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), 0}, 40 {PCI_VDEVICE(INTEL, IAVF_DEV_ID_VF_HV), 0}, 41 {PCI_VDEVICE(INTEL, IAVF_DEV_ID_X722_VF), 0}, 42 {PCI_VDEVICE(INTEL, IAVF_DEV_ID_ADAPTIVE_VF), 0}, 43 /* required last entry */ 44 {0, } 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 /* IAVF_VLAN_REMOVE means that VLAN wasn't yet removed. 761 * We can safely only change the state here. 762 */ 763 f->state = IAVF_VLAN_ACTIVE; 764 } 765 766 clearout: 767 spin_unlock_bh(&adapter->mac_vlan_list_lock); 768 return f; 769 } 770 771 /** 772 * iavf_del_vlan - Remove a vlan filter from the list 773 * @adapter: board private structure 774 * @vlan: VLAN tag 775 **/ 776 static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan) 777 { 778 struct iavf_vlan_filter *f; 779 780 spin_lock_bh(&adapter->mac_vlan_list_lock); 781 782 f = iavf_find_vlan(adapter, vlan); 783 if (f) { 784 /* IAVF_ADD_VLAN means that VLAN wasn't even added yet. 785 * Remove it from the list. 786 */ 787 if (f->state == IAVF_VLAN_ADD) { 788 list_del(&f->list); 789 kfree(f); 790 adapter->num_vlan_filters--; 791 } else { 792 f->state = IAVF_VLAN_REMOVE; 793 iavf_schedule_aq_request(adapter, 794 IAVF_FLAG_AQ_DEL_VLAN_FILTER); 795 } 796 } 797 798 spin_unlock_bh(&adapter->mac_vlan_list_lock); 799 } 800 801 /** 802 * iavf_restore_filters 803 * @adapter: board private structure 804 * 805 * Restore existing non MAC filters when VF netdev comes back up 806 **/ 807 static void iavf_restore_filters(struct iavf_adapter *adapter) 808 { 809 struct iavf_vlan_filter *f; 810 811 /* re-add all VLAN filters */ 812 spin_lock_bh(&adapter->mac_vlan_list_lock); 813 814 list_for_each_entry(f, &adapter->vlan_filter_list, list) { 815 if (f->state == IAVF_VLAN_INACTIVE) 816 f->state = IAVF_VLAN_ADD; 817 } 818 819 spin_unlock_bh(&adapter->mac_vlan_list_lock); 820 adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER; 821 } 822 823 /** 824 * iavf_get_num_vlans_added - get number of VLANs added 825 * @adapter: board private structure 826 */ 827 u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter) 828 { 829 return adapter->num_vlan_filters; 830 } 831 832 /** 833 * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF 834 * @adapter: board private structure 835 * 836 * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN, 837 * do not impose a limit as that maintains current behavior and for 838 * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF. 839 **/ 840 static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter) 841 { 842 /* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has 843 * never been a limit on the VF driver side 844 */ 845 if (VLAN_ALLOWED(adapter)) 846 return VLAN_N_VID; 847 else if (VLAN_V2_ALLOWED(adapter)) 848 return adapter->vlan_v2_caps.filtering.max_filters; 849 850 return 0; 851 } 852 853 /** 854 * iavf_max_vlans_added - check if maximum VLANs allowed already exist 855 * @adapter: board private structure 856 **/ 857 static bool iavf_max_vlans_added(struct iavf_adapter *adapter) 858 { 859 if (iavf_get_num_vlans_added(adapter) < 860 iavf_get_max_vlans_allowed(adapter)) 861 return false; 862 863 return true; 864 } 865 866 /** 867 * iavf_vlan_rx_add_vid - Add a VLAN filter to a device 868 * @netdev: network device struct 869 * @proto: unused protocol data 870 * @vid: VLAN tag 871 **/ 872 static int iavf_vlan_rx_add_vid(struct net_device *netdev, 873 __always_unused __be16 proto, u16 vid) 874 { 875 struct iavf_adapter *adapter = netdev_priv(netdev); 876 877 /* Do not track VLAN 0 filter, always added by the PF on VF init */ 878 if (!vid) 879 return 0; 880 881 if (!VLAN_FILTERING_ALLOWED(adapter)) 882 return -EIO; 883 884 if (iavf_max_vlans_added(adapter)) { 885 netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n", 886 iavf_get_max_vlans_allowed(adapter)); 887 return -EIO; 888 } 889 890 if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)))) 891 return -ENOMEM; 892 893 return 0; 894 } 895 896 /** 897 * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device 898 * @netdev: network device struct 899 * @proto: unused protocol data 900 * @vid: VLAN tag 901 **/ 902 static int iavf_vlan_rx_kill_vid(struct net_device *netdev, 903 __always_unused __be16 proto, u16 vid) 904 { 905 struct iavf_adapter *adapter = netdev_priv(netdev); 906 907 /* We do not track VLAN 0 filter */ 908 if (!vid) 909 return 0; 910 911 iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))); 912 return 0; 913 } 914 915 /** 916 * iavf_find_filter - Search filter list for specific mac filter 917 * @adapter: board private structure 918 * @macaddr: the MAC address 919 * 920 * Returns ptr to the filter object or NULL. Must be called while holding the 921 * mac_vlan_list_lock. 922 **/ 923 static struct 924 iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter, 925 const u8 *macaddr) 926 { 927 struct iavf_mac_filter *f; 928 929 if (!macaddr) 930 return NULL; 931 932 list_for_each_entry(f, &adapter->mac_filter_list, list) { 933 if (ether_addr_equal(macaddr, f->macaddr)) 934 return f; 935 } 936 return NULL; 937 } 938 939 /** 940 * iavf_add_filter - Add a mac filter to the filter list 941 * @adapter: board private structure 942 * @macaddr: the MAC address 943 * 944 * Returns ptr to the filter object or NULL when no memory available. 945 **/ 946 struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter, 947 const u8 *macaddr) 948 { 949 struct iavf_mac_filter *f; 950 951 if (!macaddr) 952 return NULL; 953 954 f = iavf_find_filter(adapter, macaddr); 955 if (!f) { 956 f = kzalloc_obj(*f, GFP_ATOMIC); 957 if (!f) 958 return f; 959 960 ether_addr_copy(f->macaddr, macaddr); 961 962 list_add_tail(&f->list, &adapter->mac_filter_list); 963 f->add = true; 964 f->add_handled = false; 965 f->is_new_mac = true; 966 f->is_primary = ether_addr_equal(macaddr, adapter->hw.mac.addr); 967 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 968 } else { 969 f->remove = false; 970 } 971 972 return f; 973 } 974 975 /** 976 * iavf_replace_primary_mac - Replace current primary address 977 * @adapter: board private structure 978 * @new_mac: new MAC address to be applied 979 * 980 * Replace current dev_addr and send request to PF for removal of previous 981 * primary MAC address filter and addition of new primary MAC filter. 982 * Return 0 for success, -ENOMEM for failure. 983 * 984 * Do not call this with mac_vlan_list_lock! 985 **/ 986 static int iavf_replace_primary_mac(struct iavf_adapter *adapter, 987 const u8 *new_mac) 988 { 989 struct iavf_hw *hw = &adapter->hw; 990 struct iavf_mac_filter *new_f; 991 struct iavf_mac_filter *old_f; 992 993 spin_lock_bh(&adapter->mac_vlan_list_lock); 994 995 new_f = iavf_add_filter(adapter, new_mac); 996 if (!new_f) { 997 spin_unlock_bh(&adapter->mac_vlan_list_lock); 998 return -ENOMEM; 999 } 1000 1001 old_f = iavf_find_filter(adapter, hw->mac.addr); 1002 if (old_f) { 1003 old_f->is_primary = false; 1004 old_f->remove = true; 1005 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1006 } 1007 /* Always send the request to add if changing primary MAC, 1008 * even if filter is already present on the list 1009 */ 1010 new_f->is_primary = true; 1011 new_f->add = true; 1012 ether_addr_copy(hw->mac.addr, new_mac); 1013 1014 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1015 1016 /* schedule the watchdog task to immediately process the request */ 1017 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_MAC_FILTER); 1018 return 0; 1019 } 1020 1021 /** 1022 * iavf_is_mac_set_handled - wait for a response to set MAC from PF 1023 * @netdev: network interface device structure 1024 * @macaddr: MAC address to set 1025 * 1026 * Returns true on success, false on failure 1027 */ 1028 static bool iavf_is_mac_set_handled(struct net_device *netdev, 1029 const u8 *macaddr) 1030 { 1031 struct iavf_adapter *adapter = netdev_priv(netdev); 1032 struct iavf_mac_filter *f; 1033 bool ret = false; 1034 1035 spin_lock_bh(&adapter->mac_vlan_list_lock); 1036 1037 f = iavf_find_filter(adapter, macaddr); 1038 1039 if (!f || (!f->add && f->add_handled)) 1040 ret = true; 1041 1042 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1043 1044 return ret; 1045 } 1046 1047 /** 1048 * iavf_set_mac - NDO callback to set port MAC address 1049 * @netdev: network interface device structure 1050 * @p: pointer to an address structure 1051 * 1052 * Returns 0 on success, negative on failure 1053 */ 1054 static int iavf_set_mac(struct net_device *netdev, void *p) 1055 { 1056 struct iavf_adapter *adapter = netdev_priv(netdev); 1057 struct sockaddr *addr = p; 1058 int ret; 1059 1060 if (!is_valid_ether_addr(addr->sa_data)) 1061 return -EADDRNOTAVAIL; 1062 1063 ret = iavf_replace_primary_mac(adapter, addr->sa_data); 1064 1065 if (ret) 1066 return ret; 1067 1068 ret = wait_event_interruptible_timeout(adapter->vc_waitqueue, 1069 iavf_is_mac_set_handled(netdev, addr->sa_data), 1070 msecs_to_jiffies(2500)); 1071 1072 /* If ret < 0 then it means wait was interrupted. 1073 * If ret == 0 then it means we got a timeout. 1074 * else it means we got response for set MAC from PF, 1075 * check if netdev MAC was updated to requested MAC, 1076 * if yes then set MAC succeeded otherwise it failed return -EACCES 1077 */ 1078 if (ret < 0) 1079 return ret; 1080 1081 if (!ret) 1082 return -EAGAIN; 1083 1084 if (!ether_addr_equal(netdev->dev_addr, addr->sa_data)) 1085 return -EACCES; 1086 1087 return 0; 1088 } 1089 1090 /** 1091 * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address 1092 * @netdev: the netdevice 1093 * @addr: address to add 1094 * 1095 * Called by __dev_(mc|uc)_sync when an address needs to be added. We call 1096 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1097 */ 1098 static int iavf_addr_sync(struct net_device *netdev, const u8 *addr) 1099 { 1100 struct iavf_adapter *adapter = netdev_priv(netdev); 1101 1102 if (iavf_add_filter(adapter, addr)) 1103 return 0; 1104 else 1105 return -ENOMEM; 1106 } 1107 1108 /** 1109 * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address 1110 * @netdev: the netdevice 1111 * @addr: address to add 1112 * 1113 * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call 1114 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1115 */ 1116 static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr) 1117 { 1118 struct iavf_adapter *adapter = netdev_priv(netdev); 1119 struct iavf_mac_filter *f; 1120 1121 /* Under some circumstances, we might receive a request to delete 1122 * our own device address from our uc list. Because we store the 1123 * device address in the VSI's MAC/VLAN filter list, we need to ignore 1124 * such requests and not delete our device address from this list. 1125 */ 1126 if (ether_addr_equal(addr, netdev->dev_addr)) 1127 return 0; 1128 1129 f = iavf_find_filter(adapter, addr); 1130 if (f) { 1131 f->remove = true; 1132 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1133 } 1134 return 0; 1135 } 1136 1137 /** 1138 * iavf_promiscuous_mode_changed - check if promiscuous mode bits changed 1139 * @adapter: device specific adapter 1140 */ 1141 bool iavf_promiscuous_mode_changed(struct iavf_adapter *adapter) 1142 { 1143 return (adapter->current_netdev_promisc_flags ^ adapter->netdev->flags) & 1144 (IFF_PROMISC | IFF_ALLMULTI); 1145 } 1146 1147 /** 1148 * iavf_set_rx_mode - NDO callback to set the netdev filters 1149 * @netdev: network interface device structure 1150 **/ 1151 static void iavf_set_rx_mode(struct net_device *netdev) 1152 { 1153 struct iavf_adapter *adapter = netdev_priv(netdev); 1154 1155 spin_lock_bh(&adapter->mac_vlan_list_lock); 1156 __dev_uc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); 1157 __dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); 1158 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1159 1160 spin_lock_bh(&adapter->current_netdev_promisc_flags_lock); 1161 if (iavf_promiscuous_mode_changed(adapter)) 1162 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE; 1163 spin_unlock_bh(&adapter->current_netdev_promisc_flags_lock); 1164 } 1165 1166 /** 1167 * iavf_napi_enable_all - enable NAPI on all queue vectors 1168 * @adapter: board private structure 1169 **/ 1170 static void iavf_napi_enable_all(struct iavf_adapter *adapter) 1171 { 1172 int q_idx; 1173 struct iavf_q_vector *q_vector; 1174 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1175 1176 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1177 struct napi_struct *napi; 1178 1179 q_vector = &adapter->q_vectors[q_idx]; 1180 napi = &q_vector->napi; 1181 napi_enable_locked(napi); 1182 } 1183 } 1184 1185 /** 1186 * iavf_napi_disable_all - disable NAPI on all queue vectors 1187 * @adapter: board private structure 1188 **/ 1189 static void iavf_napi_disable_all(struct iavf_adapter *adapter) 1190 { 1191 int q_idx; 1192 struct iavf_q_vector *q_vector; 1193 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1194 1195 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1196 q_vector = &adapter->q_vectors[q_idx]; 1197 napi_disable_locked(&q_vector->napi); 1198 } 1199 } 1200 1201 /** 1202 * iavf_configure - set up transmit and receive data structures 1203 * @adapter: board private structure 1204 **/ 1205 static void iavf_configure(struct iavf_adapter *adapter) 1206 { 1207 struct net_device *netdev = adapter->netdev; 1208 int i; 1209 1210 iavf_set_rx_mode(netdev); 1211 1212 iavf_configure_tx(adapter); 1213 iavf_configure_rx(adapter); 1214 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES; 1215 1216 for (i = 0; i < adapter->num_active_queues; i++) { 1217 struct iavf_ring *ring = &adapter->rx_rings[i]; 1218 1219 iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring)); 1220 } 1221 } 1222 1223 /** 1224 * iavf_up_complete - Finish the last steps of bringing up a connection 1225 * @adapter: board private structure 1226 */ 1227 static void iavf_up_complete(struct iavf_adapter *adapter) 1228 { 1229 netdev_assert_locked(adapter->netdev); 1230 1231 iavf_change_state(adapter, __IAVF_RUNNING); 1232 clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1233 1234 iavf_napi_enable_all(adapter); 1235 1236 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ENABLE_QUEUES); 1237 } 1238 1239 /** 1240 * iavf_clear_mac_vlan_filters - Remove mac and vlan filters not sent to PF 1241 * yet and mark other to be removed. 1242 * @adapter: board private structure 1243 **/ 1244 static void iavf_clear_mac_vlan_filters(struct iavf_adapter *adapter) 1245 { 1246 struct iavf_vlan_filter *vlf, *vlftmp; 1247 struct iavf_mac_filter *f, *ftmp; 1248 1249 spin_lock_bh(&adapter->mac_vlan_list_lock); 1250 /* clear the sync flag on all filters */ 1251 __dev_uc_unsync(adapter->netdev, NULL); 1252 __dev_mc_unsync(adapter->netdev, NULL); 1253 1254 /* remove all MAC filters */ 1255 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, 1256 list) { 1257 if (f->add) { 1258 list_del(&f->list); 1259 kfree(f); 1260 } else { 1261 f->remove = true; 1262 } 1263 } 1264 1265 /* disable all VLAN filters */ 1266 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 1267 list) 1268 vlf->state = IAVF_VLAN_DISABLE; 1269 1270 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1271 } 1272 1273 /** 1274 * iavf_clear_cloud_filters - Remove cloud filters not sent to PF yet and 1275 * mark other to be removed. 1276 * @adapter: board private structure 1277 **/ 1278 static void iavf_clear_cloud_filters(struct iavf_adapter *adapter) 1279 { 1280 struct iavf_cloud_filter *cf, *cftmp; 1281 1282 /* remove all cloud filters */ 1283 spin_lock_bh(&adapter->cloud_filter_list_lock); 1284 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 1285 list) { 1286 if (cf->add) { 1287 list_del(&cf->list); 1288 kfree(cf); 1289 adapter->num_cloud_filters--; 1290 } else { 1291 cf->del = true; 1292 } 1293 } 1294 spin_unlock_bh(&adapter->cloud_filter_list_lock); 1295 } 1296 1297 /** 1298 * iavf_clear_fdir_filters - Remove fdir filters not sent to PF yet and mark 1299 * other to be removed. 1300 * @adapter: board private structure 1301 **/ 1302 static void iavf_clear_fdir_filters(struct iavf_adapter *adapter) 1303 { 1304 struct iavf_fdir_fltr *fdir; 1305 1306 /* remove all Flow Director filters */ 1307 spin_lock_bh(&adapter->fdir_fltr_lock); 1308 list_for_each_entry(fdir, &adapter->fdir_list_head, list) { 1309 if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST) { 1310 /* Cancel a request, keep filter as inactive */ 1311 fdir->state = IAVF_FDIR_FLTR_INACTIVE; 1312 } else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING || 1313 fdir->state == IAVF_FDIR_FLTR_ACTIVE) { 1314 /* Disable filters which are active or have a pending 1315 * request to PF to be added 1316 */ 1317 fdir->state = IAVF_FDIR_FLTR_DIS_REQUEST; 1318 } 1319 } 1320 spin_unlock_bh(&adapter->fdir_fltr_lock); 1321 } 1322 1323 /** 1324 * iavf_clear_adv_rss_conf - Remove adv rss conf not sent to PF yet and mark 1325 * other to be removed. 1326 * @adapter: board private structure 1327 **/ 1328 static void iavf_clear_adv_rss_conf(struct iavf_adapter *adapter) 1329 { 1330 struct iavf_adv_rss *rss, *rsstmp; 1331 1332 /* remove all advance RSS configuration */ 1333 spin_lock_bh(&adapter->adv_rss_lock); 1334 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 1335 list) { 1336 if (rss->state == IAVF_ADV_RSS_ADD_REQUEST) { 1337 list_del(&rss->list); 1338 kfree(rss); 1339 } else { 1340 rss->state = IAVF_ADV_RSS_DEL_REQUEST; 1341 } 1342 } 1343 spin_unlock_bh(&adapter->adv_rss_lock); 1344 } 1345 1346 /** 1347 * iavf_down - Shutdown the connection processing 1348 * @adapter: board private structure 1349 */ 1350 void iavf_down(struct iavf_adapter *adapter) 1351 { 1352 struct net_device *netdev = adapter->netdev; 1353 1354 netdev_assert_locked(netdev); 1355 1356 if (adapter->state <= __IAVF_DOWN_PENDING) 1357 return; 1358 1359 netif_carrier_off(netdev); 1360 netif_tx_disable(netdev); 1361 adapter->link_up = false; 1362 iavf_napi_disable_all(adapter); 1363 iavf_irq_disable(adapter); 1364 1365 iavf_clear_mac_vlan_filters(adapter); 1366 iavf_clear_cloud_filters(adapter); 1367 iavf_clear_fdir_filters(adapter); 1368 iavf_clear_adv_rss_conf(adapter); 1369 1370 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 1371 return; 1372 1373 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 1374 /* cancel any current operation */ 1375 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 1376 /* Schedule operations to close down the HW. Don't wait 1377 * here for this to complete. The watchdog is still running 1378 * and it will take care of this. 1379 */ 1380 if (!list_empty(&adapter->mac_filter_list)) 1381 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1382 if (!list_empty(&adapter->vlan_filter_list)) 1383 adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; 1384 if (!list_empty(&adapter->cloud_filter_list)) 1385 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 1386 if (!list_empty(&adapter->fdir_list_head)) 1387 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 1388 if (!list_empty(&adapter->adv_rss_list_head)) 1389 adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG; 1390 } 1391 1392 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_DISABLE_QUEUES); 1393 } 1394 1395 /** 1396 * iavf_acquire_msix_vectors - Setup the MSIX capability 1397 * @adapter: board private structure 1398 * @vectors: number of vectors to request 1399 * 1400 * Work with the OS to set up the MSIX vectors needed. 1401 * 1402 * Returns 0 on success, negative on failure 1403 **/ 1404 static int 1405 iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors) 1406 { 1407 int err, vector_threshold; 1408 1409 /* We'll want at least 3 (vector_threshold): 1410 * 0) Other (Admin Queue and link, mostly) 1411 * 1) TxQ[0] Cleanup 1412 * 2) RxQ[0] Cleanup 1413 */ 1414 vector_threshold = MIN_MSIX_COUNT; 1415 1416 /* The more we get, the more we will assign to Tx/Rx Cleanup 1417 * for the separate queues...where Rx Cleanup >= Tx Cleanup. 1418 * Right now, we simply care about how many we'll get; we'll 1419 * set them up later while requesting irq's. 1420 */ 1421 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, 1422 vector_threshold, vectors); 1423 if (err < 0) { 1424 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); 1425 kfree(adapter->msix_entries); 1426 adapter->msix_entries = NULL; 1427 return err; 1428 } 1429 1430 /* Adjust for only the vectors we'll use, which is minimum 1431 * of max_msix_q_vectors + NONQ_VECS, or the number of 1432 * vectors we were allocated. 1433 */ 1434 adapter->num_msix_vectors = err; 1435 return 0; 1436 } 1437 1438 /** 1439 * iavf_free_queues - Free memory for all rings 1440 * @adapter: board private structure to initialize 1441 * 1442 * Free all of the memory associated with queue pairs. 1443 **/ 1444 static void iavf_free_queues(struct iavf_adapter *adapter) 1445 { 1446 if (!adapter->vsi_res) 1447 return; 1448 adapter->num_active_queues = 0; 1449 kfree(adapter->tx_rings); 1450 adapter->tx_rings = NULL; 1451 kfree(adapter->rx_rings); 1452 adapter->rx_rings = NULL; 1453 } 1454 1455 /** 1456 * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload 1457 * @adapter: board private structure 1458 * 1459 * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or 1460 * stripped in certain descriptor fields. Instead of checking the offload 1461 * capability bits in the hot path, cache the location the ring specific 1462 * flags. 1463 */ 1464 void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter) 1465 { 1466 int i; 1467 1468 for (i = 0; i < adapter->num_active_queues; i++) { 1469 struct iavf_ring *tx_ring = &adapter->tx_rings[i]; 1470 struct iavf_ring *rx_ring = &adapter->rx_rings[i]; 1471 1472 /* prevent multiple L2TAG bits being set after VFR */ 1473 tx_ring->flags &= 1474 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1475 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2); 1476 rx_ring->flags &= 1477 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1478 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2); 1479 1480 if (VLAN_ALLOWED(adapter)) { 1481 tx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1482 rx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1483 } else if (VLAN_V2_ALLOWED(adapter)) { 1484 struct virtchnl_vlan_supported_caps *stripping_support; 1485 struct virtchnl_vlan_supported_caps *insertion_support; 1486 1487 stripping_support = 1488 &adapter->vlan_v2_caps.offloads.stripping_support; 1489 insertion_support = 1490 &adapter->vlan_v2_caps.offloads.insertion_support; 1491 1492 if (stripping_support->outer) { 1493 if (stripping_support->outer & 1494 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1495 rx_ring->flags |= 1496 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1497 else if (stripping_support->outer & 1498 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1499 rx_ring->flags |= 1500 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1501 } else if (stripping_support->inner) { 1502 if (stripping_support->inner & 1503 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1504 rx_ring->flags |= 1505 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1506 else if (stripping_support->inner & 1507 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1508 rx_ring->flags |= 1509 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1510 } 1511 1512 if (insertion_support->outer) { 1513 if (insertion_support->outer & 1514 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1515 tx_ring->flags |= 1516 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1517 else if (insertion_support->outer & 1518 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1519 tx_ring->flags |= 1520 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1521 } else if (insertion_support->inner) { 1522 if (insertion_support->inner & 1523 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1524 tx_ring->flags |= 1525 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1526 else if (insertion_support->inner & 1527 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1528 tx_ring->flags |= 1529 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1530 } 1531 } 1532 } 1533 } 1534 1535 /** 1536 * iavf_alloc_queues - Allocate memory for all rings 1537 * @adapter: board private structure to initialize 1538 * 1539 * We allocate one ring per queue at run-time since we don't know the 1540 * number of queues at compile-time. The polling_netdev array is 1541 * intended for Multiqueue, but should work fine with a single queue. 1542 **/ 1543 static int iavf_alloc_queues(struct iavf_adapter *adapter) 1544 { 1545 int i, num_active_queues; 1546 1547 /* If we're in reset reallocating queues we don't actually know yet for 1548 * certain the PF gave us the number of queues we asked for but we'll 1549 * assume it did. Once basic reset is finished we'll confirm once we 1550 * start negotiating config with PF. 1551 */ 1552 if (adapter->num_req_queues) 1553 num_active_queues = adapter->num_req_queues; 1554 else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1555 adapter->num_tc) 1556 num_active_queues = adapter->ch_config.total_qps; 1557 else 1558 num_active_queues = min_t(int, 1559 adapter->vsi_res->num_queue_pairs, 1560 (int)(num_online_cpus())); 1561 1562 1563 adapter->tx_rings = kzalloc_objs(struct iavf_ring, num_active_queues); 1564 if (!adapter->tx_rings) 1565 goto err_out; 1566 adapter->rx_rings = kzalloc_objs(struct iavf_ring, num_active_queues); 1567 if (!adapter->rx_rings) 1568 goto err_out; 1569 1570 for (i = 0; i < num_active_queues; i++) { 1571 struct iavf_ring *tx_ring; 1572 struct iavf_ring *rx_ring; 1573 1574 tx_ring = &adapter->tx_rings[i]; 1575 1576 tx_ring->queue_index = i; 1577 tx_ring->netdev = adapter->netdev; 1578 tx_ring->dev = &adapter->pdev->dev; 1579 tx_ring->count = adapter->tx_desc_count; 1580 tx_ring->itr_setting = IAVF_ITR_TX_DEF; 1581 if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE) 1582 tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR; 1583 1584 rx_ring = &adapter->rx_rings[i]; 1585 rx_ring->queue_index = i; 1586 rx_ring->netdev = adapter->netdev; 1587 rx_ring->count = adapter->rx_desc_count; 1588 rx_ring->itr_setting = IAVF_ITR_RX_DEF; 1589 } 1590 1591 adapter->num_active_queues = num_active_queues; 1592 1593 iavf_set_queue_vlan_tag_loc(adapter); 1594 1595 return 0; 1596 1597 err_out: 1598 iavf_free_queues(adapter); 1599 return -ENOMEM; 1600 } 1601 1602 /** 1603 * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported 1604 * @adapter: board private structure to initialize 1605 * 1606 * Attempt to configure the interrupts using the best available 1607 * capabilities of the hardware and the kernel. 1608 **/ 1609 static int iavf_set_interrupt_capability(struct iavf_adapter *adapter) 1610 { 1611 int vector, v_budget; 1612 int pairs = 0; 1613 int err = 0; 1614 1615 if (!adapter->vsi_res) { 1616 err = -EIO; 1617 goto out; 1618 } 1619 pairs = adapter->num_active_queues; 1620 1621 /* It's easy to be greedy for MSI-X vectors, but it really doesn't do 1622 * us much good if we have more vectors than CPUs. However, we already 1623 * limit the total number of queues by the number of CPUs so we do not 1624 * need any further limiting here. 1625 */ 1626 v_budget = min_t(int, pairs + NONQ_VECS, 1627 (int)adapter->vf_res->max_vectors); 1628 1629 adapter->msix_entries = kzalloc_objs(struct msix_entry, v_budget); 1630 if (!adapter->msix_entries) { 1631 err = -ENOMEM; 1632 goto out; 1633 } 1634 1635 for (vector = 0; vector < v_budget; vector++) 1636 adapter->msix_entries[vector].entry = vector; 1637 1638 err = iavf_acquire_msix_vectors(adapter, v_budget); 1639 if (!err) 1640 iavf_schedule_finish_config(adapter); 1641 1642 out: 1643 return err; 1644 } 1645 1646 /** 1647 * iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands 1648 * @adapter: board private structure 1649 * 1650 * Return 0 on success, negative on failure 1651 **/ 1652 static int iavf_config_rss_aq(struct iavf_adapter *adapter) 1653 { 1654 struct iavf_aqc_get_set_rss_key_data *rss_key = 1655 (struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key; 1656 struct iavf_hw *hw = &adapter->hw; 1657 enum iavf_status status; 1658 1659 if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) { 1660 /* bail because we already have a command pending */ 1661 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", 1662 adapter->current_op); 1663 return -EBUSY; 1664 } 1665 1666 status = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); 1667 if (status) { 1668 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", 1669 iavf_stat_str(hw, status), 1670 libie_aq_str(hw->aq.asq_last_status)); 1671 return iavf_status_to_errno(status); 1672 1673 } 1674 1675 status = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false, 1676 adapter->rss_lut, adapter->rss_lut_size); 1677 if (status) { 1678 dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", 1679 iavf_stat_str(hw, status), 1680 libie_aq_str(hw->aq.asq_last_status)); 1681 return iavf_status_to_errno(status); 1682 } 1683 1684 return 0; 1685 1686 } 1687 1688 /** 1689 * iavf_config_rss_reg - Configure RSS keys and lut by writing registers 1690 * @adapter: board private structure 1691 * 1692 * Returns 0 on success, negative on failure 1693 **/ 1694 static int iavf_config_rss_reg(struct iavf_adapter *adapter) 1695 { 1696 struct iavf_hw *hw = &adapter->hw; 1697 u32 *dw; 1698 u16 i; 1699 1700 dw = (u32 *)adapter->rss_key; 1701 for (i = 0; i < adapter->rss_key_size / 4; i++) 1702 wr32(hw, IAVF_VFQF_HKEY(i), dw[i]); 1703 1704 dw = (u32 *)adapter->rss_lut; 1705 for (i = 0; i < adapter->rss_lut_size / 4; i++) 1706 wr32(hw, IAVF_VFQF_HLUT(i), dw[i]); 1707 1708 iavf_flush(hw); 1709 1710 return 0; 1711 } 1712 1713 /** 1714 * iavf_config_rss - Configure RSS keys and lut 1715 * @adapter: board private structure 1716 * 1717 * Returns 0 on success, negative on failure 1718 **/ 1719 int iavf_config_rss(struct iavf_adapter *adapter) 1720 { 1721 1722 if (RSS_PF(adapter)) { 1723 adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT | 1724 IAVF_FLAG_AQ_SET_RSS_KEY; 1725 return 0; 1726 } else if (RSS_AQ(adapter)) { 1727 return iavf_config_rss_aq(adapter); 1728 } else { 1729 return iavf_config_rss_reg(adapter); 1730 } 1731 } 1732 1733 /** 1734 * iavf_fill_rss_lut - Fill the lut with default values 1735 * @adapter: board private structure 1736 **/ 1737 static void iavf_fill_rss_lut(struct iavf_adapter *adapter) 1738 { 1739 u16 i; 1740 1741 for (i = 0; i < adapter->rss_lut_size; i++) 1742 adapter->rss_lut[i] = i % adapter->num_active_queues; 1743 } 1744 1745 /** 1746 * iavf_init_rss - Prepare for RSS 1747 * @adapter: board private structure 1748 * 1749 * Return 0 on success, negative on failure 1750 **/ 1751 static int iavf_init_rss(struct iavf_adapter *adapter) 1752 { 1753 struct iavf_hw *hw = &adapter->hw; 1754 1755 if (!RSS_PF(adapter)) { 1756 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ 1757 if (adapter->vf_res->vf_cap_flags & 1758 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) 1759 adapter->rss_hashcfg = 1760 IAVF_DEFAULT_RSS_HASHCFG_EXPANDED; 1761 else 1762 adapter->rss_hashcfg = IAVF_DEFAULT_RSS_HASHCFG; 1763 1764 wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->rss_hashcfg); 1765 wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->rss_hashcfg >> 32)); 1766 } 1767 1768 iavf_fill_rss_lut(adapter); 1769 netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); 1770 1771 return iavf_config_rss(adapter); 1772 } 1773 1774 /** 1775 * iavf_alloc_q_vectors - Allocate memory for interrupt vectors 1776 * @adapter: board private structure to initialize 1777 * 1778 * We allocate one q_vector per queue interrupt. If allocation fails we 1779 * return -ENOMEM. 1780 **/ 1781 static int iavf_alloc_q_vectors(struct iavf_adapter *adapter) 1782 { 1783 int q_idx = 0, num_q_vectors, irq_num; 1784 struct iavf_q_vector *q_vector; 1785 1786 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1787 adapter->q_vectors = kzalloc_objs(*q_vector, num_q_vectors); 1788 if (!adapter->q_vectors) 1789 return -ENOMEM; 1790 1791 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1792 irq_num = adapter->msix_entries[q_idx + NONQ_VECS].vector; 1793 q_vector = &adapter->q_vectors[q_idx]; 1794 q_vector->adapter = adapter; 1795 q_vector->vsi = &adapter->vsi; 1796 q_vector->v_idx = q_idx; 1797 q_vector->reg_idx = q_idx; 1798 netif_napi_add_config_locked(adapter->netdev, &q_vector->napi, 1799 iavf_napi_poll, q_idx); 1800 netif_napi_set_irq_locked(&q_vector->napi, irq_num); 1801 } 1802 1803 return 0; 1804 } 1805 1806 /** 1807 * iavf_free_q_vectors - Free memory allocated for interrupt vectors 1808 * @adapter: board private structure to initialize 1809 * 1810 * This function frees the memory allocated to the q_vectors. In addition if 1811 * NAPI is enabled it will delete any references to the NAPI struct prior 1812 * to freeing the q_vector. 1813 **/ 1814 static void iavf_free_q_vectors(struct iavf_adapter *adapter) 1815 { 1816 int q_idx, num_q_vectors; 1817 1818 if (!adapter->q_vectors) 1819 return; 1820 1821 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1822 1823 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1824 struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx]; 1825 1826 netif_napi_del_locked(&q_vector->napi); 1827 } 1828 kfree(adapter->q_vectors); 1829 adapter->q_vectors = NULL; 1830 } 1831 1832 /** 1833 * iavf_reset_interrupt_capability - Reset MSIX setup 1834 * @adapter: board private structure 1835 * 1836 **/ 1837 static void iavf_reset_interrupt_capability(struct iavf_adapter *adapter) 1838 { 1839 if (!adapter->msix_entries) 1840 return; 1841 1842 pci_disable_msix(adapter->pdev); 1843 kfree(adapter->msix_entries); 1844 adapter->msix_entries = NULL; 1845 } 1846 1847 /** 1848 * iavf_init_interrupt_scheme - Determine if MSIX is supported and init 1849 * @adapter: board private structure to initialize 1850 * 1851 **/ 1852 static int iavf_init_interrupt_scheme(struct iavf_adapter *adapter) 1853 { 1854 int err; 1855 1856 err = iavf_alloc_queues(adapter); 1857 if (err) { 1858 dev_err(&adapter->pdev->dev, 1859 "Unable to allocate memory for queues\n"); 1860 goto err_alloc_queues; 1861 } 1862 1863 err = iavf_set_interrupt_capability(adapter); 1864 if (err) { 1865 dev_err(&adapter->pdev->dev, 1866 "Unable to setup interrupt capabilities\n"); 1867 goto err_set_interrupt; 1868 } 1869 1870 err = iavf_alloc_q_vectors(adapter); 1871 if (err) { 1872 dev_err(&adapter->pdev->dev, 1873 "Unable to allocate memory for queue vectors\n"); 1874 goto err_alloc_q_vectors; 1875 } 1876 1877 /* If we've made it so far while ADq flag being ON, then we haven't 1878 * bailed out anywhere in middle. And ADq isn't just enabled but actual 1879 * resources have been allocated in the reset path. 1880 * Now we can truly claim that ADq is enabled. 1881 */ 1882 if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1883 adapter->num_tc) 1884 dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created", 1885 adapter->num_tc); 1886 1887 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", 1888 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", 1889 adapter->num_active_queues); 1890 1891 return 0; 1892 err_alloc_q_vectors: 1893 iavf_reset_interrupt_capability(adapter); 1894 err_set_interrupt: 1895 iavf_free_queues(adapter); 1896 err_alloc_queues: 1897 return err; 1898 } 1899 1900 /** 1901 * iavf_free_interrupt_scheme - Undo what iavf_init_interrupt_scheme does 1902 * @adapter: board private structure 1903 **/ 1904 static void iavf_free_interrupt_scheme(struct iavf_adapter *adapter) 1905 { 1906 iavf_free_q_vectors(adapter); 1907 iavf_reset_interrupt_capability(adapter); 1908 iavf_free_queues(adapter); 1909 } 1910 1911 /** 1912 * iavf_free_rss - Free memory used by RSS structs 1913 * @adapter: board private structure 1914 **/ 1915 static void iavf_free_rss(struct iavf_adapter *adapter) 1916 { 1917 kfree(adapter->rss_key); 1918 adapter->rss_key = NULL; 1919 1920 kfree(adapter->rss_lut); 1921 adapter->rss_lut = NULL; 1922 } 1923 1924 /** 1925 * iavf_reinit_interrupt_scheme - Reallocate queues and vectors 1926 * @adapter: board private structure 1927 * @running: true if adapter->state == __IAVF_RUNNING 1928 * 1929 * Returns 0 on success, negative on failure 1930 **/ 1931 static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter, bool running) 1932 { 1933 struct net_device *netdev = adapter->netdev; 1934 int err; 1935 1936 if (running) 1937 iavf_free_traffic_irqs(adapter); 1938 iavf_free_misc_irq(adapter); 1939 iavf_free_interrupt_scheme(adapter); 1940 1941 err = iavf_init_interrupt_scheme(adapter); 1942 if (err) 1943 goto err; 1944 1945 netif_tx_stop_all_queues(netdev); 1946 1947 err = iavf_request_misc_irq(adapter); 1948 if (err) 1949 goto err; 1950 1951 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1952 1953 iavf_map_rings_to_vectors(adapter); 1954 err: 1955 return err; 1956 } 1957 1958 /** 1959 * iavf_finish_config - do all netdev work that needs RTNL 1960 * @work: our work_struct 1961 * 1962 * Do work that needs RTNL. 1963 */ 1964 static void iavf_finish_config(struct work_struct *work) 1965 { 1966 struct iavf_adapter *adapter; 1967 bool netdev_released = false; 1968 int pairs, err; 1969 1970 adapter = container_of(work, struct iavf_adapter, finish_config); 1971 1972 /* Always take RTNL first to prevent circular lock dependency; 1973 * the dev->lock (== netdev lock) is needed to update the queue number. 1974 */ 1975 rtnl_lock(); 1976 netdev_lock(adapter->netdev); 1977 1978 if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES) && 1979 adapter->netdev->reg_state == NETREG_REGISTERED && 1980 !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 1981 netdev_update_features(adapter->netdev); 1982 adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; 1983 } 1984 1985 switch (adapter->state) { 1986 case __IAVF_DOWN: 1987 /* Set the real number of queues when reset occurs while 1988 * state == __IAVF_DOWN 1989 */ 1990 pairs = adapter->num_active_queues; 1991 netif_set_real_num_rx_queues(adapter->netdev, pairs); 1992 netif_set_real_num_tx_queues(adapter->netdev, pairs); 1993 1994 if (adapter->netdev->reg_state != NETREG_REGISTERED) { 1995 netdev_unlock(adapter->netdev); 1996 netdev_released = true; 1997 err = register_netdevice(adapter->netdev); 1998 if (err) { 1999 dev_err(&adapter->pdev->dev, "Unable to register netdev (%d)\n", 2000 err); 2001 2002 /* go back and try again.*/ 2003 netdev_lock(adapter->netdev); 2004 iavf_free_rss(adapter); 2005 iavf_free_misc_irq(adapter); 2006 iavf_reset_interrupt_capability(adapter); 2007 iavf_change_state(adapter, 2008 __IAVF_INIT_CONFIG_ADAPTER); 2009 netdev_unlock(adapter->netdev); 2010 goto out; 2011 } 2012 } 2013 break; 2014 case __IAVF_RUNNING: 2015 pairs = adapter->num_active_queues; 2016 netif_set_real_num_rx_queues(adapter->netdev, pairs); 2017 netif_set_real_num_tx_queues(adapter->netdev, pairs); 2018 break; 2019 2020 default: 2021 break; 2022 } 2023 2024 out: 2025 if (!netdev_released) 2026 netdev_unlock(adapter->netdev); 2027 rtnl_unlock(); 2028 } 2029 2030 /** 2031 * iavf_schedule_finish_config - Set the flags and schedule a reset event 2032 * @adapter: board private structure 2033 **/ 2034 void iavf_schedule_finish_config(struct iavf_adapter *adapter) 2035 { 2036 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 2037 queue_work(adapter->wq, &adapter->finish_config); 2038 } 2039 2040 /** 2041 * iavf_process_aq_command - process aq_required flags 2042 * and sends aq command 2043 * @adapter: pointer to iavf adapter structure 2044 * 2045 * Returns 0 on success 2046 * Returns error code if no command was sent 2047 * or error code if the command failed. 2048 **/ 2049 static int iavf_process_aq_command(struct iavf_adapter *adapter) 2050 { 2051 if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG) 2052 return iavf_send_vf_config_msg(adapter); 2053 if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS) 2054 return iavf_send_vf_offload_vlan_v2_msg(adapter); 2055 if (adapter->aq_required & IAVF_FLAG_AQ_GET_SUPPORTED_RXDIDS) 2056 return iavf_send_vf_supported_rxdids_msg(adapter); 2057 if (adapter->aq_required & IAVF_FLAG_AQ_GET_PTP_CAPS) 2058 return iavf_send_vf_ptp_caps_msg(adapter); 2059 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) { 2060 iavf_disable_queues(adapter); 2061 return 0; 2062 } 2063 2064 if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) { 2065 iavf_map_queues(adapter); 2066 return 0; 2067 } 2068 2069 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) { 2070 iavf_add_ether_addrs(adapter); 2071 return 0; 2072 } 2073 2074 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) { 2075 iavf_add_vlans(adapter); 2076 return 0; 2077 } 2078 2079 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) { 2080 iavf_del_ether_addrs(adapter); 2081 return 0; 2082 } 2083 2084 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) { 2085 iavf_del_vlans(adapter); 2086 return 0; 2087 } 2088 2089 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) { 2090 iavf_enable_vlan_stripping(adapter); 2091 return 0; 2092 } 2093 2094 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) { 2095 iavf_disable_vlan_stripping(adapter); 2096 return 0; 2097 } 2098 2099 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW) { 2100 iavf_cfg_queues_bw(adapter); 2101 return 0; 2102 } 2103 2104 if (adapter->aq_required & IAVF_FLAG_AQ_GET_QOS_CAPS) { 2105 iavf_get_qos_caps(adapter); 2106 return 0; 2107 } 2108 2109 if (adapter->aq_required & IAVF_FLAG_AQ_CFG_QUEUES_QUANTA_SIZE) { 2110 iavf_cfg_queues_quanta_size(adapter); 2111 return 0; 2112 } 2113 2114 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) { 2115 iavf_configure_queues(adapter); 2116 return 0; 2117 } 2118 2119 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) { 2120 iavf_enable_queues(adapter); 2121 return 0; 2122 } 2123 2124 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) { 2125 /* This message goes straight to the firmware, not the 2126 * PF, so we don't have to set current_op as we will 2127 * not get a response through the ARQ. 2128 */ 2129 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS; 2130 return 0; 2131 } 2132 if (adapter->aq_required & IAVF_FLAG_AQ_GET_RSS_HASHCFG) { 2133 iavf_get_rss_hashcfg(adapter); 2134 return 0; 2135 } 2136 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HASHCFG) { 2137 iavf_set_rss_hashcfg(adapter); 2138 return 0; 2139 } 2140 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) { 2141 iavf_set_rss_key(adapter); 2142 return 0; 2143 } 2144 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) { 2145 iavf_set_rss_lut(adapter); 2146 return 0; 2147 } 2148 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HFUNC) { 2149 iavf_set_rss_hfunc(adapter); 2150 return 0; 2151 } 2152 2153 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE) { 2154 iavf_set_promiscuous(adapter); 2155 return 0; 2156 } 2157 2158 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) { 2159 iavf_enable_channels(adapter); 2160 return 0; 2161 } 2162 2163 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) { 2164 iavf_disable_channels(adapter); 2165 return 0; 2166 } 2167 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) { 2168 iavf_add_cloud_filter(adapter); 2169 return 0; 2170 } 2171 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) { 2172 iavf_del_cloud_filter(adapter); 2173 return 0; 2174 } 2175 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) { 2176 iavf_add_fdir_filter(adapter); 2177 return IAVF_SUCCESS; 2178 } 2179 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) { 2180 iavf_del_fdir_filter(adapter); 2181 return IAVF_SUCCESS; 2182 } 2183 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) { 2184 iavf_add_adv_rss_cfg(adapter); 2185 return 0; 2186 } 2187 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) { 2188 iavf_del_adv_rss_cfg(adapter); 2189 return 0; 2190 } 2191 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) { 2192 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2193 return 0; 2194 } 2195 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) { 2196 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2197 return 0; 2198 } 2199 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) { 2200 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2201 return 0; 2202 } 2203 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) { 2204 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2205 return 0; 2206 } 2207 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) { 2208 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2209 return 0; 2210 } 2211 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) { 2212 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2213 return 0; 2214 } 2215 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) { 2216 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2217 return 0; 2218 } 2219 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) { 2220 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2221 return 0; 2222 } 2223 if (adapter->aq_required & IAVF_FLAG_AQ_SEND_PTP_CMD) { 2224 iavf_virtchnl_send_ptp_cmd(adapter); 2225 return IAVF_SUCCESS; 2226 } 2227 if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) { 2228 iavf_request_stats(adapter); 2229 return 0; 2230 } 2231 2232 return -EAGAIN; 2233 } 2234 2235 /** 2236 * iavf_set_vlan_offload_features - set VLAN offload configuration 2237 * @adapter: board private structure 2238 * @prev_features: previous features used for comparison 2239 * @features: updated features used for configuration 2240 * 2241 * Set the aq_required bit(s) based on the requested features passed in to 2242 * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule 2243 * the watchdog if any changes are requested to expedite the request via 2244 * virtchnl. 2245 **/ 2246 static void 2247 iavf_set_vlan_offload_features(struct iavf_adapter *adapter, 2248 netdev_features_t prev_features, 2249 netdev_features_t features) 2250 { 2251 bool enable_stripping = true, enable_insertion = true; 2252 u16 vlan_ethertype = 0; 2253 u64 aq_required = 0; 2254 2255 /* keep cases separate because one ethertype for offloads can be 2256 * disabled at the same time as another is disabled, so check for an 2257 * enabled ethertype first, then check for disabled. Default to 2258 * ETH_P_8021Q so an ethertype is specified if disabling insertion and 2259 * stripping. 2260 */ 2261 if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2262 vlan_ethertype = ETH_P_8021AD; 2263 else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2264 vlan_ethertype = ETH_P_8021Q; 2265 else if (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2266 vlan_ethertype = ETH_P_8021AD; 2267 else if (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2268 vlan_ethertype = ETH_P_8021Q; 2269 else 2270 vlan_ethertype = ETH_P_8021Q; 2271 2272 if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX))) 2273 enable_stripping = false; 2274 if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX))) 2275 enable_insertion = false; 2276 2277 if (VLAN_ALLOWED(adapter)) { 2278 /* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN 2279 * stripping via virtchnl. VLAN insertion can be toggled on the 2280 * netdev, but it doesn't require a virtchnl message 2281 */ 2282 if (enable_stripping) 2283 aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING; 2284 else 2285 aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING; 2286 2287 } else if (VLAN_V2_ALLOWED(adapter)) { 2288 switch (vlan_ethertype) { 2289 case ETH_P_8021Q: 2290 if (enable_stripping) 2291 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING; 2292 else 2293 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING; 2294 2295 if (enable_insertion) 2296 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION; 2297 else 2298 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION; 2299 break; 2300 case ETH_P_8021AD: 2301 if (enable_stripping) 2302 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING; 2303 else 2304 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING; 2305 2306 if (enable_insertion) 2307 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION; 2308 else 2309 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION; 2310 break; 2311 } 2312 } 2313 2314 if (aq_required) 2315 iavf_schedule_aq_request(adapter, aq_required); 2316 } 2317 2318 /** 2319 * iavf_startup - first step of driver startup 2320 * @adapter: board private structure 2321 * 2322 * Function process __IAVF_STARTUP driver state. 2323 * When success the state is changed to __IAVF_INIT_VERSION_CHECK 2324 * when fails the state is changed to __IAVF_INIT_FAILED 2325 **/ 2326 static void iavf_startup(struct iavf_adapter *adapter) 2327 { 2328 struct pci_dev *pdev = adapter->pdev; 2329 struct iavf_hw *hw = &adapter->hw; 2330 enum iavf_status status; 2331 int ret; 2332 2333 WARN_ON(adapter->state != __IAVF_STARTUP); 2334 2335 /* driver loaded, probe complete */ 2336 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2337 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 2338 2339 ret = iavf_check_reset_complete(hw); 2340 if (ret) { 2341 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", 2342 ret); 2343 goto err; 2344 } 2345 hw->aq.num_arq_entries = IAVF_AQ_LEN; 2346 hw->aq.num_asq_entries = IAVF_AQ_LEN; 2347 hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2348 hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2349 2350 status = iavf_init_adminq(hw); 2351 if (status) { 2352 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", 2353 status); 2354 goto err; 2355 } 2356 ret = iavf_send_api_ver(adapter); 2357 if (ret) { 2358 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", ret); 2359 iavf_shutdown_adminq(hw); 2360 goto err; 2361 } 2362 iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK); 2363 return; 2364 err: 2365 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2366 } 2367 2368 /** 2369 * iavf_init_version_check - second step of driver startup 2370 * @adapter: board private structure 2371 * 2372 * Function process __IAVF_INIT_VERSION_CHECK driver state. 2373 * When success the state is changed to __IAVF_INIT_GET_RESOURCES 2374 * when fails the state is changed to __IAVF_INIT_FAILED 2375 **/ 2376 static void iavf_init_version_check(struct iavf_adapter *adapter) 2377 { 2378 struct pci_dev *pdev = adapter->pdev; 2379 struct iavf_hw *hw = &adapter->hw; 2380 int err = -EAGAIN; 2381 2382 WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK); 2383 2384 if (!iavf_asq_done(hw)) { 2385 dev_err(&pdev->dev, "Admin queue command never completed\n"); 2386 iavf_shutdown_adminq(hw); 2387 iavf_change_state(adapter, __IAVF_STARTUP); 2388 goto err; 2389 } 2390 2391 /* aq msg sent, awaiting reply */ 2392 err = iavf_verify_api_ver(adapter); 2393 if (err) { 2394 if (err == -EALREADY) 2395 err = iavf_send_api_ver(adapter); 2396 else 2397 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", 2398 adapter->pf_version.major, 2399 adapter->pf_version.minor, 2400 VIRTCHNL_VERSION_MAJOR, 2401 VIRTCHNL_VERSION_MINOR); 2402 goto err; 2403 } 2404 err = iavf_send_vf_config_msg(adapter); 2405 if (err) { 2406 dev_err(&pdev->dev, "Unable to send config request (%d)\n", 2407 err); 2408 goto err; 2409 } 2410 iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES); 2411 return; 2412 err: 2413 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2414 } 2415 2416 /** 2417 * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES 2418 * @adapter: board private structure 2419 */ 2420 int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter) 2421 { 2422 int i, num_req_queues = adapter->num_req_queues; 2423 struct iavf_vsi *vsi = &adapter->vsi; 2424 2425 for (i = 0; i < adapter->vf_res->num_vsis; i++) { 2426 if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV) 2427 adapter->vsi_res = &adapter->vf_res->vsi_res[i]; 2428 } 2429 if (!adapter->vsi_res) { 2430 dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); 2431 return -ENODEV; 2432 } 2433 2434 if (num_req_queues && 2435 num_req_queues > adapter->vsi_res->num_queue_pairs) { 2436 /* Problem. The PF gave us fewer queues than what we had 2437 * negotiated in our request. Need a reset to see if we can't 2438 * get back to a working state. 2439 */ 2440 dev_err(&adapter->pdev->dev, 2441 "Requested %d queues, but PF only gave us %d.\n", 2442 num_req_queues, 2443 adapter->vsi_res->num_queue_pairs); 2444 adapter->flags |= IAVF_FLAG_REINIT_MSIX_NEEDED; 2445 adapter->num_req_queues = adapter->vsi_res->num_queue_pairs; 2446 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 2447 2448 return -EAGAIN; 2449 } 2450 adapter->num_req_queues = 0; 2451 adapter->vsi.id = adapter->vsi_res->vsi_id; 2452 2453 adapter->vsi.back = adapter; 2454 adapter->vsi.base_vector = 1; 2455 vsi->netdev = adapter->netdev; 2456 vsi->qs_handle = adapter->vsi_res->qset_handle; 2457 if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) { 2458 adapter->rss_key_size = adapter->vf_res->rss_key_size; 2459 adapter->rss_lut_size = adapter->vf_res->rss_lut_size; 2460 } else { 2461 adapter->rss_key_size = IAVF_HKEY_ARRAY_SIZE; 2462 adapter->rss_lut_size = IAVF_HLUT_ARRAY_SIZE; 2463 } 2464 2465 return 0; 2466 } 2467 2468 /** 2469 * iavf_init_get_resources - third step of driver startup 2470 * @adapter: board private structure 2471 * 2472 * Function process __IAVF_INIT_GET_RESOURCES driver state and 2473 * finishes driver initialization procedure. 2474 * When success the state is changed to __IAVF_DOWN 2475 * when fails the state is changed to __IAVF_INIT_FAILED 2476 **/ 2477 static void iavf_init_get_resources(struct iavf_adapter *adapter) 2478 { 2479 struct pci_dev *pdev = adapter->pdev; 2480 struct iavf_hw *hw = &adapter->hw; 2481 int err; 2482 2483 WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES); 2484 /* aq msg sent, awaiting reply */ 2485 if (!adapter->vf_res) { 2486 adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE, 2487 GFP_KERNEL); 2488 if (!adapter->vf_res) { 2489 err = -ENOMEM; 2490 goto err; 2491 } 2492 } 2493 err = iavf_get_vf_config(adapter); 2494 if (err == -EALREADY) { 2495 err = iavf_send_vf_config_msg(adapter); 2496 goto err; 2497 } else if (err == -EINVAL) { 2498 /* We only get -EINVAL if the device is in a very bad 2499 * state or if we've been disabled for previous bad 2500 * behavior. Either way, we're done now. 2501 */ 2502 iavf_shutdown_adminq(hw); 2503 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); 2504 return; 2505 } 2506 if (err) { 2507 dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err); 2508 goto err_alloc; 2509 } 2510 2511 err = iavf_parse_vf_resource_msg(adapter); 2512 if (err) { 2513 dev_err(&pdev->dev, "Failed to parse VF resource message from PF (%d)\n", 2514 err); 2515 goto err_alloc; 2516 } 2517 /* Some features require additional messages to negotiate extended 2518 * capabilities. These are processed in sequence by the 2519 * __IAVF_INIT_EXTENDED_CAPS driver state. 2520 */ 2521 adapter->extended_caps = IAVF_EXTENDED_CAPS; 2522 2523 iavf_change_state(adapter, __IAVF_INIT_EXTENDED_CAPS); 2524 return; 2525 2526 err_alloc: 2527 kfree(adapter->vf_res); 2528 adapter->vf_res = NULL; 2529 err: 2530 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2531 } 2532 2533 /** 2534 * iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2535 * @adapter: board private structure 2536 * 2537 * Function processes send of the extended VLAN V2 capability message to the 2538 * PF. Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent, 2539 * e.g. due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2. 2540 */ 2541 static void iavf_init_send_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2542 { 2543 int ret; 2544 2545 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2)); 2546 2547 ret = iavf_send_vf_offload_vlan_v2_msg(adapter); 2548 if (ret && ret == -EOPNOTSUPP) { 2549 /* PF does not support VIRTCHNL_VF_OFFLOAD_V2. In this case, 2550 * we did not send the capability exchange message and do not 2551 * expect a response. 2552 */ 2553 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2554 } 2555 2556 /* We sent the message, so move on to the next step */ 2557 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2558 } 2559 2560 /** 2561 * iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2562 * @adapter: board private structure 2563 * 2564 * Function processes receipt of the extended VLAN V2 capability message from 2565 * the PF. 2566 **/ 2567 static void iavf_init_recv_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2568 { 2569 int ret; 2570 2571 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2)); 2572 2573 memset(&adapter->vlan_v2_caps, 0, sizeof(adapter->vlan_v2_caps)); 2574 2575 ret = iavf_get_vf_vlan_v2_caps(adapter); 2576 if (ret) 2577 goto err; 2578 2579 /* We've processed receipt of the VLAN V2 caps message */ 2580 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2581 return; 2582 err: 2583 /* We didn't receive a reply. Make sure we try sending again when 2584 * __IAVF_INIT_FAILED attempts to recover. 2585 */ 2586 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2587 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2588 } 2589 2590 /** 2591 * iavf_init_send_supported_rxdids - part of querying for supported RXDID 2592 * formats 2593 * @adapter: board private structure 2594 * 2595 * Function processes send of the request for supported RXDIDs to the PF. 2596 * Must clear IAVF_EXTENDED_CAP_RECV_RXDID if the message is not sent, e.g. 2597 * due to the PF not negotiating VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. 2598 */ 2599 static void iavf_init_send_supported_rxdids(struct iavf_adapter *adapter) 2600 { 2601 int ret; 2602 2603 ret = iavf_send_vf_supported_rxdids_msg(adapter); 2604 if (ret == -EOPNOTSUPP) { 2605 /* PF does not support VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. In this 2606 * case, we did not send the capability exchange message and 2607 * do not expect a response. 2608 */ 2609 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; 2610 } 2611 2612 /* We sent the message, so move on to the next step */ 2613 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_RXDID; 2614 } 2615 2616 /** 2617 * iavf_init_recv_supported_rxdids - part of querying for supported RXDID 2618 * formats 2619 * @adapter: board private structure 2620 * 2621 * Function processes receipt of the supported RXDIDs message from the PF. 2622 **/ 2623 static void iavf_init_recv_supported_rxdids(struct iavf_adapter *adapter) 2624 { 2625 int ret; 2626 2627 memset(&adapter->supp_rxdids, 0, sizeof(adapter->supp_rxdids)); 2628 2629 ret = iavf_get_vf_supported_rxdids(adapter); 2630 if (ret) 2631 goto err; 2632 2633 /* We've processed the PF response to the 2634 * VIRTCHNL_OP_GET_SUPPORTED_RXDIDS message we sent previously. 2635 */ 2636 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; 2637 return; 2638 2639 err: 2640 /* We didn't receive a reply. Make sure we try sending again when 2641 * __IAVF_INIT_FAILED attempts to recover. 2642 */ 2643 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_RXDID; 2644 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2645 } 2646 2647 /** 2648 * iavf_init_send_ptp_caps - part of querying for extended PTP capabilities 2649 * @adapter: board private structure 2650 * 2651 * Function processes send of the request for 1588 PTP capabilities to the PF. 2652 * Must clear IAVF_EXTENDED_CAP_SEND_PTP if the message is not sent, e.g. 2653 * due to the PF not negotiating VIRTCHNL_VF_PTP_CAP 2654 */ 2655 static void iavf_init_send_ptp_caps(struct iavf_adapter *adapter) 2656 { 2657 if (iavf_send_vf_ptp_caps_msg(adapter) == -EOPNOTSUPP) { 2658 /* PF does not support VIRTCHNL_VF_PTP_CAP. In this case, we 2659 * did not send the capability exchange message and do not 2660 * expect a response. 2661 */ 2662 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; 2663 } 2664 2665 /* We sent the message, so move on to the next step */ 2666 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_PTP; 2667 } 2668 2669 /** 2670 * iavf_init_recv_ptp_caps - part of querying for supported PTP capabilities 2671 * @adapter: board private structure 2672 * 2673 * Function processes receipt of the PTP capabilities supported on this VF. 2674 **/ 2675 static void iavf_init_recv_ptp_caps(struct iavf_adapter *adapter) 2676 { 2677 memset(&adapter->ptp.hw_caps, 0, sizeof(adapter->ptp.hw_caps)); 2678 2679 if (iavf_get_vf_ptp_caps(adapter)) 2680 goto err; 2681 2682 /* We've processed the PF response to the VIRTCHNL_OP_1588_PTP_GET_CAPS 2683 * message we sent previously. 2684 */ 2685 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; 2686 return; 2687 2688 err: 2689 /* We didn't receive a reply. Make sure we try sending again when 2690 * __IAVF_INIT_FAILED attempts to recover. 2691 */ 2692 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_PTP; 2693 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2694 } 2695 2696 /** 2697 * iavf_init_process_extended_caps - Part of driver startup 2698 * @adapter: board private structure 2699 * 2700 * Function processes __IAVF_INIT_EXTENDED_CAPS driver state. This state 2701 * handles negotiating capabilities for features which require an additional 2702 * message. 2703 * 2704 * Once all extended capabilities exchanges are finished, the driver will 2705 * transition into __IAVF_INIT_CONFIG_ADAPTER. 2706 */ 2707 static void iavf_init_process_extended_caps(struct iavf_adapter *adapter) 2708 { 2709 WARN_ON(adapter->state != __IAVF_INIT_EXTENDED_CAPS); 2710 2711 /* Process capability exchange for VLAN V2 */ 2712 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2) { 2713 iavf_init_send_offload_vlan_v2_caps(adapter); 2714 return; 2715 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2) { 2716 iavf_init_recv_offload_vlan_v2_caps(adapter); 2717 return; 2718 } 2719 2720 /* Process capability exchange for RXDID formats */ 2721 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_RXDID) { 2722 iavf_init_send_supported_rxdids(adapter); 2723 return; 2724 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_RXDID) { 2725 iavf_init_recv_supported_rxdids(adapter); 2726 return; 2727 } 2728 2729 /* Process capability exchange for PTP features */ 2730 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_PTP) { 2731 iavf_init_send_ptp_caps(adapter); 2732 return; 2733 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_PTP) { 2734 iavf_init_recv_ptp_caps(adapter); 2735 return; 2736 } 2737 2738 /* When we reach here, no further extended capabilities exchanges are 2739 * necessary, so we finally transition into __IAVF_INIT_CONFIG_ADAPTER 2740 */ 2741 iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER); 2742 } 2743 2744 /** 2745 * iavf_init_config_adapter - last part of driver startup 2746 * @adapter: board private structure 2747 * 2748 * After all the supported capabilities are negotiated, then the 2749 * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization. 2750 */ 2751 static void iavf_init_config_adapter(struct iavf_adapter *adapter) 2752 { 2753 struct net_device *netdev = adapter->netdev; 2754 struct pci_dev *pdev = adapter->pdev; 2755 int err; 2756 2757 WARN_ON(adapter->state != __IAVF_INIT_CONFIG_ADAPTER); 2758 2759 if (iavf_process_config(adapter)) 2760 goto err; 2761 2762 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2763 2764 adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED; 2765 2766 netdev->netdev_ops = &iavf_netdev_ops; 2767 iavf_set_ethtool_ops(netdev); 2768 netdev->watchdog_timeo = 5 * HZ; 2769 2770 netdev->min_mtu = ETH_MIN_MTU; 2771 2772 /* PF/VF API: vf_res->max_mtu is max frame size (not MTU). 2773 * Convert to MTU. 2774 */ 2775 if (!adapter->vf_res->max_mtu) { 2776 netdev->max_mtu = LIBIE_MAX_MTU; 2777 } else if (adapter->vf_res->max_mtu < LIBETH_RX_LL_LEN + ETH_MIN_MTU || 2778 adapter->vf_res->max_mtu > 2779 LIBETH_RX_LL_LEN + LIBIE_MAX_MTU) { 2780 netdev_warn_once(adapter->netdev, 2781 "invalid max frame size %d from PF, using default MTU %d", 2782 adapter->vf_res->max_mtu, LIBIE_MAX_MTU); 2783 netdev->max_mtu = LIBIE_MAX_MTU; 2784 } else { 2785 netdev->max_mtu = adapter->vf_res->max_mtu - LIBETH_RX_LL_LEN; 2786 } 2787 2788 if (!is_valid_ether_addr(adapter->hw.mac.addr)) { 2789 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", 2790 adapter->hw.mac.addr); 2791 eth_hw_addr_random(netdev); 2792 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); 2793 } else { 2794 eth_hw_addr_set(netdev, adapter->hw.mac.addr); 2795 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); 2796 } 2797 2798 adapter->tx_desc_count = IAVF_DEFAULT_TXD; 2799 adapter->rx_desc_count = IAVF_DEFAULT_RXD; 2800 err = iavf_init_interrupt_scheme(adapter); 2801 if (err) 2802 goto err_sw_init; 2803 iavf_map_rings_to_vectors(adapter); 2804 if (adapter->vf_res->vf_cap_flags & 2805 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) 2806 adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE; 2807 2808 err = iavf_request_misc_irq(adapter); 2809 if (err) 2810 goto err_sw_init; 2811 2812 netif_carrier_off(netdev); 2813 adapter->link_up = false; 2814 netif_tx_stop_all_queues(netdev); 2815 2816 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); 2817 if (netdev->features & NETIF_F_GRO) 2818 dev_info(&pdev->dev, "GRO is enabled\n"); 2819 2820 iavf_change_state(adapter, __IAVF_DOWN); 2821 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 2822 2823 iavf_misc_irq_enable(adapter); 2824 wake_up(&adapter->down_waitqueue); 2825 2826 adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); 2827 adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); 2828 if (!adapter->rss_key || !adapter->rss_lut) { 2829 err = -ENOMEM; 2830 goto err_mem; 2831 } 2832 if (RSS_AQ(adapter)) 2833 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 2834 else 2835 iavf_init_rss(adapter); 2836 2837 if (VLAN_V2_ALLOWED(adapter)) 2838 /* request initial VLAN offload settings */ 2839 iavf_set_vlan_offload_features(adapter, 0, netdev->features); 2840 2841 if (QOS_ALLOWED(adapter)) 2842 adapter->aq_required |= IAVF_FLAG_AQ_GET_QOS_CAPS; 2843 2844 /* Setup initial PTP configuration */ 2845 iavf_ptp_init(adapter); 2846 2847 iavf_schedule_finish_config(adapter); 2848 return; 2849 2850 err_mem: 2851 iavf_free_rss(adapter); 2852 iavf_free_misc_irq(adapter); 2853 err_sw_init: 2854 iavf_reset_interrupt_capability(adapter); 2855 err: 2856 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2857 } 2858 2859 static const int IAVF_NO_RESCHED = -1; 2860 2861 /* return: msec delay for requeueing itself */ 2862 static int iavf_watchdog_step(struct iavf_adapter *adapter) 2863 { 2864 struct iavf_hw *hw = &adapter->hw; 2865 u32 reg_val; 2866 2867 netdev_assert_locked(adapter->netdev); 2868 2869 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 2870 iavf_change_state(adapter, __IAVF_COMM_FAILED); 2871 2872 switch (adapter->state) { 2873 case __IAVF_STARTUP: 2874 iavf_startup(adapter); 2875 return 30; 2876 case __IAVF_INIT_VERSION_CHECK: 2877 iavf_init_version_check(adapter); 2878 return 30; 2879 case __IAVF_INIT_GET_RESOURCES: 2880 iavf_init_get_resources(adapter); 2881 return 1; 2882 case __IAVF_INIT_EXTENDED_CAPS: 2883 iavf_init_process_extended_caps(adapter); 2884 return 1; 2885 case __IAVF_INIT_CONFIG_ADAPTER: 2886 iavf_init_config_adapter(adapter); 2887 return 1; 2888 case __IAVF_INIT_FAILED: 2889 if (test_bit(__IAVF_IN_REMOVE_TASK, 2890 &adapter->crit_section)) { 2891 /* Do not update the state and do not reschedule 2892 * watchdog task, iavf_remove should handle this state 2893 * as it can loop forever 2894 */ 2895 return IAVF_NO_RESCHED; 2896 } 2897 if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) { 2898 dev_err(&adapter->pdev->dev, 2899 "Failed to communicate with PF; waiting before retry\n"); 2900 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 2901 iavf_shutdown_adminq(hw); 2902 return 5000; 2903 } 2904 /* Try again from failed step*/ 2905 iavf_change_state(adapter, adapter->last_state); 2906 return 1000; 2907 case __IAVF_COMM_FAILED: 2908 if (test_bit(__IAVF_IN_REMOVE_TASK, 2909 &adapter->crit_section)) { 2910 /* Set state to __IAVF_INIT_FAILED and perform remove 2911 * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task 2912 * doesn't bring the state back to __IAVF_COMM_FAILED. 2913 */ 2914 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2915 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2916 return IAVF_NO_RESCHED; 2917 } 2918 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 2919 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 2920 if (reg_val == VIRTCHNL_VFR_VFACTIVE || 2921 reg_val == VIRTCHNL_VFR_COMPLETED) { 2922 /* A chance for redemption! */ 2923 dev_err(&adapter->pdev->dev, 2924 "Hardware came out of reset. Attempting reinit.\n"); 2925 /* When init task contacts the PF and 2926 * gets everything set up again, it'll restart the 2927 * watchdog for us. Down, boy. Sit. Stay. Woof. 2928 */ 2929 iavf_change_state(adapter, __IAVF_STARTUP); 2930 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2931 } 2932 adapter->aq_required = 0; 2933 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2934 return 10; 2935 case __IAVF_RESETTING: 2936 return 2000; 2937 case __IAVF_DOWN: 2938 case __IAVF_DOWN_PENDING: 2939 case __IAVF_TESTING: 2940 case __IAVF_RUNNING: 2941 if (adapter->current_op) { 2942 if (!iavf_asq_done(hw)) { 2943 dev_dbg(&adapter->pdev->dev, 2944 "Admin queue timeout\n"); 2945 iavf_send_api_ver(adapter); 2946 } 2947 } else { 2948 int ret = iavf_process_aq_command(adapter); 2949 2950 /* An error will be returned if no commands were 2951 * processed; use this opportunity to update stats 2952 * if the error isn't -ENOTSUPP 2953 */ 2954 if (ret && ret != -EOPNOTSUPP && 2955 adapter->state == __IAVF_RUNNING) 2956 iavf_request_stats(adapter); 2957 } 2958 if (adapter->state == __IAVF_RUNNING) 2959 iavf_detect_recover_hung(&adapter->vsi); 2960 break; 2961 case __IAVF_REMOVE: 2962 default: 2963 return IAVF_NO_RESCHED; 2964 } 2965 2966 /* check for hw reset */ 2967 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK; 2968 if (!reg_val) { 2969 adapter->aq_required = 0; 2970 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2971 dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); 2972 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_PENDING); 2973 } 2974 2975 return adapter->aq_required ? 20 : 2000; 2976 } 2977 2978 static void iavf_watchdog_task(struct work_struct *work) 2979 { 2980 struct iavf_adapter *adapter = container_of(work, 2981 struct iavf_adapter, 2982 watchdog_task.work); 2983 struct net_device *netdev = adapter->netdev; 2984 int msec_delay; 2985 2986 netdev_lock(netdev); 2987 msec_delay = iavf_watchdog_step(adapter); 2988 /* note that we schedule a different task */ 2989 if (adapter->state >= __IAVF_DOWN) 2990 queue_work(adapter->wq, &adapter->adminq_task); 2991 2992 if (msec_delay != IAVF_NO_RESCHED) 2993 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 2994 msecs_to_jiffies(msec_delay)); 2995 netdev_unlock(netdev); 2996 } 2997 2998 /** 2999 * iavf_disable_vf - disable VF 3000 * @adapter: board private structure 3001 * 3002 * Set communication failed flag and free all resources. 3003 */ 3004 static void iavf_disable_vf(struct iavf_adapter *adapter) 3005 { 3006 struct iavf_mac_filter *f, *ftmp; 3007 struct iavf_vlan_filter *fv, *fvtmp; 3008 struct iavf_cloud_filter *cf, *cftmp; 3009 3010 netdev_assert_locked(adapter->netdev); 3011 3012 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 3013 3014 iavf_ptp_release(adapter); 3015 3016 /* We don't use netif_running() because it may be true prior to 3017 * ndo_open() returning, so we can't assume it means all our open 3018 * tasks have finished, since we're not holding the rtnl_lock here. 3019 */ 3020 if (adapter->state == __IAVF_RUNNING) { 3021 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3022 netif_carrier_off(adapter->netdev); 3023 netif_tx_disable(adapter->netdev); 3024 adapter->link_up = false; 3025 iavf_napi_disable_all(adapter); 3026 iavf_irq_disable(adapter); 3027 iavf_free_traffic_irqs(adapter); 3028 iavf_free_all_tx_resources(adapter); 3029 iavf_free_all_rx_resources(adapter); 3030 } 3031 3032 spin_lock_bh(&adapter->mac_vlan_list_lock); 3033 3034 /* Delete all of the filters */ 3035 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3036 list_del(&f->list); 3037 kfree(f); 3038 } 3039 3040 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) { 3041 list_del(&fv->list); 3042 kfree(fv); 3043 } 3044 adapter->num_vlan_filters = 0; 3045 3046 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3047 3048 spin_lock_bh(&adapter->cloud_filter_list_lock); 3049 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 3050 list_del(&cf->list); 3051 kfree(cf); 3052 adapter->num_cloud_filters--; 3053 } 3054 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3055 3056 iavf_free_misc_irq(adapter); 3057 iavf_free_interrupt_scheme(adapter); 3058 memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE); 3059 iavf_shutdown_adminq(&adapter->hw); 3060 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 3061 iavf_change_state(adapter, __IAVF_DOWN); 3062 wake_up(&adapter->down_waitqueue); 3063 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); 3064 } 3065 3066 /** 3067 * iavf_reconfig_qs_bw - Call-back task to handle hardware reset 3068 * @adapter: board private structure 3069 * 3070 * After a reset, the shaper parameters of queues need to be replayed again. 3071 * Since the net_shaper object inside TX rings persists across reset, 3072 * set the update flag for all queues so that the virtchnl message is triggered 3073 * for all queues. 3074 **/ 3075 static void iavf_reconfig_qs_bw(struct iavf_adapter *adapter) 3076 { 3077 int i, num = 0; 3078 3079 for (i = 0; i < adapter->num_active_queues; i++) 3080 if (adapter->tx_rings[i].q_shaper.bw_min || 3081 adapter->tx_rings[i].q_shaper.bw_max) { 3082 adapter->tx_rings[i].q_shaper_update = true; 3083 num++; 3084 } 3085 3086 if (num) 3087 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 3088 } 3089 3090 /** 3091 * iavf_reset_step - Perform the VF reset sequence 3092 * @adapter: board private structure 3093 * 3094 * Requests a reset from PF, polls for completion, and reconfigures 3095 * the driver. Caller must hold the netdev instance lock. 3096 * 3097 * This can sleep for several seconds while polling HW registers. 3098 */ 3099 void iavf_reset_step(struct iavf_adapter *adapter) 3100 { 3101 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3102 struct net_device *netdev = adapter->netdev; 3103 struct iavf_hw *hw = &adapter->hw; 3104 struct iavf_mac_filter *f, *ftmp; 3105 struct iavf_cloud_filter *cf; 3106 enum iavf_status status; 3107 u32 reg_val; 3108 int i = 0, err; 3109 bool running; 3110 3111 netdev_assert_locked(netdev); 3112 3113 iavf_misc_irq_disable(adapter); 3114 if (adapter->flags & IAVF_FLAG_RESET_NEEDED) { 3115 adapter->flags &= ~IAVF_FLAG_RESET_NEEDED; 3116 /* Restart the AQ here. If we have been reset but didn't 3117 * detect it, or if the PF had to reinit, our AQ will be hosed. 3118 */ 3119 iavf_shutdown_adminq(hw); 3120 iavf_init_adminq(hw); 3121 iavf_request_reset(adapter); 3122 } 3123 adapter->flags |= IAVF_FLAG_RESET_PENDING; 3124 3125 /* poll until we see the reset actually happen */ 3126 for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) { 3127 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & 3128 IAVF_VF_ARQLEN1_ARQENABLE_MASK; 3129 if (!reg_val) 3130 break; 3131 usleep_range(5000, 10000); 3132 } 3133 if (i == IAVF_RESET_WAIT_DETECTED_COUNT) { 3134 dev_info(&adapter->pdev->dev, "Never saw reset\n"); 3135 goto continue_reset; /* act like the reset happened */ 3136 } 3137 3138 /* wait until the reset is complete and the PF is responding to us */ 3139 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 3140 /* sleep first to make sure a minimum wait time is met */ 3141 msleep(IAVF_RESET_WAIT_MS); 3142 3143 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 3144 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 3145 if (reg_val == VIRTCHNL_VFR_VFACTIVE) 3146 break; 3147 } 3148 3149 pci_set_master(adapter->pdev); 3150 pci_restore_msi_state(adapter->pdev); 3151 3152 if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) { 3153 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", 3154 reg_val); 3155 iavf_disable_vf(adapter); 3156 return; /* Do not attempt to reinit. It's dead, Jim. */ 3157 } 3158 3159 continue_reset: 3160 /* If we are still early in the state machine, just restart. */ 3161 if (adapter->state <= __IAVF_INIT_FAILED) { 3162 iavf_shutdown_adminq(hw); 3163 iavf_change_state(adapter, __IAVF_STARTUP); 3164 iavf_startup(adapter); 3165 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 3166 msecs_to_jiffies(30)); 3167 return; 3168 } 3169 3170 /* We don't use netif_running() because it may be true prior to 3171 * ndo_open() returning, so we can't assume it means all our open 3172 * tasks have finished, since we're not holding the rtnl_lock here. 3173 */ 3174 running = adapter->state == __IAVF_RUNNING; 3175 3176 if (running) { 3177 netif_carrier_off(netdev); 3178 netif_tx_stop_all_queues(netdev); 3179 adapter->link_up = false; 3180 iavf_napi_disable_all(adapter); 3181 } 3182 iavf_irq_disable(adapter); 3183 3184 iavf_change_state(adapter, __IAVF_RESETTING); 3185 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 3186 3187 iavf_ptp_release(adapter); 3188 3189 /* free the Tx/Rx rings and descriptors, might be better to just 3190 * re-use them sometime in the future 3191 */ 3192 iavf_free_all_rx_resources(adapter); 3193 iavf_free_all_tx_resources(adapter); 3194 3195 adapter->flags |= IAVF_FLAG_QUEUES_DISABLED; 3196 /* kill and reinit the admin queue */ 3197 iavf_shutdown_adminq(hw); 3198 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 3199 status = iavf_init_adminq(hw); 3200 if (status) { 3201 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", 3202 status); 3203 goto reset_err; 3204 } 3205 adapter->aq_required = 0; 3206 3207 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3208 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3209 err = iavf_reinit_interrupt_scheme(adapter, running); 3210 if (err) 3211 goto reset_err; 3212 } 3213 3214 if (RSS_AQ(adapter)) { 3215 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 3216 } else { 3217 err = iavf_init_rss(adapter); 3218 if (err) 3219 goto reset_err; 3220 } 3221 3222 adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG; 3223 adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS; 3224 3225 /* Certain capabilities require an extended negotiation process using 3226 * extra messages that must be processed after getting the VF 3227 * configuration. The related checks such as VLAN_V2_ALLOWED() are not 3228 * reliable here, since the configuration has not yet been negotiated. 3229 * 3230 * Always set these flags, since them related VIRTCHNL messages won't 3231 * be sent until after VIRTCHNL_OP_GET_VF_RESOURCES. 3232 */ 3233 adapter->aq_required |= IAVF_FLAG_AQ_EXTENDED_CAPS; 3234 3235 spin_lock_bh(&adapter->mac_vlan_list_lock); 3236 3237 /* Delete filter for the current MAC address, it could have 3238 * been changed by the PF via administratively set MAC. 3239 * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES. 3240 */ 3241 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3242 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) { 3243 list_del(&f->list); 3244 kfree(f); 3245 } 3246 } 3247 /* re-add all MAC filters */ 3248 list_for_each_entry(f, &adapter->mac_filter_list, list) { 3249 f->add = true; 3250 } 3251 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3252 3253 /* check if TCs are running and re-add all cloud filters */ 3254 spin_lock_bh(&adapter->cloud_filter_list_lock); 3255 if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 3256 adapter->num_tc) { 3257 list_for_each_entry(cf, &adapter->cloud_filter_list, list) { 3258 cf->add = true; 3259 } 3260 } 3261 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3262 3263 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 3264 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 3265 iavf_misc_irq_enable(adapter); 3266 3267 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 2); 3268 3269 /* We were running when the reset started, so we need to restore some 3270 * state here. 3271 */ 3272 if (running) { 3273 /* allocate transmit descriptors */ 3274 err = iavf_setup_all_tx_resources(adapter); 3275 if (err) 3276 goto reset_err; 3277 3278 /* allocate receive descriptors */ 3279 err = iavf_setup_all_rx_resources(adapter); 3280 if (err) 3281 goto reset_err; 3282 3283 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3284 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3285 err = iavf_request_traffic_irqs(adapter, netdev->name); 3286 if (err) 3287 goto reset_err; 3288 3289 adapter->flags &= ~IAVF_FLAG_REINIT_MSIX_NEEDED; 3290 } 3291 3292 iavf_configure(adapter); 3293 3294 /* iavf_up_complete() will switch device back 3295 * to __IAVF_RUNNING 3296 */ 3297 iavf_up_complete(adapter); 3298 3299 iavf_irq_enable(adapter, true); 3300 3301 iavf_reconfig_qs_bw(adapter); 3302 } else { 3303 iavf_change_state(adapter, __IAVF_DOWN); 3304 wake_up(&adapter->down_waitqueue); 3305 } 3306 3307 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 3308 3309 return; 3310 reset_err: 3311 if (running) { 3312 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3313 iavf_free_traffic_irqs(adapter); 3314 } 3315 iavf_disable_vf(adapter); 3316 3317 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); 3318 } 3319 3320 static void iavf_reset_task(struct work_struct *work) 3321 { 3322 struct iavf_adapter *adapter = container_of(work, 3323 struct iavf_adapter, 3324 reset_task); 3325 struct net_device *netdev = adapter->netdev; 3326 3327 netdev_lock(netdev); 3328 iavf_reset_step(adapter); 3329 netdev_unlock(netdev); 3330 } 3331 3332 /** 3333 * iavf_adminq_task - worker thread to clean the admin queue 3334 * @work: pointer to work_struct containing our data 3335 **/ 3336 static void iavf_adminq_task(struct work_struct *work) 3337 { 3338 struct iavf_adapter *adapter = 3339 container_of(work, struct iavf_adapter, adminq_task); 3340 struct net_device *netdev = adapter->netdev; 3341 struct iavf_hw *hw = &adapter->hw; 3342 struct iavf_arq_event_info event; 3343 enum virtchnl_ops v_op; 3344 enum iavf_status ret, v_ret; 3345 u32 val, oldval; 3346 u16 pending; 3347 3348 netdev_lock(netdev); 3349 3350 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 3351 goto unlock; 3352 3353 event.buf_len = IAVF_MAX_AQ_BUF_SIZE; 3354 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3355 if (!event.msg_buf) 3356 goto unlock; 3357 3358 do { 3359 ret = iavf_clean_arq_element(hw, &event, &pending); 3360 v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high); 3361 v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low); 3362 3363 if (ret || !v_op) 3364 break; /* No event to process or error cleaning ARQ */ 3365 3366 iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf, 3367 event.msg_len); 3368 if (pending != 0) 3369 memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE); 3370 } while (pending); 3371 3372 if (iavf_is_reset_in_progress(adapter)) 3373 goto freedom; 3374 3375 /* check for error indications */ 3376 val = rd32(hw, IAVF_VF_ARQLEN1); 3377 if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */ 3378 goto freedom; 3379 oldval = val; 3380 if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) { 3381 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); 3382 val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK; 3383 } 3384 if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) { 3385 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); 3386 val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK; 3387 } 3388 if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) { 3389 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); 3390 val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK; 3391 } 3392 if (oldval != val) 3393 wr32(hw, IAVF_VF_ARQLEN1, val); 3394 3395 val = rd32(hw, IAVF_VF_ATQLEN1); 3396 oldval = val; 3397 if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) { 3398 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); 3399 val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK; 3400 } 3401 if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) { 3402 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); 3403 val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK; 3404 } 3405 if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) { 3406 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); 3407 val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK; 3408 } 3409 if (oldval != val) 3410 wr32(hw, IAVF_VF_ATQLEN1, val); 3411 3412 freedom: 3413 kfree(event.msg_buf); 3414 unlock: 3415 netdev_unlock(netdev); 3416 /* re-enable Admin queue interrupt cause */ 3417 iavf_misc_irq_enable(adapter); 3418 } 3419 3420 /** 3421 * iavf_free_all_tx_resources - Free Tx Resources for All Queues 3422 * @adapter: board private structure 3423 * 3424 * Free all transmit software resources 3425 **/ 3426 void iavf_free_all_tx_resources(struct iavf_adapter *adapter) 3427 { 3428 int i; 3429 3430 if (!adapter->tx_rings) 3431 return; 3432 3433 for (i = 0; i < adapter->num_active_queues; i++) 3434 if (adapter->tx_rings[i].desc) 3435 iavf_free_tx_resources(&adapter->tx_rings[i]); 3436 } 3437 3438 /** 3439 * iavf_setup_all_tx_resources - allocate all queues Tx resources 3440 * @adapter: board private structure 3441 * 3442 * If this function returns with an error, then it's possible one or 3443 * more of the rings is populated (while the rest are not). It is the 3444 * callers duty to clean those orphaned rings. 3445 * 3446 * Return 0 on success, negative on failure 3447 **/ 3448 static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter) 3449 { 3450 int i, err = 0; 3451 3452 for (i = 0; i < adapter->num_active_queues; i++) { 3453 adapter->tx_rings[i].count = adapter->tx_desc_count; 3454 err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]); 3455 if (!err) 3456 continue; 3457 dev_err(&adapter->pdev->dev, 3458 "Allocation for Tx Queue %u failed\n", i); 3459 break; 3460 } 3461 3462 return err; 3463 } 3464 3465 /** 3466 * iavf_setup_all_rx_resources - allocate all queues Rx resources 3467 * @adapter: board private structure 3468 * 3469 * If this function returns with an error, then it's possible one or 3470 * more of the rings is populated (while the rest are not). It is the 3471 * callers duty to clean those orphaned rings. 3472 * 3473 * Return 0 on success, negative on failure 3474 **/ 3475 static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter) 3476 { 3477 int i, err = 0; 3478 3479 for (i = 0; i < adapter->num_active_queues; i++) { 3480 adapter->rx_rings[i].count = adapter->rx_desc_count; 3481 err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]); 3482 if (!err) 3483 continue; 3484 dev_err(&adapter->pdev->dev, 3485 "Allocation for Rx Queue %u failed\n", i); 3486 break; 3487 } 3488 return err; 3489 } 3490 3491 /** 3492 * iavf_free_all_rx_resources - Free Rx Resources for All Queues 3493 * @adapter: board private structure 3494 * 3495 * Free all receive software resources 3496 **/ 3497 void iavf_free_all_rx_resources(struct iavf_adapter *adapter) 3498 { 3499 int i; 3500 3501 if (!adapter->rx_rings) 3502 return; 3503 3504 for (i = 0; i < adapter->num_active_queues; i++) 3505 if (adapter->rx_rings[i].desc) 3506 iavf_free_rx_resources(&adapter->rx_rings[i]); 3507 } 3508 3509 /** 3510 * iavf_validate_tx_bandwidth - validate the max Tx bandwidth 3511 * @adapter: board private structure 3512 * @max_tx_rate: max Tx bw for a tc 3513 **/ 3514 static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter, 3515 u64 max_tx_rate) 3516 { 3517 int speed = 0, ret = 0; 3518 3519 if (ADV_LINK_SUPPORT(adapter)) { 3520 if (adapter->link_speed_mbps < U32_MAX) { 3521 speed = adapter->link_speed_mbps; 3522 goto validate_bw; 3523 } else { 3524 dev_err(&adapter->pdev->dev, "Unknown link speed\n"); 3525 return -EINVAL; 3526 } 3527 } 3528 3529 switch (adapter->link_speed) { 3530 case VIRTCHNL_LINK_SPEED_40GB: 3531 speed = SPEED_40000; 3532 break; 3533 case VIRTCHNL_LINK_SPEED_25GB: 3534 speed = SPEED_25000; 3535 break; 3536 case VIRTCHNL_LINK_SPEED_20GB: 3537 speed = SPEED_20000; 3538 break; 3539 case VIRTCHNL_LINK_SPEED_10GB: 3540 speed = SPEED_10000; 3541 break; 3542 case VIRTCHNL_LINK_SPEED_5GB: 3543 speed = SPEED_5000; 3544 break; 3545 case VIRTCHNL_LINK_SPEED_2_5GB: 3546 speed = SPEED_2500; 3547 break; 3548 case VIRTCHNL_LINK_SPEED_1GB: 3549 speed = SPEED_1000; 3550 break; 3551 case VIRTCHNL_LINK_SPEED_100MB: 3552 speed = SPEED_100; 3553 break; 3554 default: 3555 break; 3556 } 3557 3558 validate_bw: 3559 if (max_tx_rate > speed) { 3560 dev_err(&adapter->pdev->dev, 3561 "Invalid tx rate specified\n"); 3562 ret = -EINVAL; 3563 } 3564 3565 return ret; 3566 } 3567 3568 /** 3569 * iavf_validate_ch_config - validate queue mapping info 3570 * @adapter: board private structure 3571 * @mqprio_qopt: queue parameters 3572 * 3573 * This function validates if the config provided by the user to 3574 * configure queue channels is valid or not. Returns 0 on a valid 3575 * config. 3576 **/ 3577 static int iavf_validate_ch_config(struct iavf_adapter *adapter, 3578 struct tc_mqprio_qopt_offload *mqprio_qopt) 3579 { 3580 u64 total_max_rate = 0; 3581 u32 tx_rate_rem = 0; 3582 int i, num_qps = 0; 3583 u64 tx_rate = 0; 3584 int ret = 0; 3585 3586 if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS || 3587 mqprio_qopt->qopt.num_tc < 1) 3588 return -EINVAL; 3589 3590 for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) { 3591 if (!mqprio_qopt->qopt.count[i] || 3592 mqprio_qopt->qopt.offset[i] != num_qps) 3593 return -EINVAL; 3594 if (mqprio_qopt->min_rate[i]) { 3595 dev_err(&adapter->pdev->dev, 3596 "Invalid min tx rate (greater than 0) specified for TC%d\n", 3597 i); 3598 return -EINVAL; 3599 } 3600 3601 /* convert to Mbps */ 3602 tx_rate = div_u64(mqprio_qopt->max_rate[i], 3603 IAVF_MBPS_DIVISOR); 3604 3605 if (mqprio_qopt->max_rate[i] && 3606 tx_rate < IAVF_MBPS_QUANTA) { 3607 dev_err(&adapter->pdev->dev, 3608 "Invalid max tx rate for TC%d, minimum %dMbps\n", 3609 i, IAVF_MBPS_QUANTA); 3610 return -EINVAL; 3611 } 3612 3613 (void)div_u64_rem(tx_rate, IAVF_MBPS_QUANTA, &tx_rate_rem); 3614 3615 if (tx_rate_rem != 0) { 3616 dev_err(&adapter->pdev->dev, 3617 "Invalid max tx rate for TC%d, not divisible by %d\n", 3618 i, IAVF_MBPS_QUANTA); 3619 return -EINVAL; 3620 } 3621 3622 total_max_rate += tx_rate; 3623 num_qps += mqprio_qopt->qopt.count[i]; 3624 } 3625 if (num_qps > adapter->num_active_queues) { 3626 dev_err(&adapter->pdev->dev, 3627 "Cannot support requested number of queues\n"); 3628 return -EINVAL; 3629 } 3630 3631 ret = iavf_validate_tx_bandwidth(adapter, total_max_rate); 3632 return ret; 3633 } 3634 3635 /** 3636 * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes 3637 * @adapter: board private structure 3638 **/ 3639 static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter) 3640 { 3641 struct iavf_cloud_filter *cf, *cftmp; 3642 3643 spin_lock_bh(&adapter->cloud_filter_list_lock); 3644 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 3645 list) { 3646 list_del(&cf->list); 3647 kfree(cf); 3648 adapter->num_cloud_filters--; 3649 } 3650 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3651 } 3652 3653 /** 3654 * iavf_is_tc_config_same - Compare the mqprio TC config with the 3655 * TC config already configured on this adapter. 3656 * @adapter: board private structure 3657 * @mqprio_qopt: TC config received from kernel. 3658 * 3659 * This function compares the TC config received from the kernel 3660 * with the config already configured on the adapter. 3661 * 3662 * Return: True if configuration is same, false otherwise. 3663 **/ 3664 static bool iavf_is_tc_config_same(struct iavf_adapter *adapter, 3665 struct tc_mqprio_qopt *mqprio_qopt) 3666 { 3667 struct virtchnl_channel_info *ch = &adapter->ch_config.ch_info[0]; 3668 int i; 3669 3670 if (adapter->num_tc != mqprio_qopt->num_tc) 3671 return false; 3672 3673 for (i = 0; i < adapter->num_tc; i++) { 3674 if (ch[i].count != mqprio_qopt->count[i] || 3675 ch[i].offset != mqprio_qopt->offset[i]) 3676 return false; 3677 } 3678 return true; 3679 } 3680 3681 /** 3682 * __iavf_setup_tc - configure multiple traffic classes 3683 * @netdev: network interface device structure 3684 * @type_data: tc offload data 3685 * 3686 * This function processes the config information provided by the 3687 * user to configure traffic classes/queue channels and packages the 3688 * information to request the PF to setup traffic classes. 3689 * 3690 * Returns 0 on success. 3691 **/ 3692 static int __iavf_setup_tc(struct net_device *netdev, void *type_data) 3693 { 3694 struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; 3695 struct iavf_adapter *adapter = netdev_priv(netdev); 3696 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3697 u8 num_tc = 0, total_qps = 0; 3698 int ret = 0, netdev_tc = 0; 3699 u64 max_tx_rate; 3700 u16 mode; 3701 int i; 3702 3703 num_tc = mqprio_qopt->qopt.num_tc; 3704 mode = mqprio_qopt->mode; 3705 3706 /* delete queue_channel */ 3707 if (!mqprio_qopt->qopt.hw) { 3708 if (adapter->ch_config.state == __IAVF_TC_RUNNING) { 3709 /* reset the tc configuration */ 3710 netdev_reset_tc(netdev); 3711 adapter->num_tc = 0; 3712 netif_tx_stop_all_queues(netdev); 3713 netif_tx_disable(netdev); 3714 iavf_del_all_cloud_filters(adapter); 3715 adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS; 3716 total_qps = adapter->orig_num_active_queues; 3717 goto exit; 3718 } else { 3719 return -EINVAL; 3720 } 3721 } 3722 3723 /* add queue channel */ 3724 if (mode == TC_MQPRIO_MODE_CHANNEL) { 3725 if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) { 3726 dev_err(&adapter->pdev->dev, "ADq not supported\n"); 3727 return -EOPNOTSUPP; 3728 } 3729 if (adapter->ch_config.state != __IAVF_TC_INVALID) { 3730 dev_err(&adapter->pdev->dev, "TC configuration already exists\n"); 3731 return -EINVAL; 3732 } 3733 3734 ret = iavf_validate_ch_config(adapter, mqprio_qopt); 3735 if (ret) 3736 return ret; 3737 /* Return if same TC config is requested */ 3738 if (iavf_is_tc_config_same(adapter, &mqprio_qopt->qopt)) 3739 return 0; 3740 adapter->num_tc = num_tc; 3741 3742 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3743 if (i < num_tc) { 3744 adapter->ch_config.ch_info[i].count = 3745 mqprio_qopt->qopt.count[i]; 3746 adapter->ch_config.ch_info[i].offset = 3747 mqprio_qopt->qopt.offset[i]; 3748 total_qps += mqprio_qopt->qopt.count[i]; 3749 max_tx_rate = mqprio_qopt->max_rate[i]; 3750 /* convert to Mbps */ 3751 max_tx_rate = div_u64(max_tx_rate, 3752 IAVF_MBPS_DIVISOR); 3753 adapter->ch_config.ch_info[i].max_tx_rate = 3754 max_tx_rate; 3755 } else { 3756 adapter->ch_config.ch_info[i].count = 1; 3757 adapter->ch_config.ch_info[i].offset = 0; 3758 } 3759 } 3760 3761 /* Take snapshot of original config such as "num_active_queues" 3762 * It is used later when delete ADQ flow is exercised, so that 3763 * once delete ADQ flow completes, VF shall go back to its 3764 * original queue configuration 3765 */ 3766 3767 adapter->orig_num_active_queues = adapter->num_active_queues; 3768 3769 /* Store queue info based on TC so that VF gets configured 3770 * with correct number of queues when VF completes ADQ config 3771 * flow 3772 */ 3773 adapter->ch_config.total_qps = total_qps; 3774 3775 netif_tx_stop_all_queues(netdev); 3776 netif_tx_disable(netdev); 3777 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS; 3778 netdev_reset_tc(netdev); 3779 /* Report the tc mapping up the stack */ 3780 netdev_set_num_tc(adapter->netdev, num_tc); 3781 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3782 u16 qcount = mqprio_qopt->qopt.count[i]; 3783 u16 qoffset = mqprio_qopt->qopt.offset[i]; 3784 3785 if (i < num_tc) 3786 netdev_set_tc_queue(netdev, netdev_tc++, qcount, 3787 qoffset); 3788 } 3789 } 3790 exit: 3791 if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 3792 return 0; 3793 3794 netif_set_real_num_rx_queues(netdev, total_qps); 3795 netif_set_real_num_tx_queues(netdev, total_qps); 3796 3797 return ret; 3798 } 3799 3800 /** 3801 * iavf_parse_cls_flower - Parse tc flower filters provided by kernel 3802 * @adapter: board private structure 3803 * @f: pointer to struct flow_cls_offload 3804 * @filter: pointer to cloud filter structure 3805 */ 3806 static int iavf_parse_cls_flower(struct iavf_adapter *adapter, 3807 struct flow_cls_offload *f, 3808 struct iavf_cloud_filter *filter) 3809 { 3810 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 3811 struct flow_dissector *dissector = rule->match.dissector; 3812 u16 n_proto_mask = 0; 3813 u16 n_proto_key = 0; 3814 u8 field_flags = 0; 3815 u16 addr_type = 0; 3816 u16 n_proto = 0; 3817 int i = 0; 3818 struct virtchnl_filter *vf = &filter->f; 3819 3820 if (dissector->used_keys & 3821 ~(BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) | 3822 BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) | 3823 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 3824 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) | 3825 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 3826 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 3827 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) | 3828 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID))) { 3829 dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%llx\n", 3830 dissector->used_keys); 3831 return -EOPNOTSUPP; 3832 } 3833 3834 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 3835 struct flow_match_enc_keyid match; 3836 3837 flow_rule_match_enc_keyid(rule, &match); 3838 if (match.mask->keyid != 0) 3839 field_flags |= IAVF_CLOUD_FIELD_TEN_ID; 3840 } 3841 3842 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 3843 struct flow_match_basic match; 3844 3845 flow_rule_match_basic(rule, &match); 3846 n_proto_key = ntohs(match.key->n_proto); 3847 n_proto_mask = ntohs(match.mask->n_proto); 3848 3849 if (n_proto_key == ETH_P_ALL) { 3850 n_proto_key = 0; 3851 n_proto_mask = 0; 3852 } 3853 n_proto = n_proto_key & n_proto_mask; 3854 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) 3855 return -EINVAL; 3856 if (n_proto == ETH_P_IPV6) { 3857 /* specify flow type as TCP IPv6 */ 3858 vf->flow_type = VIRTCHNL_TCP_V6_FLOW; 3859 } 3860 3861 if (match.key->ip_proto != IPPROTO_TCP) { 3862 dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n"); 3863 return -EINVAL; 3864 } 3865 } 3866 3867 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 3868 struct flow_match_eth_addrs match; 3869 3870 flow_rule_match_eth_addrs(rule, &match); 3871 3872 /* use is_broadcast and is_zero to check for all 0xf or 0 */ 3873 if (!is_zero_ether_addr(match.mask->dst)) { 3874 if (is_broadcast_ether_addr(match.mask->dst)) { 3875 field_flags |= IAVF_CLOUD_FIELD_OMAC; 3876 } else { 3877 dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n", 3878 match.mask->dst); 3879 return -EINVAL; 3880 } 3881 } 3882 3883 if (!is_zero_ether_addr(match.mask->src)) { 3884 if (is_broadcast_ether_addr(match.mask->src)) { 3885 field_flags |= IAVF_CLOUD_FIELD_IMAC; 3886 } else { 3887 dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n", 3888 match.mask->src); 3889 return -EINVAL; 3890 } 3891 } 3892 3893 if (!is_zero_ether_addr(match.key->dst)) 3894 if (is_valid_ether_addr(match.key->dst) || 3895 is_multicast_ether_addr(match.key->dst)) { 3896 /* set the mask if a valid dst_mac address */ 3897 for (i = 0; i < ETH_ALEN; i++) 3898 vf->mask.tcp_spec.dst_mac[i] |= 0xff; 3899 ether_addr_copy(vf->data.tcp_spec.dst_mac, 3900 match.key->dst); 3901 } 3902 3903 if (!is_zero_ether_addr(match.key->src)) 3904 if (is_valid_ether_addr(match.key->src) || 3905 is_multicast_ether_addr(match.key->src)) { 3906 /* set the mask if a valid dst_mac address */ 3907 for (i = 0; i < ETH_ALEN; i++) 3908 vf->mask.tcp_spec.src_mac[i] |= 0xff; 3909 ether_addr_copy(vf->data.tcp_spec.src_mac, 3910 match.key->src); 3911 } 3912 } 3913 3914 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 3915 struct flow_match_vlan match; 3916 3917 flow_rule_match_vlan(rule, &match); 3918 if (match.mask->vlan_id) { 3919 if (match.mask->vlan_id == VLAN_VID_MASK) { 3920 field_flags |= IAVF_CLOUD_FIELD_IVLAN; 3921 } else { 3922 dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n", 3923 match.mask->vlan_id); 3924 return -EINVAL; 3925 } 3926 } 3927 vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff); 3928 vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id); 3929 } 3930 3931 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 3932 struct flow_match_control match; 3933 3934 flow_rule_match_control(rule, &match); 3935 addr_type = match.key->addr_type; 3936 3937 if (flow_rule_has_control_flags(match.mask->flags, 3938 f->common.extack)) 3939 return -EOPNOTSUPP; 3940 } 3941 3942 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 3943 struct flow_match_ipv4_addrs match; 3944 3945 flow_rule_match_ipv4_addrs(rule, &match); 3946 if (match.mask->dst) { 3947 if (match.mask->dst == cpu_to_be32(0xffffffff)) { 3948 field_flags |= IAVF_CLOUD_FIELD_IIP; 3949 } else { 3950 dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n", 3951 be32_to_cpu(match.mask->dst)); 3952 return -EINVAL; 3953 } 3954 } 3955 3956 if (match.mask->src) { 3957 if (match.mask->src == cpu_to_be32(0xffffffff)) { 3958 field_flags |= IAVF_CLOUD_FIELD_IIP; 3959 } else { 3960 dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n", 3961 be32_to_cpu(match.mask->src)); 3962 return -EINVAL; 3963 } 3964 } 3965 3966 if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) { 3967 dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n"); 3968 return -EINVAL; 3969 } 3970 if (match.key->dst) { 3971 vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff); 3972 vf->data.tcp_spec.dst_ip[0] = match.key->dst; 3973 } 3974 if (match.key->src) { 3975 vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff); 3976 vf->data.tcp_spec.src_ip[0] = match.key->src; 3977 } 3978 } 3979 3980 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 3981 struct flow_match_ipv6_addrs match; 3982 3983 flow_rule_match_ipv6_addrs(rule, &match); 3984 3985 /* validate mask, make sure it is not IPV6_ADDR_ANY */ 3986 if (ipv6_addr_any(&match.mask->dst)) { 3987 dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n", 3988 IPV6_ADDR_ANY); 3989 return -EINVAL; 3990 } 3991 3992 /* src and dest IPv6 address should not be LOOPBACK 3993 * (0:0:0:0:0:0:0:1) which can be represented as ::1 3994 */ 3995 if (ipv6_addr_loopback(&match.key->dst) || 3996 ipv6_addr_loopback(&match.key->src)) { 3997 dev_err(&adapter->pdev->dev, 3998 "ipv6 addr should not be loopback\n"); 3999 return -EINVAL; 4000 } 4001 if (!ipv6_addr_any(&match.mask->dst) || 4002 !ipv6_addr_any(&match.mask->src)) 4003 field_flags |= IAVF_CLOUD_FIELD_IIP; 4004 4005 for (i = 0; i < 4; i++) 4006 vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff); 4007 memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32, 4008 sizeof(vf->data.tcp_spec.dst_ip)); 4009 for (i = 0; i < 4; i++) 4010 vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff); 4011 memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32, 4012 sizeof(vf->data.tcp_spec.src_ip)); 4013 } 4014 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 4015 struct flow_match_ports match; 4016 4017 flow_rule_match_ports(rule, &match); 4018 if (match.mask->src) { 4019 if (match.mask->src == cpu_to_be16(0xffff)) { 4020 field_flags |= IAVF_CLOUD_FIELD_IIP; 4021 } else { 4022 dev_err(&adapter->pdev->dev, "Bad src port mask %u\n", 4023 be16_to_cpu(match.mask->src)); 4024 return -EINVAL; 4025 } 4026 } 4027 4028 if (match.mask->dst) { 4029 if (match.mask->dst == cpu_to_be16(0xffff)) { 4030 field_flags |= IAVF_CLOUD_FIELD_IIP; 4031 } else { 4032 dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n", 4033 be16_to_cpu(match.mask->dst)); 4034 return -EINVAL; 4035 } 4036 } 4037 if (match.key->dst) { 4038 vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff); 4039 vf->data.tcp_spec.dst_port = match.key->dst; 4040 } 4041 4042 if (match.key->src) { 4043 vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff); 4044 vf->data.tcp_spec.src_port = match.key->src; 4045 } 4046 } 4047 vf->field_flags = field_flags; 4048 4049 return 0; 4050 } 4051 4052 /** 4053 * iavf_handle_tclass - Forward to a traffic class on the device 4054 * @adapter: board private structure 4055 * @tc: traffic class index on the device 4056 * @filter: pointer to cloud filter structure 4057 */ 4058 static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc, 4059 struct iavf_cloud_filter *filter) 4060 { 4061 if (tc == 0) 4062 return 0; 4063 if (tc < adapter->num_tc) { 4064 if (!filter->f.data.tcp_spec.dst_port) { 4065 dev_err(&adapter->pdev->dev, 4066 "Specify destination port to redirect to traffic class other than TC0\n"); 4067 return -EINVAL; 4068 } 4069 } 4070 /* redirect to a traffic class on the same device */ 4071 filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT; 4072 filter->f.action_meta = tc; 4073 return 0; 4074 } 4075 4076 /** 4077 * iavf_find_cf - Find the cloud filter in the list 4078 * @adapter: Board private structure 4079 * @cookie: filter specific cookie 4080 * 4081 * Returns ptr to the filter object or NULL. Must be called while holding the 4082 * cloud_filter_list_lock. 4083 */ 4084 static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter, 4085 unsigned long *cookie) 4086 { 4087 struct iavf_cloud_filter *filter = NULL; 4088 4089 if (!cookie) 4090 return NULL; 4091 4092 list_for_each_entry(filter, &adapter->cloud_filter_list, list) { 4093 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie))) 4094 return filter; 4095 } 4096 return NULL; 4097 } 4098 4099 /** 4100 * iavf_configure_clsflower - Add tc flower filters 4101 * @adapter: board private structure 4102 * @cls_flower: Pointer to struct flow_cls_offload 4103 */ 4104 static int iavf_configure_clsflower(struct iavf_adapter *adapter, 4105 struct flow_cls_offload *cls_flower) 4106 { 4107 int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid); 4108 struct iavf_cloud_filter *filter; 4109 int err; 4110 4111 if (tc < 0) { 4112 dev_err(&adapter->pdev->dev, "Invalid traffic class\n"); 4113 return -EINVAL; 4114 } 4115 4116 filter = kzalloc_obj(*filter); 4117 if (!filter) 4118 return -ENOMEM; 4119 filter->cookie = cls_flower->cookie; 4120 4121 netdev_lock(adapter->netdev); 4122 4123 /* bail out here if filter already exists */ 4124 spin_lock_bh(&adapter->cloud_filter_list_lock); 4125 if (iavf_find_cf(adapter, &cls_flower->cookie)) { 4126 dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n"); 4127 err = -EEXIST; 4128 goto spin_unlock; 4129 } 4130 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4131 4132 /* set the mask to all zeroes to begin with */ 4133 memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec)); 4134 /* start out with flow type and eth type IPv4 to begin with */ 4135 filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW; 4136 err = iavf_parse_cls_flower(adapter, cls_flower, filter); 4137 if (err) 4138 goto err; 4139 4140 err = iavf_handle_tclass(adapter, tc, filter); 4141 if (err) 4142 goto err; 4143 4144 /* add filter to the list */ 4145 spin_lock_bh(&adapter->cloud_filter_list_lock); 4146 list_add_tail(&filter->list, &adapter->cloud_filter_list); 4147 adapter->num_cloud_filters++; 4148 filter->add = true; 4149 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 4150 spin_unlock: 4151 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4152 err: 4153 if (err) 4154 kfree(filter); 4155 4156 netdev_unlock(adapter->netdev); 4157 return err; 4158 } 4159 4160 /** 4161 * iavf_delete_clsflower - Remove tc flower filters 4162 * @adapter: board private structure 4163 * @cls_flower: Pointer to struct flow_cls_offload 4164 */ 4165 static int iavf_delete_clsflower(struct iavf_adapter *adapter, 4166 struct flow_cls_offload *cls_flower) 4167 { 4168 struct iavf_cloud_filter *filter = NULL; 4169 int err = 0; 4170 4171 spin_lock_bh(&adapter->cloud_filter_list_lock); 4172 filter = iavf_find_cf(adapter, &cls_flower->cookie); 4173 if (filter) { 4174 filter->del = true; 4175 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 4176 } else { 4177 err = -EINVAL; 4178 } 4179 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4180 4181 return err; 4182 } 4183 4184 /** 4185 * iavf_setup_tc_cls_flower - flower classifier offloads 4186 * @adapter: pointer to iavf adapter structure 4187 * @cls_flower: pointer to flow_cls_offload struct with flow info 4188 */ 4189 static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter, 4190 struct flow_cls_offload *cls_flower) 4191 { 4192 switch (cls_flower->command) { 4193 case FLOW_CLS_REPLACE: 4194 return iavf_configure_clsflower(adapter, cls_flower); 4195 case FLOW_CLS_DESTROY: 4196 return iavf_delete_clsflower(adapter, cls_flower); 4197 case FLOW_CLS_STATS: 4198 return -EOPNOTSUPP; 4199 default: 4200 return -EOPNOTSUPP; 4201 } 4202 } 4203 4204 /** 4205 * iavf_add_cls_u32 - Add U32 classifier offloads 4206 * @adapter: pointer to iavf adapter structure 4207 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4208 * 4209 * Return: 0 on success or negative errno on failure. 4210 */ 4211 static int iavf_add_cls_u32(struct iavf_adapter *adapter, 4212 struct tc_cls_u32_offload *cls_u32) 4213 { 4214 struct netlink_ext_ack *extack = cls_u32->common.extack; 4215 struct virtchnl_fdir_rule *rule_cfg; 4216 struct virtchnl_filter_action *vact; 4217 struct virtchnl_proto_hdrs *hdrs; 4218 struct ethhdr *spec_h, *mask_h; 4219 const struct tc_action *act; 4220 struct iavf_fdir_fltr *fltr; 4221 struct tcf_exts *exts; 4222 unsigned int q_index; 4223 int i, status = 0; 4224 int off_base = 0; 4225 4226 if (cls_u32->knode.link_handle) { 4227 NL_SET_ERR_MSG_MOD(extack, "Linking not supported"); 4228 return -EOPNOTSUPP; 4229 } 4230 4231 fltr = kzalloc_obj(*fltr); 4232 if (!fltr) 4233 return -ENOMEM; 4234 4235 rule_cfg = &fltr->vc_add_msg.rule_cfg; 4236 hdrs = &rule_cfg->proto_hdrs; 4237 hdrs->count = 0; 4238 4239 /* The parser lib at the PF expects the packet starting with MAC hdr */ 4240 switch (ntohs(cls_u32->common.protocol)) { 4241 case ETH_P_802_3: 4242 break; 4243 case ETH_P_IP: 4244 spec_h = (struct ethhdr *)hdrs->raw.spec; 4245 mask_h = (struct ethhdr *)hdrs->raw.mask; 4246 spec_h->h_proto = htons(ETH_P_IP); 4247 mask_h->h_proto = htons(0xFFFF); 4248 off_base += ETH_HLEN; 4249 break; 4250 default: 4251 NL_SET_ERR_MSG_MOD(extack, "Only 802_3 and ip filter protocols are supported"); 4252 status = -EOPNOTSUPP; 4253 goto free_alloc; 4254 } 4255 4256 for (i = 0; i < cls_u32->knode.sel->nkeys; i++) { 4257 __be32 val, mask; 4258 int off; 4259 4260 off = off_base + cls_u32->knode.sel->keys[i].off; 4261 val = cls_u32->knode.sel->keys[i].val; 4262 mask = cls_u32->knode.sel->keys[i].mask; 4263 4264 if (off >= sizeof(hdrs->raw.spec)) { 4265 NL_SET_ERR_MSG_MOD(extack, "Input exceeds maximum allowed."); 4266 status = -EINVAL; 4267 goto free_alloc; 4268 } 4269 4270 memcpy(&hdrs->raw.spec[off], &val, sizeof(val)); 4271 memcpy(&hdrs->raw.mask[off], &mask, sizeof(mask)); 4272 hdrs->raw.pkt_len = off + sizeof(val); 4273 } 4274 4275 /* Only one action is allowed */ 4276 rule_cfg->action_set.count = 1; 4277 vact = &rule_cfg->action_set.actions[0]; 4278 exts = cls_u32->knode.exts; 4279 4280 tcf_exts_for_each_action(i, act, exts) { 4281 /* FDIR queue */ 4282 if (is_tcf_skbedit_rx_queue_mapping(act)) { 4283 q_index = tcf_skbedit_rx_queue_mapping(act); 4284 if (q_index >= adapter->num_active_queues) { 4285 status = -EINVAL; 4286 goto free_alloc; 4287 } 4288 4289 vact->type = VIRTCHNL_ACTION_QUEUE; 4290 vact->act_conf.queue.index = q_index; 4291 break; 4292 } 4293 4294 /* Drop */ 4295 if (is_tcf_gact_shot(act)) { 4296 vact->type = VIRTCHNL_ACTION_DROP; 4297 break; 4298 } 4299 4300 /* Unsupported action */ 4301 NL_SET_ERR_MSG_MOD(extack, "Unsupported action."); 4302 status = -EOPNOTSUPP; 4303 goto free_alloc; 4304 } 4305 4306 fltr->vc_add_msg.vsi_id = adapter->vsi.id; 4307 fltr->cls_u32_handle = cls_u32->knode.handle; 4308 return iavf_fdir_add_fltr(adapter, fltr); 4309 4310 free_alloc: 4311 kfree(fltr); 4312 return status; 4313 } 4314 4315 /** 4316 * iavf_del_cls_u32 - Delete U32 classifier 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_del_cls_u32(struct iavf_adapter *adapter, 4323 struct tc_cls_u32_offload *cls_u32) 4324 { 4325 return iavf_fdir_del_fltr(adapter, true, cls_u32->knode.handle); 4326 } 4327 4328 /** 4329 * iavf_setup_tc_cls_u32 - U32 filter offloads 4330 * @adapter: pointer to iavf adapter structure 4331 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4332 * 4333 * Return: 0 on success or negative errno on failure. 4334 */ 4335 static int iavf_setup_tc_cls_u32(struct iavf_adapter *adapter, 4336 struct tc_cls_u32_offload *cls_u32) 4337 { 4338 if (!TC_U32_SUPPORT(adapter) || !FDIR_FLTR_SUPPORT(adapter)) 4339 return -EOPNOTSUPP; 4340 4341 switch (cls_u32->command) { 4342 case TC_CLSU32_NEW_KNODE: 4343 case TC_CLSU32_REPLACE_KNODE: 4344 return iavf_add_cls_u32(adapter, cls_u32); 4345 case TC_CLSU32_DELETE_KNODE: 4346 return iavf_del_cls_u32(adapter, cls_u32); 4347 default: 4348 return -EOPNOTSUPP; 4349 } 4350 } 4351 4352 /** 4353 * iavf_setup_tc_block_cb - block callback for tc 4354 * @type: type of offload 4355 * @type_data: offload data 4356 * @cb_priv: 4357 * 4358 * This function is the block callback for traffic classes 4359 **/ 4360 static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 4361 void *cb_priv) 4362 { 4363 struct iavf_adapter *adapter = cb_priv; 4364 4365 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 4366 return -EOPNOTSUPP; 4367 4368 switch (type) { 4369 case TC_SETUP_CLSFLOWER: 4370 return iavf_setup_tc_cls_flower(cb_priv, type_data); 4371 case TC_SETUP_CLSU32: 4372 return iavf_setup_tc_cls_u32(cb_priv, type_data); 4373 default: 4374 return -EOPNOTSUPP; 4375 } 4376 } 4377 4378 static LIST_HEAD(iavf_block_cb_list); 4379 4380 /** 4381 * iavf_setup_tc - configure multiple traffic classes 4382 * @netdev: network interface device structure 4383 * @type: type of offload 4384 * @type_data: tc offload data 4385 * 4386 * This function is the callback to ndo_setup_tc in the 4387 * netdev_ops. 4388 * 4389 * Returns 0 on success 4390 **/ 4391 static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, 4392 void *type_data) 4393 { 4394 struct iavf_adapter *adapter = netdev_priv(netdev); 4395 4396 switch (type) { 4397 case TC_SETUP_QDISC_MQPRIO: 4398 return __iavf_setup_tc(netdev, type_data); 4399 case TC_SETUP_BLOCK: 4400 return flow_block_cb_setup_simple(type_data, 4401 &iavf_block_cb_list, 4402 iavf_setup_tc_block_cb, 4403 adapter, adapter, true); 4404 default: 4405 return -EOPNOTSUPP; 4406 } 4407 } 4408 4409 /** 4410 * iavf_restore_fdir_filters 4411 * @adapter: board private structure 4412 * 4413 * Restore existing FDIR filters when VF netdev comes back up. 4414 **/ 4415 static void iavf_restore_fdir_filters(struct iavf_adapter *adapter) 4416 { 4417 struct iavf_fdir_fltr *f; 4418 4419 spin_lock_bh(&adapter->fdir_fltr_lock); 4420 list_for_each_entry(f, &adapter->fdir_list_head, list) { 4421 if (f->state == IAVF_FDIR_FLTR_DIS_REQUEST) { 4422 /* Cancel a request, keep filter as active */ 4423 f->state = IAVF_FDIR_FLTR_ACTIVE; 4424 } else if (f->state == IAVF_FDIR_FLTR_DIS_PENDING || 4425 f->state == IAVF_FDIR_FLTR_INACTIVE) { 4426 /* Add filters which are inactive or have a pending 4427 * request to PF to be deleted 4428 */ 4429 f->state = IAVF_FDIR_FLTR_ADD_REQUEST; 4430 adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER; 4431 } 4432 } 4433 spin_unlock_bh(&adapter->fdir_fltr_lock); 4434 } 4435 4436 /** 4437 * iavf_open - Called when a network interface is made active 4438 * @netdev: network interface device structure 4439 * 4440 * Returns 0 on success, negative value on failure 4441 * 4442 * The open entry point is called when a network interface is made 4443 * active by the system (IFF_UP). At this point all resources needed 4444 * for transmit and receive operations are allocated, the interrupt 4445 * handler is registered with the OS, the watchdog is started, 4446 * and the stack is notified that the interface is ready. 4447 **/ 4448 static int iavf_open(struct net_device *netdev) 4449 { 4450 struct iavf_adapter *adapter = netdev_priv(netdev); 4451 int err; 4452 4453 netdev_assert_locked(netdev); 4454 4455 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) { 4456 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); 4457 return -EIO; 4458 } 4459 4460 if (adapter->state != __IAVF_DOWN) 4461 return -EBUSY; 4462 4463 if (adapter->state == __IAVF_RUNNING && 4464 !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) { 4465 dev_dbg(&adapter->pdev->dev, "VF is already open.\n"); 4466 return 0; 4467 } 4468 4469 /* allocate transmit descriptors */ 4470 err = iavf_setup_all_tx_resources(adapter); 4471 if (err) 4472 goto err_setup_tx; 4473 4474 /* allocate receive descriptors */ 4475 err = iavf_setup_all_rx_resources(adapter); 4476 if (err) 4477 goto err_setup_rx; 4478 4479 /* clear any pending interrupts, may auto mask */ 4480 err = iavf_request_traffic_irqs(adapter, netdev->name); 4481 if (err) 4482 goto err_req_irq; 4483 4484 spin_lock_bh(&adapter->mac_vlan_list_lock); 4485 iavf_add_filter(adapter, adapter->hw.mac.addr); 4486 spin_unlock_bh(&adapter->mac_vlan_list_lock); 4487 4488 /* Restore filters that were removed with IFF_DOWN */ 4489 iavf_restore_filters(adapter); 4490 iavf_restore_fdir_filters(adapter); 4491 4492 iavf_configure(adapter); 4493 4494 iavf_up_complete(adapter); 4495 4496 iavf_irq_enable(adapter, true); 4497 4498 return 0; 4499 4500 err_req_irq: 4501 iavf_down(adapter); 4502 iavf_free_traffic_irqs(adapter); 4503 err_setup_rx: 4504 iavf_free_all_rx_resources(adapter); 4505 err_setup_tx: 4506 iavf_free_all_tx_resources(adapter); 4507 4508 return err; 4509 } 4510 4511 /** 4512 * iavf_close - Disables a network interface 4513 * @netdev: network interface device structure 4514 * 4515 * Returns 0, this is not allowed to fail 4516 * 4517 * The close entry point is called when an interface is de-activated 4518 * by the OS. The hardware is still under the drivers control, but 4519 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) 4520 * are freed, along with all transmit and receive resources. 4521 **/ 4522 static int iavf_close(struct net_device *netdev) 4523 { 4524 struct iavf_adapter *adapter = netdev_priv(netdev); 4525 u64 aq_to_restore; 4526 int status; 4527 4528 netdev_assert_locked(netdev); 4529 4530 if (adapter->state <= __IAVF_DOWN_PENDING) 4531 return 0; 4532 4533 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 4534 /* We cannot send IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS before 4535 * IAVF_FLAG_AQ_DISABLE_QUEUES because in such case there is rtnl 4536 * deadlock with adminq_task() until iavf_close timeouts. We must send 4537 * IAVF_FLAG_AQ_GET_CONFIG before IAVF_FLAG_AQ_DISABLE_QUEUES to make 4538 * disable queues possible for vf. Give only necessary flags to 4539 * iavf_down and save other to set them right before iavf_close() 4540 * returns, when IAVF_FLAG_AQ_DISABLE_QUEUES will be already sent and 4541 * iavf will be in DOWN state. 4542 */ 4543 aq_to_restore = adapter->aq_required; 4544 adapter->aq_required &= IAVF_FLAG_AQ_GET_CONFIG; 4545 4546 /* Remove flags which we do not want to send after close or we want to 4547 * send before disable queues. 4548 */ 4549 aq_to_restore &= ~(IAVF_FLAG_AQ_GET_CONFIG | 4550 IAVF_FLAG_AQ_ENABLE_QUEUES | 4551 IAVF_FLAG_AQ_CONFIGURE_QUEUES | 4552 IAVF_FLAG_AQ_ADD_VLAN_FILTER | 4553 IAVF_FLAG_AQ_ADD_MAC_FILTER | 4554 IAVF_FLAG_AQ_ADD_CLOUD_FILTER | 4555 IAVF_FLAG_AQ_ADD_FDIR_FILTER | 4556 IAVF_FLAG_AQ_ADD_ADV_RSS_CFG); 4557 4558 iavf_down(adapter); 4559 iavf_change_state(adapter, __IAVF_DOWN_PENDING); 4560 iavf_free_traffic_irqs(adapter); 4561 4562 netdev_unlock(netdev); 4563 4564 /* We explicitly don't free resources here because the hardware is 4565 * still active and can DMA into memory. Resources are cleared in 4566 * iavf_virtchnl_completion() after we get confirmation from the PF 4567 * driver that the rings have been stopped. 4568 * 4569 * Also, we wait for state to transition to __IAVF_DOWN before 4570 * returning. State change occurs in iavf_virtchnl_completion() after 4571 * VF resources are released (which occurs after PF driver processes and 4572 * responds to admin queue commands). 4573 */ 4574 4575 status = wait_event_timeout(adapter->down_waitqueue, 4576 adapter->state == __IAVF_DOWN, 4577 msecs_to_jiffies(500)); 4578 if (!status) 4579 netdev_warn(netdev, "Device resources not yet released\n"); 4580 netdev_lock(netdev); 4581 4582 adapter->aq_required |= aq_to_restore; 4583 4584 return 0; 4585 } 4586 4587 /** 4588 * iavf_change_mtu - Change the Maximum Transfer Unit 4589 * @netdev: network interface device structure 4590 * @new_mtu: new value for maximum frame size 4591 * 4592 * Returns 0 on success, negative on failure 4593 **/ 4594 static int iavf_change_mtu(struct net_device *netdev, int new_mtu) 4595 { 4596 struct iavf_adapter *adapter = netdev_priv(netdev); 4597 4598 netdev_dbg(netdev, "changing MTU from %d to %d\n", 4599 netdev->mtu, new_mtu); 4600 WRITE_ONCE(netdev->mtu, new_mtu); 4601 4602 if (netif_running(netdev)) { 4603 adapter->flags |= IAVF_FLAG_RESET_NEEDED; 4604 iavf_reset_step(adapter); 4605 } 4606 4607 return 0; 4608 } 4609 4610 /** 4611 * iavf_disable_fdir - disable Flow Director and clear existing filters 4612 * @adapter: board private structure 4613 **/ 4614 static void iavf_disable_fdir(struct iavf_adapter *adapter) 4615 { 4616 struct iavf_fdir_fltr *fdir, *fdirtmp; 4617 bool del_filters = false; 4618 4619 adapter->flags &= ~IAVF_FLAG_FDIR_ENABLED; 4620 4621 /* remove all Flow Director filters */ 4622 spin_lock_bh(&adapter->fdir_fltr_lock); 4623 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, 4624 list) { 4625 if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST || 4626 fdir->state == IAVF_FDIR_FLTR_INACTIVE) { 4627 /* Delete filters not registered in PF */ 4628 list_del(&fdir->list); 4629 iavf_dec_fdir_active_fltr(adapter, fdir); 4630 kfree(fdir); 4631 } else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING || 4632 fdir->state == IAVF_FDIR_FLTR_DIS_REQUEST || 4633 fdir->state == IAVF_FDIR_FLTR_ACTIVE) { 4634 /* Filters registered in PF, schedule their deletion */ 4635 fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST; 4636 del_filters = true; 4637 } else if (fdir->state == IAVF_FDIR_FLTR_DIS_PENDING) { 4638 /* Request to delete filter already sent to PF, change 4639 * state to DEL_PENDING to delete filter after PF's 4640 * response, not set as INACTIVE 4641 */ 4642 fdir->state = IAVF_FDIR_FLTR_DEL_PENDING; 4643 } 4644 } 4645 spin_unlock_bh(&adapter->fdir_fltr_lock); 4646 4647 if (del_filters) { 4648 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 4649 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); 4650 } 4651 } 4652 4653 #define NETIF_VLAN_OFFLOAD_FEATURES (NETIF_F_HW_VLAN_CTAG_RX | \ 4654 NETIF_F_HW_VLAN_CTAG_TX | \ 4655 NETIF_F_HW_VLAN_STAG_RX | \ 4656 NETIF_F_HW_VLAN_STAG_TX) 4657 4658 /** 4659 * iavf_set_features - set the netdev feature flags 4660 * @netdev: ptr to the netdev being adjusted 4661 * @features: the feature set that the stack is suggesting 4662 * Note: expects to be called while under rtnl_lock() 4663 **/ 4664 static int iavf_set_features(struct net_device *netdev, 4665 netdev_features_t features) 4666 { 4667 struct iavf_adapter *adapter = netdev_priv(netdev); 4668 4669 /* trigger update on any VLAN feature change */ 4670 if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^ 4671 (features & NETIF_VLAN_OFFLOAD_FEATURES)) 4672 iavf_set_vlan_offload_features(adapter, netdev->features, 4673 features); 4674 if (CRC_OFFLOAD_ALLOWED(adapter) && 4675 ((netdev->features & NETIF_F_RXFCS) ^ (features & NETIF_F_RXFCS))) 4676 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 4677 4678 if ((netdev->features & NETIF_F_NTUPLE) ^ (features & NETIF_F_NTUPLE)) { 4679 if (features & NETIF_F_NTUPLE) 4680 adapter->flags |= IAVF_FLAG_FDIR_ENABLED; 4681 else 4682 iavf_disable_fdir(adapter); 4683 } 4684 4685 return 0; 4686 } 4687 4688 /** 4689 * iavf_features_check - Validate encapsulated packet conforms to limits 4690 * @skb: skb buff 4691 * @dev: This physical port's netdev 4692 * @features: Offload features that the stack believes apply 4693 **/ 4694 static netdev_features_t iavf_features_check(struct sk_buff *skb, 4695 struct net_device *dev, 4696 netdev_features_t features) 4697 { 4698 size_t len; 4699 4700 /* No point in doing any of this if neither checksum nor GSO are 4701 * being requested for this frame. We can rule out both by just 4702 * checking for CHECKSUM_PARTIAL 4703 */ 4704 if (skb->ip_summed != CHECKSUM_PARTIAL) 4705 return features; 4706 4707 /* We cannot support GSO if the MSS is going to be less than 4708 * 64 bytes. If it is then we need to drop support for GSO. 4709 */ 4710 if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64)) 4711 features &= ~NETIF_F_GSO_MASK; 4712 4713 /* MACLEN can support at most 63 words */ 4714 len = skb_network_offset(skb); 4715 if (len & ~(63 * 2)) 4716 goto out_err; 4717 4718 /* IPLEN and EIPLEN can support at most 127 dwords */ 4719 len = skb_network_header_len(skb); 4720 if (len & ~(127 * 4)) 4721 goto out_err; 4722 4723 if (skb->encapsulation) { 4724 /* L4TUNLEN can support 127 words */ 4725 len = skb_inner_network_header(skb) - skb_transport_header(skb); 4726 if (len & ~(127 * 2)) 4727 goto out_err; 4728 4729 /* IPLEN can support at most 127 dwords */ 4730 len = skb_inner_transport_header(skb) - 4731 skb_inner_network_header(skb); 4732 if (len & ~(127 * 4)) 4733 goto out_err; 4734 } 4735 4736 /* No need to validate L4LEN as TCP is the only protocol with a 4737 * flexible value and we support all possible values supported 4738 * by TCP, which is at most 15 dwords 4739 */ 4740 4741 return features; 4742 out_err: 4743 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 4744 } 4745 4746 /** 4747 * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off 4748 * @adapter: board private structure 4749 * 4750 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4751 * were negotiated determine the VLAN features that can be toggled on and off. 4752 **/ 4753 static netdev_features_t 4754 iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter) 4755 { 4756 netdev_features_t hw_features = 0; 4757 4758 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4759 return hw_features; 4760 4761 /* Enable VLAN features if supported */ 4762 if (VLAN_ALLOWED(adapter)) { 4763 hw_features |= (NETIF_F_HW_VLAN_CTAG_TX | 4764 NETIF_F_HW_VLAN_CTAG_RX); 4765 } else if (VLAN_V2_ALLOWED(adapter)) { 4766 struct virtchnl_vlan_caps *vlan_v2_caps = 4767 &adapter->vlan_v2_caps; 4768 struct virtchnl_vlan_supported_caps *stripping_support = 4769 &vlan_v2_caps->offloads.stripping_support; 4770 struct virtchnl_vlan_supported_caps *insertion_support = 4771 &vlan_v2_caps->offloads.insertion_support; 4772 4773 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4774 stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4775 if (stripping_support->outer & 4776 VIRTCHNL_VLAN_ETHERTYPE_8100) 4777 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4778 if (stripping_support->outer & 4779 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4780 hw_features |= NETIF_F_HW_VLAN_STAG_RX; 4781 } else if (stripping_support->inner != 4782 VIRTCHNL_VLAN_UNSUPPORTED && 4783 stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4784 if (stripping_support->inner & 4785 VIRTCHNL_VLAN_ETHERTYPE_8100) 4786 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4787 } 4788 4789 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4790 insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4791 if (insertion_support->outer & 4792 VIRTCHNL_VLAN_ETHERTYPE_8100) 4793 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4794 if (insertion_support->outer & 4795 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4796 hw_features |= NETIF_F_HW_VLAN_STAG_TX; 4797 } else if (insertion_support->inner && 4798 insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4799 if (insertion_support->inner & 4800 VIRTCHNL_VLAN_ETHERTYPE_8100) 4801 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4802 } 4803 } 4804 4805 if (CRC_OFFLOAD_ALLOWED(adapter)) 4806 hw_features |= NETIF_F_RXFCS; 4807 4808 return hw_features; 4809 } 4810 4811 /** 4812 * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures 4813 * @adapter: board private structure 4814 * 4815 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4816 * were negotiated determine the VLAN features that are enabled by default. 4817 **/ 4818 static netdev_features_t 4819 iavf_get_netdev_vlan_features(struct iavf_adapter *adapter) 4820 { 4821 netdev_features_t features = 0; 4822 4823 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4824 return features; 4825 4826 if (VLAN_ALLOWED(adapter)) { 4827 features |= NETIF_F_HW_VLAN_CTAG_FILTER | 4828 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX; 4829 } else if (VLAN_V2_ALLOWED(adapter)) { 4830 struct virtchnl_vlan_caps *vlan_v2_caps = 4831 &adapter->vlan_v2_caps; 4832 struct virtchnl_vlan_supported_caps *filtering_support = 4833 &vlan_v2_caps->filtering.filtering_support; 4834 struct virtchnl_vlan_supported_caps *stripping_support = 4835 &vlan_v2_caps->offloads.stripping_support; 4836 struct virtchnl_vlan_supported_caps *insertion_support = 4837 &vlan_v2_caps->offloads.insertion_support; 4838 u32 ethertype_init; 4839 4840 /* give priority to outer stripping and don't support both outer 4841 * and inner stripping 4842 */ 4843 ethertype_init = vlan_v2_caps->offloads.ethertype_init; 4844 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4845 if (stripping_support->outer & 4846 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4847 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4848 features |= NETIF_F_HW_VLAN_CTAG_RX; 4849 else if (stripping_support->outer & 4850 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4851 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4852 features |= NETIF_F_HW_VLAN_STAG_RX; 4853 } else if (stripping_support->inner != 4854 VIRTCHNL_VLAN_UNSUPPORTED) { 4855 if (stripping_support->inner & 4856 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4857 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4858 features |= NETIF_F_HW_VLAN_CTAG_RX; 4859 } 4860 4861 /* give priority to outer insertion and don't support both outer 4862 * and inner insertion 4863 */ 4864 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4865 if (insertion_support->outer & 4866 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4867 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4868 features |= NETIF_F_HW_VLAN_CTAG_TX; 4869 else if (insertion_support->outer & 4870 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4871 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4872 features |= NETIF_F_HW_VLAN_STAG_TX; 4873 } else if (insertion_support->inner != 4874 VIRTCHNL_VLAN_UNSUPPORTED) { 4875 if (insertion_support->inner & 4876 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4877 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4878 features |= NETIF_F_HW_VLAN_CTAG_TX; 4879 } 4880 4881 /* give priority to outer filtering and don't bother if both 4882 * outer and inner filtering are enabled 4883 */ 4884 ethertype_init = vlan_v2_caps->filtering.ethertype_init; 4885 if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4886 if (filtering_support->outer & 4887 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4888 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4889 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4890 if (filtering_support->outer & 4891 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4892 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4893 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4894 } else if (filtering_support->inner != 4895 VIRTCHNL_VLAN_UNSUPPORTED) { 4896 if (filtering_support->inner & 4897 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4898 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4899 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4900 if (filtering_support->inner & 4901 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4902 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4903 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4904 } 4905 } 4906 4907 return features; 4908 } 4909 4910 #define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \ 4911 (!(((requested) & (feature_bit)) && \ 4912 !((allowed) & (feature_bit)))) 4913 4914 /** 4915 * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support 4916 * @adapter: board private structure 4917 * @requested_features: stack requested NETDEV features 4918 **/ 4919 static netdev_features_t 4920 iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter, 4921 netdev_features_t requested_features) 4922 { 4923 netdev_features_t allowed_features; 4924 4925 allowed_features = iavf_get_netdev_vlan_hw_features(adapter) | 4926 iavf_get_netdev_vlan_features(adapter); 4927 4928 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4929 allowed_features, 4930 NETIF_F_HW_VLAN_CTAG_TX)) 4931 requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX; 4932 4933 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4934 allowed_features, 4935 NETIF_F_HW_VLAN_CTAG_RX)) 4936 requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX; 4937 4938 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4939 allowed_features, 4940 NETIF_F_HW_VLAN_STAG_TX)) 4941 requested_features &= ~NETIF_F_HW_VLAN_STAG_TX; 4942 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4943 allowed_features, 4944 NETIF_F_HW_VLAN_STAG_RX)) 4945 requested_features &= ~NETIF_F_HW_VLAN_STAG_RX; 4946 4947 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4948 allowed_features, 4949 NETIF_F_HW_VLAN_CTAG_FILTER)) 4950 requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4951 4952 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4953 allowed_features, 4954 NETIF_F_HW_VLAN_STAG_FILTER)) 4955 requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER; 4956 4957 if ((requested_features & 4958 (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) && 4959 (requested_features & 4960 (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) && 4961 adapter->vlan_v2_caps.offloads.ethertype_match == 4962 VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) { 4963 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"); 4964 requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX | 4965 NETIF_F_HW_VLAN_STAG_TX); 4966 } 4967 4968 return requested_features; 4969 } 4970 4971 /** 4972 * iavf_fix_strip_features - fix NETDEV CRC and VLAN strip features 4973 * @adapter: board private structure 4974 * @requested_features: stack requested NETDEV features 4975 * 4976 * Returns fixed-up features bits 4977 **/ 4978 static netdev_features_t 4979 iavf_fix_strip_features(struct iavf_adapter *adapter, 4980 netdev_features_t requested_features) 4981 { 4982 struct net_device *netdev = adapter->netdev; 4983 bool crc_offload_req, is_vlan_strip; 4984 netdev_features_t vlan_strip; 4985 int num_non_zero_vlan; 4986 4987 crc_offload_req = CRC_OFFLOAD_ALLOWED(adapter) && 4988 (requested_features & NETIF_F_RXFCS); 4989 num_non_zero_vlan = iavf_get_num_vlans_added(adapter); 4990 vlan_strip = (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX); 4991 is_vlan_strip = requested_features & vlan_strip; 4992 4993 if (!crc_offload_req) 4994 return requested_features; 4995 4996 if (!num_non_zero_vlan && (netdev->features & vlan_strip) && 4997 !(netdev->features & NETIF_F_RXFCS) && is_vlan_strip) { 4998 requested_features &= ~vlan_strip; 4999 netdev_info(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n"); 5000 return requested_features; 5001 } 5002 5003 if ((netdev->features & NETIF_F_RXFCS) && is_vlan_strip) { 5004 requested_features &= ~vlan_strip; 5005 if (!(netdev->features & vlan_strip)) 5006 netdev_info(netdev, "To enable VLAN stripping, first need to enable FCS/CRC stripping"); 5007 5008 return requested_features; 5009 } 5010 5011 if (num_non_zero_vlan && is_vlan_strip && 5012 !(netdev->features & NETIF_F_RXFCS)) { 5013 requested_features &= ~NETIF_F_RXFCS; 5014 netdev_info(netdev, "To disable FCS/CRC stripping, first need to disable VLAN stripping"); 5015 } 5016 5017 return requested_features; 5018 } 5019 5020 /** 5021 * iavf_fix_features - fix up the netdev feature bits 5022 * @netdev: our net device 5023 * @features: desired feature bits 5024 * 5025 * Returns fixed-up features bits 5026 **/ 5027 static netdev_features_t iavf_fix_features(struct net_device *netdev, 5028 netdev_features_t features) 5029 { 5030 struct iavf_adapter *adapter = netdev_priv(netdev); 5031 5032 features = iavf_fix_netdev_vlan_features(adapter, features); 5033 5034 if (!FDIR_FLTR_SUPPORT(adapter)) 5035 features &= ~NETIF_F_NTUPLE; 5036 5037 return iavf_fix_strip_features(adapter, features); 5038 } 5039 5040 static int iavf_hwstamp_get(struct net_device *netdev, 5041 struct kernel_hwtstamp_config *config) 5042 { 5043 struct iavf_adapter *adapter = netdev_priv(netdev); 5044 5045 *config = adapter->ptp.hwtstamp_config; 5046 5047 return 0; 5048 } 5049 5050 static int iavf_hwstamp_set(struct net_device *netdev, 5051 struct kernel_hwtstamp_config *config, 5052 struct netlink_ext_ack *extack) 5053 { 5054 struct iavf_adapter *adapter = netdev_priv(netdev); 5055 5056 return iavf_ptp_set_ts_config(adapter, config, extack); 5057 } 5058 5059 static int 5060 iavf_verify_shaper(struct net_shaper_binding *binding, 5061 const struct net_shaper *shaper, 5062 struct netlink_ext_ack *extack) 5063 { 5064 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5065 u64 vf_max; 5066 5067 if (shaper->handle.scope == NET_SHAPER_SCOPE_QUEUE) { 5068 vf_max = adapter->qos_caps->cap[0].shaper.peak; 5069 if (vf_max && shaper->bw_max > vf_max) { 5070 NL_SET_ERR_MSG_FMT(extack, "Max rate (%llu) of queue %d can't exceed max TX rate of VF (%llu kbps)", 5071 shaper->bw_max, shaper->handle.id, 5072 vf_max); 5073 return -EINVAL; 5074 } 5075 } 5076 return 0; 5077 } 5078 5079 static int 5080 iavf_shaper_set(struct net_shaper_binding *binding, 5081 const struct net_shaper *shaper, 5082 struct netlink_ext_ack *extack) 5083 { 5084 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5085 const struct net_shaper_handle *handle = &shaper->handle; 5086 struct iavf_ring *tx_ring; 5087 int ret; 5088 5089 netdev_assert_locked(adapter->netdev); 5090 5091 if (handle->id >= adapter->num_active_queues) 5092 return 0; 5093 5094 ret = iavf_verify_shaper(binding, shaper, extack); 5095 if (ret) 5096 return ret; 5097 5098 tx_ring = &adapter->tx_rings[handle->id]; 5099 5100 tx_ring->q_shaper.bw_min = div_u64(shaper->bw_min, 1000); 5101 tx_ring->q_shaper.bw_max = div_u64(shaper->bw_max, 1000); 5102 tx_ring->q_shaper_update = true; 5103 5104 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 5105 5106 return 0; 5107 } 5108 5109 static int iavf_shaper_del(struct net_shaper_binding *binding, 5110 const struct net_shaper_handle *handle, 5111 struct netlink_ext_ack *extack) 5112 { 5113 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5114 struct iavf_ring *tx_ring; 5115 5116 netdev_assert_locked(adapter->netdev); 5117 5118 if (handle->id >= adapter->num_active_queues) 5119 return 0; 5120 5121 tx_ring = &adapter->tx_rings[handle->id]; 5122 tx_ring->q_shaper.bw_min = 0; 5123 tx_ring->q_shaper.bw_max = 0; 5124 tx_ring->q_shaper_update = true; 5125 5126 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 5127 5128 return 0; 5129 } 5130 5131 static void iavf_shaper_cap(struct net_shaper_binding *binding, 5132 enum net_shaper_scope scope, 5133 unsigned long *flags) 5134 { 5135 if (scope != NET_SHAPER_SCOPE_QUEUE) 5136 return; 5137 5138 *flags = BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MIN) | 5139 BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MAX) | 5140 BIT(NET_SHAPER_A_CAPS_SUPPORT_METRIC_BPS); 5141 } 5142 5143 static const struct net_shaper_ops iavf_shaper_ops = { 5144 .set = iavf_shaper_set, 5145 .delete = iavf_shaper_del, 5146 .capabilities = iavf_shaper_cap, 5147 }; 5148 5149 static const struct net_device_ops iavf_netdev_ops = { 5150 .ndo_open = iavf_open, 5151 .ndo_stop = iavf_close, 5152 .ndo_start_xmit = iavf_xmit_frame, 5153 .ndo_set_rx_mode = iavf_set_rx_mode, 5154 .ndo_validate_addr = eth_validate_addr, 5155 .ndo_set_mac_address = iavf_set_mac, 5156 .ndo_change_mtu = iavf_change_mtu, 5157 .ndo_tx_timeout = iavf_tx_timeout, 5158 .ndo_vlan_rx_add_vid = iavf_vlan_rx_add_vid, 5159 .ndo_vlan_rx_kill_vid = iavf_vlan_rx_kill_vid, 5160 .ndo_features_check = iavf_features_check, 5161 .ndo_fix_features = iavf_fix_features, 5162 .ndo_set_features = iavf_set_features, 5163 .ndo_setup_tc = iavf_setup_tc, 5164 .net_shaper_ops = &iavf_shaper_ops, 5165 .ndo_hwtstamp_get = iavf_hwstamp_get, 5166 .ndo_hwtstamp_set = iavf_hwstamp_set, 5167 }; 5168 5169 /** 5170 * iavf_check_reset_complete - check that VF reset is complete 5171 * @hw: pointer to hw struct 5172 * 5173 * Returns 0 if device is ready to use, or -EBUSY if it's in reset. 5174 **/ 5175 static int iavf_check_reset_complete(struct iavf_hw *hw) 5176 { 5177 u32 rstat; 5178 int i; 5179 5180 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 5181 rstat = rd32(hw, IAVF_VFGEN_RSTAT) & 5182 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 5183 if ((rstat == VIRTCHNL_VFR_VFACTIVE) || 5184 (rstat == VIRTCHNL_VFR_COMPLETED)) 5185 return 0; 5186 msleep(IAVF_RESET_WAIT_MS); 5187 } 5188 return -EBUSY; 5189 } 5190 5191 /** 5192 * iavf_process_config - Process the config information we got from the PF 5193 * @adapter: board private structure 5194 * 5195 * Verify that we have a valid config struct, and set up our netdev features 5196 * and our VSI struct. 5197 **/ 5198 int iavf_process_config(struct iavf_adapter *adapter) 5199 { 5200 struct virtchnl_vf_resource *vfres = adapter->vf_res; 5201 netdev_features_t hw_vlan_features, vlan_features; 5202 struct net_device *netdev = adapter->netdev; 5203 netdev_features_t hw_enc_features; 5204 netdev_features_t hw_features; 5205 5206 hw_enc_features = NETIF_F_SG | 5207 NETIF_F_IP_CSUM | 5208 NETIF_F_IPV6_CSUM | 5209 NETIF_F_HIGHDMA | 5210 NETIF_F_SOFT_FEATURES | 5211 NETIF_F_TSO | 5212 NETIF_F_TSO_ECN | 5213 NETIF_F_TSO6 | 5214 NETIF_F_SCTP_CRC | 5215 NETIF_F_RXHASH | 5216 NETIF_F_RXCSUM | 5217 0; 5218 5219 /* advertise to stack only if offloads for encapsulated packets is 5220 * supported 5221 */ 5222 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) { 5223 hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL | 5224 NETIF_F_GSO_GRE | 5225 NETIF_F_GSO_GRE_CSUM | 5226 NETIF_F_GSO_IPXIP4 | 5227 NETIF_F_GSO_IPXIP6 | 5228 NETIF_F_GSO_UDP_TUNNEL_CSUM | 5229 NETIF_F_GSO_PARTIAL | 5230 0; 5231 5232 if (!(vfres->vf_cap_flags & 5233 VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 5234 netdev->gso_partial_features |= 5235 NETIF_F_GSO_UDP_TUNNEL_CSUM; 5236 5237 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; 5238 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; 5239 netdev->hw_enc_features |= hw_enc_features; 5240 } 5241 /* record features VLANs can make use of */ 5242 netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID; 5243 5244 /* Write features and hw_features separately to avoid polluting 5245 * with, or dropping, features that are set when we registered. 5246 */ 5247 hw_features = hw_enc_features; 5248 5249 /* get HW VLAN features that can be toggled */ 5250 hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter); 5251 5252 /* Enable HW TC offload if ADQ or tc U32 is supported */ 5253 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ || 5254 TC_U32_SUPPORT(adapter)) 5255 hw_features |= NETIF_F_HW_TC; 5256 5257 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO) 5258 hw_features |= NETIF_F_GSO_UDP_L4; 5259 5260 netdev->hw_features |= hw_features | hw_vlan_features; 5261 vlan_features = iavf_get_netdev_vlan_features(adapter); 5262 5263 netdev->features |= hw_features | vlan_features; 5264 5265 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN) 5266 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 5267 5268 if (FDIR_FLTR_SUPPORT(adapter)) { 5269 netdev->hw_features |= NETIF_F_NTUPLE; 5270 netdev->features |= NETIF_F_NTUPLE; 5271 adapter->flags |= IAVF_FLAG_FDIR_ENABLED; 5272 } 5273 5274 netdev->priv_flags |= IFF_UNICAST_FLT; 5275 5276 /* Do not turn on offloads when they are requested to be turned off. 5277 * TSO needs minimum 576 bytes to work correctly. 5278 */ 5279 if (netdev->wanted_features) { 5280 if (!(netdev->wanted_features & NETIF_F_TSO) || 5281 netdev->mtu < 576) 5282 netdev->features &= ~NETIF_F_TSO; 5283 if (!(netdev->wanted_features & NETIF_F_TSO6) || 5284 netdev->mtu < 576) 5285 netdev->features &= ~NETIF_F_TSO6; 5286 if (!(netdev->wanted_features & NETIF_F_TSO_ECN)) 5287 netdev->features &= ~NETIF_F_TSO_ECN; 5288 if (!(netdev->wanted_features & NETIF_F_GRO)) 5289 netdev->features &= ~NETIF_F_GRO; 5290 if (!(netdev->wanted_features & NETIF_F_GSO)) 5291 netdev->features &= ~NETIF_F_GSO; 5292 } 5293 5294 return 0; 5295 } 5296 5297 /** 5298 * iavf_probe - Device Initialization Routine 5299 * @pdev: PCI device information struct 5300 * @ent: entry in iavf_pci_tbl 5301 * 5302 * Returns 0 on success, negative on failure 5303 * 5304 * iavf_probe initializes an adapter identified by a pci_dev structure. 5305 * The OS initialization, configuring of the adapter private structure, 5306 * and a hardware reset occur. 5307 **/ 5308 static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 5309 { 5310 struct net_device *netdev; 5311 struct iavf_adapter *adapter = NULL; 5312 struct iavf_hw *hw = NULL; 5313 int err, len; 5314 5315 err = pci_enable_device(pdev); 5316 if (err) 5317 return err; 5318 5319 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 5320 if (err) { 5321 dev_err(&pdev->dev, 5322 "DMA configuration failed: 0x%x\n", err); 5323 goto err_dma; 5324 } 5325 5326 err = pci_request_regions(pdev, iavf_driver_name); 5327 if (err) { 5328 dev_err(&pdev->dev, 5329 "pci_request_regions failed 0x%x\n", err); 5330 goto err_pci_reg; 5331 } 5332 5333 pci_set_master(pdev); 5334 5335 netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter), 5336 IAVF_MAX_REQ_QUEUES); 5337 if (!netdev) { 5338 err = -ENOMEM; 5339 goto err_alloc_etherdev; 5340 } 5341 5342 netif_set_affinity_auto(netdev); 5343 SET_NETDEV_DEV(netdev, &pdev->dev); 5344 5345 pci_set_drvdata(pdev, netdev); 5346 adapter = netdev_priv(netdev); 5347 5348 adapter->netdev = netdev; 5349 adapter->pdev = pdev; 5350 5351 hw = &adapter->hw; 5352 hw->back = adapter; 5353 5354 adapter->wq = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, 5355 iavf_driver_name); 5356 if (!adapter->wq) { 5357 err = -ENOMEM; 5358 goto err_alloc_wq; 5359 } 5360 5361 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 5362 iavf_change_state(adapter, __IAVF_STARTUP); 5363 5364 /* Call save state here because it relies on the adapter struct. */ 5365 pci_save_state(pdev); 5366 5367 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 5368 pci_resource_len(pdev, 0)); 5369 if (!hw->hw_addr) { 5370 err = -EIO; 5371 goto err_ioremap; 5372 } 5373 hw->vendor_id = pdev->vendor; 5374 hw->device_id = pdev->device; 5375 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); 5376 hw->subsystem_vendor_id = pdev->subsystem_vendor; 5377 hw->subsystem_device_id = pdev->subsystem_device; 5378 hw->bus.device = PCI_SLOT(pdev->devfn); 5379 hw->bus.func = PCI_FUNC(pdev->devfn); 5380 hw->bus.bus_id = pdev->bus->number; 5381 5382 len = struct_size(adapter->qos_caps, cap, IAVF_MAX_QOS_TC_NUM); 5383 adapter->qos_caps = kzalloc(len, GFP_KERNEL); 5384 if (!adapter->qos_caps) { 5385 err = -ENOMEM; 5386 goto err_alloc_qos_cap; 5387 } 5388 5389 mutex_init(&hw->aq.asq_mutex); 5390 mutex_init(&hw->aq.arq_mutex); 5391 5392 spin_lock_init(&adapter->mac_vlan_list_lock); 5393 spin_lock_init(&adapter->cloud_filter_list_lock); 5394 spin_lock_init(&adapter->fdir_fltr_lock); 5395 spin_lock_init(&adapter->adv_rss_lock); 5396 spin_lock_init(&adapter->current_netdev_promisc_flags_lock); 5397 5398 INIT_LIST_HEAD(&adapter->mac_filter_list); 5399 INIT_LIST_HEAD(&adapter->vlan_filter_list); 5400 INIT_LIST_HEAD(&adapter->cloud_filter_list); 5401 INIT_LIST_HEAD(&adapter->fdir_list_head); 5402 INIT_LIST_HEAD(&adapter->adv_rss_list_head); 5403 5404 INIT_WORK(&adapter->reset_task, iavf_reset_task); 5405 INIT_WORK(&adapter->adminq_task, iavf_adminq_task); 5406 INIT_WORK(&adapter->finish_config, iavf_finish_config); 5407 INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task); 5408 5409 /* Setup the wait queue for indicating transition to down status */ 5410 init_waitqueue_head(&adapter->down_waitqueue); 5411 5412 /* Setup the wait queue for indicating virtchannel events */ 5413 init_waitqueue_head(&adapter->vc_waitqueue); 5414 5415 INIT_LIST_HEAD(&adapter->ptp.aq_cmds); 5416 init_waitqueue_head(&adapter->ptp.phc_time_waitqueue); 5417 mutex_init(&adapter->ptp.aq_cmd_lock); 5418 5419 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 5420 msecs_to_jiffies(5 * (pdev->devfn & 0x07))); 5421 /* Initialization goes on in the work. Do not add more of it below. */ 5422 return 0; 5423 5424 err_alloc_qos_cap: 5425 iounmap(hw->hw_addr); 5426 err_ioremap: 5427 destroy_workqueue(adapter->wq); 5428 err_alloc_wq: 5429 free_netdev(netdev); 5430 err_alloc_etherdev: 5431 pci_release_regions(pdev); 5432 err_pci_reg: 5433 err_dma: 5434 pci_disable_device(pdev); 5435 return err; 5436 } 5437 5438 /** 5439 * iavf_suspend - Power management suspend routine 5440 * @dev_d: device info pointer 5441 * 5442 * Called when the system (VM) is entering sleep/suspend. 5443 **/ 5444 static int iavf_suspend(struct device *dev_d) 5445 { 5446 struct net_device *netdev = dev_get_drvdata(dev_d); 5447 struct iavf_adapter *adapter = netdev_priv(netdev); 5448 bool running; 5449 5450 netif_device_detach(netdev); 5451 5452 running = netif_running(netdev); 5453 if (running) 5454 rtnl_lock(); 5455 netdev_lock(netdev); 5456 5457 if (running) 5458 iavf_down(adapter); 5459 5460 iavf_free_misc_irq(adapter); 5461 iavf_reset_interrupt_capability(adapter); 5462 5463 netdev_unlock(netdev); 5464 if (running) 5465 rtnl_unlock(); 5466 5467 return 0; 5468 } 5469 5470 /** 5471 * iavf_resume - Power management resume routine 5472 * @dev_d: device info pointer 5473 * 5474 * Called when the system (VM) is resumed from sleep/suspend. 5475 **/ 5476 static int iavf_resume(struct device *dev_d) 5477 { 5478 struct pci_dev *pdev = to_pci_dev(dev_d); 5479 struct iavf_adapter *adapter; 5480 int err; 5481 5482 adapter = iavf_pdev_to_adapter(pdev); 5483 5484 pci_set_master(pdev); 5485 5486 rtnl_lock(); 5487 err = iavf_set_interrupt_capability(adapter); 5488 if (err) { 5489 rtnl_unlock(); 5490 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); 5491 return err; 5492 } 5493 err = iavf_request_misc_irq(adapter); 5494 rtnl_unlock(); 5495 if (err) { 5496 dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); 5497 return err; 5498 } 5499 5500 queue_work(adapter->wq, &adapter->reset_task); 5501 5502 netif_device_attach(adapter->netdev); 5503 5504 return err; 5505 } 5506 5507 /** 5508 * iavf_remove - Device Removal Routine 5509 * @pdev: PCI device information struct 5510 * 5511 * iavf_remove is called by the PCI subsystem to alert the driver 5512 * that it should release a PCI device. The could be caused by a 5513 * Hot-Plug event, or because the driver is going to be removed from 5514 * memory. 5515 **/ 5516 static void iavf_remove(struct pci_dev *pdev) 5517 { 5518 struct iavf_fdir_fltr *fdir, *fdirtmp; 5519 struct iavf_vlan_filter *vlf, *vlftmp; 5520 struct iavf_cloud_filter *cf, *cftmp; 5521 struct iavf_adv_rss *rss, *rsstmp; 5522 struct iavf_mac_filter *f, *ftmp; 5523 struct iavf_adapter *adapter; 5524 struct net_device *netdev; 5525 struct iavf_hw *hw; 5526 5527 /* Don't proceed with remove if netdev is already freed */ 5528 netdev = pci_get_drvdata(pdev); 5529 if (!netdev) 5530 return; 5531 5532 adapter = iavf_pdev_to_adapter(pdev); 5533 hw = &adapter->hw; 5534 5535 if (test_and_set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 5536 return; 5537 5538 /* Wait until port initialization is complete. 5539 * There are flows where register/unregister netdev may race. 5540 */ 5541 while (1) { 5542 netdev_lock(netdev); 5543 if (adapter->state == __IAVF_RUNNING || 5544 adapter->state == __IAVF_DOWN || 5545 adapter->state == __IAVF_INIT_FAILED) { 5546 netdev_unlock(netdev); 5547 break; 5548 } 5549 /* Simply return if we already went through iavf_shutdown */ 5550 if (adapter->state == __IAVF_REMOVE) { 5551 netdev_unlock(netdev); 5552 return; 5553 } 5554 5555 netdev_unlock(netdev); 5556 usleep_range(500, 1000); 5557 } 5558 cancel_delayed_work_sync(&adapter->watchdog_task); 5559 cancel_work_sync(&adapter->finish_config); 5560 5561 if (netdev->reg_state == NETREG_REGISTERED) 5562 unregister_netdev(netdev); 5563 5564 netdev_lock(netdev); 5565 dev_info(&adapter->pdev->dev, "Removing device\n"); 5566 iavf_change_state(adapter, __IAVF_REMOVE); 5567 5568 iavf_request_reset(adapter); 5569 msleep(50); 5570 /* If the FW isn't responding, kick it once, but only once. */ 5571 if (!iavf_asq_done(hw)) { 5572 iavf_request_reset(adapter); 5573 msleep(50); 5574 } 5575 5576 iavf_ptp_release(adapter); 5577 5578 iavf_misc_irq_disable(adapter); 5579 /* Shut down all the garbage mashers on the detention level */ 5580 netdev_unlock(netdev); 5581 cancel_work_sync(&adapter->reset_task); 5582 cancel_delayed_work_sync(&adapter->watchdog_task); 5583 cancel_work_sync(&adapter->adminq_task); 5584 netdev_lock(netdev); 5585 5586 adapter->aq_required = 0; 5587 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 5588 5589 iavf_free_all_tx_resources(adapter); 5590 iavf_free_all_rx_resources(adapter); 5591 iavf_free_misc_irq(adapter); 5592 iavf_free_interrupt_scheme(adapter); 5593 5594 iavf_free_rss(adapter); 5595 5596 if (hw->aq.asq.count) 5597 iavf_shutdown_adminq(hw); 5598 5599 /* destroy the locks only once, here */ 5600 mutex_destroy(&hw->aq.arq_mutex); 5601 mutex_destroy(&hw->aq.asq_mutex); 5602 netdev_unlock(netdev); 5603 5604 iounmap(hw->hw_addr); 5605 pci_release_regions(pdev); 5606 kfree(adapter->vf_res); 5607 spin_lock_bh(&adapter->mac_vlan_list_lock); 5608 /* If we got removed before an up/down sequence, we've got a filter 5609 * hanging out there that we need to get rid of. 5610 */ 5611 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 5612 list_del(&f->list); 5613 kfree(f); 5614 } 5615 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 5616 list) { 5617 list_del(&vlf->list); 5618 kfree(vlf); 5619 } 5620 5621 spin_unlock_bh(&adapter->mac_vlan_list_lock); 5622 5623 spin_lock_bh(&adapter->cloud_filter_list_lock); 5624 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 5625 list_del(&cf->list); 5626 kfree(cf); 5627 } 5628 spin_unlock_bh(&adapter->cloud_filter_list_lock); 5629 5630 spin_lock_bh(&adapter->fdir_fltr_lock); 5631 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) { 5632 list_del(&fdir->list); 5633 kfree(fdir); 5634 } 5635 spin_unlock_bh(&adapter->fdir_fltr_lock); 5636 5637 spin_lock_bh(&adapter->adv_rss_lock); 5638 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 5639 list) { 5640 list_del(&rss->list); 5641 kfree(rss); 5642 } 5643 spin_unlock_bh(&adapter->adv_rss_lock); 5644 5645 destroy_workqueue(adapter->wq); 5646 5647 pci_set_drvdata(pdev, NULL); 5648 5649 free_netdev(netdev); 5650 5651 pci_disable_device(pdev); 5652 } 5653 5654 /** 5655 * iavf_shutdown - Shutdown the device in preparation for a reboot 5656 * @pdev: pci device structure 5657 **/ 5658 static void iavf_shutdown(struct pci_dev *pdev) 5659 { 5660 iavf_remove(pdev); 5661 5662 if (system_state == SYSTEM_POWER_OFF) 5663 pci_set_power_state(pdev, PCI_D3hot); 5664 } 5665 5666 static DEFINE_SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume); 5667 5668 static struct pci_driver iavf_driver = { 5669 .name = iavf_driver_name, 5670 .id_table = iavf_pci_tbl, 5671 .probe = iavf_probe, 5672 .remove = iavf_remove, 5673 .driver.pm = pm_sleep_ptr(&iavf_pm_ops), 5674 .shutdown = iavf_shutdown, 5675 }; 5676 5677 /** 5678 * iavf_init_module - Driver Registration Routine 5679 * 5680 * iavf_init_module is the first routine called when the driver is 5681 * loaded. All it does is register with the PCI subsystem. 5682 **/ 5683 static int __init iavf_init_module(void) 5684 { 5685 pr_info("iavf: %s\n", iavf_driver_string); 5686 5687 pr_info("%s\n", iavf_copyright); 5688 5689 return pci_register_driver(&iavf_driver); 5690 } 5691 5692 module_init(iavf_init_module); 5693 5694 /** 5695 * iavf_exit_module - Driver Exit Cleanup Routine 5696 * 5697 * iavf_exit_module is called just before the driver is removed 5698 * from memory. 5699 **/ 5700 static void __exit iavf_exit_module(void) 5701 { 5702 pci_unregister_driver(&iavf_driver); 5703 } 5704 5705 module_exit(iavf_exit_module); 5706 5707 /* iavf_main.c */ 5708