue_usage - Work out queue distribution
10696  * @pf: board private structure
10697  **/
10698 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10699 {
10700         int queues_left;
10701
10702         pf->num_lan_qps = 0;
10703 #ifdef I40E_FCOE
10704         pf->num_fcoe_qps = 0;
10705 #endif
10706
10707         /* Find the max queues to be put into basic use.  We'll always be
10708          * using TC0, whether or not DCB is running, and TC0 will get the
10709          * big RSS set.
10710          */
10711         queues_left = pf->hw.func_caps.num_tx_qp;
10712
10713         if ((queues_left == 1) ||
10714             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10715                 /* one qp for PF, no queues for anything else */
10716                 queues_left = 0;
10717                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10718
10719                 /* make sure all the fancies are disabled */
10720                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10721                                I40E_FLAG_IWARP_ENABLED  |
10722 #ifdef I40E_FCOE
10723                                I40E_FLAG_FCOE_ENABLED   |
10724 #endif
10725                                I40E_FLAG_FD_SB_ENABLED  |
10726                                I40E_FLAG_FD_ATR_ENABLED |
10727                                I40E_FLAG_DCB_CAPABLE    |
10728                                I40E_FLAG_DCB_ENABLED    |
10729                                I40E_FLAG_SRIOV_ENABLED  |
10730                                I40E_FLAG_VMDQ_ENABLED);
10731         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10732                                   I40E_FLAG_FD_SB_ENABLED |
10733                                   I40E_FLAG_FD_ATR_ENABLED |
10734                                   I40E_FLAG_DCB_CAPABLE))) {
10735                 /* one qp for PF */
10736                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10737                 queues_left -= pf->num_lan_qps;
10738
10739                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10740                                I40E_FLAG_IWARP_ENABLED  |
10741 #ifdef I40E_FCOE
10742                                I40E_FLAG_FCOE_ENABLED   |
10743 #endif
10744                                I40E_FLAG_FD_SB_ENABLED  |
10745                                I40E_FLAG_FD_ATR_ENABLED |
10746                                I40E_FLAG_DCB_ENABLED    |
10747                                I40E_FLAG_VMDQ_ENABLED);
10748         } else {
10749                 /* Not enough queues for all TCs */
10750                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10751                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10752                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10753                                         I40E_FLAG_DCB_ENABLED);
10754                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10755                 }
10756                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10757                                         num_online_cpus());
10758                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10759                                         pf->hw.func_caps.num_tx_qp);
10760
10761                 queues_left -= pf->num_lan_qps;
10762         }
10763
10764 #ifdef I40E_FCOE
10765         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10766                 if (I40E_DEFAULT_FCOE <= queues_left) {
10767                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10768                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10769                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10770                 } else {
10771                         pf->num_fcoe_qps = 0;
10772                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10773                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10774                 }
10775
10776                 queues_left -= pf->num_fcoe_qps;
10777         }
10778
10779 #endif
10780         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10781                 if (queues_left > 1) {
10782                         queues_left -= 1; /* save 1 queue for FD */
10783                 } else {
10784                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10785                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10786                 }
10787         }
10788
10789         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10790             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10791                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10792                                         (queues_left / pf->num_vf_qps));
10793                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10794         }
10795
10796         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10797             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10798                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10799                                           (queues_left / pf->num_vmdq_qps));
10800                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10801         }
10802
10803         pf->queues_left = queues_left;
10804         dev_dbg(&pf->pdev->dev,
10805                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10806                 pf->hw.func_caps.num_tx_qp,
10807                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10808                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10809                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10810                 queues_left);
10811 #ifdef I40E_FCOE
10812         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10813 #endif
10814 }
10815
10816 /**
10817  * i40e_setup_pf_filter_control - Setup PF static filter control
10818  * @pf: PF to be setup
10819  *
10820  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10821  * settings. If PE/FCoE are enabled then it will also set the per PF
10822  * based filter sizes required for them. It also enables Flow director,
10823  * ethertype and macvlan type filter settings for the pf.
10824  *
10825  * Returns 0 on success, negative on failure
10826  **/
10827 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10828 {
10829         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10830
10831         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10832
10833         /* Flow Director is enabled */
10834         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10835                 settings->enable_fdir = true;
10836
10837         /* Ethtype and MACVLAN filters enabled for PF */
10838         settings->enable_ethtype = true;
10839         settings->enable_macvlan = true;
10840
10841         if (i40e_set_filter_control(&pf->hw, settings))
10842                 return -ENOENT;
10843
10844         return 0;
10845 }
10846
10847 #define INFO_STRING_LEN 255
10848 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10849 static void i40e_print_features(struct i40e_pf *pf)
10850 {
10851         struct i40e_hw *hw = &pf->hw;
10852         char *buf;
10853         int i;
10854
10855         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10856         if (!buf)
10857                 return;
10858
10859         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10860 #ifdef CONFIG_PCI_IOV
10861         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10862 #endif
10863         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10864                       pf->hw.func_caps.num_vsis,
10865                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10866         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10867                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10868         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10869                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10870         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10871                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10872                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10873         }
10874         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10875                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10876         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10877         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10878         if (pf->flags & I40E_FLAG_PTP)
10879                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10880 #ifdef I40E_FCOE
10881         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10882                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10883 #endif
10884         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10885                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10886         else
10887                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10888
10889         dev_info(&pf->pdev->dev, "%s\n", buf);
10890         kfree(buf);
10891         WARN_ON(i > INFO_STRING_LEN);
10892 }
10893
10894 /**
10895  * i40e_get_platform_mac_addr - get platform-specific MAC address
10896  *
10897  * @pdev: PCI device information struct
10898  * @pf: board private structure
10899  *
10900  * Look up the MAC address in Open Firmware  on systems that support it,
10901  * and use IDPROM on SPARC if no OF address is found. On return, the
10902  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10903  * has been selected.
10904  **/
10905 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10906 {
10907         pf->flags &= ~I40E_FLAG_PF_MAC;
10908         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10909                 pf->flags |= I40E_FLAG_PF_MAC;
10910 }
10911
10912 /**
10913  * i40e_probe - Device initialization routine
10914  * @pdev: PCI device information struct
10915  * @ent: entry in i40e_pci_tbl
10916  *
10917  * i40e_probe initializes a PF identified by a pci_dev structure.
10918  * The OS initialization, configuring of the PF private structure,
10919  * and a hardware reset occur.
10920  *
10921  * Returns 0 on success, negative on failure
10922  **/
10923 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10924 {
10925         struct i40e_aq_get_phy_abilities_resp abilities;
10926         struct i40e_pf *pf;
10927         struct i40e_hw *hw;
10928         static u16 pfs_found;
10929         u16 wol_nvm_bits;
10930         u16 link_status;
10931         int err;
10932         u32 val;
10933         u32 i;
10934         u8 set_fc_aq_fail;
10935
10936         err = pci_enable_device_mem(pdev);
10937         if (err)
10938                 return err;
10939
10940         /* set up for high or low dma */
10941         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10942         if (err) {
10943                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10944                 if (err) {
10945                         dev_err(&pdev->dev,
10946                                 "DMA configuration failed: 0x%x\n", err);
10947                         goto err_dma;
10948                 }
10949         }
10950
10951         /* set up pci connections */
10952         err = pci_request_mem_regions(pdev, i40e_driver_name);
10953         if (err) {
10954                 dev_info(&pdev->dev,
10955                          "pci_request_selected_regions failed %d\n", err);
10956                 goto err_pci_reg;
10957         }
10958
10959         pci_enable_pcie_error_reporting(pdev);
10960         pci_set_master(pdev);
10961
10962         /* Now that we have a PCI connection, we need to do the
10963          * low level device setup.  This is primarily setting up
10964          * the Admin Queue structures and then querying for the
10965          * device's current profile information.
10966          */
10967         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10968         if (!pf) {
10969                 err = -ENOMEM;
10970                 goto err_pf_alloc;
10971         }
10972         pf->next_vsi = 0;
10973         pf->pdev = pdev;
10974         set_bit(__I40E_DOWN, &pf->state);
10975
10976         hw = &pf->hw;
10977         hw->back = pf;
10978
10979         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10980                                 I40E_MAX_CSR_SPACE);
10981
10982         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10983         if (!hw->hw_addr) {
10984                 err = -EIO;
10985                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10986                          (unsigned int)pci_resource_start(pdev, 0),
10987                          pf->ioremap_len, err);
10988                 goto err_ioremap;
10989         }
10990         hw->vendor_id = pdev->vendor;
10991         hw->device_id = pdev->device;
10992         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10993         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10994         hw->subsystem_device_id = pdev->subsystem_device;
10995         hw->bus.device = PCI_SLOT(pdev->devfn);
10996         hw->bus.func = PCI_FUNC(pdev->devfn);
10997         pf->instance = pfs_found;
10998
10999         /* set up the locks for the AQ, do this only once in probe
11000          * and destroy them only once in remove
11001          */
11002         mutex_init(&hw->aq.asq_mutex);
11003         mutex_init(&hw->aq.arq_mutex);
11004
11005         pf->msg_enable = netif_msg_init(debug,
11006                                         NETIF_MSG_DRV |
11007                                         NETIF_MSG_PROBE |
11008                                         NETIF_MSG_LINK);
11009         if (debug < -1)
11010                 pf->hw.debug_mask = debug;
11011
11012         /* do a special CORER for clearing PXE mode once at init */
11013         if (hw->revision_id == 0 &&
11014             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
11015                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
11016                 i40e_flush(hw);
11017                 msleep(200);
11018                 pf->corer_count++;
11019
11020                 i40e_clear_pxe_mode(hw);
11021         }
11022
11023         /* Reset here to make sure all is clean and to define PF 'n' */
11024         i40e_clear_hw(hw);
11025         err = i40e_pf_reset(hw);
11026         if (err) {
11027                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
11028                 goto err_pf_reset;
11029         }
11030         pf->pfr_count++;
11031
11032         hw->aq.num_arq_entries = I40E_AQ_LEN;
11033         hw->aq.num_asq_entries = I40E_AQ_LEN;
11034         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11035         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11036         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
11037
11038         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
11039                  "%s-%s:misc",
11040                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
11041
11042         err = i40e_init_shared_code(hw);
11043         if (err) {
11044                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
11045                          err);
11046                 goto err_pf_reset;
11047         }
11048
11049         /* set up a default setting for link flow control */
11050         pf->hw.fc.requested_mode = I40E_FC_NONE;
11051
11052         err = i40e_init_adminq(hw);
11053         if (err) {
11054                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
11055                         dev_info(&pdev->dev,
11056                                  "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");
11057                 else
11058                         dev_info(&pdev->dev,
11059                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
11060
11061                 goto err_pf_reset;
11062         }
11063
11064         /* provide nvm, fw, api versions */
11065         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
11066                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
11067                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
11068                  i40e_nvm_version_str(hw));
11069
11070         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
11071             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
11072                 dev_info(&pdev->dev,
11073                          "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");
11074         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
11075                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
11076                 dev_info(&pdev->dev,
11077                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
11078
11079         i40e_verify_eeprom(pf);
11080
11081         /* Rev 0 hardware was never productized */
11082         if (hw->revision_id < 1)
11083                 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");
11084
11085         i40e_clear_pxe_mode(hw);
11086         err = i40e_get_capabilities(pf);
11087         if (err)
11088                 goto err_adminq_setup;
11089
11090         err = i40e_sw_init(pf);
11091         if (err) {
11092                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
11093                 goto err_sw_init;
11094         }
11095
11096         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
11097                                 hw->func_caps.num_rx_qp,
11098                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
11099         if (err) {
11100                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
11101                 goto err_init_lan_hmc;
11102         }
11103
11104         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
11105         if (err) {
11106                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
11107                 err = -ENOENT;
11108                 goto err_configure_lan_hmc;
11109         }
11110
11111         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
11112          * Ignore error return codes because if it was already disabled via
11113          * hardware settings this will fail
11114          */
11115         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
11116                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
11117                 i40e_aq_stop_lldp(hw, true, NULL);
11118         }
11119
11120         i40e_get_mac_addr(hw, hw->mac.addr);
11121         /* allow a platform config to override the HW addr */
11122         i40e_get_platform_mac_addr(pdev, pf);
11123         if (!is_valid_ether_addr(hw->mac.addr)) {
11124                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
11125                 err = -EIO;
11126                 goto err_mac_addr;
11127         }
11128         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
11129         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
11130         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
11131         if (is_valid_ether_addr(hw->mac.port_addr))
11132                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
11133 #ifdef I40E_FCOE
11134         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
11135         if (err)
11136                 dev_info(&pdev->dev,
11137                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
11138         if (!is_valid_ether_addr(hw->mac.san_addr)) {
11139                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
11140                          hw->mac.san_addr);
11141                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
11142         }
11143         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
11144 #endif /* I40E_FCOE */
11145
11146         pci_set_drvdata(pdev, pf);
11147         pci_save_state(pdev);
11148 #ifdef CONFIG_I40E_DCB
11149         err = i40e_init_pf_dcb(pf);
11150         if (err) {
11151                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
11152                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
11153                 /* Continue without DCB enabled */
11154         }
11155 #endif /* CONFIG_I40E_DCB */
11156
11157         /* set up periodic task facility */
11158         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
11159         pf->service_timer_period = HZ;
11160
11161         INIT_WORK(&pf->service_task, i40e_service_task);
11162         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
11163         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
11164
11165         /* NVM bit on means WoL disabled for the port */
11166         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
11167         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
11168                 pf->wol_en = false;
11169         else
11170                 pf->wol_en = true;
11171         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
11172
11173         /* set up the main switch operations */
11174         i40e_determine_queue_usage(pf);
11175         err = i40e_init_interrupt_scheme(pf);
11176         if (err)
11177                 goto err_switch_setup;
11178
11179         /* The number of VSIs reported by the FW is the minimum guaranteed
11180          * to us; HW supports far more and we share the remaining pool with
11181          * the other PFs. We allocate space for more than the guarantee with
11182          * the understanding that we might not get them all later.
11183          */
11184         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11185                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11186         else
11187                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11188
11189         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11190         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11191                           GFP_KERNEL);
11192         if (!pf->vsi) {
11193                 err = -ENOMEM;
11194                 goto err_switch_setup;
11195         }
11196
11197 #ifdef CONFIG_PCI_IOV
11198         /* prep for VF support */
11199         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11200             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11201             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11202                 if (pci_num_vf(pdev))
11203                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11204         }
11205 #endif
11206         err = i40e_setup_pf_switch(pf, false);
11207         if (err) {
11208                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11209                 goto err_vsis;
11210         }
11211
11212         /* Make sure flow control is set according to current settings */
11213         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11214         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11215                 dev_dbg(&pf->pdev->dev,
11216                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11217                         i40e_stat_str(hw, err),
11218                         i40e_aq_str(hw, hw->aq.asq_last_status));
11219         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11220                 dev_dbg(&pf->pdev->dev,
11221                         "Set fc with err %s aq_err %s on set_phy_config\n",
11222                         i40e_stat_str(hw, err),
11223                         i40e_aq_str(hw, hw->aq.asq_last_status));
11224         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11225                 dev_dbg(&pf->pdev->dev,
11226                         "Set fc with err %s aq_err %s on get_link_info\n",
11227                         i40e_stat_str(hw, err),
11228                         i40e_aq_str(hw, hw->aq.asq_last_status));
11229
11230         /* if FDIR VSI was set up, start it now */
11231         for (i = 0; i < pf->num_alloc_vsi; i++) {
11232                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11233                         i40e_vsi_open(pf->vsi[i]);
11234                         break;
11235                 }
11236         }
11237
11238         /* The driver only wants link up/down and module qualification
11239          * reports from firmware.  Note the negative logic.
11240          */
11241         err = i40e_aq_set_phy_int_mask(&pf->hw,
11242                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11243                                          I40E_AQ_EVENT_MEDIA_NA |
11244                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11245         if (err)
11246                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11247                          i40e_stat_str(&pf->hw, err),
11248                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11249
11250         /* Reconfigure hardware for allowing smaller MSS in the case
11251          * of TSO, so that we avoid the MDD being fired and causing
11252          * a reset in the case of small MSS+TSO.
11253          */
11254         val = rd32(hw, I40E_REG_MSS);
11255         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11256                 val &= ~I40E_REG_MSS_MIN_MASK;
11257                 val |= I40E_64BYTE_MSS;
11258                 wr32(hw, I40E_REG_MSS, val);
11259         }
11260
11261         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11262                 msleep(75);
11263                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11264                 if (err)
11265                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11266                                  i40e_stat_str(&pf->hw, err),
11267                                  i40e_aq_str(&pf->hw,
11268                                              pf->hw.aq.asq_last_status));
11269         }
11270         /* The main driver is (mostly) up and happy. We need to set this state
11271          * before setting up the misc vector or we get a race and the vector
11272          * ends up disabled forever.
11273          */
11274         clear_bit(__I40E_DOWN, &pf->state);
11275
11276         /* In case of MSIX we are going to setup the misc vector right here
11277          * to handle admin queue events etc. In case of legacy and MSI
11278          * the misc functionality and queue processing is combined in
11279          * the same vector and that gets setup at open.
11280          */
11281         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11282                 err = i40e_setup_misc_vector(pf);
11283                 if (err) {
11284                         dev_info(&pdev->dev,
11285                                  "setup of misc vector failed: %d\n", err);
11286                         goto err_vsis;
11287                 }
11288         }
11289
11290 #ifdef CONFIG_PCI_IOV
11291         /* prep for VF support */
11292         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11293             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11294             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11295                 /* disable link interrupts for VFs */
11296                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11297                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11298                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11299                 i40e_flush(hw);
11300
11301                 if (pci_num_vf(pdev)) {
11302                         dev_info(&pdev->dev,
11303                                  "Active VFs found, allocating resources.\n");
11304                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11305                         if (err)
11306                                 dev_info(&pdev->dev,
11307                                          "Error %d allocating resources for existing VFs\n",
11308                                          err);
11309                 }
11310         }
11311 #endif /* CONFIG_PCI_IOV */
11312
11313         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11314                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11315                                                       pf->num_iwarp_msix,
11316                                                       I40E_IWARP_IRQ_PILE_ID);
11317                 if (pf->iwarp_base_vector < 0) {
11318                         dev_info(&pdev->dev,
11319                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11320                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11321                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11322                 }
11323         }
11324
11325         i40e_dbg_pf_init(pf);
11326
11327         /* tell the firmware that we're starting */
11328         i40e_send_version(pf);
11329
11330         /* since everything's happy, start the service_task timer */
11331         mod_timer(&pf->service_timer,
11332                   round_jiffies(jiffies + pf->service_timer_period));
11333
11334         /* add this PF to client device list and launch a client service task */
11335         err = i40e_lan_add_device(pf);
11336         if (err)
11337                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11338                          err);
11339
11340 #ifdef I40E_FCOE
11341         /* create FCoE interface */
11342         i40e_fcoe_vsi_setup(pf);
11343
11344 #endif
11345 #define PCI_SPEED_SIZE 8
11346 #define PCI_WIDTH_SIZE 8
11347         /* Devices on the IOSF bus do not have this information
11348          * and will report PCI Gen 1 x 1 by default so don't bother
11349          * checking them.
11350          */
11351         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11352                 char speed[PCI_SPEED_SIZE] = "Unknown";
11353                 char width[PCI_WIDTH_SIZE] = "Unknown";
11354
11355                 /* Get the negotiated link width and speed from PCI config
11356                  * space
11357                  */
11358                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11359                                           &link_status);
11360
11361                 i40e_set_pci_config_data(hw, link_status);
11362
11363                 switch (hw->bus.speed) {
11364                 case i40e_bus_speed_8000:
11365                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11366                 case i40e_bus_speed_5000:
11367                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11368                 case i40e_bus_speed_2500:
11369                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11370                 default:
11371                         break;
11372                 }
11373                 switch (hw->bus.width) {
11374                 case i40e_bus_width_pcie_x8:
11375                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11376                 case i40e_bus_width_pcie_x4:
11377                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11378                 case i40e_bus_width_pcie_x2:
11379                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11380                 case i40e_bus_width_pcie_x1:
11381                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11382                 default:
11383                         break;
11384                 }
11385
11386                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11387                          speed, width);
11388
11389                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11390                     hw->bus.speed < i40e_bus_speed_8000) {
11391                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11392                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11393                 }
11394         }
11395
11396         /* get the requested speeds from the fw */
11397         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11398         if (err)
11399                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11400                         i40e_stat_str(&pf->hw, err),
11401                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11402         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11403
11404         /* get the supported phy types from the fw */
11405         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11406         if (err)
11407                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11408                         i40e_stat_str(&pf->hw, err),
11409                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11410
11411         /* Add a filter to drop all Flow control frames from any VSI from being
11412          * transmitted. By doing so we stop a malicious VF from sending out
11413          * PAUSE or PFC frames and potentially controlling traffic for other
11414          * PF/VF VSIs.
11415          * The FW can still send Flow control frames if enabled.
11416          */
11417         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11418                                                        pf->main_vsi_seid);
11419
11420         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11421                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11422                 pf->flags |= I40E_FLAG_PHY_CONTROLS_LEDS;
11423         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
11424                 pf->flags |= I40E_FLAG_HAVE_CRT_RETIMER;
11425         /* print a string summarizing features */
11426         i40e_print_features(pf);
11427
11428         return 0;
11429
11430         /* Unwind what we've done if something failed in the setup */
11431 err_vsis:
11432         set_bit(__I40E_DOWN, &pf->state);
11433         i40e_clear_interrupt_scheme(pf);
11434         kfree(pf->vsi);
11435 err_switch_setup:
11436         i40e_reset_interrupt_capability(pf);
11437         del_timer_sync(&pf->service_timer);
11438 err_mac_addr:
11439 err_configure_lan_hmc:
11440         (void)i40e_shutdown_lan_hmc(hw);
11441 err_init_lan_hmc:
11442         kfree(pf->qp_pile);
11443 err_sw_init:
11444 err_adminq_setup:
11445 err_pf_reset:
11446         iounmap(hw->hw_addr);
11447 err_ioremap:
11448         kfree(pf);
11449 err_pf_alloc:
11450         pci_disable_pcie_error_reporting(pdev);
11451         pci_release_mem_regions(pdev);
11452 err_pci_reg:
11453 err_dma:
11454         pci_disable_device(pdev);
11455         return err;
11456 }
11457
11458 /**
11459  * i40e_remove - Device removal routine
11460  * @pdev: PCI device information struct
11461  *
11462  * i40e_remove is called by the PCI subsystem to alert the driver
11463  * that is should release a PCI device.  This could be caused by a
11464  * Hot-Plug event, or because the driver is going to be removed from
11465  * memory.
11466  **/
11467 static void i40e_remove(struct pci_dev *pdev)
11468 {
11469         struct i40e_pf *pf = pci_get_drvdata(pdev);
11470         struct i40e_hw *hw = &pf->hw;
11471         i40e_status ret_code;
11472         int i;
11473
11474         i40e_dbg_pf_exit(pf);
11475
11476         i40e_ptp_stop(pf);
11477
11478         /* Disable RSS in hw */
11479         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11480         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11481
11482         /* no more scheduling of any task */
11483         set_bit(__I40E_SUSPENDED, &pf->state);
11484         set_bit(__I40E_DOWN, &pf->state);
11485         if (pf->service_timer.data)
11486                 del_timer_sync(&pf->service_timer);
11487         if (pf->service_task.func)
11488                 cancel_work_sync(&pf->service_task);
11489
11490         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11491                 i40e_free_vfs(pf);
11492                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11493         }
11494
11495         i40e_fdir_teardown(pf);
11496
11497         /* If there is a switch structure or any orphans, remove them.
11498          * This will leave only the PF's VSI remaining.
11499          */
11500         for (i = 0; i < I40E_MAX_VEB; i++) {
11501                 if (!pf->veb[i])
11502                         continue;
11503
11504                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11505                     pf->veb[i]->uplink_seid == 0)
11506                         i40e_switch_branch_release(pf->veb[i]);
11507         }
11508
11509         /* Now we can shutdown the PF's VSI, just before we kill
11510          * adminq and hmc.
11511          */
11512         if (pf->vsi[pf->lan_vsi])
11513                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11514
11515         /* remove attached clients */
11516         ret_code = i40e_lan_del_device(pf);
11517         if (ret_code) {
11518                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11519                          ret_code);
11520         }
11521
11522         /* shutdown and destroy the HMC */
11523         if (hw->hmc.hmc_obj) {
11524                 ret_code = i40e_shutdown_lan_hmc(hw);
11525                 if (ret_code)
11526                         dev_warn(&pdev->dev,
11527                                  "Failed to destroy the HMC resources: %d\n",
11528                                  ret_code);
11529         }
11530
11531         /* shutdown the adminq */
11532         i40e_shutdown_adminq(hw);
11533
11534         /* destroy the locks only once, here */
11535         mutex_destroy(&hw->aq.arq_mutex);
11536         mutex_destroy(&hw->aq.asq_mutex);
11537
11538         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11539         i40e_clear_interrupt_scheme(pf);
11540         for (i = 0; i < pf->num_alloc_vsi; i++) {
11541                 if (pf->vsi[i]) {
11542                         i40e_vsi_clear_rings(pf->vsi[i]);
11543                         i40e_vsi_clear(pf->vsi[i]);
11544                         pf->vsi[i] = NULL;
11545                 }
11546         }
11547
11548         for (i = 0; i < I40E_MAX_VEB; i++) {
11549                 kfree(pf->veb[i]);
11550                 pf->veb[i] = NULL;
11551         }
11552
11553         kfree(pf->qp_pile);
11554         kfree(pf->vsi);
11555
11556         iounmap(hw->hw_addr);
11557         kfree(pf);
11558         pci_release_mem_regions(pdev);
11559
11560         pci_disable_pcie_error_reporting(pdev);
11561         pci_disable_device(pdev);
11562 }
11563
11564 /**
11565  * i40e_pci_error_detected - warning that something funky happened in PCI land
11566  * @pdev: PCI device information struct
11567  *
11568  * Called to warn that something happened and the error handling steps
11569  * are in progress.  Allows the driver to quiesce things, be ready for
11570  * remediation.
11571  **/
11572 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11573                                                 enum pci_channel_state error)
11574 {
11575         struct i40e_pf *pf = pci_get_drvdata(pdev);
11576
11577         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11578
11579         if (!pf) {
11580                 dev_info(&pdev->dev,
11581                          "Cannot recover - error happened during device probe\n");
11582                 return PCI_ERS_RESULT_DISCONNECT;
11583         }
11584
11585         /* shutdown all operations */
11586         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11587                 rtnl_lock();
11588                 i40e_prep_for_reset(pf);
11589                 rtnl_unlock();
11590         }
11591
11592         /* Request a slot reset */
11593         return PCI_ERS_RESULT_NEED_RESET;
11594 }
11595
11596 /**
11597  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11598  * @pdev: PCI device information struct
11599  *
11600  * Called to find if the driver can work with the device now that
11601  * the pci slot has been reset.  If a basic connection seems good
11602  * (registers are readable and have sane content) then return a
11603  * happy little PCI_ERS_RESULT_xxx.
11604  **/
11605 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11606 {
11607         struct i40e_pf *pf = pci_get_drvdata(pdev);
11608         pci_ers_result_t result;
11609         int err;
11610         u32 reg;
11611
11612         dev_dbg(&pdev->dev, "%s\n", __func__);
11613         if (pci_enable_device_mem(pdev)) {
11614                 dev_info(&pdev->dev,
11615                          "Cannot re-enable PCI device after reset.\n");
11616                 result = PCI_ERS_RESULT_DISCONNECT;
11617         } else {
11618                 pci_set_master(pdev);
11619                 pci_restore_state(pdev);
11620                 pci_save_state(pdev);
11621                 pci_wake_from_d3(pdev, false);
11622
11623                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11624                 if (reg == 0)
11625                         result = PCI_ERS_RESULT_RECOVERED;
11626                 else
11627                         result = PCI_ERS_RESULT_DISCONNECT;
11628         }
11629
11630         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11631         if (err) {
11632                 dev_info(&pdev->dev,
11633                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11634                          err);
11635                 /* non-fatal, continue */
11636         }
11637
11638         return result;
11639 }
11640
11641 /**
11642  * i40e_pci_error_resume - restart operations after PCI error recovery
11643  * @pdev: PCI device information struct
11644  *
11645  * Called to allow the driver to bring things back up after PCI error
11646  * and/or reset recovery has finished.
11647  **/
11648 static void i40e_pci_error_resume(struct pci_dev *pdev)
11649 {
11650         struct i40e_pf *pf = pci_get_drvdata(pdev);
11651
11652         dev_dbg(&pdev->dev, "%s\n", __func__);
11653         if (test_bit(__I40E_SUSPENDED, &pf->state))
11654                 return;
11655
11656         rtnl_lock();
11657         i40e_handle_reset_warning(pf);
11658         rtnl_unlock();
11659 }
11660
11661 /**
11662  * i40e_shutdown - PCI callback for shutting down
11663  * @pdev: PCI device information struct
11664  **/
11665 static void i40e_shutdown(struct pci_dev *pdev)
11666 {
11667         struct i40e_pf *pf = pci_get_drvdata(pdev);
11668         struct i40e_hw *hw = &pf->hw;
11669
11670         set_bit(__I40E_SUSPENDED, &pf->state);
11671         set_bit(__I40E_DOWN, &pf->state);
11672         rtnl_lock();
11673         i40e_prep_for_reset(pf);
11674         rtnl_unlock();
11675
11676         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11677         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11678
11679         del_timer_sync(&pf->service_timer);
11680         cancel_work_sync(&pf->service_task);
11681         i40e_fdir_teardown(pf);
11682
11683         rtnl_lock();
11684         i40e_prep_for_reset(pf);
11685         rtnl_unlock();
11686
11687         wr32(hw, I40E_PFPM_APM,
11688              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11689         wr32(hw, I40E_PFPM_WUFC,
11690              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11691
11692         i40e_clear_interrupt_scheme(pf);
11693
11694         if (system_state == SYSTEM_POWER_OFF) {
11695                 pci_wake_from_d3(pdev, pf->wol_en);
11696                 pci_set_power_state(pdev, PCI_D3hot);
11697         }
11698 }
11699
11700 #ifdef CONFIG_PM
11701 /**
11702  * i40e_suspend - PCI callback for moving to D3
11703  * @pdev: PCI device information struct
11704  **/
11705 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11706 {
11707         struct i40e_pf *pf = pci_get_drvdata(pdev);
11708         struct i40e_hw *hw = &pf->hw;
11709         int retval = 0;
11710
11711         set_bit(__I40E_SUSPENDED, &pf->state);
11712         set_bit(__I40E_DOWN, &pf->state);
11713
11714         rtnl_lock();
11715         i40e_prep_for_reset(pf);
11716         rtnl_unlock();
11717
11718         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11719         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11720
11721         i40e_stop_misc_vector(pf);
11722
11723         retval = pci_save_state(pdev);
11724         if (retval)
11725                 return retval;
11726
11727         pci_wake_from_d3(pdev, pf->wol_en);
11728         pci_set_power_state(pdev, PCI_D3hot);
11729
11730         return retval;
11731 }
11732
11733 /**
11734  * i40e_resume - PCI callback for waking up from D3
11735  * @pdev: PCI device information struct
11736  **/
11737 static int i40e_resume(struct pci_dev *pdev)
11738 {
11739         struct i40e_pf *pf = pci_get_drvdata(pdev);
11740         u32 err;
11741
11742         pci_set_power_state(pdev, PCI_D0);
11743         pci_restore_state(pdev);
11744         /* pci_restore_state() clears dev->state_saves, so
11745          * call pci_save_state() again to restore it.
11746          */
11747         pci_save_state(pdev);
11748
11749         err = pci_enable_device_mem(pdev);
11750         if (err) {
11751                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11752                 return err;
11753         }
11754         pci_set_master(pdev);
11755
11756         /* no wakeup events while running */
11757         pci_wake_from_d3(pdev, false);
11758
11759         /* handling the reset will rebuild the device state */
11760         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11761                 clear_bit(__I40E_DOWN, &pf->state);
11762                 rtnl_lock();
11763                 i40e_reset_and_rebuild(pf, false);
11764                 rtnl_unlock();
11765         }
11766
11767         return 0;
11768 }
11769
11770 #endif
11771 static const struct pci_error_handlers i40e_err_handler = {
11772         .error_detected = i40e_pci_error_detected,
11773         .slot_reset = i40e_pci_error_slot_reset,
11774         .resume = i40e_pci_error_resume,
11775 };
11776
11777 static struct pci_driver i40e_driver = {
11778         .name     = i40e_driver_name,
11779         .id_table = i40e_pci_tbl,
11780         .probe    = i40e_probe,
11781         .remove   = i40e_remove,
11782 #ifdef CONFIG_PM
11783         .suspend  = i40e_suspend,
11784         .resume   = i40e_resume,
11785 #endif
11786         .shutdown = i40e_shutdown,
11787         .err_handler = &i40e_err_handler,
11788         .sriov_configure = i40e_pci_sriov_configure,
11789 };
11790
11791 /**
11792  * i40e_init_module - Driver registration routine
11793  *
11794  * i40e_init_module is the first routine called when the driver is
11795  * loaded. All it does is register with the PCI subsystem.
11796  **/
11797 static int __init i40e_init_module(void)
11798 {
11799         pr_info("%s: %s - version %s\n", i40e_driver_name,
11800                 i40e_driver_string, i40e_driver_version_str);
11801         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11802
11803         /* we will see if single thread per module is enough for now,
11804          * it can't be any worse than using the system workqueue which
11805          * was already single threaded
11806          */
11807         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
11808                                   i40e_driver_name);
11809         if (!i40e_wq) {
11810                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11811                 return -ENOMEM;
11812         }
11813
11814         i40e_dbg_init();
11815         return pci_register_driver(&i40e_driver);
11816 }
11817 module_init(i40e_init_module);
11818
11819 /**
11820  * i40e_exit_module - Driver exit cleanup routine
11821  *
11822  * i40e_exit_module is called just before the driver is removed
11823  * from memory.
11824  **/
11825 static void __exit i40e_exit_module(void)
11826 {
11827         pci_unregister_driver(&i40e_driver);
11828         destroy_workqueue(i40e_wq);
11829         i40e_dbg_exit();
11830 }
11831 module_exit(i40e_exit_module);