1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2015 6WIND S.A. 3 * Copyright 2020 Mellanox Technologies, Ltd 4 */ 5 6 #include <stddef.h> 7 #include <unistd.h> 8 #include <string.h> 9 #include <stdint.h> 10 #include <stdlib.h> 11 #include <errno.h> 12 #include <net/if.h> 13 #include <linux/rtnetlink.h> 14 #include <linux/sockios.h> 15 #include <linux/ethtool.h> 16 #include <fcntl.h> 17 18 #include <rte_malloc.h> 19 #include <rte_ethdev_driver.h> 20 #include <rte_ethdev_pci.h> 21 #include <rte_pci.h> 22 #include <rte_bus_pci.h> 23 #include <rte_common.h> 24 #include <rte_kvargs.h> 25 #include <rte_rwlock.h> 26 #include <rte_spinlock.h> 27 #include <rte_string_fns.h> 28 #include <rte_alarm.h> 29 #include <rte_eal_paging.h> 30 31 #include <mlx5_glue.h> 32 #include <mlx5_devx_cmds.h> 33 #include <mlx5_common.h> 34 #include <mlx5_common_mp.h> 35 #include <mlx5_common_mr.h> 36 #include <mlx5_malloc.h> 37 38 #include "mlx5_defs.h" 39 #include "mlx5.h" 40 #include "mlx5_common_os.h" 41 #include "mlx5_utils.h" 42 #include "mlx5_rxtx.h" 43 #include "mlx5_autoconf.h" 44 #include "mlx5_mr.h" 45 #include "mlx5_flow.h" 46 #include "rte_pmd_mlx5.h" 47 #include "mlx5_verbs.h" 48 #include "mlx5_nl.h" 49 #include "mlx5_devx.h" 50 51 #define MLX5_TAGS_HLIST_ARRAY_SIZE 8192 52 53 #ifndef HAVE_IBV_MLX5_MOD_MPW 54 #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2) 55 #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3) 56 #endif 57 58 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP 59 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4) 60 #endif 61 62 static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data"; 63 64 /* Spinlock for mlx5_shared_data allocation. */ 65 static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER; 66 67 /* Process local data for secondary processes. */ 68 static struct mlx5_local_data mlx5_local_data; 69 70 /** 71 * Set the completion channel file descriptor interrupt as non-blocking. 72 * 73 * @param[in] rxq_obj 74 * Pointer to RQ channel object, which includes the channel fd 75 * 76 * @param[out] fd 77 * The file descriptor (representing the intetrrupt) used in this channel. 78 * 79 * @return 80 * 0 on successfully setting the fd to non-blocking, non-zero otherwise. 81 */ 82 int 83 mlx5_os_set_nonblock_channel_fd(int fd) 84 { 85 int flags; 86 87 flags = fcntl(fd, F_GETFL); 88 return fcntl(fd, F_SETFL, flags | O_NONBLOCK); 89 } 90 91 /** 92 * Get mlx5 device attributes. The glue function query_device_ex() is called 93 * with out parameter of type 'struct ibv_device_attr_ex *'. Then fill in mlx5 94 * device attributes from the glue out parameter. 95 * 96 * @param dev 97 * Pointer to ibv context. 98 * 99 * @param device_attr 100 * Pointer to mlx5 device attributes. 101 * 102 * @return 103 * 0 on success, non zero error number otherwise 104 */ 105 int 106 mlx5_os_get_dev_attr(void *ctx, struct mlx5_dev_attr *device_attr) 107 { 108 int err; 109 struct ibv_device_attr_ex attr_ex; 110 memset(device_attr, 0, sizeof(*device_attr)); 111 err = mlx5_glue->query_device_ex(ctx, NULL, &attr_ex); 112 if (err) 113 return err; 114 115 device_attr->device_cap_flags_ex = attr_ex.device_cap_flags_ex; 116 device_attr->max_qp_wr = attr_ex.orig_attr.max_qp_wr; 117 device_attr->max_sge = attr_ex.orig_attr.max_sge; 118 device_attr->max_cq = attr_ex.orig_attr.max_cq; 119 device_attr->max_qp = attr_ex.orig_attr.max_qp; 120 device_attr->raw_packet_caps = attr_ex.raw_packet_caps; 121 device_attr->max_rwq_indirection_table_size = 122 attr_ex.rss_caps.max_rwq_indirection_table_size; 123 device_attr->max_tso = attr_ex.tso_caps.max_tso; 124 device_attr->tso_supported_qpts = attr_ex.tso_caps.supported_qpts; 125 126 struct mlx5dv_context dv_attr = { .comp_mask = 0 }; 127 err = mlx5_glue->dv_query_device(ctx, &dv_attr); 128 if (err) 129 return err; 130 131 device_attr->flags = dv_attr.flags; 132 device_attr->comp_mask = dv_attr.comp_mask; 133 #ifdef HAVE_IBV_MLX5_MOD_SWP 134 device_attr->sw_parsing_offloads = 135 dv_attr.sw_parsing_caps.sw_parsing_offloads; 136 #endif 137 device_attr->min_single_stride_log_num_of_bytes = 138 dv_attr.striding_rq_caps.min_single_stride_log_num_of_bytes; 139 device_attr->max_single_stride_log_num_of_bytes = 140 dv_attr.striding_rq_caps.max_single_stride_log_num_of_bytes; 141 device_attr->min_single_wqe_log_num_of_strides = 142 dv_attr.striding_rq_caps.min_single_wqe_log_num_of_strides; 143 device_attr->max_single_wqe_log_num_of_strides = 144 dv_attr.striding_rq_caps.max_single_wqe_log_num_of_strides; 145 device_attr->stride_supported_qpts = 146 dv_attr.striding_rq_caps.supported_qpts; 147 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT 148 device_attr->tunnel_offloads_caps = dv_attr.tunnel_offloads_caps; 149 #endif 150 151 return err; 152 } 153 154 /** 155 * Verbs callback to allocate a memory. This function should allocate the space 156 * according to the size provided residing inside a huge page. 157 * Please note that all allocation must respect the alignment from libmlx5 158 * (i.e. currently rte_mem_page_size()). 159 * 160 * @param[in] size 161 * The size in bytes of the memory to allocate. 162 * @param[in] data 163 * A pointer to the callback data. 164 * 165 * @return 166 * Allocated buffer, NULL otherwise and rte_errno is set. 167 */ 168 static void * 169 mlx5_alloc_verbs_buf(size_t size, void *data) 170 { 171 struct mlx5_priv *priv = data; 172 void *ret; 173 unsigned int socket = SOCKET_ID_ANY; 174 size_t alignment = rte_mem_page_size(); 175 if (alignment == (size_t)-1) { 176 DRV_LOG(ERR, "Failed to get mem page size"); 177 rte_errno = ENOMEM; 178 return NULL; 179 } 180 181 if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) { 182 const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj; 183 184 socket = ctrl->socket; 185 } else if (priv->verbs_alloc_ctx.type == 186 MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) { 187 const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj; 188 189 socket = ctrl->socket; 190 } 191 MLX5_ASSERT(data != NULL); 192 ret = mlx5_malloc(0, size, alignment, socket); 193 if (!ret && size) 194 rte_errno = ENOMEM; 195 return ret; 196 } 197 198 /** 199 * Verbs callback to free a memory. 200 * 201 * @param[in] ptr 202 * A pointer to the memory to free. 203 * @param[in] data 204 * A pointer to the callback data. 205 */ 206 static void 207 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused) 208 { 209 MLX5_ASSERT(data != NULL); 210 mlx5_free(ptr); 211 } 212 213 /** 214 * Initialize DR related data within private structure. 215 * Routine checks the reference counter and does actual 216 * resources creation/initialization only if counter is zero. 217 * 218 * @param[in] priv 219 * Pointer to the private device data structure. 220 * 221 * @return 222 * Zero on success, positive error code otherwise. 223 */ 224 static int 225 mlx5_alloc_shared_dr(struct mlx5_priv *priv) 226 { 227 struct mlx5_dev_ctx_shared *sh = priv->sh; 228 char s[MLX5_HLIST_NAMESIZE] __rte_unused; 229 int err; 230 231 MLX5_ASSERT(sh && sh->refcnt); 232 if (sh->refcnt > 1) 233 return 0; 234 err = mlx5_alloc_table_hash_list(priv); 235 if (err) 236 goto error; 237 /* The resources below are only valid with DV support. */ 238 #ifdef HAVE_IBV_FLOW_DV_SUPPORT 239 /* Create tags hash list table. */ 240 snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name); 241 sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE, 0, 242 MLX5_HLIST_WRITE_MOST, 243 flow_dv_tag_create_cb, NULL, 244 flow_dv_tag_remove_cb); 245 if (!sh->tag_table) { 246 DRV_LOG(ERR, "tags with hash creation failed."); 247 err = ENOMEM; 248 goto error; 249 } 250 sh->tag_table->ctx = sh; 251 snprintf(s, sizeof(s), "%s_hdr_modify", sh->ibdev_name); 252 sh->modify_cmds = mlx5_hlist_create(s, MLX5_FLOW_HDR_MODIFY_HTABLE_SZ, 253 0, MLX5_HLIST_WRITE_MOST | 254 MLX5_HLIST_DIRECT_KEY, 255 flow_dv_modify_create_cb, 256 flow_dv_modify_match_cb, 257 flow_dv_modify_remove_cb); 258 if (!sh->modify_cmds) { 259 DRV_LOG(ERR, "hdr modify hash creation failed"); 260 err = ENOMEM; 261 goto error; 262 } 263 sh->modify_cmds->ctx = sh; 264 snprintf(s, sizeof(s), "%s_encaps_decaps", sh->ibdev_name); 265 sh->encaps_decaps = mlx5_hlist_create(s, 266 MLX5_FLOW_ENCAP_DECAP_HTABLE_SZ, 267 0, MLX5_HLIST_DIRECT_KEY | 268 MLX5_HLIST_WRITE_MOST, 269 flow_dv_encap_decap_create_cb, 270 flow_dv_encap_decap_match_cb, 271 flow_dv_encap_decap_remove_cb); 272 if (!sh->encaps_decaps) { 273 DRV_LOG(ERR, "encap decap hash creation failed"); 274 err = ENOMEM; 275 goto error; 276 } 277 sh->encaps_decaps->ctx = sh; 278 #endif 279 #ifdef HAVE_MLX5DV_DR 280 void *domain; 281 282 /* Reference counter is zero, we should initialize structures. */ 283 domain = mlx5_glue->dr_create_domain(sh->ctx, 284 MLX5DV_DR_DOMAIN_TYPE_NIC_RX); 285 if (!domain) { 286 DRV_LOG(ERR, "ingress mlx5dv_dr_create_domain failed"); 287 err = errno; 288 goto error; 289 } 290 sh->rx_domain = domain; 291 domain = mlx5_glue->dr_create_domain(sh->ctx, 292 MLX5DV_DR_DOMAIN_TYPE_NIC_TX); 293 if (!domain) { 294 DRV_LOG(ERR, "egress mlx5dv_dr_create_domain failed"); 295 err = errno; 296 goto error; 297 } 298 pthread_mutex_init(&sh->dv_mutex, NULL); 299 sh->tx_domain = domain; 300 #ifdef HAVE_MLX5DV_DR_ESWITCH 301 if (priv->config.dv_esw_en) { 302 domain = mlx5_glue->dr_create_domain 303 (sh->ctx, MLX5DV_DR_DOMAIN_TYPE_FDB); 304 if (!domain) { 305 DRV_LOG(ERR, "FDB mlx5dv_dr_create_domain failed"); 306 err = errno; 307 goto error; 308 } 309 sh->fdb_domain = domain; 310 sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop(); 311 } 312 #endif 313 if (!sh->tunnel_hub) 314 err = mlx5_alloc_tunnel_hub(sh); 315 if (err) { 316 DRV_LOG(ERR, "mlx5_alloc_tunnel_hub failed err=%d", err); 317 goto error; 318 } 319 if (priv->config.reclaim_mode == MLX5_RCM_AGGR) { 320 mlx5_glue->dr_reclaim_domain_memory(sh->rx_domain, 1); 321 mlx5_glue->dr_reclaim_domain_memory(sh->tx_domain, 1); 322 if (sh->fdb_domain) 323 mlx5_glue->dr_reclaim_domain_memory(sh->fdb_domain, 1); 324 } 325 sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan(); 326 #endif /* HAVE_MLX5DV_DR */ 327 sh->default_miss_action = 328 mlx5_glue->dr_create_flow_action_default_miss(); 329 if (!sh->default_miss_action) 330 DRV_LOG(WARNING, "Default miss action is not supported."); 331 return 0; 332 error: 333 /* Rollback the created objects. */ 334 if (sh->rx_domain) { 335 mlx5_glue->dr_destroy_domain(sh->rx_domain); 336 sh->rx_domain = NULL; 337 } 338 if (sh->tx_domain) { 339 mlx5_glue->dr_destroy_domain(sh->tx_domain); 340 sh->tx_domain = NULL; 341 } 342 if (sh->fdb_domain) { 343 mlx5_glue->dr_destroy_domain(sh->fdb_domain); 344 sh->fdb_domain = NULL; 345 } 346 if (sh->esw_drop_action) { 347 mlx5_glue->destroy_flow_action(sh->esw_drop_action); 348 sh->esw_drop_action = NULL; 349 } 350 if (sh->pop_vlan_action) { 351 mlx5_glue->destroy_flow_action(sh->pop_vlan_action); 352 sh->pop_vlan_action = NULL; 353 } 354 if (sh->encaps_decaps) { 355 mlx5_hlist_destroy(sh->encaps_decaps); 356 sh->encaps_decaps = NULL; 357 } 358 if (sh->modify_cmds) { 359 mlx5_hlist_destroy(sh->modify_cmds); 360 sh->modify_cmds = NULL; 361 } 362 if (sh->tag_table) { 363 /* tags should be destroyed with flow before. */ 364 mlx5_hlist_destroy(sh->tag_table); 365 sh->tag_table = NULL; 366 } 367 if (sh->tunnel_hub) { 368 mlx5_release_tunnel_hub(sh, priv->dev_port); 369 sh->tunnel_hub = NULL; 370 } 371 mlx5_free_table_hash_list(priv); 372 return err; 373 } 374 375 /** 376 * Destroy DR related data within private structure. 377 * 378 * @param[in] priv 379 * Pointer to the private device data structure. 380 */ 381 void 382 mlx5_os_free_shared_dr(struct mlx5_priv *priv) 383 { 384 struct mlx5_dev_ctx_shared *sh = priv->sh; 385 386 MLX5_ASSERT(sh && sh->refcnt); 387 if (sh->refcnt > 1) 388 return; 389 #ifdef HAVE_MLX5DV_DR 390 if (sh->rx_domain) { 391 mlx5_glue->dr_destroy_domain(sh->rx_domain); 392 sh->rx_domain = NULL; 393 } 394 if (sh->tx_domain) { 395 mlx5_glue->dr_destroy_domain(sh->tx_domain); 396 sh->tx_domain = NULL; 397 } 398 #ifdef HAVE_MLX5DV_DR_ESWITCH 399 if (sh->fdb_domain) { 400 mlx5_glue->dr_destroy_domain(sh->fdb_domain); 401 sh->fdb_domain = NULL; 402 } 403 if (sh->esw_drop_action) { 404 mlx5_glue->destroy_flow_action(sh->esw_drop_action); 405 sh->esw_drop_action = NULL; 406 } 407 #endif 408 if (sh->pop_vlan_action) { 409 mlx5_glue->destroy_flow_action(sh->pop_vlan_action); 410 sh->pop_vlan_action = NULL; 411 } 412 pthread_mutex_destroy(&sh->dv_mutex); 413 #endif /* HAVE_MLX5DV_DR */ 414 if (sh->default_miss_action) 415 mlx5_glue->destroy_flow_action 416 (sh->default_miss_action); 417 if (sh->encaps_decaps) { 418 mlx5_hlist_destroy(sh->encaps_decaps); 419 sh->encaps_decaps = NULL; 420 } 421 if (sh->modify_cmds) { 422 mlx5_hlist_destroy(sh->modify_cmds); 423 sh->modify_cmds = NULL; 424 } 425 if (sh->tag_table) { 426 /* tags should be destroyed with flow before. */ 427 mlx5_hlist_destroy(sh->tag_table); 428 sh->tag_table = NULL; 429 } 430 if (sh->tunnel_hub) { 431 mlx5_release_tunnel_hub(sh, priv->dev_port); 432 sh->tunnel_hub = NULL; 433 } 434 mlx5_free_table_hash_list(priv); 435 } 436 437 /** 438 * Initialize shared data between primary and secondary process. 439 * 440 * A memzone is reserved by primary process and secondary processes attach to 441 * the memzone. 442 * 443 * @return 444 * 0 on success, a negative errno value otherwise and rte_errno is set. 445 */ 446 static int 447 mlx5_init_shared_data(void) 448 { 449 const struct rte_memzone *mz; 450 int ret = 0; 451 452 rte_spinlock_lock(&mlx5_shared_data_lock); 453 if (mlx5_shared_data == NULL) { 454 if (rte_eal_process_type() == RTE_PROC_PRIMARY) { 455 /* Allocate shared memory. */ 456 mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA, 457 sizeof(*mlx5_shared_data), 458 SOCKET_ID_ANY, 0); 459 if (mz == NULL) { 460 DRV_LOG(ERR, 461 "Cannot allocate mlx5 shared data"); 462 ret = -rte_errno; 463 goto error; 464 } 465 mlx5_shared_data = mz->addr; 466 memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data)); 467 rte_spinlock_init(&mlx5_shared_data->lock); 468 } else { 469 /* Lookup allocated shared memory. */ 470 mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA); 471 if (mz == NULL) { 472 DRV_LOG(ERR, 473 "Cannot attach mlx5 shared data"); 474 ret = -rte_errno; 475 goto error; 476 } 477 mlx5_shared_data = mz->addr; 478 memset(&mlx5_local_data, 0, sizeof(mlx5_local_data)); 479 } 480 } 481 error: 482 rte_spinlock_unlock(&mlx5_shared_data_lock); 483 return ret; 484 } 485 486 /** 487 * PMD global initialization. 488 * 489 * Independent from individual device, this function initializes global 490 * per-PMD data structures distinguishing primary and secondary processes. 491 * Hence, each initialization is called once per a process. 492 * 493 * @return 494 * 0 on success, a negative errno value otherwise and rte_errno is set. 495 */ 496 static int 497 mlx5_init_once(void) 498 { 499 struct mlx5_shared_data *sd; 500 struct mlx5_local_data *ld = &mlx5_local_data; 501 int ret = 0; 502 503 if (mlx5_init_shared_data()) 504 return -rte_errno; 505 sd = mlx5_shared_data; 506 MLX5_ASSERT(sd); 507 rte_spinlock_lock(&sd->lock); 508 switch (rte_eal_process_type()) { 509 case RTE_PROC_PRIMARY: 510 if (sd->init_done) 511 break; 512 LIST_INIT(&sd->mem_event_cb_list); 513 rte_rwlock_init(&sd->mem_event_rwlock); 514 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB", 515 mlx5_mr_mem_event_cb, NULL); 516 ret = mlx5_mp_init_primary(MLX5_MP_NAME, 517 mlx5_mp_os_primary_handle); 518 if (ret) 519 goto out; 520 sd->init_done = true; 521 break; 522 case RTE_PROC_SECONDARY: 523 if (ld->init_done) 524 break; 525 ret = mlx5_mp_init_secondary(MLX5_MP_NAME, 526 mlx5_mp_os_secondary_handle); 527 if (ret) 528 goto out; 529 ++sd->secondary_cnt; 530 ld->init_done = true; 531 break; 532 default: 533 break; 534 } 535 out: 536 rte_spinlock_unlock(&sd->lock); 537 return ret; 538 } 539 540 /** 541 * Create the Tx queue DevX/Verbs object. 542 * 543 * @param dev 544 * Pointer to Ethernet device. 545 * @param idx 546 * Queue index in DPDK Tx queue array. 547 * 548 * @return 549 * 0 on success, a negative errno value otherwise and rte_errno is set. 550 */ 551 static int 552 mlx5_os_txq_obj_new(struct rte_eth_dev *dev, uint16_t idx) 553 { 554 struct mlx5_priv *priv = dev->data->dev_private; 555 struct mlx5_txq_data *txq_data = (*priv->txqs)[idx]; 556 struct mlx5_txq_ctrl *txq_ctrl = 557 container_of(txq_data, struct mlx5_txq_ctrl, txq); 558 559 if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) 560 return mlx5_txq_devx_obj_new(dev, idx); 561 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET 562 if (!priv->config.dv_esw_en) 563 return mlx5_txq_devx_obj_new(dev, idx); 564 #endif 565 return mlx5_txq_ibv_obj_new(dev, idx); 566 } 567 568 /** 569 * Release an Tx DevX/verbs queue object. 570 * 571 * @param txq_obj 572 * DevX/Verbs Tx queue object. 573 */ 574 static void 575 mlx5_os_txq_obj_release(struct mlx5_txq_obj *txq_obj) 576 { 577 if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) { 578 mlx5_txq_devx_obj_release(txq_obj); 579 return; 580 } 581 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET 582 if (!txq_obj->txq_ctrl->priv->config.dv_esw_en) { 583 mlx5_txq_devx_obj_release(txq_obj); 584 return; 585 } 586 #endif 587 mlx5_txq_ibv_obj_release(txq_obj); 588 } 589 590 /** 591 * DV flow counter mode detect and config. 592 * 593 * @param dev 594 * Pointer to rte_eth_dev structure. 595 * 596 */ 597 static void 598 mlx5_flow_counter_mode_config(struct rte_eth_dev *dev __rte_unused) 599 { 600 #ifdef HAVE_IBV_FLOW_DV_SUPPORT 601 struct mlx5_priv *priv = dev->data->dev_private; 602 struct mlx5_dev_ctx_shared *sh = priv->sh; 603 bool fallback; 604 605 #ifndef HAVE_IBV_DEVX_ASYNC 606 fallback = true; 607 #else 608 fallback = false; 609 if (!priv->config.devx || !priv->config.dv_flow_en || 610 !priv->config.hca_attr.flow_counters_dump || 611 !(priv->config.hca_attr.flow_counter_bulk_alloc_bitmap & 0x4) || 612 (mlx5_flow_dv_discover_counter_offset_support(dev) == -ENOTSUP)) 613 fallback = true; 614 #endif 615 if (fallback) 616 DRV_LOG(INFO, "Use fall-back DV counter management. Flow " 617 "counter dump:%d, bulk_alloc_bitmap:0x%hhx.", 618 priv->config.hca_attr.flow_counters_dump, 619 priv->config.hca_attr.flow_counter_bulk_alloc_bitmap); 620 /* Initialize fallback mode only on the port initializes sh. */ 621 if (sh->refcnt == 1) 622 sh->cmng.counter_fallback = fallback; 623 else if (fallback != sh->cmng.counter_fallback) 624 DRV_LOG(WARNING, "Port %d in sh has different fallback mode " 625 "with others:%d.", PORT_ID(priv), fallback); 626 #endif 627 } 628 629 /** 630 * Spawn an Ethernet device from Verbs information. 631 * 632 * @param dpdk_dev 633 * Backing DPDK device. 634 * @param spawn 635 * Verbs device parameters (name, port, switch_info) to spawn. 636 * @param config 637 * Device configuration parameters. 638 * 639 * @return 640 * A valid Ethernet device object on success, NULL otherwise and rte_errno 641 * is set. The following errors are defined: 642 * 643 * EBUSY: device is not supposed to be spawned. 644 * EEXIST: device is already spawned 645 */ 646 static struct rte_eth_dev * 647 mlx5_dev_spawn(struct rte_device *dpdk_dev, 648 struct mlx5_dev_spawn_data *spawn, 649 struct mlx5_dev_config *config) 650 { 651 const struct mlx5_switch_info *switch_info = &spawn->info; 652 struct mlx5_dev_ctx_shared *sh = NULL; 653 struct ibv_port_attr port_attr; 654 struct mlx5dv_context dv_attr = { .comp_mask = 0 }; 655 struct rte_eth_dev *eth_dev = NULL; 656 struct mlx5_priv *priv = NULL; 657 int err = 0; 658 unsigned int hw_padding = 0; 659 unsigned int mps; 660 unsigned int cqe_comp; 661 unsigned int cqe_pad = 0; 662 unsigned int tunnel_en = 0; 663 unsigned int mpls_en = 0; 664 unsigned int swp = 0; 665 unsigned int mprq = 0; 666 unsigned int mprq_min_stride_size_n = 0; 667 unsigned int mprq_max_stride_size_n = 0; 668 unsigned int mprq_min_stride_num_n = 0; 669 unsigned int mprq_max_stride_num_n = 0; 670 struct rte_ether_addr mac; 671 char name[RTE_ETH_NAME_MAX_LEN]; 672 int own_domain_id = 0; 673 uint16_t port_id; 674 unsigned int i; 675 #ifdef HAVE_MLX5DV_DR_DEVX_PORT 676 struct mlx5dv_devx_port devx_port = { .comp_mask = 0 }; 677 #endif 678 679 /* Determine if this port representor is supposed to be spawned. */ 680 if (switch_info->representor && dpdk_dev->devargs) { 681 struct rte_eth_devargs eth_da; 682 683 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, ð_da); 684 if (err) { 685 rte_errno = -err; 686 DRV_LOG(ERR, "failed to process device arguments: %s", 687 strerror(rte_errno)); 688 return NULL; 689 } 690 for (i = 0; i < eth_da.nb_representor_ports; ++i) 691 if (eth_da.representor_ports[i] == 692 (uint16_t)switch_info->port_name) 693 break; 694 if (i == eth_da.nb_representor_ports) { 695 rte_errno = EBUSY; 696 return NULL; 697 } 698 } 699 /* Build device name. */ 700 if (spawn->pf_bond < 0) { 701 /* Single device. */ 702 if (!switch_info->representor) 703 strlcpy(name, dpdk_dev->name, sizeof(name)); 704 else 705 snprintf(name, sizeof(name), "%s_representor_%u", 706 dpdk_dev->name, switch_info->port_name); 707 } else { 708 /* Bonding device. */ 709 if (!switch_info->representor) 710 snprintf(name, sizeof(name), "%s_%s", 711 dpdk_dev->name, 712 mlx5_os_get_dev_device_name(spawn->phys_dev)); 713 else 714 snprintf(name, sizeof(name), "%s_%s_representor_%u", 715 dpdk_dev->name, 716 mlx5_os_get_dev_device_name(spawn->phys_dev), 717 switch_info->port_name); 718 } 719 /* check if the device is already spawned */ 720 if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) { 721 rte_errno = EEXIST; 722 return NULL; 723 } 724 DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name); 725 if (rte_eal_process_type() == RTE_PROC_SECONDARY) { 726 struct mlx5_mp_id mp_id; 727 728 eth_dev = rte_eth_dev_attach_secondary(name); 729 if (eth_dev == NULL) { 730 DRV_LOG(ERR, "can not attach rte ethdev"); 731 rte_errno = ENOMEM; 732 return NULL; 733 } 734 eth_dev->device = dpdk_dev; 735 eth_dev->dev_ops = &mlx5_os_dev_sec_ops; 736 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status; 737 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status; 738 err = mlx5_proc_priv_init(eth_dev); 739 if (err) 740 return NULL; 741 mp_id.port_id = eth_dev->data->port_id; 742 strlcpy(mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN); 743 /* Receive command fd from primary process */ 744 err = mlx5_mp_req_verbs_cmd_fd(&mp_id); 745 if (err < 0) 746 goto err_secondary; 747 /* Remap UAR for Tx queues. */ 748 err = mlx5_tx_uar_init_secondary(eth_dev, err); 749 if (err) 750 goto err_secondary; 751 /* 752 * Ethdev pointer is still required as input since 753 * the primary device is not accessible from the 754 * secondary process. 755 */ 756 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev); 757 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev); 758 return eth_dev; 759 err_secondary: 760 mlx5_dev_close(eth_dev); 761 return NULL; 762 } 763 /* 764 * Some parameters ("tx_db_nc" in particularly) are needed in 765 * advance to create dv/verbs device context. We proceed the 766 * devargs here to get ones, and later proceed devargs again 767 * to override some hardware settings. 768 */ 769 err = mlx5_args(config, dpdk_dev->devargs); 770 if (err) { 771 err = rte_errno; 772 DRV_LOG(ERR, "failed to process device arguments: %s", 773 strerror(rte_errno)); 774 goto error; 775 } 776 if (config->dv_miss_info) { 777 if (switch_info->master || switch_info->representor) 778 config->dv_xmeta_en = MLX5_XMETA_MODE_META16; 779 } 780 mlx5_malloc_mem_select(config->sys_mem_en); 781 sh = mlx5_alloc_shared_dev_ctx(spawn, config); 782 if (!sh) 783 return NULL; 784 config->devx = sh->devx; 785 #ifdef HAVE_MLX5DV_DR_ACTION_DEST_DEVX_TIR 786 config->dest_tir = 1; 787 #endif 788 #ifdef HAVE_IBV_MLX5_MOD_SWP 789 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP; 790 #endif 791 /* 792 * Multi-packet send is supported by ConnectX-4 Lx PF as well 793 * as all ConnectX-5 devices. 794 */ 795 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT 796 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS; 797 #endif 798 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT 799 dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ; 800 #endif 801 mlx5_glue->dv_query_device(sh->ctx, &dv_attr); 802 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) { 803 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) { 804 DRV_LOG(DEBUG, "enhanced MPW is supported"); 805 mps = MLX5_MPW_ENHANCED; 806 } else { 807 DRV_LOG(DEBUG, "MPW is supported"); 808 mps = MLX5_MPW; 809 } 810 } else { 811 DRV_LOG(DEBUG, "MPW isn't supported"); 812 mps = MLX5_MPW_DISABLED; 813 } 814 #ifdef HAVE_IBV_MLX5_MOD_SWP 815 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP) 816 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads; 817 DRV_LOG(DEBUG, "SWP support: %u", swp); 818 #endif 819 config->swp = !!swp; 820 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT 821 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) { 822 struct mlx5dv_striding_rq_caps mprq_caps = 823 dv_attr.striding_rq_caps; 824 825 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d", 826 mprq_caps.min_single_stride_log_num_of_bytes); 827 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d", 828 mprq_caps.max_single_stride_log_num_of_bytes); 829 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d", 830 mprq_caps.min_single_wqe_log_num_of_strides); 831 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d", 832 mprq_caps.max_single_wqe_log_num_of_strides); 833 DRV_LOG(DEBUG, "\tsupported_qpts: %d", 834 mprq_caps.supported_qpts); 835 DRV_LOG(DEBUG, "device supports Multi-Packet RQ"); 836 mprq = 1; 837 mprq_min_stride_size_n = 838 mprq_caps.min_single_stride_log_num_of_bytes; 839 mprq_max_stride_size_n = 840 mprq_caps.max_single_stride_log_num_of_bytes; 841 mprq_min_stride_num_n = 842 mprq_caps.min_single_wqe_log_num_of_strides; 843 mprq_max_stride_num_n = 844 mprq_caps.max_single_wqe_log_num_of_strides; 845 } 846 #endif 847 if (RTE_CACHE_LINE_SIZE == 128 && 848 !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP)) 849 cqe_comp = 0; 850 else 851 cqe_comp = 1; 852 config->cqe_comp = cqe_comp; 853 #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD 854 /* Whether device supports 128B Rx CQE padding. */ 855 cqe_pad = RTE_CACHE_LINE_SIZE == 128 && 856 (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD); 857 #endif 858 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT 859 if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) { 860 tunnel_en = ((dv_attr.tunnel_offloads_caps & 861 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) && 862 (dv_attr.tunnel_offloads_caps & 863 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE) && 864 (dv_attr.tunnel_offloads_caps & 865 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GENEVE)); 866 } 867 DRV_LOG(DEBUG, "tunnel offloading is %ssupported", 868 tunnel_en ? "" : "not "); 869 #else 870 DRV_LOG(WARNING, 871 "tunnel offloading disabled due to old OFED/rdma-core version"); 872 #endif 873 config->tunnel_en = tunnel_en; 874 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT 875 mpls_en = ((dv_attr.tunnel_offloads_caps & 876 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) && 877 (dv_attr.tunnel_offloads_caps & 878 MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP)); 879 DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported", 880 mpls_en ? "" : "not "); 881 #else 882 DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to" 883 " old OFED/rdma-core version or firmware configuration"); 884 #endif 885 config->mpls_en = mpls_en; 886 /* Check port status. */ 887 err = mlx5_glue->query_port(sh->ctx, spawn->phys_port, &port_attr); 888 if (err) { 889 DRV_LOG(ERR, "port query failed: %s", strerror(err)); 890 goto error; 891 } 892 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) { 893 DRV_LOG(ERR, "port is not configured in Ethernet mode"); 894 err = EINVAL; 895 goto error; 896 } 897 if (port_attr.state != IBV_PORT_ACTIVE) 898 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)", 899 mlx5_glue->port_state_str(port_attr.state), 900 port_attr.state); 901 /* Allocate private eth device data. */ 902 priv = mlx5_malloc(MLX5_MEM_ZERO | MLX5_MEM_RTE, 903 sizeof(*priv), 904 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY); 905 if (priv == NULL) { 906 DRV_LOG(ERR, "priv allocation failure"); 907 err = ENOMEM; 908 goto error; 909 } 910 priv->sh = sh; 911 priv->dev_port = spawn->phys_port; 912 priv->pci_dev = spawn->pci_dev; 913 priv->mtu = RTE_ETHER_MTU; 914 priv->mp_id.port_id = port_id; 915 strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN); 916 /* Some internal functions rely on Netlink sockets, open them now. */ 917 priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA); 918 priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE); 919 priv->representor = !!switch_info->representor; 920 priv->master = !!switch_info->master; 921 priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID; 922 priv->vport_meta_tag = 0; 923 priv->vport_meta_mask = 0; 924 priv->pf_bond = spawn->pf_bond; 925 #ifdef HAVE_MLX5DV_DR_DEVX_PORT 926 /* 927 * The DevX port query API is implemented. E-Switch may use 928 * either vport or reg_c[0] metadata register to match on 929 * vport index. The engaged part of metadata register is 930 * defined by mask. 931 */ 932 if (switch_info->representor || switch_info->master) { 933 devx_port.comp_mask = MLX5DV_DEVX_PORT_VPORT | 934 MLX5DV_DEVX_PORT_MATCH_REG_C_0; 935 err = mlx5_glue->devx_port_query(sh->ctx, spawn->phys_port, 936 &devx_port); 937 if (err) { 938 DRV_LOG(WARNING, 939 "can't query devx port %d on device %s", 940 spawn->phys_port, 941 mlx5_os_get_dev_device_name(spawn->phys_dev)); 942 devx_port.comp_mask = 0; 943 } 944 } 945 if (devx_port.comp_mask & MLX5DV_DEVX_PORT_MATCH_REG_C_0) { 946 priv->vport_meta_tag = devx_port.reg_c_0.value; 947 priv->vport_meta_mask = devx_port.reg_c_0.mask; 948 if (!priv->vport_meta_mask) { 949 DRV_LOG(ERR, "vport zero mask for port %d" 950 " on bonding device %s", 951 spawn->phys_port, 952 mlx5_os_get_dev_device_name 953 (spawn->phys_dev)); 954 err = ENOTSUP; 955 goto error; 956 } 957 if (priv->vport_meta_tag & ~priv->vport_meta_mask) { 958 DRV_LOG(ERR, "invalid vport tag for port %d" 959 " on bonding device %s", 960 spawn->phys_port, 961 mlx5_os_get_dev_device_name 962 (spawn->phys_dev)); 963 err = ENOTSUP; 964 goto error; 965 } 966 } 967 if (devx_port.comp_mask & MLX5DV_DEVX_PORT_VPORT) { 968 priv->vport_id = devx_port.vport_num; 969 } else if (spawn->pf_bond >= 0) { 970 DRV_LOG(ERR, "can't deduce vport index for port %d" 971 " on bonding device %s", 972 spawn->phys_port, 973 mlx5_os_get_dev_device_name(spawn->phys_dev)); 974 err = ENOTSUP; 975 goto error; 976 } else { 977 /* Suppose vport index in compatible way. */ 978 priv->vport_id = switch_info->representor ? 979 switch_info->port_name + 1 : -1; 980 } 981 #else 982 /* 983 * Kernel/rdma_core support single E-Switch per PF configurations 984 * only and vport_id field contains the vport index for 985 * associated VF, which is deduced from representor port name. 986 * For example, let's have the IB device port 10, it has 987 * attached network device eth0, which has port name attribute 988 * pf0vf2, we can deduce the VF number as 2, and set vport index 989 * as 3 (2+1). This assigning schema should be changed if the 990 * multiple E-Switch instances per PF configurations or/and PCI 991 * subfunctions are added. 992 */ 993 priv->vport_id = switch_info->representor ? 994 switch_info->port_name + 1 : -1; 995 #endif 996 /* representor_id field keeps the unmodified VF index. */ 997 priv->representor_id = switch_info->representor ? 998 switch_info->port_name : -1; 999 /* 1000 * Look for sibling devices in order to reuse their switch domain 1001 * if any, otherwise allocate one. 1002 */ 1003 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { 1004 const struct mlx5_priv *opriv = 1005 rte_eth_devices[port_id].data->dev_private; 1006 1007 if (!opriv || 1008 opriv->sh != priv->sh || 1009 opriv->domain_id == 1010 RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) 1011 continue; 1012 priv->domain_id = opriv->domain_id; 1013 break; 1014 } 1015 if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) { 1016 err = rte_eth_switch_domain_alloc(&priv->domain_id); 1017 if (err) { 1018 err = rte_errno; 1019 DRV_LOG(ERR, "unable to allocate switch domain: %s", 1020 strerror(rte_errno)); 1021 goto error; 1022 } 1023 own_domain_id = 1; 1024 } 1025 /* Override some values set by hardware configuration. */ 1026 mlx5_args(config, dpdk_dev->devargs); 1027 err = mlx5_dev_check_sibling_config(priv, config); 1028 if (err) 1029 goto error; 1030 config->hw_csum = !!(sh->device_attr.device_cap_flags_ex & 1031 IBV_DEVICE_RAW_IP_CSUM); 1032 DRV_LOG(DEBUG, "checksum offloading is %ssupported", 1033 (config->hw_csum ? "" : "not ")); 1034 #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \ 1035 !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) 1036 DRV_LOG(DEBUG, "counters are not supported"); 1037 #endif 1038 #if !defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_MLX5DV_DR) 1039 if (config->dv_flow_en) { 1040 DRV_LOG(WARNING, "DV flow is not supported"); 1041 config->dv_flow_en = 0; 1042 } 1043 #endif 1044 config->ind_table_max_size = 1045 sh->device_attr.max_rwq_indirection_table_size; 1046 /* 1047 * Remove this check once DPDK supports larger/variable 1048 * indirection tables. 1049 */ 1050 if (config->ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512) 1051 config->ind_table_max_size = ETH_RSS_RETA_SIZE_512; 1052 DRV_LOG(DEBUG, "maximum Rx indirection table size is %u", 1053 config->ind_table_max_size); 1054 config->hw_vlan_strip = !!(sh->device_attr.raw_packet_caps & 1055 IBV_RAW_PACKET_CAP_CVLAN_STRIPPING); 1056 DRV_LOG(DEBUG, "VLAN stripping is %ssupported", 1057 (config->hw_vlan_strip ? "" : "not ")); 1058 config->hw_fcs_strip = !!(sh->device_attr.raw_packet_caps & 1059 IBV_RAW_PACKET_CAP_SCATTER_FCS); 1060 #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING) 1061 hw_padding = !!sh->device_attr.rx_pad_end_addr_align; 1062 #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING) 1063 hw_padding = !!(sh->device_attr.device_cap_flags_ex & 1064 IBV_DEVICE_PCI_WRITE_END_PADDING); 1065 #endif 1066 if (config->hw_padding && !hw_padding) { 1067 DRV_LOG(DEBUG, "Rx end alignment padding isn't supported"); 1068 config->hw_padding = 0; 1069 } else if (config->hw_padding) { 1070 DRV_LOG(DEBUG, "Rx end alignment padding is enabled"); 1071 } 1072 config->tso = (sh->device_attr.max_tso > 0 && 1073 (sh->device_attr.tso_supported_qpts & 1074 (1 << IBV_QPT_RAW_PACKET))); 1075 if (config->tso) 1076 config->tso_max_payload_sz = sh->device_attr.max_tso; 1077 /* 1078 * MPW is disabled by default, while the Enhanced MPW is enabled 1079 * by default. 1080 */ 1081 if (config->mps == MLX5_ARG_UNSET) 1082 config->mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED : 1083 MLX5_MPW_DISABLED; 1084 else 1085 config->mps = config->mps ? mps : MLX5_MPW_DISABLED; 1086 DRV_LOG(INFO, "%sMPS is %s", 1087 config->mps == MLX5_MPW_ENHANCED ? "enhanced " : 1088 config->mps == MLX5_MPW ? "legacy " : "", 1089 config->mps != MLX5_MPW_DISABLED ? "enabled" : "disabled"); 1090 if (config->cqe_comp && !cqe_comp) { 1091 DRV_LOG(WARNING, "Rx CQE compression isn't supported"); 1092 config->cqe_comp = 0; 1093 } 1094 if (config->cqe_pad && !cqe_pad) { 1095 DRV_LOG(WARNING, "Rx CQE padding isn't supported"); 1096 config->cqe_pad = 0; 1097 } else if (config->cqe_pad) { 1098 DRV_LOG(INFO, "Rx CQE padding is enabled"); 1099 } 1100 if (config->devx) { 1101 err = mlx5_devx_cmd_query_hca_attr(sh->ctx, &config->hca_attr); 1102 if (err) { 1103 err = -err; 1104 goto error; 1105 } 1106 /* Check relax ordering support. */ 1107 if (config->hca_attr.relaxed_ordering_write && 1108 config->hca_attr.relaxed_ordering_read && 1109 !haswell_broadwell_cpu) 1110 sh->cmng.relaxed_ordering = 1; 1111 /* Check for LRO support. */ 1112 if (config->dest_tir && config->hca_attr.lro_cap && 1113 config->dv_flow_en) { 1114 /* TBD check tunnel lro caps. */ 1115 config->lro.supported = config->hca_attr.lro_cap; 1116 DRV_LOG(DEBUG, "Device supports LRO"); 1117 /* 1118 * If LRO timeout is not configured by application, 1119 * use the minimal supported value. 1120 */ 1121 if (!config->lro.timeout) 1122 config->lro.timeout = 1123 config->hca_attr.lro_timer_supported_periods[0]; 1124 DRV_LOG(DEBUG, "LRO session timeout set to %d usec", 1125 config->lro.timeout); 1126 DRV_LOG(DEBUG, "LRO minimal size of TCP segment " 1127 "required for coalescing is %d bytes", 1128 config->hca_attr.lro_min_mss_size); 1129 } 1130 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER) 1131 if (config->hca_attr.qos.sup && 1132 config->hca_attr.qos.srtcm_sup && 1133 config->dv_flow_en) { 1134 uint8_t reg_c_mask = 1135 config->hca_attr.qos.flow_meter_reg_c_ids; 1136 /* 1137 * Meter needs two REG_C's for color match and pre-sfx 1138 * flow match. Here get the REG_C for color match. 1139 * REG_C_0 and REG_C_1 is reserved for metadata feature. 1140 */ 1141 reg_c_mask &= 0xfc; 1142 if (__builtin_popcount(reg_c_mask) < 1) { 1143 priv->mtr_en = 0; 1144 DRV_LOG(WARNING, "No available register for" 1145 " meter."); 1146 } else { 1147 priv->mtr_color_reg = ffs(reg_c_mask) - 1 + 1148 REG_C_0; 1149 priv->mtr_en = 1; 1150 priv->mtr_reg_share = 1151 config->hca_attr.qos.flow_meter_reg_share; 1152 DRV_LOG(DEBUG, "The REG_C meter uses is %d", 1153 priv->mtr_color_reg); 1154 } 1155 } 1156 #endif 1157 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_SAMPLE) 1158 if (config->hca_attr.log_max_ft_sampler_num > 0 && 1159 config->dv_flow_en) { 1160 priv->sampler_en = 1; 1161 DRV_LOG(DEBUG, "The Sampler enabled!\n"); 1162 } else { 1163 priv->sampler_en = 0; 1164 if (!config->hca_attr.log_max_ft_sampler_num) 1165 DRV_LOG(WARNING, "No available register for" 1166 " Sampler."); 1167 else 1168 DRV_LOG(DEBUG, "DV flow is not supported!\n"); 1169 } 1170 #endif 1171 } 1172 if (config->tx_pp) { 1173 DRV_LOG(DEBUG, "Timestamp counter frequency %u kHz", 1174 config->hca_attr.dev_freq_khz); 1175 DRV_LOG(DEBUG, "Packet pacing is %ssupported", 1176 config->hca_attr.qos.packet_pacing ? "" : "not "); 1177 DRV_LOG(DEBUG, "Cross channel ops are %ssupported", 1178 config->hca_attr.cross_channel ? "" : "not "); 1179 DRV_LOG(DEBUG, "WQE index ignore is %ssupported", 1180 config->hca_attr.wqe_index_ignore ? "" : "not "); 1181 DRV_LOG(DEBUG, "Non-wire SQ feature is %ssupported", 1182 config->hca_attr.non_wire_sq ? "" : "not "); 1183 DRV_LOG(DEBUG, "Static WQE SQ feature is %ssupported (%d)", 1184 config->hca_attr.log_max_static_sq_wq ? "" : "not ", 1185 config->hca_attr.log_max_static_sq_wq); 1186 DRV_LOG(DEBUG, "WQE rate PP mode is %ssupported", 1187 config->hca_attr.qos.wqe_rate_pp ? "" : "not "); 1188 if (!config->devx) { 1189 DRV_LOG(ERR, "DevX is required for packet pacing"); 1190 err = ENODEV; 1191 goto error; 1192 } 1193 if (!config->hca_attr.qos.packet_pacing) { 1194 DRV_LOG(ERR, "Packet pacing is not supported"); 1195 err = ENODEV; 1196 goto error; 1197 } 1198 if (!config->hca_attr.cross_channel) { 1199 DRV_LOG(ERR, "Cross channel operations are" 1200 " required for packet pacing"); 1201 err = ENODEV; 1202 goto error; 1203 } 1204 if (!config->hca_attr.wqe_index_ignore) { 1205 DRV_LOG(ERR, "WQE index ignore feature is" 1206 " required for packet pacing"); 1207 err = ENODEV; 1208 goto error; 1209 } 1210 if (!config->hca_attr.non_wire_sq) { 1211 DRV_LOG(ERR, "Non-wire SQ feature is" 1212 " required for packet pacing"); 1213 err = ENODEV; 1214 goto error; 1215 } 1216 if (!config->hca_attr.log_max_static_sq_wq) { 1217 DRV_LOG(ERR, "Static WQE SQ feature is" 1218 " required for packet pacing"); 1219 err = ENODEV; 1220 goto error; 1221 } 1222 if (!config->hca_attr.qos.wqe_rate_pp) { 1223 DRV_LOG(ERR, "WQE rate mode is required" 1224 " for packet pacing"); 1225 err = ENODEV; 1226 goto error; 1227 } 1228 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET 1229 DRV_LOG(ERR, "DevX does not provide UAR offset," 1230 " can't create queues for packet pacing"); 1231 err = ENODEV; 1232 goto error; 1233 #endif 1234 } 1235 if (config->devx) { 1236 uint32_t reg[MLX5_ST_SZ_DW(register_mtutc)]; 1237 1238 err = config->hca_attr.access_register_user ? 1239 mlx5_devx_cmd_register_read 1240 (sh->ctx, MLX5_REGISTER_ID_MTUTC, 0, 1241 reg, MLX5_ST_SZ_DW(register_mtutc)) : ENOTSUP; 1242 if (!err) { 1243 uint32_t ts_mode; 1244 1245 /* MTUTC register is read successfully. */ 1246 ts_mode = MLX5_GET(register_mtutc, reg, 1247 time_stamp_mode); 1248 if (ts_mode == MLX5_MTUTC_TIMESTAMP_MODE_REAL_TIME) 1249 config->rt_timestamp = 1; 1250 } else { 1251 /* Kernel does not support register reading. */ 1252 if (config->hca_attr.dev_freq_khz == 1253 (NS_PER_S / MS_PER_S)) 1254 config->rt_timestamp = 1; 1255 } 1256 } 1257 /* 1258 * If HW has bug working with tunnel packet decapsulation and 1259 * scatter FCS, and decapsulation is needed, clear the hw_fcs_strip 1260 * bit. Then DEV_RX_OFFLOAD_KEEP_CRC bit will not be set anymore. 1261 */ 1262 if (config->hca_attr.scatter_fcs_w_decap_disable && config->decap_en) 1263 config->hw_fcs_strip = 0; 1264 DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported", 1265 (config->hw_fcs_strip ? "" : "not ")); 1266 if (config->mprq.enabled && mprq) { 1267 if (config->mprq.stride_num_n && 1268 (config->mprq.stride_num_n > mprq_max_stride_num_n || 1269 config->mprq.stride_num_n < mprq_min_stride_num_n)) { 1270 config->mprq.stride_num_n = 1271 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N, 1272 mprq_min_stride_num_n), 1273 mprq_max_stride_num_n); 1274 DRV_LOG(WARNING, 1275 "the number of strides" 1276 " for Multi-Packet RQ is out of range," 1277 " setting default value (%u)", 1278 1 << config->mprq.stride_num_n); 1279 } 1280 if (config->mprq.stride_size_n && 1281 (config->mprq.stride_size_n > mprq_max_stride_size_n || 1282 config->mprq.stride_size_n < mprq_min_stride_size_n)) { 1283 config->mprq.stride_size_n = 1284 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_SIZE_N, 1285 mprq_min_stride_size_n), 1286 mprq_max_stride_size_n); 1287 DRV_LOG(WARNING, 1288 "the size of a stride" 1289 " for Multi-Packet RQ is out of range," 1290 " setting default value (%u)", 1291 1 << config->mprq.stride_size_n); 1292 } 1293 config->mprq.min_stride_size_n = mprq_min_stride_size_n; 1294 config->mprq.max_stride_size_n = mprq_max_stride_size_n; 1295 } else if (config->mprq.enabled && !mprq) { 1296 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported"); 1297 config->mprq.enabled = 0; 1298 } 1299 if (config->max_dump_files_num == 0) 1300 config->max_dump_files_num = 128; 1301 eth_dev = rte_eth_dev_allocate(name); 1302 if (eth_dev == NULL) { 1303 DRV_LOG(ERR, "can not allocate rte ethdev"); 1304 err = ENOMEM; 1305 goto error; 1306 } 1307 if (priv->representor) { 1308 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR; 1309 eth_dev->data->representor_id = priv->representor_id; 1310 } 1311 /* 1312 * Store associated network device interface index. This index 1313 * is permanent throughout the lifetime of device. So, we may store 1314 * the ifindex here and use the cached value further. 1315 */ 1316 MLX5_ASSERT(spawn->ifindex); 1317 priv->if_index = spawn->ifindex; 1318 if (priv->pf_bond >= 0 && priv->master) { 1319 /* Get bond interface info */ 1320 err = mlx5_sysfs_bond_info(priv->if_index, 1321 &priv->bond_ifindex, 1322 priv->bond_name); 1323 if (err) 1324 DRV_LOG(ERR, "unable to get bond info: %s", 1325 strerror(rte_errno)); 1326 else 1327 DRV_LOG(INFO, "PF device %u, bond device %u(%s)", 1328 priv->if_index, priv->bond_ifindex, 1329 priv->bond_name); 1330 } 1331 eth_dev->data->dev_private = priv; 1332 priv->dev_data = eth_dev->data; 1333 eth_dev->data->mac_addrs = priv->mac; 1334 eth_dev->device = dpdk_dev; 1335 eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS; 1336 /* Configure the first MAC address by default. */ 1337 if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) { 1338 DRV_LOG(ERR, 1339 "port %u cannot get MAC address, is mlx5_en" 1340 " loaded? (errno: %s)", 1341 eth_dev->data->port_id, strerror(rte_errno)); 1342 err = ENODEV; 1343 goto error; 1344 } 1345 DRV_LOG(INFO, 1346 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x", 1347 eth_dev->data->port_id, 1348 mac.addr_bytes[0], mac.addr_bytes[1], 1349 mac.addr_bytes[2], mac.addr_bytes[3], 1350 mac.addr_bytes[4], mac.addr_bytes[5]); 1351 #ifdef RTE_LIBRTE_MLX5_DEBUG 1352 { 1353 char ifname[IF_NAMESIZE]; 1354 1355 if (mlx5_get_ifname(eth_dev, &ifname) == 0) 1356 DRV_LOG(DEBUG, "port %u ifname is \"%s\"", 1357 eth_dev->data->port_id, ifname); 1358 else 1359 DRV_LOG(DEBUG, "port %u ifname is unknown", 1360 eth_dev->data->port_id); 1361 } 1362 #endif 1363 /* Get actual MTU if possible. */ 1364 err = mlx5_get_mtu(eth_dev, &priv->mtu); 1365 if (err) { 1366 err = rte_errno; 1367 goto error; 1368 } 1369 DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id, 1370 priv->mtu); 1371 /* Initialize burst functions to prevent crashes before link-up. */ 1372 eth_dev->rx_pkt_burst = removed_rx_burst; 1373 eth_dev->tx_pkt_burst = removed_tx_burst; 1374 eth_dev->dev_ops = &mlx5_os_dev_ops; 1375 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status; 1376 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status; 1377 eth_dev->rx_queue_count = mlx5_rx_queue_count; 1378 /* Register MAC address. */ 1379 claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0)); 1380 if (config->vf && config->vf_nl_en) 1381 mlx5_nl_mac_addr_sync(priv->nl_socket_route, 1382 mlx5_ifindex(eth_dev), 1383 eth_dev->data->mac_addrs, 1384 MLX5_MAX_MAC_ADDRESSES); 1385 priv->flows = 0; 1386 priv->ctrl_flows = 0; 1387 rte_spinlock_init(&priv->flow_list_lock); 1388 TAILQ_INIT(&priv->flow_meters); 1389 TAILQ_INIT(&priv->flow_meter_profiles); 1390 /* Hint libmlx5 to use PMD allocator for data plane resources */ 1391 mlx5_glue->dv_set_context_attr(sh->ctx, 1392 MLX5DV_CTX_ATTR_BUF_ALLOCATORS, 1393 (void *)((uintptr_t)&(struct mlx5dv_ctx_allocators){ 1394 .alloc = &mlx5_alloc_verbs_buf, 1395 .free = &mlx5_free_verbs_buf, 1396 .data = priv, 1397 })); 1398 /* Bring Ethernet device up. */ 1399 DRV_LOG(DEBUG, "port %u forcing Ethernet interface up", 1400 eth_dev->data->port_id); 1401 mlx5_set_link_up(eth_dev); 1402 /* 1403 * Even though the interrupt handler is not installed yet, 1404 * interrupts will still trigger on the async_fd from 1405 * Verbs context returned by ibv_open_device(). 1406 */ 1407 mlx5_link_update(eth_dev, 0); 1408 #ifdef HAVE_MLX5DV_DR_ESWITCH 1409 if (!(config->hca_attr.eswitch_manager && config->dv_flow_en && 1410 (switch_info->representor || switch_info->master))) 1411 config->dv_esw_en = 0; 1412 #else 1413 config->dv_esw_en = 0; 1414 #endif 1415 /* Detect minimal data bytes to inline. */ 1416 mlx5_set_min_inline(spawn, config); 1417 /* Store device configuration on private structure. */ 1418 priv->config = *config; 1419 /* Create context for virtual machine VLAN workaround. */ 1420 priv->vmwa_context = mlx5_vlan_vmwa_init(eth_dev, spawn->ifindex); 1421 if (config->dv_flow_en) { 1422 err = mlx5_alloc_shared_dr(priv); 1423 if (err) 1424 goto error; 1425 } 1426 if (config->devx && config->dv_flow_en && config->dest_tir) { 1427 priv->obj_ops = devx_obj_ops; 1428 priv->obj_ops.drop_action_create = 1429 ibv_obj_ops.drop_action_create; 1430 priv->obj_ops.drop_action_destroy = 1431 ibv_obj_ops.drop_action_destroy; 1432 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET 1433 priv->obj_ops.txq_obj_modify = ibv_obj_ops.txq_obj_modify; 1434 #else 1435 if (config->dv_esw_en) 1436 priv->obj_ops.txq_obj_modify = 1437 ibv_obj_ops.txq_obj_modify; 1438 #endif 1439 /* Use specific wrappers for Tx object. */ 1440 priv->obj_ops.txq_obj_new = mlx5_os_txq_obj_new; 1441 priv->obj_ops.txq_obj_release = mlx5_os_txq_obj_release; 1442 1443 } else { 1444 priv->obj_ops = ibv_obj_ops; 1445 } 1446 priv->drop_queue.hrxq = mlx5_drop_action_create(eth_dev); 1447 if (!priv->drop_queue.hrxq) 1448 goto error; 1449 /* Supported Verbs flow priority number detection. */ 1450 err = mlx5_flow_discover_priorities(eth_dev); 1451 if (err < 0) { 1452 err = -err; 1453 goto error; 1454 } 1455 priv->config.flow_prio = err; 1456 if (!priv->config.dv_esw_en && 1457 priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) { 1458 DRV_LOG(WARNING, "metadata mode %u is not supported " 1459 "(no E-Switch)", priv->config.dv_xmeta_en); 1460 priv->config.dv_xmeta_en = MLX5_XMETA_MODE_LEGACY; 1461 } 1462 mlx5_set_metadata_mask(eth_dev); 1463 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY && 1464 !priv->sh->dv_regc0_mask) { 1465 DRV_LOG(ERR, "metadata mode %u is not supported " 1466 "(no metadata reg_c[0] is available)", 1467 priv->config.dv_xmeta_en); 1468 err = ENOTSUP; 1469 goto error; 1470 } 1471 /* Query availability of metadata reg_c's. */ 1472 err = mlx5_flow_discover_mreg_c(eth_dev); 1473 if (err < 0) { 1474 err = -err; 1475 goto error; 1476 } 1477 if (!mlx5_flow_ext_mreg_supported(eth_dev)) { 1478 DRV_LOG(DEBUG, 1479 "port %u extensive metadata register is not supported", 1480 eth_dev->data->port_id); 1481 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) { 1482 DRV_LOG(ERR, "metadata mode %u is not supported " 1483 "(no metadata registers available)", 1484 priv->config.dv_xmeta_en); 1485 err = ENOTSUP; 1486 goto error; 1487 } 1488 } 1489 if (priv->config.dv_flow_en && 1490 priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY && 1491 mlx5_flow_ext_mreg_supported(eth_dev) && 1492 priv->sh->dv_regc0_mask) { 1493 priv->mreg_cp_tbl = mlx5_hlist_create(MLX5_FLOW_MREG_HNAME, 1494 MLX5_FLOW_MREG_HTABLE_SZ, 1495 0, 0, 1496 flow_dv_mreg_create_cb, 1497 NULL, 1498 flow_dv_mreg_remove_cb); 1499 if (!priv->mreg_cp_tbl) { 1500 err = ENOMEM; 1501 goto error; 1502 } 1503 priv->mreg_cp_tbl->ctx = eth_dev; 1504 } 1505 mlx5_flow_counter_mode_config(eth_dev); 1506 return eth_dev; 1507 error: 1508 if (priv) { 1509 if (priv->mreg_cp_tbl) 1510 mlx5_hlist_destroy(priv->mreg_cp_tbl); 1511 if (priv->sh) 1512 mlx5_os_free_shared_dr(priv); 1513 if (priv->nl_socket_route >= 0) 1514 close(priv->nl_socket_route); 1515 if (priv->nl_socket_rdma >= 0) 1516 close(priv->nl_socket_rdma); 1517 if (priv->vmwa_context) 1518 mlx5_vlan_vmwa_exit(priv->vmwa_context); 1519 if (eth_dev && priv->drop_queue.hrxq) 1520 mlx5_drop_action_destroy(eth_dev); 1521 if (own_domain_id) 1522 claim_zero(rte_eth_switch_domain_free(priv->domain_id)); 1523 mlx5_free(priv); 1524 if (eth_dev != NULL) 1525 eth_dev->data->dev_private = NULL; 1526 } 1527 if (eth_dev != NULL) { 1528 /* mac_addrs must not be freed alone because part of 1529 * dev_private 1530 **/ 1531 eth_dev->data->mac_addrs = NULL; 1532 rte_eth_dev_release_port(eth_dev); 1533 } 1534 if (sh) 1535 mlx5_free_shared_dev_ctx(sh); 1536 MLX5_ASSERT(err > 0); 1537 rte_errno = err; 1538 return NULL; 1539 } 1540 1541 /** 1542 * Comparison callback to sort device data. 1543 * 1544 * This is meant to be used with qsort(). 1545 * 1546 * @param a[in] 1547 * Pointer to pointer to first data object. 1548 * @param b[in] 1549 * Pointer to pointer to second data object. 1550 * 1551 * @return 1552 * 0 if both objects are equal, less than 0 if the first argument is less 1553 * than the second, greater than 0 otherwise. 1554 */ 1555 static int 1556 mlx5_dev_spawn_data_cmp(const void *a, const void *b) 1557 { 1558 const struct mlx5_switch_info *si_a = 1559 &((const struct mlx5_dev_spawn_data *)a)->info; 1560 const struct mlx5_switch_info *si_b = 1561 &((const struct mlx5_dev_spawn_data *)b)->info; 1562 int ret; 1563 1564 /* Master device first. */ 1565 ret = si_b->master - si_a->master; 1566 if (ret) 1567 return ret; 1568 /* Then representor devices. */ 1569 ret = si_b->representor - si_a->representor; 1570 if (ret) 1571 return ret; 1572 /* Unidentified devices come last in no specific order. */ 1573 if (!si_a->representor) 1574 return 0; 1575 /* Order representors by name. */ 1576 return si_a->port_name - si_b->port_name; 1577 } 1578 1579 /** 1580 * Match PCI information for possible slaves of bonding device. 1581 * 1582 * @param[in] ibv_dev 1583 * Pointer to Infiniband device structure. 1584 * @param[in] pci_dev 1585 * Pointer to PCI device structure to match PCI address. 1586 * @param[in] nl_rdma 1587 * Netlink RDMA group socket handle. 1588 * 1589 * @return 1590 * negative value if no bonding device found, otherwise 1591 * positive index of slave PF in bonding. 1592 */ 1593 static int 1594 mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev, 1595 const struct rte_pci_device *pci_dev, 1596 int nl_rdma) 1597 { 1598 char ifname[IF_NAMESIZE + 1]; 1599 unsigned int ifindex; 1600 unsigned int np, i; 1601 FILE *file = NULL; 1602 int pf = -1; 1603 1604 /* 1605 * Try to get master device name. If something goes 1606 * wrong suppose the lack of kernel support and no 1607 * bonding devices. 1608 */ 1609 if (nl_rdma < 0) 1610 return -1; 1611 if (!strstr(ibv_dev->name, "bond")) 1612 return -1; 1613 np = mlx5_nl_portnum(nl_rdma, ibv_dev->name); 1614 if (!np) 1615 return -1; 1616 /* 1617 * The Master device might not be on the predefined 1618 * port (not on port index 1, it is not garanted), 1619 * we have to scan all Infiniband device port and 1620 * find master. 1621 */ 1622 for (i = 1; i <= np; ++i) { 1623 /* Check whether Infiniband port is populated. */ 1624 ifindex = mlx5_nl_ifindex(nl_rdma, ibv_dev->name, i); 1625 if (!ifindex) 1626 continue; 1627 if (!if_indextoname(ifindex, ifname)) 1628 continue; 1629 /* Try to read bonding slave names from sysfs. */ 1630 MKSTR(slaves, 1631 "/sys/class/net/%s/master/bonding/slaves", ifname); 1632 file = fopen(slaves, "r"); 1633 if (file) 1634 break; 1635 } 1636 if (!file) 1637 return -1; 1638 /* Use safe format to check maximal buffer length. */ 1639 MLX5_ASSERT(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE); 1640 while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) { 1641 char tmp_str[IF_NAMESIZE + 32]; 1642 struct rte_pci_addr pci_addr; 1643 struct mlx5_switch_info info; 1644 1645 /* Process slave interface names in the loop. */ 1646 snprintf(tmp_str, sizeof(tmp_str), 1647 "/sys/class/net/%s", ifname); 1648 if (mlx5_dev_to_pci_addr(tmp_str, &pci_addr)) { 1649 DRV_LOG(WARNING, "can not get PCI address" 1650 " for netdev \"%s\"", ifname); 1651 continue; 1652 } 1653 if (pci_dev->addr.domain != pci_addr.domain || 1654 pci_dev->addr.bus != pci_addr.bus || 1655 pci_dev->addr.devid != pci_addr.devid || 1656 pci_dev->addr.function != pci_addr.function) 1657 continue; 1658 /* Slave interface PCI address match found. */ 1659 fclose(file); 1660 snprintf(tmp_str, sizeof(tmp_str), 1661 "/sys/class/net/%s/phys_port_name", ifname); 1662 file = fopen(tmp_str, "rb"); 1663 if (!file) 1664 break; 1665 info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET; 1666 if (fscanf(file, "%32s", tmp_str) == 1) 1667 mlx5_translate_port_name(tmp_str, &info); 1668 if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY || 1669 info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK) 1670 pf = info.port_name; 1671 break; 1672 } 1673 if (file) 1674 fclose(file); 1675 return pf; 1676 } 1677 1678 /** 1679 * DPDK callback to register a PCI device. 1680 * 1681 * This function spawns Ethernet devices out of a given PCI device. 1682 * 1683 * @param[in] pci_drv 1684 * PCI driver structure (mlx5_driver). 1685 * @param[in] pci_dev 1686 * PCI device information. 1687 * 1688 * @return 1689 * 0 on success, a negative errno value otherwise and rte_errno is set. 1690 */ 1691 int 1692 mlx5_os_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, 1693 struct rte_pci_device *pci_dev) 1694 { 1695 struct ibv_device **ibv_list; 1696 /* 1697 * Number of found IB Devices matching with requested PCI BDF. 1698 * nd != 1 means there are multiple IB devices over the same 1699 * PCI device and we have representors and master. 1700 */ 1701 unsigned int nd = 0; 1702 /* 1703 * Number of found IB device Ports. nd = 1 and np = 1..n means 1704 * we have the single multiport IB device, and there may be 1705 * representors attached to some of found ports. 1706 */ 1707 unsigned int np = 0; 1708 /* 1709 * Number of DPDK ethernet devices to Spawn - either over 1710 * multiple IB devices or multiple ports of single IB device. 1711 * Actually this is the number of iterations to spawn. 1712 */ 1713 unsigned int ns = 0; 1714 /* 1715 * Bonding device 1716 * < 0 - no bonding device (single one) 1717 * >= 0 - bonding device (value is slave PF index) 1718 */ 1719 int bd = -1; 1720 struct mlx5_dev_spawn_data *list = NULL; 1721 struct mlx5_dev_config dev_config; 1722 unsigned int dev_config_vf; 1723 int ret; 1724 1725 if (rte_eal_process_type() == RTE_PROC_PRIMARY) 1726 mlx5_pmd_socket_init(); 1727 ret = mlx5_init_once(); 1728 if (ret) { 1729 DRV_LOG(ERR, "unable to init PMD global data: %s", 1730 strerror(rte_errno)); 1731 return -rte_errno; 1732 } 1733 errno = 0; 1734 ibv_list = mlx5_glue->get_device_list(&ret); 1735 if (!ibv_list) { 1736 rte_errno = errno ? errno : ENOSYS; 1737 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?"); 1738 return -rte_errno; 1739 } 1740 /* 1741 * First scan the list of all Infiniband devices to find 1742 * matching ones, gathering into the list. 1743 */ 1744 struct ibv_device *ibv_match[ret + 1]; 1745 int nl_route = mlx5_nl_init(NETLINK_ROUTE); 1746 int nl_rdma = mlx5_nl_init(NETLINK_RDMA); 1747 unsigned int i; 1748 1749 while (ret-- > 0) { 1750 struct rte_pci_addr pci_addr; 1751 1752 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name); 1753 bd = mlx5_device_bond_pci_match 1754 (ibv_list[ret], pci_dev, nl_rdma); 1755 if (bd >= 0) { 1756 /* 1757 * Bonding device detected. Only one match is allowed, 1758 * the bonding is supported over multi-port IB device, 1759 * there should be no matches on representor PCI 1760 * functions or non VF LAG bonding devices with 1761 * specified address. 1762 */ 1763 if (nd) { 1764 DRV_LOG(ERR, 1765 "multiple PCI match on bonding device" 1766 "\"%s\" found", ibv_list[ret]->name); 1767 rte_errno = ENOENT; 1768 ret = -rte_errno; 1769 goto exit; 1770 } 1771 DRV_LOG(INFO, "PCI information matches for" 1772 " slave %d bonding device \"%s\"", 1773 bd, ibv_list[ret]->name); 1774 ibv_match[nd++] = ibv_list[ret]; 1775 break; 1776 } 1777 if (mlx5_dev_to_pci_addr 1778 (ibv_list[ret]->ibdev_path, &pci_addr)) 1779 continue; 1780 if (pci_dev->addr.domain != pci_addr.domain || 1781 pci_dev->addr.bus != pci_addr.bus || 1782 pci_dev->addr.devid != pci_addr.devid || 1783 pci_dev->addr.function != pci_addr.function) 1784 continue; 1785 DRV_LOG(INFO, "PCI information matches for device \"%s\"", 1786 ibv_list[ret]->name); 1787 ibv_match[nd++] = ibv_list[ret]; 1788 } 1789 ibv_match[nd] = NULL; 1790 if (!nd) { 1791 /* No device matches, just complain and bail out. */ 1792 DRV_LOG(WARNING, 1793 "no Verbs device matches PCI device " PCI_PRI_FMT "," 1794 " are kernel drivers loaded?", 1795 pci_dev->addr.domain, pci_dev->addr.bus, 1796 pci_dev->addr.devid, pci_dev->addr.function); 1797 rte_errno = ENOENT; 1798 ret = -rte_errno; 1799 goto exit; 1800 } 1801 if (nd == 1) { 1802 /* 1803 * Found single matching device may have multiple ports. 1804 * Each port may be representor, we have to check the port 1805 * number and check the representors existence. 1806 */ 1807 if (nl_rdma >= 0) 1808 np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name); 1809 if (!np) 1810 DRV_LOG(WARNING, "can not get IB device \"%s\"" 1811 " ports number", ibv_match[0]->name); 1812 if (bd >= 0 && !np) { 1813 DRV_LOG(ERR, "can not get ports" 1814 " for bonding device"); 1815 rte_errno = ENOENT; 1816 ret = -rte_errno; 1817 goto exit; 1818 } 1819 } 1820 #ifndef HAVE_MLX5DV_DR_DEVX_PORT 1821 if (bd >= 0) { 1822 /* 1823 * This may happen if there is VF LAG kernel support and 1824 * application is compiled with older rdma_core library. 1825 */ 1826 DRV_LOG(ERR, 1827 "No kernel/verbs support for VF LAG bonding found."); 1828 rte_errno = ENOTSUP; 1829 ret = -rte_errno; 1830 goto exit; 1831 } 1832 #endif 1833 /* 1834 * Now we can determine the maximal 1835 * amount of devices to be spawned. 1836 */ 1837 list = mlx5_malloc(MLX5_MEM_ZERO, 1838 sizeof(struct mlx5_dev_spawn_data) * 1839 (np ? np : nd), 1840 RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY); 1841 if (!list) { 1842 DRV_LOG(ERR, "spawn data array allocation failure"); 1843 rte_errno = ENOMEM; 1844 ret = -rte_errno; 1845 goto exit; 1846 } 1847 if (bd >= 0 || np > 1) { 1848 /* 1849 * Single IB device with multiple ports found, 1850 * it may be E-Switch master device and representors. 1851 * We have to perform identification through the ports. 1852 */ 1853 MLX5_ASSERT(nl_rdma >= 0); 1854 MLX5_ASSERT(ns == 0); 1855 MLX5_ASSERT(nd == 1); 1856 MLX5_ASSERT(np); 1857 for (i = 1; i <= np; ++i) { 1858 list[ns].max_port = np; 1859 list[ns].phys_port = i; 1860 list[ns].phys_dev = ibv_match[0]; 1861 list[ns].eth_dev = NULL; 1862 list[ns].pci_dev = pci_dev; 1863 list[ns].pf_bond = bd; 1864 list[ns].ifindex = mlx5_nl_ifindex 1865 (nl_rdma, 1866 mlx5_os_get_dev_device_name 1867 (list[ns].phys_dev), i); 1868 if (!list[ns].ifindex) { 1869 /* 1870 * No network interface index found for the 1871 * specified port, it means there is no 1872 * representor on this port. It's OK, 1873 * there can be disabled ports, for example 1874 * if sriov_numvfs < sriov_totalvfs. 1875 */ 1876 continue; 1877 } 1878 ret = -1; 1879 if (nl_route >= 0) 1880 ret = mlx5_nl_switch_info 1881 (nl_route, 1882 list[ns].ifindex, 1883 &list[ns].info); 1884 if (ret || (!list[ns].info.representor && 1885 !list[ns].info.master)) { 1886 /* 1887 * We failed to recognize representors with 1888 * Netlink, let's try to perform the task 1889 * with sysfs. 1890 */ 1891 ret = mlx5_sysfs_switch_info 1892 (list[ns].ifindex, 1893 &list[ns].info); 1894 } 1895 if (!ret && bd >= 0) { 1896 switch (list[ns].info.name_type) { 1897 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1898 if (list[ns].info.port_name == bd) 1899 ns++; 1900 break; 1901 case MLX5_PHYS_PORT_NAME_TYPE_PFHPF: 1902 /* Fallthrough */ 1903 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1904 if (list[ns].info.pf_num == bd) 1905 ns++; 1906 break; 1907 default: 1908 break; 1909 } 1910 continue; 1911 } 1912 if (!ret && (list[ns].info.representor ^ 1913 list[ns].info.master)) 1914 ns++; 1915 } 1916 if (!ns) { 1917 DRV_LOG(ERR, 1918 "unable to recognize master/representors" 1919 " on the IB device with multiple ports"); 1920 rte_errno = ENOENT; 1921 ret = -rte_errno; 1922 goto exit; 1923 } 1924 } else { 1925 /* 1926 * The existence of several matching entries (nd > 1) means 1927 * port representors have been instantiated. No existing Verbs 1928 * call nor sysfs entries can tell them apart, this can only 1929 * be done through Netlink calls assuming kernel drivers are 1930 * recent enough to support them. 1931 * 1932 * In the event of identification failure through Netlink, 1933 * try again through sysfs, then: 1934 * 1935 * 1. A single IB device matches (nd == 1) with single 1936 * port (np=0/1) and is not a representor, assume 1937 * no switch support. 1938 * 1939 * 2. Otherwise no safe assumptions can be made; 1940 * complain louder and bail out. 1941 */ 1942 for (i = 0; i != nd; ++i) { 1943 memset(&list[ns].info, 0, sizeof(list[ns].info)); 1944 list[ns].max_port = 1; 1945 list[ns].phys_port = 1; 1946 list[ns].phys_dev = ibv_match[i]; 1947 list[ns].eth_dev = NULL; 1948 list[ns].pci_dev = pci_dev; 1949 list[ns].pf_bond = -1; 1950 list[ns].ifindex = 0; 1951 if (nl_rdma >= 0) 1952 list[ns].ifindex = mlx5_nl_ifindex 1953 (nl_rdma, 1954 mlx5_os_get_dev_device_name 1955 (list[ns].phys_dev), 1); 1956 if (!list[ns].ifindex) { 1957 char ifname[IF_NAMESIZE]; 1958 1959 /* 1960 * Netlink failed, it may happen with old 1961 * ib_core kernel driver (before 4.16). 1962 * We can assume there is old driver because 1963 * here we are processing single ports IB 1964 * devices. Let's try sysfs to retrieve 1965 * the ifindex. The method works for 1966 * master device only. 1967 */ 1968 if (nd > 1) { 1969 /* 1970 * Multiple devices found, assume 1971 * representors, can not distinguish 1972 * master/representor and retrieve 1973 * ifindex via sysfs. 1974 */ 1975 continue; 1976 } 1977 ret = mlx5_get_ifname_sysfs 1978 (ibv_match[i]->ibdev_path, ifname); 1979 if (!ret) 1980 list[ns].ifindex = 1981 if_nametoindex(ifname); 1982 if (!list[ns].ifindex) { 1983 /* 1984 * No network interface index found 1985 * for the specified device, it means 1986 * there it is neither representor 1987 * nor master. 1988 */ 1989 continue; 1990 } 1991 } 1992 ret = -1; 1993 if (nl_route >= 0) 1994 ret = mlx5_nl_switch_info 1995 (nl_route, 1996 list[ns].ifindex, 1997 &list[ns].info); 1998 if (ret || (!list[ns].info.representor && 1999 !list[ns].info.master)) { 2000 /* 2001 * We failed to recognize representors with 2002 * Netlink, let's try to perform the task 2003 * with sysfs. 2004 */ 2005 ret = mlx5_sysfs_switch_info 2006 (list[ns].ifindex, 2007 &list[ns].info); 2008 } 2009 if (!ret && (list[ns].info.representor ^ 2010 list[ns].info.master)) { 2011 ns++; 2012 } else if ((nd == 1) && 2013 !list[ns].info.representor && 2014 !list[ns].info.master) { 2015 /* 2016 * Single IB device with 2017 * one physical port and 2018 * attached network device. 2019 * May be SRIOV is not enabled 2020 * or there is no representors. 2021 */ 2022 DRV_LOG(INFO, "no E-Switch support detected"); 2023 ns++; 2024 break; 2025 } 2026 } 2027 if (!ns) { 2028 DRV_LOG(ERR, 2029 "unable to recognize master/representors" 2030 " on the multiple IB devices"); 2031 rte_errno = ENOENT; 2032 ret = -rte_errno; 2033 goto exit; 2034 } 2035 } 2036 MLX5_ASSERT(ns); 2037 /* 2038 * Sort list to probe devices in natural order for users convenience 2039 * (i.e. master first, then representors from lowest to highest ID). 2040 */ 2041 qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp); 2042 /* Device specific configuration. */ 2043 switch (pci_dev->id.device_id) { 2044 case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF: 2045 case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF: 2046 case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF: 2047 case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF: 2048 case PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF: 2049 case PCI_DEVICE_ID_MELLANOX_CONNECTX6VF: 2050 case PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF: 2051 dev_config_vf = 1; 2052 break; 2053 default: 2054 dev_config_vf = 0; 2055 break; 2056 } 2057 for (i = 0; i != ns; ++i) { 2058 uint32_t restore; 2059 2060 /* Default configuration. */ 2061 memset(&dev_config, 0, sizeof(struct mlx5_dev_config)); 2062 dev_config.vf = dev_config_vf; 2063 dev_config.mps = MLX5_ARG_UNSET; 2064 dev_config.dbnc = MLX5_ARG_UNSET; 2065 dev_config.rx_vec_en = 1; 2066 dev_config.txq_inline_max = MLX5_ARG_UNSET; 2067 dev_config.txq_inline_min = MLX5_ARG_UNSET; 2068 dev_config.txq_inline_mpw = MLX5_ARG_UNSET; 2069 dev_config.txqs_inline = MLX5_ARG_UNSET; 2070 dev_config.vf_nl_en = 1; 2071 dev_config.mr_ext_memseg_en = 1; 2072 dev_config.mprq.max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN; 2073 dev_config.mprq.min_rxqs_num = MLX5_MPRQ_MIN_RXQS; 2074 dev_config.dv_esw_en = 1; 2075 dev_config.dv_flow_en = 1; 2076 dev_config.decap_en = 1; 2077 dev_config.log_hp_size = MLX5_ARG_UNSET; 2078 list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device, 2079 &list[i], 2080 &dev_config); 2081 if (!list[i].eth_dev) { 2082 if (rte_errno != EBUSY && rte_errno != EEXIST) 2083 break; 2084 /* Device is disabled or already spawned. Ignore it. */ 2085 continue; 2086 } 2087 restore = list[i].eth_dev->data->dev_flags; 2088 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev); 2089 /* Restore non-PCI flags cleared by the above call. */ 2090 list[i].eth_dev->data->dev_flags |= restore; 2091 rte_eth_dev_probing_finish(list[i].eth_dev); 2092 } 2093 if (i != ns) { 2094 DRV_LOG(ERR, 2095 "probe of PCI device " PCI_PRI_FMT " aborted after" 2096 " encountering an error: %s", 2097 pci_dev->addr.domain, pci_dev->addr.bus, 2098 pci_dev->addr.devid, pci_dev->addr.function, 2099 strerror(rte_errno)); 2100 ret = -rte_errno; 2101 /* Roll back. */ 2102 while (i--) { 2103 if (!list[i].eth_dev) 2104 continue; 2105 mlx5_dev_close(list[i].eth_dev); 2106 /* mac_addrs must not be freed because in dev_private */ 2107 list[i].eth_dev->data->mac_addrs = NULL; 2108 claim_zero(rte_eth_dev_release_port(list[i].eth_dev)); 2109 } 2110 /* Restore original error. */ 2111 rte_errno = -ret; 2112 } else { 2113 ret = 0; 2114 } 2115 exit: 2116 /* 2117 * Do the routine cleanup: 2118 * - close opened Netlink sockets 2119 * - free allocated spawn data array 2120 * - free the Infiniband device list 2121 */ 2122 if (nl_rdma >= 0) 2123 close(nl_rdma); 2124 if (nl_route >= 0) 2125 close(nl_route); 2126 if (list) 2127 mlx5_free(list); 2128 MLX5_ASSERT(ibv_list); 2129 mlx5_glue->free_device_list(ibv_list); 2130 return ret; 2131 } 2132 2133 static int 2134 mlx5_config_doorbell_mapping_env(const struct mlx5_dev_config *config) 2135 { 2136 char *env; 2137 int value; 2138 2139 MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY); 2140 /* Get environment variable to store. */ 2141 env = getenv(MLX5_SHUT_UP_BF); 2142 value = env ? !!strcmp(env, "0") : MLX5_ARG_UNSET; 2143 if (config->dbnc == MLX5_ARG_UNSET) 2144 setenv(MLX5_SHUT_UP_BF, MLX5_SHUT_UP_BF_DEFAULT, 1); 2145 else 2146 setenv(MLX5_SHUT_UP_BF, 2147 config->dbnc == MLX5_TXDB_NCACHED ? "1" : "0", 1); 2148 return value; 2149 } 2150 2151 static void 2152 mlx5_restore_doorbell_mapping_env(int value) 2153 { 2154 MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY); 2155 /* Restore the original environment variable state. */ 2156 if (value == MLX5_ARG_UNSET) 2157 unsetenv(MLX5_SHUT_UP_BF); 2158 else 2159 setenv(MLX5_SHUT_UP_BF, value ? "1" : "0", 1); 2160 } 2161 2162 /** 2163 * Extract pdn of PD object using DV API. 2164 * 2165 * @param[in] pd 2166 * Pointer to the verbs PD object. 2167 * @param[out] pdn 2168 * Pointer to the PD object number variable. 2169 * 2170 * @return 2171 * 0 on success, error value otherwise. 2172 */ 2173 int 2174 mlx5_os_get_pdn(void *pd, uint32_t *pdn) 2175 { 2176 #ifdef HAVE_IBV_FLOW_DV_SUPPORT 2177 struct mlx5dv_obj obj; 2178 struct mlx5dv_pd pd_info; 2179 int ret = 0; 2180 2181 obj.pd.in = pd; 2182 obj.pd.out = &pd_info; 2183 ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_PD); 2184 if (ret) { 2185 DRV_LOG(DEBUG, "Fail to get PD object info"); 2186 return ret; 2187 } 2188 *pdn = pd_info.pdn; 2189 return 0; 2190 #else 2191 (void)pd; 2192 (void)pdn; 2193 return -ENOTSUP; 2194 #endif /* HAVE_IBV_FLOW_DV_SUPPORT */ 2195 } 2196 2197 /** 2198 * Function API to open IB device. 2199 * 2200 * This function calls the Linux glue APIs to open a device. 2201 * 2202 * @param[in] spawn 2203 * Pointer to the IB device attributes (name, port, etc). 2204 * @param[out] config 2205 * Pointer to device configuration structure. 2206 * @param[out] sh 2207 * Pointer to shared context structure. 2208 * 2209 * @return 2210 * 0 on success, a positive error value otherwise. 2211 */ 2212 int 2213 mlx5_os_open_device(const struct mlx5_dev_spawn_data *spawn, 2214 const struct mlx5_dev_config *config, 2215 struct mlx5_dev_ctx_shared *sh) 2216 { 2217 int dbmap_env; 2218 int err = 0; 2219 2220 sh->numa_node = spawn->pci_dev->device.numa_node; 2221 pthread_mutex_init(&sh->txpp.mutex, NULL); 2222 /* 2223 * Configure environment variable "MLX5_BF_SHUT_UP" 2224 * before the device creation. The rdma_core library 2225 * checks the variable at device creation and 2226 * stores the result internally. 2227 */ 2228 dbmap_env = mlx5_config_doorbell_mapping_env(config); 2229 /* Try to open IB device with DV first, then usual Verbs. */ 2230 errno = 0; 2231 sh->ctx = mlx5_glue->dv_open_device(spawn->phys_dev); 2232 if (sh->ctx) { 2233 sh->devx = 1; 2234 DRV_LOG(DEBUG, "DevX is supported"); 2235 /* The device is created, no need for environment. */ 2236 mlx5_restore_doorbell_mapping_env(dbmap_env); 2237 } else { 2238 /* The environment variable is still configured. */ 2239 sh->ctx = mlx5_glue->open_device(spawn->phys_dev); 2240 err = errno ? errno : ENODEV; 2241 /* 2242 * The environment variable is not needed anymore, 2243 * all device creation attempts are completed. 2244 */ 2245 mlx5_restore_doorbell_mapping_env(dbmap_env); 2246 if (!sh->ctx) 2247 return err; 2248 DRV_LOG(DEBUG, "DevX is NOT supported"); 2249 err = 0; 2250 } 2251 return err; 2252 } 2253 2254 /** 2255 * Install shared asynchronous device events handler. 2256 * This function is implemented to support event sharing 2257 * between multiple ports of single IB device. 2258 * 2259 * @param sh 2260 * Pointer to mlx5_dev_ctx_shared object. 2261 */ 2262 void 2263 mlx5_os_dev_shared_handler_install(struct mlx5_dev_ctx_shared *sh) 2264 { 2265 int ret; 2266 int flags; 2267 2268 sh->intr_handle.fd = -1; 2269 flags = fcntl(((struct ibv_context *)sh->ctx)->async_fd, F_GETFL); 2270 ret = fcntl(((struct ibv_context *)sh->ctx)->async_fd, 2271 F_SETFL, flags | O_NONBLOCK); 2272 if (ret) { 2273 DRV_LOG(INFO, "failed to change file descriptor async event" 2274 " queue"); 2275 } else { 2276 sh->intr_handle.fd = ((struct ibv_context *)sh->ctx)->async_fd; 2277 sh->intr_handle.type = RTE_INTR_HANDLE_EXT; 2278 if (rte_intr_callback_register(&sh->intr_handle, 2279 mlx5_dev_interrupt_handler, sh)) { 2280 DRV_LOG(INFO, "Fail to install the shared interrupt."); 2281 sh->intr_handle.fd = -1; 2282 } 2283 } 2284 if (sh->devx) { 2285 #ifdef HAVE_IBV_DEVX_ASYNC 2286 sh->intr_handle_devx.fd = -1; 2287 sh->devx_comp = 2288 (void *)mlx5_glue->devx_create_cmd_comp(sh->ctx); 2289 struct mlx5dv_devx_cmd_comp *devx_comp = sh->devx_comp; 2290 if (!devx_comp) { 2291 DRV_LOG(INFO, "failed to allocate devx_comp."); 2292 return; 2293 } 2294 flags = fcntl(devx_comp->fd, F_GETFL); 2295 ret = fcntl(devx_comp->fd, F_SETFL, flags | O_NONBLOCK); 2296 if (ret) { 2297 DRV_LOG(INFO, "failed to change file descriptor" 2298 " devx comp"); 2299 return; 2300 } 2301 sh->intr_handle_devx.fd = devx_comp->fd; 2302 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT; 2303 if (rte_intr_callback_register(&sh->intr_handle_devx, 2304 mlx5_dev_interrupt_handler_devx, sh)) { 2305 DRV_LOG(INFO, "Fail to install the devx shared" 2306 " interrupt."); 2307 sh->intr_handle_devx.fd = -1; 2308 } 2309 #endif /* HAVE_IBV_DEVX_ASYNC */ 2310 } 2311 } 2312 2313 /** 2314 * Uninstall shared asynchronous device events handler. 2315 * This function is implemented to support event sharing 2316 * between multiple ports of single IB device. 2317 * 2318 * @param dev 2319 * Pointer to mlx5_dev_ctx_shared object. 2320 */ 2321 void 2322 mlx5_os_dev_shared_handler_uninstall(struct mlx5_dev_ctx_shared *sh) 2323 { 2324 if (sh->intr_handle.fd >= 0) 2325 mlx5_intr_callback_unregister(&sh->intr_handle, 2326 mlx5_dev_interrupt_handler, sh); 2327 #ifdef HAVE_IBV_DEVX_ASYNC 2328 if (sh->intr_handle_devx.fd >= 0) 2329 rte_intr_callback_unregister(&sh->intr_handle_devx, 2330 mlx5_dev_interrupt_handler_devx, sh); 2331 if (sh->devx_comp) 2332 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp); 2333 #endif 2334 } 2335 2336 /** 2337 * Read statistics by a named counter. 2338 * 2339 * @param[in] priv 2340 * Pointer to the private device data structure. 2341 * @param[in] ctr_name 2342 * Pointer to the name of the statistic counter to read 2343 * @param[out] stat 2344 * Pointer to read statistic value. 2345 * @return 2346 * 0 on success and stat is valud, 1 if failed to read the value 2347 * rte_errno is set. 2348 * 2349 */ 2350 int 2351 mlx5_os_read_dev_stat(struct mlx5_priv *priv, const char *ctr_name, 2352 uint64_t *stat) 2353 { 2354 int fd; 2355 2356 if (priv->sh) { 2357 MKSTR(path, "%s/ports/%d/hw_counters/%s", 2358 priv->sh->ibdev_path, 2359 priv->dev_port, 2360 ctr_name); 2361 fd = open(path, O_RDONLY); 2362 /* 2363 * in switchdev the file location is not per port 2364 * but rather in <ibdev_path>/hw_counters/<file_name>. 2365 */ 2366 if (fd == -1) { 2367 MKSTR(path1, "%s/hw_counters/%s", 2368 priv->sh->ibdev_path, 2369 ctr_name); 2370 fd = open(path1, O_RDONLY); 2371 } 2372 if (fd != -1) { 2373 char buf[21] = {'\0'}; 2374 ssize_t n = read(fd, buf, sizeof(buf)); 2375 2376 close(fd); 2377 if (n != -1) { 2378 *stat = strtoull(buf, NULL, 10); 2379 return 0; 2380 } 2381 } 2382 } 2383 *stat = 0; 2384 return 1; 2385 } 2386 2387 /** 2388 * Set the reg_mr and dereg_mr call backs 2389 * 2390 * @param reg_mr_cb[out] 2391 * Pointer to reg_mr func 2392 * @param dereg_mr_cb[out] 2393 * Pointer to dereg_mr func 2394 * 2395 */ 2396 void 2397 mlx5_os_set_reg_mr_cb(mlx5_reg_mr_t *reg_mr_cb, 2398 mlx5_dereg_mr_t *dereg_mr_cb) 2399 { 2400 *reg_mr_cb = mlx5_verbs_ops.reg_mr; 2401 *dereg_mr_cb = mlx5_verbs_ops.dereg_mr; 2402 } 2403 2404 /** 2405 * Remove a MAC address from device 2406 * 2407 * @param dev 2408 * Pointer to Ethernet device structure. 2409 * @param index 2410 * MAC address index. 2411 */ 2412 void 2413 mlx5_os_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index) 2414 { 2415 struct mlx5_priv *priv = dev->data->dev_private; 2416 const int vf = priv->config.vf; 2417 2418 if (vf) 2419 mlx5_nl_mac_addr_remove(priv->nl_socket_route, 2420 mlx5_ifindex(dev), priv->mac_own, 2421 &dev->data->mac_addrs[index], index); 2422 } 2423 2424 /** 2425 * Adds a MAC address to the device 2426 * 2427 * @param dev 2428 * Pointer to Ethernet device structure. 2429 * @param mac_addr 2430 * MAC address to register. 2431 * @param index 2432 * MAC address index. 2433 * 2434 * @return 2435 * 0 on success, a negative errno value otherwise 2436 */ 2437 int 2438 mlx5_os_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac, 2439 uint32_t index) 2440 { 2441 struct mlx5_priv *priv = dev->data->dev_private; 2442 const int vf = priv->config.vf; 2443 int ret = 0; 2444 2445 if (vf) 2446 ret = mlx5_nl_mac_addr_add(priv->nl_socket_route, 2447 mlx5_ifindex(dev), priv->mac_own, 2448 mac, index); 2449 return ret; 2450 } 2451 2452 /** 2453 * Modify a VF MAC address 2454 * 2455 * @param priv 2456 * Pointer to device private data. 2457 * @param mac_addr 2458 * MAC address to modify into. 2459 * @param iface_idx 2460 * Net device interface index 2461 * @param vf_index 2462 * VF index 2463 * 2464 * @return 2465 * 0 on success, a negative errno value otherwise 2466 */ 2467 int 2468 mlx5_os_vf_mac_addr_modify(struct mlx5_priv *priv, 2469 unsigned int iface_idx, 2470 struct rte_ether_addr *mac_addr, 2471 int vf_index) 2472 { 2473 return mlx5_nl_vf_mac_addr_modify 2474 (priv->nl_socket_route, iface_idx, mac_addr, vf_index); 2475 } 2476 2477 /** 2478 * Set device promiscuous mode 2479 * 2480 * @param dev 2481 * Pointer to Ethernet device structure. 2482 * @param enable 2483 * 0 - promiscuous is disabled, otherwise - enabled 2484 * 2485 * @return 2486 * 0 on success, a negative error value otherwise 2487 */ 2488 int 2489 mlx5_os_set_promisc(struct rte_eth_dev *dev, int enable) 2490 { 2491 struct mlx5_priv *priv = dev->data->dev_private; 2492 2493 return mlx5_nl_promisc(priv->nl_socket_route, 2494 mlx5_ifindex(dev), !!enable); 2495 } 2496 2497 /** 2498 * Set device promiscuous mode 2499 * 2500 * @param dev 2501 * Pointer to Ethernet device structure. 2502 * @param enable 2503 * 0 - all multicase is disabled, otherwise - enabled 2504 * 2505 * @return 2506 * 0 on success, a negative error value otherwise 2507 */ 2508 int 2509 mlx5_os_set_allmulti(struct rte_eth_dev *dev, int enable) 2510 { 2511 struct mlx5_priv *priv = dev->data->dev_private; 2512 2513 return mlx5_nl_allmulti(priv->nl_socket_route, 2514 mlx5_ifindex(dev), !!enable); 2515 } 2516 2517 /** 2518 * Flush device MAC addresses 2519 * 2520 * @param dev 2521 * Pointer to Ethernet device structure. 2522 * 2523 */ 2524 void 2525 mlx5_os_mac_addr_flush(struct rte_eth_dev *dev) 2526 { 2527 struct mlx5_priv *priv = dev->data->dev_private; 2528 2529 mlx5_nl_mac_addr_flush(priv->nl_socket_route, mlx5_ifindex(dev), 2530 dev->data->mac_addrs, 2531 MLX5_MAX_MAC_ADDRESSES, priv->mac_own); 2532 } 2533 2534 const struct eth_dev_ops mlx5_os_dev_ops = { 2535 .dev_configure = mlx5_dev_configure, 2536 .dev_start = mlx5_dev_start, 2537 .dev_stop = mlx5_dev_stop, 2538 .dev_set_link_down = mlx5_set_link_down, 2539 .dev_set_link_up = mlx5_set_link_up, 2540 .dev_close = mlx5_dev_close, 2541 .promiscuous_enable = mlx5_promiscuous_enable, 2542 .promiscuous_disable = mlx5_promiscuous_disable, 2543 .allmulticast_enable = mlx5_allmulticast_enable, 2544 .allmulticast_disable = mlx5_allmulticast_disable, 2545 .link_update = mlx5_link_update, 2546 .stats_get = mlx5_stats_get, 2547 .stats_reset = mlx5_stats_reset, 2548 .xstats_get = mlx5_xstats_get, 2549 .xstats_reset = mlx5_xstats_reset, 2550 .xstats_get_names = mlx5_xstats_get_names, 2551 .fw_version_get = mlx5_fw_version_get, 2552 .dev_infos_get = mlx5_dev_infos_get, 2553 .read_clock = mlx5_txpp_read_clock, 2554 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get, 2555 .vlan_filter_set = mlx5_vlan_filter_set, 2556 .rx_queue_setup = mlx5_rx_queue_setup, 2557 .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup, 2558 .tx_queue_setup = mlx5_tx_queue_setup, 2559 .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup, 2560 .rx_queue_release = mlx5_rx_queue_release, 2561 .tx_queue_release = mlx5_tx_queue_release, 2562 .rx_queue_start = mlx5_rx_queue_start, 2563 .rx_queue_stop = mlx5_rx_queue_stop, 2564 .tx_queue_start = mlx5_tx_queue_start, 2565 .tx_queue_stop = mlx5_tx_queue_stop, 2566 .flow_ctrl_get = mlx5_dev_get_flow_ctrl, 2567 .flow_ctrl_set = mlx5_dev_set_flow_ctrl, 2568 .mac_addr_remove = mlx5_mac_addr_remove, 2569 .mac_addr_add = mlx5_mac_addr_add, 2570 .mac_addr_set = mlx5_mac_addr_set, 2571 .set_mc_addr_list = mlx5_set_mc_addr_list, 2572 .mtu_set = mlx5_dev_set_mtu, 2573 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set, 2574 .vlan_offload_set = mlx5_vlan_offload_set, 2575 .reta_update = mlx5_dev_rss_reta_update, 2576 .reta_query = mlx5_dev_rss_reta_query, 2577 .rss_hash_update = mlx5_rss_hash_update, 2578 .rss_hash_conf_get = mlx5_rss_hash_conf_get, 2579 .filter_ctrl = mlx5_dev_filter_ctrl, 2580 .rxq_info_get = mlx5_rxq_info_get, 2581 .txq_info_get = mlx5_txq_info_get, 2582 .rx_burst_mode_get = mlx5_rx_burst_mode_get, 2583 .tx_burst_mode_get = mlx5_tx_burst_mode_get, 2584 .rx_queue_intr_enable = mlx5_rx_intr_enable, 2585 .rx_queue_intr_disable = mlx5_rx_intr_disable, 2586 .is_removed = mlx5_is_removed, 2587 .udp_tunnel_port_add = mlx5_udp_tunnel_port_add, 2588 .get_module_info = mlx5_get_module_info, 2589 .get_module_eeprom = mlx5_get_module_eeprom, 2590 .hairpin_cap_get = mlx5_hairpin_cap_get, 2591 .mtr_ops_get = mlx5_flow_meter_ops_get, 2592 .hairpin_bind = mlx5_hairpin_bind, 2593 .hairpin_unbind = mlx5_hairpin_unbind, 2594 .hairpin_get_peer_ports = mlx5_hairpin_get_peer_ports, 2595 .hairpin_queue_peer_update = mlx5_hairpin_queue_peer_update, 2596 .hairpin_queue_peer_bind = mlx5_hairpin_queue_peer_bind, 2597 .hairpin_queue_peer_unbind = mlx5_hairpin_queue_peer_unbind, 2598 }; 2599 2600 /* Available operations from secondary process. */ 2601 const struct eth_dev_ops mlx5_os_dev_sec_ops = { 2602 .stats_get = mlx5_stats_get, 2603 .stats_reset = mlx5_stats_reset, 2604 .xstats_get = mlx5_xstats_get, 2605 .xstats_reset = mlx5_xstats_reset, 2606 .xstats_get_names = mlx5_xstats_get_names, 2607 .fw_version_get = mlx5_fw_version_get, 2608 .dev_infos_get = mlx5_dev_infos_get, 2609 .read_clock = mlx5_txpp_read_clock, 2610 .rx_queue_start = mlx5_rx_queue_start, 2611 .rx_queue_stop = mlx5_rx_queue_stop, 2612 .tx_queue_start = mlx5_tx_queue_start, 2613 .tx_queue_stop = mlx5_tx_queue_stop, 2614 .rxq_info_get = mlx5_rxq_info_get, 2615 .txq_info_get = mlx5_txq_info_get, 2616 .rx_burst_mode_get = mlx5_rx_burst_mode_get, 2617 .tx_burst_mode_get = mlx5_tx_burst_mode_get, 2618 .get_module_info = mlx5_get_module_info, 2619 .get_module_eeprom = mlx5_get_module_eeprom, 2620 }; 2621 2622 /* Available operations in flow isolated mode. */ 2623 const struct eth_dev_ops mlx5_os_dev_ops_isolate = { 2624 .dev_configure = mlx5_dev_configure, 2625 .dev_start = mlx5_dev_start, 2626 .dev_stop = mlx5_dev_stop, 2627 .dev_set_link_down = mlx5_set_link_down, 2628 .dev_set_link_up = mlx5_set_link_up, 2629 .dev_close = mlx5_dev_close, 2630 .promiscuous_enable = mlx5_promiscuous_enable, 2631 .promiscuous_disable = mlx5_promiscuous_disable, 2632 .allmulticast_enable = mlx5_allmulticast_enable, 2633 .allmulticast_disable = mlx5_allmulticast_disable, 2634 .link_update = mlx5_link_update, 2635 .stats_get = mlx5_stats_get, 2636 .stats_reset = mlx5_stats_reset, 2637 .xstats_get = mlx5_xstats_get, 2638 .xstats_reset = mlx5_xstats_reset, 2639 .xstats_get_names = mlx5_xstats_get_names, 2640 .fw_version_get = mlx5_fw_version_get, 2641 .dev_infos_get = mlx5_dev_infos_get, 2642 .read_clock = mlx5_txpp_read_clock, 2643 .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get, 2644 .vlan_filter_set = mlx5_vlan_filter_set, 2645 .rx_queue_setup = mlx5_rx_queue_setup, 2646 .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup, 2647 .tx_queue_setup = mlx5_tx_queue_setup, 2648 .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup, 2649 .rx_queue_release = mlx5_rx_queue_release, 2650 .tx_queue_release = mlx5_tx_queue_release, 2651 .rx_queue_start = mlx5_rx_queue_start, 2652 .rx_queue_stop = mlx5_rx_queue_stop, 2653 .tx_queue_start = mlx5_tx_queue_start, 2654 .tx_queue_stop = mlx5_tx_queue_stop, 2655 .flow_ctrl_get = mlx5_dev_get_flow_ctrl, 2656 .flow_ctrl_set = mlx5_dev_set_flow_ctrl, 2657 .mac_addr_remove = mlx5_mac_addr_remove, 2658 .mac_addr_add = mlx5_mac_addr_add, 2659 .mac_addr_set = mlx5_mac_addr_set, 2660 .set_mc_addr_list = mlx5_set_mc_addr_list, 2661 .mtu_set = mlx5_dev_set_mtu, 2662 .vlan_strip_queue_set = mlx5_vlan_strip_queue_set, 2663 .vlan_offload_set = mlx5_vlan_offload_set, 2664 .filter_ctrl = mlx5_dev_filter_ctrl, 2665 .rxq_info_get = mlx5_rxq_info_get, 2666 .txq_info_get = mlx5_txq_info_get, 2667 .rx_burst_mode_get = mlx5_rx_burst_mode_get, 2668 .tx_burst_mode_get = mlx5_tx_burst_mode_get, 2669 .rx_queue_intr_enable = mlx5_rx_intr_enable, 2670 .rx_queue_intr_disable = mlx5_rx_intr_disable, 2671 .is_removed = mlx5_is_removed, 2672 .get_module_info = mlx5_get_module_info, 2673 .get_module_eeprom = mlx5_get_module_eeprom, 2674 .hairpin_cap_get = mlx5_hairpin_cap_get, 2675 .mtr_ops_get = mlx5_flow_meter_ops_get, 2676 .hairpin_bind = mlx5_hairpin_bind, 2677 .hairpin_unbind = mlx5_hairpin_unbind, 2678 .hairpin_get_peer_ports = mlx5_hairpin_get_peer_ports, 2679 .hairpin_queue_peer_update = mlx5_hairpin_queue_peer_update, 2680 .hairpin_queue_peer_bind = mlx5_hairpin_queue_peer_bind, 2681 .hairpin_queue_peer_unbind = mlx5_hairpin_queue_peer_unbind, 2682 }; 2683