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 2
  43 #define DRV_VERSION_MINOR 1
  44 #define DRV_VERSION_BUILD 7
  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_KX_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  90         /* required last entry */
  91         {0, }
  92 };
  93 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  94
  95 #define I40E_MAX_VF_COUNT 128
  96 static int debug = -1;
  97 module_param(debug, uint, 0);
  98 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  99
 100 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 101 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 102 MODULE_LICENSE("GPL");
 103 MODULE_VERSION(DRV_VERSION);
 104
 105 static struct workqueue_struct *i40e_wq;
 106
 107 /**
 108  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 109  * @hw:   pointer to the HW structure
 110  * @mem:  ptr to mem struct to fill out
 111  * @size: size of memory requested
 112  * @alignment: what to align the allocation to
 113  **/
 114 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 115                             u64 size, u32 alignment)
 116 {
 117         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 118
 119         mem->size = ALIGN(size, alignment);
 120         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 121                                       &mem->pa, GFP_KERNEL);
 122         if (!mem->va)
 123                 return -ENOMEM;
 124
 125         return 0;
 126 }
 127
 128 /**
 129  * i40e_free_dma_mem_d - OS specific memory free for shared code
 130  * @hw:   pointer to the HW structure
 131  * @mem:  ptr to mem struct to free
 132  **/
 133 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 134 {
 135         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 136
 137         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 138         mem->va = NULL;
 139         mem->pa = 0;
 140         mem->size = 0;
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 147  * @hw:   pointer to the HW structure
 148  * @mem:  ptr to mem struct to fill out
 149  * @size: size of memory requested
 150  **/
 151 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 152                              u32 size)
 153 {
 154         mem->size = size;
 155         mem->va = kzalloc(size, GFP_KERNEL);
 156
 157         if (!mem->va)
 158                 return -ENOMEM;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_free_virt_mem_d - OS specific memory free for shared code
 165  * @hw:   pointer to the HW structure
 166  * @mem:  ptr to mem struct to free
 167  **/
 168 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 169 {
 170         /* it's ok to kfree a NULL pointer */
 171         kfree(mem->va);
 172         mem->va = NULL;
 173         mem->size = 0;
 174
 175         return 0;
 176 }
 177
 178 /**
 179  * i40e_get_lump - find a lump of free generic resource
 180  * @pf: board private structure
 181  * @pile: the pile of resource to search
 182  * @needed: the number of items needed
 183  * @id: an owner id to stick on the items assigned
 184  *
 185  * Returns the base item index of the lump, or negative for error
 186  *
 187  * The search_hint trick and lack of advanced fit-finding only work
 188  * because we're highly likely to have all the same size lump requests.
 189  * Linear search time and any fragmentation should be minimal.
 190  **/
 191 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 192                          u16 needed, u16 id)
 193 {
 194         int ret = -ENOMEM;
 195         int i, j;
 196
 197         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 198                 dev_info(&pf->pdev->dev,
 199                          "param err: pile=%p needed=%d id=0x%04x\n",
 200                          pile, needed, id);
 201                 return -EINVAL;
 202         }
 203
 204         /* start the linear search with an imperfect hint */
 205         i = pile->search_hint;
 206         while (i < pile->num_entries) {
 207                 /* skip already allocated entries */
 208                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 209                         i++;
 210                         continue;
 211                 }
 212
 213                 /* do we have enough in this lump? */
 214                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 215                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 216                                 break;
 217                 }
 218
 219                 if (j == needed) {
 220                         /* there was enough, so assign it to the requestor */
 221                         for (j = 0; j < needed; j++)
 222                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 223                         ret = i;
 224                         pile->search_hint = i + j;
 225                         break;
 226                 }
 227
 228                 /* not enough, so skip over it and continue looking */
 229                 i += j;
 230         }
 231
 232         return ret;
 233 }
 234
 235 /**
 236  * i40e_put_lump - return a lump of generic resource
 237  * @pile: the pile of resource to search
 238  * @index: the base item index
 239  * @id: the owner id of the items assigned
 240  *
 241  * Returns the count of items in the lump
 242  **/
 243 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 244 {
 245         int valid_id = (id | I40E_PILE_VALID_BIT);
 246         int count = 0;
 247         int i;
 248
 249         if (!pile || index >= pile->num_entries)
 250                 return -EINVAL;
 251
 252         for (i = index;
 253              i < pile->num_entries && pile->list[i] == valid_id;
 254              i++) {
 255                 pile->list[i] = 0;
 256                 count++;
 257         }
 258
 259         if (count && index < pile->search_hint)
 260                 pile->search_hint = index;
 261
 262         return count;
 263 }
 264
 265 /**
 266  * i40e_find_vsi_from_id - searches for the vsi with the given id
 267  * @pf - the pf structure to search for the vsi
 268  * @id - id of the vsi it is searching for
 269  **/
 270 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 271 {
 272         int i;
 273
 274         for (i = 0; i < pf->num_alloc_vsi; i++)
 275                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 276                         return pf->vsi[i];
 277
 278         return NULL;
 279 }
 280
 281 /**
 282  * i40e_service_event_schedule - Schedule the service task to wake up
 283  * @pf: board private structure
 284  *
 285  * If not already scheduled, this puts the task into the work queue
 286  **/
 287 void i40e_service_event_schedule(struct i40e_pf *pf)
 288 {
 289         if (!test_bit(__I40E_DOWN, &pf->state) &&
 290             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
 291                 queue_work(i40e_wq, &pf->service_task);
 292 }
 293
 294 /**
 295  * i40e_tx_timeout - Respond to a Tx Hang
 296  * @netdev: network interface device structure
 297  *
 298  * If any port has noticed a Tx timeout, it is likely that the whole
 299  * device is munged, not just the one netdev port, so go for the full
 300  * reset.
 301  **/
 302 #ifdef I40E_FCOE
 303 void i40e_tx_timeout(struct net_device *netdev)
 304 #else
 305 static void i40e_tx_timeout(struct net_device *netdev)
 306 #endif
 307 {
 308         struct i40e_netdev_priv *np = netdev_priv(netdev);
 309         struct i40e_vsi *vsi = np->vsi;
 310         struct i40e_pf *pf = vsi->back;
 311         struct i40e_ring *tx_ring = NULL;
 312         unsigned int i, hung_queue = 0;
 313         u32 head, val;
 314
 315         pf->tx_timeout_count++;
 316
 317         /* find the stopped queue the same way the stack does */
 318         for (i = 0; i < netdev->num_tx_queues; i++) {
 319                 struct netdev_queue *q;
 320                 unsigned long trans_start;
 321
 322                 q = netdev_get_tx_queue(netdev, i);
 323                 trans_start = q->trans_start;
 324                 if (netif_xmit_stopped(q) &&
 325                     time_after(jiffies,
 326                                (trans_start + netdev->watchdog_timeo))) {
 327                         hung_queue = i;
 328                         break;
 329                 }
 330         }
 331
 332         if (i == netdev->num_tx_queues) {
 333                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 334         } else {
 335                 /* now that we have an index, find the tx_ring struct */
 336                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 337                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 338                                 if (hung_queue ==
 339                                     vsi->tx_rings[i]->queue_index) {
 340                                         tx_ring = vsi->tx_rings[i];
 341                                         break;
 342                                 }
 343                         }
 344                 }
 345         }
 346
 347         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 348                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 349         else if (time_before(jiffies,
 350                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 351                 return;   /* don't do any new action before the next timeout */
 352
 353         if (tx_ring) {
 354                 head = i40e_get_head(tx_ring);
 355                 /* Read interrupt register */
 356                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 357                         val = rd32(&pf->hw,
 358                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 359                                                 tx_ring->vsi->base_vector - 1));
 360                 else
 361                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 362
 363                 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",
 364                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 365                             head, tx_ring->next_to_use,
 366                             readl(tx_ring->tail), val);
 367         }
 368
 369         pf->tx_timeout_last_recovery = jiffies;
 370         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 371                     pf->tx_timeout_recovery_level, hung_queue);
 372
 373         switch (pf->tx_timeout_recovery_level) {
 374         case 1:
 375                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 376                 break;
 377         case 2:
 378                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 379                 break;
 380         case 3:
 381                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 382                 break;
 383         default:
 384                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 385                 break;
 386         }
 387
 388         i40e_service_event_schedule(pf);
 389         pf->tx_timeout_recovery_level++;
 390 }
 391
 392 /**
 393  * i40e_get_vsi_stats_struct - Get System Network Statistics
 394  * @vsi: the VSI we care about
 395  *
 396  * Returns the address of the device statistics structure.
 397  * The statistics are actually updated from the service task.
 398  **/
 399 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 400 {
 401         return &vsi->net_stats;
 402 }
 403
 404 /**
 405  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 406  * @netdev: network interface device structure
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 #ifndef I40E_FCOE
 412 static
 413 #endif
 414 void i40e_get_netdev_stats_struct(struct net_device *netdev,
 415                                   struct rtnl_link_stats64 *stats)
 416 {
 417         struct i40e_netdev_priv *np = netdev_priv(netdev);
 418         struct i40e_ring *tx_ring, *rx_ring;
 419         struct i40e_vsi *vsi = np->vsi;
 420         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 421         int i;
 422
 423         if (test_bit(__I40E_DOWN, &vsi->state))
 424                 return;
 425
 426         if (!vsi->tx_rings)
 427                 return;
 428
 429         rcu_read_lock();
 430         for (i = 0; i < vsi->num_queue_pairs; i++) {
 431                 u64 bytes, packets;
 432                 unsigned int start;
 433
 434                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 435                 if (!tx_ring)
 436                         continue;
 437
 438                 do {
 439                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 440                         packets = tx_ring->stats.packets;
 441                         bytes   = tx_ring->stats.bytes;
 442                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 443
 444                 stats->tx_packets += packets;
 445                 stats->tx_bytes   += bytes;
 446                 rx_ring = &tx_ring[1];
 447
 448                 do {
 449                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 450                         packets = rx_ring->stats.packets;
 451                         bytes   = rx_ring->stats.bytes;
 452                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 453
 454                 stats->rx_packets += packets;
 455                 stats->rx_bytes   += bytes;
 456         }
 457         rcu_read_unlock();
 458
 459         /* following stats updated by i40e_watchdog_subtask() */
 460         stats->multicast        = vsi_stats->multicast;
 461         stats->tx_errors        = vsi_stats->tx_errors;
 462         stats->tx_dropped       = vsi_stats->tx_dropped;
 463         stats->rx_errors        = vsi_stats->rx_errors;
 464         stats->rx_dropped       = vsi_stats->rx_dropped;
 465         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 466         stats->rx_length_errors = vsi_stats->rx_length_errors;
 467 }
 468
 469 /**
 470  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 471  * @vsi: the VSI to have its stats reset
 472  **/
 473 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 474 {
 475         struct rtnl_link_stats64 *ns;
 476         int i;
 477
 478         if (!vsi)
 479                 return;
 480
 481         ns = i40e_get_vsi_stats_struct(vsi);
 482         memset(ns, 0, sizeof(*ns));
 483         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 484         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 485         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 486         if (vsi->rx_rings && vsi->rx_rings[0]) {
 487                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 488                         memset(&vsi->rx_rings[i]->stats, 0,
 489                                sizeof(vsi->rx_rings[i]->stats));
 490                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 491                                sizeof(vsi->rx_rings[i]->rx_stats));
 492                         memset(&vsi->tx_rings[i]->stats, 0,
 493                                sizeof(vsi->tx_rings[i]->stats));
 494                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 495                                sizeof(vsi->tx_rings[i]->tx_stats));
 496                 }
 497         }
 498         vsi->stat_offsets_loaded = false;
 499 }
 500
 501 /**
 502  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 503  * @pf: the PF to be reset
 504  **/
 505 void i40e_pf_reset_stats(struct i40e_pf *pf)
 506 {
 507         int i;
 508
 509         memset(&pf->stats, 0, sizeof(pf->stats));
 510         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 511         pf->stat_offsets_loaded = false;
 512
 513         for (i = 0; i < I40E_MAX_VEB; i++) {
 514                 if (pf->veb[i]) {
 515                         memset(&pf->veb[i]->stats, 0,
 516                                sizeof(pf->veb[i]->stats));
 517                         memset(&pf->veb[i]->stats_offsets, 0,
 518                                sizeof(pf->veb[i]->stats_offsets));
 519                         pf->veb[i]->stat_offsets_loaded = false;
 520                 }
 521         }
 522         pf->hw_csum_rx_error = 0;
 523 }
 524
 525 /**
 526  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 527  * @hw: ptr to the hardware info
 528  * @hireg: the high 32 bit reg to read
 529  * @loreg: the low 32 bit reg to read
 530  * @offset_loaded: has the initial offset been loaded yet
 531  * @offset: ptr to current offset value
 532  * @stat: ptr to the stat
 533  *
 534  * Since the device stats are not reset at PFReset, they likely will not
 535  * be zeroed when the driver starts.  We'll save the first values read
 536  * and use them as offsets to be subtracted from the raw values in order
 537  * to report stats that count from zero.  In the process, we also manage
 538  * the potential roll-over.
 539  **/
 540 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 541                                bool offset_loaded, u64 *offset, u64 *stat)
 542 {
 543         u64 new_data;
 544
 545         if (hw->device_id == I40E_DEV_ID_QEMU) {
 546                 new_data = rd32(hw, loreg);
 547                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 548         } else {
 549                 new_data = rd64(hw, loreg);
 550         }
 551         if (!offset_loaded)
 552                 *offset = new_data;
 553         if (likely(new_data >= *offset))
 554                 *stat = new_data - *offset;
 555         else
 556                 *stat = (new_data + BIT_ULL(48)) - *offset;
 557         *stat &= 0xFFFFFFFFFFFFULL;
 558 }
 559
 560 /**
 561  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 562  * @hw: ptr to the hardware info
 563  * @reg: the hw reg to read
 564  * @offset_loaded: has the initial offset been loaded yet
 565  * @offset: ptr to current offset value
 566  * @stat: ptr to the stat
 567  **/
 568 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 569                                bool offset_loaded, u64 *offset, u64 *stat)
 570 {
 571         u32 new_data;
 572
 573         new_data = rd32(hw, reg);
 574         if (!offset_loaded)
 575                 *offset = new_data;
 576         if (likely(new_data >= *offset))
 577                 *stat = (u32)(new_data - *offset);
 578         else
 579                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 580 }
 581
 582 /**
 583  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 584  * @vsi: the VSI to be updated
 585  **/
 586 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 587 {
 588         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 589         struct i40e_pf *pf = vsi->back;
 590         struct i40e_hw *hw = &pf->hw;
 591         struct i40e_eth_stats *oes;
 592         struct i40e_eth_stats *es;     /* device's eth stats */
 593
 594         es = &vsi->eth_stats;
 595         oes = &vsi->eth_stats_offsets;
 596
 597         /* Gather up the stats that the hw collects */
 598         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 599                            vsi->stat_offsets_loaded,
 600                            &oes->tx_errors, &es->tx_errors);
 601         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 602                            vsi->stat_offsets_loaded,
 603                            &oes->rx_discards, &es->rx_discards);
 604         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 605                            vsi->stat_offsets_loaded,
 606                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 607         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->tx_errors, &es->tx_errors);
 610
 611         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 612                            I40E_GLV_GORCL(stat_idx),
 613                            vsi->stat_offsets_loaded,
 614                            &oes->rx_bytes, &es->rx_bytes);
 615         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 616                            I40E_GLV_UPRCL(stat_idx),
 617                            vsi->stat_offsets_loaded,
 618                            &oes->rx_unicast, &es->rx_unicast);
 619         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 620                            I40E_GLV_MPRCL(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_multicast, &es->rx_multicast);
 623         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 624                            I40E_GLV_BPRCL(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->rx_broadcast, &es->rx_broadcast);
 627
 628         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 629                            I40E_GLV_GOTCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->tx_bytes, &es->tx_bytes);
 632         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 633                            I40E_GLV_UPTCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->tx_unicast, &es->tx_unicast);
 636         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 637                            I40E_GLV_MPTCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->tx_multicast, &es->tx_multicast);
 640         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 641                            I40E_GLV_BPTCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->tx_broadcast, &es->tx_broadcast);
 644         vsi->stat_offsets_loaded = true;
 645 }
 646
 647 /**
 648  * i40e_update_veb_stats - Update Switch component statistics
 649  * @veb: the VEB being updated
 650  **/
 651 static void i40e_update_veb_stats(struct i40e_veb *veb)
 652 {
 653         struct i40e_pf *pf = veb->pf;
 654         struct i40e_hw *hw = &pf->hw;
 655         struct i40e_eth_stats *oes;
 656         struct i40e_eth_stats *es;     /* device's eth stats */
 657         struct i40e_veb_tc_stats *veb_oes;
 658         struct i40e_veb_tc_stats *veb_es;
 659         int i, idx = 0;
 660
 661         idx = veb->stats_idx;
 662         es = &veb->stats;
 663         oes = &veb->stats_offsets;
 664         veb_es = &veb->tc_stats;
 665         veb_oes = &veb->tc_stats_offsets;
 666
 667         /* Gather up the stats that the hw collects */
 668         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 669                            veb->stat_offsets_loaded,
 670                            &oes->tx_discards, &es->tx_discards);
 671         if (hw->revision_id > 0)
 672                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 673                                    veb->stat_offsets_loaded,
 674                                    &oes->rx_unknown_protocol,
 675                                    &es->rx_unknown_protocol);
 676         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 677                            veb->stat_offsets_loaded,
 678                            &oes->rx_bytes, &es->rx_bytes);
 679         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 680                            veb->stat_offsets_loaded,
 681                            &oes->rx_unicast, &es->rx_unicast);
 682         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 683                            veb->stat_offsets_loaded,
 684                            &oes->rx_multicast, &es->rx_multicast);
 685         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->rx_broadcast, &es->rx_broadcast);
 688
 689         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->tx_bytes, &es->tx_bytes);
 692         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->tx_unicast, &es->tx_unicast);
 695         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->tx_multicast, &es->tx_multicast);
 698         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->tx_broadcast, &es->tx_broadcast);
 701         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 702                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 703                                    I40E_GLVEBTC_RPCL(i, idx),
 704                                    veb->stat_offsets_loaded,
 705                                    &veb_oes->tc_rx_packets[i],
 706                                    &veb_es->tc_rx_packets[i]);
 707                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 708                                    I40E_GLVEBTC_RBCL(i, idx),
 709                                    veb->stat_offsets_loaded,
 710                                    &veb_oes->tc_rx_bytes[i],
 711                                    &veb_es->tc_rx_bytes[i]);
 712                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 713                                    I40E_GLVEBTC_TPCL(i, idx),
 714                                    veb->stat_offsets_loaded,
 715                                    &veb_oes->tc_tx_packets[i],
 716                                    &veb_es->tc_tx_packets[i]);
 717                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 718                                    I40E_GLVEBTC_TBCL(i, idx),
 719                                    veb->stat_offsets_loaded,
 720                                    &veb_oes->tc_tx_bytes[i],
 721                                    &veb_es->tc_tx_bytes[i]);
 722         }
 723         veb->stat_offsets_loaded = true;
 724 }
 725
 726 #ifdef I40E_FCOE
 727 /**
 728  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 729  * @vsi: the VSI that is capable of doing FCoE
 730  **/
 731 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 732 {
 733         struct i40e_pf *pf = vsi->back;
 734         struct i40e_hw *hw = &pf->hw;
 735         struct i40e_fcoe_stats *ofs;
 736         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 737         int idx;
 738
 739         if (vsi->type != I40E_VSI_FCOE)
 740                 return;
 741
 742         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 743         fs = &vsi->fcoe_stats;
 744         ofs = &vsi->fcoe_stats_offsets;
 745
 746         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 747                            vsi->fcoe_stat_offsets_loaded,
 748                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 749         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 750                            vsi->fcoe_stat_offsets_loaded,
 751                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 752         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 753                            vsi->fcoe_stat_offsets_loaded,
 754                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 755         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 756                            vsi->fcoe_stat_offsets_loaded,
 757                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 758         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 759                            vsi->fcoe_stat_offsets_loaded,
 760                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 761         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 762                            vsi->fcoe_stat_offsets_loaded,
 763                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 764         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 765                            vsi->fcoe_stat_offsets_loaded,
 766                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 767         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 768                            vsi->fcoe_stat_offsets_loaded,
 769                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 770
 771         vsi->fcoe_stat_offsets_loaded = true;
 772 }
 773
 774 #endif
 775 /**
 776  * i40e_update_vsi_stats - Update the vsi statistics counters.
 777  * @vsi: the VSI to be updated
 778  *
 779  * There are a few instances where we store the same stat in a
 780  * couple of different structs.  This is partly because we have
 781  * the netdev stats that need to be filled out, which is slightly
 782  * different from the "eth_stats" defined by the chip and used in
 783  * VF communications.  We sort it out here.
 784  **/
 785 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 786 {
 787         struct i40e_pf *pf = vsi->back;
 788         struct rtnl_link_stats64 *ons;
 789         struct rtnl_link_stats64 *ns;   /* netdev stats */
 790         struct i40e_eth_stats *oes;
 791         struct i40e_eth_stats *es;     /* device's eth stats */
 792         u32 tx_restart, tx_busy;
 793         u64 tx_lost_interrupt;
 794         struct i40e_ring *p;
 795         u32 rx_page, rx_buf;
 796         u64 bytes, packets;
 797         unsigned int start;
 798         u64 tx_linearize;
 799         u64 tx_force_wb;
 800         u64 rx_p, rx_b;
 801         u64 tx_p, tx_b;
 802         u16 q;
 803
 804         if (test_bit(__I40E_DOWN, &vsi->state) ||
 805             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 806                 return;
 807
 808         ns = i40e_get_vsi_stats_struct(vsi);
 809         ons = &vsi->net_stats_offsets;
 810         es = &vsi->eth_stats;
 811         oes = &vsi->eth_stats_offsets;
 812
 813         /* Gather up the netdev and vsi stats that the driver collects
 814          * on the fly during packet processing
 815          */
 816         rx_b = rx_p = 0;
 817         tx_b = tx_p = 0;
 818         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 819         tx_lost_interrupt = 0;
 820         rx_page = 0;
 821         rx_buf = 0;
 822         rcu_read_lock();
 823         for (q = 0; q < vsi->num_queue_pairs; q++) {
 824                 /* locate Tx ring */
 825                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 826
 827                 do {
 828                         start = u64_stats_fetch_begin_irq(&p->syncp);
 829                         packets = p->stats.packets;
 830                         bytes = p->stats.bytes;
 831                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 832                 tx_b += bytes;
 833                 tx_p += packets;
 834                 tx_restart += p->tx_stats.restart_queue;
 835                 tx_busy += p->tx_stats.tx_busy;
 836                 tx_linearize += p->tx_stats.tx_linearize;
 837                 tx_force_wb += p->tx_stats.tx_force_wb;
 838                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 839
 840                 /* Rx queue is part of the same block as Tx queue */
 841                 p = &p[1];
 842                 do {
 843                         start = u64_stats_fetch_begin_irq(&p->syncp);
 844                         packets = p->stats.packets;
 845                         bytes = p->stats.bytes;
 846                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 847                 rx_b += bytes;
 848                 rx_p += packets;
 849                 rx_buf += p->rx_stats.alloc_buff_failed;
 850                 rx_page += p->rx_stats.alloc_page_failed;
 851         }
 852         rcu_read_unlock();
 853         vsi->tx_restart = tx_restart;
 854         vsi->tx_busy = tx_busy;
 855         vsi->tx_linearize = tx_linearize;
 856         vsi->tx_force_wb = tx_force_wb;
 857         vsi->tx_lost_interrupt = tx_lost_interrupt;
 858         vsi->rx_page_failed = rx_page;
 859         vsi->rx_buf_failed = rx_buf;
 860
 861         ns->rx_packets = rx_p;
 862         ns->rx_bytes = rx_b;
 863         ns->tx_packets = tx_p;
 864         ns->tx_bytes = tx_b;
 865
 866         /* update netdev stats from eth stats */
 867         i40e_update_eth_stats(vsi);
 868         ons->tx_errors = oes->tx_errors;
 869         ns->tx_errors = es->tx_errors;
 870         ons->multicast = oes->rx_multicast;
 871         ns->multicast = es->rx_multicast;
 872         ons->rx_dropped = oes->rx_discards;
 873         ns->rx_dropped = es->rx_discards;
 874         ons->tx_dropped = oes->tx_discards;
 875         ns->tx_dropped = es->tx_discards;
 876
 877         /* pull in a couple PF stats if this is the main vsi */
 878         if (vsi == pf->vsi[pf->lan_vsi]) {
 879                 ns->rx_crc_errors = pf->stats.crc_errors;
 880                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 881                 ns->rx_length_errors = pf->stats.rx_length_errors;
 882         }
 883 }
 884
 885 /**
 886  * i40e_update_pf_stats - Update the PF statistics counters.
 887  * @pf: the PF to be updated
 888  **/
 889 static void i40e_update_pf_stats(struct i40e_pf *pf)
 890 {
 891         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 892         struct i40e_hw_port_stats *nsd = &pf->stats;
 893         struct i40e_hw *hw = &pf->hw;
 894         u32 val;
 895         int i;
 896
 897         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 898                            I40E_GLPRT_GORCL(hw->port),
 899                            pf->stat_offsets_loaded,
 900                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 901         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 902                            I40E_GLPRT_GOTCL(hw->port),
 903                            pf->stat_offsets_loaded,
 904                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 905         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 906                            pf->stat_offsets_loaded,
 907                            &osd->eth.rx_discards,
 908                            &nsd->eth.rx_discards);
 909         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 910                            I40E_GLPRT_UPRCL(hw->port),
 911                            pf->stat_offsets_loaded,
 912                            &osd->eth.rx_unicast,
 913                            &nsd->eth.rx_unicast);
 914         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 915                            I40E_GLPRT_MPRCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.rx_multicast,
 918                            &nsd->eth.rx_multicast);
 919         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 920                            I40E_GLPRT_BPRCL(hw->port),
 921                            pf->stat_offsets_loaded,
 922                            &osd->eth.rx_broadcast,
 923                            &nsd->eth.rx_broadcast);
 924         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 925                            I40E_GLPRT_UPTCL(hw->port),
 926                            pf->stat_offsets_loaded,
 927                            &osd->eth.tx_unicast,
 928                            &nsd->eth.tx_unicast);
 929         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 930                            I40E_GLPRT_MPTCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.tx_multicast,
 933                            &nsd->eth.tx_multicast);
 934         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 935                            I40E_GLPRT_BPTCL(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.tx_broadcast,
 938                            &nsd->eth.tx_broadcast);
 939
 940         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->tx_dropped_link_down,
 943                            &nsd->tx_dropped_link_down);
 944
 945         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->crc_errors, &nsd->crc_errors);
 948
 949         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 950                            pf->stat_offsets_loaded,
 951                            &osd->illegal_bytes, &nsd->illegal_bytes);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->mac_local_faults,
 956                            &nsd->mac_local_faults);
 957         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->mac_remote_faults,
 960                            &nsd->mac_remote_faults);
 961
 962         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->rx_length_errors,
 965                            &nsd->rx_length_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->link_xon_rx, &nsd->link_xon_rx);
 970         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->link_xon_tx, &nsd->link_xon_tx);
 973         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 976         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 979
 980         for (i = 0; i < 8; i++) {
 981                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 982                                    pf->stat_offsets_loaded,
 983                                    &osd->priority_xoff_rx[i],
 984                                    &nsd->priority_xoff_rx[i]);
 985                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 986                                    pf->stat_offsets_loaded,
 987                                    &osd->priority_xon_rx[i],
 988                                    &nsd->priority_xon_rx[i]);
 989                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 990                                    pf->stat_offsets_loaded,
 991                                    &osd->priority_xon_tx[i],
 992                                    &nsd->priority_xon_tx[i]);
 993                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 994                                    pf->stat_offsets_loaded,
 995                                    &osd->priority_xoff_tx[i],
 996                                    &nsd->priority_xoff_tx[i]);
 997                 i40e_stat_update32(hw,
 998                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 999                                    pf->stat_offsets_loaded,
1000                                    &osd->priority_xon_2_xoff[i],
1001                                    &nsd->priority_xon_2_xoff[i]);
1002         }
1003
1004         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1005                            I40E_GLPRT_PRC64L(hw->port),
1006                            pf->stat_offsets_loaded,
1007                            &osd->rx_size_64, &nsd->rx_size_64);
1008         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1009                            I40E_GLPRT_PRC127L(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->rx_size_127, &nsd->rx_size_127);
1012         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1013                            I40E_GLPRT_PRC255L(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->rx_size_255, &nsd->rx_size_255);
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1017                            I40E_GLPRT_PRC511L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_511, &nsd->rx_size_511);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1021                            I40E_GLPRT_PRC1023L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_1023, &nsd->rx_size_1023);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1025                            I40E_GLPRT_PRC1522L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_1522, &nsd->rx_size_1522);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1029                            I40E_GLPRT_PRC9522L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_big, &nsd->rx_size_big);
1032
1033         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1034                            I40E_GLPRT_PTC64L(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->tx_size_64, &nsd->tx_size_64);
1037         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1038                            I40E_GLPRT_PTC127L(hw->port),
1039                            pf->stat_offsets_loaded,
1040                            &osd->tx_size_127, &nsd->tx_size_127);
1041         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1042                            I40E_GLPRT_PTC255L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->tx_size_255, &nsd->tx_size_255);
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1046                            I40E_GLPRT_PTC511L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_511, &nsd->tx_size_511);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1050                            I40E_GLPRT_PTC1023L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_1023, &nsd->tx_size_1023);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1054                            I40E_GLPRT_PTC1522L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_1522, &nsd->tx_size_1522);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1058                            I40E_GLPRT_PTC9522L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_big, &nsd->tx_size_big);
1061
1062         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->rx_undersize, &nsd->rx_undersize);
1065         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->rx_fragments, &nsd->rx_fragments);
1068         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->rx_oversize, &nsd->rx_oversize);
1071         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->rx_jabber, &nsd->rx_jabber);
1074
1075         /* FDIR stats */
1076         i40e_stat_update32(hw,
1077                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1078                            pf->stat_offsets_loaded,
1079                            &osd->fd_atr_match, &nsd->fd_atr_match);
1080         i40e_stat_update32(hw,
1081                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1082                            pf->stat_offsets_loaded,
1083                            &osd->fd_sb_match, &nsd->fd_sb_match);
1084         i40e_stat_update32(hw,
1085                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1086                       pf->stat_offsets_loaded,
1087                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1088
1089         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1090         nsd->tx_lpi_status =
1091                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1092                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1093         nsd->rx_lpi_status =
1094                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1095                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1096         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1097                            pf->stat_offsets_loaded,
1098                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1099         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1100                            pf->stat_offsets_loaded,
1101                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1102
1103         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1104             !(pf->hw_disabled_flags & I40E_FLAG_FD_SB_ENABLED))
1105                 nsd->fd_sb_status = true;
1106         else
1107                 nsd->fd_sb_status = false;
1108
1109         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1110             !(pf->hw_disabled_flags & I40E_FLAG_FD_ATR_ENABLED))
1111                 nsd->fd_atr_status = true;
1112         else
1113                 nsd->fd_atr_status = false;
1114
1115         pf->stat_offsets_loaded = true;
1116 }
1117
1118 /**
1119  * i40e_update_stats - Update the various statistics counters.
1120  * @vsi: the VSI to be updated
1121  *
1122  * Update the various stats for this VSI and its related entities.
1123  **/
1124 void i40e_update_stats(struct i40e_vsi *vsi)
1125 {
1126         struct i40e_pf *pf = vsi->back;
1127
1128         if (vsi == pf->vsi[pf->lan_vsi])
1129                 i40e_update_pf_stats(pf);
1130
1131         i40e_update_vsi_stats(vsi);
1132 #ifdef I40E_FCOE
1133         i40e_update_fcoe_stats(vsi);
1134 #endif
1135 }
1136
1137 /**
1138  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1139  * @vsi: the VSI to be searched
1140  * @macaddr: the MAC address
1141  * @vlan: the vlan
1142  *
1143  * Returns ptr to the filter object or NULL
1144  **/
1145 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1146                                                 const u8 *macaddr, s16 vlan)
1147 {
1148         struct i40e_mac_filter *f;
1149         u64 key;
1150
1151         if (!vsi || !macaddr)
1152                 return NULL;
1153
1154         key = i40e_addr_to_hkey(macaddr);
1155         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1156                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1157                     (vlan == f->vlan))
1158                         return f;
1159         }
1160         return NULL;
1161 }
1162
1163 /**
1164  * i40e_find_mac - Find a mac addr in the macvlan filters list
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address we are searching for
1167  *
1168  * Returns the first filter with the provided MAC address or NULL if
1169  * MAC address was not found
1170  **/
1171 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1172 {
1173         struct i40e_mac_filter *f;
1174         u64 key;
1175
1176         if (!vsi || !macaddr)
1177                 return NULL;
1178
1179         key = i40e_addr_to_hkey(macaddr);
1180         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1181                 if ((ether_addr_equal(macaddr, f->macaddr)))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         /* If we have a PVID, always operate in VLAN mode */
1196         if (vsi->info.pvid)
1197                 return true;
1198
1199         /* We need to operate in VLAN mode whenever we have any filters with
1200          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1201          * time, incurring search cost repeatedly. However, we can notice two
1202          * things:
1203          *
1204          * 1) the only place where we can gain a VLAN filter is in
1205          *    i40e_add_filter.
1206          *
1207          * 2) the only place where filters are actually removed is in
1208          *    i40e_sync_filters_subtask.
1209          *
1210          * Thus, we can simply use a boolean value, has_vlan_filters which we
1211          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1212          * we have to perform the full search after deleting filters in
1213          * i40e_sync_filters_subtask, but we already have to search
1214          * filters here and can perform the check at the same time. This
1215          * results in avoiding embedding a loop for VLAN mode inside another
1216          * loop over all the filters, and should maintain correctness as noted
1217          * above.
1218          */
1219         return vsi->has_vlan_filter;
1220 }
1221
1222 /**
1223  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1224  * @vsi: the VSI to configure
1225  * @tmp_add_list: list of filters ready to be added
1226  * @tmp_del_list: list of filters ready to be deleted
1227  * @vlan_filters: the number of active VLAN filters
1228  *
1229  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1230  * behave as expected. If we have any active VLAN filters remaining or about
1231  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1232  * so that they only match against untagged traffic. If we no longer have any
1233  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1234  * so that they match against both tagged and untagged traffic. In this way,
1235  * we ensure that we correctly receive the desired traffic. This ensures that
1236  * when we have an active VLAN we will receive only untagged traffic and
1237  * traffic matching active VLANs. If we have no active VLANs then we will
1238  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1239  *
1240  * Finally, in a similar fashion, this function also corrects filters when
1241  * there is an active PVID assigned to this VSI.
1242  *
1243  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1244  *
1245  * This function is only expected to be called from within
1246  * i40e_sync_vsi_filters.
1247  *
1248  * NOTE: This function expects to be called while under the
1249  * mac_filter_hash_lock
1250  */
1251 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1252                                          struct hlist_head *tmp_add_list,
1253                                          struct hlist_head *tmp_del_list,
1254                                          int vlan_filters)
1255 {
1256         s16 pvid = le16_to_cpu(vsi->info.pvid);
1257         struct i40e_mac_filter *f, *add_head;
1258         struct i40e_new_mac_filter *new;
1259         struct hlist_node *h;
1260         int bkt, new_vlan;
1261
1262         /* To determine if a particular filter needs to be replaced we
1263          * have the three following conditions:
1264          *
1265          * a) if we have a PVID assigned, then all filters which are
1266          *    not marked as VLAN=PVID must be replaced with filters that
1267          *    are.
1268          * b) otherwise, if we have any active VLANS, all filters
1269          *    which are marked as VLAN=-1 must be replaced with
1270          *    filters marked as VLAN=0
1271          * c) finally, if we do not have any active VLANS, all filters
1272          *    which are marked as VLAN=0 must be replaced with filters
1273          *    marked as VLAN=-1
1274          */
1275
1276         /* Update the filters about to be added in place */
1277         hlist_for_each_entry(new, tmp_add_list, hlist) {
1278                 if (pvid && new->f->vlan != pvid)
1279                         new->f->vlan = pvid;
1280                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1281                         new->f->vlan = 0;
1282                 else if (!vlan_filters && new->f->vlan == 0)
1283                         new->f->vlan = I40E_VLAN_ANY;
1284         }
1285
1286         /* Update the remaining active filters */
1287         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1288                 /* Combine the checks for whether a filter needs to be changed
1289                  * and then determine the new VLAN inside the if block, in
1290                  * order to avoid duplicating code for adding the new filter
1291                  * then deleting the old filter.
1292                  */
1293                 if ((pvid && f->vlan != pvid) ||
1294                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1295                     (!vlan_filters && f->vlan == 0)) {
1296                         /* Determine the new vlan we will be adding */
1297                         if (pvid)
1298                                 new_vlan = pvid;
1299                         else if (vlan_filters)
1300                                 new_vlan = 0;
1301                         else
1302                                 new_vlan = I40E_VLAN_ANY;
1303
1304                         /* Create the new filter */
1305                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1306                         if (!add_head)
1307                                 return -ENOMEM;
1308
1309                         /* Create a temporary i40e_new_mac_filter */
1310                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1311                         if (!new)
1312                                 return -ENOMEM;
1313
1314                         new->f = add_head;
1315                         new->state = add_head->state;
1316
1317                         /* Add the new filter to the tmp list */
1318                         hlist_add_head(&new->hlist, tmp_add_list);
1319
1320                         /* Put the original filter into the delete list */
1321                         f->state = I40E_FILTER_REMOVE;
1322                         hash_del(&f->hlist);
1323                         hlist_add_head(&f->hlist, tmp_del_list);
1324                 }
1325         }
1326
1327         vsi->has_vlan_filter = !!vlan_filters;
1328
1329         return 0;
1330 }
1331
1332 /**
1333  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1334  * @vsi: the PF Main VSI - inappropriate for any other VSI
1335  * @macaddr: the MAC address
1336  *
1337  * Remove whatever filter the firmware set up so the driver can manage
1338  * its own filtering intelligently.
1339  **/
1340 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1341 {
1342         struct i40e_aqc_remove_macvlan_element_data element;
1343         struct i40e_pf *pf = vsi->back;
1344
1345         /* Only appropriate for the PF main VSI */
1346         if (vsi->type != I40E_VSI_MAIN)
1347                 return;
1348
1349         memset(&element, 0, sizeof(element));
1350         ether_addr_copy(element.mac_addr, macaddr);
1351         element.vlan_tag = 0;
1352         /* Ignore error returns, some firmware does it this way... */
1353         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1354         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1355
1356         memset(&element, 0, sizeof(element));
1357         ether_addr_copy(element.mac_addr, macaddr);
1358         element.vlan_tag = 0;
1359         /* ...and some firmware does it this way. */
1360         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1361                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1362         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1363 }
1364
1365 /**
1366  * i40e_add_filter - Add a mac/vlan filter to the VSI
1367  * @vsi: the VSI to be searched
1368  * @macaddr: the MAC address
1369  * @vlan: the vlan
1370  *
1371  * Returns ptr to the filter object or NULL when no memory available.
1372  *
1373  * NOTE: This function is expected to be called with mac_filter_hash_lock
1374  * being held.
1375  **/
1376 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1377                                         const u8 *macaddr, s16 vlan)
1378 {
1379         struct i40e_mac_filter *f;
1380         u64 key;
1381
1382         if (!vsi || !macaddr)
1383                 return NULL;
1384
1385         f = i40e_find_filter(vsi, macaddr, vlan);
1386         if (!f) {
1387                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1388                 if (!f)
1389                         return NULL;
1390
1391                 /* Update the boolean indicating if we need to function in
1392                  * VLAN mode.
1393                  */
1394                 if (vlan >= 0)
1395                         vsi->has_vlan_filter = true;
1396
1397                 ether_addr_copy(f->macaddr, macaddr);
1398                 f->vlan = vlan;
1399                 /* If we're in overflow promisc mode, set the state directly
1400                  * to failed, so we don't bother to try sending the filter
1401                  * to the hardware.
1402                  */
1403                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1404                         f->state = I40E_FILTER_FAILED;
1405                 else
1406                         f->state = I40E_FILTER_NEW;
1407                 INIT_HLIST_NODE(&f->hlist);
1408
1409                 key = i40e_addr_to_hkey(macaddr);
1410                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1411
1412                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1413                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1414         }
1415
1416         /* If we're asked to add a filter that has been marked for removal, it
1417          * is safe to simply restore it to active state. __i40e_del_filter
1418          * will have simply deleted any filters which were previously marked
1419          * NEW or FAILED, so if it is currently marked REMOVE it must have
1420          * previously been ACTIVE. Since we haven't yet run the sync filters
1421          * task, just restore this filter to the ACTIVE state so that the
1422          * sync task leaves it in place
1423          */
1424         if (f->state == I40E_FILTER_REMOVE)
1425                 f->state = I40E_FILTER_ACTIVE;
1426
1427         return f;
1428 }
1429
1430 /**
1431  * __i40e_del_filter - Remove a specific filter from the VSI
1432  * @vsi: VSI to remove from
1433  * @f: the filter to remove from the list
1434  *
1435  * This function should be called instead of i40e_del_filter only if you know
1436  * the exact filter you will remove already, such as via i40e_find_filter or
1437  * i40e_find_mac.
1438  *
1439  * NOTE: This function is expected to be called with mac_filter_hash_lock
1440  * being held.
1441  * ANOTHER NOTE: This function MUST be called from within the context of
1442  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1443  * instead of list_for_each_entry().
1444  **/
1445 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1446 {
1447         if (!f)
1448                 return;
1449
1450         /* If the filter was never added to firmware then we can just delete it
1451          * directly and we don't want to set the status to remove or else an
1452          * admin queue command will unnecessarily fire.
1453          */
1454         if ((f->state == I40E_FILTER_FAILED) ||
1455             (f->state == I40E_FILTER_NEW)) {
1456                 hash_del(&f->hlist);
1457                 kfree(f);
1458         } else {
1459                 f->state = I40E_FILTER_REMOVE;
1460         }
1461
1462         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1463         vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1464 }
1465
1466 /**
1467  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1468  * @vsi: the VSI to be searched
1469  * @macaddr: the MAC address
1470  * @vlan: the VLAN
1471  *
1472  * NOTE: This function is expected to be called with mac_filter_hash_lock
1473  * being held.
1474  * ANOTHER NOTE: This function MUST be called from within the context of
1475  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1476  * instead of list_for_each_entry().
1477  **/
1478 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1479 {
1480         struct i40e_mac_filter *f;
1481
1482         if (!vsi || !macaddr)
1483                 return;
1484
1485         f = i40e_find_filter(vsi, macaddr, vlan);
1486         __i40e_del_filter(vsi, f);
1487 }
1488
1489 /**
1490  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1491  * @vsi: the VSI to be searched
1492  * @macaddr: the mac address to be filtered
1493  *
1494  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1495  * go through all the macvlan filters and add a macvlan filter for each
1496  * unique vlan that already exists. If a PVID has been assigned, instead only
1497  * add the macaddr to that VLAN.
1498  *
1499  * Returns last filter added on success, else NULL
1500  **/
1501 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1502                                             const u8 *macaddr)
1503 {
1504         struct i40e_mac_filter *f, *add = NULL;
1505         struct hlist_node *h;
1506         int bkt;
1507
1508         if (vsi->info.pvid)
1509                 return i40e_add_filter(vsi, macaddr,
1510                                        le16_to_cpu(vsi->info.pvid));
1511
1512         if (!i40e_is_vsi_in_vlan(vsi))
1513                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1514
1515         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1516                 if (f->state == I40E_FILTER_REMOVE)
1517                         continue;
1518                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1519                 if (!add)
1520                         return NULL;
1521         }
1522
1523         return add;
1524 }
1525
1526 /**
1527  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1528  * @vsi: the VSI to be searched
1529  * @macaddr: the mac address to be removed
1530  *
1531  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1532  * associated with.
1533  *
1534  * Returns 0 for success, or error
1535  **/
1536 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1537 {
1538         struct i40e_mac_filter *f;
1539         struct hlist_node *h;
1540         bool found = false;
1541         int bkt;
1542
1543         WARN(!spin_is_locked(&vsi->mac_filter_hash_lock),
1544              "Missing mac_filter_hash_lock\n");
1545         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1546                 if (ether_addr_equal(macaddr, f->macaddr)) {
1547                         __i40e_del_filter(vsi, f);
1548                         found = true;
1549                 }
1550         }
1551
1552         if (found)
1553                 return 0;
1554         else
1555                 return -ENOENT;
1556 }
1557
1558 /**
1559  * i40e_set_mac - NDO callback to set mac address
1560  * @netdev: network interface device structure
1561  * @p: pointer to an address structure
1562  *
1563  * Returns 0 on success, negative on failure
1564  **/
1565 #ifdef I40E_FCOE
1566 int i40e_set_mac(struct net_device *netdev, void *p)
1567 #else
1568 static int i40e_set_mac(struct net_device *netdev, void *p)
1569 #endif
1570 {
1571         struct i40e_netdev_priv *np = netdev_priv(netdev);
1572         struct i40e_vsi *vsi = np->vsi;
1573         struct i40e_pf *pf = vsi->back;
1574         struct i40e_hw *hw = &pf->hw;
1575         struct sockaddr *addr = p;
1576
1577         if (!is_valid_ether_addr(addr->sa_data))
1578                 return -EADDRNOTAVAIL;
1579
1580         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1581                 netdev_info(netdev, "already using mac address %pM\n",
1582                             addr->sa_data);
1583                 return 0;
1584         }
1585
1586         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1587             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1588                 return -EADDRNOTAVAIL;
1589
1590         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1591                 netdev_info(netdev, "returning to hw mac address %pM\n",
1592                             hw->mac.addr);
1593         else
1594                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1595
1596         spin_lock_bh(&vsi->mac_filter_hash_lock);
1597         i40e_del_mac_filter(vsi, netdev->dev_addr);
1598         i40e_add_mac_filter(vsi, addr->sa_data);
1599         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1600         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1601         if (vsi->type == I40E_VSI_MAIN) {
1602                 i40e_status ret;
1603
1604                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1605                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1606                                                 addr->sa_data, NULL);
1607                 if (ret)
1608                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1609                                     i40e_stat_str(hw, ret),
1610                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1611         }
1612
1613         /* schedule our worker thread which will take care of
1614          * applying the new filter changes
1615          */
1616         i40e_service_event_schedule(vsi->back);
1617         return 0;
1618 }
1619
1620 /**
1621  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1622  * @vsi: the VSI being setup
1623  * @ctxt: VSI context structure
1624  * @enabled_tc: Enabled TCs bitmap
1625  * @is_add: True if called before Add VSI
1626  *
1627  * Setup VSI queue mapping for enabled traffic classes.
1628  **/
1629 #ifdef I40E_FCOE
1630 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1631                               struct i40e_vsi_context *ctxt,
1632                               u8 enabled_tc,
1633                               bool is_add)
1634 #else
1635 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1636                                      struct i40e_vsi_context *ctxt,
1637                                      u8 enabled_tc,
1638                                      bool is_add)
1639 #endif
1640 {
1641         struct i40e_pf *pf = vsi->back;
1642         u16 sections = 0;
1643         u8 netdev_tc = 0;
1644         u16 numtc = 0;
1645         u16 qcount;
1646         u8 offset;
1647         u16 qmap;
1648         int i;
1649         u16 num_tc_qps = 0;
1650
1651         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1652         offset = 0;
1653
1654         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1655                 /* Find numtc from enabled TC bitmap */
1656                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1657                         if (enabled_tc & BIT(i)) /* TC is enabled */
1658                                 numtc++;
1659                 }
1660                 if (!numtc) {
1661                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1662                         numtc = 1;
1663                 }
1664         } else {
1665                 /* At least TC0 is enabled in case of non-DCB case */
1666                 numtc = 1;
1667         }
1668
1669         vsi->tc_config.numtc = numtc;
1670         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1671         /* Number of queues per enabled TC */
1672         qcount = vsi->alloc_queue_pairs;
1673
1674         num_tc_qps = qcount / numtc;
1675         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1676
1677         /* Setup queue offset/count for all TCs for given VSI */
1678         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1679                 /* See if the given TC is enabled for the given VSI */
1680                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1681                         /* TC is enabled */
1682                         int pow, num_qps;
1683
1684                         switch (vsi->type) {
1685                         case I40E_VSI_MAIN:
1686                                 qcount = min_t(int, pf->alloc_rss_size,
1687                                                num_tc_qps);
1688                                 break;
1689 #ifdef I40E_FCOE
1690                         case I40E_VSI_FCOE:
1691                                 qcount = num_tc_qps;
1692                                 break;
1693 #endif
1694                         case I40E_VSI_FDIR:
1695                         case I40E_VSI_SRIOV:
1696                         case I40E_VSI_VMDQ2:
1697                         default:
1698                                 qcount = num_tc_qps;
1699                                 WARN_ON(i != 0);
1700                                 break;
1701                         }
1702                         vsi->tc_config.tc_info[i].qoffset = offset;
1703                         vsi->tc_config.tc_info[i].qcount = qcount;
1704
1705                         /* find the next higher power-of-2 of num queue pairs */
1706                         num_qps = qcount;
1707                         pow = 0;
1708                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1709                                 pow++;
1710                                 num_qps >>= 1;
1711                         }
1712
1713                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1714                         qmap =
1715                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1716                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1717
1718                         offset += qcount;
1719                 } else {
1720                         /* TC is not enabled so set the offset to
1721                          * default queue and allocate one queue
1722                          * for the given TC.
1723                          */
1724                         vsi->tc_config.tc_info[i].qoffset = 0;
1725                         vsi->tc_config.tc_info[i].qcount = 1;
1726                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1727
1728                         qmap = 0;
1729                 }
1730                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1731         }
1732
1733         /* Set actual Tx/Rx queue pairs */
1734         vsi->num_queue_pairs = offset;
1735         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1736                 if (vsi->req_queue_pairs > 0)
1737                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1738                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1739                         vsi->num_queue_pairs = pf->num_lan_msix;
1740         }
1741
1742         /* Scheduler section valid can only be set for ADD VSI */
1743         if (is_add) {
1744                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1745
1746                 ctxt->info.up_enable_bits = enabled_tc;
1747         }
1748         if (vsi->type == I40E_VSI_SRIOV) {
1749                 ctxt->info.mapping_flags |=
1750                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1751                 for (i = 0; i < vsi->num_queue_pairs; i++)
1752                         ctxt->info.queue_mapping[i] =
1753                                                cpu_to_le16(vsi->base_queue + i);
1754         } else {
1755                 ctxt->info.mapping_flags |=
1756                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1757                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1758         }
1759         ctxt->info.valid_sections |= cpu_to_le16(sections);
1760 }
1761
1762 /**
1763  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
1764  * @netdev: the netdevice
1765  * @addr: address to add
1766  *
1767  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
1768  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1769  */
1770 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
1771 {
1772         struct i40e_netdev_priv *np = netdev_priv(netdev);
1773         struct i40e_vsi *vsi = np->vsi;
1774
1775         if (i40e_add_mac_filter(vsi, addr))
1776                 return 0;
1777         else
1778                 return -ENOMEM;
1779 }
1780
1781 /**
1782  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
1783  * @netdev: the netdevice
1784  * @addr: address to add
1785  *
1786  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
1787  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1788  */
1789 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
1790 {
1791         struct i40e_netdev_priv *np = netdev_priv(netdev);
1792         struct i40e_vsi *vsi = np->vsi;
1793
1794         i40e_del_mac_filter(vsi, addr);
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_del_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 this list were slated for deletion.
1838  **/
1839 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1840                                          struct hlist_head *from)
1841 {
1842         struct i40e_mac_filter *f;
1843         struct hlist_node *h;
1844
1845         hlist_for_each_entry_safe(f, h, from, hlist) {
1846                 u64 key = i40e_addr_to_hkey(f->macaddr);
1847
1848                 /* Move the element back into MAC filter list*/
1849                 hlist_del(&f->hlist);
1850                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1851         }
1852 }
1853
1854 /**
1855  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1856  * @vsi: Pointer to vsi struct
1857  * @from: Pointer to list which contains MAC filter entries - changes to
1858  *        those entries needs to be undone.
1859  *
1860  * MAC filter entries from this list were slated for addition.
1861  **/
1862 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
1863                                          struct hlist_head *from)
1864 {
1865         struct i40e_new_mac_filter *new;
1866         struct hlist_node *h;
1867
1868         hlist_for_each_entry_safe(new, h, from, hlist) {
1869                 /* We can simply free the wrapper structure */
1870                 hlist_del(&new->hlist);
1871                 kfree(new);
1872         }
1873 }
1874
1875 /**
1876  * i40e_next_entry - Get the next non-broadcast filter from a list
1877  * @next: pointer to filter in list
1878  *
1879  * Returns the next non-broadcast filter in the list. Required so that we
1880  * ignore broadcast filters within the list, since these are not handled via
1881  * the normal firmware update path.
1882  */
1883 static
1884 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
1885 {
1886         while (next) {
1887                 next = hlist_entry(next->hlist.next,
1888                                    typeof(struct i40e_new_mac_filter),
1889                                    hlist);
1890
1891                 /* keep going if we found a broadcast filter */
1892                 if (next && is_broadcast_ether_addr(next->f->macaddr))
1893                         continue;
1894
1895                 break;
1896         }
1897
1898         return next;
1899 }
1900
1901 /**
1902  * i40e_update_filter_state - Update filter state based on return data
1903  * from firmware
1904  * @count: Number of filters added
1905  * @add_list: return data from fw
1906  * @head: pointer to first filter in current batch
1907  *
1908  * MAC filter entries from list were slated to be added to device. Returns
1909  * number of successful filters. Note that 0 does NOT mean success!
1910  **/
1911 static int
1912 i40e_update_filter_state(int count,
1913                          struct i40e_aqc_add_macvlan_element_data *add_list,
1914                          struct i40e_new_mac_filter *add_head)
1915 {
1916         int retval = 0;
1917         int i;
1918
1919         for (i = 0; i < count; i++) {
1920                 /* Always check status of each filter. We don't need to check
1921                  * the firmware return status because we pre-set the filter
1922                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
1923                  * request to the adminq. Thus, if it no longer matches then
1924                  * we know the filter is active.
1925                  */
1926                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
1927                         add_head->state = I40E_FILTER_FAILED;
1928                 } else {
1929                         add_head->state = I40E_FILTER_ACTIVE;
1930                         retval++;
1931                 }
1932
1933                 add_head = i40e_next_filter(add_head);
1934                 if (!add_head)
1935                         break;
1936         }
1937
1938         return retval;
1939 }
1940
1941 /**
1942  * i40e_aqc_del_filters - Request firmware to delete a set of filters
1943  * @vsi: ptr to the VSI
1944  * @vsi_name: name to display in messages
1945  * @list: the list of filters to send to firmware
1946  * @num_del: the number of filters to delete
1947  * @retval: Set to -EIO on failure to delete
1948  *
1949  * Send a request to firmware via AdminQ to delete a set of filters. Uses
1950  * *retval instead of a return value so that success does not force ret_val to
1951  * be set to 0. This ensures that a sequence of calls to this function
1952  * preserve the previous value of *retval on successful delete.
1953  */
1954 static
1955 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
1956                           struct i40e_aqc_remove_macvlan_element_data *list,
1957                           int num_del, int *retval)
1958 {
1959         struct i40e_hw *hw = &vsi->back->hw;
1960         i40e_status aq_ret;
1961         int aq_err;
1962
1963         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
1964         aq_err = hw->aq.asq_last_status;
1965
1966         /* Explicitly ignore and do not report when firmware returns ENOENT */
1967         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1968                 *retval = -EIO;
1969                 dev_info(&vsi->back->pdev->dev,
1970                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1971                          vsi_name, i40e_stat_str(hw, aq_ret),
1972                          i40e_aq_str(hw, aq_err));
1973         }
1974 }
1975
1976 /**
1977  * i40e_aqc_add_filters - Request firmware to add a set of filters
1978  * @vsi: ptr to the VSI
1979  * @vsi_name: name to display in messages
1980  * @list: the list of filters to send to firmware
1981  * @add_head: Position in the add hlist
1982  * @num_add: the number of filters to add
1983  * @promisc_change: set to true on exit if promiscuous mode was forced on
1984  *
1985  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
1986  * promisc_changed to true if the firmware has run out of space for more
1987  * filters.
1988  */
1989 static
1990 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
1991                           struct i40e_aqc_add_macvlan_element_data *list,
1992                           struct i40e_new_mac_filter *add_head,
1993                           int num_add, bool *promisc_changed)
1994 {
1995         struct i40e_hw *hw = &vsi->back->hw;
1996         int aq_err, fcnt;
1997
1998         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
1999         aq_err = hw->aq.asq_last_status;
2000         fcnt = i40e_update_filter_state(num_add, list, add_head);
2001
2002         if (fcnt != num_add) {
2003                 *promisc_changed = true;
2004                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2005                 dev_warn(&vsi->back->pdev->dev,
2006                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2007                          i40e_aq_str(hw, aq_err),
2008                          vsi_name);
2009         }
2010 }
2011
2012 /**
2013  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2014  * @vsi: pointer to the VSI
2015  * @f: filter data
2016  *
2017  * This function sets or clears the promiscuous broadcast flags for VLAN
2018  * filters in order to properly receive broadcast frames. Assumes that only
2019  * broadcast filters are passed.
2020  *
2021  * Returns status indicating success or failure;
2022  **/
2023 static i40e_status
2024 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2025                           struct i40e_mac_filter *f)
2026 {
2027         bool enable = f->state == I40E_FILTER_NEW;
2028         struct i40e_hw *hw = &vsi->back->hw;
2029         i40e_status aq_ret;
2030
2031         if (f->vlan == I40E_VLAN_ANY) {
2032                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2033                                                    vsi->seid,
2034                                                    enable,
2035                                                    NULL);
2036         } else {
2037                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2038                                                             vsi->seid,
2039                                                             enable,
2040                                                             f->vlan,
2041                                                             NULL);
2042         }
2043
2044         if (aq_ret)
2045                 dev_warn(&vsi->back->pdev->dev,
2046                          "Error %s setting broadcast promiscuous mode on %s\n",
2047                          i40e_aq_str(hw, hw->aq.asq_last_status),
2048                          vsi_name);
2049
2050         return aq_ret;
2051 }
2052
2053 /**
2054  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2055  * @vsi: ptr to the VSI
2056  *
2057  * Push any outstanding VSI filter changes through the AdminQ.
2058  *
2059  * Returns 0 or error value
2060  **/
2061 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2062 {
2063         struct hlist_head tmp_add_list, tmp_del_list;
2064         struct i40e_mac_filter *f;
2065         struct i40e_new_mac_filter *new, *add_head = NULL;
2066         struct i40e_hw *hw = &vsi->back->hw;
2067         unsigned int failed_filters = 0;
2068         unsigned int vlan_filters = 0;
2069         bool promisc_changed = false;
2070         char vsi_name[16] = "PF";
2071         int filter_list_len = 0;
2072         i40e_status aq_ret = 0;
2073         u32 changed_flags = 0;
2074         struct hlist_node *h;
2075         struct i40e_pf *pf;
2076         int num_add = 0;
2077         int num_del = 0;
2078         int retval = 0;
2079         u16 cmd_flags;
2080         int list_size;
2081         int bkt;
2082
2083         /* empty array typed pointers, kcalloc later */
2084         struct i40e_aqc_add_macvlan_element_data *add_list;
2085         struct i40e_aqc_remove_macvlan_element_data *del_list;
2086
2087         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
2088                 usleep_range(1000, 2000);
2089         pf = vsi->back;
2090
2091         if (vsi->netdev) {
2092                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2093                 vsi->current_netdev_flags = vsi->netdev->flags;
2094         }
2095
2096         INIT_HLIST_HEAD(&tmp_add_list);
2097         INIT_HLIST_HEAD(&tmp_del_list);
2098
2099         if (vsi->type == I40E_VSI_SRIOV)
2100                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2101         else if (vsi->type != I40E_VSI_MAIN)
2102                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2103
2104         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2105                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2106
2107                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2108                 /* Create a list of filters to delete. */
2109                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2110                         if (f->state == I40E_FILTER_REMOVE) {
2111                                 /* Move the element into temporary del_list */
2112                                 hash_del(&f->hlist);
2113                                 hlist_add_head(&f->hlist, &tmp_del_list);
2114
2115                                 /* Avoid counting removed filters */
2116                                 continue;
2117                         }
2118                         if (f->state == I40E_FILTER_NEW) {
2119                                 /* Create a temporary i40e_new_mac_filter */
2120                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2121                                 if (!new)
2122                                         goto err_no_memory_locked;
2123
2124                                 /* Store pointer to the real filter */
2125                                 new->f = f;
2126                                 new->state = f->state;
2127
2128                                 /* Add it to the hash list */
2129                                 hlist_add_head(&new->hlist, &tmp_add_list);
2130                         }
2131
2132                         /* Count the number of active (current and new) VLAN
2133                          * filters we have now. Does not count filters which
2134                          * are marked for deletion.
2135                          */
2136                         if (f->vlan > 0)
2137                                 vlan_filters++;
2138                 }
2139
2140                 retval = i40e_correct_mac_vlan_filters(vsi,
2141                                                        &tmp_add_list,
2142                                                        &tmp_del_list,
2143                                                        vlan_filters);
2144                 if (retval)
2145                         goto err_no_memory_locked;
2146
2147                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2148         }
2149
2150         /* Now process 'del_list' outside the lock */
2151         if (!hlist_empty(&tmp_del_list)) {
2152                 filter_list_len = hw->aq.asq_buf_size /
2153                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2154                 list_size = filter_list_len *
2155                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2156                 del_list = kzalloc(list_size, GFP_ATOMIC);
2157                 if (!del_list)
2158                         goto err_no_memory;
2159
2160                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2161                         cmd_flags = 0;
2162
2163                         /* handle broadcast filters by updating the broadcast
2164                          * promiscuous flag and release filter list.
2165                          */
2166                         if (is_broadcast_ether_addr(f->macaddr)) {
2167                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2168
2169                                 hlist_del(&f->hlist);
2170                                 kfree(f);
2171                                 continue;
2172                         }
2173
2174                         /* add to delete list */
2175                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2176                         if (f->vlan == I40E_VLAN_ANY) {
2177                                 del_list[num_del].vlan_tag = 0;
2178                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2179                         } else {
2180                                 del_list[num_del].vlan_tag =
2181                                         cpu_to_le16((u16)(f->vlan));
2182                         }
2183
2184                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2185                         del_list[num_del].flags = cmd_flags;
2186                         num_del++;
2187
2188                         /* flush a full buffer */
2189                         if (num_del == filter_list_len) {
2190                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2191                                                      num_del, &retval);
2192                                 memset(del_list, 0, list_size);
2193                                 num_del = 0;
2194                         }
2195                         /* Release memory for MAC filter entries which were
2196                          * synced up with HW.
2197                          */
2198                         hlist_del(&f->hlist);
2199                         kfree(f);
2200                 }
2201
2202                 if (num_del) {
2203                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2204                                              num_del, &retval);
2205                 }
2206
2207                 kfree(del_list);
2208                 del_list = NULL;
2209         }
2210
2211         if (!hlist_empty(&tmp_add_list)) {
2212                 /* Do all the adds now. */
2213                 filter_list_len = hw->aq.asq_buf_size /
2214                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2215                 list_size = filter_list_len *
2216                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2217                 add_list = kzalloc(list_size, GFP_ATOMIC);
2218                 if (!add_list)
2219                         goto err_no_memory;
2220
2221                 num_add = 0;
2222                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2223                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2224                                      &vsi->state)) {
2225                                 new->state = I40E_FILTER_FAILED;
2226                                 continue;
2227                         }
2228
2229                         /* handle broadcast filters by updating the broadcast
2230                          * promiscuous flag instead of adding a MAC filter.
2231                          */
2232                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2233                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2234                                                               new->f))
2235                                         new->state = I40E_FILTER_FAILED;
2236                                 else
2237                                         new->state = I40E_FILTER_ACTIVE;
2238                                 continue;
2239                         }
2240
2241                         /* add to add array */
2242                         if (num_add == 0)
2243                                 add_head = new;
2244                         cmd_flags = 0;
2245                         ether_addr_copy(add_list[num_add].mac_addr,
2246                                         new->f->macaddr);
2247                         if (new->f->vlan == I40E_VLAN_ANY) {
2248                                 add_list[num_add].vlan_tag = 0;
2249                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2250                         } else {
2251                                 add_list[num_add].vlan_tag =
2252                                         cpu_to_le16((u16)(new->f->vlan));
2253                         }
2254                         add_list[num_add].queue_number = 0;
2255                         /* set invalid match method for later detection */
2256                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2257                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2258                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2259                         num_add++;
2260
2261                         /* flush a full buffer */
2262                         if (num_add == filter_list_len) {
2263                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2264                                                      add_head, num_add,
2265                                                      &promisc_changed);
2266                                 memset(add_list, 0, list_size);
2267                                 num_add = 0;
2268                         }
2269                 }
2270                 if (num_add) {
2271                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2272                                              num_add, &promisc_changed);
2273                 }
2274                 /* Now move all of the filters from the temp add list back to
2275                  * the VSI's list.
2276                  */
2277                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2278                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2279                         /* Only update the state if we're still NEW */
2280                         if (new->f->state == I40E_FILTER_NEW)
2281                                 new->f->state = new->state;
2282                         hlist_del(&new->hlist);
2283                         kfree(new);
2284                 }
2285                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2286                 kfree(add_list);
2287                 add_list = NULL;
2288         }
2289
2290         /* Determine the number of active and failed filters. */
2291         spin_lock_bh(&vsi->mac_filter_hash_lock);
2292         vsi->active_filters = 0;
2293         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2294                 if (f->state == I40E_FILTER_ACTIVE)
2295                         vsi->active_filters++;
2296                 else if (f->state == I40E_FILTER_FAILED)
2297                         failed_filters++;
2298         }
2299         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2300
2301         /* If promiscuous mode has changed, we need to calculate a new
2302          * threshold for when we are safe to exit
2303          */
2304         if (promisc_changed)
2305                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2306
2307         /* Check if we are able to exit overflow promiscuous mode. We can
2308          * safely exit if we didn't just enter, we no longer have any failed
2309          * filters, and we have reduced filters below the threshold value.
2310          */
2311         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2312             !promisc_changed && !failed_filters &&
2313             (vsi->active_filters < vsi->promisc_threshold)) {
2314                 dev_info(&pf->pdev->dev,
2315                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2316                          vsi_name);
2317                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2318                 promisc_changed = true;
2319                 vsi->promisc_threshold = 0;
2320         }
2321
2322         /* if the VF is not trusted do not do promisc */
2323         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2324                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2325                 goto out;
2326         }
2327
2328         /* check for changes in promiscuous modes */
2329         if (changed_flags & IFF_ALLMULTI) {
2330                 bool cur_multipromisc;
2331
2332                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2333                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2334                                                                vsi->seid,
2335                                                                cur_multipromisc,
2336                                                                NULL);
2337                 if (aq_ret) {
2338                         retval = i40e_aq_rc_to_posix(aq_ret,
2339                                                      hw->aq.asq_last_status);
2340                         dev_info(&pf->pdev->dev,
2341                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2342                                  vsi_name,
2343                                  i40e_stat_str(hw, aq_ret),
2344                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2345                 }
2346         }
2347         if ((changed_flags & IFF_PROMISC) ||
2348             (promisc_changed &&
2349              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2350                 bool cur_promisc;
2351
2352                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2353                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2354                                         &vsi->state));
2355                 if ((vsi->type == I40E_VSI_MAIN) &&
2356                     (pf->lan_veb != I40E_NO_VEB) &&
2357                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2358                         /* set defport ON for Main VSI instead of true promisc
2359                          * this way we will get all unicast/multicast and VLAN
2360                          * promisc behavior but will not get VF or VMDq traffic
2361                          * replicated on the Main VSI.
2362                          */
2363                         if (pf->cur_promisc != cur_promisc) {
2364                                 pf->cur_promisc = cur_promisc;
2365                                 if (cur_promisc)
2366                                         aq_ret =
2367                                               i40e_aq_set_default_vsi(hw,
2368                                                                       vsi->seid,
2369                                                                       NULL);
2370                                 else
2371                                         aq_ret =
2372                                             i40e_aq_clear_default_vsi(hw,
2373                                                                       vsi->seid,
2374                                                                       NULL);
2375                                 if (aq_ret) {
2376                                         retval = i40e_aq_rc_to_posix(aq_ret,
2377                                                         hw->aq.asq_last_status);
2378                                         dev_info(&pf->pdev->dev,
2379                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2380                                                  vsi_name,
2381                                                  i40e_stat_str(hw, aq_ret),
2382                                                  i40e_aq_str(hw,
2383                                                      hw->aq.asq_last_status));
2384                                 }
2385                         }
2386                 } else {
2387                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2388                                                           hw,
2389                                                           vsi->seid,
2390                                                           cur_promisc, NULL,
2391                                                           true);
2392                         if (aq_ret) {
2393                                 retval =
2394                                 i40e_aq_rc_to_posix(aq_ret,
2395                                                     hw->aq.asq_last_status);
2396                                 dev_info(&pf->pdev->dev,
2397                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2398                                          vsi_name,
2399                                          i40e_stat_str(hw, aq_ret),
2400                                          i40e_aq_str(hw,
2401                                                      hw->aq.asq_last_status));
2402                         }
2403                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2404                                                           hw,
2405                                                           vsi->seid,
2406                                                           cur_promisc, NULL);
2407                         if (aq_ret) {
2408                                 retval =
2409                                 i40e_aq_rc_to_posix(aq_ret,
2410                                                     hw->aq.asq_last_status);
2411                                 dev_info(&pf->pdev->dev,
2412                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2413                                          vsi_name,
2414                                          i40e_stat_str(hw, aq_ret),
2415                                          i40e_aq_str(hw,
2416                                                      hw->aq.asq_last_status));
2417                         }
2418                 }
2419                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2420                                                    vsi->seid,
2421                                                    cur_promisc, NULL);
2422                 if (aq_ret) {
2423                         retval = i40e_aq_rc_to_posix(aq_ret,
2424                                                      pf->hw.aq.asq_last_status);
2425                         dev_info(&pf->pdev->dev,
2426                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2427                                          i40e_stat_str(hw, aq_ret),
2428                                          i40e_aq_str(hw,
2429                                                      hw->aq.asq_last_status));
2430                 }
2431         }
2432 out:
2433         /* if something went wrong then set the changed flag so we try again */
2434         if (retval)
2435                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2436
2437         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2438         return retval;
2439
2440 err_no_memory:
2441         /* Restore elements on the temporary add and delete lists */
2442         spin_lock_bh(&vsi->mac_filter_hash_lock);
2443 err_no_memory_locked:
2444         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2445         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2446         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2447
2448         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2449         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2450         return -ENOMEM;
2451 }
2452
2453 /**
2454  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2455  * @pf: board private structure
2456  **/
2457 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2458 {
2459         int v;
2460
2461         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2462                 return;
2463         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2464
2465         for (v = 0; v < pf->num_alloc_vsi; v++) {
2466                 if (pf->vsi[v] &&
2467                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2468                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2469
2470                         if (ret) {
2471                                 /* come back and try again later */
2472                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2473                                 break;
2474                         }
2475                 }
2476         }
2477 }
2478
2479 /**
2480  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2481  * @netdev: network interface device structure
2482  * @new_mtu: new value for maximum frame size
2483  *
2484  * Returns 0 on success, negative on failure
2485  **/
2486 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2487 {
2488         struct i40e_netdev_priv *np = netdev_priv(netdev);
2489         struct i40e_vsi *vsi = np->vsi;
2490         struct i40e_pf *pf = vsi->back;
2491
2492         netdev_info(netdev, "changing MTU from %d to %d\n",
2493                     netdev->mtu, new_mtu);
2494         netdev->mtu = new_mtu;
2495         if (netif_running(netdev))
2496                 i40e_vsi_reinit_locked(vsi);
2497         pf->flags |= (I40E_FLAG_SERVICE_CLIENT_REQUESTED |
2498                       I40E_FLAG_CLIENT_L2_CHANGE);
2499         return 0;
2500 }
2501
2502 /**
2503  * i40e_ioctl - Access the hwtstamp interface
2504  * @netdev: network interface device structure
2505  * @ifr: interface request data
2506  * @cmd: ioctl command
2507  **/
2508 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2509 {
2510         struct i40e_netdev_priv *np = netdev_priv(netdev);
2511         struct i40e_pf *pf = np->vsi->back;
2512
2513         switch (cmd) {
2514         case SIOCGHWTSTAMP:
2515                 return i40e_ptp_get_ts_config(pf, ifr);
2516         case SIOCSHWTSTAMP:
2517                 return i40e_ptp_set_ts_config(pf, ifr);
2518         default:
2519                 return -EOPNOTSUPP;
2520         }
2521 }
2522
2523 /**
2524  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2525  * @vsi: the vsi being adjusted
2526  **/
2527 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2528 {
2529         struct i40e_vsi_context ctxt;
2530         i40e_status ret;
2531
2532         if ((vsi->info.valid_sections &
2533              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2534             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2535                 return;  /* already enabled */
2536
2537         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2538         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2539                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2540
2541         ctxt.seid = vsi->seid;
2542         ctxt.info = vsi->info;
2543         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2544         if (ret) {
2545                 dev_info(&vsi->back->pdev->dev,
2546                          "update vlan stripping failed, err %s aq_err %s\n",
2547                          i40e_stat_str(&vsi->back->hw, ret),
2548                          i40e_aq_str(&vsi->back->hw,
2549                                      vsi->back->hw.aq.asq_last_status));
2550         }
2551 }
2552
2553 /**
2554  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2555  * @vsi: the vsi being adjusted
2556  **/
2557 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2558 {
2559         struct i40e_vsi_context ctxt;
2560         i40e_status ret;
2561
2562         if ((vsi->info.valid_sections &
2563              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2564             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2565              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2566                 return;  /* already disabled */
2567
2568         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2569         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2570                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2571
2572         ctxt.seid = vsi->seid;
2573         ctxt.info = vsi->info;
2574         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2575         if (ret) {
2576                 dev_info(&vsi->back->pdev->dev,
2577                          "update vlan stripping failed, err %s aq_err %s\n",
2578                          i40e_stat_str(&vsi->back->hw, ret),
2579                          i40e_aq_str(&vsi->back->hw,
2580                                      vsi->back->hw.aq.asq_last_status));
2581         }
2582 }
2583
2584 /**
2585  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2586  * @netdev: network interface to be adjusted
2587  * @features: netdev features to test if VLAN offload is enabled or not
2588  **/
2589 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2590 {
2591         struct i40e_netdev_priv *np = netdev_priv(netdev);
2592         struct i40e_vsi *vsi = np->vsi;
2593
2594         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2595                 i40e_vlan_stripping_enable(vsi);
2596         else
2597                 i40e_vlan_stripping_disable(vsi);
2598 }
2599
2600 /**
2601  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2602  * @vsi: the vsi being configured
2603  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2604  *
2605  * This is a helper function for adding a new MAC/VLAN filter with the
2606  * specified VLAN for each existing MAC address already in the hash table.
2607  * This function does *not* perform any accounting to update filters based on
2608  * VLAN mode.
2609  *
2610  * NOTE: this function expects to be called while under the
2611  * mac_filter_hash_lock
2612  **/
2613 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2614 {
2615         struct i40e_mac_filter *f, *add_f;
2616         struct hlist_node *h;
2617         int bkt;
2618
2619         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2620                 if (f->state == I40E_FILTER_REMOVE)
2621                         continue;
2622                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2623                 if (!add_f) {
2624                         dev_info(&vsi->back->pdev->dev,
2625                                  "Could not add vlan filter %d for %pM\n",
2626                                  vid, f->macaddr);
2627                         return -ENOMEM;
2628                 }
2629         }
2630
2631         return 0;
2632 }
2633
2634 /**
2635  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2636  * @vsi: the VSI being configured
2637  * @vid: VLAN id to be added
2638  **/
2639 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2640 {
2641         int err;
2642
2643         if (!vid || vsi->info.pvid)
2644                 return -EINVAL;
2645
2646         /* Locked once because all functions invoked below iterates list*/
2647         spin_lock_bh(&vsi->mac_filter_hash_lock);
2648         err = i40e_add_vlan_all_mac(vsi, vid);
2649         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2650         if (err)
2651                 return err;
2652
2653         /* schedule our worker thread which will take care of
2654          * applying the new filter changes
2655          */
2656         i40e_service_event_schedule(vsi->back);
2657         return 0;
2658 }
2659
2660 /**
2661  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2662  * @vsi: the vsi being configured
2663  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2664  *
2665  * This function should be used to remove all VLAN filters which match the
2666  * given VID. It does not schedule the service event and does not take the
2667  * mac_filter_hash_lock so it may be combined with other operations under
2668  * a single invocation of the mac_filter_hash_lock.
2669  *
2670  * NOTE: this function expects to be called while under the
2671  * mac_filter_hash_lock
2672  */
2673 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2674 {
2675         struct i40e_mac_filter *f;
2676         struct hlist_node *h;
2677         int bkt;
2678
2679         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2680                 if (f->vlan == vid)
2681                         __i40e_del_filter(vsi, f);
2682         }
2683 }
2684
2685 /**
2686  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
2687  * @vsi: the VSI being configured
2688  * @vid: VLAN id to be removed
2689  **/
2690 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
2691 {
2692         if (!vid || vsi->info.pvid)
2693                 return;
2694
2695         spin_lock_bh(&vsi->mac_filter_hash_lock);
2696         i40e_rm_vlan_all_mac(vsi, vid);
2697         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2698
2699         /* schedule our worker thread which will take care of
2700          * applying the new filter changes
2701          */
2702         i40e_service_event_schedule(vsi->back);
2703 }
2704
2705 /**
2706  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2707  * @netdev: network interface to be adjusted
2708  * @vid: vlan id to be added
2709  *
2710  * net_device_ops implementation for adding vlan ids
2711  **/
2712 #ifdef I40E_FCOE
2713 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2714                          __always_unused __be16 proto, u16 vid)
2715 #else
2716 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2717                                 __always_unused __be16 proto, u16 vid)
2718 #endif
2719 {
2720         struct i40e_netdev_priv *np = netdev_priv(netdev);
2721         struct i40e_vsi *vsi = np->vsi;
2722         int ret = 0;
2723
2724         if (vid >= VLAN_N_VID)
2725                 return -EINVAL;
2726
2727         /* If the network stack called us with vid = 0 then
2728          * it is asking to receive priority tagged packets with
2729          * vlan id 0.  Our HW receives them by default when configured
2730          * to receive untagged packets so there is no need to add an
2731          * extra filter for vlan 0 tagged packets.
2732          */
2733         if (vid)
2734                 ret = i40e_vsi_add_vlan(vsi, vid);
2735
2736         if (!ret)
2737                 set_bit(vid, vsi->active_vlans);
2738
2739         return ret;
2740 }
2741
2742 /**
2743  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2744  * @netdev: network interface to be adjusted
2745  * @vid: vlan id to be removed
2746  *
2747  * net_device_ops implementation for removing vlan ids
2748  **/
2749 #ifdef I40E_FCOE
2750 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2751                           __always_unused __be16 proto, u16 vid)
2752 #else
2753 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2754                                  __always_unused __be16 proto, u16 vid)
2755 #endif
2756 {
2757         struct i40e_netdev_priv *np = netdev_priv(netdev);
2758         struct i40e_vsi *vsi = np->vsi;
2759
2760         /* return code is ignored as there is nothing a user
2761          * can do about failure to remove and a log message was
2762          * already printed from the other function
2763          */
2764         i40e_vsi_kill_vlan(vsi, vid);
2765
2766         clear_bit(vid, vsi->active_vlans);
2767
2768         return 0;
2769 }
2770
2771 /**
2772  * i40e_macaddr_init - explicitly write the mac address filters
2773  *
2774  * @vsi: pointer to the vsi
2775  * @macaddr: the MAC address
2776  *
2777  * This is needed when the macaddr has been obtained by other
2778  * means than the default, e.g., from Open Firmware or IDPROM.
2779  * Returns 0 on success, negative on failure
2780  **/
2781 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2782 {
2783         int ret;
2784         struct i40e_aqc_add_macvlan_element_data element;
2785
2786         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2787                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2788                                         macaddr, NULL);
2789         if (ret) {
2790                 dev_info(&vsi->back->pdev->dev,
2791                          "Addr change for VSI failed: %d\n", ret);
2792                 return -EADDRNOTAVAIL;
2793         }
2794
2795         memset(&element, 0, sizeof(element));
2796         ether_addr_copy(element.mac_addr, macaddr);
2797         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2798         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2799         if (ret) {
2800                 dev_info(&vsi->back->pdev->dev,
2801                          "add filter failed err %s aq_err %s\n",
2802                          i40e_stat_str(&vsi->back->hw, ret),
2803                          i40e_aq_str(&vsi->back->hw,
2804                                      vsi->back->hw.aq.asq_last_status));
2805         }
2806         return ret;
2807 }
2808
2809 /**
2810  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2811  * @vsi: the vsi being brought back up
2812  **/
2813 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2814 {
2815         u16 vid;
2816
2817         if (!vsi->netdev)
2818                 return;
2819
2820         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2821
2822         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2823                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2824                                      vid);
2825 }
2826
2827 /**
2828  * i40e_vsi_add_pvid - Add pvid for the VSI
2829  * @vsi: the vsi being adjusted
2830  * @vid: the vlan id to set as a PVID
2831  **/
2832 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2833 {
2834         struct i40e_vsi_context ctxt;
2835         i40e_status ret;
2836
2837         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2838         vsi->info.pvid = cpu_to_le16(vid);
2839         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2840                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2841                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2842
2843         ctxt.seid = vsi->seid;
2844         ctxt.info = vsi->info;
2845         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2846         if (ret) {
2847                 dev_info(&vsi->back->pdev->dev,
2848                          "add pvid failed, err %s aq_err %s\n",
2849                          i40e_stat_str(&vsi->back->hw, ret),
2850                          i40e_aq_str(&vsi->back->hw,
2851                                      vsi->back->hw.aq.asq_last_status));
2852                 return -ENOENT;
2853         }
2854
2855         return 0;
2856 }
2857
2858 /**
2859  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2860  * @vsi: the vsi being adjusted
2861  *
2862  * Just use the vlan_rx_register() service to put it back to normal
2863  **/
2864 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2865 {
2866         i40e_vlan_stripping_disable(vsi);
2867
2868         vsi->info.pvid = 0;
2869 }
2870
2871 /**
2872  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2873  * @vsi: ptr to the VSI
2874  *
2875  * If this function returns with an error, then it's possible one or
2876  * more of the rings is populated (while the rest are not).  It is the
2877  * callers duty to clean those orphaned rings.
2878  *
2879  * Return 0 on success, negative on failure
2880  **/
2881 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2882 {
2883         int i, err = 0;
2884
2885         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2886                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2887
2888         return err;
2889 }
2890
2891 /**
2892  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2893  * @vsi: ptr to the VSI
2894  *
2895  * Free VSI's transmit software resources
2896  **/
2897 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2898 {
2899         int i;
2900
2901         if (!vsi->tx_rings)
2902                 return;
2903
2904         for (i = 0; i < vsi->num_queue_pairs; i++)
2905                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2906                         i40e_free_tx_resources(vsi->tx_rings[i]);
2907 }
2908
2909 /**
2910  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2911  * @vsi: ptr to the VSI
2912  *
2913  * If this function returns with an error, then it's possible one or
2914  * more of the rings is populated (while the rest are not).  It is the
2915  * callers duty to clean those orphaned rings.
2916  *
2917  * Return 0 on success, negative on failure
2918  **/
2919 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2920 {
2921         int i, err = 0;
2922
2923         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2924                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2925 #ifdef I40E_FCOE
2926         i40e_fcoe_setup_ddp_resources(vsi);
2927 #endif
2928         return err;
2929 }
2930
2931 /**
2932  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2933  * @vsi: ptr to the VSI
2934  *
2935  * Free all receive software resources
2936  **/
2937 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2938 {
2939         int i;
2940
2941         if (!vsi->rx_rings)
2942                 return;
2943
2944         for (i = 0; i < vsi->num_queue_pairs; i++)
2945                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2946                         i40e_free_rx_resources(vsi->rx_rings[i]);
2947 #ifdef I40E_FCOE
2948         i40e_fcoe_free_ddp_resources(vsi);
2949 #endif
2950 }
2951
2952 /**
2953  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2954  * @ring: The Tx ring to configure
2955  *
2956  * This enables/disables XPS for a given Tx descriptor ring
2957  * based on the TCs enabled for the VSI that ring belongs to.
2958  **/
2959 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2960 {
2961         struct i40e_vsi *vsi = ring->vsi;
2962         cpumask_var_t mask;
2963
2964         if (!ring->q_vector || !ring->netdev)
2965                 return;
2966
2967         /* Single TC mode enable XPS */
2968         if (vsi->tc_config.numtc <= 1) {
2969                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2970                         netif_set_xps_queue(ring->netdev,
2971                                             &ring->q_vector->affinity_mask,
2972                                             ring->queue_index);
2973         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2974                 /* Disable XPS to allow selection based on TC */
2975                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2976                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2977                 free_cpumask_var(mask);
2978         }
2979
2980         /* schedule our worker thread which will take care of
2981          * applying the new filter changes
2982          */
2983         i40e_service_event_schedule(vsi->back);
2984 }
2985
2986 /**
2987  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2988  * @ring: The Tx ring to configure
2989  *
2990  * Configure the Tx descriptor ring in the HMC context.
2991  **/
2992 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2993 {
2994         struct i40e_vsi *vsi = ring->vsi;
2995         u16 pf_q = vsi->base_queue + ring->queue_index;
2996         struct i40e_hw *hw = &vsi->back->hw;
2997         struct i40e_hmc_obj_txq tx_ctx;
2998         i40e_status err = 0;
2999         u32 qtx_ctl = 0;
3000
3001         /* some ATR related tx ring init */
3002         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3003                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3004                 ring->atr_count = 0;
3005         } else {
3006                 ring->atr_sample_rate = 0;
3007         }
3008
3009         /* configure XPS */
3010         i40e_config_xps_tx_ring(ring);
3011
3012         /* clear the context structure first */
3013         memset(&tx_ctx, 0, sizeof(tx_ctx));
3014
3015         tx_ctx.new_context = 1;
3016         tx_ctx.base = (ring->dma / 128);
3017         tx_ctx.qlen = ring->count;
3018         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3019                                                I40E_FLAG_FD_ATR_ENABLED));
3020 #ifdef I40E_FCOE
3021         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
3022 #endif
3023         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3024         /* FDIR VSI tx ring can still use RS bit and writebacks */
3025         if (vsi->type != I40E_VSI_FDIR)
3026                 tx_ctx.head_wb_ena = 1;
3027         tx_ctx.head_wb_addr = ring->dma +
3028                               (ring->count * sizeof(struct i40e_tx_desc));
3029
3030         /* As part of VSI creation/update, FW allocates certain
3031          * Tx arbitration queue sets for each TC enabled for
3032          * the VSI. The FW returns the handles to these queue
3033          * sets as part of the response buffer to Add VSI,
3034          * Update VSI, etc. AQ commands. It is expected that
3035          * these queue set handles be associated with the Tx
3036          * queues by the driver as part of the TX queue context
3037          * initialization. This has to be done regardless of
3038          * DCB as by default everything is mapped to TC0.
3039          */
3040         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3041         tx_ctx.rdylist_act = 0;
3042
3043         /* clear the context in the HMC */
3044         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3045         if (err) {
3046                 dev_info(&vsi->back->pdev->dev,
3047                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3048                          ring->queue_index, pf_q, err);
3049                 return -ENOMEM;
3050         }
3051
3052         /* set the context in the HMC */
3053         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3054         if (err) {
3055                 dev_info(&vsi->back->pdev->dev,
3056                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3057                          ring->queue_index, pf_q, err);
3058                 return -ENOMEM;
3059         }
3060
3061         /* Now associate this queue with this PCI function */
3062         if (vsi->type == I40E_VSI_VMDQ2) {
3063                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3064                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3065                            I40E_QTX_CTL_VFVM_INDX_MASK;
3066         } else {
3067                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3068         }
3069
3070         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3071                     I40E_QTX_CTL_PF_INDX_MASK);
3072         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3073         i40e_flush(hw);
3074
3075         /* cache tail off for easier writes later */
3076         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3077
3078         return 0;
3079 }
3080
3081 /**
3082  * i40e_configure_rx_ring - Configure a receive ring context
3083  * @ring: The Rx ring to configure
3084  *
3085  * Configure the Rx descriptor ring in the HMC context.
3086  **/
3087 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3088 {
3089         struct i40e_vsi *vsi = ring->vsi;
3090         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3091         u16 pf_q = vsi->base_queue + ring->queue_index;
3092         struct i40e_hw *hw = &vsi->back->hw;
3093         struct i40e_hmc_obj_rxq rx_ctx;
3094         i40e_status err = 0;
3095
3096         ring->state = 0;
3097
3098         /* clear the context structure first */
3099         memset(&rx_ctx, 0, sizeof(rx_ctx));
3100
3101         ring->rx_buf_len = vsi->rx_buf_len;
3102
3103         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
3104
3105         rx_ctx.base = (ring->dma / 128);
3106         rx_ctx.qlen = ring->count;
3107
3108         /* use 32 byte descriptors */
3109         rx_ctx.dsize = 1;
3110
3111         /* descriptor type is always zero
3112          * rx_ctx.dtype = 0;
3113          */
3114         rx_ctx.hsplit_0 = 0;
3115
3116         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3117         if (hw->revision_id == 0)
3118                 rx_ctx.lrxqthresh = 0;
3119         else
3120                 rx_ctx.lrxqthresh = 2;
3121         rx_ctx.crcstrip = 1;
3122         rx_ctx.l2tsel = 1;
3123         /* this controls whether VLAN is stripped from inner headers */
3124         rx_ctx.showiv = 0;
3125 #ifdef I40E_FCOE
3126         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
3127 #endif
3128         /* set the prefena field to 1 because the manual says to */
3129         rx_ctx.prefena = 1;
3130
3131         /* clear the context in the HMC */
3132         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3133         if (err) {
3134                 dev_info(&vsi->back->pdev->dev,
3135                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3136                          ring->queue_index, pf_q, err);
3137                 return -ENOMEM;
3138         }
3139
3140         /* set the context in the HMC */
3141         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3142         if (err) {
3143                 dev_info(&vsi->back->pdev->dev,
3144                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3145                          ring->queue_index, pf_q, err);
3146                 return -ENOMEM;
3147         }
3148
3149         /* cache tail for quicker writes, and clear the reg before use */
3150         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3151         writel(0, ring->tail);
3152
3153         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3154
3155         return 0;
3156 }
3157
3158 /**
3159  * i40e_vsi_configure_tx - Configure the VSI for Tx
3160  * @vsi: VSI structure describing this set of rings and resources
3161  *
3162  * Configure the Tx VSI for operation.
3163  **/
3164 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3165 {
3166         int err = 0;
3167         u16 i;
3168
3169         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3170                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3171
3172         return err;
3173 }
3174
3175 /**
3176  * i40e_vsi_configure_rx - Configure the VSI for Rx
3177  * @vsi: the VSI being configured
3178  *
3179  * Configure the Rx VSI for operation.
3180  **/
3181 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3182 {
3183         int err = 0;
3184         u16 i;
3185
3186         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3187                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3188                                + ETH_FCS_LEN + VLAN_HLEN;
3189         else
3190                 vsi->max_frame = I40E_RXBUFFER_2048;
3191
3192         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3193
3194 #ifdef I40E_FCOE
3195         /* setup rx buffer for FCoE */
3196         if ((vsi->type == I40E_VSI_FCOE) &&
3197             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3198                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3199                 vsi->max_frame = I40E_RXBUFFER_3072;
3200         }
3201
3202 #endif /* I40E_FCOE */
3203         /* round up for the chip's needs */
3204         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3205                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3206
3207         /* set up individual rings */
3208         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3209                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3210
3211         return err;
3212 }
3213
3214 /**
3215  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3216  * @vsi: ptr to the VSI
3217  **/
3218 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3219 {
3220         struct i40e_ring *tx_ring, *rx_ring;
3221         u16 qoffset, qcount;
3222         int i, n;
3223
3224         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3225                 /* Reset the TC information */
3226                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3227                         rx_ring = vsi->rx_rings[i];
3228                         tx_ring = vsi->tx_rings[i];
3229                         rx_ring->dcb_tc = 0;
3230                         tx_ring->dcb_tc = 0;
3231                 }
3232         }
3233
3234         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3235                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3236                         continue;
3237
3238                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3239                 qcount = vsi->tc_config.tc_info[n].qcount;
3240                 for (i = qoffset; i < (qoffset + qcount); i++) {
3241                         rx_ring = vsi->rx_rings[i];
3242                         tx_ring = vsi->tx_rings[i];
3243                         rx_ring->dcb_tc = n;
3244                         tx_ring->dcb_tc = n;
3245                 }
3246         }
3247 }
3248
3249 /**
3250  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3251  * @vsi: ptr to the VSI
3252  **/
3253 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3254 {
3255         struct i40e_pf *pf = vsi->back;
3256         int err;
3257
3258         if (vsi->netdev)
3259                 i40e_set_rx_mode(vsi->netdev);
3260
3261         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3262                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3263                 if (err) {
3264                         dev_warn(&pf->pdev->dev,
3265                                  "could not set up macaddr; err %d\n", err);
3266                 }
3267         }
3268 }
3269
3270 /**
3271  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3272  * @vsi: Pointer to the targeted VSI
3273  *
3274  * This function replays the hlist on the hw where all the SB Flow Director
3275  * filters were saved.
3276  **/
3277 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3278 {
3279         struct i40e_fdir_filter *filter;
3280         struct i40e_pf *pf = vsi->back;
3281         struct hlist_node *node;
3282
3283         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3284                 return;
3285
3286         /* Reset FDir counters as we're replaying all existing filters */
3287         pf->fd_tcp4_filter_cnt = 0;
3288         pf->fd_udp4_filter_cnt = 0;
3289         pf->fd_sctp4_filter_cnt = 0;
3290         pf->fd_ip4_filter_cnt = 0;
3291
3292         hlist_for_each_entry_safe(filter, node,
3293                                   &pf->fdir_filter_list, fdir_node) {
3294                 i40e_add_del_fdir(vsi, filter, true);
3295         }
3296 }
3297
3298 /**
3299  * i40e_vsi_configure - Set up the VSI for action
3300  * @vsi: the VSI being configured
3301  **/
3302 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3303 {
3304         int err;
3305
3306         i40e_set_vsi_rx_mode(vsi);
3307         i40e_restore_vlan(vsi);
3308         i40e_vsi_config_dcb_rings(vsi);
3309         err = i40e_vsi_configure_tx(vsi);
3310         if (!err)
3311                 err = i40e_vsi_configure_rx(vsi);
3312
3313         return err;
3314 }
3315
3316 /**
3317  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3318  * @vsi: the VSI being configured
3319  **/
3320 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3321 {
3322         struct i40e_pf *pf = vsi->back;
3323         struct i40e_hw *hw = &pf->hw;
3324         u16 vector;
3325         int i, q;
3326         u32 qp;
3327
3328         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3329          * and PFINT_LNKLSTn registers, e.g.:
3330          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3331          */
3332         qp = vsi->base_queue;
3333         vector = vsi->base_vector;
3334         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3335                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3336
3337                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3338                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3339                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3340                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3341                      q_vector->rx.itr);
3342                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3343                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3344                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3345                      q_vector->tx.itr);
3346                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3347                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3348
3349                 /* Linked list for the queuepairs assigned to this vector */
3350                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3351                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3352                         u32 val;
3353
3354                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3355                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3356                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3357                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3358                               (I40E_QUEUE_TYPE_TX
3359                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3360
3361                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3362
3363                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3364                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3365                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3366                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3367                               (I40E_QUEUE_TYPE_RX
3368                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3369
3370                         /* Terminate the linked list */
3371                         if (q == (q_vector->num_ringpairs - 1))
3372                                 val |= (I40E_QUEUE_END_OF_LIST
3373                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3374
3375                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3376                         qp++;
3377                 }
3378         }
3379
3380         i40e_flush(hw);
3381 }
3382
3383 /**
3384  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3385  * @hw: ptr to the hardware info
3386  **/
3387 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3388 {
3389         struct i40e_hw *hw = &pf->hw;
3390         u32 val;
3391
3392         /* clear things first */
3393         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3394         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3395
3396         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3397               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3398               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3399               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3400               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3401               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3402               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3403               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3404
3405         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3406                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3407
3408         if (pf->flags & I40E_FLAG_PTP)
3409                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3410
3411         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3412
3413         /* SW_ITR_IDX = 0, but don't change INTENA */
3414         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3415                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3416
3417         /* OTHER_ITR_IDX = 0 */
3418         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3419 }
3420
3421 /**
3422  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3423  * @vsi: the VSI being configured
3424  **/
3425 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3426 {
3427         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3428         struct i40e_pf *pf = vsi->back;
3429         struct i40e_hw *hw = &pf->hw;
3430         u32 val;
3431
3432         /* set the ITR configuration */
3433         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3434         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3435         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3436         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3437         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3438         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3439         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3440
3441         i40e_enable_misc_int_causes(pf);
3442
3443         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3444         wr32(hw, I40E_PFINT_LNKLST0, 0);
3445
3446         /* Associate the queue pair to the vector and enable the queue int */
3447         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3448               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3449               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3450
3451         wr32(hw, I40E_QINT_RQCTL(0), val);
3452
3453         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3454               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3455               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3456
3457         wr32(hw, I40E_QINT_TQCTL(0), val);
3458         i40e_flush(hw);
3459 }
3460
3461 /**
3462  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3463  * @pf: board private structure
3464  **/
3465 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3466 {
3467         struct i40e_hw *hw = &pf->hw;
3468
3469         wr32(hw, I40E_PFINT_DYN_CTL0,
3470              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3471         i40e_flush(hw);
3472 }
3473
3474 /**
3475  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3476  * @pf: board private structure
3477  * @clearpba: true when all pending interrupt events should be cleared
3478  **/
3479 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3480 {
3481         struct i40e_hw *hw = &pf->hw;
3482         u32 val;
3483
3484         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3485               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3486               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3487
3488         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3489         i40e_flush(hw);
3490 }
3491
3492 /**
3493  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3494  * @irq: interrupt number
3495  * @data: pointer to a q_vector
3496  **/
3497 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3498 {
3499         struct i40e_q_vector *q_vector = data;
3500
3501         if (!q_vector->tx.ring && !q_vector->rx.ring)
3502                 return IRQ_HANDLED;
3503
3504         napi_schedule_irqoff(&q_vector->napi);
3505
3506         return IRQ_HANDLED;
3507 }
3508
3509 /**
3510  * i40e_irq_affinity_notify - Callback for affinity changes
3511  * @notify: context as to what irq was changed
3512  * @mask: the new affinity mask
3513  *
3514  * This is a callback function used by the irq_set_affinity_notifier function
3515  * so that we may register to receive changes to the irq affinity masks.
3516  **/
3517 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3518                                      const cpumask_t *mask)
3519 {
3520         struct i40e_q_vector *q_vector =
3521                 container_of(notify, struct i40e_q_vector, affinity_notify);
3522
3523         q_vector->affinity_mask = *mask;
3524 }
3525
3526 /**
3527  * i40e_irq_affinity_release - Callback for affinity notifier release
3528  * @ref: internal core kernel usage
3529  *
3530  * This is a callback function used by the irq_set_affinity_notifier function
3531  * to inform the current notification subscriber that they will no longer
3532  * receive notifications.
3533  **/
3534 static void i40e_irq_affinity_release(struct kref *ref) {}
3535
3536 /**
3537  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3538  * @vsi: the VSI being configured
3539  * @basename: name for the vector
3540  *
3541  * Allocates MSI-X vectors and requests interrupts from the kernel.
3542  **/
3543 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3544 {
3545         int q_vectors = vsi->num_q_vectors;
3546         struct i40e_pf *pf = vsi->back;
3547         int base = vsi->base_vector;
3548         int rx_int_idx = 0;
3549         int tx_int_idx = 0;
3550         int vector, err;
3551         int irq_num;
3552
3553         for (vector = 0; vector < q_vectors; vector++) {
3554                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3555
3556                 irq_num = pf->msix_entries[base + vector].vector;
3557
3558                 if (q_vector->tx.ring && q_vector->rx.ring) {
3559                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3560                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3561                         tx_int_idx++;
3562                 } else if (q_vector->rx.ring) {
3563                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3564                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3565                 } else if (q_vector->tx.ring) {
3566                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3567                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3568                 } else {
3569                         /* skip this unused q_vector */
3570                         continue;
3571                 }
3572                 err = request_irq(irq_num,
3573                                   vsi->irq_handler,
3574                                   0,
3575                                   q_vector->name,
3576                                   q_vector);
3577                 if (err) {
3578                         dev_info(&pf->pdev->dev,
3579                                  "MSIX request_irq failed, error: %d\n", err);
3580                         goto free_queue_irqs;
3581                 }
3582
3583                 /* register for affinity change notifications */
3584                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3585                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3586                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3587                 /* assign the mask for this irq */
3588                 irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
3589         }
3590
3591         vsi->irqs_ready = true;
3592         return 0;
3593
3594 free_queue_irqs:
3595         while (vector) {
3596                 vector--;
3597                 irq_num = pf->msix_entries[base + vector].vector;
3598                 irq_set_affinity_notifier(irq_num, NULL);
3599                 irq_set_affinity_hint(irq_num, NULL);
3600                 free_irq(irq_num, &vsi->q_vectors[vector]);
3601         }
3602         return err;
3603 }
3604
3605 /**
3606  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3607  * @vsi: the VSI being un-configured
3608  **/
3609 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3610 {
3611         struct i40e_pf *pf = vsi->back;
3612         struct i40e_hw *hw = &pf->hw;
3613         int base = vsi->base_vector;
3614         int i;
3615
3616         for (i = 0; i < vsi->num_queue_pairs; i++) {
3617                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3618                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3619         }
3620
3621         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3622                 for (i = vsi->base_vector;
3623                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3624                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3625
3626                 i40e_flush(hw);
3627                 for (i = 0; i < vsi->num_q_vectors; i++)
3628                         synchronize_irq(pf->msix_entries[i + base].vector);
3629         } else {
3630                 /* Legacy and MSI mode - this stops all interrupt handling */
3631                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3632                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3633                 i40e_flush(hw);
3634                 synchronize_irq(pf->pdev->irq);
3635         }
3636 }
3637
3638 /**
3639  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3640  * @vsi: the VSI being configured
3641  **/
3642 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3643 {
3644         struct i40e_pf *pf = vsi->back;
3645         int i;
3646
3647         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3648                 for (i = 0; i < vsi->num_q_vectors; i++)
3649                         i40e_irq_dynamic_enable(vsi, i);
3650         } else {
3651                 i40e_irq_dynamic_enable_icr0(pf, true);
3652         }
3653
3654         i40e_flush(&pf->hw);
3655         return 0;
3656 }
3657
3658 /**
3659  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3660  * @pf: board private structure
3661  **/
3662 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3663 {
3664         /* Disable ICR 0 */
3665         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3666         i40e_flush(&pf->hw);
3667 }
3668
3669 /**
3670  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3671  * @irq: interrupt number
3672  * @data: pointer to a q_vector
3673  *
3674  * This is the handler used for all MSI/Legacy interrupts, and deals
3675  * with both queue and non-queue interrupts.  This is also used in
3676  * MSIX mode to handle the non-queue interrupts.
3677  **/
3678 static irqreturn_t i40e_intr(int irq, void *data)
3679 {
3680         struct i40e_pf *pf = (struct i40e_pf *)data;
3681         struct i40e_hw *hw = &pf->hw;
3682         irqreturn_t ret = IRQ_NONE;
3683         u32 icr0, icr0_remaining;
3684         u32 val, ena_mask;
3685
3686         icr0 = rd32(hw, I40E_PFINT_ICR0);
3687         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3688
3689         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3690         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3691                 goto enable_intr;
3692
3693         /* if interrupt but no bits showing, must be SWINT */
3694         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3695             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3696                 pf->sw_int_count++;
3697
3698         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3699             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3700                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3701                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3702                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3703         }
3704
3705         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3706         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3707                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3708                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3709
3710                 /* We do not have a way to disarm Queue causes while leaving
3711                  * interrupt enabled for all other causes, ideally
3712                  * interrupt should be disabled while we are in NAPI but
3713                  * this is not a performance path and napi_schedule()
3714                  * can deal with rescheduling.
3715                  */
3716                 if (!test_bit(__I40E_DOWN, &pf->state))
3717                         napi_schedule_irqoff(&q_vector->napi);
3718         }
3719
3720         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3721                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3722                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3723                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3724         }
3725
3726         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3727                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3728                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3729         }
3730
3731         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3732                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3733                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3734         }
3735
3736         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3737                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3738                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3739                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3740                 val = rd32(hw, I40E_GLGEN_RSTAT);
3741                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3742                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3743                 if (val == I40E_RESET_CORER) {
3744                         pf->corer_count++;
3745                 } else if (val == I40E_RESET_GLOBR) {
3746                         pf->globr_count++;
3747                 } else if (val == I40E_RESET_EMPR) {
3748                         pf->empr_count++;
3749                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3750                 }
3751         }
3752
3753         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3754                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3755                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3756                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3757                          rd32(hw, I40E_PFHMC_ERRORINFO),
3758                          rd32(hw, I40E_PFHMC_ERRORDATA));
3759         }
3760
3761         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3762                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3763
3764                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3765                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3766                         i40e_ptp_tx_hwtstamp(pf);
3767                 }
3768         }
3769
3770         /* If a critical error is pending we have no choice but to reset the
3771          * device.
3772          * Report and mask out any remaining unexpected interrupts.
3773          */
3774         icr0_remaining = icr0 & ena_mask;
3775         if (icr0_remaining) {
3776                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3777                          icr0_remaining);
3778                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3779                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3780                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3781                         dev_info(&pf->pdev->dev, "device will be reset\n");
3782                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3783                         i40e_service_event_schedule(pf);
3784                 }
3785                 ena_mask &= ~icr0_remaining;
3786         }
3787         ret = IRQ_HANDLED;
3788
3789 enable_intr:
3790         /* re-enable interrupt causes */
3791         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3792         if (!test_bit(__I40E_DOWN, &pf->state)) {
3793                 i40e_service_event_schedule(pf);
3794                 i40e_irq_dynamic_enable_icr0(pf, false);
3795         }
3796
3797         return ret;
3798 }
3799
3800 /**
3801  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3802  * @tx_ring:  tx ring to clean
3803  * @budget:   how many cleans we're allowed
3804  *
3805  * Returns true if there's any budget left (e.g. the clean is finished)
3806  **/
3807 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3808 {
3809         struct i40e_vsi *vsi = tx_ring->vsi;
3810         u16 i = tx_ring->next_to_clean;
3811         struct i40e_tx_buffer *tx_buf;
3812         struct i40e_tx_desc *tx_desc;
3813
3814         tx_buf = &tx_ring->tx_bi[i];
3815         tx_desc = I40E_TX_DESC(tx_ring, i);
3816         i -= tx_ring->count;
3817
3818         do {
3819                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3820
3821                 /* if next_to_watch is not set then there is no work pending */
3822                 if (!eop_desc)
3823                         break;
3824
3825                 /* prevent any other reads prior to eop_desc */
3826                 read_barrier_depends();
3827
3828                 /* if the descriptor isn't done, no work yet to do */
3829                 if (!(eop_desc->cmd_type_offset_bsz &
3830                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3831                         break;
3832
3833                 /* clear next_to_watch to prevent false hangs */
3834                 tx_buf->next_to_watch = NULL;
3835
3836                 tx_desc->buffer_addr = 0;
3837                 tx_desc->cmd_type_offset_bsz = 0;
3838                 /* move past filter desc */
3839                 tx_buf++;
3840                 tx_desc++;
3841                 i++;
3842                 if (unlikely(!i)) {
3843                         i -= tx_ring->count;
3844                         tx_buf = tx_ring->tx_bi;
3845                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3846                 }
3847                 /* unmap skb header data */
3848                 dma_unmap_single(tx_ring->dev,
3849                                  dma_unmap_addr(tx_buf, dma),
3850                                  dma_unmap_len(tx_buf, len),
3851                                  DMA_TO_DEVICE);
3852                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3853                         kfree(tx_buf->raw_buf);
3854
3855                 tx_buf->raw_buf = NULL;
3856                 tx_buf->tx_flags = 0;
3857                 tx_buf->next_to_watch = NULL;
3858                 dma_unmap_len_set(tx_buf, len, 0);
3859                 tx_desc->buffer_addr = 0;
3860                 tx_desc->cmd_type_offset_bsz = 0;
3861
3862                 /* move us past the eop_desc for start of next FD desc */
3863                 tx_buf++;
3864                 tx_desc++;
3865                 i++;
3866                 if (unlikely(!i)) {
3867                         i -= tx_ring->count;
3868                         tx_buf = tx_ring->tx_bi;
3869                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3870                 }
3871
3872                 /* update budget accounting */
3873                 budget--;
3874         } while (likely(budget));
3875
3876         i += tx_ring->count;
3877         tx_ring->next_to_clean = i;
3878
3879         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3880                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3881
3882         return budget > 0;
3883 }
3884
3885 /**
3886  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3887  * @irq: interrupt number
3888  * @data: pointer to a q_vector
3889  **/
3890 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3891 {
3892         struct i40e_q_vector *q_vector = data;
3893         struct i40e_vsi *vsi;
3894
3895         if (!q_vector->tx.ring)
3896                 return IRQ_HANDLED;
3897
3898         vsi = q_vector->tx.ring->vsi;
3899         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3900
3901         return IRQ_HANDLED;
3902 }
3903
3904 /**
3905  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3906  * @vsi: the VSI being configured
3907  * @v_idx: vector index
3908  * @qp_idx: queue pair index
3909  **/
3910 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3911 {
3912         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3913         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3914         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3915
3916         tx_ring->q_vector = q_vector;
3917         tx_ring->next = q_vector->tx.ring;
3918         q_vector->tx.ring = tx_ring;
3919         q_vector->tx.count++;
3920
3921         rx_ring->q_vector = q_vector;
3922         rx_ring->next = q_vector->rx.ring;
3923         q_vector->rx.ring = rx_ring;
3924         q_vector->rx.count++;
3925 }
3926
3927 /**
3928  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3929  * @vsi: the VSI being configured
3930  *
3931  * This function maps descriptor rings to the queue-specific vectors
3932  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3933  * one vector per queue pair, but on a constrained vector budget, we
3934  * group the queue pairs as "efficiently" as possible.
3935  **/
3936 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3937 {
3938         int qp_remaining = vsi->num_queue_pairs;
3939         int q_vectors = vsi->num_q_vectors;
3940         int num_ringpairs;
3941         int v_start = 0;
3942         int qp_idx = 0;
3943
3944         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3945          * group them so there are multiple queues per vector.
3946          * It is also important to go through all the vectors available to be
3947          * sure that if we don't use all the vectors, that the remaining vectors
3948          * are cleared. This is especially important when decreasing the
3949          * number of queues in use.
3950          */
3951         for (; v_start < q_vectors; v_start++) {
3952                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3953
3954                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3955
3956                 q_vector->num_ringpairs = num_ringpairs;
3957
3958                 q_vector->rx.count = 0;
3959                 q_vector->tx.count = 0;
3960                 q_vector->rx.ring = NULL;
3961                 q_vector->tx.ring = NULL;
3962
3963                 while (num_ringpairs--) {
3964                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3965                         qp_idx++;
3966                         qp_remaining--;
3967                 }
3968         }
3969 }
3970
3971 /**
3972  * i40e_vsi_request_irq - Request IRQ from the OS
3973  * @vsi: the VSI being configured
3974  * @basename: name for the vector
3975  **/
3976 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3977 {
3978         struct i40e_pf *pf = vsi->back;
3979         int err;
3980
3981         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3982                 err = i40e_vsi_request_irq_msix(vsi, basename);
3983         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3984                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3985                                   pf->int_name, pf);
3986         else
3987                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3988                                   pf->int_name, pf);
3989
3990         if (err)
3991                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3992
3993         return err;
3994 }
3995
3996 #ifdef CONFIG_NET_POLL_CONTROLLER
3997 /**
3998  * i40e_netpoll - A Polling 'interrupt' handler
3999  * @netdev: network interface device structure
4000  *
4001  * This is used by netconsole to send skbs without having to re-enable
4002  * interrupts.  It's not called while the normal interrupt routine is executing.
4003  **/
4004 #ifdef I40E_FCOE
4005 void i40e_netpoll(struct net_device *netdev)
4006 #else
4007 static void i40e_netpoll(struct net_device *netdev)
4008 #endif
4009 {
4010         struct i40e_netdev_priv *np = netdev_priv(netdev);
4011         struct i40e_vsi *vsi = np->vsi;
4012         struct i40e_pf *pf = vsi->back;
4013         int i;
4014
4015         /* if interface is down do nothing */
4016         if (test_bit(__I40E_DOWN, &vsi->state))
4017                 return;
4018
4019         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4020                 for (i = 0; i < vsi->num_q_vectors; i++)
4021                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4022         } else {
4023                 i40e_intr(pf->pdev->irq, netdev);
4024         }
4025 }
4026 #endif
4027
4028 /**
4029  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4030  * @pf: the PF being configured
4031  * @pf_q: the PF queue
4032  * @enable: enable or disable state of the queue
4033  *
4034  * This routine will wait for the given Tx queue of the PF to reach the
4035  * enabled or disabled state.
4036  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4037  * multiple retries; else will return 0 in case of success.
4038  **/
4039 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4040 {
4041         int i;
4042         u32 tx_reg;
4043
4044         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4045                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4046                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4047                         break;
4048
4049                 usleep_range(10, 20);
4050         }
4051         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4052                 return -ETIMEDOUT;
4053
4054         return 0;
4055 }
4056
4057 /**
4058  * i40e_vsi_control_tx - Start or stop a VSI's rings
4059  * @vsi: the VSI being configured
4060  * @enable: start or stop the rings
4061  **/
4062 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
4063 {
4064         struct i40e_pf *pf = vsi->back;
4065         struct i40e_hw *hw = &pf->hw;
4066         int i, j, pf_q, ret = 0;
4067         u32 tx_reg;
4068
4069         pf_q = vsi->base_queue;
4070         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4071
4072                 /* warn the TX unit of coming changes */
4073                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4074                 if (!enable)
4075                         usleep_range(10, 20);
4076
4077                 for (j = 0; j < 50; j++) {
4078                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4079                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4080                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4081                                 break;
4082                         usleep_range(1000, 2000);
4083                 }
4084                 /* Skip if the queue is already in the requested state */
4085                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4086                         continue;
4087
4088                 /* turn on/off the queue */
4089                 if (enable) {
4090                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4091                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4092                 } else {
4093                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4094                 }
4095
4096                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4097                 /* No waiting for the Tx queue to disable */
4098                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4099                         continue;
4100
4101                 /* wait for the change to finish */
4102                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
4103                 if (ret) {
4104                         dev_info(&pf->pdev->dev,
4105                                  "VSI seid %d Tx ring %d %sable timeout\n",
4106                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4107                         break;
4108                 }
4109         }
4110
4111         if (hw->revision_id == 0)
4112                 mdelay(50);
4113         return ret;
4114 }
4115
4116 /**
4117  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4118  * @pf: the PF being configured
4119  * @pf_q: the PF queue
4120  * @enable: enable or disable state of the queue
4121  *
4122  * This routine will wait for the given Rx queue of the PF to reach the
4123  * enabled or disabled state.
4124  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4125  * multiple retries; else will return 0 in case of success.
4126  **/
4127 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4128 {
4129         int i;
4130         u32 rx_reg;
4131
4132         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4133                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4134                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4135                         break;
4136
4137                 usleep_range(10, 20);
4138         }
4139         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4140                 return -ETIMEDOUT;
4141
4142         return 0;
4143 }
4144
4145 /**
4146  * i40e_vsi_control_rx - Start or stop a VSI's rings
4147  * @vsi: the VSI being configured
4148  * @enable: start or stop the rings
4149  **/
4150 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
4151 {
4152         struct i40e_pf *pf = vsi->back;
4153         struct i40e_hw *hw = &pf->hw;
4154         int i, j, pf_q, ret = 0;
4155         u32 rx_reg;
4156
4157         pf_q = vsi->base_queue;
4158         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4159                 for (j = 0; j < 50; j++) {
4160                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4161                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4162                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4163                                 break;
4164                         usleep_range(1000, 2000);
4165                 }
4166
4167                 /* Skip if the queue is already in the requested state */
4168                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4169                         continue;
4170
4171                 /* turn on/off the queue */
4172                 if (enable)
4173                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4174                 else
4175                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4176                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4177                 /* No waiting for the Tx queue to disable */
4178                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4179                         continue;
4180
4181                 /* wait for the change to finish */
4182                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4183                 if (ret) {
4184                         dev_info(&pf->pdev->dev,
4185                                  "VSI seid %d Rx ring %d %sable timeout\n",
4186                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4187                         break;
4188                 }
4189         }
4190
4191         return ret;
4192 }
4193
4194 /**
4195  * i40e_vsi_start_rings - Start a VSI's rings
4196  * @vsi: the VSI being configured
4197  **/
4198 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4199 {
4200         int ret = 0;
4201
4202         /* do rx first for enable and last for disable */
4203         ret = i40e_vsi_control_rx(vsi, true);
4204         if (ret)
4205                 return ret;
4206         ret = i40e_vsi_control_tx(vsi, true);
4207
4208         return ret;
4209 }
4210
4211 /**
4212  * i40e_vsi_stop_rings - Stop a VSI's rings
4213  * @vsi: the VSI being configured
4214  **/
4215 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4216 {
4217         /* do rx first for enable and last for disable
4218          * Ignore return value, we need to shutdown whatever we can
4219          */
4220         i40e_vsi_control_tx(vsi, false);
4221         i40e_vsi_control_rx(vsi, false);
4222 }
4223
4224 /**
4225  * i40e_vsi_free_irq - Free the irq association with the OS
4226  * @vsi: the VSI being configured
4227  **/
4228 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4229 {
4230         struct i40e_pf *pf = vsi->back;
4231         struct i40e_hw *hw = &pf->hw;
4232         int base = vsi->base_vector;
4233         u32 val, qp;
4234         int i;
4235
4236         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4237                 if (!vsi->q_vectors)
4238                         return;
4239
4240                 if (!vsi->irqs_ready)
4241                         return;
4242
4243                 vsi->irqs_ready = false;
4244                 for (i = 0; i < vsi->num_q_vectors; i++) {
4245                         int irq_num;
4246                         u16 vector;
4247
4248                         vector = i + base;
4249                         irq_num = pf->msix_entries[vector].vector;
4250
4251                         /* free only the irqs that were actually requested */
4252                         if (!vsi->q_vectors[i] ||
4253                             !vsi->q_vectors[i]->num_ringpairs)
4254                                 continue;
4255
4256                         /* clear the affinity notifier in the IRQ descriptor */
4257                         irq_set_affinity_notifier(irq_num, NULL);
4258                         /* clear the affinity_mask in the IRQ descriptor */
4259                         irq_set_affinity_hint(irq_num, NULL);
4260                         synchronize_irq(irq_num);
4261                         free_irq(irq_num, vsi->q_vectors[i]);
4262
4263                         /* Tear down the interrupt queue link list
4264                          *
4265                          * We know that they come in pairs and always
4266                          * the Rx first, then the Tx.  To clear the
4267                          * link list, stick the EOL value into the
4268                          * next_q field of the registers.
4269                          */
4270                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4271                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4272                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4273                         val |= I40E_QUEUE_END_OF_LIST
4274                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4275                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4276
4277                         while (qp != I40E_QUEUE_END_OF_LIST) {
4278                                 u32 next;
4279
4280                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4281
4282                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4283                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4284                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4285                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4286
4287                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4288                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4289
4290                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4291
4292                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4293
4294                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4295                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4296
4297                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4298                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4299                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4300                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4301
4302                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4303                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4304
4305                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4306                                 qp = next;
4307                         }
4308                 }
4309         } else {
4310                 free_irq(pf->pdev->irq, pf);
4311
4312                 val = rd32(hw, I40E_PFINT_LNKLST0);
4313                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4314                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4315                 val |= I40E_QUEUE_END_OF_LIST
4316                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4317                 wr32(hw, I40E_PFINT_LNKLST0, val);
4318
4319                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4320                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4321                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4322                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4323                          I40E_QINT_RQCTL_INTEVENT_MASK);
4324
4325                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4326                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4327
4328                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4329
4330                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4331
4332                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4333                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4334                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4335                          I40E_QINT_TQCTL_INTEVENT_MASK);
4336
4337                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4338                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4339
4340                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4341         }
4342 }
4343
4344 /**
4345  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4346  * @vsi: the VSI being configured
4347  * @v_idx: Index of vector to be freed
4348  *
4349  * This function frees the memory allocated to the q_vector.  In addition if
4350  * NAPI is enabled it will delete any references to the NAPI struct prior
4351  * to freeing the q_vector.
4352  **/
4353 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4354 {
4355         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4356         struct i40e_ring *ring;
4357
4358         if (!q_vector)
4359                 return;
4360
4361         /* disassociate q_vector from rings */
4362         i40e_for_each_ring(ring, q_vector->tx)
4363                 ring->q_vector = NULL;
4364
4365         i40e_for_each_ring(ring, q_vector->rx)
4366                 ring->q_vector = NULL;
4367
4368         /* only VSI w/ an associated netdev is set up w/ NAPI */
4369         if (vsi->netdev)
4370                 netif_napi_del(&q_vector->napi);
4371
4372         vsi->q_vectors[v_idx] = NULL;
4373
4374         kfree_rcu(q_vector, rcu);
4375 }
4376
4377 /**
4378  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4379  * @vsi: the VSI being un-configured
4380  *
4381  * This frees the memory allocated to the q_vectors and
4382  * deletes references to the NAPI struct.
4383  **/
4384 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4385 {
4386         int v_idx;
4387
4388         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4389                 i40e_free_q_vector(vsi, v_idx);
4390 }
4391
4392 /**
4393  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4394  * @pf: board private structure
4395  **/
4396 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4397 {
4398         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4399         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4400                 pci_disable_msix(pf->pdev);
4401                 kfree(pf->msix_entries);
4402                 pf->msix_entries = NULL;
4403                 kfree(pf->irq_pile);
4404                 pf->irq_pile = NULL;
4405         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4406                 pci_disable_msi(pf->pdev);
4407         }
4408         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4409 }
4410
4411 /**
4412  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4413  * @pf: board private structure
4414  *
4415  * We go through and clear interrupt specific resources and reset the structure
4416  * to pre-load conditions
4417  **/
4418 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4419 {
4420         int i;
4421
4422         i40e_stop_misc_vector(pf);
4423         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4424                 synchronize_irq(pf->msix_entries[0].vector);
4425                 free_irq(pf->msix_entries[0].vector, pf);
4426         }
4427
4428         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4429                       I40E_IWARP_IRQ_PILE_ID);
4430
4431         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4432         for (i = 0; i < pf->num_alloc_vsi; i++)
4433                 if (pf->vsi[i])
4434                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4435         i40e_reset_interrupt_capability(pf);
4436 }
4437
4438 /**
4439  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4440  * @vsi: the VSI being configured
4441  **/
4442 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4443 {
4444         int q_idx;
4445
4446         if (!vsi->netdev)
4447                 return;
4448
4449         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4450                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4451 }
4452
4453 /**
4454  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4455  * @vsi: the VSI being configured
4456  **/
4457 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4458 {
4459         int q_idx;
4460
4461         if (!vsi->netdev)
4462                 return;
4463
4464         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4465                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4466 }
4467
4468 /**
4469  * i40e_vsi_close - Shut down a VSI
4470  * @vsi: the vsi to be quelled
4471  **/
4472 static void i40e_vsi_close(struct i40e_vsi *vsi)
4473 {
4474         struct i40e_pf *pf = vsi->back;
4475         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4476                 i40e_down(vsi);
4477         i40e_vsi_free_irq(vsi);
4478         i40e_vsi_free_tx_resources(vsi);
4479         i40e_vsi_free_rx_resources(vsi);
4480         vsi->current_netdev_flags = 0;
4481         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
4482         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
4483                 pf->flags |=  I40E_FLAG_CLIENT_RESET;
4484 }
4485
4486 /**
4487  * i40e_quiesce_vsi - Pause a given VSI
4488  * @vsi: the VSI being paused
4489  **/
4490 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4491 {
4492         if (test_bit(__I40E_DOWN, &vsi->state))
4493                 return;
4494
4495         /* No need to disable FCoE VSI when Tx suspended */
4496         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4497             vsi->type == I40E_VSI_FCOE) {
4498                 dev_dbg(&vsi->back->pdev->dev,
4499                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4500                 return;
4501         }
4502
4503         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4504         if (vsi->netdev && netif_running(vsi->netdev))
4505                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4506         else
4507                 i40e_vsi_close(vsi);
4508 }
4509
4510 /**
4511  * i40e_unquiesce_vsi - Resume a given VSI
4512  * @vsi: the VSI being resumed
4513  **/
4514 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4515 {
4516         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4517                 return;
4518
4519         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4520         if (vsi->netdev && netif_running(vsi->netdev))
4521                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4522         else
4523                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4524 }
4525
4526 /**
4527  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4528  * @pf: the PF
4529  **/
4530 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4531 {
4532         int v;
4533
4534         for (v = 0; v < pf->num_alloc_vsi; v++) {
4535                 if (pf->vsi[v])
4536                         i40e_quiesce_vsi(pf->vsi[v]);
4537         }
4538 }
4539
4540 /**
4541  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4542  * @pf: the PF
4543  **/
4544 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4545 {
4546         int v;
4547
4548         for (v = 0; v < pf->num_alloc_vsi; v++) {
4549                 if (pf->vsi[v])
4550                         i40e_unquiesce_vsi(pf->vsi[v]);
4551         }
4552 }
4553
4554 #ifdef CONFIG_I40E_DCB
4555 /**
4556  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4557  * @vsi: the VSI being configured
4558  *
4559  * This function waits for the given VSI's queues to be disabled.
4560  **/
4561 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4562 {
4563         struct i40e_pf *pf = vsi->back;
4564         int i, pf_q, ret;
4565
4566         pf_q = vsi->base_queue;
4567         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4568                 /* Check and wait for the disable status of the queue */
4569                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4570                 if (ret) {
4571                         dev_info(&pf->pdev->dev,
4572                                  "VSI seid %d Tx ring %d disable timeout\n",
4573                                  vsi->seid, pf_q);
4574                         return ret;
4575                 }
4576         }
4577
4578         pf_q = vsi->base_queue;
4579         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4580                 /* Check and wait for the disable status of the queue */
4581                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4582                 if (ret) {
4583                         dev_info(&pf->pdev->dev,
4584                                  "VSI seid %d Rx ring %d disable timeout\n",
4585                                  vsi->seid, pf_q);
4586                         return ret;
4587                 }
4588         }
4589
4590         return 0;
4591 }
4592
4593 /**
4594  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4595  * @pf: the PF
4596  *
4597  * This function waits for the queues to be in disabled state for all the
4598  * VSIs that are managed by this PF.
4599  **/
4600 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4601 {
4602         int v, ret = 0;
4603
4604         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4605                 /* No need to wait for FCoE VSI queues */
4606                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4607                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4608                         if (ret)
4609                                 break;
4610                 }
4611         }
4612
4613         return ret;
4614 }
4615
4616 #endif
4617
4618 /**
4619  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4620  * @q_idx: TX queue number
4621  * @vsi: Pointer to VSI struct
4622  *
4623  * This function checks specified queue for given VSI. Detects hung condition.
4624  * Sets hung bit since it is two step process. Before next run of service task
4625  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4626  * hung condition remain unchanged and during subsequent run, this function
4627  * issues SW interrupt to recover from hung condition.
4628  **/
4629 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4630 {
4631         struct i40e_ring *tx_ring = NULL;
4632         struct i40e_pf  *pf;
4633         u32 head, val, tx_pending_hw;
4634         int i;
4635
4636         pf = vsi->back;
4637
4638         /* now that we have an index, find the tx_ring struct */
4639         for (i = 0; i < vsi->num_queue_pairs; i++) {
4640                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4641                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4642                                 tx_ring = vsi->tx_rings[i];
4643                                 break;
4644                         }
4645                 }
4646         }
4647
4648         if (!tx_ring)
4649                 return;
4650
4651         /* Read interrupt register */
4652         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4653                 val = rd32(&pf->hw,
4654                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4655                                                tx_ring->vsi->base_vector - 1));
4656         else
4657                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4658
4659         head = i40e_get_head(tx_ring);
4660
4661         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4662
4663         /* HW is done executing descriptors, updated HEAD write back,
4664          * but SW hasn't processed those descriptors. If interrupt is
4665          * not generated from this point ON, it could result into
4666          * dev_watchdog detecting timeout on those netdev_queue,
4667          * hence proactively trigger SW interrupt.
4668          */
4669         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4670                 /* NAPI Poll didn't run and clear since it was set */
4671                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4672                                        &tx_ring->q_vector->hung_detected)) {
4673                         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",
4674                                     vsi->seid, q_idx, tx_pending_hw,
4675                                     tx_ring->next_to_clean, head,
4676                                     tx_ring->next_to_use,
4677                                     readl(tx_ring->tail));
4678                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4679                                     vsi->seid, q_idx, val);
4680                         i40e_force_wb(vsi, tx_ring->q_vector);
4681                 } else {
4682                         /* First Chance - detected possible hung */
4683                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4684                                 &tx_ring->q_vector->hung_detected);
4685                 }
4686         }
4687
4688         /* This is the case where we have interrupts missing,
4689          * so the tx_pending in HW will most likely be 0, but we
4690          * will have tx_pending in SW since the WB happened but the
4691          * interrupt got lost.
4692          */
4693         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4694             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4695                 local_bh_disable();
4696                 if (napi_reschedule(&tx_ring->q_vector->napi))
4697                         tx_ring->tx_stats.tx_lost_interrupt++;
4698                 local_bh_enable();
4699         }
4700 }
4701
4702 /**
4703  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4704  * @pf:  pointer to PF struct
4705  *
4706  * LAN VSI has netdev and netdev has TX queues. This function is to check
4707  * each of those TX queues if they are hung, trigger recovery by issuing
4708  * SW interrupt.
4709  **/
4710 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4711 {
4712         struct net_device *netdev;
4713         struct i40e_vsi *vsi;
4714         int i;
4715
4716         /* Only for LAN VSI */
4717         vsi = pf->vsi[pf->lan_vsi];
4718
4719         if (!vsi)
4720                 return;
4721
4722         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4723         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4724             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4725                 return;
4726
4727         /* Make sure type is MAIN VSI */
4728         if (vsi->type != I40E_VSI_MAIN)
4729                 return;
4730
4731         netdev = vsi->netdev;
4732         if (!netdev)
4733                 return;
4734
4735         /* Bail out if netif_carrier is not OK */
4736         if (!netif_carrier_ok(netdev))
4737                 return;
4738
4739         /* Go thru' TX queues for netdev */
4740         for (i = 0; i < netdev->num_tx_queues; i++) {
4741                 struct netdev_queue *q;
4742
4743                 q = netdev_get_tx_queue(netdev, i);
4744                 if (q)
4745                         i40e_detect_recover_hung_queue(i, vsi);
4746         }
4747 }
4748
4749 /**
4750  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4751  * @pf: pointer to PF
4752  *
4753  * Get TC map for ISCSI PF type that will include iSCSI TC
4754  * and LAN TC.
4755  **/
4756 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4757 {
4758         struct i40e_dcb_app_priority_table app;
4759         struct i40e_hw *hw = &pf->hw;
4760         u8 enabled_tc = 1; /* TC0 is always enabled */
4761         u8 tc, i;
4762         /* Get the iSCSI APP TLV */
4763         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4764
4765         for (i = 0; i < dcbcfg->numapps; i++) {
4766                 app = dcbcfg->app[i];
4767                 if (app.selector == I40E_APP_SEL_TCPIP &&
4768                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4769                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4770                         enabled_tc |= BIT(tc);
4771                         break;
4772                 }
4773         }
4774
4775         return enabled_tc;
4776 }
4777
4778 /**
4779  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4780  * @dcbcfg: the corresponding DCBx configuration structure
4781  *
4782  * Return the number of TCs from given DCBx configuration
4783  **/
4784 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4785 {
4786         int i, tc_unused = 0;
4787         u8 num_tc = 0;
4788         u8 ret = 0;
4789
4790         /* Scan the ETS Config Priority Table to find
4791          * traffic class enabled for a given priority
4792          * and create a bitmask of enabled TCs
4793          */
4794         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4795                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4796
4797         /* Now scan the bitmask to check for
4798          * contiguous TCs starting with TC0
4799          */
4800         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4801                 if (num_tc & BIT(i)) {
4802                         if (!tc_unused) {
4803                                 ret++;
4804                         } else {
4805                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4806                                 return 1;
4807                         }
4808                 } else {
4809                         tc_unused = 1;
4810                 }
4811         }
4812
4813         /* There is always at least TC0 */
4814         if (!ret)
4815                 ret = 1;
4816
4817         return ret;
4818 }
4819
4820 /**
4821  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4822  * @dcbcfg: the corresponding DCBx configuration structure
4823  *
4824  * Query the current DCB configuration and return the number of
4825  * traffic classes enabled from the given DCBX config
4826  **/
4827 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4828 {
4829         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4830         u8 enabled_tc = 1;
4831         u8 i;
4832
4833         for (i = 0; i < num_tc; i++)
4834                 enabled_tc |= BIT(i);
4835
4836         return enabled_tc;
4837 }
4838
4839 /**
4840  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4841  * @pf: PF being queried
4842  *
4843  * Return number of traffic classes enabled for the given PF
4844  **/
4845 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4846 {
4847         struct i40e_hw *hw = &pf->hw;
4848         u8 i, enabled_tc = 1;
4849         u8 num_tc = 0;
4850         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4851
4852         /* If DCB is not enabled then always in single TC */
4853         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4854                 return 1;
4855
4856         /* SFP mode will be enabled for all TCs on port */
4857         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4858                 return i40e_dcb_get_num_tc(dcbcfg);
4859
4860         /* MFP mode return count of enabled TCs for this PF */
4861         if (pf->hw.func_caps.iscsi)
4862                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4863         else
4864                 return 1; /* Only TC0 */
4865
4866         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4867                 if (enabled_tc & BIT(i))
4868                         num_tc++;
4869         }
4870         return num_tc;
4871 }
4872
4873 /**
4874  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4875  * @pf: PF being queried
4876  *
4877  * Return a bitmap for enabled traffic classes for this PF.
4878  **/
4879 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4880 {
4881         /* If DCB is not enabled for this PF then just return default TC */
4882         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4883                 return I40E_DEFAULT_TRAFFIC_CLASS;
4884
4885         /* SFP mode we want PF to be enabled for all TCs */
4886         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4887                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4888
4889         /* MFP enabled and iSCSI PF type */
4890         if (pf->hw.func_caps.iscsi)
4891                 return i40e_get_iscsi_tc_map(pf);
4892         else
4893                 return I40E_DEFAULT_TRAFFIC_CLASS;
4894 }
4895
4896 /**
4897  * i40e_vsi_get_bw_info - Query VSI BW Information
4898  * @vsi: the VSI being queried
4899  *
4900  * Returns 0 on success, negative value on failure
4901  **/
4902 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4903 {
4904         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4905         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4906         struct i40e_pf *pf = vsi->back;
4907         struct i40e_hw *hw = &pf->hw;
4908         i40e_status ret;
4909         u32 tc_bw_max;
4910         int i;
4911
4912         /* Get the VSI level BW configuration */
4913         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4914         if (ret) {
4915                 dev_info(&pf->pdev->dev,
4916                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4917                          i40e_stat_str(&pf->hw, ret),
4918                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4919                 return -EINVAL;
4920         }
4921
4922         /* Get the VSI level BW configuration per TC */
4923         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4924                                                NULL);
4925         if (ret) {
4926                 dev_info(&pf->pdev->dev,
4927                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4928                          i40e_stat_str(&pf->hw, ret),
4929                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4930                 return -EINVAL;
4931         }
4932
4933         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4934                 dev_info(&pf->pdev->dev,
4935                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4936                          bw_config.tc_valid_bits,
4937                          bw_ets_config.tc_valid_bits);
4938                 /* Still continuing */
4939         }
4940
4941         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4942         vsi->bw_max_quanta = bw_config.max_bw;
4943         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4944                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4945         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4946                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4947                 vsi->bw_ets_limit_credits[i] =
4948                                         le16_to_cpu(bw_ets_config.credits[i]);
4949                 /* 3 bits out of 4 for each TC */
4950                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4951         }
4952
4953         return 0;
4954 }
4955
4956 /**
4957  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4958  * @vsi: the VSI being configured
4959  * @enabled_tc: TC bitmap
4960  * @bw_credits: BW shared credits per TC
4961  *
4962  * Returns 0 on success, negative value on failure
4963  **/
4964 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4965                                        u8 *bw_share)
4966 {
4967         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4968         i40e_status ret;
4969         int i;
4970
4971         bw_data.tc_valid_bits = enabled_tc;
4972         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4973                 bw_data.tc_bw_credits[i] = bw_share[i];
4974
4975         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4976                                        NULL);
4977         if (ret) {
4978                 dev_info(&vsi->back->pdev->dev,
4979                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4980                          vsi->back->hw.aq.asq_last_status);
4981                 return -EINVAL;
4982         }
4983
4984         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4985                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4986
4987         return 0;
4988 }
4989
4990 /**
4991  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4992  * @vsi: the VSI being configured
4993  * @enabled_tc: TC map to be enabled
4994  *
4995  **/
4996 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4997 {
4998         struct net_device *netdev = vsi->netdev;
4999         struct i40e_pf *pf = vsi->back;
5000         struct i40e_hw *hw = &pf->hw;
5001         u8 netdev_tc = 0;
5002         int i;
5003         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5004
5005         if (!netdev)
5006                 return;
5007
5008         if (!enabled_tc) {
5009                 netdev_reset_tc(netdev);
5010                 return;
5011         }
5012
5013         /* Set up actual enabled TCs on the VSI */
5014         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5015                 return;
5016
5017         /* set per TC queues for the VSI */
5018         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5019                 /* Only set TC queues for enabled tcs
5020                  *
5021                  * e.g. For a VSI that has TC0 and TC3 enabled the
5022                  * enabled_tc bitmap would be 0x00001001; the driver
5023                  * will set the numtc for netdev as 2 that will be
5024                  * referenced by the netdev layer as TC 0 and 1.
5025                  */
5026                 if (vsi->tc_config.enabled_tc & BIT(i))
5027                         netdev_set_tc_queue(netdev,
5028                                         vsi->tc_config.tc_info[i].netdev_tc,
5029                                         vsi->tc_config.tc_info[i].qcount,
5030                                         vsi->tc_config.tc_info[i].qoffset);
5031         }
5032
5033         /* Assign UP2TC map for the VSI */
5034         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5035                 /* Get the actual TC# for the UP */
5036                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5037                 /* Get the mapped netdev TC# for the UP */
5038                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5039                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5040         }
5041 }
5042
5043 /**
5044  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5045  * @vsi: the VSI being configured
5046  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5047  **/
5048 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5049                                       struct i40e_vsi_context *ctxt)
5050 {
5051         /* copy just the sections touched not the entire info
5052          * since not all sections are valid as returned by
5053          * update vsi params
5054          */
5055         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5056         memcpy(&vsi->info.queue_mapping,
5057                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5058         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5059                sizeof(vsi->info.tc_mapping));
5060 }
5061
5062 /**
5063  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5064  * @vsi: VSI to be configured
5065  * @enabled_tc: TC bitmap
5066  *
5067  * This configures a particular VSI for TCs that are mapped to the
5068  * given TC bitmap. It uses default bandwidth share for TCs across
5069  * VSIs to configure TC for a particular VSI.
5070  *
5071  * NOTE:
5072  * It is expected that the VSI queues have been quisced before calling
5073  * this function.
5074  **/
5075 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5076 {
5077         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5078         struct i40e_vsi_context ctxt;
5079         int ret = 0;
5080         int i;
5081
5082         /* Check if enabled_tc is same as existing or new TCs */
5083         if (vsi->tc_config.enabled_tc == enabled_tc)
5084                 return ret;
5085
5086         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5087         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5088                 if (enabled_tc & BIT(i))
5089                         bw_share[i] = 1;
5090         }
5091
5092         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5093         if (ret) {
5094                 dev_info(&vsi->back->pdev->dev,
5095                          "Failed configuring TC map %d for VSI %d\n",
5096                          enabled_tc, vsi->seid);
5097                 goto out;
5098         }
5099
5100         /* Update Queue Pairs Mapping for currently enabled UPs */
5101         ctxt.seid = vsi->seid;
5102         ctxt.pf_num = vsi->back->hw.pf_id;
5103         ctxt.vf_num = 0;
5104         ctxt.uplink_seid = vsi->uplink_seid;
5105         ctxt.info = vsi->info;
5106         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5107
5108         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5109                 ctxt.info.valid_sections |=
5110                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5111                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5112         }
5113
5114         /* Update the VSI after updating the VSI queue-mapping information */
5115         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
5116         if (ret) {
5117                 dev_info(&vsi->back->pdev->dev,
5118                          "Update vsi tc config failed, err %s aq_err %s\n",
5119                          i40e_stat_str(&vsi->back->hw, ret),
5120                          i40e_aq_str(&vsi->back->hw,
5121                                      vsi->back->hw.aq.asq_last_status));
5122                 goto out;
5123         }
5124         /* update the local VSI info with updated queue map */
5125         i40e_vsi_update_queue_map(vsi, &ctxt);
5126         vsi->info.valid_sections = 0;
5127
5128         /* Update current VSI BW information */
5129         ret = i40e_vsi_get_bw_info(vsi);
5130         if (ret) {
5131                 dev_info(&vsi->back->pdev->dev,
5132                          "Failed updating vsi bw info, err %s aq_err %s\n",
5133                          i40e_stat_str(&vsi->back->hw, ret),
5134                          i40e_aq_str(&vsi->back->hw,
5135                                      vsi->back->hw.aq.asq_last_status));
5136                 goto out;
5137         }
5138
5139         /* Update the netdev TC setup */
5140         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5141 out:
5142         return ret;
5143 }
5144
5145 /**
5146  * i40e_veb_config_tc - Configure TCs for given VEB
5147  * @veb: given VEB
5148  * @enabled_tc: TC bitmap
5149  *
5150  * Configures given TC bitmap for VEB (switching) element
5151  **/
5152 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
5153 {
5154         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
5155         struct i40e_pf *pf = veb->pf;
5156         int ret = 0;
5157         int i;
5158
5159         /* No TCs or already enabled TCs just return */
5160         if (!enabled_tc || veb->enabled_tc == enabled_tc)
5161                 return ret;
5162
5163         bw_data.tc_valid_bits = enabled_tc;
5164         /* bw_data.absolute_credits is not set (relative) */
5165
5166         /* Enable ETS TCs with equal BW Share for now */
5167         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5168                 if (enabled_tc & BIT(i))
5169                         bw_data.tc_bw_share_credits[i] = 1;
5170         }
5171
5172         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
5173                                                    &bw_data, NULL);
5174         if (ret) {
5175                 dev_info(&pf->pdev->dev,
5176                          "VEB bw config failed, err %s aq_err %s\n",
5177                          i40e_stat_str(&pf->hw, ret),
5178                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5179                 goto out;
5180         }
5181
5182         /* Update the BW information */
5183         ret = i40e_veb_get_bw_info(veb);
5184         if (ret) {
5185                 dev_info(&pf->pdev->dev,
5186                          "Failed getting veb bw config, err %s aq_err %s\n",
5187                          i40e_stat_str(&pf->hw, ret),
5188                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5189         }
5190
5191 out:
5192         return ret;
5193 }
5194
5195 #ifdef CONFIG_I40E_DCB
5196 /**
5197  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
5198  * @pf: PF struct
5199  *
5200  * Reconfigure VEB/VSIs on a given PF; it is assumed that
5201  * the caller would've quiesce all the VSIs before calling
5202  * this function
5203  **/
5204 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
5205 {
5206         u8 tc_map = 0;
5207         int ret;
5208         u8 v;
5209
5210         /* Enable the TCs available on PF to all VEBs */
5211         tc_map = i40e_pf_get_tc_map(pf);
5212         for (v = 0; v < I40E_MAX_VEB; v++) {
5213                 if (!pf->veb[v])
5214                         continue;
5215                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5216                 if (ret) {
5217                         dev_info(&pf->pdev->dev,
5218                                  "Failed configuring TC for VEB seid=%d\n",
5219                                  pf->veb[v]->seid);
5220                         /* Will try to configure as many components */
5221                 }
5222         }
5223
5224         /* Update each VSI */
5225         for (v = 0; v < pf->num_alloc_vsi; v++) {
5226                 if (!pf->vsi[v])
5227                         continue;
5228
5229                 /* - Enable all TCs for the LAN VSI
5230 #ifdef I40E_FCOE
5231                  * - For FCoE VSI only enable the TC configured
5232                  *   as per the APP TLV
5233 #endif
5234                  * - For all others keep them at TC0 for now
5235                  */
5236                 if (v == pf->lan_vsi)
5237                         tc_map = i40e_pf_get_tc_map(pf);
5238                 else
5239                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
5240 #ifdef I40E_FCOE
5241                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5242                         tc_map = i40e_get_fcoe_tc_map(pf);
5243 #endif /* #ifdef I40E_FCOE */
5244
5245                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5246                 if (ret) {
5247                         dev_info(&pf->pdev->dev,
5248                                  "Failed configuring TC for VSI seid=%d\n",
5249                                  pf->vsi[v]->seid);
5250                         /* Will try to configure as many components */
5251                 } else {
5252                         /* Re-configure VSI vectors based on updated TC map */
5253                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5254                         if (pf->vsi[v]->netdev)
5255                                 i40e_dcbnl_set_all(pf->vsi[v]);
5256                 }
5257         }
5258 }
5259
5260 /**
5261  * i40e_resume_port_tx - Resume port Tx
5262  * @pf: PF struct
5263  *
5264  * Resume a port's Tx and issue a PF reset in case of failure to
5265  * resume.
5266  **/
5267 static int i40e_resume_port_tx(struct i40e_pf *pf)
5268 {
5269         struct i40e_hw *hw = &pf->hw;
5270         int ret;
5271
5272         ret = i40e_aq_resume_port_tx(hw, NULL);
5273         if (ret) {
5274                 dev_info(&pf->pdev->dev,
5275                          "Resume Port Tx failed, err %s aq_err %s\n",
5276                           i40e_stat_str(&pf->hw, ret),
5277                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5278                 /* Schedule PF reset to recover */
5279                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5280                 i40e_service_event_schedule(pf);
5281         }
5282
5283         return ret;
5284 }
5285
5286 /**
5287  * i40e_init_pf_dcb - Initialize DCB configuration
5288  * @pf: PF being configured
5289  *
5290  * Query the current DCB configuration and cache it
5291  * in the hardware structure
5292  **/
5293 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5294 {
5295         struct i40e_hw *hw = &pf->hw;
5296         int err = 0;
5297
5298         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5299         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5300                 goto out;
5301
5302         /* Get the initial DCB configuration */
5303         err = i40e_init_dcb(hw);
5304         if (!err) {
5305                 /* Device/Function is not DCBX capable */
5306                 if ((!hw->func_caps.dcb) ||
5307                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5308                         dev_info(&pf->pdev->dev,
5309                                  "DCBX offload is not supported or is disabled for this PF.\n");
5310
5311                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5312                                 goto out;
5313
5314                 } else {
5315                         /* When status is not DISABLED then DCBX in FW */
5316                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5317                                        DCB_CAP_DCBX_VER_IEEE;
5318
5319                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5320                         /* Enable DCB tagging only when more than one TC
5321                          * or explicitly disable if only one TC
5322                          */
5323                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5324                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5325                         else
5326                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5327                         dev_dbg(&pf->pdev->dev,
5328                                 "DCBX offload is supported for this PF.\n");
5329                 }
5330         } else {
5331                 dev_info(&pf->pdev->dev,
5332                          "Query for DCB configuration failed, err %s aq_err %s\n",
5333                          i40e_stat_str(&pf->hw, err),
5334                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5335         }
5336
5337 out:
5338         return err;
5339 }
5340 #endif /* CONFIG_I40E_DCB */
5341 #define SPEED_SIZE 14
5342 #define FC_SIZE 8
5343 /**
5344  * i40e_print_link_message - print link up or down
5345  * @vsi: the VSI for which link needs a message
5346  */
5347 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5348 {
5349         enum i40e_aq_link_speed new_speed;
5350         char *speed = "Unknown";
5351         char *fc = "Unknown";
5352         char *fec = "";
5353         char *an = "";
5354
5355         new_speed = vsi->back->hw.phy.link_info.link_speed;
5356
5357         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
5358                 return;
5359         vsi->current_isup = isup;
5360         vsi->current_speed = new_speed;
5361         if (!isup) {
5362                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5363                 return;
5364         }
5365
5366         /* Warn user if link speed on NPAR enabled partition is not at
5367          * least 10GB
5368          */
5369         if (vsi->back->hw.func_caps.npar_enable &&
5370             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5371              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5372                 netdev_warn(vsi->netdev,
5373                             "The partition detected link speed that is less than 10Gbps\n");
5374
5375         switch (vsi->back->hw.phy.link_info.link_speed) {
5376         case I40E_LINK_SPEED_40GB:
5377                 speed = "40 G";
5378                 break;
5379         case I40E_LINK_SPEED_20GB:
5380                 speed = "20 G";
5381                 break;
5382         case I40E_LINK_SPEED_25GB:
5383                 speed = "25 G";
5384                 break;
5385         case I40E_LINK_SPEED_10GB:
5386                 speed = "10 G";
5387                 break;
5388         case I40E_LINK_SPEED_1GB:
5389                 speed = "1000 M";
5390                 break;
5391         case I40E_LINK_SPEED_100MB:
5392                 speed = "100 M";
5393                 break;
5394         default:
5395                 break;
5396         }
5397
5398         switch (vsi->back->hw.fc.current_mode) {
5399         case I40E_FC_FULL:
5400                 fc = "RX/TX";
5401                 break;
5402         case I40E_FC_TX_PAUSE:
5403                 fc = "TX";
5404                 break;
5405         case I40E_FC_RX_PAUSE:
5406                 fc = "RX";
5407                 break;
5408         default:
5409                 fc = "None";
5410                 break;
5411         }
5412
5413         if (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
5414                 fec = ", FEC: None";
5415                 an = ", Autoneg: False";
5416
5417                 if (vsi->back->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
5418                         an = ", Autoneg: True";
5419
5420                 if (vsi->back->hw.phy.link_info.fec_info &
5421                     I40E_AQ_CONFIG_FEC_KR_ENA)
5422                         fec = ", FEC: CL74 FC-FEC/BASE-R";
5423                 else if (vsi->back->hw.phy.link_info.fec_info &
5424                          I40E_AQ_CONFIG_FEC_RS_ENA)
5425                         fec = ", FEC: CL108 RS-FEC";
5426         }
5427
5428         netdev_info(vsi->netdev, "NIC Link is Up, %sbps Full Duplex%s%s, Flow Control: %s\n",
5429                     speed, fec, an, fc);
5430 }
5431
5432 /**
5433  * i40e_up_complete - Finish the last steps of bringing up a connection
5434  * @vsi: the VSI being configured
5435  **/
5436 static int i40e_up_complete(struct i40e_vsi *vsi)
5437 {
5438         struct i40e_pf *pf = vsi->back;
5439         int err;
5440
5441         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5442                 i40e_vsi_configure_msix(vsi);
5443         else
5444                 i40e_configure_msi_and_legacy(vsi);
5445
5446         /* start rings */
5447         err = i40e_vsi_start_rings(vsi);
5448         if (err)
5449                 return err;
5450
5451         clear_bit(__I40E_DOWN, &vsi->state);
5452         i40e_napi_enable_all(vsi);
5453         i40e_vsi_enable_irq(vsi);
5454
5455         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5456             (vsi->netdev)) {
5457                 i40e_print_link_message(vsi, true);
5458                 netif_tx_start_all_queues(vsi->netdev);
5459                 netif_carrier_on(vsi->netdev);
5460         } else if (vsi->netdev) {
5461                 i40e_print_link_message(vsi, false);
5462                 /* need to check for qualified module here*/
5463                 if ((pf->hw.phy.link_info.link_info &
5464                         I40E_AQ_MEDIA_AVAILABLE) &&
5465                     (!(pf->hw.phy.link_info.an_info &
5466                         I40E_AQ_QUALIFIED_MODULE)))
5467                         netdev_err(vsi->netdev,
5468                                    "the driver failed to link because an unqualified module was detected.");
5469         }
5470
5471         /* replay FDIR SB filters */
5472         if (vsi->type == I40E_VSI_FDIR) {
5473                 /* reset fd counters */
5474                 pf->fd_add_err = 0;
5475                 pf->fd_atr_cnt = 0;
5476                 i40e_fdir_filter_restore(vsi);
5477         }
5478
5479         /* On the next run of the service_task, notify any clients of the new
5480          * opened netdev
5481          */
5482         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5483         i40e_service_event_schedule(pf);
5484
5485         return 0;
5486 }
5487
5488 /**
5489  * i40e_vsi_reinit_locked - Reset the VSI
5490  * @vsi: the VSI being configured
5491  *
5492  * Rebuild the ring structs after some configuration
5493  * has changed, e.g. MTU size.
5494  **/
5495 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5496 {
5497         struct i40e_pf *pf = vsi->back;
5498
5499         WARN_ON(in_interrupt());
5500         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5501                 usleep_range(1000, 2000);
5502         i40e_down(vsi);
5503
5504         i40e_up(vsi);
5505         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5506 }
5507
5508 /**
5509  * i40e_up - Bring the connection back up after being down
5510  * @vsi: the VSI being configured
5511  **/
5512 int i40e_up(struct i40e_vsi *vsi)
5513 {
5514         int err;
5515
5516         err = i40e_vsi_configure(vsi);
5517         if (!err)
5518                 err = i40e_up_complete(vsi);
5519
5520         return err;
5521 }
5522
5523 /**
5524  * i40e_down - Shutdown the connection processing
5525  * @vsi: the VSI being stopped
5526  **/
5527 void i40e_down(struct i40e_vsi *vsi)
5528 {
5529         int i;
5530
5531         /* It is assumed that the caller of this function
5532          * sets the vsi->state __I40E_DOWN bit.
5533          */
5534         if (vsi->netdev) {
5535                 netif_carrier_off(vsi->netdev);
5536                 netif_tx_disable(vsi->netdev);
5537         }
5538         i40e_vsi_disable_irq(vsi);
5539         i40e_vsi_stop_rings(vsi);
5540         i40e_napi_disable_all(vsi);
5541
5542         for (i = 0; i < vsi->num_queue_pairs; i++) {
5543                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5544                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5545         }
5546
5547 }
5548
5549 /**
5550  * i40e_setup_tc - configure multiple traffic classes
5551  * @netdev: net device to configure
5552  * @tc: number of traffic classes to enable
5553  **/
5554 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5555 {
5556         struct i40e_netdev_priv *np = netdev_priv(netdev);
5557         struct i40e_vsi *vsi = np->vsi;
5558         struct i40e_pf *pf = vsi->back;
5559         u8 enabled_tc = 0;
5560         int ret = -EINVAL;
5561         int i;
5562
5563         /* Check if DCB enabled to continue */
5564         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5565                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5566                 goto exit;
5567         }
5568
5569         /* Check if MFP enabled */
5570         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5571                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5572                 goto exit;
5573         }
5574
5575         /* Check whether tc count is within enabled limit */
5576         if (tc > i40e_pf_get_num_tc(pf)) {
5577                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5578                 goto exit;
5579         }
5580
5581         /* Generate TC map for number of tc requested */
5582         for (i = 0; i < tc; i++)
5583                 enabled_tc |= BIT(i);
5584
5585         /* Requesting same TC configuration as already enabled */
5586         if (enabled_tc == vsi->tc_config.enabled_tc)
5587                 return 0;
5588
5589         /* Quiesce VSI queues */
5590         i40e_quiesce_vsi(vsi);
5591
5592         /* Configure VSI for enabled TCs */
5593         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5594         if (ret) {
5595                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5596                             vsi->seid);
5597                 goto exit;
5598         }
5599
5600         /* Unquiesce VSI */
5601         i40e_unquiesce_vsi(vsi);
5602
5603 exit:
5604         return ret;
5605 }
5606
5607 #ifdef I40E_FCOE
5608 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5609                     struct tc_to_netdev *tc)
5610 #else
5611 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5612                            struct tc_to_netdev *tc)
5613 #endif
5614 {
5615         if (tc->type != TC_SETUP_MQPRIO)
5616                 return -EINVAL;
5617
5618         tc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
5619
5620         return i40e_setup_tc(netdev, tc->mqprio->num_tc);
5621 }
5622
5623 /**
5624  * i40e_open - Called when a network interface is made active
5625  * @netdev: network interface device structure
5626  *
5627  * The open entry point is called when a network interface is made
5628  * active by the system (IFF_UP).  At this point all resources needed
5629  * for transmit and receive operations are allocated, the interrupt
5630  * handler is registered with the OS, the netdev watchdog subtask is
5631  * enabled, and the stack is notified that the interface is ready.
5632  *
5633  * Returns 0 on success, negative value on failure
5634  **/
5635 int i40e_open(struct net_device *netdev)
5636 {
5637         struct i40e_netdev_priv *np = netdev_priv(netdev);
5638         struct i40e_vsi *vsi = np->vsi;
5639         struct i40e_pf *pf = vsi->back;
5640         int err;
5641
5642         /* disallow open during test or if eeprom is broken */
5643         if (test_bit(__I40E_TESTING, &pf->state) ||
5644             test_bit(__I40E_BAD_EEPROM, &pf->state))
5645                 return -EBUSY;
5646
5647         netif_carrier_off(netdev);
5648
5649         err = i40e_vsi_open(vsi);
5650         if (err)
5651                 return err;
5652
5653         /* configure global TSO hardware offload settings */
5654         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5655                                                        TCP_FLAG_FIN) >> 16);
5656         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5657                                                        TCP_FLAG_FIN |
5658                                                        TCP_FLAG_CWR) >> 16);
5659         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5660
5661         udp_tunnel_get_rx_info(netdev);
5662
5663         return 0;
5664 }
5665
5666 /**
5667  * i40e_vsi_open -
5668  * @vsi: the VSI to open
5669  *
5670  * Finish initialization of the VSI.
5671  *
5672  * Returns 0 on success, negative value on failure
5673  **/
5674 int i40e_vsi_open(struct i40e_vsi *vsi)
5675 {
5676         struct i40e_pf *pf = vsi->back;
5677         char int_name[I40E_INT_NAME_STR_LEN];
5678         int err;
5679
5680         /* allocate descriptors */
5681         err = i40e_vsi_setup_tx_resources(vsi);
5682         if (err)
5683                 goto err_setup_tx;
5684         err = i40e_vsi_setup_rx_resources(vsi);
5685         if (err)
5686                 goto err_setup_rx;
5687
5688         err = i40e_vsi_configure(vsi);
5689         if (err)
5690                 goto err_setup_rx;
5691
5692         if (vsi->netdev) {
5693                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5694                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5695                 err = i40e_vsi_request_irq(vsi, int_name);
5696                 if (err)
5697                         goto err_setup_rx;
5698
5699                 /* Notify the stack of the actual queue counts. */
5700                 err = netif_set_real_num_tx_queues(vsi->netdev,
5701                                                    vsi->num_queue_pairs);
5702                 if (err)
5703                         goto err_set_queues;
5704
5705                 err = netif_set_real_num_rx_queues(vsi->netdev,
5706                                                    vsi->num_queue_pairs);
5707                 if (err)
5708                         goto err_set_queues;
5709
5710         } else if (vsi->type == I40E_VSI_FDIR) {
5711                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5712                          dev_driver_string(&pf->pdev->dev),
5713                          dev_name(&pf->pdev->dev));
5714                 err = i40e_vsi_request_irq(vsi, int_name);
5715
5716         } else {
5717                 err = -EINVAL;
5718                 goto err_setup_rx;
5719         }
5720
5721         err = i40e_up_complete(vsi);
5722         if (err)
5723                 goto err_up_complete;
5724
5725         return 0;
5726
5727 err_up_complete:
5728         i40e_down(vsi);
5729 err_set_queues:
5730         i40e_vsi_free_irq(vsi);
5731 err_setup_rx:
5732         i40e_vsi_free_rx_resources(vsi);
5733 err_setup_tx:
5734         i40e_vsi_free_tx_resources(vsi);
5735         if (vsi == pf->vsi[pf->lan_vsi])
5736                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5737
5738         return err;
5739 }
5740
5741 /**
5742  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5743  * @pf: Pointer to PF
5744  *
5745  * This function destroys the hlist where all the Flow Director
5746  * filters were saved.
5747  **/
5748 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5749 {
5750         struct i40e_fdir_filter *filter;
5751         struct i40e_flex_pit *pit_entry, *tmp;
5752         struct hlist_node *node2;
5753
5754         hlist_for_each_entry_safe(filter, node2,
5755                                   &pf->fdir_filter_list, fdir_node) {
5756                 hlist_del(&filter->fdir_node);
5757                 kfree(filter);
5758         }
5759
5760         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
5761                 list_del(&pit_entry->list);
5762                 kfree(pit_entry);
5763         }
5764         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
5765
5766         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
5767                 list_del(&pit_entry->list);
5768                 kfree(pit_entry);
5769         }
5770         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
5771
5772         pf->fdir_pf_active_filters = 0;
5773         pf->fd_tcp4_filter_cnt = 0;
5774         pf->fd_udp4_filter_cnt = 0;
5775         pf->fd_sctp4_filter_cnt = 0;
5776         pf->fd_ip4_filter_cnt = 0;
5777
5778         /* Reprogram the default input set for TCP/IPv4 */
5779         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
5780                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
5781                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
5782
5783         /* Reprogram the default input set for UDP/IPv4 */
5784         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
5785                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
5786                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
5787
5788         /* Reprogram the default input set for SCTP/IPv4 */
5789         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
5790                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
5791                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
5792
5793         /* Reprogram the default input set for Other/IPv4 */
5794         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
5795                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
5796 }
5797
5798 /**
5799  * i40e_close - Disables a network interface
5800  * @netdev: network interface device structure
5801  *
5802  * The close entry point is called when an interface is de-activated
5803  * by the OS.  The hardware is still under the driver's control, but
5804  * this netdev interface is disabled.
5805  *
5806  * Returns 0, this is not allowed to fail
5807  **/
5808 int i40e_close(struct net_device *netdev)
5809 {
5810         struct i40e_netdev_priv *np = netdev_priv(netdev);
5811         struct i40e_vsi *vsi = np->vsi;
5812
5813         i40e_vsi_close(vsi);
5814
5815         return 0;
5816 }
5817
5818 /**
5819  * i40e_do_reset - Start a PF or Core Reset sequence
5820  * @pf: board private structure
5821  * @reset_flags: which reset is requested
5822  *
5823  * The essential difference in resets is that the PF Reset
5824  * doesn't clear the packet buffers, doesn't reset the PE
5825  * firmware, and doesn't bother the other PFs on the chip.
5826  **/
5827 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5828 {
5829         u32 val;
5830
5831         WARN_ON(in_interrupt());
5832
5833
5834         /* do the biggest reset indicated */
5835         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5836
5837                 /* Request a Global Reset
5838                  *
5839                  * This will start the chip's countdown to the actual full
5840                  * chip reset event, and a warning interrupt to be sent
5841                  * to all PFs, including the requestor.  Our handler
5842                  * for the warning interrupt will deal with the shutdown
5843                  * and recovery of the switch setup.
5844                  */
5845                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5846                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5847                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5848                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5849
5850         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5851
5852                 /* Request a Core Reset
5853                  *
5854                  * Same as Global Reset, except does *not* include the MAC/PHY
5855                  */
5856                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5857                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5858                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5859                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5860                 i40e_flush(&pf->hw);
5861
5862         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5863
5864                 /* Request a PF Reset
5865                  *
5866                  * Resets only the PF-specific registers
5867                  *
5868                  * This goes directly to the tear-down and rebuild of
5869                  * the switch, since we need to do all the recovery as
5870                  * for the Core Reset.
5871                  */
5872                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5873                 i40e_handle_reset_warning(pf);
5874
5875         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5876                 int v;
5877
5878                 /* Find the VSI(s) that requested a re-init */
5879                 dev_info(&pf->pdev->dev,
5880                          "VSI reinit requested\n");
5881                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5882                         struct i40e_vsi *vsi = pf->vsi[v];
5883
5884                         if (vsi != NULL &&
5885                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5886                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5887                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5888                         }
5889                 }
5890         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5891                 int v;
5892
5893                 /* Find the VSI(s) that needs to be brought down */
5894                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5895                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5896                         struct i40e_vsi *vsi = pf->vsi[v];
5897
5898                         if (vsi != NULL &&
5899                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5900                                 set_bit(__I40E_DOWN, &vsi->state);
5901                                 i40e_down(vsi);
5902                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5903                         }
5904                 }
5905         } else {
5906                 dev_info(&pf->pdev->dev,
5907                          "bad reset request 0x%08x\n", reset_flags);
5908         }
5909 }
5910
5911 #ifdef CONFIG_I40E_DCB
5912 /**
5913  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5914  * @pf: board private structure
5915  * @old_cfg: current DCB config
5916  * @new_cfg: new DCB config
5917  **/
5918 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5919                             struct i40e_dcbx_config *old_cfg,
5920                             struct i40e_dcbx_config *new_cfg)
5921 {
5922         bool need_reconfig = false;
5923
5924         /* Check if ETS configuration has changed */
5925         if (memcmp(&new_cfg->etscfg,
5926                    &old_cfg->etscfg,
5927                    sizeof(new_cfg->etscfg))) {
5928                 /* If Priority Table has changed reconfig is needed */
5929                 if (memcmp(&new_cfg->etscfg.prioritytable,
5930                            &old_cfg->etscfg.prioritytable,
5931                            sizeof(new_cfg->etscfg.prioritytable))) {
5932                         need_reconfig = true;
5933                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5934                 }
5935
5936                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5937                            &old_cfg->etscfg.tcbwtable,
5938                            sizeof(new_cfg->etscfg.tcbwtable)))
5939                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5940
5941                 if (memcmp(&new_cfg->etscfg.tsatable,
5942                            &old_cfg->etscfg.tsatable,
5943                            sizeof(new_cfg->etscfg.tsatable)))
5944                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5945         }
5946
5947         /* Check if PFC configuration has changed */
5948         if (memcmp(&new_cfg->pfc,
5949                    &old_cfg->pfc,
5950                    sizeof(new_cfg->pfc))) {
5951                 need_reconfig = true;
5952                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5953         }
5954
5955         /* Check if APP Table has changed */
5956         if (memcmp(&new_cfg->app,
5957                    &old_cfg->app,
5958                    sizeof(new_cfg->app))) {
5959                 need_reconfig = true;
5960                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5961         }
5962
5963         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5964         return need_reconfig;
5965 }
5966
5967 /**
5968  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5969  * @pf: board private structure
5970  * @e: event info posted on ARQ
5971  **/
5972 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5973                                   struct i40e_arq_event_info *e)
5974 {
5975         struct i40e_aqc_lldp_get_mib *mib =
5976                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5977         struct i40e_hw *hw = &pf->hw;
5978         struct i40e_dcbx_config tmp_dcbx_cfg;
5979         bool need_reconfig = false;
5980         int ret = 0;
5981         u8 type;
5982
5983         /* Not DCB capable or capability disabled */
5984         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5985                 return ret;
5986
5987         /* Ignore if event is not for Nearest Bridge */
5988         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5989                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5990         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5991         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5992                 return ret;
5993
5994         /* Check MIB Type and return if event for Remote MIB update */
5995         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5996         dev_dbg(&pf->pdev->dev,
5997                 "LLDP event mib type %s\n", type ? "remote" : "local");
5998         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5999                 /* Update the remote cached instance and return */
6000                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
6001                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
6002                                 &hw->remote_dcbx_config);
6003                 goto exit;
6004         }
6005
6006         /* Store the old configuration */
6007         tmp_dcbx_cfg = hw->local_dcbx_config;
6008
6009         /* Reset the old DCBx configuration data */
6010         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
6011         /* Get updated DCBX data from firmware */
6012         ret = i40e_get_dcb_config(&pf->hw);
6013         if (ret) {
6014                 dev_info(&pf->pdev->dev,
6015                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
6016                          i40e_stat_str(&pf->hw, ret),
6017                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6018                 goto exit;
6019         }
6020
6021         /* No change detected in DCBX configs */
6022         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
6023                     sizeof(tmp_dcbx_cfg))) {
6024                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
6025                 goto exit;
6026         }
6027
6028         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
6029                                                &hw->local_dcbx_config);
6030
6031         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
6032
6033         if (!need_reconfig)
6034                 goto exit;
6035
6036         /* Enable DCB tagging only when more than one TC */
6037         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
6038                 pf->flags |= I40E_FLAG_DCB_ENABLED;
6039         else
6040                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6041
6042         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
6043         /* Reconfiguration needed quiesce all VSIs */
6044         i40e_pf_quiesce_all_vsi(pf);
6045
6046         /* Changes in configuration update VEB/VSI */
6047         i40e_dcb_reconfigure(pf);
6048
6049         ret = i40e_resume_port_tx(pf);
6050
6051         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
6052         /* In case of error no point in resuming VSIs */
6053         if (ret)
6054                 goto exit;
6055
6056         /* Wait for the PF's queues to be disabled */
6057         ret = i40e_pf_wait_queues_disabled(pf);
6058         if (ret) {
6059                 /* Schedule PF reset to recover */
6060                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6061                 i40e_service_event_schedule(pf);
6062         } else {
6063                 i40e_pf_unquiesce_all_vsi(pf);
6064         pf->flags |= (I40E_FLAG_SERVICE_CLIENT_REQUESTED |
6065                       I40E_FLAG_CLIENT_L2_CHANGE);
6066         }
6067
6068 exit:
6069         return ret;
6070 }
6071 #endif /* CONFIG_I40E_DCB */
6072
6073 /**
6074  * i40e_do_reset_safe - Protected reset path for userland calls.
6075  * @pf: board private structure
6076  * @reset_flags: which reset is requested
6077  *
6078  **/
6079 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
6080 {
6081         rtnl_lock();
6082         i40e_do_reset(pf, reset_flags);
6083         rtnl_unlock();
6084 }
6085
6086 /**
6087  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
6088  * @pf: board private structure
6089  * @e: event info posted on ARQ
6090  *
6091  * Handler for LAN Queue Overflow Event generated by the firmware for PF
6092  * and VF queues
6093  **/
6094 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
6095                                            struct i40e_arq_event_info *e)
6096 {
6097         struct i40e_aqc_lan_overflow *data =
6098                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
6099         u32 queue = le32_to_cpu(data->prtdcb_rupto);
6100         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
6101         struct i40e_hw *hw = &pf->hw;
6102         struct i40e_vf *vf;
6103         u16 vf_id;
6104
6105         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
6106                 queue, qtx_ctl);
6107
6108         /* Queue belongs to VF, find the VF and issue VF reset */
6109         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
6110             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
6111                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
6112                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
6113                 vf_id -= hw->func_caps.vf_base_id;
6114                 vf = &pf->vf[vf_id];
6115                 i40e_vc_notify_vf_reset(vf);
6116                 /* Allow VF to process pending reset notification */
6117                 msleep(20);
6118                 i40e_reset_vf(vf, false);
6119         }
6120 }
6121
6122 /**
6123  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
6124  * @pf: board private structure
6125  **/
6126 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
6127 {
6128         u32 val, fcnt_prog;
6129
6130         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
6131         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
6132         return fcnt_prog;
6133 }
6134
6135 /**
6136  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
6137  * @pf: board private structure
6138  **/
6139 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
6140 {
6141         u32 val, fcnt_prog;
6142
6143         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
6144         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
6145                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
6146                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
6147         return fcnt_prog;
6148 }
6149
6150 /**
6151  * i40e_get_global_fd_count - Get total FD filters programmed on device
6152  * @pf: board private structure
6153  **/
6154 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
6155 {
6156         u32 val, fcnt_prog;
6157
6158         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
6159         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
6160                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
6161                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
6162         return fcnt_prog;
6163 }
6164
6165 /**
6166  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
6167  * @pf: board private structure
6168  **/
6169 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
6170 {
6171         struct i40e_fdir_filter *filter;
6172         u32 fcnt_prog, fcnt_avail;
6173         struct hlist_node *node;
6174
6175         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6176                 return;
6177
6178         /* Check if, FD SB or ATR was auto disabled and if there is enough room
6179          * to re-enable
6180          */
6181         fcnt_prog = i40e_get_global_fd_count(pf);
6182         fcnt_avail = pf->fdir_pf_filter_count;
6183         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
6184             (pf->fd_add_err == 0) ||
6185             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
6186                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
6187                     (pf->hw_disabled_flags & I40E_FLAG_FD_SB_ENABLED)) {
6188                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_SB_ENABLED;
6189                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6190                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
6191                 }
6192         }
6193
6194         /* Wait for some more space to be available to turn on ATR. We also
6195          * must check that no existing ntuple rules for TCP are in effect
6196          */
6197         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
6198                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
6199                     (pf->hw_disabled_flags & I40E_FLAG_FD_ATR_ENABLED) &&
6200                     (pf->fd_tcp4_filter_cnt == 0)) {
6201                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6202                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6203                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
6204                 }
6205         }
6206
6207         /* if hw had a problem adding a filter, delete it */
6208         if (pf->fd_inv > 0) {
6209                 hlist_for_each_entry_safe(filter, node,
6210                                           &pf->fdir_filter_list, fdir_node) {
6211                         if (filter->fd_id == pf->fd_inv) {
6212                                 hlist_del(&filter->fdir_node);
6213                                 kfree(filter);
6214                                 pf->fdir_pf_active_filters--;
6215                         }
6216                 }
6217         }
6218 }
6219
6220 #define I40E_MIN_FD_FLUSH_INTERVAL 10
6221 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
6222 /**
6223  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
6224  * @pf: board private structure
6225  **/
6226 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
6227 {
6228         unsigned long min_flush_time;
6229         int flush_wait_retry = 50;
6230         bool disable_atr = false;
6231         int fd_room;
6232         int reg;
6233
6234         if (!time_after(jiffies, pf->fd_flush_timestamp +
6235                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
6236                 return;
6237
6238         /* If the flush is happening too quick and we have mostly SB rules we
6239          * should not re-enable ATR for some time.
6240          */
6241         min_flush_time = pf->fd_flush_timestamp +
6242                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
6243         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
6244
6245         if (!(time_after(jiffies, min_flush_time)) &&
6246             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
6247                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6248                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
6249                 disable_atr = true;
6250         }
6251
6252         pf->fd_flush_timestamp = jiffies;
6253         pf->hw_disabled_flags |= I40E_FLAG_FD_ATR_ENABLED;
6254         /* flush all filters */
6255         wr32(&pf->hw, I40E_PFQF_CTL_1,
6256              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6257         i40e_flush(&pf->hw);
6258         pf->fd_flush_cnt++;
6259         pf->fd_add_err = 0;
6260         do {
6261                 /* Check FD flush status every 5-6msec */
6262                 usleep_range(5000, 6000);
6263                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6264                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6265                         break;
6266         } while (flush_wait_retry--);
6267         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6268                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6269         } else {
6270                 /* replay sideband filters */
6271                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6272                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
6273                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6274                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6275                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6276                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6277         }
6278 }
6279
6280 /**
6281  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6282  * @pf: board private structure
6283  **/
6284 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6285 {
6286         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6287 }
6288
6289 /* We can see up to 256 filter programming desc in transit if the filters are
6290  * being applied really fast; before we see the first
6291  * filter miss error on Rx queue 0. Accumulating enough error messages before
6292  * reacting will make sure we don't cause flush too often.
6293  */
6294 #define I40E_MAX_FD_PROGRAM_ERROR 256
6295
6296 /**
6297  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6298  * @pf: board private structure
6299  **/
6300 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6301 {
6302
6303         /* if interface is down do nothing */
6304         if (test_bit(__I40E_DOWN, &pf->state))
6305                 return;
6306
6307         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6308                 i40e_fdir_flush_and_replay(pf);
6309
6310         i40e_fdir_check_and_reenable(pf);
6311
6312 }
6313
6314 /**
6315  * i40e_vsi_link_event - notify VSI of a link event
6316  * @vsi: vsi to be notified
6317  * @link_up: link up or down
6318  **/
6319 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6320 {
6321         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6322                 return;
6323
6324         switch (vsi->type) {
6325         case I40E_VSI_MAIN:
6326 #ifdef I40E_FCOE
6327         case I40E_VSI_FCOE:
6328 #endif
6329                 if (!vsi->netdev || !vsi->netdev_registered)
6330                         break;
6331
6332                 if (link_up) {
6333                         netif_carrier_on(vsi->netdev);
6334                         netif_tx_wake_all_queues(vsi->netdev);
6335                 } else {
6336                         netif_carrier_off(vsi->netdev);
6337                         netif_tx_stop_all_queues(vsi->netdev);
6338                 }
6339                 break;
6340
6341         case I40E_VSI_SRIOV:
6342         case I40E_VSI_VMDQ2:
6343         case I40E_VSI_CTRL:
6344         case I40E_VSI_IWARP:
6345         case I40E_VSI_MIRROR:
6346         default:
6347                 /* there is no notification for other VSIs */
6348                 break;
6349         }
6350 }
6351
6352 /**
6353  * i40e_veb_link_event - notify elements on the veb of a link event
6354  * @veb: veb to be notified
6355  * @link_up: link up or down
6356  **/
6357 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6358 {
6359         struct i40e_pf *pf;
6360         int i;
6361
6362         if (!veb || !veb->pf)
6363                 return;
6364         pf = veb->pf;
6365
6366         /* depth first... */
6367         for (i = 0; i < I40E_MAX_VEB; i++)
6368                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6369                         i40e_veb_link_event(pf->veb[i], link_up);
6370
6371         /* ... now the local VSIs */
6372         for (i = 0; i < pf->num_alloc_vsi; i++)
6373                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6374                         i40e_vsi_link_event(pf->vsi[i], link_up);
6375 }
6376
6377 /**
6378  * i40e_link_event - Update netif_carrier status
6379  * @pf: board private structure
6380  **/
6381 static void i40e_link_event(struct i40e_pf *pf)
6382 {
6383         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6384         u8 new_link_speed, old_link_speed;
6385         i40e_status status;
6386         bool new_link, old_link;
6387
6388         /* save off old link status information */
6389         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6390
6391         /* set this to force the get_link_status call to refresh state */
6392         pf->hw.phy.get_link_info = true;
6393
6394         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6395
6396         status = i40e_get_link_status(&pf->hw, &new_link);
6397
6398         /* On success, disable temp link polling */
6399         if (status == I40E_SUCCESS) {
6400                 if (pf->flags & I40E_FLAG_TEMP_LINK_POLLING)
6401                         pf->flags &= ~I40E_FLAG_TEMP_LINK_POLLING;
6402         } else {
6403                 /* Enable link polling temporarily until i40e_get_link_status
6404                  * returns I40E_SUCCESS
6405                  */
6406                 pf->flags |= I40E_FLAG_TEMP_LINK_POLLING;
6407                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6408                         status);
6409                 return;
6410         }
6411
6412         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6413         new_link_speed = pf->hw.phy.link_info.link_speed;
6414
6415         if (new_link == old_link &&
6416             new_link_speed == old_link_speed &&
6417             (test_bit(__I40E_DOWN, &vsi->state) ||
6418              new_link == netif_carrier_ok(vsi->netdev)))
6419                 return;
6420
6421         if (!test_bit(__I40E_DOWN, &vsi->state))
6422                 i40e_print_link_message(vsi, new_link);
6423
6424         /* Notify the base of the switch tree connected to
6425          * the link.  Floating VEBs are not notified.
6426          */
6427         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6428                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6429         else
6430                 i40e_vsi_link_event(vsi, new_link);
6431
6432         if (pf->vf)
6433                 i40e_vc_notify_link_state(pf);
6434
6435         if (pf->flags & I40E_FLAG_PTP)
6436                 i40e_ptp_set_increment(pf);
6437 }
6438
6439 /**
6440  * i40e_watchdog_subtask - periodic checks not using event driven response
6441  * @pf: board private structure
6442  **/
6443 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6444 {
6445         int i;
6446
6447         /* if interface is down do nothing */
6448         if (test_bit(__I40E_DOWN, &pf->state) ||
6449             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6450                 return;
6451
6452         /* make sure we don't do these things too often */
6453         if (time_before(jiffies, (pf->service_timer_previous +
6454                                   pf->service_timer_period)))
6455                 return;
6456         pf->service_timer_previous = jiffies;
6457
6458         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
6459             (pf->flags & I40E_FLAG_TEMP_LINK_POLLING))
6460                 i40e_link_event(pf);
6461
6462         /* Update the stats for active netdevs so the network stack
6463          * can look at updated numbers whenever it cares to
6464          */
6465         for (i = 0; i < pf->num_alloc_vsi; i++)
6466                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6467                         i40e_update_stats(pf->vsi[i]);
6468
6469         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6470                 /* Update the stats for the active switching components */
6471                 for (i = 0; i < I40E_MAX_VEB; i++)
6472                         if (pf->veb[i])
6473                                 i40e_update_veb_stats(pf->veb[i]);
6474         }
6475
6476         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6477 }
6478
6479 /**
6480  * i40e_reset_subtask - Set up for resetting the device and driver
6481  * @pf: board private structure
6482  **/
6483 static void i40e_reset_subtask(struct i40e_pf *pf)
6484 {
6485         u32 reset_flags = 0;
6486
6487         rtnl_lock();
6488         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6489                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6490                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6491         }
6492         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6493                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6494                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6495         }
6496         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6497                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6498                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6499         }
6500         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6501                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6502                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6503         }
6504         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6505                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6506                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6507         }
6508
6509         /* If there's a recovery already waiting, it takes
6510          * precedence before starting a new reset sequence.
6511          */
6512         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6513                 i40e_handle_reset_warning(pf);
6514                 goto unlock;
6515         }
6516
6517         /* If we're already down or resetting, just bail */
6518         if (reset_flags &&
6519             !test_bit(__I40E_DOWN, &pf->state) &&
6520             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6521                 i40e_do_reset(pf, reset_flags);
6522
6523 unlock:
6524         rtnl_unlock();
6525 }
6526
6527 /**
6528  * i40e_handle_link_event - Handle link event
6529  * @pf: board private structure
6530  * @e: event info posted on ARQ
6531  **/
6532 static void i40e_handle_link_event(struct i40e_pf *pf,
6533                                    struct i40e_arq_event_info *e)
6534 {
6535         struct i40e_aqc_get_link_status *status =
6536                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6537
6538         /* Do a new status request to re-enable LSE reporting
6539          * and load new status information into the hw struct
6540          * This completely ignores any state information
6541          * in the ARQ event info, instead choosing to always
6542          * issue the AQ update link status command.
6543          */
6544         i40e_link_event(pf);
6545
6546         /* check for unqualified module, if link is down */
6547         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6548             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6549             (!(status->link_info & I40E_AQ_LINK_UP)))
6550                 dev_err(&pf->pdev->dev,
6551                         "The driver failed to link because an unqualified module was detected.\n");
6552 }
6553
6554 /**
6555  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6556  * @pf: board private structure
6557  **/
6558 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6559 {
6560         struct i40e_arq_event_info event;
6561         struct i40e_hw *hw = &pf->hw;
6562         u16 pending, i = 0;
6563         i40e_status ret;
6564         u16 opcode;
6565         u32 oldval;
6566         u32 val;
6567
6568         /* Do not run clean AQ when PF reset fails */
6569         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6570                 return;
6571
6572         /* check for error indications */
6573         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6574         oldval = val;
6575         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6576                 if (hw->debug_mask & I40E_DEBUG_AQ)
6577                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6578                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6579         }
6580         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6581                 if (hw->debug_mask & I40E_DEBUG_AQ)
6582                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6583                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6584                 pf->arq_overflows++;
6585         }
6586         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6587                 if (hw->debug_mask & I40E_DEBUG_AQ)
6588                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6589                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6590         }
6591         if (oldval != val)
6592                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6593
6594         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6595         oldval = val;
6596         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6597                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6598                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6599                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6600         }
6601         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6602                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6603                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6604                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6605         }
6606         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6607                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6608                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6609                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6610         }
6611         if (oldval != val)
6612                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6613
6614         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6615         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6616         if (!event.msg_buf)
6617                 return;
6618
6619         do {
6620                 ret = i40e_clean_arq_element(hw, &event, &pending);
6621                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6622                         break;
6623                 else if (ret) {
6624                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6625                         break;
6626                 }
6627
6628                 opcode = le16_to_cpu(event.desc.opcode);
6629                 switch (opcode) {
6630
6631                 case i40e_aqc_opc_get_link_status:
6632                         i40e_handle_link_event(pf, &event);
6633                         break;
6634                 case i40e_aqc_opc_send_msg_to_pf:
6635                         ret = i40e_vc_process_vf_msg(pf,
6636                                         le16_to_cpu(event.desc.retval),
6637                                         le32_to_cpu(event.desc.cookie_high),
6638                                         le32_to_cpu(event.desc.cookie_low),
6639                                         event.msg_buf,
6640                                         event.msg_len);
6641                         break;
6642                 case i40e_aqc_opc_lldp_update_mib:
6643                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6644 #ifdef CONFIG_I40E_DCB
6645                         rtnl_lock();
6646                         ret = i40e_handle_lldp_event(pf, &event);
6647                         rtnl_unlock();
6648 #endif /* CONFIG_I40E_DCB */
6649                         break;
6650                 case i40e_aqc_opc_event_lan_overflow:
6651                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6652                         i40e_handle_lan_overflow_event(pf, &event);
6653                         break;
6654                 case i40e_aqc_opc_send_msg_to_peer:
6655                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6656                         break;
6657                 case i40e_aqc_opc_nvm_erase:
6658                 case i40e_aqc_opc_nvm_update:
6659                 case i40e_aqc_opc_oem_post_update:
6660                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6661                                    "ARQ NVM operation 0x%04x completed\n",
6662                                    opcode);
6663                         break;
6664                 default:
6665                         dev_info(&pf->pdev->dev,
6666                                  "ARQ: Unknown event 0x%04x ignored\n",
6667                                  opcode);
6668                         break;
6669                 }
6670         } while (pending && (i++ < pf->adminq_work_limit));
6671
6672         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6673         /* re-enable Admin queue interrupt cause */
6674         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6675         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6676         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6677         i40e_flush(hw);
6678
6679         kfree(event.msg_buf);
6680 }
6681
6682 /**
6683  * i40e_verify_eeprom - make sure eeprom is good to use
6684  * @pf: board private structure
6685  **/
6686 static void i40e_verify_eeprom(struct i40e_pf *pf)
6687 {
6688         int err;
6689
6690         err = i40e_diag_eeprom_test(&pf->hw);
6691         if (err) {
6692                 /* retry in case of garbage read */
6693                 err = i40e_diag_eeprom_test(&pf->hw);
6694                 if (err) {
6695                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6696                                  err);
6697                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6698                 }
6699         }
6700
6701         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6702                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6703                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6704         }
6705 }
6706
6707 /**
6708  * i40e_enable_pf_switch_lb
6709  * @pf: pointer to the PF structure
6710  *
6711  * enable switch loop back or die - no point in a return value
6712  **/
6713 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6714 {
6715         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6716         struct i40e_vsi_context ctxt;
6717         int ret;
6718
6719         ctxt.seid = pf->main_vsi_seid;
6720         ctxt.pf_num = pf->hw.pf_id;
6721         ctxt.vf_num = 0;
6722         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6723         if (ret) {
6724                 dev_info(&pf->pdev->dev,
6725                          "couldn't get PF vsi config, err %s aq_err %s\n",
6726                          i40e_stat_str(&pf->hw, ret),
6727                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6728                 return;
6729         }
6730         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6731         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6732         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6733
6734         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6735         if (ret) {
6736                 dev_info(&pf->pdev->dev,
6737                          "update vsi switch failed, err %s aq_err %s\n",
6738                          i40e_stat_str(&pf->hw, ret),
6739                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6740         }
6741 }
6742
6743 /**
6744  * i40e_disable_pf_switch_lb
6745  * @pf: pointer to the PF structure
6746  *
6747  * disable switch loop back or die - no point in a return value
6748  **/
6749 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6750 {
6751         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6752         struct i40e_vsi_context ctxt;
6753         int ret;
6754
6755         ctxt.seid = pf->main_vsi_seid;
6756         ctxt.pf_num = pf->hw.pf_id;
6757         ctxt.vf_num = 0;
6758         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6759         if (ret) {
6760                 dev_info(&pf->pdev->dev,
6761                          "couldn't get PF vsi config, err %s aq_err %s\n",
6762                          i40e_stat_str(&pf->hw, ret),
6763                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6764                 return;
6765         }
6766         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6767         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6768         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6769
6770         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6771         if (ret) {
6772                 dev_info(&pf->pdev->dev,
6773                          "update vsi switch failed, err %s aq_err %s\n",
6774                          i40e_stat_str(&pf->hw, ret),
6775                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6776         }
6777 }
6778
6779 /**
6780  * i40e_config_bridge_mode - Configure the HW bridge mode
6781  * @veb: pointer to the bridge instance
6782  *
6783  * Configure the loop back mode for the LAN VSI that is downlink to the
6784  * specified HW bridge instance. It is expected this function is called
6785  * when a new HW bridge is instantiated.
6786  **/
6787 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6788 {
6789         struct i40e_pf *pf = veb->pf;
6790
6791         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6792                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6793                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6794         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6795                 i40e_disable_pf_switch_lb(pf);
6796         else
6797                 i40e_enable_pf_switch_lb(pf);
6798 }
6799
6800 /**
6801  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6802  * @veb: pointer to the VEB instance
6803  *
6804  * This is a recursive function that first builds the attached VSIs then
6805  * recurses in to build the next layer of VEB.  We track the connections
6806  * through our own index numbers because the seid's from the HW could
6807  * change across the reset.
6808  **/
6809 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6810 {
6811         struct i40e_vsi *ctl_vsi = NULL;
6812         struct i40e_pf *pf = veb->pf;
6813         int v, veb_idx;
6814         int ret;
6815
6816         /* build VSI that owns this VEB, temporarily attached to base VEB */
6817         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6818                 if (pf->vsi[v] &&
6819                     pf->vsi[v]->veb_idx == veb->idx &&
6820                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6821                         ctl_vsi = pf->vsi[v];
6822                         break;
6823                 }
6824         }
6825         if (!ctl_vsi) {
6826                 dev_info(&pf->pdev->dev,
6827                          "missing owner VSI for veb_idx %d\n", veb->idx);
6828                 ret = -ENOENT;
6829                 goto end_reconstitute;
6830         }
6831         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6832                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6833         ret = i40e_add_vsi(ctl_vsi);
6834         if (ret) {
6835                 dev_info(&pf->pdev->dev,
6836                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6837                          veb->idx, ret);
6838                 goto end_reconstitute;
6839         }
6840         i40e_vsi_reset_stats(ctl_vsi);
6841
6842         /* create the VEB in the switch and move the VSI onto the VEB */
6843         ret = i40e_add_veb(veb, ctl_vsi);
6844         if (ret)
6845                 goto end_reconstitute;
6846
6847         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6848                 veb->bridge_mode = BRIDGE_MODE_VEB;
6849         else
6850                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6851         i40e_config_bridge_mode(veb);
6852
6853         /* create the remaining VSIs attached to this VEB */
6854         for (v = 0; v < pf->num_alloc_vsi; v++) {
6855                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6856                         continue;
6857
6858                 if (pf->vsi[v]->veb_idx == veb->idx) {
6859                         struct i40e_vsi *vsi = pf->vsi[v];
6860
6861                         vsi->uplink_seid = veb->seid;
6862                         ret = i40e_add_vsi(vsi);
6863                         if (ret) {
6864                                 dev_info(&pf->pdev->dev,
6865                                          "rebuild of vsi_idx %d failed: %d\n",
6866                                          v, ret);
6867                                 goto end_reconstitute;
6868                         }
6869                         i40e_vsi_reset_stats(vsi);
6870                 }
6871         }
6872
6873         /* create any VEBs attached to this VEB - RECURSION */
6874         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6875                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6876                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6877                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6878                         if (ret)
6879                                 break;
6880                 }
6881         }
6882
6883 end_reconstitute:
6884         return ret;
6885 }
6886
6887 /**
6888  * i40e_get_capabilities - get info about the HW
6889  * @pf: the PF struct
6890  **/
6891 static int i40e_get_capabilities(struct i40e_pf *pf)
6892 {
6893         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6894         u16 data_size;
6895         int buf_len;
6896         int err;
6897
6898         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6899         do {
6900                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6901                 if (!cap_buf)
6902                         return -ENOMEM;
6903
6904                 /* this loads the data into the hw struct for us */
6905                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6906                                             &data_size,
6907                                             i40e_aqc_opc_list_func_capabilities,
6908                                             NULL);
6909                 /* data loaded, buffer no longer needed */
6910                 kfree(cap_buf);
6911
6912                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6913                         /* retry with a larger buffer */
6914                         buf_len = data_size;
6915                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6916                         dev_info(&pf->pdev->dev,
6917                                  "capability discovery failed, err %s aq_err %s\n",
6918                                  i40e_stat_str(&pf->hw, err),
6919                                  i40e_aq_str(&pf->hw,
6920                                              pf->hw.aq.asq_last_status));
6921                         return -ENODEV;
6922                 }
6923         } while (err);
6924
6925         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6926                 dev_info(&pf->pdev->dev,
6927                          "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",
6928                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6929                          pf->hw.func_caps.num_msix_vectors,
6930                          pf->hw.func_caps.num_msix_vectors_vf,
6931                          pf->hw.func_caps.fd_filters_guaranteed,
6932                          pf->hw.func_caps.fd_filters_best_effort,
6933                          pf->hw.func_caps.num_tx_qp,
6934                          pf->hw.func_caps.num_vsis);
6935
6936 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6937                        + pf->hw.func_caps.num_vfs)
6938         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6939                 dev_info(&pf->pdev->dev,
6940                          "got num_vsis %d, setting num_vsis to %d\n",
6941                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6942                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6943         }
6944
6945         return 0;
6946 }
6947
6948 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6949
6950 /**
6951  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6952  * @pf: board private structure
6953  **/
6954 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6955 {
6956         struct i40e_vsi *vsi;
6957
6958         /* quick workaround for an NVM issue that leaves a critical register
6959          * uninitialized
6960          */
6961         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6962                 static const u32 hkey[] = {
6963                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6964                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6965                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6966                         0x95b3a76d};
6967                 int i;
6968
6969                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6970                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6971         }
6972
6973         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6974                 return;
6975
6976         /* find existing VSI and see if it needs configuring */
6977         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6978
6979         /* create a new VSI if none exists */
6980         if (!vsi) {
6981                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6982                                      pf->vsi[pf->lan_vsi]->seid, 0);
6983                 if (!vsi) {
6984                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6985                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6986                         return;
6987                 }
6988         }
6989
6990         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6991 }
6992
6993 /**
6994  * i40e_fdir_teardown - release the Flow Director resources
6995  * @pf: board private structure
6996  **/
6997 static void i40e_fdir_teardown(struct i40e_pf *pf)
6998 {
6999         struct i40e_vsi *vsi;
7000
7001         i40e_fdir_filter_exit(pf);
7002         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
7003         if (vsi)
7004                 i40e_vsi_release(vsi);
7005 }
7006
7007 /**
7008  * i40e_prep_for_reset - prep for the core to reset
7009  * @pf: board private structure
7010  *
7011  * Close up the VFs and other things in prep for PF Reset.
7012   **/
7013 static void i40e_prep_for_reset(struct i40e_pf *pf)
7014 {
7015         struct i40e_hw *hw = &pf->hw;
7016         i40e_status ret = 0;
7017         u32 v;
7018
7019         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
7020         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
7021                 return;
7022         if (i40e_check_asq_alive(&pf->hw))
7023                 i40e_vc_notify_reset(pf);
7024
7025         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
7026
7027         /* quiesce the VSIs and their queues that are not already DOWN */
7028         i40e_pf_quiesce_all_vsi(pf);
7029
7030         for (v = 0; v < pf->num_alloc_vsi; v++) {
7031                 if (pf->vsi[v])
7032                         pf->vsi[v]->seid = 0;
7033         }
7034
7035         i40e_shutdown_adminq(&pf->hw);
7036
7037         /* call shutdown HMC */
7038         if (hw->hmc.hmc_obj) {
7039                 ret = i40e_shutdown_lan_hmc(hw);
7040                 if (ret)
7041                         dev_warn(&pf->pdev->dev,
7042                                  "shutdown_lan_hmc failed: %d\n", ret);
7043         }
7044 }
7045
7046 /**
7047  * i40e_send_version - update firmware with driver version
7048  * @pf: PF struct
7049  */
7050 static void i40e_send_version(struct i40e_pf *pf)
7051 {
7052         struct i40e_driver_version dv;
7053
7054         dv.major_version = DRV_VERSION_MAJOR;
7055         dv.minor_version = DRV_VERSION_MINOR;
7056         dv.build_version = DRV_VERSION_BUILD;
7057         dv.subbuild_version = 0;
7058         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
7059         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
7060 }
7061
7062 /**
7063  * i40e_reset_and_rebuild - reset and rebuild using a saved config
7064  * @pf: board private structure
7065  * @reinit: if the Main VSI needs to re-initialized.
7066  **/
7067 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
7068 {
7069         struct i40e_hw *hw = &pf->hw;
7070         u8 set_fc_aq_fail = 0;
7071         i40e_status ret;
7072         u32 val;
7073         u32 v;
7074
7075         /* Now we wait for GRST to settle out.
7076          * We don't have to delete the VEBs or VSIs from the hw switch
7077          * because the reset will make them disappear.
7078          */
7079         ret = i40e_pf_reset(hw);
7080         if (ret) {
7081                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
7082                 set_bit(__I40E_RESET_FAILED, &pf->state);
7083                 goto clear_recovery;
7084         }
7085         pf->pfr_count++;
7086
7087         if (test_bit(__I40E_DOWN, &pf->state))
7088                 goto clear_recovery;
7089         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
7090
7091         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
7092         ret = i40e_init_adminq(&pf->hw);
7093         if (ret) {
7094                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
7095                          i40e_stat_str(&pf->hw, ret),
7096                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7097                 goto clear_recovery;
7098         }
7099
7100         /* re-verify the eeprom if we just had an EMP reset */
7101         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
7102                 i40e_verify_eeprom(pf);
7103
7104         i40e_clear_pxe_mode(hw);
7105         ret = i40e_get_capabilities(pf);
7106         if (ret)
7107                 goto end_core_reset;
7108
7109         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7110                                 hw->func_caps.num_rx_qp,
7111                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7112         if (ret) {
7113                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
7114                 goto end_core_reset;
7115         }
7116         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7117         if (ret) {
7118                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
7119                 goto end_core_reset;
7120         }
7121
7122 #ifdef CONFIG_I40E_DCB
7123         ret = i40e_init_pf_dcb(pf);
7124         if (ret) {
7125                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
7126                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
7127                 /* Continue without DCB enabled */
7128         }
7129 #endif /* CONFIG_I40E_DCB */
7130 #ifdef I40E_FCOE
7131         i40e_init_pf_fcoe(pf);
7132
7133 #endif
7134         /* do basic switch setup */
7135         ret = i40e_setup_pf_switch(pf, reinit);
7136         if (ret)
7137                 goto end_core_reset;
7138
7139         /* The driver only wants link up/down and module qualification
7140          * reports from firmware.  Note the negative logic.
7141          */
7142         ret = i40e_aq_set_phy_int_mask(&pf->hw,
7143                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
7144                                          I40E_AQ_EVENT_MEDIA_NA |
7145                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
7146         if (ret)
7147                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
7148                          i40e_stat_str(&pf->hw, ret),
7149                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7150
7151         /* make sure our flow control settings are restored */
7152         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
7153         if (ret)
7154                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
7155                         i40e_stat_str(&pf->hw, ret),
7156                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7157
7158         /* Rebuild the VSIs and VEBs that existed before reset.
7159          * They are still in our local switch element arrays, so only
7160          * need to rebuild the switch model in the HW.
7161          *
7162          * If there were VEBs but the reconstitution failed, we'll try
7163          * try to recover minimal use by getting the basic PF VSI working.
7164          */
7165         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
7166                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
7167                 /* find the one VEB connected to the MAC, and find orphans */
7168                 for (v = 0; v < I40E_MAX_VEB; v++) {
7169                         if (!pf->veb[v])
7170                                 continue;
7171
7172                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
7173                             pf->veb[v]->uplink_seid == 0) {
7174                                 ret = i40e_reconstitute_veb(pf->veb[v]);
7175
7176                                 if (!ret)
7177                                         continue;
7178
7179                                 /* If Main VEB failed, we're in deep doodoo,
7180                                  * so give up rebuilding the switch and set up
7181                                  * for minimal rebuild of PF VSI.
7182                                  * If orphan failed, we'll report the error
7183                                  * but try to keep going.
7184                                  */
7185                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
7186                                         dev_info(&pf->pdev->dev,
7187                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
7188                                                  ret);
7189                                         pf->vsi[pf->lan_vsi]->uplink_seid
7190                                                                 = pf->mac_seid;
7191                                         break;
7192                                 } else if (pf->veb[v]->uplink_seid == 0) {
7193                                         dev_info(&pf->pdev->dev,
7194                                                  "rebuild of orphan VEB failed: %d\n",
7195                                                  ret);
7196                                 }
7197                         }
7198                 }
7199         }
7200
7201         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
7202                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
7203                 /* no VEB, so rebuild only the Main VSI */
7204                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
7205                 if (ret) {
7206                         dev_info(&pf->pdev->dev,
7207                                  "rebuild of Main VSI failed: %d\n", ret);
7208                         goto end_core_reset;
7209                 }
7210         }
7211
7212         /* Reconfigure hardware for allowing smaller MSS in the case
7213          * of TSO, so that we avoid the MDD being fired and causing
7214          * a reset in the case of small MSS+TSO.
7215          */
7216 #define I40E_REG_MSS          0x000E64DC
7217 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
7218 #define I40E_64BYTE_MSS       0x400000
7219         val = rd32(hw, I40E_REG_MSS);
7220         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
7221                 val &= ~I40E_REG_MSS_MIN_MASK;
7222                 val |= I40E_64BYTE_MSS;
7223                 wr32(hw, I40E_REG_MSS, val);
7224         }
7225
7226         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
7227                 msleep(75);
7228                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
7229                 if (ret)
7230                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
7231                                  i40e_stat_str(&pf->hw, ret),
7232                                  i40e_aq_str(&pf->hw,
7233                                              pf->hw.aq.asq_last_status));
7234         }
7235         /* reinit the misc interrupt */
7236         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7237                 ret = i40e_setup_misc_vector(pf);
7238
7239         /* Add a filter to drop all Flow control frames from any VSI from being
7240          * transmitted. By doing so we stop a malicious VF from sending out
7241          * PAUSE or PFC frames and potentially controlling traffic for other
7242          * PF/VF VSIs.
7243          * The FW can still send Flow control frames if enabled.
7244          */
7245         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
7246                                                        pf->main_vsi_seid);
7247
7248         /* restart the VSIs that were rebuilt and running before the reset */
7249         i40e_pf_unquiesce_all_vsi(pf);
7250
7251         if (pf->num_alloc_vfs) {
7252                 for (v = 0; v < pf->num_alloc_vfs; v++)
7253                         i40e_reset_vf(&pf->vf[v], true);
7254         }
7255
7256         /* tell the firmware that we're starting */
7257         i40e_send_version(pf);
7258
7259 end_core_reset:
7260         clear_bit(__I40E_RESET_FAILED, &pf->state);
7261 clear_recovery:
7262         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7263 }
7264
7265 /**
7266  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7267  * @pf: board private structure
7268  *
7269  * Close up the VFs and other things in prep for a Core Reset,
7270  * then get ready to rebuild the world.
7271  **/
7272 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7273 {
7274         i40e_prep_for_reset(pf);
7275         i40e_reset_and_rebuild(pf, false);
7276 }
7277
7278 /**
7279  * i40e_handle_mdd_event
7280  * @pf: pointer to the PF structure
7281  *
7282  * Called from the MDD irq handler to identify possibly malicious vfs
7283  **/
7284 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7285 {
7286         struct i40e_hw *hw = &pf->hw;
7287         bool mdd_detected = false;
7288         bool pf_mdd_detected = false;
7289         struct i40e_vf *vf;
7290         u32 reg;
7291         int i;
7292
7293         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7294                 return;
7295
7296         /* find what triggered the MDD event */
7297         reg = rd32(hw, I40E_GL_MDET_TX);
7298         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7299                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7300                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7301                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7302                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7303                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7304                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7305                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7306                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7307                                 pf->hw.func_caps.base_queue;
7308                 if (netif_msg_tx_err(pf))
7309                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7310                                  event, queue, pf_num, vf_num);
7311                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7312                 mdd_detected = true;
7313         }
7314         reg = rd32(hw, I40E_GL_MDET_RX);
7315         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7316                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7317                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7318                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7319                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7320                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7321                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7322                                 pf->hw.func_caps.base_queue;
7323                 if (netif_msg_rx_err(pf))
7324                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7325                                  event, queue, func);
7326                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7327                 mdd_detected = true;
7328         }
7329
7330         if (mdd_detected) {
7331                 reg = rd32(hw, I40E_PF_MDET_TX);
7332                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7333                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7334                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7335                         pf_mdd_detected = true;
7336                 }
7337                 reg = rd32(hw, I40E_PF_MDET_RX);
7338                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7339                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7340                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7341                         pf_mdd_detected = true;
7342                 }
7343                 /* Queue belongs to the PF, initiate a reset */
7344                 if (pf_mdd_detected) {
7345                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7346                         i40e_service_event_schedule(pf);
7347                 }
7348         }
7349
7350         /* see if one of the VFs needs its hand slapped */
7351         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7352                 vf = &(pf->vf[i]);
7353                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7354                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7355                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7356                         vf->num_mdd_events++;
7357                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7358                                  i);
7359                 }
7360
7361                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7362                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7363                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7364                         vf->num_mdd_events++;
7365                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7366                                  i);
7367                 }
7368
7369                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7370                         dev_info(&pf->pdev->dev,
7371                                  "Too many MDD events on VF %d, disabled\n", i);
7372                         dev_info(&pf->pdev->dev,
7373                                  "Use PF Control I/F to re-enable the VF\n");
7374                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7375                 }
7376         }
7377
7378         /* re-enable mdd interrupt cause */
7379         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7380         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7381         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7382         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7383         i40e_flush(hw);
7384 }
7385
7386 /**
7387  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7388  * @pf: board private structure
7389  **/
7390 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7391 {
7392         struct i40e_hw *hw = &pf->hw;
7393         i40e_status ret;
7394         u16 port;
7395         int i;
7396
7397         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7398                 return;
7399
7400         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7401
7402         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7403                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7404                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7405                         port = pf->udp_ports[i].index;
7406                         if (port)
7407                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7408                                                         pf->udp_ports[i].type,
7409                                                         NULL, NULL);
7410                         else
7411                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7412
7413                         if (ret) {
7414                                 dev_dbg(&pf->pdev->dev,
7415                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7416                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7417                                         port ? "add" : "delete",
7418                                         port, i,
7419                                         i40e_stat_str(&pf->hw, ret),
7420                                         i40e_aq_str(&pf->hw,
7421                                                     pf->hw.aq.asq_last_status));
7422                                 pf->udp_ports[i].index = 0;
7423                         }
7424                 }
7425         }
7426 }
7427
7428 /**
7429  * i40e_service_task - Run the driver's async subtasks
7430  * @work: pointer to work_struct containing our data
7431  **/
7432 static void i40e_service_task(struct work_struct *work)
7433 {
7434         struct i40e_pf *pf = container_of(work,
7435                                           struct i40e_pf,
7436                                           service_task);
7437         unsigned long start_time = jiffies;
7438
7439         /* don't bother with service tasks if a reset is in progress */
7440         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7441                 return;
7442         }
7443
7444         if (test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
7445                 return;
7446
7447         i40e_detect_recover_hung(pf);
7448         i40e_sync_filters_subtask(pf);
7449         i40e_reset_subtask(pf);
7450         i40e_handle_mdd_event(pf);
7451         i40e_vc_process_vflr_event(pf);
7452         i40e_watchdog_subtask(pf);
7453         i40e_fdir_reinit_subtask(pf);
7454         if (pf->flags & I40E_FLAG_CLIENT_RESET) {
7455                 /* Client subtask will reopen next time through. */
7456                 i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], true);
7457                 pf->flags &= ~I40E_FLAG_CLIENT_RESET;
7458         } else {
7459                 i40e_client_subtask(pf);
7460                 if (pf->flags & I40E_FLAG_CLIENT_L2_CHANGE) {
7461                         i40e_notify_client_of_l2_param_changes(
7462                                                         pf->vsi[pf->lan_vsi]);
7463                         pf->flags &= ~I40E_FLAG_CLIENT_L2_CHANGE;
7464                 }
7465         }
7466         i40e_sync_filters_subtask(pf);
7467         i40e_sync_udp_filters_subtask(pf);
7468         i40e_clean_adminq_subtask(pf);
7469
7470         /* flush memory to make sure state is correct before next watchdog */
7471         smp_mb__before_atomic();
7472         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7473
7474         /* If the tasks have taken longer than one timer cycle or there
7475          * is more work to be done, reschedule the service task now
7476          * rather than wait for the timer to tick again.
7477          */
7478         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7479             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7480             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7481             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7482                 i40e_service_event_schedule(pf);
7483 }
7484
7485 /**
7486  * i40e_service_timer - timer callback
7487  * @data: pointer to PF struct
7488  **/
7489 static void i40e_service_timer(unsigned long data)
7490 {
7491         struct i40e_pf *pf = (struct i40e_pf *)data;
7492
7493         mod_timer(&pf->service_timer,
7494                   round_jiffies(jiffies + pf->service_timer_period));
7495         i40e_service_event_schedule(pf);
7496 }
7497
7498 /**
7499  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7500  * @vsi: the VSI being configured
7501  **/
7502 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7503 {
7504         struct i40e_pf *pf = vsi->back;
7505
7506         switch (vsi->type) {
7507         case I40E_VSI_MAIN:
7508                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7509                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7510                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7511                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7512                         vsi->num_q_vectors = pf->num_lan_msix;
7513                 else
7514                         vsi->num_q_vectors = 1;
7515
7516                 break;
7517
7518         case I40E_VSI_FDIR:
7519                 vsi->alloc_queue_pairs = 1;
7520                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7521                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7522                 vsi->num_q_vectors = pf->num_fdsb_msix;
7523                 break;
7524
7525         case I40E_VSI_VMDQ2:
7526                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7527                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7528                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7529                 vsi->num_q_vectors = pf->num_vmdq_msix;
7530                 break;
7531
7532         case I40E_VSI_SRIOV:
7533                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7534                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7535                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7536                 break;
7537
7538 #ifdef I40E_FCOE
7539         case I40E_VSI_FCOE:
7540                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7541                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7542                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7543                 vsi->num_q_vectors = pf->num_fcoe_msix;
7544                 break;
7545
7546 #endif /* I40E_FCOE */
7547         default:
7548                 WARN_ON(1);
7549                 return -ENODATA;
7550         }
7551
7552         return 0;
7553 }
7554
7555 /**
7556  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7557  * @type: VSI pointer
7558  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7559  *
7560  * On error: returns error code (negative)
7561  * On success: returns 0
7562  **/
7563 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7564 {
7565         int size;
7566         int ret = 0;
7567
7568         /* allocate memory for both Tx and Rx ring pointers */
7569         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7570         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7571         if (!vsi->tx_rings)
7572                 return -ENOMEM;
7573         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7574
7575         if (alloc_qvectors) {
7576                 /* allocate memory for q_vector pointers */
7577                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7578                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7579                 if (!vsi->q_vectors) {
7580                         ret = -ENOMEM;
7581                         goto err_vectors;
7582                 }
7583         }
7584         return ret;
7585
7586 err_vectors:
7587         kfree(vsi->tx_rings);
7588         return ret;
7589 }
7590
7591 /**
7592  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7593  * @pf: board private structure
7594  * @type: type of VSI
7595  *
7596  * On error: returns error code (negative)
7597  * On success: returns vsi index in PF (positive)
7598  **/
7599 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7600 {
7601         int ret = -ENODEV;
7602         struct i40e_vsi *vsi;
7603         int vsi_idx;
7604         int i;
7605
7606         /* Need to protect the allocation of the VSIs at the PF level */
7607         mutex_lock(&pf->switch_mutex);
7608
7609         /* VSI list may be fragmented if VSI creation/destruction has
7610          * been happening.  We can afford to do a quick scan to look
7611          * for any free VSIs in the list.
7612          *
7613          * find next empty vsi slot, looping back around if necessary
7614          */
7615         i = pf->next_vsi;
7616         while (i < pf->num_alloc_vsi && pf->vsi[i])
7617                 i++;
7618         if (i >= pf->num_alloc_vsi) {
7619                 i = 0;
7620                 while (i < pf->next_vsi && pf->vsi[i])
7621                         i++;
7622         }
7623
7624         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7625                 vsi_idx = i;             /* Found one! */
7626         } else {
7627                 ret = -ENODEV;
7628                 goto unlock_pf;  /* out of VSI slots! */
7629         }
7630         pf->next_vsi = ++i;
7631
7632         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7633         if (!vsi) {
7634                 ret = -ENOMEM;
7635                 goto unlock_pf;
7636         }
7637         vsi->type = type;
7638         vsi->back = pf;
7639         set_bit(__I40E_DOWN, &vsi->state);
7640         vsi->flags = 0;
7641         vsi->idx = vsi_idx;
7642         vsi->int_rate_limit = 0;
7643         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7644                                 pf->rss_table_size : 64;
7645         vsi->netdev_registered = false;
7646         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7647         hash_init(vsi->mac_filter_hash);
7648         vsi->irqs_ready = false;
7649
7650         ret = i40e_set_num_rings_in_vsi(vsi);
7651         if (ret)
7652                 goto err_rings;
7653
7654         ret = i40e_vsi_alloc_arrays(vsi, true);
7655         if (ret)
7656                 goto err_rings;
7657
7658         /* Setup default MSIX irq handler for VSI */
7659         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7660
7661         /* Initialize VSI lock */
7662         spin_lock_init(&vsi->mac_filter_hash_lock);
7663         pf->vsi[vsi_idx] = vsi;
7664         ret = vsi_idx;
7665         goto unlock_pf;
7666
7667 err_rings:
7668         pf->next_vsi = i - 1;
7669         kfree(vsi);
7670 unlock_pf:
7671         mutex_unlock(&pf->switch_mutex);
7672         return ret;
7673 }
7674
7675 /**
7676  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7677  * @type: VSI pointer
7678  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7679  *
7680  * On error: returns error code (negative)
7681  * On success: returns 0
7682  **/
7683 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7684 {
7685         /* free the ring and vector containers */
7686         if (free_qvectors) {
7687                 kfree(vsi->q_vectors);
7688                 vsi->q_vectors = NULL;
7689         }
7690         kfree(vsi->tx_rings);
7691         vsi->tx_rings = NULL;
7692         vsi->rx_rings = NULL;
7693 }
7694
7695 /**
7696  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7697  * and lookup table
7698  * @vsi: Pointer to VSI structure
7699  */
7700 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7701 {
7702         if (!vsi)
7703                 return;
7704
7705         kfree(vsi->rss_hkey_user);
7706         vsi->rss_hkey_user = NULL;
7707
7708         kfree(vsi->rss_lut_user);
7709         vsi->rss_lut_user = NULL;
7710 }
7711
7712 /**
7713  * i40e_vsi_clear - Deallocate the VSI provided
7714  * @vsi: the VSI being un-configured
7715  **/
7716 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7717 {
7718         struct i40e_pf *pf;
7719
7720         if (!vsi)
7721                 return 0;
7722
7723         if (!vsi->back)
7724                 goto free_vsi;
7725         pf = vsi->back;
7726
7727         mutex_lock(&pf->switch_mutex);
7728         if (!pf->vsi[vsi->idx]) {
7729                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7730                         vsi->idx, vsi->idx, vsi, vsi->type);
7731                 goto unlock_vsi;
7732         }
7733
7734         if (pf->vsi[vsi->idx] != vsi) {
7735                 dev_err(&pf->pdev->dev,
7736                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7737                         pf->vsi[vsi->idx]->idx,
7738                         pf->vsi[vsi->idx],
7739                         pf->vsi[vsi->idx]->type,
7740                         vsi->idx, vsi, vsi->type);
7741                 goto unlock_vsi;
7742         }
7743
7744         /* updates the PF for this cleared vsi */
7745         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7746         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7747
7748         i40e_vsi_free_arrays(vsi, true);
7749         i40e_clear_rss_config_user(vsi);
7750
7751         pf->vsi[vsi->idx] = NULL;
7752         if (vsi->idx < pf->next_vsi)
7753                 pf->next_vsi = vsi->idx;
7754
7755 unlock_vsi:
7756         mutex_unlock(&pf->switch_mutex);
7757 free_vsi:
7758         kfree(vsi);
7759
7760         return 0;
7761 }
7762
7763 /**
7764  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7765  * @vsi: the VSI being cleaned
7766  **/
7767 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7768 {
7769         int i;
7770
7771         if (vsi->tx_rings && vsi->tx_rings[0]) {
7772                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7773                         kfree_rcu(vsi->tx_rings[i], rcu);
7774                         vsi->tx_rings[i] = NULL;
7775                         vsi->rx_rings[i] = NULL;
7776                 }
7777         }
7778 }
7779
7780 /**
7781  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7782  * @vsi: the VSI being configured
7783  **/
7784 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7785 {
7786         struct i40e_ring *tx_ring, *rx_ring;
7787         struct i40e_pf *pf = vsi->back;
7788         int i;
7789
7790         /* Set basic values in the rings to be used later during open() */
7791         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7792                 /* allocate space for both Tx and Rx in one shot */
7793                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7794                 if (!tx_ring)
7795                         goto err_out;
7796
7797                 tx_ring->queue_index = i;
7798                 tx_ring->reg_idx = vsi->base_queue + i;
7799                 tx_ring->ring_active = false;
7800                 tx_ring->vsi = vsi;
7801                 tx_ring->netdev = vsi->netdev;
7802                 tx_ring->dev = &pf->pdev->dev;
7803                 tx_ring->count = vsi->num_desc;
7804                 tx_ring->size = 0;
7805                 tx_ring->dcb_tc = 0;
7806                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7807                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7808                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7809                 vsi->tx_rings[i] = tx_ring;
7810
7811                 rx_ring = &tx_ring[1];
7812                 rx_ring->queue_index = i;
7813                 rx_ring->reg_idx = vsi->base_queue + i;
7814                 rx_ring->ring_active = false;
7815                 rx_ring->vsi = vsi;
7816                 rx_ring->netdev = vsi->netdev;
7817                 rx_ring->dev = &pf->pdev->dev;
7818                 rx_ring->count = vsi->num_desc;
7819                 rx_ring->size = 0;
7820                 rx_ring->dcb_tc = 0;
7821                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7822                 vsi->rx_rings[i] = rx_ring;
7823         }
7824
7825         return 0;
7826
7827 err_out:
7828         i40e_vsi_clear_rings(vsi);
7829         return -ENOMEM;
7830 }
7831
7832 /**
7833  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7834  * @pf: board private structure
7835  * @vectors: the number of MSI-X vectors to request
7836  *
7837  * Returns the number of vectors reserved, or error
7838  **/
7839 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7840 {
7841         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7842                                         I40E_MIN_MSIX, vectors);
7843         if (vectors < 0) {
7844                 dev_info(&pf->pdev->dev,
7845                          "MSI-X vector reservation failed: %d\n", vectors);
7846                 vectors = 0;
7847         }
7848
7849         return vectors;
7850 }
7851
7852 /**
7853  * i40e_init_msix - Setup the MSIX capability
7854  * @pf: board private structure
7855  *
7856  * Work with the OS to set up the MSIX vectors needed.
7857  *
7858  * Returns the number of vectors reserved or negative on failure
7859  **/
7860 static int i40e_init_msix(struct i40e_pf *pf)
7861 {
7862         struct i40e_hw *hw = &pf->hw;
7863         int cpus, extra_vectors;
7864         int vectors_left;
7865         int v_budget, i;
7866         int v_actual;
7867         int iwarp_requested = 0;
7868
7869         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7870                 return -ENODEV;
7871
7872         /* The number of vectors we'll request will be comprised of:
7873          *   - Add 1 for "other" cause for Admin Queue events, etc.
7874          *   - The number of LAN queue pairs
7875          *      - Queues being used for RSS.
7876          *              We don't need as many as max_rss_size vectors.
7877          *              use rss_size instead in the calculation since that
7878          *              is governed by number of cpus in the system.
7879          *      - assumes symmetric Tx/Rx pairing
7880          *   - The number of VMDq pairs
7881          *   - The CPU count within the NUMA node if iWARP is enabled
7882 #ifdef I40E_FCOE
7883          *   - The number of FCOE qps.
7884 #endif
7885          * Once we count this up, try the request.
7886          *
7887          * If we can't get what we want, we'll simplify to nearly nothing
7888          * and try again.  If that still fails, we punt.
7889          */
7890         vectors_left = hw->func_caps.num_msix_vectors;
7891         v_budget = 0;
7892
7893         /* reserve one vector for miscellaneous handler */
7894         if (vectors_left) {
7895                 v_budget++;
7896                 vectors_left--;
7897         }
7898
7899         /* reserve some vectors for the main PF traffic queues. Initially we
7900          * only reserve at most 50% of the available vectors, in the case that
7901          * the number of online CPUs is large. This ensures that we can enable
7902          * extra features as well. Once we've enabled the other features, we
7903          * will use any remaining vectors to reach as close as we can to the
7904          * number of online CPUs.
7905          */
7906         cpus = num_online_cpus();
7907         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
7908         vectors_left -= pf->num_lan_msix;
7909
7910         /* reserve one vector for sideband flow director */
7911         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7912                 if (vectors_left) {
7913                         pf->num_fdsb_msix = 1;
7914                         v_budget++;
7915                         vectors_left--;
7916                 } else {
7917                         pf->num_fdsb_msix = 0;
7918                 }
7919         }
7920
7921 #ifdef I40E_FCOE
7922         /* can we reserve enough for FCoE? */
7923         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7924                 if (!vectors_left)
7925                         pf->num_fcoe_msix = 0;
7926                 else if (vectors_left >= pf->num_fcoe_qps)
7927                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7928                 else
7929                         pf->num_fcoe_msix = 1;
7930                 v_budget += pf->num_fcoe_msix;
7931                 vectors_left -= pf->num_fcoe_msix;
7932         }
7933
7934 #endif
7935         /* can we reserve enough for iWARP? */
7936         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7937                 iwarp_requested = pf->num_iwarp_msix;
7938
7939                 if (!vectors_left)
7940                         pf->num_iwarp_msix = 0;
7941                 else if (vectors_left < pf->num_iwarp_msix)
7942                         pf->num_iwarp_msix = 1;
7943                 v_budget += pf->num_iwarp_msix;
7944                 vectors_left -= pf->num_iwarp_msix;
7945         }
7946
7947         /* any vectors left over go for VMDq support */
7948         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7949                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7950                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7951
7952                 if (!vectors_left) {
7953                         pf->num_vmdq_msix = 0;
7954                         pf->num_vmdq_qps = 0;
7955                 } else {
7956                         /* if we're short on vectors for what's desired, we limit
7957                          * the queues per vmdq.  If this is still more than are
7958                          * available, the user will need to change the number of
7959                          * queues/vectors used by the PF later with the ethtool
7960                          * channels command
7961                          */
7962                         if (vmdq_vecs < vmdq_vecs_wanted)
7963                                 pf->num_vmdq_qps = 1;
7964                         pf->num_vmdq_msix = pf->num_vmdq_qps;
7965
7966                         v_budget += vmdq_vecs;
7967                         vectors_left -= vmdq_vecs;
7968                 }
7969         }
7970
7971         /* On systems with a large number of SMP cores, we previously limited
7972          * the number of vectors for num_lan_msix to be at most 50% of the
7973          * available vectors, to allow for other features. Now, we add back
7974          * the remaining vectors. However, we ensure that the total
7975          * num_lan_msix will not exceed num_online_cpus(). To do this, we
7976          * calculate the number of vectors we can add without going over the
7977          * cap of CPUs. For systems with a small number of CPUs this will be
7978          * zero.
7979          */
7980         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
7981         pf->num_lan_msix += extra_vectors;
7982         vectors_left -= extra_vectors;
7983
7984         WARN(vectors_left < 0,
7985              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
7986
7987         v_budget += pf->num_lan_msix;
7988         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7989                                    GFP_KERNEL);
7990         if (!pf->msix_entries)
7991                 return -ENOMEM;
7992
7993         for (i = 0; i < v_budget; i++)
7994                 pf->msix_entries[i].entry = i;
7995         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7996
7997         if (v_actual < I40E_MIN_MSIX) {
7998                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7999                 kfree(pf->msix_entries);
8000                 pf->msix_entries = NULL;
8001                 pci_disable_msix(pf->pdev);
8002                 return -ENODEV;
8003
8004         } else if (v_actual == I40E_MIN_MSIX) {
8005                 /* Adjust for minimal MSIX use */
8006                 pf->num_vmdq_vsis = 0;
8007                 pf->num_vmdq_qps = 0;
8008                 pf->num_lan_qps = 1;
8009                 pf->num_lan_msix = 1;
8010
8011         } else if (!vectors_left) {
8012                 /* If we have limited resources, we will start with no vectors
8013                  * for the special features and then allocate vectors to some
8014                  * of these features based on the policy and at the end disable
8015                  * the features that did not get any vectors.
8016                  */
8017                 int vec;
8018
8019                 dev_info(&pf->pdev->dev,
8020                          "MSI-X vector limit reached, attempting to redistribute vectors\n");
8021                 /* reserve the misc vector */
8022                 vec = v_actual - 1;
8023
8024                 /* Scale vector usage down */
8025                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
8026                 pf->num_vmdq_vsis = 1;
8027                 pf->num_vmdq_qps = 1;
8028 #ifdef I40E_FCOE
8029                 pf->num_fcoe_qps = 0;
8030                 pf->num_fcoe_msix = 0;
8031 #endif
8032
8033                 /* partition out the remaining vectors */
8034                 switch (vec) {
8035                 case 2:
8036                         pf->num_lan_msix = 1;
8037                         break;
8038                 case 3:
8039                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
8040                                 pf->num_lan_msix = 1;
8041                                 pf->num_iwarp_msix = 1;
8042                         } else {
8043                                 pf->num_lan_msix = 2;
8044                         }
8045 #ifdef I40E_FCOE
8046                         /* give one vector to FCoE */
8047                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8048                                 pf->num_lan_msix = 1;
8049                                 pf->num_fcoe_msix = 1;
8050                         }
8051 #endif
8052                         break;
8053                 default:
8054                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
8055                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
8056                                                  iwarp_requested);
8057                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
8058                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
8059                         } else {
8060                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
8061                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
8062                         }
8063                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8064                                 pf->num_fdsb_msix = 1;
8065                                 vec--;
8066                         }
8067                         pf->num_lan_msix = min_t(int,
8068                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
8069                                                               pf->num_lan_msix);
8070                         pf->num_lan_qps = pf->num_lan_msix;
8071 #ifdef I40E_FCOE
8072                         /* give one vector to FCoE */
8073                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8074                                 pf->num_fcoe_msix = 1;
8075                                 vec--;
8076                         }
8077 #endif
8078                         break;
8079                 }
8080         }
8081
8082         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
8083             (pf->num_fdsb_msix == 0)) {
8084                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
8085                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8086         }
8087         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8088             (pf->num_vmdq_msix == 0)) {
8089                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
8090                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
8091         }
8092
8093         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
8094             (pf->num_iwarp_msix == 0)) {
8095                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
8096                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
8097         }
8098 #ifdef I40E_FCOE
8099
8100         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
8101                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
8102                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8103         }
8104 #endif
8105         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
8106                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
8107                    pf->num_lan_msix,
8108                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
8109                    pf->num_fdsb_msix,
8110                    pf->num_iwarp_msix);
8111
8112         return v_actual;
8113 }
8114
8115 /**
8116  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
8117  * @vsi: the VSI being configured
8118  * @v_idx: index of the vector in the vsi struct
8119  * @cpu: cpu to be used on affinity_mask
8120  *
8121  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
8122  **/
8123 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
8124 {
8125         struct i40e_q_vector *q_vector;
8126
8127         /* allocate q_vector */
8128         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
8129         if (!q_vector)
8130                 return -ENOMEM;
8131
8132         q_vector->vsi = vsi;
8133         q_vector->v_idx = v_idx;
8134         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
8135
8136         if (vsi->netdev)
8137                 netif_napi_add(vsi->netdev, &q_vector->napi,
8138                                i40e_napi_poll, NAPI_POLL_WEIGHT);
8139
8140         q_vector->rx.latency_range = I40E_LOW_LATENCY;
8141         q_vector->tx.latency_range = I40E_LOW_LATENCY;
8142
8143         /* tie q_vector and vsi together */
8144         vsi->q_vectors[v_idx] = q_vector;
8145
8146         return 0;
8147 }
8148
8149 /**
8150  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
8151  * @vsi: the VSI being configured
8152  *
8153  * We allocate one q_vector per queue interrupt.  If allocation fails we
8154  * return -ENOMEM.
8155  **/
8156 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
8157 {
8158         struct i40e_pf *pf = vsi->back;
8159         int err, v_idx, num_q_vectors, current_cpu;
8160
8161         /* if not MSIX, give the one vector only to the LAN VSI */
8162         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
8163                 num_q_vectors = vsi->num_q_vectors;
8164         else if (vsi == pf->vsi[pf->lan_vsi])
8165                 num_q_vectors = 1;
8166         else
8167                 return -EINVAL;
8168
8169         current_cpu = cpumask_first(cpu_online_mask);
8170
8171         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
8172                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
8173                 if (err)
8174                         goto err_out;
8175                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
8176                 if (unlikely(current_cpu >= nr_cpu_ids))
8177                         current_cpu = cpumask_first(cpu_online_mask);
8178         }
8179
8180         return 0;
8181
8182 err_out:
8183         while (v_idx--)
8184                 i40e_free_q_vector(vsi, v_idx);
8185
8186         return err;
8187 }
8188
8189 /**
8190  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
8191  * @pf: board private structure to initialize
8192  **/
8193 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
8194 {
8195         int vectors = 0;
8196         ssize_t size;
8197
8198         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8199                 vectors = i40e_init_msix(pf);
8200                 if (vectors < 0) {
8201                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
8202                                        I40E_FLAG_IWARP_ENABLED  |
8203 #ifdef I40E_FCOE
8204                                        I40E_FLAG_FCOE_ENABLED   |
8205 #endif
8206                                        I40E_FLAG_RSS_ENABLED    |
8207                                        I40E_FLAG_DCB_CAPABLE    |
8208                                        I40E_FLAG_DCB_ENABLED    |
8209                                        I40E_FLAG_SRIOV_ENABLED  |
8210                                        I40E_FLAG_FD_SB_ENABLED  |
8211                                        I40E_FLAG_FD_ATR_ENABLED |
8212                                        I40E_FLAG_VMDQ_ENABLED);
8213
8214                         /* rework the queue expectations without MSIX */
8215                         i40e_determine_queue_usage(pf);
8216                 }
8217         }
8218
8219         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8220             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
8221                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
8222                 vectors = pci_enable_msi(pf->pdev);
8223                 if (vectors < 0) {
8224                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
8225                                  vectors);
8226                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
8227                 }
8228                 vectors = 1;  /* one MSI or Legacy vector */
8229         }
8230
8231         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
8232                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
8233
8234         /* set up vector assignment tracking */
8235         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
8236         pf->irq_pile = kzalloc(size, GFP_KERNEL);
8237         if (!pf->irq_pile) {
8238                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
8239                 return -ENOMEM;
8240         }
8241         pf->irq_pile->num_entries = vectors;
8242         pf->irq_pile->search_hint = 0;
8243
8244         /* track first vector for misc interrupts, ignore return */
8245         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
8246
8247         return 0;
8248 }
8249
8250 /**
8251  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
8252  * @pf: board private structure
8253  *
8254  * This sets up the handler for MSIX 0, which is used to manage the
8255  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
8256  * when in MSI or Legacy interrupt mode.
8257  **/
8258 static int i40e_setup_misc_vector(struct i40e_pf *pf)
8259 {
8260         struct i40e_hw *hw = &pf->hw;
8261         int err = 0;
8262
8263         /* Only request the irq if this is the first time through, and
8264          * not when we're rebuilding after a Reset
8265          */
8266         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
8267                 err = request_irq(pf->msix_entries[0].vector,
8268                                   i40e_intr, 0, pf->int_name, pf);
8269                 if (err) {
8270                         dev_info(&pf->pdev->dev,
8271                                  "request_irq for %s failed: %d\n",
8272                                  pf->int_name, err);
8273                         return -EFAULT;
8274                 }
8275         }
8276
8277         i40e_enable_misc_int_causes(pf);
8278
8279         /* associate no queues to the misc vector */
8280         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
8281         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
8282
8283         i40e_flush(hw);
8284
8285         i40e_irq_dynamic_enable_icr0(pf, true);
8286
8287         return err;
8288 }
8289
8290 /**
8291  * i40e_config_rss_aq - Prepare for RSS using AQ commands
8292  * @vsi: vsi structure
8293  * @seed: RSS hash seed
8294  **/
8295 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8296                               u8 *lut, u16 lut_size)
8297 {
8298         struct i40e_pf *pf = vsi->back;
8299         struct i40e_hw *hw = &pf->hw;
8300         int ret = 0;
8301
8302         if (seed) {
8303                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
8304                         (struct i40e_aqc_get_set_rss_key_data *)seed;
8305                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
8306                 if (ret) {
8307                         dev_info(&pf->pdev->dev,
8308                                  "Cannot set RSS key, err %s aq_err %s\n",
8309                                  i40e_stat_str(hw, ret),
8310                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8311                         return ret;
8312                 }
8313         }
8314         if (lut) {
8315                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8316
8317                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8318                 if (ret) {
8319                         dev_info(&pf->pdev->dev,
8320                                  "Cannot set RSS lut, err %s aq_err %s\n",
8321                                  i40e_stat_str(hw, ret),
8322                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8323                         return ret;
8324                 }
8325         }
8326         return ret;
8327 }
8328
8329 /**
8330  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8331  * @vsi: Pointer to vsi structure
8332  * @seed: Buffter to store the hash keys
8333  * @lut: Buffer to store the lookup table entries
8334  * @lut_size: Size of buffer to store the lookup table entries
8335  *
8336  * Return 0 on success, negative on failure
8337  */
8338 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8339                            u8 *lut, u16 lut_size)
8340 {
8341         struct i40e_pf *pf = vsi->back;
8342         struct i40e_hw *hw = &pf->hw;
8343         int ret = 0;
8344
8345         if (seed) {
8346                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8347                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8348                 if (ret) {
8349                         dev_info(&pf->pdev->dev,
8350                                  "Cannot get RSS key, err %s aq_err %s\n",
8351                                  i40e_stat_str(&pf->hw, ret),
8352                                  i40e_aq_str(&pf->hw,
8353                                              pf->hw.aq.asq_last_status));
8354                         return ret;
8355                 }
8356         }
8357
8358         if (lut) {
8359                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8360
8361                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8362                 if (ret) {
8363                         dev_info(&pf->pdev->dev,
8364                                  "Cannot get RSS lut, err %s aq_err %s\n",
8365                                  i40e_stat_str(&pf->hw, ret),
8366                                  i40e_aq_str(&pf->hw,
8367                                              pf->hw.aq.asq_last_status));
8368                         return ret;
8369                 }
8370         }
8371
8372         return ret;
8373 }
8374
8375 /**
8376  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8377  * @vsi: VSI structure
8378  **/
8379 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8380 {
8381         u8 seed[I40E_HKEY_ARRAY_SIZE];
8382         struct i40e_pf *pf = vsi->back;
8383         u8 *lut;
8384         int ret;
8385
8386         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8387                 return 0;
8388
8389         if (!vsi->rss_size)
8390                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8391                                       vsi->num_queue_pairs);
8392         if (!vsi->rss_size)
8393                 return -EINVAL;
8394
8395         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8396         if (!lut)
8397                 return -ENOMEM;
8398         /* Use the user configured hash keys and lookup table if there is one,
8399          * otherwise use default
8400          */
8401         if (vsi->rss_lut_user)
8402                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8403         else
8404                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8405         if (vsi->rss_hkey_user)
8406                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8407         else
8408                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8409         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8410         kfree(lut);
8411
8412         return ret;
8413 }
8414
8415 /**
8416  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8417  * @vsi: Pointer to vsi structure
8418  * @seed: RSS hash seed
8419  * @lut: Lookup table
8420  * @lut_size: Lookup table size
8421  *
8422  * Returns 0 on success, negative on failure
8423  **/
8424 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8425                                const u8 *lut, u16 lut_size)
8426 {
8427         struct i40e_pf *pf = vsi->back;
8428         struct i40e_hw *hw = &pf->hw;
8429         u16 vf_id = vsi->vf_id;
8430         u8 i;
8431
8432         /* Fill out hash function seed */
8433         if (seed) {
8434                 u32 *seed_dw = (u32 *)seed;
8435
8436                 if (vsi->type == I40E_VSI_MAIN) {
8437                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8438                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
8439                 } else if (vsi->type == I40E_VSI_SRIOV) {
8440                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8441                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
8442                 } else {
8443                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8444                 }
8445         }
8446
8447         if (lut) {
8448                 u32 *lut_dw = (u32 *)lut;
8449
8450                 if (vsi->type == I40E_VSI_MAIN) {
8451                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8452                                 return -EINVAL;
8453                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8454                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8455                 } else if (vsi->type == I40E_VSI_SRIOV) {
8456                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8457                                 return -EINVAL;
8458                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8459                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
8460                 } else {
8461                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8462                 }
8463         }
8464         i40e_flush(hw);
8465
8466         return 0;
8467 }
8468
8469 /**
8470  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8471  * @vsi: Pointer to VSI structure
8472  * @seed: Buffer to store the keys
8473  * @lut: Buffer to store the lookup table entries
8474  * @lut_size: Size of buffer to store the lookup table entries
8475  *
8476  * Returns 0 on success, negative on failure
8477  */
8478 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8479                             u8 *lut, u16 lut_size)
8480 {
8481         struct i40e_pf *pf = vsi->back;
8482         struct i40e_hw *hw = &pf->hw;
8483         u16 i;
8484
8485         if (seed) {
8486                 u32 *seed_dw = (u32 *)seed;
8487
8488                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8489                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8490         }
8491         if (lut) {
8492                 u32 *lut_dw = (u32 *)lut;
8493
8494                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8495                         return -EINVAL;
8496                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8497                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8498         }
8499
8500         return 0;
8501 }
8502
8503 /**
8504  * i40e_config_rss - Configure RSS keys and lut
8505  * @vsi: Pointer to VSI structure
8506  * @seed: RSS hash seed
8507  * @lut: Lookup table
8508  * @lut_size: Lookup table size
8509  *
8510  * Returns 0 on success, negative on failure
8511  */
8512 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8513 {
8514         struct i40e_pf *pf = vsi->back;
8515
8516         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8517                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8518         else
8519                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8520 }
8521
8522 /**
8523  * i40e_get_rss - Get RSS keys and lut
8524  * @vsi: Pointer to VSI structure
8525  * @seed: Buffer to store the keys
8526  * @lut: Buffer to store the lookup table entries
8527  * lut_size: Size of buffer to store the lookup table entries
8528  *
8529  * Returns 0 on success, negative on failure
8530  */
8531 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8532 {
8533         struct i40e_pf *pf = vsi->back;
8534
8535         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8536                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8537         else
8538                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8539 }
8540
8541 /**
8542  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8543  * @pf: Pointer to board private structure
8544  * @lut: Lookup table
8545  * @rss_table_size: Lookup table size
8546  * @rss_size: Range of queue number for hashing
8547  */
8548 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8549                        u16 rss_table_size, u16 rss_size)
8550 {
8551         u16 i;
8552
8553         for (i = 0; i < rss_table_size; i++)
8554                 lut[i] = i % rss_size;
8555 }
8556
8557 /**
8558  * i40e_pf_config_rss - Prepare for RSS if used
8559  * @pf: board private structure
8560  **/
8561 static int i40e_pf_config_rss(struct i40e_pf *pf)
8562 {
8563         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8564         u8 seed[I40E_HKEY_ARRAY_SIZE];
8565         u8 *lut;
8566         struct i40e_hw *hw = &pf->hw;
8567         u32 reg_val;
8568         u64 hena;
8569         int ret;
8570
8571         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8572         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8573                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8574         hena |= i40e_pf_get_default_rss_hena(pf);
8575
8576         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8577         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8578
8579         /* Determine the RSS table size based on the hardware capabilities */
8580         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8581         reg_val = (pf->rss_table_size == 512) ?
8582                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8583                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8584         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8585
8586         /* Determine the RSS size of the VSI */
8587         if (!vsi->rss_size)
8588                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8589                                       vsi->num_queue_pairs);
8590         if (!vsi->rss_size)
8591                 return -EINVAL;
8592
8593         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8594         if (!lut)
8595                 return -ENOMEM;
8596
8597         /* Use user configured lut if there is one, otherwise use default */
8598         if (vsi->rss_lut_user)
8599                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8600         else
8601                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8602
8603         /* Use user configured hash key if there is one, otherwise
8604          * use default.
8605          */
8606         if (vsi->rss_hkey_user)
8607                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8608         else
8609                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8610         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8611         kfree(lut);
8612
8613         return ret;
8614 }
8615
8616 /**
8617  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8618  * @pf: board private structure
8619  * @queue_count: the requested queue count for rss.
8620  *
8621  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8622  * count which may be different from the requested queue count.
8623  **/
8624 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8625 {
8626         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8627         int new_rss_size;
8628
8629         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8630                 return 0;
8631
8632         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8633
8634         if (queue_count != vsi->num_queue_pairs) {
8635                 vsi->req_queue_pairs = queue_count;
8636                 i40e_prep_for_reset(pf);
8637
8638                 pf->alloc_rss_size = new_rss_size;
8639
8640                 i40e_reset_and_rebuild(pf, true);
8641
8642                 /* Discard the user configured hash keys and lut, if less
8643                  * queues are enabled.
8644                  */
8645                 if (queue_count < vsi->rss_size) {
8646                         i40e_clear_rss_config_user(vsi);
8647                         dev_dbg(&pf->pdev->dev,
8648                                 "discard user configured hash keys and lut\n");
8649                 }
8650
8651                 /* Reset vsi->rss_size, as number of enabled queues changed */
8652                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8653                                       vsi->num_queue_pairs);
8654
8655                 i40e_pf_config_rss(pf);
8656         }
8657         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
8658                  vsi->req_queue_pairs, pf->rss_size_max);
8659         return pf->alloc_rss_size;
8660 }
8661
8662 /**
8663  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8664  * @pf: board private structure
8665  **/
8666 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8667 {
8668         i40e_status status;
8669         bool min_valid, max_valid;
8670         u32 max_bw, min_bw;
8671
8672         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8673                                            &min_valid, &max_valid);
8674
8675         if (!status) {
8676                 if (min_valid)
8677                         pf->npar_min_bw = min_bw;
8678                 if (max_valid)
8679                         pf->npar_max_bw = max_bw;
8680         }
8681
8682         return status;
8683 }
8684
8685 /**
8686  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8687  * @pf: board private structure
8688  **/
8689 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8690 {
8691         struct i40e_aqc_configure_partition_bw_data bw_data;
8692         i40e_status status;
8693
8694         /* Set the valid bit for this PF */
8695         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8696         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8697         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8698
8699         /* Set the new bandwidths */
8700         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8701
8702         return status;
8703 }
8704
8705 /**
8706  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8707  * @pf: board private structure
8708  **/
8709 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8710 {
8711         /* Commit temporary BW setting to permanent NVM image */
8712         enum i40e_admin_queue_err last_aq_status;
8713         i40e_status ret;
8714         u16 nvm_word;
8715
8716         if (pf->hw.partition_id != 1) {
8717                 dev_info(&pf->pdev->dev,
8718                          "Commit BW only works on partition 1! This is partition %d",
8719                          pf->hw.partition_id);
8720                 ret = I40E_NOT_SUPPORTED;
8721                 goto bw_commit_out;
8722         }
8723
8724         /* Acquire NVM for read access */
8725         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8726         last_aq_status = pf->hw.aq.asq_last_status;
8727         if (ret) {
8728                 dev_info(&pf->pdev->dev,
8729                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8730                          i40e_stat_str(&pf->hw, ret),
8731                          i40e_aq_str(&pf->hw, last_aq_status));
8732                 goto bw_commit_out;
8733         }
8734
8735         /* Read word 0x10 of NVM - SW compatibility word 1 */
8736         ret = i40e_aq_read_nvm(&pf->hw,
8737                                I40E_SR_NVM_CONTROL_WORD,
8738                                0x10, sizeof(nvm_word), &nvm_word,
8739                                false, NULL);
8740         /* Save off last admin queue command status before releasing
8741          * the NVM
8742          */
8743         last_aq_status = pf->hw.aq.asq_last_status;
8744         i40e_release_nvm(&pf->hw);
8745         if (ret) {
8746                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8747                          i40e_stat_str(&pf->hw, ret),
8748                          i40e_aq_str(&pf->hw, last_aq_status));
8749                 goto bw_commit_out;
8750         }
8751
8752         /* Wait a bit for NVM release to complete */
8753         msleep(50);
8754
8755         /* Acquire NVM for write access */
8756         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8757         last_aq_status = pf->hw.aq.asq_last_status;
8758         if (ret) {
8759                 dev_info(&pf->pdev->dev,
8760                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8761                          i40e_stat_str(&pf->hw, ret),
8762                          i40e_aq_str(&pf->hw, last_aq_status));
8763                 goto bw_commit_out;
8764         }
8765         /* Write it back out unchanged to initiate update NVM,
8766          * which will force a write of the shadow (alt) RAM to
8767          * the NVM - thus storing the bandwidth values permanently.
8768          */
8769         ret = i40e_aq_update_nvm(&pf->hw,
8770                                  I40E_SR_NVM_CONTROL_WORD,
8771                                  0x10, sizeof(nvm_word),
8772                                  &nvm_word, true, NULL);
8773         /* Save off last admin queue command status before releasing
8774          * the NVM
8775          */
8776         last_aq_status = pf->hw.aq.asq_last_status;
8777         i40e_release_nvm(&pf->hw);
8778         if (ret)
8779                 dev_info(&pf->pdev->dev,
8780                          "BW settings NOT SAVED, err %s aq_err %s\n",
8781                          i40e_stat_str(&pf->hw, ret),
8782                          i40e_aq_str(&pf->hw, last_aq_status));
8783 bw_commit_out:
8784
8785         return ret;
8786 }
8787
8788 /**
8789  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8790  * @pf: board private structure to initialize
8791  *
8792  * i40e_sw_init initializes the Adapter private data structure.
8793  * Fields are initialized based on PCI device information and
8794  * OS network device settings (MTU size).
8795  **/
8796 static int i40e_sw_init(struct i40e_pf *pf)
8797 {
8798         int err = 0;
8799         int size;
8800
8801         /* Set default capability flags */
8802         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8803                     I40E_FLAG_MSI_ENABLED     |
8804                     I40E_FLAG_MSIX_ENABLED;
8805
8806         /* Set default ITR */
8807         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8808         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8809
8810         /* Depending on PF configurations, it is possible that the RSS
8811          * maximum might end up larger than the available queues
8812          */
8813         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8814         pf->alloc_rss_size = 1;
8815         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8816         pf->rss_size_max = min_t(int, pf->rss_size_max,
8817                                  pf->hw.func_caps.num_tx_qp);
8818         if (pf->hw.func_caps.rss) {
8819                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8820                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8821                                            num_online_cpus());
8822         }
8823
8824         /* MFP mode enabled */
8825         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8826                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8827                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8828                 if (i40e_get_npar_bw_setting(pf))
8829                         dev_warn(&pf->pdev->dev,
8830                                  "Could not get NPAR bw settings\n");
8831                 else
8832                         dev_info(&pf->pdev->dev,
8833                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8834                                  pf->npar_min_bw, pf->npar_max_bw);
8835         }
8836
8837         /* FW/NVM is not yet fixed in this regard */
8838         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8839             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8840                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8841                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8842                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8843                     pf->hw.num_partitions > 1)
8844                         dev_info(&pf->pdev->dev,
8845                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8846                 else
8847                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8848                 pf->fdir_pf_filter_count =
8849                                  pf->hw.func_caps.fd_filters_guaranteed;
8850                 pf->hw.fdir_shared_filter_count =
8851                                  pf->hw.func_caps.fd_filters_best_effort;
8852         }
8853
8854         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8855             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8856             (pf->hw.aq.fw_maj_ver < 4))) {
8857                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8858                 /* No DCB support  for FW < v4.33 */
8859                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8860         }
8861
8862         /* Disable FW LLDP if FW < v4.3 */
8863         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8864             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8865             (pf->hw.aq.fw_maj_ver < 4)))
8866                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8867
8868         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8869         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8870             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8871             (pf->hw.aq.fw_maj_ver >= 5)))
8872                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8873
8874         if (pf->hw.func_caps.vmdq) {
8875                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8876                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8877                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8878         }
8879
8880         if (pf->hw.func_caps.iwarp) {
8881                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8882                 /* IWARP needs one extra vector for CQP just like MISC.*/
8883                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8884         }
8885
8886 #ifdef I40E_FCOE
8887         i40e_init_pf_fcoe(pf);
8888
8889 #endif /* I40E_FCOE */
8890 #ifdef CONFIG_PCI_IOV
8891         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8892                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8893                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8894                 pf->num_req_vfs = min_t(int,
8895                                         pf->hw.func_caps.num_vfs,
8896                                         I40E_MAX_VF_COUNT);
8897         }
8898 #endif /* CONFIG_PCI_IOV */
8899         if (pf->hw.mac.type == I40E_MAC_X722) {
8900                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE
8901                              | I40E_FLAG_128_QP_RSS_CAPABLE
8902                              | I40E_FLAG_HW_ATR_EVICT_CAPABLE
8903                              | I40E_FLAG_OUTER_UDP_CSUM_CAPABLE
8904                              | I40E_FLAG_WB_ON_ITR_CAPABLE
8905                              | I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE
8906                              | I40E_FLAG_NO_PCI_LINK_CHECK
8907                              | I40E_FLAG_USE_SET_LLDP_MIB
8908                              | I40E_FLAG_GENEVE_OFFLOAD_CAPABLE
8909                              | I40E_FLAG_PTP_L4_CAPABLE
8910                              | I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE;
8911         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8912                    ((pf->hw.aq.api_maj_ver == 1) &&
8913                     (pf->hw.aq.api_min_ver > 4))) {
8914                 /* Supported in FW API version higher than 1.4 */
8915                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8916                 pf->hw_disabled_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8917         } else {
8918                 pf->hw_disabled_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8919         }
8920
8921         pf->eeprom_version = 0xDEAD;
8922         pf->lan_veb = I40E_NO_VEB;
8923         pf->lan_vsi = I40E_NO_VSI;
8924
8925         /* By default FW has this off for performance reasons */
8926         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8927
8928         /* set up queue assignment tracking */
8929         size = sizeof(struct i40e_lump_tracking)
8930                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8931         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8932         if (!pf->qp_pile) {
8933                 err = -ENOMEM;
8934                 goto sw_init_done;
8935         }
8936         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8937         pf->qp_pile->search_hint = 0;
8938
8939         pf->tx_timeout_recovery_level = 1;
8940
8941         mutex_init(&pf->switch_mutex);
8942
8943         /* If NPAR is enabled nudge the Tx scheduler */
8944         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8945                 i40e_set_npar_bw_setting(pf);
8946
8947 sw_init_done:
8948         return err;
8949 }
8950
8951 /**
8952  * i40e_set_ntuple - set the ntuple feature flag and take action
8953  * @pf: board private structure to initialize
8954  * @features: the feature set that the stack is suggesting
8955  *
8956  * returns a bool to indicate if reset needs to happen
8957  **/
8958 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8959 {
8960         bool need_reset = false;
8961
8962         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8963          * the state changed, we need to reset.
8964          */
8965         if (features & NETIF_F_NTUPLE) {
8966                 /* Enable filters and mark for reset */
8967                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8968                         need_reset = true;
8969                 /* enable FD_SB only if there is MSI-X vector */
8970                 if (pf->num_fdsb_msix > 0)
8971                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8972         } else {
8973                 /* turn off filters, mark for reset and clear SW filter list */
8974                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8975                         need_reset = true;
8976                         i40e_fdir_filter_exit(pf);
8977                 }
8978                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8979                 pf->hw_disabled_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8980                 /* reset fd counters */
8981                 pf->fd_add_err = 0;
8982                 pf->fd_atr_cnt = 0;
8983                 /* if ATR was auto disabled it can be re-enabled. */
8984                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8985                     (pf->hw_disabled_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8986                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8987                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8988                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8989                 }
8990         }
8991         return need_reset;
8992 }
8993
8994 /**
8995  * i40e_clear_rss_lut - clear the rx hash lookup table
8996  * @vsi: the VSI being configured
8997  **/
8998 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8999 {
9000         struct i40e_pf *pf = vsi->back;
9001         struct i40e_hw *hw = &pf->hw;
9002         u16 vf_id = vsi->vf_id;
9003         u8 i;
9004
9005         if (vsi->type == I40E_VSI_MAIN) {
9006                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
9007                         wr32(hw, I40E_PFQF_HLUT(i), 0);
9008         } else if (vsi->type == I40E_VSI_SRIOV) {
9009                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
9010                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
9011         } else {
9012                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
9013         }
9014 }
9015
9016 /**
9017  * i40e_set_features - set the netdev feature flags
9018  * @netdev: ptr to the netdev being adjusted
9019  * @features: the feature set that the stack is suggesting
9020  **/
9021 static int i40e_set_features(struct net_device *netdev,
9022                              netdev_features_t features)
9023 {
9024         struct i40e_netdev_priv *np = netdev_priv(netdev);
9025         struct i40e_vsi *vsi = np->vsi;
9026         struct i40e_pf *pf = vsi->back;
9027         bool need_reset;
9028
9029         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
9030                 i40e_pf_config_rss(pf);
9031         else if (!(features & NETIF_F_RXHASH) &&
9032                  netdev->features & NETIF_F_RXHASH)
9033                 i40e_clear_rss_lut(vsi);
9034
9035         if (features & NETIF_F_HW_VLAN_CTAG_RX)
9036                 i40e_vlan_stripping_enable(vsi);
9037         else
9038                 i40e_vlan_stripping_disable(vsi);
9039
9040         need_reset = i40e_set_ntuple(pf, features);
9041
9042         if (need_reset)
9043                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
9044
9045         return 0;
9046 }
9047
9048 /**
9049  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
9050  * @pf: board private structure
9051  * @port: The UDP port to look up
9052  *
9053  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
9054  **/
9055 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, u16 port)
9056 {
9057         u8 i;
9058
9059         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
9060                 if (pf->udp_ports[i].index == port)
9061                         return i;
9062         }
9063
9064         return i;
9065 }
9066
9067 /**
9068  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
9069  * @netdev: This physical port's netdev
9070  * @ti: Tunnel endpoint information
9071  **/
9072 static void i40e_udp_tunnel_add(struct net_device *netdev,
9073                                 struct udp_tunnel_info *ti)
9074 {
9075         struct i40e_netdev_priv *np = netdev_priv(netdev);
9076         struct i40e_vsi *vsi = np->vsi;
9077         struct i40e_pf *pf = vsi->back;
9078         u16 port = ntohs(ti->port);
9079         u8 next_idx;
9080         u8 idx;
9081
9082         idx = i40e_get_udp_port_idx(pf, port);
9083
9084         /* Check if port already exists */
9085         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
9086                 netdev_info(netdev, "port %d already offloaded\n", port);
9087                 return;
9088         }
9089
9090         /* Now check if there is space to add the new port */
9091         next_idx = i40e_get_udp_port_idx(pf, 0);
9092
9093         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
9094                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
9095                             port);
9096                 return;
9097         }
9098
9099         switch (ti->type) {
9100         case UDP_TUNNEL_TYPE_VXLAN:
9101                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
9102                 break;
9103         case UDP_TUNNEL_TYPE_GENEVE:
9104                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
9105                         return;
9106                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
9107                 break;
9108         default:
9109                 return;
9110         }
9111
9112         /* New port: add it and mark its index in the bitmap */
9113         pf->udp_ports[next_idx].index = port;
9114         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
9115         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
9116 }
9117
9118 /**
9119  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
9120  * @netdev: This physical port's netdev
9121  * @ti: Tunnel endpoint information
9122  **/
9123 static void i40e_udp_tunnel_del(struct net_device *netdev,
9124                                 struct udp_tunnel_info *ti)
9125 {
9126         struct i40e_netdev_priv *np = netdev_priv(netdev);
9127         struct i40e_vsi *vsi = np->vsi;
9128         struct i40e_pf *pf = vsi->back;
9129         u16 port = ntohs(ti->port);
9130         u8 idx;
9131
9132         idx = i40e_get_udp_port_idx(pf, port);
9133
9134         /* Check if port already exists */
9135         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
9136                 goto not_found;
9137
9138         switch (ti->type) {
9139         case UDP_TUNNEL_TYPE_VXLAN:
9140                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
9141                         goto not_found;
9142                 break;
9143         case UDP_TUNNEL_TYPE_GENEVE:
9144                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
9145                         goto not_found;
9146                 break;
9147         default:
9148                 goto not_found;
9149         }
9150
9151         /* if port exists, set it to 0 (mark for deletion)
9152          * and make it pending
9153          */
9154         pf->udp_ports[idx].index = 0;
9155         pf->pending_udp_bitmap |= BIT_ULL(idx);
9156         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
9157
9158         return;
9159 not_found:
9160         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
9161                     port);
9162 }
9163
9164 static int i40e_get_phys_port_id(struct net_device *netdev,
9165                                  struct netdev_phys_item_id *ppid)
9166 {
9167         struct i40e_netdev_priv *np = netdev_priv(netdev);
9168         struct i40e_pf *pf = np->vsi->back;
9169         struct i40e_hw *hw = &pf->hw;
9170
9171         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
9172                 return -EOPNOTSUPP;
9173
9174         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
9175         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
9176
9177         return 0;
9178 }
9179
9180 /**
9181  * i40e_ndo_fdb_add - add an entry to the hardware database
9182  * @ndm: the input from the stack
9183  * @tb: pointer to array of nladdr (unused)
9184  * @dev: the net device pointer
9185  * @addr: the MAC address entry being added
9186  * @flags: instructions from stack about fdb operation
9187  */
9188 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
9189                             struct net_device *dev,
9190                             const unsigned char *addr, u16 vid,
9191                             u16 flags)
9192 {
9193         struct i40e_netdev_priv *np = netdev_priv(dev);
9194         struct i40e_pf *pf = np->vsi->back;
9195         int err = 0;
9196
9197         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
9198                 return -EOPNOTSUPP;
9199
9200         if (vid) {
9201                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
9202                 return -EINVAL;
9203         }
9204
9205         /* Hardware does not support aging addresses so if a
9206          * ndm_state is given only allow permanent addresses
9207          */
9208         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
9209                 netdev_info(dev, "FDB only supports static addresses\n");
9210                 return -EINVAL;
9211         }
9212
9213         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
9214                 err = dev_uc_add_excl(dev, addr);
9215         else if (is_multicast_ether_addr(addr))
9216                 err = dev_mc_add_excl(dev, addr);
9217         else
9218                 err = -EINVAL;
9219
9220         /* Only return duplicate errors if NLM_F_EXCL is set */
9221         if (err == -EEXIST && !(flags & NLM_F_EXCL))
9222                 err = 0;
9223
9224         return err;
9225 }
9226
9227 /**
9228  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
9229  * @dev: the netdev being configured
9230  * @nlh: RTNL message
9231  *
9232  * Inserts a new hardware bridge if not already created and
9233  * enables the bridging mode requested (VEB or VEPA). If the
9234  * hardware bridge has already been inserted and the request
9235  * is to change the mode then that requires a PF reset to
9236  * allow rebuild of the components with required hardware
9237  * bridge mode enabled.
9238  **/
9239 static int i40e_ndo_bridge_setlink(struct net_device *dev,
9240                                    struct nlmsghdr *nlh,
9241                                    u16 flags)
9242 {
9243         struct i40e_netdev_priv *np = netdev_priv(dev);
9244         struct i40e_vsi *vsi = np->vsi;
9245         struct i40e_pf *pf = vsi->back;
9246         struct i40e_veb *veb = NULL;
9247         struct nlattr *attr, *br_spec;
9248         int i, rem;
9249
9250         /* Only for PF VSI for now */
9251         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9252                 return -EOPNOTSUPP;
9253
9254         /* Find the HW bridge for PF VSI */
9255         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9256                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9257                         veb = pf->veb[i];
9258         }
9259
9260         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
9261
9262         nla_for_each_nested(attr, br_spec, rem) {
9263                 __u16 mode;
9264
9265                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
9266                         continue;
9267
9268                 mode = nla_get_u16(attr);
9269                 if ((mode != BRIDGE_MODE_VEPA) &&
9270                     (mode != BRIDGE_MODE_VEB))
9271                         return -EINVAL;
9272
9273                 /* Insert a new HW bridge */
9274                 if (!veb) {
9275                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9276                                              vsi->tc_config.enabled_tc);
9277                         if (veb) {
9278                                 veb->bridge_mode = mode;
9279                                 i40e_config_bridge_mode(veb);
9280                         } else {
9281                                 /* No Bridge HW offload available */
9282                                 return -ENOENT;
9283                         }
9284                         break;
9285                 } else if (mode != veb->bridge_mode) {
9286                         /* Existing HW bridge but different mode needs reset */
9287                         veb->bridge_mode = mode;
9288                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
9289                         if (mode == BRIDGE_MODE_VEB)
9290                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
9291                         else
9292                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9293                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
9294                         break;
9295                 }
9296         }
9297
9298         return 0;
9299 }
9300
9301 /**
9302  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9303  * @skb: skb buff
9304  * @pid: process id
9305  * @seq: RTNL message seq #
9306  * @dev: the netdev being configured
9307  * @filter_mask: unused
9308  * @nlflags: netlink flags passed in
9309  *
9310  * Return the mode in which the hardware bridge is operating in
9311  * i.e VEB or VEPA.
9312  **/
9313 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9314                                    struct net_device *dev,
9315                                    u32 __always_unused filter_mask,
9316                                    int nlflags)
9317 {
9318         struct i40e_netdev_priv *np = netdev_priv(dev);
9319         struct i40e_vsi *vsi = np->vsi;
9320         struct i40e_pf *pf = vsi->back;
9321         struct i40e_veb *veb = NULL;
9322         int i;
9323
9324         /* Only for PF VSI for now */
9325         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9326                 return -EOPNOTSUPP;
9327
9328         /* Find the HW bridge for the PF VSI */
9329         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9330                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9331                         veb = pf->veb[i];
9332         }
9333
9334         if (!veb)
9335                 return 0;
9336
9337         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9338                                        0, 0, nlflags, filter_mask, NULL);
9339 }
9340
9341 /**
9342  * i40e_features_check - Validate encapsulated packet conforms to limits
9343  * @skb: skb buff
9344  * @dev: This physical port's netdev
9345  * @features: Offload features that the stack believes apply
9346  **/
9347 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9348                                              struct net_device *dev,
9349                                              netdev_features_t features)
9350 {
9351         size_t len;
9352
9353         /* No point in doing any of this if neither checksum nor GSO are
9354          * being requested for this frame.  We can rule out both by just
9355          * checking for CHECKSUM_PARTIAL
9356          */
9357         if (skb->ip_summed != CHECKSUM_PARTIAL)
9358                 return features;
9359
9360         /* We cannot support GSO if the MSS is going to be less than
9361          * 64 bytes.  If it is then we need to drop support for GSO.
9362          */
9363         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
9364                 features &= ~NETIF_F_GSO_MASK;
9365
9366         /* MACLEN can support at most 63 words */
9367         len = skb_network_header(skb) - skb->data;
9368         if (len & ~(63 * 2))
9369                 goto out_err;
9370
9371         /* IPLEN and EIPLEN can support at most 127 dwords */
9372         len = skb_transport_header(skb) - skb_network_header(skb);
9373         if (len & ~(127 * 4))
9374                 goto out_err;
9375
9376         if (skb->encapsulation) {
9377                 /* L4TUNLEN can support 127 words */
9378                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
9379                 if (len & ~(127 * 2))
9380                         goto out_err;
9381
9382                 /* IPLEN can support at most 127 dwords */
9383                 len = skb_inner_transport_header(skb) -
9384                       skb_inner_network_header(skb);
9385                 if (len & ~(127 * 4))
9386                         goto out_err;
9387         }
9388
9389         /* No need to validate L4LEN as TCP is the only protocol with a
9390          * a flexible value and we support all possible values supported
9391          * by TCP, which is at most 15 dwords
9392          */
9393
9394         return features;
9395 out_err:
9396         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9397 }
9398
9399 static const struct net_device_ops i40e_netdev_ops = {
9400         .ndo_open               = i40e_open,
9401         .ndo_stop               = i40e_close,
9402         .ndo_start_xmit         = i40e_lan_xmit_frame,
9403         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9404         .ndo_set_rx_mode        = i40e_set_rx_mode,
9405         .ndo_validate_addr      = eth_validate_addr,
9406         .ndo_set_mac_address    = i40e_set_mac,
9407         .ndo_change_mtu         = i40e_change_mtu,
9408         .ndo_do_ioctl           = i40e_ioctl,
9409         .ndo_tx_timeout         = i40e_tx_timeout,
9410         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9411         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9412 #ifdef CONFIG_NET_POLL_CONTROLLER
9413         .ndo_poll_controller    = i40e_netpoll,
9414 #endif
9415         .ndo_setup_tc           = __i40e_setup_tc,
9416 #ifdef I40E_FCOE
9417         .ndo_fcoe_enable        = i40e_fcoe_enable,
9418         .ndo_fcoe_disable       = i40e_fcoe_disable,
9419 #endif
9420         .ndo_set_features       = i40e_set_features,
9421         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9422         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9423         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9424         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9425         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9426         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9427         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9428         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9429         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9430         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9431         .ndo_fdb_add            = i40e_ndo_fdb_add,
9432         .ndo_features_check     = i40e_features_check,
9433         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9434         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9435 };
9436
9437 /**
9438  * i40e_config_netdev - Setup the netdev flags
9439  * @vsi: the VSI being configured
9440  *
9441  * Returns 0 on success, negative value on failure
9442  **/
9443 static int i40e_config_netdev(struct i40e_vsi *vsi)
9444 {
9445         struct i40e_pf *pf = vsi->back;
9446         struct i40e_hw *hw = &pf->hw;
9447         struct i40e_netdev_priv *np;
9448         struct net_device *netdev;
9449         u8 broadcast[ETH_ALEN];
9450         u8 mac_addr[ETH_ALEN];
9451         int etherdev_size;
9452
9453         etherdev_size = sizeof(struct i40e_netdev_priv);
9454         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9455         if (!netdev)
9456                 return -ENOMEM;
9457
9458         vsi->netdev = netdev;
9459         np = netdev_priv(netdev);
9460         np->vsi = vsi;
9461
9462         netdev->hw_enc_features |= NETIF_F_SG                   |
9463                                    NETIF_F_IP_CSUM              |
9464                                    NETIF_F_IPV6_CSUM            |
9465                                    NETIF_F_HIGHDMA              |
9466                                    NETIF_F_SOFT_FEATURES        |
9467                                    NETIF_F_TSO                  |
9468                                    NETIF_F_TSO_ECN              |
9469                                    NETIF_F_TSO6                 |
9470                                    NETIF_F_GSO_GRE              |
9471                                    NETIF_F_GSO_GRE_CSUM         |
9472                                    NETIF_F_GSO_IPXIP4           |
9473                                    NETIF_F_GSO_IPXIP6           |
9474                                    NETIF_F_GSO_UDP_TUNNEL       |
9475                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9476                                    NETIF_F_GSO_PARTIAL          |
9477                                    NETIF_F_SCTP_CRC             |
9478                                    NETIF_F_RXHASH               |
9479                                    NETIF_F_RXCSUM               |
9480                                    0;
9481
9482         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9483                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9484
9485         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9486
9487         /* record features VLANs can make use of */
9488         netdev->vlan_features |= netdev->hw_enc_features |
9489                                  NETIF_F_TSO_MANGLEID;
9490
9491         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9492                 netdev->hw_features |= NETIF_F_NTUPLE;
9493
9494         netdev->hw_features |= netdev->hw_enc_features  |
9495                                NETIF_F_HW_VLAN_CTAG_TX  |
9496                                NETIF_F_HW_VLAN_CTAG_RX;
9497
9498         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9499         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9500
9501         if (vsi->type == I40E_VSI_MAIN) {
9502                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9503                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9504                 /* The following steps are necessary to properly keep track of
9505                  * MAC-VLAN filters loaded into firmware - first we remove
9506                  * filter that is automatically generated by firmware and then
9507                  * add new filter both to the driver hash table and firmware.
9508                  */
9509                 i40e_rm_default_mac_filter(vsi, mac_addr);
9510                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9511                 i40e_add_mac_filter(vsi, mac_addr);
9512                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9513         } else {
9514                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9515                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9516                          pf->vsi[pf->lan_vsi]->netdev->name);
9517                 random_ether_addr(mac_addr);
9518
9519                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9520                 i40e_add_mac_filter(vsi, mac_addr);
9521                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9522         }
9523
9524         /* Add the broadcast filter so that we initially will receive
9525          * broadcast packets. Note that when a new VLAN is first added the
9526          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
9527          * specific filters as part of transitioning into "vlan" operation.
9528          * When more VLANs are added, the driver will copy each existing MAC
9529          * filter and add it for the new VLAN.
9530          *
9531          * Broadcast filters are handled specially by
9532          * i40e_sync_filters_subtask, as the driver must to set the broadcast
9533          * promiscuous bit instead of adding this directly as a MAC/VLAN
9534          * filter. The subtask will update the correct broadcast promiscuous
9535          * bits as VLANs become active or inactive.
9536          */
9537         eth_broadcast_addr(broadcast);
9538         spin_lock_bh(&vsi->mac_filter_hash_lock);
9539         i40e_add_mac_filter(vsi, broadcast);
9540         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9541
9542         ether_addr_copy(netdev->dev_addr, mac_addr);
9543         ether_addr_copy(netdev->perm_addr, mac_addr);
9544
9545         netdev->priv_flags |= IFF_UNICAST_FLT;
9546         netdev->priv_flags |= IFF_SUPP_NOFCS;
9547         /* Setup netdev TC information */
9548         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9549
9550         netdev->netdev_ops = &i40e_netdev_ops;
9551         netdev->watchdog_timeo = 5 * HZ;
9552         i40e_set_ethtool_ops(netdev);
9553 #ifdef I40E_FCOE
9554         i40e_fcoe_config_netdev(netdev, vsi);
9555 #endif
9556
9557         /* MTU range: 68 - 9706 */
9558         netdev->min_mtu = ETH_MIN_MTU;
9559         netdev->max_mtu = I40E_MAX_RXBUFFER -
9560                           (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
9561
9562         return 0;
9563 }
9564
9565 /**
9566  * i40e_vsi_delete - Delete a VSI from the switch
9567  * @vsi: the VSI being removed
9568  *
9569  * Returns 0 on success, negative value on failure
9570  **/
9571 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9572 {
9573         /* remove default VSI is not allowed */
9574         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9575                 return;
9576
9577         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9578 }
9579
9580 /**
9581  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9582  * @vsi: the VSI being queried
9583  *
9584  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9585  **/
9586 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9587 {
9588         struct i40e_veb *veb;
9589         struct i40e_pf *pf = vsi->back;
9590
9591         /* Uplink is not a bridge so default to VEB */
9592         if (vsi->veb_idx == I40E_NO_VEB)
9593                 return 1;
9594
9595         veb = pf->veb[vsi->veb_idx];
9596         if (!veb) {
9597                 dev_info(&pf->pdev->dev,
9598                          "There is no veb associated with the bridge\n");
9599                 return -ENOENT;
9600         }
9601
9602         /* Uplink is a bridge in VEPA mode */
9603         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9604                 return 0;
9605         } else {
9606                 /* Uplink is a bridge in VEB mode */
9607                 return 1;
9608         }
9609
9610         /* VEPA is now default bridge, so return 0 */
9611         return 0;
9612 }
9613
9614 /**
9615  * i40e_add_vsi - Add a VSI to the switch
9616  * @vsi: the VSI being configured
9617  *
9618  * This initializes a VSI context depending on the VSI type to be added and
9619  * passes it down to the add_vsi aq command.
9620  **/
9621 static int i40e_add_vsi(struct i40e_vsi *vsi)
9622 {
9623         int ret = -ENODEV;
9624         struct i40e_pf *pf = vsi->back;
9625         struct i40e_hw *hw = &pf->hw;
9626         struct i40e_vsi_context ctxt;
9627         struct i40e_mac_filter *f;
9628         struct hlist_node *h;
9629         int bkt;
9630
9631         u8 enabled_tc = 0x1; /* TC0 enabled */
9632         int f_count = 0;
9633
9634         memset(&ctxt, 0, sizeof(ctxt));
9635         switch (vsi->type) {
9636         case I40E_VSI_MAIN:
9637                 /* The PF's main VSI is already setup as part of the
9638                  * device initialization, so we'll not bother with
9639                  * the add_vsi call, but we will retrieve the current
9640                  * VSI context.
9641                  */
9642                 ctxt.seid = pf->main_vsi_seid;
9643                 ctxt.pf_num = pf->hw.pf_id;
9644                 ctxt.vf_num = 0;
9645                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9646                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9647                 if (ret) {
9648                         dev_info(&pf->pdev->dev,
9649                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9650                                  i40e_stat_str(&pf->hw, ret),
9651                                  i40e_aq_str(&pf->hw,
9652                                              pf->hw.aq.asq_last_status));
9653                         return -ENOENT;
9654                 }
9655                 vsi->info = ctxt.info;
9656                 vsi->info.valid_sections = 0;
9657
9658                 vsi->seid = ctxt.seid;
9659                 vsi->id = ctxt.vsi_number;
9660
9661                 enabled_tc = i40e_pf_get_tc_map(pf);
9662
9663                 /* MFP mode setup queue map and update VSI */
9664                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9665                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9666                         memset(&ctxt, 0, sizeof(ctxt));
9667                         ctxt.seid = pf->main_vsi_seid;
9668                         ctxt.pf_num = pf->hw.pf_id;
9669                         ctxt.vf_num = 0;
9670                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9671                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9672                         if (ret) {
9673                                 dev_info(&pf->pdev->dev,
9674                                          "update vsi failed, err %s aq_err %s\n",
9675                                          i40e_stat_str(&pf->hw, ret),
9676                                          i40e_aq_str(&pf->hw,
9677                                                     pf->hw.aq.asq_last_status));
9678                                 ret = -ENOENT;
9679                                 goto err;
9680                         }
9681                         /* update the local VSI info queue map */
9682                         i40e_vsi_update_queue_map(vsi, &ctxt);
9683                         vsi->info.valid_sections = 0;
9684                 } else {
9685                         /* Default/Main VSI is only enabled for TC0
9686                          * reconfigure it to enable all TCs that are
9687                          * available on the port in SFP mode.
9688                          * For MFP case the iSCSI PF would use this
9689                          * flow to enable LAN+iSCSI TC.
9690                          */
9691                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9692                         if (ret) {
9693                                 dev_info(&pf->pdev->dev,
9694                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9695                                          enabled_tc,
9696                                          i40e_stat_str(&pf->hw, ret),
9697                                          i40e_aq_str(&pf->hw,
9698                                                     pf->hw.aq.asq_last_status));
9699                                 ret = -ENOENT;
9700                         }
9701                 }
9702                 break;
9703
9704         case I40E_VSI_FDIR:
9705                 ctxt.pf_num = hw->pf_id;
9706                 ctxt.vf_num = 0;
9707                 ctxt.uplink_seid = vsi->uplink_seid;
9708                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9709                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9710                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9711                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9712                         ctxt.info.valid_sections |=
9713                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9714                         ctxt.info.switch_id =
9715                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9716                 }
9717                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9718                 break;
9719
9720         case I40E_VSI_VMDQ2:
9721                 ctxt.pf_num = hw->pf_id;
9722                 ctxt.vf_num = 0;
9723                 ctxt.uplink_seid = vsi->uplink_seid;
9724                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9725                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9726
9727                 /* This VSI is connected to VEB so the switch_id
9728                  * should be set to zero by default.
9729                  */
9730                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9731                         ctxt.info.valid_sections |=
9732                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9733                         ctxt.info.switch_id =
9734                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9735                 }
9736
9737                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9738                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9739                 break;
9740
9741         case I40E_VSI_SRIOV:
9742                 ctxt.pf_num = hw->pf_id;
9743                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9744                 ctxt.uplink_seid = vsi->uplink_seid;
9745                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9746                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9747
9748                 /* This VSI is connected to VEB so the switch_id
9749                  * should be set to zero by default.
9750                  */
9751                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9752                         ctxt.info.valid_sections |=
9753                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9754                         ctxt.info.switch_id =
9755                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9756                 }
9757
9758                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9759                         ctxt.info.valid_sections |=
9760                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9761                         ctxt.info.queueing_opt_flags |=
9762                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9763                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9764                 }
9765
9766                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9767                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9768                 if (pf->vf[vsi->vf_id].spoofchk) {
9769                         ctxt.info.valid_sections |=
9770                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9771                         ctxt.info.sec_flags |=
9772                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9773                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9774                 }
9775                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9776                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9777                 break;
9778
9779 #ifdef I40E_FCOE
9780         case I40E_VSI_FCOE:
9781                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9782                 if (ret) {
9783                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9784                         return ret;
9785                 }
9786                 break;
9787
9788 #endif /* I40E_FCOE */
9789         case I40E_VSI_IWARP:
9790                 /* send down message to iWARP */
9791                 break;
9792
9793         default:
9794                 return -ENODEV;
9795         }
9796
9797         if (vsi->type != I40E_VSI_MAIN) {
9798                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9799                 if (ret) {
9800                         dev_info(&vsi->back->pdev->dev,
9801                                  "add vsi failed, err %s aq_err %s\n",
9802                                  i40e_stat_str(&pf->hw, ret),
9803                                  i40e_aq_str(&pf->hw,
9804                                              pf->hw.aq.asq_last_status));
9805                         ret = -ENOENT;
9806                         goto err;
9807                 }
9808                 vsi->info = ctxt.info;
9809                 vsi->info.valid_sections = 0;
9810                 vsi->seid = ctxt.seid;
9811                 vsi->id = ctxt.vsi_number;
9812         }
9813
9814         vsi->active_filters = 0;
9815         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9816         spin_lock_bh(&vsi->mac_filter_hash_lock);
9817         /* If macvlan filters already exist, force them to get loaded */
9818         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
9819                 f->state = I40E_FILTER_NEW;
9820                 f_count++;
9821         }
9822         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9823
9824         if (f_count) {
9825                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9826                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9827         }
9828
9829         /* Update VSI BW information */
9830         ret = i40e_vsi_get_bw_info(vsi);
9831         if (ret) {
9832                 dev_info(&pf->pdev->dev,
9833                          "couldn't get vsi bw info, err %s aq_err %s\n",
9834                          i40e_stat_str(&pf->hw, ret),
9835                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9836                 /* VSI is already added so not tearing that up */
9837                 ret = 0;
9838         }
9839
9840 err:
9841         return ret;
9842 }
9843
9844 /**
9845  * i40e_vsi_release - Delete a VSI and free its resources
9846  * @vsi: the VSI being removed
9847  *
9848  * Returns 0 on success or < 0 on error
9849  **/
9850 int i40e_vsi_release(struct i40e_vsi *vsi)
9851 {
9852         struct i40e_mac_filter *f;
9853         struct hlist_node *h;
9854         struct i40e_veb *veb = NULL;
9855         struct i40e_pf *pf;
9856         u16 uplink_seid;
9857         int i, n, bkt;
9858
9859         pf = vsi->back;
9860
9861         /* release of a VEB-owner or last VSI is not allowed */
9862         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9863                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9864                          vsi->seid, vsi->uplink_seid);
9865                 return -ENODEV;
9866         }
9867         if (vsi == pf->vsi[pf->lan_vsi] &&
9868             !test_bit(__I40E_DOWN, &pf->state)) {
9869                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9870                 return -ENODEV;
9871         }
9872
9873         uplink_seid = vsi->uplink_seid;
9874         if (vsi->type != I40E_VSI_SRIOV) {
9875                 if (vsi->netdev_registered) {
9876                         vsi->netdev_registered = false;
9877                         if (vsi->netdev) {
9878                                 /* results in a call to i40e_close() */
9879                                 unregister_netdev(vsi->netdev);
9880                         }
9881                 } else {
9882                         i40e_vsi_close(vsi);
9883                 }
9884                 i40e_vsi_disable_irq(vsi);
9885         }
9886
9887         spin_lock_bh(&vsi->mac_filter_hash_lock);
9888
9889         /* clear the sync flag on all filters */
9890         if (vsi->netdev) {
9891                 __dev_uc_unsync(vsi->netdev, NULL);
9892                 __dev_mc_unsync(vsi->netdev, NULL);
9893         }
9894
9895         /* make sure any remaining filters are marked for deletion */
9896         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
9897                 __i40e_del_filter(vsi, f);
9898
9899         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9900
9901         i40e_sync_vsi_filters(vsi);
9902
9903         i40e_vsi_delete(vsi);
9904         i40e_vsi_free_q_vectors(vsi);
9905         if (vsi->netdev) {
9906                 free_netdev(vsi->netdev);
9907                 vsi->netdev = NULL;
9908         }
9909         i40e_vsi_clear_rings(vsi);
9910         i40e_vsi_clear(vsi);
9911
9912         /* If this was the last thing on the VEB, except for the
9913          * controlling VSI, remove the VEB, which puts the controlling
9914          * VSI onto the next level down in the switch.
9915          *
9916          * Well, okay, there's one more exception here: don't remove
9917          * the orphan VEBs yet.  We'll wait for an explicit remove request
9918          * from up the network stack.
9919          */
9920         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9921                 if (pf->vsi[i] &&
9922                     pf->vsi[i]->uplink_seid == uplink_seid &&
9923                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9924                         n++;      /* count the VSIs */
9925                 }
9926         }
9927         for (i = 0; i < I40E_MAX_VEB; i++) {
9928                 if (!pf->veb[i])
9929                         continue;
9930                 if (pf->veb[i]->uplink_seid == uplink_seid)
9931                         n++;     /* count the VEBs */
9932                 if (pf->veb[i]->seid == uplink_seid)
9933                         veb = pf->veb[i];
9934         }
9935         if (n == 0 && veb && veb->uplink_seid != 0)
9936                 i40e_veb_release(veb);
9937
9938         return 0;
9939 }
9940
9941 /**
9942  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9943  * @vsi: ptr to the VSI
9944  *
9945  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9946  * corresponding SW VSI structure and initializes num_queue_pairs for the
9947  * newly allocated VSI.
9948  *
9949  * Returns 0 on success or negative on failure
9950  **/
9951 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9952 {
9953         int ret = -ENOENT;
9954         struct i40e_pf *pf = vsi->back;
9955
9956         if (vsi->q_vectors[0]) {
9957                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9958                          vsi->seid);
9959                 return -EEXIST;
9960         }
9961
9962         if (vsi->base_vector) {
9963                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9964                          vsi->seid, vsi->base_vector);
9965                 return -EEXIST;
9966         }
9967
9968         ret = i40e_vsi_alloc_q_vectors(vsi);
9969         if (ret) {
9970                 dev_info(&pf->pdev->dev,
9971                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9972                          vsi->num_q_vectors, vsi->seid, ret);
9973                 vsi->num_q_vectors = 0;
9974                 goto vector_setup_out;
9975         }
9976
9977         /* In Legacy mode, we do not have to get any other vector since we
9978          * piggyback on the misc/ICR0 for queue interrupts.
9979         */
9980         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9981                 return ret;
9982         if (vsi->num_q_vectors)
9983                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9984                                                  vsi->num_q_vectors, vsi->idx);
9985         if (vsi->base_vector < 0) {
9986                 dev_info(&pf->pdev->dev,
9987                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9988                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9989                 i40e_vsi_free_q_vectors(vsi);
9990                 ret = -ENOENT;
9991                 goto vector_setup_out;
9992         }
9993
9994 vector_setup_out:
9995         return ret;
9996 }
9997
9998 /**
9999  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
10000  * @vsi: pointer to the vsi.
10001  *
10002  * This re-allocates a vsi's queue resources.
10003  *
10004  * Returns pointer to the successfully allocated and configured VSI sw struct
10005  * on success, otherwise returns NULL on failure.
10006  **/
10007 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
10008 {
10009         struct i40e_pf *pf;
10010         u8 enabled_tc;
10011         int ret;
10012
10013         if (!vsi)
10014                 return NULL;
10015
10016         pf = vsi->back;
10017
10018         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
10019         i40e_vsi_clear_rings(vsi);
10020
10021         i40e_vsi_free_arrays(vsi, false);
10022         i40e_set_num_rings_in_vsi(vsi);
10023         ret = i40e_vsi_alloc_arrays(vsi, false);
10024         if (ret)
10025                 goto err_vsi;
10026
10027         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
10028         if (ret < 0) {
10029                 dev_info(&pf->pdev->dev,
10030                          "failed to get tracking for %d queues for VSI %d err %d\n",
10031                          vsi->alloc_queue_pairs, vsi->seid, ret);
10032                 goto err_vsi;
10033         }
10034         vsi->base_queue = ret;
10035
10036         /* Update the FW view of the VSI. Force a reset of TC and queue
10037          * layout configurations.
10038          */
10039         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10040         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10041         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10042         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10043         if (vsi->type == I40E_VSI_MAIN)
10044                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
10045
10046         /* assign it some queues */
10047         ret = i40e_alloc_rings(vsi);
10048         if (ret)
10049                 goto err_rings;
10050
10051         /* map all of the rings to the q_vectors */
10052         i40e_vsi_map_rings_to_vectors(vsi);
10053         return vsi;
10054
10055 err_rings:
10056         i40e_vsi_free_q_vectors(vsi);
10057         if (vsi->netdev_registered) {
10058                 vsi->netdev_registered = false;
10059                 unregister_netdev(vsi->netdev);
10060                 free_netdev(vsi->netdev);
10061                 vsi->netdev = NULL;
10062         }
10063         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
10064 err_vsi:
10065         i40e_vsi_clear(vsi);
10066         return NULL;
10067 }
10068
10069 /**
10070  * i40e_vsi_setup - Set up a VSI by a given type
10071  * @pf: board private structure
10072  * @type: VSI type
10073  * @uplink_seid: the switch element to link to
10074  * @param1: usage depends upon VSI type. For VF types, indicates VF id
10075  *
10076  * This allocates the sw VSI structure and its queue resources, then add a VSI
10077  * to the identified VEB.
10078  *
10079  * Returns pointer to the successfully allocated and configure VSI sw struct on
10080  * success, otherwise returns NULL on failure.
10081  **/
10082 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
10083                                 u16 uplink_seid, u32 param1)
10084 {
10085         struct i40e_vsi *vsi = NULL;
10086         struct i40e_veb *veb = NULL;
10087         int ret, i;
10088         int v_idx;
10089
10090         /* The requested uplink_seid must be either
10091          *     - the PF's port seid
10092          *              no VEB is needed because this is the PF
10093          *              or this is a Flow Director special case VSI
10094          *     - seid of an existing VEB
10095          *     - seid of a VSI that owns an existing VEB
10096          *     - seid of a VSI that doesn't own a VEB
10097          *              a new VEB is created and the VSI becomes the owner
10098          *     - seid of the PF VSI, which is what creates the first VEB
10099          *              this is a special case of the previous
10100          *
10101          * Find which uplink_seid we were given and create a new VEB if needed
10102          */
10103         for (i = 0; i < I40E_MAX_VEB; i++) {
10104                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
10105                         veb = pf->veb[i];
10106                         break;
10107                 }
10108         }
10109
10110         if (!veb && uplink_seid != pf->mac_seid) {
10111
10112                 for (i = 0; i < pf->num_alloc_vsi; i++) {
10113                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
10114                                 vsi = pf->vsi[i];
10115                                 break;
10116                         }
10117                 }
10118                 if (!vsi) {
10119                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
10120                                  uplink_seid);
10121                         return NULL;
10122                 }
10123
10124                 if (vsi->uplink_seid == pf->mac_seid)
10125                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
10126                                              vsi->tc_config.enabled_tc);
10127                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
10128                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
10129                                              vsi->tc_config.enabled_tc);
10130                 if (veb) {
10131                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
10132                                 dev_info(&vsi->back->pdev->dev,
10133                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
10134                                 return NULL;
10135                         }
10136                         /* We come up by default in VEPA mode if SRIOV is not
10137                          * already enabled, in which case we can't force VEPA
10138                          * mode.
10139                          */
10140                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
10141                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
10142                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
10143                         }
10144                         i40e_config_bridge_mode(veb);
10145                 }
10146                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
10147                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
10148                                 veb = pf->veb[i];
10149                 }
10150                 if (!veb) {
10151                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
10152                         return NULL;
10153                 }
10154
10155                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10156                 uplink_seid = veb->seid;
10157         }
10158
10159         /* get vsi sw struct */
10160         v_idx = i40e_vsi_mem_alloc(pf, type);
10161         if (v_idx < 0)
10162                 goto err_alloc;
10163         vsi = pf->vsi[v_idx];
10164         if (!vsi)
10165                 goto err_alloc;
10166         vsi->type = type;
10167         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
10168
10169         if (type == I40E_VSI_MAIN)
10170                 pf->lan_vsi = v_idx;
10171         else if (type == I40E_VSI_SRIOV)
10172                 vsi->vf_id = param1;
10173         /* assign it some queues */
10174         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
10175                                 vsi->idx);
10176         if (ret < 0) {
10177                 dev_info(&pf->pdev->dev,
10178                          "failed to get tracking for %d queues for VSI %d err=%d\n",
10179                          vsi->alloc_queue_pairs, vsi->seid, ret);
10180                 goto err_vsi;
10181         }
10182         vsi->base_queue = ret;
10183
10184         /* get a VSI from the hardware */
10185         vsi->uplink_seid = uplink_seid;
10186         ret = i40e_add_vsi(vsi);
10187         if (ret)
10188                 goto err_vsi;
10189
10190         switch (vsi->type) {
10191         /* setup the netdev if needed */
10192         case I40E_VSI_MAIN:
10193                 /* Apply relevant filters if a platform-specific mac
10194                  * address was selected.
10195                  */
10196                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
10197                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
10198                         if (ret) {
10199                                 dev_warn(&pf->pdev->dev,
10200                                          "could not set up macaddr; err %d\n",
10201                                          ret);
10202                         }
10203                 }
10204         case I40E_VSI_VMDQ2:
10205         case I40E_VSI_FCOE:
10206                 ret = i40e_config_netdev(vsi);
10207                 if (ret)
10208                         goto err_netdev;
10209                 ret = register_netdev(vsi->netdev);
10210                 if (ret)
10211                         goto err_netdev;
10212                 vsi->netdev_registered = true;
10213                 netif_carrier_off(vsi->netdev);
10214 #ifdef CONFIG_I40E_DCB
10215                 /* Setup DCB netlink interface */
10216                 i40e_dcbnl_setup(vsi);
10217 #endif /* CONFIG_I40E_DCB */
10218                 /* fall through */
10219
10220         case I40E_VSI_FDIR:
10221                 /* set up vectors and rings if needed */
10222                 ret = i40e_vsi_setup_vectors(vsi);
10223                 if (ret)
10224                         goto err_msix;
10225
10226                 ret = i40e_alloc_rings(vsi);
10227                 if (ret)
10228                         goto err_rings;
10229
10230                 /* map all of the rings to the q_vectors */
10231                 i40e_vsi_map_rings_to_vectors(vsi);
10232
10233                 i40e_vsi_reset_stats(vsi);
10234                 break;
10235
10236         default:
10237                 /* no netdev or rings for the other VSI types */
10238                 break;
10239         }
10240
10241         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
10242             (vsi->type == I40E_VSI_VMDQ2)) {
10243                 ret = i40e_vsi_config_rss(vsi);
10244         }
10245         return vsi;
10246
10247 err_rings:
10248         i40e_vsi_free_q_vectors(vsi);
10249 err_msix:
10250         if (vsi->netdev_registered) {
10251                 vsi->netdev_registered = false;
10252                 unregister_netdev(vsi->netdev);
10253                 free_netdev(vsi->netdev);
10254                 vsi->netdev = NULL;
10255         }
10256 err_netdev:
10257         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
10258 err_vsi:
10259         i40e_vsi_clear(vsi);
10260 err_alloc:
10261         return NULL;
10262 }
10263
10264 /**
10265  * i40e_veb_get_bw_info - Query VEB BW information
10266  * @veb: the veb to query
10267  *
10268  * Query the Tx scheduler BW configuration data for given VEB
10269  **/
10270 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
10271 {
10272         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
10273         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
10274         struct i40e_pf *pf = veb->pf;
10275         struct i40e_hw *hw = &pf->hw;
10276         u32 tc_bw_max;
10277         int ret = 0;
10278         int i;
10279
10280         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
10281                                                   &bw_data, NULL);
10282         if (ret) {
10283                 dev_info(&pf->pdev->dev,
10284                          "query veb bw config failed, err %s aq_err %s\n",
10285                          i40e_stat_str(&pf->hw, ret),
10286                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10287                 goto out;
10288         }
10289
10290         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
10291                                                    &ets_data, NULL);
10292         if (ret) {
10293                 dev_info(&pf->pdev->dev,
10294                          "query veb bw ets config failed, err %s aq_err %s\n",
10295                          i40e_stat_str(&pf->hw, ret),
10296                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10297                 goto out;
10298         }
10299
10300         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
10301         veb->bw_max_quanta = ets_data.tc_bw_max;
10302         veb->is_abs_credits = bw_data.absolute_credits_enable;
10303         veb->enabled_tc = ets_data.tc_valid_bits;
10304         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
10305                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
10306         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
10307                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
10308                 veb->bw_tc_limit_credits[i] =
10309                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
10310                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
10311         }
10312
10313 out:
10314         return ret;
10315 }
10316
10317 /**
10318  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
10319  * @pf: board private structure
10320  *
10321  * On error: returns error code (negative)
10322  * On success: returns vsi index in PF (positive)
10323  **/
10324 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
10325 {
10326         int ret = -ENOENT;
10327         struct i40e_veb *veb;
10328         int i;
10329
10330         /* Need to protect the allocation of switch elements at the PF level */
10331         mutex_lock(&pf->switch_mutex);
10332
10333         /* VEB list may be fragmented if VEB creation/destruction has
10334          * been happening.  We can afford to do a quick scan to look
10335          * for any free slots in the list.
10336          *
10337          * find next empty veb slot, looping back around if necessary
10338          */
10339         i = 0;
10340         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
10341                 i++;
10342         if (i >= I40E_MAX_VEB) {
10343                 ret = -ENOMEM;
10344                 goto err_alloc_veb;  /* out of VEB slots! */
10345         }
10346
10347         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10348         if (!veb) {
10349                 ret = -ENOMEM;
10350                 goto err_alloc_veb;
10351         }
10352         veb->pf = pf;
10353         veb->idx = i;
10354         veb->enabled_tc = 1;
10355
10356         pf->veb[i] = veb;
10357         ret = i;
10358 err_alloc_veb:
10359         mutex_unlock(&pf->switch_mutex);
10360         return ret;
10361 }
10362
10363 /**
10364  * i40e_switch_branch_release - Delete a branch of the switch tree
10365  * @branch: where to start deleting
10366  *
10367  * This uses recursion to find the tips of the branch to be
10368  * removed, deleting until we get back to and can delete this VEB.
10369  **/
10370 static void i40e_switch_branch_release(struct i40e_veb *branch)
10371 {
10372         struct i40e_pf *pf = branch->pf;
10373         u16 branch_seid = branch->seid;
10374         u16 veb_idx = branch->idx;
10375         int i;
10376
10377         /* release any VEBs on this VEB - RECURSION */
10378         for (i = 0; i < I40E_MAX_VEB; i++) {
10379                 if (!pf->veb[i])
10380                         continue;
10381                 if (pf->veb[i]->uplink_seid == branch->seid)
10382                         i40e_switch_branch_release(pf->veb[i]);
10383         }
10384
10385         /* Release the VSIs on this VEB, but not the owner VSI.
10386          *
10387          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10388          *       the VEB itself, so don't use (*branch) after this loop.
10389          */
10390         for (i = 0; i < pf->num_alloc_vsi; i++) {
10391                 if (!pf->vsi[i])
10392                         continue;
10393                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10394                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10395                         i40e_vsi_release(pf->vsi[i]);
10396                 }
10397         }
10398
10399         /* There's one corner case where the VEB might not have been
10400          * removed, so double check it here and remove it if needed.
10401          * This case happens if the veb was created from the debugfs
10402          * commands and no VSIs were added to it.
10403          */
10404         if (pf->veb[veb_idx])
10405                 i40e_veb_release(pf->veb[veb_idx]);
10406 }
10407
10408 /**
10409  * i40e_veb_clear - remove veb struct
10410  * @veb: the veb to remove
10411  **/
10412 static void i40e_veb_clear(struct i40e_veb *veb)
10413 {
10414         if (!veb)
10415                 return;
10416
10417         if (veb->pf) {
10418                 struct i40e_pf *pf = veb->pf;
10419
10420                 mutex_lock(&pf->switch_mutex);
10421                 if (pf->veb[veb->idx] == veb)
10422                         pf->veb[veb->idx] = NULL;
10423                 mutex_unlock(&pf->switch_mutex);
10424         }
10425
10426         kfree(veb);
10427 }
10428
10429 /**
10430  * i40e_veb_release - Delete a VEB and free its resources
10431  * @veb: the VEB being removed
10432  **/
10433 void i40e_veb_release(struct i40e_veb *veb)
10434 {
10435         struct i40e_vsi *vsi = NULL;
10436         struct i40e_pf *pf;
10437         int i, n = 0;
10438
10439         pf = veb->pf;
10440
10441         /* find the remaining VSI and check for extras */
10442         for (i = 0; i < pf->num_alloc_vsi; i++) {
10443                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10444                         n++;
10445                         vsi = pf->vsi[i];
10446                 }
10447         }
10448         if (n != 1) {
10449                 dev_info(&pf->pdev->dev,
10450                          "can't remove VEB %d with %d VSIs left\n",
10451                          veb->seid, n);
10452                 return;
10453         }
10454
10455         /* move the remaining VSI to uplink veb */
10456         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10457         if (veb->uplink_seid) {
10458                 vsi->uplink_seid = veb->uplink_seid;
10459                 if (veb->uplink_seid == pf->mac_seid)
10460                         vsi->veb_idx = I40E_NO_VEB;
10461                 else
10462                         vsi->veb_idx = veb->veb_idx;
10463         } else {
10464                 /* floating VEB */
10465                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10466                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10467         }
10468
10469         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10470         i40e_veb_clear(veb);
10471 }
10472
10473 /**
10474  * i40e_add_veb - create the VEB in the switch
10475  * @veb: the VEB to be instantiated
10476  * @vsi: the controlling VSI
10477  **/
10478 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10479 {
10480         struct i40e_pf *pf = veb->pf;
10481         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10482         int ret;
10483
10484         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10485                               veb->enabled_tc, false,
10486                               &veb->seid, enable_stats, NULL);
10487
10488         /* get a VEB from the hardware */
10489         if (ret) {
10490                 dev_info(&pf->pdev->dev,
10491                          "couldn't add VEB, err %s aq_err %s\n",
10492                          i40e_stat_str(&pf->hw, ret),
10493                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10494                 return -EPERM;
10495         }
10496
10497         /* get statistics counter */
10498         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10499                                          &veb->stats_idx, NULL, NULL, NULL);
10500         if (ret) {
10501                 dev_info(&pf->pdev->dev,
10502                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10503                          i40e_stat_str(&pf->hw, ret),
10504                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10505                 return -EPERM;
10506         }
10507         ret = i40e_veb_get_bw_info(veb);
10508         if (ret) {
10509                 dev_info(&pf->pdev->dev,
10510                          "couldn't get VEB bw info, err %s aq_err %s\n",
10511                          i40e_stat_str(&pf->hw, ret),
10512                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10513                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10514                 return -ENOENT;
10515         }
10516
10517         vsi->uplink_seid = veb->seid;
10518         vsi->veb_idx = veb->idx;
10519         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10520
10521         return 0;
10522 }
10523
10524 /**
10525  * i40e_veb_setup - Set up a VEB
10526  * @pf: board private structure
10527  * @flags: VEB setup flags
10528  * @uplink_seid: the switch element to link to
10529  * @vsi_seid: the initial VSI seid
10530  * @enabled_tc: Enabled TC bit-map
10531  *
10532  * This allocates the sw VEB structure and links it into the switch
10533  * It is possible and legal for this to be a duplicate of an already
10534  * existing VEB.  It is also possible for both uplink and vsi seids
10535  * to be zero, in order to create a floating VEB.
10536  *
10537  * Returns pointer to the successfully allocated VEB sw struct on
10538  * success, otherwise returns NULL on failure.
10539  **/
10540 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10541                                 u16 uplink_seid, u16 vsi_seid,
10542                                 u8 enabled_tc)
10543 {
10544         struct i40e_veb *veb, *uplink_veb = NULL;
10545         int vsi_idx, veb_idx;
10546         int ret;
10547
10548         /* if one seid is 0, the other must be 0 to create a floating relay */
10549         if ((uplink_seid == 0 || vsi_seid == 0) &&
10550             (uplink_seid + vsi_seid != 0)) {
10551                 dev_info(&pf->pdev->dev,
10552                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10553                          uplink_seid, vsi_seid);
10554                 return NULL;
10555         }
10556
10557         /* make sure there is such a vsi and uplink */
10558         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10559                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10560                         break;
10561         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10562                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10563                          vsi_seid);
10564                 return NULL;
10565         }
10566
10567         if (uplink_seid && uplink_seid != pf->mac_seid) {
10568                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10569                         if (pf->veb[veb_idx] &&
10570                             pf->veb[veb_idx]->seid == uplink_seid) {
10571                                 uplink_veb = pf->veb[veb_idx];
10572                                 break;
10573                         }
10574                 }
10575                 if (!uplink_veb) {
10576                         dev_info(&pf->pdev->dev,
10577                                  "uplink seid %d not found\n", uplink_seid);
10578                         return NULL;
10579                 }
10580         }
10581
10582         /* get veb sw struct */
10583         veb_idx = i40e_veb_mem_alloc(pf);
10584         if (veb_idx < 0)
10585                 goto err_alloc;
10586         veb = pf->veb[veb_idx];
10587         veb->flags = flags;
10588         veb->uplink_seid = uplink_seid;
10589         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10590         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10591
10592         /* create the VEB in the switch */
10593         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10594         if (ret)
10595                 goto err_veb;
10596         if (vsi_idx == pf->lan_vsi)
10597                 pf->lan_veb = veb->idx;
10598
10599         return veb;
10600
10601 err_veb:
10602         i40e_veb_clear(veb);
10603 err_alloc:
10604         return NULL;
10605 }
10606
10607 /**
10608  * i40e_setup_pf_switch_element - set PF vars based on switch type
10609  * @pf: board private structure
10610  * @ele: element we are building info from
10611  * @num_reported: total number of elements
10612  * @printconfig: should we print the contents
10613  *
10614  * helper function to assist in extracting a few useful SEID values.
10615  **/
10616 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10617                                 struct i40e_aqc_switch_config_element_resp *ele,
10618                                 u16 num_reported, bool printconfig)
10619 {
10620         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10621         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10622         u8 element_type = ele->element_type;
10623         u16 seid = le16_to_cpu(ele->seid);
10624
10625         if (printconfig)
10626                 dev_info(&pf->pdev->dev,
10627                          "type=%d seid=%d uplink=%d downlink=%d\n",
10628                          element_type, seid, uplink_seid, downlink_seid);
10629
10630         switch (element_type) {
10631         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10632                 pf->mac_seid = seid;
10633                 break;
10634         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10635                 /* Main VEB? */
10636                 if (uplink_seid != pf->mac_seid)
10637                         break;
10638                 if (pf->lan_veb == I40E_NO_VEB) {
10639                         int v;
10640
10641                         /* find existing or else empty VEB */
10642                         for (v = 0; v < I40E_MAX_VEB; v++) {
10643                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10644                                         pf->lan_veb = v;
10645                                         break;
10646                                 }
10647                         }
10648                         if (pf->lan_veb == I40E_NO_VEB) {
10649                                 v = i40e_veb_mem_alloc(pf);
10650                                 if (v < 0)
10651                                         break;
10652                                 pf->lan_veb = v;
10653                         }
10654                 }
10655
10656                 pf->veb[pf->lan_veb]->seid = seid;
10657                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10658                 pf->veb[pf->lan_veb]->pf = pf;
10659                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10660                 break;
10661         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10662                 if (num_reported != 1)
10663                         break;
10664                 /* This is immediately after a reset so we can assume this is
10665                  * the PF's VSI
10666                  */
10667                 pf->mac_seid = uplink_seid;
10668                 pf->pf_seid = downlink_seid;
10669                 pf->main_vsi_seid = seid;
10670                 if (printconfig)
10671                         dev_info(&pf->pdev->dev,
10672                                  "pf_seid=%d main_vsi_seid=%d\n",
10673                                  pf->pf_seid, pf->main_vsi_seid);
10674                 break;
10675         case I40E_SWITCH_ELEMENT_TYPE_PF:
10676         case I40E_SWITCH_ELEMENT_TYPE_VF:
10677         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10678         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10679         case I40E_SWITCH_ELEMENT_TYPE_PE:
10680         case I40E_SWITCH_ELEMENT_TYPE_PA:
10681                 /* ignore these for now */
10682                 break;
10683         default:
10684                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10685                          element_type, seid);
10686                 break;
10687         }
10688 }
10689
10690 /**
10691  * i40e_fetch_switch_configuration - Get switch config from firmware
10692  * @pf: board private structure
10693  * @printconfig: should we print the contents
10694  *
10695  * Get the current switch configuration from the device and
10696  * extract a few useful SEID values.
10697  **/
10698 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10699 {
10700         struct i40e_aqc_get_switch_config_resp *sw_config;
10701         u16 next_seid = 0;
10702         int ret = 0;
10703         u8 *aq_buf;
10704         int i;
10705
10706         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10707         if (!aq_buf)
10708                 return -ENOMEM;
10709
10710         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10711         do {
10712                 u16 num_reported, num_total;
10713
10714                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10715                                                 I40E_AQ_LARGE_BUF,
10716                                                 &next_seid, NULL);
10717                 if (ret) {
10718                         dev_info(&pf->pdev->dev,
10719                                  "get switch config failed err %s aq_err %s\n",
10720                                  i40e_stat_str(&pf->hw, ret),
10721                                  i40e_aq_str(&pf->hw,
10722                                              pf->hw.aq.asq_last_status));
10723                         kfree(aq_buf);
10724                         return -ENOENT;
10725                 }
10726
10727                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10728                 num_total = le16_to_cpu(sw_config->header.num_total);
10729
10730                 if (printconfig)
10731                         dev_info(&pf->pdev->dev,
10732                                  "header: %d reported %d total\n",
10733                                  num_reported, num_total);
10734
10735                 for (i = 0; i < num_reported; i++) {
10736                         struct i40e_aqc_switch_config_element_resp *ele =
10737                                 &sw_config->element[i];
10738
10739                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10740                                                      printconfig);
10741                 }
10742         } while (next_seid != 0);
10743
10744         kfree(aq_buf);
10745         return ret;
10746 }
10747
10748 /**
10749  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10750  * @pf: board private structure
10751  * @reinit: if the Main VSI needs to re-initialized.
10752  *
10753  * Returns 0 on success, negative value on failure
10754  **/
10755 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10756 {
10757         u16 flags = 0;
10758         int ret;
10759
10760         /* find out what's out there already */
10761         ret = i40e_fetch_switch_configuration(pf, false);
10762         if (ret) {
10763                 dev_info(&pf->pdev->dev,
10764                          "couldn't fetch switch config, err %s aq_err %s\n",
10765                          i40e_stat_str(&pf->hw, ret),
10766                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10767                 return ret;
10768         }
10769         i40e_pf_reset_stats(pf);
10770
10771         /* set the switch config bit for the whole device to
10772          * support limited promisc or true promisc
10773          * when user requests promisc. The default is limited
10774          * promisc.
10775         */
10776
10777         if ((pf->hw.pf_id == 0) &&
10778             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10779                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10780
10781         if (pf->hw.pf_id == 0) {
10782                 u16 valid_flags;
10783
10784                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10785                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10786                                                 NULL);
10787                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10788                         dev_info(&pf->pdev->dev,
10789                                  "couldn't set switch config bits, err %s aq_err %s\n",
10790                                  i40e_stat_str(&pf->hw, ret),
10791                                  i40e_aq_str(&pf->hw,
10792                                              pf->hw.aq.asq_last_status));
10793                         /* not a fatal problem, just keep going */
10794                 }
10795         }
10796
10797         /* first time setup */
10798         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10799                 struct i40e_vsi *vsi = NULL;
10800                 u16 uplink_seid;
10801
10802                 /* Set up the PF VSI associated with the PF's main VSI
10803                  * that is already in the HW switch
10804                  */
10805                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10806                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10807                 else
10808                         uplink_seid = pf->mac_seid;
10809                 if (pf->lan_vsi == I40E_NO_VSI)
10810                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10811                 else if (reinit)
10812                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10813                 if (!vsi) {
10814                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10815                         i40e_fdir_teardown(pf);
10816                         return -EAGAIN;
10817                 }
10818         } else {
10819                 /* force a reset of TC and queue layout configurations */
10820                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10821
10822                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10823                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10824                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10825         }
10826         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10827
10828         i40e_fdir_sb_setup(pf);
10829
10830         /* Setup static PF queue filter control settings */
10831         ret = i40e_setup_pf_filter_control(pf);
10832         if (ret) {
10833                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10834                          ret);
10835                 /* Failure here should not stop continuing other steps */
10836         }
10837
10838         /* enable RSS in the HW, even for only one queue, as the stack can use
10839          * the hash
10840          */
10841         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10842                 i40e_pf_config_rss(pf);
10843
10844         /* fill in link information and enable LSE reporting */
10845         i40e_link_event(pf);
10846
10847         /* Initialize user-specific link properties */
10848         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10849                                   I40E_AQ_AN_COMPLETED) ? true : false);
10850
10851         i40e_ptp_init(pf);
10852
10853         return ret;
10854 }
10855
10856 /**
10857  * i40e_determine_queue_usage - Work out queue distribution
10858  * @pf: board private structure
10859  **/
10860 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10861 {
10862         int queues_left;
10863
10864         pf->num_lan_qps = 0;
10865 #ifdef I40E_FCOE
10866         pf->num_fcoe_qps = 0;
10867 #endif
10868
10869         /* Find the max queues to be put into basic use.  We'll always be
10870          * using TC0, whether or not DCB is running, and TC0 will get the
10871          * big RSS set.
10872          */
10873         queues_left = pf->hw.func_caps.num_tx_qp;
10874
10875         if ((queues_left == 1) ||
10876             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10877                 /* one qp for PF, no queues for anything else */
10878                 queues_left = 0;
10879                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10880
10881                 /* make sure all the fancies are disabled */
10882                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10883                                I40E_FLAG_IWARP_ENABLED  |
10884 #ifdef I40E_FCOE
10885                                I40E_FLAG_FCOE_ENABLED   |
10886 #endif
10887                                I40E_FLAG_FD_SB_ENABLED  |
10888                                I40E_FLAG_FD_ATR_ENABLED |
10889                                I40E_FLAG_DCB_CAPABLE    |
10890                                I40E_FLAG_DCB_ENABLED    |
10891                                I40E_FLAG_SRIOV_ENABLED  |
10892                                I40E_FLAG_VMDQ_ENABLED);
10893         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10894                                   I40E_FLAG_FD_SB_ENABLED |
10895                                   I40E_FLAG_FD_ATR_ENABLED |
10896                                   I40E_FLAG_DCB_CAPABLE))) {
10897                 /* one qp for PF */
10898                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10899                 queues_left -= pf->num_lan_qps;
10900
10901                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10902                                I40E_FLAG_IWARP_ENABLED  |
10903 #ifdef I40E_FCOE
10904                                I40E_FLAG_FCOE_ENABLED   |
10905 #endif
10906                                I40E_FLAG_FD_SB_ENABLED  |
10907                                I40E_FLAG_FD_ATR_ENABLED |
10908                                I40E_FLAG_DCB_ENABLED    |
10909                                I40E_FLAG_VMDQ_ENABLED);
10910         } else {
10911                 /* Not enough queues for all TCs */
10912                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10913                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10914                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10915                                         I40E_FLAG_DCB_ENABLED);
10916                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10917                 }
10918                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10919                                         num_online_cpus());
10920                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10921                                         pf->hw.func_caps.num_tx_qp);
10922
10923                 queues_left -= pf->num_lan_qps;
10924         }
10925
10926 #ifdef I40E_FCOE
10927         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10928                 if (I40E_DEFAULT_FCOE <= queues_left) {
10929                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10930                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10931                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10932                 } else {
10933                         pf->num_fcoe_qps = 0;
10934                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10935                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10936                 }
10937
10938                 queues_left -= pf->num_fcoe_qps;
10939         }
10940
10941 #endif
10942         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10943                 if (queues_left > 1) {
10944                         queues_left -= 1; /* save 1 queue for FD */
10945                 } else {
10946                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10947                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10948                 }
10949         }
10950
10951         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10952             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10953                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10954                                         (queues_left / pf->num_vf_qps));
10955                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10956         }
10957
10958         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10959             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10960                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10961                                           (queues_left / pf->num_vmdq_qps));
10962                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10963         }
10964
10965         pf->queues_left = queues_left;
10966         dev_dbg(&pf->pdev->dev,
10967                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10968                 pf->hw.func_caps.num_tx_qp,
10969                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10970                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10971                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10972                 queues_left);
10973 #ifdef I40E_FCOE
10974         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10975 #endif
10976 }
10977
10978 /**
10979  * i40e_setup_pf_filter_control - Setup PF static filter control
10980  * @pf: PF to be setup
10981  *
10982  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10983  * settings. If PE/FCoE are enabled then it will also set the per PF
10984  * based filter sizes required for them. It also enables Flow director,
10985  * ethertype and macvlan type filter settings for the pf.
10986  *
10987  * Returns 0 on success, negative on failure
10988  **/
10989 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10990 {
10991         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10992
10993         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10994
10995         /* Flow Director is enabled */
10996         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10997                 settings->enable_fdir = true;
10998
10999         /* Ethtype and MACVLAN filters enabled for PF */
11000         settings->enable_ethtype = true;
11001         settings->enable_macvlan = true;
11002
11003         if (i40e_set_filter_control(&pf->hw, settings))
11004                 return -ENOENT;
11005
11006         return 0;
11007 }
11008
11009 #define INFO_STRING_LEN 255
11010 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
11011 static void i40e_print_features(struct i40e_pf *pf)
11012 {
11013         struct i40e_hw *hw = &pf->hw;
11014         char *buf;
11015         int i;
11016
11017         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
11018         if (!buf)
11019                 return;
11020
11021         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
11022 #ifdef CONFIG_PCI_IOV
11023         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
11024 #endif
11025         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
11026                       pf->hw.func_caps.num_vsis,
11027                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
11028         if (pf->flags & I40E_FLAG_RSS_ENABLED)
11029                 i += snprintf(&buf[i], REMAIN(i), " RSS");
11030         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
11031                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
11032         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11033                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
11034                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
11035         }
11036         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
11037                 i += snprintf(&buf[i], REMAIN(i), " DCB");
11038         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
11039         i += snprintf(&buf[i], REMAIN(i), " Geneve");
11040         if (pf->flags & I40E_FLAG_PTP)
11041                 i += snprintf(&buf[i], REMAIN(i), " PTP");
11042 #ifdef I40E_FCOE
11043         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
11044                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
11045 #endif
11046         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
11047                 i += snprintf(&buf[i], REMAIN(i), " VEB");
11048         else
11049                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
11050
11051         dev_info(&pf->pdev->dev, "%s\n", buf);
11052         kfree(buf);
11053         WARN_ON(i > INFO_STRING_LEN);
11054 }
11055
11056 /**
11057  * i40e_get_platform_mac_addr - get platform-specific MAC address
11058  *
11059  * @pdev: PCI device information struct
11060  * @pf: board private structure
11061  *
11062  * Look up the MAC address in Open Firmware  on systems that support it,
11063  * and use IDPROM on SPARC if no OF address is found. On return, the
11064  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
11065  * has been selected.
11066  **/
11067 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
11068 {
11069         pf->flags &= ~I40E_FLAG_PF_MAC;
11070         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
11071                 pf->flags |= I40E_FLAG_PF_MAC;
11072 }
11073
11074 /**
11075  * i40e_probe - Device initialization routine
11076  * @pdev: PCI device information struct
11077  * @ent: entry in i40e_pci_tbl
11078  *
11079  * i40e_probe initializes a PF identified by a pci_dev structure.
11080  * The OS initialization, configuring of the PF private structure,
11081  * and a hardware reset occur.
11082  *
11083  * Returns 0 on success, negative on failure
11084  **/
11085 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
11086 {
11087         struct i40e_aq_get_phy_abilities_resp abilities;
11088         struct i40e_pf *pf;
11089         struct i40e_hw *hw;
11090         static u16 pfs_found;
11091         u16 wol_nvm_bits;
11092         u16 link_status;
11093         int err;
11094         u32 val;
11095         u32 i;
11096         u8 set_fc_aq_fail;
11097
11098         err = pci_enable_device_mem(pdev);
11099         if (err)
11100                 return err;
11101
11102         /* set up for high or low dma */
11103         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
11104         if (err) {
11105                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
11106                 if (err) {
11107                         dev_err(&pdev->dev,
11108                                 "DMA configuration failed: 0x%x\n", err);
11109                         goto err_dma;
11110                 }
11111         }
11112
11113         /* set up pci connections */
11114         err = pci_request_mem_regions(pdev, i40e_driver_name);
11115         if (err) {
11116                 dev_info(&pdev->dev,
11117                          "pci_request_selected_regions failed %d\n", err);
11118                 goto err_pci_reg;
11119         }
11120
11121         pci_enable_pcie_error_reporting(pdev);
11122         pci_set_master(pdev);
11123
11124         /* Now that we have a PCI connection, we need to do the
11125          * low level device setup.  This is primarily setting up
11126          * the Admin Queue structures and then querying for the
11127          * device's current profile information.
11128          */
11129         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
11130         if (!pf) {
11131                 err = -ENOMEM;
11132                 goto err_pf_alloc;
11133         }
11134         pf->next_vsi = 0;
11135         pf->pdev = pdev;
11136         set_bit(__I40E_DOWN, &pf->state);
11137
11138         hw = &pf->hw;
11139         hw->back = pf;
11140
11141         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
11142                                 I40E_MAX_CSR_SPACE);
11143
11144         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
11145         if (!hw->hw_addr) {
11146                 err = -EIO;
11147                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
11148                          (unsigned int)pci_resource_start(pdev, 0),
11149                          pf->ioremap_len, err);
11150                 goto err_ioremap;
11151         }
11152         hw->vendor_id = pdev->vendor;
11153         hw->device_id = pdev->device;
11154         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
11155         hw->subsystem_vendor_id = pdev->subsystem_vendor;
11156         hw->subsystem_device_id = pdev->subsystem_device;
11157         hw->bus.device = PCI_SLOT(pdev->devfn);
11158         hw->bus.func = PCI_FUNC(pdev->devfn);
11159         hw->bus.bus_id = pdev->bus->number;
11160         pf->instance = pfs_found;
11161
11162         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
11163         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
11164
11165         /* set up the locks for the AQ, do this only once in probe
11166          * and destroy them only once in remove
11167          */
11168         mutex_init(&hw->aq.asq_mutex);
11169         mutex_init(&hw->aq.arq_mutex);
11170
11171         pf->msg_enable = netif_msg_init(debug,
11172                                         NETIF_MSG_DRV |
11173                                         NETIF_MSG_PROBE |
11174                                         NETIF_MSG_LINK);
11175         if (debug < -1)
11176                 pf->hw.debug_mask = debug;
11177
11178         /* do a special CORER for clearing PXE mode once at init */
11179         if (hw->revision_id == 0 &&
11180             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
11181                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
11182                 i40e_flush(hw);
11183                 msleep(200);
11184                 pf->corer_count++;
11185
11186                 i40e_clear_pxe_mode(hw);
11187         }
11188
11189         /* Reset here to make sure all is clean and to define PF 'n' */
11190         i40e_clear_hw(hw);
11191         err = i40e_pf_reset(hw);
11192         if (err) {
11193                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
11194                 goto err_pf_reset;
11195         }
11196         pf->pfr_count++;
11197
11198         hw->aq.num_arq_entries = I40E_AQ_LEN;
11199         hw->aq.num_asq_entries = I40E_AQ_LEN;
11200         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11201         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11202         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
11203
11204         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
11205                  "%s-%s:misc",
11206                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
11207
11208         err = i40e_init_shared_code(hw);
11209         if (err) {
11210                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
11211                          err);
11212                 goto err_pf_reset;
11213         }
11214
11215         /* set up a default setting for link flow control */
11216         pf->hw.fc.requested_mode = I40E_FC_NONE;
11217
11218         err = i40e_init_adminq(hw);
11219         if (err) {
11220                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
11221                         dev_info(&pdev->dev,
11222                                  "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");
11223                 else
11224                         dev_info(&pdev->dev,
11225                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
11226
11227                 goto err_pf_reset;
11228         }
11229
11230         /* provide nvm, fw, api versions */
11231         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
11232                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
11233                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
11234                  i40e_nvm_version_str(hw));
11235
11236         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
11237             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
11238                 dev_info(&pdev->dev,
11239                          "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");
11240         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
11241                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
11242                 dev_info(&pdev->dev,
11243                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
11244
11245         i40e_verify_eeprom(pf);
11246
11247         /* Rev 0 hardware was never productized */
11248         if (hw->revision_id < 1)
11249                 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");
11250
11251         i40e_clear_pxe_mode(hw);
11252         err = i40e_get_capabilities(pf);
11253         if (err)
11254                 goto err_adminq_setup;
11255
11256         err = i40e_sw_init(pf);
11257         if (err) {
11258                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
11259                 goto err_sw_init;
11260         }
11261
11262         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
11263                                 hw->func_caps.num_rx_qp,
11264                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
11265         if (err) {
11266                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
11267                 goto err_init_lan_hmc;
11268         }
11269
11270         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
11271         if (err) {
11272                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
11273                 err = -ENOENT;
11274                 goto err_configure_lan_hmc;
11275         }
11276
11277         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
11278          * Ignore error return codes because if it was already disabled via
11279          * hardware settings this will fail
11280          */
11281         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
11282                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
11283                 i40e_aq_stop_lldp(hw, true, NULL);
11284         }
11285
11286         i40e_get_mac_addr(hw, hw->mac.addr);
11287         /* allow a platform config to override the HW addr */
11288         i40e_get_platform_mac_addr(pdev, pf);
11289         if (!is_valid_ether_addr(hw->mac.addr)) {
11290                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
11291                 err = -EIO;
11292                 goto err_mac_addr;
11293         }
11294         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
11295         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
11296         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
11297         if (is_valid_ether_addr(hw->mac.port_addr))
11298                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
11299 #ifdef I40E_FCOE
11300         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
11301         if (err)
11302                 dev_info(&pdev->dev,
11303                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
11304         if (!is_valid_ether_addr(hw->mac.san_addr)) {
11305                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
11306                          hw->mac.san_addr);
11307                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
11308         }
11309         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
11310 #endif /* I40E_FCOE */
11311
11312         pci_set_drvdata(pdev, pf);
11313         pci_save_state(pdev);
11314 #ifdef CONFIG_I40E_DCB
11315         err = i40e_init_pf_dcb(pf);
11316         if (err) {
11317                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
11318                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
11319                 /* Continue without DCB enabled */
11320         }
11321 #endif /* CONFIG_I40E_DCB */
11322
11323         /* set up periodic task facility */
11324         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
11325         pf->service_timer_period = HZ;
11326
11327         INIT_WORK(&pf->service_task, i40e_service_task);
11328         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
11329         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
11330
11331         /* NVM bit on means WoL disabled for the port */
11332         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
11333         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
11334                 pf->wol_en = false;
11335         else
11336                 pf->wol_en = true;
11337         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
11338
11339         /* set up the main switch operations */
11340         i40e_determine_queue_usage(pf);
11341         err = i40e_init_interrupt_scheme(pf);
11342         if (err)
11343                 goto err_switch_setup;
11344
11345         /* The number of VSIs reported by the FW is the minimum guaranteed
11346          * to us; HW supports far more and we share the remaining pool with
11347          * the other PFs. We allocate space for more than the guarantee with
11348          * the understanding that we might not get them all later.
11349          */
11350         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11351                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11352         else
11353                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11354
11355         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11356         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11357                           GFP_KERNEL);
11358         if (!pf->vsi) {
11359                 err = -ENOMEM;
11360                 goto err_switch_setup;
11361         }
11362
11363 #ifdef CONFIG_PCI_IOV
11364         /* prep for VF support */
11365         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11366             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11367             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11368                 if (pci_num_vf(pdev))
11369                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11370         }
11371 #endif
11372         err = i40e_setup_pf_switch(pf, false);
11373         if (err) {
11374                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11375                 goto err_vsis;
11376         }
11377
11378         /* Make sure flow control is set according to current settings */
11379         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11380         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11381                 dev_dbg(&pf->pdev->dev,
11382                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11383                         i40e_stat_str(hw, err),
11384                         i40e_aq_str(hw, hw->aq.asq_last_status));
11385         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11386                 dev_dbg(&pf->pdev->dev,
11387                         "Set fc with err %s aq_err %s on set_phy_config\n",
11388                         i40e_stat_str(hw, err),
11389                         i40e_aq_str(hw, hw->aq.asq_last_status));
11390         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11391                 dev_dbg(&pf->pdev->dev,
11392                         "Set fc with err %s aq_err %s on get_link_info\n",
11393                         i40e_stat_str(hw, err),
11394                         i40e_aq_str(hw, hw->aq.asq_last_status));
11395
11396         /* if FDIR VSI was set up, start it now */
11397         for (i = 0; i < pf->num_alloc_vsi; i++) {
11398                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11399                         i40e_vsi_open(pf->vsi[i]);
11400                         break;
11401                 }
11402         }
11403
11404         /* The driver only wants link up/down and module qualification
11405          * reports from firmware.  Note the negative logic.
11406          */
11407         err = i40e_aq_set_phy_int_mask(&pf->hw,
11408                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11409                                          I40E_AQ_EVENT_MEDIA_NA |
11410                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11411         if (err)
11412                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11413                          i40e_stat_str(&pf->hw, err),
11414                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11415
11416         /* Reconfigure hardware for allowing smaller MSS in the case
11417          * of TSO, so that we avoid the MDD being fired and causing
11418          * a reset in the case of small MSS+TSO.
11419          */
11420         val = rd32(hw, I40E_REG_MSS);
11421         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11422                 val &= ~I40E_REG_MSS_MIN_MASK;
11423                 val |= I40E_64BYTE_MSS;
11424                 wr32(hw, I40E_REG_MSS, val);
11425         }
11426
11427         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11428                 msleep(75);
11429                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11430                 if (err)
11431                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11432                                  i40e_stat_str(&pf->hw, err),
11433                                  i40e_aq_str(&pf->hw,
11434                                              pf->hw.aq.asq_last_status));
11435         }
11436         /* The main driver is (mostly) up and happy. We need to set this state
11437          * before setting up the misc vector or we get a race and the vector
11438          * ends up disabled forever.
11439          */
11440         clear_bit(__I40E_DOWN, &pf->state);
11441
11442         /* In case of MSIX we are going to setup the misc vector right here
11443          * to handle admin queue events etc. In case of legacy and MSI
11444          * the misc functionality and queue processing is combined in
11445          * the same vector and that gets setup at open.
11446          */
11447         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11448                 err = i40e_setup_misc_vector(pf);
11449                 if (err) {
11450                         dev_info(&pdev->dev,
11451                                  "setup of misc vector failed: %d\n", err);
11452                         goto err_vsis;
11453                 }
11454         }
11455
11456 #ifdef CONFIG_PCI_IOV
11457         /* prep for VF support */
11458         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11459             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11460             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11461                 /* disable link interrupts for VFs */
11462                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11463                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11464                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11465                 i40e_flush(hw);
11466
11467                 if (pci_num_vf(pdev)) {
11468                         dev_info(&pdev->dev,
11469                                  "Active VFs found, allocating resources.\n");
11470                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11471                         if (err)
11472                                 dev_info(&pdev->dev,
11473                                          "Error %d allocating resources for existing VFs\n",
11474                                          err);
11475                 }
11476         }
11477 #endif /* CONFIG_PCI_IOV */
11478
11479         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11480                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11481                                                       pf->num_iwarp_msix,
11482                                                       I40E_IWARP_IRQ_PILE_ID);
11483                 if (pf->iwarp_base_vector < 0) {
11484                         dev_info(&pdev->dev,
11485                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11486                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11487                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11488                 }
11489         }
11490
11491         i40e_dbg_pf_init(pf);
11492
11493         /* tell the firmware that we're starting */
11494         i40e_send_version(pf);
11495
11496         /* since everything's happy, start the service_task timer */
11497         mod_timer(&pf->service_timer,
11498                   round_jiffies(jiffies + pf->service_timer_period));
11499
11500         /* add this PF to client device list and launch a client service task */
11501         err = i40e_lan_add_device(pf);
11502         if (err)
11503                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11504                          err);
11505
11506 #ifdef I40E_FCOE
11507         /* create FCoE interface */
11508         i40e_fcoe_vsi_setup(pf);
11509
11510 #endif
11511 #define PCI_SPEED_SIZE 8
11512 #define PCI_WIDTH_SIZE 8
11513         /* Devices on the IOSF bus do not have this information
11514          * and will report PCI Gen 1 x 1 by default so don't bother
11515          * checking them.
11516          */
11517         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11518                 char speed[PCI_SPEED_SIZE] = "Unknown";
11519                 char width[PCI_WIDTH_SIZE] = "Unknown";
11520
11521                 /* Get the negotiated link width and speed from PCI config
11522                  * space
11523                  */
11524                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11525                                           &link_status);
11526
11527                 i40e_set_pci_config_data(hw, link_status);
11528
11529                 switch (hw->bus.speed) {
11530                 case i40e_bus_speed_8000:
11531                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11532                 case i40e_bus_speed_5000:
11533                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11534                 case i40e_bus_speed_2500:
11535                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11536                 default:
11537                         break;
11538                 }
11539                 switch (hw->bus.width) {
11540                 case i40e_bus_width_pcie_x8:
11541                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11542                 case i40e_bus_width_pcie_x4:
11543                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11544                 case i40e_bus_width_pcie_x2:
11545                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11546                 case i40e_bus_width_pcie_x1:
11547                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11548                 default:
11549                         break;
11550                 }
11551
11552                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11553                          speed, width);
11554
11555                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11556                     hw->bus.speed < i40e_bus_speed_8000) {
11557                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11558                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11559                 }
11560         }
11561
11562         /* get the requested speeds from the fw */
11563         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11564         if (err)
11565                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11566                         i40e_stat_str(&pf->hw, err),
11567                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11568         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11569
11570         /* get the supported phy types from the fw */
11571         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11572         if (err)
11573                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11574                         i40e_stat_str(&pf->hw, err),
11575                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11576
11577         /* Add a filter to drop all Flow control frames from any VSI from being
11578          * transmitted. By doing so we stop a malicious VF from sending out
11579          * PAUSE or PFC frames and potentially controlling traffic for other
11580          * PF/VF VSIs.
11581          * The FW can still send Flow control frames if enabled.
11582          */
11583         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11584                                                        pf->main_vsi_seid);
11585
11586         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11587                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11588                 pf->flags |= I40E_FLAG_PHY_CONTROLS_LEDS;
11589         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
11590                 pf->flags |= I40E_FLAG_HAVE_CRT_RETIMER;
11591         /* print a string summarizing features */
11592         i40e_print_features(pf);
11593
11594         return 0;
11595
11596         /* Unwind what we've done if something failed in the setup */
11597 err_vsis:
11598         set_bit(__I40E_DOWN, &pf->state);
11599         i40e_clear_interrupt_scheme(pf);
11600         kfree(pf->vsi);
11601 err_switch_setup:
11602         i40e_reset_interrupt_capability(pf);
11603         del_timer_sync(&pf->service_timer);
11604 err_mac_addr:
11605 err_configure_lan_hmc:
11606         (void)i40e_shutdown_lan_hmc(hw);
11607 err_init_lan_hmc:
11608         kfree(pf->qp_pile);
11609 err_sw_init:
11610 err_adminq_setup:
11611 err_pf_reset:
11612         iounmap(hw->hw_addr);
11613 err_ioremap:
11614         kfree(pf);
11615 err_pf_alloc:
11616         pci_disable_pcie_error_reporting(pdev);
11617         pci_release_mem_regions(pdev);
11618 err_pci_reg:
11619 err_dma:
11620         pci_disable_device(pdev);
11621         return err;
11622 }
11623
11624 /**
11625  * i40e_remove - Device removal routine
11626  * @pdev: PCI device information struct
11627  *
11628  * i40e_remove is called by the PCI subsystem to alert the driver
11629  * that is should release a PCI device.  This could be caused by a
11630  * Hot-Plug event, or because the driver is going to be removed from
11631  * memory.
11632  **/
11633 static void i40e_remove(struct pci_dev *pdev)
11634 {
11635         struct i40e_pf *pf = pci_get_drvdata(pdev);
11636         struct i40e_hw *hw = &pf->hw;
11637         i40e_status ret_code;
11638         int i;
11639
11640         i40e_dbg_pf_exit(pf);
11641
11642         i40e_ptp_stop(pf);
11643
11644         /* Disable RSS in hw */
11645         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11646         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11647
11648         /* no more scheduling of any task */
11649         set_bit(__I40E_SUSPENDED, &pf->state);
11650         set_bit(__I40E_DOWN, &pf->state);
11651         if (pf->service_timer.data)
11652                 del_timer_sync(&pf->service_timer);
11653         if (pf->service_task.func)
11654                 cancel_work_sync(&pf->service_task);
11655
11656         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11657                 i40e_free_vfs(pf);
11658                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11659         }
11660
11661         i40e_fdir_teardown(pf);
11662
11663         /* If there is a switch structure or any orphans, remove them.
11664          * This will leave only the PF's VSI remaining.
11665          */
11666         for (i = 0; i < I40E_MAX_VEB; i++) {
11667                 if (!pf->veb[i])
11668                         continue;
11669
11670                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11671                     pf->veb[i]->uplink_seid == 0)
11672                         i40e_switch_branch_release(pf->veb[i]);
11673         }
11674
11675         /* Now we can shutdown the PF's VSI, just before we kill
11676          * adminq and hmc.
11677          */
11678         if (pf->vsi[pf->lan_vsi])
11679                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11680
11681         /* remove attached clients */
11682         ret_code = i40e_lan_del_device(pf);
11683         if (ret_code) {
11684                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11685                          ret_code);
11686         }
11687
11688         /* shutdown and destroy the HMC */
11689         if (hw->hmc.hmc_obj) {
11690                 ret_code = i40e_shutdown_lan_hmc(hw);
11691                 if (ret_code)
11692                         dev_warn(&pdev->dev,
11693                                  "Failed to destroy the HMC resources: %d\n",
11694                                  ret_code);
11695         }
11696
11697         /* shutdown the adminq */
11698         i40e_shutdown_adminq(hw);
11699
11700         /* destroy the locks only once, here */
11701         mutex_destroy(&hw->aq.arq_mutex);
11702         mutex_destroy(&hw->aq.asq_mutex);
11703
11704         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11705         i40e_clear_interrupt_scheme(pf);
11706         for (i = 0; i < pf->num_alloc_vsi; i++) {
11707                 if (pf->vsi[i]) {
11708                         i40e_vsi_clear_rings(pf->vsi[i]);
11709                         i40e_vsi_clear(pf->vsi[i]);
11710                         pf->vsi[i] = NULL;
11711                 }
11712         }
11713
11714         for (i = 0; i < I40E_MAX_VEB; i++) {
11715                 kfree(pf->veb[i]);
11716                 pf->veb[i] = NULL;
11717         }
11718
11719         kfree(pf->qp_pile);
11720         kfree(pf->vsi);
11721
11722         iounmap(hw->hw_addr);
11723         kfree(pf);
11724         pci_release_mem_regions(pdev);
11725
11726         pci_disable_pcie_error_reporting(pdev);
11727         pci_disable_device(pdev);
11728 }
11729
11730 /**
11731  * i40e_pci_error_detected - warning that something funky happened in PCI land
11732  * @pdev: PCI device information struct
11733  *
11734  * Called to warn that something happened and the error handling steps
11735  * are in progress.  Allows the driver to quiesce things, be ready for
11736  * remediation.
11737  **/
11738 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11739                                                 enum pci_channel_state error)
11740 {
11741         struct i40e_pf *pf = pci_get_drvdata(pdev);
11742
11743         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11744
11745         if (!pf) {
11746                 dev_info(&pdev->dev,
11747                          "Cannot recover - error happened during device probe\n");
11748                 return PCI_ERS_RESULT_DISCONNECT;
11749         }
11750
11751         /* shutdown all operations */
11752         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11753                 rtnl_lock();
11754                 i40e_prep_for_reset(pf);
11755                 rtnl_unlock();
11756         }
11757
11758         /* Request a slot reset */
11759         return PCI_ERS_RESULT_NEED_RESET;
11760 }
11761
11762 /**
11763  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11764  * @pdev: PCI device information struct
11765  *
11766  * Called to find if the driver can work with the device now that
11767  * the pci slot has been reset.  If a basic connection seems good
11768  * (registers are readable and have sane content) then return a
11769  * happy little PCI_ERS_RESULT_xxx.
11770  **/
11771 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11772 {
11773         struct i40e_pf *pf = pci_get_drvdata(pdev);
11774         pci_ers_result_t result;
11775         int err;
11776         u32 reg;
11777
11778         dev_dbg(&pdev->dev, "%s\n", __func__);
11779         if (pci_enable_device_mem(pdev)) {
11780                 dev_info(&pdev->dev,
11781                          "Cannot re-enable PCI device after reset.\n");
11782                 result = PCI_ERS_RESULT_DISCONNECT;
11783         } else {
11784                 pci_set_master(pdev);
11785                 pci_restore_state(pdev);
11786                 pci_save_state(pdev);
11787                 pci_wake_from_d3(pdev, false);
11788
11789                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11790                 if (reg == 0)
11791                         result = PCI_ERS_RESULT_RECOVERED;
11792                 else
11793                         result = PCI_ERS_RESULT_DISCONNECT;
11794         }
11795
11796         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11797         if (err) {
11798                 dev_info(&pdev->dev,
11799                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11800                          err);
11801                 /* non-fatal, continue */
11802         }
11803
11804         return result;
11805 }
11806
11807 /**
11808  * i40e_pci_error_resume - restart operations after PCI error recovery
11809  * @pdev: PCI device information struct
11810  *
11811  * Called to allow the driver to bring things back up after PCI error
11812  * and/or reset recovery has finished.
11813  **/
11814 static void i40e_pci_error_resume(struct pci_dev *pdev)
11815 {
11816         struct i40e_pf *pf = pci_get_drvdata(pdev);
11817
11818         dev_dbg(&pdev->dev, "%s\n", __func__);
11819         if (test_bit(__I40E_SUSPENDED, &pf->state))
11820                 return;
11821
11822         rtnl_lock();
11823         i40e_handle_reset_warning(pf);
11824         rtnl_unlock();
11825 }
11826
11827 /**
11828  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
11829  * using the mac_address_write admin q function
11830  * @pf: pointer to i40e_pf struct
11831  **/
11832 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
11833 {
11834         struct i40e_hw *hw = &pf->hw;
11835         i40e_status ret;
11836         u8 mac_addr[6];
11837         u16 flags = 0;
11838
11839         /* Get current MAC address in case it's an LAA */
11840         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
11841                 ether_addr_copy(mac_addr,
11842                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
11843         } else {
11844                 dev_err(&pf->pdev->dev,
11845                         "Failed to retrieve MAC address; using default\n");
11846                 ether_addr_copy(mac_addr, hw->mac.addr);
11847         }
11848
11849         /* The FW expects the mac address write cmd to first be called with
11850          * one of these flags before calling it again with the multicast
11851          * enable flags.
11852          */
11853         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
11854
11855         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
11856                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
11857
11858         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
11859         if (ret) {
11860                 dev_err(&pf->pdev->dev,
11861                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
11862                 return;
11863         }
11864
11865         flags = I40E_AQC_MC_MAG_EN
11866                         | I40E_AQC_WOL_PRESERVE_ON_PFR
11867                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
11868         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
11869         if (ret)
11870                 dev_err(&pf->pdev->dev,
11871                         "Failed to enable Multicast Magic Packet wake up\n");
11872 }
11873
11874 /**
11875  * i40e_shutdown - PCI callback for shutting down
11876  * @pdev: PCI device information struct
11877  **/
11878 static void i40e_shutdown(struct pci_dev *pdev)
11879 {
11880         struct i40e_pf *pf = pci_get_drvdata(pdev);
11881         struct i40e_hw *hw = &pf->hw;
11882
11883         set_bit(__I40E_SUSPENDED, &pf->state);
11884         set_bit(__I40E_DOWN, &pf->state);
11885         rtnl_lock();
11886         i40e_prep_for_reset(pf);
11887         rtnl_unlock();
11888
11889         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11890         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11891
11892         del_timer_sync(&pf->service_timer);
11893         cancel_work_sync(&pf->service_task);
11894         i40e_fdir_teardown(pf);
11895
11896         if (pf->wol_en && (pf->flags & I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE))
11897                 i40e_enable_mc_magic_wake(pf);
11898
11899         rtnl_lock();
11900         i40e_prep_for_reset(pf);
11901         rtnl_unlock();
11902
11903         wr32(hw, I40E_PFPM_APM,
11904              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11905         wr32(hw, I40E_PFPM_WUFC,
11906              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11907
11908         i40e_clear_interrupt_scheme(pf);
11909
11910         if (system_state == SYSTEM_POWER_OFF) {
11911                 pci_wake_from_d3(pdev, pf->wol_en);
11912                 pci_set_power_state(pdev, PCI_D3hot);
11913         }
11914 }
11915
11916 #ifdef CONFIG_PM
11917 /**
11918  * i40e_suspend - PCI callback for moving to D3
11919  * @pdev: PCI device information struct
11920  **/
11921 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11922 {
11923         struct i40e_pf *pf = pci_get_drvdata(pdev);
11924         struct i40e_hw *hw = &pf->hw;
11925         int retval = 0;
11926
11927         set_bit(__I40E_SUSPENDED, &pf->state);
11928         set_bit(__I40E_DOWN, &pf->state);
11929
11930         if (pf->wol_en && (pf->flags & I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE))
11931                 i40e_enable_mc_magic_wake(pf);
11932
11933         rtnl_lock();
11934         i40e_prep_for_reset(pf);
11935         rtnl_unlock();
11936
11937         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11938         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11939
11940         i40e_stop_misc_vector(pf);
11941
11942         retval = pci_save_state(pdev);
11943         if (retval)
11944                 return retval;
11945
11946         pci_wake_from_d3(pdev, pf->wol_en);
11947         pci_set_power_state(pdev, PCI_D3hot);
11948
11949         return retval;
11950 }
11951
11952 /**
11953  * i40e_resume - PCI callback for waking up from D3
11954  * @pdev: PCI device information struct
11955  **/
11956 static int i40e_resume(struct pci_dev *pdev)
11957 {
11958         struct i40e_pf *pf = pci_get_drvdata(pdev);
11959         u32 err;
11960
11961         pci_set_power_state(pdev, PCI_D0);
11962         pci_restore_state(pdev);
11963         /* pci_restore_state() clears dev->state_saves, so
11964          * call pci_save_state() again to restore it.
11965          */
11966         pci_save_state(pdev);
11967
11968         err = pci_enable_device_mem(pdev);
11969         if (err) {
11970                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11971                 return err;
11972         }
11973         pci_set_master(pdev);
11974
11975         /* no wakeup events while running */
11976         pci_wake_from_d3(pdev, false);
11977
11978         /* handling the reset will rebuild the device state */
11979         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11980                 clear_bit(__I40E_DOWN, &pf->state);
11981                 rtnl_lock();
11982                 i40e_reset_and_rebuild(pf, false);
11983                 rtnl_unlock();
11984         }
11985
11986         return 0;
11987 }
11988
11989 #endif
11990 static const struct pci_error_handlers i40e_err_handler = {
11991         .error_detected = i40e_pci_error_detected,
11992         .slot_reset = i40e_pci_error_slot_reset,
11993         .resume = i40e_pci_error_resume,
11994 };
11995
11996 static struct pci_driver i40e_driver = {
11997         .name     = i40e_driver_name,
11998         .id_table = i40e_pci_tbl,
11999         .probe    = i40e_probe,
12000         .remove   = i40e_remove,
12001 #ifdef CONFIG_PM
12002         .suspend  = i40e_suspend,
12003         .resume   = i40e_resume,
12004 #endif
12005         .shutdown = i40e_shutdown,
12006         .err_handler = &i40e_err_handler,
12007         .sriov_configure = i40e_pci_sriov_configure,
12008 };
12009
12010 /**
12011  * i40e_init_module - Driver registration routine
12012  *
12013  * i40e_init_module is the first routine called when the driver is
12014  * loaded. All it does is register with the PCI subsystem.
12015  **/
12016 static int __init i40e_init_module(void)
12017 {
12018         pr_info("%s: %s - version %s\n", i40e_driver_name,
12019                 i40e_driver_string, i40e_driver_version_str);
12020         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
12021
12022         /* we will see if single thread per module is enough for now,
12023          * it can't be any worse than using the system workqueue which
12024          * was already single threaded
12025          */
12026         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
12027                                   i40e_driver_name);
12028         if (!i40e_wq) {
12029                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
12030                 return -ENOMEM;
12031         }
12032
12033         i40e_dbg_init();
12034         return pci_register_driver(&i40e_driver);
12035 }
12036 module_init(i40e_init_module);
12037
12038 /**
12039  * i40e_exit_module - Driver exit cleanup routine
12040  *
12041  * i40e_exit_module is called just before the driver is removed
12042  * from memory.
12043  **/
12044 static void __exit i40e_exit_module(void)
12045 {
12046         pci_unregister_driver(&i40e_driver);
12047         destroy_workqueue(i40e_wq);
12048         i40e_dbg_exit();
12049 }
12050 module_exit(i40e_exit_module);