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; 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 if (running) { 3090 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3091 iavf_free_traffic_irqs(adapter); 3092 } 3093 iavf_disable_vf(adapter); 3094 3095 mutex_unlock(&adapter->client_lock); 3096 mutex_unlock(&adapter->crit_lock); 3097 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); 3098 } 3099 3100 /** 3101 * iavf_adminq_task - worker thread to clean the admin queue 3102 * @work: pointer to work_struct containing our data 3103 **/ 3104 static void iavf_adminq_task(struct work_struct *work) 3105 { 3106 struct iavf_adapter *adapter = 3107 container_of(work, struct iavf_adapter, adminq_task); 3108 struct iavf_hw *hw = &adapter->hw; 3109 struct iavf_arq_event_info event; 3110 enum virtchnl_ops v_op; 3111 enum iavf_status ret, v_ret; 3112 u32 val, oldval; 3113 u16 pending; 3114 3115 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 3116 goto out; 3117 3118 if (!mutex_trylock(&adapter->crit_lock)) { 3119 if (adapter->state == __IAVF_REMOVE) 3120 return; 3121 3122 queue_work(iavf_wq, &adapter->adminq_task); 3123 goto out; 3124 } 3125 3126 event.buf_len = IAVF_MAX_AQ_BUF_SIZE; 3127 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3128 if (!event.msg_buf) 3129 goto out; 3130 3131 do { 3132 ret = iavf_clean_arq_element(hw, &event, &pending); 3133 v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high); 3134 v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low); 3135 3136 if (ret || !v_op) 3137 break; /* No event to process or error cleaning ARQ */ 3138 3139 iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf, 3140 event.msg_len); 3141 if (pending != 0) 3142 memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE); 3143 } while (pending); 3144 mutex_unlock(&adapter->crit_lock); 3145 3146 if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES)) { 3147 if (adapter->netdev_registered || 3148 !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 3149 struct net_device *netdev = adapter->netdev; 3150 3151 rtnl_lock(); 3152 netdev_update_features(netdev); 3153 rtnl_unlock(); 3154 /* Request VLAN offload settings */ 3155 if (VLAN_V2_ALLOWED(adapter)) 3156 iavf_set_vlan_offload_features 3157 (adapter, 0, netdev->features); 3158 3159 iavf_set_queue_vlan_tag_loc(adapter); 3160 } 3161 3162 adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; 3163 } 3164 if ((adapter->flags & 3165 (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) || 3166 adapter->state == __IAVF_RESETTING) 3167 goto freedom; 3168 3169 /* check for error indications */ 3170 val = rd32(hw, hw->aq.arq.len); 3171 if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */ 3172 goto freedom; 3173 oldval = val; 3174 if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) { 3175 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); 3176 val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK; 3177 } 3178 if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) { 3179 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); 3180 val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK; 3181 } 3182 if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) { 3183 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); 3184 val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK; 3185 } 3186 if (oldval != val) 3187 wr32(hw, hw->aq.arq.len, val); 3188 3189 val = rd32(hw, hw->aq.asq.len); 3190 oldval = val; 3191 if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) { 3192 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); 3193 val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK; 3194 } 3195 if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) { 3196 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); 3197 val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK; 3198 } 3199 if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) { 3200 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); 3201 val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK; 3202 } 3203 if (oldval != val) 3204 wr32(hw, hw->aq.asq.len, val); 3205 3206 freedom: 3207 kfree(event.msg_buf); 3208 out: 3209 /* re-enable Admin queue interrupt cause */ 3210 iavf_misc_irq_enable(adapter); 3211 } 3212 3213 /** 3214 * iavf_client_task - worker thread to perform client work 3215 * @work: pointer to work_struct containing our data 3216 * 3217 * This task handles client interactions. Because client calls can be 3218 * reentrant, we can't handle them in the watchdog. 3219 **/ 3220 static void iavf_client_task(struct work_struct *work) 3221 { 3222 struct iavf_adapter *adapter = 3223 container_of(work, struct iavf_adapter, client_task.work); 3224 3225 /* If we can't get the client bit, just give up. We'll be rescheduled 3226 * later. 3227 */ 3228 3229 if (!mutex_trylock(&adapter->client_lock)) 3230 return; 3231 3232 if (adapter->flags & IAVF_FLAG_SERVICE_CLIENT_REQUESTED) { 3233 iavf_client_subtask(adapter); 3234 adapter->flags &= ~IAVF_FLAG_SERVICE_CLIENT_REQUESTED; 3235 goto out; 3236 } 3237 if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS) { 3238 iavf_notify_client_l2_params(&adapter->vsi); 3239 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_L2_PARAMS; 3240 goto out; 3241 } 3242 if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_CLOSE) { 3243 iavf_notify_client_close(&adapter->vsi, false); 3244 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_CLOSE; 3245 goto out; 3246 } 3247 if (adapter->flags & IAVF_FLAG_CLIENT_NEEDS_OPEN) { 3248 iavf_notify_client_open(&adapter->vsi); 3249 adapter->flags &= ~IAVF_FLAG_CLIENT_NEEDS_OPEN; 3250 } 3251 out: 3252 mutex_unlock(&adapter->client_lock); 3253 } 3254 3255 /** 3256 * iavf_free_all_tx_resources - Free Tx Resources for All Queues 3257 * @adapter: board private structure 3258 * 3259 * Free all transmit software resources 3260 **/ 3261 void iavf_free_all_tx_resources(struct iavf_adapter *adapter) 3262 { 3263 int i; 3264 3265 if (!adapter->tx_rings) 3266 return; 3267 3268 for (i = 0; i < adapter->num_active_queues; i++) 3269 if (adapter->tx_rings[i].desc) 3270 iavf_free_tx_resources(&adapter->tx_rings[i]); 3271 } 3272 3273 /** 3274 * iavf_setup_all_tx_resources - allocate all queues Tx resources 3275 * @adapter: board private structure 3276 * 3277 * If this function returns with an error, then it's possible one or 3278 * more of the rings is populated (while the rest are not). It is the 3279 * callers duty to clean those orphaned rings. 3280 * 3281 * Return 0 on success, negative on failure 3282 **/ 3283 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter) 3284 { 3285 int i, err = 0; 3286 3287 for (i = 0; i < adapter->num_active_queues; i++) { 3288 adapter->tx_rings[i].count = adapter->tx_desc_count; 3289 err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]); 3290 if (!err) 3291 continue; 3292 dev_err(&adapter->pdev->dev, 3293 "Allocation for Tx Queue %u failed\n", i); 3294 break; 3295 } 3296 3297 return err; 3298 } 3299 3300 /** 3301 * iavf_setup_all_rx_resources - allocate all queues Rx resources 3302 * @adapter: board private structure 3303 * 3304 * If this function returns with an error, then it's possible one or 3305 * more of the rings is populated (while the rest are not). It is the 3306 * callers duty to clean those orphaned rings. 3307 * 3308 * Return 0 on success, negative on failure 3309 **/ 3310 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter) 3311 { 3312 int i, err = 0; 3313 3314 for (i = 0; i < adapter->num_active_queues; i++) { 3315 adapter->rx_rings[i].count = adapter->rx_desc_count; 3316 err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]); 3317 if (!err) 3318 continue; 3319 dev_err(&adapter->pdev->dev, 3320 "Allocation for Rx Queue %u failed\n", i); 3321 break; 3322 } 3323 return err; 3324 } 3325 3326 /** 3327 * iavf_free_all_rx_resources - Free Rx Resources for All Queues 3328 * @adapter: board private structure 3329 * 3330 * Free all receive software resources 3331 **/ 3332 void iavf_free_all_rx_resources(struct iavf_adapter *adapter) 3333 { 3334 int i; 3335 3336 if (!adapter->rx_rings) 3337 return; 3338 3339 for (i = 0; i < adapter->num_active_queues; i++) 3340 if (adapter->rx_rings[i].desc) 3341 iavf_free_rx_resources(&adapter->rx_rings[i]); 3342 } 3343 3344 /** 3345 * iavf_validate_tx_bandwidth - validate the max Tx bandwidth 3346 * @adapter: board private structure 3347 * @max_tx_rate: max Tx bw for a tc 3348 **/ 3349 static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter, 3350 u64 max_tx_rate) 3351 { 3352 int speed = 0, ret = 0; 3353 3354 if (ADV_LINK_SUPPORT(adapter)) { 3355 if (adapter->link_speed_mbps < U32_MAX) { 3356 speed = adapter->link_speed_mbps; 3357 goto validate_bw; 3358 } else { 3359 dev_err(&adapter->pdev->dev, "Unknown link speed\n"); 3360 return -EINVAL; 3361 } 3362 } 3363 3364 switch (adapter->link_speed) { 3365 case VIRTCHNL_LINK_SPEED_40GB: 3366 speed = SPEED_40000; 3367 break; 3368 case VIRTCHNL_LINK_SPEED_25GB: 3369 speed = SPEED_25000; 3370 break; 3371 case VIRTCHNL_LINK_SPEED_20GB: 3372 speed = SPEED_20000; 3373 break; 3374 case VIRTCHNL_LINK_SPEED_10GB: 3375 speed = SPEED_10000; 3376 break; 3377 case VIRTCHNL_LINK_SPEED_5GB: 3378 speed = SPEED_5000; 3379 break; 3380 case VIRTCHNL_LINK_SPEED_2_5GB: 3381 speed = SPEED_2500; 3382 break; 3383 case VIRTCHNL_LINK_SPEED_1GB: 3384 speed = SPEED_1000; 3385 break; 3386 case VIRTCHNL_LINK_SPEED_100MB: 3387 speed = SPEED_100; 3388 break; 3389 default: 3390 break; 3391 } 3392 3393 validate_bw: 3394 if (max_tx_rate > speed) { 3395 dev_err(&adapter->pdev->dev, 3396 "Invalid tx rate specified\n"); 3397 ret = -EINVAL; 3398 } 3399 3400 return ret; 3401 } 3402 3403 /** 3404 * iavf_validate_ch_config - validate queue mapping info 3405 * @adapter: board private structure 3406 * @mqprio_qopt: queue parameters 3407 * 3408 * This function validates if the config provided by the user to 3409 * configure queue channels is valid or not. Returns 0 on a valid 3410 * config. 3411 **/ 3412 static int iavf_validate_ch_config(struct iavf_adapter *adapter, 3413 struct tc_mqprio_qopt_offload *mqprio_qopt) 3414 { 3415 u64 total_max_rate = 0; 3416 u32 tx_rate_rem = 0; 3417 int i, num_qps = 0; 3418 u64 tx_rate = 0; 3419 int ret = 0; 3420 3421 if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS || 3422 mqprio_qopt->qopt.num_tc < 1) 3423 return -EINVAL; 3424 3425 for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) { 3426 if (!mqprio_qopt->qopt.count[i] || 3427 mqprio_qopt->qopt.offset[i] != num_qps) 3428 return -EINVAL; 3429 if (mqprio_qopt->min_rate[i]) { 3430 dev_err(&adapter->pdev->dev, 3431 "Invalid min tx rate (greater than 0) specified for TC%d\n", 3432 i); 3433 return -EINVAL; 3434 } 3435 3436 /* convert to Mbps */ 3437 tx_rate = div_u64(mqprio_qopt->max_rate[i], 3438 IAVF_MBPS_DIVISOR); 3439 3440 if (mqprio_qopt->max_rate[i] && 3441 tx_rate < IAVF_MBPS_QUANTA) { 3442 dev_err(&adapter->pdev->dev, 3443 "Invalid max tx rate for TC%d, minimum %dMbps\n", 3444 i, IAVF_MBPS_QUANTA); 3445 return -EINVAL; 3446 } 3447 3448 (void)div_u64_rem(tx_rate, IAVF_MBPS_QUANTA, &tx_rate_rem); 3449 3450 if (tx_rate_rem != 0) { 3451 dev_err(&adapter->pdev->dev, 3452 "Invalid max tx rate for TC%d, not divisible by %d\n", 3453 i, IAVF_MBPS_QUANTA); 3454 return -EINVAL; 3455 } 3456 3457 total_max_rate += tx_rate; 3458 num_qps += mqprio_qopt->qopt.count[i]; 3459 } 3460 if (num_qps > adapter->num_active_queues) { 3461 dev_err(&adapter->pdev->dev, 3462 "Cannot support requested number of queues\n"); 3463 return -EINVAL; 3464 } 3465 3466 ret = iavf_validate_tx_bandwidth(adapter, total_max_rate); 3467 return ret; 3468 } 3469 3470 /** 3471 * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes 3472 * @adapter: board private structure 3473 **/ 3474 static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter) 3475 { 3476 struct iavf_cloud_filter *cf, *cftmp; 3477 3478 spin_lock_bh(&adapter->cloud_filter_list_lock); 3479 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 3480 list) { 3481 list_del(&cf->list); 3482 kfree(cf); 3483 adapter->num_cloud_filters--; 3484 } 3485 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3486 } 3487 3488 /** 3489 * __iavf_setup_tc - configure multiple traffic classes 3490 * @netdev: network interface device structure 3491 * @type_data: tc offload data 3492 * 3493 * This function processes the config information provided by the 3494 * user to configure traffic classes/queue channels and packages the 3495 * information to request the PF to setup traffic classes. 3496 * 3497 * Returns 0 on success. 3498 **/ 3499 static int __iavf_setup_tc(struct net_device *netdev, void *type_data) 3500 { 3501 struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; 3502 struct iavf_adapter *adapter = netdev_priv(netdev); 3503 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3504 u8 num_tc = 0, total_qps = 0; 3505 int ret = 0, netdev_tc = 0; 3506 u64 max_tx_rate; 3507 u16 mode; 3508 int i; 3509 3510 num_tc = mqprio_qopt->qopt.num_tc; 3511 mode = mqprio_qopt->mode; 3512 3513 /* delete queue_channel */ 3514 if (!mqprio_qopt->qopt.hw) { 3515 if (adapter->ch_config.state == __IAVF_TC_RUNNING) { 3516 /* reset the tc configuration */ 3517 netdev_reset_tc(netdev); 3518 adapter->num_tc = 0; 3519 netif_tx_stop_all_queues(netdev); 3520 netif_tx_disable(netdev); 3521 iavf_del_all_cloud_filters(adapter); 3522 adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS; 3523 total_qps = adapter->orig_num_active_queues; 3524 goto exit; 3525 } else { 3526 return -EINVAL; 3527 } 3528 } 3529 3530 /* add queue channel */ 3531 if (mode == TC_MQPRIO_MODE_CHANNEL) { 3532 if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) { 3533 dev_err(&adapter->pdev->dev, "ADq not supported\n"); 3534 return -EOPNOTSUPP; 3535 } 3536 if (adapter->ch_config.state != __IAVF_TC_INVALID) { 3537 dev_err(&adapter->pdev->dev, "TC configuration already exists\n"); 3538 return -EINVAL; 3539 } 3540 3541 ret = iavf_validate_ch_config(adapter, mqprio_qopt); 3542 if (ret) 3543 return ret; 3544 /* Return if same TC config is requested */ 3545 if (adapter->num_tc == num_tc) 3546 return 0; 3547 adapter->num_tc = num_tc; 3548 3549 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3550 if (i < num_tc) { 3551 adapter->ch_config.ch_info[i].count = 3552 mqprio_qopt->qopt.count[i]; 3553 adapter->ch_config.ch_info[i].offset = 3554 mqprio_qopt->qopt.offset[i]; 3555 total_qps += mqprio_qopt->qopt.count[i]; 3556 max_tx_rate = mqprio_qopt->max_rate[i]; 3557 /* convert to Mbps */ 3558 max_tx_rate = div_u64(max_tx_rate, 3559 IAVF_MBPS_DIVISOR); 3560 adapter->ch_config.ch_info[i].max_tx_rate = 3561 max_tx_rate; 3562 } else { 3563 adapter->ch_config.ch_info[i].count = 1; 3564 adapter->ch_config.ch_info[i].offset = 0; 3565 } 3566 } 3567 3568 /* Take snapshot of original config such as "num_active_queues" 3569 * It is used later when delete ADQ flow is exercised, so that 3570 * once delete ADQ flow completes, VF shall go back to its 3571 * original queue configuration 3572 */ 3573 3574 adapter->orig_num_active_queues = adapter->num_active_queues; 3575 3576 /* Store queue info based on TC so that VF gets configured 3577 * with correct number of queues when VF completes ADQ config 3578 * flow 3579 */ 3580 adapter->ch_config.total_qps = total_qps; 3581 3582 netif_tx_stop_all_queues(netdev); 3583 netif_tx_disable(netdev); 3584 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS; 3585 netdev_reset_tc(netdev); 3586 /* Report the tc mapping up the stack */ 3587 netdev_set_num_tc(adapter->netdev, num_tc); 3588 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3589 u16 qcount = mqprio_qopt->qopt.count[i]; 3590 u16 qoffset = mqprio_qopt->qopt.offset[i]; 3591 3592 if (i < num_tc) 3593 netdev_set_tc_queue(netdev, netdev_tc++, qcount, 3594 qoffset); 3595 } 3596 } 3597 exit: 3598 if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 3599 return 0; 3600 3601 netif_set_real_num_rx_queues(netdev, total_qps); 3602 netif_set_real_num_tx_queues(netdev, total_qps); 3603 3604 return ret; 3605 } 3606 3607 /** 3608 * iavf_parse_cls_flower - Parse tc flower filters provided by kernel 3609 * @adapter: board private structure 3610 * @f: pointer to struct flow_cls_offload 3611 * @filter: pointer to cloud filter structure 3612 */ 3613 static int iavf_parse_cls_flower(struct iavf_adapter *adapter, 3614 struct flow_cls_offload *f, 3615 struct iavf_cloud_filter *filter) 3616 { 3617 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 3618 struct flow_dissector *dissector = rule->match.dissector; 3619 u16 n_proto_mask = 0; 3620 u16 n_proto_key = 0; 3621 u8 field_flags = 0; 3622 u16 addr_type = 0; 3623 u16 n_proto = 0; 3624 int i = 0; 3625 struct virtchnl_filter *vf = &filter->f; 3626 3627 if (dissector->used_keys & 3628 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | 3629 BIT(FLOW_DISSECTOR_KEY_BASIC) | 3630 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 3631 BIT(FLOW_DISSECTOR_KEY_VLAN) | 3632 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 3633 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 3634 BIT(FLOW_DISSECTOR_KEY_PORTS) | 3635 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) { 3636 dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%x\n", 3637 dissector->used_keys); 3638 return -EOPNOTSUPP; 3639 } 3640 3641 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 3642 struct flow_match_enc_keyid match; 3643 3644 flow_rule_match_enc_keyid(rule, &match); 3645 if (match.mask->keyid != 0) 3646 field_flags |= IAVF_CLOUD_FIELD_TEN_ID; 3647 } 3648 3649 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 3650 struct flow_match_basic match; 3651 3652 flow_rule_match_basic(rule, &match); 3653 n_proto_key = ntohs(match.key->n_proto); 3654 n_proto_mask = ntohs(match.mask->n_proto); 3655 3656 if (n_proto_key == ETH_P_ALL) { 3657 n_proto_key = 0; 3658 n_proto_mask = 0; 3659 } 3660 n_proto = n_proto_key & n_proto_mask; 3661 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) 3662 return -EINVAL; 3663 if (n_proto == ETH_P_IPV6) { 3664 /* specify flow type as TCP IPv6 */ 3665 vf->flow_type = VIRTCHNL_TCP_V6_FLOW; 3666 } 3667 3668 if (match.key->ip_proto != IPPROTO_TCP) { 3669 dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n"); 3670 return -EINVAL; 3671 } 3672 } 3673 3674 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 3675 struct flow_match_eth_addrs match; 3676 3677 flow_rule_match_eth_addrs(rule, &match); 3678 3679 /* use is_broadcast and is_zero to check for all 0xf or 0 */ 3680 if (!is_zero_ether_addr(match.mask->dst)) { 3681 if (is_broadcast_ether_addr(match.mask->dst)) { 3682 field_flags |= IAVF_CLOUD_FIELD_OMAC; 3683 } else { 3684 dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n", 3685 match.mask->dst); 3686 return -EINVAL; 3687 } 3688 } 3689 3690 if (!is_zero_ether_addr(match.mask->src)) { 3691 if (is_broadcast_ether_addr(match.mask->src)) { 3692 field_flags |= IAVF_CLOUD_FIELD_IMAC; 3693 } else { 3694 dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n", 3695 match.mask->src); 3696 return -EINVAL; 3697 } 3698 } 3699 3700 if (!is_zero_ether_addr(match.key->dst)) 3701 if (is_valid_ether_addr(match.key->dst) || 3702 is_multicast_ether_addr(match.key->dst)) { 3703 /* set the mask if a valid dst_mac address */ 3704 for (i = 0; i < ETH_ALEN; i++) 3705 vf->mask.tcp_spec.dst_mac[i] |= 0xff; 3706 ether_addr_copy(vf->data.tcp_spec.dst_mac, 3707 match.key->dst); 3708 } 3709 3710 if (!is_zero_ether_addr(match.key->src)) 3711 if (is_valid_ether_addr(match.key->src) || 3712 is_multicast_ether_addr(match.key->src)) { 3713 /* set the mask if a valid dst_mac address */ 3714 for (i = 0; i < ETH_ALEN; i++) 3715 vf->mask.tcp_spec.src_mac[i] |= 0xff; 3716 ether_addr_copy(vf->data.tcp_spec.src_mac, 3717 match.key->src); 3718 } 3719 } 3720 3721 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 3722 struct flow_match_vlan match; 3723 3724 flow_rule_match_vlan(rule, &match); 3725 if (match.mask->vlan_id) { 3726 if (match.mask->vlan_id == VLAN_VID_MASK) { 3727 field_flags |= IAVF_CLOUD_FIELD_IVLAN; 3728 } else { 3729 dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n", 3730 match.mask->vlan_id); 3731 return -EINVAL; 3732 } 3733 } 3734 vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff); 3735 vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id); 3736 } 3737 3738 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 3739 struct flow_match_control match; 3740 3741 flow_rule_match_control(rule, &match); 3742 addr_type = match.key->addr_type; 3743 } 3744 3745 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 3746 struct flow_match_ipv4_addrs match; 3747 3748 flow_rule_match_ipv4_addrs(rule, &match); 3749 if (match.mask->dst) { 3750 if (match.mask->dst == cpu_to_be32(0xffffffff)) { 3751 field_flags |= IAVF_CLOUD_FIELD_IIP; 3752 } else { 3753 dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n", 3754 be32_to_cpu(match.mask->dst)); 3755 return -EINVAL; 3756 } 3757 } 3758 3759 if (match.mask->src) { 3760 if (match.mask->src == cpu_to_be32(0xffffffff)) { 3761 field_flags |= IAVF_CLOUD_FIELD_IIP; 3762 } else { 3763 dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n", 3764 be32_to_cpu(match.mask->dst)); 3765 return -EINVAL; 3766 } 3767 } 3768 3769 if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) { 3770 dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n"); 3771 return -EINVAL; 3772 } 3773 if (match.key->dst) { 3774 vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff); 3775 vf->data.tcp_spec.dst_ip[0] = match.key->dst; 3776 } 3777 if (match.key->src) { 3778 vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff); 3779 vf->data.tcp_spec.src_ip[0] = match.key->src; 3780 } 3781 } 3782 3783 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 3784 struct flow_match_ipv6_addrs match; 3785 3786 flow_rule_match_ipv6_addrs(rule, &match); 3787 3788 /* validate mask, make sure it is not IPV6_ADDR_ANY */ 3789 if (ipv6_addr_any(&match.mask->dst)) { 3790 dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n", 3791 IPV6_ADDR_ANY); 3792 return -EINVAL; 3793 } 3794 3795 /* src and dest IPv6 address should not be LOOPBACK 3796 * (0:0:0:0:0:0:0:1) which can be represented as ::1 3797 */ 3798 if (ipv6_addr_loopback(&match.key->dst) || 3799 ipv6_addr_loopback(&match.key->src)) { 3800 dev_err(&adapter->pdev->dev, 3801 "ipv6 addr should not be loopback\n"); 3802 return -EINVAL; 3803 } 3804 if (!ipv6_addr_any(&match.mask->dst) || 3805 !ipv6_addr_any(&match.mask->src)) 3806 field_flags |= IAVF_CLOUD_FIELD_IIP; 3807 3808 for (i = 0; i < 4; i++) 3809 vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff); 3810 memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32, 3811 sizeof(vf->data.tcp_spec.dst_ip)); 3812 for (i = 0; i < 4; i++) 3813 vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff); 3814 memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32, 3815 sizeof(vf->data.tcp_spec.src_ip)); 3816 } 3817 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 3818 struct flow_match_ports match; 3819 3820 flow_rule_match_ports(rule, &match); 3821 if (match.mask->src) { 3822 if (match.mask->src == cpu_to_be16(0xffff)) { 3823 field_flags |= IAVF_CLOUD_FIELD_IIP; 3824 } else { 3825 dev_err(&adapter->pdev->dev, "Bad src port mask %u\n", 3826 be16_to_cpu(match.mask->src)); 3827 return -EINVAL; 3828 } 3829 } 3830 3831 if (match.mask->dst) { 3832 if (match.mask->dst == cpu_to_be16(0xffff)) { 3833 field_flags |= IAVF_CLOUD_FIELD_IIP; 3834 } else { 3835 dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n", 3836 be16_to_cpu(match.mask->dst)); 3837 return -EINVAL; 3838 } 3839 } 3840 if (match.key->dst) { 3841 vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff); 3842 vf->data.tcp_spec.dst_port = match.key->dst; 3843 } 3844 3845 if (match.key->src) { 3846 vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff); 3847 vf->data.tcp_spec.src_port = match.key->src; 3848 } 3849 } 3850 vf->field_flags = field_flags; 3851 3852 return 0; 3853 } 3854 3855 /** 3856 * iavf_handle_tclass - Forward to a traffic class on the device 3857 * @adapter: board private structure 3858 * @tc: traffic class index on the device 3859 * @filter: pointer to cloud filter structure 3860 */ 3861 static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc, 3862 struct iavf_cloud_filter *filter) 3863 { 3864 if (tc == 0) 3865 return 0; 3866 if (tc < adapter->num_tc) { 3867 if (!filter->f.data.tcp_spec.dst_port) { 3868 dev_err(&adapter->pdev->dev, 3869 "Specify destination port to redirect to traffic class other than TC0\n"); 3870 return -EINVAL; 3871 } 3872 } 3873 /* redirect to a traffic class on the same device */ 3874 filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT; 3875 filter->f.action_meta = tc; 3876 return 0; 3877 } 3878 3879 /** 3880 * iavf_find_cf - Find the cloud filter in the list 3881 * @adapter: Board private structure 3882 * @cookie: filter specific cookie 3883 * 3884 * Returns ptr to the filter object or NULL. Must be called while holding the 3885 * cloud_filter_list_lock. 3886 */ 3887 static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter, 3888 unsigned long *cookie) 3889 { 3890 struct iavf_cloud_filter *filter = NULL; 3891 3892 if (!cookie) 3893 return NULL; 3894 3895 list_for_each_entry(filter, &adapter->cloud_filter_list, list) { 3896 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie))) 3897 return filter; 3898 } 3899 return NULL; 3900 } 3901 3902 /** 3903 * iavf_configure_clsflower - Add tc flower filters 3904 * @adapter: board private structure 3905 * @cls_flower: Pointer to struct flow_cls_offload 3906 */ 3907 static int iavf_configure_clsflower(struct iavf_adapter *adapter, 3908 struct flow_cls_offload *cls_flower) 3909 { 3910 int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid); 3911 struct iavf_cloud_filter *filter = NULL; 3912 int err = -EINVAL, count = 50; 3913 3914 if (tc < 0) { 3915 dev_err(&adapter->pdev->dev, "Invalid traffic class\n"); 3916 return -EINVAL; 3917 } 3918 3919 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 3920 if (!filter) 3921 return -ENOMEM; 3922 3923 while (!mutex_trylock(&adapter->crit_lock)) { 3924 if (--count == 0) { 3925 kfree(filter); 3926 return err; 3927 } 3928 udelay(1); 3929 } 3930 3931 filter->cookie = cls_flower->cookie; 3932 3933 /* bail out here if filter already exists */ 3934 spin_lock_bh(&adapter->cloud_filter_list_lock); 3935 if (iavf_find_cf(adapter, &cls_flower->cookie)) { 3936 dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n"); 3937 err = -EEXIST; 3938 goto spin_unlock; 3939 } 3940 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3941 3942 /* set the mask to all zeroes to begin with */ 3943 memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec)); 3944 /* start out with flow type and eth type IPv4 to begin with */ 3945 filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW; 3946 err = iavf_parse_cls_flower(adapter, cls_flower, filter); 3947 if (err) 3948 goto err; 3949 3950 err = iavf_handle_tclass(adapter, tc, filter); 3951 if (err) 3952 goto err; 3953 3954 /* add filter to the list */ 3955 spin_lock_bh(&adapter->cloud_filter_list_lock); 3956 list_add_tail(&filter->list, &adapter->cloud_filter_list); 3957 adapter->num_cloud_filters++; 3958 filter->add = true; 3959 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 3960 spin_unlock: 3961 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3962 err: 3963 if (err) 3964 kfree(filter); 3965 3966 mutex_unlock(&adapter->crit_lock); 3967 return err; 3968 } 3969 3970 /** 3971 * iavf_delete_clsflower - Remove tc flower filters 3972 * @adapter: board private structure 3973 * @cls_flower: Pointer to struct flow_cls_offload 3974 */ 3975 static int iavf_delete_clsflower(struct iavf_adapter *adapter, 3976 struct flow_cls_offload *cls_flower) 3977 { 3978 struct iavf_cloud_filter *filter = NULL; 3979 int err = 0; 3980 3981 spin_lock_bh(&adapter->cloud_filter_list_lock); 3982 filter = iavf_find_cf(adapter, &cls_flower->cookie); 3983 if (filter) { 3984 filter->del = true; 3985 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 3986 } else { 3987 err = -EINVAL; 3988 } 3989 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3990 3991 return err; 3992 } 3993 3994 /** 3995 * iavf_setup_tc_cls_flower - flower classifier offloads 3996 * @adapter: board private structure 3997 * @cls_flower: pointer to flow_cls_offload struct with flow info 3998 */ 3999 static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter, 4000 struct flow_cls_offload *cls_flower) 4001 { 4002 switch (cls_flower->command) { 4003 case FLOW_CLS_REPLACE: 4004 return iavf_configure_clsflower(adapter, cls_flower); 4005 case FLOW_CLS_DESTROY: 4006 return iavf_delete_clsflower(adapter, cls_flower); 4007 case FLOW_CLS_STATS: 4008 return -EOPNOTSUPP; 4009 default: 4010 return -EOPNOTSUPP; 4011 } 4012 } 4013 4014 /** 4015 * iavf_setup_tc_block_cb - block callback for tc 4016 * @type: type of offload 4017 * @type_data: offload data 4018 * @cb_priv: 4019 * 4020 * This function is the block callback for traffic classes 4021 **/ 4022 static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 4023 void *cb_priv) 4024 { 4025 struct iavf_adapter *adapter = cb_priv; 4026 4027 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 4028 return -EOPNOTSUPP; 4029 4030 switch (type) { 4031 case TC_SETUP_CLSFLOWER: 4032 return iavf_setup_tc_cls_flower(cb_priv, type_data); 4033 default: 4034 return -EOPNOTSUPP; 4035 } 4036 } 4037 4038 static LIST_HEAD(iavf_block_cb_list); 4039 4040 /** 4041 * iavf_setup_tc - configure multiple traffic classes 4042 * @netdev: network interface device structure 4043 * @type: type of offload 4044 * @type_data: tc offload data 4045 * 4046 * This function is the callback to ndo_setup_tc in the 4047 * netdev_ops. 4048 * 4049 * Returns 0 on success 4050 **/ 4051 static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, 4052 void *type_data) 4053 { 4054 struct iavf_adapter *adapter = netdev_priv(netdev); 4055 4056 switch (type) { 4057 case TC_SETUP_QDISC_MQPRIO: 4058 return __iavf_setup_tc(netdev, type_data); 4059 case TC_SETUP_BLOCK: 4060 return flow_block_cb_setup_simple(type_data, 4061 &iavf_block_cb_list, 4062 iavf_setup_tc_block_cb, 4063 adapter, adapter, true); 4064 default: 4065 return -EOPNOTSUPP; 4066 } 4067 } 4068 4069 /** 4070 * iavf_open - Called when a network interface is made active 4071 * @netdev: network interface device structure 4072 * 4073 * Returns 0 on success, negative value on failure 4074 * 4075 * The open entry point is called when a network interface is made 4076 * active by the system (IFF_UP). At this point all resources needed 4077 * for transmit and receive operations are allocated, the interrupt 4078 * handler is registered with the OS, the watchdog is started, 4079 * and the stack is notified that the interface is ready. 4080 **/ 4081 static int iavf_open(struct net_device *netdev) 4082 { 4083 struct iavf_adapter *adapter = netdev_priv(netdev); 4084 int err; 4085 4086 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) { 4087 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); 4088 return -EIO; 4089 } 4090 4091 while (!mutex_trylock(&adapter->crit_lock)) { 4092 /* If we are in __IAVF_INIT_CONFIG_ADAPTER state the crit_lock 4093 * is already taken and iavf_open is called from an upper 4094 * device's notifier reacting on NETDEV_REGISTER event. 4095 * We have to leave here to avoid dead lock. 4096 */ 4097 if (adapter->state == __IAVF_INIT_CONFIG_ADAPTER) 4098 return -EBUSY; 4099 4100 usleep_range(500, 1000); 4101 } 4102 4103 if (adapter->state != __IAVF_DOWN) { 4104 err = -EBUSY; 4105 goto err_unlock; 4106 } 4107 4108 if (adapter->state == __IAVF_RUNNING && 4109 !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) { 4110 dev_dbg(&adapter->pdev->dev, "VF is already open.\n"); 4111 err = 0; 4112 goto err_unlock; 4113 } 4114 4115 /* allocate transmit descriptors */ 4116 err = iavf_setup_all_tx_resources(adapter); 4117 if (err) 4118 goto err_setup_tx; 4119 4120 /* allocate receive descriptors */ 4121 err = iavf_setup_all_rx_resources(adapter); 4122 if (err) 4123 goto err_setup_rx; 4124 4125 /* clear any pending interrupts, may auto mask */ 4126 err = iavf_request_traffic_irqs(adapter, netdev->name); 4127 if (err) 4128 goto err_req_irq; 4129 4130 spin_lock_bh(&adapter->mac_vlan_list_lock); 4131 4132 iavf_add_filter(adapter, adapter->hw.mac.addr); 4133 4134 spin_unlock_bh(&adapter->mac_vlan_list_lock); 4135 4136 /* Restore VLAN filters that were removed with IFF_DOWN */ 4137 iavf_restore_filters(adapter); 4138 4139 iavf_configure(adapter); 4140 4141 iavf_up_complete(adapter); 4142 4143 iavf_irq_enable(adapter, true); 4144 4145 mutex_unlock(&adapter->crit_lock); 4146 4147 return 0; 4148 4149 err_req_irq: 4150 iavf_down(adapter); 4151 iavf_free_traffic_irqs(adapter); 4152 err_setup_rx: 4153 iavf_free_all_rx_resources(adapter); 4154 err_setup_tx: 4155 iavf_free_all_tx_resources(adapter); 4156 err_unlock: 4157 mutex_unlock(&adapter->crit_lock); 4158 4159 return err; 4160 } 4161 4162 /** 4163 * iavf_close - Disables a network interface 4164 * @netdev: network interface device structure 4165 * 4166 * Returns 0, this is not allowed to fail 4167 * 4168 * The close entry point is called when an interface is de-activated 4169 * by the OS. The hardware is still under the drivers control, but 4170 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) 4171 * are freed, along with all transmit and receive resources. 4172 **/ 4173 static int iavf_close(struct net_device *netdev) 4174 { 4175 struct iavf_adapter *adapter = netdev_priv(netdev); 4176 int status; 4177 4178 mutex_lock(&adapter->crit_lock); 4179 4180 if (adapter->state <= __IAVF_DOWN_PENDING) { 4181 mutex_unlock(&adapter->crit_lock); 4182 return 0; 4183 } 4184 4185 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 4186 if (CLIENT_ENABLED(adapter)) 4187 adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_CLOSE; 4188 4189 iavf_down(adapter); 4190 iavf_change_state(adapter, __IAVF_DOWN_PENDING); 4191 iavf_free_traffic_irqs(adapter); 4192 4193 mutex_unlock(&adapter->crit_lock); 4194 4195 /* We explicitly don't free resources here because the hardware is 4196 * still active and can DMA into memory. Resources are cleared in 4197 * iavf_virtchnl_completion() after we get confirmation from the PF 4198 * driver that the rings have been stopped. 4199 * 4200 * Also, we wait for state to transition to __IAVF_DOWN before 4201 * returning. State change occurs in iavf_virtchnl_completion() after 4202 * VF resources are released (which occurs after PF driver processes and 4203 * responds to admin queue commands). 4204 */ 4205 4206 status = wait_event_timeout(adapter->down_waitqueue, 4207 adapter->state == __IAVF_DOWN, 4208 msecs_to_jiffies(500)); 4209 if (!status) 4210 netdev_warn(netdev, "Device resources not yet released\n"); 4211 return 0; 4212 } 4213 4214 /** 4215 * iavf_change_mtu - Change the Maximum Transfer Unit 4216 * @netdev: network interface device structure 4217 * @new_mtu: new value for maximum frame size 4218 * 4219 * Returns 0 on success, negative on failure 4220 **/ 4221 static int iavf_change_mtu(struct net_device *netdev, int new_mtu) 4222 { 4223 struct iavf_adapter *adapter = netdev_priv(netdev); 4224 4225 netdev_dbg(netdev, "changing MTU from %d to %d\n", 4226 netdev->mtu, new_mtu); 4227 netdev->mtu = new_mtu; 4228 if (CLIENT_ENABLED(adapter)) { 4229 iavf_notify_client_l2_params(&adapter->vsi); 4230 adapter->flags |= IAVF_FLAG_SERVICE_CLIENT_REQUESTED; 4231 } 4232 4233 if (netif_running(netdev)) { 4234 adapter->flags |= IAVF_FLAG_RESET_NEEDED; 4235 queue_work(iavf_wq, &adapter->reset_task); 4236 } 4237 4238 return 0; 4239 } 4240 4241 #define NETIF_VLAN_OFFLOAD_FEATURES (NETIF_F_HW_VLAN_CTAG_RX | \ 4242 NETIF_F_HW_VLAN_CTAG_TX | \ 4243 NETIF_F_HW_VLAN_STAG_RX | \ 4244 NETIF_F_HW_VLAN_STAG_TX) 4245 4246 /** 4247 * iavf_set_features - set the netdev feature flags 4248 * @netdev: ptr to the netdev being adjusted 4249 * @features: the feature set that the stack is suggesting 4250 * Note: expects to be called while under rtnl_lock() 4251 **/ 4252 static int iavf_set_features(struct net_device *netdev, 4253 netdev_features_t features) 4254 { 4255 struct iavf_adapter *adapter = netdev_priv(netdev); 4256 4257 /* trigger update on any VLAN feature change */ 4258 if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^ 4259 (features & NETIF_VLAN_OFFLOAD_FEATURES)) 4260 iavf_set_vlan_offload_features(adapter, netdev->features, 4261 features); 4262 4263 return 0; 4264 } 4265 4266 /** 4267 * iavf_features_check - Validate encapsulated packet conforms to limits 4268 * @skb: skb buff 4269 * @dev: This physical port's netdev 4270 * @features: Offload features that the stack believes apply 4271 **/ 4272 static netdev_features_t iavf_features_check(struct sk_buff *skb, 4273 struct net_device *dev, 4274 netdev_features_t features) 4275 { 4276 size_t len; 4277 4278 /* No point in doing any of this if neither checksum nor GSO are 4279 * being requested for this frame. We can rule out both by just 4280 * checking for CHECKSUM_PARTIAL 4281 */ 4282 if (skb->ip_summed != CHECKSUM_PARTIAL) 4283 return features; 4284 4285 /* We cannot support GSO if the MSS is going to be less than 4286 * 64 bytes. If it is then we need to drop support for GSO. 4287 */ 4288 if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64)) 4289 features &= ~NETIF_F_GSO_MASK; 4290 4291 /* MACLEN can support at most 63 words */ 4292 len = skb_network_header(skb) - skb->data; 4293 if (len & ~(63 * 2)) 4294 goto out_err; 4295 4296 /* IPLEN and EIPLEN can support at most 127 dwords */ 4297 len = skb_transport_header(skb) - skb_network_header(skb); 4298 if (len & ~(127 * 4)) 4299 goto out_err; 4300 4301 if (skb->encapsulation) { 4302 /* L4TUNLEN can support 127 words */ 4303 len = skb_inner_network_header(skb) - skb_transport_header(skb); 4304 if (len & ~(127 * 2)) 4305 goto out_err; 4306 4307 /* IPLEN can support at most 127 dwords */ 4308 len = skb_inner_transport_header(skb) - 4309 skb_inner_network_header(skb); 4310 if (len & ~(127 * 4)) 4311 goto out_err; 4312 } 4313 4314 /* No need to validate L4LEN as TCP is the only protocol with a 4315 * flexible value and we support all possible values supported 4316 * by TCP, which is at most 15 dwords 4317 */ 4318 4319 return features; 4320 out_err: 4321 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 4322 } 4323 4324 /** 4325 * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off 4326 * @adapter: board private structure 4327 * 4328 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4329 * were negotiated determine the VLAN features that can be toggled on and off. 4330 **/ 4331 static netdev_features_t 4332 iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter) 4333 { 4334 netdev_features_t hw_features = 0; 4335 4336 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4337 return hw_features; 4338 4339 /* Enable VLAN features if supported */ 4340 if (VLAN_ALLOWED(adapter)) { 4341 hw_features |= (NETIF_F_HW_VLAN_CTAG_TX | 4342 NETIF_F_HW_VLAN_CTAG_RX); 4343 } else if (VLAN_V2_ALLOWED(adapter)) { 4344 struct virtchnl_vlan_caps *vlan_v2_caps = 4345 &adapter->vlan_v2_caps; 4346 struct virtchnl_vlan_supported_caps *stripping_support = 4347 &vlan_v2_caps->offloads.stripping_support; 4348 struct virtchnl_vlan_supported_caps *insertion_support = 4349 &vlan_v2_caps->offloads.insertion_support; 4350 4351 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4352 stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4353 if (stripping_support->outer & 4354 VIRTCHNL_VLAN_ETHERTYPE_8100) 4355 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4356 if (stripping_support->outer & 4357 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4358 hw_features |= NETIF_F_HW_VLAN_STAG_RX; 4359 } else if (stripping_support->inner != 4360 VIRTCHNL_VLAN_UNSUPPORTED && 4361 stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4362 if (stripping_support->inner & 4363 VIRTCHNL_VLAN_ETHERTYPE_8100) 4364 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4365 } 4366 4367 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4368 insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4369 if (insertion_support->outer & 4370 VIRTCHNL_VLAN_ETHERTYPE_8100) 4371 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4372 if (insertion_support->outer & 4373 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4374 hw_features |= NETIF_F_HW_VLAN_STAG_TX; 4375 } else if (insertion_support->inner && 4376 insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4377 if (insertion_support->inner & 4378 VIRTCHNL_VLAN_ETHERTYPE_8100) 4379 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4380 } 4381 } 4382 4383 return hw_features; 4384 } 4385 4386 /** 4387 * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures 4388 * @adapter: board private structure 4389 * 4390 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4391 * were negotiated determine the VLAN features that are enabled by default. 4392 **/ 4393 static netdev_features_t 4394 iavf_get_netdev_vlan_features(struct iavf_adapter *adapter) 4395 { 4396 netdev_features_t features = 0; 4397 4398 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4399 return features; 4400 4401 if (VLAN_ALLOWED(adapter)) { 4402 features |= NETIF_F_HW_VLAN_CTAG_FILTER | 4403 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX; 4404 } else if (VLAN_V2_ALLOWED(adapter)) { 4405 struct virtchnl_vlan_caps *vlan_v2_caps = 4406 &adapter->vlan_v2_caps; 4407 struct virtchnl_vlan_supported_caps *filtering_support = 4408 &vlan_v2_caps->filtering.filtering_support; 4409 struct virtchnl_vlan_supported_caps *stripping_support = 4410 &vlan_v2_caps->offloads.stripping_support; 4411 struct virtchnl_vlan_supported_caps *insertion_support = 4412 &vlan_v2_caps->offloads.insertion_support; 4413 u32 ethertype_init; 4414 4415 /* give priority to outer stripping and don't support both outer 4416 * and inner stripping 4417 */ 4418 ethertype_init = vlan_v2_caps->offloads.ethertype_init; 4419 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4420 if (stripping_support->outer & 4421 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4422 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4423 features |= NETIF_F_HW_VLAN_CTAG_RX; 4424 else if (stripping_support->outer & 4425 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4426 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4427 features |= NETIF_F_HW_VLAN_STAG_RX; 4428 } else if (stripping_support->inner != 4429 VIRTCHNL_VLAN_UNSUPPORTED) { 4430 if (stripping_support->inner & 4431 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4432 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4433 features |= NETIF_F_HW_VLAN_CTAG_RX; 4434 } 4435 4436 /* give priority to outer insertion and don't support both outer 4437 * and inner insertion 4438 */ 4439 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4440 if (insertion_support->outer & 4441 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4442 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4443 features |= NETIF_F_HW_VLAN_CTAG_TX; 4444 else if (insertion_support->outer & 4445 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4446 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4447 features |= NETIF_F_HW_VLAN_STAG_TX; 4448 } else if (insertion_support->inner != 4449 VIRTCHNL_VLAN_UNSUPPORTED) { 4450 if (insertion_support->inner & 4451 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4452 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4453 features |= NETIF_F_HW_VLAN_CTAG_TX; 4454 } 4455 4456 /* give priority to outer filtering and don't bother if both 4457 * outer and inner filtering are enabled 4458 */ 4459 ethertype_init = vlan_v2_caps->filtering.ethertype_init; 4460 if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4461 if (filtering_support->outer & 4462 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4463 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4464 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4465 if (filtering_support->outer & 4466 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4467 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4468 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4469 } else if (filtering_support->inner != 4470 VIRTCHNL_VLAN_UNSUPPORTED) { 4471 if (filtering_support->inner & 4472 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4473 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4474 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4475 if (filtering_support->inner & 4476 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4477 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4478 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4479 } 4480 } 4481 4482 return features; 4483 } 4484 4485 #define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \ 4486 (!(((requested) & (feature_bit)) && \ 4487 !((allowed) & (feature_bit)))) 4488 4489 /** 4490 * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support 4491 * @adapter: board private structure 4492 * @requested_features: stack requested NETDEV features 4493 **/ 4494 static netdev_features_t 4495 iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter, 4496 netdev_features_t requested_features) 4497 { 4498 netdev_features_t allowed_features; 4499 4500 allowed_features = iavf_get_netdev_vlan_hw_features(adapter) | 4501 iavf_get_netdev_vlan_features(adapter); 4502 4503 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4504 allowed_features, 4505 NETIF_F_HW_VLAN_CTAG_TX)) 4506 requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX; 4507 4508 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4509 allowed_features, 4510 NETIF_F_HW_VLAN_CTAG_RX)) 4511 requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX; 4512 4513 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4514 allowed_features, 4515 NETIF_F_HW_VLAN_STAG_TX)) 4516 requested_features &= ~NETIF_F_HW_VLAN_STAG_TX; 4517 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4518 allowed_features, 4519 NETIF_F_HW_VLAN_STAG_RX)) 4520 requested_features &= ~NETIF_F_HW_VLAN_STAG_RX; 4521 4522 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4523 allowed_features, 4524 NETIF_F_HW_VLAN_CTAG_FILTER)) 4525 requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4526 4527 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4528 allowed_features, 4529 NETIF_F_HW_VLAN_STAG_FILTER)) 4530 requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER; 4531 4532 if ((requested_features & 4533 (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) && 4534 (requested_features & 4535 (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) && 4536 adapter->vlan_v2_caps.offloads.ethertype_match == 4537 VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) { 4538 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"); 4539 requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX | 4540 NETIF_F_HW_VLAN_STAG_TX); 4541 } 4542 4543 return requested_features; 4544 } 4545 4546 /** 4547 * iavf_fix_features - fix up the netdev feature bits 4548 * @netdev: our net device 4549 * @features: desired feature bits 4550 * 4551 * Returns fixed-up features bits 4552 **/ 4553 static netdev_features_t iavf_fix_features(struct net_device *netdev, 4554 netdev_features_t features) 4555 { 4556 struct iavf_adapter *adapter = netdev_priv(netdev); 4557 4558 return iavf_fix_netdev_vlan_features(adapter, features); 4559 } 4560 4561 static const struct net_device_ops iavf_netdev_ops = { 4562 .ndo_open = iavf_open, 4563 .ndo_stop = iavf_close, 4564 .ndo_start_xmit = iavf_xmit_frame, 4565 .ndo_set_rx_mode = iavf_set_rx_mode, 4566 .ndo_validate_addr = eth_validate_addr, 4567 .ndo_set_mac_address = iavf_set_mac, 4568 .ndo_change_mtu = iavf_change_mtu, 4569 .ndo_tx_timeout = iavf_tx_timeout, 4570 .ndo_vlan_rx_add_vid = iavf_vlan_rx_add_vid, 4571 .ndo_vlan_rx_kill_vid = iavf_vlan_rx_kill_vid, 4572 .ndo_features_check = iavf_features_check, 4573 .ndo_fix_features = iavf_fix_features, 4574 .ndo_set_features = iavf_set_features, 4575 .ndo_setup_tc = iavf_setup_tc, 4576 }; 4577 4578 /** 4579 * iavf_check_reset_complete - check that VF reset is complete 4580 * @hw: pointer to hw struct 4581 * 4582 * Returns 0 if device is ready to use, or -EBUSY if it's in reset. 4583 **/ 4584 static int iavf_check_reset_complete(struct iavf_hw *hw) 4585 { 4586 u32 rstat; 4587 int i; 4588 4589 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 4590 rstat = rd32(hw, IAVF_VFGEN_RSTAT) & 4591 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 4592 if ((rstat == VIRTCHNL_VFR_VFACTIVE) || 4593 (rstat == VIRTCHNL_VFR_COMPLETED)) 4594 return 0; 4595 usleep_range(10, 20); 4596 } 4597 return -EBUSY; 4598 } 4599 4600 /** 4601 * iavf_process_config - Process the config information we got from the PF 4602 * @adapter: board private structure 4603 * 4604 * Verify that we have a valid config struct, and set up our netdev features 4605 * and our VSI struct. 4606 **/ 4607 int iavf_process_config(struct iavf_adapter *adapter) 4608 { 4609 struct virtchnl_vf_resource *vfres = adapter->vf_res; 4610 netdev_features_t hw_vlan_features, vlan_features; 4611 struct net_device *netdev = adapter->netdev; 4612 netdev_features_t hw_enc_features; 4613 netdev_features_t hw_features; 4614 4615 hw_enc_features = NETIF_F_SG | 4616 NETIF_F_IP_CSUM | 4617 NETIF_F_IPV6_CSUM | 4618 NETIF_F_HIGHDMA | 4619 NETIF_F_SOFT_FEATURES | 4620 NETIF_F_TSO | 4621 NETIF_F_TSO_ECN | 4622 NETIF_F_TSO6 | 4623 NETIF_F_SCTP_CRC | 4624 NETIF_F_RXHASH | 4625 NETIF_F_RXCSUM | 4626 0; 4627 4628 /* advertise to stack only if offloads for encapsulated packets is 4629 * supported 4630 */ 4631 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) { 4632 hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL | 4633 NETIF_F_GSO_GRE | 4634 NETIF_F_GSO_GRE_CSUM | 4635 NETIF_F_GSO_IPXIP4 | 4636 NETIF_F_GSO_IPXIP6 | 4637 NETIF_F_GSO_UDP_TUNNEL_CSUM | 4638 NETIF_F_GSO_PARTIAL | 4639 0; 4640 4641 if (!(vfres->vf_cap_flags & 4642 VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 4643 netdev->gso_partial_features |= 4644 NETIF_F_GSO_UDP_TUNNEL_CSUM; 4645 4646 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; 4647 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; 4648 netdev->hw_enc_features |= hw_enc_features; 4649 } 4650 /* record features VLANs can make use of */ 4651 netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID; 4652 4653 /* Write features and hw_features separately to avoid polluting 4654 * with, or dropping, features that are set when we registered. 4655 */ 4656 hw_features = hw_enc_features; 4657 4658 /* get HW VLAN features that can be toggled */ 4659 hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter); 4660 4661 /* Enable cloud filter if ADQ is supported */ 4662 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) 4663 hw_features |= NETIF_F_HW_TC; 4664 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO) 4665 hw_features |= NETIF_F_GSO_UDP_L4; 4666 4667 netdev->hw_features |= hw_features | hw_vlan_features; 4668 vlan_features = iavf_get_netdev_vlan_features(adapter); 4669 4670 netdev->features |= hw_features | vlan_features; 4671 4672 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN) 4673 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4674 4675 netdev->priv_flags |= IFF_UNICAST_FLT; 4676 4677 /* Do not turn on offloads when they are requested to be turned off. 4678 * TSO needs minimum 576 bytes to work correctly. 4679 */ 4680 if (netdev->wanted_features) { 4681 if (!(netdev->wanted_features & NETIF_F_TSO) || 4682 netdev->mtu < 576) 4683 netdev->features &= ~NETIF_F_TSO; 4684 if (!(netdev->wanted_features & NETIF_F_TSO6) || 4685 netdev->mtu < 576) 4686 netdev->features &= ~NETIF_F_TSO6; 4687 if (!(netdev->wanted_features & NETIF_F_TSO_ECN)) 4688 netdev->features &= ~NETIF_F_TSO_ECN; 4689 if (!(netdev->wanted_features & NETIF_F_GRO)) 4690 netdev->features &= ~NETIF_F_GRO; 4691 if (!(netdev->wanted_features & NETIF_F_GSO)) 4692 netdev->features &= ~NETIF_F_GSO; 4693 } 4694 4695 return 0; 4696 } 4697 4698 /** 4699 * iavf_shutdown - Shutdown the device in preparation for a reboot 4700 * @pdev: pci device structure 4701 **/ 4702 static void iavf_shutdown(struct pci_dev *pdev) 4703 { 4704 struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev); 4705 struct net_device *netdev = adapter->netdev; 4706 4707 netif_device_detach(netdev); 4708 4709 if (netif_running(netdev)) 4710 iavf_close(netdev); 4711 4712 if (iavf_lock_timeout(&adapter->crit_lock, 5000)) 4713 dev_warn(&adapter->pdev->dev, "failed to acquire crit_lock in %s\n", __FUNCTION__); 4714 /* Prevent the watchdog from running. */ 4715 iavf_change_state(adapter, __IAVF_REMOVE); 4716 adapter->aq_required = 0; 4717 mutex_unlock(&adapter->crit_lock); 4718 4719 #ifdef CONFIG_PM 4720 pci_save_state(pdev); 4721 4722 #endif 4723 pci_disable_device(pdev); 4724 } 4725 4726 /** 4727 * iavf_probe - Device Initialization Routine 4728 * @pdev: PCI device information struct 4729 * @ent: entry in iavf_pci_tbl 4730 * 4731 * Returns 0 on success, negative on failure 4732 * 4733 * iavf_probe initializes an adapter identified by a pci_dev structure. 4734 * The OS initialization, configuring of the adapter private structure, 4735 * and a hardware reset occur. 4736 **/ 4737 static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 4738 { 4739 struct net_device *netdev; 4740 struct iavf_adapter *adapter = NULL; 4741 struct iavf_hw *hw = NULL; 4742 int err; 4743 4744 err = pci_enable_device(pdev); 4745 if (err) 4746 return err; 4747 4748 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 4749 if (err) { 4750 dev_err(&pdev->dev, 4751 "DMA configuration failed: 0x%x\n", err); 4752 goto err_dma; 4753 } 4754 4755 err = pci_request_regions(pdev, iavf_driver_name); 4756 if (err) { 4757 dev_err(&pdev->dev, 4758 "pci_request_regions failed 0x%x\n", err); 4759 goto err_pci_reg; 4760 } 4761 4762 pci_enable_pcie_error_reporting(pdev); 4763 4764 pci_set_master(pdev); 4765 4766 netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter), 4767 IAVF_MAX_REQ_QUEUES); 4768 if (!netdev) { 4769 err = -ENOMEM; 4770 goto err_alloc_etherdev; 4771 } 4772 4773 SET_NETDEV_DEV(netdev, &pdev->dev); 4774 4775 pci_set_drvdata(pdev, netdev); 4776 adapter = netdev_priv(netdev); 4777 4778 adapter->netdev = netdev; 4779 adapter->pdev = pdev; 4780 4781 hw = &adapter->hw; 4782 hw->back = adapter; 4783 4784 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 4785 iavf_change_state(adapter, __IAVF_STARTUP); 4786 4787 /* Call save state here because it relies on the adapter struct. */ 4788 pci_save_state(pdev); 4789 4790 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 4791 pci_resource_len(pdev, 0)); 4792 if (!hw->hw_addr) { 4793 err = -EIO; 4794 goto err_ioremap; 4795 } 4796 hw->vendor_id = pdev->vendor; 4797 hw->device_id = pdev->device; 4798 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); 4799 hw->subsystem_vendor_id = pdev->subsystem_vendor; 4800 hw->subsystem_device_id = pdev->subsystem_device; 4801 hw->bus.device = PCI_SLOT(pdev->devfn); 4802 hw->bus.func = PCI_FUNC(pdev->devfn); 4803 hw->bus.bus_id = pdev->bus->number; 4804 4805 /* set up the locks for the AQ, do this only once in probe 4806 * and destroy them only once in remove 4807 */ 4808 mutex_init(&adapter->crit_lock); 4809 mutex_init(&adapter->client_lock); 4810 mutex_init(&hw->aq.asq_mutex); 4811 mutex_init(&hw->aq.arq_mutex); 4812 4813 spin_lock_init(&adapter->mac_vlan_list_lock); 4814 spin_lock_init(&adapter->cloud_filter_list_lock); 4815 spin_lock_init(&adapter->fdir_fltr_lock); 4816 spin_lock_init(&adapter->adv_rss_lock); 4817 4818 INIT_LIST_HEAD(&adapter->mac_filter_list); 4819 INIT_LIST_HEAD(&adapter->vlan_filter_list); 4820 INIT_LIST_HEAD(&adapter->cloud_filter_list); 4821 INIT_LIST_HEAD(&adapter->fdir_list_head); 4822 INIT_LIST_HEAD(&adapter->adv_rss_list_head); 4823 4824 INIT_WORK(&adapter->reset_task, iavf_reset_task); 4825 INIT_WORK(&adapter->adminq_task, iavf_adminq_task); 4826 INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task); 4827 INIT_DELAYED_WORK(&adapter->client_task, iavf_client_task); 4828 queue_delayed_work(iavf_wq, &adapter->watchdog_task, 4829 msecs_to_jiffies(5 * (pdev->devfn & 0x07))); 4830 4831 /* Setup the wait queue for indicating transition to down status */ 4832 init_waitqueue_head(&adapter->down_waitqueue); 4833 4834 /* Setup the wait queue for indicating virtchannel events */ 4835 init_waitqueue_head(&adapter->vc_waitqueue); 4836 4837 return 0; 4838 4839 err_ioremap: 4840 free_netdev(netdev); 4841 err_alloc_etherdev: 4842 pci_disable_pcie_error_reporting(pdev); 4843 pci_release_regions(pdev); 4844 err_pci_reg: 4845 err_dma: 4846 pci_disable_device(pdev); 4847 return err; 4848 } 4849 4850 /** 4851 * iavf_suspend - Power management suspend routine 4852 * @dev_d: device info pointer 4853 * 4854 * Called when the system (VM) is entering sleep/suspend. 4855 **/ 4856 static int __maybe_unused iavf_suspend(struct device *dev_d) 4857 { 4858 struct net_device *netdev = dev_get_drvdata(dev_d); 4859 struct iavf_adapter *adapter = netdev_priv(netdev); 4860 4861 netif_device_detach(netdev); 4862 4863 while (!mutex_trylock(&adapter->crit_lock)) 4864 usleep_range(500, 1000); 4865 4866 if (netif_running(netdev)) { 4867 rtnl_lock(); 4868 iavf_down(adapter); 4869 rtnl_unlock(); 4870 } 4871 iavf_free_misc_irq(adapter); 4872 iavf_reset_interrupt_capability(adapter); 4873 4874 mutex_unlock(&adapter->crit_lock); 4875 4876 return 0; 4877 } 4878 4879 /** 4880 * iavf_resume - Power management resume routine 4881 * @dev_d: device info pointer 4882 * 4883 * Called when the system (VM) is resumed from sleep/suspend. 4884 **/ 4885 static int __maybe_unused iavf_resume(struct device *dev_d) 4886 { 4887 struct pci_dev *pdev = to_pci_dev(dev_d); 4888 struct iavf_adapter *adapter; 4889 u32 err; 4890 4891 adapter = iavf_pdev_to_adapter(pdev); 4892 4893 pci_set_master(pdev); 4894 4895 rtnl_lock(); 4896 err = iavf_set_interrupt_capability(adapter); 4897 if (err) { 4898 rtnl_unlock(); 4899 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); 4900 return err; 4901 } 4902 err = iavf_request_misc_irq(adapter); 4903 rtnl_unlock(); 4904 if (err) { 4905 dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); 4906 return err; 4907 } 4908 4909 queue_work(iavf_wq, &adapter->reset_task); 4910 4911 netif_device_attach(adapter->netdev); 4912 4913 return err; 4914 } 4915 4916 /** 4917 * iavf_remove - Device Removal Routine 4918 * @pdev: PCI device information struct 4919 * 4920 * iavf_remove is called by the PCI subsystem to alert the driver 4921 * that it should release a PCI device. The could be caused by a 4922 * Hot-Plug event, or because the driver is going to be removed from 4923 * memory. 4924 **/ 4925 static void iavf_remove(struct pci_dev *pdev) 4926 { 4927 struct iavf_adapter *adapter = iavf_pdev_to_adapter(pdev); 4928 struct net_device *netdev = adapter->netdev; 4929 struct iavf_fdir_fltr *fdir, *fdirtmp; 4930 struct iavf_vlan_filter *vlf, *vlftmp; 4931 struct iavf_adv_rss *rss, *rsstmp; 4932 struct iavf_mac_filter *f, *ftmp; 4933 struct iavf_cloud_filter *cf, *cftmp; 4934 struct iavf_hw *hw = &adapter->hw; 4935 int err; 4936 4937 /* When reboot/shutdown is in progress no need to do anything 4938 * as the adapter is already REMOVE state that was set during 4939 * iavf_shutdown() callback. 4940 */ 4941 if (adapter->state == __IAVF_REMOVE) 4942 return; 4943 4944 set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section); 4945 /* Wait until port initialization is complete. 4946 * There are flows where register/unregister netdev may race. 4947 */ 4948 while (1) { 4949 mutex_lock(&adapter->crit_lock); 4950 if (adapter->state == __IAVF_RUNNING || 4951 adapter->state == __IAVF_DOWN || 4952 adapter->state == __IAVF_INIT_FAILED) { 4953 mutex_unlock(&adapter->crit_lock); 4954 break; 4955 } 4956 4957 mutex_unlock(&adapter->crit_lock); 4958 usleep_range(500, 1000); 4959 } 4960 cancel_delayed_work_sync(&adapter->watchdog_task); 4961 4962 if (adapter->netdev_registered) { 4963 rtnl_lock(); 4964 unregister_netdevice(netdev); 4965 adapter->netdev_registered = false; 4966 rtnl_unlock(); 4967 } 4968 if (CLIENT_ALLOWED(adapter)) { 4969 err = iavf_lan_del_device(adapter); 4970 if (err) 4971 dev_warn(&pdev->dev, "Failed to delete client device: %d\n", 4972 err); 4973 } 4974 4975 mutex_lock(&adapter->crit_lock); 4976 dev_info(&adapter->pdev->dev, "Remove device\n"); 4977 iavf_change_state(adapter, __IAVF_REMOVE); 4978 4979 iavf_request_reset(adapter); 4980 msleep(50); 4981 /* If the FW isn't responding, kick it once, but only once. */ 4982 if (!iavf_asq_done(hw)) { 4983 iavf_request_reset(adapter); 4984 msleep(50); 4985 } 4986 4987 iavf_misc_irq_disable(adapter); 4988 /* Shut down all the garbage mashers on the detention level */ 4989 cancel_work_sync(&adapter->reset_task); 4990 cancel_delayed_work_sync(&adapter->watchdog_task); 4991 cancel_work_sync(&adapter->adminq_task); 4992 cancel_delayed_work_sync(&adapter->client_task); 4993 4994 adapter->aq_required = 0; 4995 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 4996 4997 iavf_free_all_tx_resources(adapter); 4998 iavf_free_all_rx_resources(adapter); 4999 iavf_free_misc_irq(adapter); 5000 5001 iavf_reset_interrupt_capability(adapter); 5002 iavf_free_q_vectors(adapter); 5003 5004 iavf_free_rss(adapter); 5005 5006 if (hw->aq.asq.count) 5007 iavf_shutdown_adminq(hw); 5008 5009 /* destroy the locks only once, here */ 5010 mutex_destroy(&hw->aq.arq_mutex); 5011 mutex_destroy(&hw->aq.asq_mutex); 5012 mutex_destroy(&adapter->client_lock); 5013 mutex_unlock(&adapter->crit_lock); 5014 mutex_destroy(&adapter->crit_lock); 5015 5016 iounmap(hw->hw_addr); 5017 pci_release_regions(pdev); 5018 iavf_free_queues(adapter); 5019 kfree(adapter->vf_res); 5020 spin_lock_bh(&adapter->mac_vlan_list_lock); 5021 /* If we got removed before an up/down sequence, we've got a filter 5022 * hanging out there that we need to get rid of. 5023 */ 5024 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 5025 list_del(&f->list); 5026 kfree(f); 5027 } 5028 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 5029 list) { 5030 list_del(&vlf->list); 5031 kfree(vlf); 5032 } 5033 5034 spin_unlock_bh(&adapter->mac_vlan_list_lock); 5035 5036 spin_lock_bh(&adapter->cloud_filter_list_lock); 5037 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 5038 list_del(&cf->list); 5039 kfree(cf); 5040 } 5041 spin_unlock_bh(&adapter->cloud_filter_list_lock); 5042 5043 spin_lock_bh(&adapter->fdir_fltr_lock); 5044 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) { 5045 list_del(&fdir->list); 5046 kfree(fdir); 5047 } 5048 spin_unlock_bh(&adapter->fdir_fltr_lock); 5049 5050 spin_lock_bh(&adapter->adv_rss_lock); 5051 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 5052 list) { 5053 list_del(&rss->list); 5054 kfree(rss); 5055 } 5056 spin_unlock_bh(&adapter->adv_rss_lock); 5057 5058 free_netdev(netdev); 5059 5060 pci_disable_pcie_error_reporting(pdev); 5061 5062 pci_disable_device(pdev); 5063 } 5064 5065 static SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume); 5066 5067 static struct pci_driver iavf_driver = { 5068 .name = iavf_driver_name, 5069 .id_table = iavf_pci_tbl, 5070 .probe = iavf_probe, 5071 .remove = iavf_remove, 5072 .driver.pm = &iavf_pm_ops, 5073 .shutdown = iavf_shutdown, 5074 }; 5075 5076 /** 5077 * iavf_init_module - Driver Registration Routine 5078 * 5079 * iavf_init_module is the first routine called when the driver is 5080 * loaded. All it does is register with the PCI subsystem. 5081 **/ 5082 static int __init iavf_init_module(void) 5083 { 5084 pr_info("iavf: %s\n", iavf_driver_string); 5085 5086 pr_info("%s\n", iavf_copyright); 5087 5088 iavf_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1, 5089 iavf_driver_name); 5090 if (!iavf_wq) { 5091 pr_err("%s: Failed to create workqueue\n", iavf_driver_name); 5092 return -ENOMEM; 5093 } 5094 return pci_register_driver(&iavf_driver); 5095 } 5096 5097 module_init(iavf_init_module); 5098 5099 /** 5100 * iavf_exit_module - Driver Exit Cleanup Routine 5101 * 5102 * iavf_exit_module is called just before the driver is removed 5103 * from memory. 5104 **/ 5105 static void __exit iavf_exit_module(void) 5106 { 5107 pci_unregister_driver(&iavf_driver); 5108 destroy_workqueue(iavf_wq); 5109 } 5110 5111 module_exit(iavf_exit_module); 5112 5113 /* iavf_main.c */ 5114