1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4 #include <linux/net/intel/libie/rx.h> 5 #include <net/netdev_lock.h> 6 7 #include "iavf.h" 8 #include "iavf_ptp.h" 9 #include "iavf_prototype.h" 10 /* All iavf tracepoints are defined by the include below, which must 11 * be included exactly once across the whole kernel with 12 * CREATE_TRACE_POINTS defined 13 */ 14 #define CREATE_TRACE_POINTS 15 #include "iavf_trace.h" 16 17 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter); 18 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter); 19 static int iavf_close(struct net_device *netdev); 20 static void iavf_init_get_resources(struct iavf_adapter *adapter); 21 static int iavf_check_reset_complete(struct iavf_hw *hw); 22 23 char iavf_driver_name[] = "iavf"; 24 static const char iavf_driver_string[] = 25 "Intel(R) Ethernet Adaptive Virtual Function Network Driver"; 26 27 static const char iavf_copyright[] = 28 "Copyright (c) 2013 - 2018 Intel Corporation."; 29 30 /* iavf_pci_tbl - PCI Device ID Table 31 * 32 * Wildcard entries (PCI_ANY_ID) should come last 33 * Last entry must be all 0s 34 * 35 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 36 * Class, Class Mask, private data (not used) } 37 */ 38 static const struct pci_device_id iavf_pci_tbl[] = { 39 { PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF) }, 40 { PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF_HV) }, 41 { PCI_VDEVICE(INTEL, IAVF_DEV_ID_X722_VF) }, 42 { PCI_VDEVICE(INTEL, IAVF_DEV_ID_ADAPTIVE_VF) }, 43 /* required last entry */ 44 { } 45 }; 46 47 MODULE_DEVICE_TABLE(pci, iavf_pci_tbl); 48 49 MODULE_ALIAS("i40evf"); 50 MODULE_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver"); 51 MODULE_IMPORT_NS("LIBETH"); 52 MODULE_IMPORT_NS("LIBIE"); 53 MODULE_IMPORT_NS("LIBIE_ADMINQ"); 54 MODULE_LICENSE("GPL v2"); 55 56 static const struct net_device_ops iavf_netdev_ops; 57 58 int iavf_status_to_errno(enum iavf_status status) 59 { 60 switch (status) { 61 case IAVF_SUCCESS: 62 return 0; 63 case IAVF_ERR_PARAM: 64 case IAVF_ERR_MAC_TYPE: 65 case IAVF_ERR_INVALID_MAC_ADDR: 66 case IAVF_ERR_INVALID_LINK_SETTINGS: 67 case IAVF_ERR_INVALID_PD_ID: 68 case IAVF_ERR_INVALID_QP_ID: 69 case IAVF_ERR_INVALID_CQ_ID: 70 case IAVF_ERR_INVALID_CEQ_ID: 71 case IAVF_ERR_INVALID_AEQ_ID: 72 case IAVF_ERR_INVALID_SIZE: 73 case IAVF_ERR_INVALID_ARP_INDEX: 74 case IAVF_ERR_INVALID_FPM_FUNC_ID: 75 case IAVF_ERR_QP_INVALID_MSG_SIZE: 76 case IAVF_ERR_INVALID_FRAG_COUNT: 77 case IAVF_ERR_INVALID_ALIGNMENT: 78 case IAVF_ERR_INVALID_PUSH_PAGE_INDEX: 79 case IAVF_ERR_INVALID_IMM_DATA_SIZE: 80 case IAVF_ERR_INVALID_VF_ID: 81 case IAVF_ERR_INVALID_HMCFN_ID: 82 case IAVF_ERR_INVALID_PBLE_INDEX: 83 case IAVF_ERR_INVALID_SD_INDEX: 84 case IAVF_ERR_INVALID_PAGE_DESC_INDEX: 85 case IAVF_ERR_INVALID_SD_TYPE: 86 case IAVF_ERR_INVALID_HMC_OBJ_INDEX: 87 case IAVF_ERR_INVALID_HMC_OBJ_COUNT: 88 case IAVF_ERR_INVALID_SRQ_ARM_LIMIT: 89 return -EINVAL; 90 case IAVF_ERR_NVM: 91 case IAVF_ERR_NVM_CHECKSUM: 92 case IAVF_ERR_PHY: 93 case IAVF_ERR_CONFIG: 94 case IAVF_ERR_UNKNOWN_PHY: 95 case IAVF_ERR_LINK_SETUP: 96 case IAVF_ERR_ADAPTER_STOPPED: 97 case IAVF_ERR_PRIMARY_REQUESTS_PENDING: 98 case IAVF_ERR_AUTONEG_NOT_COMPLETE: 99 case IAVF_ERR_RESET_FAILED: 100 case IAVF_ERR_BAD_PTR: 101 case IAVF_ERR_SWFW_SYNC: 102 case IAVF_ERR_QP_TOOMANY_WRS_POSTED: 103 case IAVF_ERR_QUEUE_EMPTY: 104 case IAVF_ERR_FLUSHED_QUEUE: 105 case IAVF_ERR_OPCODE_MISMATCH: 106 case IAVF_ERR_CQP_COMPL_ERROR: 107 case IAVF_ERR_BACKING_PAGE_ERROR: 108 case IAVF_ERR_NO_PBLCHUNKS_AVAILABLE: 109 case IAVF_ERR_MEMCPY_FAILED: 110 case IAVF_ERR_SRQ_ENABLED: 111 case IAVF_ERR_ADMIN_QUEUE_ERROR: 112 case IAVF_ERR_ADMIN_QUEUE_FULL: 113 case IAVF_ERR_BAD_RDMA_CQE: 114 case IAVF_ERR_NVM_BLANK_MODE: 115 case IAVF_ERR_PE_DOORBELL_NOT_ENABLED: 116 case IAVF_ERR_DIAG_TEST_FAILED: 117 case IAVF_ERR_FIRMWARE_API_VERSION: 118 case IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR: 119 return -EIO; 120 case IAVF_ERR_DEVICE_NOT_SUPPORTED: 121 return -ENODEV; 122 case IAVF_ERR_NO_AVAILABLE_VSI: 123 case IAVF_ERR_RING_FULL: 124 return -ENOSPC; 125 case IAVF_ERR_NO_MEMORY: 126 return -ENOMEM; 127 case IAVF_ERR_TIMEOUT: 128 case IAVF_ERR_ADMIN_QUEUE_TIMEOUT: 129 return -ETIMEDOUT; 130 case IAVF_ERR_NOT_IMPLEMENTED: 131 case IAVF_NOT_SUPPORTED: 132 return -EOPNOTSUPP; 133 case IAVF_ERR_ADMIN_QUEUE_NO_WORK: 134 return -EALREADY; 135 case IAVF_ERR_NOT_READY: 136 return -EBUSY; 137 case IAVF_ERR_BUF_TOO_SHORT: 138 return -EMSGSIZE; 139 } 140 141 return -EIO; 142 } 143 144 int virtchnl_status_to_errno(enum virtchnl_status_code v_status) 145 { 146 switch (v_status) { 147 case VIRTCHNL_STATUS_SUCCESS: 148 return 0; 149 case VIRTCHNL_STATUS_ERR_PARAM: 150 case VIRTCHNL_STATUS_ERR_INVALID_VF_ID: 151 return -EINVAL; 152 case VIRTCHNL_STATUS_ERR_NO_MEMORY: 153 return -ENOMEM; 154 case VIRTCHNL_STATUS_ERR_OPCODE_MISMATCH: 155 case VIRTCHNL_STATUS_ERR_CQP_COMPL_ERROR: 156 case VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR: 157 return -EIO; 158 case VIRTCHNL_STATUS_ERR_NOT_SUPPORTED: 159 return -EOPNOTSUPP; 160 } 161 162 return -EIO; 163 } 164 165 /** 166 * iavf_pdev_to_adapter - go from pci_dev to adapter 167 * @pdev: pci_dev pointer 168 */ 169 static struct iavf_adapter *iavf_pdev_to_adapter(struct pci_dev *pdev) 170 { 171 return netdev_priv(pci_get_drvdata(pdev)); 172 } 173 174 /** 175 * iavf_is_reset_in_progress - Check if a reset is in progress 176 * @adapter: board private structure 177 */ 178 static bool iavf_is_reset_in_progress(struct iavf_adapter *adapter) 179 { 180 if (adapter->state == __IAVF_RESETTING || 181 adapter->flags & (IAVF_FLAG_RESET_PENDING | 182 IAVF_FLAG_RESET_NEEDED)) 183 return true; 184 185 return false; 186 } 187 188 /** 189 * iavf_allocate_dma_mem_d - OS specific memory alloc for shared code 190 * @hw: pointer to the HW structure 191 * @mem: ptr to mem struct to fill out 192 * @size: size of memory requested 193 * @alignment: what to align the allocation to 194 **/ 195 enum iavf_status iavf_allocate_dma_mem_d(struct iavf_hw *hw, 196 struct iavf_dma_mem *mem, 197 u64 size, u32 alignment) 198 { 199 struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back; 200 201 if (!mem) 202 return IAVF_ERR_PARAM; 203 204 mem->size = ALIGN(size, alignment); 205 mem->va = dma_alloc_coherent(&adapter->pdev->dev, mem->size, 206 (dma_addr_t *)&mem->pa, GFP_KERNEL); 207 if (mem->va) 208 return 0; 209 else 210 return IAVF_ERR_NO_MEMORY; 211 } 212 213 /** 214 * iavf_free_dma_mem - wrapper for DMA memory freeing 215 * @hw: pointer to the HW structure 216 * @mem: ptr to mem struct to free 217 **/ 218 enum iavf_status iavf_free_dma_mem(struct iavf_hw *hw, struct iavf_dma_mem *mem) 219 { 220 struct iavf_adapter *adapter = (struct iavf_adapter *)hw->back; 221 222 if (!mem || !mem->va) 223 return IAVF_ERR_PARAM; 224 dma_free_coherent(&adapter->pdev->dev, mem->size, 225 mem->va, (dma_addr_t)mem->pa); 226 return 0; 227 } 228 229 /** 230 * iavf_allocate_virt_mem - virt memory alloc wrapper 231 * @hw: pointer to the HW structure 232 * @mem: ptr to mem struct to fill out 233 * @size: size of memory requested 234 **/ 235 enum iavf_status iavf_allocate_virt_mem(struct iavf_hw *hw, 236 struct iavf_virt_mem *mem, u32 size) 237 { 238 if (!mem) 239 return IAVF_ERR_PARAM; 240 241 mem->size = size; 242 mem->va = kzalloc(size, GFP_KERNEL); 243 244 if (mem->va) 245 return 0; 246 else 247 return IAVF_ERR_NO_MEMORY; 248 } 249 250 /** 251 * iavf_free_virt_mem - virt memory free wrapper 252 * @hw: pointer to the HW structure 253 * @mem: ptr to mem struct to free 254 **/ 255 void iavf_free_virt_mem(struct iavf_hw *hw, struct iavf_virt_mem *mem) 256 { 257 kfree(mem->va); 258 } 259 260 /** 261 * iavf_schedule_reset - Set the flags and schedule a reset event 262 * @adapter: board private structure 263 * @flags: IAVF_FLAG_RESET_PENDING or IAVF_FLAG_RESET_NEEDED 264 **/ 265 void iavf_schedule_reset(struct iavf_adapter *adapter, u64 flags) 266 { 267 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section) && 268 !(adapter->flags & 269 (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) { 270 adapter->flags |= flags; 271 queue_work(adapter->wq, &adapter->reset_task); 272 } 273 } 274 275 /** 276 * iavf_schedule_aq_request - Set the flags and schedule aq request 277 * @adapter: board private structure 278 * @flags: requested aq flags 279 **/ 280 void iavf_schedule_aq_request(struct iavf_adapter *adapter, u64 flags) 281 { 282 adapter->aq_required |= flags; 283 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); 284 } 285 286 /** 287 * iavf_tx_timeout - Respond to a Tx Hang 288 * @netdev: network interface device structure 289 * @txqueue: queue number that is timing out 290 **/ 291 static void iavf_tx_timeout(struct net_device *netdev, unsigned int txqueue) 292 { 293 struct iavf_adapter *adapter = netdev_priv(netdev); 294 295 adapter->tx_timeout_count++; 296 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 297 } 298 299 /** 300 * iavf_misc_irq_disable - Mask off interrupt generation on the NIC 301 * @adapter: board private structure 302 **/ 303 static void iavf_misc_irq_disable(struct iavf_adapter *adapter) 304 { 305 struct iavf_hw *hw = &adapter->hw; 306 307 if (!adapter->msix_entries) 308 return; 309 310 wr32(hw, IAVF_VFINT_DYN_CTL01, 0); 311 312 iavf_flush(hw); 313 314 synchronize_irq(adapter->msix_entries[0].vector); 315 } 316 317 /** 318 * iavf_misc_irq_enable - Enable default interrupt generation settings 319 * @adapter: board private structure 320 **/ 321 static void iavf_misc_irq_enable(struct iavf_adapter *adapter) 322 { 323 struct iavf_hw *hw = &adapter->hw; 324 325 wr32(hw, IAVF_VFINT_DYN_CTL01, IAVF_VFINT_DYN_CTL01_INTENA_MASK | 326 IAVF_VFINT_DYN_CTL01_ITR_INDX_MASK); 327 wr32(hw, IAVF_VFINT_ICR0_ENA1, IAVF_VFINT_ICR0_ENA1_ADMINQ_MASK); 328 329 iavf_flush(hw); 330 } 331 332 /** 333 * iavf_irq_disable - Mask off interrupt generation on the NIC 334 * @adapter: board private structure 335 **/ 336 static void iavf_irq_disable(struct iavf_adapter *adapter) 337 { 338 int i; 339 struct iavf_hw *hw = &adapter->hw; 340 341 if (!adapter->msix_entries) 342 return; 343 344 for (i = 1; i < adapter->num_msix_vectors; i++) { 345 wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 0); 346 synchronize_irq(adapter->msix_entries[i].vector); 347 } 348 iavf_flush(hw); 349 } 350 351 /** 352 * iavf_irq_enable_queues - Enable interrupt for all queues 353 * @adapter: board private structure 354 **/ 355 static void iavf_irq_enable_queues(struct iavf_adapter *adapter) 356 { 357 struct iavf_hw *hw = &adapter->hw; 358 int i; 359 360 for (i = 1; i < adapter->num_msix_vectors; i++) { 361 wr32(hw, IAVF_VFINT_DYN_CTLN1(i - 1), 362 IAVF_VFINT_DYN_CTLN1_INTENA_MASK | 363 IAVF_VFINT_DYN_CTLN1_ITR_INDX_MASK); 364 } 365 } 366 367 /** 368 * iavf_irq_enable - Enable default interrupt generation settings 369 * @adapter: board private structure 370 * @flush: boolean value whether to run rd32() 371 **/ 372 void iavf_irq_enable(struct iavf_adapter *adapter, bool flush) 373 { 374 struct iavf_hw *hw = &adapter->hw; 375 376 iavf_misc_irq_enable(adapter); 377 iavf_irq_enable_queues(adapter); 378 379 if (flush) 380 iavf_flush(hw); 381 } 382 383 /** 384 * iavf_msix_aq - Interrupt handler for vector 0 385 * @irq: interrupt number 386 * @data: pointer to netdev 387 **/ 388 static irqreturn_t iavf_msix_aq(int irq, void *data) 389 { 390 struct net_device *netdev = data; 391 struct iavf_adapter *adapter = netdev_priv(netdev); 392 struct iavf_hw *hw = &adapter->hw; 393 394 /* handle non-queue interrupts, these reads clear the registers */ 395 rd32(hw, IAVF_VFINT_ICR01); 396 rd32(hw, IAVF_VFINT_ICR0_ENA1); 397 398 if (adapter->state != __IAVF_REMOVE) 399 /* schedule work on the private workqueue */ 400 queue_work(adapter->wq, &adapter->adminq_task); 401 402 return IRQ_HANDLED; 403 } 404 405 /** 406 * iavf_msix_clean_rings - MSIX mode Interrupt Handler 407 * @irq: interrupt number 408 * @data: pointer to a q_vector 409 **/ 410 static irqreturn_t iavf_msix_clean_rings(int irq, void *data) 411 { 412 struct iavf_q_vector *q_vector = data; 413 414 if (!q_vector->tx.ring && !q_vector->rx.ring) 415 return IRQ_HANDLED; 416 417 napi_schedule_irqoff(&q_vector->napi); 418 419 return IRQ_HANDLED; 420 } 421 422 /** 423 * iavf_map_vector_to_rxq - associate irqs with rx queues 424 * @adapter: board private structure 425 * @v_idx: interrupt number 426 * @r_idx: queue number 427 **/ 428 static void 429 iavf_map_vector_to_rxq(struct iavf_adapter *adapter, int v_idx, int r_idx) 430 { 431 struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx]; 432 struct iavf_ring *rx_ring = &adapter->rx_rings[r_idx]; 433 struct iavf_hw *hw = &adapter->hw; 434 435 rx_ring->q_vector = q_vector; 436 rx_ring->next = q_vector->rx.ring; 437 rx_ring->vsi = &adapter->vsi; 438 q_vector->rx.ring = rx_ring; 439 q_vector->rx.count++; 440 q_vector->rx.next_update = jiffies + 1; 441 q_vector->rx.target_itr = ITR_TO_REG(rx_ring->itr_setting); 442 q_vector->ring_mask |= BIT(r_idx); 443 wr32(hw, IAVF_VFINT_ITRN1(IAVF_RX_ITR, q_vector->reg_idx), 444 q_vector->rx.current_itr >> 1); 445 q_vector->rx.current_itr = q_vector->rx.target_itr; 446 } 447 448 /** 449 * iavf_map_vector_to_txq - associate irqs with tx queues 450 * @adapter: board private structure 451 * @v_idx: interrupt number 452 * @t_idx: queue number 453 **/ 454 static void 455 iavf_map_vector_to_txq(struct iavf_adapter *adapter, int v_idx, int t_idx) 456 { 457 struct iavf_q_vector *q_vector = &adapter->q_vectors[v_idx]; 458 struct iavf_ring *tx_ring = &adapter->tx_rings[t_idx]; 459 struct iavf_hw *hw = &adapter->hw; 460 461 tx_ring->q_vector = q_vector; 462 tx_ring->next = q_vector->tx.ring; 463 tx_ring->vsi = &adapter->vsi; 464 q_vector->tx.ring = tx_ring; 465 q_vector->tx.count++; 466 q_vector->tx.next_update = jiffies + 1; 467 q_vector->tx.target_itr = ITR_TO_REG(tx_ring->itr_setting); 468 q_vector->num_ringpairs++; 469 wr32(hw, IAVF_VFINT_ITRN1(IAVF_TX_ITR, q_vector->reg_idx), 470 q_vector->tx.target_itr >> 1); 471 q_vector->tx.current_itr = q_vector->tx.target_itr; 472 } 473 474 /** 475 * iavf_map_rings_to_vectors - Maps descriptor rings to vectors 476 * @adapter: board private structure to initialize 477 * 478 * This function maps descriptor rings to the queue-specific vectors 479 * we were allotted through the MSI-X enabling code. Ideally, we'd have 480 * one vector per ring/queue, but on a constrained vector budget, we 481 * group the rings as "efficiently" as possible. You would add new 482 * mapping configurations in here. 483 **/ 484 static void iavf_map_rings_to_vectors(struct iavf_adapter *adapter) 485 { 486 int rings_remaining = adapter->num_active_queues; 487 int ridx = 0, vidx = 0; 488 int q_vectors; 489 490 q_vectors = adapter->num_msix_vectors - NONQ_VECS; 491 492 for (; ridx < rings_remaining; ridx++) { 493 iavf_map_vector_to_rxq(adapter, vidx, ridx); 494 iavf_map_vector_to_txq(adapter, vidx, ridx); 495 496 /* In the case where we have more queues than vectors, continue 497 * round-robin on vectors until all queues are mapped. 498 */ 499 if (++vidx >= q_vectors) 500 vidx = 0; 501 } 502 503 adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS; 504 } 505 506 /** 507 * iavf_request_traffic_irqs - Initialize MSI-X interrupts 508 * @adapter: board private structure 509 * @basename: device basename 510 * 511 * Allocates MSI-X vectors for tx and rx handling, and requests 512 * interrupts from the kernel. 513 **/ 514 static int 515 iavf_request_traffic_irqs(struct iavf_adapter *adapter, char *basename) 516 { 517 unsigned int vector, q_vectors; 518 unsigned int rx_int_idx = 0, tx_int_idx = 0; 519 int irq_num, err; 520 521 iavf_irq_disable(adapter); 522 /* Decrement for Other and TCP Timer vectors */ 523 q_vectors = adapter->num_msix_vectors - NONQ_VECS; 524 525 for (vector = 0; vector < q_vectors; vector++) { 526 struct iavf_q_vector *q_vector = &adapter->q_vectors[vector]; 527 528 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector; 529 530 if (q_vector->tx.ring && q_vector->rx.ring) { 531 snprintf(q_vector->name, sizeof(q_vector->name), 532 "iavf-%s-TxRx-%u", basename, rx_int_idx++); 533 tx_int_idx++; 534 } else if (q_vector->rx.ring) { 535 snprintf(q_vector->name, sizeof(q_vector->name), 536 "iavf-%s-rx-%u", basename, rx_int_idx++); 537 } else if (q_vector->tx.ring) { 538 snprintf(q_vector->name, sizeof(q_vector->name), 539 "iavf-%s-tx-%u", basename, tx_int_idx++); 540 } else { 541 /* skip this unused q_vector */ 542 continue; 543 } 544 err = request_irq(irq_num, 545 iavf_msix_clean_rings, 546 0, 547 q_vector->name, 548 q_vector); 549 if (err) { 550 dev_info(&adapter->pdev->dev, 551 "Request_irq failed, error: %d\n", err); 552 goto free_queue_irqs; 553 } 554 } 555 556 return 0; 557 558 free_queue_irqs: 559 while (vector) { 560 vector--; 561 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector; 562 free_irq(irq_num, &adapter->q_vectors[vector]); 563 } 564 return err; 565 } 566 567 /** 568 * iavf_request_misc_irq - Initialize MSI-X interrupts 569 * @adapter: board private structure 570 * 571 * Allocates MSI-X vector 0 and requests interrupts from the kernel. This 572 * vector is only for the admin queue, and stays active even when the netdev 573 * is closed. 574 **/ 575 static int iavf_request_misc_irq(struct iavf_adapter *adapter) 576 { 577 struct net_device *netdev = adapter->netdev; 578 int err; 579 580 snprintf(adapter->misc_vector_name, 581 sizeof(adapter->misc_vector_name) - 1, "iavf-%s:mbx", 582 dev_name(&adapter->pdev->dev)); 583 err = request_irq(adapter->msix_entries[0].vector, 584 &iavf_msix_aq, 0, 585 adapter->misc_vector_name, netdev); 586 if (err) { 587 dev_err(&adapter->pdev->dev, 588 "request_irq for %s failed: %d\n", 589 adapter->misc_vector_name, err); 590 free_irq(adapter->msix_entries[0].vector, netdev); 591 } 592 return err; 593 } 594 595 /** 596 * iavf_free_traffic_irqs - Free MSI-X interrupts 597 * @adapter: board private structure 598 * 599 * Frees all MSI-X vectors other than 0. 600 **/ 601 static void iavf_free_traffic_irqs(struct iavf_adapter *adapter) 602 { 603 struct iavf_q_vector *q_vector; 604 int vector, irq_num, q_vectors; 605 606 if (!adapter->msix_entries) 607 return; 608 609 q_vectors = adapter->num_msix_vectors - NONQ_VECS; 610 611 for (vector = 0; vector < q_vectors; vector++) { 612 q_vector = &adapter->q_vectors[vector]; 613 netif_napi_set_irq_locked(&q_vector->napi, -1); 614 irq_num = adapter->msix_entries[vector + NONQ_VECS].vector; 615 free_irq(irq_num, q_vector); 616 } 617 } 618 619 /** 620 * iavf_free_misc_irq - Free MSI-X miscellaneous vector 621 * @adapter: board private structure 622 * 623 * Frees MSI-X vector 0. 624 **/ 625 static void iavf_free_misc_irq(struct iavf_adapter *adapter) 626 { 627 struct net_device *netdev = adapter->netdev; 628 629 if (!adapter->msix_entries) 630 return; 631 632 free_irq(adapter->msix_entries[0].vector, netdev); 633 } 634 635 /** 636 * iavf_configure_tx - Configure Transmit Unit after Reset 637 * @adapter: board private structure 638 * 639 * Configure the Tx unit of the MAC after a reset. 640 **/ 641 static void iavf_configure_tx(struct iavf_adapter *adapter) 642 { 643 struct iavf_hw *hw = &adapter->hw; 644 int i; 645 646 for (i = 0; i < adapter->num_active_queues; i++) 647 adapter->tx_rings[i].tail = hw->hw_addr + IAVF_QTX_TAIL1(i); 648 } 649 650 /** 651 * iavf_select_rx_desc_format - Select Rx descriptor format 652 * @adapter: adapter private structure 653 * 654 * Select what Rx descriptor format based on availability and enabled 655 * features. 656 * 657 * Return: the desired RXDID to select for a given Rx queue, as defined by 658 * enum virtchnl_rxdid_format. 659 */ 660 static u8 iavf_select_rx_desc_format(const struct iavf_adapter *adapter) 661 { 662 u64 rxdids = adapter->supp_rxdids; 663 664 /* If we did not negotiate VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC, we must 665 * stick with the default value of the legacy 32 byte format. 666 */ 667 if (!IAVF_RXDID_ALLOWED(adapter)) 668 return VIRTCHNL_RXDID_1_32B_BASE; 669 670 /* Rx timestamping requires the use of flexible NIC descriptors */ 671 if (iavf_ptp_cap_supported(adapter, VIRTCHNL_1588_PTP_CAP_RX_TSTAMP)) { 672 if (rxdids & BIT(VIRTCHNL_RXDID_2_FLEX_SQ_NIC)) 673 return VIRTCHNL_RXDID_2_FLEX_SQ_NIC; 674 675 pci_warn(adapter->pdev, 676 "Unable to negotiate flexible descriptor format\n"); 677 } 678 679 /* Warn if the PF does not list support for the default legacy 680 * descriptor format. This shouldn't happen, as this is the format 681 * used if VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC is not supported. It is 682 * likely caused by a bug in the PF implementation failing to indicate 683 * support for the format. 684 */ 685 if (!(rxdids & VIRTCHNL_RXDID_1_32B_BASE_M)) 686 netdev_warn(adapter->netdev, "PF does not list support for default Rx descriptor format\n"); 687 688 return VIRTCHNL_RXDID_1_32B_BASE; 689 } 690 691 /** 692 * iavf_configure_rx - Configure Receive Unit after Reset 693 * @adapter: board private structure 694 * 695 * Configure the Rx unit of the MAC after a reset. 696 **/ 697 static void iavf_configure_rx(struct iavf_adapter *adapter) 698 { 699 struct iavf_hw *hw = &adapter->hw; 700 701 adapter->rxdid = iavf_select_rx_desc_format(adapter); 702 703 for (u32 i = 0; i < adapter->num_active_queues; i++) { 704 adapter->rx_rings[i].tail = hw->hw_addr + IAVF_QRX_TAIL1(i); 705 adapter->rx_rings[i].rxdid = adapter->rxdid; 706 } 707 } 708 709 /** 710 * iavf_find_vlan - Search filter list for specific vlan filter 711 * @adapter: board private structure 712 * @vlan: vlan tag 713 * 714 * Returns ptr to the filter object or NULL. Must be called while holding the 715 * mac_vlan_list_lock. 716 **/ 717 static struct 718 iavf_vlan_filter *iavf_find_vlan(struct iavf_adapter *adapter, 719 struct iavf_vlan vlan) 720 { 721 struct iavf_vlan_filter *f; 722 723 list_for_each_entry(f, &adapter->vlan_filter_list, list) { 724 if (f->vlan.vid == vlan.vid && 725 f->vlan.tpid == vlan.tpid) 726 return f; 727 } 728 729 return NULL; 730 } 731 732 /** 733 * iavf_add_vlan - Add a vlan filter to the list 734 * @adapter: board private structure 735 * @vlan: VLAN tag 736 * 737 * Returns ptr to the filter object or NULL when no memory available. 738 **/ 739 static struct 740 iavf_vlan_filter *iavf_add_vlan(struct iavf_adapter *adapter, 741 struct iavf_vlan vlan) 742 { 743 struct iavf_vlan_filter *f = NULL; 744 745 spin_lock_bh(&adapter->mac_vlan_list_lock); 746 747 f = iavf_find_vlan(adapter, vlan); 748 if (!f) { 749 f = kzalloc_obj(*f, GFP_ATOMIC); 750 if (!f) 751 goto clearout; 752 753 f->vlan = vlan; 754 755 list_add_tail(&f->list, &adapter->vlan_filter_list); 756 f->state = IAVF_VLAN_ADD; 757 adapter->num_vlan_filters++; 758 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_VLAN_FILTER); 759 } else if (f->state == IAVF_VLAN_REMOVE) { 760 /* DEL not yet sent to PF, cancel it */ 761 f->state = IAVF_VLAN_ACTIVE; 762 } else if (f->state == IAVF_VLAN_REMOVING) { 763 /* DEL already sent to PF, re-add after completion */ 764 f->state = IAVF_VLAN_ADD; 765 iavf_schedule_aq_request(adapter, 766 IAVF_FLAG_AQ_ADD_VLAN_FILTER); 767 } 768 769 clearout: 770 spin_unlock_bh(&adapter->mac_vlan_list_lock); 771 return f; 772 } 773 774 /** 775 * iavf_del_vlan - Remove a vlan filter from the list 776 * @adapter: board private structure 777 * @vlan: VLAN tag 778 **/ 779 static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan) 780 { 781 struct iavf_vlan_filter *f; 782 783 spin_lock_bh(&adapter->mac_vlan_list_lock); 784 785 f = iavf_find_vlan(adapter, vlan); 786 if (f) { 787 /* IAVF_ADD_VLAN means that VLAN wasn't even added yet. 788 * Remove it from the list. 789 */ 790 if (f->state == IAVF_VLAN_ADD) { 791 list_del(&f->list); 792 kfree(f); 793 adapter->num_vlan_filters--; 794 } else if (f->state != IAVF_VLAN_REMOVING) { 795 f->state = IAVF_VLAN_REMOVE; 796 iavf_schedule_aq_request(adapter, 797 IAVF_FLAG_AQ_DEL_VLAN_FILTER); 798 } 799 /* If REMOVING, DEL is already sent to PF; completion 800 * handler will free the filter when PF confirms. 801 */ 802 } 803 804 spin_unlock_bh(&adapter->mac_vlan_list_lock); 805 } 806 807 808 /** 809 * iavf_get_num_vlans_added - get number of VLANs added 810 * @adapter: board private structure 811 */ 812 u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter) 813 { 814 return adapter->num_vlan_filters; 815 } 816 817 /** 818 * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF 819 * @adapter: board private structure 820 * 821 * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN, 822 * do not impose a limit as that maintains current behavior and for 823 * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF. 824 **/ 825 static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter) 826 { 827 /* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has 828 * never been a limit on the VF driver side 829 */ 830 if (VLAN_ALLOWED(adapter)) 831 return VLAN_N_VID; 832 else if (VLAN_V2_ALLOWED(adapter)) 833 return adapter->vlan_v2_caps.filtering.max_filters; 834 835 return 0; 836 } 837 838 /** 839 * iavf_max_vlans_added - check if maximum VLANs allowed already exist 840 * @adapter: board private structure 841 **/ 842 static bool iavf_max_vlans_added(struct iavf_adapter *adapter) 843 { 844 if (iavf_get_num_vlans_added(adapter) < 845 iavf_get_max_vlans_allowed(adapter)) 846 return false; 847 848 return true; 849 } 850 851 /** 852 * iavf_vlan_rx_add_vid - Add a VLAN filter to a device 853 * @netdev: network device struct 854 * @proto: unused protocol data 855 * @vid: VLAN tag 856 **/ 857 static int iavf_vlan_rx_add_vid(struct net_device *netdev, 858 __always_unused __be16 proto, u16 vid) 859 { 860 struct iavf_adapter *adapter = netdev_priv(netdev); 861 862 /* Do not track VLAN 0 filter, always added by the PF on VF init */ 863 if (!vid) 864 return 0; 865 866 if (!VLAN_FILTERING_ALLOWED(adapter)) 867 return -EIO; 868 869 if (iavf_max_vlans_added(adapter)) { 870 netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n", 871 iavf_get_max_vlans_allowed(adapter)); 872 return -EIO; 873 } 874 875 if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)))) 876 return -ENOMEM; 877 878 return 0; 879 } 880 881 /** 882 * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device 883 * @netdev: network device struct 884 * @proto: unused protocol data 885 * @vid: VLAN tag 886 **/ 887 static int iavf_vlan_rx_kill_vid(struct net_device *netdev, 888 __always_unused __be16 proto, u16 vid) 889 { 890 struct iavf_adapter *adapter = netdev_priv(netdev); 891 892 /* We do not track VLAN 0 filter */ 893 if (!vid) 894 return 0; 895 896 iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))); 897 return 0; 898 } 899 900 /** 901 * iavf_find_filter - Search filter list for specific mac filter 902 * @adapter: board private structure 903 * @macaddr: the MAC address 904 * 905 * Returns ptr to the filter object or NULL. Must be called while holding the 906 * mac_vlan_list_lock. 907 **/ 908 static struct 909 iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter, 910 const u8 *macaddr) 911 { 912 struct iavf_mac_filter *f; 913 914 if (!macaddr) 915 return NULL; 916 917 list_for_each_entry(f, &adapter->mac_filter_list, list) { 918 if (ether_addr_equal(macaddr, f->macaddr)) 919 return f; 920 } 921 return NULL; 922 } 923 924 /** 925 * iavf_add_filter - Add a mac filter to the filter list 926 * @adapter: board private structure 927 * @macaddr: the MAC address 928 * 929 * Returns ptr to the filter object or NULL when no memory available. 930 **/ 931 struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter, 932 const u8 *macaddr) 933 { 934 struct iavf_mac_filter *f; 935 936 if (!macaddr) 937 return NULL; 938 939 f = iavf_find_filter(adapter, macaddr); 940 if (!f) { 941 f = kzalloc_obj(*f, GFP_ATOMIC); 942 if (!f) 943 return f; 944 945 ether_addr_copy(f->macaddr, macaddr); 946 947 list_add_tail(&f->list, &adapter->mac_filter_list); 948 f->add = true; 949 f->add_handled = false; 950 f->is_new_mac = true; 951 f->is_primary = ether_addr_equal(macaddr, adapter->hw.mac.addr); 952 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 953 } else { 954 f->remove = false; 955 } 956 957 return f; 958 } 959 960 /** 961 * iavf_replace_primary_mac - Replace current primary address 962 * @adapter: board private structure 963 * @new_mac: new MAC address to be applied 964 * 965 * Replace current dev_addr and send request to PF for removal of previous 966 * primary MAC address filter and addition of new primary MAC filter. 967 * Return 0 for success, -ENOMEM for failure. 968 * 969 * Do not call this with mac_vlan_list_lock! 970 **/ 971 static int iavf_replace_primary_mac(struct iavf_adapter *adapter, 972 const u8 *new_mac) 973 { 974 struct iavf_hw *hw = &adapter->hw; 975 struct iavf_mac_filter *new_f; 976 struct iavf_mac_filter *old_f; 977 978 spin_lock_bh(&adapter->mac_vlan_list_lock); 979 980 new_f = iavf_add_filter(adapter, new_mac); 981 if (!new_f) { 982 spin_unlock_bh(&adapter->mac_vlan_list_lock); 983 return -ENOMEM; 984 } 985 986 old_f = iavf_find_filter(adapter, hw->mac.addr); 987 if (old_f) { 988 old_f->is_primary = false; 989 old_f->remove = true; 990 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 991 } 992 /* Always send the request to add if changing primary MAC, 993 * even if filter is already present on the list 994 */ 995 new_f->is_primary = true; 996 new_f->add = true; 997 ether_addr_copy(hw->mac.addr, new_mac); 998 999 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1000 1001 /* schedule the watchdog task to immediately process the request */ 1002 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_MAC_FILTER); 1003 return 0; 1004 } 1005 1006 /** 1007 * iavf_is_mac_set_handled - wait for a response to set MAC from PF 1008 * @netdev: network interface device structure 1009 * @macaddr: MAC address to set 1010 * 1011 * Returns true on success, false on failure 1012 */ 1013 static bool iavf_is_mac_set_handled(struct net_device *netdev, 1014 const u8 *macaddr) 1015 { 1016 struct iavf_adapter *adapter = netdev_priv(netdev); 1017 struct iavf_mac_filter *f; 1018 bool ret = false; 1019 1020 spin_lock_bh(&adapter->mac_vlan_list_lock); 1021 1022 f = iavf_find_filter(adapter, macaddr); 1023 1024 if (!f || (!f->add && f->add_handled)) 1025 ret = true; 1026 1027 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1028 1029 return ret; 1030 } 1031 1032 /** 1033 * iavf_set_mac - NDO callback to set port MAC address 1034 * @netdev: network interface device structure 1035 * @p: pointer to an address structure 1036 * 1037 * Returns 0 on success, negative on failure 1038 */ 1039 static int iavf_set_mac(struct net_device *netdev, void *p) 1040 { 1041 struct iavf_adapter *adapter = netdev_priv(netdev); 1042 struct sockaddr *addr = p; 1043 int ret; 1044 1045 if (!is_valid_ether_addr(addr->sa_data)) 1046 return -EADDRNOTAVAIL; 1047 1048 ret = iavf_replace_primary_mac(adapter, addr->sa_data); 1049 1050 if (ret) 1051 return ret; 1052 1053 ret = wait_event_interruptible_timeout(adapter->vc_waitqueue, 1054 iavf_is_mac_set_handled(netdev, addr->sa_data), 1055 msecs_to_jiffies(2500)); 1056 1057 /* If ret < 0 then it means wait was interrupted. 1058 * If ret == 0 then it means we got a timeout. 1059 * else it means we got response for set MAC from PF, 1060 * check if netdev MAC was updated to requested MAC, 1061 * if yes then set MAC succeeded otherwise it failed return -EACCES 1062 */ 1063 if (ret < 0) 1064 return ret; 1065 1066 if (!ret) 1067 return -EAGAIN; 1068 1069 if (!ether_addr_equal(netdev->dev_addr, addr->sa_data)) 1070 return -EACCES; 1071 1072 return 0; 1073 } 1074 1075 /** 1076 * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address 1077 * @netdev: the netdevice 1078 * @addr: address to add 1079 * 1080 * Called by __dev_(mc|uc)_sync when an address needs to be added. We call 1081 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1082 */ 1083 static int iavf_addr_sync(struct net_device *netdev, const u8 *addr) 1084 { 1085 struct iavf_adapter *adapter = netdev_priv(netdev); 1086 1087 if (iavf_add_filter(adapter, addr)) 1088 return 0; 1089 else 1090 return -ENOMEM; 1091 } 1092 1093 /** 1094 * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address 1095 * @netdev: the netdevice 1096 * @addr: address to add 1097 * 1098 * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call 1099 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1100 */ 1101 static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr) 1102 { 1103 struct iavf_adapter *adapter = netdev_priv(netdev); 1104 struct iavf_mac_filter *f; 1105 1106 /* Under some circumstances, we might receive a request to delete 1107 * our own device address from our uc list. Because we store the 1108 * device address in the VSI's MAC/VLAN filter list, we need to ignore 1109 * such requests and not delete our device address from this list. 1110 */ 1111 if (ether_addr_equal(addr, netdev->dev_addr)) 1112 return 0; 1113 1114 f = iavf_find_filter(adapter, addr); 1115 if (f) { 1116 f->remove = true; 1117 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1118 } 1119 return 0; 1120 } 1121 1122 /** 1123 * iavf_promiscuous_mode_changed - check if promiscuous mode bits changed 1124 * @adapter: device specific adapter 1125 */ 1126 bool iavf_promiscuous_mode_changed(struct iavf_adapter *adapter) 1127 { 1128 return (adapter->current_netdev_promisc_flags ^ adapter->netdev->flags) & 1129 (IFF_PROMISC | IFF_ALLMULTI); 1130 } 1131 1132 /** 1133 * iavf_set_rx_mode - NDO callback to set the netdev filters 1134 * @netdev: network interface device structure 1135 * @uc: snapshot of uc address list 1136 * @mc: snapshot of mc address list 1137 * 1138 * Return: 0 on success. 1139 **/ 1140 static int iavf_set_rx_mode(struct net_device *netdev, 1141 struct netdev_hw_addr_list *uc, 1142 struct netdev_hw_addr_list *mc) 1143 { 1144 struct iavf_adapter *adapter = netdev_priv(netdev); 1145 1146 spin_lock_bh(&adapter->mac_vlan_list_lock); 1147 __hw_addr_sync_dev(uc, netdev, iavf_addr_sync, iavf_addr_unsync); 1148 __hw_addr_sync_dev(mc, netdev, iavf_addr_sync, iavf_addr_unsync); 1149 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1150 1151 spin_lock_bh(&adapter->current_netdev_promisc_flags_lock); 1152 if (iavf_promiscuous_mode_changed(adapter)) 1153 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE; 1154 spin_unlock_bh(&adapter->current_netdev_promisc_flags_lock); 1155 1156 return 0; 1157 } 1158 1159 /** 1160 * iavf_napi_enable_all - enable NAPI on all queue vectors 1161 * @adapter: board private structure 1162 **/ 1163 static void iavf_napi_enable_all(struct iavf_adapter *adapter) 1164 { 1165 int q_idx; 1166 struct iavf_q_vector *q_vector; 1167 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1168 1169 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1170 struct napi_struct *napi; 1171 1172 q_vector = &adapter->q_vectors[q_idx]; 1173 napi = &q_vector->napi; 1174 napi_enable_locked(napi); 1175 } 1176 } 1177 1178 /** 1179 * iavf_napi_disable_all - disable NAPI on all queue vectors 1180 * @adapter: board private structure 1181 **/ 1182 static void iavf_napi_disable_all(struct iavf_adapter *adapter) 1183 { 1184 int q_idx; 1185 struct iavf_q_vector *q_vector; 1186 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1187 1188 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1189 q_vector = &adapter->q_vectors[q_idx]; 1190 napi_disable_locked(&q_vector->napi); 1191 } 1192 } 1193 1194 /** 1195 * iavf_configure - set up transmit and receive data structures 1196 * @adapter: board private structure 1197 **/ 1198 static void iavf_configure(struct iavf_adapter *adapter) 1199 { 1200 struct net_device *netdev = adapter->netdev; 1201 int i; 1202 1203 netif_addr_lock_bh(netdev); 1204 iavf_set_rx_mode(netdev, &netdev->uc, &netdev->mc); 1205 netif_addr_unlock_bh(netdev); 1206 1207 iavf_configure_tx(adapter); 1208 iavf_configure_rx(adapter); 1209 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES; 1210 1211 for (i = 0; i < adapter->num_active_queues; i++) { 1212 struct iavf_ring *ring = &adapter->rx_rings[i]; 1213 1214 iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring)); 1215 } 1216 } 1217 1218 /** 1219 * iavf_up_complete - Finish the last steps of bringing up a connection 1220 * @adapter: board private structure 1221 */ 1222 static void iavf_up_complete(struct iavf_adapter *adapter) 1223 { 1224 netdev_assert_locked(adapter->netdev); 1225 1226 iavf_change_state(adapter, __IAVF_RUNNING); 1227 clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1228 1229 iavf_napi_enable_all(adapter); 1230 1231 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ENABLE_QUEUES); 1232 } 1233 1234 /** 1235 * iavf_clear_mac_filters - Remove MAC filters not sent to PF yet and mark 1236 * others to be removed. 1237 * @adapter: board private structure 1238 **/ 1239 static void iavf_clear_mac_filters(struct iavf_adapter *adapter) 1240 { 1241 struct iavf_mac_filter *f, *ftmp; 1242 1243 spin_lock_bh(&adapter->mac_vlan_list_lock); 1244 /* clear the sync flag on all filters */ 1245 __dev_uc_unsync(adapter->netdev, NULL); 1246 __dev_mc_unsync(adapter->netdev, NULL); 1247 1248 /* remove all MAC filters */ 1249 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, 1250 list) { 1251 if (f->add) { 1252 list_del(&f->list); 1253 kfree(f); 1254 } else { 1255 f->remove = true; 1256 } 1257 } 1258 1259 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1260 } 1261 1262 /** 1263 * iavf_clear_cloud_filters - Remove cloud filters not sent to PF yet and 1264 * mark other to be removed. 1265 * @adapter: board private structure 1266 **/ 1267 static void iavf_clear_cloud_filters(struct iavf_adapter *adapter) 1268 { 1269 struct iavf_cloud_filter *cf, *cftmp; 1270 1271 /* remove all cloud filters */ 1272 spin_lock_bh(&adapter->cloud_filter_list_lock); 1273 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 1274 list) { 1275 if (cf->add) { 1276 list_del(&cf->list); 1277 kfree(cf); 1278 adapter->num_cloud_filters--; 1279 } else { 1280 cf->del = true; 1281 } 1282 } 1283 spin_unlock_bh(&adapter->cloud_filter_list_lock); 1284 } 1285 1286 /** 1287 * iavf_clear_fdir_filters - Remove fdir filters not sent to PF yet and mark 1288 * other to be removed. 1289 * @adapter: board private structure 1290 **/ 1291 static void iavf_clear_fdir_filters(struct iavf_adapter *adapter) 1292 { 1293 struct iavf_fdir_fltr *fdir; 1294 1295 /* remove all Flow Director filters */ 1296 spin_lock_bh(&adapter->fdir_fltr_lock); 1297 list_for_each_entry(fdir, &adapter->fdir_list_head, list) { 1298 if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST) { 1299 /* Cancel a request, keep filter as inactive */ 1300 fdir->state = IAVF_FDIR_FLTR_INACTIVE; 1301 } else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING || 1302 fdir->state == IAVF_FDIR_FLTR_ACTIVE) { 1303 /* Disable filters which are active or have a pending 1304 * request to PF to be added 1305 */ 1306 fdir->state = IAVF_FDIR_FLTR_DIS_REQUEST; 1307 } 1308 } 1309 spin_unlock_bh(&adapter->fdir_fltr_lock); 1310 } 1311 1312 /** 1313 * iavf_clear_adv_rss_conf - Remove adv rss conf not sent to PF yet and mark 1314 * other to be removed. 1315 * @adapter: board private structure 1316 **/ 1317 static void iavf_clear_adv_rss_conf(struct iavf_adapter *adapter) 1318 { 1319 struct iavf_adv_rss *rss, *rsstmp; 1320 1321 /* remove all advance RSS configuration */ 1322 spin_lock_bh(&adapter->adv_rss_lock); 1323 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 1324 list) { 1325 if (rss->state == IAVF_ADV_RSS_ADD_REQUEST) { 1326 list_del(&rss->list); 1327 kfree(rss); 1328 } else { 1329 rss->state = IAVF_ADV_RSS_DEL_REQUEST; 1330 } 1331 } 1332 spin_unlock_bh(&adapter->adv_rss_lock); 1333 } 1334 1335 /** 1336 * iavf_down - Shutdown the connection processing 1337 * @adapter: board private structure 1338 */ 1339 void iavf_down(struct iavf_adapter *adapter) 1340 { 1341 struct net_device *netdev = adapter->netdev; 1342 1343 netdev_assert_locked(netdev); 1344 1345 if (adapter->state <= __IAVF_DOWN_PENDING) 1346 return; 1347 1348 netif_carrier_off(netdev); 1349 netif_tx_disable(netdev); 1350 adapter->link_up = false; 1351 iavf_napi_disable_all(adapter); 1352 iavf_irq_disable(adapter); 1353 1354 iavf_clear_mac_filters(adapter); 1355 iavf_clear_cloud_filters(adapter); 1356 iavf_clear_fdir_filters(adapter); 1357 iavf_clear_adv_rss_conf(adapter); 1358 1359 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 1360 return; 1361 1362 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 1363 /* cancel any current operation */ 1364 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 1365 /* Schedule operations to close down the HW. Don't wait 1366 * here for this to complete. The watchdog is still running 1367 * and it will take care of this. 1368 */ 1369 if (!list_empty(&adapter->mac_filter_list)) 1370 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1371 if (!list_empty(&adapter->cloud_filter_list)) 1372 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 1373 if (!list_empty(&adapter->fdir_list_head)) 1374 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 1375 if (!list_empty(&adapter->adv_rss_list_head)) 1376 adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG; 1377 } 1378 1379 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_DISABLE_QUEUES); 1380 } 1381 1382 /** 1383 * iavf_acquire_msix_vectors - Setup the MSIX capability 1384 * @adapter: board private structure 1385 * @vectors: number of vectors to request 1386 * 1387 * Work with the OS to set up the MSIX vectors needed. 1388 * 1389 * Returns 0 on success, negative on failure 1390 **/ 1391 static int 1392 iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors) 1393 { 1394 int err, vector_threshold; 1395 1396 /* We'll want at least 3 (vector_threshold): 1397 * 0) Other (Admin Queue and link, mostly) 1398 * 1) TxQ[0] Cleanup 1399 * 2) RxQ[0] Cleanup 1400 */ 1401 vector_threshold = MIN_MSIX_COUNT; 1402 1403 /* The more we get, the more we will assign to Tx/Rx Cleanup 1404 * for the separate queues...where Rx Cleanup >= Tx Cleanup. 1405 * Right now, we simply care about how many we'll get; we'll 1406 * set them up later while requesting irq's. 1407 */ 1408 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, 1409 vector_threshold, vectors); 1410 if (err < 0) { 1411 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); 1412 kfree(adapter->msix_entries); 1413 adapter->msix_entries = NULL; 1414 return err; 1415 } 1416 1417 /* Adjust for only the vectors we'll use, which is minimum 1418 * of max_msix_q_vectors + NONQ_VECS, or the number of 1419 * vectors we were allocated. 1420 */ 1421 adapter->num_msix_vectors = err; 1422 return 0; 1423 } 1424 1425 /** 1426 * iavf_free_queues - Free memory for all rings 1427 * @adapter: board private structure to initialize 1428 * 1429 * Free all of the memory associated with queue pairs. 1430 **/ 1431 static void iavf_free_queues(struct iavf_adapter *adapter) 1432 { 1433 if (!adapter->vsi_res) 1434 return; 1435 adapter->num_active_queues = 0; 1436 kfree(adapter->tx_rings); 1437 adapter->tx_rings = NULL; 1438 kfree(adapter->rx_rings); 1439 adapter->rx_rings = NULL; 1440 } 1441 1442 /** 1443 * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload 1444 * @adapter: board private structure 1445 * 1446 * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or 1447 * stripped in certain descriptor fields. Instead of checking the offload 1448 * capability bits in the hot path, cache the location the ring specific 1449 * flags. 1450 */ 1451 void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter) 1452 { 1453 int i; 1454 1455 for (i = 0; i < adapter->num_active_queues; i++) { 1456 struct iavf_ring *tx_ring = &adapter->tx_rings[i]; 1457 struct iavf_ring *rx_ring = &adapter->rx_rings[i]; 1458 1459 /* prevent multiple L2TAG bits being set after VFR */ 1460 tx_ring->flags &= 1461 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1462 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2); 1463 rx_ring->flags &= 1464 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1465 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2); 1466 1467 if (VLAN_ALLOWED(adapter)) { 1468 tx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1469 rx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1470 } else if (VLAN_V2_ALLOWED(adapter)) { 1471 struct virtchnl_vlan_supported_caps *stripping_support; 1472 struct virtchnl_vlan_supported_caps *insertion_support; 1473 1474 stripping_support = 1475 &adapter->vlan_v2_caps.offloads.stripping_support; 1476 insertion_support = 1477 &adapter->vlan_v2_caps.offloads.insertion_support; 1478 1479 if (stripping_support->outer) { 1480 if (stripping_support->outer & 1481 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1482 rx_ring->flags |= 1483 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1484 else if (stripping_support->outer & 1485 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1486 rx_ring->flags |= 1487 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1488 } else if (stripping_support->inner) { 1489 if (stripping_support->inner & 1490 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1491 rx_ring->flags |= 1492 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1493 else if (stripping_support->inner & 1494 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1495 rx_ring->flags |= 1496 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1497 } 1498 1499 if (insertion_support->outer) { 1500 if (insertion_support->outer & 1501 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1502 tx_ring->flags |= 1503 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1504 else if (insertion_support->outer & 1505 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1506 tx_ring->flags |= 1507 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1508 } else if (insertion_support->inner) { 1509 if (insertion_support->inner & 1510 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1511 tx_ring->flags |= 1512 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1513 else if (insertion_support->inner & 1514 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1515 tx_ring->flags |= 1516 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1517 } 1518 } 1519 } 1520 } 1521 1522 /** 1523 * iavf_alloc_queues - Allocate memory for all rings 1524 * @adapter: board private structure to initialize 1525 * 1526 * We allocate one ring per queue at run-time since we don't know the 1527 * number of queues at compile-time. The polling_netdev array is 1528 * intended for Multiqueue, but should work fine with a single queue. 1529 **/ 1530 static int iavf_alloc_queues(struct iavf_adapter *adapter) 1531 { 1532 int i, num_active_queues; 1533 1534 /* If we're in reset reallocating queues we don't actually know yet for 1535 * certain the PF gave us the number of queues we asked for but we'll 1536 * assume it did. Once basic reset is finished we'll confirm once we 1537 * start negotiating config with PF. 1538 */ 1539 if (adapter->num_req_queues) 1540 num_active_queues = adapter->num_req_queues; 1541 else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1542 adapter->num_tc) 1543 num_active_queues = adapter->ch_config.total_qps; 1544 else 1545 num_active_queues = min_t(int, 1546 adapter->vsi_res->num_queue_pairs, 1547 (int)(num_online_cpus())); 1548 1549 1550 adapter->tx_rings = kzalloc_objs(struct iavf_ring, num_active_queues); 1551 if (!adapter->tx_rings) 1552 goto err_out; 1553 adapter->rx_rings = kzalloc_objs(struct iavf_ring, num_active_queues); 1554 if (!adapter->rx_rings) 1555 goto err_out; 1556 1557 for (i = 0; i < num_active_queues; i++) { 1558 struct iavf_ring *tx_ring; 1559 struct iavf_ring *rx_ring; 1560 1561 tx_ring = &adapter->tx_rings[i]; 1562 1563 tx_ring->queue_index = i; 1564 tx_ring->netdev = adapter->netdev; 1565 tx_ring->dev = &adapter->pdev->dev; 1566 tx_ring->count = adapter->tx_desc_count; 1567 tx_ring->itr_setting = IAVF_ITR_TX_DEF; 1568 if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE) 1569 tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR; 1570 1571 rx_ring = &adapter->rx_rings[i]; 1572 rx_ring->queue_index = i; 1573 rx_ring->netdev = adapter->netdev; 1574 rx_ring->count = adapter->rx_desc_count; 1575 rx_ring->itr_setting = IAVF_ITR_RX_DEF; 1576 } 1577 1578 adapter->num_active_queues = num_active_queues; 1579 1580 iavf_set_queue_vlan_tag_loc(adapter); 1581 1582 return 0; 1583 1584 err_out: 1585 iavf_free_queues(adapter); 1586 return -ENOMEM; 1587 } 1588 1589 /** 1590 * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported 1591 * @adapter: board private structure to initialize 1592 * 1593 * Attempt to configure the interrupts using the best available 1594 * capabilities of the hardware and the kernel. 1595 **/ 1596 static int iavf_set_interrupt_capability(struct iavf_adapter *adapter) 1597 { 1598 int vector, v_budget; 1599 int pairs = 0; 1600 int err = 0; 1601 1602 if (!adapter->vsi_res) { 1603 err = -EIO; 1604 goto out; 1605 } 1606 pairs = adapter->num_active_queues; 1607 1608 /* It's easy to be greedy for MSI-X vectors, but it really doesn't do 1609 * us much good if we have more vectors than CPUs. However, we already 1610 * limit the total number of queues by the number of CPUs so we do not 1611 * need any further limiting here. 1612 */ 1613 v_budget = min_t(int, pairs + NONQ_VECS, 1614 (int)adapter->vf_res->max_vectors); 1615 1616 adapter->msix_entries = kzalloc_objs(struct msix_entry, v_budget); 1617 if (!adapter->msix_entries) { 1618 err = -ENOMEM; 1619 goto out; 1620 } 1621 1622 for (vector = 0; vector < v_budget; vector++) 1623 adapter->msix_entries[vector].entry = vector; 1624 1625 err = iavf_acquire_msix_vectors(adapter, v_budget); 1626 if (!err) 1627 iavf_schedule_finish_config(adapter); 1628 1629 out: 1630 return err; 1631 } 1632 1633 /** 1634 * iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands 1635 * @adapter: board private structure 1636 * 1637 * Return 0 on success, negative on failure 1638 **/ 1639 static int iavf_config_rss_aq(struct iavf_adapter *adapter) 1640 { 1641 struct iavf_aqc_get_set_rss_key_data *rss_key = 1642 (struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key; 1643 struct iavf_hw *hw = &adapter->hw; 1644 enum iavf_status status; 1645 1646 if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) { 1647 /* bail because we already have a command pending */ 1648 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", 1649 adapter->current_op); 1650 return -EBUSY; 1651 } 1652 1653 status = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); 1654 if (status) { 1655 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", 1656 iavf_stat_str(hw, status), 1657 libie_aq_str(hw->aq.asq_last_status)); 1658 return iavf_status_to_errno(status); 1659 1660 } 1661 1662 status = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false, 1663 adapter->rss_lut, adapter->rss_lut_size); 1664 if (status) { 1665 dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", 1666 iavf_stat_str(hw, status), 1667 libie_aq_str(hw->aq.asq_last_status)); 1668 return iavf_status_to_errno(status); 1669 } 1670 1671 return 0; 1672 1673 } 1674 1675 /** 1676 * iavf_config_rss_reg - Configure RSS keys and lut by writing registers 1677 * @adapter: board private structure 1678 * 1679 * Returns 0 on success, negative on failure 1680 **/ 1681 static int iavf_config_rss_reg(struct iavf_adapter *adapter) 1682 { 1683 struct iavf_hw *hw = &adapter->hw; 1684 u32 *dw; 1685 u16 i; 1686 1687 dw = (u32 *)adapter->rss_key; 1688 for (i = 0; i < adapter->rss_key_size / 4; i++) 1689 wr32(hw, IAVF_VFQF_HKEY(i), dw[i]); 1690 1691 dw = (u32 *)adapter->rss_lut; 1692 for (i = 0; i < adapter->rss_lut_size / 4; i++) 1693 wr32(hw, IAVF_VFQF_HLUT(i), dw[i]); 1694 1695 iavf_flush(hw); 1696 1697 return 0; 1698 } 1699 1700 /** 1701 * iavf_config_rss - Configure RSS keys and lut 1702 * @adapter: board private structure 1703 * 1704 * Returns 0 on success, negative on failure 1705 **/ 1706 int iavf_config_rss(struct iavf_adapter *adapter) 1707 { 1708 1709 if (RSS_PF(adapter)) { 1710 adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT | 1711 IAVF_FLAG_AQ_SET_RSS_KEY; 1712 return 0; 1713 } else if (RSS_AQ(adapter)) { 1714 return iavf_config_rss_aq(adapter); 1715 } else { 1716 return iavf_config_rss_reg(adapter); 1717 } 1718 } 1719 1720 /** 1721 * iavf_fill_rss_lut - Fill the lut with default values 1722 * @adapter: board private structure 1723 **/ 1724 static void iavf_fill_rss_lut(struct iavf_adapter *adapter) 1725 { 1726 u16 i; 1727 1728 for (i = 0; i < adapter->rss_lut_size; i++) 1729 adapter->rss_lut[i] = i % adapter->num_active_queues; 1730 } 1731 1732 /** 1733 * iavf_init_rss - Prepare for RSS 1734 * @adapter: board private structure 1735 * 1736 * Return 0 on success, negative on failure 1737 **/ 1738 static int iavf_init_rss(struct iavf_adapter *adapter) 1739 { 1740 struct iavf_hw *hw = &adapter->hw; 1741 1742 if (!RSS_PF(adapter)) { 1743 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ 1744 if (adapter->vf_res->vf_cap_flags & 1745 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) 1746 adapter->rss_hashcfg = 1747 IAVF_DEFAULT_RSS_HASHCFG_EXPANDED; 1748 else 1749 adapter->rss_hashcfg = IAVF_DEFAULT_RSS_HASHCFG; 1750 1751 wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->rss_hashcfg); 1752 wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->rss_hashcfg >> 32)); 1753 } 1754 1755 iavf_fill_rss_lut(adapter); 1756 netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); 1757 1758 return iavf_config_rss(adapter); 1759 } 1760 1761 /** 1762 * iavf_alloc_q_vectors - Allocate memory for interrupt vectors 1763 * @adapter: board private structure to initialize 1764 * 1765 * We allocate one q_vector per queue interrupt. If allocation fails we 1766 * return -ENOMEM. 1767 **/ 1768 static int iavf_alloc_q_vectors(struct iavf_adapter *adapter) 1769 { 1770 int q_idx = 0, num_q_vectors, irq_num; 1771 struct iavf_q_vector *q_vector; 1772 1773 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1774 adapter->q_vectors = kzalloc_objs(*q_vector, num_q_vectors); 1775 if (!adapter->q_vectors) 1776 return -ENOMEM; 1777 1778 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1779 irq_num = adapter->msix_entries[q_idx + NONQ_VECS].vector; 1780 q_vector = &adapter->q_vectors[q_idx]; 1781 q_vector->adapter = adapter; 1782 q_vector->vsi = &adapter->vsi; 1783 q_vector->v_idx = q_idx; 1784 q_vector->reg_idx = q_idx; 1785 netif_napi_add_config_locked(adapter->netdev, &q_vector->napi, 1786 iavf_napi_poll, q_idx); 1787 netif_napi_set_irq_locked(&q_vector->napi, irq_num); 1788 } 1789 1790 return 0; 1791 } 1792 1793 /** 1794 * iavf_free_q_vectors - Free memory allocated for interrupt vectors 1795 * @adapter: board private structure to initialize 1796 * 1797 * This function frees the memory allocated to the q_vectors. In addition if 1798 * NAPI is enabled it will delete any references to the NAPI struct prior 1799 * to freeing the q_vector. 1800 **/ 1801 static void iavf_free_q_vectors(struct iavf_adapter *adapter) 1802 { 1803 int q_idx, num_q_vectors; 1804 1805 if (!adapter->q_vectors) 1806 return; 1807 1808 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1809 1810 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1811 struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx]; 1812 1813 netif_napi_del_locked(&q_vector->napi); 1814 } 1815 kfree(adapter->q_vectors); 1816 adapter->q_vectors = NULL; 1817 } 1818 1819 /** 1820 * iavf_reset_interrupt_capability - Reset MSIX setup 1821 * @adapter: board private structure 1822 * 1823 **/ 1824 static void iavf_reset_interrupt_capability(struct iavf_adapter *adapter) 1825 { 1826 if (!adapter->msix_entries) 1827 return; 1828 1829 pci_disable_msix(adapter->pdev); 1830 kfree(adapter->msix_entries); 1831 adapter->msix_entries = NULL; 1832 } 1833 1834 /** 1835 * iavf_init_interrupt_scheme - Determine if MSIX is supported and init 1836 * @adapter: board private structure to initialize 1837 * 1838 **/ 1839 static int iavf_init_interrupt_scheme(struct iavf_adapter *adapter) 1840 { 1841 int err; 1842 1843 err = iavf_alloc_queues(adapter); 1844 if (err) { 1845 dev_err(&adapter->pdev->dev, 1846 "Unable to allocate memory for queues\n"); 1847 goto err_alloc_queues; 1848 } 1849 1850 err = iavf_set_interrupt_capability(adapter); 1851 if (err) { 1852 dev_err(&adapter->pdev->dev, 1853 "Unable to setup interrupt capabilities\n"); 1854 goto err_set_interrupt; 1855 } 1856 1857 err = iavf_alloc_q_vectors(adapter); 1858 if (err) { 1859 dev_err(&adapter->pdev->dev, 1860 "Unable to allocate memory for queue vectors\n"); 1861 goto err_alloc_q_vectors; 1862 } 1863 1864 /* If we've made it so far while ADq flag being ON, then we haven't 1865 * bailed out anywhere in middle. And ADq isn't just enabled but actual 1866 * resources have been allocated in the reset path. 1867 * Now we can truly claim that ADq is enabled. 1868 */ 1869 if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1870 adapter->num_tc) 1871 dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created", 1872 adapter->num_tc); 1873 1874 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", 1875 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", 1876 adapter->num_active_queues); 1877 1878 return 0; 1879 err_alloc_q_vectors: 1880 iavf_reset_interrupt_capability(adapter); 1881 err_set_interrupt: 1882 iavf_free_queues(adapter); 1883 err_alloc_queues: 1884 return err; 1885 } 1886 1887 /** 1888 * iavf_free_interrupt_scheme - Undo what iavf_init_interrupt_scheme does 1889 * @adapter: board private structure 1890 **/ 1891 static void iavf_free_interrupt_scheme(struct iavf_adapter *adapter) 1892 { 1893 iavf_free_q_vectors(adapter); 1894 iavf_reset_interrupt_capability(adapter); 1895 iavf_free_queues(adapter); 1896 } 1897 1898 /** 1899 * iavf_free_rss - Free memory used by RSS structs 1900 * @adapter: board private structure 1901 **/ 1902 static void iavf_free_rss(struct iavf_adapter *adapter) 1903 { 1904 kfree(adapter->rss_key); 1905 adapter->rss_key = NULL; 1906 1907 kfree(adapter->rss_lut); 1908 adapter->rss_lut = NULL; 1909 } 1910 1911 /** 1912 * iavf_reinit_interrupt_scheme - Reallocate queues and vectors 1913 * @adapter: board private structure 1914 * @running: true if adapter->state == __IAVF_RUNNING 1915 * 1916 * Returns 0 on success, negative on failure 1917 **/ 1918 static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter, bool running) 1919 { 1920 struct net_device *netdev = adapter->netdev; 1921 int err; 1922 1923 if (running) 1924 iavf_free_traffic_irqs(adapter); 1925 iavf_free_misc_irq(adapter); 1926 iavf_free_interrupt_scheme(adapter); 1927 1928 err = iavf_init_interrupt_scheme(adapter); 1929 if (err) 1930 goto err; 1931 1932 netif_tx_stop_all_queues(netdev); 1933 1934 err = iavf_request_misc_irq(adapter); 1935 if (err) 1936 goto err; 1937 1938 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1939 1940 iavf_map_rings_to_vectors(adapter); 1941 err: 1942 return err; 1943 } 1944 1945 /** 1946 * iavf_finish_config - do all netdev work that needs RTNL 1947 * @work: our work_struct 1948 * 1949 * Do work that needs RTNL. 1950 */ 1951 static void iavf_finish_config(struct work_struct *work) 1952 { 1953 struct iavf_adapter *adapter; 1954 bool netdev_released = false; 1955 int pairs, err; 1956 1957 adapter = container_of(work, struct iavf_adapter, finish_config); 1958 1959 /* Always take RTNL first to prevent circular lock dependency; 1960 * the dev->lock (== netdev lock) is needed to update the queue number. 1961 */ 1962 rtnl_lock(); 1963 netdev_lock(adapter->netdev); 1964 1965 if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES) && 1966 adapter->netdev->reg_state == NETREG_REGISTERED && 1967 !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 1968 netdev_update_features(adapter->netdev); 1969 adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; 1970 } 1971 1972 switch (adapter->state) { 1973 case __IAVF_DOWN: 1974 /* Set the real number of queues when reset occurs while 1975 * state == __IAVF_DOWN 1976 */ 1977 pairs = adapter->num_active_queues; 1978 netif_set_real_num_rx_queues(adapter->netdev, pairs); 1979 netif_set_real_num_tx_queues(adapter->netdev, pairs); 1980 1981 if (adapter->netdev->reg_state != NETREG_REGISTERED) { 1982 netdev_unlock(adapter->netdev); 1983 netdev_released = true; 1984 err = register_netdevice(adapter->netdev); 1985 if (err) { 1986 dev_err(&adapter->pdev->dev, "Unable to register netdev (%d)\n", 1987 err); 1988 1989 /* go back and try again.*/ 1990 netdev_lock(adapter->netdev); 1991 iavf_free_rss(adapter); 1992 iavf_free_misc_irq(adapter); 1993 iavf_reset_interrupt_capability(adapter); 1994 iavf_change_state(adapter, 1995 __IAVF_INIT_CONFIG_ADAPTER); 1996 netdev_unlock(adapter->netdev); 1997 goto out; 1998 } 1999 } 2000 break; 2001 case __IAVF_RUNNING: 2002 pairs = adapter->num_active_queues; 2003 netif_set_real_num_rx_queues(adapter->netdev, pairs); 2004 netif_set_real_num_tx_queues(adapter->netdev, pairs); 2005 break; 2006 2007 default: 2008 break; 2009 } 2010 2011 out: 2012 if (!netdev_released) 2013 netdev_unlock(adapter->netdev); 2014 rtnl_unlock(); 2015 } 2016 2017 /** 2018 * iavf_schedule_finish_config - Set the flags and schedule a reset event 2019 * @adapter: board private structure 2020 **/ 2021 void iavf_schedule_finish_config(struct iavf_adapter *adapter) 2022 { 2023 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 2024 queue_work(adapter->wq, &adapter->finish_config); 2025 } 2026 2027 /** 2028 * iavf_process_aq_command - process aq_required flags 2029 * and sends aq command 2030 * @adapter: pointer to iavf adapter structure 2031 * 2032 * Returns 0 on success 2033 * Returns error code if no command was sent 2034 * or error code if the command failed. 2035 **/ 2036 static int iavf_process_aq_command(struct iavf_adapter *adapter) 2037 { 2038 if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG) 2039 return iavf_send_vf_config_msg(adapter); 2040 if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS) 2041 return iavf_send_vf_offload_vlan_v2_msg(adapter); 2042 if (adapter->aq_required & IAVF_FLAG_AQ_GET_SUPPORTED_RXDIDS) 2043 return iavf_send_vf_supported_rxdids_msg(adapter); 2044 if (adapter->aq_required & IAVF_FLAG_AQ_GET_PTP_CAPS) 2045 return iavf_send_vf_ptp_caps_msg(adapter); 2046 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) { 2047 iavf_disable_queues(adapter); 2048 return 0; 2049 } 2050 2051 if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) { 2052 iavf_map_queues(adapter); 2053 return 0; 2054 } 2055 2056 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) { 2057 iavf_add_ether_addrs(adapter); 2058 return 0; 2059 } 2060 2061 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) { 2062 iavf_add_vlans(adapter); 2063 return 0; 2064 } 2065 2066 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) { 2067 iavf_del_ether_addrs(adapter); 2068 return 0; 2069 } 2070 2071 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) { 2072 iavf_del_vlans(adapter); 2073 return 0; 2074 } 2075 2076 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) { 2077 iavf_enable_vlan_stripping(adapter); 2078 return 0; 2079 } 2080 2081 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) { 2082 iavf_disable_vlan_stripping(adapter); 2083 return 0; 2084 } 2085 2086 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW) { 2087 iavf_cfg_queues_bw(adapter); 2088 return 0; 2089 } 2090 2091 if (adapter->aq_required & IAVF_FLAG_AQ_GET_QOS_CAPS) { 2092 iavf_get_qos_caps(adapter); 2093 return 0; 2094 } 2095 2096 if (adapter->aq_required & IAVF_FLAG_AQ_CFG_QUEUES_QUANTA_SIZE) { 2097 iavf_cfg_queues_quanta_size(adapter); 2098 return 0; 2099 } 2100 2101 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) { 2102 iavf_configure_queues(adapter); 2103 return 0; 2104 } 2105 2106 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) { 2107 iavf_enable_queues(adapter); 2108 return 0; 2109 } 2110 2111 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) { 2112 /* This message goes straight to the firmware, not the 2113 * PF, so we don't have to set current_op as we will 2114 * not get a response through the ARQ. 2115 */ 2116 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS; 2117 return 0; 2118 } 2119 if (adapter->aq_required & IAVF_FLAG_AQ_GET_RSS_HASHCFG) { 2120 iavf_get_rss_hashcfg(adapter); 2121 return 0; 2122 } 2123 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HASHCFG) { 2124 iavf_set_rss_hashcfg(adapter); 2125 return 0; 2126 } 2127 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) { 2128 iavf_set_rss_key(adapter); 2129 return 0; 2130 } 2131 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) { 2132 iavf_set_rss_lut(adapter); 2133 return 0; 2134 } 2135 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HFUNC) { 2136 iavf_set_rss_hfunc(adapter); 2137 return 0; 2138 } 2139 2140 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE) { 2141 iavf_set_promiscuous(adapter); 2142 return 0; 2143 } 2144 2145 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) { 2146 iavf_enable_channels(adapter); 2147 return 0; 2148 } 2149 2150 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) { 2151 iavf_disable_channels(adapter); 2152 return 0; 2153 } 2154 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) { 2155 iavf_add_cloud_filter(adapter); 2156 return 0; 2157 } 2158 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) { 2159 iavf_del_cloud_filter(adapter); 2160 return 0; 2161 } 2162 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) { 2163 iavf_add_fdir_filter(adapter); 2164 return IAVF_SUCCESS; 2165 } 2166 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) { 2167 iavf_del_fdir_filter(adapter); 2168 return IAVF_SUCCESS; 2169 } 2170 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) { 2171 iavf_add_adv_rss_cfg(adapter); 2172 return 0; 2173 } 2174 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) { 2175 iavf_del_adv_rss_cfg(adapter); 2176 return 0; 2177 } 2178 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) { 2179 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2180 return 0; 2181 } 2182 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) { 2183 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2184 return 0; 2185 } 2186 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) { 2187 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2188 return 0; 2189 } 2190 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) { 2191 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2192 return 0; 2193 } 2194 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) { 2195 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2196 return 0; 2197 } 2198 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) { 2199 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2200 return 0; 2201 } 2202 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) { 2203 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2204 return 0; 2205 } 2206 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) { 2207 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2208 return 0; 2209 } 2210 if (adapter->aq_required & IAVF_FLAG_AQ_SEND_PTP_CMD) { 2211 iavf_virtchnl_send_ptp_cmd(adapter); 2212 return IAVF_SUCCESS; 2213 } 2214 if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) { 2215 iavf_request_stats(adapter); 2216 return 0; 2217 } 2218 2219 return -EAGAIN; 2220 } 2221 2222 /** 2223 * iavf_set_vlan_offload_features - set VLAN offload configuration 2224 * @adapter: board private structure 2225 * @prev_features: previous features used for comparison 2226 * @features: updated features used for configuration 2227 * 2228 * Set the aq_required bit(s) based on the requested features passed in to 2229 * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule 2230 * the watchdog if any changes are requested to expedite the request via 2231 * virtchnl. 2232 **/ 2233 static void 2234 iavf_set_vlan_offload_features(struct iavf_adapter *adapter, 2235 netdev_features_t prev_features, 2236 netdev_features_t features) 2237 { 2238 bool enable_stripping = true, enable_insertion = true; 2239 u16 vlan_ethertype = 0; 2240 u64 aq_required = 0; 2241 2242 /* keep cases separate because one ethertype for offloads can be 2243 * disabled at the same time as another is disabled, so check for an 2244 * enabled ethertype first, then check for disabled. Default to 2245 * ETH_P_8021Q so an ethertype is specified if disabling insertion and 2246 * stripping. 2247 */ 2248 if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2249 vlan_ethertype = ETH_P_8021AD; 2250 else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2251 vlan_ethertype = ETH_P_8021Q; 2252 else if (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2253 vlan_ethertype = ETH_P_8021AD; 2254 else if (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2255 vlan_ethertype = ETH_P_8021Q; 2256 else 2257 vlan_ethertype = ETH_P_8021Q; 2258 2259 if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX))) 2260 enable_stripping = false; 2261 if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX))) 2262 enable_insertion = false; 2263 2264 if (VLAN_ALLOWED(adapter)) { 2265 /* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN 2266 * stripping via virtchnl. VLAN insertion can be toggled on the 2267 * netdev, but it doesn't require a virtchnl message 2268 */ 2269 if (enable_stripping) 2270 aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING; 2271 else 2272 aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING; 2273 2274 } else if (VLAN_V2_ALLOWED(adapter)) { 2275 switch (vlan_ethertype) { 2276 case ETH_P_8021Q: 2277 if (enable_stripping) 2278 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING; 2279 else 2280 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING; 2281 2282 if (enable_insertion) 2283 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION; 2284 else 2285 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION; 2286 break; 2287 case ETH_P_8021AD: 2288 if (enable_stripping) 2289 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING; 2290 else 2291 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING; 2292 2293 if (enable_insertion) 2294 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION; 2295 else 2296 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION; 2297 break; 2298 } 2299 } 2300 2301 if (aq_required) 2302 iavf_schedule_aq_request(adapter, aq_required); 2303 } 2304 2305 /** 2306 * iavf_startup - first step of driver startup 2307 * @adapter: board private structure 2308 * 2309 * Function process __IAVF_STARTUP driver state. 2310 * When success the state is changed to __IAVF_INIT_VERSION_CHECK 2311 * when fails the state is changed to __IAVF_INIT_FAILED 2312 **/ 2313 static void iavf_startup(struct iavf_adapter *adapter) 2314 { 2315 struct pci_dev *pdev = adapter->pdev; 2316 struct iavf_hw *hw = &adapter->hw; 2317 enum iavf_status status; 2318 int ret; 2319 2320 WARN_ON(adapter->state != __IAVF_STARTUP); 2321 2322 /* driver loaded, probe complete */ 2323 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2324 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 2325 2326 ret = iavf_check_reset_complete(hw); 2327 if (ret) { 2328 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", 2329 ret); 2330 goto err; 2331 } 2332 hw->aq.num_arq_entries = IAVF_AQ_LEN; 2333 hw->aq.num_asq_entries = IAVF_AQ_LEN; 2334 hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2335 hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2336 2337 status = iavf_init_adminq(hw); 2338 if (status) { 2339 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", 2340 status); 2341 goto err; 2342 } 2343 ret = iavf_send_api_ver(adapter); 2344 if (ret) { 2345 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", ret); 2346 iavf_shutdown_adminq(hw); 2347 goto err; 2348 } 2349 iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK); 2350 return; 2351 err: 2352 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2353 } 2354 2355 /** 2356 * iavf_init_version_check - second step of driver startup 2357 * @adapter: board private structure 2358 * 2359 * Function process __IAVF_INIT_VERSION_CHECK driver state. 2360 * When success the state is changed to __IAVF_INIT_GET_RESOURCES 2361 * when fails the state is changed to __IAVF_INIT_FAILED 2362 **/ 2363 static void iavf_init_version_check(struct iavf_adapter *adapter) 2364 { 2365 struct pci_dev *pdev = adapter->pdev; 2366 struct iavf_hw *hw = &adapter->hw; 2367 int err = -EAGAIN; 2368 2369 WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK); 2370 2371 if (!iavf_asq_done(hw)) { 2372 dev_err(&pdev->dev, "Admin queue command never completed\n"); 2373 iavf_shutdown_adminq(hw); 2374 iavf_change_state(adapter, __IAVF_STARTUP); 2375 goto err; 2376 } 2377 2378 /* aq msg sent, awaiting reply */ 2379 err = iavf_verify_api_ver(adapter); 2380 if (err) { 2381 if (err == -EALREADY) 2382 err = iavf_send_api_ver(adapter); 2383 else 2384 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", 2385 adapter->pf_version.major, 2386 adapter->pf_version.minor, 2387 VIRTCHNL_VERSION_MAJOR, 2388 VIRTCHNL_VERSION_MINOR); 2389 goto err; 2390 } 2391 err = iavf_send_vf_config_msg(adapter); 2392 if (err) { 2393 dev_err(&pdev->dev, "Unable to send config request (%d)\n", 2394 err); 2395 goto err; 2396 } 2397 iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES); 2398 return; 2399 err: 2400 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2401 } 2402 2403 /** 2404 * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES 2405 * @adapter: board private structure 2406 */ 2407 int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter) 2408 { 2409 int i, num_req_queues = adapter->num_req_queues; 2410 struct iavf_vsi *vsi = &adapter->vsi; 2411 2412 for (i = 0; i < adapter->vf_res->num_vsis; i++) { 2413 if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV) 2414 adapter->vsi_res = &adapter->vf_res->vsi_res[i]; 2415 } 2416 if (!adapter->vsi_res) { 2417 dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); 2418 return -ENODEV; 2419 } 2420 2421 if (num_req_queues && 2422 num_req_queues > adapter->vsi_res->num_queue_pairs) { 2423 /* Problem. The PF gave us fewer queues than what we had 2424 * negotiated in our request. Need a reset to see if we can't 2425 * get back to a working state. 2426 */ 2427 dev_err(&adapter->pdev->dev, 2428 "Requested %d queues, but PF only gave us %d.\n", 2429 num_req_queues, 2430 adapter->vsi_res->num_queue_pairs); 2431 adapter->flags |= IAVF_FLAG_REINIT_MSIX_NEEDED; 2432 adapter->num_req_queues = adapter->vsi_res->num_queue_pairs; 2433 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 2434 2435 return -EAGAIN; 2436 } 2437 adapter->num_req_queues = 0; 2438 adapter->vsi.id = adapter->vsi_res->vsi_id; 2439 2440 adapter->vsi.back = adapter; 2441 adapter->vsi.base_vector = 1; 2442 vsi->netdev = adapter->netdev; 2443 vsi->qs_handle = adapter->vsi_res->qset_handle; 2444 if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) { 2445 adapter->rss_key_size = adapter->vf_res->rss_key_size; 2446 adapter->rss_lut_size = adapter->vf_res->rss_lut_size; 2447 } else { 2448 adapter->rss_key_size = IAVF_HKEY_ARRAY_SIZE; 2449 adapter->rss_lut_size = IAVF_HLUT_ARRAY_SIZE; 2450 } 2451 2452 return 0; 2453 } 2454 2455 /** 2456 * iavf_init_get_resources - third step of driver startup 2457 * @adapter: board private structure 2458 * 2459 * Function process __IAVF_INIT_GET_RESOURCES driver state and 2460 * finishes driver initialization procedure. 2461 * When success the state is changed to __IAVF_DOWN 2462 * when fails the state is changed to __IAVF_INIT_FAILED 2463 **/ 2464 static void iavf_init_get_resources(struct iavf_adapter *adapter) 2465 { 2466 struct pci_dev *pdev = adapter->pdev; 2467 struct iavf_hw *hw = &adapter->hw; 2468 int err; 2469 2470 WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES); 2471 /* aq msg sent, awaiting reply */ 2472 if (!adapter->vf_res) { 2473 adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE, 2474 GFP_KERNEL); 2475 if (!adapter->vf_res) { 2476 err = -ENOMEM; 2477 goto err; 2478 } 2479 } 2480 err = iavf_get_vf_config(adapter); 2481 if (err == -EALREADY) { 2482 err = iavf_send_vf_config_msg(adapter); 2483 goto err; 2484 } else if (err == -EINVAL) { 2485 /* We only get -EINVAL if the device is in a very bad 2486 * state or if we've been disabled for previous bad 2487 * behavior. Either way, we're done now. 2488 */ 2489 iavf_shutdown_adminq(hw); 2490 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); 2491 return; 2492 } 2493 if (err) { 2494 dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err); 2495 goto err_alloc; 2496 } 2497 2498 err = iavf_parse_vf_resource_msg(adapter); 2499 if (err) { 2500 dev_err(&pdev->dev, "Failed to parse VF resource message from PF (%d)\n", 2501 err); 2502 goto err_alloc; 2503 } 2504 /* Some features require additional messages to negotiate extended 2505 * capabilities. These are processed in sequence by the 2506 * __IAVF_INIT_EXTENDED_CAPS driver state. 2507 */ 2508 adapter->extended_caps = IAVF_EXTENDED_CAPS; 2509 2510 iavf_change_state(adapter, __IAVF_INIT_EXTENDED_CAPS); 2511 return; 2512 2513 err_alloc: 2514 kfree(adapter->vf_res); 2515 adapter->vf_res = NULL; 2516 err: 2517 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2518 } 2519 2520 /** 2521 * iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2522 * @adapter: board private structure 2523 * 2524 * Function processes send of the extended VLAN V2 capability message to the 2525 * PF. Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent, 2526 * e.g. due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2. 2527 */ 2528 static void iavf_init_send_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2529 { 2530 int ret; 2531 2532 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2)); 2533 2534 ret = iavf_send_vf_offload_vlan_v2_msg(adapter); 2535 if (ret && ret == -EOPNOTSUPP) { 2536 /* PF does not support VIRTCHNL_VF_OFFLOAD_V2. In this case, 2537 * we did not send the capability exchange message and do not 2538 * expect a response. 2539 */ 2540 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2541 } 2542 2543 /* We sent the message, so move on to the next step */ 2544 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2545 } 2546 2547 /** 2548 * iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2549 * @adapter: board private structure 2550 * 2551 * Function processes receipt of the extended VLAN V2 capability message from 2552 * the PF. 2553 **/ 2554 static void iavf_init_recv_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2555 { 2556 int ret; 2557 2558 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2)); 2559 2560 memset(&adapter->vlan_v2_caps, 0, sizeof(adapter->vlan_v2_caps)); 2561 2562 ret = iavf_get_vf_vlan_v2_caps(adapter); 2563 if (ret) 2564 goto err; 2565 2566 /* We've processed receipt of the VLAN V2 caps message */ 2567 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2568 return; 2569 err: 2570 /* We didn't receive a reply. Make sure we try sending again when 2571 * __IAVF_INIT_FAILED attempts to recover. 2572 */ 2573 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2574 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2575 } 2576 2577 /** 2578 * iavf_init_send_supported_rxdids - part of querying for supported RXDID 2579 * formats 2580 * @adapter: board private structure 2581 * 2582 * Function processes send of the request for supported RXDIDs to the PF. 2583 * Must clear IAVF_EXTENDED_CAP_RECV_RXDID if the message is not sent, e.g. 2584 * due to the PF not negotiating VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. 2585 */ 2586 static void iavf_init_send_supported_rxdids(struct iavf_adapter *adapter) 2587 { 2588 int ret; 2589 2590 ret = iavf_send_vf_supported_rxdids_msg(adapter); 2591 if (ret == -EOPNOTSUPP) { 2592 /* PF does not support VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. In this 2593 * case, we did not send the capability exchange message and 2594 * do not expect a response. 2595 */ 2596 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; 2597 } 2598 2599 /* We sent the message, so move on to the next step */ 2600 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_RXDID; 2601 } 2602 2603 /** 2604 * iavf_init_recv_supported_rxdids - part of querying for supported RXDID 2605 * formats 2606 * @adapter: board private structure 2607 * 2608 * Function processes receipt of the supported RXDIDs message from the PF. 2609 **/ 2610 static void iavf_init_recv_supported_rxdids(struct iavf_adapter *adapter) 2611 { 2612 int ret; 2613 2614 memset(&adapter->supp_rxdids, 0, sizeof(adapter->supp_rxdids)); 2615 2616 ret = iavf_get_vf_supported_rxdids(adapter); 2617 if (ret) 2618 goto err; 2619 2620 /* We've processed the PF response to the 2621 * VIRTCHNL_OP_GET_SUPPORTED_RXDIDS message we sent previously. 2622 */ 2623 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; 2624 return; 2625 2626 err: 2627 /* We didn't receive a reply. Make sure we try sending again when 2628 * __IAVF_INIT_FAILED attempts to recover. 2629 */ 2630 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_RXDID; 2631 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2632 } 2633 2634 /** 2635 * iavf_init_send_ptp_caps - part of querying for extended PTP capabilities 2636 * @adapter: board private structure 2637 * 2638 * Function processes send of the request for 1588 PTP capabilities to the PF. 2639 * Must clear IAVF_EXTENDED_CAP_SEND_PTP if the message is not sent, e.g. 2640 * due to the PF not negotiating VIRTCHNL_VF_PTP_CAP 2641 */ 2642 static void iavf_init_send_ptp_caps(struct iavf_adapter *adapter) 2643 { 2644 if (iavf_send_vf_ptp_caps_msg(adapter) == -EOPNOTSUPP) { 2645 /* PF does not support VIRTCHNL_VF_PTP_CAP. In this case, we 2646 * did not send the capability exchange message and do not 2647 * expect a response. 2648 */ 2649 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; 2650 } 2651 2652 /* We sent the message, so move on to the next step */ 2653 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_PTP; 2654 } 2655 2656 /** 2657 * iavf_init_recv_ptp_caps - part of querying for supported PTP capabilities 2658 * @adapter: board private structure 2659 * 2660 * Function processes receipt of the PTP capabilities supported on this VF. 2661 **/ 2662 static void iavf_init_recv_ptp_caps(struct iavf_adapter *adapter) 2663 { 2664 memset(&adapter->ptp.hw_caps, 0, sizeof(adapter->ptp.hw_caps)); 2665 2666 if (iavf_get_vf_ptp_caps(adapter)) 2667 goto err; 2668 2669 /* We've processed the PF response to the VIRTCHNL_OP_1588_PTP_GET_CAPS 2670 * message we sent previously. 2671 */ 2672 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; 2673 return; 2674 2675 err: 2676 /* We didn't receive a reply. Make sure we try sending again when 2677 * __IAVF_INIT_FAILED attempts to recover. 2678 */ 2679 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_PTP; 2680 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2681 } 2682 2683 /** 2684 * iavf_init_process_extended_caps - Part of driver startup 2685 * @adapter: board private structure 2686 * 2687 * Function processes __IAVF_INIT_EXTENDED_CAPS driver state. This state 2688 * handles negotiating capabilities for features which require an additional 2689 * message. 2690 * 2691 * Once all extended capabilities exchanges are finished, the driver will 2692 * transition into __IAVF_INIT_CONFIG_ADAPTER. 2693 */ 2694 static void iavf_init_process_extended_caps(struct iavf_adapter *adapter) 2695 { 2696 WARN_ON(adapter->state != __IAVF_INIT_EXTENDED_CAPS); 2697 2698 /* Process capability exchange for VLAN V2 */ 2699 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2) { 2700 iavf_init_send_offload_vlan_v2_caps(adapter); 2701 return; 2702 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2) { 2703 iavf_init_recv_offload_vlan_v2_caps(adapter); 2704 return; 2705 } 2706 2707 /* Process capability exchange for RXDID formats */ 2708 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_RXDID) { 2709 iavf_init_send_supported_rxdids(adapter); 2710 return; 2711 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_RXDID) { 2712 iavf_init_recv_supported_rxdids(adapter); 2713 return; 2714 } 2715 2716 /* Process capability exchange for PTP features */ 2717 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_PTP) { 2718 iavf_init_send_ptp_caps(adapter); 2719 return; 2720 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_PTP) { 2721 iavf_init_recv_ptp_caps(adapter); 2722 return; 2723 } 2724 2725 /* When we reach here, no further extended capabilities exchanges are 2726 * necessary, so we finally transition into __IAVF_INIT_CONFIG_ADAPTER 2727 */ 2728 iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER); 2729 } 2730 2731 /** 2732 * iavf_init_config_adapter - last part of driver startup 2733 * @adapter: board private structure 2734 * 2735 * After all the supported capabilities are negotiated, then the 2736 * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization. 2737 */ 2738 static void iavf_init_config_adapter(struct iavf_adapter *adapter) 2739 { 2740 struct net_device *netdev = adapter->netdev; 2741 struct pci_dev *pdev = adapter->pdev; 2742 int err; 2743 2744 WARN_ON(adapter->state != __IAVF_INIT_CONFIG_ADAPTER); 2745 2746 if (iavf_process_config(adapter)) 2747 goto err; 2748 2749 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2750 2751 adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED; 2752 2753 netdev->netdev_ops = &iavf_netdev_ops; 2754 iavf_set_ethtool_ops(netdev); 2755 netdev->watchdog_timeo = 5 * HZ; 2756 2757 netdev->min_mtu = ETH_MIN_MTU; 2758 2759 /* PF/VF API: vf_res->max_mtu is max frame size (not MTU). 2760 * Convert to MTU. 2761 */ 2762 if (!adapter->vf_res->max_mtu) { 2763 netdev->max_mtu = LIBIE_MAX_MTU; 2764 } else if (adapter->vf_res->max_mtu < LIBETH_RX_LL_LEN + ETH_MIN_MTU || 2765 adapter->vf_res->max_mtu > 2766 LIBETH_RX_LL_LEN + LIBIE_MAX_MTU) { 2767 netdev_warn_once(adapter->netdev, 2768 "invalid max frame size %d from PF, using default MTU %d", 2769 adapter->vf_res->max_mtu, LIBIE_MAX_MTU); 2770 netdev->max_mtu = LIBIE_MAX_MTU; 2771 } else { 2772 netdev->max_mtu = adapter->vf_res->max_mtu - LIBETH_RX_LL_LEN; 2773 } 2774 2775 if (!is_valid_ether_addr(adapter->hw.mac.addr)) { 2776 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", 2777 adapter->hw.mac.addr); 2778 eth_hw_addr_random(netdev); 2779 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); 2780 } else { 2781 eth_hw_addr_set(netdev, adapter->hw.mac.addr); 2782 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); 2783 } 2784 2785 adapter->tx_desc_count = IAVF_DEFAULT_TXD; 2786 adapter->rx_desc_count = IAVF_DEFAULT_RXD; 2787 err = iavf_init_interrupt_scheme(adapter); 2788 if (err) 2789 goto err_sw_init; 2790 iavf_map_rings_to_vectors(adapter); 2791 if (adapter->vf_res->vf_cap_flags & 2792 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) 2793 adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE; 2794 2795 err = iavf_request_misc_irq(adapter); 2796 if (err) 2797 goto err_sw_init; 2798 2799 netif_carrier_off(netdev); 2800 adapter->link_up = false; 2801 netif_tx_stop_all_queues(netdev); 2802 2803 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); 2804 if (netdev->features & NETIF_F_GRO) 2805 dev_info(&pdev->dev, "GRO is enabled\n"); 2806 2807 iavf_change_state(adapter, __IAVF_DOWN); 2808 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 2809 2810 iavf_misc_irq_enable(adapter); 2811 wake_up(&adapter->down_waitqueue); 2812 2813 adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); 2814 adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); 2815 if (!adapter->rss_key || !adapter->rss_lut) { 2816 err = -ENOMEM; 2817 goto err_mem; 2818 } 2819 if (RSS_AQ(adapter)) 2820 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 2821 else 2822 iavf_init_rss(adapter); 2823 2824 if (VLAN_V2_ALLOWED(adapter)) 2825 /* request initial VLAN offload settings */ 2826 iavf_set_vlan_offload_features(adapter, 0, netdev->features); 2827 2828 if (QOS_ALLOWED(adapter)) 2829 adapter->aq_required |= IAVF_FLAG_AQ_GET_QOS_CAPS; 2830 2831 /* Setup initial PTP configuration */ 2832 iavf_ptp_init(adapter); 2833 2834 iavf_schedule_finish_config(adapter); 2835 return; 2836 2837 err_mem: 2838 iavf_free_rss(adapter); 2839 iavf_free_misc_irq(adapter); 2840 err_sw_init: 2841 iavf_reset_interrupt_capability(adapter); 2842 err: 2843 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2844 } 2845 2846 static const int IAVF_NO_RESCHED = -1; 2847 2848 /* return: msec delay for requeueing itself */ 2849 static int iavf_watchdog_step(struct iavf_adapter *adapter) 2850 { 2851 struct iavf_hw *hw = &adapter->hw; 2852 u32 reg_val; 2853 2854 netdev_assert_locked(adapter->netdev); 2855 2856 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 2857 iavf_change_state(adapter, __IAVF_COMM_FAILED); 2858 2859 switch (adapter->state) { 2860 case __IAVF_STARTUP: 2861 iavf_startup(adapter); 2862 return 30; 2863 case __IAVF_INIT_VERSION_CHECK: 2864 iavf_init_version_check(adapter); 2865 return 30; 2866 case __IAVF_INIT_GET_RESOURCES: 2867 iavf_init_get_resources(adapter); 2868 return 1; 2869 case __IAVF_INIT_EXTENDED_CAPS: 2870 iavf_init_process_extended_caps(adapter); 2871 return 1; 2872 case __IAVF_INIT_CONFIG_ADAPTER: 2873 iavf_init_config_adapter(adapter); 2874 return 1; 2875 case __IAVF_INIT_FAILED: 2876 if (test_bit(__IAVF_IN_REMOVE_TASK, 2877 &adapter->crit_section)) { 2878 /* Do not update the state and do not reschedule 2879 * watchdog task, iavf_remove should handle this state 2880 * as it can loop forever 2881 */ 2882 return IAVF_NO_RESCHED; 2883 } 2884 if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) { 2885 dev_err(&adapter->pdev->dev, 2886 "Failed to communicate with PF; waiting before retry\n"); 2887 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 2888 iavf_shutdown_adminq(hw); 2889 return 5000; 2890 } 2891 /* Try again from failed step*/ 2892 iavf_change_state(adapter, adapter->last_state); 2893 return 1000; 2894 case __IAVF_COMM_FAILED: 2895 if (test_bit(__IAVF_IN_REMOVE_TASK, 2896 &adapter->crit_section)) { 2897 /* Set state to __IAVF_INIT_FAILED and perform remove 2898 * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task 2899 * doesn't bring the state back to __IAVF_COMM_FAILED. 2900 */ 2901 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2902 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2903 return IAVF_NO_RESCHED; 2904 } 2905 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 2906 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 2907 if (reg_val == VIRTCHNL_VFR_VFACTIVE || 2908 reg_val == VIRTCHNL_VFR_COMPLETED) { 2909 /* A chance for redemption! */ 2910 dev_err(&adapter->pdev->dev, 2911 "Hardware came out of reset. Attempting reinit.\n"); 2912 /* When init task contacts the PF and 2913 * gets everything set up again, it'll restart the 2914 * watchdog for us. Down, boy. Sit. Stay. Woof. 2915 */ 2916 iavf_change_state(adapter, __IAVF_STARTUP); 2917 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2918 } 2919 adapter->aq_required = 0; 2920 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2921 return 10; 2922 case __IAVF_RESETTING: 2923 return 2000; 2924 case __IAVF_DOWN: 2925 case __IAVF_DOWN_PENDING: 2926 case __IAVF_TESTING: 2927 case __IAVF_RUNNING: 2928 if (adapter->current_op) { 2929 if (!iavf_asq_done(hw)) { 2930 dev_dbg(&adapter->pdev->dev, 2931 "Admin queue timeout\n"); 2932 iavf_send_api_ver(adapter); 2933 } 2934 } else { 2935 int ret = iavf_process_aq_command(adapter); 2936 2937 /* An error will be returned if no commands were 2938 * processed; use this opportunity to update stats 2939 * if the error isn't -ENOTSUPP 2940 */ 2941 if (ret && ret != -EOPNOTSUPP && 2942 adapter->state == __IAVF_RUNNING) 2943 iavf_request_stats(adapter); 2944 } 2945 if (adapter->state == __IAVF_RUNNING) 2946 iavf_detect_recover_hung(&adapter->vsi); 2947 break; 2948 case __IAVF_REMOVE: 2949 default: 2950 return IAVF_NO_RESCHED; 2951 } 2952 2953 /* check for hw reset */ 2954 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK; 2955 if (!reg_val) { 2956 adapter->aq_required = 0; 2957 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2958 dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); 2959 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_PENDING); 2960 } 2961 2962 return adapter->aq_required ? 20 : 2000; 2963 } 2964 2965 static void iavf_watchdog_task(struct work_struct *work) 2966 { 2967 struct iavf_adapter *adapter = container_of(work, 2968 struct iavf_adapter, 2969 watchdog_task.work); 2970 struct net_device *netdev = adapter->netdev; 2971 int msec_delay; 2972 2973 netdev_lock(netdev); 2974 msec_delay = iavf_watchdog_step(adapter); 2975 /* note that we schedule a different task */ 2976 if (adapter->state >= __IAVF_DOWN) 2977 queue_work(adapter->wq, &adapter->adminq_task); 2978 2979 if (msec_delay != IAVF_NO_RESCHED) 2980 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 2981 msecs_to_jiffies(msec_delay)); 2982 netdev_unlock(netdev); 2983 } 2984 2985 /** 2986 * iavf_disable_vf - disable VF 2987 * @adapter: board private structure 2988 * 2989 * Set communication failed flag and free all resources. 2990 */ 2991 static void iavf_disable_vf(struct iavf_adapter *adapter) 2992 { 2993 struct iavf_mac_filter *f, *ftmp; 2994 struct iavf_vlan_filter *fv, *fvtmp; 2995 struct iavf_cloud_filter *cf, *cftmp; 2996 2997 netdev_assert_locked(adapter->netdev); 2998 2999 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 3000 3001 iavf_ptp_release(adapter); 3002 3003 /* We don't use netif_running() because it may be true prior to 3004 * ndo_open() returning, so we can't assume it means all our open 3005 * tasks have finished, since we're not holding the rtnl_lock here. 3006 */ 3007 if (adapter->state == __IAVF_RUNNING) { 3008 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3009 netif_carrier_off(adapter->netdev); 3010 netif_tx_disable(adapter->netdev); 3011 adapter->link_up = false; 3012 iavf_napi_disable_all(adapter); 3013 iavf_irq_disable(adapter); 3014 iavf_free_traffic_irqs(adapter); 3015 iavf_free_all_tx_resources(adapter); 3016 iavf_free_all_rx_resources(adapter); 3017 } 3018 3019 spin_lock_bh(&adapter->mac_vlan_list_lock); 3020 3021 /* Delete all of the filters */ 3022 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3023 list_del(&f->list); 3024 kfree(f); 3025 } 3026 3027 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) { 3028 list_del(&fv->list); 3029 kfree(fv); 3030 } 3031 adapter->num_vlan_filters = 0; 3032 3033 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3034 3035 spin_lock_bh(&adapter->cloud_filter_list_lock); 3036 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 3037 list_del(&cf->list); 3038 kfree(cf); 3039 adapter->num_cloud_filters--; 3040 } 3041 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3042 3043 iavf_free_misc_irq(adapter); 3044 iavf_free_interrupt_scheme(adapter); 3045 memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE); 3046 iavf_shutdown_adminq(&adapter->hw); 3047 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 3048 iavf_change_state(adapter, __IAVF_DOWN); 3049 wake_up(&adapter->down_waitqueue); 3050 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); 3051 } 3052 3053 /** 3054 * iavf_reconfig_qs_bw - Call-back task to handle hardware reset 3055 * @adapter: board private structure 3056 * 3057 * After a reset, the shaper parameters of queues need to be replayed again. 3058 * Since the net_shaper object inside TX rings persists across reset, 3059 * set the update flag for all queues so that the virtchnl message is triggered 3060 * for all queues. 3061 **/ 3062 static void iavf_reconfig_qs_bw(struct iavf_adapter *adapter) 3063 { 3064 int i, num = 0; 3065 3066 for (i = 0; i < adapter->num_active_queues; i++) 3067 if (adapter->tx_rings[i].q_shaper.bw_min || 3068 adapter->tx_rings[i].q_shaper.bw_max) { 3069 adapter->tx_rings[i].q_shaper_update = true; 3070 num++; 3071 } 3072 3073 if (num) 3074 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 3075 } 3076 3077 /** 3078 * iavf_reset_step - Perform the VF reset sequence 3079 * @adapter: board private structure 3080 * 3081 * Requests a reset from PF, polls for completion, and reconfigures 3082 * the driver. Caller must hold the netdev instance lock. 3083 * 3084 * This can sleep for several seconds while polling HW registers. 3085 */ 3086 void iavf_reset_step(struct iavf_adapter *adapter) 3087 { 3088 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3089 struct net_device *netdev = adapter->netdev; 3090 struct iavf_hw *hw = &adapter->hw; 3091 struct iavf_mac_filter *f, *ftmp; 3092 struct iavf_cloud_filter *cf; 3093 enum iavf_status status; 3094 u32 reg_val; 3095 int i = 0, err; 3096 bool running; 3097 3098 netdev_assert_locked(netdev); 3099 3100 iavf_misc_irq_disable(adapter); 3101 if (adapter->flags & IAVF_FLAG_RESET_NEEDED) { 3102 adapter->flags &= ~IAVF_FLAG_RESET_NEEDED; 3103 /* Restart the AQ here. If we have been reset but didn't 3104 * detect it, or if the PF had to reinit, our AQ will be hosed. 3105 */ 3106 iavf_shutdown_adminq(hw); 3107 iavf_init_adminq(hw); 3108 iavf_request_reset(adapter); 3109 } 3110 adapter->flags |= IAVF_FLAG_RESET_PENDING; 3111 3112 /* poll until we see the reset actually happen */ 3113 for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) { 3114 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & 3115 IAVF_VF_ARQLEN1_ARQENABLE_MASK; 3116 if (!reg_val) 3117 break; 3118 usleep_range(5000, 10000); 3119 } 3120 if (i == IAVF_RESET_WAIT_DETECTED_COUNT) { 3121 dev_info(&adapter->pdev->dev, "Never saw reset\n"); 3122 goto continue_reset; /* act like the reset happened */ 3123 } 3124 3125 /* wait until the reset is complete and the PF is responding to us */ 3126 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 3127 /* sleep first to make sure a minimum wait time is met */ 3128 msleep(IAVF_RESET_WAIT_MS); 3129 3130 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 3131 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 3132 if (reg_val == VIRTCHNL_VFR_VFACTIVE) 3133 break; 3134 } 3135 3136 pci_set_master(adapter->pdev); 3137 pci_restore_msi_state(adapter->pdev); 3138 3139 if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) { 3140 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", 3141 reg_val); 3142 iavf_disable_vf(adapter); 3143 return; /* Do not attempt to reinit. It's dead, Jim. */ 3144 } 3145 3146 continue_reset: 3147 /* If we are still early in the state machine, just restart. */ 3148 if (adapter->state <= __IAVF_INIT_FAILED) { 3149 iavf_shutdown_adminq(hw); 3150 iavf_change_state(adapter, __IAVF_STARTUP); 3151 iavf_startup(adapter); 3152 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 3153 msecs_to_jiffies(30)); 3154 return; 3155 } 3156 3157 /* We don't use netif_running() because it may be true prior to 3158 * ndo_open() returning, so we can't assume it means all our open 3159 * tasks have finished, since we're not holding the rtnl_lock here. 3160 */ 3161 running = adapter->state == __IAVF_RUNNING; 3162 3163 if (running) { 3164 netif_carrier_off(netdev); 3165 netif_tx_stop_all_queues(netdev); 3166 adapter->link_up = false; 3167 iavf_napi_disable_all(adapter); 3168 } 3169 iavf_irq_disable(adapter); 3170 3171 iavf_change_state(adapter, __IAVF_RESETTING); 3172 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 3173 3174 iavf_ptp_release(adapter); 3175 3176 /* free the Tx/Rx rings and descriptors, might be better to just 3177 * re-use them sometime in the future 3178 */ 3179 iavf_free_all_rx_resources(adapter); 3180 iavf_free_all_tx_resources(adapter); 3181 3182 adapter->flags |= IAVF_FLAG_QUEUES_DISABLED; 3183 /* kill and reinit the admin queue */ 3184 iavf_shutdown_adminq(hw); 3185 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 3186 status = iavf_init_adminq(hw); 3187 if (status) { 3188 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", 3189 status); 3190 goto reset_err; 3191 } 3192 adapter->aq_required = 0; 3193 3194 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3195 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3196 err = iavf_reinit_interrupt_scheme(adapter, running); 3197 if (err) 3198 goto reset_err; 3199 } 3200 3201 if (RSS_AQ(adapter)) { 3202 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 3203 } else { 3204 err = iavf_init_rss(adapter); 3205 if (err) 3206 goto reset_err; 3207 } 3208 3209 adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG; 3210 adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS; 3211 3212 /* Certain capabilities require an extended negotiation process using 3213 * extra messages that must be processed after getting the VF 3214 * configuration. The related checks such as VLAN_V2_ALLOWED() are not 3215 * reliable here, since the configuration has not yet been negotiated. 3216 * 3217 * Always set these flags, since them related VIRTCHNL messages won't 3218 * be sent until after VIRTCHNL_OP_GET_VF_RESOURCES. 3219 */ 3220 adapter->aq_required |= IAVF_FLAG_AQ_EXTENDED_CAPS; 3221 3222 spin_lock_bh(&adapter->mac_vlan_list_lock); 3223 3224 /* Delete filter for the current MAC address, it could have 3225 * been changed by the PF via administratively set MAC. 3226 * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES. 3227 */ 3228 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3229 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) { 3230 list_del(&f->list); 3231 kfree(f); 3232 } 3233 } 3234 /* re-add all MAC filters */ 3235 list_for_each_entry(f, &adapter->mac_filter_list, list) { 3236 f->add = true; 3237 } 3238 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3239 3240 /* check if TCs are running and re-add all cloud filters */ 3241 spin_lock_bh(&adapter->cloud_filter_list_lock); 3242 if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 3243 adapter->num_tc) { 3244 list_for_each_entry(cf, &adapter->cloud_filter_list, list) { 3245 cf->add = true; 3246 } 3247 } 3248 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3249 3250 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 3251 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 3252 iavf_misc_irq_enable(adapter); 3253 3254 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 2); 3255 3256 /* We were running when the reset started, so we need to restore some 3257 * state here. 3258 */ 3259 if (running) { 3260 /* allocate transmit descriptors */ 3261 err = iavf_setup_all_tx_resources(adapter); 3262 if (err) 3263 goto reset_err; 3264 3265 /* allocate receive descriptors */ 3266 err = iavf_setup_all_rx_resources(adapter); 3267 if (err) 3268 goto reset_err; 3269 3270 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3271 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3272 err = iavf_request_traffic_irqs(adapter, netdev->name); 3273 if (err) 3274 goto reset_err; 3275 3276 adapter->flags &= ~IAVF_FLAG_REINIT_MSIX_NEEDED; 3277 } 3278 3279 iavf_configure(adapter); 3280 3281 /* iavf_up_complete() will switch device back 3282 * to __IAVF_RUNNING 3283 */ 3284 iavf_up_complete(adapter); 3285 3286 iavf_irq_enable(adapter, true); 3287 3288 iavf_reconfig_qs_bw(adapter); 3289 } else { 3290 iavf_change_state(adapter, __IAVF_DOWN); 3291 wake_up(&adapter->down_waitqueue); 3292 } 3293 3294 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 3295 3296 return; 3297 reset_err: 3298 if (running) { 3299 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3300 iavf_free_traffic_irqs(adapter); 3301 } 3302 iavf_disable_vf(adapter); 3303 3304 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); 3305 } 3306 3307 static void iavf_reset_task(struct work_struct *work) 3308 { 3309 struct iavf_adapter *adapter = container_of(work, 3310 struct iavf_adapter, 3311 reset_task); 3312 struct net_device *netdev = adapter->netdev; 3313 3314 netdev_lock(netdev); 3315 iavf_reset_step(adapter); 3316 netdev_unlock(netdev); 3317 } 3318 3319 /** 3320 * iavf_adminq_task - worker thread to clean the admin queue 3321 * @work: pointer to work_struct containing our data 3322 **/ 3323 static void iavf_adminq_task(struct work_struct *work) 3324 { 3325 struct iavf_adapter *adapter = 3326 container_of(work, struct iavf_adapter, adminq_task); 3327 struct net_device *netdev = adapter->netdev; 3328 struct iavf_hw *hw = &adapter->hw; 3329 struct iavf_arq_event_info event; 3330 enum virtchnl_ops v_op; 3331 enum iavf_status ret, v_ret; 3332 u32 val, oldval; 3333 u16 pending; 3334 3335 netdev_lock(netdev); 3336 3337 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 3338 goto unlock; 3339 3340 event.buf_len = IAVF_MAX_AQ_BUF_SIZE; 3341 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3342 if (!event.msg_buf) 3343 goto unlock; 3344 3345 do { 3346 ret = iavf_clean_arq_element(hw, &event, &pending); 3347 v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high); 3348 v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low); 3349 3350 if (ret || !v_op) 3351 break; /* No event to process or error cleaning ARQ */ 3352 3353 iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf, 3354 event.msg_len); 3355 if (pending != 0) 3356 memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE); 3357 } while (pending); 3358 3359 if (iavf_is_reset_in_progress(adapter)) 3360 goto freedom; 3361 3362 /* check for error indications */ 3363 val = rd32(hw, IAVF_VF_ARQLEN1); 3364 if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */ 3365 goto freedom; 3366 oldval = val; 3367 if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) { 3368 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); 3369 val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK; 3370 } 3371 if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) { 3372 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); 3373 val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK; 3374 } 3375 if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) { 3376 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); 3377 val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK; 3378 } 3379 if (oldval != val) 3380 wr32(hw, IAVF_VF_ARQLEN1, val); 3381 3382 val = rd32(hw, IAVF_VF_ATQLEN1); 3383 oldval = val; 3384 if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) { 3385 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); 3386 val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK; 3387 } 3388 if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) { 3389 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); 3390 val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK; 3391 } 3392 if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) { 3393 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); 3394 val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK; 3395 } 3396 if (oldval != val) 3397 wr32(hw, IAVF_VF_ATQLEN1, val); 3398 3399 freedom: 3400 kfree(event.msg_buf); 3401 unlock: 3402 netdev_unlock(netdev); 3403 /* re-enable Admin queue interrupt cause */ 3404 iavf_misc_irq_enable(adapter); 3405 } 3406 3407 /** 3408 * iavf_free_all_tx_resources - Free Tx Resources for All Queues 3409 * @adapter: board private structure 3410 * 3411 * Free all transmit software resources 3412 **/ 3413 void iavf_free_all_tx_resources(struct iavf_adapter *adapter) 3414 { 3415 int i; 3416 3417 if (!adapter->tx_rings) 3418 return; 3419 3420 for (i = 0; i < adapter->num_active_queues; i++) 3421 if (adapter->tx_rings[i].desc) 3422 iavf_free_tx_resources(&adapter->tx_rings[i]); 3423 } 3424 3425 /** 3426 * iavf_setup_all_tx_resources - allocate all queues Tx resources 3427 * @adapter: board private structure 3428 * 3429 * If this function returns with an error, then it's possible one or 3430 * more of the rings is populated (while the rest are not). It is the 3431 * callers duty to clean those orphaned rings. 3432 * 3433 * Return 0 on success, negative on failure 3434 **/ 3435 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter) 3436 { 3437 int i, err = 0; 3438 3439 for (i = 0; i < adapter->num_active_queues; i++) { 3440 adapter->tx_rings[i].count = adapter->tx_desc_count; 3441 err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]); 3442 if (!err) 3443 continue; 3444 dev_err(&adapter->pdev->dev, 3445 "Allocation for Tx Queue %u failed\n", i); 3446 break; 3447 } 3448 3449 return err; 3450 } 3451 3452 /** 3453 * iavf_setup_all_rx_resources - allocate all queues Rx resources 3454 * @adapter: board private structure 3455 * 3456 * If this function returns with an error, then it's possible one or 3457 * more of the rings is populated (while the rest are not). It is the 3458 * callers duty to clean those orphaned rings. 3459 * 3460 * Return 0 on success, negative on failure 3461 **/ 3462 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter) 3463 { 3464 int i, err = 0; 3465 3466 for (i = 0; i < adapter->num_active_queues; i++) { 3467 adapter->rx_rings[i].count = adapter->rx_desc_count; 3468 err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]); 3469 if (!err) 3470 continue; 3471 dev_err(&adapter->pdev->dev, 3472 "Allocation for Rx Queue %u failed\n", i); 3473 break; 3474 } 3475 return err; 3476 } 3477 3478 /** 3479 * iavf_free_all_rx_resources - Free Rx Resources for All Queues 3480 * @adapter: board private structure 3481 * 3482 * Free all receive software resources 3483 **/ 3484 void iavf_free_all_rx_resources(struct iavf_adapter *adapter) 3485 { 3486 int i; 3487 3488 if (!adapter->rx_rings) 3489 return; 3490 3491 for (i = 0; i < adapter->num_active_queues; i++) 3492 if (adapter->rx_rings[i].desc) 3493 iavf_free_rx_resources(&adapter->rx_rings[i]); 3494 } 3495 3496 /** 3497 * iavf_validate_tx_bandwidth - validate the max Tx bandwidth 3498 * @adapter: board private structure 3499 * @max_tx_rate: max Tx bw for a tc 3500 **/ 3501 static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter, 3502 u64 max_tx_rate) 3503 { 3504 int speed = 0, ret = 0; 3505 3506 if (ADV_LINK_SUPPORT(adapter)) { 3507 if (adapter->link_speed_mbps < U32_MAX) { 3508 speed = adapter->link_speed_mbps; 3509 goto validate_bw; 3510 } else { 3511 dev_err(&adapter->pdev->dev, "Unknown link speed\n"); 3512 return -EINVAL; 3513 } 3514 } 3515 3516 switch (adapter->link_speed) { 3517 case VIRTCHNL_LINK_SPEED_40GB: 3518 speed = SPEED_40000; 3519 break; 3520 case VIRTCHNL_LINK_SPEED_25GB: 3521 speed = SPEED_25000; 3522 break; 3523 case VIRTCHNL_LINK_SPEED_20GB: 3524 speed = SPEED_20000; 3525 break; 3526 case VIRTCHNL_LINK_SPEED_10GB: 3527 speed = SPEED_10000; 3528 break; 3529 case VIRTCHNL_LINK_SPEED_5GB: 3530 speed = SPEED_5000; 3531 break; 3532 case VIRTCHNL_LINK_SPEED_2_5GB: 3533 speed = SPEED_2500; 3534 break; 3535 case VIRTCHNL_LINK_SPEED_1GB: 3536 speed = SPEED_1000; 3537 break; 3538 case VIRTCHNL_LINK_SPEED_100MB: 3539 speed = SPEED_100; 3540 break; 3541 default: 3542 break; 3543 } 3544 3545 validate_bw: 3546 if (max_tx_rate > speed) { 3547 dev_err(&adapter->pdev->dev, 3548 "Invalid tx rate specified\n"); 3549 ret = -EINVAL; 3550 } 3551 3552 return ret; 3553 } 3554 3555 /** 3556 * iavf_validate_ch_config - validate queue mapping info 3557 * @adapter: board private structure 3558 * @mqprio_qopt: queue parameters 3559 * 3560 * This function validates if the config provided by the user to 3561 * configure queue channels is valid or not. Returns 0 on a valid 3562 * config. 3563 **/ 3564 static int iavf_validate_ch_config(struct iavf_adapter *adapter, 3565 struct tc_mqprio_qopt_offload *mqprio_qopt) 3566 { 3567 u64 total_max_rate = 0; 3568 u32 tx_rate_rem = 0; 3569 int i, num_qps = 0; 3570 u64 tx_rate = 0; 3571 int ret = 0; 3572 3573 if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS || 3574 mqprio_qopt->qopt.num_tc < 1) 3575 return -EINVAL; 3576 3577 for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) { 3578 if (!mqprio_qopt->qopt.count[i] || 3579 mqprio_qopt->qopt.offset[i] != num_qps) 3580 return -EINVAL; 3581 if (mqprio_qopt->min_rate[i]) { 3582 dev_err(&adapter->pdev->dev, 3583 "Invalid min tx rate (greater than 0) specified for TC%d\n", 3584 i); 3585 return -EINVAL; 3586 } 3587 3588 /* convert to Mbps */ 3589 tx_rate = div_u64(mqprio_qopt->max_rate[i], 3590 IAVF_MBPS_DIVISOR); 3591 3592 if (mqprio_qopt->max_rate[i] && 3593 tx_rate < IAVF_MBPS_QUANTA) { 3594 dev_err(&adapter->pdev->dev, 3595 "Invalid max tx rate for TC%d, minimum %dMbps\n", 3596 i, IAVF_MBPS_QUANTA); 3597 return -EINVAL; 3598 } 3599 3600 (void)div_u64_rem(tx_rate, IAVF_MBPS_QUANTA, &tx_rate_rem); 3601 3602 if (tx_rate_rem != 0) { 3603 dev_err(&adapter->pdev->dev, 3604 "Invalid max tx rate for TC%d, not divisible by %d\n", 3605 i, IAVF_MBPS_QUANTA); 3606 return -EINVAL; 3607 } 3608 3609 total_max_rate += tx_rate; 3610 num_qps += mqprio_qopt->qopt.count[i]; 3611 } 3612 if (num_qps > adapter->num_active_queues) { 3613 dev_err(&adapter->pdev->dev, 3614 "Cannot support requested number of queues\n"); 3615 return -EINVAL; 3616 } 3617 3618 ret = iavf_validate_tx_bandwidth(adapter, total_max_rate); 3619 return ret; 3620 } 3621 3622 /** 3623 * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes 3624 * @adapter: board private structure 3625 **/ 3626 static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter) 3627 { 3628 struct iavf_cloud_filter *cf, *cftmp; 3629 3630 spin_lock_bh(&adapter->cloud_filter_list_lock); 3631 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 3632 list) { 3633 list_del(&cf->list); 3634 kfree(cf); 3635 adapter->num_cloud_filters--; 3636 } 3637 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3638 } 3639 3640 /** 3641 * iavf_is_tc_config_same - Compare the mqprio TC config with the 3642 * TC config already configured on this adapter. 3643 * @adapter: board private structure 3644 * @mqprio_qopt: TC config received from kernel. 3645 * 3646 * This function compares the TC config received from the kernel 3647 * with the config already configured on the adapter. 3648 * 3649 * Return: True if configuration is same, false otherwise. 3650 **/ 3651 static bool iavf_is_tc_config_same(struct iavf_adapter *adapter, 3652 struct tc_mqprio_qopt *mqprio_qopt) 3653 { 3654 struct virtchnl_channel_info *ch = &adapter->ch_config.ch_info[0]; 3655 int i; 3656 3657 if (adapter->num_tc != mqprio_qopt->num_tc) 3658 return false; 3659 3660 for (i = 0; i < adapter->num_tc; i++) { 3661 if (ch[i].count != mqprio_qopt->count[i] || 3662 ch[i].offset != mqprio_qopt->offset[i]) 3663 return false; 3664 } 3665 return true; 3666 } 3667 3668 /** 3669 * __iavf_setup_tc - configure multiple traffic classes 3670 * @netdev: network interface device structure 3671 * @type_data: tc offload data 3672 * 3673 * This function processes the config information provided by the 3674 * user to configure traffic classes/queue channels and packages the 3675 * information to request the PF to setup traffic classes. 3676 * 3677 * Returns 0 on success. 3678 **/ 3679 static int __iavf_setup_tc(struct net_device *netdev, void *type_data) 3680 { 3681 struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; 3682 struct iavf_adapter *adapter = netdev_priv(netdev); 3683 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3684 u8 num_tc = 0, total_qps = 0; 3685 int ret = 0, netdev_tc = 0; 3686 u64 max_tx_rate; 3687 u16 mode; 3688 int i; 3689 3690 num_tc = mqprio_qopt->qopt.num_tc; 3691 mode = mqprio_qopt->mode; 3692 3693 /* delete queue_channel */ 3694 if (!mqprio_qopt->qopt.hw) { 3695 if (adapter->ch_config.state == __IAVF_TC_RUNNING) { 3696 /* reset the tc configuration */ 3697 netdev_reset_tc(netdev); 3698 adapter->num_tc = 0; 3699 netif_tx_stop_all_queues(netdev); 3700 netif_tx_disable(netdev); 3701 iavf_del_all_cloud_filters(adapter); 3702 adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS; 3703 total_qps = adapter->orig_num_active_queues; 3704 goto exit; 3705 } else { 3706 return -EINVAL; 3707 } 3708 } 3709 3710 /* add queue channel */ 3711 if (mode == TC_MQPRIO_MODE_CHANNEL) { 3712 if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) { 3713 dev_err(&adapter->pdev->dev, "ADq not supported\n"); 3714 return -EOPNOTSUPP; 3715 } 3716 if (adapter->ch_config.state != __IAVF_TC_INVALID) { 3717 dev_err(&adapter->pdev->dev, "TC configuration already exists\n"); 3718 return -EINVAL; 3719 } 3720 3721 ret = iavf_validate_ch_config(adapter, mqprio_qopt); 3722 if (ret) 3723 return ret; 3724 /* Return if same TC config is requested */ 3725 if (iavf_is_tc_config_same(adapter, &mqprio_qopt->qopt)) 3726 return 0; 3727 adapter->num_tc = num_tc; 3728 3729 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3730 if (i < num_tc) { 3731 adapter->ch_config.ch_info[i].count = 3732 mqprio_qopt->qopt.count[i]; 3733 adapter->ch_config.ch_info[i].offset = 3734 mqprio_qopt->qopt.offset[i]; 3735 total_qps += mqprio_qopt->qopt.count[i]; 3736 max_tx_rate = mqprio_qopt->max_rate[i]; 3737 /* convert to Mbps */ 3738 max_tx_rate = div_u64(max_tx_rate, 3739 IAVF_MBPS_DIVISOR); 3740 adapter->ch_config.ch_info[i].max_tx_rate = 3741 max_tx_rate; 3742 } else { 3743 adapter->ch_config.ch_info[i].count = 1; 3744 adapter->ch_config.ch_info[i].offset = 0; 3745 } 3746 } 3747 3748 /* Take snapshot of original config such as "num_active_queues" 3749 * It is used later when delete ADQ flow is exercised, so that 3750 * once delete ADQ flow completes, VF shall go back to its 3751 * original queue configuration 3752 */ 3753 3754 adapter->orig_num_active_queues = adapter->num_active_queues; 3755 3756 /* Store queue info based on TC so that VF gets configured 3757 * with correct number of queues when VF completes ADQ config 3758 * flow 3759 */ 3760 adapter->ch_config.total_qps = total_qps; 3761 3762 netif_tx_stop_all_queues(netdev); 3763 netif_tx_disable(netdev); 3764 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS; 3765 netdev_reset_tc(netdev); 3766 /* Report the tc mapping up the stack */ 3767 netdev_set_num_tc(adapter->netdev, num_tc); 3768 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3769 u16 qcount = mqprio_qopt->qopt.count[i]; 3770 u16 qoffset = mqprio_qopt->qopt.offset[i]; 3771 3772 if (i < num_tc) 3773 netdev_set_tc_queue(netdev, netdev_tc++, qcount, 3774 qoffset); 3775 } 3776 } 3777 exit: 3778 if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 3779 return 0; 3780 3781 netif_set_real_num_rx_queues(netdev, total_qps); 3782 netif_set_real_num_tx_queues(netdev, total_qps); 3783 3784 return ret; 3785 } 3786 3787 /** 3788 * iavf_parse_cls_flower - Parse tc flower filters provided by kernel 3789 * @adapter: board private structure 3790 * @f: pointer to struct flow_cls_offload 3791 * @filter: pointer to cloud filter structure 3792 */ 3793 static int iavf_parse_cls_flower(struct iavf_adapter *adapter, 3794 struct flow_cls_offload *f, 3795 struct iavf_cloud_filter *filter) 3796 { 3797 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 3798 struct flow_dissector *dissector = rule->match.dissector; 3799 u16 n_proto_mask = 0; 3800 u16 n_proto_key = 0; 3801 u8 field_flags = 0; 3802 u16 addr_type = 0; 3803 u16 n_proto = 0; 3804 int i = 0; 3805 struct virtchnl_filter *vf = &filter->f; 3806 3807 if (dissector->used_keys & 3808 ~(BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) | 3809 BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) | 3810 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 3811 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) | 3812 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 3813 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 3814 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) | 3815 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID))) { 3816 dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%llx\n", 3817 dissector->used_keys); 3818 return -EOPNOTSUPP; 3819 } 3820 3821 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 3822 struct flow_match_enc_keyid match; 3823 3824 flow_rule_match_enc_keyid(rule, &match); 3825 if (match.mask->keyid != 0) 3826 field_flags |= IAVF_CLOUD_FIELD_TEN_ID; 3827 } 3828 3829 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 3830 struct flow_match_basic match; 3831 3832 flow_rule_match_basic(rule, &match); 3833 n_proto_key = ntohs(match.key->n_proto); 3834 n_proto_mask = ntohs(match.mask->n_proto); 3835 3836 if (n_proto_key == ETH_P_ALL) { 3837 n_proto_key = 0; 3838 n_proto_mask = 0; 3839 } 3840 n_proto = n_proto_key & n_proto_mask; 3841 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) 3842 return -EINVAL; 3843 if (n_proto == ETH_P_IPV6) { 3844 /* specify flow type as TCP IPv6 */ 3845 vf->flow_type = VIRTCHNL_TCP_V6_FLOW; 3846 } 3847 3848 if (match.key->ip_proto != IPPROTO_TCP) { 3849 dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n"); 3850 return -EINVAL; 3851 } 3852 } 3853 3854 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 3855 struct flow_match_eth_addrs match; 3856 3857 flow_rule_match_eth_addrs(rule, &match); 3858 3859 /* use is_broadcast and is_zero to check for all 0xf or 0 */ 3860 if (!is_zero_ether_addr(match.mask->dst)) { 3861 if (is_broadcast_ether_addr(match.mask->dst)) { 3862 field_flags |= IAVF_CLOUD_FIELD_OMAC; 3863 } else { 3864 dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n", 3865 match.mask->dst); 3866 return -EINVAL; 3867 } 3868 } 3869 3870 if (!is_zero_ether_addr(match.mask->src)) { 3871 if (is_broadcast_ether_addr(match.mask->src)) { 3872 field_flags |= IAVF_CLOUD_FIELD_IMAC; 3873 } else { 3874 dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n", 3875 match.mask->src); 3876 return -EINVAL; 3877 } 3878 } 3879 3880 if (!is_zero_ether_addr(match.key->dst)) 3881 if (is_valid_ether_addr(match.key->dst) || 3882 is_multicast_ether_addr(match.key->dst)) { 3883 /* set the mask if a valid dst_mac address */ 3884 for (i = 0; i < ETH_ALEN; i++) 3885 vf->mask.tcp_spec.dst_mac[i] |= 0xff; 3886 ether_addr_copy(vf->data.tcp_spec.dst_mac, 3887 match.key->dst); 3888 } 3889 3890 if (!is_zero_ether_addr(match.key->src)) 3891 if (is_valid_ether_addr(match.key->src) || 3892 is_multicast_ether_addr(match.key->src)) { 3893 /* set the mask if a valid dst_mac address */ 3894 for (i = 0; i < ETH_ALEN; i++) 3895 vf->mask.tcp_spec.src_mac[i] |= 0xff; 3896 ether_addr_copy(vf->data.tcp_spec.src_mac, 3897 match.key->src); 3898 } 3899 } 3900 3901 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 3902 struct flow_match_vlan match; 3903 3904 flow_rule_match_vlan(rule, &match); 3905 if (match.mask->vlan_id) { 3906 if (match.mask->vlan_id == VLAN_VID_MASK) { 3907 field_flags |= IAVF_CLOUD_FIELD_IVLAN; 3908 } else { 3909 dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n", 3910 match.mask->vlan_id); 3911 return -EINVAL; 3912 } 3913 } 3914 vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff); 3915 vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id); 3916 } 3917 3918 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 3919 struct flow_match_control match; 3920 3921 flow_rule_match_control(rule, &match); 3922 addr_type = match.key->addr_type; 3923 3924 if (flow_rule_has_control_flags(match.mask->flags, 3925 f->common.extack)) 3926 return -EOPNOTSUPP; 3927 } 3928 3929 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 3930 struct flow_match_ipv4_addrs match; 3931 3932 flow_rule_match_ipv4_addrs(rule, &match); 3933 if (match.mask->dst) { 3934 if (match.mask->dst == cpu_to_be32(0xffffffff)) { 3935 field_flags |= IAVF_CLOUD_FIELD_IIP; 3936 } else { 3937 dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n", 3938 be32_to_cpu(match.mask->dst)); 3939 return -EINVAL; 3940 } 3941 } 3942 3943 if (match.mask->src) { 3944 if (match.mask->src == cpu_to_be32(0xffffffff)) { 3945 field_flags |= IAVF_CLOUD_FIELD_IIP; 3946 } else { 3947 dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n", 3948 be32_to_cpu(match.mask->src)); 3949 return -EINVAL; 3950 } 3951 } 3952 3953 if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) { 3954 dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n"); 3955 return -EINVAL; 3956 } 3957 if (match.key->dst) { 3958 vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff); 3959 vf->data.tcp_spec.dst_ip[0] = match.key->dst; 3960 } 3961 if (match.key->src) { 3962 vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff); 3963 vf->data.tcp_spec.src_ip[0] = match.key->src; 3964 } 3965 } 3966 3967 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 3968 struct flow_match_ipv6_addrs match; 3969 3970 flow_rule_match_ipv6_addrs(rule, &match); 3971 3972 /* validate mask, make sure it is not IPV6_ADDR_ANY */ 3973 if (ipv6_addr_any(&match.mask->dst)) { 3974 dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n", 3975 IPV6_ADDR_ANY); 3976 return -EINVAL; 3977 } 3978 3979 /* src and dest IPv6 address should not be LOOPBACK 3980 * (0:0:0:0:0:0:0:1) which can be represented as ::1 3981 */ 3982 if (ipv6_addr_loopback(&match.key->dst) || 3983 ipv6_addr_loopback(&match.key->src)) { 3984 dev_err(&adapter->pdev->dev, 3985 "ipv6 addr should not be loopback\n"); 3986 return -EINVAL; 3987 } 3988 if (!ipv6_addr_any(&match.mask->dst) || 3989 !ipv6_addr_any(&match.mask->src)) 3990 field_flags |= IAVF_CLOUD_FIELD_IIP; 3991 3992 for (i = 0; i < 4; i++) 3993 vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff); 3994 memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32, 3995 sizeof(vf->data.tcp_spec.dst_ip)); 3996 for (i = 0; i < 4; i++) 3997 vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff); 3998 memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32, 3999 sizeof(vf->data.tcp_spec.src_ip)); 4000 } 4001 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 4002 struct flow_match_ports match; 4003 4004 flow_rule_match_ports(rule, &match); 4005 if (match.mask->src) { 4006 if (match.mask->src == cpu_to_be16(0xffff)) { 4007 field_flags |= IAVF_CLOUD_FIELD_IIP; 4008 } else { 4009 dev_err(&adapter->pdev->dev, "Bad src port mask %u\n", 4010 be16_to_cpu(match.mask->src)); 4011 return -EINVAL; 4012 } 4013 } 4014 4015 if (match.mask->dst) { 4016 if (match.mask->dst == cpu_to_be16(0xffff)) { 4017 field_flags |= IAVF_CLOUD_FIELD_IIP; 4018 } else { 4019 dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n", 4020 be16_to_cpu(match.mask->dst)); 4021 return -EINVAL; 4022 } 4023 } 4024 if (match.key->dst) { 4025 vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff); 4026 vf->data.tcp_spec.dst_port = match.key->dst; 4027 } 4028 4029 if (match.key->src) { 4030 vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff); 4031 vf->data.tcp_spec.src_port = match.key->src; 4032 } 4033 } 4034 vf->field_flags = field_flags; 4035 4036 return 0; 4037 } 4038 4039 /** 4040 * iavf_handle_tclass - Forward to a traffic class on the device 4041 * @adapter: board private structure 4042 * @tc: traffic class index on the device 4043 * @filter: pointer to cloud filter structure 4044 */ 4045 static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc, 4046 struct iavf_cloud_filter *filter) 4047 { 4048 if (tc == 0) 4049 return 0; 4050 if (tc < adapter->num_tc) { 4051 if (!filter->f.data.tcp_spec.dst_port) { 4052 dev_err(&adapter->pdev->dev, 4053 "Specify destination port to redirect to traffic class other than TC0\n"); 4054 return -EINVAL; 4055 } 4056 } 4057 /* redirect to a traffic class on the same device */ 4058 filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT; 4059 filter->f.action_meta = tc; 4060 return 0; 4061 } 4062 4063 /** 4064 * iavf_find_cf - Find the cloud filter in the list 4065 * @adapter: Board private structure 4066 * @cookie: filter specific cookie 4067 * 4068 * Returns ptr to the filter object or NULL. Must be called while holding the 4069 * cloud_filter_list_lock. 4070 */ 4071 static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter, 4072 unsigned long *cookie) 4073 { 4074 struct iavf_cloud_filter *filter = NULL; 4075 4076 if (!cookie) 4077 return NULL; 4078 4079 list_for_each_entry(filter, &adapter->cloud_filter_list, list) { 4080 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie))) 4081 return filter; 4082 } 4083 return NULL; 4084 } 4085 4086 /** 4087 * iavf_configure_clsflower - Add tc flower filters 4088 * @adapter: board private structure 4089 * @cls_flower: Pointer to struct flow_cls_offload 4090 */ 4091 static int iavf_configure_clsflower(struct iavf_adapter *adapter, 4092 struct flow_cls_offload *cls_flower) 4093 { 4094 int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid); 4095 struct iavf_cloud_filter *filter; 4096 int err; 4097 4098 if (tc < 0) { 4099 dev_err(&adapter->pdev->dev, "Invalid traffic class\n"); 4100 return -EINVAL; 4101 } 4102 4103 filter = kzalloc_obj(*filter); 4104 if (!filter) 4105 return -ENOMEM; 4106 filter->cookie = cls_flower->cookie; 4107 4108 netdev_lock(adapter->netdev); 4109 4110 /* bail out here if filter already exists */ 4111 spin_lock_bh(&adapter->cloud_filter_list_lock); 4112 if (iavf_find_cf(adapter, &cls_flower->cookie)) { 4113 dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n"); 4114 err = -EEXIST; 4115 goto spin_unlock; 4116 } 4117 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4118 4119 /* set the mask to all zeroes to begin with */ 4120 memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec)); 4121 /* start out with flow type and eth type IPv4 to begin with */ 4122 filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW; 4123 err = iavf_parse_cls_flower(adapter, cls_flower, filter); 4124 if (err) 4125 goto err; 4126 4127 err = iavf_handle_tclass(adapter, tc, filter); 4128 if (err) 4129 goto err; 4130 4131 /* add filter to the list */ 4132 spin_lock_bh(&adapter->cloud_filter_list_lock); 4133 list_add_tail(&filter->list, &adapter->cloud_filter_list); 4134 adapter->num_cloud_filters++; 4135 filter->add = true; 4136 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 4137 spin_unlock: 4138 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4139 err: 4140 if (err) 4141 kfree(filter); 4142 4143 netdev_unlock(adapter->netdev); 4144 return err; 4145 } 4146 4147 /** 4148 * iavf_delete_clsflower - Remove tc flower filters 4149 * @adapter: board private structure 4150 * @cls_flower: Pointer to struct flow_cls_offload 4151 */ 4152 static int iavf_delete_clsflower(struct iavf_adapter *adapter, 4153 struct flow_cls_offload *cls_flower) 4154 { 4155 struct iavf_cloud_filter *filter = NULL; 4156 int err = 0; 4157 4158 spin_lock_bh(&adapter->cloud_filter_list_lock); 4159 filter = iavf_find_cf(adapter, &cls_flower->cookie); 4160 if (filter) { 4161 filter->del = true; 4162 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 4163 } else { 4164 err = -EINVAL; 4165 } 4166 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4167 4168 return err; 4169 } 4170 4171 /** 4172 * iavf_setup_tc_cls_flower - flower classifier offloads 4173 * @adapter: pointer to iavf adapter structure 4174 * @cls_flower: pointer to flow_cls_offload struct with flow info 4175 */ 4176 static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter, 4177 struct flow_cls_offload *cls_flower) 4178 { 4179 switch (cls_flower->command) { 4180 case FLOW_CLS_REPLACE: 4181 return iavf_configure_clsflower(adapter, cls_flower); 4182 case FLOW_CLS_DESTROY: 4183 return iavf_delete_clsflower(adapter, cls_flower); 4184 case FLOW_CLS_STATS: 4185 return -EOPNOTSUPP; 4186 default: 4187 return -EOPNOTSUPP; 4188 } 4189 } 4190 4191 /** 4192 * iavf_add_cls_u32 - Add U32 classifier offloads 4193 * @adapter: pointer to iavf adapter structure 4194 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4195 * 4196 * Return: 0 on success or negative errno on failure. 4197 */ 4198 static int iavf_add_cls_u32(struct iavf_adapter *adapter, 4199 struct tc_cls_u32_offload *cls_u32) 4200 { 4201 struct netlink_ext_ack *extack = cls_u32->common.extack; 4202 struct virtchnl_fdir_rule *rule_cfg; 4203 struct virtchnl_filter_action *vact; 4204 struct virtchnl_proto_hdrs *hdrs; 4205 struct ethhdr *spec_h, *mask_h; 4206 const struct tc_action *act; 4207 struct iavf_fdir_fltr *fltr; 4208 struct tcf_exts *exts; 4209 unsigned int q_index; 4210 int i, status = 0; 4211 int off_base = 0; 4212 4213 if (cls_u32->knode.link_handle) { 4214 NL_SET_ERR_MSG_MOD(extack, "Linking not supported"); 4215 return -EOPNOTSUPP; 4216 } 4217 4218 fltr = kzalloc_obj(*fltr); 4219 if (!fltr) 4220 return -ENOMEM; 4221 4222 rule_cfg = &fltr->vc_add_msg.rule_cfg; 4223 hdrs = &rule_cfg->proto_hdrs; 4224 hdrs->count = 0; 4225 4226 /* The parser lib at the PF expects the packet starting with MAC hdr */ 4227 switch (ntohs(cls_u32->common.protocol)) { 4228 case ETH_P_802_3: 4229 break; 4230 case ETH_P_IP: 4231 spec_h = (struct ethhdr *)hdrs->raw.spec; 4232 mask_h = (struct ethhdr *)hdrs->raw.mask; 4233 spec_h->h_proto = htons(ETH_P_IP); 4234 mask_h->h_proto = htons(0xFFFF); 4235 off_base += ETH_HLEN; 4236 break; 4237 default: 4238 NL_SET_ERR_MSG_MOD(extack, "Only 802_3 and ip filter protocols are supported"); 4239 status = -EOPNOTSUPP; 4240 goto free_alloc; 4241 } 4242 4243 for (i = 0; i < cls_u32->knode.sel->nkeys; i++) { 4244 __be32 val, mask; 4245 int off; 4246 4247 off = off_base + cls_u32->knode.sel->keys[i].off; 4248 val = cls_u32->knode.sel->keys[i].val; 4249 mask = cls_u32->knode.sel->keys[i].mask; 4250 4251 if (off >= sizeof(hdrs->raw.spec)) { 4252 NL_SET_ERR_MSG_MOD(extack, "Input exceeds maximum allowed."); 4253 status = -EINVAL; 4254 goto free_alloc; 4255 } 4256 4257 memcpy(&hdrs->raw.spec[off], &val, sizeof(val)); 4258 memcpy(&hdrs->raw.mask[off], &mask, sizeof(mask)); 4259 hdrs->raw.pkt_len = off + sizeof(val); 4260 } 4261 4262 /* Only one action is allowed */ 4263 rule_cfg->action_set.count = 1; 4264 vact = &rule_cfg->action_set.actions[0]; 4265 exts = cls_u32->knode.exts; 4266 4267 tcf_exts_for_each_action(i, act, exts) { 4268 /* FDIR queue */ 4269 if (is_tcf_skbedit_rx_queue_mapping(act)) { 4270 q_index = tcf_skbedit_rx_queue_mapping(act); 4271 if (q_index >= adapter->num_active_queues) { 4272 status = -EINVAL; 4273 goto free_alloc; 4274 } 4275 4276 vact->type = VIRTCHNL_ACTION_QUEUE; 4277 vact->act_conf.queue.index = q_index; 4278 break; 4279 } 4280 4281 /* Drop */ 4282 if (is_tcf_gact_shot(act)) { 4283 vact->type = VIRTCHNL_ACTION_DROP; 4284 break; 4285 } 4286 4287 /* Unsupported action */ 4288 NL_SET_ERR_MSG_MOD(extack, "Unsupported action."); 4289 status = -EOPNOTSUPP; 4290 goto free_alloc; 4291 } 4292 4293 fltr->vc_add_msg.vsi_id = adapter->vsi.id; 4294 fltr->cls_u32_handle = cls_u32->knode.handle; 4295 return iavf_fdir_add_fltr(adapter, fltr); 4296 4297 free_alloc: 4298 kfree(fltr); 4299 return status; 4300 } 4301 4302 /** 4303 * iavf_del_cls_u32 - Delete U32 classifier offloads 4304 * @adapter: pointer to iavf adapter structure 4305 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4306 * 4307 * Return: 0 on success or negative errno on failure. 4308 */ 4309 static int iavf_del_cls_u32(struct iavf_adapter *adapter, 4310 struct tc_cls_u32_offload *cls_u32) 4311 { 4312 return iavf_fdir_del_fltr(adapter, true, cls_u32->knode.handle); 4313 } 4314 4315 /** 4316 * iavf_setup_tc_cls_u32 - U32 filter offloads 4317 * @adapter: pointer to iavf adapter structure 4318 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4319 * 4320 * Return: 0 on success or negative errno on failure. 4321 */ 4322 static int iavf_setup_tc_cls_u32(struct iavf_adapter *adapter, 4323 struct tc_cls_u32_offload *cls_u32) 4324 { 4325 if (!TC_U32_SUPPORT(adapter) || !FDIR_FLTR_SUPPORT(adapter)) 4326 return -EOPNOTSUPP; 4327 4328 switch (cls_u32->command) { 4329 case TC_CLSU32_NEW_KNODE: 4330 case TC_CLSU32_REPLACE_KNODE: 4331 return iavf_add_cls_u32(adapter, cls_u32); 4332 case TC_CLSU32_DELETE_KNODE: 4333 return iavf_del_cls_u32(adapter, cls_u32); 4334 default: 4335 return -EOPNOTSUPP; 4336 } 4337 } 4338 4339 /** 4340 * iavf_setup_tc_block_cb - block callback for tc 4341 * @type: type of offload 4342 * @type_data: offload data 4343 * @cb_priv: 4344 * 4345 * This function is the block callback for traffic classes 4346 **/ 4347 static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 4348 void *cb_priv) 4349 { 4350 struct iavf_adapter *adapter = cb_priv; 4351 4352 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 4353 return -EOPNOTSUPP; 4354 4355 switch (type) { 4356 case TC_SETUP_CLSFLOWER: 4357 return iavf_setup_tc_cls_flower(cb_priv, type_data); 4358 case TC_SETUP_CLSU32: 4359 return iavf_setup_tc_cls_u32(cb_priv, type_data); 4360 default: 4361 return -EOPNOTSUPP; 4362 } 4363 } 4364 4365 static LIST_HEAD(iavf_block_cb_list); 4366 4367 /** 4368 * iavf_setup_tc - configure multiple traffic classes 4369 * @netdev: network interface device structure 4370 * @type: type of offload 4371 * @type_data: tc offload data 4372 * 4373 * This function is the callback to ndo_setup_tc in the 4374 * netdev_ops. 4375 * 4376 * Returns 0 on success 4377 **/ 4378 static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, 4379 void *type_data) 4380 { 4381 struct iavf_adapter *adapter = netdev_priv(netdev); 4382 4383 switch (type) { 4384 case TC_SETUP_QDISC_MQPRIO: 4385 return __iavf_setup_tc(netdev, type_data); 4386 case TC_SETUP_BLOCK: 4387 return flow_block_cb_setup_simple(type_data, 4388 &iavf_block_cb_list, 4389 iavf_setup_tc_block_cb, 4390 adapter, adapter, true); 4391 default: 4392 return -EOPNOTSUPP; 4393 } 4394 } 4395 4396 /** 4397 * iavf_restore_fdir_filters 4398 * @adapter: board private structure 4399 * 4400 * Restore existing FDIR filters when VF netdev comes back up. 4401 **/ 4402 static void iavf_restore_fdir_filters(struct iavf_adapter *adapter) 4403 { 4404 struct iavf_fdir_fltr *f; 4405 4406 spin_lock_bh(&adapter->fdir_fltr_lock); 4407 list_for_each_entry(f, &adapter->fdir_list_head, list) { 4408 if (f->state == IAVF_FDIR_FLTR_DIS_REQUEST) { 4409 /* Cancel a request, keep filter as active */ 4410 f->state = IAVF_FDIR_FLTR_ACTIVE; 4411 } else if (f->state == IAVF_FDIR_FLTR_DIS_PENDING || 4412 f->state == IAVF_FDIR_FLTR_INACTIVE) { 4413 /* Add filters which are inactive or have a pending 4414 * request to PF to be deleted 4415 */ 4416 f->state = IAVF_FDIR_FLTR_ADD_REQUEST; 4417 adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER; 4418 } 4419 } 4420 spin_unlock_bh(&adapter->fdir_fltr_lock); 4421 } 4422 4423 /** 4424 * iavf_open - Called when a network interface is made active 4425 * @netdev: network interface device structure 4426 * 4427 * Returns 0 on success, negative value on failure 4428 * 4429 * The open entry point is called when a network interface is made 4430 * active by the system (IFF_UP). At this point all resources needed 4431 * for transmit and receive operations are allocated, the interrupt 4432 * handler is registered with the OS, the watchdog is started, 4433 * and the stack is notified that the interface is ready. 4434 **/ 4435 static int iavf_open(struct net_device *netdev) 4436 { 4437 struct iavf_adapter *adapter = netdev_priv(netdev); 4438 int err; 4439 4440 netdev_assert_locked(netdev); 4441 4442 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) { 4443 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); 4444 return -EIO; 4445 } 4446 4447 if (adapter->state != __IAVF_DOWN) 4448 return -EBUSY; 4449 4450 if (adapter->state == __IAVF_RUNNING && 4451 !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) { 4452 dev_dbg(&adapter->pdev->dev, "VF is already open.\n"); 4453 return 0; 4454 } 4455 4456 /* allocate transmit descriptors */ 4457 err = iavf_setup_all_tx_resources(adapter); 4458 if (err) 4459 goto err_setup_tx; 4460 4461 /* allocate receive descriptors */ 4462 err = iavf_setup_all_rx_resources(adapter); 4463 if (err) 4464 goto err_setup_rx; 4465 4466 /* clear any pending interrupts, may auto mask */ 4467 err = iavf_request_traffic_irqs(adapter, netdev->name); 4468 if (err) 4469 goto err_req_irq; 4470 4471 spin_lock_bh(&adapter->mac_vlan_list_lock); 4472 iavf_add_filter(adapter, adapter->hw.mac.addr); 4473 spin_unlock_bh(&adapter->mac_vlan_list_lock); 4474 4475 iavf_restore_fdir_filters(adapter); 4476 4477 iavf_configure(adapter); 4478 4479 iavf_up_complete(adapter); 4480 4481 iavf_irq_enable(adapter, true); 4482 4483 return 0; 4484 4485 err_req_irq: 4486 iavf_down(adapter); 4487 iavf_free_traffic_irqs(adapter); 4488 err_setup_rx: 4489 iavf_free_all_rx_resources(adapter); 4490 err_setup_tx: 4491 iavf_free_all_tx_resources(adapter); 4492 4493 return err; 4494 } 4495 4496 /** 4497 * iavf_close - Disables a network interface 4498 * @netdev: network interface device structure 4499 * 4500 * Returns 0, this is not allowed to fail 4501 * 4502 * The close entry point is called when an interface is de-activated 4503 * by the OS. The hardware is still under the drivers control, but 4504 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) 4505 * are freed, along with all transmit and receive resources. 4506 **/ 4507 static int iavf_close(struct net_device *netdev) 4508 { 4509 struct iavf_adapter *adapter = netdev_priv(netdev); 4510 u64 aq_to_restore; 4511 int status; 4512 4513 netdev_assert_locked(netdev); 4514 4515 if (adapter->state <= __IAVF_DOWN_PENDING) 4516 return 0; 4517 4518 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 4519 /* We cannot send IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS before 4520 * IAVF_FLAG_AQ_DISABLE_QUEUES because in such case there is rtnl 4521 * deadlock with adminq_task() until iavf_close timeouts. We must send 4522 * IAVF_FLAG_AQ_GET_CONFIG before IAVF_FLAG_AQ_DISABLE_QUEUES to make 4523 * disable queues possible for vf. Give only necessary flags to 4524 * iavf_down and save other to set them right before iavf_close() 4525 * returns, when IAVF_FLAG_AQ_DISABLE_QUEUES will be already sent and 4526 * iavf will be in DOWN state. 4527 */ 4528 aq_to_restore = adapter->aq_required; 4529 adapter->aq_required &= IAVF_FLAG_AQ_GET_CONFIG; 4530 4531 /* Remove flags which we do not want to send after close or we want to 4532 * send before disable queues. 4533 */ 4534 aq_to_restore &= ~(IAVF_FLAG_AQ_GET_CONFIG | 4535 IAVF_FLAG_AQ_ENABLE_QUEUES | 4536 IAVF_FLAG_AQ_CONFIGURE_QUEUES | 4537 IAVF_FLAG_AQ_ADD_VLAN_FILTER | 4538 IAVF_FLAG_AQ_ADD_MAC_FILTER | 4539 IAVF_FLAG_AQ_ADD_CLOUD_FILTER | 4540 IAVF_FLAG_AQ_ADD_FDIR_FILTER | 4541 IAVF_FLAG_AQ_ADD_ADV_RSS_CFG); 4542 4543 iavf_down(adapter); 4544 iavf_change_state(adapter, __IAVF_DOWN_PENDING); 4545 iavf_free_traffic_irqs(adapter); 4546 4547 netdev_unlock(netdev); 4548 4549 /* We explicitly don't free resources here because the hardware is 4550 * still active and can DMA into memory. Resources are cleared in 4551 * iavf_virtchnl_completion() after we get confirmation from the PF 4552 * driver that the rings have been stopped. 4553 * 4554 * Also, we wait for state to transition to __IAVF_DOWN before 4555 * returning. State change occurs in iavf_virtchnl_completion() after 4556 * VF resources are released (which occurs after PF driver processes and 4557 * responds to admin queue commands). 4558 */ 4559 4560 status = wait_event_timeout(adapter->down_waitqueue, 4561 adapter->state == __IAVF_DOWN, 4562 msecs_to_jiffies(500)); 4563 if (!status) 4564 netdev_warn(netdev, "Device resources not yet released\n"); 4565 netdev_lock(netdev); 4566 4567 adapter->aq_required |= aq_to_restore; 4568 4569 return 0; 4570 } 4571 4572 /** 4573 * iavf_change_mtu - Change the Maximum Transfer Unit 4574 * @netdev: network interface device structure 4575 * @new_mtu: new value for maximum frame size 4576 * 4577 * Returns 0 on success, negative on failure 4578 **/ 4579 static int iavf_change_mtu(struct net_device *netdev, int new_mtu) 4580 { 4581 struct iavf_adapter *adapter = netdev_priv(netdev); 4582 4583 netdev_dbg(netdev, "changing MTU from %d to %d\n", 4584 netdev->mtu, new_mtu); 4585 WRITE_ONCE(netdev->mtu, new_mtu); 4586 4587 if (netif_running(netdev)) { 4588 adapter->flags |= IAVF_FLAG_RESET_NEEDED; 4589 iavf_reset_step(adapter); 4590 } 4591 4592 return 0; 4593 } 4594 4595 /** 4596 * iavf_disable_fdir - disable Flow Director and clear existing filters 4597 * @adapter: board private structure 4598 **/ 4599 static void iavf_disable_fdir(struct iavf_adapter *adapter) 4600 { 4601 struct iavf_fdir_fltr *fdir, *fdirtmp; 4602 bool del_filters = false; 4603 4604 adapter->flags &= ~IAVF_FLAG_FDIR_ENABLED; 4605 4606 /* remove all Flow Director filters */ 4607 spin_lock_bh(&adapter->fdir_fltr_lock); 4608 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, 4609 list) { 4610 if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST || 4611 fdir->state == IAVF_FDIR_FLTR_INACTIVE) { 4612 /* Delete filters not registered in PF */ 4613 list_del(&fdir->list); 4614 iavf_dec_fdir_active_fltr(adapter, fdir); 4615 kfree(fdir); 4616 } else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING || 4617 fdir->state == IAVF_FDIR_FLTR_DIS_REQUEST || 4618 fdir->state == IAVF_FDIR_FLTR_ACTIVE) { 4619 /* Filters registered in PF, schedule their deletion */ 4620 fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST; 4621 del_filters = true; 4622 } else if (fdir->state == IAVF_FDIR_FLTR_DIS_PENDING) { 4623 /* Request to delete filter already sent to PF, change 4624 * state to DEL_PENDING to delete filter after PF's 4625 * response, not set as INACTIVE 4626 */ 4627 fdir->state = IAVF_FDIR_FLTR_DEL_PENDING; 4628 } 4629 } 4630 spin_unlock_bh(&adapter->fdir_fltr_lock); 4631 4632 if (del_filters) { 4633 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 4634 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); 4635 } 4636 } 4637 4638 #define NETIF_VLAN_OFFLOAD_FEATURES (NETIF_F_HW_VLAN_CTAG_RX | \ 4639 NETIF_F_HW_VLAN_CTAG_TX | \ 4640 NETIF_F_HW_VLAN_STAG_RX | \ 4641 NETIF_F_HW_VLAN_STAG_TX) 4642 4643 /** 4644 * iavf_set_features - set the netdev feature flags 4645 * @netdev: ptr to the netdev being adjusted 4646 * @features: the feature set that the stack is suggesting 4647 * Note: expects to be called while under rtnl_lock() 4648 **/ 4649 static int iavf_set_features(struct net_device *netdev, 4650 netdev_features_t features) 4651 { 4652 struct iavf_adapter *adapter = netdev_priv(netdev); 4653 4654 /* trigger update on any VLAN feature change */ 4655 if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^ 4656 (features & NETIF_VLAN_OFFLOAD_FEATURES)) 4657 iavf_set_vlan_offload_features(adapter, netdev->features, 4658 features); 4659 if (CRC_OFFLOAD_ALLOWED(adapter) && 4660 ((netdev->features & NETIF_F_RXFCS) ^ (features & NETIF_F_RXFCS))) 4661 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 4662 4663 if ((netdev->features & NETIF_F_NTUPLE) ^ (features & NETIF_F_NTUPLE)) { 4664 if (features & NETIF_F_NTUPLE) 4665 adapter->flags |= IAVF_FLAG_FDIR_ENABLED; 4666 else 4667 iavf_disable_fdir(adapter); 4668 } 4669 4670 return 0; 4671 } 4672 4673 /** 4674 * iavf_features_check - Validate encapsulated packet conforms to limits 4675 * @skb: skb buff 4676 * @dev: This physical port's netdev 4677 * @features: Offload features that the stack believes apply 4678 **/ 4679 static netdev_features_t iavf_features_check(struct sk_buff *skb, 4680 struct net_device *dev, 4681 netdev_features_t features) 4682 { 4683 size_t len; 4684 4685 /* No point in doing any of this if neither checksum nor GSO are 4686 * being requested for this frame. We can rule out both by just 4687 * checking for CHECKSUM_PARTIAL 4688 */ 4689 if (skb->ip_summed != CHECKSUM_PARTIAL) 4690 return features; 4691 4692 /* We cannot support GSO if the MSS is going to be less than 4693 * 64 bytes. If it is then we need to drop support for GSO. 4694 */ 4695 if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64)) 4696 features &= ~NETIF_F_GSO_MASK; 4697 4698 /* MACLEN can support at most 63 words */ 4699 len = skb_network_offset(skb); 4700 if (len & ~(63 * 2)) 4701 goto out_err; 4702 4703 /* IPLEN and EIPLEN can support at most 127 dwords */ 4704 len = skb_network_header_len(skb); 4705 if (len & ~(127 * 4)) 4706 goto out_err; 4707 4708 if (skb->encapsulation) { 4709 /* L4TUNLEN can support 127 words */ 4710 len = skb_inner_network_header(skb) - skb_transport_header(skb); 4711 if (len & ~(127 * 2)) 4712 goto out_err; 4713 4714 /* IPLEN can support at most 127 dwords */ 4715 len = skb_inner_transport_header(skb) - 4716 skb_inner_network_header(skb); 4717 if (len & ~(127 * 4)) 4718 goto out_err; 4719 } 4720 4721 /* No need to validate L4LEN as TCP is the only protocol with a 4722 * flexible value and we support all possible values supported 4723 * by TCP, which is at most 15 dwords 4724 */ 4725 4726 return features; 4727 out_err: 4728 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 4729 } 4730 4731 /** 4732 * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off 4733 * @adapter: board private structure 4734 * 4735 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4736 * were negotiated determine the VLAN features that can be toggled on and off. 4737 **/ 4738 static netdev_features_t 4739 iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter) 4740 { 4741 netdev_features_t hw_features = 0; 4742 4743 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4744 return hw_features; 4745 4746 /* Enable VLAN features if supported */ 4747 if (VLAN_ALLOWED(adapter)) { 4748 hw_features |= (NETIF_F_HW_VLAN_CTAG_TX | 4749 NETIF_F_HW_VLAN_CTAG_RX); 4750 } else if (VLAN_V2_ALLOWED(adapter)) { 4751 struct virtchnl_vlan_caps *vlan_v2_caps = 4752 &adapter->vlan_v2_caps; 4753 struct virtchnl_vlan_supported_caps *stripping_support = 4754 &vlan_v2_caps->offloads.stripping_support; 4755 struct virtchnl_vlan_supported_caps *insertion_support = 4756 &vlan_v2_caps->offloads.insertion_support; 4757 4758 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4759 stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4760 if (stripping_support->outer & 4761 VIRTCHNL_VLAN_ETHERTYPE_8100) 4762 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4763 if (stripping_support->outer & 4764 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4765 hw_features |= NETIF_F_HW_VLAN_STAG_RX; 4766 } else if (stripping_support->inner != 4767 VIRTCHNL_VLAN_UNSUPPORTED && 4768 stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4769 if (stripping_support->inner & 4770 VIRTCHNL_VLAN_ETHERTYPE_8100) 4771 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4772 } 4773 4774 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4775 insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4776 if (insertion_support->outer & 4777 VIRTCHNL_VLAN_ETHERTYPE_8100) 4778 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4779 if (insertion_support->outer & 4780 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4781 hw_features |= NETIF_F_HW_VLAN_STAG_TX; 4782 } else if (insertion_support->inner && 4783 insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4784 if (insertion_support->inner & 4785 VIRTCHNL_VLAN_ETHERTYPE_8100) 4786 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4787 } 4788 } 4789 4790 if (CRC_OFFLOAD_ALLOWED(adapter)) 4791 hw_features |= NETIF_F_RXFCS; 4792 4793 return hw_features; 4794 } 4795 4796 /** 4797 * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures 4798 * @adapter: board private structure 4799 * 4800 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4801 * were negotiated determine the VLAN features that are enabled by default. 4802 **/ 4803 static netdev_features_t 4804 iavf_get_netdev_vlan_features(struct iavf_adapter *adapter) 4805 { 4806 netdev_features_t features = 0; 4807 4808 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4809 return features; 4810 4811 if (VLAN_ALLOWED(adapter)) { 4812 features |= NETIF_F_HW_VLAN_CTAG_FILTER | 4813 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX; 4814 } else if (VLAN_V2_ALLOWED(adapter)) { 4815 struct virtchnl_vlan_caps *vlan_v2_caps = 4816 &adapter->vlan_v2_caps; 4817 struct virtchnl_vlan_supported_caps *filtering_support = 4818 &vlan_v2_caps->filtering.filtering_support; 4819 struct virtchnl_vlan_supported_caps *stripping_support = 4820 &vlan_v2_caps->offloads.stripping_support; 4821 struct virtchnl_vlan_supported_caps *insertion_support = 4822 &vlan_v2_caps->offloads.insertion_support; 4823 u32 ethertype_init; 4824 4825 /* give priority to outer stripping and don't support both outer 4826 * and inner stripping 4827 */ 4828 ethertype_init = vlan_v2_caps->offloads.ethertype_init; 4829 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4830 if (stripping_support->outer & 4831 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4832 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4833 features |= NETIF_F_HW_VLAN_CTAG_RX; 4834 else if (stripping_support->outer & 4835 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4836 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4837 features |= NETIF_F_HW_VLAN_STAG_RX; 4838 } else if (stripping_support->inner != 4839 VIRTCHNL_VLAN_UNSUPPORTED) { 4840 if (stripping_support->inner & 4841 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4842 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4843 features |= NETIF_F_HW_VLAN_CTAG_RX; 4844 } 4845 4846 /* give priority to outer insertion and don't support both outer 4847 * and inner insertion 4848 */ 4849 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4850 if (insertion_support->outer & 4851 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4852 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4853 features |= NETIF_F_HW_VLAN_CTAG_TX; 4854 else if (insertion_support->outer & 4855 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4856 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4857 features |= NETIF_F_HW_VLAN_STAG_TX; 4858 } else if (insertion_support->inner != 4859 VIRTCHNL_VLAN_UNSUPPORTED) { 4860 if (insertion_support->inner & 4861 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4862 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4863 features |= NETIF_F_HW_VLAN_CTAG_TX; 4864 } 4865 4866 /* give priority to outer filtering and don't bother if both 4867 * outer and inner filtering are enabled 4868 */ 4869 ethertype_init = vlan_v2_caps->filtering.ethertype_init; 4870 if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4871 if (filtering_support->outer & 4872 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4873 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4874 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4875 if (filtering_support->outer & 4876 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4877 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4878 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4879 } else if (filtering_support->inner != 4880 VIRTCHNL_VLAN_UNSUPPORTED) { 4881 if (filtering_support->inner & 4882 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4883 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4884 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4885 if (filtering_support->inner & 4886 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4887 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4888 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4889 } 4890 } 4891 4892 return features; 4893 } 4894 4895 #define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \ 4896 (!(((requested) & (feature_bit)) && \ 4897 !((allowed) & (feature_bit)))) 4898 4899 /** 4900 * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support 4901 * @adapter: board private structure 4902 * @requested_features: stack requested NETDEV features 4903 **/ 4904 static netdev_features_t 4905 iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter, 4906 netdev_features_t requested_features) 4907 { 4908 netdev_features_t allowed_features; 4909 4910 allowed_features = iavf_get_netdev_vlan_hw_features(adapter) | 4911 iavf_get_netdev_vlan_features(adapter); 4912 4913 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4914 allowed_features, 4915 NETIF_F_HW_VLAN_CTAG_TX)) 4916 requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX; 4917 4918 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4919 allowed_features, 4920 NETIF_F_HW_VLAN_CTAG_RX)) 4921 requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX; 4922 4923 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4924 allowed_features, 4925 NETIF_F_HW_VLAN_STAG_TX)) 4926 requested_features &= ~NETIF_F_HW_VLAN_STAG_TX; 4927 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4928 allowed_features, 4929 NETIF_F_HW_VLAN_STAG_RX)) 4930 requested_features &= ~NETIF_F_HW_VLAN_STAG_RX; 4931 4932 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4933 allowed_features, 4934 NETIF_F_HW_VLAN_CTAG_FILTER)) 4935 requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4936 4937 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4938 allowed_features, 4939 NETIF_F_HW_VLAN_STAG_FILTER)) 4940 requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER; 4941 4942 if ((requested_features & 4943 (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) && 4944 (requested_features & 4945 (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) && 4946 adapter->vlan_v2_caps.offloads.ethertype_match == 4947 VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) { 4948 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"); 4949 requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX | 4950 NETIF_F_HW_VLAN_STAG_TX); 4951 } 4952 4953 return requested_features; 4954 } 4955 4956 /** 4957 * iavf_fix_strip_features - fix NETDEV CRC and VLAN strip features 4958 * @adapter: board private structure 4959 * @requested_features: stack requested NETDEV features 4960 * 4961 * Returns fixed-up features bits 4962 **/ 4963 static netdev_features_t 4964 iavf_fix_strip_features(struct iavf_adapter *adapter, 4965 netdev_features_t requested_features) 4966 { 4967 struct net_device *netdev = adapter->netdev; 4968 bool crc_offload_req, is_vlan_strip; 4969 netdev_features_t vlan_strip; 4970 int num_non_zero_vlan; 4971 4972 crc_offload_req = CRC_OFFLOAD_ALLOWED(adapter) && 4973 (requested_features & NETIF_F_RXFCS); 4974 num_non_zero_vlan = iavf_get_num_vlans_added(adapter); 4975 vlan_strip = (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX); 4976 is_vlan_strip = requested_features & vlan_strip; 4977 4978 if (!crc_offload_req) 4979 return requested_features; 4980 4981 if (!num_non_zero_vlan && (netdev->features & vlan_strip) && 4982 !(netdev->features & NETIF_F_RXFCS) && is_vlan_strip) { 4983 requested_features &= ~vlan_strip; 4984 netdev_info(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n"); 4985 return requested_features; 4986 } 4987 4988 if ((netdev->features & NETIF_F_RXFCS) && is_vlan_strip) { 4989 requested_features &= ~vlan_strip; 4990 if (!(netdev->features & vlan_strip)) 4991 netdev_info(netdev, "To enable VLAN stripping, first need to enable FCS/CRC stripping"); 4992 4993 return requested_features; 4994 } 4995 4996 if (num_non_zero_vlan && is_vlan_strip && 4997 !(netdev->features & NETIF_F_RXFCS)) { 4998 requested_features &= ~NETIF_F_RXFCS; 4999 netdev_info(netdev, "To disable FCS/CRC stripping, first need to disable VLAN stripping"); 5000 } 5001 5002 return requested_features; 5003 } 5004 5005 /** 5006 * iavf_fix_features - fix up the netdev feature bits 5007 * @netdev: our net device 5008 * @features: desired feature bits 5009 * 5010 * Returns fixed-up features bits 5011 **/ 5012 static netdev_features_t iavf_fix_features(struct net_device *netdev, 5013 netdev_features_t features) 5014 { 5015 struct iavf_adapter *adapter = netdev_priv(netdev); 5016 5017 features = iavf_fix_netdev_vlan_features(adapter, features); 5018 5019 if (!FDIR_FLTR_SUPPORT(adapter)) 5020 features &= ~NETIF_F_NTUPLE; 5021 5022 return iavf_fix_strip_features(adapter, features); 5023 } 5024 5025 static int iavf_hwstamp_get(struct net_device *netdev, 5026 struct kernel_hwtstamp_config *config) 5027 { 5028 struct iavf_adapter *adapter = netdev_priv(netdev); 5029 5030 *config = adapter->ptp.hwtstamp_config; 5031 5032 return 0; 5033 } 5034 5035 static int iavf_hwstamp_set(struct net_device *netdev, 5036 struct kernel_hwtstamp_config *config, 5037 struct netlink_ext_ack *extack) 5038 { 5039 struct iavf_adapter *adapter = netdev_priv(netdev); 5040 5041 return iavf_ptp_set_ts_config(adapter, config, extack); 5042 } 5043 5044 static int 5045 iavf_verify_shaper(struct net_shaper_binding *binding, 5046 const struct net_shaper *shaper, 5047 struct netlink_ext_ack *extack) 5048 { 5049 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5050 u64 vf_max; 5051 5052 if (shaper->handle.scope == NET_SHAPER_SCOPE_QUEUE) { 5053 vf_max = adapter->qos_caps->cap[0].shaper.peak; 5054 if (vf_max && shaper->bw_max > vf_max) { 5055 NL_SET_ERR_MSG_FMT(extack, "Max rate (%llu) of queue %d can't exceed max TX rate of VF (%llu kbps)", 5056 shaper->bw_max, shaper->handle.id, 5057 vf_max); 5058 return -EINVAL; 5059 } 5060 } 5061 return 0; 5062 } 5063 5064 static int 5065 iavf_shaper_set(struct net_shaper_binding *binding, 5066 const struct net_shaper *shaper, 5067 struct netlink_ext_ack *extack) 5068 { 5069 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5070 const struct net_shaper_handle *handle = &shaper->handle; 5071 struct iavf_ring *tx_ring; 5072 int ret; 5073 5074 netdev_assert_locked(adapter->netdev); 5075 5076 if (handle->id >= adapter->num_active_queues) 5077 return 0; 5078 5079 ret = iavf_verify_shaper(binding, shaper, extack); 5080 if (ret) 5081 return ret; 5082 5083 tx_ring = &adapter->tx_rings[handle->id]; 5084 5085 tx_ring->q_shaper.bw_min = div_u64(shaper->bw_min, 1000); 5086 tx_ring->q_shaper.bw_max = div_u64(shaper->bw_max, 1000); 5087 tx_ring->q_shaper_update = true; 5088 5089 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 5090 5091 return 0; 5092 } 5093 5094 static int iavf_shaper_del(struct net_shaper_binding *binding, 5095 const struct net_shaper_handle *handle, 5096 struct netlink_ext_ack *extack) 5097 { 5098 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5099 struct iavf_ring *tx_ring; 5100 5101 netdev_assert_locked(adapter->netdev); 5102 5103 if (handle->id >= adapter->num_active_queues) 5104 return 0; 5105 5106 tx_ring = &adapter->tx_rings[handle->id]; 5107 tx_ring->q_shaper.bw_min = 0; 5108 tx_ring->q_shaper.bw_max = 0; 5109 tx_ring->q_shaper_update = true; 5110 5111 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 5112 5113 return 0; 5114 } 5115 5116 static void iavf_shaper_cap(struct net_shaper_binding *binding, 5117 enum net_shaper_scope scope, 5118 unsigned long *flags) 5119 { 5120 if (scope != NET_SHAPER_SCOPE_QUEUE) 5121 return; 5122 5123 *flags = BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MIN) | 5124 BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MAX) | 5125 BIT(NET_SHAPER_A_CAPS_SUPPORT_METRIC_BPS); 5126 } 5127 5128 static const struct net_shaper_ops iavf_shaper_ops = { 5129 .set = iavf_shaper_set, 5130 .delete = iavf_shaper_del, 5131 .capabilities = iavf_shaper_cap, 5132 }; 5133 5134 static const struct net_device_ops iavf_netdev_ops = { 5135 .ndo_open = iavf_open, 5136 .ndo_stop = iavf_close, 5137 .ndo_start_xmit = iavf_xmit_frame, 5138 .ndo_set_rx_mode_async = iavf_set_rx_mode, 5139 .ndo_validate_addr = eth_validate_addr, 5140 .ndo_set_mac_address = iavf_set_mac, 5141 .ndo_change_mtu = iavf_change_mtu, 5142 .ndo_tx_timeout = iavf_tx_timeout, 5143 .ndo_vlan_rx_add_vid = iavf_vlan_rx_add_vid, 5144 .ndo_vlan_rx_kill_vid = iavf_vlan_rx_kill_vid, 5145 .ndo_features_check = iavf_features_check, 5146 .ndo_fix_features = iavf_fix_features, 5147 .ndo_set_features = iavf_set_features, 5148 .ndo_setup_tc = iavf_setup_tc, 5149 .net_shaper_ops = &iavf_shaper_ops, 5150 .ndo_hwtstamp_get = iavf_hwstamp_get, 5151 .ndo_hwtstamp_set = iavf_hwstamp_set, 5152 }; 5153 5154 /** 5155 * iavf_check_reset_complete - check that VF reset is complete 5156 * @hw: pointer to hw struct 5157 * 5158 * Returns 0 if device is ready to use, or -EBUSY if it's in reset. 5159 **/ 5160 static int iavf_check_reset_complete(struct iavf_hw *hw) 5161 { 5162 u32 rstat; 5163 int i; 5164 5165 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 5166 rstat = rd32(hw, IAVF_VFGEN_RSTAT) & 5167 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 5168 if ((rstat == VIRTCHNL_VFR_VFACTIVE) || 5169 (rstat == VIRTCHNL_VFR_COMPLETED)) 5170 return 0; 5171 msleep(IAVF_RESET_WAIT_MS); 5172 } 5173 return -EBUSY; 5174 } 5175 5176 /** 5177 * iavf_process_config - Process the config information we got from the PF 5178 * @adapter: board private structure 5179 * 5180 * Verify that we have a valid config struct, and set up our netdev features 5181 * and our VSI struct. 5182 **/ 5183 int iavf_process_config(struct iavf_adapter *adapter) 5184 { 5185 struct virtchnl_vf_resource *vfres = adapter->vf_res; 5186 netdev_features_t hw_vlan_features, vlan_features; 5187 struct net_device *netdev = adapter->netdev; 5188 netdev_features_t hw_enc_features; 5189 netdev_features_t hw_features; 5190 5191 hw_enc_features = NETIF_F_SG | 5192 NETIF_F_IP_CSUM | 5193 NETIF_F_IPV6_CSUM | 5194 NETIF_F_HIGHDMA | 5195 NETIF_F_SOFT_FEATURES | 5196 NETIF_F_TSO | 5197 NETIF_F_TSO_ECN | 5198 NETIF_F_TSO6 | 5199 NETIF_F_SCTP_CRC | 5200 NETIF_F_RXHASH | 5201 NETIF_F_RXCSUM | 5202 0; 5203 5204 /* advertise to stack only if offloads for encapsulated packets is 5205 * supported 5206 */ 5207 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) { 5208 hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL | 5209 NETIF_F_GSO_GRE | 5210 NETIF_F_GSO_GRE_CSUM | 5211 NETIF_F_GSO_IPXIP4 | 5212 NETIF_F_GSO_IPXIP6 | 5213 NETIF_F_GSO_UDP_TUNNEL_CSUM | 5214 NETIF_F_GSO_PARTIAL | 5215 0; 5216 5217 if (!(vfres->vf_cap_flags & 5218 VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 5219 netdev->gso_partial_features |= 5220 NETIF_F_GSO_UDP_TUNNEL_CSUM; 5221 5222 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; 5223 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; 5224 netdev->hw_enc_features |= hw_enc_features; 5225 } 5226 /* record features VLANs can make use of */ 5227 netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID; 5228 5229 /* Write features and hw_features separately to avoid polluting 5230 * with, or dropping, features that are set when we registered. 5231 */ 5232 hw_features = hw_enc_features; 5233 5234 /* get HW VLAN features that can be toggled */ 5235 hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter); 5236 5237 /* Enable HW TC offload if ADQ or tc U32 is supported */ 5238 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ || 5239 TC_U32_SUPPORT(adapter)) 5240 hw_features |= NETIF_F_HW_TC; 5241 5242 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO) 5243 hw_features |= NETIF_F_GSO_UDP_L4; 5244 5245 netdev->hw_features |= hw_features | hw_vlan_features; 5246 vlan_features = iavf_get_netdev_vlan_features(adapter); 5247 5248 netdev->features |= hw_features | vlan_features; 5249 5250 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN) 5251 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 5252 5253 if (FDIR_FLTR_SUPPORT(adapter)) { 5254 netdev->hw_features |= NETIF_F_NTUPLE; 5255 netdev->features |= NETIF_F_NTUPLE; 5256 adapter->flags |= IAVF_FLAG_FDIR_ENABLED; 5257 } 5258 5259 netdev->priv_flags |= IFF_UNICAST_FLT; 5260 5261 /* Do not turn on offloads when they are requested to be turned off. 5262 * TSO needs minimum 576 bytes to work correctly. 5263 */ 5264 if (netdev->wanted_features) { 5265 if (!(netdev->wanted_features & NETIF_F_TSO) || 5266 netdev->mtu < 576) 5267 netdev->features &= ~NETIF_F_TSO; 5268 if (!(netdev->wanted_features & NETIF_F_TSO6) || 5269 netdev->mtu < 576) 5270 netdev->features &= ~NETIF_F_TSO6; 5271 if (!(netdev->wanted_features & NETIF_F_TSO_ECN)) 5272 netdev->features &= ~NETIF_F_TSO_ECN; 5273 if (!(netdev->wanted_features & NETIF_F_GRO)) 5274 netdev->features &= ~NETIF_F_GRO; 5275 if (!(netdev->wanted_features & NETIF_F_GSO)) 5276 netdev->features &= ~NETIF_F_GSO; 5277 } 5278 5279 return 0; 5280 } 5281 5282 /** 5283 * iavf_probe - Device Initialization Routine 5284 * @pdev: PCI device information struct 5285 * @ent: entry in iavf_pci_tbl 5286 * 5287 * Returns 0 on success, negative on failure 5288 * 5289 * iavf_probe initializes an adapter identified by a pci_dev structure. 5290 * The OS initialization, configuring of the adapter private structure, 5291 * and a hardware reset occur. 5292 **/ 5293 static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 5294 { 5295 struct net_device *netdev; 5296 struct iavf_adapter *adapter = NULL; 5297 struct iavf_hw *hw = NULL; 5298 int err, len; 5299 5300 err = pci_enable_device(pdev); 5301 if (err) 5302 return err; 5303 5304 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 5305 if (err) { 5306 dev_err(&pdev->dev, 5307 "DMA configuration failed: 0x%x\n", err); 5308 goto err_dma; 5309 } 5310 5311 err = pci_request_regions(pdev, iavf_driver_name); 5312 if (err) { 5313 dev_err(&pdev->dev, 5314 "pci_request_regions failed 0x%x\n", err); 5315 goto err_pci_reg; 5316 } 5317 5318 pci_set_master(pdev); 5319 5320 netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter), 5321 IAVF_MAX_REQ_QUEUES); 5322 if (!netdev) { 5323 err = -ENOMEM; 5324 goto err_alloc_etherdev; 5325 } 5326 5327 netif_set_affinity_auto(netdev); 5328 SET_NETDEV_DEV(netdev, &pdev->dev); 5329 5330 pci_set_drvdata(pdev, netdev); 5331 adapter = netdev_priv(netdev); 5332 5333 adapter->netdev = netdev; 5334 adapter->pdev = pdev; 5335 5336 hw = &adapter->hw; 5337 hw->back = adapter; 5338 5339 adapter->wq = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, 5340 iavf_driver_name); 5341 if (!adapter->wq) { 5342 err = -ENOMEM; 5343 goto err_alloc_wq; 5344 } 5345 5346 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 5347 iavf_change_state(adapter, __IAVF_STARTUP); 5348 5349 /* Call save state here because it relies on the adapter struct. */ 5350 pci_save_state(pdev); 5351 5352 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 5353 pci_resource_len(pdev, 0)); 5354 if (!hw->hw_addr) { 5355 err = -EIO; 5356 goto err_ioremap; 5357 } 5358 hw->vendor_id = pdev->vendor; 5359 hw->device_id = pdev->device; 5360 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); 5361 hw->subsystem_vendor_id = pdev->subsystem_vendor; 5362 hw->subsystem_device_id = pdev->subsystem_device; 5363 hw->bus.device = PCI_SLOT(pdev->devfn); 5364 hw->bus.func = PCI_FUNC(pdev->devfn); 5365 hw->bus.bus_id = pdev->bus->number; 5366 5367 len = struct_size(adapter->qos_caps, cap, IAVF_MAX_QOS_TC_NUM); 5368 adapter->qos_caps = kzalloc(len, GFP_KERNEL); 5369 if (!adapter->qos_caps) { 5370 err = -ENOMEM; 5371 goto err_alloc_qos_cap; 5372 } 5373 5374 mutex_init(&hw->aq.asq_mutex); 5375 mutex_init(&hw->aq.arq_mutex); 5376 5377 spin_lock_init(&adapter->mac_vlan_list_lock); 5378 spin_lock_init(&adapter->cloud_filter_list_lock); 5379 spin_lock_init(&adapter->fdir_fltr_lock); 5380 spin_lock_init(&adapter->adv_rss_lock); 5381 spin_lock_init(&adapter->current_netdev_promisc_flags_lock); 5382 5383 INIT_LIST_HEAD(&adapter->mac_filter_list); 5384 INIT_LIST_HEAD(&adapter->vlan_filter_list); 5385 INIT_LIST_HEAD(&adapter->cloud_filter_list); 5386 INIT_LIST_HEAD(&adapter->fdir_list_head); 5387 INIT_LIST_HEAD(&adapter->adv_rss_list_head); 5388 5389 INIT_WORK(&adapter->reset_task, iavf_reset_task); 5390 INIT_WORK(&adapter->adminq_task, iavf_adminq_task); 5391 INIT_WORK(&adapter->finish_config, iavf_finish_config); 5392 INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task); 5393 5394 /* Setup the wait queue for indicating transition to down status */ 5395 init_waitqueue_head(&adapter->down_waitqueue); 5396 5397 /* Setup the wait queue for indicating virtchannel events */ 5398 init_waitqueue_head(&adapter->vc_waitqueue); 5399 5400 INIT_LIST_HEAD(&adapter->ptp.aq_cmds); 5401 init_waitqueue_head(&adapter->ptp.phc_time_waitqueue); 5402 mutex_init(&adapter->ptp.aq_cmd_lock); 5403 5404 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 5405 msecs_to_jiffies(5 * (pdev->devfn & 0x07))); 5406 /* Initialization goes on in the work. Do not add more of it below. */ 5407 return 0; 5408 5409 err_alloc_qos_cap: 5410 iounmap(hw->hw_addr); 5411 err_ioremap: 5412 destroy_workqueue(adapter->wq); 5413 err_alloc_wq: 5414 free_netdev(netdev); 5415 err_alloc_etherdev: 5416 pci_release_regions(pdev); 5417 err_pci_reg: 5418 err_dma: 5419 pci_disable_device(pdev); 5420 return err; 5421 } 5422 5423 /** 5424 * iavf_suspend - Power management suspend routine 5425 * @dev_d: device info pointer 5426 * 5427 * Called when the system (VM) is entering sleep/suspend. 5428 **/ 5429 static int iavf_suspend(struct device *dev_d) 5430 { 5431 struct net_device *netdev = dev_get_drvdata(dev_d); 5432 struct iavf_adapter *adapter = netdev_priv(netdev); 5433 bool running; 5434 5435 netif_device_detach(netdev); 5436 5437 running = netif_running(netdev); 5438 if (running) 5439 rtnl_lock(); 5440 netdev_lock(netdev); 5441 5442 if (running) 5443 iavf_down(adapter); 5444 5445 iavf_free_misc_irq(adapter); 5446 iavf_reset_interrupt_capability(adapter); 5447 5448 netdev_unlock(netdev); 5449 if (running) 5450 rtnl_unlock(); 5451 5452 return 0; 5453 } 5454 5455 /** 5456 * iavf_resume - Power management resume routine 5457 * @dev_d: device info pointer 5458 * 5459 * Called when the system (VM) is resumed from sleep/suspend. 5460 **/ 5461 static int iavf_resume(struct device *dev_d) 5462 { 5463 struct pci_dev *pdev = to_pci_dev(dev_d); 5464 struct iavf_adapter *adapter; 5465 int err; 5466 5467 adapter = iavf_pdev_to_adapter(pdev); 5468 5469 pci_set_master(pdev); 5470 5471 rtnl_lock(); 5472 err = iavf_set_interrupt_capability(adapter); 5473 if (err) { 5474 rtnl_unlock(); 5475 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); 5476 return err; 5477 } 5478 err = iavf_request_misc_irq(adapter); 5479 rtnl_unlock(); 5480 if (err) { 5481 dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); 5482 return err; 5483 } 5484 5485 queue_work(adapter->wq, &adapter->reset_task); 5486 5487 netif_device_attach(adapter->netdev); 5488 5489 return err; 5490 } 5491 5492 /** 5493 * iavf_remove - Device Removal Routine 5494 * @pdev: PCI device information struct 5495 * 5496 * iavf_remove is called by the PCI subsystem to alert the driver 5497 * that it should release a PCI device. The could be caused by a 5498 * Hot-Plug event, or because the driver is going to be removed from 5499 * memory. 5500 **/ 5501 static void iavf_remove(struct pci_dev *pdev) 5502 { 5503 struct iavf_fdir_fltr *fdir, *fdirtmp; 5504 struct iavf_vlan_filter *vlf, *vlftmp; 5505 struct iavf_cloud_filter *cf, *cftmp; 5506 struct iavf_adv_rss *rss, *rsstmp; 5507 struct iavf_mac_filter *f, *ftmp; 5508 struct iavf_adapter *adapter; 5509 struct net_device *netdev; 5510 struct iavf_hw *hw; 5511 5512 /* Don't proceed with remove if netdev is already freed */ 5513 netdev = pci_get_drvdata(pdev); 5514 if (!netdev) 5515 return; 5516 5517 adapter = iavf_pdev_to_adapter(pdev); 5518 hw = &adapter->hw; 5519 5520 if (test_and_set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 5521 return; 5522 5523 /* Wait until port initialization is complete. 5524 * There are flows where register/unregister netdev may race. 5525 */ 5526 while (1) { 5527 netdev_lock(netdev); 5528 if (adapter->state == __IAVF_RUNNING || 5529 adapter->state == __IAVF_DOWN || 5530 adapter->state == __IAVF_INIT_FAILED) { 5531 netdev_unlock(netdev); 5532 break; 5533 } 5534 /* Simply return if we already went through iavf_shutdown */ 5535 if (adapter->state == __IAVF_REMOVE) { 5536 netdev_unlock(netdev); 5537 return; 5538 } 5539 5540 netdev_unlock(netdev); 5541 usleep_range(500, 1000); 5542 } 5543 cancel_delayed_work_sync(&adapter->watchdog_task); 5544 cancel_work_sync(&adapter->finish_config); 5545 5546 if (netdev->reg_state == NETREG_REGISTERED) 5547 unregister_netdev(netdev); 5548 5549 netdev_lock(netdev); 5550 dev_info(&adapter->pdev->dev, "Removing device\n"); 5551 iavf_change_state(adapter, __IAVF_REMOVE); 5552 5553 iavf_request_reset(adapter); 5554 msleep(50); 5555 /* If the FW isn't responding, kick it once, but only once. */ 5556 if (!iavf_asq_done(hw)) { 5557 iavf_request_reset(adapter); 5558 msleep(50); 5559 } 5560 5561 iavf_ptp_release(adapter); 5562 5563 iavf_misc_irq_disable(adapter); 5564 /* Shut down all the garbage mashers on the detention level */ 5565 netdev_unlock(netdev); 5566 cancel_work_sync(&adapter->reset_task); 5567 cancel_delayed_work_sync(&adapter->watchdog_task); 5568 cancel_work_sync(&adapter->adminq_task); 5569 netdev_lock(netdev); 5570 5571 adapter->aq_required = 0; 5572 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 5573 5574 iavf_free_all_tx_resources(adapter); 5575 iavf_free_all_rx_resources(adapter); 5576 iavf_free_misc_irq(adapter); 5577 iavf_free_interrupt_scheme(adapter); 5578 5579 iavf_free_rss(adapter); 5580 5581 if (hw->aq.asq.count) 5582 iavf_shutdown_adminq(hw); 5583 5584 /* destroy the locks only once, here */ 5585 mutex_destroy(&hw->aq.arq_mutex); 5586 mutex_destroy(&hw->aq.asq_mutex); 5587 netdev_unlock(netdev); 5588 5589 iounmap(hw->hw_addr); 5590 pci_release_regions(pdev); 5591 kfree(adapter->vf_res); 5592 spin_lock_bh(&adapter->mac_vlan_list_lock); 5593 /* If we got removed before an up/down sequence, we've got a filter 5594 * hanging out there that we need to get rid of. 5595 */ 5596 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 5597 list_del(&f->list); 5598 kfree(f); 5599 } 5600 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 5601 list) { 5602 list_del(&vlf->list); 5603 kfree(vlf); 5604 } 5605 5606 spin_unlock_bh(&adapter->mac_vlan_list_lock); 5607 5608 spin_lock_bh(&adapter->cloud_filter_list_lock); 5609 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 5610 list_del(&cf->list); 5611 kfree(cf); 5612 } 5613 spin_unlock_bh(&adapter->cloud_filter_list_lock); 5614 5615 spin_lock_bh(&adapter->fdir_fltr_lock); 5616 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) { 5617 list_del(&fdir->list); 5618 kfree(fdir); 5619 } 5620 spin_unlock_bh(&adapter->fdir_fltr_lock); 5621 5622 spin_lock_bh(&adapter->adv_rss_lock); 5623 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 5624 list) { 5625 list_del(&rss->list); 5626 kfree(rss); 5627 } 5628 spin_unlock_bh(&adapter->adv_rss_lock); 5629 5630 destroy_workqueue(adapter->wq); 5631 5632 pci_set_drvdata(pdev, NULL); 5633 5634 free_netdev(netdev); 5635 5636 pci_disable_device(pdev); 5637 } 5638 5639 /** 5640 * iavf_shutdown - Shutdown the device in preparation for a reboot 5641 * @pdev: pci device structure 5642 **/ 5643 static void iavf_shutdown(struct pci_dev *pdev) 5644 { 5645 iavf_remove(pdev); 5646 5647 if (system_state == SYSTEM_POWER_OFF) 5648 pci_set_power_state(pdev, PCI_D3hot); 5649 } 5650 5651 static DEFINE_SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume); 5652 5653 static struct pci_driver iavf_driver = { 5654 .name = iavf_driver_name, 5655 .id_table = iavf_pci_tbl, 5656 .probe = iavf_probe, 5657 .remove = iavf_remove, 5658 .driver.pm = pm_sleep_ptr(&iavf_pm_ops), 5659 .shutdown = iavf_shutdown, 5660 }; 5661 5662 /** 5663 * iavf_init_module - Driver Registration Routine 5664 * 5665 * iavf_init_module is the first routine called when the driver is 5666 * loaded. All it does is register with the PCI subsystem. 5667 **/ 5668 static int __init iavf_init_module(void) 5669 { 5670 pr_info("iavf: %s\n", iavf_driver_string); 5671 5672 pr_info("%s\n", iavf_copyright); 5673 5674 return pci_register_driver(&iavf_driver); 5675 } 5676 5677 module_init(iavf_init_module); 5678 5679 /** 5680 * iavf_exit_module - Driver Exit Cleanup Routine 5681 * 5682 * iavf_exit_module is called just before the driver is removed 5683 * from memory. 5684 **/ 5685 static void __exit iavf_exit_module(void) 5686 { 5687 pci_unregister_driver(&iavf_driver); 5688 } 5689 5690 module_exit(iavf_exit_module); 5691 5692 /* iavf_main.c */ 5693