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 int iavf_status_to_errno(enum iavf_status status) 55 { 56 switch (status) { 57 case IAVF_SUCCESS: 58 return 0; 59 case IAVF_ERR_PARAM: 60 case IAVF_ERR_MAC_TYPE: 61 case IAVF_ERR_INVALID_MAC_ADDR: 62 case IAVF_ERR_INVALID_LINK_SETTINGS: 63 case IAVF_ERR_INVALID_PD_ID: 64 case IAVF_ERR_INVALID_QP_ID: 65 case IAVF_ERR_INVALID_CQ_ID: 66 case IAVF_ERR_INVALID_CEQ_ID: 67 case IAVF_ERR_INVALID_AEQ_ID: 68 case IAVF_ERR_INVALID_SIZE: 69 case IAVF_ERR_INVALID_ARP_INDEX: 70 case IAVF_ERR_INVALID_FPM_FUNC_ID: 71 case IAVF_ERR_QP_INVALID_MSG_SIZE: 72 case IAVF_ERR_INVALID_FRAG_COUNT: 73 case IAVF_ERR_INVALID_ALIGNMENT: 74 case IAVF_ERR_INVALID_PUSH_PAGE_INDEX: 75 case IAVF_ERR_INVALID_IMM_DATA_SIZE: 76 case IAVF_ERR_INVALID_VF_ID: 77 case IAVF_ERR_INVALID_HMCFN_ID: 78 case IAVF_ERR_INVALID_PBLE_INDEX: 79 case IAVF_ERR_INVALID_SD_INDEX: 80 case IAVF_ERR_INVALID_PAGE_DESC_INDEX: 81 case IAVF_ERR_INVALID_SD_TYPE: 82 case IAVF_ERR_INVALID_HMC_OBJ_INDEX: 83 case IAVF_ERR_INVALID_HMC_OBJ_COUNT: 84 case IAVF_ERR_INVALID_SRQ_ARM_LIMIT: 85 return -EINVAL; 86 case IAVF_ERR_NVM: 87 case IAVF_ERR_NVM_CHECKSUM: 88 case IAVF_ERR_PHY: 89 case IAVF_ERR_CONFIG: 90 case IAVF_ERR_UNKNOWN_PHY: 91 case IAVF_ERR_LINK_SETUP: 92 case IAVF_ERR_ADAPTER_STOPPED: 93 case IAVF_ERR_PRIMARY_REQUESTS_PENDING: 94 case IAVF_ERR_AUTONEG_NOT_COMPLETE: 95 case IAVF_ERR_RESET_FAILED: 96 case IAVF_ERR_BAD_PTR: 97 case IAVF_ERR_SWFW_SYNC: 98 case IAVF_ERR_QP_TOOMANY_WRS_POSTED: 99 case IAVF_ERR_QUEUE_EMPTY: 100 case IAVF_ERR_FLUSHED_QUEUE: 101 case IAVF_ERR_OPCODE_MISMATCH: 102 case IAVF_ERR_CQP_COMPL_ERROR: 103 case IAVF_ERR_BACKING_PAGE_ERROR: 104 case IAVF_ERR_NO_PBLCHUNKS_AVAILABLE: 105 case IAVF_ERR_MEMCPY_FAILED: 106 case IAVF_ERR_SRQ_ENABLED: 107 case IAVF_ERR_ADMIN_QUEUE_ERROR: 108 case IAVF_ERR_ADMIN_QUEUE_FULL: 109 case IAVF_ERR_BAD_IWARP_CQE: 110 case IAVF_ERR_NVM_BLANK_MODE: 111 case IAVF_ERR_PE_DOORBELL_NOT_ENABLED: 112 case IAVF_ERR_DIAG_TEST_FAILED: 113 case IAVF_ERR_FIRMWARE_API_VERSION: 114 case IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR: 115 return -EIO; 116 case IAVF_ERR_DEVICE_NOT_SUPPORTED: 117 return -ENODEV; 118 case IAVF_ERR_NO_AVAILABLE_VSI: 119 case IAVF_ERR_RING_FULL: 120 return -ENOSPC; 121 case IAVF_ERR_NO_MEMORY: 122 return -ENOMEM; 123 case IAVF_ERR_TIMEOUT: 124 case IAVF_ERR_ADMIN_QUEUE_TIMEOUT: 125 return -ETIMEDOUT; 126 case IAVF_ERR_NOT_IMPLEMENTED: 127 case IAVF_NOT_SUPPORTED: 128 return -EOPNOTSUPP; 129 case IAVF_ERR_ADMIN_QUEUE_NO_WORK: 130 return -EALREADY; 131 case IAVF_ERR_NOT_READY: 132 return -EBUSY; 133 case IAVF_ERR_BUF_TOO_SHORT: 134 return -EMSGSIZE; 135 } 136 137 return -EIO; 138 } 139 140 int virtchnl_status_to_errno(enum virtchnl_status_code v_status) 141 { 142 switch (v_status) { 143 case VIRTCHNL_STATUS_SUCCESS: 144 return 0; 145 case VIRTCHNL_STATUS_ERR_PARAM: 146 case VIRTCHNL_STATUS_ERR_INVALID_VF_ID: 147 return -EINVAL; 148 case VIRTCHNL_STATUS_ERR_NO_MEMORY: 149 return -ENOMEM; 150 case VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH: 151 case VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR: 152 case VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR: 153 return -EIO; 154 case VIRTCHNL_STATUS_ERR_NOT_SUPPORTED: 155 return -EOPNOTSUPP; 156 } 157 158 return -EIO; 159 } 160 161 /** 162 * iavf_pdev_to_adapter - go from pci_dev to adapter 163 * @pdev: pci_dev pointer 164 */ 165 static struct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev) 166 { 167 return netdev_priv(pci_get_drvdata(pdev)); 168 } 169 170 /** 171 * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code 172 * @hw: pointer to the HW structure 173 * @mem: ptr to mem struct to fill out 174 * @size: size of memory requested 175 * @alignment: what to align the allocation to 176 **/ 177 enum iavf_status iavf_allocate_dma_mem_d(struct iavf_hw *hw, 178 struct iavf_dma_mem *mem, 179 u64 size, u32 alignment) 180 { 181 struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back; 182 183 if (!mem) 184 return IAVF_ERR_PARAM; 185 186 mem->size = ALIGN(size, alignment); 187 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size, 188 (dma_addr_t *)&mem->pa, GFP_KERNEL); 189 if (mem->va) 190 return 0; 191 else 192 return IAVF_ERR_NO_MEMORY; 193 } 194 195 /** 196 * iavf_free_dma_mem_d - OS specific memory free for shared code 197 * @hw: pointer to the HW structure 198 * @mem: ptr to mem struct to free 199 **/ 200 enum iavf_status iavf_free_dma_mem_d(struct iavf_hw *hw, 201 struct iavf_dma_mem *mem) 202 { 203 struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back; 204 205 if (!mem || !mem->va) 206 return IAVF_ERR_PARAM; 207 dma_free_coherent(&adapter->pdev->dev, mem->size, 208 mem->va, (dma_addr_t)mem->pa); 209 return 0; 210 } 211 212 /** 213 * iavf_allocate_virt_mem_d - OS specific memory alloc for shared code 214 * @hw: pointer to the HW structure 215 * @mem: ptr to mem struct to fill out 216 * @size: size of memory requested 217 **/ 218 enum iavf_status iavf_allocate_virt_mem_d(struct iavf_hw *hw, 219 struct iavf_virt_mem *mem, u32 size) 220 { 221 if (!mem) 222 return IAVF_ERR_PARAM; 223 224 mem->size = size; 225 mem->va = kzalloc(size, GFP_KERNEL); 226 227 if (mem->va) 228 return 0; 229 else 230 return IAVF_ERR_NO_MEMORY; 231 } 232 233 /** 234 * iavf_free_virt_mem_d - OS specific memory free for shared code 235 * @hw: pointer to the HW structure 236 * @mem: ptr to mem struct to free 237 **/ 238 enum iavf_status iavf_free_virt_mem_d(struct iavf_hw *hw, 239 struct iavf_virt_mem *mem) 240 { 241 if (!mem) 242 return IAVF_ERR_PARAM; 243 244 /* it's ok to kfree a NULL pointer */ 245 kfree(mem->va); 246 247 return 0; 248 } 249 250 /** 251 * iavf_lock_timeout - try to lock mutex but give up after timeout 252 * @lock: mutex that should be locked 253 * @msecs: timeout in msecs 254 * 255 * Returns 0 on success, negative on failure 256 **/ 257 int iavf_lock_timeout(struct mutex *lock, unsigned int msecs) 258 { 259 unsigned int wait, delay = 10; 260 261 for (wait = 0; wait < msecs; wait += delay) { 262 if (mutex_trylock(lock)) 263 return 0; 264 265 msleep(delay); 266 } 267 268 return -1; 269 } 270 271 /** 272 * iavf_schedule_reset - Set the flags and schedule a reset event 273 * @adapter: board private structure 274 **/ 275 void iavf_schedule_reset(struct iavf_adapter *adapter) 276 { 277 if (!(adapter->flags & 278 (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) { 279 adapter->flags |= IAVF_FLAG_RESET_NEEDED; 280 queue_work(iavf_wq, &adapter->reset_task); 281 } 282 } 283 284 /** 285 * iavf_schedule_request_stats - Set the flags and schedule statistics request 286 * @adapter: board private structure 287 * 288 * Sets IAVF_FLAG_AQ_REQUEST_STATS flag so iavf_watchdog_task() will explicitly 289 * request and refresh ethtool stats 290 **/ 291 void iavf_schedule_request_stats(struct iavf_adapter *adapter) 292 { 293 adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_STATS; 294 mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0); 295 } 296 297 /** 298 * iavf_tx_timeout - Respond to a Tx Hang 299 * @netdev: network interface device structure 300 * @txqueue: queue number that is timing out 301 **/ 302 static void iavf_tx_timeout(struct net_device *netdev, unsigned int txqueue) 303 { 304 struct iavf_adapter *adapter = netdev_priv(netdev); 305 306 adapter->tx_timeout_count++; 307 iavf_schedule_reset(adapter); 308 } 309 310 /** 311 * iavf_misc_irq_disable - Mask off interrupt generation on the NIC 312 * @adapter: board private structure 313 **/ 314 static void iavf_misc_irq_disable(struct iavf_adapter *adapter) 315 { 316 struct iavf_hw *hw = &adapter->hw; 317 318 if (!adapter->msix_entries) 319 return; 320 321 wr32(hw, IAVF_VFINT_DYN_CTL01, 0); 322 323 iavf_flush(hw); 324 325 synchronize_irq(adapter->msix_entries[0].vector); 326 } 327 328 /** 329 * iavf_misc_irq_enable - Enable default interrupt generation settings 330 * @adapter: board private structure 331 **/ 332 static void iavf_misc_irq_enable(struct iavf_adapter *adapter) 333 { 334 struct iavf_hw *hw = &adapter->hw; 335 336 wr32(hw, IAVF_VFINT_DYN_CTL01, IAVF_VFINT_DYN_CTL01_INTENA_MASK | 337 IAVF_VFINT_DYN_CTL01_ITR_INDX_MASK); 338 wr32(hw, IAVF_VFINT_ICR0_ENA1, IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK); 339 340 iavf_flush(hw); 341 } 342 343 /** 344 * iavf_irq_disable - Mask off interrupt generation on the NIC 345 * @adapter: board private structure 346 **/ 347 static void iavf_irq_disable(struct iavf_adapter *adapter) 348 { 349 int i; 350 struct iavf_hw *hw = &adapter->hw; 351 352 if (!adapter->msix_entries) 353 return; 354 355 for (i = 1; i < adapter->num_msix_vectors; i++) { 356 wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 0); 357 synchronize_irq(adapter->msix_entries[i].vector); 358 } 359 iavf_flush(hw); 360 } 361 362 /** 363 * iavf_irq_enable_queues - Enable interrupt for specified queues 364 * @adapter: board private structure 365 * @mask: bitmap of queues to enable 366 **/ 367 void iavf_irq_enable_queues(struct iavf_adapter *adapter, u32 mask) 368 { 369 struct iavf_hw *hw = &adapter->hw; 370 int i; 371 372 for (i = 1; i < adapter->num_msix_vectors; i++) { 373 if (mask & BIT(i - 1)) { 374 wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 375 IAVF_VFINT_DYN_CTLN1_INTENA_MASK | 376 IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK); 377 } 378 } 379 } 380 381 /** 382 * iavf_irq_enable - Enable default interrupt generation settings 383 * @adapter: board private structure 384 * @flush: boolean value whether to run rd32() 385 **/ 386 void iavf_irq_enable(struct iavf_adapter *adapter, bool flush) 387 { 388 struct iavf_hw *hw = &adapter->hw; 389 390 iavf_misc_irq_enable(adapter); 391 iavf_irq_enable_queues(adapter, ~0); 392 393 if (flush) 394 iavf_flush(hw); 395 } 396 397 /** 398 * iavf_msix_aq - Interrupt handler for vector 0 399 * @irq: interrupt number 400 * @data: pointer to netdev 401 **/ 402 static irqreturn_t iavf_msix_aq(int irq, void *data) 403 { 404 struct net_device *netdev = data; 405 struct iavf_adapter *adapter = netdev_priv(netdev); 406 struct iavf_hw *hw = &adapter->hw; 407 408 /* handle non-queue interrupts, these reads clear the registers */ 409 rd32(hw, IAVF_VFINT_ICR01); 410 rd32(hw, IAVF_VFINT_ICR0_ENA1); 411 412 if (adapter->state != __IAVF_REMOVE) 413 /* schedule work on the private workqueue */ 414 queue_work(iavf_wq, &adapter->adminq_task); 415 416 return IRQ_HANDLED; 417 } 418 419 /** 420 * iavf_msix_clean_rings - MSIX mode Interrupt Handler 421 * @irq: interrupt number 422 * @data: pointer to a q_vector 423 **/ 424 static irqreturn_t iavf_msix_clean_rings(int irq, void *data) 425 { 426 struct iavf_q_vector *q_vector = data; 427 428 if (!q_vector->tx.ring && !q_vector->rx.ring) 429 return IRQ_HANDLED; 430 431 napi_schedule_irqoff(&q_vector->napi); 432 433 return IRQ_HANDLED; 434 } 435 436 /** 437 * iavf_map_vector_to_rxq - associate irqs with rx queues 438 * @adapter: board private structure 439 * @v_idx: interrupt number 440 * @r_idx: queue number 441 **/ 442 static void 443 iavf_map_vector_to_rxq(struct iavf_adapter *adapter, int v_idx, int r_idx) 444 { 445 struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx]; 446 struct iavf_ring *rx_ring = &adapter->rx_rings[r_idx]; 447 struct iavf_hw *hw = &adapter->hw; 448 449 rx_ring->q_vector = q_vector; 450 rx_ring->next = q_vector->rx.ring; 451 rx_ring->vsi = &adapter->vsi; 452 q_vector->rx.ring = rx_ring; 453 q_vector->rx.count++; 454 q_vector->rx.next_update = jiffies + 1; 455 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting); 456 q_vector->ring_mask |= BIT(r_idx); 457 wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR, q_vector->reg_idx), 458 q_vector->rx.current_itr >> 1); 459 q_vector->rx.current_itr = q_vector->rx.target_itr; 460 } 461 462 /** 463 * iavf_map_vector_to_txq - associate irqs with tx queues 464 * @adapter: board private structure 465 * @v_idx: interrupt number 466 * @t_idx: queue number 467 **/ 468 static void 469 iavf_map_vector_to_txq(struct iavf_adapter *adapter, int v_idx, int t_idx) 470 { 471 struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx]; 472 struct iavf_ring *tx_ring = &adapter->tx_rings[t_idx]; 473 struct iavf_hw *hw = &adapter->hw; 474 475 tx_ring->q_vector = q_vector; 476 tx_ring->next = q_vector->tx.ring; 477 tx_ring->vsi = &adapter->vsi; 478 q_vector->tx.ring = tx_ring; 479 q_vector->tx.count++; 480 q_vector->tx.next_update = jiffies + 1; 481 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting); 482 q_vector->num_ringpairs++; 483 wr32(hw, IAVF_VFINT_ITRN1(IAVF_TX_ITR, q_vector->reg_idx), 484 q_vector->tx.target_itr >> 1); 485 q_vector->tx.current_itr = q_vector->tx.target_itr; 486 } 487 488 /** 489 * iavf_map_rings_to_vectors - Maps descriptor rings to vectors 490 * @adapter: board private structure to initialize 491 * 492 * This function maps descriptor rings to the queue-specific vectors 493 * we were allotted through the MSI-X enabling code. Ideally, we'd have 494 * one vector per ring/queue, but on a constrained vector budget, we 495 * group the rings as "efficiently" as possible. You would add new 496 * mapping configurations in here. 497 **/ 498 static void iavf_map_rings_to_vectors(struct iavf_adapter *adapter) 499 { 500 int rings_remaining = adapter->num_active_queues; 501 int ridx = 0, vidx = 0; 502 int q_vectors; 503 504 q_vectors = adapter->num_msix_vectors - NONQ_VECS; 505 506 for (; ridx < rings_remaining; ridx++) { 507 iavf_map_vector_to_rxq(adapter, vidx, ridx); 508 iavf_map_vector_to_txq(adapter, vidx, ridx); 509 510 /* In the case where we have more queues than vectors, continue 511 * round-robin on vectors until all queues are mapped. 512 */ 513 if (++vidx >= q_vectors) 514 vidx = 0; 515 } 516 517 adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS; 518 } 519 520 /** 521 * iavf_irq_affinity_notify - Callback for affinity changes 522 * @notify: context as to what irq was changed 523 * @mask: the new affinity mask 524 * 525 * This is a callback function used by the irq_set_affinity_notifier function 526 * so that we may register to receive changes to the irq affinity masks. 527 **/ 528 static void iavf_irq_affinity_notify(struct irq_affinity_notify *notify, 529 const cpumask_t *mask) 530 { 531 struct iavf_q_vector *q_vector = 532 container_of(notify, struct iavf_q_vector, affinity_notify); 533 534 cpumask_copy(&q_vector->affinity_mask, mask); 535 } 536 537 /** 538 * iavf_irq_affinity_release - Callback for affinity notifier release 539 * @ref: internal core kernel usage 540 * 541 * This is a callback function used by the irq_set_affinity_notifier function 542 * to inform the current notification subscriber that they will no longer 543 * receive notifications. 544 **/ 545 static void iavf_irq_affinity_release(struct kref *ref) {} 546 547 /** 548 * iavf_request_traffic_irqs - Initialize MSI-X interrupts 549 * @adapter: board private structure 550 * @basename: device basename 551 * 552 * Allocates MSI-X vectors for tx and rx handling, and requests 553 * interrupts from the kernel. 554 **/ 555 static int 556 iavf_request_traffic_irqs(struct iavf_adapter *adapter, char *basename) 557 { 558 unsigned int vector, q_vectors; 559 unsigned int rx_int_idx = 0, tx_int_idx = 0; 560 int irq_num, err; 561 int cpu; 562 563 iavf_irq_disable(adapter); 564 /* Decrement for Other and TCP Timer vectors */ 565 q_vectors = adapter->num_msix_vectors - NONQ_VECS; 566 567 for (vector = 0; vector < q_vectors; vector++) { 568 struct iavf_q_vector *q_vector = &adapter->q_vectors[vector]; 569 570 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector; 571 572 if (q_vector->tx.ring && q_vector->rx.ring) { 573 snprintf(q_vector->name, sizeof(q_vector->name), 574 "iavf-%s-TxRx-%u", basename, rx_int_idx++); 575 tx_int_idx++; 576 } else if (q_vector->rx.ring) { 577 snprintf(q_vector->name, sizeof(q_vector->name), 578 "iavf-%s-rx-%u", basename, rx_int_idx++); 579 } else if (q_vector->tx.ring) { 580 snprintf(q_vector->name, sizeof(q_vector->name), 581 "iavf-%s-tx-%u", basename, tx_int_idx++); 582 } else { 583 /* skip this unused q_vector */ 584 continue; 585 } 586 err = request_irq(irq_num, 587 iavf_msix_clean_rings, 588 0, 589 q_vector->name, 590 q_vector); 591 if (err) { 592 dev_info(&adapter->pdev->dev, 593 "Request_irq failed, error: %d\n", err); 594 goto free_queue_irqs; 595 } 596 /* register for affinity change notifications */ 597 q_vector->affinity_notify.notify = iavf_irq_affinity_notify; 598 q_vector->affinity_notify.release = 599 iavf_irq_affinity_release; 600 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify); 601 /* Spread the IRQ affinity hints across online CPUs. Note that 602 * get_cpu_mask returns a mask with a permanent lifetime so 603 * it's safe to use as a hint for irq_update_affinity_hint. 604 */ 605 cpu = cpumask_local_spread(q_vector->v_idx, -1); 606 irq_update_affinity_hint(irq_num, get_cpu_mask(cpu)); 607 } 608 609 return 0; 610 611 free_queue_irqs: 612 while (vector) { 613 vector--; 614 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector; 615 irq_set_affinity_notifier(irq_num, NULL); 616 irq_update_affinity_hint(irq_num, NULL); 617 free_irq(irq_num, &adapter->q_vectors[vector]); 618 } 619 return err; 620 } 621 622 /** 623 * iavf_request_misc_irq - Initialize MSI-X interrupts 624 * @adapter: board private structure 625 * 626 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This 627 * vector is only for the admin queue, and stays active even when the netdev 628 * is closed. 629 **/ 630 static int iavf_request_misc_irq(struct iavf_adapter *adapter) 631 { 632 struct net_device *netdev = adapter->netdev; 633 int err; 634 635 snprintf(adapter->misc_vector_name, 636 sizeof(adapter->misc_vector_name) - 1, "iavf-%s:mbx", 637 dev_name(&adapter->pdev->dev)); 638 err = request_irq(adapter->msix_entries[0].vector, 639 &iavf_msix_aq, 0, 640 adapter->misc_vector_name, netdev); 641 if (err) { 642 dev_err(&adapter->pdev->dev, 643 "request_irq for %s failed: %d\n", 644 adapter->misc_vector_name, err); 645 free_irq(adapter->msix_entries[0].vector, netdev); 646 } 647 return err; 648 } 649 650 /** 651 * iavf_free_traffic_irqs - Free MSI-X interrupts 652 * @adapter: board private structure 653 * 654 * Frees all MSI-X vectors other than 0. 655 **/ 656 static void iavf_free_traffic_irqs(struct iavf_adapter *adapter) 657 { 658 int vector, irq_num, q_vectors; 659 660 if (!adapter->msix_entries) 661 return; 662 663 q_vectors = adapter->num_msix_vectors - NONQ_VECS; 664 665 for (vector = 0; vector < q_vectors; vector++) { 666 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector; 667 irq_set_affinity_notifier(irq_num, NULL); 668 irq_update_affinity_hint(irq_num, NULL); 669 free_irq(irq_num, &adapter->q_vectors[vector]); 670 } 671 } 672 673 /** 674 * iavf_free_misc_irq - Free MSI-X miscellaneous vector 675 * @adapter: board private structure 676 * 677 * Frees MSI-X vector 0. 678 **/ 679 static void iavf_free_misc_irq(struct iavf_adapter *adapter) 680 { 681 struct net_device *netdev = adapter->netdev; 682 683 if (!adapter->msix_entries) 684 return; 685 686 free_irq(adapter->msix_entries[0].vector, netdev); 687 } 688 689 /** 690 * iavf_configure_tx - Configure Transmit Unit after Reset 691 * @adapter: board private structure 692 * 693 * Configure the Tx unit of the MAC after a reset. 694 **/ 695 static void iavf_configure_tx(struct iavf_adapter *adapter) 696 { 697 struct iavf_hw *hw = &adapter->hw; 698 int i; 699 700 for (i = 0; i < adapter->num_active_queues; i++) 701 adapter->tx_rings[i].tail = hw->hw_addr + IAVF_QTX_TAIL1(i); 702 } 703 704 /** 705 * iavf_configure_rx - Configure Receive Unit after Reset 706 * @adapter: board private structure 707 * 708 * Configure the Rx unit of the MAC after a reset. 709 **/ 710 static void iavf_configure_rx(struct iavf_adapter *adapter) 711 { 712 unsigned int rx_buf_len = IAVF_RXBUFFER_2048; 713 struct iavf_hw *hw = &adapter->hw; 714 int i; 715 716 /* Legacy Rx will always default to a 2048 buffer size. */ 717 #if (PAGE_SIZE < 8192) 718 if (!(adapter->flags & IAVF_FLAG_LEGACY_RX)) { 719 struct net_device *netdev = adapter->netdev; 720 721 /* For jumbo frames on systems with 4K pages we have to use 722 * an order 1 page, so we might as well increase the size 723 * of our Rx buffer to make better use of the available space 724 */ 725 rx_buf_len = IAVF_RXBUFFER_3072; 726 727 /* We use a 1536 buffer size for configurations with 728 * standard Ethernet mtu. On x86 this gives us enough room 729 * for shared info and 192 bytes of padding. 730 */ 731 if (!IAVF_2K_TOO_SMALL_WITH_PADDING && 732 (netdev->mtu <= ETH_DATA_LEN)) 733 rx_buf_len = IAVF_RXBUFFER_1536 - NET_IP_ALIGN; 734 } 735 #endif 736 737 for (i = 0; i < adapter->num_active_queues; i++) { 738 adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i); 739 adapter->rx_rings[i].rx_buf_len = rx_buf_len; 740 741 if (adapter->flags & IAVF_FLAG_LEGACY_RX) 742 clear_ring_build_skb_enabled(&adapter->rx_rings[i]); 743 else 744 set_ring_build_skb_enabled(&adapter->rx_rings[i]); 745 } 746 } 747 748 /** 749 * iavf_find_vlan - Search filter list for specific vlan filter 750 * @adapter: board private structure 751 * @vlan: vlan tag 752 * 753 * Returns ptr to the filter object or NULL. Must be called while holding the 754 * mac_vlan_list_lock. 755 **/ 756 static struct 757 iavf_vlan_filter *iavf_find_vlan(struct iavf_adapter *adapter, 758 struct iavf_vlan vlan) 759 { 760 struct iavf_vlan_filter *f; 761 762 list_for_each_entry(f, &adapter->vlan_filter_list, list) { 763 if (f->vlan.vid == vlan.vid && 764 f->vlan.tpid == vlan.tpid) 765 return f; 766 } 767 768 return NULL; 769 } 770 771 /** 772 * iavf_add_vlan - Add a vlan filter to the list 773 * @adapter: board private structure 774 * @vlan: VLAN tag 775 * 776 * Returns ptr to the filter object or NULL when no memory available. 777 **/ 778 static struct 779 iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter, 780 struct iavf_vlan vlan) 781 { 782 struct iavf_vlan_filter *f = NULL; 783 784 spin_lock_bh(&adapter->mac_vlan_list_lock); 785 786 f = iavf_find_vlan(adapter, vlan); 787 if (!f) { 788 f = kzalloc(sizeof(*f), GFP_ATOMIC); 789 if (!f) 790 goto clearout; 791 792 f->vlan = vlan; 793 794 list_add_tail(&f->list, &adapter->vlan_filter_list); 795 f->add = true; 796 adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER; 797 } 798 799 clearout: 800 spin_unlock_bh(&adapter->mac_vlan_list_lock); 801 return f; 802 } 803 804 /** 805 * iavf_del_vlan - Remove a vlan filter from the list 806 * @adapter: board private structure 807 * @vlan: VLAN tag 808 **/ 809 static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan) 810 { 811 struct iavf_vlan_filter *f; 812 813 spin_lock_bh(&adapter->mac_vlan_list_lock); 814 815 f = iavf_find_vlan(adapter, vlan); 816 if (f) { 817 f->remove = true; 818 adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; 819 } 820 821 spin_unlock_bh(&adapter->mac_vlan_list_lock); 822 } 823 824 /** 825 * iavf_restore_filters 826 * @adapter: board private structure 827 * 828 * Restore existing non MAC filters when VF netdev comes back up 829 **/ 830 static void iavf_restore_filters(struct iavf_adapter *adapter) 831 { 832 u16 vid; 833 834 /* re-add all VLAN filters */ 835 for_each_set_bit(vid, adapter->vsi.active_cvlans, VLAN_N_VID) 836 iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021Q)); 837 838 for_each_set_bit(vid, adapter->vsi.active_svlans, VLAN_N_VID) 839 iavf_add_vlan(adapter, IAVF_VLAN(vid, ETH_P_8021AD)); 840 } 841 842 /** 843 * iavf_get_num_vlans_added - get number of VLANs added 844 * @adapter: board private structure 845 */ 846 u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter) 847 { 848 return bitmap_weight(adapter->vsi.active_cvlans, VLAN_N_VID) + 849 bitmap_weight(adapter->vsi.active_svlans, VLAN_N_VID); 850 } 851 852 /** 853 * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF 854 * @adapter: board private structure 855 * 856 * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN, 857 * do not impose a limit as that maintains current behavior and for 858 * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF. 859 **/ 860 static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter) 861 { 862 /* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has 863 * never been a limit on the VF driver side 864 */ 865 if (VLAN_ALLOWED(adapter)) 866 return VLAN_N_VID; 867 else if (VLAN_V2_ALLOWED(adapter)) 868 return adapter->vlan_v2_caps.filtering.max_filters; 869 870 return 0; 871 } 872 873 /** 874 * iavf_max_vlans_added - check if maximum VLANs allowed already exist 875 * @adapter: board private structure 876 **/ 877 static bool iavf_max_vlans_added(struct iavf_adapter *adapter) 878 { 879 if (iavf_get_num_vlans_added(adapter) < 880 iavf_get_max_vlans_allowed(adapter)) 881 return false; 882 883 return true; 884 } 885 886 /** 887 * iavf_vlan_rx_add_vid - Add a VLAN filter to a device 888 * @netdev: network device struct 889 * @proto: unused protocol data 890 * @vid: VLAN tag 891 **/ 892 static int iavf_vlan_rx_add_vid(struct net_device *netdev, 893 __always_unused __be16 proto, u16 vid) 894 { 895 struct iavf_adapter *adapter = netdev_priv(netdev); 896 897 if (!VLAN_FILTERING_ALLOWED(adapter)) 898 return -EIO; 899 900 if (iavf_max_vlans_added(adapter)) { 901 netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n", 902 iavf_get_max_vlans_allowed(adapter)); 903 return -EIO; 904 } 905 906 if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)))) 907 return -ENOMEM; 908 909 return 0; 910 } 911 912 /** 913 * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device 914 * @netdev: network device struct 915 * @proto: unused protocol data 916 * @vid: VLAN tag 917 **/ 918 static int iavf_vlan_rx_kill_vid(struct net_device *netdev, 919 __always_unused __be16 proto, u16 vid) 920 { 921 struct iavf_adapter *adapter = netdev_priv(netdev); 922 923 iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))); 924 if (proto == cpu_to_be16(ETH_P_8021Q)) 925 clear_bit(vid, adapter->vsi.active_cvlans); 926 else 927 clear_bit(vid, adapter->vsi.active_svlans); 928 929 return 0; 930 } 931 932 /** 933 * iavf_find_filter - Search filter list for specific mac filter 934 * @adapter: board private structure 935 * @macaddr: the MAC address 936 * 937 * Returns ptr to the filter object or NULL. Must be called while holding the 938 * mac_vlan_list_lock. 939 **/ 940 static struct 941 iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter, 942 const u8 *macaddr) 943 { 944 struct iavf_mac_filter *f; 945 946 if (!macaddr) 947 return NULL; 948 949 list_for_each_entry(f, &adapter->mac_filter_list, list) { 950 if (ether_addr_equal(macaddr, f->macaddr)) 951 return f; 952 } 953 return NULL; 954 } 955 956 /** 957 * iavf_add_filter - Add a mac filter to the filter list 958 * @adapter: board private structure 959 * @macaddr: the MAC address 960 * 961 * Returns ptr to the filter object or NULL when no memory available. 962 **/ 963 struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter, 964 const u8 *macaddr) 965 { 966 struct iavf_mac_filter *f; 967 968 if (!macaddr) 969 return NULL; 970 971 f = iavf_find_filter(adapter, macaddr); 972 if (!f) { 973 f = kzalloc(sizeof(*f), GFP_ATOMIC); 974 if (!f) 975 return f; 976 977 ether_addr_copy(f->macaddr, macaddr); 978 979 list_add_tail(&f->list, &adapter->mac_filter_list); 980 f->add = true; 981 f->add_handled = false; 982 f->is_new_mac = true; 983 f->is_primary = ether_addr_equal(macaddr, adapter->hw.mac.addr); 984 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 985 } else { 986 f->remove = false; 987 } 988 989 return f; 990 } 991 992 /** 993 * iavf_replace_primary_mac - Replace current primary address 994 * @adapter: board private structure 995 * @new_mac: new MAC address to be applied 996 * 997 * Replace current dev_addr and send request to PF for removal of previous 998 * primary MAC address filter and addition of new primary MAC filter. 999 * Return 0 for success, -ENOMEM for failure. 1000 * 1001 * Do not call this with mac_vlan_list_lock! 1002 **/ 1003 int iavf_replace_primary_mac(struct iavf_adapter *adapter, 1004 const u8 *new_mac) 1005 { 1006 struct iavf_hw *hw = &adapter->hw; 1007 struct iavf_mac_filter *f; 1008 1009 spin_lock_bh(&adapter->mac_vlan_list_lock); 1010 1011 list_for_each_entry(f, &adapter->mac_filter_list, list) { 1012 f->is_primary = false; 1013 } 1014 1015 f = iavf_find_filter(adapter, hw->mac.addr); 1016 if (f) { 1017 f->remove = true; 1018 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1019 } 1020 1021 f = iavf_add_filter(adapter, new_mac); 1022 1023 if (f) { 1024 /* Always send the request to add if changing primary MAC 1025 * even if filter is already present on the list 1026 */ 1027 f->is_primary = true; 1028 f->add = true; 1029 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 1030 ether_addr_copy(hw->mac.addr, new_mac); 1031 } 1032 1033 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1034 1035 /* schedule the watchdog task to immediately process the request */ 1036 if (f) { 1037 queue_work(iavf_wq, &adapter->watchdog_task.work); 1038 return 0; 1039 } 1040 return -ENOMEM; 1041 } 1042 1043 /** 1044 * iavf_is_mac_set_handled - wait for a response to set MAC from PF 1045 * @netdev: network interface device structure 1046 * @macaddr: MAC address to set 1047 * 1048 * Returns true on success, false on failure 1049 */ 1050 static bool iavf_is_mac_set_handled(struct net_device *netdev, 1051 const u8 *macaddr) 1052 { 1053 struct iavf_adapter *adapter = netdev_priv(netdev); 1054 struct iavf_mac_filter *f; 1055 bool ret = false; 1056 1057 spin_lock_bh(&adapter->mac_vlan_list_lock); 1058 1059 f = iavf_find_filter(adapter, macaddr); 1060 1061 if (!f || (!f->add && f->add_handled)) 1062 ret = true; 1063 1064 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1065 1066 return ret; 1067 } 1068 1069 /** 1070 * iavf_set_mac - NDO callback to set port MAC address 1071 * @netdev: network interface device structure 1072 * @p: pointer to an address structure 1073 * 1074 * Returns 0 on success, negative on failure 1075 */ 1076 static int iavf_set_mac(struct net_device *netdev, void *p) 1077 { 1078 struct iavf_adapter *adapter = netdev_priv(netdev); 1079 struct sockaddr *addr = p; 1080 bool handle_mac = iavf_is_mac_set_handled(netdev, addr->sa_data); 1081 int ret; 1082 1083 if (!is_valid_ether_addr(addr->sa_data)) 1084 return -EADDRNOTAVAIL; 1085 1086 ret = iavf_replace_primary_mac(adapter, addr->sa_data); 1087 1088 if (ret) 1089 return ret; 1090 1091 /* If this is an initial set MAC during VF spawn do not wait */ 1092 if (adapter->flags & IAVF_FLAG_INITIAL_MAC_SET) { 1093 adapter->flags &= ~IAVF_FLAG_INITIAL_MAC_SET; 1094 return 0; 1095 } 1096 1097 if (handle_mac) 1098 goto done; 1099 1100 ret = wait_event_interruptible_timeout(adapter->vc_waitqueue, false, msecs_to_jiffies(2500)); 1101 1102 /* If ret < 0 then it means wait was interrupted. 1103 * If ret == 0 then it means we got a timeout. 1104 * else it means we got response for set MAC from PF, 1105 * check if netdev MAC was updated to requested MAC, 1106 * if yes then set MAC succeeded otherwise it failed return -EACCES 1107 */ 1108 if (ret < 0) 1109 return ret; 1110 1111 if (!ret) 1112 return -EAGAIN; 1113 1114 done: 1115 if (!ether_addr_equal(netdev->dev_addr, addr->sa_data)) 1116 return -EACCES; 1117 1118 return 0; 1119 } 1120 1121 /** 1122 * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address 1123 * @netdev: the netdevice 1124 * @addr: address to add 1125 * 1126 * Called by __dev_(mc|uc)_sync when an address needs to be added. We call 1127 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1128 */ 1129 static int iavf_addr_sync(struct net_device *netdev, const u8 *addr) 1130 { 1131 struct iavf_adapter *adapter = netdev_priv(netdev); 1132 1133 if (iavf_add_filter(adapter, addr)) 1134 return 0; 1135 else 1136 return -ENOMEM; 1137 } 1138 1139 /** 1140 * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address 1141 * @netdev: the netdevice 1142 * @addr: address to add 1143 * 1144 * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call 1145 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1146 */ 1147 static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr) 1148 { 1149 struct iavf_adapter *adapter = netdev_priv(netdev); 1150 struct iavf_mac_filter *f; 1151 1152 /* Under some circumstances, we might receive a request to delete 1153 * our own device address from our uc list. Because we store the 1154 * device address in the VSI's MAC/VLAN filter list, we need to ignore 1155 * such requests and not delete our device address from this list. 1156 */ 1157 if (ether_addr_equal(addr, netdev->dev_addr)) 1158 return 0; 1159 1160 f = iavf_find_filter(adapter, addr); 1161 if (f) { 1162 f->remove = true; 1163 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1164 } 1165 return 0; 1166 } 1167 1168 /** 1169 * iavf_set_rx_mode - NDO callback to set the netdev filters 1170 * @netdev: network interface device structure 1171 **/ 1172 static void iavf_set_rx_mode(struct net_device *netdev) 1173 { 1174 struct iavf_adapter *adapter = netdev_priv(netdev); 1175 1176 spin_lock_bh(&adapter->mac_vlan_list_lock); 1177 __dev_uc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); 1178 __dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); 1179 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1180 1181 if (netdev->flags & IFF_PROMISC && 1182 !(adapter->flags & IAVF_FLAG_PROMISC_ON)) 1183 adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_PROMISC; 1184 else if (!(netdev->flags & IFF_PROMISC) && 1185 adapter->flags & IAVF_FLAG_PROMISC_ON) 1186 adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_PROMISC; 1187 1188 if (netdev->flags & IFF_ALLMULTI && 1189 !(adapter->flags & IAVF_FLAG_ALLMULTI_ON)) 1190 adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_ALLMULTI; 1191 else if (!(netdev->flags & IFF_ALLMULTI) && 1192 adapter->flags & IAVF_FLAG_ALLMULTI_ON) 1193 adapter->aq_required |= IAVF_FLAG_AQ_RELEASE_ALLMULTI; 1194 } 1195 1196 /** 1197 * iavf_napi_enable_all - enable NAPI on all queue vectors 1198 * @adapter: board private structure 1199 **/ 1200 static void iavf_napi_enable_all(struct iavf_adapter *adapter) 1201 { 1202 int q_idx; 1203 struct iavf_q_vector *q_vector; 1204 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1205 1206 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1207 struct napi_struct *napi; 1208 1209 q_vector = &adapter->q_vectors[q_idx]; 1210 napi = &q_vector->napi; 1211 napi_enable(napi); 1212 } 1213 } 1214 1215 /** 1216 * iavf_napi_disable_all - disable NAPI on all queue vectors 1217 * @adapter: board private structure 1218 **/ 1219 static void iavf_napi_disable_all(struct iavf_adapter *adapter) 1220 { 1221 int q_idx; 1222 struct iavf_q_vector *q_vector; 1223 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1224 1225 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1226 q_vector = &adapter->q_vectors[q_idx]; 1227 napi_disable(&q_vector->napi); 1228 } 1229 } 1230 1231 /** 1232 * iavf_configure - set up transmit and receive data structures 1233 * @adapter: board private structure 1234 **/ 1235 static void iavf_configure(struct iavf_adapter *adapter) 1236 { 1237 struct net_device *netdev = adapter->netdev; 1238 int i; 1239 1240 iavf_set_rx_mode(netdev); 1241 1242 iavf_configure_tx(adapter); 1243 iavf_configure_rx(adapter); 1244 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES; 1245 1246 for (i = 0; i < adapter->num_active_queues; i++) { 1247 struct iavf_ring *ring = &adapter->rx_rings[i]; 1248 1249 iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring)); 1250 } 1251 } 1252 1253 /** 1254 * iavf_up_complete - Finish the last steps of bringing up a connection 1255 * @adapter: board private structure 1256 * 1257 * Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock. 1258 **/ 1259 static void iavf_up_complete(struct iavf_adapter *adapter) 1260 { 1261 iavf_change_state(adapter, __IAVF_RUNNING); 1262 clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1263 1264 iavf_napi_enable_all(adapter); 1265 1266 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES; 1267 if (CLIENT_ENABLED(adapter)) 1268 adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_OPEN; 1269 mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0); 1270 } 1271 1272 /** 1273 * iavf_down - Shutdown the connection processing 1274 * @adapter: board private structure 1275 * 1276 * Expects to be called while holding the __IAVF_IN_CRITICAL_TASK bit lock. 1277 **/ 1278 void iavf_down(struct iavf_adapter *adapter) 1279 { 1280 struct net_device *netdev = adapter->netdev; 1281 struct iavf_vlan_filter *vlf; 1282 struct iavf_cloud_filter *cf; 1283 struct iavf_fdir_fltr *fdir; 1284 struct iavf_mac_filter *f; 1285 struct iavf_adv_rss *rss; 1286 1287 if (adapter->state <= __IAVF_DOWN_PENDING) 1288 return; 1289 1290 netif_carrier_off(netdev); 1291 netif_tx_disable(netdev); 1292 adapter->link_up = false; 1293 iavf_napi_disable_all(adapter); 1294 iavf_irq_disable(adapter); 1295 1296 spin_lock_bh(&adapter->mac_vlan_list_lock); 1297 1298 /* clear the sync flag on all filters */ 1299 __dev_uc_unsync(adapter->netdev, NULL); 1300 __dev_mc_unsync(adapter->netdev, NULL); 1301 1302 /* remove all MAC filters */ 1303 list_for_each_entry(f, &adapter->mac_filter_list, list) { 1304 f->remove = true; 1305 } 1306 1307 /* remove all VLAN filters */ 1308 list_for_each_entry(vlf, &adapter->vlan_filter_list, list) { 1309 vlf->remove = true; 1310 } 1311 1312 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1313 1314 /* remove all cloud filters */ 1315 spin_lock_bh(&adapter->cloud_filter_list_lock); 1316 list_for_each_entry(cf, &adapter->cloud_filter_list, list) { 1317 cf->del = true; 1318 } 1319 spin_unlock_bh(&adapter->cloud_filter_list_lock); 1320 1321 /* remove all Flow Director filters */ 1322 spin_lock_bh(&adapter->fdir_fltr_lock); 1323 list_for_each_entry(fdir, &adapter->fdir_list_head, list) { 1324 fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST; 1325 } 1326 spin_unlock_bh(&adapter->fdir_fltr_lock); 1327 1328 /* remove all advance RSS configuration */ 1329 spin_lock_bh(&adapter->adv_rss_lock); 1330 list_for_each_entry(rss, &adapter->adv_rss_list_head, list) 1331 rss->state = IAVF_ADV_RSS_DEL_REQUEST; 1332 spin_unlock_bh(&adapter->adv_rss_lock); 1333 1334 if (!(adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)) { 1335 /* cancel any current operation */ 1336 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 1337 /* Schedule operations to close down the HW. Don't wait 1338 * here for this to complete. The watchdog is still running 1339 * and it will take care of this. 1340 */ 1341 adapter->aq_required = IAVF_FLAG_AQ_DEL_MAC_FILTER; 1342 adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; 1343 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 1344 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 1345 adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG; 1346 adapter->aq_required |= IAVF_FLAG_AQ_DISABLE_QUEUES; 1347 } 1348 1349 mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0); 1350 } 1351 1352 /** 1353 * iavf_acquire_msix_vectors - Setup the MSIX capability 1354 * @adapter: board private structure 1355 * @vectors: number of vectors to request 1356 * 1357 * Work with the OS to set up the MSIX vectors needed. 1358 * 1359 * Returns 0 on success, negative on failure 1360 **/ 1361 static int 1362 iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors) 1363 { 1364 int err, vector_threshold; 1365 1366 /* We'll want at least 3 (vector_threshold): 1367 * 0) Other (Admin Queue and link, mostly) 1368 * 1) TxQ[0] Cleanup 1369 * 2) RxQ[0] Cleanup 1370 */ 1371 vector_threshold = MIN_MSIX_COUNT; 1372 1373 /* The more we get, the more we will assign to Tx/Rx Cleanup 1374 * for the separate queues...where Rx Cleanup >= Tx Cleanup. 1375 * Right now, we simply care about how many we'll get; we'll 1376 * set them up later while requesting irq's. 1377 */ 1378 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, 1379 vector_threshold, vectors); 1380 if (err < 0) { 1381 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); 1382 kfree(adapter->msix_entries); 1383 adapter->msix_entries = NULL; 1384 return err; 1385 } 1386 1387 /* Adjust for only the vectors we'll use, which is minimum 1388 * of max_msix_q_vectors + NONQ_VECS, or the number of 1389 * vectors we were allocated. 1390 */ 1391 adapter->num_msix_vectors = err; 1392 return 0; 1393 } 1394 1395 /** 1396 * iavf_free_queues - Free memory for all rings 1397 * @adapter: board private structure to initialize 1398 * 1399 * Free all of the memory associated with queue pairs. 1400 **/ 1401 static void iavf_free_queues(struct iavf_adapter *adapter) 1402 { 1403 if (!adapter->vsi_res) 1404 return; 1405 adapter->num_active_queues = 0; 1406 kfree(adapter->tx_rings); 1407 adapter->tx_rings = NULL; 1408 kfree(adapter->rx_rings); 1409 adapter->rx_rings = NULL; 1410 } 1411 1412 /** 1413 * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload 1414 * @adapter: board private structure 1415 * 1416 * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or 1417 * stripped in certain descriptor fields. Instead of checking the offload 1418 * capability bits in the hot path, cache the location the ring specific 1419 * flags. 1420 */ 1421 void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter) 1422 { 1423 int i; 1424 1425 for (i = 0; i < adapter->num_active_queues; i++) { 1426 struct iavf_ring *tx_ring = &adapter->tx_rings[i]; 1427 struct iavf_ring *rx_ring = &adapter->rx_rings[i]; 1428 1429 /* prevent multiple L2TAG bits being set after VFR */ 1430 tx_ring->flags &= 1431 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1432 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2); 1433 rx_ring->flags &= 1434 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1435 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2); 1436 1437 if (VLAN_ALLOWED(adapter)) { 1438 tx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1439 rx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1440 } else if (VLAN_V2_ALLOWED(adapter)) { 1441 struct virtchnl_vlan_supported_caps *stripping_support; 1442 struct virtchnl_vlan_supported_caps *insertion_support; 1443 1444 stripping_support = 1445 &adapter->vlan_v2_caps.offloads.stripping_support; 1446 insertion_support = 1447 &adapter->vlan_v2_caps.offloads.insertion_support; 1448 1449 if (stripping_support->outer) { 1450 if (stripping_support->outer & 1451 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1452 rx_ring->flags |= 1453 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1454 else if (stripping_support->outer & 1455 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1456 rx_ring->flags |= 1457 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1458 } else if (stripping_support->inner) { 1459 if (stripping_support->inner & 1460 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1461 rx_ring->flags |= 1462 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1463 else if (stripping_support->inner & 1464 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1465 rx_ring->flags |= 1466 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1467 } 1468 1469 if (insertion_support->outer) { 1470 if (insertion_support->outer & 1471 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1472 tx_ring->flags |= 1473 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1474 else if (insertion_support->outer & 1475 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1476 tx_ring->flags |= 1477 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1478 } else if (insertion_support->inner) { 1479 if (insertion_support->inner & 1480 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1481 tx_ring->flags |= 1482 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1483 else if (insertion_support->inner & 1484 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1485 tx_ring->flags |= 1486 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1487 } 1488 } 1489 } 1490 } 1491 1492 /** 1493 * iavf_alloc_queues - Allocate memory for all rings 1494 * @adapter: board private structure to initialize 1495 * 1496 * We allocate one ring per queue at run-time since we don't know the 1497 * number of queues at compile-time. The polling_netdev array is 1498 * intended for Multiqueue, but should work fine with a single queue. 1499 **/ 1500 static int iavf_alloc_queues(struct iavf_adapter *adapter) 1501 { 1502 int i, num_active_queues; 1503 1504 /* If we're in reset reallocating queues we don't actually know yet for 1505 * certain the PF gave us the number of queues we asked for but we'll 1506 * assume it did. Once basic reset is finished we'll confirm once we 1507 * start negotiating config with PF. 1508 */ 1509 if (adapter->num_req_queues) 1510 num_active_queues = adapter->num_req_queues; 1511 else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1512 adapter->num_tc) 1513 num_active_queues = adapter->ch_config.total_qps; 1514 else 1515 num_active_queues = min_t(int, 1516 adapter->vsi_res->num_queue_pairs, 1517 (int)(num_online_cpus())); 1518 1519 1520 adapter->tx_rings = kcalloc(num_active_queues, 1521 sizeof(struct iavf_ring), GFP_KERNEL); 1522 if (!adapter->tx_rings) 1523 goto err_out; 1524 adapter->rx_rings = kcalloc(num_active_queues, 1525 sizeof(struct iavf_ring), GFP_KERNEL); 1526 if (!adapter->rx_rings) 1527 goto err_out; 1528 1529 for (i = 0; i < num_active_queues; i++) { 1530 struct iavf_ring *tx_ring; 1531 struct iavf_ring *rx_ring; 1532 1533 tx_ring = &adapter->tx_rings[i]; 1534 1535 tx_ring->queue_index = i; 1536 tx_ring->netdev = adapter->netdev; 1537 tx_ring->dev = &adapter->pdev->dev; 1538 tx_ring->count = adapter->tx_desc_count; 1539 tx_ring->itr_setting = IAVF_ITR_TX_DEF; 1540 if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE) 1541 tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR; 1542 1543 rx_ring = &adapter->rx_rings[i]; 1544 rx_ring->queue_index = i; 1545 rx_ring->netdev = adapter->netdev; 1546 rx_ring->dev = &adapter->pdev->dev; 1547 rx_ring->count = adapter->rx_desc_count; 1548 rx_ring->itr_setting = IAVF_ITR_RX_DEF; 1549 } 1550 1551 adapter->num_active_queues = num_active_queues; 1552 1553 iavf_set_queue_vlan_tag_loc(adapter); 1554 1555 return 0; 1556 1557 err_out: 1558 iavf_free_queues(adapter); 1559 return -ENOMEM; 1560 } 1561 1562 /** 1563 * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported 1564 * @adapter: board private structure to initialize 1565 * 1566 * Attempt to configure the interrupts using the best available 1567 * capabilities of the hardware and the kernel. 1568 **/ 1569 static int iavf_set_interrupt_capability(struct iavf_adapter *adapter) 1570 { 1571 int vector, v_budget; 1572 int pairs = 0; 1573 int err = 0; 1574 1575 if (!adapter->vsi_res) { 1576 err = -EIO; 1577 goto out; 1578 } 1579 pairs = adapter->num_active_queues; 1580 1581 /* It's easy to be greedy for MSI-X vectors, but it really doesn't do 1582 * us much good if we have more vectors than CPUs. However, we already 1583 * limit the total number of queues by the number of CPUs so we do not 1584 * need any further limiting here. 1585 */ 1586 v_budget = min_t(int, pairs + NONQ_VECS, 1587 (int)adapter->vf_res->max_vectors); 1588 1589 adapter->msix_entries = kcalloc(v_budget, 1590 sizeof(struct msix_entry), GFP_KERNEL); 1591 if (!adapter->msix_entries) { 1592 err = -ENOMEM; 1593 goto out; 1594 } 1595 1596 for (vector = 0; vector < v_budget; vector++) 1597 adapter->msix_entries[vector].entry = vector; 1598 1599 err = iavf_acquire_msix_vectors(adapter, v_budget); 1600 1601 out: 1602 netif_set_real_num_rx_queues(adapter->netdev, pairs); 1603 netif_set_real_num_tx_queues(adapter->netdev, pairs); 1604 return err; 1605 } 1606 1607 /** 1608 * iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands 1609 * @adapter: board private structure 1610 * 1611 * Return 0 on success, negative on failure 1612 **/ 1613 static int iavf_config_rss_aq(struct iavf_adapter *adapter) 1614 { 1615 struct iavf_aqc_get_set_rss_key_data *rss_key = 1616 (struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key; 1617 struct iavf_hw *hw = &adapter->hw; 1618 enum iavf_status status; 1619 1620 if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) { 1621 /* bail because we already have a command pending */ 1622 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", 1623 adapter->current_op); 1624 return -EBUSY; 1625 } 1626 1627 status = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); 1628 if (status) { 1629 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", 1630 iavf_stat_str(hw, status), 1631 iavf_aq_str(hw, hw->aq.asq_last_status)); 1632 return iavf_status_to_errno(status); 1633 1634 } 1635 1636 status = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false, 1637 adapter->rss_lut, adapter->rss_lut_size); 1638 if (status) { 1639 dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", 1640 iavf_stat_str(hw, status), 1641 iavf_aq_str(hw, hw->aq.asq_last_status)); 1642 return iavf_status_to_errno(status); 1643 } 1644 1645 return 0; 1646 1647 } 1648 1649 /** 1650 * iavf_config_rss_reg - Configure RSS keys and lut by writing registers 1651 * @adapter: board private structure 1652 * 1653 * Returns 0 on success, negative on failure 1654 **/ 1655 static int iavf_config_rss_reg(struct iavf_adapter *adapter) 1656 { 1657 struct iavf_hw *hw = &adapter->hw; 1658 u32 *dw; 1659 u16 i; 1660 1661 dw = (u32 *)adapter->rss_key; 1662 for (i = 0; i <= adapter->rss_key_size / 4; i++) 1663 wr32(hw, IAVF_VFQF_HKEY(i), dw[i]); 1664 1665 dw = (u32 *)adapter->rss_lut; 1666 for (i = 0; i <= adapter->rss_lut_size / 4; i++) 1667 wr32(hw, IAVF_VFQF_HLUT(i), dw[i]); 1668 1669 iavf_flush(hw); 1670 1671 return 0; 1672 } 1673 1674 /** 1675 * iavf_config_rss - Configure RSS keys and lut 1676 * @adapter: board private structure 1677 * 1678 * Returns 0 on success, negative on failure 1679 **/ 1680 int iavf_config_rss(struct iavf_adapter *adapter) 1681 { 1682 1683 if (RSS_PF(adapter)) { 1684 adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT | 1685 IAVF_FLAG_AQ_SET_RSS_KEY; 1686 return 0; 1687 } else if (RSS_AQ(adapter)) { 1688 return iavf_config_rss_aq(adapter); 1689 } else { 1690 return iavf_config_rss_reg(adapter); 1691 } 1692 } 1693 1694 /** 1695 * iavf_fill_rss_lut - Fill the lut with default values 1696 * @adapter: board private structure 1697 **/ 1698 static void iavf_fill_rss_lut(struct iavf_adapter *adapter) 1699 { 1700 u16 i; 1701 1702 for (i = 0; i < adapter->rss_lut_size; i++) 1703 adapter->rss_lut[i] = i % adapter->num_active_queues; 1704 } 1705 1706 /** 1707 * iavf_init_rss - Prepare for RSS 1708 * @adapter: board private structure 1709 * 1710 * Return 0 on success, negative on failure 1711 **/ 1712 static int iavf_init_rss(struct iavf_adapter *adapter) 1713 { 1714 struct iavf_hw *hw = &adapter->hw; 1715 1716 if (!RSS_PF(adapter)) { 1717 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ 1718 if (adapter->vf_res->vf_cap_flags & 1719 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) 1720 adapter->hena = IAVF_DEFAULT_RSS_HENA_EXPANDED; 1721 else 1722 adapter->hena = IAVF_DEFAULT_RSS_HENA; 1723 1724 wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->hena); 1725 wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->hena >> 32)); 1726 } 1727 1728 iavf_fill_rss_lut(adapter); 1729 netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); 1730 1731 return iavf_config_rss(adapter); 1732 } 1733 1734 /** 1735 * iavf_alloc_q_vectors - Allocate memory for interrupt vectors 1736 * @adapter: board private structure to initialize 1737 * 1738 * We allocate one q_vector per queue interrupt. If allocation fails we 1739 * return -ENOMEM. 1740 **/ 1741 static int iavf_alloc_q_vectors(struct iavf_adapter *adapter) 1742 { 1743 int q_idx = 0, num_q_vectors; 1744 struct iavf_q_vector *q_vector; 1745 1746 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1747 adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector), 1748 GFP_KERNEL); 1749 if (!adapter->q_vectors) 1750 return -ENOMEM; 1751 1752 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1753 q_vector = &adapter->q_vectors[q_idx]; 1754 q_vector->adapter = adapter; 1755 q_vector->vsi = &adapter->vsi; 1756 q_vector->v_idx = q_idx; 1757 q_vector->reg_idx = q_idx; 1758 cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask); 1759 netif_napi_add(adapter->netdev, &q_vector->napi, 1760 iavf_napi_poll, NAPI_POLL_WEIGHT); 1761 } 1762 1763 return 0; 1764 } 1765 1766 /** 1767 * iavf_free_q_vectors - Free memory allocated for interrupt vectors 1768 * @adapter: board private structure to initialize 1769 * 1770 * This function frees the memory allocated to the q_vectors. In addition if 1771 * NAPI is enabled it will delete any references to the NAPI struct prior 1772 * to freeing the q_vector. 1773 **/ 1774 static void iavf_free_q_vectors(struct iavf_adapter *adapter) 1775 { 1776 int q_idx, num_q_vectors; 1777 int napi_vectors; 1778 1779 if (!adapter->q_vectors) 1780 return; 1781 1782 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1783 napi_vectors = adapter->num_active_queues; 1784 1785 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1786 struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx]; 1787 1788 if (q_idx < napi_vectors) 1789 netif_napi_del(&q_vector->napi); 1790 } 1791 kfree(adapter->q_vectors); 1792 adapter->q_vectors = NULL; 1793 } 1794 1795 /** 1796 * iavf_reset_interrupt_capability - Reset MSIX setup 1797 * @adapter: board private structure 1798 * 1799 **/ 1800 void iavf_reset_interrupt_capability(struct iavf_adapter *adapter) 1801 { 1802 if (!adapter->msix_entries) 1803 return; 1804 1805 pci_disable_msix(adapter->pdev); 1806 kfree(adapter->msix_entries); 1807 adapter->msix_entries = NULL; 1808 } 1809 1810 /** 1811 * iavf_init_interrupt_scheme - Determine if MSIX is supported and init 1812 * @adapter: board private structure to initialize 1813 * 1814 **/ 1815 int iavf_init_interrupt_scheme(struct iavf_adapter *adapter) 1816 { 1817 int err; 1818 1819 err = iavf_alloc_queues(adapter); 1820 if (err) { 1821 dev_err(&adapter->pdev->dev, 1822 "Unable to allocate memory for queues\n"); 1823 goto err_alloc_queues; 1824 } 1825 1826 rtnl_lock(); 1827 err = iavf_set_interrupt_capability(adapter); 1828 rtnl_unlock(); 1829 if (err) { 1830 dev_err(&adapter->pdev->dev, 1831 "Unable to setup interrupt capabilities\n"); 1832 goto err_set_interrupt; 1833 } 1834 1835 err = iavf_alloc_q_vectors(adapter); 1836 if (err) { 1837 dev_err(&adapter->pdev->dev, 1838 "Unable to allocate memory for queue vectors\n"); 1839 goto err_alloc_q_vectors; 1840 } 1841 1842 /* If we've made it so far while ADq flag being ON, then we haven't 1843 * bailed out anywhere in middle. And ADq isn't just enabled but actual 1844 * resources have been allocated in the reset path. 1845 * Now we can truly claim that ADq is enabled. 1846 */ 1847 if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1848 adapter->num_tc) 1849 dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created", 1850 adapter->num_tc); 1851 1852 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", 1853 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", 1854 adapter->num_active_queues); 1855 1856 return 0; 1857 err_alloc_q_vectors: 1858 iavf_reset_interrupt_capability(adapter); 1859 err_set_interrupt: 1860 iavf_free_queues(adapter); 1861 err_alloc_queues: 1862 return err; 1863 } 1864 1865 /** 1866 * iavf_free_rss - Free memory used by RSS structs 1867 * @adapter: board private structure 1868 **/ 1869 static void iavf_free_rss(struct iavf_adapter *adapter) 1870 { 1871 kfree(adapter->rss_key); 1872 adapter->rss_key = NULL; 1873 1874 kfree(adapter->rss_lut); 1875 adapter->rss_lut = NULL; 1876 } 1877 1878 /** 1879 * iavf_reinit_interrupt_scheme - Reallocate queues and vectors 1880 * @adapter: board private structure 1881 * 1882 * Returns 0 on success, negative on failure 1883 **/ 1884 static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter) 1885 { 1886 struct net_device *netdev = adapter->netdev; 1887 int err; 1888 1889 if (netif_running(netdev)) 1890 iavf_free_traffic_irqs(adapter); 1891 iavf_free_misc_irq(adapter); 1892 iavf_reset_interrupt_capability(adapter); 1893 iavf_free_q_vectors(adapter); 1894 iavf_free_queues(adapter); 1895 1896 err = iavf_init_interrupt_scheme(adapter); 1897 if (err) 1898 goto err; 1899 1900 netif_tx_stop_all_queues(netdev); 1901 1902 err = iavf_request_misc_irq(adapter); 1903 if (err) 1904 goto err; 1905 1906 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1907 1908 iavf_map_rings_to_vectors(adapter); 1909 err: 1910 return err; 1911 } 1912 1913 /** 1914 * iavf_process_aq_command - process aq_required flags 1915 * and sends aq command 1916 * @adapter: pointer to iavf adapter structure 1917 * 1918 * Returns 0 on success 1919 * Returns error code if no command was sent 1920 * or error code if the command failed. 1921 **/ 1922 static int iavf_process_aq_command(struct iavf_adapter *adapter) 1923 { 1924 if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG) 1925 return iavf_send_vf_config_msg(adapter); 1926 if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS) 1927 return iavf_send_vf_offload_vlan_v2_msg(adapter); 1928 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) { 1929 iavf_disable_queues(adapter); 1930 return 0; 1931 } 1932 1933 if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) { 1934 iavf_map_queues(adapter); 1935 return 0; 1936 } 1937 1938 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) { 1939 iavf_add_ether_addrs(adapter); 1940 return 0; 1941 } 1942 1943 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) { 1944 iavf_add_vlans(adapter); 1945 return 0; 1946 } 1947 1948 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) { 1949 iavf_del_ether_addrs(adapter); 1950 return 0; 1951 } 1952 1953 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) { 1954 iavf_del_vlans(adapter); 1955 return 0; 1956 } 1957 1958 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) { 1959 iavf_enable_vlan_stripping(adapter); 1960 return 0; 1961 } 1962 1963 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) { 1964 iavf_disable_vlan_stripping(adapter); 1965 return 0; 1966 } 1967 1968 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) { 1969 iavf_configure_queues(adapter); 1970 return 0; 1971 } 1972 1973 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) { 1974 iavf_enable_queues(adapter); 1975 return 0; 1976 } 1977 1978 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) { 1979 /* This message goes straight to the firmware, not the 1980 * PF, so we don't have to set current_op as we will 1981 * not get a response through the ARQ. 1982 */ 1983 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS; 1984 return 0; 1985 } 1986 if (adapter->aq_required & IAVF_FLAG_AQ_GET_HENA) { 1987 iavf_get_hena(adapter); 1988 return 0; 1989 } 1990 if (adapter->aq_required & IAVF_FLAG_AQ_SET_HENA) { 1991 iavf_set_hena(adapter); 1992 return 0; 1993 } 1994 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) { 1995 iavf_set_rss_key(adapter); 1996 return 0; 1997 } 1998 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) { 1999 iavf_set_rss_lut(adapter); 2000 return 0; 2001 } 2002 2003 if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_PROMISC) { 2004 iavf_set_promiscuous(adapter, FLAG_VF_UNICAST_PROMISC | 2005 FLAG_VF_MULTICAST_PROMISC); 2006 return 0; 2007 } 2008 2009 if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_ALLMULTI) { 2010 iavf_set_promiscuous(adapter, FLAG_VF_MULTICAST_PROMISC); 2011 return 0; 2012 } 2013 if ((adapter->aq_required & IAVF_FLAG_AQ_RELEASE_PROMISC) || 2014 (adapter->aq_required & IAVF_FLAG_AQ_RELEASE_ALLMULTI)) { 2015 iavf_set_promiscuous(adapter, 0); 2016 return 0; 2017 } 2018 2019 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) { 2020 iavf_enable_channels(adapter); 2021 return 0; 2022 } 2023 2024 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) { 2025 iavf_disable_channels(adapter); 2026 return 0; 2027 } 2028 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) { 2029 iavf_add_cloud_filter(adapter); 2030 return 0; 2031 } 2032 2033 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) { 2034 iavf_del_cloud_filter(adapter); 2035 return 0; 2036 } 2037 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) { 2038 iavf_del_cloud_filter(adapter); 2039 return 0; 2040 } 2041 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) { 2042 iavf_add_cloud_filter(adapter); 2043 return 0; 2044 } 2045 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) { 2046 iavf_add_fdir_filter(adapter); 2047 return IAVF_SUCCESS; 2048 } 2049 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) { 2050 iavf_del_fdir_filter(adapter); 2051 return IAVF_SUCCESS; 2052 } 2053 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) { 2054 iavf_add_adv_rss_cfg(adapter); 2055 return 0; 2056 } 2057 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) { 2058 iavf_del_adv_rss_cfg(adapter); 2059 return 0; 2060 } 2061 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) { 2062 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2063 return 0; 2064 } 2065 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) { 2066 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2067 return 0; 2068 } 2069 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) { 2070 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2071 return 0; 2072 } 2073 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) { 2074 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2075 return 0; 2076 } 2077 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) { 2078 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2079 return 0; 2080 } 2081 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) { 2082 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2083 return 0; 2084 } 2085 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) { 2086 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2087 return 0; 2088 } 2089 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) { 2090 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2091 return 0; 2092 } 2093 2094 if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) { 2095 iavf_request_stats(adapter); 2096 return 0; 2097 } 2098 2099 return -EAGAIN; 2100 } 2101 2102 /** 2103 * iavf_set_vlan_offload_features - set VLAN offload configuration 2104 * @adapter: board private structure 2105 * @prev_features: previous features used for comparison 2106 * @features: updated features used for configuration 2107 * 2108 * Set the aq_required bit(s) based on the requested features passed in to 2109 * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule 2110 * the watchdog if any changes are requested to expedite the request via 2111 * virtchnl. 2112 **/ 2113 void 2114 iavf_set_vlan_offload_features(struct iavf_adapter *adapter, 2115 netdev_features_t prev_features, 2116 netdev_features_t features) 2117 { 2118 bool enable_stripping = true, enable_insertion = true; 2119 u16 vlan_ethertype = 0; 2120 u64 aq_required = 0; 2121 2122 /* keep cases separate because one ethertype for offloads can be 2123 * disabled at the same time as another is disabled, so check for an 2124 * enabled ethertype first, then check for disabled. Default to 2125 * ETH_P_8021Q so an ethertype is specified if disabling insertion and 2126 * stripping. 2127 */ 2128 if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2129 vlan_ethertype = ETH_P_8021AD; 2130 else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2131 vlan_ethertype = ETH_P_8021Q; 2132 else if (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2133 vlan_ethertype = ETH_P_8021AD; 2134 else if (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2135 vlan_ethertype = ETH_P_8021Q; 2136 else 2137 vlan_ethertype = ETH_P_8021Q; 2138 2139 if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX))) 2140 enable_stripping = false; 2141 if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX))) 2142 enable_insertion = false; 2143 2144 if (VLAN_ALLOWED(adapter)) { 2145 /* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN 2146 * stripping via virtchnl. VLAN insertion can be toggled on the 2147 * netdev, but it doesn't require a virtchnl message 2148 */ 2149 if (enable_stripping) 2150 aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING; 2151 else 2152 aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING; 2153 2154 } else if (VLAN_V2_ALLOWED(adapter)) { 2155 switch (vlan_ethertype) { 2156 case ETH_P_8021Q: 2157 if (enable_stripping) 2158 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING; 2159 else 2160 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING; 2161 2162 if (enable_insertion) 2163 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION; 2164 else 2165 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION; 2166 break; 2167 case ETH_P_8021AD: 2168 if (enable_stripping) 2169 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING; 2170 else 2171 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING; 2172 2173 if (enable_insertion) 2174 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION; 2175 else 2176 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION; 2177 break; 2178 } 2179 } 2180 2181 if (aq_required) { 2182 adapter->aq_required |= aq_required; 2183 mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0); 2184 } 2185 } 2186 2187 /** 2188 * iavf_startup - first step of driver startup 2189 * @adapter: board private structure 2190 * 2191 * Function process __IAVF_STARTUP driver state. 2192 * When success the state is changed to __IAVF_INIT_VERSION_CHECK 2193 * when fails the state is changed to __IAVF_INIT_FAILED 2194 **/ 2195 static void iavf_startup(struct iavf_adapter *adapter) 2196 { 2197 struct pci_dev *pdev = adapter->pdev; 2198 struct iavf_hw *hw = &adapter->hw; 2199 enum iavf_status status; 2200 int ret; 2201 2202 WARN_ON(adapter->state != __IAVF_STARTUP); 2203 2204 /* driver loaded, probe complete */ 2205 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2206 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 2207 status = iavf_set_mac_type(hw); 2208 if (status) { 2209 dev_err(&pdev->dev, "Failed to set MAC type (%d)\n", status); 2210 goto err; 2211 } 2212 2213 ret = iavf_check_reset_complete(hw); 2214 if (ret) { 2215 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", 2216 ret); 2217 goto err; 2218 } 2219 hw->aq.num_arq_entries = IAVF_AQ_LEN; 2220 hw->aq.num_asq_entries = IAVF_AQ_LEN; 2221 hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2222 hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2223 2224 status = iavf_init_adminq(hw); 2225 if (status) { 2226 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", 2227 status); 2228 goto err; 2229 } 2230 ret = iavf_send_api_ver(adapter); 2231 if (ret) { 2232 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", ret); 2233 iavf_shutdown_adminq(hw); 2234 goto err; 2235 } 2236 iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK); 2237 return; 2238 err: 2239 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2240 } 2241 2242 /** 2243 * iavf_init_version_check - second step of driver startup 2244 * @adapter: board private structure 2245 * 2246 * Function process __IAVF_INIT_VERSION_CHECK driver state. 2247 * When success the state is changed to __IAVF_INIT_GET_RESOURCES 2248 * when fails the state is changed to __IAVF_INIT_FAILED 2249 **/ 2250 static void iavf_init_version_check(struct iavf_adapter *adapter) 2251 { 2252 struct pci_dev *pdev = adapter->pdev; 2253 struct iavf_hw *hw = &adapter->hw; 2254 int err = -EAGAIN; 2255 2256 WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK); 2257 2258 if (!iavf_asq_done(hw)) { 2259 dev_err(&pdev->dev, "Admin queue command never completed\n"); 2260 iavf_shutdown_adminq(hw); 2261 iavf_change_state(adapter, __IAVF_STARTUP); 2262 goto err; 2263 } 2264 2265 /* aq msg sent, awaiting reply */ 2266 err = iavf_verify_api_ver(adapter); 2267 if (err) { 2268 if (err == -EALREADY) 2269 err = iavf_send_api_ver(adapter); 2270 else 2271 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", 2272 adapter->pf_version.major, 2273 adapter->pf_version.minor, 2274 VIRTCHNL_VERSION_MAJOR, 2275 VIRTCHNL_VERSION_MINOR); 2276 goto err; 2277 } 2278 err = iavf_send_vf_config_msg(adapter); 2279 if (err) { 2280 dev_err(&pdev->dev, "Unable to send config request (%d)\n", 2281 err); 2282 goto err; 2283 } 2284 iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES); 2285 return; 2286 err: 2287 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2288 } 2289 2290 /** 2291 * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES 2292 * @adapter: board private structure 2293 */ 2294 int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter) 2295 { 2296 int i, num_req_queues = adapter->num_req_queues; 2297 struct iavf_vsi *vsi = &adapter->vsi; 2298 2299 for (i = 0; i < adapter->vf_res->num_vsis; i++) { 2300 if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV) 2301 adapter->vsi_res = &adapter->vf_res->vsi_res[i]; 2302 } 2303 if (!adapter->vsi_res) { 2304 dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); 2305 return -ENODEV; 2306 } 2307 2308 if (num_req_queues && 2309 num_req_queues > adapter->vsi_res->num_queue_pairs) { 2310 /* Problem. The PF gave us fewer queues than what we had 2311 * negotiated in our request. Need a reset to see if we can't 2312 * get back to a working state. 2313 */ 2314 dev_err(&adapter->pdev->dev, 2315 "Requested %d queues, but PF only gave us %d.\n", 2316 num_req_queues, 2317 adapter->vsi_res->num_queue_pairs); 2318 adapter->flags |= IAVF_FLAG_REINIT_MSIX_NEEDED; 2319 adapter->num_req_queues = adapter->vsi_res->num_queue_pairs; 2320 iavf_schedule_reset(adapter); 2321 2322 return -EAGAIN; 2323 } 2324 adapter->num_req_queues = 0; 2325 adapter->vsi.id = adapter->vsi_res->vsi_id; 2326 2327 adapter->vsi.back = adapter; 2328 adapter->vsi.base_vector = 1; 2329 vsi->netdev = adapter->netdev; 2330 vsi->qs_handle = adapter->vsi_res->qset_handle; 2331 if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) { 2332 adapter->rss_key_size = adapter->vf_res->rss_key_size; 2333 adapter->rss_lut_size = adapter->vf_res->rss_lut_size; 2334 } else { 2335 adapter->rss_key_size = IAVF_HKEY_ARRAY_SIZE; 2336 adapter->rss_lut_size = IAVF_HLUT_ARRAY_SIZE; 2337 } 2338 2339 return 0; 2340 } 2341 2342 /** 2343 * iavf_init_get_resources - third step of driver startup 2344 * @adapter: board private structure 2345 * 2346 * Function process __IAVF_INIT_GET_RESOURCES driver state and 2347 * finishes driver initialization procedure. 2348 * When success the state is changed to __IAVF_DOWN 2349 * when fails the state is changed to __IAVF_INIT_FAILED 2350 **/ 2351 static void iavf_init_get_resources(struct iavf_adapter *adapter) 2352 { 2353 struct pci_dev *pdev = adapter->pdev; 2354 struct iavf_hw *hw = &adapter->hw; 2355 int err; 2356 2357 WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES); 2358 /* aq msg sent, awaiting reply */ 2359 if (!adapter->vf_res) { 2360 adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE, 2361 GFP_KERNEL); 2362 if (!adapter->vf_res) { 2363 err = -ENOMEM; 2364 goto err; 2365 } 2366 } 2367 err = iavf_get_vf_config(adapter); 2368 if (err == -EALREADY) { 2369 err = iavf_send_vf_config_msg(adapter); 2370 goto err_alloc; 2371 } else if (err == -EINVAL) { 2372 /* We only get -EINVAL if the device is in a very bad 2373 * state or if we've been disabled for previous bad 2374 * behavior. Either way, we're done now. 2375 */ 2376 iavf_shutdown_adminq(hw); 2377 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); 2378 return; 2379 } 2380 if (err) { 2381 dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err); 2382 goto err_alloc; 2383 } 2384 2385 err = iavf_parse_vf_resource_msg(adapter); 2386 if (err) { 2387 dev_err(&pdev->dev, "Failed to parse VF resource message from PF (%d)\n", 2388 err); 2389 goto err_alloc; 2390 } 2391 /* Some features require additional messages to negotiate extended 2392 * capabilities. These are processed in sequence by the 2393 * __IAVF_INIT_EXTENDED_CAPS driver state. 2394 */ 2395 adapter->extended_caps = IAVF_EXTENDED_CAPS; 2396 2397 iavf_change_state(adapter, __IAVF_INIT_EXTENDED_CAPS); 2398 return; 2399 2400 err_alloc: 2401 kfree(adapter->vf_res); 2402 adapter->vf_res = NULL; 2403 err: 2404 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2405 } 2406 2407 /** 2408 * iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2409 * @adapter: board private structure 2410 * 2411 * Function processes send of the extended VLAN V2 capability message to the 2412 * PF. Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent, 2413 * e.g. due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2. 2414 */ 2415 static void iavf_init_send_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2416 { 2417 int ret; 2418 2419 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2)); 2420 2421 ret = iavf_send_vf_offload_vlan_v2_msg(adapter); 2422 if (ret && ret == -EOPNOTSUPP) { 2423 /* PF does not support VIRTCHNL_VF_OFFLOAD_V2. In this case, 2424 * we did not send the capability exchange message and do not 2425 * expect a response. 2426 */ 2427 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2428 } 2429 2430 /* We sent the message, so move on to the next step */ 2431 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2432 } 2433 2434 /** 2435 * iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2436 * @adapter: board private structure 2437 * 2438 * Function processes receipt of the extended VLAN V2 capability message from 2439 * the PF. 2440 **/ 2441 static void iavf_init_recv_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2442 { 2443 int ret; 2444 2445 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2)); 2446 2447 memset(&adapter->vlan_v2_caps, 0, sizeof(adapter->vlan_v2_caps)); 2448 2449 ret = iavf_get_vf_vlan_v2_caps(adapter); 2450 if (ret) 2451 goto err; 2452 2453 /* We've processed receipt of the VLAN V2 caps message */ 2454 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2455 return; 2456 err: 2457 /* We didn't receive a reply. Make sure we try sending again when 2458 * __IAVF_INIT_FAILED attempts to recover. 2459 */ 2460 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2461 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2462 } 2463 2464 /** 2465 * iavf_init_process_extended_caps - Part of driver startup 2466 * @adapter: board private structure 2467 * 2468 * Function processes __IAVF_INIT_EXTENDED_CAPS driver state. This state 2469 * handles negotiating capabilities for features which require an additional 2470 * message. 2471 * 2472 * Once all extended capabilities exchanges are finished, the driver will 2473 * transition into __IAVF_INIT_CONFIG_ADAPTER. 2474 */ 2475 static void iavf_init_process_extended_caps(struct iavf_adapter *adapter) 2476 { 2477 WARN_ON(adapter->state != __IAVF_INIT_EXTENDED_CAPS); 2478 2479 /* Process capability exchange for VLAN V2 */ 2480 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2) { 2481 iavf_init_send_offload_vlan_v2_caps(adapter); 2482 return; 2483 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2) { 2484 iavf_init_recv_offload_vlan_v2_caps(adapter); 2485 return; 2486 } 2487 2488 /* When we reach here, no further extended capabilities exchanges are 2489 * necessary, so we finally transition into __IAVF_INIT_CONFIG_ADAPTER 2490 */ 2491 iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER); 2492 } 2493 2494 /** 2495 * iavf_init_config_adapter - last part of driver startup 2496 * @adapter: board private structure 2497 * 2498 * After all the supported capabilities are negotiated, then the 2499 * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization. 2500 */ 2501 static void iavf_init_config_adapter(struct iavf_adapter *adapter) 2502 { 2503 struct net_device *netdev = adapter->netdev; 2504 struct pci_dev *pdev = adapter->pdev; 2505 int err; 2506 2507 WARN_ON(adapter->state != __IAVF_INIT_CONFIG_ADAPTER); 2508 2509 if (iavf_process_config(adapter)) 2510 goto err; 2511 2512 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2513 2514 adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED; 2515 2516 netdev->netdev_ops = &iavf_netdev_ops; 2517 iavf_set_ethtool_ops(netdev); 2518 netdev->watchdog_timeo = 5 * HZ; 2519 2520 /* MTU range: 68 - 9710 */ 2521 netdev->min_mtu = ETH_MIN_MTU; 2522 netdev->max_mtu = IAVF_MAX_RXBUFFER - IAVF_PACKET_HDR_PAD; 2523 2524 if (!is_valid_ether_addr(adapter->hw.mac.addr)) { 2525 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", 2526 adapter->hw.mac.addr); 2527 eth_hw_addr_random(netdev); 2528 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); 2529 } else { 2530 eth_hw_addr_set(netdev, adapter->hw.mac.addr); 2531 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); 2532 } 2533 2534 adapter->flags |= IAVF_FLAG_INITIAL_MAC_SET; 2535 2536 adapter->tx_desc_count = IAVF_DEFAULT_TXD; 2537 adapter->rx_desc_count = IAVF_DEFAULT_RXD; 2538 err = iavf_init_interrupt_scheme(adapter); 2539 if (err) 2540 goto err_sw_init; 2541 iavf_map_rings_to_vectors(adapter); 2542 if (adapter->vf_res->vf_cap_flags & 2543 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) 2544 adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE; 2545 2546 err = iavf_request_misc_irq(adapter); 2547 if (err) 2548 goto err_sw_init; 2549 2550 netif_carrier_off(netdev); 2551 adapter->link_up = false; 2552 2553 /* set the semaphore to prevent any callbacks after device registration 2554 * up to time when state of driver will be set to __IAVF_DOWN 2555 */ 2556 rtnl_lock(); 2557 if (!adapter->netdev_registered) { 2558 err = register_netdevice(netdev); 2559 if (err) { 2560 rtnl_unlock(); 2561 goto err_register; 2562 } 2563 } 2564 2565 adapter->netdev_registered = true; 2566 2567 netif_tx_stop_all_queues(netdev); 2568 if (CLIENT_ALLOWED(adapter)) { 2569 err = iavf_lan_add_device(adapter); 2570 if (err) 2571 dev_info(&pdev->dev, "Failed to add VF to client API service list: %d\n", 2572 err); 2573 } 2574 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); 2575 if (netdev->features & NETIF_F_GRO) 2576 dev_info(&pdev->dev, "GRO is enabled\n"); 2577 2578 iavf_change_state(adapter, __IAVF_DOWN); 2579 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 2580 rtnl_unlock(); 2581 2582 iavf_misc_irq_enable(adapter); 2583 wake_up(&adapter->down_waitqueue); 2584 2585 adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); 2586 adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); 2587 if (!adapter->rss_key || !adapter->rss_lut) { 2588 err = -ENOMEM; 2589 goto err_mem; 2590 } 2591 if (RSS_AQ(adapter)) 2592 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 2593 else 2594 iavf_init_rss(adapter); 2595 2596 if (VLAN_V2_ALLOWED(adapter)) 2597 /* request initial VLAN offload settings */ 2598 iavf_set_vlan_offload_features(adapter, 0, netdev->features); 2599 2600 return; 2601 err_mem: 2602 iavf_free_rss(adapter); 2603 err_register: 2604 iavf_free_misc_irq(adapter); 2605 err_sw_init: 2606 iavf_reset_interrupt_capability(adapter); 2607 err: 2608 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2609 } 2610 2611 /** 2612 * iavf_watchdog_task - Periodic call-back task 2613 * @work: pointer to work_struct 2614 **/ 2615 static void iavf_watchdog_task(struct work_struct *work) 2616 { 2617 struct iavf_adapter *adapter = container_of(work, 2618 struct iavf_adapter, 2619 watchdog_task.work); 2620 struct iavf_hw *hw = &adapter->hw; 2621 u32 reg_val; 2622 2623 if (!mutex_trylock(&adapter->crit_lock)) { 2624 if (adapter->state == __IAVF_REMOVE) 2625 return; 2626 2627 goto restart_watchdog; 2628 } 2629 2630 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 2631 iavf_change_state(adapter, __IAVF_COMM_FAILED); 2632 2633 if (adapter->flags & IAVF_FLAG_RESET_NEEDED) { 2634 adapter->aq_required = 0; 2635 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2636 mutex_unlock(&adapter->crit_lock); 2637 queue_work(iavf_wq, &adapter->reset_task); 2638 return; 2639 } 2640 2641 switch (adapter->state) { 2642 case __IAVF_STARTUP: 2643 iavf_startup(adapter); 2644 mutex_unlock(&adapter->crit_lock); 2645 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 2646 msecs_to_jiffies(30)); 2647 return; 2648 case __IAVF_INIT_VERSION_CHECK: 2649 iavf_init_version_check(adapter); 2650 mutex_unlock(&adapter->crit_lock); 2651 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 2652 msecs_to_jiffies(30)); 2653 return; 2654 case __IAVF_INIT_GET_RESOURCES: 2655 iavf_init_get_resources(adapter); 2656 mutex_unlock(&adapter->crit_lock); 2657 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 2658 msecs_to_jiffies(1)); 2659 return; 2660 case __IAVF_INIT_EXTENDED_CAPS: 2661 iavf_init_process_extended_caps(adapter); 2662 mutex_unlock(&adapter->crit_lock); 2663 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 2664 msecs_to_jiffies(1)); 2665 return; 2666 case __IAVF_INIT_CONFIG_ADAPTER: 2667 iavf_init_config_adapter(adapter); 2668 mutex_unlock(&adapter->crit_lock); 2669 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 2670 msecs_to_jiffies(1)); 2671 return; 2672 case __IAVF_INIT_FAILED: 2673 if (test_bit(__IAVF_IN_REMOVE_TASK, 2674 &adapter->crit_section)) { 2675 /* Do not update the state and do not reschedule 2676 * watchdog task, iavf_remove should handle this state 2677 * as it can loop forever 2678 */ 2679 mutex_unlock(&adapter->crit_lock); 2680 return; 2681 } 2682 if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) { 2683 dev_err(&adapter->pdev->dev, 2684 "Failed to communicate with PF; waiting before retry\n"); 2685 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 2686 iavf_shutdown_adminq(hw); 2687 mutex_unlock(&adapter->crit_lock); 2688 queue_delayed_work(iavf_wq, 2689 &adapter->watchdog_task, (5 * HZ)); 2690 return; 2691 } 2692 /* Try again from failed step*/ 2693 iavf_change_state(adapter, adapter->last_state); 2694 mutex_unlock(&adapter->crit_lock); 2695 queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ); 2696 return; 2697 case __IAVF_COMM_FAILED: 2698 if (test_bit(__IAVF_IN_REMOVE_TASK, 2699 &adapter->crit_section)) { 2700 /* Set state to __IAVF_INIT_FAILED and perform remove 2701 * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task 2702 * doesn't bring the state back to __IAVF_COMM_FAILED. 2703 */ 2704 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2705 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2706 mutex_unlock(&adapter->crit_lock); 2707 return; 2708 } 2709 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 2710 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 2711 if (reg_val == VIRTCHNL_VFR_VFACTIVE || 2712 reg_val == VIRTCHNL_VFR_COMPLETED) { 2713 /* A chance for redemption! */ 2714 dev_err(&adapter->pdev->dev, 2715 "Hardware came out of reset. Attempting reinit.\n"); 2716 /* When init task contacts the PF and 2717 * gets everything set up again, it'll restart the 2718 * watchdog for us. Down, boy. Sit. Stay. Woof. 2719 */ 2720 iavf_change_state(adapter, __IAVF_STARTUP); 2721 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2722 } 2723 adapter->aq_required = 0; 2724 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2725 mutex_unlock(&adapter->crit_lock); 2726 queue_delayed_work(iavf_wq, 2727 &adapter->watchdog_task, 2728 msecs_to_jiffies(10)); 2729 return; 2730 case __IAVF_RESETTING: 2731 mutex_unlock(&adapter->crit_lock); 2732 queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2); 2733 return; 2734 case __IAVF_DOWN: 2735 case __IAVF_DOWN_PENDING: 2736 case __IAVF_TESTING: 2737 case __IAVF_RUNNING: 2738 if (adapter->current_op) { 2739 if (!iavf_asq_done(hw)) { 2740 dev_dbg(&adapter->pdev->dev, 2741 "Admin queue timeout\n"); 2742 iavf_send_api_ver(adapter); 2743 } 2744 } else { 2745 int ret = iavf_process_aq_command(adapter); 2746 2747 /* An error will be returned if no commands were 2748 * processed; use this opportunity to update stats 2749 * if the error isn't -ENOTSUPP 2750 */ 2751 if (ret && ret != -EOPNOTSUPP && 2752 adapter->state == __IAVF_RUNNING) 2753 iavf_request_stats(adapter); 2754 } 2755 if (adapter->state == __IAVF_RUNNING) 2756 iavf_detect_recover_hung(&adapter->vsi); 2757 break; 2758 case __IAVF_REMOVE: 2759 default: 2760 mutex_unlock(&adapter->crit_lock); 2761 return; 2762 } 2763 2764 /* check for hw reset */ 2765 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK; 2766 if (!reg_val) { 2767 adapter->flags |= IAVF_FLAG_RESET_PENDING; 2768 adapter->aq_required = 0; 2769 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2770 dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); 2771 queue_work(iavf_wq, &adapter->reset_task); 2772 mutex_unlock(&adapter->crit_lock); 2773 queue_delayed_work(iavf_wq, 2774 &adapter->watchdog_task, HZ * 2); 2775 return; 2776 } 2777 2778 schedule_delayed_work(&adapter->client_task, msecs_to_jiffies(5)); 2779 mutex_unlock(&adapter->crit_lock); 2780 restart_watchdog: 2781 if (adapter->state >= __IAVF_DOWN) 2782 queue_work(iavf_wq, &adapter->adminq_task); 2783 if (adapter->aq_required) 2784 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 2785 msecs_to_jiffies(20)); 2786 else 2787 queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2); 2788 } 2789 2790 /** 2791 * iavf_disable_vf - disable VF 2792 * @adapter: board private structure 2793 * 2794 * Set communication failed flag and free all resources. 2795 * NOTE: This function is expected to be called with crit_lock being held. 2796 **/ 2797 static void iavf_disable_vf(struct iavf_adapter *adapter) 2798 { 2799 struct iavf_mac_filter *f, *ftmp; 2800 struct iavf_vlan_filter *fv, *fvtmp; 2801 struct iavf_cloud_filter *cf, *cftmp; 2802 2803 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 2804 2805 /* We don't use netif_running() because it may be true prior to 2806 * ndo_open() returning, so we can't assume it means all our open 2807 * tasks have finished, since we're not holding the rtnl_lock here. 2808 */ 2809 if (adapter->state == __IAVF_RUNNING) { 2810 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 2811 netif_carrier_off(adapter->netdev); 2812 netif_tx_disable(adapter->netdev); 2813 adapter->link_up = false; 2814 iavf_napi_disable_all(adapter); 2815 iavf_irq_disable(adapter); 2816 iavf_free_traffic_irqs(adapter); 2817 iavf_free_all_tx_resources(adapter); 2818 iavf_free_all_rx_resources(adapter); 2819 } 2820 2821 spin_lock_bh(&adapter->mac_vlan_list_lock); 2822 2823 /* Delete all of the filters */ 2824 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 2825 list_del(&f->list); 2826 kfree(f); 2827 } 2828 2829 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) { 2830 list_del(&fv->list); 2831 kfree(fv); 2832 } 2833 2834 spin_unlock_bh(&adapter->mac_vlan_list_lock); 2835 2836 spin_lock_bh(&adapter->cloud_filter_list_lock); 2837 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 2838 list_del(&cf->list); 2839 kfree(cf); 2840 adapter->num_cloud_filters--; 2841 } 2842 spin_unlock_bh(&adapter->cloud_filter_list_lock); 2843 2844 iavf_free_misc_irq(adapter); 2845 iavf_reset_interrupt_capability(adapter); 2846 iavf_free_q_vectors(adapter); 2847 iavf_free_queues(adapter); 2848 memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE); 2849 iavf_shutdown_adminq(&adapter->hw); 2850 adapter->netdev->flags &= ~IFF_UP; 2851 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 2852 iavf_change_state(adapter, __IAVF_DOWN); 2853 wake_up(&adapter->down_waitqueue); 2854 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); 2855 } 2856 2857 /** 2858 * iavf_reset_task - Call-back task to handle hardware reset 2859 * @work: pointer to work_struct 2860 * 2861 * During reset we need to shut down and reinitialize the admin queue 2862 * before we can use it to communicate with the PF again. We also clear 2863 * and reinit the rings because that context is lost as well. 2864 **/ 2865 static void iavf_reset_task(struct work_struct *work) 2866 { 2867 struct iavf_adapter *adapter = container_of(work, 2868 struct iavf_adapter, 2869 reset_task); 2870 struct virtchnl_vf_resource *vfres = adapter->vf_res; 2871 struct net_device *netdev = adapter->netdev; 2872 struct iavf_hw *hw = &adapter->hw; 2873 struct iavf_mac_filter *f, *ftmp; 2874 struct iavf_cloud_filter *cf; 2875 enum iavf_status status; 2876 u32 reg_val; 2877 int i = 0, err; 2878 bool running; 2879 2880 /* When device is being removed it doesn't make sense to run the reset 2881 * task, just return in such a case. 2882 */ 2883 if (!mutex_trylock(&adapter->crit_lock)) { 2884 if (adapter->state != __IAVF_REMOVE) 2885 queue_work(iavf_wq, &adapter->reset_task); 2886 2887 return; 2888 } 2889 2890 while (!mutex_trylock(&adapter->client_lock)) 2891 usleep_range(500, 1000); 2892 if (CLIENT_ENABLED(adapter)) { 2893 adapter->flags &= ~(IAVF_FLAG_CLIENT_NEEDS_OPEN | 2894 IAVF_FLAG_CLIENT_NEEDS_CLOSE | 2895 IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS | 2896 IAVF_FLAG_SERVICE_CLIENT_REQUESTED); 2897 cancel_delayed_work_sync(&adapter->client_task); 2898 iavf_notify_client_close(&adapter->vsi, true); 2899 } 2900 iavf_misc_irq_disable(adapter); 2901 if (adapter->flags & IAVF_FLAG_RESET_NEEDED) { 2902 adapter->flags &= ~IAVF_FLAG_RESET_NEEDED; 2903 /* Restart the AQ here. If we have been reset but didn't 2904 * detect it, or if the PF had to reinit, our AQ will be hosed. 2905 */ 2906 iavf_shutdown_adminq(hw); 2907 iavf_init_adminq(hw); 2908 iavf_request_reset(adapter); 2909 } 2910 adapter->flags |= IAVF_FLAG_RESET_PENDING; 2911 2912 /* poll until we see the reset actually happen */ 2913 for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) { 2914 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & 2915 IAVF_VF_ARQLEN1_ARQENABLE_MASK; 2916 if (!reg_val) 2917 break; 2918 usleep_range(5000, 10000); 2919 } 2920 if (i == IAVF_RESET_WAIT_DETECTED_COUNT) { 2921 dev_info(&adapter->pdev->dev, "Never saw reset\n"); 2922 goto continue_reset; /* act like the reset happened */ 2923 } 2924 2925 /* wait until the reset is complete and the PF is responding to us */ 2926 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 2927 /* sleep first to make sure a minimum wait time is met */ 2928 msleep(IAVF_RESET_WAIT_MS); 2929 2930 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 2931 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 2932 if (reg_val == VIRTCHNL_VFR_VFACTIVE) 2933 break; 2934 } 2935 2936 pci_set_master(adapter->pdev); 2937 pci_restore_msi_state(adapter->pdev); 2938 2939 if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) { 2940 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", 2941 reg_val); 2942 iavf_disable_vf(adapter); 2943 mutex_unlock(&adapter->client_lock); 2944 mutex_unlock(&adapter->crit_lock); 2945 return; /* Do not attempt to reinit. It's dead, Jim. */ 2946 } 2947 2948 continue_reset: 2949 /* We don't use netif_running() because it may be true prior to 2950 * ndo_open() returning, so we can't assume it means all our open 2951 * tasks have finished, since we're not holding the rtnl_lock here. 2952 */ 2953 running = adapter->state == __IAVF_RUNNING; 2954 2955 if (running) { 2956 netif_carrier_off(netdev); 2957 netif_tx_stop_all_queues(netdev); 2958 adapter->link_up = false; 2959 iavf_napi_disable_all(adapter); 2960 } 2961 iavf_irq_disable(adapter); 2962 2963 iavf_change_state(adapter, __IAVF_RESETTING); 2964 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 2965 2966 /* free the Tx/Rx rings and descriptors, might be better to just 2967 * re-use them sometime in the future 2968 */ 2969 iavf_free_all_rx_resources(adapter); 2970 iavf_free_all_tx_resources(adapter); 2971 2972 adapter->flags |= IAVF_FLAG_QUEUES_DISABLED; 2973 /* kill and reinit the admin queue */ 2974 iavf_shutdown_adminq(hw); 2975 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2976 status = iavf_init_adminq(hw); 2977 if (status) { 2978 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", 2979 status); 2980 goto reset_err; 2981 } 2982 adapter->aq_required = 0; 2983 2984 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 2985 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 2986 err = iavf_reinit_interrupt_scheme(adapter); 2987 if (err) 2988 goto reset_err; 2989 } 2990 2991 if (RSS_AQ(adapter)) { 2992 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 2993 } else { 2994 err = iavf_init_rss(adapter); 2995 if (err) 2996 goto reset_err; 2997 } 2998 2999 adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG; 3000 /* always set since VIRTCHNL_OP_GET_VF_RESOURCES has not been 3001 * sent/received yet, so VLAN_V2_ALLOWED() cannot is not reliable here, 3002 * however the VIRTCHNL_OP_GET_OFFLOAD_VLAN_V2_CAPS won't be sent until 3003 * VIRTCHNL_OP_GET_VF_RESOURCES and VIRTCHNL_VF_OFFLOAD_VLAN_V2 have 3004 * been successfully sent and negotiated 3005 */ 3006 adapter->aq_required |= IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS; 3007 adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS; 3008 3009 spin_lock_bh(&adapter->mac_vlan_list_lock); 3010 3011 /* Delete filter for the current MAC address, it could have 3012 * been changed by the PF via administratively set MAC. 3013 * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES. 3014 */ 3015 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3016 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) { 3017 list_del(&f->list); 3018 kfree(f); 3019 } 3020 } 3021 /* re-add all MAC filters */ 3022 list_for_each_entry(f, &adapter->mac_filter_list, list) { 3023 f->add = true; 3024 } 3025 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3026 3027 /* check if TCs are running and re-add all cloud filters */ 3028 spin_lock_bh(&adapter->cloud_filter_list_lock); 3029 if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 3030 adapter->num_tc) { 3031 list_for_each_entry(cf, &adapter->cloud_filter_list, list) { 3032 cf->add = true; 3033 } 3034 } 3035 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3036 3037 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 3038 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 3039 iavf_misc_irq_enable(adapter); 3040 3041 bitmap_clear(adapter->vsi.active_cvlans, 0, VLAN_N_VID); 3042 bitmap_clear(adapter->vsi.active_svlans, 0, VLAN_N_VID); 3043 3044 mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2); 3045 3046 /* We were running when the reset started, so we need to restore some 3047 * state here. 3048 */ 3049 if (running) { 3050 /* allocate transmit descriptors */ 3051 err = iavf_setup_all_tx_resources(adapter); 3052 if (err) 3053 goto reset_err; 3054 3055 /* allocate receive descriptors */ 3056 err = iavf_setup_all_rx_resources(adapter); 3057 if (err) 3058 goto reset_err; 3059 3060 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3061 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3062 err = iavf_request_traffic_irqs(adapter, netdev->name); 3063 if (err) 3064 goto reset_err; 3065 3066 adapter->flags &= ~IAVF_FLAG_REINIT_MSIX_NEEDED; 3067 } 3068 3069 iavf_configure(adapter); 3070 3071 /* iavf_up_complete() will switch device back 3072 * to __IAVF_RUNNING 3073 */ 3074 iavf_up_complete(adapter); 3075 3076 iavf_irq_enable(adapter, true); 3077 } else { 3078 iavf_change_state(adapter, __IAVF_DOWN); 3079 wake_up(&adapter->down_waitqueue); 3080 } 3081 3082 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 3083 3084 mutex_unlock(&adapter->client_lock); 3085 mutex_unlock(&adapter->crit_lock); 3086 3087 return; 3088 reset_err: 3089 mutex_unlock(&adapter->client_lock); 3090 mutex_unlock(&adapter->crit_lock); 3091 if (running) 3092 iavf_change_state(adapter, __IAVF_RUNNING); 3093 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); 3094 iavf_close(netdev); 3095 } 3096 3097 /** 3098 * iavf_adminq_task - worker thread to clean the admin queue 3099 * @work: pointer to work_struct containing our data 3100 **/ 3101 static void iavf_adminq_task(struct work_struct *work) 3102 { 3103 struct iavf_adapter *adapter = 3104 container_of(work, struct iavf_adapter, adminq_task); 3105 struct iavf_hw *hw = &adapter->hw; 3106 struct iavf_arq_event_info event; 3107 enum virtchnl_ops v_op; 3108 enum iavf_status ret, v_ret; 3109 u32 val, oldval; 3110 u16 pending; 3111 3112 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 3113 goto out; 3114 3115 if (!mutex_trylock(&adapter->crit_lock)) { 3116 if (adapter->state == __IAVF_REMOVE) 3117 return; 3118 3119 queue_work(iavf_wq, &adapter->adminq_task); 3120 goto out; 3121 } 3122 3123 event.buf_len = IAVF_MAX_AQ_BUF_SIZE; 3124 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3125 if (!event.msg_buf) 3126 goto out; 3127 3128 do { 3129 ret = iavf_clean_arq_element(hw, &event, &pending); 3130 v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high); 3131 v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low); 3132 3133 if (ret || !v_op) 3134 break; /* No event to process or error cleaning ARQ */ 3135 3136 iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf, 3137 event.msg_len); 3138 if (pending != 0) 3139 memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE); 3140 } while (pending); 3141 mutex_unlock(&adapter->crit_lock); 3142 3143 if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES)) { 3144 if (adapter->netdev_registered || 3145 !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 3146 struct net_device *netdev = adapter->netdev; 3147 3148 rtnl_lock(); 3149 netdev_update_features(netdev); 3150 rtnl_unlock(); 3151 /* Request VLAN offload settings */ 3152 if (VLAN_V2_ALLOWED(adapter)) 3153 iavf_set_vlan_offload_features 3154 (adapter, 0, netdev->features); 3155 3156 iavf_set_queue_vlan_tag_loc(adapter); 3157 } 3158 3159 adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; 3160 } 3161 if ((adapter->flags & 3162 (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) || 3163 adapter->state == __IAVF_RESETTING) 3164 goto freedom; 3165 3166 /* check for error indications */ 3167 val = rd32(hw, hw->aq.arq.len); 3168 if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */ 3169 goto freedom; 3170 oldval = val; 3171 if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) { 3172 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); 3173 val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK; 3174 } 3175 if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) { 3176 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); 3177 val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK; 3178 } 3179 if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) { 3180 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); 3181 val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK; 3182 } 3183 if (oldval != val) 3184 wr32(hw, hw->aq.arq.len, val); 3185 3186 val = rd32(hw, hw->aq.asq.len); 3187 oldval = val; 3188 if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) { 3189 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); 3190 val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK; 3191 } 3192 if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) { 3193 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); 3194 val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK; 3195 } 3196 if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) { 3197 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); 3198 val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK; 3199 } 3200 if (oldval != val) 3201 wr32(hw, hw->aq.asq.len, val); 3202 3203 freedom: 3204 kfree(event.msg_buf); 3205 out: 3206 /* re-enable Admin queue interrupt cause */ 3207 iavf_misc_irq_enable(adapter); 3208 } 3209 3210 /** 3211 * iavf_client_task - worker thread to perform client work 3212 * @work: pointer to work_struct containing our data 3213 * 3214 * This task handles client interactions. Because client calls can be 3215 * reentrant, we can't handle them in the watchdog. 3216 **/ 3217 static void iavf_client_task(struct work_struct *work) 3218 { 3219 struct iavf_adapter *adapter = 3220 container_of(work, struct iavf_adapter, client_task.work); 3221 3222 /* If we can't get the client bit, just give up. We'll be rescheduled 3223 * later. 3224 */ 3225 3226 if (!mutex_trylock(&adapter->client_lock)) 3227 return; 3228 3229 if (adapter->flags & IAVF_FLAG_SERVICE_CLIENT_REQUESTED) { 3230 iavf_client_subtask(adapter); 3231 adapter->flags &= ~IAVF_FLAG_SERVICE_CLIENT_REQUESTED; 3232 goto out; 3233 } 3234 if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS) { 3235 iavf_notify_client_l2_params(&adapter->vsi); 3236 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS; 3237 goto out; 3238 } 3239 if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_CLOSE) { 3240 iavf_notify_client_close(&adapter->vsi, false); 3241 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_CLOSE; 3242 goto out; 3243 } 3244 if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_OPEN) { 3245 iavf_notify_client_open(&adapter->vsi); 3246 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_OPEN; 3247 } 3248 out: 3249 mutex_unlock(&adapter->client_lock); 3250 } 3251 3252 /** 3253 * iavf_free_all_tx_resources - Free Tx Resources for All Queues 3254 * @adapter: board private structure 3255 * 3256 * Free all transmit software resources 3257 **/ 3258 void iavf_free_all_tx_resources(struct iavf_adapter *adapter) 3259 { 3260 int i; 3261 3262 if (!adapter->tx_rings) 3263 return; 3264 3265 for (i = 0; i < adapter->num_active_queues; i++) 3266 if (adapter->tx_rings[i].desc) 3267 iavf_free_tx_resources(&adapter->tx_rings[i]); 3268 } 3269 3270 /** 3271 * iavf_setup_all_tx_resources - allocate all queues Tx resources 3272 * @adapter: board private structure 3273 * 3274 * If this function returns with an error, then it's possible one or 3275 * more of the rings is populated (while the rest are not). It is the 3276 * callers duty to clean those orphaned rings. 3277 * 3278 * Return 0 on success, negative on failure 3279 **/ 3280 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter) 3281 { 3282 int i, err = 0; 3283 3284 for (i = 0; i < adapter->num_active_queues; i++) { 3285 adapter->tx_rings[i].count = adapter->tx_desc_count; 3286 err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]); 3287 if (!err) 3288 continue; 3289 dev_err(&adapter->pdev->dev, 3290 "Allocation for Tx Queue %u failed\n", i); 3291 break; 3292 } 3293 3294 return err; 3295 } 3296 3297 /** 3298 * iavf_setup_all_rx_resources - allocate all queues Rx resources 3299 * @adapter: board private structure 3300 * 3301 * If this function returns with an error, then it's possible one or 3302 * more of the rings is populated (while the rest are not). It is the 3303 * callers duty to clean those orphaned rings. 3304 * 3305 * Return 0 on success, negative on failure 3306 **/ 3307 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter) 3308 { 3309 int i, err = 0; 3310 3311 for (i = 0; i < adapter->num_active_queues; i++) { 3312 adapter->rx_rings[i].count = adapter->rx_desc_count; 3313 err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]); 3314 if (!err) 3315 continue; 3316 dev_err(&adapter->pdev->dev, 3317 "Allocation for Rx Queue %u failed\n", i); 3318 break; 3319 } 3320 return err; 3321 } 3322 3323 /** 3324 * iavf_free_all_rx_resources - Free Rx Resources for All Queues 3325 * @adapter: board private structure 3326 * 3327 * Free all receive software resources 3328 **/ 3329 void iavf_free_all_rx_resources(struct iavf_adapter *adapter) 3330 { 3331 int i; 3332 3333 if (!adapter->rx_rings) 3334 return; 3335 3336 for (i = 0; i < adapter->num_active_queues; i++) 3337 if (adapter->rx_rings[i].desc) 3338 iavf_free_rx_resources(&adapter->rx_rings[i]); 3339 } 3340 3341 /** 3342 * iavf_validate_tx_bandwidth - validate the max Tx bandwidth 3343 * @adapter: board private structure 3344 * @max_tx_rate: max Tx bw for a tc 3345 **/ 3346 static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter, 3347 u64 max_tx_rate) 3348 { 3349 int speed = 0, ret = 0; 3350 3351 if (ADV_LINK_SUPPORT(adapter)) { 3352 if (adapter->link_speed_mbps < U32_MAX) { 3353 speed = adapter->link_speed_mbps; 3354 goto validate_bw; 3355 } else { 3356 dev_err(&adapter->pdev->dev, "Unknown link speed\n"); 3357 return -EINVAL; 3358 } 3359 } 3360 3361 switch (adapter->link_speed) { 3362 case VIRTCHNL_LINK_SPEED_40GB: 3363 speed = SPEED_40000; 3364 break; 3365 case VIRTCHNL_LINK_SPEED_25GB: 3366 speed = SPEED_25000; 3367 break; 3368 case VIRTCHNL_LINK_SPEED_20GB: 3369 speed = SPEED_20000; 3370 break; 3371 case VIRTCHNL_LINK_SPEED_10GB: 3372 speed = SPEED_10000; 3373 break; 3374 case VIRTCHNL_LINK_SPEED_5GB: 3375 speed = SPEED_5000; 3376 break; 3377 case VIRTCHNL_LINK_SPEED_2_5GB: 3378 speed = SPEED_2500; 3379 break; 3380 case VIRTCHNL_LINK_SPEED_1GB: 3381 speed = SPEED_1000; 3382 break; 3383 case VIRTCHNL_LINK_SPEED_100MB: 3384 speed = SPEED_100; 3385 break; 3386 default: 3387 break; 3388 } 3389 3390 validate_bw: 3391 if (max_tx_rate > speed) { 3392 dev_err(&adapter->pdev->dev, 3393 "Invalid tx rate specified\n"); 3394 ret = -EINVAL; 3395 } 3396 3397 return ret; 3398 } 3399 3400 /** 3401 * iavf_validate_ch_config - validate queue mapping info 3402 * @adapter: board private structure 3403 * @mqprio_qopt: queue parameters 3404 * 3405 * This function validates if the config provided by the user to 3406 * configure queue channels is valid or not. Returns 0 on a valid 3407 * config. 3408 **/ 3409 static int iavf_validate_ch_config(struct iavf_adapter *adapter, 3410 struct tc_mqprio_qopt_offload *mqprio_qopt) 3411 { 3412 u64 total_max_rate = 0; 3413 int i, num_qps = 0; 3414 u64 tx_rate = 0; 3415 int ret = 0; 3416 3417 if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS || 3418 mqprio_qopt->qopt.num_tc < 1) 3419 return -EINVAL; 3420 3421 for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) { 3422 if (!mqprio_qopt->qopt.count[i] || 3423 mqprio_qopt->qopt.offset[i] != num_qps) 3424 return -EINVAL; 3425 if (mqprio_qopt->min_rate[i]) { 3426 dev_err(&adapter->pdev->dev, 3427 "Invalid min tx rate (greater than 0) specified\n"); 3428 return -EINVAL; 3429 } 3430 /*convert to Mbps */ 3431 tx_rate = div_u64(mqprio_qopt->max_rate[i], 3432 IAVF_MBPS_DIVISOR); 3433 total_max_rate += tx_rate; 3434 num_qps += mqprio_qopt->qopt.count[i]; 3435 } 3436 if (num_qps > adapter->num_active_queues) { 3437 dev_err(&adapter->pdev->dev, 3438 "Cannot support requested number of queues\n"); 3439 return -EINVAL; 3440 } 3441 3442 ret = iavf_validate_tx_bandwidth(adapter, total_max_rate); 3443 return ret; 3444 } 3445 3446 /** 3447 * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes 3448 * @adapter: board private structure 3449 **/ 3450 static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter) 3451 { 3452 struct iavf_cloud_filter *cf, *cftmp; 3453 3454 spin_lock_bh(&adapter->cloud_filter_list_lock); 3455 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 3456 list) { 3457 list_del(&cf->list); 3458 kfree(cf); 3459 adapter->num_cloud_filters--; 3460 } 3461 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3462 } 3463 3464 /** 3465 * __iavf_setup_tc - configure multiple traffic classes 3466 * @netdev: network interface device structure 3467 * @type_data: tc offload data 3468 * 3469 * This function processes the config information provided by the 3470 * user to configure traffic classes/queue channels and packages the 3471 * information to request the PF to setup traffic classes. 3472 * 3473 * Returns 0 on success. 3474 **/ 3475 static int __iavf_setup_tc(struct net_device *netdev, void *type_data) 3476 { 3477 struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; 3478 struct iavf_adapter *adapter = netdev_priv(netdev); 3479 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3480 u8 num_tc = 0, total_qps = 0; 3481 int ret = 0, netdev_tc = 0; 3482 u64 max_tx_rate; 3483 u16 mode; 3484 int i; 3485 3486 num_tc = mqprio_qopt->qopt.num_tc; 3487 mode = mqprio_qopt->mode; 3488 3489 /* delete queue_channel */ 3490 if (!mqprio_qopt->qopt.hw) { 3491 if (adapter->ch_config.state == __IAVF_TC_RUNNING) { 3492 /* reset the tc configuration */ 3493 netdev_reset_tc(netdev); 3494 adapter->num_tc = 0; 3495 netif_tx_stop_all_queues(netdev); 3496 netif_tx_disable(netdev); 3497 iavf_del_all_cloud_filters(adapter); 3498 adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS; 3499 goto exit; 3500 } else { 3501 return -EINVAL; 3502 } 3503 } 3504 3505 /* add queue channel */ 3506 if (mode == TC_MQPRIO_MODE_CHANNEL) { 3507 if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) { 3508 dev_err(&adapter->pdev->dev, "ADq not supported\n"); 3509 return -EOPNOTSUPP; 3510 } 3511 if (adapter->ch_config.state != __IAVF_TC_INVALID) { 3512 dev_err(&adapter->pdev->dev, "TC configuration already exists\n"); 3513 return -EINVAL; 3514 } 3515 3516 ret = iavf_validate_ch_config(adapter, mqprio_qopt); 3517 if (ret) 3518 return ret; 3519 /* Return if same TC config is requested */ 3520 if (adapter->num_tc == num_tc) 3521 return 0; 3522 adapter->num_tc = num_tc; 3523 3524 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3525 if (i < num_tc) { 3526 adapter->ch_config.ch_info[i].count = 3527 mqprio_qopt->qopt.count[i]; 3528 adapter->ch_config.ch_info[i].offset = 3529 mqprio_qopt->qopt.offset[i]; 3530 total_qps += mqprio_qopt->qopt.count[i]; 3531 max_tx_rate = mqprio_qopt->max_rate[i]; 3532 /* convert to Mbps */ 3533 max_tx_rate = div_u64(max_tx_rate, 3534 IAVF_MBPS_DIVISOR); 3535 adapter->ch_config.ch_info[i].max_tx_rate = 3536 max_tx_rate; 3537 } else { 3538 adapter->ch_config.ch_info[i].count = 1; 3539 adapter->ch_config.ch_info[i].offset = 0; 3540 } 3541 } 3542 adapter->ch_config.total_qps = total_qps; 3543 netif_tx_stop_all_queues(netdev); 3544 netif_tx_disable(netdev); 3545 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS; 3546 netdev_reset_tc(netdev); 3547 /* Report the tc mapping up the stack */ 3548 netdev_set_num_tc(adapter->netdev, num_tc); 3549 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3550 u16 qcount = mqprio_qopt->qopt.count[i]; 3551 u16 qoffset = mqprio_qopt->qopt.offset[i]; 3552 3553 if (i < num_tc) 3554 netdev_set_tc_queue(netdev, netdev_tc++, qcount, 3555 qoffset); 3556 } 3557 } 3558 exit: 3559 return ret; 3560 } 3561 3562 /** 3563 * iavf_parse_cls_flower - Parse tc flower filters provided by kernel 3564 * @adapter: board private structure 3565 * @f: pointer to struct flow_cls_offload 3566 * @filter: pointer to cloud filter structure 3567 */ 3568 static int iavf_parse_cls_flower(struct iavf_adapter *adapter, 3569 struct flow_cls_offload *f, 3570 struct iavf_cloud_filter *filter) 3571 { 3572 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 3573 struct flow_dissector *dissector = rule->match.dissector; 3574 u16 n_proto_mask = 0; 3575 u16 n_proto_key = 0; 3576 u8 field_flags = 0; 3577 u16 addr_type = 0; 3578 u16 n_proto = 0; 3579 int i = 0; 3580 struct virtchnl_filter *vf = &filter->f; 3581 3582 if (dissector->used_keys & 3583 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 3584 BIT(FLOW_DISSECTOR_KEY_BASIC) | 3585 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 3586 BIT(FLOW_DISSECTOR_KEY_VLAN) | 3587 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 3588 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 3589 BIT(FLOW_DISSECTOR_KEY_PORTS) | 3590 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) { 3591 dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%x\n", 3592 dissector->used_keys); 3593 return -EOPNOTSUPP; 3594 } 3595 3596 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 3597 struct flow_match_enc_keyid match; 3598 3599 flow_rule_match_enc_keyid(rule, &match); 3600 if (match.mask->keyid != 0) 3601 field_flags |= IAVF_CLOUD_FIELD_TEN_ID; 3602 } 3603 3604 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 3605 struct flow_match_basic match; 3606 3607 flow_rule_match_basic(rule, &match); 3608 n_proto_key = ntohs(match.key->n_proto); 3609 n_proto_mask = ntohs(match.mask->n_proto); 3610 3611 if (n_proto_key == ETH_P_ALL) { 3612 n_proto_key = 0; 3613 n_proto_mask = 0; 3614 } 3615 n_proto = n_proto_key & n_proto_mask; 3616 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) 3617 return -EINVAL; 3618 if (n_proto == ETH_P_IPV6) { 3619 /* specify flow type as TCP IPv6 */ 3620 vf->flow_type = VIRTCHNL_TCP_V6_FLOW; 3621 } 3622 3623 if (match.key->ip_proto != IPPROTO_TCP) { 3624 dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n"); 3625 return -EINVAL; 3626 } 3627 } 3628 3629 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 3630 struct flow_match_eth_addrs match; 3631 3632 flow_rule_match_eth_addrs(rule, &match); 3633 3634 /* use is_broadcast and is_zero to check for all 0xf or 0 */ 3635 if (!is_zero_ether_addr(match.mask->dst)) { 3636 if (is_broadcast_ether_addr(match.mask->dst)) { 3637 field_flags |= IAVF_CLOUD_FIELD_OMAC; 3638 } else { 3639 dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n", 3640 match.mask->dst); 3641 return -EINVAL; 3642 } 3643 } 3644 3645 if (!is_zero_ether_addr(match.mask->src)) { 3646 if (is_broadcast_ether_addr(match.mask->src)) { 3647 field_flags |= IAVF_CLOUD_FIELD_IMAC; 3648 } else { 3649 dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n", 3650 match.mask->src); 3651 return -EINVAL; 3652 } 3653 } 3654 3655 if (!is_zero_ether_addr(match.key->dst)) 3656 if (is_valid_ether_addr(match.key->dst) || 3657 is_multicast_ether_addr(match.key->dst)) { 3658 /* set the mask if a valid dst_mac address */ 3659 for (i = 0; i < ETH_ALEN; i++) 3660 vf->mask.tcp_spec.dst_mac[i] |= 0xff; 3661 ether_addr_copy(vf->data.tcp_spec.dst_mac, 3662 match.key->dst); 3663 } 3664 3665 if (!is_zero_ether_addr(match.key->src)) 3666 if (is_valid_ether_addr(match.key->src) || 3667 is_multicast_ether_addr(match.key->src)) { 3668 /* set the mask if a valid dst_mac address */ 3669 for (i = 0; i < ETH_ALEN; i++) 3670 vf->mask.tcp_spec.src_mac[i] |= 0xff; 3671 ether_addr_copy(vf->data.tcp_spec.src_mac, 3672 match.key->src); 3673 } 3674 } 3675 3676 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 3677 struct flow_match_vlan match; 3678 3679 flow_rule_match_vlan(rule, &match); 3680 if (match.mask->vlan_id) { 3681 if (match.mask->vlan_id == VLAN_VID_MASK) { 3682 field_flags |= IAVF_CLOUD_FIELD_IVLAN; 3683 } else { 3684 dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n", 3685 match.mask->vlan_id); 3686 return -EINVAL; 3687 } 3688 } 3689 vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff); 3690 vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id); 3691 } 3692 3693 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 3694 struct flow_match_control match; 3695 3696 flow_rule_match_control(rule, &match); 3697 addr_type = match.key->addr_type; 3698 } 3699 3700 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 3701 struct flow_match_ipv4_addrs match; 3702 3703 flow_rule_match_ipv4_addrs(rule, &match); 3704 if (match.mask->dst) { 3705 if (match.mask->dst == cpu_to_be32(0xffffffff)) { 3706 field_flags |= IAVF_CLOUD_FIELD_IIP; 3707 } else { 3708 dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n", 3709 be32_to_cpu(match.mask->dst)); 3710 return -EINVAL; 3711 } 3712 } 3713 3714 if (match.mask->src) { 3715 if (match.mask->src == cpu_to_be32(0xffffffff)) { 3716 field_flags |= IAVF_CLOUD_FIELD_IIP; 3717 } else { 3718 dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n", 3719 be32_to_cpu(match.mask->dst)); 3720 return -EINVAL; 3721 } 3722 } 3723 3724 if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) { 3725 dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n"); 3726 return -EINVAL; 3727 } 3728 if (match.key->dst) { 3729 vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff); 3730 vf->data.tcp_spec.dst_ip[0] = match.key->dst; 3731 } 3732 if (match.key->src) { 3733 vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff); 3734 vf->data.tcp_spec.src_ip[0] = match.key->src; 3735 } 3736 } 3737 3738 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 3739 struct flow_match_ipv6_addrs match; 3740 3741 flow_rule_match_ipv6_addrs(rule, &match); 3742 3743 /* validate mask, make sure it is not IPV6_ADDR_ANY */ 3744 if (ipv6_addr_any(&match.mask->dst)) { 3745 dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n", 3746 IPV6_ADDR_ANY); 3747 return -EINVAL; 3748 } 3749 3750 /* src and dest IPv6 address should not be LOOPBACK 3751 * (0:0:0:0:0:0:0:1) which can be represented as ::1 3752 */ 3753 if (ipv6_addr_loopback(&match.key->dst) || 3754 ipv6_addr_loopback(&match.key->src)) { 3755 dev_err(&adapter->pdev->dev, 3756 "ipv6 addr should not be loopback\n"); 3757 return -EINVAL; 3758 } 3759 if (!ipv6_addr_any(&match.mask->dst) || 3760 !ipv6_addr_any(&match.mask->src)) 3761 field_flags |= IAVF_CLOUD_FIELD_IIP; 3762 3763 for (i = 0; i < 4; i++) 3764 vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff); 3765 memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32, 3766 sizeof(vf->data.tcp_spec.dst_ip)); 3767 for (i = 0; i < 4; i++) 3768 vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff); 3769 memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32, 3770 sizeof(vf->data.tcp_spec.src_ip)); 3771 } 3772 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 3773 struct flow_match_ports match; 3774 3775 flow_rule_match_ports(rule, &match); 3776 if (match.mask->src) { 3777 if (match.mask->src == cpu_to_be16(0xffff)) { 3778 field_flags |= IAVF_CLOUD_FIELD_IIP; 3779 } else { 3780 dev_err(&adapter->pdev->dev, "Bad src port mask %u\n", 3781 be16_to_cpu(match.mask->src)); 3782 return -EINVAL; 3783 } 3784 } 3785 3786 if (match.mask->dst) { 3787 if (match.mask->dst == cpu_to_be16(0xffff)) { 3788 field_flags |= IAVF_CLOUD_FIELD_IIP; 3789 } else { 3790 dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n", 3791 be16_to_cpu(match.mask->dst)); 3792 return -EINVAL; 3793 } 3794 } 3795 if (match.key->dst) { 3796 vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff); 3797 vf->data.tcp_spec.dst_port = match.key->dst; 3798 } 3799 3800 if (match.key->src) { 3801 vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff); 3802 vf->data.tcp_spec.src_port = match.key->src; 3803 } 3804 } 3805 vf->field_flags = field_flags; 3806 3807 return 0; 3808 } 3809 3810 /** 3811 * iavf_handle_tclass - Forward to a traffic class on the device 3812 * @adapter: board private structure 3813 * @tc: traffic class index on the device 3814 * @filter: pointer to cloud filter structure 3815 */ 3816 static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc, 3817 struct iavf_cloud_filter *filter) 3818 { 3819 if (tc == 0) 3820 return 0; 3821 if (tc < adapter->num_tc) { 3822 if (!filter->f.data.tcp_spec.dst_port) { 3823 dev_err(&adapter->pdev->dev, 3824 "Specify destination port to redirect to traffic class other than TC0\n"); 3825 return -EINVAL; 3826 } 3827 } 3828 /* redirect to a traffic class on the same device */ 3829 filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT; 3830 filter->f.action_meta = tc; 3831 return 0; 3832 } 3833 3834 /** 3835 * iavf_configure_clsflower - Add tc flower filters 3836 * @adapter: board private structure 3837 * @cls_flower: Pointer to struct flow_cls_offload 3838 */ 3839 static int iavf_configure_clsflower(struct iavf_adapter *adapter, 3840 struct flow_cls_offload *cls_flower) 3841 { 3842 int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid); 3843 struct iavf_cloud_filter *filter = NULL; 3844 int err = -EINVAL, count = 50; 3845 3846 if (tc < 0) { 3847 dev_err(&adapter->pdev->dev, "Invalid traffic class\n"); 3848 return -EINVAL; 3849 } 3850 3851 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 3852 if (!filter) 3853 return -ENOMEM; 3854 3855 while (!mutex_trylock(&adapter->crit_lock)) { 3856 if (--count == 0) { 3857 kfree(filter); 3858 return err; 3859 } 3860 udelay(1); 3861 } 3862 3863 filter->cookie = cls_flower->cookie; 3864 3865 /* set the mask to all zeroes to begin with */ 3866 memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec)); 3867 /* start out with flow type and eth type IPv4 to begin with */ 3868 filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW; 3869 err = iavf_parse_cls_flower(adapter, cls_flower, filter); 3870 if (err) 3871 goto err; 3872 3873 err = iavf_handle_tclass(adapter, tc, filter); 3874 if (err) 3875 goto err; 3876 3877 /* add filter to the list */ 3878 spin_lock_bh(&adapter->cloud_filter_list_lock); 3879 list_add_tail(&filter->list, &adapter->cloud_filter_list); 3880 adapter->num_cloud_filters++; 3881 filter->add = true; 3882 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 3883 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3884 err: 3885 if (err) 3886 kfree(filter); 3887 3888 mutex_unlock(&adapter->crit_lock); 3889 return err; 3890 } 3891 3892 /* iavf_find_cf - Find the cloud filter in the list 3893 * @adapter: Board private structure 3894 * @cookie: filter specific cookie 3895 * 3896 * Returns ptr to the filter object or NULL. Must be called while holding the 3897 * cloud_filter_list_lock. 3898 */ 3899 static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter, 3900 unsigned long *cookie) 3901 { 3902 struct iavf_cloud_filter *filter = NULL; 3903 3904 if (!cookie) 3905 return NULL; 3906 3907 list_for_each_entry(filter, &adapter->cloud_filter_list, list) { 3908 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie))) 3909 return filter; 3910 } 3911 return NULL; 3912 } 3913 3914 /** 3915 * iavf_delete_clsflower - Remove tc flower filters 3916 * @adapter: board private structure 3917 * @cls_flower: Pointer to struct flow_cls_offload 3918 */ 3919 static int iavf_delete_clsflower(struct iavf_adapter *adapter, 3920 struct flow_cls_offload *cls_flower) 3921 { 3922 struct iavf_cloud_filter *filter = NULL; 3923 int err = 0; 3924 3925 spin_lock_bh(&adapter->cloud_filter_list_lock); 3926 filter = iavf_find_cf(adapter, &cls_flower->cookie); 3927 if (filter) { 3928 filter->del = true; 3929 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 3930 } else { 3931 err = -EINVAL; 3932 } 3933 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3934 3935 return err; 3936 } 3937 3938 /** 3939 * iavf_setup_tc_cls_flower - flower classifier offloads 3940 * @adapter: board private structure 3941 * @cls_flower: pointer to flow_cls_offload struct with flow info 3942 */ 3943 static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter, 3944 struct flow_cls_offload *cls_flower) 3945 { 3946 switch (cls_flower->command) { 3947 case FLOW_CLS_REPLACE: 3948 return iavf_configure_clsflower(adapter, cls_flower); 3949 case FLOW_CLS_DESTROY: 3950 return iavf_delete_clsflower(adapter, cls_flower); 3951 case FLOW_CLS_STATS: 3952 return -EOPNOTSUPP; 3953 default: 3954 return -EOPNOTSUPP; 3955 } 3956 } 3957 3958 /** 3959 * iavf_setup_tc_block_cb - block callback for tc 3960 * @type: type of offload 3961 * @type_data: offload data 3962 * @cb_priv: 3963 * 3964 * This function is the block callback for traffic classes 3965 **/ 3966 static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 3967 void *cb_priv) 3968 { 3969 struct iavf_adapter *adapter = cb_priv; 3970 3971 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 3972 return -EOPNOTSUPP; 3973 3974 switch (type) { 3975 case TC_SETUP_CLSFLOWER: 3976 return iavf_setup_tc_cls_flower(cb_priv, type_data); 3977 default: 3978 return -EOPNOTSUPP; 3979 } 3980 } 3981 3982 static LIST_HEAD(iavf_block_cb_list); 3983 3984 /** 3985 * iavf_setup_tc - configure multiple traffic classes 3986 * @netdev: network interface device structure 3987 * @type: type of offload 3988 * @type_data: tc offload data 3989 * 3990 * This function is the callback to ndo_setup_tc in the 3991 * netdev_ops. 3992 * 3993 * Returns 0 on success 3994 **/ 3995 static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, 3996 void *type_data) 3997 { 3998 struct iavf_adapter *adapter = netdev_priv(netdev); 3999 4000 switch (type) { 4001 case TC_SETUP_QDISC_MQPRIO: 4002 return __iavf_setup_tc(netdev, type_data); 4003 case TC_SETUP_BLOCK: 4004 return flow_block_cb_setup_simple(type_data, 4005 &iavf_block_cb_list, 4006 iavf_setup_tc_block_cb, 4007 adapter, adapter, true); 4008 default: 4009 return -EOPNOTSUPP; 4010 } 4011 } 4012 4013 /** 4014 * iavf_open - Called when a network interface is made active 4015 * @netdev: network interface device structure 4016 * 4017 * Returns 0 on success, negative value on failure 4018 * 4019 * The open entry point is called when a network interface is made 4020 * active by the system (IFF_UP). At this point all resources needed 4021 * for transmit and receive operations are allocated, the interrupt 4022 * handler is registered with the OS, the watchdog is started, 4023 * and the stack is notified that the interface is ready. 4024 **/ 4025 static int iavf_open(struct net_device *netdev) 4026 { 4027 struct iavf_adapter *adapter = netdev_priv(netdev); 4028 int err; 4029 4030 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) { 4031 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); 4032 return -EIO; 4033 } 4034 4035 while (!mutex_trylock(&adapter->crit_lock)) 4036 usleep_range(500, 1000); 4037 4038 if (adapter->state != __IAVF_DOWN) { 4039 err = -EBUSY; 4040 goto err_unlock; 4041 } 4042 4043 if (adapter->state == __IAVF_RUNNING && 4044 !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) { 4045 dev_dbg(&adapter->pdev->dev, "VF is already open.\n"); 4046 err = 0; 4047 goto err_unlock; 4048 } 4049 4050 /* allocate transmit descriptors */ 4051 err = iavf_setup_all_tx_resources(adapter); 4052 if (err) 4053 goto err_setup_tx; 4054 4055 /* allocate receive descriptors */ 4056 err = iavf_setup_all_rx_resources(adapter); 4057 if (err) 4058 goto err_setup_rx; 4059 4060 /* clear any pending interrupts, may auto mask */ 4061 err = iavf_request_traffic_irqs(adapter, netdev->name); 4062 if (err) 4063 goto err_req_irq; 4064 4065 spin_lock_bh(&adapter->mac_vlan_list_lock); 4066 4067 iavf_add_filter(adapter, adapter->hw.mac.addr); 4068 4069 spin_unlock_bh(&adapter->mac_vlan_list_lock); 4070 4071 /* Restore VLAN filters that were removed with IFF_DOWN */ 4072 iavf_restore_filters(adapter); 4073 4074 iavf_configure(adapter); 4075 4076 iavf_up_complete(adapter); 4077 4078 iavf_irq_enable(adapter, true); 4079 4080 mutex_unlock(&adapter->crit_lock); 4081 4082 return 0; 4083 4084 err_req_irq: 4085 iavf_down(adapter); 4086 iavf_free_traffic_irqs(adapter); 4087 err_setup_rx: 4088 iavf_free_all_rx_resources(adapter); 4089 err_setup_tx: 4090 iavf_free_all_tx_resources(adapter); 4091 err_unlock: 4092 mutex_unlock(&adapter->crit_lock); 4093 4094 return err; 4095 } 4096 4097 /** 4098 * iavf_close - Disables a network interface 4099 * @netdev: network interface device structure 4100 * 4101 * Returns 0, this is not allowed to fail 4102 * 4103 * The close entry point is called when an interface is de-activated 4104 * by the OS. The hardware is still under the drivers control, but 4105 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) 4106 * are freed, along with all transmit and receive resources. 4107 **/ 4108 static int iavf_close(struct net_device *netdev) 4109 { 4110 struct iavf_adapter *adapter = netdev_priv(netdev); 4111 int status; 4112 4113 mutex_lock(&adapter->crit_lock); 4114 4115 if (adapter->state <= __IAVF_DOWN_PENDING) { 4116 mutex_unlock(&adapter->crit_lock); 4117 return 0; 4118 } 4119 4120 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 4121 if (CLIENT_ENABLED(adapter)) 4122 adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_CLOSE; 4123 4124 iavf_down(adapter); 4125 iavf_change_state(adapter, __IAVF_DOWN_PENDING); 4126 iavf_free_traffic_irqs(adapter); 4127 4128 mutex_unlock(&adapter->crit_lock); 4129 4130 /* We explicitly don't free resources here because the hardware is 4131 * still active and can DMA into memory. Resources are cleared in 4132 * iavf_virtchnl_completion() after we get confirmation from the PF 4133 * driver that the rings have been stopped. 4134 * 4135 * Also, we wait for state to transition to __IAVF_DOWN before 4136 * returning. State change occurs in iavf_virtchnl_completion() after 4137 * VF resources are released (which occurs after PF driver processes and 4138 * responds to admin queue commands). 4139 */ 4140 4141 status = wait_event_timeout(adapter->down_waitqueue, 4142 adapter->state == __IAVF_DOWN, 4143 msecs_to_jiffies(500)); 4144 if (!status) 4145 netdev_warn(netdev, "Device resources not yet released\n"); 4146 return 0; 4147 } 4148 4149 /** 4150 * iavf_change_mtu - Change the Maximum Transfer Unit 4151 * @netdev: network interface device structure 4152 * @new_mtu: new value for maximum frame size 4153 * 4154 * Returns 0 on success, negative on failure 4155 **/ 4156 static int iavf_change_mtu(struct net_device *netdev, int new_mtu) 4157 { 4158 struct iavf_adapter *adapter = netdev_priv(netdev); 4159 4160 netdev_dbg(netdev, "changing MTU from %d to %d\n", 4161 netdev->mtu, new_mtu); 4162 netdev->mtu = new_mtu; 4163 if (CLIENT_ENABLED(adapter)) { 4164 iavf_notify_client_l2_params(&adapter->vsi); 4165 adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED; 4166 } 4167 4168 if (netif_running(netdev)) { 4169 adapter->flags |= IAVF_FLAG_RESET_NEEDED; 4170 queue_work(iavf_wq, &adapter->reset_task); 4171 } 4172 4173 return 0; 4174 } 4175 4176 #define NETIF_VLAN_OFFLOAD_FEATURES (NETIF_F_HW_VLAN_CTAG_RX | \ 4177 NETIF_F_HW_VLAN_CTAG_TX | \ 4178 NETIF_F_HW_VLAN_STAG_RX | \ 4179 NETIF_F_HW_VLAN_STAG_TX) 4180 4181 /** 4182 * iavf_set_features - set the netdev feature flags 4183 * @netdev: ptr to the netdev being adjusted 4184 * @features: the feature set that the stack is suggesting 4185 * Note: expects to be called while under rtnl_lock() 4186 **/ 4187 static int iavf_set_features(struct net_device *netdev, 4188 netdev_features_t features) 4189 { 4190 struct iavf_adapter *adapter = netdev_priv(netdev); 4191 4192 /* trigger update on any VLAN feature change */ 4193 if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^ 4194 (features & NETIF_VLAN_OFFLOAD_FEATURES)) 4195 iavf_set_vlan_offload_features(adapter, netdev->features, 4196 features); 4197 4198 return 0; 4199 } 4200 4201 /** 4202 * iavf_features_check - Validate encapsulated packet conforms to limits 4203 * @skb: skb buff 4204 * @dev: This physical port's netdev 4205 * @features: Offload features that the stack believes apply 4206 **/ 4207 static netdev_features_t iavf_features_check(struct sk_buff *skb, 4208 struct net_device *dev, 4209 netdev_features_t features) 4210 { 4211 size_t len; 4212 4213 /* No point in doing any of this if neither checksum nor GSO are 4214 * being requested for this frame. We can rule out both by just 4215 * checking for CHECKSUM_PARTIAL 4216 */ 4217 if (skb->ip_summed != CHECKSUM_PARTIAL) 4218 return features; 4219 4220 /* We cannot support GSO if the MSS is going to be less than 4221 * 64 bytes. If it is then we need to drop support for GSO. 4222 */ 4223 if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64)) 4224 features &= ~NETIF_F_GSO_MASK; 4225 4226 /* MACLEN can support at most 63 words */ 4227 len = skb_network_header(skb) - skb->data; 4228 if (len & ~(63 * 2)) 4229 goto out_err; 4230 4231 /* IPLEN and EIPLEN can support at most 127 dwords */ 4232 len = skb_transport_header(skb) - skb_network_header(skb); 4233 if (len & ~(127 * 4)) 4234 goto out_err; 4235 4236 if (skb->encapsulation) { 4237 /* L4TUNLEN can support 127 words */ 4238 len = skb_inner_network_header(skb) - skb_transport_header(skb); 4239 if (len & ~(127 * 2)) 4240 goto out_err; 4241 4242 /* IPLEN can support at most 127 dwords */ 4243 len = skb_inner_transport_header(skb) - 4244 skb_inner_network_header(skb); 4245 if (len & ~(127 * 4)) 4246 goto out_err; 4247 } 4248 4249 /* No need to validate L4LEN as TCP is the only protocol with a 4250 * flexible value and we support all possible values supported 4251 * by TCP, which is at most 15 dwords 4252 */ 4253 4254 return features; 4255 out_err: 4256 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 4257 } 4258 4259 /** 4260 * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off 4261 * @adapter: board private structure 4262 * 4263 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4264 * were negotiated determine the VLAN features that can be toggled on and off. 4265 **/ 4266 static netdev_features_t 4267 iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter) 4268 { 4269 netdev_features_t hw_features = 0; 4270 4271 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4272 return hw_features; 4273 4274 /* Enable VLAN features if supported */ 4275 if (VLAN_ALLOWED(adapter)) { 4276 hw_features |= (NETIF_F_HW_VLAN_CTAG_TX | 4277 NETIF_F_HW_VLAN_CTAG_RX); 4278 } else if (VLAN_V2_ALLOWED(adapter)) { 4279 struct virtchnl_vlan_caps *vlan_v2_caps = 4280 &adapter->vlan_v2_caps; 4281 struct virtchnl_vlan_supported_caps *stripping_support = 4282 &vlan_v2_caps->offloads.stripping_support; 4283 struct virtchnl_vlan_supported_caps *insertion_support = 4284 &vlan_v2_caps->offloads.insertion_support; 4285 4286 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4287 stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4288 if (stripping_support->outer & 4289 VIRTCHNL_VLAN_ETHERTYPE_8100) 4290 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4291 if (stripping_support->outer & 4292 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4293 hw_features |= NETIF_F_HW_VLAN_STAG_RX; 4294 } else if (stripping_support->inner != 4295 VIRTCHNL_VLAN_UNSUPPORTED && 4296 stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4297 if (stripping_support->inner & 4298 VIRTCHNL_VLAN_ETHERTYPE_8100) 4299 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4300 } 4301 4302 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4303 insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4304 if (insertion_support->outer & 4305 VIRTCHNL_VLAN_ETHERTYPE_8100) 4306 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4307 if (insertion_support->outer & 4308 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4309 hw_features |= NETIF_F_HW_VLAN_STAG_TX; 4310 } else if (insertion_support->inner && 4311 insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4312 if (insertion_support->inner & 4313 VIRTCHNL_VLAN_ETHERTYPE_8100) 4314 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4315 } 4316 } 4317 4318 return hw_features; 4319 } 4320 4321 /** 4322 * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures 4323 * @adapter: board private structure 4324 * 4325 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4326 * were negotiated determine the VLAN features that are enabled by default. 4327 **/ 4328 static netdev_features_t 4329 iavf_get_netdev_vlan_features(struct iavf_adapter *adapter) 4330 { 4331 netdev_features_t features = 0; 4332 4333 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4334 return features; 4335 4336 if (VLAN_ALLOWED(adapter)) { 4337 features |= NETIF_F_HW_VLAN_CTAG_FILTER | 4338 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX; 4339 } else if (VLAN_V2_ALLOWED(adapter)) { 4340 struct virtchnl_vlan_caps *vlan_v2_caps = 4341 &adapter->vlan_v2_caps; 4342 struct virtchnl_vlan_supported_caps *filtering_support = 4343 &vlan_v2_caps->filtering.filtering_support; 4344 struct virtchnl_vlan_supported_caps *stripping_support = 4345 &vlan_v2_caps->offloads.stripping_support; 4346 struct virtchnl_vlan_supported_caps *insertion_support = 4347 &vlan_v2_caps->offloads.insertion_support; 4348 u32 ethertype_init; 4349 4350 /* give priority to outer stripping and don't support both outer 4351 * and inner stripping 4352 */ 4353 ethertype_init = vlan_v2_caps->offloads.ethertype_init; 4354 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4355 if (stripping_support->outer & 4356 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4357 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4358 features |= NETIF_F_HW_VLAN_CTAG_RX; 4359 else if (stripping_support->outer & 4360 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4361 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4362 features |= NETIF_F_HW_VLAN_STAG_RX; 4363 } else if (stripping_support->inner != 4364 VIRTCHNL_VLAN_UNSUPPORTED) { 4365 if (stripping_support->inner & 4366 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4367 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4368 features |= NETIF_F_HW_VLAN_CTAG_RX; 4369 } 4370 4371 /* give priority to outer insertion and don't support both outer 4372 * and inner insertion 4373 */ 4374 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4375 if (insertion_support->outer & 4376 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4377 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4378 features |= NETIF_F_HW_VLAN_CTAG_TX; 4379 else if (insertion_support->outer & 4380 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4381 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4382 features |= NETIF_F_HW_VLAN_STAG_TX; 4383 } else if (insertion_support->inner != 4384 VIRTCHNL_VLAN_UNSUPPORTED) { 4385 if (insertion_support->inner & 4386 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4387 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4388 features |= NETIF_F_HW_VLAN_CTAG_TX; 4389 } 4390 4391 /* give priority to outer filtering and don't bother if both 4392 * outer and inner filtering are enabled 4393 */ 4394 ethertype_init = vlan_v2_caps->filtering.ethertype_init; 4395 if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4396 if (filtering_support->outer & 4397 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4398 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4399 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4400 if (filtering_support->outer & 4401 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4402 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4403 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4404 } else if (filtering_support->inner != 4405 VIRTCHNL_VLAN_UNSUPPORTED) { 4406 if (filtering_support->inner & 4407 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4408 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4409 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4410 if (filtering_support->inner & 4411 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4412 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4413 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4414 } 4415 } 4416 4417 return features; 4418 } 4419 4420 #define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \ 4421 (!(((requested) & (feature_bit)) && \ 4422 !((allowed) & (feature_bit)))) 4423 4424 /** 4425 * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support 4426 * @adapter: board private structure 4427 * @requested_features: stack requested NETDEV features 4428 **/ 4429 static netdev_features_t 4430 iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter, 4431 netdev_features_t requested_features) 4432 { 4433 netdev_features_t allowed_features; 4434 4435 allowed_features = iavf_get_netdev_vlan_hw_features(adapter) | 4436 iavf_get_netdev_vlan_features(adapter); 4437 4438 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4439 allowed_features, 4440 NETIF_F_HW_VLAN_CTAG_TX)) 4441 requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX; 4442 4443 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4444 allowed_features, 4445 NETIF_F_HW_VLAN_CTAG_RX)) 4446 requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX; 4447 4448 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4449 allowed_features, 4450 NETIF_F_HW_VLAN_STAG_TX)) 4451 requested_features &= ~NETIF_F_HW_VLAN_STAG_TX; 4452 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4453 allowed_features, 4454 NETIF_F_HW_VLAN_STAG_RX)) 4455 requested_features &= ~NETIF_F_HW_VLAN_STAG_RX; 4456 4457 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4458 allowed_features, 4459 NETIF_F_HW_VLAN_CTAG_FILTER)) 4460 requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4461 4462 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4463 allowed_features, 4464 NETIF_F_HW_VLAN_STAG_FILTER)) 4465 requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER; 4466 4467 if ((requested_features & 4468 (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) && 4469 (requested_features & 4470 (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) && 4471 adapter->vlan_v2_caps.offloads.ethertype_match == 4472 VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) { 4473 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"); 4474 requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX | 4475 NETIF_F_HW_VLAN_STAG_TX); 4476 } 4477 4478 return requested_features; 4479 } 4480 4481 /** 4482 * iavf_fix_features - fix up the netdev feature bits 4483 * @netdev: our net device 4484 * @features: desired feature bits 4485 * 4486 * Returns fixed-up features bits 4487 **/ 4488 static netdev_features_t iavf_fix_features(struct net_device *netdev, 4489 netdev_features_t features) 4490 { 4491 struct iavf_adapter *adapter = netdev_priv(netdev); 4492 4493 return iavf_fix_netdev_vlan_features(adapter, features); 4494 } 4495 4496 static const struct net_device_ops iavf_netdev_ops = { 4497 .ndo_open = iavf_open, 4498 .ndo_stop = iavf_close, 4499 .ndo_start_xmit = iavf_xmit_frame, 4500 .ndo_set_rx_mode = iavf_set_rx_mode, 4501 .ndo_validate_addr = eth_validate_addr, 4502 .ndo_set_mac_address = iavf_set_mac, 4503 .ndo_change_mtu = iavf_change_mtu, 4504 .ndo_tx_timeout = iavf_tx_timeout, 4505 .ndo_vlan_rx_add_vid = iavf_vlan_rx_add_vid, 4506 .ndo_vlan_rx_kill_vid = iavf_vlan_rx_kill_vid, 4507 .ndo_features_check = iavf_features_check, 4508 .ndo_fix_features = iavf_fix_features, 4509 .ndo_set_features = iavf_set_features, 4510 .ndo_setup_tc = iavf_setup_tc, 4511 }; 4512 4513 /** 4514 * iavf_check_reset_complete - check that VF reset is complete 4515 * @hw: pointer to hw struct 4516 * 4517 * Returns 0 if device is ready to use, or -EBUSY if it's in reset. 4518 **/ 4519 static int iavf_check_reset_complete(struct iavf_hw *hw) 4520 { 4521 u32 rstat; 4522 int i; 4523 4524 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 4525 rstat = rd32(hw, IAVF_VFGEN_RSTAT) & 4526 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 4527 if ((rstat == VIRTCHNL_VFR_VFACTIVE) || 4528 (rstat == VIRTCHNL_VFR_COMPLETED)) 4529 return 0; 4530 usleep_range(10, 20); 4531 } 4532 return -EBUSY; 4533 } 4534 4535 /** 4536 * iavf_process_config - Process the config information we got from the PF 4537 * @adapter: board private structure 4538 * 4539 * Verify that we have a valid config struct, and set up our netdev features 4540 * and our VSI struct. 4541 **/ 4542 int iavf_process_config(struct iavf_adapter *adapter) 4543 { 4544 struct virtchnl_vf_resource *vfres = adapter->vf_res; 4545 netdev_features_t hw_vlan_features, vlan_features; 4546 struct net_device *netdev = adapter->netdev; 4547 netdev_features_t hw_enc_features; 4548 netdev_features_t hw_features; 4549 4550 hw_enc_features = NETIF_F_SG | 4551 NETIF_F_IP_CSUM | 4552 NETIF_F_IPV6_CSUM | 4553 NETIF_F_HIGHDMA | 4554 NETIF_F_SOFT_FEATURES | 4555 NETIF_F_TSO | 4556 NETIF_F_TSO_ECN | 4557 NETIF_F_TSO6 | 4558 NETIF_F_SCTP_CRC | 4559 NETIF_F_RXHASH | 4560 NETIF_F_RXCSUM | 4561 0; 4562 4563 /* advertise to stack only if offloads for encapsulated packets is 4564 * supported 4565 */ 4566 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) { 4567 hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL | 4568 NETIF_F_GSO_GRE | 4569 NETIF_F_GSO_GRE_CSUM | 4570 NETIF_F_GSO_IPXIP4 | 4571 NETIF_F_GSO_IPXIP6 | 4572 NETIF_F_GSO_UDP_TUNNEL_CSUM | 4573 NETIF_F_GSO_PARTIAL | 4574 0; 4575 4576 if (!(vfres->vf_cap_flags & 4577 VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 4578 netdev->gso_partial_features |= 4579 NETIF_F_GSO_UDP_TUNNEL_CSUM; 4580 4581 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; 4582 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; 4583 netdev->hw_enc_features |= hw_enc_features; 4584 } 4585 /* record features VLANs can make use of */ 4586 netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID; 4587 4588 /* Write features and hw_features separately to avoid polluting 4589 * with, or dropping, features that are set when we registered. 4590 */ 4591 hw_features = hw_enc_features; 4592 4593 /* get HW VLAN features that can be toggled */ 4594 hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter); 4595 4596 /* Enable cloud filter if ADQ is supported */ 4597 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) 4598 hw_features |= NETIF_F_HW_TC; 4599 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO) 4600 hw_features |= NETIF_F_GSO_UDP_L4; 4601 4602 netdev->hw_features |= hw_features | hw_vlan_features; 4603 vlan_features = iavf_get_netdev_vlan_features(adapter); 4604 4605 netdev->features |= hw_features | vlan_features; 4606 4607 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN) 4608 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4609 4610 netdev->priv_flags |= IFF_UNICAST_FLT; 4611 4612 /* Do not turn on offloads when they are requested to be turned off. 4613 * TSO needs minimum 576 bytes to work correctly. 4614 */ 4615 if (netdev->wanted_features) { 4616 if (!(netdev->wanted_features & NETIF_F_TSO) || 4617 netdev->mtu < 576) 4618 netdev->features &= ~NETIF_F_TSO; 4619 if (!(netdev->wanted_features & NETIF_F_TSO6) || 4620 netdev->mtu < 576) 4621 netdev->features &= ~NETIF_F_TSO6; 4622 if (!(netdev->wanted_features & NETIF_F_TSO_ECN)) 4623 netdev->features &= ~NETIF_F_TSO_ECN; 4624 if (!(netdev->wanted_features & NETIF_F_GRO)) 4625 netdev->features &= ~NETIF_F_GRO; 4626 if (!(netdev->wanted_features & NETIF_F_GSO)) 4627 netdev->features &= ~NETIF_F_GSO; 4628 } 4629 4630 return 0; 4631 } 4632 4633 /** 4634 * iavf_shutdown - Shutdown the device in preparation for a reboot 4635 * @pdev: pci device structure 4636 **/ 4637 static void iavf_shutdown(struct pci_dev *pdev) 4638 { 4639 struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev); 4640 struct net_device *netdev = adapter->netdev; 4641 4642 netif_device_detach(netdev); 4643 4644 if (netif_running(netdev)) 4645 iavf_close(netdev); 4646 4647 if (iavf_lock_timeout(&adapter->crit_lock, 5000)) 4648 dev_warn(&adapter->pdev->dev, "failed to acquire crit_lock in %s\n", __FUNCTION__); 4649 /* Prevent the watchdog from running. */ 4650 iavf_change_state(adapter, __IAVF_REMOVE); 4651 adapter->aq_required = 0; 4652 mutex_unlock(&adapter->crit_lock); 4653 4654 #ifdef CONFIG_PM 4655 pci_save_state(pdev); 4656 4657 #endif 4658 pci_disable_device(pdev); 4659 } 4660 4661 /** 4662 * iavf_probe - Device Initialization Routine 4663 * @pdev: PCI device information struct 4664 * @ent: entry in iavf_pci_tbl 4665 * 4666 * Returns 0 on success, negative on failure 4667 * 4668 * iavf_probe initializes an adapter identified by a pci_dev structure. 4669 * The OS initialization, configuring of the adapter private structure, 4670 * and a hardware reset occur. 4671 **/ 4672 static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 4673 { 4674 struct net_device *netdev; 4675 struct iavf_adapter *adapter = NULL; 4676 struct iavf_hw *hw = NULL; 4677 int err; 4678 4679 err = pci_enable_device(pdev); 4680 if (err) 4681 return err; 4682 4683 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 4684 if (err) { 4685 dev_err(&pdev->dev, 4686 "DMA configuration failed: 0x%x\n", err); 4687 goto err_dma; 4688 } 4689 4690 err = pci_request_regions(pdev, iavf_driver_name); 4691 if (err) { 4692 dev_err(&pdev->dev, 4693 "pci_request_regions failed 0x%x\n", err); 4694 goto err_pci_reg; 4695 } 4696 4697 pci_enable_pcie_error_reporting(pdev); 4698 4699 pci_set_master(pdev); 4700 4701 netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter), 4702 IAVF_MAX_REQ_QUEUES); 4703 if (!netdev) { 4704 err = -ENOMEM; 4705 goto err_alloc_etherdev; 4706 } 4707 4708 SET_NETDEV_DEV(netdev, &pdev->dev); 4709 4710 pci_set_drvdata(pdev, netdev); 4711 adapter = netdev_priv(netdev); 4712 4713 adapter->netdev = netdev; 4714 adapter->pdev = pdev; 4715 4716 hw = &adapter->hw; 4717 hw->back = adapter; 4718 4719 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 4720 iavf_change_state(adapter, __IAVF_STARTUP); 4721 4722 /* Call save state here because it relies on the adapter struct. */ 4723 pci_save_state(pdev); 4724 4725 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 4726 pci_resource_len(pdev, 0)); 4727 if (!hw->hw_addr) { 4728 err = -EIO; 4729 goto err_ioremap; 4730 } 4731 hw->vendor_id = pdev->vendor; 4732 hw->device_id = pdev->device; 4733 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); 4734 hw->subsystem_vendor_id = pdev->subsystem_vendor; 4735 hw->subsystem_device_id = pdev->subsystem_device; 4736 hw->bus.device = PCI_SLOT(pdev->devfn); 4737 hw->bus.func = PCI_FUNC(pdev->devfn); 4738 hw->bus.bus_id = pdev->bus->number; 4739 4740 /* set up the locks for the AQ, do this only once in probe 4741 * and destroy them only once in remove 4742 */ 4743 mutex_init(&adapter->crit_lock); 4744 mutex_init(&adapter->client_lock); 4745 mutex_init(&hw->aq.asq_mutex); 4746 mutex_init(&hw->aq.arq_mutex); 4747 4748 spin_lock_init(&adapter->mac_vlan_list_lock); 4749 spin_lock_init(&adapter->cloud_filter_list_lock); 4750 spin_lock_init(&adapter->fdir_fltr_lock); 4751 spin_lock_init(&adapter->adv_rss_lock); 4752 4753 INIT_LIST_HEAD(&adapter->mac_filter_list); 4754 INIT_LIST_HEAD(&adapter->vlan_filter_list); 4755 INIT_LIST_HEAD(&adapter->cloud_filter_list); 4756 INIT_LIST_HEAD(&adapter->fdir_list_head); 4757 INIT_LIST_HEAD(&adapter->adv_rss_list_head); 4758 4759 INIT_WORK(&adapter->reset_task, iavf_reset_task); 4760 INIT_WORK(&adapter->adminq_task, iavf_adminq_task); 4761 INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task); 4762 INIT_DELAYED_WORK(&adapter->client_task, iavf_client_task); 4763 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 4764 msecs_to_jiffies(5 * (pdev->devfn & 0x07))); 4765 4766 /* Setup the wait queue for indicating transition to down status */ 4767 init_waitqueue_head(&adapter->down_waitqueue); 4768 4769 /* Setup the wait queue for indicating virtchannel events */ 4770 init_waitqueue_head(&adapter->vc_waitqueue); 4771 4772 return 0; 4773 4774 err_ioremap: 4775 free_netdev(netdev); 4776 err_alloc_etherdev: 4777 pci_disable_pcie_error_reporting(pdev); 4778 pci_release_regions(pdev); 4779 err_pci_reg: 4780 err_dma: 4781 pci_disable_device(pdev); 4782 return err; 4783 } 4784 4785 /** 4786 * iavf_suspend - Power management suspend routine 4787 * @dev_d: device info pointer 4788 * 4789 * Called when the system (VM) is entering sleep/suspend. 4790 **/ 4791 static int __maybe_unused iavf_suspend(struct device *dev_d) 4792 { 4793 struct net_device *netdev = dev_get_drvdata(dev_d); 4794 struct iavf_adapter *adapter = netdev_priv(netdev); 4795 4796 netif_device_detach(netdev); 4797 4798 while (!mutex_trylock(&adapter->crit_lock)) 4799 usleep_range(500, 1000); 4800 4801 if (netif_running(netdev)) { 4802 rtnl_lock(); 4803 iavf_down(adapter); 4804 rtnl_unlock(); 4805 } 4806 iavf_free_misc_irq(adapter); 4807 iavf_reset_interrupt_capability(adapter); 4808 4809 mutex_unlock(&adapter->crit_lock); 4810 4811 return 0; 4812 } 4813 4814 /** 4815 * iavf_resume - Power management resume routine 4816 * @dev_d: device info pointer 4817 * 4818 * Called when the system (VM) is resumed from sleep/suspend. 4819 **/ 4820 static int __maybe_unused iavf_resume(struct device *dev_d) 4821 { 4822 struct pci_dev *pdev = to_pci_dev(dev_d); 4823 struct iavf_adapter *adapter; 4824 u32 err; 4825 4826 adapter = iavf_pdev_to_adapter(pdev); 4827 4828 pci_set_master(pdev); 4829 4830 rtnl_lock(); 4831 err = iavf_set_interrupt_capability(adapter); 4832 if (err) { 4833 rtnl_unlock(); 4834 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); 4835 return err; 4836 } 4837 err = iavf_request_misc_irq(adapter); 4838 rtnl_unlock(); 4839 if (err) { 4840 dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); 4841 return err; 4842 } 4843 4844 queue_work(iavf_wq, &adapter->reset_task); 4845 4846 netif_device_attach(adapter->netdev); 4847 4848 return err; 4849 } 4850 4851 /** 4852 * iavf_remove - Device Removal Routine 4853 * @pdev: PCI device information struct 4854 * 4855 * iavf_remove is called by the PCI subsystem to alert the driver 4856 * that it should release a PCI device. The could be caused by a 4857 * Hot-Plug event, or because the driver is going to be removed from 4858 * memory. 4859 **/ 4860 static void iavf_remove(struct pci_dev *pdev) 4861 { 4862 struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev); 4863 struct net_device *netdev = adapter->netdev; 4864 struct iavf_fdir_fltr *fdir, *fdirtmp; 4865 struct iavf_vlan_filter *vlf, *vlftmp; 4866 struct iavf_adv_rss *rss, *rsstmp; 4867 struct iavf_mac_filter *f, *ftmp; 4868 struct iavf_cloud_filter *cf, *cftmp; 4869 struct iavf_hw *hw = &adapter->hw; 4870 int err; 4871 4872 /* When reboot/shutdown is in progress no need to do anything 4873 * as the adapter is already REMOVE state that was set during 4874 * iavf_shutdown() callback. 4875 */ 4876 if (adapter->state == __IAVF_REMOVE) 4877 return; 4878 4879 set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section); 4880 /* Wait until port initialization is complete. 4881 * There are flows where register/unregister netdev may race. 4882 */ 4883 while (1) { 4884 mutex_lock(&adapter->crit_lock); 4885 if (adapter->state == __IAVF_RUNNING || 4886 adapter->state == __IAVF_DOWN || 4887 adapter->state == __IAVF_INIT_FAILED) { 4888 mutex_unlock(&adapter->crit_lock); 4889 break; 4890 } 4891 4892 mutex_unlock(&adapter->crit_lock); 4893 usleep_range(500, 1000); 4894 } 4895 cancel_delayed_work_sync(&adapter->watchdog_task); 4896 4897 if (adapter->netdev_registered) { 4898 rtnl_lock(); 4899 unregister_netdevice(netdev); 4900 adapter->netdev_registered = false; 4901 rtnl_unlock(); 4902 } 4903 if (CLIENT_ALLOWED(adapter)) { 4904 err = iavf_lan_del_device(adapter); 4905 if (err) 4906 dev_warn(&pdev->dev, "Failed to delete client device: %d\n", 4907 err); 4908 } 4909 4910 mutex_lock(&adapter->crit_lock); 4911 dev_info(&adapter->pdev->dev, "Remove device\n"); 4912 iavf_change_state(adapter, __IAVF_REMOVE); 4913 4914 iavf_request_reset(adapter); 4915 msleep(50); 4916 /* If the FW isn't responding, kick it once, but only once. */ 4917 if (!iavf_asq_done(hw)) { 4918 iavf_request_reset(adapter); 4919 msleep(50); 4920 } 4921 4922 iavf_misc_irq_disable(adapter); 4923 /* Shut down all the garbage mashers on the detention level */ 4924 cancel_work_sync(&adapter->reset_task); 4925 cancel_delayed_work_sync(&adapter->watchdog_task); 4926 cancel_work_sync(&adapter->adminq_task); 4927 cancel_delayed_work_sync(&adapter->client_task); 4928 4929 adapter->aq_required = 0; 4930 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 4931 4932 iavf_free_all_tx_resources(adapter); 4933 iavf_free_all_rx_resources(adapter); 4934 iavf_free_misc_irq(adapter); 4935 4936 iavf_reset_interrupt_capability(adapter); 4937 iavf_free_q_vectors(adapter); 4938 4939 iavf_free_rss(adapter); 4940 4941 if (hw->aq.asq.count) 4942 iavf_shutdown_adminq(hw); 4943 4944 /* destroy the locks only once, here */ 4945 mutex_destroy(&hw->aq.arq_mutex); 4946 mutex_destroy(&hw->aq.asq_mutex); 4947 mutex_destroy(&adapter->client_lock); 4948 mutex_unlock(&adapter->crit_lock); 4949 mutex_destroy(&adapter->crit_lock); 4950 4951 iounmap(hw->hw_addr); 4952 pci_release_regions(pdev); 4953 iavf_free_queues(adapter); 4954 kfree(adapter->vf_res); 4955 spin_lock_bh(&adapter->mac_vlan_list_lock); 4956 /* If we got removed before an up/down sequence, we've got a filter 4957 * hanging out there that we need to get rid of. 4958 */ 4959 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 4960 list_del(&f->list); 4961 kfree(f); 4962 } 4963 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 4964 list) { 4965 list_del(&vlf->list); 4966 kfree(vlf); 4967 } 4968 4969 spin_unlock_bh(&adapter->mac_vlan_list_lock); 4970 4971 spin_lock_bh(&adapter->cloud_filter_list_lock); 4972 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 4973 list_del(&cf->list); 4974 kfree(cf); 4975 } 4976 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4977 4978 spin_lock_bh(&adapter->fdir_fltr_lock); 4979 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) { 4980 list_del(&fdir->list); 4981 kfree(fdir); 4982 } 4983 spin_unlock_bh(&adapter->fdir_fltr_lock); 4984 4985 spin_lock_bh(&adapter->adv_rss_lock); 4986 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 4987 list) { 4988 list_del(&rss->list); 4989 kfree(rss); 4990 } 4991 spin_unlock_bh(&adapter->adv_rss_lock); 4992 4993 free_netdev(netdev); 4994 4995 pci_disable_pcie_error_reporting(pdev); 4996 4997 pci_disable_device(pdev); 4998 } 4999 5000 static SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume); 5001 5002 static struct pci_driver iavf_driver = { 5003 .name = iavf_driver_name, 5004 .id_table = iavf_pci_tbl, 5005 .probe = iavf_probe, 5006 .remove = iavf_remove, 5007 .driver.pm = &iavf_pm_ops, 5008 .shutdown = iavf_shutdown, 5009 }; 5010 5011 /** 5012 * iavf_init_module - Driver Registration Routine 5013 * 5014 * iavf_init_module is the first routine called when the driver is 5015 * loaded. All it does is register with the PCI subsystem. 5016 **/ 5017 static int __init iavf_init_module(void) 5018 { 5019 pr_info("iavf: %s\n", iavf_driver_string); 5020 5021 pr_info("%s\n", iavf_copyright); 5022 5023 iavf_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1, 5024 iavf_driver_name); 5025 if (!iavf_wq) { 5026 pr_err("%s: Failed to create workqueue\n", iavf_driver_name); 5027 return -ENOMEM; 5028 } 5029 return pci_register_driver(&iavf_driver); 5030 } 5031 5032 module_init(iavf_init_module); 5033 5034 /** 5035 * iavf_exit_module - Driver Exit Cleanup Routine 5036 * 5037 * iavf_exit_module is called just before the driver is removed 5038 * from memory. 5039 **/ 5040 static void __exit iavf_exit_module(void) 5041 { 5042 pci_unregister_driver(&iavf_driver); 5043 destroy_workqueue(iavf_wq); 5044 } 5045 5046 module_exit(iavf_exit_module); 5047 5048 /* iavf_main.c */ 5049