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iavf_main.c
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linux-6.19.14/drivers/net/ethernet/intel/iavf/iavf_main.c
1// SPDX-License-Identifier: GPL-2.0 2/* Copyright(c) 2013 - 2018 Intel Corporation. */ 3 4#include <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 17static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter); 18static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter); 19static int iavf_close(struct net_device *netdev); 20static void iavf_init_get_resources(struct iavf_adapter *adapter); 21static int iavf_check_reset_complete(struct iavf_hw *hw); 22 23char iavf_driver_name[] = "iavf"; 24static const char iavf_driver_string[] = 25 "Intel(R) Ethernet Adaptive Virtual Function Network Driver"; 26 27static 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 */ 38static 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 47MODULE_DEVICE_TABLE(pci, iavf_pci_tbl); 48 49MODULE_ALIAS("i40evf"); 50MODULE_DESCRIPTION("Intel(R) Ethernet Adaptive Virtual Function Network Driver"); 51MODULE_IMPORT_NS("LIBETH"); 52MODULE_IMPORT_NS("LIBIE"); 53MODULE_IMPORT_NS("LIBIE_ADMINQ"); 54MODULE_LICENSE("GPL v2"); 55 56static const struct net_device_ops iavf_netdev_ops; 57 58int 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 144int 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 */ 169static 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 */ 178static 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 **/ 195enum 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 **/ 218enum 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 **/ 235enum 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 **/ 255void 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 **/ 265void 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 **/ 280void 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 **/ 291static 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 **/ 303static 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 **/ 321static 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 **/ 336static 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 **/ 355static 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 **/ 372void 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 **/ 388static 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 **/ 410static 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 **/ 428static void 429iavf_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 **/ 454static void 455iavf_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 **/ 484static 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 **/ 514static int 515iavf_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 558free_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 **/ 575static 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 **/ 601static 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 **/ 625static 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 **/ 641static 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 */ 660static 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 **/ 697static 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 **/ 717static struct 718iavf_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 **/ 739static struct 740iavf_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(sizeof(*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 /* Re-add the filter since we cannot tell whether the 761 * pending delete has already been processed by the PF. 762 * A duplicate add is harmless. 763 */ 764 f->state = IAVF_VLAN_ADD; 765 iavf_schedule_aq_request(adapter, 766 IAVF_FLAG_AQ_ADD_VLAN_FILTER); 767 } 768 769clearout: 770 spin_unlock_bh(&adapter->mac_vlan_list_lock); 771 return f; 772} 773 774/** 775 * iavf_del_vlan - Remove a vlan filter from the list 776 * @adapter: board private structure 777 * @vlan: VLAN tag 778 **/ 779static void iavf_del_vlan(struct iavf_adapter *adapter, struct iavf_vlan vlan) 780{ 781 struct iavf_vlan_filter *f; 782 783 spin_lock_bh(&adapter->mac_vlan_list_lock); 784 785 f = iavf_find_vlan(adapter, vlan); 786 if (f) { 787 /* IAVF_ADD_VLAN means that VLAN wasn't even added yet. 788 * Remove it from the list. 789 */ 790 if (f->state == IAVF_VLAN_ADD) { 791 list_del(&f->list); 792 kfree(f); 793 adapter->num_vlan_filters--; 794 } else { 795 f->state = IAVF_VLAN_REMOVE; 796 iavf_schedule_aq_request(adapter, 797 IAVF_FLAG_AQ_DEL_VLAN_FILTER); 798 } 799 } 800 801 spin_unlock_bh(&adapter->mac_vlan_list_lock); 802} 803 804/** 805 * iavf_restore_filters 806 * @adapter: board private structure 807 * 808 * Restore existing non MAC filters when VF netdev comes back up 809 **/ 810static void iavf_restore_filters(struct iavf_adapter *adapter) 811{ 812 struct iavf_vlan_filter *f; 813 814 /* re-add all VLAN filters */ 815 spin_lock_bh(&adapter->mac_vlan_list_lock); 816 817 list_for_each_entry(f, &adapter->vlan_filter_list, list) { 818 if (f->state == IAVF_VLAN_INACTIVE) 819 f->state = IAVF_VLAN_ADD; 820 } 821 822 spin_unlock_bh(&adapter->mac_vlan_list_lock); 823 adapter->aq_required |= IAVF_FLAG_AQ_ADD_VLAN_FILTER; 824} 825 826/** 827 * iavf_get_num_vlans_added - get number of VLANs added 828 * @adapter: board private structure 829 */ 830u16 iavf_get_num_vlans_added(struct iavf_adapter *adapter) 831{ 832 return adapter->num_vlan_filters; 833} 834 835/** 836 * iavf_get_max_vlans_allowed - get maximum VLANs allowed for this VF 837 * @adapter: board private structure 838 * 839 * This depends on the negotiated VLAN capability. For VIRTCHNL_VF_OFFLOAD_VLAN, 840 * do not impose a limit as that maintains current behavior and for 841 * VIRTCHNL_VF_OFFLOAD_VLAN_V2, use the maximum allowed sent from the PF. 842 **/ 843static u16 iavf_get_max_vlans_allowed(struct iavf_adapter *adapter) 844{ 845 /* don't impose any limit for VIRTCHNL_VF_OFFLOAD_VLAN since there has 846 * never been a limit on the VF driver side 847 */ 848 if (VLAN_ALLOWED(adapter)) 849 return VLAN_N_VID; 850 else if (VLAN_V2_ALLOWED(adapter)) 851 return adapter->vlan_v2_caps.filtering.max_filters; 852 853 return 0; 854} 855 856/** 857 * iavf_max_vlans_added - check if maximum VLANs allowed already exist 858 * @adapter: board private structure 859 **/ 860static bool iavf_max_vlans_added(struct iavf_adapter *adapter) 861{ 862 if (iavf_get_num_vlans_added(adapter) < 863 iavf_get_max_vlans_allowed(adapter)) 864 return false; 865 866 return true; 867} 868 869/** 870 * iavf_vlan_rx_add_vid - Add a VLAN filter to a device 871 * @netdev: network device struct 872 * @proto: unused protocol data 873 * @vid: VLAN tag 874 **/ 875static int iavf_vlan_rx_add_vid(struct net_device *netdev, 876 __always_unused __be16 proto, u16 vid) 877{ 878 struct iavf_adapter *adapter = netdev_priv(netdev); 879 880 /* Do not track VLAN 0 filter, always added by the PF on VF init */ 881 if (!vid) 882 return 0; 883 884 if (!VLAN_FILTERING_ALLOWED(adapter)) 885 return -EIO; 886 887 if (iavf_max_vlans_added(adapter)) { 888 netdev_err(netdev, "Max allowed VLAN filters %u. Remove existing VLANs or disable filtering via Ethtool if supported.\n", 889 iavf_get_max_vlans_allowed(adapter)); 890 return -EIO; 891 } 892 893 if (!iavf_add_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto)))) 894 return -ENOMEM; 895 896 return 0; 897} 898 899/** 900 * iavf_vlan_rx_kill_vid - Remove a VLAN filter from a device 901 * @netdev: network device struct 902 * @proto: unused protocol data 903 * @vid: VLAN tag 904 **/ 905static int iavf_vlan_rx_kill_vid(struct net_device *netdev, 906 __always_unused __be16 proto, u16 vid) 907{ 908 struct iavf_adapter *adapter = netdev_priv(netdev); 909 910 /* We do not track VLAN 0 filter */ 911 if (!vid) 912 return 0; 913 914 iavf_del_vlan(adapter, IAVF_VLAN(vid, be16_to_cpu(proto))); 915 return 0; 916} 917 918/** 919 * iavf_find_filter - Search filter list for specific mac filter 920 * @adapter: board private structure 921 * @macaddr: the MAC address 922 * 923 * Returns ptr to the filter object or NULL. Must be called while holding the 924 * mac_vlan_list_lock. 925 **/ 926static struct 927iavf_mac_filter *iavf_find_filter(struct iavf_adapter *adapter, 928 const u8 *macaddr) 929{ 930 struct iavf_mac_filter *f; 931 932 if (!macaddr) 933 return NULL; 934 935 list_for_each_entry(f, &adapter->mac_filter_list, list) { 936 if (ether_addr_equal(macaddr, f->macaddr)) 937 return f; 938 } 939 return NULL; 940} 941 942/** 943 * iavf_add_filter - Add a mac filter to the filter list 944 * @adapter: board private structure 945 * @macaddr: the MAC address 946 * 947 * Returns ptr to the filter object or NULL when no memory available. 948 **/ 949struct iavf_mac_filter *iavf_add_filter(struct iavf_adapter *adapter, 950 const u8 *macaddr) 951{ 952 struct iavf_mac_filter *f; 953 954 if (!macaddr) 955 return NULL; 956 957 f = iavf_find_filter(adapter, macaddr); 958 if (!f) { 959 f = kzalloc(sizeof(*f), GFP_ATOMIC); 960 if (!f) 961 return f; 962 963 ether_addr_copy(f->macaddr, macaddr); 964 965 list_add_tail(&f->list, &adapter->mac_filter_list); 966 f->add = true; 967 f->add_handled = false; 968 f->is_new_mac = true; 969 f->is_primary = ether_addr_equal(macaddr, adapter->hw.mac.addr); 970 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 971 } else { 972 f->remove = false; 973 } 974 975 return f; 976} 977 978/** 979 * iavf_replace_primary_mac - Replace current primary address 980 * @adapter: board private structure 981 * @new_mac: new MAC address to be applied 982 * 983 * Replace current dev_addr and send request to PF for removal of previous 984 * primary MAC address filter and addition of new primary MAC filter. 985 * Return 0 for success, -ENOMEM for failure. 986 * 987 * Do not call this with mac_vlan_list_lock! 988 **/ 989static int iavf_replace_primary_mac(struct iavf_adapter *adapter, 990 const u8 *new_mac) 991{ 992 struct iavf_hw *hw = &adapter->hw; 993 struct iavf_mac_filter *new_f; 994 struct iavf_mac_filter *old_f; 995 996 spin_lock_bh(&adapter->mac_vlan_list_lock); 997 998 new_f = iavf_add_filter(adapter, new_mac); 999 if (!new_f) { 1000 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1001 return -ENOMEM; 1002 } 1003 1004 old_f = iavf_find_filter(adapter, hw->mac.addr); 1005 if (old_f) { 1006 old_f->is_primary = false; 1007 old_f->remove = true; 1008 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1009 } 1010 /* Always send the request to add if changing primary MAC, 1011 * even if filter is already present on the list 1012 */ 1013 new_f->is_primary = true; 1014 new_f->add = true; 1015 ether_addr_copy(hw->mac.addr, new_mac); 1016 1017 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1018 1019 /* schedule the watchdog task to immediately process the request */ 1020 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ADD_MAC_FILTER); 1021 return 0; 1022} 1023 1024/** 1025 * iavf_is_mac_set_handled - wait for a response to set MAC from PF 1026 * @netdev: network interface device structure 1027 * @macaddr: MAC address to set 1028 * 1029 * Returns true on success, false on failure 1030 */ 1031static bool iavf_is_mac_set_handled(struct net_device *netdev, 1032 const u8 *macaddr) 1033{ 1034 struct iavf_adapter *adapter = netdev_priv(netdev); 1035 struct iavf_mac_filter *f; 1036 bool ret = false; 1037 1038 spin_lock_bh(&adapter->mac_vlan_list_lock); 1039 1040 f = iavf_find_filter(adapter, macaddr); 1041 1042 if (!f || (!f->add && f->add_handled)) 1043 ret = true; 1044 1045 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1046 1047 return ret; 1048} 1049 1050/** 1051 * iavf_set_mac - NDO callback to set port MAC address 1052 * @netdev: network interface device structure 1053 * @p: pointer to an address structure 1054 * 1055 * Returns 0 on success, negative on failure 1056 */ 1057static int iavf_set_mac(struct net_device *netdev, void *p) 1058{ 1059 struct iavf_adapter *adapter = netdev_priv(netdev); 1060 struct sockaddr *addr = p; 1061 int ret; 1062 1063 if (!is_valid_ether_addr(addr->sa_data)) 1064 return -EADDRNOTAVAIL; 1065 1066 ret = iavf_replace_primary_mac(adapter, addr->sa_data); 1067 1068 if (ret) 1069 return ret; 1070 1071 ret = wait_event_interruptible_timeout(adapter->vc_waitqueue, 1072 iavf_is_mac_set_handled(netdev, addr->sa_data), 1073 msecs_to_jiffies(2500)); 1074 1075 /* If ret < 0 then it means wait was interrupted. 1076 * If ret == 0 then it means we got a timeout. 1077 * else it means we got response for set MAC from PF, 1078 * check if netdev MAC was updated to requested MAC, 1079 * if yes then set MAC succeeded otherwise it failed return -EACCES 1080 */ 1081 if (ret < 0) 1082 return ret; 1083 1084 if (!ret) 1085 return -EAGAIN; 1086 1087 if (!ether_addr_equal(netdev->dev_addr, addr->sa_data)) 1088 return -EACCES; 1089 1090 return 0; 1091} 1092 1093/** 1094 * iavf_addr_sync - Callback for dev_(mc|uc)_sync to add address 1095 * @netdev: the netdevice 1096 * @addr: address to add 1097 * 1098 * Called by __dev_(mc|uc)_sync when an address needs to be added. We call 1099 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1100 */ 1101static int iavf_addr_sync(struct net_device *netdev, const u8 *addr) 1102{ 1103 struct iavf_adapter *adapter = netdev_priv(netdev); 1104 1105 if (iavf_add_filter(adapter, addr)) 1106 return 0; 1107 else 1108 return -ENOMEM; 1109} 1110 1111/** 1112 * iavf_addr_unsync - Callback for dev_(mc|uc)_sync to remove address 1113 * @netdev: the netdevice 1114 * @addr: address to add 1115 * 1116 * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call 1117 * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock. 1118 */ 1119static int iavf_addr_unsync(struct net_device *netdev, const u8 *addr) 1120{ 1121 struct iavf_adapter *adapter = netdev_priv(netdev); 1122 struct iavf_mac_filter *f; 1123 1124 /* Under some circumstances, we might receive a request to delete 1125 * our own device address from our uc list. Because we store the 1126 * device address in the VSI's MAC/VLAN filter list, we need to ignore 1127 * such requests and not delete our device address from this list. 1128 */ 1129 if (ether_addr_equal(addr, netdev->dev_addr)) 1130 return 0; 1131 1132 f = iavf_find_filter(adapter, addr); 1133 if (f) { 1134 f->remove = true; 1135 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1136 } 1137 return 0; 1138} 1139 1140/** 1141 * iavf_promiscuous_mode_changed - check if promiscuous mode bits changed 1142 * @adapter: device specific adapter 1143 */ 1144bool iavf_promiscuous_mode_changed(struct iavf_adapter *adapter) 1145{ 1146 return (adapter->current_netdev_promisc_flags ^ adapter->netdev->flags) & 1147 (IFF_PROMISC | IFF_ALLMULTI); 1148} 1149 1150/** 1151 * iavf_set_rx_mode - NDO callback to set the netdev filters 1152 * @netdev: network interface device structure 1153 **/ 1154static void iavf_set_rx_mode(struct net_device *netdev) 1155{ 1156 struct iavf_adapter *adapter = netdev_priv(netdev); 1157 1158 spin_lock_bh(&adapter->mac_vlan_list_lock); 1159 __dev_uc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); 1160 __dev_mc_sync(netdev, iavf_addr_sync, iavf_addr_unsync); 1161 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1162 1163 spin_lock_bh(&adapter->current_netdev_promisc_flags_lock); 1164 if (iavf_promiscuous_mode_changed(adapter)) 1165 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE; 1166 spin_unlock_bh(&adapter->current_netdev_promisc_flags_lock); 1167} 1168 1169/** 1170 * iavf_napi_enable_all - enable NAPI on all queue vectors 1171 * @adapter: board private structure 1172 **/ 1173static void iavf_napi_enable_all(struct iavf_adapter *adapter) 1174{ 1175 int q_idx; 1176 struct iavf_q_vector *q_vector; 1177 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1178 1179 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1180 struct napi_struct *napi; 1181 1182 q_vector = &adapter->q_vectors[q_idx]; 1183 napi = &q_vector->napi; 1184 napi_enable_locked(napi); 1185 } 1186} 1187 1188/** 1189 * iavf_napi_disable_all - disable NAPI on all queue vectors 1190 * @adapter: board private structure 1191 **/ 1192static void iavf_napi_disable_all(struct iavf_adapter *adapter) 1193{ 1194 int q_idx; 1195 struct iavf_q_vector *q_vector; 1196 int q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1197 1198 for (q_idx = 0; q_idx < q_vectors; q_idx++) { 1199 q_vector = &adapter->q_vectors[q_idx]; 1200 napi_disable_locked(&q_vector->napi); 1201 } 1202} 1203 1204/** 1205 * iavf_configure - set up transmit and receive data structures 1206 * @adapter: board private structure 1207 **/ 1208static void iavf_configure(struct iavf_adapter *adapter) 1209{ 1210 struct net_device *netdev = adapter->netdev; 1211 int i; 1212 1213 iavf_set_rx_mode(netdev); 1214 1215 iavf_configure_tx(adapter); 1216 iavf_configure_rx(adapter); 1217 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES; 1218 1219 for (i = 0; i < adapter->num_active_queues; i++) { 1220 struct iavf_ring *ring = &adapter->rx_rings[i]; 1221 1222 iavf_alloc_rx_buffers(ring, IAVF_DESC_UNUSED(ring)); 1223 } 1224} 1225 1226/** 1227 * iavf_up_complete - Finish the last steps of bringing up a connection 1228 * @adapter: board private structure 1229 */ 1230static void iavf_up_complete(struct iavf_adapter *adapter) 1231{ 1232 netdev_assert_locked(adapter->netdev); 1233 1234 iavf_change_state(adapter, __IAVF_RUNNING); 1235 clear_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1236 1237 iavf_napi_enable_all(adapter); 1238 1239 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_ENABLE_QUEUES); 1240} 1241 1242/** 1243 * iavf_clear_mac_vlan_filters - Remove mac and vlan filters not sent to PF 1244 * yet and mark other to be removed. 1245 * @adapter: board private structure 1246 **/ 1247static void iavf_clear_mac_vlan_filters(struct iavf_adapter *adapter) 1248{ 1249 struct iavf_vlan_filter *vlf, *vlftmp; 1250 struct iavf_mac_filter *f, *ftmp; 1251 1252 spin_lock_bh(&adapter->mac_vlan_list_lock); 1253 /* clear the sync flag on all filters */ 1254 __dev_uc_unsync(adapter->netdev, NULL); 1255 __dev_mc_unsync(adapter->netdev, NULL); 1256 1257 /* remove all MAC filters */ 1258 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, 1259 list) { 1260 if (f->add) { 1261 list_del(&f->list); 1262 kfree(f); 1263 } else { 1264 f->remove = true; 1265 } 1266 } 1267 1268 /* disable all VLAN filters */ 1269 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 1270 list) 1271 vlf->state = IAVF_VLAN_DISABLE; 1272 1273 spin_unlock_bh(&adapter->mac_vlan_list_lock); 1274} 1275 1276/** 1277 * iavf_clear_cloud_filters - Remove cloud filters not sent to PF yet and 1278 * mark other to be removed. 1279 * @adapter: board private structure 1280 **/ 1281static void iavf_clear_cloud_filters(struct iavf_adapter *adapter) 1282{ 1283 struct iavf_cloud_filter *cf, *cftmp; 1284 1285 /* remove all cloud filters */ 1286 spin_lock_bh(&adapter->cloud_filter_list_lock); 1287 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 1288 list) { 1289 if (cf->add) { 1290 list_del(&cf->list); 1291 kfree(cf); 1292 adapter->num_cloud_filters--; 1293 } else { 1294 cf->del = true; 1295 } 1296 } 1297 spin_unlock_bh(&adapter->cloud_filter_list_lock); 1298} 1299 1300/** 1301 * iavf_clear_fdir_filters - Remove fdir filters not sent to PF yet and mark 1302 * other to be removed. 1303 * @adapter: board private structure 1304 **/ 1305static void iavf_clear_fdir_filters(struct iavf_adapter *adapter) 1306{ 1307 struct iavf_fdir_fltr *fdir; 1308 1309 /* remove all Flow Director filters */ 1310 spin_lock_bh(&adapter->fdir_fltr_lock); 1311 list_for_each_entry(fdir, &adapter->fdir_list_head, list) { 1312 if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST) { 1313 /* Cancel a request, keep filter as inactive */ 1314 fdir->state = IAVF_FDIR_FLTR_INACTIVE; 1315 } else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING || 1316 fdir->state == IAVF_FDIR_FLTR_ACTIVE) { 1317 /* Disable filters which are active or have a pending 1318 * request to PF to be added 1319 */ 1320 fdir->state = IAVF_FDIR_FLTR_DIS_REQUEST; 1321 } 1322 } 1323 spin_unlock_bh(&adapter->fdir_fltr_lock); 1324} 1325 1326/** 1327 * iavf_clear_adv_rss_conf - Remove adv rss conf not sent to PF yet and mark 1328 * other to be removed. 1329 * @adapter: board private structure 1330 **/ 1331static void iavf_clear_adv_rss_conf(struct iavf_adapter *adapter) 1332{ 1333 struct iavf_adv_rss *rss, *rsstmp; 1334 1335 /* remove all advance RSS configuration */ 1336 spin_lock_bh(&adapter->adv_rss_lock); 1337 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 1338 list) { 1339 if (rss->state == IAVF_ADV_RSS_ADD_REQUEST) { 1340 list_del(&rss->list); 1341 kfree(rss); 1342 } else { 1343 rss->state = IAVF_ADV_RSS_DEL_REQUEST; 1344 } 1345 } 1346 spin_unlock_bh(&adapter->adv_rss_lock); 1347} 1348 1349/** 1350 * iavf_down - Shutdown the connection processing 1351 * @adapter: board private structure 1352 */ 1353void iavf_down(struct iavf_adapter *adapter) 1354{ 1355 struct net_device *netdev = adapter->netdev; 1356 1357 netdev_assert_locked(netdev); 1358 1359 if (adapter->state <= __IAVF_DOWN_PENDING) 1360 return; 1361 1362 netif_carrier_off(netdev); 1363 netif_tx_disable(netdev); 1364 adapter->link_up = false; 1365 iavf_napi_disable_all(adapter); 1366 iavf_irq_disable(adapter); 1367 1368 iavf_clear_mac_vlan_filters(adapter); 1369 iavf_clear_cloud_filters(adapter); 1370 iavf_clear_fdir_filters(adapter); 1371 iavf_clear_adv_rss_conf(adapter); 1372 1373 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 1374 return; 1375 1376 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 1377 /* cancel any current operation */ 1378 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 1379 /* Schedule operations to close down the HW. Don't wait 1380 * here for this to complete. The watchdog is still running 1381 * and it will take care of this. 1382 */ 1383 if (!list_empty(&adapter->mac_filter_list)) 1384 adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER; 1385 if (!list_empty(&adapter->vlan_filter_list)) 1386 adapter->aq_required |= IAVF_FLAG_AQ_DEL_VLAN_FILTER; 1387 if (!list_empty(&adapter->cloud_filter_list)) 1388 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 1389 if (!list_empty(&adapter->fdir_list_head)) 1390 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 1391 if (!list_empty(&adapter->adv_rss_list_head)) 1392 adapter->aq_required |= IAVF_FLAG_AQ_DEL_ADV_RSS_CFG; 1393 } 1394 1395 iavf_schedule_aq_request(adapter, IAVF_FLAG_AQ_DISABLE_QUEUES); 1396} 1397 1398/** 1399 * iavf_acquire_msix_vectors - Setup the MSIX capability 1400 * @adapter: board private structure 1401 * @vectors: number of vectors to request 1402 * 1403 * Work with the OS to set up the MSIX vectors needed. 1404 * 1405 * Returns 0 on success, negative on failure 1406 **/ 1407static int 1408iavf_acquire_msix_vectors(struct iavf_adapter *adapter, int vectors) 1409{ 1410 int err, vector_threshold; 1411 1412 /* We'll want at least 3 (vector_threshold): 1413 * 0) Other (Admin Queue and link, mostly) 1414 * 1) TxQ[0] Cleanup 1415 * 2) RxQ[0] Cleanup 1416 */ 1417 vector_threshold = MIN_MSIX_COUNT; 1418 1419 /* The more we get, the more we will assign to Tx/Rx Cleanup 1420 * for the separate queues...where Rx Cleanup >= Tx Cleanup. 1421 * Right now, we simply care about how many we'll get; we'll 1422 * set them up later while requesting irq's. 1423 */ 1424 err = pci_enable_msix_range(adapter->pdev, adapter->msix_entries, 1425 vector_threshold, vectors); 1426 if (err < 0) { 1427 dev_err(&adapter->pdev->dev, "Unable to allocate MSI-X interrupts\n"); 1428 kfree(adapter->msix_entries); 1429 adapter->msix_entries = NULL; 1430 return err; 1431 } 1432 1433 /* Adjust for only the vectors we'll use, which is minimum 1434 * of max_msix_q_vectors + NONQ_VECS, or the number of 1435 * vectors we were allocated. 1436 */ 1437 adapter->num_msix_vectors = err; 1438 return 0; 1439} 1440 1441/** 1442 * iavf_free_queues - Free memory for all rings 1443 * @adapter: board private structure to initialize 1444 * 1445 * Free all of the memory associated with queue pairs. 1446 **/ 1447static void iavf_free_queues(struct iavf_adapter *adapter) 1448{ 1449 if (!adapter->vsi_res) 1450 return; 1451 adapter->num_active_queues = 0; 1452 kfree(adapter->tx_rings); 1453 adapter->tx_rings = NULL; 1454 kfree(adapter->rx_rings); 1455 adapter->rx_rings = NULL; 1456} 1457 1458/** 1459 * iavf_set_queue_vlan_tag_loc - set location for VLAN tag offload 1460 * @adapter: board private structure 1461 * 1462 * Based on negotiated capabilities, the VLAN tag needs to be inserted and/or 1463 * stripped in certain descriptor fields. Instead of checking the offload 1464 * capability bits in the hot path, cache the location the ring specific 1465 * flags. 1466 */ 1467void iavf_set_queue_vlan_tag_loc(struct iavf_adapter *adapter) 1468{ 1469 int i; 1470 1471 for (i = 0; i < adapter->num_active_queues; i++) { 1472 struct iavf_ring *tx_ring = &adapter->tx_rings[i]; 1473 struct iavf_ring *rx_ring = &adapter->rx_rings[i]; 1474 1475 /* prevent multiple L2TAG bits being set after VFR */ 1476 tx_ring->flags &= 1477 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1478 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2); 1479 rx_ring->flags &= 1480 ~(IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1 | 1481 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2); 1482 1483 if (VLAN_ALLOWED(adapter)) { 1484 tx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1485 rx_ring->flags |= IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1486 } else if (VLAN_V2_ALLOWED(adapter)) { 1487 struct virtchnl_vlan_supported_caps *stripping_support; 1488 struct virtchnl_vlan_supported_caps *insertion_support; 1489 1490 stripping_support = 1491 &adapter->vlan_v2_caps.offloads.stripping_support; 1492 insertion_support = 1493 &adapter->vlan_v2_caps.offloads.insertion_support; 1494 1495 if (stripping_support->outer) { 1496 if (stripping_support->outer & 1497 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1498 rx_ring->flags |= 1499 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1500 else if (stripping_support->outer & 1501 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1502 rx_ring->flags |= 1503 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1504 } else if (stripping_support->inner) { 1505 if (stripping_support->inner & 1506 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1507 rx_ring->flags |= 1508 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1509 else if (stripping_support->inner & 1510 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2_2) 1511 rx_ring->flags |= 1512 IAVF_RXR_FLAGS_VLAN_TAG_LOC_L2TAG2_2; 1513 } 1514 1515 if (insertion_support->outer) { 1516 if (insertion_support->outer & 1517 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1518 tx_ring->flags |= 1519 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1520 else if (insertion_support->outer & 1521 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1522 tx_ring->flags |= 1523 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1524 } else if (insertion_support->inner) { 1525 if (insertion_support->inner & 1526 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG1) 1527 tx_ring->flags |= 1528 IAVF_TXRX_FLAGS_VLAN_TAG_LOC_L2TAG1; 1529 else if (insertion_support->inner & 1530 VIRTCHNL_VLAN_TAG_LOCATION_L2TAG2) 1531 tx_ring->flags |= 1532 IAVF_TXR_FLAGS_VLAN_TAG_LOC_L2TAG2; 1533 } 1534 } 1535 } 1536} 1537 1538/** 1539 * iavf_alloc_queues - Allocate memory for all rings 1540 * @adapter: board private structure to initialize 1541 * 1542 * We allocate one ring per queue at run-time since we don't know the 1543 * number of queues at compile-time. The polling_netdev array is 1544 * intended for Multiqueue, but should work fine with a single queue. 1545 **/ 1546static int iavf_alloc_queues(struct iavf_adapter *adapter) 1547{ 1548 int i, num_active_queues; 1549 1550 /* If we're in reset reallocating queues we don't actually know yet for 1551 * certain the PF gave us the number of queues we asked for but we'll 1552 * assume it did. Once basic reset is finished we'll confirm once we 1553 * start negotiating config with PF. 1554 */ 1555 if (adapter->num_req_queues) 1556 num_active_queues = adapter->num_req_queues; 1557 else if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1558 adapter->num_tc) 1559 num_active_queues = adapter->ch_config.total_qps; 1560 else 1561 num_active_queues = min_t(int, 1562 adapter->vsi_res->num_queue_pairs, 1563 (int)(num_online_cpus())); 1564 1565 1566 adapter->tx_rings = kcalloc(num_active_queues, 1567 sizeof(struct iavf_ring), GFP_KERNEL); 1568 if (!adapter->tx_rings) 1569 goto err_out; 1570 adapter->rx_rings = kcalloc(num_active_queues, 1571 sizeof(struct iavf_ring), GFP_KERNEL); 1572 if (!adapter->rx_rings) 1573 goto err_out; 1574 1575 for (i = 0; i < num_active_queues; i++) { 1576 struct iavf_ring *tx_ring; 1577 struct iavf_ring *rx_ring; 1578 1579 tx_ring = &adapter->tx_rings[i]; 1580 1581 tx_ring->queue_index = i; 1582 tx_ring->netdev = adapter->netdev; 1583 tx_ring->dev = &adapter->pdev->dev; 1584 tx_ring->count = adapter->tx_desc_count; 1585 tx_ring->itr_setting = IAVF_ITR_TX_DEF; 1586 if (adapter->flags & IAVF_FLAG_WB_ON_ITR_CAPABLE) 1587 tx_ring->flags |= IAVF_TXR_FLAGS_WB_ON_ITR; 1588 1589 rx_ring = &adapter->rx_rings[i]; 1590 rx_ring->queue_index = i; 1591 rx_ring->netdev = adapter->netdev; 1592 rx_ring->count = adapter->rx_desc_count; 1593 rx_ring->itr_setting = IAVF_ITR_RX_DEF; 1594 } 1595 1596 adapter->num_active_queues = num_active_queues; 1597 1598 iavf_set_queue_vlan_tag_loc(adapter); 1599 1600 return 0; 1601 1602err_out: 1603 iavf_free_queues(adapter); 1604 return -ENOMEM; 1605} 1606 1607/** 1608 * iavf_set_interrupt_capability - set MSI-X or FAIL if not supported 1609 * @adapter: board private structure to initialize 1610 * 1611 * Attempt to configure the interrupts using the best available 1612 * capabilities of the hardware and the kernel. 1613 **/ 1614static int iavf_set_interrupt_capability(struct iavf_adapter *adapter) 1615{ 1616 int vector, v_budget; 1617 int pairs = 0; 1618 int err = 0; 1619 1620 if (!adapter->vsi_res) { 1621 err = -EIO; 1622 goto out; 1623 } 1624 pairs = adapter->num_active_queues; 1625 1626 /* It's easy to be greedy for MSI-X vectors, but it really doesn't do 1627 * us much good if we have more vectors than CPUs. However, we already 1628 * limit the total number of queues by the number of CPUs so we do not 1629 * need any further limiting here. 1630 */ 1631 v_budget = min_t(int, pairs + NONQ_VECS, 1632 (int)adapter->vf_res->max_vectors); 1633 1634 adapter->msix_entries = kcalloc(v_budget, 1635 sizeof(struct msix_entry), GFP_KERNEL); 1636 if (!adapter->msix_entries) { 1637 err = -ENOMEM; 1638 goto out; 1639 } 1640 1641 for (vector = 0; vector < v_budget; vector++) 1642 adapter->msix_entries[vector].entry = vector; 1643 1644 err = iavf_acquire_msix_vectors(adapter, v_budget); 1645 if (!err) 1646 iavf_schedule_finish_config(adapter); 1647 1648out: 1649 return err; 1650} 1651 1652/** 1653 * iavf_config_rss_aq - Configure RSS keys and lut by using AQ commands 1654 * @adapter: board private structure 1655 * 1656 * Return 0 on success, negative on failure 1657 **/ 1658static int iavf_config_rss_aq(struct iavf_adapter *adapter) 1659{ 1660 struct iavf_aqc_get_set_rss_key_data *rss_key = 1661 (struct iavf_aqc_get_set_rss_key_data *)adapter->rss_key; 1662 struct iavf_hw *hw = &adapter->hw; 1663 enum iavf_status status; 1664 1665 if (adapter->current_op != VIRTCHNL_OP_UNKNOWN) { 1666 /* bail because we already have a command pending */ 1667 dev_err(&adapter->pdev->dev, "Cannot configure RSS, command %d pending\n", 1668 adapter->current_op); 1669 return -EBUSY; 1670 } 1671 1672 status = iavf_aq_set_rss_key(hw, adapter->vsi.id, rss_key); 1673 if (status) { 1674 dev_err(&adapter->pdev->dev, "Cannot set RSS key, err %s aq_err %s\n", 1675 iavf_stat_str(hw, status), 1676 libie_aq_str(hw->aq.asq_last_status)); 1677 return iavf_status_to_errno(status); 1678 1679 } 1680 1681 status = iavf_aq_set_rss_lut(hw, adapter->vsi.id, false, 1682 adapter->rss_lut, adapter->rss_lut_size); 1683 if (status) { 1684 dev_err(&adapter->pdev->dev, "Cannot set RSS lut, err %s aq_err %s\n", 1685 iavf_stat_str(hw, status), 1686 libie_aq_str(hw->aq.asq_last_status)); 1687 return iavf_status_to_errno(status); 1688 } 1689 1690 return 0; 1691 1692} 1693 1694/** 1695 * iavf_config_rss_reg - Configure RSS keys and lut by writing registers 1696 * @adapter: board private structure 1697 * 1698 * Returns 0 on success, negative on failure 1699 **/ 1700static int iavf_config_rss_reg(struct iavf_adapter *adapter) 1701{ 1702 struct iavf_hw *hw = &adapter->hw; 1703 u32 *dw; 1704 u16 i; 1705 1706 dw = (u32 *)adapter->rss_key; 1707 for (i = 0; i < adapter->rss_key_size / 4; i++) 1708 wr32(hw, IAVF_VFQF_HKEY(i), dw[i]); 1709 1710 dw = (u32 *)adapter->rss_lut; 1711 for (i = 0; i < adapter->rss_lut_size / 4; i++) 1712 wr32(hw, IAVF_VFQF_HLUT(i), dw[i]); 1713 1714 iavf_flush(hw); 1715 1716 return 0; 1717} 1718 1719/** 1720 * iavf_config_rss - Configure RSS keys and lut 1721 * @adapter: board private structure 1722 * 1723 * Returns 0 on success, negative on failure 1724 **/ 1725int iavf_config_rss(struct iavf_adapter *adapter) 1726{ 1727 1728 if (RSS_PF(adapter)) { 1729 adapter->aq_required |= IAVF_FLAG_AQ_SET_RSS_LUT | 1730 IAVF_FLAG_AQ_SET_RSS_KEY; 1731 return 0; 1732 } else if (RSS_AQ(adapter)) { 1733 return iavf_config_rss_aq(adapter); 1734 } else { 1735 return iavf_config_rss_reg(adapter); 1736 } 1737} 1738 1739/** 1740 * iavf_fill_rss_lut - Fill the lut with default values 1741 * @adapter: board private structure 1742 **/ 1743static void iavf_fill_rss_lut(struct iavf_adapter *adapter) 1744{ 1745 u16 i; 1746 1747 for (i = 0; i < adapter->rss_lut_size; i++) 1748 adapter->rss_lut[i] = i % adapter->num_active_queues; 1749} 1750 1751/** 1752 * iavf_init_rss - Prepare for RSS 1753 * @adapter: board private structure 1754 * 1755 * Return 0 on success, negative on failure 1756 **/ 1757static int iavf_init_rss(struct iavf_adapter *adapter) 1758{ 1759 struct iavf_hw *hw = &adapter->hw; 1760 1761 if (!RSS_PF(adapter)) { 1762 /* Enable PCTYPES for RSS, TCP/UDP with IPv4/IPv6 */ 1763 if (adapter->vf_res->vf_cap_flags & 1764 VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) 1765 adapter->rss_hashcfg = 1766 IAVF_DEFAULT_RSS_HASHCFG_EXPANDED; 1767 else 1768 adapter->rss_hashcfg = IAVF_DEFAULT_RSS_HASHCFG; 1769 1770 wr32(hw, IAVF_VFQF_HENA(0), (u32)adapter->rss_hashcfg); 1771 wr32(hw, IAVF_VFQF_HENA(1), (u32)(adapter->rss_hashcfg >> 32)); 1772 } 1773 1774 iavf_fill_rss_lut(adapter); 1775 netdev_rss_key_fill((void *)adapter->rss_key, adapter->rss_key_size); 1776 1777 return iavf_config_rss(adapter); 1778} 1779 1780/** 1781 * iavf_alloc_q_vectors - Allocate memory for interrupt vectors 1782 * @adapter: board private structure to initialize 1783 * 1784 * We allocate one q_vector per queue interrupt. If allocation fails we 1785 * return -ENOMEM. 1786 **/ 1787static int iavf_alloc_q_vectors(struct iavf_adapter *adapter) 1788{ 1789 int q_idx = 0, num_q_vectors, irq_num; 1790 struct iavf_q_vector *q_vector; 1791 1792 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1793 adapter->q_vectors = kcalloc(num_q_vectors, sizeof(*q_vector), 1794 GFP_KERNEL); 1795 if (!adapter->q_vectors) 1796 return -ENOMEM; 1797 1798 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1799 irq_num = adapter->msix_entries[q_idx + NONQ_VECS].vector; 1800 q_vector = &adapter->q_vectors[q_idx]; 1801 q_vector->adapter = adapter; 1802 q_vector->vsi = &adapter->vsi; 1803 q_vector->v_idx = q_idx; 1804 q_vector->reg_idx = q_idx; 1805 netif_napi_add_config_locked(adapter->netdev, &q_vector->napi, 1806 iavf_napi_poll, q_idx); 1807 netif_napi_set_irq_locked(&q_vector->napi, irq_num); 1808 } 1809 1810 return 0; 1811} 1812 1813/** 1814 * iavf_free_q_vectors - Free memory allocated for interrupt vectors 1815 * @adapter: board private structure to initialize 1816 * 1817 * This function frees the memory allocated to the q_vectors. In addition if 1818 * NAPI is enabled it will delete any references to the NAPI struct prior 1819 * to freeing the q_vector. 1820 **/ 1821static void iavf_free_q_vectors(struct iavf_adapter *adapter) 1822{ 1823 int q_idx, num_q_vectors; 1824 1825 if (!adapter->q_vectors) 1826 return; 1827 1828 num_q_vectors = adapter->num_msix_vectors - NONQ_VECS; 1829 1830 for (q_idx = 0; q_idx < num_q_vectors; q_idx++) { 1831 struct iavf_q_vector *q_vector = &adapter->q_vectors[q_idx]; 1832 1833 netif_napi_del_locked(&q_vector->napi); 1834 } 1835 kfree(adapter->q_vectors); 1836 adapter->q_vectors = NULL; 1837} 1838 1839/** 1840 * iavf_reset_interrupt_capability - Reset MSIX setup 1841 * @adapter: board private structure 1842 * 1843 **/ 1844static void iavf_reset_interrupt_capability(struct iavf_adapter *adapter) 1845{ 1846 if (!adapter->msix_entries) 1847 return; 1848 1849 pci_disable_msix(adapter->pdev); 1850 kfree(adapter->msix_entries); 1851 adapter->msix_entries = NULL; 1852} 1853 1854/** 1855 * iavf_init_interrupt_scheme - Determine if MSIX is supported and init 1856 * @adapter: board private structure to initialize 1857 * 1858 **/ 1859static int iavf_init_interrupt_scheme(struct iavf_adapter *adapter) 1860{ 1861 int err; 1862 1863 err = iavf_alloc_queues(adapter); 1864 if (err) { 1865 dev_err(&adapter->pdev->dev, 1866 "Unable to allocate memory for queues\n"); 1867 goto err_alloc_queues; 1868 } 1869 1870 err = iavf_set_interrupt_capability(adapter); 1871 if (err) { 1872 dev_err(&adapter->pdev->dev, 1873 "Unable to setup interrupt capabilities\n"); 1874 goto err_set_interrupt; 1875 } 1876 1877 err = iavf_alloc_q_vectors(adapter); 1878 if (err) { 1879 dev_err(&adapter->pdev->dev, 1880 "Unable to allocate memory for queue vectors\n"); 1881 goto err_alloc_q_vectors; 1882 } 1883 1884 /* If we've made it so far while ADq flag being ON, then we haven't 1885 * bailed out anywhere in middle. And ADq isn't just enabled but actual 1886 * resources have been allocated in the reset path. 1887 * Now we can truly claim that ADq is enabled. 1888 */ 1889 if ((adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 1890 adapter->num_tc) 1891 dev_info(&adapter->pdev->dev, "ADq Enabled, %u TCs created", 1892 adapter->num_tc); 1893 1894 dev_info(&adapter->pdev->dev, "Multiqueue %s: Queue pair count = %u", 1895 (adapter->num_active_queues > 1) ? "Enabled" : "Disabled", 1896 adapter->num_active_queues); 1897 1898 return 0; 1899err_alloc_q_vectors: 1900 iavf_reset_interrupt_capability(adapter); 1901err_set_interrupt: 1902 iavf_free_queues(adapter); 1903err_alloc_queues: 1904 return err; 1905} 1906 1907/** 1908 * iavf_free_interrupt_scheme - Undo what iavf_init_interrupt_scheme does 1909 * @adapter: board private structure 1910 **/ 1911static void iavf_free_interrupt_scheme(struct iavf_adapter *adapter) 1912{ 1913 iavf_free_q_vectors(adapter); 1914 iavf_reset_interrupt_capability(adapter); 1915 iavf_free_queues(adapter); 1916} 1917 1918/** 1919 * iavf_free_rss - Free memory used by RSS structs 1920 * @adapter: board private structure 1921 **/ 1922static void iavf_free_rss(struct iavf_adapter *adapter) 1923{ 1924 kfree(adapter->rss_key); 1925 adapter->rss_key = NULL; 1926 1927 kfree(adapter->rss_lut); 1928 adapter->rss_lut = NULL; 1929} 1930 1931/** 1932 * iavf_reinit_interrupt_scheme - Reallocate queues and vectors 1933 * @adapter: board private structure 1934 * @running: true if adapter->state == __IAVF_RUNNING 1935 * 1936 * Returns 0 on success, negative on failure 1937 **/ 1938static int iavf_reinit_interrupt_scheme(struct iavf_adapter *adapter, bool running) 1939{ 1940 struct net_device *netdev = adapter->netdev; 1941 int err; 1942 1943 if (running) 1944 iavf_free_traffic_irqs(adapter); 1945 iavf_free_misc_irq(adapter); 1946 iavf_free_interrupt_scheme(adapter); 1947 1948 err = iavf_init_interrupt_scheme(adapter); 1949 if (err) 1950 goto err; 1951 1952 netif_tx_stop_all_queues(netdev); 1953 1954 err = iavf_request_misc_irq(adapter); 1955 if (err) 1956 goto err; 1957 1958 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 1959 1960 iavf_map_rings_to_vectors(adapter); 1961err: 1962 return err; 1963} 1964 1965/** 1966 * iavf_finish_config - do all netdev work that needs RTNL 1967 * @work: our work_struct 1968 * 1969 * Do work that needs RTNL. 1970 */ 1971static void iavf_finish_config(struct work_struct *work) 1972{ 1973 struct iavf_adapter *adapter; 1974 bool netdev_released = false; 1975 int pairs, err; 1976 1977 adapter = container_of(work, struct iavf_adapter, finish_config); 1978 1979 /* Always take RTNL first to prevent circular lock dependency; 1980 * the dev->lock (== netdev lock) is needed to update the queue number. 1981 */ 1982 rtnl_lock(); 1983 netdev_lock(adapter->netdev); 1984 1985 if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES) && 1986 adapter->netdev->reg_state == NETREG_REGISTERED && 1987 !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) { 1988 netdev_update_features(adapter->netdev); 1989 adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES; 1990 } 1991 1992 switch (adapter->state) { 1993 case __IAVF_DOWN: 1994 /* Set the real number of queues when reset occurs while 1995 * state == __IAVF_DOWN 1996 */ 1997 pairs = adapter->num_active_queues; 1998 netif_set_real_num_rx_queues(adapter->netdev, pairs); 1999 netif_set_real_num_tx_queues(adapter->netdev, pairs); 2000 2001 if (adapter->netdev->reg_state != NETREG_REGISTERED) { 2002 netdev_unlock(adapter->netdev); 2003 netdev_released = true; 2004 err = register_netdevice(adapter->netdev); 2005 if (err) { 2006 dev_err(&adapter->pdev->dev, "Unable to register netdev (%d)\n", 2007 err); 2008 2009 /* go back and try again.*/ 2010 netdev_lock(adapter->netdev); 2011 iavf_free_rss(adapter); 2012 iavf_free_misc_irq(adapter); 2013 iavf_reset_interrupt_capability(adapter); 2014 iavf_change_state(adapter, 2015 __IAVF_INIT_CONFIG_ADAPTER); 2016 netdev_unlock(adapter->netdev); 2017 goto out; 2018 } 2019 } 2020 break; 2021 case __IAVF_RUNNING: 2022 pairs = adapter->num_active_queues; 2023 netif_set_real_num_rx_queues(adapter->netdev, pairs); 2024 netif_set_real_num_tx_queues(adapter->netdev, pairs); 2025 break; 2026 2027 default: 2028 break; 2029 } 2030 2031out: 2032 if (!netdev_released) 2033 netdev_unlock(adapter->netdev); 2034 rtnl_unlock(); 2035} 2036 2037/** 2038 * iavf_schedule_finish_config - Set the flags and schedule a reset event 2039 * @adapter: board private structure 2040 **/ 2041void iavf_schedule_finish_config(struct iavf_adapter *adapter) 2042{ 2043 if (!test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 2044 queue_work(adapter->wq, &adapter->finish_config); 2045} 2046 2047/** 2048 * iavf_process_aq_command - process aq_required flags 2049 * and sends aq command 2050 * @adapter: pointer to iavf adapter structure 2051 * 2052 * Returns 0 on success 2053 * Returns error code if no command was sent 2054 * or error code if the command failed. 2055 **/ 2056static int iavf_process_aq_command(struct iavf_adapter *adapter) 2057{ 2058 if (adapter->aq_required & IAVF_FLAG_AQ_GET_CONFIG) 2059 return iavf_send_vf_config_msg(adapter); 2060 if (adapter->aq_required & IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS) 2061 return iavf_send_vf_offload_vlan_v2_msg(adapter); 2062 if (adapter->aq_required & IAVF_FLAG_AQ_GET_SUPPORTED_RXDIDS) 2063 return iavf_send_vf_supported_rxdids_msg(adapter); 2064 if (adapter->aq_required & IAVF_FLAG_AQ_GET_PTP_CAPS) 2065 return iavf_send_vf_ptp_caps_msg(adapter); 2066 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_QUEUES) { 2067 iavf_disable_queues(adapter); 2068 return 0; 2069 } 2070 2071 if (adapter->aq_required & IAVF_FLAG_AQ_MAP_VECTORS) { 2072 iavf_map_queues(adapter); 2073 return 0; 2074 } 2075 2076 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_MAC_FILTER) { 2077 iavf_add_ether_addrs(adapter); 2078 return 0; 2079 } 2080 2081 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_VLAN_FILTER) { 2082 iavf_add_vlans(adapter); 2083 return 0; 2084 } 2085 2086 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_MAC_FILTER) { 2087 iavf_del_ether_addrs(adapter); 2088 return 0; 2089 } 2090 2091 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_VLAN_FILTER) { 2092 iavf_del_vlans(adapter); 2093 return 0; 2094 } 2095 2096 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING) { 2097 iavf_enable_vlan_stripping(adapter); 2098 return 0; 2099 } 2100 2101 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING) { 2102 iavf_disable_vlan_stripping(adapter); 2103 return 0; 2104 } 2105 2106 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW) { 2107 iavf_cfg_queues_bw(adapter); 2108 return 0; 2109 } 2110 2111 if (adapter->aq_required & IAVF_FLAG_AQ_GET_QOS_CAPS) { 2112 iavf_get_qos_caps(adapter); 2113 return 0; 2114 } 2115 2116 if (adapter->aq_required & IAVF_FLAG_AQ_CFG_QUEUES_QUANTA_SIZE) { 2117 iavf_cfg_queues_quanta_size(adapter); 2118 return 0; 2119 } 2120 2121 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_QUEUES) { 2122 iavf_configure_queues(adapter); 2123 return 0; 2124 } 2125 2126 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_QUEUES) { 2127 iavf_enable_queues(adapter); 2128 return 0; 2129 } 2130 2131 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_RSS) { 2132 /* This message goes straight to the firmware, not the 2133 * PF, so we don't have to set current_op as we will 2134 * not get a response through the ARQ. 2135 */ 2136 adapter->aq_required &= ~IAVF_FLAG_AQ_CONFIGURE_RSS; 2137 return 0; 2138 } 2139 if (adapter->aq_required & IAVF_FLAG_AQ_GET_RSS_HASHCFG) { 2140 iavf_get_rss_hashcfg(adapter); 2141 return 0; 2142 } 2143 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HASHCFG) { 2144 iavf_set_rss_hashcfg(adapter); 2145 return 0; 2146 } 2147 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_KEY) { 2148 iavf_set_rss_key(adapter); 2149 return 0; 2150 } 2151 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_LUT) { 2152 iavf_set_rss_lut(adapter); 2153 return 0; 2154 } 2155 if (adapter->aq_required & IAVF_FLAG_AQ_SET_RSS_HFUNC) { 2156 iavf_set_rss_hfunc(adapter); 2157 return 0; 2158 } 2159 2160 if (adapter->aq_required & IAVF_FLAG_AQ_CONFIGURE_PROMISC_MODE) { 2161 iavf_set_promiscuous(adapter); 2162 return 0; 2163 } 2164 2165 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CHANNELS) { 2166 iavf_enable_channels(adapter); 2167 return 0; 2168 } 2169 2170 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CHANNELS) { 2171 iavf_disable_channels(adapter); 2172 return 0; 2173 } 2174 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_CLOUD_FILTER) { 2175 iavf_add_cloud_filter(adapter); 2176 return 0; 2177 } 2178 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_CLOUD_FILTER) { 2179 iavf_del_cloud_filter(adapter); 2180 return 0; 2181 } 2182 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_FDIR_FILTER) { 2183 iavf_add_fdir_filter(adapter); 2184 return IAVF_SUCCESS; 2185 } 2186 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_FDIR_FILTER) { 2187 iavf_del_fdir_filter(adapter); 2188 return IAVF_SUCCESS; 2189 } 2190 if (adapter->aq_required & IAVF_FLAG_AQ_ADD_ADV_RSS_CFG) { 2191 iavf_add_adv_rss_cfg(adapter); 2192 return 0; 2193 } 2194 if (adapter->aq_required & IAVF_FLAG_AQ_DEL_ADV_RSS_CFG) { 2195 iavf_del_adv_rss_cfg(adapter); 2196 return 0; 2197 } 2198 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING) { 2199 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2200 return 0; 2201 } 2202 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING) { 2203 iavf_disable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2204 return 0; 2205 } 2206 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING) { 2207 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021Q); 2208 return 0; 2209 } 2210 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING) { 2211 iavf_enable_vlan_stripping_v2(adapter, ETH_P_8021AD); 2212 return 0; 2213 } 2214 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION) { 2215 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2216 return 0; 2217 } 2218 if (adapter->aq_required & IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION) { 2219 iavf_disable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2220 return 0; 2221 } 2222 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION) { 2223 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021Q); 2224 return 0; 2225 } 2226 if (adapter->aq_required & IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION) { 2227 iavf_enable_vlan_insertion_v2(adapter, ETH_P_8021AD); 2228 return 0; 2229 } 2230 if (adapter->aq_required & IAVF_FLAG_AQ_SEND_PTP_CMD) { 2231 iavf_virtchnl_send_ptp_cmd(adapter); 2232 return IAVF_SUCCESS; 2233 } 2234 if (adapter->aq_required & IAVF_FLAG_AQ_REQUEST_STATS) { 2235 iavf_request_stats(adapter); 2236 return 0; 2237 } 2238 2239 return -EAGAIN; 2240} 2241 2242/** 2243 * iavf_set_vlan_offload_features - set VLAN offload configuration 2244 * @adapter: board private structure 2245 * @prev_features: previous features used for comparison 2246 * @features: updated features used for configuration 2247 * 2248 * Set the aq_required bit(s) based on the requested features passed in to 2249 * configure VLAN stripping and/or VLAN insertion if supported. Also, schedule 2250 * the watchdog if any changes are requested to expedite the request via 2251 * virtchnl. 2252 **/ 2253static void 2254iavf_set_vlan_offload_features(struct iavf_adapter *adapter, 2255 netdev_features_t prev_features, 2256 netdev_features_t features) 2257{ 2258 bool enable_stripping = true, enable_insertion = true; 2259 u16 vlan_ethertype = 0; 2260 u64 aq_required = 0; 2261 2262 /* keep cases separate because one ethertype for offloads can be 2263 * disabled at the same time as another is disabled, so check for an 2264 * enabled ethertype first, then check for disabled. Default to 2265 * ETH_P_8021Q so an ethertype is specified if disabling insertion and 2266 * stripping. 2267 */ 2268 if (features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2269 vlan_ethertype = ETH_P_8021AD; 2270 else if (features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2271 vlan_ethertype = ETH_P_8021Q; 2272 else if (prev_features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) 2273 vlan_ethertype = ETH_P_8021AD; 2274 else if (prev_features & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) 2275 vlan_ethertype = ETH_P_8021Q; 2276 else 2277 vlan_ethertype = ETH_P_8021Q; 2278 2279 if (!(features & (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_CTAG_RX))) 2280 enable_stripping = false; 2281 if (!(features & (NETIF_F_HW_VLAN_STAG_TX | NETIF_F_HW_VLAN_CTAG_TX))) 2282 enable_insertion = false; 2283 2284 if (VLAN_ALLOWED(adapter)) { 2285 /* VIRTCHNL_VF_OFFLOAD_VLAN only has support for toggling VLAN 2286 * stripping via virtchnl. VLAN insertion can be toggled on the 2287 * netdev, but it doesn't require a virtchnl message 2288 */ 2289 if (enable_stripping) 2290 aq_required |= IAVF_FLAG_AQ_ENABLE_VLAN_STRIPPING; 2291 else 2292 aq_required |= IAVF_FLAG_AQ_DISABLE_VLAN_STRIPPING; 2293 2294 } else if (VLAN_V2_ALLOWED(adapter)) { 2295 switch (vlan_ethertype) { 2296 case ETH_P_8021Q: 2297 if (enable_stripping) 2298 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_STRIPPING; 2299 else 2300 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_STRIPPING; 2301 2302 if (enable_insertion) 2303 aq_required |= IAVF_FLAG_AQ_ENABLE_CTAG_VLAN_INSERTION; 2304 else 2305 aq_required |= IAVF_FLAG_AQ_DISABLE_CTAG_VLAN_INSERTION; 2306 break; 2307 case ETH_P_8021AD: 2308 if (enable_stripping) 2309 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_STRIPPING; 2310 else 2311 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_STRIPPING; 2312 2313 if (enable_insertion) 2314 aq_required |= IAVF_FLAG_AQ_ENABLE_STAG_VLAN_INSERTION; 2315 else 2316 aq_required |= IAVF_FLAG_AQ_DISABLE_STAG_VLAN_INSERTION; 2317 break; 2318 } 2319 } 2320 2321 if (aq_required) 2322 iavf_schedule_aq_request(adapter, aq_required); 2323} 2324 2325/** 2326 * iavf_startup - first step of driver startup 2327 * @adapter: board private structure 2328 * 2329 * Function process __IAVF_STARTUP driver state. 2330 * When success the state is changed to __IAVF_INIT_VERSION_CHECK 2331 * when fails the state is changed to __IAVF_INIT_FAILED 2332 **/ 2333static void iavf_startup(struct iavf_adapter *adapter) 2334{ 2335 struct pci_dev *pdev = adapter->pdev; 2336 struct iavf_hw *hw = &adapter->hw; 2337 enum iavf_status status; 2338 int ret; 2339 2340 WARN_ON(adapter->state != __IAVF_STARTUP); 2341 2342 /* driver loaded, probe complete */ 2343 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2344 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 2345 2346 ret = iavf_check_reset_complete(hw); 2347 if (ret) { 2348 dev_info(&pdev->dev, "Device is still in reset (%d), retrying\n", 2349 ret); 2350 goto err; 2351 } 2352 hw->aq.num_arq_entries = IAVF_AQ_LEN; 2353 hw->aq.num_asq_entries = IAVF_AQ_LEN; 2354 hw->aq.arq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2355 hw->aq.asq_buf_size = IAVF_MAX_AQ_BUF_SIZE; 2356 2357 status = iavf_init_adminq(hw); 2358 if (status) { 2359 dev_err(&pdev->dev, "Failed to init Admin Queue (%d)\n", 2360 status); 2361 goto err; 2362 } 2363 ret = iavf_send_api_ver(adapter); 2364 if (ret) { 2365 dev_err(&pdev->dev, "Unable to send to PF (%d)\n", ret); 2366 iavf_shutdown_adminq(hw); 2367 goto err; 2368 } 2369 iavf_change_state(adapter, __IAVF_INIT_VERSION_CHECK); 2370 return; 2371err: 2372 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2373} 2374 2375/** 2376 * iavf_init_version_check - second step of driver startup 2377 * @adapter: board private structure 2378 * 2379 * Function process __IAVF_INIT_VERSION_CHECK driver state. 2380 * When success the state is changed to __IAVF_INIT_GET_RESOURCES 2381 * when fails the state is changed to __IAVF_INIT_FAILED 2382 **/ 2383static void iavf_init_version_check(struct iavf_adapter *adapter) 2384{ 2385 struct pci_dev *pdev = adapter->pdev; 2386 struct iavf_hw *hw = &adapter->hw; 2387 int err = -EAGAIN; 2388 2389 WARN_ON(adapter->state != __IAVF_INIT_VERSION_CHECK); 2390 2391 if (!iavf_asq_done(hw)) { 2392 dev_err(&pdev->dev, "Admin queue command never completed\n"); 2393 iavf_shutdown_adminq(hw); 2394 iavf_change_state(adapter, __IAVF_STARTUP); 2395 goto err; 2396 } 2397 2398 /* aq msg sent, awaiting reply */ 2399 err = iavf_verify_api_ver(adapter); 2400 if (err) { 2401 if (err == -EALREADY) 2402 err = iavf_send_api_ver(adapter); 2403 else 2404 dev_err(&pdev->dev, "Unsupported PF API version %d.%d, expected %d.%d\n", 2405 adapter->pf_version.major, 2406 adapter->pf_version.minor, 2407 VIRTCHNL_VERSION_MAJOR, 2408 VIRTCHNL_VERSION_MINOR); 2409 goto err; 2410 } 2411 err = iavf_send_vf_config_msg(adapter); 2412 if (err) { 2413 dev_err(&pdev->dev, "Unable to send config request (%d)\n", 2414 err); 2415 goto err; 2416 } 2417 iavf_change_state(adapter, __IAVF_INIT_GET_RESOURCES); 2418 return; 2419err: 2420 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2421} 2422 2423/** 2424 * iavf_parse_vf_resource_msg - parse response from VIRTCHNL_OP_GET_VF_RESOURCES 2425 * @adapter: board private structure 2426 */ 2427int iavf_parse_vf_resource_msg(struct iavf_adapter *adapter) 2428{ 2429 int i, num_req_queues = adapter->num_req_queues; 2430 struct iavf_vsi *vsi = &adapter->vsi; 2431 2432 for (i = 0; i < adapter->vf_res->num_vsis; i++) { 2433 if (adapter->vf_res->vsi_res[i].vsi_type == VIRTCHNL_VSI_SRIOV) 2434 adapter->vsi_res = &adapter->vf_res->vsi_res[i]; 2435 } 2436 if (!adapter->vsi_res) { 2437 dev_err(&adapter->pdev->dev, "No LAN VSI found\n"); 2438 return -ENODEV; 2439 } 2440 2441 if (num_req_queues && 2442 num_req_queues > adapter->vsi_res->num_queue_pairs) { 2443 /* Problem. The PF gave us fewer queues than what we had 2444 * negotiated in our request. Need a reset to see if we can't 2445 * get back to a working state. 2446 */ 2447 dev_err(&adapter->pdev->dev, 2448 "Requested %d queues, but PF only gave us %d.\n", 2449 num_req_queues, 2450 adapter->vsi_res->num_queue_pairs); 2451 adapter->flags |= IAVF_FLAG_REINIT_MSIX_NEEDED; 2452 adapter->num_req_queues = adapter->vsi_res->num_queue_pairs; 2453 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 2454 2455 return -EAGAIN; 2456 } 2457 adapter->num_req_queues = 0; 2458 adapter->vsi.id = adapter->vsi_res->vsi_id; 2459 2460 adapter->vsi.back = adapter; 2461 adapter->vsi.base_vector = 1; 2462 vsi->netdev = adapter->netdev; 2463 vsi->qs_handle = adapter->vsi_res->qset_handle; 2464 if (adapter->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_RSS_PF) { 2465 adapter->rss_key_size = adapter->vf_res->rss_key_size; 2466 adapter->rss_lut_size = adapter->vf_res->rss_lut_size; 2467 } else { 2468 adapter->rss_key_size = IAVF_HKEY_ARRAY_SIZE; 2469 adapter->rss_lut_size = IAVF_HLUT_ARRAY_SIZE; 2470 } 2471 2472 return 0; 2473} 2474 2475/** 2476 * iavf_init_get_resources - third step of driver startup 2477 * @adapter: board private structure 2478 * 2479 * Function process __IAVF_INIT_GET_RESOURCES driver state and 2480 * finishes driver initialization procedure. 2481 * When success the state is changed to __IAVF_DOWN 2482 * when fails the state is changed to __IAVF_INIT_FAILED 2483 **/ 2484static void iavf_init_get_resources(struct iavf_adapter *adapter) 2485{ 2486 struct pci_dev *pdev = adapter->pdev; 2487 struct iavf_hw *hw = &adapter->hw; 2488 int err; 2489 2490 WARN_ON(adapter->state != __IAVF_INIT_GET_RESOURCES); 2491 /* aq msg sent, awaiting reply */ 2492 if (!adapter->vf_res) { 2493 adapter->vf_res = kzalloc(IAVF_VIRTCHNL_VF_RESOURCE_SIZE, 2494 GFP_KERNEL); 2495 if (!adapter->vf_res) { 2496 err = -ENOMEM; 2497 goto err; 2498 } 2499 } 2500 err = iavf_get_vf_config(adapter); 2501 if (err == -EALREADY) { 2502 err = iavf_send_vf_config_msg(adapter); 2503 goto err; 2504 } else if (err == -EINVAL) { 2505 /* We only get -EINVAL if the device is in a very bad 2506 * state or if we've been disabled for previous bad 2507 * behavior. Either way, we're done now. 2508 */ 2509 iavf_shutdown_adminq(hw); 2510 dev_err(&pdev->dev, "Unable to get VF config due to PF error condition, not retrying\n"); 2511 return; 2512 } 2513 if (err) { 2514 dev_err(&pdev->dev, "Unable to get VF config (%d)\n", err); 2515 goto err_alloc; 2516 } 2517 2518 err = iavf_parse_vf_resource_msg(adapter); 2519 if (err) { 2520 dev_err(&pdev->dev, "Failed to parse VF resource message from PF (%d)\n", 2521 err); 2522 goto err_alloc; 2523 } 2524 /* Some features require additional messages to negotiate extended 2525 * capabilities. These are processed in sequence by the 2526 * __IAVF_INIT_EXTENDED_CAPS driver state. 2527 */ 2528 adapter->extended_caps = IAVF_EXTENDED_CAPS; 2529 2530 iavf_change_state(adapter, __IAVF_INIT_EXTENDED_CAPS); 2531 return; 2532 2533err_alloc: 2534 kfree(adapter->vf_res); 2535 adapter->vf_res = NULL; 2536err: 2537 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2538} 2539 2540/** 2541 * iavf_init_send_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2542 * @adapter: board private structure 2543 * 2544 * Function processes send of the extended VLAN V2 capability message to the 2545 * PF. Must clear IAVF_EXTENDED_CAP_RECV_VLAN_V2 if the message is not sent, 2546 * e.g. due to PF not negotiating VIRTCHNL_VF_OFFLOAD_VLAN_V2. 2547 */ 2548static void iavf_init_send_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2549{ 2550 int ret; 2551 2552 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2)); 2553 2554 ret = iavf_send_vf_offload_vlan_v2_msg(adapter); 2555 if (ret && ret == -EOPNOTSUPP) { 2556 /* PF does not support VIRTCHNL_VF_OFFLOAD_V2. In this case, 2557 * we did not send the capability exchange message and do not 2558 * expect a response. 2559 */ 2560 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2561 } 2562 2563 /* We sent the message, so move on to the next step */ 2564 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2565} 2566 2567/** 2568 * iavf_init_recv_offload_vlan_v2_caps - part of initializing VLAN V2 caps 2569 * @adapter: board private structure 2570 * 2571 * Function processes receipt of the extended VLAN V2 capability message from 2572 * the PF. 2573 **/ 2574static void iavf_init_recv_offload_vlan_v2_caps(struct iavf_adapter *adapter) 2575{ 2576 int ret; 2577 2578 WARN_ON(!(adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2)); 2579 2580 memset(&adapter->vlan_v2_caps, 0, sizeof(adapter->vlan_v2_caps)); 2581 2582 ret = iavf_get_vf_vlan_v2_caps(adapter); 2583 if (ret) 2584 goto err; 2585 2586 /* We've processed receipt of the VLAN V2 caps message */ 2587 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_VLAN_V2; 2588 return; 2589err: 2590 /* We didn't receive a reply. Make sure we try sending again when 2591 * __IAVF_INIT_FAILED attempts to recover. 2592 */ 2593 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_VLAN_V2; 2594 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2595} 2596 2597/** 2598 * iavf_init_send_supported_rxdids - part of querying for supported RXDID 2599 * formats 2600 * @adapter: board private structure 2601 * 2602 * Function processes send of the request for supported RXDIDs to the PF. 2603 * Must clear IAVF_EXTENDED_CAP_RECV_RXDID if the message is not sent, e.g. 2604 * due to the PF not negotiating VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. 2605 */ 2606static void iavf_init_send_supported_rxdids(struct iavf_adapter *adapter) 2607{ 2608 int ret; 2609 2610 ret = iavf_send_vf_supported_rxdids_msg(adapter); 2611 if (ret == -EOPNOTSUPP) { 2612 /* PF does not support VIRTCHNL_VF_OFFLOAD_RX_FLEX_DESC. In this 2613 * case, we did not send the capability exchange message and 2614 * do not expect a response. 2615 */ 2616 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; 2617 } 2618 2619 /* We sent the message, so move on to the next step */ 2620 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_RXDID; 2621} 2622 2623/** 2624 * iavf_init_recv_supported_rxdids - part of querying for supported RXDID 2625 * formats 2626 * @adapter: board private structure 2627 * 2628 * Function processes receipt of the supported RXDIDs message from the PF. 2629 **/ 2630static void iavf_init_recv_supported_rxdids(struct iavf_adapter *adapter) 2631{ 2632 int ret; 2633 2634 memset(&adapter->supp_rxdids, 0, sizeof(adapter->supp_rxdids)); 2635 2636 ret = iavf_get_vf_supported_rxdids(adapter); 2637 if (ret) 2638 goto err; 2639 2640 /* We've processed the PF response to the 2641 * VIRTCHNL_OP_GET_SUPPORTED_RXDIDS message we sent previously. 2642 */ 2643 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_RXDID; 2644 return; 2645 2646err: 2647 /* We didn't receive a reply. Make sure we try sending again when 2648 * __IAVF_INIT_FAILED attempts to recover. 2649 */ 2650 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_RXDID; 2651 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2652} 2653 2654/** 2655 * iavf_init_send_ptp_caps - part of querying for extended PTP capabilities 2656 * @adapter: board private structure 2657 * 2658 * Function processes send of the request for 1588 PTP capabilities to the PF. 2659 * Must clear IAVF_EXTENDED_CAP_SEND_PTP if the message is not sent, e.g. 2660 * due to the PF not negotiating VIRTCHNL_VF_PTP_CAP 2661 */ 2662static void iavf_init_send_ptp_caps(struct iavf_adapter *adapter) 2663{ 2664 if (iavf_send_vf_ptp_caps_msg(adapter) == -EOPNOTSUPP) { 2665 /* PF does not support VIRTCHNL_VF_PTP_CAP. In this case, we 2666 * did not send the capability exchange message and do not 2667 * expect a response. 2668 */ 2669 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; 2670 } 2671 2672 /* We sent the message, so move on to the next step */ 2673 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_SEND_PTP; 2674} 2675 2676/** 2677 * iavf_init_recv_ptp_caps - part of querying for supported PTP capabilities 2678 * @adapter: board private structure 2679 * 2680 * Function processes receipt of the PTP capabilities supported on this VF. 2681 **/ 2682static void iavf_init_recv_ptp_caps(struct iavf_adapter *adapter) 2683{ 2684 memset(&adapter->ptp.hw_caps, 0, sizeof(adapter->ptp.hw_caps)); 2685 2686 if (iavf_get_vf_ptp_caps(adapter)) 2687 goto err; 2688 2689 /* We've processed the PF response to the VIRTCHNL_OP_1588_PTP_GET_CAPS 2690 * message we sent previously. 2691 */ 2692 adapter->extended_caps &= ~IAVF_EXTENDED_CAP_RECV_PTP; 2693 return; 2694 2695err: 2696 /* We didn't receive a reply. Make sure we try sending again when 2697 * __IAVF_INIT_FAILED attempts to recover. 2698 */ 2699 adapter->extended_caps |= IAVF_EXTENDED_CAP_SEND_PTP; 2700 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2701} 2702 2703/** 2704 * iavf_init_process_extended_caps - Part of driver startup 2705 * @adapter: board private structure 2706 * 2707 * Function processes __IAVF_INIT_EXTENDED_CAPS driver state. This state 2708 * handles negotiating capabilities for features which require an additional 2709 * message. 2710 * 2711 * Once all extended capabilities exchanges are finished, the driver will 2712 * transition into __IAVF_INIT_CONFIG_ADAPTER. 2713 */ 2714static void iavf_init_process_extended_caps(struct iavf_adapter *adapter) 2715{ 2716 WARN_ON(adapter->state != __IAVF_INIT_EXTENDED_CAPS); 2717 2718 /* Process capability exchange for VLAN V2 */ 2719 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_VLAN_V2) { 2720 iavf_init_send_offload_vlan_v2_caps(adapter); 2721 return; 2722 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_VLAN_V2) { 2723 iavf_init_recv_offload_vlan_v2_caps(adapter); 2724 return; 2725 } 2726 2727 /* Process capability exchange for RXDID formats */ 2728 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_RXDID) { 2729 iavf_init_send_supported_rxdids(adapter); 2730 return; 2731 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_RXDID) { 2732 iavf_init_recv_supported_rxdids(adapter); 2733 return; 2734 } 2735 2736 /* Process capability exchange for PTP features */ 2737 if (adapter->extended_caps & IAVF_EXTENDED_CAP_SEND_PTP) { 2738 iavf_init_send_ptp_caps(adapter); 2739 return; 2740 } else if (adapter->extended_caps & IAVF_EXTENDED_CAP_RECV_PTP) { 2741 iavf_init_recv_ptp_caps(adapter); 2742 return; 2743 } 2744 2745 /* When we reach here, no further extended capabilities exchanges are 2746 * necessary, so we finally transition into __IAVF_INIT_CONFIG_ADAPTER 2747 */ 2748 iavf_change_state(adapter, __IAVF_INIT_CONFIG_ADAPTER); 2749} 2750 2751/** 2752 * iavf_init_config_adapter - last part of driver startup 2753 * @adapter: board private structure 2754 * 2755 * After all the supported capabilities are negotiated, then the 2756 * __IAVF_INIT_CONFIG_ADAPTER state will finish driver initialization. 2757 */ 2758static void iavf_init_config_adapter(struct iavf_adapter *adapter) 2759{ 2760 struct net_device *netdev = adapter->netdev; 2761 struct pci_dev *pdev = adapter->pdev; 2762 int err; 2763 2764 WARN_ON(adapter->state != __IAVF_INIT_CONFIG_ADAPTER); 2765 2766 if (iavf_process_config(adapter)) 2767 goto err; 2768 2769 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2770 2771 adapter->flags |= IAVF_FLAG_RX_CSUM_ENABLED; 2772 2773 netdev->netdev_ops = &iavf_netdev_ops; 2774 iavf_set_ethtool_ops(netdev); 2775 netdev->watchdog_timeo = 5 * HZ; 2776 2777 netdev->min_mtu = ETH_MIN_MTU; 2778 2779 /* PF/VF API: vf_res->max_mtu is max frame size (not MTU). 2780 * Convert to MTU. 2781 */ 2782 if (!adapter->vf_res->max_mtu) { 2783 netdev->max_mtu = LIBIE_MAX_MTU; 2784 } else if (adapter->vf_res->max_mtu < LIBETH_RX_LL_LEN + ETH_MIN_MTU || 2785 adapter->vf_res->max_mtu > 2786 LIBETH_RX_LL_LEN + LIBIE_MAX_MTU) { 2787 netdev_warn_once(adapter->netdev, 2788 "invalid max frame size %d from PF, using default MTU %d", 2789 adapter->vf_res->max_mtu, LIBIE_MAX_MTU); 2790 netdev->max_mtu = LIBIE_MAX_MTU; 2791 } else { 2792 netdev->max_mtu = adapter->vf_res->max_mtu - LIBETH_RX_LL_LEN; 2793 } 2794 2795 if (!is_valid_ether_addr(adapter->hw.mac.addr)) { 2796 dev_info(&pdev->dev, "Invalid MAC address %pM, using random\n", 2797 adapter->hw.mac.addr); 2798 eth_hw_addr_random(netdev); 2799 ether_addr_copy(adapter->hw.mac.addr, netdev->dev_addr); 2800 } else { 2801 eth_hw_addr_set(netdev, adapter->hw.mac.addr); 2802 ether_addr_copy(netdev->perm_addr, adapter->hw.mac.addr); 2803 } 2804 2805 adapter->tx_desc_count = IAVF_DEFAULT_TXD; 2806 adapter->rx_desc_count = IAVF_DEFAULT_RXD; 2807 err = iavf_init_interrupt_scheme(adapter); 2808 if (err) 2809 goto err_sw_init; 2810 iavf_map_rings_to_vectors(adapter); 2811 if (adapter->vf_res->vf_cap_flags & 2812 VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) 2813 adapter->flags |= IAVF_FLAG_WB_ON_ITR_CAPABLE; 2814 2815 err = iavf_request_misc_irq(adapter); 2816 if (err) 2817 goto err_sw_init; 2818 2819 netif_carrier_off(netdev); 2820 adapter->link_up = false; 2821 netif_tx_stop_all_queues(netdev); 2822 2823 dev_info(&pdev->dev, "MAC address: %pM\n", adapter->hw.mac.addr); 2824 if (netdev->features & NETIF_F_GRO) 2825 dev_info(&pdev->dev, "GRO is enabled\n"); 2826 2827 iavf_change_state(adapter, __IAVF_DOWN); 2828 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 2829 2830 iavf_misc_irq_enable(adapter); 2831 wake_up(&adapter->down_waitqueue); 2832 2833 adapter->rss_key = kzalloc(adapter->rss_key_size, GFP_KERNEL); 2834 adapter->rss_lut = kzalloc(adapter->rss_lut_size, GFP_KERNEL); 2835 if (!adapter->rss_key || !adapter->rss_lut) { 2836 err = -ENOMEM; 2837 goto err_mem; 2838 } 2839 if (RSS_AQ(adapter)) 2840 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 2841 else 2842 iavf_init_rss(adapter); 2843 2844 if (VLAN_V2_ALLOWED(adapter)) 2845 /* request initial VLAN offload settings */ 2846 iavf_set_vlan_offload_features(adapter, 0, netdev->features); 2847 2848 if (QOS_ALLOWED(adapter)) 2849 adapter->aq_required |= IAVF_FLAG_AQ_GET_QOS_CAPS; 2850 2851 /* Setup initial PTP configuration */ 2852 iavf_ptp_init(adapter); 2853 2854 iavf_schedule_finish_config(adapter); 2855 return; 2856 2857err_mem: 2858 iavf_free_rss(adapter); 2859 iavf_free_misc_irq(adapter); 2860err_sw_init: 2861 iavf_reset_interrupt_capability(adapter); 2862err: 2863 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2864} 2865 2866static const int IAVF_NO_RESCHED = -1; 2867 2868/* return: msec delay for requeueing itself */ 2869static int iavf_watchdog_step(struct iavf_adapter *adapter) 2870{ 2871 struct iavf_hw *hw = &adapter->hw; 2872 u32 reg_val; 2873 2874 netdev_assert_locked(adapter->netdev); 2875 2876 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 2877 iavf_change_state(adapter, __IAVF_COMM_FAILED); 2878 2879 switch (adapter->state) { 2880 case __IAVF_STARTUP: 2881 iavf_startup(adapter); 2882 return 30; 2883 case __IAVF_INIT_VERSION_CHECK: 2884 iavf_init_version_check(adapter); 2885 return 30; 2886 case __IAVF_INIT_GET_RESOURCES: 2887 iavf_init_get_resources(adapter); 2888 return 1; 2889 case __IAVF_INIT_EXTENDED_CAPS: 2890 iavf_init_process_extended_caps(adapter); 2891 return 1; 2892 case __IAVF_INIT_CONFIG_ADAPTER: 2893 iavf_init_config_adapter(adapter); 2894 return 1; 2895 case __IAVF_INIT_FAILED: 2896 if (test_bit(__IAVF_IN_REMOVE_TASK, 2897 &adapter->crit_section)) { 2898 /* Do not update the state and do not reschedule 2899 * watchdog task, iavf_remove should handle this state 2900 * as it can loop forever 2901 */ 2902 return IAVF_NO_RESCHED; 2903 } 2904 if (++adapter->aq_wait_count > IAVF_AQ_MAX_ERR) { 2905 dev_err(&adapter->pdev->dev, 2906 "Failed to communicate with PF; waiting before retry\n"); 2907 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 2908 iavf_shutdown_adminq(hw); 2909 return 5000; 2910 } 2911 /* Try again from failed step*/ 2912 iavf_change_state(adapter, adapter->last_state); 2913 return 1000; 2914 case __IAVF_COMM_FAILED: 2915 if (test_bit(__IAVF_IN_REMOVE_TASK, 2916 &adapter->crit_section)) { 2917 /* Set state to __IAVF_INIT_FAILED and perform remove 2918 * steps. Remove IAVF_FLAG_PF_COMMS_FAILED so the task 2919 * doesn't bring the state back to __IAVF_COMM_FAILED. 2920 */ 2921 iavf_change_state(adapter, __IAVF_INIT_FAILED); 2922 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2923 return IAVF_NO_RESCHED; 2924 } 2925 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 2926 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 2927 if (reg_val == VIRTCHNL_VFR_VFACTIVE || 2928 reg_val == VIRTCHNL_VFR_COMPLETED) { 2929 /* A chance for redemption! */ 2930 dev_err(&adapter->pdev->dev, 2931 "Hardware came out of reset. Attempting reinit.\n"); 2932 /* When init task contacts the PF and 2933 * gets everything set up again, it'll restart the 2934 * watchdog for us. Down, boy. Sit. Stay. Woof. 2935 */ 2936 iavf_change_state(adapter, __IAVF_STARTUP); 2937 adapter->flags &= ~IAVF_FLAG_PF_COMMS_FAILED; 2938 } 2939 adapter->aq_required = 0; 2940 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2941 return 10; 2942 case __IAVF_RESETTING: 2943 return 2000; 2944 case __IAVF_DOWN: 2945 case __IAVF_DOWN_PENDING: 2946 case __IAVF_TESTING: 2947 case __IAVF_RUNNING: 2948 if (adapter->current_op) { 2949 if (!iavf_asq_done(hw)) { 2950 dev_dbg(&adapter->pdev->dev, 2951 "Admin queue timeout\n"); 2952 iavf_send_api_ver(adapter); 2953 } 2954 } else { 2955 int ret = iavf_process_aq_command(adapter); 2956 2957 /* An error will be returned if no commands were 2958 * processed; use this opportunity to update stats 2959 * if the error isn't -ENOTSUPP 2960 */ 2961 if (ret && ret != -EOPNOTSUPP && 2962 adapter->state == __IAVF_RUNNING) 2963 iavf_request_stats(adapter); 2964 } 2965 if (adapter->state == __IAVF_RUNNING) 2966 iavf_detect_recover_hung(&adapter->vsi); 2967 break; 2968 case __IAVF_REMOVE: 2969 default: 2970 return IAVF_NO_RESCHED; 2971 } 2972 2973 /* check for hw reset */ 2974 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & IAVF_VF_ARQLEN1_ARQENABLE_MASK; 2975 if (!reg_val) { 2976 adapter->aq_required = 0; 2977 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 2978 dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); 2979 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_PENDING); 2980 } 2981 2982 return adapter->aq_required ? 20 : 2000; 2983} 2984 2985static void iavf_watchdog_task(struct work_struct *work) 2986{ 2987 struct iavf_adapter *adapter = container_of(work, 2988 struct iavf_adapter, 2989 watchdog_task.work); 2990 struct net_device *netdev = adapter->netdev; 2991 int msec_delay; 2992 2993 netdev_lock(netdev); 2994 msec_delay = iavf_watchdog_step(adapter); 2995 /* note that we schedule a different task */ 2996 if (adapter->state >= __IAVF_DOWN) 2997 queue_work(adapter->wq, &adapter->adminq_task); 2998 2999 if (msec_delay != IAVF_NO_RESCHED) 3000 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 3001 msecs_to_jiffies(msec_delay)); 3002 netdev_unlock(netdev); 3003} 3004 3005/** 3006 * iavf_disable_vf - disable VF 3007 * @adapter: board private structure 3008 * 3009 * Set communication failed flag and free all resources. 3010 */ 3011static void iavf_disable_vf(struct iavf_adapter *adapter) 3012{ 3013 struct iavf_mac_filter *f, *ftmp; 3014 struct iavf_vlan_filter *fv, *fvtmp; 3015 struct iavf_cloud_filter *cf, *cftmp; 3016 3017 netdev_assert_locked(adapter->netdev); 3018 3019 adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED; 3020 3021 iavf_ptp_release(adapter); 3022 3023 /* We don't use netif_running() because it may be true prior to 3024 * ndo_open() returning, so we can't assume it means all our open 3025 * tasks have finished, since we're not holding the rtnl_lock here. 3026 */ 3027 if (adapter->state == __IAVF_RUNNING) { 3028 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3029 netif_carrier_off(adapter->netdev); 3030 netif_tx_disable(adapter->netdev); 3031 adapter->link_up = false; 3032 iavf_napi_disable_all(adapter); 3033 iavf_irq_disable(adapter); 3034 iavf_free_traffic_irqs(adapter); 3035 iavf_free_all_tx_resources(adapter); 3036 iavf_free_all_rx_resources(adapter); 3037 } 3038 3039 spin_lock_bh(&adapter->mac_vlan_list_lock); 3040 3041 /* Delete all of the filters */ 3042 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3043 list_del(&f->list); 3044 kfree(f); 3045 } 3046 3047 list_for_each_entry_safe(fv, fvtmp, &adapter->vlan_filter_list, list) { 3048 list_del(&fv->list); 3049 kfree(fv); 3050 } 3051 adapter->num_vlan_filters = 0; 3052 3053 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3054 3055 spin_lock_bh(&adapter->cloud_filter_list_lock); 3056 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 3057 list_del(&cf->list); 3058 kfree(cf); 3059 adapter->num_cloud_filters--; 3060 } 3061 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3062 3063 iavf_free_misc_irq(adapter); 3064 iavf_free_interrupt_scheme(adapter); 3065 memset(adapter->vf_res, 0, IAVF_VIRTCHNL_VF_RESOURCE_SIZE); 3066 iavf_shutdown_adminq(&adapter->hw); 3067 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 3068 iavf_change_state(adapter, __IAVF_DOWN); 3069 wake_up(&adapter->down_waitqueue); 3070 dev_info(&adapter->pdev->dev, "Reset task did not complete, VF disabled\n"); 3071} 3072 3073/** 3074 * iavf_reconfig_qs_bw - Call-back task to handle hardware reset 3075 * @adapter: board private structure 3076 * 3077 * After a reset, the shaper parameters of queues need to be replayed again. 3078 * Since the net_shaper object inside TX rings persists across reset, 3079 * set the update flag for all queues so that the virtchnl message is triggered 3080 * for all queues. 3081 **/ 3082static void iavf_reconfig_qs_bw(struct iavf_adapter *adapter) 3083{ 3084 int i, num = 0; 3085 3086 for (i = 0; i < adapter->num_active_queues; i++) 3087 if (adapter->tx_rings[i].q_shaper.bw_min || 3088 adapter->tx_rings[i].q_shaper.bw_max) { 3089 adapter->tx_rings[i].q_shaper_update = true; 3090 num++; 3091 } 3092 3093 if (num) 3094 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 3095} 3096 3097/** 3098 * iavf_reset_step - Perform the VF reset sequence 3099 * @adapter: board private structure 3100 * 3101 * Requests a reset from PF, polls for completion, and reconfigures 3102 * the driver. Caller must hold the netdev instance lock. 3103 * 3104 * This can sleep for several seconds while polling HW registers. 3105 */ 3106void iavf_reset_step(struct iavf_adapter *adapter) 3107{ 3108 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3109 struct net_device *netdev = adapter->netdev; 3110 struct iavf_hw *hw = &adapter->hw; 3111 struct iavf_mac_filter *f, *ftmp; 3112 struct iavf_cloud_filter *cf; 3113 enum iavf_status status; 3114 u32 reg_val; 3115 int i = 0, err; 3116 bool running; 3117 3118 netdev_assert_locked(netdev); 3119 3120 iavf_misc_irq_disable(adapter); 3121 if (adapter->flags & IAVF_FLAG_RESET_NEEDED) { 3122 adapter->flags &= ~IAVF_FLAG_RESET_NEEDED; 3123 /* Restart the AQ here. If we have been reset but didn't 3124 * detect it, or if the PF had to reinit, our AQ will be hosed. 3125 */ 3126 iavf_shutdown_adminq(hw); 3127 iavf_init_adminq(hw); 3128 iavf_request_reset(adapter); 3129 } 3130 adapter->flags |= IAVF_FLAG_RESET_PENDING; 3131 3132 /* poll until we see the reset actually happen */ 3133 for (i = 0; i < IAVF_RESET_WAIT_DETECTED_COUNT; i++) { 3134 reg_val = rd32(hw, IAVF_VF_ARQLEN1) & 3135 IAVF_VF_ARQLEN1_ARQENABLE_MASK; 3136 if (!reg_val) 3137 break; 3138 usleep_range(5000, 10000); 3139 } 3140 if (i == IAVF_RESET_WAIT_DETECTED_COUNT) { 3141 dev_info(&adapter->pdev->dev, "Never saw reset\n"); 3142 goto continue_reset; /* act like the reset happened */ 3143 } 3144 3145 /* wait until the reset is complete and the PF is responding to us */ 3146 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 3147 /* sleep first to make sure a minimum wait time is met */ 3148 msleep(IAVF_RESET_WAIT_MS); 3149 3150 reg_val = rd32(hw, IAVF_VFGEN_RSTAT) & 3151 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 3152 if (reg_val == VIRTCHNL_VFR_VFACTIVE) 3153 break; 3154 } 3155 3156 pci_set_master(adapter->pdev); 3157 pci_restore_msi_state(adapter->pdev); 3158 3159 if (i == IAVF_RESET_WAIT_COMPLETE_COUNT) { 3160 dev_err(&adapter->pdev->dev, "Reset never finished (%x)\n", 3161 reg_val); 3162 iavf_disable_vf(adapter); 3163 return; /* Do not attempt to reinit. It's dead, Jim. */ 3164 } 3165 3166continue_reset: 3167 /* If we are still early in the state machine, just restart. */ 3168 if (adapter->state <= __IAVF_INIT_FAILED) { 3169 iavf_shutdown_adminq(hw); 3170 iavf_change_state(adapter, __IAVF_STARTUP); 3171 iavf_startup(adapter); 3172 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 3173 msecs_to_jiffies(30)); 3174 return; 3175 } 3176 3177 /* We don't use netif_running() because it may be true prior to 3178 * ndo_open() returning, so we can't assume it means all our open 3179 * tasks have finished, since we're not holding the rtnl_lock here. 3180 */ 3181 running = adapter->state == __IAVF_RUNNING; 3182 3183 if (running) { 3184 netif_carrier_off(netdev); 3185 netif_tx_stop_all_queues(netdev); 3186 adapter->link_up = false; 3187 iavf_napi_disable_all(adapter); 3188 } 3189 iavf_irq_disable(adapter); 3190 3191 iavf_change_state(adapter, __IAVF_RESETTING); 3192 adapter->flags &= ~IAVF_FLAG_RESET_PENDING; 3193 3194 iavf_ptp_release(adapter); 3195 3196 /* free the Tx/Rx rings and descriptors, might be better to just 3197 * re-use them sometime in the future 3198 */ 3199 iavf_free_all_rx_resources(adapter); 3200 iavf_free_all_tx_resources(adapter); 3201 3202 adapter->flags |= IAVF_FLAG_QUEUES_DISABLED; 3203 /* kill and reinit the admin queue */ 3204 iavf_shutdown_adminq(hw); 3205 adapter->current_op = VIRTCHNL_OP_UNKNOWN; 3206 status = iavf_init_adminq(hw); 3207 if (status) { 3208 dev_info(&adapter->pdev->dev, "Failed to init adminq: %d\n", 3209 status); 3210 goto reset_err; 3211 } 3212 adapter->aq_required = 0; 3213 3214 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3215 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3216 err = iavf_reinit_interrupt_scheme(adapter, running); 3217 if (err) 3218 goto reset_err; 3219 } 3220 3221 if (RSS_AQ(adapter)) { 3222 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_RSS; 3223 } else { 3224 err = iavf_init_rss(adapter); 3225 if (err) 3226 goto reset_err; 3227 } 3228 3229 adapter->aq_required |= IAVF_FLAG_AQ_GET_CONFIG; 3230 adapter->aq_required |= IAVF_FLAG_AQ_MAP_VECTORS; 3231 3232 /* Certain capabilities require an extended negotiation process using 3233 * extra messages that must be processed after getting the VF 3234 * configuration. The related checks such as VLAN_V2_ALLOWED() are not 3235 * reliable here, since the configuration has not yet been negotiated. 3236 * 3237 * Always set these flags, since them related VIRTCHNL messages won't 3238 * be sent until after VIRTCHNL_OP_GET_VF_RESOURCES. 3239 */ 3240 adapter->aq_required |= IAVF_FLAG_AQ_EXTENDED_CAPS; 3241 3242 spin_lock_bh(&adapter->mac_vlan_list_lock); 3243 3244 /* Delete filter for the current MAC address, it could have 3245 * been changed by the PF via administratively set MAC. 3246 * Will be re-added via VIRTCHNL_OP_GET_VF_RESOURCES. 3247 */ 3248 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 3249 if (ether_addr_equal(f->macaddr, adapter->hw.mac.addr)) { 3250 list_del(&f->list); 3251 kfree(f); 3252 } 3253 } 3254 /* re-add all MAC filters */ 3255 list_for_each_entry(f, &adapter->mac_filter_list, list) { 3256 f->add = true; 3257 } 3258 spin_unlock_bh(&adapter->mac_vlan_list_lock); 3259 3260 /* check if TCs are running and re-add all cloud filters */ 3261 spin_lock_bh(&adapter->cloud_filter_list_lock); 3262 if ((vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ) && 3263 adapter->num_tc) { 3264 list_for_each_entry(cf, &adapter->cloud_filter_list, list) { 3265 cf->add = true; 3266 } 3267 } 3268 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3269 3270 adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER; 3271 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 3272 iavf_misc_irq_enable(adapter); 3273 3274 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 2); 3275 3276 /* We were running when the reset started, so we need to restore some 3277 * state here. 3278 */ 3279 if (running) { 3280 /* allocate transmit descriptors */ 3281 err = iavf_setup_all_tx_resources(adapter); 3282 if (err) 3283 goto reset_err; 3284 3285 /* allocate receive descriptors */ 3286 err = iavf_setup_all_rx_resources(adapter); 3287 if (err) 3288 goto reset_err; 3289 3290 if ((adapter->flags & IAVF_FLAG_REINIT_MSIX_NEEDED) || 3291 (adapter->flags & IAVF_FLAG_REINIT_ITR_NEEDED)) { 3292 err = iavf_request_traffic_irqs(adapter, netdev->name); 3293 if (err) 3294 goto reset_err; 3295 3296 adapter->flags &= ~IAVF_FLAG_REINIT_MSIX_NEEDED; 3297 } 3298 3299 iavf_configure(adapter); 3300 3301 /* iavf_up_complete() will switch device back 3302 * to __IAVF_RUNNING 3303 */ 3304 iavf_up_complete(adapter); 3305 3306 iavf_irq_enable(adapter, true); 3307 3308 iavf_reconfig_qs_bw(adapter); 3309 } else { 3310 iavf_change_state(adapter, __IAVF_DOWN); 3311 wake_up(&adapter->down_waitqueue); 3312 } 3313 3314 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 3315 3316 return; 3317reset_err: 3318 if (running) { 3319 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 3320 iavf_free_traffic_irqs(adapter); 3321 } 3322 iavf_disable_vf(adapter); 3323 3324 dev_err(&adapter->pdev->dev, "failed to allocate resources during reinit\n"); 3325} 3326 3327static void iavf_reset_task(struct work_struct *work) 3328{ 3329 struct iavf_adapter *adapter = container_of(work, 3330 struct iavf_adapter, 3331 reset_task); 3332 struct net_device *netdev = adapter->netdev; 3333 3334 netdev_lock(netdev); 3335 iavf_reset_step(adapter); 3336 netdev_unlock(netdev); 3337} 3338 3339/** 3340 * iavf_adminq_task - worker thread to clean the admin queue 3341 * @work: pointer to work_struct containing our data 3342 **/ 3343static void iavf_adminq_task(struct work_struct *work) 3344{ 3345 struct iavf_adapter *adapter = 3346 container_of(work, struct iavf_adapter, adminq_task); 3347 struct net_device *netdev = adapter->netdev; 3348 struct iavf_hw *hw = &adapter->hw; 3349 struct iavf_arq_event_info event; 3350 enum virtchnl_ops v_op; 3351 enum iavf_status ret, v_ret; 3352 u32 val, oldval; 3353 u16 pending; 3354 3355 netdev_lock(netdev); 3356 3357 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) 3358 goto unlock; 3359 3360 event.buf_len = IAVF_MAX_AQ_BUF_SIZE; 3361 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3362 if (!event.msg_buf) 3363 goto unlock; 3364 3365 do { 3366 ret = iavf_clean_arq_element(hw, &event, &pending); 3367 v_op = (enum virtchnl_ops)le32_to_cpu(event.desc.cookie_high); 3368 v_ret = (enum iavf_status)le32_to_cpu(event.desc.cookie_low); 3369 3370 if (ret || !v_op) 3371 break; /* No event to process or error cleaning ARQ */ 3372 3373 iavf_virtchnl_completion(adapter, v_op, v_ret, event.msg_buf, 3374 event.msg_len); 3375 if (pending != 0) 3376 memset(event.msg_buf, 0, IAVF_MAX_AQ_BUF_SIZE); 3377 } while (pending); 3378 3379 if (iavf_is_reset_in_progress(adapter)) 3380 goto freedom; 3381 3382 /* check for error indications */ 3383 val = rd32(hw, IAVF_VF_ARQLEN1); 3384 if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */ 3385 goto freedom; 3386 oldval = val; 3387 if (val & IAVF_VF_ARQLEN1_ARQVFE_MASK) { 3388 dev_info(&adapter->pdev->dev, "ARQ VF Error detected\n"); 3389 val &= ~IAVF_VF_ARQLEN1_ARQVFE_MASK; 3390 } 3391 if (val & IAVF_VF_ARQLEN1_ARQOVFL_MASK) { 3392 dev_info(&adapter->pdev->dev, "ARQ Overflow Error detected\n"); 3393 val &= ~IAVF_VF_ARQLEN1_ARQOVFL_MASK; 3394 } 3395 if (val & IAVF_VF_ARQLEN1_ARQCRIT_MASK) { 3396 dev_info(&adapter->pdev->dev, "ARQ Critical Error detected\n"); 3397 val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK; 3398 } 3399 if (oldval != val) 3400 wr32(hw, IAVF_VF_ARQLEN1, val); 3401 3402 val = rd32(hw, IAVF_VF_ATQLEN1); 3403 oldval = val; 3404 if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) { 3405 dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n"); 3406 val &= ~IAVF_VF_ATQLEN1_ATQVFE_MASK; 3407 } 3408 if (val & IAVF_VF_ATQLEN1_ATQOVFL_MASK) { 3409 dev_info(&adapter->pdev->dev, "ASQ Overflow Error detected\n"); 3410 val &= ~IAVF_VF_ATQLEN1_ATQOVFL_MASK; 3411 } 3412 if (val & IAVF_VF_ATQLEN1_ATQCRIT_MASK) { 3413 dev_info(&adapter->pdev->dev, "ASQ Critical Error detected\n"); 3414 val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK; 3415 } 3416 if (oldval != val) 3417 wr32(hw, IAVF_VF_ATQLEN1, val); 3418 3419freedom: 3420 kfree(event.msg_buf); 3421unlock: 3422 netdev_unlock(netdev); 3423 /* re-enable Admin queue interrupt cause */ 3424 iavf_misc_irq_enable(adapter); 3425} 3426 3427/** 3428 * iavf_free_all_tx_resources - Free Tx Resources for All Queues 3429 * @adapter: board private structure 3430 * 3431 * Free all transmit software resources 3432 **/ 3433void iavf_free_all_tx_resources(struct iavf_adapter *adapter) 3434{ 3435 int i; 3436 3437 if (!adapter->tx_rings) 3438 return; 3439 3440 for (i = 0; i < adapter->num_active_queues; i++) 3441 if (adapter->tx_rings[i].desc) 3442 iavf_free_tx_resources(&adapter->tx_rings[i]); 3443} 3444 3445/** 3446 * iavf_setup_all_tx_resources - allocate all queues Tx resources 3447 * @adapter: board private structure 3448 * 3449 * If this function returns with an error, then it's possible one or 3450 * more of the rings is populated (while the rest are not). It is the 3451 * callers duty to clean those orphaned rings. 3452 * 3453 * Return 0 on success, negative on failure 3454 **/ 3455static int iavf_setup_all_tx_resources(struct iavf_adapter *adapter) 3456{ 3457 int i, err = 0; 3458 3459 for (i = 0; i < adapter->num_active_queues; i++) { 3460 adapter->tx_rings[i].count = adapter->tx_desc_count; 3461 err = iavf_setup_tx_descriptors(&adapter->tx_rings[i]); 3462 if (!err) 3463 continue; 3464 dev_err(&adapter->pdev->dev, 3465 "Allocation for Tx Queue %u failed\n", i); 3466 break; 3467 } 3468 3469 return err; 3470} 3471 3472/** 3473 * iavf_setup_all_rx_resources - allocate all queues Rx resources 3474 * @adapter: board private structure 3475 * 3476 * If this function returns with an error, then it's possible one or 3477 * more of the rings is populated (while the rest are not). It is the 3478 * callers duty to clean those orphaned rings. 3479 * 3480 * Return 0 on success, negative on failure 3481 **/ 3482static int iavf_setup_all_rx_resources(struct iavf_adapter *adapter) 3483{ 3484 int i, err = 0; 3485 3486 for (i = 0; i < adapter->num_active_queues; i++) { 3487 adapter->rx_rings[i].count = adapter->rx_desc_count; 3488 err = iavf_setup_rx_descriptors(&adapter->rx_rings[i]); 3489 if (!err) 3490 continue; 3491 dev_err(&adapter->pdev->dev, 3492 "Allocation for Rx Queue %u failed\n", i); 3493 break; 3494 } 3495 return err; 3496} 3497 3498/** 3499 * iavf_free_all_rx_resources - Free Rx Resources for All Queues 3500 * @adapter: board private structure 3501 * 3502 * Free all receive software resources 3503 **/ 3504void iavf_free_all_rx_resources(struct iavf_adapter *adapter) 3505{ 3506 int i; 3507 3508 if (!adapter->rx_rings) 3509 return; 3510 3511 for (i = 0; i < adapter->num_active_queues; i++) 3512 if (adapter->rx_rings[i].desc) 3513 iavf_free_rx_resources(&adapter->rx_rings[i]); 3514} 3515 3516/** 3517 * iavf_validate_tx_bandwidth - validate the max Tx bandwidth 3518 * @adapter: board private structure 3519 * @max_tx_rate: max Tx bw for a tc 3520 **/ 3521static int iavf_validate_tx_bandwidth(struct iavf_adapter *adapter, 3522 u64 max_tx_rate) 3523{ 3524 int speed = 0, ret = 0; 3525 3526 if (ADV_LINK_SUPPORT(adapter)) { 3527 if (adapter->link_speed_mbps < U32_MAX) { 3528 speed = adapter->link_speed_mbps; 3529 goto validate_bw; 3530 } else { 3531 dev_err(&adapter->pdev->dev, "Unknown link speed\n"); 3532 return -EINVAL; 3533 } 3534 } 3535 3536 switch (adapter->link_speed) { 3537 case VIRTCHNL_LINK_SPEED_40GB: 3538 speed = SPEED_40000; 3539 break; 3540 case VIRTCHNL_LINK_SPEED_25GB: 3541 speed = SPEED_25000; 3542 break; 3543 case VIRTCHNL_LINK_SPEED_20GB: 3544 speed = SPEED_20000; 3545 break; 3546 case VIRTCHNL_LINK_SPEED_10GB: 3547 speed = SPEED_10000; 3548 break; 3549 case VIRTCHNL_LINK_SPEED_5GB: 3550 speed = SPEED_5000; 3551 break; 3552 case VIRTCHNL_LINK_SPEED_2_5GB: 3553 speed = SPEED_2500; 3554 break; 3555 case VIRTCHNL_LINK_SPEED_1GB: 3556 speed = SPEED_1000; 3557 break; 3558 case VIRTCHNL_LINK_SPEED_100MB: 3559 speed = SPEED_100; 3560 break; 3561 default: 3562 break; 3563 } 3564 3565validate_bw: 3566 if (max_tx_rate > speed) { 3567 dev_err(&adapter->pdev->dev, 3568 "Invalid tx rate specified\n"); 3569 ret = -EINVAL; 3570 } 3571 3572 return ret; 3573} 3574 3575/** 3576 * iavf_validate_ch_config - validate queue mapping info 3577 * @adapter: board private structure 3578 * @mqprio_qopt: queue parameters 3579 * 3580 * This function validates if the config provided by the user to 3581 * configure queue channels is valid or not. Returns 0 on a valid 3582 * config. 3583 **/ 3584static int iavf_validate_ch_config(struct iavf_adapter *adapter, 3585 struct tc_mqprio_qopt_offload *mqprio_qopt) 3586{ 3587 u64 total_max_rate = 0; 3588 u32 tx_rate_rem = 0; 3589 int i, num_qps = 0; 3590 u64 tx_rate = 0; 3591 int ret = 0; 3592 3593 if (mqprio_qopt->qopt.num_tc > IAVF_MAX_TRAFFIC_CLASS || 3594 mqprio_qopt->qopt.num_tc < 1) 3595 return -EINVAL; 3596 3597 for (i = 0; i <= mqprio_qopt->qopt.num_tc - 1; i++) { 3598 if (!mqprio_qopt->qopt.count[i] || 3599 mqprio_qopt->qopt.offset[i] != num_qps) 3600 return -EINVAL; 3601 if (mqprio_qopt->min_rate[i]) { 3602 dev_err(&adapter->pdev->dev, 3603 "Invalid min tx rate (greater than 0) specified for TC%d\n", 3604 i); 3605 return -EINVAL; 3606 } 3607 3608 /* convert to Mbps */ 3609 tx_rate = div_u64(mqprio_qopt->max_rate[i], 3610 IAVF_MBPS_DIVISOR); 3611 3612 if (mqprio_qopt->max_rate[i] && 3613 tx_rate < IAVF_MBPS_QUANTA) { 3614 dev_err(&adapter->pdev->dev, 3615 "Invalid max tx rate for TC%d, minimum %dMbps\n", 3616 i, IAVF_MBPS_QUANTA); 3617 return -EINVAL; 3618 } 3619 3620 (void)div_u64_rem(tx_rate, IAVF_MBPS_QUANTA, &tx_rate_rem); 3621 3622 if (tx_rate_rem != 0) { 3623 dev_err(&adapter->pdev->dev, 3624 "Invalid max tx rate for TC%d, not divisible by %d\n", 3625 i, IAVF_MBPS_QUANTA); 3626 return -EINVAL; 3627 } 3628 3629 total_max_rate += tx_rate; 3630 num_qps += mqprio_qopt->qopt.count[i]; 3631 } 3632 if (num_qps > adapter->num_active_queues) { 3633 dev_err(&adapter->pdev->dev, 3634 "Cannot support requested number of queues\n"); 3635 return -EINVAL; 3636 } 3637 3638 ret = iavf_validate_tx_bandwidth(adapter, total_max_rate); 3639 return ret; 3640} 3641 3642/** 3643 * iavf_del_all_cloud_filters - delete all cloud filters on the traffic classes 3644 * @adapter: board private structure 3645 **/ 3646static void iavf_del_all_cloud_filters(struct iavf_adapter *adapter) 3647{ 3648 struct iavf_cloud_filter *cf, *cftmp; 3649 3650 spin_lock_bh(&adapter->cloud_filter_list_lock); 3651 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, 3652 list) { 3653 list_del(&cf->list); 3654 kfree(cf); 3655 adapter->num_cloud_filters--; 3656 } 3657 spin_unlock_bh(&adapter->cloud_filter_list_lock); 3658} 3659 3660/** 3661 * iavf_is_tc_config_same - Compare the mqprio TC config with the 3662 * TC config already configured on this adapter. 3663 * @adapter: board private structure 3664 * @mqprio_qopt: TC config received from kernel. 3665 * 3666 * This function compares the TC config received from the kernel 3667 * with the config already configured on the adapter. 3668 * 3669 * Return: True if configuration is same, false otherwise. 3670 **/ 3671static bool iavf_is_tc_config_same(struct iavf_adapter *adapter, 3672 struct tc_mqprio_qopt *mqprio_qopt) 3673{ 3674 struct virtchnl_channel_info *ch = &adapter->ch_config.ch_info[0]; 3675 int i; 3676 3677 if (adapter->num_tc != mqprio_qopt->num_tc) 3678 return false; 3679 3680 for (i = 0; i < adapter->num_tc; i++) { 3681 if (ch[i].count != mqprio_qopt->count[i] || 3682 ch[i].offset != mqprio_qopt->offset[i]) 3683 return false; 3684 } 3685 return true; 3686} 3687 3688/** 3689 * __iavf_setup_tc - configure multiple traffic classes 3690 * @netdev: network interface device structure 3691 * @type_data: tc offload data 3692 * 3693 * This function processes the config information provided by the 3694 * user to configure traffic classes/queue channels and packages the 3695 * information to request the PF to setup traffic classes. 3696 * 3697 * Returns 0 on success. 3698 **/ 3699static int __iavf_setup_tc(struct net_device *netdev, void *type_data) 3700{ 3701 struct tc_mqprio_qopt_offload *mqprio_qopt = type_data; 3702 struct iavf_adapter *adapter = netdev_priv(netdev); 3703 struct virtchnl_vf_resource *vfres = adapter->vf_res; 3704 u8 num_tc = 0, total_qps = 0; 3705 int ret = 0, netdev_tc = 0; 3706 u64 max_tx_rate; 3707 u16 mode; 3708 int i; 3709 3710 num_tc = mqprio_qopt->qopt.num_tc; 3711 mode = mqprio_qopt->mode; 3712 3713 /* delete queue_channel */ 3714 if (!mqprio_qopt->qopt.hw) { 3715 if (adapter->ch_config.state == __IAVF_TC_RUNNING) { 3716 /* reset the tc configuration */ 3717 netdev_reset_tc(netdev); 3718 adapter->num_tc = 0; 3719 netif_tx_stop_all_queues(netdev); 3720 netif_tx_disable(netdev); 3721 iavf_del_all_cloud_filters(adapter); 3722 adapter->aq_required = IAVF_FLAG_AQ_DISABLE_CHANNELS; 3723 total_qps = adapter->orig_num_active_queues; 3724 goto exit; 3725 } else { 3726 return -EINVAL; 3727 } 3728 } 3729 3730 /* add queue channel */ 3731 if (mode == TC_MQPRIO_MODE_CHANNEL) { 3732 if (!(vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ)) { 3733 dev_err(&adapter->pdev->dev, "ADq not supported\n"); 3734 return -EOPNOTSUPP; 3735 } 3736 if (adapter->ch_config.state != __IAVF_TC_INVALID) { 3737 dev_err(&adapter->pdev->dev, "TC configuration already exists\n"); 3738 return -EINVAL; 3739 } 3740 3741 ret = iavf_validate_ch_config(adapter, mqprio_qopt); 3742 if (ret) 3743 return ret; 3744 /* Return if same TC config is requested */ 3745 if (iavf_is_tc_config_same(adapter, &mqprio_qopt->qopt)) 3746 return 0; 3747 adapter->num_tc = num_tc; 3748 3749 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3750 if (i < num_tc) { 3751 adapter->ch_config.ch_info[i].count = 3752 mqprio_qopt->qopt.count[i]; 3753 adapter->ch_config.ch_info[i].offset = 3754 mqprio_qopt->qopt.offset[i]; 3755 total_qps += mqprio_qopt->qopt.count[i]; 3756 max_tx_rate = mqprio_qopt->max_rate[i]; 3757 /* convert to Mbps */ 3758 max_tx_rate = div_u64(max_tx_rate, 3759 IAVF_MBPS_DIVISOR); 3760 adapter->ch_config.ch_info[i].max_tx_rate = 3761 max_tx_rate; 3762 } else { 3763 adapter->ch_config.ch_info[i].count = 1; 3764 adapter->ch_config.ch_info[i].offset = 0; 3765 } 3766 } 3767 3768 /* Take snapshot of original config such as "num_active_queues" 3769 * It is used later when delete ADQ flow is exercised, so that 3770 * once delete ADQ flow completes, VF shall go back to its 3771 * original queue configuration 3772 */ 3773 3774 adapter->orig_num_active_queues = adapter->num_active_queues; 3775 3776 /* Store queue info based on TC so that VF gets configured 3777 * with correct number of queues when VF completes ADQ config 3778 * flow 3779 */ 3780 adapter->ch_config.total_qps = total_qps; 3781 3782 netif_tx_stop_all_queues(netdev); 3783 netif_tx_disable(netdev); 3784 adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_CHANNELS; 3785 netdev_reset_tc(netdev); 3786 /* Report the tc mapping up the stack */ 3787 netdev_set_num_tc(adapter->netdev, num_tc); 3788 for (i = 0; i < IAVF_MAX_TRAFFIC_CLASS; i++) { 3789 u16 qcount = mqprio_qopt->qopt.count[i]; 3790 u16 qoffset = mqprio_qopt->qopt.offset[i]; 3791 3792 if (i < num_tc) 3793 netdev_set_tc_queue(netdev, netdev_tc++, qcount, 3794 qoffset); 3795 } 3796 } 3797exit: 3798 if (test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 3799 return 0; 3800 3801 netif_set_real_num_rx_queues(netdev, total_qps); 3802 netif_set_real_num_tx_queues(netdev, total_qps); 3803 3804 return ret; 3805} 3806 3807/** 3808 * iavf_parse_cls_flower - Parse tc flower filters provided by kernel 3809 * @adapter: board private structure 3810 * @f: pointer to struct flow_cls_offload 3811 * @filter: pointer to cloud filter structure 3812 */ 3813static int iavf_parse_cls_flower(struct iavf_adapter *adapter, 3814 struct flow_cls_offload *f, 3815 struct iavf_cloud_filter *filter) 3816{ 3817 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 3818 struct flow_dissector *dissector = rule->match.dissector; 3819 u16 n_proto_mask = 0; 3820 u16 n_proto_key = 0; 3821 u8 field_flags = 0; 3822 u16 addr_type = 0; 3823 u16 n_proto = 0; 3824 int i = 0; 3825 struct virtchnl_filter *vf = &filter->f; 3826 3827 if (dissector->used_keys & 3828 ~(BIT_ULL(FLOW_DISSECTOR_KEY_CONTROL) | 3829 BIT_ULL(FLOW_DISSECTOR_KEY_BASIC) | 3830 BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS) | 3831 BIT_ULL(FLOW_DISSECTOR_KEY_VLAN) | 3832 BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | 3833 BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | 3834 BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) | 3835 BIT_ULL(FLOW_DISSECTOR_KEY_ENC_KEYID))) { 3836 dev_err(&adapter->pdev->dev, "Unsupported key used: 0x%llx\n", 3837 dissector->used_keys); 3838 return -EOPNOTSUPP; 3839 } 3840 3841 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) { 3842 struct flow_match_enc_keyid match; 3843 3844 flow_rule_match_enc_keyid(rule, &match); 3845 if (match.mask->keyid != 0) 3846 field_flags |= IAVF_CLOUD_FIELD_TEN_ID; 3847 } 3848 3849 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) { 3850 struct flow_match_basic match; 3851 3852 flow_rule_match_basic(rule, &match); 3853 n_proto_key = ntohs(match.key->n_proto); 3854 n_proto_mask = ntohs(match.mask->n_proto); 3855 3856 if (n_proto_key == ETH_P_ALL) { 3857 n_proto_key = 0; 3858 n_proto_mask = 0; 3859 } 3860 n_proto = n_proto_key & n_proto_mask; 3861 if (n_proto != ETH_P_IP && n_proto != ETH_P_IPV6) 3862 return -EINVAL; 3863 if (n_proto == ETH_P_IPV6) { 3864 /* specify flow type as TCP IPv6 */ 3865 vf->flow_type = VIRTCHNL_TCP_V6_FLOW; 3866 } 3867 3868 if (match.key->ip_proto != IPPROTO_TCP) { 3869 dev_info(&adapter->pdev->dev, "Only TCP transport is supported\n"); 3870 return -EINVAL; 3871 } 3872 } 3873 3874 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { 3875 struct flow_match_eth_addrs match; 3876 3877 flow_rule_match_eth_addrs(rule, &match); 3878 3879 /* use is_broadcast and is_zero to check for all 0xf or 0 */ 3880 if (!is_zero_ether_addr(match.mask->dst)) { 3881 if (is_broadcast_ether_addr(match.mask->dst)) { 3882 field_flags |= IAVF_CLOUD_FIELD_OMAC; 3883 } else { 3884 dev_err(&adapter->pdev->dev, "Bad ether dest mask %pM\n", 3885 match.mask->dst); 3886 return -EINVAL; 3887 } 3888 } 3889 3890 if (!is_zero_ether_addr(match.mask->src)) { 3891 if (is_broadcast_ether_addr(match.mask->src)) { 3892 field_flags |= IAVF_CLOUD_FIELD_IMAC; 3893 } else { 3894 dev_err(&adapter->pdev->dev, "Bad ether src mask %pM\n", 3895 match.mask->src); 3896 return -EINVAL; 3897 } 3898 } 3899 3900 if (!is_zero_ether_addr(match.key->dst)) 3901 if (is_valid_ether_addr(match.key->dst) || 3902 is_multicast_ether_addr(match.key->dst)) { 3903 /* set the mask if a valid dst_mac address */ 3904 for (i = 0; i < ETH_ALEN; i++) 3905 vf->mask.tcp_spec.dst_mac[i] |= 0xff; 3906 ether_addr_copy(vf->data.tcp_spec.dst_mac, 3907 match.key->dst); 3908 } 3909 3910 if (!is_zero_ether_addr(match.key->src)) 3911 if (is_valid_ether_addr(match.key->src) || 3912 is_multicast_ether_addr(match.key->src)) { 3913 /* set the mask if a valid dst_mac address */ 3914 for (i = 0; i < ETH_ALEN; i++) 3915 vf->mask.tcp_spec.src_mac[i] |= 0xff; 3916 ether_addr_copy(vf->data.tcp_spec.src_mac, 3917 match.key->src); 3918 } 3919 } 3920 3921 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) { 3922 struct flow_match_vlan match; 3923 3924 flow_rule_match_vlan(rule, &match); 3925 if (match.mask->vlan_id) { 3926 if (match.mask->vlan_id == VLAN_VID_MASK) { 3927 field_flags |= IAVF_CLOUD_FIELD_IVLAN; 3928 } else { 3929 dev_err(&adapter->pdev->dev, "Bad vlan mask %u\n", 3930 match.mask->vlan_id); 3931 return -EINVAL; 3932 } 3933 } 3934 vf->mask.tcp_spec.vlan_id |= cpu_to_be16(0xffff); 3935 vf->data.tcp_spec.vlan_id = cpu_to_be16(match.key->vlan_id); 3936 } 3937 3938 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) { 3939 struct flow_match_control match; 3940 3941 flow_rule_match_control(rule, &match); 3942 addr_type = match.key->addr_type; 3943 3944 if (flow_rule_has_control_flags(match.mask->flags, 3945 f->common.extack)) 3946 return -EOPNOTSUPP; 3947 } 3948 3949 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { 3950 struct flow_match_ipv4_addrs match; 3951 3952 flow_rule_match_ipv4_addrs(rule, &match); 3953 if (match.mask->dst) { 3954 if (match.mask->dst == cpu_to_be32(0xffffffff)) { 3955 field_flags |= IAVF_CLOUD_FIELD_IIP; 3956 } else { 3957 dev_err(&adapter->pdev->dev, "Bad ip dst mask 0x%08x\n", 3958 be32_to_cpu(match.mask->dst)); 3959 return -EINVAL; 3960 } 3961 } 3962 3963 if (match.mask->src) { 3964 if (match.mask->src == cpu_to_be32(0xffffffff)) { 3965 field_flags |= IAVF_CLOUD_FIELD_IIP; 3966 } else { 3967 dev_err(&adapter->pdev->dev, "Bad ip src mask 0x%08x\n", 3968 be32_to_cpu(match.mask->src)); 3969 return -EINVAL; 3970 } 3971 } 3972 3973 if (field_flags & IAVF_CLOUD_FIELD_TEN_ID) { 3974 dev_info(&adapter->pdev->dev, "Tenant id not allowed for ip filter\n"); 3975 return -EINVAL; 3976 } 3977 if (match.key->dst) { 3978 vf->mask.tcp_spec.dst_ip[0] |= cpu_to_be32(0xffffffff); 3979 vf->data.tcp_spec.dst_ip[0] = match.key->dst; 3980 } 3981 if (match.key->src) { 3982 vf->mask.tcp_spec.src_ip[0] |= cpu_to_be32(0xffffffff); 3983 vf->data.tcp_spec.src_ip[0] = match.key->src; 3984 } 3985 } 3986 3987 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { 3988 struct flow_match_ipv6_addrs match; 3989 3990 flow_rule_match_ipv6_addrs(rule, &match); 3991 3992 /* validate mask, make sure it is not IPV6_ADDR_ANY */ 3993 if (ipv6_addr_any(&match.mask->dst)) { 3994 dev_err(&adapter->pdev->dev, "Bad ipv6 dst mask 0x%02x\n", 3995 IPV6_ADDR_ANY); 3996 return -EINVAL; 3997 } 3998 3999 /* src and dest IPv6 address should not be LOOPBACK 4000 * (0:0:0:0:0:0:0:1) which can be represented as ::1 4001 */ 4002 if (ipv6_addr_loopback(&match.key->dst) || 4003 ipv6_addr_loopback(&match.key->src)) { 4004 dev_err(&adapter->pdev->dev, 4005 "ipv6 addr should not be loopback\n"); 4006 return -EINVAL; 4007 } 4008 if (!ipv6_addr_any(&match.mask->dst) || 4009 !ipv6_addr_any(&match.mask->src)) 4010 field_flags |= IAVF_CLOUD_FIELD_IIP; 4011 4012 for (i = 0; i < 4; i++) 4013 vf->mask.tcp_spec.dst_ip[i] |= cpu_to_be32(0xffffffff); 4014 memcpy(&vf->data.tcp_spec.dst_ip, &match.key->dst.s6_addr32, 4015 sizeof(vf->data.tcp_spec.dst_ip)); 4016 for (i = 0; i < 4; i++) 4017 vf->mask.tcp_spec.src_ip[i] |= cpu_to_be32(0xffffffff); 4018 memcpy(&vf->data.tcp_spec.src_ip, &match.key->src.s6_addr32, 4019 sizeof(vf->data.tcp_spec.src_ip)); 4020 } 4021 if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) { 4022 struct flow_match_ports match; 4023 4024 flow_rule_match_ports(rule, &match); 4025 if (match.mask->src) { 4026 if (match.mask->src == cpu_to_be16(0xffff)) { 4027 field_flags |= IAVF_CLOUD_FIELD_IIP; 4028 } else { 4029 dev_err(&adapter->pdev->dev, "Bad src port mask %u\n", 4030 be16_to_cpu(match.mask->src)); 4031 return -EINVAL; 4032 } 4033 } 4034 4035 if (match.mask->dst) { 4036 if (match.mask->dst == cpu_to_be16(0xffff)) { 4037 field_flags |= IAVF_CLOUD_FIELD_IIP; 4038 } else { 4039 dev_err(&adapter->pdev->dev, "Bad dst port mask %u\n", 4040 be16_to_cpu(match.mask->dst)); 4041 return -EINVAL; 4042 } 4043 } 4044 if (match.key->dst) { 4045 vf->mask.tcp_spec.dst_port |= cpu_to_be16(0xffff); 4046 vf->data.tcp_spec.dst_port = match.key->dst; 4047 } 4048 4049 if (match.key->src) { 4050 vf->mask.tcp_spec.src_port |= cpu_to_be16(0xffff); 4051 vf->data.tcp_spec.src_port = match.key->src; 4052 } 4053 } 4054 vf->field_flags = field_flags; 4055 4056 return 0; 4057} 4058 4059/** 4060 * iavf_handle_tclass - Forward to a traffic class on the device 4061 * @adapter: board private structure 4062 * @tc: traffic class index on the device 4063 * @filter: pointer to cloud filter structure 4064 */ 4065static int iavf_handle_tclass(struct iavf_adapter *adapter, u32 tc, 4066 struct iavf_cloud_filter *filter) 4067{ 4068 if (tc == 0) 4069 return 0; 4070 if (tc < adapter->num_tc) { 4071 if (!filter->f.data.tcp_spec.dst_port) { 4072 dev_err(&adapter->pdev->dev, 4073 "Specify destination port to redirect to traffic class other than TC0\n"); 4074 return -EINVAL; 4075 } 4076 } 4077 /* redirect to a traffic class on the same device */ 4078 filter->f.action = VIRTCHNL_ACTION_TC_REDIRECT; 4079 filter->f.action_meta = tc; 4080 return 0; 4081} 4082 4083/** 4084 * iavf_find_cf - Find the cloud filter in the list 4085 * @adapter: Board private structure 4086 * @cookie: filter specific cookie 4087 * 4088 * Returns ptr to the filter object or NULL. Must be called while holding the 4089 * cloud_filter_list_lock. 4090 */ 4091static struct iavf_cloud_filter *iavf_find_cf(struct iavf_adapter *adapter, 4092 unsigned long *cookie) 4093{ 4094 struct iavf_cloud_filter *filter = NULL; 4095 4096 if (!cookie) 4097 return NULL; 4098 4099 list_for_each_entry(filter, &adapter->cloud_filter_list, list) { 4100 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie))) 4101 return filter; 4102 } 4103 return NULL; 4104} 4105 4106/** 4107 * iavf_configure_clsflower - Add tc flower filters 4108 * @adapter: board private structure 4109 * @cls_flower: Pointer to struct flow_cls_offload 4110 */ 4111static int iavf_configure_clsflower(struct iavf_adapter *adapter, 4112 struct flow_cls_offload *cls_flower) 4113{ 4114 int tc = tc_classid_to_hwtc(adapter->netdev, cls_flower->classid); 4115 struct iavf_cloud_filter *filter; 4116 int err; 4117 4118 if (tc < 0) { 4119 dev_err(&adapter->pdev->dev, "Invalid traffic class\n"); 4120 return -EINVAL; 4121 } 4122 4123 filter = kzalloc(sizeof(*filter), GFP_KERNEL); 4124 if (!filter) 4125 return -ENOMEM; 4126 filter->cookie = cls_flower->cookie; 4127 4128 netdev_lock(adapter->netdev); 4129 4130 /* bail out here if filter already exists */ 4131 spin_lock_bh(&adapter->cloud_filter_list_lock); 4132 if (iavf_find_cf(adapter, &cls_flower->cookie)) { 4133 dev_err(&adapter->pdev->dev, "Failed to add TC Flower filter, it already exists\n"); 4134 err = -EEXIST; 4135 goto spin_unlock; 4136 } 4137 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4138 4139 /* set the mask to all zeroes to begin with */ 4140 memset(&filter->f.mask.tcp_spec, 0, sizeof(struct virtchnl_l4_spec)); 4141 /* start out with flow type and eth type IPv4 to begin with */ 4142 filter->f.flow_type = VIRTCHNL_TCP_V4_FLOW; 4143 err = iavf_parse_cls_flower(adapter, cls_flower, filter); 4144 if (err) 4145 goto err; 4146 4147 err = iavf_handle_tclass(adapter, tc, filter); 4148 if (err) 4149 goto err; 4150 4151 /* add filter to the list */ 4152 spin_lock_bh(&adapter->cloud_filter_list_lock); 4153 list_add_tail(&filter->list, &adapter->cloud_filter_list); 4154 adapter->num_cloud_filters++; 4155 filter->add = true; 4156 adapter->aq_required |= IAVF_FLAG_AQ_ADD_CLOUD_FILTER; 4157spin_unlock: 4158 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4159err: 4160 if (err) 4161 kfree(filter); 4162 4163 netdev_unlock(adapter->netdev); 4164 return err; 4165} 4166 4167/** 4168 * iavf_delete_clsflower - Remove tc flower filters 4169 * @adapter: board private structure 4170 * @cls_flower: Pointer to struct flow_cls_offload 4171 */ 4172static int iavf_delete_clsflower(struct iavf_adapter *adapter, 4173 struct flow_cls_offload *cls_flower) 4174{ 4175 struct iavf_cloud_filter *filter = NULL; 4176 int err = 0; 4177 4178 spin_lock_bh(&adapter->cloud_filter_list_lock); 4179 filter = iavf_find_cf(adapter, &cls_flower->cookie); 4180 if (filter) { 4181 filter->del = true; 4182 adapter->aq_required |= IAVF_FLAG_AQ_DEL_CLOUD_FILTER; 4183 } else { 4184 err = -EINVAL; 4185 } 4186 spin_unlock_bh(&adapter->cloud_filter_list_lock); 4187 4188 return err; 4189} 4190 4191/** 4192 * iavf_setup_tc_cls_flower - flower classifier offloads 4193 * @adapter: pointer to iavf adapter structure 4194 * @cls_flower: pointer to flow_cls_offload struct with flow info 4195 */ 4196static int iavf_setup_tc_cls_flower(struct iavf_adapter *adapter, 4197 struct flow_cls_offload *cls_flower) 4198{ 4199 switch (cls_flower->command) { 4200 case FLOW_CLS_REPLACE: 4201 return iavf_configure_clsflower(adapter, cls_flower); 4202 case FLOW_CLS_DESTROY: 4203 return iavf_delete_clsflower(adapter, cls_flower); 4204 case FLOW_CLS_STATS: 4205 return -EOPNOTSUPP; 4206 default: 4207 return -EOPNOTSUPP; 4208 } 4209} 4210 4211/** 4212 * iavf_add_cls_u32 - Add U32 classifier offloads 4213 * @adapter: pointer to iavf adapter structure 4214 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4215 * 4216 * Return: 0 on success or negative errno on failure. 4217 */ 4218static int iavf_add_cls_u32(struct iavf_adapter *adapter, 4219 struct tc_cls_u32_offload *cls_u32) 4220{ 4221 struct netlink_ext_ack *extack = cls_u32->common.extack; 4222 struct virtchnl_fdir_rule *rule_cfg; 4223 struct virtchnl_filter_action *vact; 4224 struct virtchnl_proto_hdrs *hdrs; 4225 struct ethhdr *spec_h, *mask_h; 4226 const struct tc_action *act; 4227 struct iavf_fdir_fltr *fltr; 4228 struct tcf_exts *exts; 4229 unsigned int q_index; 4230 int i, status = 0; 4231 int off_base = 0; 4232 4233 if (cls_u32->knode.link_handle) { 4234 NL_SET_ERR_MSG_MOD(extack, "Linking not supported"); 4235 return -EOPNOTSUPP; 4236 } 4237 4238 fltr = kzalloc(sizeof(*fltr), GFP_KERNEL); 4239 if (!fltr) 4240 return -ENOMEM; 4241 4242 rule_cfg = &fltr->vc_add_msg.rule_cfg; 4243 hdrs = &rule_cfg->proto_hdrs; 4244 hdrs->count = 0; 4245 4246 /* The parser lib at the PF expects the packet starting with MAC hdr */ 4247 switch (ntohs(cls_u32->common.protocol)) { 4248 case ETH_P_802_3: 4249 break; 4250 case ETH_P_IP: 4251 spec_h = (struct ethhdr *)hdrs->raw.spec; 4252 mask_h = (struct ethhdr *)hdrs->raw.mask; 4253 spec_h->h_proto = htons(ETH_P_IP); 4254 mask_h->h_proto = htons(0xFFFF); 4255 off_base += ETH_HLEN; 4256 break; 4257 default: 4258 NL_SET_ERR_MSG_MOD(extack, "Only 802_3 and ip filter protocols are supported"); 4259 status = -EOPNOTSUPP; 4260 goto free_alloc; 4261 } 4262 4263 for (i = 0; i < cls_u32->knode.sel->nkeys; i++) { 4264 __be32 val, mask; 4265 int off; 4266 4267 off = off_base + cls_u32->knode.sel->keys[i].off; 4268 val = cls_u32->knode.sel->keys[i].val; 4269 mask = cls_u32->knode.sel->keys[i].mask; 4270 4271 if (off >= sizeof(hdrs->raw.spec)) { 4272 NL_SET_ERR_MSG_MOD(extack, "Input exceeds maximum allowed."); 4273 status = -EINVAL; 4274 goto free_alloc; 4275 } 4276 4277 memcpy(&hdrs->raw.spec[off], &val, sizeof(val)); 4278 memcpy(&hdrs->raw.mask[off], &mask, sizeof(mask)); 4279 hdrs->raw.pkt_len = off + sizeof(val); 4280 } 4281 4282 /* Only one action is allowed */ 4283 rule_cfg->action_set.count = 1; 4284 vact = &rule_cfg->action_set.actions[0]; 4285 exts = cls_u32->knode.exts; 4286 4287 tcf_exts_for_each_action(i, act, exts) { 4288 /* FDIR queue */ 4289 if (is_tcf_skbedit_rx_queue_mapping(act)) { 4290 q_index = tcf_skbedit_rx_queue_mapping(act); 4291 if (q_index >= adapter->num_active_queues) { 4292 status = -EINVAL; 4293 goto free_alloc; 4294 } 4295 4296 vact->type = VIRTCHNL_ACTION_QUEUE; 4297 vact->act_conf.queue.index = q_index; 4298 break; 4299 } 4300 4301 /* Drop */ 4302 if (is_tcf_gact_shot(act)) { 4303 vact->type = VIRTCHNL_ACTION_DROP; 4304 break; 4305 } 4306 4307 /* Unsupported action */ 4308 NL_SET_ERR_MSG_MOD(extack, "Unsupported action."); 4309 status = -EOPNOTSUPP; 4310 goto free_alloc; 4311 } 4312 4313 fltr->vc_add_msg.vsi_id = adapter->vsi.id; 4314 fltr->cls_u32_handle = cls_u32->knode.handle; 4315 return iavf_fdir_add_fltr(adapter, fltr); 4316 4317free_alloc: 4318 kfree(fltr); 4319 return status; 4320} 4321 4322/** 4323 * iavf_del_cls_u32 - Delete U32 classifier offloads 4324 * @adapter: pointer to iavf adapter structure 4325 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4326 * 4327 * Return: 0 on success or negative errno on failure. 4328 */ 4329static int iavf_del_cls_u32(struct iavf_adapter *adapter, 4330 struct tc_cls_u32_offload *cls_u32) 4331{ 4332 return iavf_fdir_del_fltr(adapter, true, cls_u32->knode.handle); 4333} 4334 4335/** 4336 * iavf_setup_tc_cls_u32 - U32 filter offloads 4337 * @adapter: pointer to iavf adapter structure 4338 * @cls_u32: pointer to tc_cls_u32_offload struct with flow info 4339 * 4340 * Return: 0 on success or negative errno on failure. 4341 */ 4342static int iavf_setup_tc_cls_u32(struct iavf_adapter *adapter, 4343 struct tc_cls_u32_offload *cls_u32) 4344{ 4345 if (!TC_U32_SUPPORT(adapter) || !FDIR_FLTR_SUPPORT(adapter)) 4346 return -EOPNOTSUPP; 4347 4348 switch (cls_u32->command) { 4349 case TC_CLSU32_NEW_KNODE: 4350 case TC_CLSU32_REPLACE_KNODE: 4351 return iavf_add_cls_u32(adapter, cls_u32); 4352 case TC_CLSU32_DELETE_KNODE: 4353 return iavf_del_cls_u32(adapter, cls_u32); 4354 default: 4355 return -EOPNOTSUPP; 4356 } 4357} 4358 4359/** 4360 * iavf_setup_tc_block_cb - block callback for tc 4361 * @type: type of offload 4362 * @type_data: offload data 4363 * @cb_priv: 4364 * 4365 * This function is the block callback for traffic classes 4366 **/ 4367static int iavf_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 4368 void *cb_priv) 4369{ 4370 struct iavf_adapter *adapter = cb_priv; 4371 4372 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 4373 return -EOPNOTSUPP; 4374 4375 switch (type) { 4376 case TC_SETUP_CLSFLOWER: 4377 return iavf_setup_tc_cls_flower(cb_priv, type_data); 4378 case TC_SETUP_CLSU32: 4379 return iavf_setup_tc_cls_u32(cb_priv, type_data); 4380 default: 4381 return -EOPNOTSUPP; 4382 } 4383} 4384 4385static LIST_HEAD(iavf_block_cb_list); 4386 4387/** 4388 * iavf_setup_tc - configure multiple traffic classes 4389 * @netdev: network interface device structure 4390 * @type: type of offload 4391 * @type_data: tc offload data 4392 * 4393 * This function is the callback to ndo_setup_tc in the 4394 * netdev_ops. 4395 * 4396 * Returns 0 on success 4397 **/ 4398static int iavf_setup_tc(struct net_device *netdev, enum tc_setup_type type, 4399 void *type_data) 4400{ 4401 struct iavf_adapter *adapter = netdev_priv(netdev); 4402 4403 switch (type) { 4404 case TC_SETUP_QDISC_MQPRIO: 4405 return __iavf_setup_tc(netdev, type_data); 4406 case TC_SETUP_BLOCK: 4407 return flow_block_cb_setup_simple(type_data, 4408 &iavf_block_cb_list, 4409 iavf_setup_tc_block_cb, 4410 adapter, adapter, true); 4411 default: 4412 return -EOPNOTSUPP; 4413 } 4414} 4415 4416/** 4417 * iavf_restore_fdir_filters 4418 * @adapter: board private structure 4419 * 4420 * Restore existing FDIR filters when VF netdev comes back up. 4421 **/ 4422static void iavf_restore_fdir_filters(struct iavf_adapter *adapter) 4423{ 4424 struct iavf_fdir_fltr *f; 4425 4426 spin_lock_bh(&adapter->fdir_fltr_lock); 4427 list_for_each_entry(f, &adapter->fdir_list_head, list) { 4428 if (f->state == IAVF_FDIR_FLTR_DIS_REQUEST) { 4429 /* Cancel a request, keep filter as active */ 4430 f->state = IAVF_FDIR_FLTR_ACTIVE; 4431 } else if (f->state == IAVF_FDIR_FLTR_DIS_PENDING || 4432 f->state == IAVF_FDIR_FLTR_INACTIVE) { 4433 /* Add filters which are inactive or have a pending 4434 * request to PF to be deleted 4435 */ 4436 f->state = IAVF_FDIR_FLTR_ADD_REQUEST; 4437 adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER; 4438 } 4439 } 4440 spin_unlock_bh(&adapter->fdir_fltr_lock); 4441} 4442 4443/** 4444 * iavf_open - Called when a network interface is made active 4445 * @netdev: network interface device structure 4446 * 4447 * Returns 0 on success, negative value on failure 4448 * 4449 * The open entry point is called when a network interface is made 4450 * active by the system (IFF_UP). At this point all resources needed 4451 * for transmit and receive operations are allocated, the interrupt 4452 * handler is registered with the OS, the watchdog is started, 4453 * and the stack is notified that the interface is ready. 4454 **/ 4455static int iavf_open(struct net_device *netdev) 4456{ 4457 struct iavf_adapter *adapter = netdev_priv(netdev); 4458 int err; 4459 4460 netdev_assert_locked(netdev); 4461 4462 if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED) { 4463 dev_err(&adapter->pdev->dev, "Unable to open device due to PF driver failure.\n"); 4464 return -EIO; 4465 } 4466 4467 if (adapter->state != __IAVF_DOWN) 4468 return -EBUSY; 4469 4470 if (adapter->state == __IAVF_RUNNING && 4471 !test_bit(__IAVF_VSI_DOWN, adapter->vsi.state)) { 4472 dev_dbg(&adapter->pdev->dev, "VF is already open.\n"); 4473 return 0; 4474 } 4475 4476 /* allocate transmit descriptors */ 4477 err = iavf_setup_all_tx_resources(adapter); 4478 if (err) 4479 goto err_setup_tx; 4480 4481 /* allocate receive descriptors */ 4482 err = iavf_setup_all_rx_resources(adapter); 4483 if (err) 4484 goto err_setup_rx; 4485 4486 /* clear any pending interrupts, may auto mask */ 4487 err = iavf_request_traffic_irqs(adapter, netdev->name); 4488 if (err) 4489 goto err_req_irq; 4490 4491 spin_lock_bh(&adapter->mac_vlan_list_lock); 4492 iavf_add_filter(adapter, adapter->hw.mac.addr); 4493 spin_unlock_bh(&adapter->mac_vlan_list_lock); 4494 4495 /* Restore filters that were removed with IFF_DOWN */ 4496 iavf_restore_filters(adapter); 4497 iavf_restore_fdir_filters(adapter); 4498 4499 iavf_configure(adapter); 4500 4501 iavf_up_complete(adapter); 4502 4503 iavf_irq_enable(adapter, true); 4504 4505 return 0; 4506 4507err_req_irq: 4508 iavf_down(adapter); 4509 iavf_free_traffic_irqs(adapter); 4510err_setup_rx: 4511 iavf_free_all_rx_resources(adapter); 4512err_setup_tx: 4513 iavf_free_all_tx_resources(adapter); 4514 4515 return err; 4516} 4517 4518/** 4519 * iavf_close - Disables a network interface 4520 * @netdev: network interface device structure 4521 * 4522 * Returns 0, this is not allowed to fail 4523 * 4524 * The close entry point is called when an interface is de-activated 4525 * by the OS. The hardware is still under the drivers control, but 4526 * needs to be disabled. All IRQs except vector 0 (reserved for admin queue) 4527 * are freed, along with all transmit and receive resources. 4528 **/ 4529static int iavf_close(struct net_device *netdev) 4530{ 4531 struct iavf_adapter *adapter = netdev_priv(netdev); 4532 u64 aq_to_restore; 4533 int status; 4534 4535 netdev_assert_locked(netdev); 4536 4537 if (adapter->state <= __IAVF_DOWN_PENDING) 4538 return 0; 4539 4540 set_bit(__IAVF_VSI_DOWN, adapter->vsi.state); 4541 /* We cannot send IAVF_FLAG_AQ_GET_OFFLOAD_VLAN_V2_CAPS before 4542 * IAVF_FLAG_AQ_DISABLE_QUEUES because in such case there is rtnl 4543 * deadlock with adminq_task() until iavf_close timeouts. We must send 4544 * IAVF_FLAG_AQ_GET_CONFIG before IAVF_FLAG_AQ_DISABLE_QUEUES to make 4545 * disable queues possible for vf. Give only necessary flags to 4546 * iavf_down and save other to set them right before iavf_close() 4547 * returns, when IAVF_FLAG_AQ_DISABLE_QUEUES will be already sent and 4548 * iavf will be in DOWN state. 4549 */ 4550 aq_to_restore = adapter->aq_required; 4551 adapter->aq_required &= IAVF_FLAG_AQ_GET_CONFIG; 4552 4553 /* Remove flags which we do not want to send after close or we want to 4554 * send before disable queues. 4555 */ 4556 aq_to_restore &= ~(IAVF_FLAG_AQ_GET_CONFIG | 4557 IAVF_FLAG_AQ_ENABLE_QUEUES | 4558 IAVF_FLAG_AQ_CONFIGURE_QUEUES | 4559 IAVF_FLAG_AQ_ADD_VLAN_FILTER | 4560 IAVF_FLAG_AQ_ADD_MAC_FILTER | 4561 IAVF_FLAG_AQ_ADD_CLOUD_FILTER | 4562 IAVF_FLAG_AQ_ADD_FDIR_FILTER | 4563 IAVF_FLAG_AQ_ADD_ADV_RSS_CFG); 4564 4565 iavf_down(adapter); 4566 iavf_change_state(adapter, __IAVF_DOWN_PENDING); 4567 iavf_free_traffic_irqs(adapter); 4568 4569 netdev_unlock(netdev); 4570 4571 /* We explicitly don't free resources here because the hardware is 4572 * still active and can DMA into memory. Resources are cleared in 4573 * iavf_virtchnl_completion() after we get confirmation from the PF 4574 * driver that the rings have been stopped. 4575 * 4576 * Also, we wait for state to transition to __IAVF_DOWN before 4577 * returning. State change occurs in iavf_virtchnl_completion() after 4578 * VF resources are released (which occurs after PF driver processes and 4579 * responds to admin queue commands). 4580 */ 4581 4582 status = wait_event_timeout(adapter->down_waitqueue, 4583 adapter->state == __IAVF_DOWN, 4584 msecs_to_jiffies(500)); 4585 if (!status) 4586 netdev_warn(netdev, "Device resources not yet released\n"); 4587 netdev_lock(netdev); 4588 4589 adapter->aq_required |= aq_to_restore; 4590 4591 return 0; 4592} 4593 4594/** 4595 * iavf_change_mtu - Change the Maximum Transfer Unit 4596 * @netdev: network interface device structure 4597 * @new_mtu: new value for maximum frame size 4598 * 4599 * Returns 0 on success, negative on failure 4600 **/ 4601static int iavf_change_mtu(struct net_device *netdev, int new_mtu) 4602{ 4603 struct iavf_adapter *adapter = netdev_priv(netdev); 4604 4605 netdev_dbg(netdev, "changing MTU from %d to %d\n", 4606 netdev->mtu, new_mtu); 4607 WRITE_ONCE(netdev->mtu, new_mtu); 4608 4609 if (netif_running(netdev)) { 4610 adapter->flags |= IAVF_FLAG_RESET_NEEDED; 4611 iavf_reset_step(adapter); 4612 } 4613 4614 return 0; 4615} 4616 4617/** 4618 * iavf_disable_fdir - disable Flow Director and clear existing filters 4619 * @adapter: board private structure 4620 **/ 4621static void iavf_disable_fdir(struct iavf_adapter *adapter) 4622{ 4623 struct iavf_fdir_fltr *fdir, *fdirtmp; 4624 bool del_filters = false; 4625 4626 adapter->flags &= ~IAVF_FLAG_FDIR_ENABLED; 4627 4628 /* remove all Flow Director filters */ 4629 spin_lock_bh(&adapter->fdir_fltr_lock); 4630 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, 4631 list) { 4632 if (fdir->state == IAVF_FDIR_FLTR_ADD_REQUEST || 4633 fdir->state == IAVF_FDIR_FLTR_INACTIVE) { 4634 /* Delete filters not registered in PF */ 4635 list_del(&fdir->list); 4636 iavf_dec_fdir_active_fltr(adapter, fdir); 4637 kfree(fdir); 4638 } else if (fdir->state == IAVF_FDIR_FLTR_ADD_PENDING || 4639 fdir->state == IAVF_FDIR_FLTR_DIS_REQUEST || 4640 fdir->state == IAVF_FDIR_FLTR_ACTIVE) { 4641 /* Filters registered in PF, schedule their deletion */ 4642 fdir->state = IAVF_FDIR_FLTR_DEL_REQUEST; 4643 del_filters = true; 4644 } else if (fdir->state == IAVF_FDIR_FLTR_DIS_PENDING) { 4645 /* Request to delete filter already sent to PF, change 4646 * state to DEL_PENDING to delete filter after PF's 4647 * response, not set as INACTIVE 4648 */ 4649 fdir->state = IAVF_FDIR_FLTR_DEL_PENDING; 4650 } 4651 } 4652 spin_unlock_bh(&adapter->fdir_fltr_lock); 4653 4654 if (del_filters) { 4655 adapter->aq_required |= IAVF_FLAG_AQ_DEL_FDIR_FILTER; 4656 mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0); 4657 } 4658} 4659 4660#define NETIF_VLAN_OFFLOAD_FEATURES (NETIF_F_HW_VLAN_CTAG_RX | \ 4661 NETIF_F_HW_VLAN_CTAG_TX | \ 4662 NETIF_F_HW_VLAN_STAG_RX | \ 4663 NETIF_F_HW_VLAN_STAG_TX) 4664 4665/** 4666 * iavf_set_features - set the netdev feature flags 4667 * @netdev: ptr to the netdev being adjusted 4668 * @features: the feature set that the stack is suggesting 4669 * Note: expects to be called while under rtnl_lock() 4670 **/ 4671static int iavf_set_features(struct net_device *netdev, 4672 netdev_features_t features) 4673{ 4674 struct iavf_adapter *adapter = netdev_priv(netdev); 4675 4676 /* trigger update on any VLAN feature change */ 4677 if ((netdev->features & NETIF_VLAN_OFFLOAD_FEATURES) ^ 4678 (features & NETIF_VLAN_OFFLOAD_FEATURES)) 4679 iavf_set_vlan_offload_features(adapter, netdev->features, 4680 features); 4681 if (CRC_OFFLOAD_ALLOWED(adapter) && 4682 ((netdev->features & NETIF_F_RXFCS) ^ (features & NETIF_F_RXFCS))) 4683 iavf_schedule_reset(adapter, IAVF_FLAG_RESET_NEEDED); 4684 4685 if ((netdev->features & NETIF_F_NTUPLE) ^ (features & NETIF_F_NTUPLE)) { 4686 if (features & NETIF_F_NTUPLE) 4687 adapter->flags |= IAVF_FLAG_FDIR_ENABLED; 4688 else 4689 iavf_disable_fdir(adapter); 4690 } 4691 4692 return 0; 4693} 4694 4695/** 4696 * iavf_features_check - Validate encapsulated packet conforms to limits 4697 * @skb: skb buff 4698 * @dev: This physical port's netdev 4699 * @features: Offload features that the stack believes apply 4700 **/ 4701static netdev_features_t iavf_features_check(struct sk_buff *skb, 4702 struct net_device *dev, 4703 netdev_features_t features) 4704{ 4705 size_t len; 4706 4707 /* No point in doing any of this if neither checksum nor GSO are 4708 * being requested for this frame. We can rule out both by just 4709 * checking for CHECKSUM_PARTIAL 4710 */ 4711 if (skb->ip_summed != CHECKSUM_PARTIAL) 4712 return features; 4713 4714 /* We cannot support GSO if the MSS is going to be less than 4715 * 64 bytes. If it is then we need to drop support for GSO. 4716 */ 4717 if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64)) 4718 features &= ~NETIF_F_GSO_MASK; 4719 4720 /* MACLEN can support at most 63 words */ 4721 len = skb_network_offset(skb); 4722 if (len & ~(63 * 2)) 4723 goto out_err; 4724 4725 /* IPLEN and EIPLEN can support at most 127 dwords */ 4726 len = skb_network_header_len(skb); 4727 if (len & ~(127 * 4)) 4728 goto out_err; 4729 4730 if (skb->encapsulation) { 4731 /* L4TUNLEN can support 127 words */ 4732 len = skb_inner_network_header(skb) - skb_transport_header(skb); 4733 if (len & ~(127 * 2)) 4734 goto out_err; 4735 4736 /* IPLEN can support at most 127 dwords */ 4737 len = skb_inner_transport_header(skb) - 4738 skb_inner_network_header(skb); 4739 if (len & ~(127 * 4)) 4740 goto out_err; 4741 } 4742 4743 /* No need to validate L4LEN as TCP is the only protocol with a 4744 * flexible value and we support all possible values supported 4745 * by TCP, which is at most 15 dwords 4746 */ 4747 4748 return features; 4749out_err: 4750 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); 4751} 4752 4753/** 4754 * iavf_get_netdev_vlan_hw_features - get NETDEV VLAN features that can toggle on/off 4755 * @adapter: board private structure 4756 * 4757 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4758 * were negotiated determine the VLAN features that can be toggled on and off. 4759 **/ 4760static netdev_features_t 4761iavf_get_netdev_vlan_hw_features(struct iavf_adapter *adapter) 4762{ 4763 netdev_features_t hw_features = 0; 4764 4765 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4766 return hw_features; 4767 4768 /* Enable VLAN features if supported */ 4769 if (VLAN_ALLOWED(adapter)) { 4770 hw_features |= (NETIF_F_HW_VLAN_CTAG_TX | 4771 NETIF_F_HW_VLAN_CTAG_RX); 4772 } else if (VLAN_V2_ALLOWED(adapter)) { 4773 struct virtchnl_vlan_caps *vlan_v2_caps = 4774 &adapter->vlan_v2_caps; 4775 struct virtchnl_vlan_supported_caps *stripping_support = 4776 &vlan_v2_caps->offloads.stripping_support; 4777 struct virtchnl_vlan_supported_caps *insertion_support = 4778 &vlan_v2_caps->offloads.insertion_support; 4779 4780 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4781 stripping_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4782 if (stripping_support->outer & 4783 VIRTCHNL_VLAN_ETHERTYPE_8100) 4784 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4785 if (stripping_support->outer & 4786 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4787 hw_features |= NETIF_F_HW_VLAN_STAG_RX; 4788 } else if (stripping_support->inner != 4789 VIRTCHNL_VLAN_UNSUPPORTED && 4790 stripping_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4791 if (stripping_support->inner & 4792 VIRTCHNL_VLAN_ETHERTYPE_8100) 4793 hw_features |= NETIF_F_HW_VLAN_CTAG_RX; 4794 } 4795 4796 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED && 4797 insertion_support->outer & VIRTCHNL_VLAN_TOGGLE) { 4798 if (insertion_support->outer & 4799 VIRTCHNL_VLAN_ETHERTYPE_8100) 4800 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4801 if (insertion_support->outer & 4802 VIRTCHNL_VLAN_ETHERTYPE_88A8) 4803 hw_features |= NETIF_F_HW_VLAN_STAG_TX; 4804 } else if (insertion_support->inner && 4805 insertion_support->inner & VIRTCHNL_VLAN_TOGGLE) { 4806 if (insertion_support->inner & 4807 VIRTCHNL_VLAN_ETHERTYPE_8100) 4808 hw_features |= NETIF_F_HW_VLAN_CTAG_TX; 4809 } 4810 } 4811 4812 if (CRC_OFFLOAD_ALLOWED(adapter)) 4813 hw_features |= NETIF_F_RXFCS; 4814 4815 return hw_features; 4816} 4817 4818/** 4819 * iavf_get_netdev_vlan_features - get the enabled NETDEV VLAN fetures 4820 * @adapter: board private structure 4821 * 4822 * Depending on whether VIRTHCNL_VF_OFFLOAD_VLAN or VIRTCHNL_VF_OFFLOAD_VLAN_V2 4823 * were negotiated determine the VLAN features that are enabled by default. 4824 **/ 4825static netdev_features_t 4826iavf_get_netdev_vlan_features(struct iavf_adapter *adapter) 4827{ 4828 netdev_features_t features = 0; 4829 4830 if (!adapter->vf_res || !adapter->vf_res->vf_cap_flags) 4831 return features; 4832 4833 if (VLAN_ALLOWED(adapter)) { 4834 features |= NETIF_F_HW_VLAN_CTAG_FILTER | 4835 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX; 4836 } else if (VLAN_V2_ALLOWED(adapter)) { 4837 struct virtchnl_vlan_caps *vlan_v2_caps = 4838 &adapter->vlan_v2_caps; 4839 struct virtchnl_vlan_supported_caps *filtering_support = 4840 &vlan_v2_caps->filtering.filtering_support; 4841 struct virtchnl_vlan_supported_caps *stripping_support = 4842 &vlan_v2_caps->offloads.stripping_support; 4843 struct virtchnl_vlan_supported_caps *insertion_support = 4844 &vlan_v2_caps->offloads.insertion_support; 4845 u32 ethertype_init; 4846 4847 /* give priority to outer stripping and don't support both outer 4848 * and inner stripping 4849 */ 4850 ethertype_init = vlan_v2_caps->offloads.ethertype_init; 4851 if (stripping_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4852 if (stripping_support->outer & 4853 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4854 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4855 features |= NETIF_F_HW_VLAN_CTAG_RX; 4856 else if (stripping_support->outer & 4857 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4858 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4859 features |= NETIF_F_HW_VLAN_STAG_RX; 4860 } else if (stripping_support->inner != 4861 VIRTCHNL_VLAN_UNSUPPORTED) { 4862 if (stripping_support->inner & 4863 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4864 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4865 features |= NETIF_F_HW_VLAN_CTAG_RX; 4866 } 4867 4868 /* give priority to outer insertion and don't support both outer 4869 * and inner insertion 4870 */ 4871 if (insertion_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4872 if (insertion_support->outer & 4873 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4874 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4875 features |= NETIF_F_HW_VLAN_CTAG_TX; 4876 else if (insertion_support->outer & 4877 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4878 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4879 features |= NETIF_F_HW_VLAN_STAG_TX; 4880 } else if (insertion_support->inner != 4881 VIRTCHNL_VLAN_UNSUPPORTED) { 4882 if (insertion_support->inner & 4883 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4884 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4885 features |= NETIF_F_HW_VLAN_CTAG_TX; 4886 } 4887 4888 /* give priority to outer filtering and don't bother if both 4889 * outer and inner filtering are enabled 4890 */ 4891 ethertype_init = vlan_v2_caps->filtering.ethertype_init; 4892 if (filtering_support->outer != VIRTCHNL_VLAN_UNSUPPORTED) { 4893 if (filtering_support->outer & 4894 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4895 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4896 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4897 if (filtering_support->outer & 4898 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4899 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4900 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4901 } else if (filtering_support->inner != 4902 VIRTCHNL_VLAN_UNSUPPORTED) { 4903 if (filtering_support->inner & 4904 VIRTCHNL_VLAN_ETHERTYPE_8100 && 4905 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_8100) 4906 features |= NETIF_F_HW_VLAN_CTAG_FILTER; 4907 if (filtering_support->inner & 4908 VIRTCHNL_VLAN_ETHERTYPE_88A8 && 4909 ethertype_init & VIRTCHNL_VLAN_ETHERTYPE_88A8) 4910 features |= NETIF_F_HW_VLAN_STAG_FILTER; 4911 } 4912 } 4913 4914 return features; 4915} 4916 4917#define IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested, allowed, feature_bit) \ 4918 (!(((requested) & (feature_bit)) && \ 4919 !((allowed) & (feature_bit)))) 4920 4921/** 4922 * iavf_fix_netdev_vlan_features - fix NETDEV VLAN features based on support 4923 * @adapter: board private structure 4924 * @requested_features: stack requested NETDEV features 4925 **/ 4926static netdev_features_t 4927iavf_fix_netdev_vlan_features(struct iavf_adapter *adapter, 4928 netdev_features_t requested_features) 4929{ 4930 netdev_features_t allowed_features; 4931 4932 allowed_features = iavf_get_netdev_vlan_hw_features(adapter) | 4933 iavf_get_netdev_vlan_features(adapter); 4934 4935 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4936 allowed_features, 4937 NETIF_F_HW_VLAN_CTAG_TX)) 4938 requested_features &= ~NETIF_F_HW_VLAN_CTAG_TX; 4939 4940 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4941 allowed_features, 4942 NETIF_F_HW_VLAN_CTAG_RX)) 4943 requested_features &= ~NETIF_F_HW_VLAN_CTAG_RX; 4944 4945 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4946 allowed_features, 4947 NETIF_F_HW_VLAN_STAG_TX)) 4948 requested_features &= ~NETIF_F_HW_VLAN_STAG_TX; 4949 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4950 allowed_features, 4951 NETIF_F_HW_VLAN_STAG_RX)) 4952 requested_features &= ~NETIF_F_HW_VLAN_STAG_RX; 4953 4954 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4955 allowed_features, 4956 NETIF_F_HW_VLAN_CTAG_FILTER)) 4957 requested_features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4958 4959 if (!IAVF_NETDEV_VLAN_FEATURE_ALLOWED(requested_features, 4960 allowed_features, 4961 NETIF_F_HW_VLAN_STAG_FILTER)) 4962 requested_features &= ~NETIF_F_HW_VLAN_STAG_FILTER; 4963 4964 if ((requested_features & 4965 (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX)) && 4966 (requested_features & 4967 (NETIF_F_HW_VLAN_STAG_RX | NETIF_F_HW_VLAN_STAG_TX)) && 4968 adapter->vlan_v2_caps.offloads.ethertype_match == 4969 VIRTCHNL_ETHERTYPE_STRIPPING_MATCHES_INSERTION) { 4970 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"); 4971 requested_features &= ~(NETIF_F_HW_VLAN_STAG_RX | 4972 NETIF_F_HW_VLAN_STAG_TX); 4973 } 4974 4975 return requested_features; 4976} 4977 4978/** 4979 * iavf_fix_strip_features - fix NETDEV CRC and VLAN strip features 4980 * @adapter: board private structure 4981 * @requested_features: stack requested NETDEV features 4982 * 4983 * Returns fixed-up features bits 4984 **/ 4985static netdev_features_t 4986iavf_fix_strip_features(struct iavf_adapter *adapter, 4987 netdev_features_t requested_features) 4988{ 4989 struct net_device *netdev = adapter->netdev; 4990 bool crc_offload_req, is_vlan_strip; 4991 netdev_features_t vlan_strip; 4992 int num_non_zero_vlan; 4993 4994 crc_offload_req = CRC_OFFLOAD_ALLOWED(adapter) && 4995 (requested_features & NETIF_F_RXFCS); 4996 num_non_zero_vlan = iavf_get_num_vlans_added(adapter); 4997 vlan_strip = (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_STAG_RX); 4998 is_vlan_strip = requested_features & vlan_strip; 4999 5000 if (!crc_offload_req) 5001 return requested_features; 5002 5003 if (!num_non_zero_vlan && (netdev->features & vlan_strip) && 5004 !(netdev->features & NETIF_F_RXFCS) && is_vlan_strip) { 5005 requested_features &= ~vlan_strip; 5006 netdev_info(netdev, "Disabling VLAN stripping as FCS/CRC stripping is also disabled and there is no VLAN configured\n"); 5007 return requested_features; 5008 } 5009 5010 if ((netdev->features & NETIF_F_RXFCS) && is_vlan_strip) { 5011 requested_features &= ~vlan_strip; 5012 if (!(netdev->features & vlan_strip)) 5013 netdev_info(netdev, "To enable VLAN stripping, first need to enable FCS/CRC stripping"); 5014 5015 return requested_features; 5016 } 5017 5018 if (num_non_zero_vlan && is_vlan_strip && 5019 !(netdev->features & NETIF_F_RXFCS)) { 5020 requested_features &= ~NETIF_F_RXFCS; 5021 netdev_info(netdev, "To disable FCS/CRC stripping, first need to disable VLAN stripping"); 5022 } 5023 5024 return requested_features; 5025} 5026 5027/** 5028 * iavf_fix_features - fix up the netdev feature bits 5029 * @netdev: our net device 5030 * @features: desired feature bits 5031 * 5032 * Returns fixed-up features bits 5033 **/ 5034static netdev_features_t iavf_fix_features(struct net_device *netdev, 5035 netdev_features_t features) 5036{ 5037 struct iavf_adapter *adapter = netdev_priv(netdev); 5038 5039 features = iavf_fix_netdev_vlan_features(adapter, features); 5040 5041 if (!FDIR_FLTR_SUPPORT(adapter)) 5042 features &= ~NETIF_F_NTUPLE; 5043 5044 return iavf_fix_strip_features(adapter, features); 5045} 5046 5047static int iavf_hwstamp_get(struct net_device *netdev, 5048 struct kernel_hwtstamp_config *config) 5049{ 5050 struct iavf_adapter *adapter = netdev_priv(netdev); 5051 5052 *config = adapter->ptp.hwtstamp_config; 5053 5054 return 0; 5055} 5056 5057static int iavf_hwstamp_set(struct net_device *netdev, 5058 struct kernel_hwtstamp_config *config, 5059 struct netlink_ext_ack *extack) 5060{ 5061 struct iavf_adapter *adapter = netdev_priv(netdev); 5062 5063 return iavf_ptp_set_ts_config(adapter, config, extack); 5064} 5065 5066static int 5067iavf_verify_shaper(struct net_shaper_binding *binding, 5068 const struct net_shaper *shaper, 5069 struct netlink_ext_ack *extack) 5070{ 5071 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5072 u64 vf_max; 5073 5074 if (shaper->handle.scope == NET_SHAPER_SCOPE_QUEUE) { 5075 vf_max = adapter->qos_caps->cap[0].shaper.peak; 5076 if (vf_max && shaper->bw_max > vf_max) { 5077 NL_SET_ERR_MSG_FMT(extack, "Max rate (%llu) of queue %d can't exceed max TX rate of VF (%llu kbps)", 5078 shaper->bw_max, shaper->handle.id, 5079 vf_max); 5080 return -EINVAL; 5081 } 5082 } 5083 return 0; 5084} 5085 5086static int 5087iavf_shaper_set(struct net_shaper_binding *binding, 5088 const struct net_shaper *shaper, 5089 struct netlink_ext_ack *extack) 5090{ 5091 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5092 const struct net_shaper_handle *handle = &shaper->handle; 5093 struct iavf_ring *tx_ring; 5094 int ret; 5095 5096 netdev_assert_locked(adapter->netdev); 5097 5098 if (handle->id >= adapter->num_active_queues) 5099 return 0; 5100 5101 ret = iavf_verify_shaper(binding, shaper, extack); 5102 if (ret) 5103 return ret; 5104 5105 tx_ring = &adapter->tx_rings[handle->id]; 5106 5107 tx_ring->q_shaper.bw_min = div_u64(shaper->bw_min, 1000); 5108 tx_ring->q_shaper.bw_max = div_u64(shaper->bw_max, 1000); 5109 tx_ring->q_shaper_update = true; 5110 5111 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 5112 5113 return 0; 5114} 5115 5116static int iavf_shaper_del(struct net_shaper_binding *binding, 5117 const struct net_shaper_handle *handle, 5118 struct netlink_ext_ack *extack) 5119{ 5120 struct iavf_adapter *adapter = netdev_priv(binding->netdev); 5121 struct iavf_ring *tx_ring; 5122 5123 netdev_assert_locked(adapter->netdev); 5124 5125 if (handle->id >= adapter->num_active_queues) 5126 return 0; 5127 5128 tx_ring = &adapter->tx_rings[handle->id]; 5129 tx_ring->q_shaper.bw_min = 0; 5130 tx_ring->q_shaper.bw_max = 0; 5131 tx_ring->q_shaper_update = true; 5132 5133 adapter->aq_required |= IAVF_FLAG_AQ_CONFIGURE_QUEUES_BW; 5134 5135 return 0; 5136} 5137 5138static void iavf_shaper_cap(struct net_shaper_binding *binding, 5139 enum net_shaper_scope scope, 5140 unsigned long *flags) 5141{ 5142 if (scope != NET_SHAPER_SCOPE_QUEUE) 5143 return; 5144 5145 *flags = BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MIN) | 5146 BIT(NET_SHAPER_A_CAPS_SUPPORT_BW_MAX) | 5147 BIT(NET_SHAPER_A_CAPS_SUPPORT_METRIC_BPS); 5148} 5149 5150static const struct net_shaper_ops iavf_shaper_ops = { 5151 .set = iavf_shaper_set, 5152 .delete = iavf_shaper_del, 5153 .capabilities = iavf_shaper_cap, 5154}; 5155 5156static const struct net_device_ops iavf_netdev_ops = { 5157 .ndo_open = iavf_open, 5158 .ndo_stop = iavf_close, 5159 .ndo_start_xmit = iavf_xmit_frame, 5160 .ndo_set_rx_mode = iavf_set_rx_mode, 5161 .ndo_validate_addr = eth_validate_addr, 5162 .ndo_set_mac_address = iavf_set_mac, 5163 .ndo_change_mtu = iavf_change_mtu, 5164 .ndo_tx_timeout = iavf_tx_timeout, 5165 .ndo_vlan_rx_add_vid = iavf_vlan_rx_add_vid, 5166 .ndo_vlan_rx_kill_vid = iavf_vlan_rx_kill_vid, 5167 .ndo_features_check = iavf_features_check, 5168 .ndo_fix_features = iavf_fix_features, 5169 .ndo_set_features = iavf_set_features, 5170 .ndo_setup_tc = iavf_setup_tc, 5171 .net_shaper_ops = &iavf_shaper_ops, 5172 .ndo_hwtstamp_get = iavf_hwstamp_get, 5173 .ndo_hwtstamp_set = iavf_hwstamp_set, 5174}; 5175 5176/** 5177 * iavf_check_reset_complete - check that VF reset is complete 5178 * @hw: pointer to hw struct 5179 * 5180 * Returns 0 if device is ready to use, or -EBUSY if it's in reset. 5181 **/ 5182static int iavf_check_reset_complete(struct iavf_hw *hw) 5183{ 5184 u32 rstat; 5185 int i; 5186 5187 for (i = 0; i < IAVF_RESET_WAIT_COMPLETE_COUNT; i++) { 5188 rstat = rd32(hw, IAVF_VFGEN_RSTAT) & 5189 IAVF_VFGEN_RSTAT_VFR_STATE_MASK; 5190 if ((rstat == VIRTCHNL_VFR_VFACTIVE) || 5191 (rstat == VIRTCHNL_VFR_COMPLETED)) 5192 return 0; 5193 msleep(IAVF_RESET_WAIT_MS); 5194 } 5195 return -EBUSY; 5196} 5197 5198/** 5199 * iavf_process_config - Process the config information we got from the PF 5200 * @adapter: board private structure 5201 * 5202 * Verify that we have a valid config struct, and set up our netdev features 5203 * and our VSI struct. 5204 **/ 5205int iavf_process_config(struct iavf_adapter *adapter) 5206{ 5207 struct virtchnl_vf_resource *vfres = adapter->vf_res; 5208 netdev_features_t hw_vlan_features, vlan_features; 5209 struct net_device *netdev = adapter->netdev; 5210 netdev_features_t hw_enc_features; 5211 netdev_features_t hw_features; 5212 5213 hw_enc_features = NETIF_F_SG | 5214 NETIF_F_IP_CSUM | 5215 NETIF_F_IPV6_CSUM | 5216 NETIF_F_HIGHDMA | 5217 NETIF_F_SOFT_FEATURES | 5218 NETIF_F_TSO | 5219 NETIF_F_TSO_ECN | 5220 NETIF_F_TSO6 | 5221 NETIF_F_SCTP_CRC | 5222 NETIF_F_RXHASH | 5223 NETIF_F_RXCSUM | 5224 0; 5225 5226 /* advertise to stack only if offloads for encapsulated packets is 5227 * supported 5228 */ 5229 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ENCAP) { 5230 hw_enc_features |= NETIF_F_GSO_UDP_TUNNEL | 5231 NETIF_F_GSO_GRE | 5232 NETIF_F_GSO_GRE_CSUM | 5233 NETIF_F_GSO_IPXIP4 | 5234 NETIF_F_GSO_IPXIP6 | 5235 NETIF_F_GSO_UDP_TUNNEL_CSUM | 5236 NETIF_F_GSO_PARTIAL | 5237 0; 5238 5239 if (!(vfres->vf_cap_flags & 5240 VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM)) 5241 netdev->gso_partial_features |= 5242 NETIF_F_GSO_UDP_TUNNEL_CSUM; 5243 5244 netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM; 5245 netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID; 5246 netdev->hw_enc_features |= hw_enc_features; 5247 } 5248 /* record features VLANs can make use of */ 5249 netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID; 5250 5251 /* Write features and hw_features separately to avoid polluting 5252 * with, or dropping, features that are set when we registered. 5253 */ 5254 hw_features = hw_enc_features; 5255 5256 /* get HW VLAN features that can be toggled */ 5257 hw_vlan_features = iavf_get_netdev_vlan_hw_features(adapter); 5258 5259 /* Enable HW TC offload if ADQ or tc U32 is supported */ 5260 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_ADQ || 5261 TC_U32_SUPPORT(adapter)) 5262 hw_features |= NETIF_F_HW_TC; 5263 5264 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_USO) 5265 hw_features |= NETIF_F_GSO_UDP_L4; 5266 5267 netdev->hw_features |= hw_features | hw_vlan_features; 5268 vlan_features = iavf_get_netdev_vlan_features(adapter); 5269 5270 netdev->features |= hw_features | vlan_features; 5271 5272 if (vfres->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_VLAN) 5273 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 5274 5275 if (FDIR_FLTR_SUPPORT(adapter)) { 5276 netdev->hw_features |= NETIF_F_NTUPLE; 5277 netdev->features |= NETIF_F_NTUPLE; 5278 adapter->flags |= IAVF_FLAG_FDIR_ENABLED; 5279 } 5280 5281 netdev->priv_flags |= IFF_UNICAST_FLT; 5282 5283 /* Do not turn on offloads when they are requested to be turned off. 5284 * TSO needs minimum 576 bytes to work correctly. 5285 */ 5286 if (netdev->wanted_features) { 5287 if (!(netdev->wanted_features & NETIF_F_TSO) || 5288 netdev->mtu < 576) 5289 netdev->features &= ~NETIF_F_TSO; 5290 if (!(netdev->wanted_features & NETIF_F_TSO6) || 5291 netdev->mtu < 576) 5292 netdev->features &= ~NETIF_F_TSO6; 5293 if (!(netdev->wanted_features & NETIF_F_TSO_ECN)) 5294 netdev->features &= ~NETIF_F_TSO_ECN; 5295 if (!(netdev->wanted_features & NETIF_F_GRO)) 5296 netdev->features &= ~NETIF_F_GRO; 5297 if (!(netdev->wanted_features & NETIF_F_GSO)) 5298 netdev->features &= ~NETIF_F_GSO; 5299 } 5300 5301 return 0; 5302} 5303 5304/** 5305 * iavf_probe - Device Initialization Routine 5306 * @pdev: PCI device information struct 5307 * @ent: entry in iavf_pci_tbl 5308 * 5309 * Returns 0 on success, negative on failure 5310 * 5311 * iavf_probe initializes an adapter identified by a pci_dev structure. 5312 * The OS initialization, configuring of the adapter private structure, 5313 * and a hardware reset occur. 5314 **/ 5315static int iavf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 5316{ 5317 struct net_device *netdev; 5318 struct iavf_adapter *adapter = NULL; 5319 struct iavf_hw *hw = NULL; 5320 int err, len; 5321 5322 err = pci_enable_device(pdev); 5323 if (err) 5324 return err; 5325 5326 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 5327 if (err) { 5328 dev_err(&pdev->dev, 5329 "DMA configuration failed: 0x%x\n", err); 5330 goto err_dma; 5331 } 5332 5333 err = pci_request_regions(pdev, iavf_driver_name); 5334 if (err) { 5335 dev_err(&pdev->dev, 5336 "pci_request_regions failed 0x%x\n", err); 5337 goto err_pci_reg; 5338 } 5339 5340 pci_set_master(pdev); 5341 5342 netdev = alloc_etherdev_mq(sizeof(struct iavf_adapter), 5343 IAVF_MAX_REQ_QUEUES); 5344 if (!netdev) { 5345 err = -ENOMEM; 5346 goto err_alloc_etherdev; 5347 } 5348 5349 netif_set_affinity_auto(netdev); 5350 SET_NETDEV_DEV(netdev, &pdev->dev); 5351 5352 pci_set_drvdata(pdev, netdev); 5353 adapter = netdev_priv(netdev); 5354 5355 adapter->netdev = netdev; 5356 adapter->pdev = pdev; 5357 5358 hw = &adapter->hw; 5359 hw->back = adapter; 5360 5361 adapter->wq = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, 5362 iavf_driver_name); 5363 if (!adapter->wq) { 5364 err = -ENOMEM; 5365 goto err_alloc_wq; 5366 } 5367 5368 adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1; 5369 iavf_change_state(adapter, __IAVF_STARTUP); 5370 5371 /* Call save state here because it relies on the adapter struct. */ 5372 pci_save_state(pdev); 5373 5374 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 5375 pci_resource_len(pdev, 0)); 5376 if (!hw->hw_addr) { 5377 err = -EIO; 5378 goto err_ioremap; 5379 } 5380 hw->vendor_id = pdev->vendor; 5381 hw->device_id = pdev->device; 5382 pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); 5383 hw->subsystem_vendor_id = pdev->subsystem_vendor; 5384 hw->subsystem_device_id = pdev->subsystem_device; 5385 hw->bus.device = PCI_SLOT(pdev->devfn); 5386 hw->bus.func = PCI_FUNC(pdev->devfn); 5387 hw->bus.bus_id = pdev->bus->number; 5388 5389 len = struct_size(adapter->qos_caps, cap, IAVF_MAX_QOS_TC_NUM); 5390 adapter->qos_caps = kzalloc(len, GFP_KERNEL); 5391 if (!adapter->qos_caps) { 5392 err = -ENOMEM; 5393 goto err_alloc_qos_cap; 5394 } 5395 5396 mutex_init(&hw->aq.asq_mutex); 5397 mutex_init(&hw->aq.arq_mutex); 5398 5399 spin_lock_init(&adapter->mac_vlan_list_lock); 5400 spin_lock_init(&adapter->cloud_filter_list_lock); 5401 spin_lock_init(&adapter->fdir_fltr_lock); 5402 spin_lock_init(&adapter->adv_rss_lock); 5403 spin_lock_init(&adapter->current_netdev_promisc_flags_lock); 5404 5405 INIT_LIST_HEAD(&adapter->mac_filter_list); 5406 INIT_LIST_HEAD(&adapter->vlan_filter_list); 5407 INIT_LIST_HEAD(&adapter->cloud_filter_list); 5408 INIT_LIST_HEAD(&adapter->fdir_list_head); 5409 INIT_LIST_HEAD(&adapter->adv_rss_list_head); 5410 5411 INIT_WORK(&adapter->reset_task, iavf_reset_task); 5412 INIT_WORK(&adapter->adminq_task, iavf_adminq_task); 5413 INIT_WORK(&adapter->finish_config, iavf_finish_config); 5414 INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task); 5415 5416 /* Setup the wait queue for indicating transition to down status */ 5417 init_waitqueue_head(&adapter->down_waitqueue); 5418 5419 /* Setup the wait queue for indicating virtchannel events */ 5420 init_waitqueue_head(&adapter->vc_waitqueue); 5421 5422 INIT_LIST_HEAD(&adapter->ptp.aq_cmds); 5423 init_waitqueue_head(&adapter->ptp.phc_time_waitqueue); 5424 mutex_init(&adapter->ptp.aq_cmd_lock); 5425 5426 queue_delayed_work(adapter->wq, &adapter->watchdog_task, 5427 msecs_to_jiffies(5 * (pdev->devfn & 0x07))); 5428 /* Initialization goes on in the work. Do not add more of it below. */ 5429 return 0; 5430 5431err_alloc_qos_cap: 5432 iounmap(hw->hw_addr); 5433err_ioremap: 5434 destroy_workqueue(adapter->wq); 5435err_alloc_wq: 5436 free_netdev(netdev); 5437err_alloc_etherdev: 5438 pci_release_regions(pdev); 5439err_pci_reg: 5440err_dma: 5441 pci_disable_device(pdev); 5442 return err; 5443} 5444 5445/** 5446 * iavf_suspend - Power management suspend routine 5447 * @dev_d: device info pointer 5448 * 5449 * Called when the system (VM) is entering sleep/suspend. 5450 **/ 5451static int iavf_suspend(struct device *dev_d) 5452{ 5453 struct net_device *netdev = dev_get_drvdata(dev_d); 5454 struct iavf_adapter *adapter = netdev_priv(netdev); 5455 bool running; 5456 5457 netif_device_detach(netdev); 5458 5459 running = netif_running(netdev); 5460 if (running) 5461 rtnl_lock(); 5462 netdev_lock(netdev); 5463 5464 if (running) 5465 iavf_down(adapter); 5466 5467 iavf_free_misc_irq(adapter); 5468 iavf_reset_interrupt_capability(adapter); 5469 5470 netdev_unlock(netdev); 5471 if (running) 5472 rtnl_unlock(); 5473 5474 return 0; 5475} 5476 5477/** 5478 * iavf_resume - Power management resume routine 5479 * @dev_d: device info pointer 5480 * 5481 * Called when the system (VM) is resumed from sleep/suspend. 5482 **/ 5483static int iavf_resume(struct device *dev_d) 5484{ 5485 struct pci_dev *pdev = to_pci_dev(dev_d); 5486 struct iavf_adapter *adapter; 5487 int err; 5488 5489 adapter = iavf_pdev_to_adapter(pdev); 5490 5491 pci_set_master(pdev); 5492 5493 rtnl_lock(); 5494 err = iavf_set_interrupt_capability(adapter); 5495 if (err) { 5496 rtnl_unlock(); 5497 dev_err(&pdev->dev, "Cannot enable MSI-X interrupts.\n"); 5498 return err; 5499 } 5500 err = iavf_request_misc_irq(adapter); 5501 rtnl_unlock(); 5502 if (err) { 5503 dev_err(&pdev->dev, "Cannot get interrupt vector.\n"); 5504 return err; 5505 } 5506 5507 queue_work(adapter->wq, &adapter->reset_task); 5508 5509 netif_device_attach(adapter->netdev); 5510 5511 return err; 5512} 5513 5514/** 5515 * iavf_remove - Device Removal Routine 5516 * @pdev: PCI device information struct 5517 * 5518 * iavf_remove is called by the PCI subsystem to alert the driver 5519 * that it should release a PCI device. The could be caused by a 5520 * Hot-Plug event, or because the driver is going to be removed from 5521 * memory. 5522 **/ 5523static void iavf_remove(struct pci_dev *pdev) 5524{ 5525 struct iavf_fdir_fltr *fdir, *fdirtmp; 5526 struct iavf_vlan_filter *vlf, *vlftmp; 5527 struct iavf_cloud_filter *cf, *cftmp; 5528 struct iavf_adv_rss *rss, *rsstmp; 5529 struct iavf_mac_filter *f, *ftmp; 5530 struct iavf_adapter *adapter; 5531 struct net_device *netdev; 5532 struct iavf_hw *hw; 5533 5534 /* Don't proceed with remove if netdev is already freed */ 5535 netdev = pci_get_drvdata(pdev); 5536 if (!netdev) 5537 return; 5538 5539 adapter = iavf_pdev_to_adapter(pdev); 5540 hw = &adapter->hw; 5541 5542 if (test_and_set_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) 5543 return; 5544 5545 /* Wait until port initialization is complete. 5546 * There are flows where register/unregister netdev may race. 5547 */ 5548 while (1) { 5549 netdev_lock(netdev); 5550 if (adapter->state == __IAVF_RUNNING || 5551 adapter->state == __IAVF_DOWN || 5552 adapter->state == __IAVF_INIT_FAILED) { 5553 netdev_unlock(netdev); 5554 break; 5555 } 5556 /* Simply return if we already went through iavf_shutdown */ 5557 if (adapter->state == __IAVF_REMOVE) { 5558 netdev_unlock(netdev); 5559 return; 5560 } 5561 5562 netdev_unlock(netdev); 5563 usleep_range(500, 1000); 5564 } 5565 cancel_delayed_work_sync(&adapter->watchdog_task); 5566 cancel_work_sync(&adapter->finish_config); 5567 5568 if (netdev->reg_state == NETREG_REGISTERED) 5569 unregister_netdev(netdev); 5570 5571 netdev_lock(netdev); 5572 dev_info(&adapter->pdev->dev, "Removing device\n"); 5573 iavf_change_state(adapter, __IAVF_REMOVE); 5574 5575 iavf_request_reset(adapter); 5576 msleep(50); 5577 /* If the FW isn't responding, kick it once, but only once. */ 5578 if (!iavf_asq_done(hw)) { 5579 iavf_request_reset(adapter); 5580 msleep(50); 5581 } 5582 5583 iavf_ptp_release(adapter); 5584 5585 iavf_misc_irq_disable(adapter); 5586 /* Shut down all the garbage mashers on the detention level */ 5587 netdev_unlock(netdev); 5588 cancel_work_sync(&adapter->reset_task); 5589 cancel_delayed_work_sync(&adapter->watchdog_task); 5590 cancel_work_sync(&adapter->adminq_task); 5591 netdev_lock(netdev); 5592 5593 adapter->aq_required = 0; 5594 adapter->flags &= ~IAVF_FLAG_REINIT_ITR_NEEDED; 5595 5596 iavf_free_all_tx_resources(adapter); 5597 iavf_free_all_rx_resources(adapter); 5598 iavf_free_misc_irq(adapter); 5599 iavf_free_interrupt_scheme(adapter); 5600 5601 iavf_free_rss(adapter); 5602 5603 if (hw->aq.asq.count) 5604 iavf_shutdown_adminq(hw); 5605 5606 /* destroy the locks only once, here */ 5607 mutex_destroy(&hw->aq.arq_mutex); 5608 mutex_destroy(&hw->aq.asq_mutex); 5609 netdev_unlock(netdev); 5610 5611 iounmap(hw->hw_addr); 5612 pci_release_regions(pdev); 5613 kfree(adapter->vf_res); 5614 spin_lock_bh(&adapter->mac_vlan_list_lock); 5615 /* If we got removed before an up/down sequence, we've got a filter 5616 * hanging out there that we need to get rid of. 5617 */ 5618 list_for_each_entry_safe(f, ftmp, &adapter->mac_filter_list, list) { 5619 list_del(&f->list); 5620 kfree(f); 5621 } 5622 list_for_each_entry_safe(vlf, vlftmp, &adapter->vlan_filter_list, 5623 list) { 5624 list_del(&vlf->list); 5625 kfree(vlf); 5626 } 5627 5628 spin_unlock_bh(&adapter->mac_vlan_list_lock); 5629 5630 spin_lock_bh(&adapter->cloud_filter_list_lock); 5631 list_for_each_entry_safe(cf, cftmp, &adapter->cloud_filter_list, list) { 5632 list_del(&cf->list); 5633 kfree(cf); 5634 } 5635 spin_unlock_bh(&adapter->cloud_filter_list_lock); 5636 5637 spin_lock_bh(&adapter->fdir_fltr_lock); 5638 list_for_each_entry_safe(fdir, fdirtmp, &adapter->fdir_list_head, list) { 5639 list_del(&fdir->list); 5640 kfree(fdir); 5641 } 5642 spin_unlock_bh(&adapter->fdir_fltr_lock); 5643 5644 spin_lock_bh(&adapter->adv_rss_lock); 5645 list_for_each_entry_safe(rss, rsstmp, &adapter->adv_rss_list_head, 5646 list) { 5647 list_del(&rss->list); 5648 kfree(rss); 5649 } 5650 spin_unlock_bh(&adapter->adv_rss_lock); 5651 5652 destroy_workqueue(adapter->wq); 5653 5654 pci_set_drvdata(pdev, NULL); 5655 5656 free_netdev(netdev); 5657 5658 pci_disable_device(pdev); 5659} 5660 5661/** 5662 * iavf_shutdown - Shutdown the device in preparation for a reboot 5663 * @pdev: pci device structure 5664 **/ 5665static void iavf_shutdown(struct pci_dev *pdev) 5666{ 5667 iavf_remove(pdev); 5668 5669 if (system_state == SYSTEM_POWER_OFF) 5670 pci_set_power_state(pdev, PCI_D3hot); 5671} 5672 5673static DEFINE_SIMPLE_DEV_PM_OPS(iavf_pm_ops, iavf_suspend, iavf_resume); 5674 5675static struct pci_driver iavf_driver = { 5676 .name = iavf_driver_name, 5677 .id_table = iavf_pci_tbl, 5678 .probe = iavf_probe, 5679 .remove = iavf_remove, 5680 .driver.pm = pm_sleep_ptr(&iavf_pm_ops), 5681 .shutdown = iavf_shutdown, 5682}; 5683 5684/** 5685 * iavf_init_module - Driver Registration Routine 5686 * 5687 * iavf_init_module is the first routine called when the driver is 5688 * loaded. All it does is register with the PCI subsystem. 5689 **/ 5690static int __init iavf_init_module(void) 5691{ 5692 pr_info("iavf: %s\n", iavf_driver_string); 5693 5694 pr_info("%s\n", iavf_copyright); 5695 5696 return pci_register_driver(&iavf_driver); 5697} 5698 5699module_init(iavf_init_module); 5700 5701/** 5702 * iavf_exit_module - Driver Exit Cleanup Routine 5703 * 5704 * iavf_exit_module is called just before the driver is removed 5705 * from memory. 5706 **/ 5707static void __exit iavf_exit_module(void) 5708{ 5709 pci_unregister_driver(&iavf_driver); 5710} 5711 5712module_exit(iavf_exit_module); 5713 5714/* iavf_main.c */
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