drivers/net/ethernet/intel/iavf/iavf_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #include "iavf.h"
   5 #include "iavf_prototype.h"
   6 #include "iavf_client.h"
   7 /* All iavf tracepoints are defined by the include below, which must
   8  * be included exactly once across the whole kernel with
   9  * CREATE_TRACE_POINTS defined
  10  */
  11 #define CREATE_TRACE_POINTS
  12 #include "iavf_trace.h"
  13
  14 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter);
  15 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter);
  16 static int iavf_close(struct net_device *netdev);
  17 static void iavf_init_get_resources(struct iavf_adapter *adapter);
  18 static int iavf_check_reset_complete(struct iavf_hw *hw);
  19
  20 char iavf_driver_name[] = "iavf";
  21 static const char iavf_driver_string[] =
  22         "Intel(R) Ethernet Adaptive Virtual Function Network Driver";
  23
  24 static const char iavf_copyright[] =
  25         "Copyright (c) 2013 - 2018 Intel Corporation.";
  26
  27 /* iavf_pci_tbl - PCI Device ID Table
  28  *
  29  * Wildcard entries (PCI_ANY_ID) should come last
  30  * Last entry must be all 0s
  31  *
  32  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  33  *   Class, Class Mask, private data (not used) }
  34  */
  35 static const struct pci_device_id iavf_pci_tbl[] = {
  36         {PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF), 0},
  37         {PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF_HV), 0},
  38         {PCI_VDEVICE(INTEL, IAVF_DEV_ID_X722_VF), 0},
  39         {PCI_VDEVICE(INTEL, IAVF_DEV_ID_ADAPTIVE_VF), 0},
  40         /* required last entry */
  41         {0, }
  42 };
  43
  44 MODULE_DEVICE_TABLE(pci, iavf_pci_tbl);
  45
  46 MODULE_ALIAS("i40evf");
  47 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
  48 MODULE_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver");
  49 MODULE_LICENSE("GPL v2");
  50
  51 static const struct net_device_ops iavf_netdev_ops;
  52 struct workqueue_struct *iavf_wq;
  53
  54 /**
  55  * iavf_pdev_to_adapter - go from pci_dev to adapter
  56  * @pdev: pci_dev pointer
  57  */
  58 static struct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev)
  59 {
  60         return netdev_priv(pci_get_drvdata(pdev));
  61 }
  62
  63 /**
  64  * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code
  65  * @hw:   pointer to the HW structure
  66  * @mem:  ptr to mem struct to fill out
  67  * @size: size of memory requested
  68  * @alignment: what to align the allocation to
  69  **/
  70 enum iavf_status iavf_allocate_dma_mem_d(struct iavf_hw *hw,
  71                                          struct iavf_dma_mem *mem,
  72                                          u64 size, u32 alignment)
  73 {
  74         struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;
  75
  76         if (!mem)
  77                 return IAVF_ERR_PARAM;
  78
  79         mem->size = ALIGN(size, alignment);
  80         mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size,
  81                                      (dma_addr_t *)&mem->pa, GFP_KERNEL);
  82         if (mem->va)
  83                 return 0;
  84         else
  85                 return IAVF_ERR_NO_MEMORY;
  86 }
  87
  88 /**
  89  * iavf_free_dma_mem_d - OS specific memory free for shared code
  90  * @hw:   pointer to the HW structure
  91  * @mem:  ptr to mem struct to free
  92  **/
  93 enum iavf_status iavf_free_dma_mem_d(struct iavf_hw *hw,
  94                                      struct iavf_dma_mem *mem)
  95 {
  96         struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back;
  97
  98         if (!mem || !mem->va)
  99                 return IAVF_ERR_PARAM;
 100         dma_free_coherent(&adapter->pdev->dev, mem->size,
 101                           mem->va, (dma_addr_t)mem->pa);
 102         return 0;
 103 }
 104
 105 /**
 106  * iavf_allocate_virt_mem_d - OS specific memory alloc for shared code
 107  * @hw:   pointer to the HW structure
 108  * @mem:  ptr to mem struct to fill out
 109  * @size: size of memory requested
 110  **/
 111 enum iavf_status iavf_allocate_virt_mem_d(struct iavf_hw *hw,
 112                                           struct iavf_virt_mem *mem, u32 size)
 113 {
 114         if (!mem)
 115                 return IAVF_ERR_PARAM;
 116
 117         mem->size = size;
 118         mem->va = kzalloc(size, GFP_KERNEL);
 119
 120         if (mem->va)
 121                 return 0;
 122         else
 123                 return IAVF_ERR_NO_MEMORY;
 124 }
 125
 126 /**
 127  * iavf_free_virt_mem_d - OS specific memory free for shared code
 128  * @hw:   pointer to the HW structure
 129  * @mem:  ptr to mem struct to free
 130  **/
 131 enum iavf_status iavf_free_virt_mem_d(struct iavf_hw *hw,
 132                                       struct iavf_virt_mem *mem)
 133 {
 134         if (!mem)
 135                 return IAVF_ERR_PARAM;
 136
 137         /* it's ok to kfree a NULL pointer */
 138         kfree(mem->va);
 139
 140         return 0;
 141 }
 142
 143 /**
 144  * iavf_lock_timeout - try to lock mutex but give up after timeout
 145  * @lock: mutex that should be locked
 146  * @msecs: timeout in msecs
 147  *
 148  * Returns 0 on success, negative on failure
 149  **/
 150 int iavf_lock_timeout(struct mutex *lock, unsigned int msecs)
 151 {
 152         unsigned int wait, delay = 10;
 153
 154         for (wait = 0; wait < msecs; wait += delay) {
 155                 if (mutex_trylock(lock))
 156                         return 0;
 157
 158                 msleep(delay);
 159         }
 160
 161         return -1;
 162 }
 163
 164 /**
 165  * iavf_schedule_reset - Set the flags and schedule a reset event
 166  * @adapter: board private structure
 167  **/
 168 void iavf_schedule_reset(struct iavf_adapter *adapter)
 169 {
 170         if (!(adapter->flags &
 171               (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) {
 172                 adapter->flags |= IAVF_FLAG_RESET_NEEDED;
 173                 queue_work(iavf_wq, &adapter->reset_task);
 174         }
 175 }
 176
 177 /**
 178  * iavf_schedule_request_stats - Set the flags and schedule statistics request
 179  * @adapter: board private structure
 180  *
 181  * Sets IAVF_FLAG_AQ_REQUEST_STATS flag so iavf_watchdog_task() will explicitly
 182  * request and refresh ethtool stats
 183  **/
 184 void iavf_schedule_request_stats(struct iavf_adapter *adapter)
 185 {
 186         adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_STATS;
 187         mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
 188 }
 189
 190 /**
 191  * iavf_tx_timeout - Respond to a Tx Hang
 192  * @netdev: network interface device structure
 193  * @txqueue: queue number that is timing out
 194  **/
 195 static void iavf_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 196 {
 197         struct iavf_adapter *adapter = netdev_priv(netdev);
 198
 199         adapter->tx_timeout_count++;
 200         iavf_schedule_reset(adapter);
 201 }
 202
 203 /**
 204  * iavf_misc_irq_disable - Mask off interrupt generation on the NIC
 205  * @adapter: board private structure
 206  **/
 207 static void iavf_misc_irq_disable(struct iavf_adapter *adapter)
 208 {
 209         struct iavf_hw *hw = &adapter->hw;
 210
 211         if (!adapter->msix_entries)
 212                 return;
 213
 214         wr32(hw, IAVF_VFINT_DYN_CTL01, 0);
 215
 216         iavf_flush(hw);
 217
 218         synchronize_irq(adapter->msix_entries[0].vector);
 219 }
 220
 221 /**
 222  * iavf_misc_irq_enable - Enable default interrupt generation settings
 223  * @adapter: board private structure
 224  **/
 225 static void iavf_misc_irq_enable(struct iavf_adapter *adapter)
 226 {
 227         struct iavf_hw *hw = &adapter->hw;
 228
 229         wr32(hw, IAVF_VFINT_DYN_CTL01, IAVF_VFINT_DYN_CTL01_INTENA_MASK |
 230                                        IAVF_VFINT_DYN_CTL01_ITR_INDX_MASK);
 231         wr32(hw, IAVF_VFINT_ICR0_ENA1, IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK);
 232
 233         iavf_flush(hw);
 234 }
 235
 236 /**
 237  * iavf_irq_disable - Mask off interrupt generation on the NIC
 238  * @adapter: board private structure
 239  **/
 240 static void iavf_irq_disable(struct iavf_adapter *adapter)
 241 {
 242         int i;
 243         struct iavf_hw *hw = &adapter->hw;
 244
 245         if (!adapter->msix_entries)
 246                 return;
 247
 248         for (i = 1; i < adapter->num_msix_vectors; i++) {
 249                 wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 0);
 250                 synchronize_irq(adapter->msix_entries[i].vector);
 251         }
 252         iavf_flush(hw);
 253 }
 254
 255 /**
 256  * iavf_irq_enable_queues - Enable interrupt for specified queues
 257  * @adapter: board private structure
 258  * @mask: bitmap of queues to enable
 259  **/
 260 void iavf_irq_enable_queues(struct iavf_adapter *adapter, u32 mask)
 261 {
 262         struct iavf_hw *hw = &adapter->hw;
 263         int i;
 264
 265         for (i = 1; i < adapter->num_msix_vectors; i++) {
 266                 if (mask & BIT(i - 1)) {
 267                         wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1),
 268                              IAVF_VFINT_DYN_CTLN1_INTENA_MASK |
 269                              IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK);
 270                 }
 271         }
 272 }
 273
 274 /**
 275  * iavf_irq_enable - Enable default interrupt generation settings
 276  * @adapter: board private structure
 277  * @flush: boolean value whether to run rd32()
 278  **/
 279 void iavf_irq_enable(struct iavf_adapter *adapter, bool flush)
 280 {
 281         struct iavf_hw *hw = &adapter->hw;
 282
 283         iavf_misc_irq_enable(adapter);
 284         iavf_irq_enable_queues(adapter, ~0);
 285
 286         if (flush)
 287                 iavf_flush(hw);
 288 }
 289
 290 /**
 291  * iavf_msix_aq - Interrupt handler for vector 0
 292  * @irq: interrupt number
 293  * @data: pointer to netdev
 294  **/
 295 static irqreturn_t iavf_msix_aq(int irq, void *data)
 296 {
 297         struct net_device *netdev = data;
 298         struct iavf_adapter *adapter = netdev_priv(netdev);
 299         struct iavf_hw *hw = &adapter->hw;
 300
 301         /* handle non-queue interrupts, these reads clear the registers */
 302         rd32(hw, IAVF_VFINT_ICR01);
 303         rd32(hw, IAVF_VFINT_ICR0_ENA1);
 304
 305         if (adapter->state != __IAVF_REMOVE)
 306                 /* schedule work on the private workqueue */
 307                 queue_work(iavf_wq, &adapter->adminq_task);
 308
 309         return IRQ_HANDLED;
 310 }
 311
 312 /**
 313  * iavf_msix_clean_rings - MSIX mode Interrupt Handler
 314  * @irq: interrupt number
 315  * @data: pointer to a q_vector
 316  **/
 317 static irqreturn_t iavf_msix_clean_rings(int irq, void *data)
 318 {
 319         struct iavf_q_vector *q_vector = data;
 320
 321         if (!q_vector->tx.ring && !q_vector->rx.ring)
 322                 return IRQ_HANDLED;
 323
 324         napi_schedule_irqoff(&q_vector->napi);
 325
 326         return IRQ_HANDLED;
 327 }
 328
 329 /**
 330  * iavf_map_vector_to_rxq - associate irqs with rx queues
 331  * @adapter: board private structure
 332  * @v_idx: interrupt number
 333  * @r_idx: queue number
 334  **/
 335 static void
 336 iavf_map_vector_to_rxq(struct iavf_adapter *adapter, int v_idx, int r_idx)
 337 {
 338         struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx];
 339         struct iavf_ring *rx_ring = &adapter->rx_rings[r_idx];
 340         struct iavf_hw *hw = &adapter->hw;
 341
 342         rx_ring->q_vector = q_vector;
 343         rx_ring->next = q_vector->rx.ring;
 344         rx_ring->vsi = &adapter->vsi;
 345         q_vector->rx.ring = rx_ring;
 346         q_vector->rx.count++;
 347         q_vector->rx.next_update = jiffies + 1;
 348         q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting);
 349         q_vector->ring_mask |= BIT(r_idx);
 350         wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR, q_vector->reg_idx),
 351              q_vector->rx.current_itr >> 1);
 352         q_vector->rx.current_itr = q_vector->rx.target_itr;
 353 }
 354
 355 /**
 356  * iavf_map_vector_to_txq - associate irqs with tx queues
 357  * @adapter: board private structure
 358  * @v_idx: interrupt number
 359  * @t_idx: queue number
 360  **/
 361 static void
 362 iavf_map_vector_to_txq(struct iavf_adapter *adapter, int v_idx, int t_idx)
 363 {
 364         struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx];
 365         struct iavf_ring *tx_ring = &adapter->tx_rings[t_idx];
 366         struct iavf_hw *hw = &adapter->hw;
 367
 368         tx_ring->q_vector = q_vector;
 369         tx_ring->next = q_vector->tx.ring;
 370         tx_ring->vsi = &adapter->vsi;
 371         q_vector->tx.ring = tx_ring;
 372         q_vector->tx.count++;
 373         q_vector->tx.next_update = jiffies + 1;
 374         q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting);
 375         q_vector->num_ringpairs++;
 376         wr32(hw, IAVF_VFINT_ITRN1(IAVF_TX_ITR, q_vector->reg_idx),
 377              q_vector->tx.target_itr >> 1);
 378         q_vector->tx.current_itr = q_vector->tx.target_itr;
 379 }
 380
 381 /**
 382  * iavf_map_rings_to_vectors - Maps descriptor rings to vectors
 383  * @adapter: board private structure to initialize
 384  *
 385  * This function maps descriptor rings to the queue-specific vectors
 386  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
 387  * one vector per ring/queue, but on a constrained vector budget, we
 388  * group the rings as "efficiently" as possible.  You would add new
 389  * mapping configurations in here.
 390  **/
 391 static void iavf_map_rings_to_vectors(struct iavf_adapter *adapter)
 392 {
 393         int rings_remaining = adapter->num_active_queues;
 394         int ridx = 0, vidx = 0;
 395         int q_vectors;
 396
 397         q_vectors = adapter->num_msix_vectors - NONQ_VECS;
 398
 399         for (; ridx < rings_remaining; ridx++) {
 400                 iavf_map_vector_to_rxq(adapter, vidx, ridx);
 401                 iavf_map_vector_to_txq(adapter, vidx, ridx);
 402
 403                 /* In the case where we have more queues than vectors, continue
 404                  * round-robin on vectors until all queues are mapped.
 405                  */
 406                 if (++vidx >= q_vectors)
 407                         vidx = 0;
 408         }
 409
 410         adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS;
 411 }
 412
 413 /**
 414  * iavf_irq_affinity_notify - Callback for affinity changes
 415  * @notify: context as to what irq was changed
 416  * @mask: the new affinity mask
 417  *
 418  * This is a callback function used by the irq_set_affinity_notifier function
 419  * so that we may register to receive changes to the irq affinity masks.
 420  **/
 421 static void iavf_irq_affinity_notify(struct irq_affinity_notify *notify,
 422                                      const cpumask_t *mask)
 423 {
 424         struct iavf_q_vector *q_vector =
 425                 container_of(notify, struct iavf_q_vector, affinity_notify);
 426
 427         cpumask_copy(&q_vector->affinity_mask, mask);
 428 }
 429
 430 /**
 431  * iavf_irq_affinity_release - Callback for affinity notifier release
 432  * @ref: internal core kernel usage
 433  *
 434  * This is a callback function used by the irq_set_affinity_notifier function
 435  * to inform the current notification subscriber that they will no longer
 436  * receive notifications.
 437  **/
 438 static void iavf_irq_affinity_release(struct kref *ref) {}
 439
 440 /**
 441  * iavf_request_traffic_irqs - Initialize MSI-X interrupts
 442  * @adapter: board private structure
 443  * @basename: device basename
 444  *
 445  * Allocates MSI-X vectors for tx and rx handling, and requests
 446  * interrupts from the kernel.
 447  **/
 448 static int
 449 iavf_request_traffic_irqs(struct iavf_adapter *adapter, char *basename)
 450 {
 451         unsigned int vector, q_vectors;
 452         unsigned int rx_int_idx = 0, tx_int_idx = 0;
 453         int irq_num, err;
 454         int cpu;
 455
 456         iavf_irq_disable(adapter);
 457         /* Decrement for Other and TCP Timer vectors */
 458         q_vectors = adapter->num_msix_vectors - NONQ_VECS;
 459
 460         for (vector = 0; vector < q_vectors; vector++) {
 461                 struct iavf_q_vector *q_vector = &adapter->q_vectors[vector];
 462
 463                 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
 464
 465                 if (q_vector->tx.ring && q_vector->rx.ring) {
 466                         snprintf(q_vector->name, sizeof(q_vector->name),
 467                                  "iavf-%s-TxRx-%u", basename, rx_int_idx++);
 468                         tx_int_idx++;
 469                 } else if (q_vector->rx.ring) {
 470                         snprintf(q_vector->name, sizeof(q_vector->name),
 471                                  "iavf-%s-rx-%u", basename, rx_int_idx++);
 472                 } else if (q_vector->tx.ring) {
 473                         snprintf(q_vector->name, sizeof(q_vector->name),
 474                                  "iavf-%s-tx-%u", basename, tx_int_idx++);
 475                 } else {
 476                         /* skip this unused q_vector */
 477                         continue;
 478                 }
 479                 err = request_irq(irq_num,
 480                                   iavf_msix_clean_rings,
 481                                   0,
 482                                   q_vector->name,
 483                                   q_vector);
 484                 if (err) {
 485                         dev_info(&adapter->pdev->dev,
 486                                  "Request_irq failed, error: %d\n", err);
 487                         goto free_queue_irqs;
 488                 }
 489                 /* register for affinity change notifications */
 490                 q_vector->affinity_notify.notify = iavf_irq_affinity_notify;
 491                 q_vector->affinity_notify.release =
 492                                                    iavf_irq_affinity_release;
 493                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
 494                 /* Spread the IRQ affinity hints across online CPUs. Note that
 495                  * get_cpu_mask returns a mask with a permanent lifetime so
 496                  * it's safe to use as a hint for irq_update_affinity_hint.
 497                  */
 498                 cpu = cpumask_local_spread(q_vector->v_idx, -1);
 499                 irq_update_affinity_hint(irq_num, get_cpu_mask(cpu));
 500         }
 501
 502         return 0;
 503
 504 free_queue_irqs:
 505         while (vector) {
 506                 vector--;
 507                 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
 508                 irq_set_affinity_notifier(irq_num, NULL);
 509                 irq_update_affinity_hint(irq_num, NULL);
 510                 free_irq(irq_num, &adapter->q_vectors[vector]);
 511         }
 512         return err;
 513 }
 514
 515 /**
 516  * iavf_request_misc_irq - Initialize MSI-X interrupts
 517  * @adapter: board private structure
 518  *
 519  * Allocates MSI-X vector 0 and requests interrupts from the kernel. This
 520  * vector is only for the admin queue, and stays active even when the netdev
 521  * is closed.
 522  **/
 523 static int iavf_request_misc_irq(struct iavf_adapter *adapter)
 524 {
 525         struct net_device *netdev = adapter->netdev;
 526         int err;
 527
 528         snprintf(adapter->misc_vector_name,
 529                  sizeof(adapter->misc_vector_name) - 1, "iavf-%s:mbx",
 530                  dev_name(&adapter->pdev->dev));
 531         err = request_irq(adapter->msix_entries[0].vector,
 532                           &iavf_msix_aq, 0,
 533                           adapter->misc_vector_name, netdev);
 534         if (err) {
 535                 dev_err(&adapter->pdev->dev,
 536                         "request_irq for %s failed: %d\n",
 537                         adapter->misc_vector_name, err);
 538                 free_irq(adapter->msix_entries[0].vector, netdev);
 539         }
 540         return err;
 541 }
 542
 543 /**
 544  * iavf_free_traffic_irqs - Free MSI-X interrupts
 545  * @adapter: board private structure
 546  *
 547  * Frees all MSI-X vectors other than 0.
 548  **/
 549 static void iavf_free_traffic_irqs(struct iavf_adapter *adapter)
 550 {
 551         int vector, irq_num, q_vectors;
 552
 553         if (!adapter->msix_entries)
 554                 return;
 555
 556         q_vectors = adapter->num_msix_vectors - NONQ_VECS;
 557
 558         for (vector = 0; vector < q_vectors; vector++) {
 559                 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector;
 560                 irq_set_affinity_notifier(irq_num, NULL);
 561                 irq_update_affinity_hint(irq_num, NULL);
 562                 free_irq(irq_num, &adapter->q_vectors[vector]);
 563         }
 564 }
 565
 566 /**
 567  * iavf_free_misc_irq - Free MSI-X miscellaneous vector
 568  * @adapter: board private structure
 569  *
 570  * Frees MSI-X vector 0.
 571  **/
 572 static void iavf_free_misc_irq(struct iavf_adapter *adapter)
 573 {
 574         struct net_device *netdev = adapter->netdev;
 575
 576         if (!adapter->msix_entries)
 577                 return;
 578
 579         free_irq(adapter->msix_entries[0].vector, netdev);
 580 }
 581
 582 /**
 583  * iavf_configure_tx - Configure Transmit Unit after Reset
 584  * @adapter: board private structure
 585  *
 586  * Configure the Tx unit of the MAC after a reset.
 587  **/
 588 static void iavf_configure_tx(struct iavf_adapter *adapter)
 589 {
 590         struct iavf_hw *hw = &adapter->hw;
 591         int i;
 592
 593         for (i = 0; i < adapter->num_active_queues; i++)
 594                 adapter->tx_rings[i].tail = hw->hw_addr + IAVF_QTX_TAIL1(i);
 595 }
 596
 597 /**
 598  * iavf_configure_rx - Configure Receive Unit after Reset
 599  * @adapter: board private structure
 600  *
 601  * Configure the Rx unit of the MAC after a reset.
 602  **/
 603 static void iavf_configure_rx(struct iavf_adapter *adapter)
 604 {
 605         unsigned int rx_buf_len = IAVF_RXBUFFER_2048;
 606         struct iavf_hw *hw = &adapter->hw;
 607         int i;
 608
 609         /* Legacy Rx will always default to a 2048 buffer size. */
 610 #if (PAGE_SIZE < 8192)
 611         if (!(adapter->flags & IAVF_FLAG_LEGACY_RX)) {
 612                 struct net_device *netdev = adapter->netdev;
 613
 614                 /* For jumbo frames on systems with 4K pages we have to use
 615                  * an order 1 page, so we might as well increase the size
 616                  * of our Rx buffer to make better use of the available space
 617                  */
 618                 rx_buf_len = IAVF_RXBUFFER_3072;
 619
 620                 /* We use a 1536 buffer size for configurations with
 621                  * standard Ethernet mtu.  On x86 this gives us enough room
 622                  * for shared info and 192 bytes of padding.
 623                  */
 624                 if (!IAVF_2K_TOO_SMALL_WITH_PADDING &&
 625                     (netdev->mtu <= ETH_DATA_LEN))
 626                         rx_buf_len = IAVF_RXBUFFER_1536 - NET_IP_ALIGN;
 627         }
 628 #endif
 629
 630         for (i = 0; i < adapter->num_active_queues; i++) {
 631                 adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i);
 632                 adapter->rx_rings[i].rx_buf_len = rx_buf_len;
 633
 634                 if (adapter->flags & IAVF_FLAG_LEGACY_RX)
 635                         clear_ring_build_skb_enabled(&adapter->rx_rings[i]);
 636                 else
 637                         set_ring_build_skb_enabled(&adapter->rx_rings[i]);
 638         }
 639 }
 640
 641 /**
 642  * iavf_find_vlan - Search filter list for specific vlan filter
 643  * @adapter: board private structure
 644  * @vlan: vlan tag
 645  *
 646  * Returns ptr to the filter object or NULL. Must be called while holding the
 647  * mac_vlan_list_lock.
 648  **/
 649 static struct
 650 iavf_vlan_filter *iavf_find_vlan(struct iavf_adapter *adapter,
 651                                  struct iavf_vlan vlan)
 652 {
 653         struct iavf_vlan_filter *f;
 654
 655         list_for_each_entry(f, &adapter->vlan_filter_list, list) {
 656                 if (f->vlan.vid == vlan.vid &&
 657                     f->vlan.tpid == vlan.tpid)
 658                         return f;
 659         }
 660
 661         return NULL;
 662 }
 663
 664 /**
 665  * iavf_add_vlan - Add a vlan filter to the list
 666  * @adapter: board private structure
 667  * @vlan: VLAN tag
 668  *
 669  * Returns ptr to the filter object or NULL when no memory available.
 670  **/
 671 static struct
 672 iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter,
 673                                 struct iavf_vlan vlan)
 674 {
 675         struct iavf_vlan_filter *f = NULL;
 676
 677         spin_lock_bh(&adapter->mac_vlan_list_lock);
 678
 679         f = iavf_find_vlan(adapter, vlan);
 680         if (!f) {
 681                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
 682                 if (!f)
 683                         goto clearout;
 684
 685                 f->vlan = vlan;
 686
 687                 list_add_tail(&f->list, &adapter->vlan_filter_list);
 688                 f->add = true;
 689                 adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER;
 690         }
 691
 692 clearout:
 693         spin_unlock_bh(&adapter->mac_vlan_list_lock);
 694         return f;
 695 }
 696
 697 /**
 698  * iavf_del_vlan - Remove a vlan filter from the list
 699  * @adapter: board private structure
 700  * @vlan: VLAN tag
 701  **/
 702 static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan)
 703 {
 704         struct iavf_vlan_filter *f;
 705
 706         spin_lock_bh(&adapter->mac_vlan_list_lock);
 707
 708         f = iavf_find_vlan(adapter, vlan);
 709         if (f) {
 710                 f->remove = true;
 711                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
 712         }
 713
 714         spin_unlock_bh(&adapter->mac_vlan_list_lock);
 715 }
 716
 717 /**
 718  * iavf_restore_filters
 719  * @adapter: board private structure
 720  *
 721  * Restore existing non MAC filters when VF netdev comes back up
 722  **/
 723 static void iavf_restore_filters(struct iavf_adapter *adapter)
 724 {
 725         u16 vid;
 726
 727         /* re-add all VLAN filters */
 728         for_each_set_bit(vid, adapter->vsi.active_cvlans, VLAN_N_VID)
 729                 iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021Q));
 730
 731         for_each_set_bit(vid, adapter->vsi.active_svlans, VLAN_N_VID)
 732                 iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021AD));
 733 }
 734
 735 /**
 736  * iavf_get_num_vlans_added - get number of VLANs added
 737  * @adapter: board private structure
 738  */
 739 static u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter)
 740 {
 741         return bitmap_weight(adapter->vsi.active_cvlans, VLAN_N_VID) +
 742                 bitmap_weight(adapter->vsi.active_svlans, VLAN_N_VID);
 743 }
 744
 745 /**
 746  * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF
 747  * @adapter: board private structure
 748  *
 749  * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN,
 750  * do not impose a limit as that maintains current behavior and for
 751  * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF.
 752  **/
 753 static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter)
 754 {
 755         /* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has
 756          * never been a limit on the VF driver side
 757          */
 758         if (VLAN_ALLOWED(adapter))
 759                 return VLAN_N_VID;
 760         else if (VLAN_V2_ALLOWED(adapter))
 761                 return adapter->vlan_v2_caps.filtering.max_filters;
 762
 763         return 0;
 764 }
 765
 766 /**
 767  * iavf_max_vlans_added - check if maximum VLANs allowed already exist
 768  * @adapter: board private structure
 769  **/
 770 static bool iavf_max_vlans_added(struct iavf_adapter *adapter)
 771 {
 772         if (iavf_get_num_vlans_added(adapter) <
 773             iavf_get_max_vlans_allowed(adapter))
 774                 return false;
 775
 776         return true;
 777 }
 778
 779 /**
 780  * iavf_vlan_rx_add_vid - Add a VLAN filter to a device
 781  * @netdev: network device struct
 782  * @proto: unused protocol data
 783  * @vid: VLAN tag
 784  **/
 785 static int iavf_vlan_rx_add_vid(struct net_device *netdev,
 786                                 __always_unused __be16 proto, u16 vid)
 787 {
 788         struct iavf_adapter *adapter = netdev_priv(netdev);
 789
 790         if (!VLAN_FILTERING_ALLOWED(adapter))
 791                 return -EIO;
 792
 793         if (iavf_max_vlans_added(adapter)) {
 794                 netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n",
 795                            iavf_get_max_vlans_allowed(adapter));
 796                 return -EIO;
 797         }
 798
 799         if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))))
 800                 return -ENOMEM;
 801
 802         if (proto == cpu_to_be16(ETH_P_8021Q))
 803                 set_bit(vid, adapter->vsi.active_cvlans);
 804         else
 805                 set_bit(vid, adapter->vsi.active_svlans);
 806
 807         return 0;
 808 }
 809
 810 /**
 811  * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device
 812  * @netdev: network device struct
 813  * @proto: unused protocol data
 814  * @vid: VLAN tag
 815  **/
 816 static int iavf_vlan_rx_kill_vid(struct net_device *netdev,
 817                                  __always_unused __be16 proto, u16 vid)
 818 {
 819         struct iavf_adapter *adapter = netdev_priv(netdev);
 820
 821         iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)));
 822         if (proto == cpu_to_be16(ETH_P_8021Q))
 823                 clear_bit(vid, adapter->vsi.active_cvlans);
 824         else
 825                 clear_bit(vid, adapter->vsi.active_svlans);
 826
 827         return 0;
 828 }
 829
 830 /**
 831  * iavf_find_filter - Search filter list for specific mac filter
 832  * @adapter: board private structure
 833  * @macaddr: the MAC address
 834  *
 835  * Returns ptr to the filter object or NULL. Must be called while holding the
 836  * mac_vlan_list_lock.
 837  **/
 838 static struct
 839 iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter,
 840                                   const u8 *macaddr)
 841 {
 842         struct iavf_mac_filter *f;
 843
 844         if (!macaddr)
 845                 return NULL;
 846
 847         list_for_each_entry(f, &adapter->mac_filter_list, list) {
 848                 if (ether_addr_equal(macaddr, f->macaddr))
 849                         return f;
 850         }
 851         return NULL;
 852 }
 853
 854 /**
 855  * iavf_add_filter - Add a mac filter to the filter list
 856  * @adapter: board private structure
 857  * @macaddr: the MAC address
 858  *
 859  * Returns ptr to the filter object or NULL when no memory available.
 860  **/
 861 struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter,
 862                                         const u8 *macaddr)
 863 {
 864         struct iavf_mac_filter *f;
 865
 866         if (!macaddr)
 867                 return NULL;
 868
 869         f = iavf_find_filter(adapter, macaddr);
 870         if (!f) {
 871                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
 872                 if (!f)
 873                         return f;
 874
 875                 ether_addr_copy(f->macaddr, macaddr);
 876
 877                 list_add_tail(&f->list, &adapter->mac_filter_list);
 878                 f->add = true;
 879                 f->is_new_mac = true;
 880                 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
 881         } else {
 882                 f->remove = false;
 883         }
 884
 885         return f;
 886 }
 887
 888 /**
 889  * iavf_set_mac - NDO callback to set port mac address
 890  * @netdev: network interface device structure
 891  * @p: pointer to an address structure
 892  *
 893  * Returns 0 on success, negative on failure
 894  **/
 895 static int iavf_set_mac(struct net_device *netdev, void *p)
 896 {
 897         struct iavf_adapter *adapter = netdev_priv(netdev);
 898         struct iavf_hw *hw = &adapter->hw;
 899         struct iavf_mac_filter *f;
 900         struct sockaddr *addr = p;
 901
 902         if (!is_valid_ether_addr(addr->sa_data))
 903                 return -EADDRNOTAVAIL;
 904
 905         if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
 906                 return 0;
 907
 908         spin_lock_bh(&adapter->mac_vlan_list_lock);
 909
 910         f = iavf_find_filter(adapter, hw->mac.addr);
 911         if (f) {
 912                 f->remove = true;
 913                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
 914         }
 915
 916         f = iavf_add_filter(adapter, addr->sa_data);
 917
 918         spin_unlock_bh(&adapter->mac_vlan_list_lock);
 919
 920         if (f) {
 921                 ether_addr_copy(hw->mac.addr, addr->sa_data);
 922         }
 923
 924         return (f == NULL) ? -ENOMEM : 0;
 925 }
 926
 927 /**
 928  * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address
 929  * @netdev: the netdevice
 930  * @addr: address to add
 931  *
 932  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
 933  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
 934  */
 935 static int iavf_addr_sync(struct net_device *netdev, const u8 *addr)
 936 {
 937         struct iavf_adapter *adapter = netdev_priv(netdev);
 938
 939         if (iavf_add_filter(adapter, addr))
 940                 return 0;
 941         else
 942                 return -ENOMEM;
 943 }
 944
 945 /**
 946  * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
 947  * @netdev: the netdevice
 948  * @addr: address to add
 949  *
 950  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
 951  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
 952  */
 953 static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr)
 954 {
 955         struct iavf_adapter *adapter = netdev_priv(netdev);
 956         struct iavf_mac_filter *f;
 957
 958         /* Under some circumstances, we might receive a request to delete
 959          * our own device address from our uc list. Because we store the
 960          * device address in the VSI's MAC/VLAN filter list, we need to ignore
 961          * such requests and not delete our device address from this list.
 962          */
 963         if (ether_addr_equal(addr, netdev->dev_addr))
 964                 return 0;
 965
 966         f = iavf_find_filter(adapter, addr);
 967         if (f) {
 968                 f->remove = true;
 969                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;
 970         }
 971         return 0;
 972 }
 973
 974 /**
 975  * iavf_set_rx_mode - NDO callback to set the netdev filters
 976  * @netdev: network interface device structure
 977  **/
 978 static void iavf_set_rx_mode(struct net_device *netdev)
 979 {
 980         struct iavf_adapter *adapter = netdev_priv(netdev);
 981
 982         spin_lock_bh(&adapter->mac_vlan_list_lock);
 983         __dev_uc_sync(netdev, iavf_addr_sync, iavf_addr_unsync);
 984         __dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync);
 985         spin_unlock_bh(&adapter->mac_vlan_list_lock);
 986
 987         if (netdev->flags & IFF_PROMISC &&
 988             !(adapter->flags & IAVF_FLAG_PROMISC_ON))
 989                 adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_PROMISC;
 990         else if (!(netdev->flags & IFF_PROMISC) &&
 991                  adapter->flags & IAVF_FLAG_PROMISC_ON)
 992                 adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_PROMISC;
 993
 994         if (netdev->flags & IFF_ALLMULTI &&
 995             !(adapter->flags & IAVF_FLAG_ALLMULTI_ON))
 996                 adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_ALLMULTI;
 997         else if (!(netdev->flags & IFF_ALLMULTI) &&
 998                  adapter->flags & IAVF_FLAG_ALLMULTI_ON)
 999                 adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_ALLMULTI;
1000 }
1001
1002 /**
1003  * iavf_napi_enable_all - enable NAPI on all queue vectors
1004  * @adapter: board private structure
1005  **/
1006 static void iavf_napi_enable_all(struct iavf_adapter *adapter)
1007 {
1008         int q_idx;
1009         struct iavf_q_vector *q_vector;
1010         int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1011
1012         for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1013                 struct napi_struct *napi;
1014
1015                 q_vector = &adapter->q_vectors[q_idx];
1016                 napi = &q_vector->napi;
1017                 napi_enable(napi);
1018         }
1019 }
1020
1021 /**
1022  * iavf_napi_disable_all - disable NAPI on all queue vectors
1023  * @adapter: board private structure
1024  **/
1025 static void iavf_napi_disable_all(struct iavf_adapter *adapter)
1026 {
1027         int q_idx;
1028         struct iavf_q_vector *q_vector;
1029         int q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1030
1031         for (q_idx = 0; q_idx < q_vectors; q_idx++) {
1032                 q_vector = &adapter->q_vectors[q_idx];
1033                 napi_disable(&q_vector->napi);
1034         }
1035 }
1036
1037 /**
1038  * iavf_configure - set up transmit and receive data structures
1039  * @adapter: board private structure
1040  **/
1041 static void iavf_configure(struct iavf_adapter *adapter)
1042 {
1043         struct net_device *netdev = adapter->netdev;
1044         int i;
1045
1046         iavf_set_rx_mode(netdev);
1047
1048         iavf_configure_tx(adapter);
1049         iavf_configure_rx(adapter);
1050         adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES;
1051
1052         for (i = 0; i < adapter->num_active_queues; i++) {
1053                 struct iavf_ring *ring = &adapter->rx_rings[i];
1054
1055                 iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring));
1056         }
1057 }
1058
1059 /**
1060  * iavf_up_complete - Finish the last steps of bringing up a connection
1061  * @adapter: board private structure
1062  *
1063  * Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock.
1064  **/
1065 static void iavf_up_complete(struct iavf_adapter *adapter)
1066 {
1067         iavf_change_state(adapter, __IAVF_RUNNING);
1068         clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
1069
1070         iavf_napi_enable_all(adapter);
1071
1072         adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES;
1073         if (CLIENT_ENABLED(adapter))
1074                 adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_OPEN;
1075         mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
1076 }
1077
1078 /**
1079  * iavf_down - Shutdown the connection processing
1080  * @adapter: board private structure
1081  *
1082  * Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock.
1083  **/
1084 void iavf_down(struct iavf_adapter *adapter)
1085 {
1086         struct net_device *netdev = adapter->netdev;
1087         struct iavf_vlan_filter *vlf;
1088         struct iavf_cloud_filter *cf;
1089         struct iavf_fdir_fltr *fdir;
1090         struct iavf_mac_filter *f;
1091         struct iavf_adv_rss *rss;
1092
1093         if (adapter->state <= __IAVF_DOWN_PENDING)
1094                 return;
1095
1096         netif_carrier_off(netdev);
1097         netif_tx_disable(netdev);
1098         adapter->link_up = false;
1099         iavf_napi_disable_all(adapter);
1100         iavf_irq_disable(adapter);
1101
1102         spin_lock_bh(&adapter->mac_vlan_list_lock);
1103
1104         /* clear the sync flag on all filters */
1105         __dev_uc_unsync(adapter->netdev, NULL);
1106         __dev_mc_unsync(adapter->netdev, NULL);
1107
1108         /* remove all MAC filters */
1109         list_for_each_entry(f, &adapter->mac_filter_list, list) {
1110                 f->remove = true;
1111         }
1112
1113         /* remove all VLAN filters */
1114         list_for_each_entry(vlf, &adapter->vlan_filter_list, list) {
1115                 vlf->remove = true;
1116         }
1117
1118         spin_unlock_bh(&adapter->mac_vlan_list_lock);
1119
1120         /* remove all cloud filters */
1121         spin_lock_bh(&adapter->cloud_filter_list_lock);
1122         list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
1123                 cf->del = true;
1124         }
1125         spin_unlock_bh(&adapter->cloud_filter_list_lock);
1126
1127         /* remove all Flow Director filters */
1128         spin_lock_bh(&adapter->fdir_fltr_lock);
1129         list_for_each_entry(fdir, &adapter->fdir_list_head, list) {
1130                 fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST;
1131         }
1132         spin_unlock_bh(&adapter->fdir_fltr_lock);
1133
1134         /* remove all advance RSS configuration */
1135         spin_lock_bh(&adapter->adv_rss_lock);
1136         list_for_each_entry(rss, &adapter->adv_rss_list_head, list)
1137                 rss->state = IAVF_ADV_RSS_DEL_REQUEST;
1138         spin_unlock_bh(&adapter->adv_rss_lock);
1139
1140         if (!(adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)) {
1141                 /* cancel any current operation */
1142                 adapter->current_op = VIRTCHNL_OP_UNKNOWN;
1143                 /* Schedule operations to close down the HW. Don't wait
1144                  * here for this to complete. The watchdog is still running
1145                  * and it will take care of this.
1146                  */
1147                 adapter->aq_required = IAVF_FLAG_AQ_DEL_MAC_FILTER;
1148                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER;
1149                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
1150                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER;
1151                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG;
1152                 adapter->aq_required |= IAVF_FLAG_AQ_DISABLE_QUEUES;
1153         }
1154
1155         mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
1156 }
1157
1158 /**
1159  * iavf_acquire_msix_vectors - Setup the MSIX capability
1160  * @adapter: board private structure
1161  * @vectors: number of vectors to request
1162  *
1163  * Work with the OS to set up the MSIX vectors needed.
1164  *
1165  * Returns 0 on success, negative on failure
1166  **/
1167 static int
1168 iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors)
1169 {
1170         int err, vector_threshold;
1171
1172         /* We'll want at least 3 (vector_threshold):
1173          * 0) Other (Admin Queue and link, mostly)
1174          * 1) TxQ[0] Cleanup
1175          * 2) RxQ[0] Cleanup
1176          */
1177         vector_threshold = MIN_MSIX_COUNT;
1178
1179         /* The more we get, the more we will assign to Tx/Rx Cleanup
1180          * for the separate queues...where Rx Cleanup >= Tx Cleanup.
1181          * Right now, we simply care about how many we'll get; we'll
1182          * set them up later while requesting irq's.
1183          */
1184         err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
1185                                     vector_threshold, vectors);
1186         if (err < 0) {
1187                 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n");
1188                 kfree(adapter->msix_entries);
1189                 adapter->msix_entries = NULL;
1190                 return err;
1191         }
1192
1193         /* Adjust for only the vectors we'll use, which is minimum
1194          * of max_msix_q_vectors + NONQ_VECS, or the number of
1195          * vectors we were allocated.
1196          */
1197         adapter->num_msix_vectors = err;
1198         return 0;
1199 }
1200
1201 /**
1202  * iavf_free_queues - Free memory for all rings
1203  * @adapter: board private structure to initialize
1204  *
1205  * Free all of the memory associated with queue pairs.
1206  **/
1207 static void iavf_free_queues(struct iavf_adapter *adapter)
1208 {
1209         if (!adapter->vsi_res)
1210                 return;
1211         adapter->num_active_queues = 0;
1212         kfree(adapter->tx_rings);
1213         adapter->tx_rings = NULL;
1214         kfree(adapter->rx_rings);
1215         adapter->rx_rings = NULL;
1216 }
1217
1218 /**
1219  * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload
1220  * @adapter: board private structure
1221  *
1222  * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or
1223  * stripped in certain descriptor fields. Instead of checking the offload
1224  * capability bits in the hot path, cache the location the ring specific
1225  * flags.
1226  */
1227 void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter)
1228 {
1229         int i;
1230
1231         for (i = 0; i < adapter->num_active_queues; i++) {
1232                 struct iavf_ring *tx_ring = &adapter->tx_rings[i];
1233                 struct iavf_ring *rx_ring = &adapter->rx_rings[i];
1234
1235                 /* prevent multiple L2TAG bits being set after VFR */
1236                 tx_ring->flags &=
1237                         ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
1238                           IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2);
1239                 rx_ring->flags &=
1240                         ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 |
1241                           IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2);
1242
1243                 if (VLAN_ALLOWED(adapter)) {
1244                         tx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
1245                         rx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
1246                 } else if (VLAN_V2_ALLOWED(adapter)) {
1247                         struct virtchnl_vlan_supported_caps *stripping_support;
1248                         struct virtchnl_vlan_supported_caps *insertion_support;
1249
1250                         stripping_support =
1251                                 &adapter->vlan_v2_caps.offloads.stripping_support;
1252                         insertion_support =
1253                                 &adapter->vlan_v2_caps.offloads.insertion_support;
1254
1255                         if (stripping_support->outer) {
1256                                 if (stripping_support->outer &
1257                                     VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
1258                                         rx_ring->flags |=
1259                                                 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
1260                                 else if (stripping_support->outer &
1261                                          VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2)
1262                                         rx_ring->flags |=
1263                                                 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2;
1264                         } else if (stripping_support->inner) {
1265                                 if (stripping_support->inner &
1266                                     VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
1267                                         rx_ring->flags |=
1268                                                 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
1269                                 else if (stripping_support->inner &
1270                                          VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2)
1271                                         rx_ring->flags |=
1272                                                 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2;
1273                         }
1274
1275                         if (insertion_support->outer) {
1276                                 if (insertion_support->outer &
1277                                     VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
1278                                         tx_ring->flags |=
1279                                                 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
1280                                 else if (insertion_support->outer &
1281                                          VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2)
1282                                         tx_ring->flags |=
1283                                                 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2;
1284                         } else if (insertion_support->inner) {
1285                                 if (insertion_support->inner &
1286                                     VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1)
1287                                         tx_ring->flags |=
1288                                                 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1;
1289                                 else if (insertion_support->inner &
1290                                          VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2)
1291                                         tx_ring->flags |=
1292                                                 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2;
1293                         }
1294                 }
1295         }
1296 }
1297
1298 /**
1299  * iavf_alloc_queues - Allocate memory for all rings
1300  * @adapter: board private structure to initialize
1301  *
1302  * We allocate one ring per queue at run-time since we don't know the
1303  * number of queues at compile-time.  The polling_netdev array is
1304  * intended for Multiqueue, but should work fine with a single queue.
1305  **/
1306 static int iavf_alloc_queues(struct iavf_adapter *adapter)
1307 {
1308         int i, num_active_queues;
1309
1310         /* If we're in reset reallocating queues we don't actually know yet for
1311          * certain the PF gave us the number of queues we asked for but we'll
1312          * assume it did.  Once basic reset is finished we'll confirm once we
1313          * start negotiating config with PF.
1314          */
1315         if (adapter->num_req_queues)
1316                 num_active_queues = adapter->num_req_queues;
1317         else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
1318                  adapter->num_tc)
1319                 num_active_queues = adapter->ch_config.total_qps;
1320         else
1321                 num_active_queues = min_t(int,
1322                                           adapter->vsi_res->num_queue_pairs,
1323                                           (int)(num_online_cpus()));
1324
1325
1326         adapter->tx_rings = kcalloc(num_active_queues,
1327                                     sizeof(struct iavf_ring), GFP_KERNEL);
1328         if (!adapter->tx_rings)
1329                 goto err_out;
1330         adapter->rx_rings = kcalloc(num_active_queues,
1331                                     sizeof(struct iavf_ring), GFP_KERNEL);
1332         if (!adapter->rx_rings)
1333                 goto err_out;
1334
1335         for (i = 0; i < num_active_queues; i++) {
1336                 struct iavf_ring *tx_ring;
1337                 struct iavf_ring *rx_ring;
1338
1339                 tx_ring = &adapter->tx_rings[i];
1340
1341                 tx_ring->queue_index = i;
1342                 tx_ring->netdev = adapter->netdev;
1343                 tx_ring->dev = &adapter->pdev->dev;
1344                 tx_ring->count = adapter->tx_desc_count;
1345                 tx_ring->itr_setting = IAVF_ITR_TX_DEF;
1346                 if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE)
1347                         tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR;
1348
1349                 rx_ring = &adapter->rx_rings[i];
1350                 rx_ring->queue_index = i;
1351                 rx_ring->netdev = adapter->netdev;
1352                 rx_ring->dev = &adapter->pdev->dev;
1353                 rx_ring->count = adapter->rx_desc_count;
1354                 rx_ring->itr_setting = IAVF_ITR_RX_DEF;
1355         }
1356
1357         adapter->num_active_queues = num_active_queues;
1358
1359         iavf_set_queue_vlan_tag_loc(adapter);
1360
1361         return 0;
1362
1363 err_out:
1364         iavf_free_queues(adapter);
1365         return -ENOMEM;
1366 }
1367
1368 /**
1369  * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported
1370  * @adapter: board private structure to initialize
1371  *
1372  * Attempt to configure the interrupts using the best available
1373  * capabilities of the hardware and the kernel.
1374  **/
1375 static int iavf_set_interrupt_capability(struct iavf_adapter *adapter)
1376 {
1377         int vector, v_budget;
1378         int pairs = 0;
1379         int err = 0;
1380
1381         if (!adapter->vsi_res) {
1382                 err = -EIO;
1383                 goto out;
1384         }
1385         pairs = adapter->num_active_queues;
1386
1387         /* It's easy to be greedy for MSI-X vectors, but it really doesn't do
1388          * us much good if we have more vectors than CPUs. However, we already
1389          * limit the total number of queues by the number of CPUs so we do not
1390          * need any further limiting here.
1391          */
1392         v_budget = min_t(int, pairs + NONQ_VECS,
1393                          (int)adapter->vf_res->max_vectors);
1394
1395         adapter->msix_entries = kcalloc(v_budget,
1396                                         sizeof(struct msix_entry), GFP_KERNEL);
1397         if (!adapter->msix_entries) {
1398                 err = -ENOMEM;
1399                 goto out;
1400         }
1401
1402         for (vector = 0; vector < v_budget; vector++)
1403                 adapter->msix_entries[vector].entry = vector;
1404
1405         err = iavf_acquire_msix_vectors(adapter, v_budget);
1406
1407 out:
1408         netif_set_real_num_rx_queues(adapter->netdev, pairs);
1409         netif_set_real_num_tx_queues(adapter->netdev, pairs);
1410         return err;
1411 }
1412
1413 /**
1414  * iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands
1415  * @adapter: board private structure
1416  *
1417  * Return 0 on success, negative on failure
1418  **/
1419 static int iavf_config_rss_aq(struct iavf_adapter *adapter)
1420 {
1421         struct iavf_aqc_get_set_rss_key_data *rss_key =
1422                 (struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key;
1423         struct iavf_hw *hw = &adapter->hw;
1424         int ret = 0;
1425
1426         if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) {
1427                 /* bail because we already have a command pending */
1428                 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n",
1429                         adapter->current_op);
1430                 return -EBUSY;
1431         }
1432
1433         ret = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key);
1434         if (ret) {
1435                 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n",
1436                         iavf_stat_str(hw, ret),
1437                         iavf_aq_str(hw, hw->aq.asq_last_status));
1438                 return ret;
1439
1440         }
1441
1442         ret = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false,
1443                                   adapter->rss_lut, adapter->rss_lut_size);
1444         if (ret) {
1445                 dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n",
1446                         iavf_stat_str(hw, ret),
1447                         iavf_aq_str(hw, hw->aq.asq_last_status));
1448         }
1449
1450         return ret;
1451
1452 }
1453
1454 /**
1455  * iavf_config_rss_reg - Configure RSS keys and lut by writing registers
1456  * @adapter: board private structure
1457  *
1458  * Returns 0 on success, negative on failure
1459  **/
1460 static int iavf_config_rss_reg(struct iavf_adapter *adapter)
1461 {
1462         struct iavf_hw *hw = &adapter->hw;
1463         u32 *dw;
1464         u16 i;
1465
1466         dw = (u32 *)adapter->rss_key;
1467         for (i = 0; i <= adapter->rss_key_size / 4; i++)
1468                 wr32(hw, IAVF_VFQF_HKEY(i), dw[i]);
1469
1470         dw = (u32 *)adapter->rss_lut;
1471         for (i = 0; i <= adapter->rss_lut_size / 4; i++)
1472                 wr32(hw, IAVF_VFQF_HLUT(i), dw[i]);
1473
1474         iavf_flush(hw);
1475
1476         return 0;
1477 }
1478
1479 /**
1480  * iavf_config_rss - Configure RSS keys and lut
1481  * @adapter: board private structure
1482  *
1483  * Returns 0 on success, negative on failure
1484  **/
1485 int iavf_config_rss(struct iavf_adapter *adapter)
1486 {
1487
1488         if (RSS_PF(adapter)) {
1489                 adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT |
1490                                         IAVF_FLAG_AQ_SET_RSS_KEY;
1491                 return 0;
1492         } else if (RSS_AQ(adapter)) {
1493                 return iavf_config_rss_aq(adapter);
1494         } else {
1495                 return iavf_config_rss_reg(adapter);
1496         }
1497 }
1498
1499 /**
1500  * iavf_fill_rss_lut - Fill the lut with default values
1501  * @adapter: board private structure
1502  **/
1503 static void iavf_fill_rss_lut(struct iavf_adapter *adapter)
1504 {
1505         u16 i;
1506
1507         for (i = 0; i < adapter->rss_lut_size; i++)
1508                 adapter->rss_lut[i] = i % adapter->num_active_queues;
1509 }
1510
1511 /**
1512  * iavf_init_rss - Prepare for RSS
1513  * @adapter: board private structure
1514  *
1515  * Return 0 on success, negative on failure
1516  **/
1517 static int iavf_init_rss(struct iavf_adapter *adapter)
1518 {
1519         struct iavf_hw *hw = &adapter->hw;
1520         int ret;
1521
1522         if (!RSS_PF(adapter)) {
1523                 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */
1524                 if (adapter->vf_res->vf_cap_flags &
1525                     VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2)
1526                         adapter->hena = IAVF_DEFAULT_RSS_HENA_EXPANDED;
1527                 else
1528                         adapter->hena = IAVF_DEFAULT_RSS_HENA;
1529
1530                 wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->hena);
1531                 wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->hena >> 32));
1532         }
1533
1534         iavf_fill_rss_lut(adapter);
1535         netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size);
1536         ret = iavf_config_rss(adapter);
1537
1538         return ret;
1539 }
1540
1541 /**
1542  * iavf_alloc_q_vectors - Allocate memory for interrupt vectors
1543  * @adapter: board private structure to initialize
1544  *
1545  * We allocate one q_vector per queue interrupt.  If allocation fails we
1546  * return -ENOMEM.
1547  **/
1548 static int iavf_alloc_q_vectors(struct iavf_adapter *adapter)
1549 {
1550         int q_idx = 0, num_q_vectors;
1551         struct iavf_q_vector *q_vector;
1552
1553         num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1554         adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector),
1555                                      GFP_KERNEL);
1556         if (!adapter->q_vectors)
1557                 return -ENOMEM;
1558
1559         for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1560                 q_vector = &adapter->q_vectors[q_idx];
1561                 q_vector->adapter = adapter;
1562                 q_vector->vsi = &adapter->vsi;
1563                 q_vector->v_idx = q_idx;
1564                 q_vector->reg_idx = q_idx;
1565                 cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
1566                 netif_napi_add(adapter->netdev, &q_vector->napi,
1567                                iavf_napi_poll, NAPI_POLL_WEIGHT);
1568         }
1569
1570         return 0;
1571 }
1572
1573 /**
1574  * iavf_free_q_vectors - Free memory allocated for interrupt vectors
1575  * @adapter: board private structure to initialize
1576  *
1577  * This function frees the memory allocated to the q_vectors.  In addition if
1578  * NAPI is enabled it will delete any references to the NAPI struct prior
1579  * to freeing the q_vector.
1580  **/
1581 static void iavf_free_q_vectors(struct iavf_adapter *adapter)
1582 {
1583         int q_idx, num_q_vectors;
1584         int napi_vectors;
1585
1586         if (!adapter->q_vectors)
1587                 return;
1588
1589         num_q_vectors = adapter->num_msix_vectors - NONQ_VECS;
1590         napi_vectors = adapter->num_active_queues;
1591
1592         for (q_idx = 0; q_idx < num_q_vectors; q_idx++) {
1593                 struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx];
1594
1595                 if (q_idx < napi_vectors)
1596                         netif_napi_del(&q_vector->napi);
1597         }
1598         kfree(adapter->q_vectors);
1599         adapter->q_vectors = NULL;
1600 }
1601
1602 /**
1603  * iavf_reset_interrupt_capability - Reset MSIX setup
1604  * @adapter: board private structure
1605  *
1606  **/
1607 void iavf_reset_interrupt_capability(struct iavf_adapter *adapter)
1608 {
1609         if (!adapter->msix_entries)
1610                 return;
1611
1612         pci_disable_msix(adapter->pdev);
1613         kfree(adapter->msix_entries);
1614         adapter->msix_entries = NULL;
1615 }
1616
1617 /**
1618  * iavf_init_interrupt_scheme - Determine if MSIX is supported and init
1619  * @adapter: board private structure to initialize
1620  *
1621  **/
1622 int iavf_init_interrupt_scheme(struct iavf_adapter *adapter)
1623 {
1624         int err;
1625
1626         err = iavf_alloc_queues(adapter);
1627         if (err) {
1628                 dev_err(&adapter->pdev->dev,
1629                         "Unable to allocate memory for queues\n");
1630                 goto err_alloc_queues;
1631         }
1632
1633         rtnl_lock();
1634         err = iavf_set_interrupt_capability(adapter);
1635         rtnl_unlock();
1636         if (err) {
1637                 dev_err(&adapter->pdev->dev,
1638                         "Unable to setup interrupt capabilities\n");
1639                 goto err_set_interrupt;
1640         }
1641
1642         err = iavf_alloc_q_vectors(adapter);
1643         if (err) {
1644                 dev_err(&adapter->pdev->dev,
1645                         "Unable to allocate memory for queue vectors\n");
1646                 goto err_alloc_q_vectors;
1647         }
1648
1649         /* If we've made it so far while ADq flag being ON, then we haven't
1650          * bailed out anywhere in middle. And ADq isn't just enabled but actual
1651          * resources have been allocated in the reset path.
1652          * Now we can truly claim that ADq is enabled.
1653          */
1654         if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
1655             adapter->num_tc)
1656                 dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created",
1657                          adapter->num_tc);
1658
1659         dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u",
1660                  (adapter->num_active_queues > 1) ? "Enabled" : "Disabled",
1661                  adapter->num_active_queues);
1662
1663         return 0;
1664 err_alloc_q_vectors:
1665         iavf_reset_interrupt_capability(adapter);
1666 err_set_interrupt:
1667         iavf_free_queues(adapter);
1668 err_alloc_queues:
1669         return err;
1670 }
1671
1672 /**
1673  * iavf_free_rss - Free memory used by RSS structs
1674  * @adapter: board private structure
1675  **/
1676 static void iavf_free_rss(struct iavf_adapter *adapter)
1677 {
1678         kfree(adapter->rss_key);
1679         adapter->rss_key = NULL;
1680
1681         kfree(adapter->rss_lut);
1682         adapter->rss_lut = NULL;
1683 }
1684
1685 /**
1686  * iavf_reinit_interrupt_scheme - Reallocate queues and vectors
1687  * @adapter: board private structure
1688  *
1689  * Returns 0 on success, negative on failure
1690  **/
1691 static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter)
1692 {
1693         struct net_device *netdev = adapter->netdev;
1694         int err;
1695
1696         if (netif_running(netdev))
1697                 iavf_free_traffic_irqs(adapter);
1698         iavf_free_misc_irq(adapter);
1699         iavf_reset_interrupt_capability(adapter);
1700         iavf_free_q_vectors(adapter);
1701         iavf_free_queues(adapter);
1702
1703         err =  iavf_init_interrupt_scheme(adapter);
1704         if (err)
1705                 goto err;
1706
1707         netif_tx_stop_all_queues(netdev);
1708
1709         err = iavf_request_misc_irq(adapter);
1710         if (err)
1711                 goto err;
1712
1713         set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
1714
1715         iavf_map_rings_to_vectors(adapter);
1716 err:
1717         return err;
1718 }
1719
1720 /**
1721  * iavf_process_aq_command - process aq_required flags
1722  * and sends aq command
1723  * @adapter: pointer to iavf adapter structure
1724  *
1725  * Returns 0 on success
1726  * Returns error code if no command was sent
1727  * or error code if the command failed.
1728  **/
1729 static int iavf_process_aq_command(struct iavf_adapter *adapter)
1730 {
1731         if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG)
1732                 return iavf_send_vf_config_msg(adapter);
1733         if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS)
1734                 return iavf_send_vf_offload_vlan_v2_msg(adapter);
1735         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) {
1736                 iavf_disable_queues(adapter);
1737                 return 0;
1738         }
1739
1740         if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) {
1741                 iavf_map_queues(adapter);
1742                 return 0;
1743         }
1744
1745         if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) {
1746                 iavf_add_ether_addrs(adapter);
1747                 return 0;
1748         }
1749
1750         if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) {
1751                 iavf_add_vlans(adapter);
1752                 return 0;
1753         }
1754
1755         if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) {
1756                 iavf_del_ether_addrs(adapter);
1757                 return 0;
1758         }
1759
1760         if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) {
1761                 iavf_del_vlans(adapter);
1762                 return 0;
1763         }
1764
1765         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) {
1766                 iavf_enable_vlan_stripping(adapter);
1767                 return 0;
1768         }
1769
1770         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) {
1771                 iavf_disable_vlan_stripping(adapter);
1772                 return 0;
1773         }
1774
1775         if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) {
1776                 iavf_configure_queues(adapter);
1777                 return 0;
1778         }
1779
1780         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) {
1781                 iavf_enable_queues(adapter);
1782                 return 0;
1783         }
1784
1785         if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) {
1786                 /* This message goes straight to the firmware, not the
1787                  * PF, so we don't have to set current_op as we will
1788                  * not get a response through the ARQ.
1789                  */
1790                 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS;
1791                 return 0;
1792         }
1793         if (adapter->aq_required & IAVF_FLAG_AQ_GET_HENA) {
1794                 iavf_get_hena(adapter);
1795                 return 0;
1796         }
1797         if (adapter->aq_required & IAVF_FLAG_AQ_SET_HENA) {
1798                 iavf_set_hena(adapter);
1799                 return 0;
1800         }
1801         if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) {
1802                 iavf_set_rss_key(adapter);
1803                 return 0;
1804         }
1805         if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) {
1806                 iavf_set_rss_lut(adapter);
1807                 return 0;
1808         }
1809
1810         if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_PROMISC) {
1811                 iavf_set_promiscuous(adapter, FLAG_VF_UNICAST_PROMISC |
1812                                        FLAG_VF_MULTICAST_PROMISC);
1813                 return 0;
1814         }
1815
1816         if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_ALLMULTI) {
1817                 iavf_set_promiscuous(adapter, FLAG_VF_MULTICAST_PROMISC);
1818                 return 0;
1819         }
1820         if ((adapter->aq_required & IAVF_FLAG_AQ_RELEASE_PROMISC) ||
1821             (adapter->aq_required & IAVF_FLAG_AQ_RELEASE_ALLMULTI)) {
1822                 iavf_set_promiscuous(adapter, 0);
1823                 return 0;
1824         }
1825
1826         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) {
1827                 iavf_enable_channels(adapter);
1828                 return 0;
1829         }
1830
1831         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) {
1832                 iavf_disable_channels(adapter);
1833                 return 0;
1834         }
1835         if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
1836                 iavf_add_cloud_filter(adapter);
1837                 return 0;
1838         }
1839
1840         if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
1841                 iavf_del_cloud_filter(adapter);
1842                 return 0;
1843         }
1844         if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) {
1845                 iavf_del_cloud_filter(adapter);
1846                 return 0;
1847         }
1848         if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) {
1849                 iavf_add_cloud_filter(adapter);
1850                 return 0;
1851         }
1852         if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) {
1853                 iavf_add_fdir_filter(adapter);
1854                 return IAVF_SUCCESS;
1855         }
1856         if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) {
1857                 iavf_del_fdir_filter(adapter);
1858                 return IAVF_SUCCESS;
1859         }
1860         if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) {
1861                 iavf_add_adv_rss_cfg(adapter);
1862                 return 0;
1863         }
1864         if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) {
1865                 iavf_del_adv_rss_cfg(adapter);
1866                 return 0;
1867         }
1868         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) {
1869                 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q);
1870                 return 0;
1871         }
1872         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) {
1873                 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD);
1874                 return 0;
1875         }
1876         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) {
1877                 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q);
1878                 return 0;
1879         }
1880         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) {
1881                 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD);
1882                 return 0;
1883         }
1884         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) {
1885                 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q);
1886                 return 0;
1887         }
1888         if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) {
1889                 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD);
1890                 return 0;
1891         }
1892         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) {
1893                 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q);
1894                 return 0;
1895         }
1896         if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) {
1897                 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD);
1898                 return 0;
1899         }
1900
1901         if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) {
1902                 iavf_request_stats(adapter);
1903                 return 0;
1904         }
1905
1906         return -EAGAIN;
1907 }
1908
1909 /**
1910  * iavf_set_vlan_offload_features - set VLAN offload configuration
1911  * @adapter: board private structure
1912  * @prev_features: previous features used for comparison
1913  * @features: updated features used for configuration
1914  *
1915  * Set the aq_required bit(s) based on the requested features passed in to
1916  * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule
1917  * the watchdog if any changes are requested to expedite the request via
1918  * virtchnl.
1919  **/
1920 void
1921 iavf_set_vlan_offload_features(struct iavf_adapter *adapter,
1922                                netdev_features_t prev_features,
1923                                netdev_features_t features)
1924 {
1925         bool enable_stripping = true, enable_insertion = true;
1926         u16 vlan_ethertype = 0;
1927         u64 aq_required = 0;
1928
1929         /* keep cases separate because one ethertype for offloads can be
1930          * disabled at the same time as another is disabled, so check for an
1931          * enabled ethertype first, then check for disabled. Default to
1932          * ETH_P_8021Q so an ethertype is specified if disabling insertion and
1933          * stripping.
1934          */
1935         if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
1936                 vlan_ethertype = ETH_P_8021AD;
1937         else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
1938                 vlan_ethertype = ETH_P_8021Q;
1939         else if (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX))
1940                 vlan_ethertype = ETH_P_8021AD;
1941         else if (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX))
1942                 vlan_ethertype = ETH_P_8021Q;
1943         else
1944                 vlan_ethertype = ETH_P_8021Q;
1945
1946         if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX)))
1947                 enable_stripping = false;
1948         if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX)))
1949                 enable_insertion = false;
1950
1951         if (VLAN_ALLOWED(adapter)) {
1952                 /* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN
1953                  * stripping via virtchnl. VLAN insertion can be toggled on the
1954                  * netdev, but it doesn't require a virtchnl message
1955                  */
1956                 if (enable_stripping)
1957                         aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING;
1958                 else
1959                         aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING;
1960
1961         } else if (VLAN_V2_ALLOWED(adapter)) {
1962                 switch (vlan_ethertype) {
1963                 case ETH_P_8021Q:
1964                         if (enable_stripping)
1965                                 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING;
1966                         else
1967                                 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING;
1968
1969                         if (enable_insertion)
1970                                 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION;
1971                         else
1972                                 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION;
1973                         break;
1974                 case ETH_P_8021AD:
1975                         if (enable_stripping)
1976                                 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING;
1977                         else
1978                                 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING;
1979
1980                         if (enable_insertion)
1981                                 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION;
1982                         else
1983                                 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION;
1984                         break;
1985                 }
1986         }
1987
1988         if (aq_required) {
1989                 adapter->aq_required |= aq_required;
1990                 mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
1991         }
1992 }
1993
1994 /**
1995  * iavf_startup - first step of driver startup
1996  * @adapter: board private structure
1997  *
1998  * Function process __IAVF_STARTUP driver state.
1999  * When success the state is changed to __IAVF_INIT_VERSION_CHECK
2000  * when fails the state is changed to __IAVF_INIT_FAILED
2001  **/
2002 static void iavf_startup(struct iavf_adapter *adapter)
2003 {
2004         struct pci_dev *pdev = adapter->pdev;
2005         struct iavf_hw *hw = &adapter->hw;
2006         int err;
2007
2008         WARN_ON(adapter->state != __IAVF_STARTUP);
2009
2010         /* driver loaded, probe complete */
2011         adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
2012         adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
2013         err = iavf_set_mac_type(hw);
2014         if (err) {
2015                 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", err);
2016                 goto err;
2017         }
2018
2019         err = iavf_check_reset_complete(hw);
2020         if (err) {
2021                 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n",
2022                          err);
2023                 goto err;
2024         }
2025         hw->aq.num_arq_entries = IAVF_AQ_LEN;
2026         hw->aq.num_asq_entries = IAVF_AQ_LEN;
2027         hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
2028         hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE;
2029
2030         err = iavf_init_adminq(hw);
2031         if (err) {
2032                 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", err);
2033                 goto err;
2034         }
2035         err = iavf_send_api_ver(adapter);
2036         if (err) {
2037                 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", err);
2038                 iavf_shutdown_adminq(hw);
2039                 goto err;
2040         }
2041         iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK);
2042         return;
2043 err:
2044         iavf_change_state(adapter, __IAVF_INIT_FAILED);
2045 }
2046
2047 /**
2048  * iavf_init_version_check - second step of driver startup
2049  * @adapter: board private structure
2050  *
2051  * Function process __IAVF_INIT_VERSION_CHECK driver state.
2052  * When success the state is changed to __IAVF_INIT_GET_RESOURCES
2053  * when fails the state is changed to __IAVF_INIT_FAILED
2054  **/
2055 static void iavf_init_version_check(struct iavf_adapter *adapter)
2056 {
2057         struct pci_dev *pdev = adapter->pdev;
2058         struct iavf_hw *hw = &adapter->hw;
2059         int err = -EAGAIN;
2060
2061         WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK);
2062
2063         if (!iavf_asq_done(hw)) {
2064                 dev_err(&pdev->dev, "Admin queue command never completed\n");
2065                 iavf_shutdown_adminq(hw);
2066                 iavf_change_state(adapter, __IAVF_STARTUP);
2067                 goto err;
2068         }
2069
2070         /* aq msg sent, awaiting reply */
2071         err = iavf_verify_api_ver(adapter);
2072         if (err) {
2073                 if (err == IAVF_ERR_ADMIN_QUEUE_NO_WORK)
2074                         err = iavf_send_api_ver(adapter);
2075                 else
2076                         dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n",
2077                                 adapter->pf_version.major,
2078                                 adapter->pf_version.minor,
2079                                 VIRTCHNL_VERSION_MAJOR,
2080                                 VIRTCHNL_VERSION_MINOR);
2081                 goto err;
2082         }
2083         err = iavf_send_vf_config_msg(adapter);
2084         if (err) {
2085                 dev_err(&pdev->dev, "Unable to send config request (%d)\n",
2086                         err);
2087                 goto err;
2088         }
2089         iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES);
2090         return;
2091 err:
2092         iavf_change_state(adapter, __IAVF_INIT_FAILED);
2093 }
2094
2095 /**
2096  * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES
2097  * @adapter: board private structure
2098  */
2099 int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter)
2100 {
2101         int i, num_req_queues = adapter->num_req_queues;
2102         struct iavf_vsi *vsi = &adapter->vsi;
2103
2104         for (i = 0; i < adapter->vf_res->num_vsis; i++) {
2105                 if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV)
2106                         adapter->vsi_res = &adapter->vf_res->vsi_res[i];
2107         }
2108         if (!adapter->vsi_res) {
2109                 dev_err(&adapter->pdev->dev, "No LAN VSI found\n");
2110                 return -ENODEV;
2111         }
2112
2113         if (num_req_queues &&
2114             num_req_queues > adapter->vsi_res->num_queue_pairs) {
2115                 /* Problem.  The PF gave us fewer queues than what we had
2116                  * negotiated in our request.  Need a reset to see if we can't
2117                  * get back to a working state.
2118                  */
2119                 dev_err(&adapter->pdev->dev,
2120                         "Requested %d queues, but PF only gave us %d.\n",
2121                         num_req_queues,
2122                         adapter->vsi_res->num_queue_pairs);
2123                 adapter->flags |= IAVF_FLAG_REINIT_MSIX_NEEDED;
2124                 adapter->num_req_queues = adapter->vsi_res->num_queue_pairs;
2125                 iavf_schedule_reset(adapter);
2126
2127                 return -EAGAIN;
2128         }
2129         adapter->num_req_queues = 0;
2130         adapter->vsi.id = adapter->vsi_res->vsi_id;
2131
2132         adapter->vsi.back = adapter;
2133         adapter->vsi.base_vector = 1;
2134         adapter->vsi.work_limit = IAVF_DEFAULT_IRQ_WORK;
2135         vsi->netdev = adapter->netdev;
2136         vsi->qs_handle = adapter->vsi_res->qset_handle;
2137         if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) {
2138                 adapter->rss_key_size = adapter->vf_res->rss_key_size;
2139                 adapter->rss_lut_size = adapter->vf_res->rss_lut_size;
2140         } else {
2141                 adapter->rss_key_size = IAVF_HKEY_ARRAY_SIZE;
2142                 adapter->rss_lut_size = IAVF_HLUT_ARRAY_SIZE;
2143         }
2144
2145         return 0;
2146 }
2147
2148 /**
2149  * iavf_init_get_resources - third step of driver startup
2150  * @adapter: board private structure
2151  *
2152  * Function process __IAVF_INIT_GET_RESOURCES driver state and
2153  * finishes driver initialization procedure.
2154  * When success the state is changed to __IAVF_DOWN
2155  * when fails the state is changed to __IAVF_INIT_FAILED
2156  **/
2157 static void iavf_init_get_resources(struct iavf_adapter *adapter)
2158 {
2159         struct pci_dev *pdev = adapter->pdev;
2160         struct iavf_hw *hw = &adapter->hw;
2161         int err;
2162
2163         WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES);
2164         /* aq msg sent, awaiting reply */
2165         if (!adapter->vf_res) {
2166                 adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE,
2167                                           GFP_KERNEL);
2168                 if (!adapter->vf_res) {
2169                         err = -ENOMEM;
2170                         goto err;
2171                 }
2172         }
2173         err = iavf_get_vf_config(adapter);
2174         if (err == IAVF_ERR_ADMIN_QUEUE_NO_WORK) {
2175                 err = iavf_send_vf_config_msg(adapter);
2176                 goto err_alloc;
2177         } else if (err == IAVF_ERR_PARAM) {
2178                 /* We only get ERR_PARAM if the device is in a very bad
2179                  * state or if we've been disabled for previous bad
2180                  * behavior. Either way, we're done now.
2181                  */
2182                 iavf_shutdown_adminq(hw);
2183                 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n");
2184                 return;
2185         }
2186         if (err) {
2187                 dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err);
2188                 goto err_alloc;
2189         }
2190
2191         err = iavf_parse_vf_resource_msg(adapter);
2192         if (err)
2193                 goto err_alloc;
2194
2195         err = iavf_send_vf_offload_vlan_v2_msg(adapter);
2196         if (err == -EOPNOTSUPP) {
2197                 /* underlying PF doesn't support VIRTCHNL_VF_OFFLOAD_VLAN_V2, so
2198                  * go directly to finishing initialization
2199                  */
2200                 iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER);
2201                 return;
2202         } else if (err) {
2203                 dev_err(&pdev->dev, "Unable to send offload vlan v2 request (%d)\n",
2204                         err);
2205                 goto err_alloc;
2206         }
2207
2208         /* underlying PF supports VIRTCHNL_VF_OFFLOAD_VLAN_V2, so update the
2209          * state accordingly
2210          */
2211         iavf_change_state(adapter, __IAVF_INIT_GET_OFFLOAD_VLAN_V2_CAPS);
2212         return;
2213
2214 err_alloc:
2215         kfree(adapter->vf_res);
2216         adapter->vf_res = NULL;
2217 err:
2218         iavf_change_state(adapter, __IAVF_INIT_FAILED);
2219 }
2220
2221 /**
2222  * iavf_init_get_offload_vlan_v2_caps - part of driver startup
2223  * @adapter: board private structure
2224  *
2225  * Function processes __IAVF_INIT_GET_OFFLOAD_VLAN_V2_CAPS driver state if the
2226  * VF negotiates VIRTCHNL_VF_OFFLOAD_VLAN_V2. If VIRTCHNL_VF_OFFLOAD_VLAN_V2 is
2227  * not negotiated, then this state will never be entered.
2228  **/
2229 static void iavf_init_get_offload_vlan_v2_caps(struct iavf_adapter *adapter)
2230 {
2231         int ret;
2232
2233         WARN_ON(adapter->state != __IAVF_INIT_GET_OFFLOAD_VLAN_V2_CAPS);
2234
2235         memset(&adapter->vlan_v2_caps, 0, sizeof(adapter->vlan_v2_caps));
2236
2237         ret = iavf_get_vf_vlan_v2_caps(adapter);
2238         if (ret) {
2239                 if (ret == IAVF_ERR_ADMIN_QUEUE_NO_WORK)
2240                         iavf_send_vf_offload_vlan_v2_msg(adapter);
2241                 goto err;
2242         }
2243
2244         iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER);
2245         return;
2246 err:
2247         iavf_change_state(adapter, __IAVF_INIT_FAILED);
2248 }
2249
2250 /**
2251  * iavf_init_config_adapter - last part of driver startup
2252  * @adapter: board private structure
2253  *
2254  * After all the supported capabilities are negotiated, then the
2255  * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization.
2256  */
2257 static void iavf_init_config_adapter(struct iavf_adapter *adapter)
2258 {
2259         struct net_device *netdev = adapter->netdev;
2260         struct pci_dev *pdev = adapter->pdev;
2261         int err;
2262
2263         WARN_ON(adapter->state != __IAVF_INIT_CONFIG_ADAPTER);
2264
2265         if (iavf_process_config(adapter))
2266                 goto err;
2267
2268         adapter->current_op = VIRTCHNL_OP_UNKNOWN;
2269
2270         adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED;
2271
2272         netdev->netdev_ops = &iavf_netdev_ops;
2273         iavf_set_ethtool_ops(netdev);
2274         netdev->watchdog_timeo = 5 * HZ;
2275
2276         /* MTU range: 68 - 9710 */
2277         netdev->min_mtu = ETH_MIN_MTU;
2278         netdev->max_mtu = IAVF_MAX_RXBUFFER - IAVF_PACKET_HDR_PAD;
2279
2280         if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
2281                 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n",
2282                          adapter->hw.mac.addr);
2283                 eth_hw_addr_random(netdev);
2284                 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr);
2285         } else {
2286                 eth_hw_addr_set(netdev, adapter->hw.mac.addr);
2287                 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr);
2288         }
2289
2290         adapter->tx_desc_count = IAVF_DEFAULT_TXD;
2291         adapter->rx_desc_count = IAVF_DEFAULT_RXD;
2292         err = iavf_init_interrupt_scheme(adapter);
2293         if (err)
2294                 goto err_sw_init;
2295         iavf_map_rings_to_vectors(adapter);
2296         if (adapter->vf_res->vf_cap_flags &
2297                 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR)
2298                 adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE;
2299
2300         err = iavf_request_misc_irq(adapter);
2301         if (err)
2302                 goto err_sw_init;
2303
2304         netif_carrier_off(netdev);
2305         adapter->link_up = false;
2306
2307         /* set the semaphore to prevent any callbacks after device registration
2308          * up to time when state of driver will be set to __IAVF_DOWN
2309          */
2310         rtnl_lock();
2311         if (!adapter->netdev_registered) {
2312                 err = register_netdevice(netdev);
2313                 if (err) {
2314                         rtnl_unlock();
2315                         goto err_register;
2316                 }
2317         }
2318
2319         adapter->netdev_registered = true;
2320
2321         netif_tx_stop_all_queues(netdev);
2322         if (CLIENT_ALLOWED(adapter)) {
2323                 err = iavf_lan_add_device(adapter);
2324                 if (err)
2325                         dev_info(&pdev->dev, "Failed to add VF to client API service list: %d\n",
2326                                  err);
2327         }
2328         dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr);
2329         if (netdev->features & NETIF_F_GRO)
2330                 dev_info(&pdev->dev, "GRO is enabled\n");
2331
2332         iavf_change_state(adapter, __IAVF_DOWN);
2333         set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
2334         rtnl_unlock();
2335
2336         iavf_misc_irq_enable(adapter);
2337         wake_up(&adapter->down_waitqueue);
2338
2339         adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL);
2340         adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL);
2341         if (!adapter->rss_key || !adapter->rss_lut) {
2342                 err = -ENOMEM;
2343                 goto err_mem;
2344         }
2345         if (RSS_AQ(adapter))
2346                 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
2347         else
2348                 iavf_init_rss(adapter);
2349
2350         if (VLAN_V2_ALLOWED(adapter))
2351                 /* request initial VLAN offload settings */
2352                 iavf_set_vlan_offload_features(adapter, 0, netdev->features);
2353
2354         return;
2355 err_mem:
2356         iavf_free_rss(adapter);
2357 err_register:
2358         iavf_free_misc_irq(adapter);
2359 err_sw_init:
2360         iavf_reset_interrupt_capability(adapter);
2361 err:
2362         iavf_change_state(adapter, __IAVF_INIT_FAILED);
2363 }
2364
2365 /**
2366  * iavf_watchdog_task - Periodic call-back task
2367  * @work: pointer to work_struct
2368  **/
2369 static void iavf_watchdog_task(struct work_struct *work)
2370 {
2371         struct iavf_adapter *adapter = container_of(work,
2372                                                     struct iavf_adapter,
2373                                                     watchdog_task.work);
2374         struct iavf_hw *hw = &adapter->hw;
2375         u32 reg_val;
2376
2377         if (!mutex_trylock(&adapter->crit_lock)) {
2378                 if (adapter->state == __IAVF_REMOVE)
2379                         return;
2380
2381                 goto restart_watchdog;
2382         }
2383
2384         if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
2385                 iavf_change_state(adapter, __IAVF_COMM_FAILED);
2386
2387         if (adapter->flags & IAVF_FLAG_RESET_NEEDED) {
2388                 adapter->aq_required = 0;
2389                 adapter->current_op = VIRTCHNL_OP_UNKNOWN;
2390                 mutex_unlock(&adapter->crit_lock);
2391                 queue_work(iavf_wq, &adapter->reset_task);
2392                 return;
2393         }
2394
2395         switch (adapter->state) {
2396         case __IAVF_STARTUP:
2397                 iavf_startup(adapter);
2398                 mutex_unlock(&adapter->crit_lock);
2399                 queue_delayed_work(iavf_wq, &adapter->watchdog_task,
2400                                    msecs_to_jiffies(30));
2401                 return;
2402         case __IAVF_INIT_VERSION_CHECK:
2403                 iavf_init_version_check(adapter);
2404                 mutex_unlock(&adapter->crit_lock);
2405                 queue_delayed_work(iavf_wq, &adapter->watchdog_task,
2406                                    msecs_to_jiffies(30));
2407                 return;
2408         case __IAVF_INIT_GET_RESOURCES:
2409                 iavf_init_get_resources(adapter);
2410                 mutex_unlock(&adapter->crit_lock);
2411                 queue_delayed_work(iavf_wq, &adapter->watchdog_task,
2412                                    msecs_to_jiffies(1));
2413                 return;
2414         case __IAVF_INIT_GET_OFFLOAD_VLAN_V2_CAPS:
2415                 iavf_init_get_offload_vlan_v2_caps(adapter);
2416                 mutex_unlock(&adapter->crit_lock);
2417                 queue_delayed_work(iavf_wq, &adapter->watchdog_task,
2418                                    msecs_to_jiffies(1));
2419                 return;
2420         case __IAVF_INIT_CONFIG_ADAPTER:
2421                 iavf_init_config_adapter(adapter);
2422                 mutex_unlock(&adapter->crit_lock);
2423                 queue_delayed_work(iavf_wq, &adapter->watchdog_task,
2424                                    msecs_to_jiffies(1));
2425                 return;
2426         case __IAVF_INIT_FAILED:
2427                 if (test_bit(__IAVF_IN_REMOVE_TASK,
2428                              &adapter->crit_section)) {
2429                         /* Do not update the state and do not reschedule
2430                          * watchdog task, iavf_remove should handle this state
2431                          * as it can loop forever
2432                          */
2433                         mutex_unlock(&adapter->crit_lock);
2434                         return;
2435                 }
2436                 if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) {
2437                         dev_err(&adapter->pdev->dev,
2438                                 "Failed to communicate with PF; waiting before retry\n");
2439                         adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
2440                         iavf_shutdown_adminq(hw);
2441                         mutex_unlock(&adapter->crit_lock);
2442                         queue_delayed_work(iavf_wq,
2443                                            &adapter->watchdog_task, (5 * HZ));
2444                         return;
2445                 }
2446                 /* Try again from failed step*/
2447                 iavf_change_state(adapter, adapter->last_state);
2448                 mutex_unlock(&adapter->crit_lock);
2449                 queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ);
2450                 return;
2451         case __IAVF_COMM_FAILED:
2452                 if (test_bit(__IAVF_IN_REMOVE_TASK,
2453                              &adapter->crit_section)) {
2454                         /* Set state to __IAVF_INIT_FAILED and perform remove
2455                          * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task
2456                          * doesn't bring the state back to __IAVF_COMM_FAILED.
2457                          */
2458                         iavf_change_state(adapter, __IAVF_INIT_FAILED);
2459                         adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
2460                         mutex_unlock(&adapter->crit_lock);
2461                         return;
2462                 }
2463                 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
2464                           IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
2465                 if (reg_val == VIRTCHNL_VFR_VFACTIVE ||
2466                     reg_val == VIRTCHNL_VFR_COMPLETED) {
2467                         /* A chance for redemption! */
2468                         dev_err(&adapter->pdev->dev,
2469                                 "Hardware came out of reset. Attempting reinit.\n");
2470                         /* When init task contacts the PF and
2471                          * gets everything set up again, it'll restart the
2472                          * watchdog for us. Down, boy. Sit. Stay. Woof.
2473                          */
2474                         iavf_change_state(adapter, __IAVF_STARTUP);
2475                         adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED;
2476                 }
2477                 adapter->aq_required = 0;
2478                 adapter->current_op = VIRTCHNL_OP_UNKNOWN;
2479                 mutex_unlock(&adapter->crit_lock);
2480                 queue_delayed_work(iavf_wq,
2481                                    &adapter->watchdog_task,
2482                                    msecs_to_jiffies(10));
2483                 return;
2484         case __IAVF_RESETTING:
2485                 mutex_unlock(&adapter->crit_lock);
2486                 queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
2487                 return;
2488         case __IAVF_DOWN:
2489         case __IAVF_DOWN_PENDING:
2490         case __IAVF_TESTING:
2491         case __IAVF_RUNNING:
2492                 if (adapter->current_op) {
2493                         if (!iavf_asq_done(hw)) {
2494                                 dev_dbg(&adapter->pdev->dev,
2495                                         "Admin queue timeout\n");
2496                                 iavf_send_api_ver(adapter);
2497                         }
2498                 } else {
2499                         int ret = iavf_process_aq_command(adapter);
2500
2501                         /* An error will be returned if no commands were
2502                          * processed; use this opportunity to update stats
2503                          * if the error isn't -ENOTSUPP
2504                          */
2505                         if (ret && ret != -EOPNOTSUPP &&
2506                             adapter->state == __IAVF_RUNNING)
2507                                 iavf_request_stats(adapter);
2508                 }
2509                 if (adapter->state == __IAVF_RUNNING)
2510                         iavf_detect_recover_hung(&adapter->vsi);
2511                 break;
2512         case __IAVF_REMOVE:
2513         default:
2514                 mutex_unlock(&adapter->crit_lock);
2515                 return;
2516         }
2517
2518         /* check for hw reset */
2519         reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK;
2520         if (!reg_val) {
2521                 adapter->flags |= IAVF_FLAG_RESET_PENDING;
2522                 adapter->aq_required = 0;
2523                 adapter->current_op = VIRTCHNL_OP_UNKNOWN;
2524                 dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
2525                 queue_work(iavf_wq, &adapter->reset_task);
2526                 mutex_unlock(&adapter->crit_lock);
2527                 queue_delayed_work(iavf_wq,
2528                                    &adapter->watchdog_task, HZ * 2);
2529                 return;
2530         }
2531
2532         schedule_delayed_work(&adapter->client_task, msecs_to_jiffies(5));
2533         mutex_unlock(&adapter->crit_lock);
2534 restart_watchdog:
2535         if (adapter->state >= __IAVF_DOWN)
2536                 queue_work(iavf_wq, &adapter->adminq_task);
2537         if (adapter->aq_required)
2538                 queue_delayed_work(iavf_wq, &adapter->watchdog_task,
2539                                    msecs_to_jiffies(20));
2540         else
2541                 queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
2542 }
2543
2544 /**
2545  * iavf_disable_vf - disable VF
2546  * @adapter: board private structure
2547  *
2548  * Set communication failed flag and free all resources.
2549  * NOTE: This function is expected to be called with crit_lock being held.
2550  **/
2551 static void iavf_disable_vf(struct iavf_adapter *adapter)
2552 {
2553         struct iavf_mac_filter *f, *ftmp;
2554         struct iavf_vlan_filter *fv, *fvtmp;
2555         struct iavf_cloud_filter *cf, *cftmp;
2556
2557         adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
2558
2559         /* We don't use netif_running() because it may be true prior to
2560          * ndo_open() returning, so we can't assume it means all our open
2561          * tasks have finished, since we're not holding the rtnl_lock here.
2562          */
2563         if (adapter->state == __IAVF_RUNNING) {
2564                 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
2565                 netif_carrier_off(adapter->netdev);
2566                 netif_tx_disable(adapter->netdev);
2567                 adapter->link_up = false;
2568                 iavf_napi_disable_all(adapter);
2569                 iavf_irq_disable(adapter);
2570                 iavf_free_traffic_irqs(adapter);
2571                 iavf_free_all_tx_resources(adapter);
2572                 iavf_free_all_rx_resources(adapter);
2573         }
2574
2575         spin_lock_bh(&adapter->mac_vlan_list_lock);
2576
2577         /* Delete all of the filters */
2578         list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2579                 list_del(&f->list);
2580                 kfree(f);
2581         }
2582
2583         list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) {
2584                 list_del(&fv->list);
2585                 kfree(fv);
2586         }
2587
2588         spin_unlock_bh(&adapter->mac_vlan_list_lock);
2589
2590         spin_lock_bh(&adapter->cloud_filter_list_lock);
2591         list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) {
2592                 list_del(&cf->list);
2593                 kfree(cf);
2594                 adapter->num_cloud_filters--;
2595         }
2596         spin_unlock_bh(&adapter->cloud_filter_list_lock);
2597
2598         iavf_free_misc_irq(adapter);
2599         iavf_reset_interrupt_capability(adapter);
2600         iavf_free_q_vectors(adapter);
2601         iavf_free_queues(adapter);
2602         memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE);
2603         iavf_shutdown_adminq(&adapter->hw);
2604         adapter->netdev->flags &= ~IFF_UP;
2605         adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
2606         iavf_change_state(adapter, __IAVF_DOWN);
2607         wake_up(&adapter->down_waitqueue);
2608         dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n");
2609 }
2610
2611 /**
2612  * iavf_reset_task - Call-back task to handle hardware reset
2613  * @work: pointer to work_struct
2614  *
2615  * During reset we need to shut down and reinitialize the admin queue
2616  * before we can use it to communicate with the PF again. We also clear
2617  * and reinit the rings because that context is lost as well.
2618  **/
2619 static void iavf_reset_task(struct work_struct *work)
2620 {
2621         struct iavf_adapter *adapter = container_of(work,
2622                                                       struct iavf_adapter,
2623                                                       reset_task);
2624         struct virtchnl_vf_resource *vfres = adapter->vf_res;
2625         struct net_device *netdev = adapter->netdev;
2626         struct iavf_hw *hw = &adapter->hw;
2627         struct iavf_mac_filter *f, *ftmp;
2628         struct iavf_cloud_filter *cf;
2629         u32 reg_val;
2630         int i = 0, err;
2631         bool running;
2632
2633         /* When device is being removed it doesn't make sense to run the reset
2634          * task, just return in such a case.
2635          */
2636         if (!mutex_trylock(&adapter->crit_lock)) {
2637                 if (adapter->state != __IAVF_REMOVE)
2638                         queue_work(iavf_wq, &adapter->reset_task);
2639
2640                 return;
2641         }
2642
2643         while (!mutex_trylock(&adapter->client_lock))
2644                 usleep_range(500, 1000);
2645         if (CLIENT_ENABLED(adapter)) {
2646                 adapter->flags &= ~(IAVF_FLAG_CLIENT_NEEDS_OPEN |
2647                                     IAVF_FLAG_CLIENT_NEEDS_CLOSE |
2648                                     IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS |
2649                                     IAVF_FLAG_SERVICE_CLIENT_REQUESTED);
2650                 cancel_delayed_work_sync(&adapter->client_task);
2651                 iavf_notify_client_close(&adapter->vsi, true);
2652         }
2653         iavf_misc_irq_disable(adapter);
2654         if (adapter->flags & IAVF_FLAG_RESET_NEEDED) {
2655                 adapter->flags &= ~IAVF_FLAG_RESET_NEEDED;
2656                 /* Restart the AQ here. If we have been reset but didn't
2657                  * detect it, or if the PF had to reinit, our AQ will be hosed.
2658                  */
2659                 iavf_shutdown_adminq(hw);
2660                 iavf_init_adminq(hw);
2661                 iavf_request_reset(adapter);
2662         }
2663         adapter->flags |= IAVF_FLAG_RESET_PENDING;
2664
2665         /* poll until we see the reset actually happen */
2666         for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) {
2667                 reg_val = rd32(hw, IAVF_VF_ARQLEN1) &
2668                           IAVF_VF_ARQLEN1_ARQENABLE_MASK;
2669                 if (!reg_val)
2670                         break;
2671                 usleep_range(5000, 10000);
2672         }
2673         if (i == IAVF_RESET_WAIT_DETECTED_COUNT) {
2674                 dev_info(&adapter->pdev->dev, "Never saw reset\n");
2675                 goto continue_reset; /* act like the reset happened */
2676         }
2677
2678         /* wait until the reset is complete and the PF is responding to us */
2679         for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
2680                 /* sleep first to make sure a minimum wait time is met */
2681                 msleep(IAVF_RESET_WAIT_MS);
2682
2683                 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) &
2684                           IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
2685                 if (reg_val == VIRTCHNL_VFR_VFACTIVE)
2686                         break;
2687         }
2688
2689         pci_set_master(adapter->pdev);
2690         pci_restore_msi_state(adapter->pdev);
2691
2692         if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) {
2693                 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n",
2694                         reg_val);
2695                 iavf_disable_vf(adapter);
2696                 mutex_unlock(&adapter->client_lock);
2697                 mutex_unlock(&adapter->crit_lock);
2698                 return; /* Do not attempt to reinit. It's dead, Jim. */
2699         }
2700
2701 continue_reset:
2702         /* We don't use netif_running() because it may be true prior to
2703          * ndo_open() returning, so we can't assume it means all our open
2704          * tasks have finished, since we're not holding the rtnl_lock here.
2705          */
2706         running = adapter->state == __IAVF_RUNNING;
2707
2708         if (running) {
2709                 netdev->flags &= ~IFF_UP;
2710                 netif_carrier_off(netdev);
2711                 netif_tx_stop_all_queues(netdev);
2712                 adapter->link_up = false;
2713                 iavf_napi_disable_all(adapter);
2714         }
2715         iavf_irq_disable(adapter);
2716
2717         iavf_change_state(adapter, __IAVF_RESETTING);
2718         adapter->flags &= ~IAVF_FLAG_RESET_PENDING;
2719
2720         /* free the Tx/Rx rings and descriptors, might be better to just
2721          * re-use them sometime in the future
2722          */
2723         iavf_free_all_rx_resources(adapter);
2724         iavf_free_all_tx_resources(adapter);
2725
2726         adapter->flags |= IAVF_FLAG_QUEUES_DISABLED;
2727         /* kill and reinit the admin queue */
2728         iavf_shutdown_adminq(hw);
2729         adapter->current_op = VIRTCHNL_OP_UNKNOWN;
2730         err = iavf_init_adminq(hw);
2731         if (err)
2732                 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n",
2733                          err);
2734         adapter->aq_required = 0;
2735
2736         if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) ||
2737             (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) {
2738                 err = iavf_reinit_interrupt_scheme(adapter);
2739                 if (err)
2740                         goto reset_err;
2741         }
2742
2743         if (RSS_AQ(adapter)) {
2744                 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS;
2745         } else {
2746                 err = iavf_init_rss(adapter);
2747                 if (err)
2748                         goto reset_err;
2749         }
2750
2751         adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG;
2752         /* always set since VIRTCHNL_OP_GET_VF_RESOURCES has not been
2753          * sent/received yet, so VLAN_V2_ALLOWED() cannot is not reliable here,
2754          * however the VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS won't be sent until
2755          * VIRTCHNL_OP_GET_VF_RESOURCES and VIRTCHNL_VF_OFFLOAD_VLAN_V2 have
2756          * been successfully sent and negotiated
2757          */
2758         adapter->aq_required |= IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS;
2759         adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS;
2760
2761         spin_lock_bh(&adapter->mac_vlan_list_lock);
2762
2763         /* Delete filter for the current MAC address, it could have
2764          * been changed by the PF via administratively set MAC.
2765          * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES.
2766          */
2767         list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
2768                 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) {
2769                         list_del(&f->list);
2770                         kfree(f);
2771                 }
2772         }
2773         /* re-add all MAC filters */
2774         list_for_each_entry(f, &adapter->mac_filter_list, list) {
2775                 f->add = true;
2776         }
2777         spin_unlock_bh(&adapter->mac_vlan_list_lock);
2778
2779         /* check if TCs are running and re-add all cloud filters */
2780         spin_lock_bh(&adapter->cloud_filter_list_lock);
2781         if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) &&
2782             adapter->num_tc) {
2783                 list_for_each_entry(cf, &adapter->cloud_filter_list, list) {
2784                         cf->add = true;
2785                 }
2786         }
2787         spin_unlock_bh(&adapter->cloud_filter_list_lock);
2788
2789         adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
2790         adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
2791         iavf_misc_irq_enable(adapter);
2792
2793         mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2);
2794
2795         /* We were running when the reset started, so we need to restore some
2796          * state here.
2797          */
2798         if (running) {
2799                 /* allocate transmit descriptors */
2800                 err = iavf_setup_all_tx_resources(adapter);
2801                 if (err)
2802                         goto reset_err;
2803
2804                 /* allocate receive descriptors */
2805                 err = iavf_setup_all_rx_resources(adapter);
2806                 if (err)
2807                         goto reset_err;
2808
2809                 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) ||
2810                     (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) {
2811                         err = iavf_request_traffic_irqs(adapter, netdev->name);
2812                         if (err)
2813                                 goto reset_err;
2814
2815                         adapter->flags &= ~IAVF_FLAG_REINIT_MSIX_NEEDED;
2816                 }
2817
2818                 iavf_configure(adapter);
2819
2820                 /* iavf_up_complete() will switch device back
2821                  * to __IAVF_RUNNING
2822                  */
2823                 iavf_up_complete(adapter);
2824                 netdev->flags |= IFF_UP;
2825                 iavf_irq_enable(adapter, true);
2826         } else {
2827                 iavf_change_state(adapter, __IAVF_DOWN);
2828                 wake_up(&adapter->down_waitqueue);
2829         }
2830
2831         adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
2832
2833         mutex_unlock(&adapter->client_lock);
2834         mutex_unlock(&adapter->crit_lock);
2835
2836         return;
2837 reset_err:
2838         mutex_unlock(&adapter->client_lock);
2839         mutex_unlock(&adapter->crit_lock);
2840         if (running) {
2841                 iavf_change_state(adapter, __IAVF_RUNNING);
2842                 netdev->flags |= IFF_UP;
2843         }
2844         dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n");
2845         iavf_close(netdev);
2846 }
2847
2848 /**
2849  * iavf_adminq_task - worker thread to clean the admin queue
2850  * @work: pointer to work_struct containing our data
2851  **/
2852 static void iavf_adminq_task(struct work_struct *work)
2853 {
2854         struct iavf_adapter *adapter =
2855                 container_of(work, struct iavf_adapter, adminq_task);
2856         struct iavf_hw *hw = &adapter->hw;
2857         struct iavf_arq_event_info event;
2858         enum virtchnl_ops v_op;
2859         enum iavf_status ret, v_ret;
2860         u32 val, oldval;
2861         u16 pending;
2862
2863         if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
2864                 goto out;
2865
2866         if (!mutex_trylock(&adapter->crit_lock)) {
2867                 if (adapter->state == __IAVF_REMOVE)
2868                         return;
2869
2870                 queue_work(iavf_wq, &adapter->adminq_task);
2871                 goto out;
2872         }
2873
2874         event.buf_len = IAVF_MAX_AQ_BUF_SIZE;
2875         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
2876         if (!event.msg_buf)
2877                 goto out;
2878
2879         do {
2880                 ret = iavf_clean_arq_element(hw, &event, &pending);
2881                 v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high);
2882                 v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low);
2883
2884                 if (ret || !v_op)
2885                         break; /* No event to process or error cleaning ARQ */
2886
2887                 iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf,
2888                                          event.msg_len);
2889                 if (pending != 0)
2890                         memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE);
2891         } while (pending);
2892         mutex_unlock(&adapter->crit_lock);
2893
2894         if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES)) {
2895                 if (adapter->netdev_registered ||
2896                     !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) {
2897                         struct net_device *netdev = adapter->netdev;
2898
2899                         rtnl_lock();
2900                         netdev_update_features(netdev);
2901                         rtnl_unlock();
2902                         /* Request VLAN offload settings */
2903                         if (VLAN_V2_ALLOWED(adapter))
2904                                 iavf_set_vlan_offload_features
2905                                         (adapter, 0, netdev->features);
2906
2907                         iavf_set_queue_vlan_tag_loc(adapter);
2908                 }
2909
2910                 adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES;
2911         }
2912         if ((adapter->flags &
2913              (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) ||
2914             adapter->state == __IAVF_RESETTING)
2915                 goto freedom;
2916
2917         /* check for error indications */
2918         val = rd32(hw, hw->aq.arq.len);
2919         if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
2920                 goto freedom;
2921         oldval = val;
2922         if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) {
2923                 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n");
2924                 val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK;
2925         }
2926         if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) {
2927                 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n");
2928                 val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK;
2929         }
2930         if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) {
2931                 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n");
2932                 val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
2933         }
2934         if (oldval != val)
2935                 wr32(hw, hw->aq.arq.len, val);
2936
2937         val = rd32(hw, hw->aq.asq.len);
2938         oldval = val;
2939         if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
2940                 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
2941                 val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK;
2942         }
2943         if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) {
2944                 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n");
2945                 val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK;
2946         }
2947         if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
2948                 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n");
2949                 val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
2950         }
2951         if (oldval != val)
2952                 wr32(hw, hw->aq.asq.len, val);
2953
2954 freedom:
2955         kfree(event.msg_buf);
2956 out:
2957         /* re-enable Admin queue interrupt cause */
2958         iavf_misc_irq_enable(adapter);
2959 }
2960
2961 /**
2962  * iavf_client_task - worker thread to perform client work
2963  * @work: pointer to work_struct containing our data
2964  *
2965  * This task handles client interactions. Because client calls can be
2966  * reentrant, we can't handle them in the watchdog.
2967  **/
2968 static void iavf_client_task(struct work_struct *work)
2969 {
2970         struct iavf_adapter *adapter =
2971                 container_of(work, struct iavf_adapter, client_task.work);
2972
2973         /* If we can't get the client bit, just give up. We'll be rescheduled
2974          * later.
2975          */
2976
2977         if (!mutex_trylock(&adapter->client_lock))
2978                 return;
2979
2980         if (adapter->flags & IAVF_FLAG_SERVICE_CLIENT_REQUESTED) {
2981                 iavf_client_subtask(adapter);
2982                 adapter->flags &= ~IAVF_FLAG_SERVICE_CLIENT_REQUESTED;
2983                 goto out;
2984         }
2985         if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS) {
2986                 iavf_notify_client_l2_params(&adapter->vsi);
2987                 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS;
2988                 goto out;
2989         }
2990         if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_CLOSE) {
2991                 iavf_notify_client_close(&adapter->vsi, false);
2992                 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_CLOSE;
2993                 goto out;
2994         }
2995         if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_OPEN) {
2996                 iavf_notify_client_open(&adapter->vsi);
2997                 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_OPEN;
2998         }
2999 out:
3000         mutex_unlock(&adapter->client_lock);
3001 }
3002
3003 /**
3004  * iavf_free_all_tx_resources - Free Tx Resources for All Queues
3005  * @adapter: board private structure
3006  *
3007  * Free all transmit software resources
3008  **/
3009 void iavf_free_all_tx_resources(struct iavf_adapter *adapter)
3010 {
3011         int i;
3012
3013         if (!adapter->tx_rings)
3014                 return;
3015
3016         for (i = 0; i < adapter->num_active_queues; i++)
3017                 if (adapter->tx_rings[i].desc)
3018                         iavf_free_tx_resources(&adapter->tx_rings[i]);
3019 }
3020
3021 /**
3022  * iavf_setup_all_tx_resources - allocate all queues Tx resources
3023  * @adapter: board private structure
3024  *
3025  * If this function returns with an error, then it's possible one or
3026  * more of the rings is populated (while the rest are not).  It is the
3027  * callers duty to clean those orphaned rings.
3028  *
3029  * Return 0 on success, negative on failure
3030  **/
3031 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter)
3032 {
3033         int i, err = 0;
3034
3035         for (i = 0; i < adapter->num_active_queues; i++) {
3036                 adapter->tx_rings[i].count = adapter->tx_desc_count;
3037                 err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]);
3038                 if (!err)
3039                         continue;
3040                 dev_err(&adapter->pdev->dev,
3041                         "Allocation for Tx Queue %u failed\n", i);
3042                 break;
3043         }
3044
3045         return err;
3046 }
3047
3048 /**
3049  * iavf_setup_all_rx_resources - allocate all queues Rx resources
3050  * @adapter: board private structure
3051  *
3052  * If this function returns with an error, then it's possible one or
3053  * more of the rings is populated (while the rest are not).  It is the
3054  * callers duty to clean those orphaned rings.
3055  *
3056  * Return 0 on success, negative on failure
3057  **/
3058 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter)
3059 {
3060         int i, err = 0;
3061
3062         for (i = 0; i < adapter->num_active_queues; i++) {
3063                 adapter->rx_rings[i].count = adapter->rx_desc_count;
3064                 err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]);
3065                 if (!err)
3066                         continue;
3067                 dev_err(&adapter->pdev->dev,
3068                         "Allocation for Rx Queue %u failed\n", i);
3069                 break;
3070         }
3071         return err;
3072 }
3073
3074 /**
3075  * iavf_free_all_rx_resources - Free Rx Resources for All Queues
3076  * @adapter: board private structure
3077  *
3078  * Free all receive software resources
3079  **/
3080 void iavf_free_all_rx_resources(struct iavf_adapter *adapter)
3081 {
3082         int i;
3083
3084         if (!adapter->rx_rings)
3085                 return;
3086
3087         for (i = 0; i < adapter->num_active_queues; i++)
3088                 if (adapter->rx_rings[i].desc)
3089                         iavf_free_rx_resources(&adapter->rx_rings[i]);
3090 }
3091
3092 /**
3093  * iavf_validate_tx_bandwidth - validate the max Tx bandwidth
3094  * @adapter: board private structure
3095  * @max_tx_rate: max Tx bw for a tc
3096  **/
3097 static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter,
3098                                       u64 max_tx_rate)
3099 {
3100         int speed = 0, ret = 0;
3101
3102         if (ADV_LINK_SUPPORT(adapter)) {
3103                 if (adapter->link_speed_mbps < U32_MAX) {
3104                         speed = adapter->link_speed_mbps;
3105                         goto validate_bw;
3106                 } else {
3107                         dev_err(&adapter->pdev->dev, "Unknown link speed\n");
3108                         return -EINVAL;
3109                 }
3110         }
3111
3112         switch (adapter->link_speed) {
3113         case VIRTCHNL_LINK_SPEED_40GB:
3114                 speed = SPEED_40000;
3115                 break;
3116         case VIRTCHNL_LINK_SPEED_25GB:
3117                 speed = SPEED_25000;
3118                 break;
3119         case VIRTCHNL_LINK_SPEED_20GB:
3120                 speed = SPEED_20000;
3121                 break;
3122         case VIRTCHNL_LINK_SPEED_10GB:
3123                 speed = SPEED_10000;
3124                 break;
3125         case VIRTCHNL_LINK_SPEED_5GB:
3126                 speed = SPEED_5000;
3127                 break;
3128         case VIRTCHNL_LINK_SPEED_2_5GB:
3129                 speed = SPEED_2500;
3130                 break;
3131         case VIRTCHNL_LINK_SPEED_1GB:
3132                 speed = SPEED_1000;
3133                 break;
3134         case VIRTCHNL_LINK_SPEED_100MB:
3135                 speed = SPEED_100;
3136                 break;
3137         default:
3138                 break;
3139         }
3140
3141 validate_bw:
3142         if (max_tx_rate > speed) {
3143                 dev_err(&adapter->pdev->dev,
3144                         "Invalid tx rate specified\n");
3145                 ret = -EINVAL;
3146         }
3147
3148         return ret;
3149 }
3150
3151 /**
3152  * iavf_validate_ch_config - validate queue mapping info
3153  * @adapter: board private structure
3154  * @mqprio_qopt: queue parameters
3155  *
3156  * This function validates if the config provided by the user to
3157  * configure queue channels is valid or not. Returns 0 on a valid
3158  * config.
3159  **/
3160 static int iavf_validate_ch_config(struct iavf_adapter *adapter,
3161                                    struct tc_mqprio_qopt_offload *mqprio_qopt)
3162 {
3163         u64 total_max_rate = 0;
3164         int i, num_qps = 0;
3165         u64 tx_rate = 0;
3166         int ret = 0;
3167
3168         if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS ||
3169             mqprio_qopt->qopt.num_tc < 1)
3170                 return -EINVAL;
3171
3172         for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) {
3173                 if (!mqprio_qopt->qopt.count[i] ||
3174                     mqprio_qopt->qopt.offset[i] != num_qps)
3175                         return -EINVAL;
3176                 if (mqprio_qopt->min_rate[i]) {
3177                         dev_err(&adapter->pdev->dev,
3178                                 "Invalid min tx rate (greater than 0) specified\n");
3179                         return -EINVAL;
3180                 }
3181                 /*convert to Mbps */
3182                 tx_rate = div_u64(mqprio_qopt->max_rate[i],
3183                                   IAVF_MBPS_DIVISOR);
3184                 total_max_rate += tx_rate;
3185                 num_qps += mqprio_qopt->qopt.count[i];
3186         }
3187         if (num_qps > adapter->num_active_queues) {
3188                 dev_err(&adapter->pdev->dev,
3189                         "Cannot support requested number of queues\n");
3190                 return -EINVAL;
3191         }
3192
3193         ret = iavf_validate_tx_bandwidth(adapter, total_max_rate);
3194         return ret;
3195 }
3196
3197 /**
3198  * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes
3199  * @adapter: board private structure
3200  **/
3201 static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter)
3202 {
3203         struct iavf_cloud_filter *cf, *cftmp;
3204
3205         spin_lock_bh(&adapter->cloud_filter_list_lock);
3206         list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list,
3207                                  list) {
3208                 list_del(&cf->list);
3209                 kfree(cf);
3210                 adapter->num_cloud_filters--;
3211         }
3212         spin_unlock_bh(&adapter->cloud_filter_list_lock);
3213 }
3214
3215 /**
3216  * __iavf_setup_tc - configure multiple traffic classes
3217  * @netdev: network interface device structure
3218  * @type_data: tc offload data
3219  *
3220  * This function processes the config information provided by the
3221  * user to configure traffic classes/queue channels and packages the
3222  * information to request the PF to setup traffic classes.
3223  *
3224  * Returns 0 on success.
3225  **/
3226 static int __iavf_setup_tc(struct net_device *netdev, void *type_data)
3227 {
3228         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
3229         struct iavf_adapter *adapter = netdev_priv(netdev);
3230         struct virtchnl_vf_resource *vfres = adapter->vf_res;
3231         u8 num_tc = 0, total_qps = 0;
3232         int ret = 0, netdev_tc = 0;
3233         u64 max_tx_rate;
3234         u16 mode;
3235         int i;
3236
3237         num_tc = mqprio_qopt->qopt.num_tc;
3238         mode = mqprio_qopt->mode;
3239
3240         /* delete queue_channel */
3241         if (!mqprio_qopt->qopt.hw) {
3242                 if (adapter->ch_config.state == __IAVF_TC_RUNNING) {
3243                         /* reset the tc configuration */
3244                         netdev_reset_tc(netdev);
3245                         adapter->num_tc = 0;
3246                         netif_tx_stop_all_queues(netdev);
3247                         netif_tx_disable(netdev);
3248                         iavf_del_all_cloud_filters(adapter);
3249                         adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS;
3250                         goto exit;
3251                 } else {
3252                         return -EINVAL;
3253                 }
3254         }
3255
3256         /* add queue channel */
3257         if (mode == TC_MQPRIO_MODE_CHANNEL) {
3258                 if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) {
3259                         dev_err(&adapter->pdev->dev, "ADq not supported\n");
3260                         return -EOPNOTSUPP;
3261                 }
3262                 if (adapter->ch_config.state != __IAVF_TC_INVALID) {
3263                         dev_err(&adapter->pdev->dev, "TC configuration already exists\n");
3264                         return -EINVAL;
3265                 }
3266
3267                 ret = iavf_validate_ch_config(adapter, mqprio_qopt);
3268                 if (ret)
3269                         return ret;
3270                 /* Return if same TC config is requested */
3271                 if (adapter->num_tc == num_tc)
3272                         return 0;
3273                 adapter->num_tc = num_tc;
3274
3275                 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
3276                         if (i < num_tc) {
3277                                 adapter->ch_config.ch_info[i].count =
3278                                         mqprio_qopt->qopt.count[i];
3279                                 adapter->ch_config.ch_info[i].offset =
3280                                         mqprio_qopt->qopt.offset[i];
3281                                 total_qps += mqprio_qopt->qopt.count[i];
3282                                 max_tx_rate = mqprio_qopt->max_rate[i];
3283                                 /* convert to Mbps */
3284                                 max_tx_rate = div_u64(max_tx_rate,
3285                                                       IAVF_MBPS_DIVISOR);
3286                                 adapter->ch_config.ch_info[i].max_tx_rate =
3287                                         max_tx_rate;
3288                         } else {
3289                                 adapter->ch_config.ch_info[i].count = 1;
3290                                 adapter->ch_config.ch_info[i].offset = 0;
3291                         }
3292                 }
3293                 adapter->ch_config.total_qps = total_qps;
3294                 netif_tx_stop_all_queues(netdev);
3295                 netif_tx_disable(netdev);
3296                 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS;
3297                 netdev_reset_tc(netdev);
3298                 /* Report the tc mapping up the stack */
3299                 netdev_set_num_tc(adapter->netdev, num_tc);
3300                 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) {
3301                         u16 qcount = mqprio_qopt->qopt.count[i];
3302                         u16 qoffset = mqprio_qopt->qopt.offset[i];
3303
3304                         if (i < num_tc)
3305                                 netdev_set_tc_queue(netdev, netdev_tc++, qcount,
3306                                                     qoffset);
3307                 }
3308         }
3309 exit:
3310         return ret;
3311 }
3312
3313 /**
3314  * iavf_parse_cls_flower - Parse tc flower filters provided by kernel
3315  * @adapter: board private structure
3316  * @f: pointer to struct flow_cls_offload
3317  * @filter: pointer to cloud filter structure
3318  */
3319 static int iavf_parse_cls_flower(struct iavf_adapter *adapter,
3320                                  struct flow_cls_offload *f,
3321                                  struct iavf_cloud_filter *filter)
3322 {
3323         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3324         struct flow_dissector *dissector = rule->match.dissector;
3325         u16 n_proto_mask = 0;
3326         u16 n_proto_key = 0;
3327         u8 field_flags = 0;
3328         u16 addr_type = 0;
3329         u16 n_proto = 0;
3330         int i = 0;
3331         struct virtchnl_filter *vf = &filter->f;
3332
3333         if (dissector->used_keys &
3334             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
3335               BIT(FLOW_DISSECTOR_KEY_BASIC) |
3336               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
3337               BIT(FLOW_DISSECTOR_KEY_VLAN) |
3338               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
3339               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
3340               BIT(FLOW_DISSECTOR_KEY_PORTS) |
3341               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
3342                 dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%x\n",
3343                         dissector->used_keys);
3344                 return -EOPNOTSUPP;
3345         }
3346
3347         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
3348                 struct flow_match_enc_keyid match;
3349
3350                 flow_rule_match_enc_keyid(rule, &match);
3351                 if (match.mask->keyid != 0)
3352                         field_flags |= IAVF_CLOUD_FIELD_TEN_ID;
3353         }
3354
3355         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
3356                 struct flow_match_basic match;
3357
3358                 flow_rule_match_basic(rule, &match);
3359                 n_proto_key = ntohs(match.key->n_proto);
3360                 n_proto_mask = ntohs(match.mask->n_proto);
3361
3362                 if (n_proto_key == ETH_P_ALL) {
3363                         n_proto_key = 0;
3364                         n_proto_mask = 0;
3365                 }
3366                 n_proto = n_proto_key & n_proto_mask;
3367                 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6)
3368                         return -EINVAL;
3369                 if (n_proto == ETH_P_IPV6) {
3370                         /* specify flow type as TCP IPv6 */
3371                         vf->flow_type = VIRTCHNL_TCP_V6_FLOW;
3372                 }
3373
3374                 if (match.key->ip_proto != IPPROTO_TCP) {
3375                         dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n");
3376                         return -EINVAL;
3377                 }
3378         }
3379
3380         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
3381                 struct flow_match_eth_addrs match;
3382
3383                 flow_rule_match_eth_addrs(rule, &match);
3384
3385                 /* use is_broadcast and is_zero to check for all 0xf or 0 */
3386                 if (!is_zero_ether_addr(match.mask->dst)) {
3387                         if (is_broadcast_ether_addr(match.mask->dst)) {
3388                                 field_flags |= IAVF_CLOUD_FIELD_OMAC;
3389                         } else {
3390                                 dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n",
3391                                         match.mask->dst);
3392                                 return -EINVAL;
3393                         }
3394                 }
3395
3396                 if (!is_zero_ether_addr(match.mask->src)) {
3397                         if (is_broadcast_ether_addr(match.mask->src)) {
3398                                 field_flags |= IAVF_CLOUD_FIELD_IMAC;
3399                         } else {
3400                                 dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n",
3401                                         match.mask->src);
3402                                 return -EINVAL;
3403                         }
3404                 }
3405
3406                 if (!is_zero_ether_addr(match.key->dst))
3407                         if (is_valid_ether_addr(match.key->dst) ||
3408                             is_multicast_ether_addr(match.key->dst)) {
3409                                 /* set the mask if a valid dst_mac address */
3410                                 for (i = 0; i < ETH_ALEN; i++)
3411                                         vf->mask.tcp_spec.dst_mac[i] |= 0xff;
3412                                 ether_addr_copy(vf->data.tcp_spec.dst_mac,
3413                                                 match.key->dst);
3414                         }
3415
3416                 if (!is_zero_ether_addr(match.key->src))
3417                         if (is_valid_ether_addr(match.key->src) ||
3418                             is_multicast_ether_addr(match.key->src)) {
3419                                 /* set the mask if a valid dst_mac address */
3420                                 for (i = 0; i < ETH_ALEN; i++)
3421                                         vf->mask.tcp_spec.src_mac[i] |= 0xff;
3422                                 ether_addr_copy(vf->data.tcp_spec.src_mac,
3423                                                 match.key->src);
3424                 }
3425         }
3426
3427         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
3428                 struct flow_match_vlan match;
3429
3430                 flow_rule_match_vlan(rule, &match);
3431                 if (match.mask->vlan_id) {
3432                         if (match.mask->vlan_id == VLAN_VID_MASK) {
3433                                 field_flags |= IAVF_CLOUD_FIELD_IVLAN;
3434                         } else {
3435                                 dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n",
3436                                         match.mask->vlan_id);
3437                                 return -EINVAL;
3438                         }
3439                 }
3440                 vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff);
3441                 vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id);
3442         }
3443
3444         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
3445                 struct flow_match_control match;
3446
3447                 flow_rule_match_control(rule, &match);
3448                 addr_type = match.key->addr_type;
3449         }
3450
3451         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
3452                 struct flow_match_ipv4_addrs match;
3453
3454                 flow_rule_match_ipv4_addrs(rule, &match);
3455                 if (match.mask->dst) {
3456                         if (match.mask->dst == cpu_to_be32(0xffffffff)) {
3457                                 field_flags |= IAVF_CLOUD_FIELD_IIP;
3458                         } else {
3459                                 dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n",
3460                                         be32_to_cpu(match.mask->dst));
3461                                 return -EINVAL;
3462                         }
3463                 }
3464
3465                 if (match.mask->src) {
3466                         if (match.mask->src == cpu_to_be32(0xffffffff)) {
3467                                 field_flags |= IAVF_CLOUD_FIELD_IIP;
3468                         } else {
3469                                 dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n",
3470                                         be32_to_cpu(match.mask->dst));
3471                                 return -EINVAL;
3472                         }
3473                 }
3474
3475                 if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) {
3476                         dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n");
3477                         return -EINVAL;
3478                 }
3479                 if (match.key->dst) {
3480                         vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff);
3481                         vf->data.tcp_spec.dst_ip[0] = match.key->dst;
3482                 }
3483                 if (match.key->src) {
3484                         vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff);
3485                         vf->data.tcp_spec.src_ip[0] = match.key->src;
3486                 }
3487         }
3488
3489         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
3490                 struct flow_match_ipv6_addrs match;
3491
3492                 flow_rule_match_ipv6_addrs(rule, &match);
3493
3494                 /* validate mask, make sure it is not IPV6_ADDR_ANY */
3495                 if (ipv6_addr_any(&match.mask->dst)) {
3496                         dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n",
3497                                 IPV6_ADDR_ANY);
3498                         return -EINVAL;
3499                 }
3500
3501                 /* src and dest IPv6 address should not be LOOPBACK
3502                  * (0:0:0:0:0:0:0:1) which can be represented as ::1
3503                  */
3504                 if (ipv6_addr_loopback(&match.key->dst) ||
3505                     ipv6_addr_loopback(&match.key->src)) {
3506                         dev_err(&adapter->pdev->dev,
3507                                 "ipv6 addr should not be loopback\n");
3508                         return -EINVAL;
3509                 }
3510                 if (!ipv6_addr_any(&match.mask->dst) ||
3511                     !ipv6_addr_any(&match.mask->src))
3512                         field_flags |= IAVF_CLOUD_FIELD_IIP;
3513
3514                 for (i = 0; i < 4; i++)
3515                         vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff);
3516                 memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32,
3517                        sizeof(vf->data.tcp_spec.dst_ip));
3518                 for (i = 0; i < 4; i++)
3519                         vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff);
3520                 memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32,
3521                        sizeof(vf->data.tcp_spec.src_ip));
3522         }
3523         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
3524                 struct flow_match_ports match;
3525
3526                 flow_rule_match_ports(rule, &match);
3527                 if (match.mask->src) {
3528                         if (match.mask->src == cpu_to_be16(0xffff)) {
3529                                 field_flags |= IAVF_CLOUD_FIELD_IIP;
3530                         } else {
3531                                 dev_err(&adapter->pdev->dev, "Bad src port mask %u\n",
3532                                         be16_to_cpu(match.mask->src));
3533                                 return -EINVAL;
3534                         }
3535                 }
3536
3537                 if (match.mask->dst) {
3538                         if (match.mask->dst == cpu_to_be16(0xffff)) {
3539                                 field_flags |= IAVF_CLOUD_FIELD_IIP;
3540                         } else {
3541                                 dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n",
3542                                         be16_to_cpu(match.mask->dst));
3543                                 return -EINVAL;
3544                         }
3545                 }
3546                 if (match.key->dst) {
3547                         vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff);
3548                         vf->data.tcp_spec.dst_port = match.key->dst;
3549                 }
3550
3551                 if (match.key->src) {
3552                         vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff);
3553                         vf->data.tcp_spec.src_port = match.key->src;
3554                 }
3555         }
3556         vf->field_flags = field_flags;
3557
3558         return 0;
3559 }
3560
3561 /**
3562  * iavf_handle_tclass - Forward to a traffic class on the device
3563  * @adapter: board private structure
3564  * @tc: traffic class index on the device
3565  * @filter: pointer to cloud filter structure
3566  */
3567 static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc,
3568                               struct iavf_cloud_filter *filter)
3569 {
3570         if (tc == 0)
3571                 return 0;
3572         if (tc < adapter->num_tc) {
3573                 if (!filter->f.data.tcp_spec.dst_port) {
3574                         dev_err(&adapter->pdev->dev,
3575                                 "Specify destination port to redirect to traffic class other than TC0\n");
3576                         return -EINVAL;
3577                 }
3578         }
3579         /* redirect to a traffic class on the same device */
3580         filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT;
3581         filter->f.action_meta = tc;
3582         return 0;
3583 }
3584
3585 /**
3586  * iavf_configure_clsflower - Add tc flower filters
3587  * @adapter: board private structure
3588  * @cls_flower: Pointer to struct flow_cls_offload
3589  */
3590 static int iavf_configure_clsflower(struct iavf_adapter *adapter,
3591                                     struct flow_cls_offload *cls_flower)
3592 {
3593         int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid);
3594         struct iavf_cloud_filter *filter = NULL;
3595         int err = -EINVAL, count = 50;
3596
3597         if (tc < 0) {
3598                 dev_err(&adapter->pdev->dev, "Invalid traffic class\n");
3599                 return -EINVAL;
3600         }
3601
3602         filter = kzalloc(sizeof(*filter), GFP_KERNEL);
3603         if (!filter)
3604                 return -ENOMEM;
3605
3606         while (!mutex_trylock(&adapter->crit_lock)) {
3607                 if (--count == 0) {
3608                         kfree(filter);
3609                         return err;
3610                 }
3611                 udelay(1);
3612         }
3613
3614         filter->cookie = cls_flower->cookie;
3615
3616         /* set the mask to all zeroes to begin with */
3617         memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec));
3618         /* start out with flow type and eth type IPv4 to begin with */
3619         filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW;
3620         err = iavf_parse_cls_flower(adapter, cls_flower, filter);
3621         if (err)
3622                 goto err;
3623
3624         err = iavf_handle_tclass(adapter, tc, filter);
3625         if (err)
3626                 goto err;
3627
3628         /* add filter to the list */
3629         spin_lock_bh(&adapter->cloud_filter_list_lock);
3630         list_add_tail(&filter->list, &adapter->cloud_filter_list);
3631         adapter->num_cloud_filters++;
3632         filter->add = true;
3633         adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER;
3634         spin_unlock_bh(&adapter->cloud_filter_list_lock);
3635 err:
3636         if (err)
3637                 kfree(filter);
3638
3639         mutex_unlock(&adapter->crit_lock);
3640         return err;
3641 }
3642
3643 /* iavf_find_cf - Find the cloud filter in the list
3644  * @adapter: Board private structure
3645  * @cookie: filter specific cookie
3646  *
3647  * Returns ptr to the filter object or NULL. Must be called while holding the
3648  * cloud_filter_list_lock.
3649  */
3650 static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter,
3651                                               unsigned long *cookie)
3652 {
3653         struct iavf_cloud_filter *filter = NULL;
3654
3655         if (!cookie)
3656                 return NULL;
3657
3658         list_for_each_entry(filter, &adapter->cloud_filter_list, list) {
3659                 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
3660                         return filter;
3661         }
3662         return NULL;
3663 }
3664
3665 /**
3666  * iavf_delete_clsflower - Remove tc flower filters
3667  * @adapter: board private structure
3668  * @cls_flower: Pointer to struct flow_cls_offload
3669  */
3670 static int iavf_delete_clsflower(struct iavf_adapter *adapter,
3671                                  struct flow_cls_offload *cls_flower)
3672 {
3673         struct iavf_cloud_filter *filter = NULL;
3674         int err = 0;
3675
3676         spin_lock_bh(&adapter->cloud_filter_list_lock);
3677         filter = iavf_find_cf(adapter, &cls_flower->cookie);
3678         if (filter) {
3679                 filter->del = true;
3680                 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER;
3681         } else {
3682                 err = -EINVAL;
3683         }
3684         spin_unlock_bh(&adapter->cloud_filter_list_lock);
3685
3686         return err;
3687 }
3688
3689 /**
3690  * iavf_setup_tc_cls_flower - flower classifier offloads
3691  * @adapter: board private structure
3692  * @cls_flower: pointer to flow_cls_offload struct with flow info
3693  */
3694 static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter,
3695                                     struct flow_cls_offload *cls_flower)
3696 {
3697         switch (cls_flower->command) {
3698         case FLOW_CLS_REPLACE:
3699                 return iavf_configure_clsflower(adapter, cls_flower);
3700         case FLOW_CLS_DESTROY:
3701                 return iavf_delete_clsflower(adapter, cls_flower);
3702         case FLOW_CLS_STATS:
3703                 return -EOPNOTSUPP;
3704         default:
3705                 return -EOPNOTSUPP;
3706         }
3707 }
3708
3709 /**
3710  * iavf_setup_tc_block_cb - block callback for tc
3711  * @type: type of offload
3712  * @type_data: offload data
3713  * @cb_priv:
3714  *
3715  * This function is the block callback for traffic classes
3716  **/
3717 static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
3718                                   void *cb_priv)
3719 {
3720         struct iavf_adapter *adapter = cb_priv;
3721
3722         if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data))
3723                 return -EOPNOTSUPP;
3724
3725         switch (type) {
3726         case TC_SETUP_CLSFLOWER:
3727                 return iavf_setup_tc_cls_flower(cb_priv, type_data);
3728         default:
3729                 return -EOPNOTSUPP;
3730         }
3731 }
3732
3733 static LIST_HEAD(iavf_block_cb_list);
3734
3735 /**
3736  * iavf_setup_tc - configure multiple traffic classes
3737  * @netdev: network interface device structure
3738  * @type: type of offload
3739  * @type_data: tc offload data
3740  *
3741  * This function is the callback to ndo_setup_tc in the
3742  * netdev_ops.
3743  *
3744  * Returns 0 on success
3745  **/
3746 static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type,
3747                          void *type_data)
3748 {
3749         struct iavf_adapter *adapter = netdev_priv(netdev);
3750
3751         switch (type) {
3752         case TC_SETUP_QDISC_MQPRIO:
3753                 return __iavf_setup_tc(netdev, type_data);
3754         case TC_SETUP_BLOCK:
3755                 return flow_block_cb_setup_simple(type_data,
3756                                                   &iavf_block_cb_list,
3757                                                   iavf_setup_tc_block_cb,
3758                                                   adapter, adapter, true);
3759         default:
3760                 return -EOPNOTSUPP;
3761         }
3762 }
3763
3764 /**
3765  * iavf_open - Called when a network interface is made active
3766  * @netdev: network interface device structure
3767  *
3768  * Returns 0 on success, negative value on failure
3769  *
3770  * The open entry point is called when a network interface is made
3771  * active by the system (IFF_UP).  At this point all resources needed
3772  * for transmit and receive operations are allocated, the interrupt
3773  * handler is registered with the OS, the watchdog is started,
3774  * and the stack is notified that the interface is ready.
3775  **/
3776 static int iavf_open(struct net_device *netdev)
3777 {
3778         struct iavf_adapter *adapter = netdev_priv(netdev);
3779         int err;
3780
3781         if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) {
3782                 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n");
3783                 return -EIO;
3784         }
3785
3786         while (!mutex_trylock(&adapter->crit_lock))
3787                 usleep_range(500, 1000);
3788
3789         if (adapter->state != __IAVF_DOWN) {
3790                 err = -EBUSY;
3791                 goto err_unlock;
3792         }
3793
3794         if (adapter->state == __IAVF_RUNNING &&
3795             !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) {
3796                 dev_dbg(&adapter->pdev->dev, "VF is already open.\n");
3797                 err = 0;
3798                 goto err_unlock;
3799         }
3800
3801         /* allocate transmit descriptors */
3802         err = iavf_setup_all_tx_resources(adapter);
3803         if (err)
3804                 goto err_setup_tx;
3805
3806         /* allocate receive descriptors */
3807         err = iavf_setup_all_rx_resources(adapter);
3808         if (err)
3809                 goto err_setup_rx;
3810
3811         /* clear any pending interrupts, may auto mask */
3812         err = iavf_request_traffic_irqs(adapter, netdev->name);
3813         if (err)
3814                 goto err_req_irq;
3815
3816         spin_lock_bh(&adapter->mac_vlan_list_lock);
3817
3818         iavf_add_filter(adapter, adapter->hw.mac.addr);
3819
3820         spin_unlock_bh(&adapter->mac_vlan_list_lock);
3821
3822         /* Restore VLAN filters that were removed with IFF_DOWN */
3823         iavf_restore_filters(adapter);
3824
3825         iavf_configure(adapter);
3826
3827         iavf_up_complete(adapter);
3828
3829         iavf_irq_enable(adapter, true);
3830
3831         mutex_unlock(&adapter->crit_lock);
3832
3833         return 0;
3834
3835 err_req_irq:
3836         iavf_down(adapter);
3837         iavf_free_traffic_irqs(adapter);
3838 err_setup_rx:
3839         iavf_free_all_rx_resources(adapter);
3840 err_setup_tx:
3841         iavf_free_all_tx_resources(adapter);
3842 err_unlock:
3843         mutex_unlock(&adapter->crit_lock);
3844
3845         return err;
3846 }
3847
3848 /**
3849  * iavf_close - Disables a network interface
3850  * @netdev: network interface device structure
3851  *
3852  * Returns 0, this is not allowed to fail
3853  *
3854  * The close entry point is called when an interface is de-activated
3855  * by the OS.  The hardware is still under the drivers control, but
3856  * needs to be disabled. All IRQs except vector 0 (reserved for admin queue)
3857  * are freed, along with all transmit and receive resources.
3858  **/
3859 static int iavf_close(struct net_device *netdev)
3860 {
3861         struct iavf_adapter *adapter = netdev_priv(netdev);
3862         int status;
3863
3864         mutex_lock(&adapter->crit_lock);
3865
3866         if (adapter->state <= __IAVF_DOWN_PENDING) {
3867                 mutex_unlock(&adapter->crit_lock);
3868                 return 0;
3869         }
3870
3871         set_bit(__IAVF_VSI_DOWN, adapter->vsi.state);
3872         if (CLIENT_ENABLED(adapter))
3873                 adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_CLOSE;
3874
3875         iavf_down(adapter);
3876         iavf_change_state(adapter, __IAVF_DOWN_PENDING);
3877         iavf_free_traffic_irqs(adapter);
3878
3879         mutex_unlock(&adapter->crit_lock);
3880
3881         /* We explicitly don't free resources here because the hardware is
3882          * still active and can DMA into memory. Resources are cleared in
3883          * iavf_virtchnl_completion() after we get confirmation from the PF
3884          * driver that the rings have been stopped.
3885          *
3886          * Also, we wait for state to transition to __IAVF_DOWN before
3887          * returning. State change occurs in iavf_virtchnl_completion() after
3888          * VF resources are released (which occurs after PF driver processes and
3889          * responds to admin queue commands).
3890          */
3891
3892         status = wait_event_timeout(adapter->down_waitqueue,
3893                                     adapter->state == __IAVF_DOWN,
3894                                     msecs_to_jiffies(500));
3895         if (!status)
3896                 netdev_warn(netdev, "Device resources not yet released\n");
3897         return 0;
3898 }
3899
3900 /**
3901  * iavf_change_mtu - Change the Maximum Transfer Unit
3902  * @netdev: network interface device structure
3903  * @new_mtu: new value for maximum frame size
3904  *
3905  * Returns 0 on success, negative on failure
3906  **/
3907 static int iavf_change_mtu(struct net_device *netdev, int new_mtu)
3908 {
3909         struct iavf_adapter *adapter = netdev_priv(netdev);
3910
3911         netdev_dbg(netdev, "changing MTU from %d to %d\n",
3912                    netdev->mtu, new_mtu);
3913         netdev->mtu = new_mtu;
3914         if (CLIENT_ENABLED(adapter)) {
3915                 iavf_notify_client_l2_params(&adapter->vsi);
3916                 adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED;
3917         }
3918
3919         if (netif_running(netdev)) {
3920                 adapter->flags |= IAVF_FLAG_RESET_NEEDED;
3921                 queue_work(iavf_wq, &adapter->reset_task);
3922         }
3923
3924         return 0;
3925 }
3926
3927 #define NETIF_VLAN_OFFLOAD_FEATURES     (NETIF_F_HW_VLAN_CTAG_RX | \
3928                                          NETIF_F_HW_VLAN_CTAG_TX | \
3929                                          NETIF_F_HW_VLAN_STAG_RX | \
3930                                          NETIF_F_HW_VLAN_STAG_TX)
3931
3932 /**
3933  * iavf_set_features - set the netdev feature flags
3934  * @netdev: ptr to the netdev being adjusted
3935  * @features: the feature set that the stack is suggesting
3936  * Note: expects to be called while under rtnl_lock()
3937  **/
3938 static int iavf_set_features(struct net_device *netdev,
3939                              netdev_features_t features)
3940 {
3941         struct iavf_adapter *adapter = netdev_priv(netdev);
3942
3943         /* trigger update on any VLAN feature change */
3944         if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^
3945             (features & NETIF_VLAN_OFFLOAD_FEATURES))
3946                 iavf_set_vlan_offload_features(adapter, netdev->features,
3947                                                features);
3948
3949         return 0;
3950 }
3951
3952 /**
3953  * iavf_features_check - Validate encapsulated packet conforms to limits
3954  * @skb: skb buff
3955  * @dev: This physical port's netdev
3956  * @features: Offload features that the stack believes apply
3957  **/
3958 static netdev_features_t iavf_features_check(struct sk_buff *skb,
3959                                              struct net_device *dev,
3960                                              netdev_features_t features)
3961 {
3962         size_t len;
3963
3964         /* No point in doing any of this if neither checksum nor GSO are
3965          * being requested for this frame.  We can rule out both by just
3966          * checking for CHECKSUM_PARTIAL
3967          */
3968         if (skb->ip_summed != CHECKSUM_PARTIAL)
3969                 return features;
3970
3971         /* We cannot support GSO if the MSS is going to be less than
3972          * 64 bytes.  If it is then we need to drop support for GSO.
3973          */
3974         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
3975                 features &= ~NETIF_F_GSO_MASK;
3976
3977         /* MACLEN can support at most 63 words */
3978         len = skb_network_header(skb) - skb->data;
3979         if (len & ~(63 * 2))
3980                 goto out_err;
3981
3982         /* IPLEN and EIPLEN can support at most 127 dwords */
3983         len = skb_transport_header(skb) - skb_network_header(skb);
3984         if (len & ~(127 * 4))
3985                 goto out_err;
3986
3987         if (skb->encapsulation) {
3988                 /* L4TUNLEN can support 127 words */
3989                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
3990                 if (len & ~(127 * 2))
3991                         goto out_err;
3992
3993                 /* IPLEN can support at most 127 dwords */
3994                 len = skb_inner_transport_header(skb) -
3995                       skb_inner_network_header(skb);
3996                 if (len & ~(127 * 4))
3997                         goto out_err;
3998         }
3999
4000         /* No need to validate L4LEN as TCP is the only protocol with a
4001          * a flexible value and we support all possible values supported
4002          * by TCP, which is at most 15 dwords
4003          */
4004
4005         return features;
4006 out_err:
4007         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
4008 }
4009
4010 /**
4011  * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off
4012  * @adapter: board private structure
4013  *
4014  * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2
4015  * were negotiated determine the VLAN features that can be toggled on and off.
4016  **/
4017 static netdev_features_t
4018 iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter)
4019 {
4020         netdev_features_t hw_features = 0;
4021
4022         if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags)
4023                 return hw_features;
4024
4025         /* Enable VLAN features if supported */
4026         if (VLAN_ALLOWED(adapter)) {
4027                 hw_features |= (NETIF_F_HW_VLAN_CTAG_TX |
4028                                 NETIF_F_HW_VLAN_CTAG_RX);
4029         } else if (VLAN_V2_ALLOWED(adapter)) {
4030                 struct virtchnl_vlan_caps *vlan_v2_caps =
4031                         &adapter->vlan_v2_caps;
4032                 struct virtchnl_vlan_supported_caps *stripping_support =
4033                         &vlan_v2_caps->offloads.stripping_support;
4034                 struct virtchnl_vlan_supported_caps *insertion_support =
4035                         &vlan_v2_caps->offloads.insertion_support;
4036
4037                 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
4038                     stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) {
4039                         if (stripping_support->outer &
4040                             VIRTCHNL_VLAN_ETHERTYPE_8100)
4041                                 hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
4042                         if (stripping_support->outer &
4043                             VIRTCHNL_VLAN_ETHERTYPE_88A8)
4044                                 hw_features |= NETIF_F_HW_VLAN_STAG_RX;
4045                 } else if (stripping_support->inner !=
4046                            VIRTCHNL_VLAN_UNSUPPORTED &&
4047                            stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) {
4048                         if (stripping_support->inner &
4049                             VIRTCHNL_VLAN_ETHERTYPE_8100)
4050                                 hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
4051                 }
4052
4053                 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED &&
4054                     insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) {
4055                         if (insertion_support->outer &
4056                             VIRTCHNL_VLAN_ETHERTYPE_8100)
4057                                 hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
4058                         if (insertion_support->outer &
4059                             VIRTCHNL_VLAN_ETHERTYPE_88A8)
4060                                 hw_features |= NETIF_F_HW_VLAN_STAG_TX;
4061                 } else if (insertion_support->inner &&
4062                            insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) {
4063                         if (insertion_support->inner &
4064                             VIRTCHNL_VLAN_ETHERTYPE_8100)
4065                                 hw_features |= NETIF_F_HW_VLAN_CTAG_TX;
4066                 }
4067         }
4068
4069         return hw_features;
4070 }
4071
4072 /**
4073  * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures
4074  * @adapter: board private structure
4075  *
4076  * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2
4077  * were negotiated determine the VLAN features that are enabled by default.
4078  **/
4079 static netdev_features_t
4080 iavf_get_netdev_vlan_features(struct iavf_adapter *adapter)
4081 {
4082         netdev_features_t features = 0;
4083
4084         if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags)
4085                 return features;
4086
4087         if (VLAN_ALLOWED(adapter)) {
4088                 features |= NETIF_F_HW_VLAN_CTAG_FILTER |
4089                         NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX;
4090         } else if (VLAN_V2_ALLOWED(adapter)) {
4091                 struct virtchnl_vlan_caps *vlan_v2_caps =
4092                         &adapter->vlan_v2_caps;
4093                 struct virtchnl_vlan_supported_caps *filtering_support =
4094                         &vlan_v2_caps->filtering.filtering_support;
4095                 struct virtchnl_vlan_supported_caps *stripping_support =
4096                         &vlan_v2_caps->offloads.stripping_support;
4097                 struct virtchnl_vlan_supported_caps *insertion_support =
4098                         &vlan_v2_caps->offloads.insertion_support;
4099                 u32 ethertype_init;
4100
4101                 /* give priority to outer stripping and don't support both outer
4102                  * and inner stripping
4103                  */
4104                 ethertype_init = vlan_v2_caps->offloads.ethertype_init;
4105                 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
4106                         if (stripping_support->outer &
4107                             VIRTCHNL_VLAN_ETHERTYPE_8100 &&
4108                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
4109                                 features |= NETIF_F_HW_VLAN_CTAG_RX;
4110                         else if (stripping_support->outer &
4111                                  VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
4112                                  ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
4113                                 features |= NETIF_F_HW_VLAN_STAG_RX;
4114                 } else if (stripping_support->inner !=
4115                            VIRTCHNL_VLAN_UNSUPPORTED) {
4116                         if (stripping_support->inner &
4117                             VIRTCHNL_VLAN_ETHERTYPE_8100 &&
4118                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
4119                                 features |= NETIF_F_HW_VLAN_CTAG_RX;
4120                 }
4121
4122                 /* give priority to outer insertion and don't support both outer
4123                  * and inner insertion
4124                  */
4125                 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
4126                         if (insertion_support->outer &
4127                             VIRTCHNL_VLAN_ETHERTYPE_8100 &&
4128                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
4129                                 features |= NETIF_F_HW_VLAN_CTAG_TX;
4130                         else if (insertion_support->outer &
4131                                  VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
4132                                  ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
4133                                 features |= NETIF_F_HW_VLAN_STAG_TX;
4134                 } else if (insertion_support->inner !=
4135                            VIRTCHNL_VLAN_UNSUPPORTED) {
4136                         if (insertion_support->inner &
4137                             VIRTCHNL_VLAN_ETHERTYPE_8100 &&
4138                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
4139                                 features |= NETIF_F_HW_VLAN_CTAG_TX;
4140                 }
4141
4142                 /* give priority to outer filtering and don't bother if both
4143                  * outer and inner filtering are enabled
4144                  */
4145                 ethertype_init = vlan_v2_caps->filtering.ethertype_init;
4146                 if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) {
4147                         if (filtering_support->outer &
4148                             VIRTCHNL_VLAN_ETHERTYPE_8100 &&
4149                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
4150                                 features |= NETIF_F_HW_VLAN_CTAG_FILTER;
4151                         if (filtering_support->outer &
4152                             VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
4153                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
4154                                 features |= NETIF_F_HW_VLAN_STAG_FILTER;
4155                 } else if (filtering_support->inner !=
4156                            VIRTCHNL_VLAN_UNSUPPORTED) {
4157                         if (filtering_support->inner &
4158                             VIRTCHNL_VLAN_ETHERTYPE_8100 &&
4159                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100)
4160                                 features |= NETIF_F_HW_VLAN_CTAG_FILTER;
4161                         if (filtering_support->inner &
4162                             VIRTCHNL_VLAN_ETHERTYPE_88A8 &&
4163                             ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8)
4164                                 features |= NETIF_F_HW_VLAN_STAG_FILTER;
4165                 }
4166         }
4167
4168         return features;
4169 }
4170
4171 #define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \
4172         (!(((requested) & (feature_bit)) && \
4173            !((allowed) & (feature_bit))))
4174
4175 /**
4176  * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support
4177  * @adapter: board private structure
4178  * @requested_features: stack requested NETDEV features
4179  **/
4180 static netdev_features_t
4181 iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter,
4182                               netdev_features_t requested_features)
4183 {
4184         netdev_features_t allowed_features;
4185
4186         allowed_features = iavf_get_netdev_vlan_hw_features(adapter) |
4187                 iavf_get_netdev_vlan_features(adapter);
4188
4189         if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
4190                                               allowed_features,
4191                                               NETIF_F_HW_VLAN_CTAG_TX))
4192                 requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX;
4193
4194         if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
4195                                               allowed_features,
4196                                               NETIF_F_HW_VLAN_CTAG_RX))
4197                 requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
4198
4199         if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
4200                                               allowed_features,
4201                                               NETIF_F_HW_VLAN_STAG_TX))
4202                 requested_features &= ~NETIF_F_HW_VLAN_STAG_TX;
4203         if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
4204                                               allowed_features,
4205                                               NETIF_F_HW_VLAN_STAG_RX))
4206                 requested_features &= ~NETIF_F_HW_VLAN_STAG_RX;
4207
4208         if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
4209                                               allowed_features,
4210                                               NETIF_F_HW_VLAN_CTAG_FILTER))
4211                 requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER;
4212
4213         if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features,
4214                                               allowed_features,
4215                                               NETIF_F_HW_VLAN_STAG_FILTER))
4216                 requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER;
4217
4218         if ((requested_features &
4219              (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) &&
4220             (requested_features &
4221              (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) &&
4222             adapter->vlan_v2_caps.offloads.ethertype_match ==
4223             VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) {
4224                 netdev_warn(adapter->netdev, "cannot support CTAG and STAG VLAN stripping and/or insertion simultaneously since CTAG and STAG offloads are mutually exclusive, clearing STAG offload settings\n");
4225                 requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX |
4226                                         NETIF_F_HW_VLAN_STAG_TX);
4227         }
4228
4229         return requested_features;
4230 }
4231
4232 /**
4233  * iavf_fix_features - fix up the netdev feature bits
4234  * @netdev: our net device
4235  * @features: desired feature bits
4236  *
4237  * Returns fixed-up features bits
4238  **/
4239 static netdev_features_t iavf_fix_features(struct net_device *netdev,
4240                                            netdev_features_t features)
4241 {
4242         struct iavf_adapter *adapter = netdev_priv(netdev);
4243
4244         return iavf_fix_netdev_vlan_features(adapter, features);
4245 }
4246
4247 static const struct net_device_ops iavf_netdev_ops = {
4248         .ndo_open               = iavf_open,
4249         .ndo_stop               = iavf_close,
4250         .ndo_start_xmit         = iavf_xmit_frame,
4251         .ndo_set_rx_mode        = iavf_set_rx_mode,
4252         .ndo_validate_addr      = eth_validate_addr,
4253         .ndo_set_mac_address    = iavf_set_mac,
4254         .ndo_change_mtu         = iavf_change_mtu,
4255         .ndo_tx_timeout         = iavf_tx_timeout,
4256         .ndo_vlan_rx_add_vid    = iavf_vlan_rx_add_vid,
4257         .ndo_vlan_rx_kill_vid   = iavf_vlan_rx_kill_vid,
4258         .ndo_features_check     = iavf_features_check,
4259         .ndo_fix_features       = iavf_fix_features,
4260         .ndo_set_features       = iavf_set_features,
4261         .ndo_setup_tc           = iavf_setup_tc,
4262 };
4263
4264 /**
4265  * iavf_check_reset_complete - check that VF reset is complete
4266  * @hw: pointer to hw struct
4267  *
4268  * Returns 0 if device is ready to use, or -EBUSY if it's in reset.
4269  **/
4270 static int iavf_check_reset_complete(struct iavf_hw *hw)
4271 {
4272         u32 rstat;
4273         int i;
4274
4275         for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) {
4276                 rstat = rd32(hw, IAVF_VFGEN_RSTAT) &
4277                              IAVF_VFGEN_RSTAT_VFR_STATE_MASK;
4278                 if ((rstat == VIRTCHNL_VFR_VFACTIVE) ||
4279                     (rstat == VIRTCHNL_VFR_COMPLETED))
4280                         return 0;
4281                 usleep_range(10, 20);
4282         }
4283         return -EBUSY;
4284 }
4285
4286 /**
4287  * iavf_process_config - Process the config information we got from the PF
4288  * @adapter: board private structure
4289  *
4290  * Verify that we have a valid config struct, and set up our netdev features
4291  * and our VSI struct.
4292  **/
4293 int iavf_process_config(struct iavf_adapter *adapter)
4294 {
4295         struct virtchnl_vf_resource *vfres = adapter->vf_res;
4296         netdev_features_t hw_vlan_features, vlan_features;
4297         struct net_device *netdev = adapter->netdev;
4298         netdev_features_t hw_enc_features;
4299         netdev_features_t hw_features;
4300
4301         hw_enc_features = NETIF_F_SG                    |
4302                           NETIF_F_IP_CSUM               |
4303                           NETIF_F_IPV6_CSUM             |
4304                           NETIF_F_HIGHDMA               |
4305                           NETIF_F_SOFT_FEATURES |
4306                           NETIF_F_TSO                   |
4307                           NETIF_F_TSO_ECN               |
4308                           NETIF_F_TSO6                  |
4309                           NETIF_F_SCTP_CRC              |
4310                           NETIF_F_RXHASH                |
4311                           NETIF_F_RXCSUM                |
4312                           0;
4313
4314         /* advertise to stack only if offloads for encapsulated packets is
4315          * supported
4316          */
4317         if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) {
4318                 hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL       |
4319                                    NETIF_F_GSO_GRE              |
4320                                    NETIF_F_GSO_GRE_CSUM         |
4321                                    NETIF_F_GSO_IPXIP4           |
4322                                    NETIF_F_GSO_IPXIP6           |
4323                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
4324                                    NETIF_F_GSO_PARTIAL          |
4325                                    0;
4326
4327                 if (!(vfres->vf_cap_flags &
4328                       VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM))
4329                         netdev->gso_partial_features |=
4330                                 NETIF_F_GSO_UDP_TUNNEL_CSUM;
4331
4332                 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
4333                 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
4334                 netdev->hw_enc_features |= hw_enc_features;
4335         }
4336         /* record features VLANs can make use of */
4337         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
4338
4339         /* Write features and hw_features separately to avoid polluting
4340          * with, or dropping, features that are set when we registered.
4341          */
4342         hw_features = hw_enc_features;
4343
4344         /* get HW VLAN features that can be toggled */
4345         hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter);
4346
4347         /* Enable cloud filter if ADQ is supported */
4348         if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)
4349                 hw_features |= NETIF_F_HW_TC;
4350         if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO)
4351                 hw_features |= NETIF_F_GSO_UDP_L4;
4352
4353         netdev->hw_features |= hw_features | hw_vlan_features;
4354         vlan_features = iavf_get_netdev_vlan_features(adapter);
4355
4356         netdev->features |= hw_features | vlan_features;
4357
4358         if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN)
4359                 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
4360
4361         netdev->priv_flags |= IFF_UNICAST_FLT;
4362
4363         /* Do not turn on offloads when they are requested to be turned off.
4364          * TSO needs minimum 576 bytes to work correctly.
4365          */
4366         if (netdev->wanted_features) {
4367                 if (!(netdev->wanted_features & NETIF_F_TSO) ||
4368                     netdev->mtu < 576)
4369                         netdev->features &= ~NETIF_F_TSO;
4370                 if (!(netdev->wanted_features & NETIF_F_TSO6) ||
4371                     netdev->mtu < 576)
4372                         netdev->features &= ~NETIF_F_TSO6;
4373                 if (!(netdev->wanted_features & NETIF_F_TSO_ECN))
4374                         netdev->features &= ~NETIF_F_TSO_ECN;
4375                 if (!(netdev->wanted_features & NETIF_F_GRO))
4376                         netdev->features &= ~NETIF_F_GRO;
4377                 if (!(netdev->wanted_features & NETIF_F_GSO))
4378                         netdev->features &= ~NETIF_F_GSO;
4379         }
4380
4381         return 0;
4382 }
4383
4384 /**
4385  * iavf_shutdown - Shutdown the device in preparation for a reboot
4386  * @pdev: pci device structure
4387  **/
4388 static void iavf_shutdown(struct pci_dev *pdev)
4389 {
4390         struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev);
4391         struct net_device *netdev = adapter->netdev;
4392
4393         netif_device_detach(netdev);
4394
4395         if (netif_running(netdev))
4396                 iavf_close(netdev);
4397
4398         if (iavf_lock_timeout(&adapter->crit_lock, 5000))
4399                 dev_warn(&adapter->pdev->dev, "failed to acquire crit_lock in %s\n", __FUNCTION__);
4400         /* Prevent the watchdog from running. */
4401         iavf_change_state(adapter, __IAVF_REMOVE);
4402         adapter->aq_required = 0;
4403         mutex_unlock(&adapter->crit_lock);
4404
4405 #ifdef CONFIG_PM
4406         pci_save_state(pdev);
4407
4408 #endif
4409         pci_disable_device(pdev);
4410 }
4411
4412 /**
4413  * iavf_probe - Device Initialization Routine
4414  * @pdev: PCI device information struct
4415  * @ent: entry in iavf_pci_tbl
4416  *
4417  * Returns 0 on success, negative on failure
4418  *
4419  * iavf_probe initializes an adapter identified by a pci_dev structure.
4420  * The OS initialization, configuring of the adapter private structure,
4421  * and a hardware reset occur.
4422  **/
4423 static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4424 {
4425         struct net_device *netdev;
4426         struct iavf_adapter *adapter = NULL;
4427         struct iavf_hw *hw = NULL;
4428         int err;
4429
4430         err = pci_enable_device(pdev);
4431         if (err)
4432                 return err;
4433
4434         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
4435         if (err) {
4436                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
4437                 if (err) {
4438                         dev_err(&pdev->dev,
4439                                 "DMA configuration failed: 0x%x\n", err);
4440                         goto err_dma;
4441                 }
4442         }
4443
4444         err = pci_request_regions(pdev, iavf_driver_name);
4445         if (err) {
4446                 dev_err(&pdev->dev,
4447                         "pci_request_regions failed 0x%x\n", err);
4448                 goto err_pci_reg;
4449         }
4450
4451         pci_enable_pcie_error_reporting(pdev);
4452
4453         pci_set_master(pdev);
4454
4455         netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter),
4456                                    IAVF_MAX_REQ_QUEUES);
4457         if (!netdev) {
4458                 err = -ENOMEM;
4459                 goto err_alloc_etherdev;
4460         }
4461
4462         SET_NETDEV_DEV(netdev, &pdev->dev);
4463
4464         pci_set_drvdata(pdev, netdev);
4465         adapter = netdev_priv(netdev);
4466
4467         adapter->netdev = netdev;
4468         adapter->pdev = pdev;
4469
4470         hw = &adapter->hw;
4471         hw->back = adapter;
4472
4473         adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
4474         iavf_change_state(adapter, __IAVF_STARTUP);
4475
4476         /* Call save state here because it relies on the adapter struct. */
4477         pci_save_state(pdev);
4478
4479         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
4480                               pci_resource_len(pdev, 0));
4481         if (!hw->hw_addr) {
4482                 err = -EIO;
4483                 goto err_ioremap;
4484         }
4485         hw->vendor_id = pdev->vendor;
4486         hw->device_id = pdev->device;
4487         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
4488         hw->subsystem_vendor_id = pdev->subsystem_vendor;
4489         hw->subsystem_device_id = pdev->subsystem_device;
4490         hw->bus.device = PCI_SLOT(pdev->devfn);
4491         hw->bus.func = PCI_FUNC(pdev->devfn);
4492         hw->bus.bus_id = pdev->bus->number;
4493
4494         /* set up the locks for the AQ, do this only once in probe
4495          * and destroy them only once in remove
4496          */
4497         mutex_init(&adapter->crit_lock);
4498         mutex_init(&adapter->client_lock);
4499         mutex_init(&hw->aq.asq_mutex);
4500         mutex_init(&hw->aq.arq_mutex);
4501
4502         spin_lock_init(&adapter->mac_vlan_list_lock);
4503         spin_lock_init(&adapter->cloud_filter_list_lock);
4504         spin_lock_init(&adapter->fdir_fltr_lock);
4505         spin_lock_init(&adapter->adv_rss_lock);
4506
4507         INIT_LIST_HEAD(&adapter->mac_filter_list);
4508         INIT_LIST_HEAD(&adapter->vlan_filter_list);
4509         INIT_LIST_HEAD(&adapter->cloud_filter_list);
4510         INIT_LIST_HEAD(&adapter->fdir_list_head);
4511         INIT_LIST_HEAD(&adapter->adv_rss_list_head);
4512
4513         INIT_WORK(&adapter->reset_task, iavf_reset_task);
4514         INIT_WORK(&adapter->adminq_task, iavf_adminq_task);
4515         INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task);
4516         INIT_DELAYED_WORK(&adapter->client_task, iavf_client_task);
4517         queue_delayed_work(iavf_wq, &adapter->watchdog_task,
4518                            msecs_to_jiffies(5 * (pdev->devfn & 0x07)));
4519
4520         /* Setup the wait queue for indicating transition to down status */
4521         init_waitqueue_head(&adapter->down_waitqueue);
4522
4523         return 0;
4524
4525 err_ioremap:
4526         free_netdev(netdev);
4527 err_alloc_etherdev:
4528         pci_disable_pcie_error_reporting(pdev);
4529         pci_release_regions(pdev);
4530 err_pci_reg:
4531 err_dma:
4532         pci_disable_device(pdev);
4533         return err;
4534 }
4535
4536 /**
4537  * iavf_suspend - Power management suspend routine
4538  * @dev_d: device info pointer
4539  *
4540  * Called when the system (VM) is entering sleep/suspend.
4541  **/
4542 static int __maybe_unused iavf_suspend(struct device *dev_d)
4543 {
4544         struct net_device *netdev = dev_get_drvdata(dev_d);
4545         struct iavf_adapter *adapter = netdev_priv(netdev);
4546
4547         netif_device_detach(netdev);
4548
4549         while (!mutex_trylock(&adapter->crit_lock))
4550                 usleep_range(500, 1000);
4551
4552         if (netif_running(netdev)) {
4553                 rtnl_lock();
4554                 iavf_down(adapter);
4555                 rtnl_unlock();
4556         }
4557         iavf_free_misc_irq(adapter);
4558         iavf_reset_interrupt_capability(adapter);
4559
4560         mutex_unlock(&adapter->crit_lock);
4561
4562         return 0;
4563 }
4564
4565 /**
4566  * iavf_resume - Power management resume routine
4567  * @dev_d: device info pointer
4568  *
4569  * Called when the system (VM) is resumed from sleep/suspend.
4570  **/
4571 static int __maybe_unused iavf_resume(struct device *dev_d)
4572 {
4573         struct pci_dev *pdev = to_pci_dev(dev_d);
4574         struct iavf_adapter *adapter;
4575         u32 err;
4576
4577         adapter = iavf_pdev_to_adapter(pdev);
4578
4579         pci_set_master(pdev);
4580
4581         rtnl_lock();
4582         err = iavf_set_interrupt_capability(adapter);
4583         if (err) {
4584                 rtnl_unlock();
4585                 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n");
4586                 return err;
4587         }
4588         err = iavf_request_misc_irq(adapter);
4589         rtnl_unlock();
4590         if (err) {
4591                 dev_err(&pdev->dev, "Cannot get interrupt vector.\n");
4592                 return err;
4593         }
4594
4595         queue_work(iavf_wq, &adapter->reset_task);
4596
4597         netif_device_attach(adapter->netdev);
4598
4599         return err;
4600 }
4601
4602 /**
4603  * iavf_remove - Device Removal Routine
4604  * @pdev: PCI device information struct
4605  *
4606  * iavf_remove is called by the PCI subsystem to alert the driver
4607  * that it should release a PCI device.  The could be caused by a
4608  * Hot-Plug event, or because the driver is going to be removed from
4609  * memory.
4610  **/
4611 static void iavf_remove(struct pci_dev *pdev)
4612 {
4613         struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev);
4614         struct net_device *netdev = adapter->netdev;
4615         struct iavf_fdir_fltr *fdir, *fdirtmp;
4616         struct iavf_vlan_filter *vlf, *vlftmp;
4617         struct iavf_adv_rss *rss, *rsstmp;
4618         struct iavf_mac_filter *f, *ftmp;
4619         struct iavf_cloud_filter *cf, *cftmp;
4620         struct iavf_hw *hw = &adapter->hw;
4621         int err;
4622
4623         /* When reboot/shutdown is in progress no need to do anything
4624          * as the adapter is already REMOVE state that was set during
4625          * iavf_shutdown() callback.
4626          */
4627         if (adapter->state == __IAVF_REMOVE)
4628                 return;
4629
4630         set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section);
4631         /* Wait until port initialization is complete.
4632          * There are flows where register/unregister netdev may race.
4633          */
4634         while (1) {
4635                 mutex_lock(&adapter->crit_lock);
4636                 if (adapter->state == __IAVF_RUNNING ||
4637                     adapter->state == __IAVF_DOWN ||
4638                     adapter->state == __IAVF_INIT_FAILED) {
4639                         mutex_unlock(&adapter->crit_lock);
4640                         break;
4641                 }
4642
4643                 mutex_unlock(&adapter->crit_lock);
4644                 usleep_range(500, 1000);
4645         }
4646         cancel_delayed_work_sync(&adapter->watchdog_task);
4647
4648         if (adapter->netdev_registered) {
4649                 rtnl_lock();
4650                 unregister_netdevice(netdev);
4651                 adapter->netdev_registered = false;
4652                 rtnl_unlock();
4653         }
4654         if (CLIENT_ALLOWED(adapter)) {
4655                 err = iavf_lan_del_device(adapter);
4656                 if (err)
4657                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
4658                                  err);
4659         }
4660
4661         mutex_lock(&adapter->crit_lock);
4662         dev_info(&adapter->pdev->dev, "Remove device\n");
4663         iavf_change_state(adapter, __IAVF_REMOVE);
4664
4665         iavf_request_reset(adapter);
4666         msleep(50);
4667         /* If the FW isn't responding, kick it once, but only once. */
4668         if (!iavf_asq_done(hw)) {
4669                 iavf_request_reset(adapter);
4670                 msleep(50);
4671         }
4672
4673         iavf_misc_irq_disable(adapter);
4674         /* Shut down all the garbage mashers on the detention level */
4675         cancel_work_sync(&adapter->reset_task);
4676         cancel_delayed_work_sync(&adapter->watchdog_task);
4677         cancel_work_sync(&adapter->adminq_task);
4678         cancel_delayed_work_sync(&adapter->client_task);
4679
4680         adapter->aq_required = 0;
4681         adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED;
4682
4683         iavf_free_all_tx_resources(adapter);
4684         iavf_free_all_rx_resources(adapter);
4685         iavf_free_misc_irq(adapter);
4686
4687         iavf_reset_interrupt_capability(adapter);
4688         iavf_free_q_vectors(adapter);
4689
4690         iavf_free_rss(adapter);
4691
4692         if (hw->aq.asq.count)
4693                 iavf_shutdown_adminq(hw);
4694
4695         /* destroy the locks only once, here */
4696         mutex_destroy(&hw->aq.arq_mutex);
4697         mutex_destroy(&hw->aq.asq_mutex);
4698         mutex_destroy(&adapter->client_lock);
4699         mutex_unlock(&adapter->crit_lock);
4700         mutex_destroy(&adapter->crit_lock);
4701
4702         iounmap(hw->hw_addr);
4703         pci_release_regions(pdev);
4704         iavf_free_queues(adapter);
4705         kfree(adapter->vf_res);
4706         spin_lock_bh(&adapter->mac_vlan_list_lock);
4707         /* If we got removed before an up/down sequence, we've got a filter
4708          * hanging out there that we need to get rid of.
4709          */
4710         list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) {
4711                 list_del(&f->list);
4712                 kfree(f);
4713         }
4714         list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list,
4715                                  list) {
4716                 list_del(&vlf->list);
4717                 kfree(vlf);
4718         }
4719
4720         spin_unlock_bh(&adapter->mac_vlan_list_lock);
4721
4722         spin_lock_bh(&adapter->cloud_filter_list_lock);
4723         list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) {
4724                 list_del(&cf->list);
4725                 kfree(cf);
4726         }
4727         spin_unlock_bh(&adapter->cloud_filter_list_lock);
4728
4729         spin_lock_bh(&adapter->fdir_fltr_lock);
4730         list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) {
4731                 list_del(&fdir->list);
4732                 kfree(fdir);
4733         }
4734         spin_unlock_bh(&adapter->fdir_fltr_lock);
4735
4736         spin_lock_bh(&adapter->adv_rss_lock);
4737         list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head,
4738                                  list) {
4739                 list_del(&rss->list);
4740                 kfree(rss);
4741         }
4742         spin_unlock_bh(&adapter->adv_rss_lock);
4743
4744         free_netdev(netdev);
4745
4746         pci_disable_pcie_error_reporting(pdev);
4747
4748         pci_disable_device(pdev);
4749 }
4750
4751 static SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume);
4752
4753 static struct pci_driver iavf_driver = {
4754         .name      = iavf_driver_name,
4755         .id_table  = iavf_pci_tbl,
4756         .probe     = iavf_probe,
4757         .remove    = iavf_remove,
4758         .driver.pm = &iavf_pm_ops,
4759         .shutdown  = iavf_shutdown,
4760 };
4761
4762 /**
4763  * iavf_init_module - Driver Registration Routine
4764  *
4765  * iavf_init_module is the first routine called when the driver is
4766  * loaded. All it does is register with the PCI subsystem.
4767  **/
4768 static int __init iavf_init_module(void)
4769 {
4770         int ret;
4771
4772         pr_info("iavf: %s\n", iavf_driver_string);
4773
4774         pr_info("%s\n", iavf_copyright);
4775
4776         iavf_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
4777                                   iavf_driver_name);
4778         if (!iavf_wq) {
4779                 pr_err("%s: Failed to create workqueue\n", iavf_driver_name);
4780                 return -ENOMEM;
4781         }
4782         ret = pci_register_driver(&iavf_driver);
4783         return ret;
4784 }
4785
4786 module_init(iavf_init_module);
4787
4788 /**
4789  * iavf_exit_module - Driver Exit Cleanup Routine
4790  *
4791  * iavf_exit_module is called just before the driver is removed
4792  * from memory.
4793  **/
4794 static void __exit iavf_exit_module(void)
4795 {
4796         pci_unregister_driver(&iavf_driver);
4797         destroy_workqueue(iavf_wq);
4798 }
4799
4800 module_exit(iavf_exit_module);
4801
4802 /* iavf_main.c */