1 /*- 2 * BSD LICENSE 3 * 4 * Copyright 2016 6WIND S.A. 5 * Copyright 2016 Mellanox. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of 6WIND S.A. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/queue.h> 35 #include <string.h> 36 37 /* Verbs header. */ 38 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ 39 #ifdef PEDANTIC 40 #pragma GCC diagnostic ignored "-Wpedantic" 41 #endif 42 #include <infiniband/verbs.h> 43 #ifdef PEDANTIC 44 #pragma GCC diagnostic error "-Wpedantic" 45 #endif 46 47 #include <rte_ethdev.h> 48 #include <rte_flow.h> 49 #include <rte_flow_driver.h> 50 #include <rte_malloc.h> 51 52 #include "mlx5.h" 53 #include "mlx5_prm.h" 54 55 /* Number of Work Queue necessary for the DROP queue. */ 56 #define MLX5_DROP_WQ_N 4 57 58 static int 59 mlx5_flow_create_eth(const struct rte_flow_item *item, 60 const void *default_mask, 61 void *data); 62 63 static int 64 mlx5_flow_create_vlan(const struct rte_flow_item *item, 65 const void *default_mask, 66 void *data); 67 68 static int 69 mlx5_flow_create_ipv4(const struct rte_flow_item *item, 70 const void *default_mask, 71 void *data); 72 73 static int 74 mlx5_flow_create_ipv6(const struct rte_flow_item *item, 75 const void *default_mask, 76 void *data); 77 78 static int 79 mlx5_flow_create_udp(const struct rte_flow_item *item, 80 const void *default_mask, 81 void *data); 82 83 static int 84 mlx5_flow_create_tcp(const struct rte_flow_item *item, 85 const void *default_mask, 86 void *data); 87 88 static int 89 mlx5_flow_create_vxlan(const struct rte_flow_item *item, 90 const void *default_mask, 91 void *data); 92 93 struct rte_flow { 94 LIST_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */ 95 struct ibv_exp_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */ 96 struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */ 97 struct ibv_qp *qp; /**< Verbs queue pair. */ 98 struct ibv_exp_flow *ibv_flow; /**< Verbs flow. */ 99 struct ibv_exp_wq *wq; /**< Verbs work queue. */ 100 struct ibv_cq *cq; /**< Verbs completion queue. */ 101 uint16_t rxqs_n; /**< Number of queues in this flow, 0 if drop queue. */ 102 uint32_t mark:1; /**< Set if the flow is marked. */ 103 uint32_t drop:1; /**< Drop queue. */ 104 uint64_t hash_fields; /**< Fields that participate in the hash. */ 105 struct rxq *rxqs[]; /**< Pointer to the queues array. */ 106 }; 107 108 /** Static initializer for items. */ 109 #define ITEMS(...) \ 110 (const enum rte_flow_item_type []){ \ 111 __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \ 112 } 113 114 /** Structure to generate a simple graph of layers supported by the NIC. */ 115 struct mlx5_flow_items { 116 /** List of possible actions for these items. */ 117 const enum rte_flow_action_type *const actions; 118 /** Bit-masks corresponding to the possibilities for the item. */ 119 const void *mask; 120 /** 121 * Default bit-masks to use when item->mask is not provided. When 122 * \default_mask is also NULL, the full supported bit-mask (\mask) is 123 * used instead. 124 */ 125 const void *default_mask; 126 /** Bit-masks size in bytes. */ 127 const unsigned int mask_sz; 128 /** 129 * Conversion function from rte_flow to NIC specific flow. 130 * 131 * @param item 132 * rte_flow item to convert. 133 * @param default_mask 134 * Default bit-masks to use when item->mask is not provided. 135 * @param data 136 * Internal structure to store the conversion. 137 * 138 * @return 139 * 0 on success, negative value otherwise. 140 */ 141 int (*convert)(const struct rte_flow_item *item, 142 const void *default_mask, 143 void *data); 144 /** Size in bytes of the destination structure. */ 145 const unsigned int dst_sz; 146 /** List of possible following items. */ 147 const enum rte_flow_item_type *const items; 148 }; 149 150 /** Valid action for this PMD. */ 151 static const enum rte_flow_action_type valid_actions[] = { 152 RTE_FLOW_ACTION_TYPE_DROP, 153 RTE_FLOW_ACTION_TYPE_QUEUE, 154 RTE_FLOW_ACTION_TYPE_MARK, 155 RTE_FLOW_ACTION_TYPE_FLAG, 156 RTE_FLOW_ACTION_TYPE_END, 157 }; 158 159 /** Graph of supported items and associated actions. */ 160 static const struct mlx5_flow_items mlx5_flow_items[] = { 161 [RTE_FLOW_ITEM_TYPE_END] = { 162 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH, 163 RTE_FLOW_ITEM_TYPE_VXLAN), 164 }, 165 [RTE_FLOW_ITEM_TYPE_ETH] = { 166 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN, 167 RTE_FLOW_ITEM_TYPE_IPV4, 168 RTE_FLOW_ITEM_TYPE_IPV6), 169 .actions = valid_actions, 170 .mask = &(const struct rte_flow_item_eth){ 171 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff", 172 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff", 173 .type = -1, 174 }, 175 .default_mask = &rte_flow_item_eth_mask, 176 .mask_sz = sizeof(struct rte_flow_item_eth), 177 .convert = mlx5_flow_create_eth, 178 .dst_sz = sizeof(struct ibv_exp_flow_spec_eth), 179 }, 180 [RTE_FLOW_ITEM_TYPE_VLAN] = { 181 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4, 182 RTE_FLOW_ITEM_TYPE_IPV6), 183 .actions = valid_actions, 184 .mask = &(const struct rte_flow_item_vlan){ 185 .tci = -1, 186 }, 187 .default_mask = &rte_flow_item_vlan_mask, 188 .mask_sz = sizeof(struct rte_flow_item_vlan), 189 .convert = mlx5_flow_create_vlan, 190 .dst_sz = 0, 191 }, 192 [RTE_FLOW_ITEM_TYPE_IPV4] = { 193 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP, 194 RTE_FLOW_ITEM_TYPE_TCP), 195 .actions = valid_actions, 196 .mask = &(const struct rte_flow_item_ipv4){ 197 .hdr = { 198 .src_addr = -1, 199 .dst_addr = -1, 200 .type_of_service = -1, 201 .next_proto_id = -1, 202 }, 203 }, 204 .default_mask = &rte_flow_item_ipv4_mask, 205 .mask_sz = sizeof(struct rte_flow_item_ipv4), 206 .convert = mlx5_flow_create_ipv4, 207 .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv4_ext), 208 }, 209 [RTE_FLOW_ITEM_TYPE_IPV6] = { 210 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP, 211 RTE_FLOW_ITEM_TYPE_TCP), 212 .actions = valid_actions, 213 .mask = &(const struct rte_flow_item_ipv6){ 214 .hdr = { 215 .src_addr = { 216 0xff, 0xff, 0xff, 0xff, 217 0xff, 0xff, 0xff, 0xff, 218 0xff, 0xff, 0xff, 0xff, 219 0xff, 0xff, 0xff, 0xff, 220 }, 221 .dst_addr = { 222 0xff, 0xff, 0xff, 0xff, 223 0xff, 0xff, 0xff, 0xff, 224 0xff, 0xff, 0xff, 0xff, 225 0xff, 0xff, 0xff, 0xff, 226 }, 227 .vtc_flow = -1, 228 .proto = -1, 229 .hop_limits = -1, 230 }, 231 }, 232 .default_mask = &rte_flow_item_ipv6_mask, 233 .mask_sz = sizeof(struct rte_flow_item_ipv6), 234 .convert = mlx5_flow_create_ipv6, 235 .dst_sz = sizeof(struct ibv_exp_flow_spec_ipv6_ext), 236 }, 237 [RTE_FLOW_ITEM_TYPE_UDP] = { 238 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN), 239 .actions = valid_actions, 240 .mask = &(const struct rte_flow_item_udp){ 241 .hdr = { 242 .src_port = -1, 243 .dst_port = -1, 244 }, 245 }, 246 .default_mask = &rte_flow_item_udp_mask, 247 .mask_sz = sizeof(struct rte_flow_item_udp), 248 .convert = mlx5_flow_create_udp, 249 .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp), 250 }, 251 [RTE_FLOW_ITEM_TYPE_TCP] = { 252 .actions = valid_actions, 253 .mask = &(const struct rte_flow_item_tcp){ 254 .hdr = { 255 .src_port = -1, 256 .dst_port = -1, 257 }, 258 }, 259 .default_mask = &rte_flow_item_tcp_mask, 260 .mask_sz = sizeof(struct rte_flow_item_tcp), 261 .convert = mlx5_flow_create_tcp, 262 .dst_sz = sizeof(struct ibv_exp_flow_spec_tcp_udp), 263 }, 264 [RTE_FLOW_ITEM_TYPE_VXLAN] = { 265 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH), 266 .actions = valid_actions, 267 .mask = &(const struct rte_flow_item_vxlan){ 268 .vni = "\xff\xff\xff", 269 }, 270 .default_mask = &rte_flow_item_vxlan_mask, 271 .mask_sz = sizeof(struct rte_flow_item_vxlan), 272 .convert = mlx5_flow_create_vxlan, 273 .dst_sz = sizeof(struct ibv_exp_flow_spec_tunnel), 274 }, 275 }; 276 277 /** Structure to pass to the conversion function. */ 278 struct mlx5_flow { 279 struct ibv_exp_flow_attr *ibv_attr; /**< Verbs attribute. */ 280 unsigned int offset; /**< Offset in bytes in the ibv_attr buffer. */ 281 uint32_t inner; /**< Set once VXLAN is encountered. */ 282 uint64_t hash_fields; /**< Fields that participate in the hash. */ 283 }; 284 285 /** Structure for Drop queue. */ 286 struct rte_flow_drop { 287 struct ibv_exp_rwq_ind_table *ind_table; /**< Indirection table. */ 288 struct ibv_qp *qp; /**< Verbs queue pair. */ 289 struct ibv_exp_wq *wqs[MLX5_DROP_WQ_N]; /**< Verbs work queue. */ 290 struct ibv_cq *cq; /**< Verbs completion queue. */ 291 }; 292 293 struct mlx5_flow_action { 294 uint32_t queue:1; /**< Target is a receive queue. */ 295 uint32_t drop:1; /**< Target is a drop queue. */ 296 uint32_t mark:1; /**< Mark is present in the flow. */ 297 uint32_t mark_id; /**< Mark identifier. */ 298 uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */ 299 uint16_t queues_n; /**< Number of entries in queue[]. */ 300 }; 301 302 /** 303 * Check support for a given item. 304 * 305 * @param item[in] 306 * Item specification. 307 * @param mask[in] 308 * Bit-masks covering supported fields to compare with spec, last and mask in 309 * \item. 310 * @param size 311 * Bit-Mask size in bytes. 312 * 313 * @return 314 * 0 on success. 315 */ 316 static int 317 mlx5_flow_item_validate(const struct rte_flow_item *item, 318 const uint8_t *mask, unsigned int size) 319 { 320 int ret = 0; 321 322 if (!item->spec && (item->mask || item->last)) 323 return -1; 324 if (item->spec && !item->mask) { 325 unsigned int i; 326 const uint8_t *spec = item->spec; 327 328 for (i = 0; i < size; ++i) 329 if ((spec[i] | mask[i]) != mask[i]) 330 return -1; 331 } 332 if (item->last && !item->mask) { 333 unsigned int i; 334 const uint8_t *spec = item->last; 335 336 for (i = 0; i < size; ++i) 337 if ((spec[i] | mask[i]) != mask[i]) 338 return -1; 339 } 340 if (item->mask) { 341 unsigned int i; 342 const uint8_t *spec = item->mask; 343 344 for (i = 0; i < size; ++i) 345 if ((spec[i] | mask[i]) != mask[i]) 346 return -1; 347 } 348 if (item->spec && item->last) { 349 uint8_t spec[size]; 350 uint8_t last[size]; 351 const uint8_t *apply = mask; 352 unsigned int i; 353 354 if (item->mask) 355 apply = item->mask; 356 for (i = 0; i < size; ++i) { 357 spec[i] = ((const uint8_t *)item->spec)[i] & apply[i]; 358 last[i] = ((const uint8_t *)item->last)[i] & apply[i]; 359 } 360 ret = memcmp(spec, last, size); 361 } 362 return ret; 363 } 364 365 /** 366 * Validate a flow supported by the NIC. 367 * 368 * @param priv 369 * Pointer to private structure. 370 * @param[in] attr 371 * Flow rule attributes. 372 * @param[in] pattern 373 * Pattern specification (list terminated by the END pattern item). 374 * @param[in] actions 375 * Associated actions (list terminated by the END action). 376 * @param[out] error 377 * Perform verbose error reporting if not NULL. 378 * @param[in, out] flow 379 * Flow structure to update. 380 * @param[in, out] action 381 * Action structure to update. 382 * 383 * @return 384 * 0 on success, a negative errno value otherwise and rte_errno is set. 385 */ 386 static int 387 priv_flow_validate(struct priv *priv, 388 const struct rte_flow_attr *attr, 389 const struct rte_flow_item items[], 390 const struct rte_flow_action actions[], 391 struct rte_flow_error *error, 392 struct mlx5_flow *flow, 393 struct mlx5_flow_action *action) 394 { 395 const struct mlx5_flow_items *cur_item = mlx5_flow_items; 396 397 (void)priv; 398 if (attr->group) { 399 rte_flow_error_set(error, ENOTSUP, 400 RTE_FLOW_ERROR_TYPE_ATTR_GROUP, 401 NULL, 402 "groups are not supported"); 403 return -rte_errno; 404 } 405 if (attr->priority) { 406 rte_flow_error_set(error, ENOTSUP, 407 RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, 408 NULL, 409 "priorities are not supported"); 410 return -rte_errno; 411 } 412 if (attr->egress) { 413 rte_flow_error_set(error, ENOTSUP, 414 RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, 415 NULL, 416 "egress is not supported"); 417 return -rte_errno; 418 } 419 if (!attr->ingress) { 420 rte_flow_error_set(error, ENOTSUP, 421 RTE_FLOW_ERROR_TYPE_ATTR_INGRESS, 422 NULL, 423 "only ingress is supported"); 424 return -rte_errno; 425 } 426 for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) { 427 const struct mlx5_flow_items *token = NULL; 428 unsigned int i; 429 int err; 430 431 if (items->type == RTE_FLOW_ITEM_TYPE_VOID) 432 continue; 433 for (i = 0; 434 cur_item->items && 435 cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END; 436 ++i) { 437 if (cur_item->items[i] == items->type) { 438 token = &mlx5_flow_items[items->type]; 439 break; 440 } 441 } 442 if (!token) 443 goto exit_item_not_supported; 444 cur_item = token; 445 err = mlx5_flow_item_validate(items, 446 (const uint8_t *)cur_item->mask, 447 cur_item->mask_sz); 448 if (err) 449 goto exit_item_not_supported; 450 if (flow->ibv_attr && cur_item->convert) { 451 err = cur_item->convert(items, 452 (cur_item->default_mask ? 453 cur_item->default_mask : 454 cur_item->mask), 455 flow); 456 if (err) 457 goto exit_item_not_supported; 458 } else if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) { 459 if (flow->inner) { 460 rte_flow_error_set(error, ENOTSUP, 461 RTE_FLOW_ERROR_TYPE_ITEM, 462 items, 463 "cannot recognize multiple" 464 " VXLAN encapsulations"); 465 return -rte_errno; 466 } 467 flow->inner = 1; 468 } 469 flow->offset += cur_item->dst_sz; 470 } 471 for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) { 472 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) { 473 continue; 474 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) { 475 action->drop = 1; 476 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) { 477 const struct rte_flow_action_queue *queue = 478 (const struct rte_flow_action_queue *) 479 actions->conf; 480 uint16_t n; 481 uint16_t found = 0; 482 483 if (!queue || (queue->index > (priv->rxqs_n - 1))) 484 goto exit_action_not_supported; 485 for (n = 0; n < action->queues_n; ++n) { 486 if (action->queues[n] == queue->index) { 487 found = 1; 488 break; 489 } 490 } 491 if (action->queues_n > 1 && !found) { 492 rte_flow_error_set(error, ENOTSUP, 493 RTE_FLOW_ERROR_TYPE_ACTION, 494 actions, 495 "queue action not in RSS queues"); 496 return -rte_errno; 497 } 498 if (!found) { 499 action->queue = 1; 500 action->queues_n = 1; 501 action->queues[0] = queue->index; 502 } 503 } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) { 504 const struct rte_flow_action_rss *rss = 505 (const struct rte_flow_action_rss *) 506 actions->conf; 507 uint16_t n; 508 509 if (action->queues_n == 1) { 510 uint16_t found = 0; 511 512 assert(action->queues_n); 513 for (n = 0; n < rss->num; ++n) { 514 if (action->queues[0] == 515 rss->queue[n]) { 516 found = 1; 517 break; 518 } 519 } 520 if (!found) { 521 rte_flow_error_set(error, ENOTSUP, 522 RTE_FLOW_ERROR_TYPE_ACTION, 523 actions, 524 "queue action not in RSS" 525 " queues"); 526 return -rte_errno; 527 } 528 } 529 for (n = 0; n < rss->num; ++n) { 530 if (rss->queue[n] >= priv->rxqs_n) { 531 rte_flow_error_set(error, EINVAL, 532 RTE_FLOW_ERROR_TYPE_ACTION, 533 actions, 534 "queue id > number of" 535 " queues"); 536 return -rte_errno; 537 } 538 } 539 action->queue = 1; 540 for (n = 0; n < rss->num; ++n) 541 action->queues[n] = rss->queue[n]; 542 action->queues_n = rss->num; 543 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) { 544 const struct rte_flow_action_mark *mark = 545 (const struct rte_flow_action_mark *) 546 actions->conf; 547 548 if (!mark) { 549 rte_flow_error_set(error, EINVAL, 550 RTE_FLOW_ERROR_TYPE_ACTION, 551 actions, 552 "mark must be defined"); 553 return -rte_errno; 554 } else if (mark->id >= MLX5_FLOW_MARK_MAX) { 555 rte_flow_error_set(error, ENOTSUP, 556 RTE_FLOW_ERROR_TYPE_ACTION, 557 actions, 558 "mark must be between 0" 559 " and 16777199"); 560 return -rte_errno; 561 } 562 action->mark = 1; 563 action->mark_id = mark->id; 564 } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) { 565 action->mark = 1; 566 } else { 567 goto exit_action_not_supported; 568 } 569 } 570 if (action->mark && !flow->ibv_attr && !action->drop) 571 flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag); 572 if (!action->queue && !action->drop) { 573 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE, 574 NULL, "no valid action"); 575 return -rte_errno; 576 } 577 return 0; 578 exit_item_not_supported: 579 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, 580 items, "item not supported"); 581 return -rte_errno; 582 exit_action_not_supported: 583 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, 584 actions, "action not supported"); 585 return -rte_errno; 586 } 587 588 /** 589 * Validate a flow supported by the NIC. 590 * 591 * @see rte_flow_validate() 592 * @see rte_flow_ops 593 */ 594 int 595 mlx5_flow_validate(struct rte_eth_dev *dev, 596 const struct rte_flow_attr *attr, 597 const struct rte_flow_item items[], 598 const struct rte_flow_action actions[], 599 struct rte_flow_error *error) 600 { 601 struct priv *priv = dev->data->dev_private; 602 int ret; 603 struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr) }; 604 struct mlx5_flow_action action = { 605 .queue = 0, 606 .drop = 0, 607 .mark = 0, 608 .mark_id = MLX5_FLOW_MARK_DEFAULT, 609 .queues_n = 0, 610 }; 611 612 priv_lock(priv); 613 ret = priv_flow_validate(priv, attr, items, actions, error, &flow, 614 &action); 615 priv_unlock(priv); 616 return ret; 617 } 618 619 /** 620 * Convert Ethernet item to Verbs specification. 621 * 622 * @param item[in] 623 * Item specification. 624 * @param default_mask[in] 625 * Default bit-masks to use when item->mask is not provided. 626 * @param data[in, out] 627 * User structure. 628 */ 629 static int 630 mlx5_flow_create_eth(const struct rte_flow_item *item, 631 const void *default_mask, 632 void *data) 633 { 634 const struct rte_flow_item_eth *spec = item->spec; 635 const struct rte_flow_item_eth *mask = item->mask; 636 struct mlx5_flow *flow = (struct mlx5_flow *)data; 637 struct ibv_exp_flow_spec_eth *eth; 638 const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth); 639 unsigned int i; 640 641 ++flow->ibv_attr->num_of_specs; 642 flow->ibv_attr->priority = 2; 643 flow->hash_fields = 0; 644 eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 645 *eth = (struct ibv_exp_flow_spec_eth) { 646 .type = flow->inner | IBV_EXP_FLOW_SPEC_ETH, 647 .size = eth_size, 648 }; 649 if (!spec) 650 return 0; 651 if (!mask) 652 mask = default_mask; 653 memcpy(eth->val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN); 654 memcpy(eth->val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN); 655 eth->val.ether_type = spec->type; 656 memcpy(eth->mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN); 657 memcpy(eth->mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN); 658 eth->mask.ether_type = mask->type; 659 /* Remove unwanted bits from values. */ 660 for (i = 0; i < ETHER_ADDR_LEN; ++i) { 661 eth->val.dst_mac[i] &= eth->mask.dst_mac[i]; 662 eth->val.src_mac[i] &= eth->mask.src_mac[i]; 663 } 664 eth->val.ether_type &= eth->mask.ether_type; 665 return 0; 666 } 667 668 /** 669 * Convert VLAN item to Verbs specification. 670 * 671 * @param item[in] 672 * Item specification. 673 * @param default_mask[in] 674 * Default bit-masks to use when item->mask is not provided. 675 * @param data[in, out] 676 * User structure. 677 */ 678 static int 679 mlx5_flow_create_vlan(const struct rte_flow_item *item, 680 const void *default_mask, 681 void *data) 682 { 683 const struct rte_flow_item_vlan *spec = item->spec; 684 const struct rte_flow_item_vlan *mask = item->mask; 685 struct mlx5_flow *flow = (struct mlx5_flow *)data; 686 struct ibv_exp_flow_spec_eth *eth; 687 const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth); 688 689 eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset - eth_size); 690 if (!spec) 691 return 0; 692 if (!mask) 693 mask = default_mask; 694 eth->val.vlan_tag = spec->tci; 695 eth->mask.vlan_tag = mask->tci; 696 eth->val.vlan_tag &= eth->mask.vlan_tag; 697 return 0; 698 } 699 700 /** 701 * Convert IPv4 item to Verbs specification. 702 * 703 * @param item[in] 704 * Item specification. 705 * @param default_mask[in] 706 * Default bit-masks to use when item->mask is not provided. 707 * @param data[in, out] 708 * User structure. 709 */ 710 static int 711 mlx5_flow_create_ipv4(const struct rte_flow_item *item, 712 const void *default_mask, 713 void *data) 714 { 715 const struct rte_flow_item_ipv4 *spec = item->spec; 716 const struct rte_flow_item_ipv4 *mask = item->mask; 717 struct mlx5_flow *flow = (struct mlx5_flow *)data; 718 struct ibv_exp_flow_spec_ipv4_ext *ipv4; 719 unsigned int ipv4_size = sizeof(struct ibv_exp_flow_spec_ipv4_ext); 720 721 ++flow->ibv_attr->num_of_specs; 722 flow->ibv_attr->priority = 1; 723 flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV4 | 724 IBV_EXP_RX_HASH_DST_IPV4); 725 ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 726 *ipv4 = (struct ibv_exp_flow_spec_ipv4_ext) { 727 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV4_EXT, 728 .size = ipv4_size, 729 }; 730 if (!spec) 731 return 0; 732 if (!mask) 733 mask = default_mask; 734 ipv4->val = (struct ibv_exp_flow_ipv4_ext_filter){ 735 .src_ip = spec->hdr.src_addr, 736 .dst_ip = spec->hdr.dst_addr, 737 .proto = spec->hdr.next_proto_id, 738 .tos = spec->hdr.type_of_service, 739 }; 740 ipv4->mask = (struct ibv_exp_flow_ipv4_ext_filter){ 741 .src_ip = mask->hdr.src_addr, 742 .dst_ip = mask->hdr.dst_addr, 743 .proto = mask->hdr.next_proto_id, 744 .tos = mask->hdr.type_of_service, 745 }; 746 /* Remove unwanted bits from values. */ 747 ipv4->val.src_ip &= ipv4->mask.src_ip; 748 ipv4->val.dst_ip &= ipv4->mask.dst_ip; 749 ipv4->val.proto &= ipv4->mask.proto; 750 ipv4->val.tos &= ipv4->mask.tos; 751 return 0; 752 } 753 754 /** 755 * Convert IPv6 item to Verbs specification. 756 * 757 * @param item[in] 758 * Item specification. 759 * @param default_mask[in] 760 * Default bit-masks to use when item->mask is not provided. 761 * @param data[in, out] 762 * User structure. 763 */ 764 static int 765 mlx5_flow_create_ipv6(const struct rte_flow_item *item, 766 const void *default_mask, 767 void *data) 768 { 769 const struct rte_flow_item_ipv6 *spec = item->spec; 770 const struct rte_flow_item_ipv6 *mask = item->mask; 771 struct mlx5_flow *flow = (struct mlx5_flow *)data; 772 struct ibv_exp_flow_spec_ipv6_ext *ipv6; 773 unsigned int ipv6_size = sizeof(struct ibv_exp_flow_spec_ipv6_ext); 774 775 ++flow->ibv_attr->num_of_specs; 776 flow->ibv_attr->priority = 1; 777 flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV6 | 778 IBV_EXP_RX_HASH_DST_IPV6); 779 ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 780 *ipv6 = (struct ibv_exp_flow_spec_ipv6_ext) { 781 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV6_EXT, 782 .size = ipv6_size, 783 }; 784 if (!spec) 785 return 0; 786 if (!mask) 787 mask = default_mask; 788 memcpy(ipv6->val.src_ip, spec->hdr.src_addr, 789 RTE_DIM(ipv6->val.src_ip)); 790 memcpy(ipv6->val.dst_ip, spec->hdr.dst_addr, 791 RTE_DIM(ipv6->val.dst_ip)); 792 memcpy(ipv6->mask.src_ip, mask->hdr.src_addr, 793 RTE_DIM(ipv6->mask.src_ip)); 794 memcpy(ipv6->mask.dst_ip, mask->hdr.dst_addr, 795 RTE_DIM(ipv6->mask.dst_ip)); 796 ipv6->mask.flow_label = mask->hdr.vtc_flow; 797 ipv6->mask.next_hdr = mask->hdr.proto; 798 ipv6->mask.hop_limit = mask->hdr.hop_limits; 799 ipv6->val.flow_label &= ipv6->mask.flow_label; 800 ipv6->val.next_hdr &= ipv6->mask.next_hdr; 801 ipv6->val.hop_limit &= ipv6->mask.hop_limit; 802 return 0; 803 } 804 805 /** 806 * Convert UDP item to Verbs specification. 807 * 808 * @param item[in] 809 * Item specification. 810 * @param default_mask[in] 811 * Default bit-masks to use when item->mask is not provided. 812 * @param data[in, out] 813 * User structure. 814 */ 815 static int 816 mlx5_flow_create_udp(const struct rte_flow_item *item, 817 const void *default_mask, 818 void *data) 819 { 820 const struct rte_flow_item_udp *spec = item->spec; 821 const struct rte_flow_item_udp *mask = item->mask; 822 struct mlx5_flow *flow = (struct mlx5_flow *)data; 823 struct ibv_exp_flow_spec_tcp_udp *udp; 824 unsigned int udp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp); 825 826 ++flow->ibv_attr->num_of_specs; 827 flow->ibv_attr->priority = 0; 828 flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_UDP | 829 IBV_EXP_RX_HASH_DST_PORT_UDP); 830 udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 831 *udp = (struct ibv_exp_flow_spec_tcp_udp) { 832 .type = flow->inner | IBV_EXP_FLOW_SPEC_UDP, 833 .size = udp_size, 834 }; 835 if (!spec) 836 return 0; 837 if (!mask) 838 mask = default_mask; 839 udp->val.dst_port = spec->hdr.dst_port; 840 udp->val.src_port = spec->hdr.src_port; 841 udp->mask.dst_port = mask->hdr.dst_port; 842 udp->mask.src_port = mask->hdr.src_port; 843 /* Remove unwanted bits from values. */ 844 udp->val.src_port &= udp->mask.src_port; 845 udp->val.dst_port &= udp->mask.dst_port; 846 return 0; 847 } 848 849 /** 850 * Convert TCP item to Verbs specification. 851 * 852 * @param item[in] 853 * Item specification. 854 * @param default_mask[in] 855 * Default bit-masks to use when item->mask is not provided. 856 * @param data[in, out] 857 * User structure. 858 */ 859 static int 860 mlx5_flow_create_tcp(const struct rte_flow_item *item, 861 const void *default_mask, 862 void *data) 863 { 864 const struct rte_flow_item_tcp *spec = item->spec; 865 const struct rte_flow_item_tcp *mask = item->mask; 866 struct mlx5_flow *flow = (struct mlx5_flow *)data; 867 struct ibv_exp_flow_spec_tcp_udp *tcp; 868 unsigned int tcp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp); 869 870 ++flow->ibv_attr->num_of_specs; 871 flow->ibv_attr->priority = 0; 872 flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_TCP | 873 IBV_EXP_RX_HASH_DST_PORT_TCP); 874 tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 875 *tcp = (struct ibv_exp_flow_spec_tcp_udp) { 876 .type = flow->inner | IBV_EXP_FLOW_SPEC_TCP, 877 .size = tcp_size, 878 }; 879 if (!spec) 880 return 0; 881 if (!mask) 882 mask = default_mask; 883 tcp->val.dst_port = spec->hdr.dst_port; 884 tcp->val.src_port = spec->hdr.src_port; 885 tcp->mask.dst_port = mask->hdr.dst_port; 886 tcp->mask.src_port = mask->hdr.src_port; 887 /* Remove unwanted bits from values. */ 888 tcp->val.src_port &= tcp->mask.src_port; 889 tcp->val.dst_port &= tcp->mask.dst_port; 890 return 0; 891 } 892 893 /** 894 * Convert VXLAN item to Verbs specification. 895 * 896 * @param item[in] 897 * Item specification. 898 * @param default_mask[in] 899 * Default bit-masks to use when item->mask is not provided. 900 * @param data[in, out] 901 * User structure. 902 */ 903 static int 904 mlx5_flow_create_vxlan(const struct rte_flow_item *item, 905 const void *default_mask, 906 void *data) 907 { 908 const struct rte_flow_item_vxlan *spec = item->spec; 909 const struct rte_flow_item_vxlan *mask = item->mask; 910 struct mlx5_flow *flow = (struct mlx5_flow *)data; 911 struct ibv_exp_flow_spec_tunnel *vxlan; 912 unsigned int size = sizeof(struct ibv_exp_flow_spec_tunnel); 913 union vni { 914 uint32_t vlan_id; 915 uint8_t vni[4]; 916 } id; 917 918 ++flow->ibv_attr->num_of_specs; 919 flow->ibv_attr->priority = 0; 920 id.vni[0] = 0; 921 vxlan = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 922 *vxlan = (struct ibv_exp_flow_spec_tunnel) { 923 .type = flow->inner | IBV_EXP_FLOW_SPEC_VXLAN_TUNNEL, 924 .size = size, 925 }; 926 flow->inner = IBV_EXP_FLOW_SPEC_INNER; 927 if (!spec) 928 return 0; 929 if (!mask) 930 mask = default_mask; 931 memcpy(&id.vni[1], spec->vni, 3); 932 vxlan->val.tunnel_id = id.vlan_id; 933 memcpy(&id.vni[1], mask->vni, 3); 934 vxlan->mask.tunnel_id = id.vlan_id; 935 /* Remove unwanted bits from values. */ 936 vxlan->val.tunnel_id &= vxlan->mask.tunnel_id; 937 return 0; 938 } 939 940 /** 941 * Convert mark/flag action to Verbs specification. 942 * 943 * @param flow 944 * Pointer to MLX5 flow structure. 945 * @param mark_id 946 * Mark identifier. 947 */ 948 static int 949 mlx5_flow_create_flag_mark(struct mlx5_flow *flow, uint32_t mark_id) 950 { 951 struct ibv_exp_flow_spec_action_tag *tag; 952 unsigned int size = sizeof(struct ibv_exp_flow_spec_action_tag); 953 954 tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 955 *tag = (struct ibv_exp_flow_spec_action_tag){ 956 .type = IBV_EXP_FLOW_SPEC_ACTION_TAG, 957 .size = size, 958 .tag_id = mlx5_flow_mark_set(mark_id), 959 }; 960 ++flow->ibv_attr->num_of_specs; 961 return 0; 962 } 963 964 /** 965 * Complete flow rule creation with a drop queue. 966 * 967 * @param priv 968 * Pointer to private structure. 969 * @param flow 970 * MLX5 flow attributes (filled by mlx5_flow_validate()). 971 * @param[out] error 972 * Perform verbose error reporting if not NULL. 973 * 974 * @return 975 * A flow if the rule could be created. 976 */ 977 static struct rte_flow * 978 priv_flow_create_action_queue_drop(struct priv *priv, 979 struct mlx5_flow *flow, 980 struct rte_flow_error *error) 981 { 982 struct rte_flow *rte_flow; 983 984 assert(priv->pd); 985 assert(priv->ctx); 986 rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0); 987 if (!rte_flow) { 988 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 989 NULL, "cannot allocate flow memory"); 990 return NULL; 991 } 992 rte_flow->drop = 1; 993 rte_flow->ibv_attr = flow->ibv_attr; 994 rte_flow->qp = priv->flow_drop_queue->qp; 995 if (!priv->started) 996 return rte_flow; 997 rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp, 998 rte_flow->ibv_attr); 999 if (!rte_flow->ibv_flow) { 1000 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1001 NULL, "flow rule creation failure"); 1002 goto error; 1003 } 1004 return rte_flow; 1005 error: 1006 assert(rte_flow); 1007 rte_free(rte_flow); 1008 return NULL; 1009 } 1010 1011 /** 1012 * Complete flow rule creation. 1013 * 1014 * @param priv 1015 * Pointer to private structure. 1016 * @param flow 1017 * MLX5 flow attributes (filled by mlx5_flow_validate()). 1018 * @param action 1019 * Target action structure. 1020 * @param[out] error 1021 * Perform verbose error reporting if not NULL. 1022 * 1023 * @return 1024 * A flow if the rule could be created. 1025 */ 1026 static struct rte_flow * 1027 priv_flow_create_action_queue(struct priv *priv, 1028 struct mlx5_flow *flow, 1029 struct mlx5_flow_action *action, 1030 struct rte_flow_error *error) 1031 { 1032 struct rte_flow *rte_flow; 1033 unsigned int i; 1034 unsigned int j; 1035 const unsigned int wqs_n = 1 << log2above(action->queues_n); 1036 struct ibv_exp_wq *wqs[wqs_n]; 1037 1038 assert(priv->pd); 1039 assert(priv->ctx); 1040 assert(!action->drop); 1041 rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow) + 1042 sizeof(*rte_flow->rxqs) * action->queues_n, 0); 1043 if (!rte_flow) { 1044 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1045 NULL, "cannot allocate flow memory"); 1046 return NULL; 1047 } 1048 for (i = 0; i < action->queues_n; ++i) { 1049 struct rxq_ctrl *rxq; 1050 1051 rxq = container_of((*priv->rxqs)[action->queues[i]], 1052 struct rxq_ctrl, rxq); 1053 wqs[i] = rxq->wq; 1054 rte_flow->rxqs[i] = &rxq->rxq; 1055 ++rte_flow->rxqs_n; 1056 rxq->rxq.mark |= action->mark; 1057 } 1058 /* finalise indirection table. */ 1059 for (j = 0; i < wqs_n; ++i, ++j) { 1060 wqs[i] = wqs[j]; 1061 if (j == action->queues_n) 1062 j = 0; 1063 } 1064 rte_flow->mark = action->mark; 1065 rte_flow->ibv_attr = flow->ibv_attr; 1066 rte_flow->hash_fields = flow->hash_fields; 1067 rte_flow->ind_table = ibv_exp_create_rwq_ind_table( 1068 priv->ctx, 1069 &(struct ibv_exp_rwq_ind_table_init_attr){ 1070 .pd = priv->pd, 1071 .log_ind_tbl_size = log2above(action->queues_n), 1072 .ind_tbl = wqs, 1073 .comp_mask = 0, 1074 }); 1075 if (!rte_flow->ind_table) { 1076 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1077 NULL, "cannot allocate indirection table"); 1078 goto error; 1079 } 1080 rte_flow->qp = ibv_exp_create_qp( 1081 priv->ctx, 1082 &(struct ibv_exp_qp_init_attr){ 1083 .qp_type = IBV_QPT_RAW_PACKET, 1084 .comp_mask = 1085 IBV_EXP_QP_INIT_ATTR_PD | 1086 IBV_EXP_QP_INIT_ATTR_PORT | 1087 IBV_EXP_QP_INIT_ATTR_RX_HASH, 1088 .pd = priv->pd, 1089 .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){ 1090 .rx_hash_function = 1091 IBV_EXP_RX_HASH_FUNC_TOEPLITZ, 1092 .rx_hash_key_len = rss_hash_default_key_len, 1093 .rx_hash_key = rss_hash_default_key, 1094 .rx_hash_fields_mask = rte_flow->hash_fields, 1095 .rwq_ind_tbl = rte_flow->ind_table, 1096 }, 1097 .port_num = priv->port, 1098 }); 1099 if (!rte_flow->qp) { 1100 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1101 NULL, "cannot allocate QP"); 1102 goto error; 1103 } 1104 if (!priv->started) 1105 return rte_flow; 1106 rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp, 1107 rte_flow->ibv_attr); 1108 if (!rte_flow->ibv_flow) { 1109 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1110 NULL, "flow rule creation failure"); 1111 goto error; 1112 } 1113 return rte_flow; 1114 error: 1115 assert(rte_flow); 1116 if (rte_flow->qp) 1117 ibv_destroy_qp(rte_flow->qp); 1118 if (rte_flow->ind_table) 1119 ibv_exp_destroy_rwq_ind_table(rte_flow->ind_table); 1120 rte_free(rte_flow); 1121 return NULL; 1122 } 1123 1124 /** 1125 * Convert a flow. 1126 * 1127 * @param priv 1128 * Pointer to private structure. 1129 * @param[in] attr 1130 * Flow rule attributes. 1131 * @param[in] pattern 1132 * Pattern specification (list terminated by the END pattern item). 1133 * @param[in] actions 1134 * Associated actions (list terminated by the END action). 1135 * @param[out] error 1136 * Perform verbose error reporting if not NULL. 1137 * 1138 * @return 1139 * A flow on success, NULL otherwise. 1140 */ 1141 static struct rte_flow * 1142 priv_flow_create(struct priv *priv, 1143 const struct rte_flow_attr *attr, 1144 const struct rte_flow_item items[], 1145 const struct rte_flow_action actions[], 1146 struct rte_flow_error *error) 1147 { 1148 struct rte_flow *rte_flow; 1149 struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr), }; 1150 struct mlx5_flow_action action = { 1151 .queue = 0, 1152 .drop = 0, 1153 .mark = 0, 1154 .mark_id = MLX5_FLOW_MARK_DEFAULT, 1155 .queues_n = 0, 1156 }; 1157 int err; 1158 1159 err = priv_flow_validate(priv, attr, items, actions, error, &flow, 1160 &action); 1161 if (err) 1162 goto exit; 1163 flow.ibv_attr = rte_malloc(__func__, flow.offset, 0); 1164 flow.offset = sizeof(struct ibv_exp_flow_attr); 1165 if (!flow.ibv_attr) { 1166 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1167 NULL, "cannot allocate ibv_attr memory"); 1168 goto exit; 1169 } 1170 *flow.ibv_attr = (struct ibv_exp_flow_attr){ 1171 .type = IBV_EXP_FLOW_ATTR_NORMAL, 1172 .size = sizeof(struct ibv_exp_flow_attr), 1173 .priority = attr->priority, 1174 .num_of_specs = 0, 1175 .port = 0, 1176 .flags = 0, 1177 .reserved = 0, 1178 }; 1179 flow.inner = 0; 1180 flow.hash_fields = 0; 1181 claim_zero(priv_flow_validate(priv, attr, items, actions, 1182 error, &flow, &action)); 1183 if (action.mark && !action.drop) { 1184 mlx5_flow_create_flag_mark(&flow, action.mark_id); 1185 flow.offset += sizeof(struct ibv_exp_flow_spec_action_tag); 1186 } 1187 if (action.drop) 1188 rte_flow = 1189 priv_flow_create_action_queue_drop(priv, &flow, error); 1190 else 1191 rte_flow = priv_flow_create_action_queue(priv, &flow, &action, 1192 error); 1193 if (!rte_flow) 1194 goto exit; 1195 return rte_flow; 1196 exit: 1197 rte_free(flow.ibv_attr); 1198 return NULL; 1199 } 1200 1201 /** 1202 * Create a flow. 1203 * 1204 * @see rte_flow_create() 1205 * @see rte_flow_ops 1206 */ 1207 struct rte_flow * 1208 mlx5_flow_create(struct rte_eth_dev *dev, 1209 const struct rte_flow_attr *attr, 1210 const struct rte_flow_item items[], 1211 const struct rte_flow_action actions[], 1212 struct rte_flow_error *error) 1213 { 1214 struct priv *priv = dev->data->dev_private; 1215 struct rte_flow *flow; 1216 1217 priv_lock(priv); 1218 flow = priv_flow_create(priv, attr, items, actions, error); 1219 if (flow) { 1220 LIST_INSERT_HEAD(&priv->flows, flow, next); 1221 DEBUG("Flow created %p", (void *)flow); 1222 } 1223 priv_unlock(priv); 1224 return flow; 1225 } 1226 1227 /** 1228 * Destroy a flow. 1229 * 1230 * @param priv 1231 * Pointer to private structure. 1232 * @param[in] flow 1233 * Flow to destroy. 1234 */ 1235 static void 1236 priv_flow_destroy(struct priv *priv, 1237 struct rte_flow *flow) 1238 { 1239 (void)priv; 1240 LIST_REMOVE(flow, next); 1241 if (flow->ibv_flow) 1242 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow)); 1243 if (flow->drop) 1244 goto free; 1245 if (flow->qp) 1246 claim_zero(ibv_destroy_qp(flow->qp)); 1247 if (flow->ind_table) 1248 claim_zero(ibv_exp_destroy_rwq_ind_table(flow->ind_table)); 1249 if (flow->drop && flow->wq) 1250 claim_zero(ibv_exp_destroy_wq(flow->wq)); 1251 if (flow->drop && flow->cq) 1252 claim_zero(ibv_destroy_cq(flow->cq)); 1253 if (flow->mark) { 1254 struct rte_flow *tmp; 1255 struct rxq *rxq; 1256 uint32_t mark_n = 0; 1257 uint32_t queue_n; 1258 1259 /* 1260 * To remove the mark from the queue, the queue must not be 1261 * present in any other marked flow (RSS or not). 1262 */ 1263 for (queue_n = 0; queue_n < flow->rxqs_n; ++queue_n) { 1264 rxq = flow->rxqs[queue_n]; 1265 for (tmp = LIST_FIRST(&priv->flows); 1266 tmp; 1267 tmp = LIST_NEXT(tmp, next)) { 1268 uint32_t tqueue_n; 1269 1270 if (tmp->drop) 1271 continue; 1272 for (tqueue_n = 0; 1273 tqueue_n < tmp->rxqs_n; 1274 ++tqueue_n) { 1275 struct rxq *trxq; 1276 1277 trxq = tmp->rxqs[tqueue_n]; 1278 if (rxq == trxq) 1279 ++mark_n; 1280 } 1281 } 1282 rxq->mark = !!mark_n; 1283 } 1284 } 1285 free: 1286 rte_free(flow->ibv_attr); 1287 DEBUG("Flow destroyed %p", (void *)flow); 1288 rte_free(flow); 1289 } 1290 1291 /** 1292 * Destroy a flow. 1293 * 1294 * @see rte_flow_destroy() 1295 * @see rte_flow_ops 1296 */ 1297 int 1298 mlx5_flow_destroy(struct rte_eth_dev *dev, 1299 struct rte_flow *flow, 1300 struct rte_flow_error *error) 1301 { 1302 struct priv *priv = dev->data->dev_private; 1303 1304 (void)error; 1305 priv_lock(priv); 1306 priv_flow_destroy(priv, flow); 1307 priv_unlock(priv); 1308 return 0; 1309 } 1310 1311 /** 1312 * Destroy all flows. 1313 * 1314 * @param priv 1315 * Pointer to private structure. 1316 */ 1317 static void 1318 priv_flow_flush(struct priv *priv) 1319 { 1320 while (!LIST_EMPTY(&priv->flows)) { 1321 struct rte_flow *flow; 1322 1323 flow = LIST_FIRST(&priv->flows); 1324 priv_flow_destroy(priv, flow); 1325 } 1326 } 1327 1328 /** 1329 * Destroy all flows. 1330 * 1331 * @see rte_flow_flush() 1332 * @see rte_flow_ops 1333 */ 1334 int 1335 mlx5_flow_flush(struct rte_eth_dev *dev, 1336 struct rte_flow_error *error) 1337 { 1338 struct priv *priv = dev->data->dev_private; 1339 1340 (void)error; 1341 priv_lock(priv); 1342 priv_flow_flush(priv); 1343 priv_unlock(priv); 1344 return 0; 1345 } 1346 1347 /** 1348 * Create drop queue. 1349 * 1350 * @param priv 1351 * Pointer to private structure. 1352 * 1353 * @return 1354 * 0 on success. 1355 */ 1356 static int 1357 priv_flow_create_drop_queue(struct priv *priv) 1358 { 1359 struct rte_flow_drop *fdq = NULL; 1360 unsigned int i; 1361 1362 assert(priv->pd); 1363 assert(priv->ctx); 1364 fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0); 1365 if (!fdq) { 1366 WARN("cannot allocate memory for drop queue"); 1367 goto error; 1368 } 1369 fdq->cq = ibv_exp_create_cq(priv->ctx, 1, NULL, NULL, 0, 1370 &(struct ibv_exp_cq_init_attr){ 1371 .comp_mask = 0, 1372 }); 1373 if (!fdq->cq) { 1374 WARN("cannot allocate CQ for drop queue"); 1375 goto error; 1376 } 1377 for (i = 0; i != MLX5_DROP_WQ_N; ++i) { 1378 fdq->wqs[i] = ibv_exp_create_wq(priv->ctx, 1379 &(struct ibv_exp_wq_init_attr){ 1380 .wq_type = IBV_EXP_WQT_RQ, 1381 .max_recv_wr = 1, 1382 .max_recv_sge = 1, 1383 .pd = priv->pd, 1384 .cq = fdq->cq, 1385 }); 1386 if (!fdq->wqs[i]) { 1387 WARN("cannot allocate WQ for drop queue"); 1388 goto error; 1389 } 1390 } 1391 fdq->ind_table = ibv_exp_create_rwq_ind_table(priv->ctx, 1392 &(struct ibv_exp_rwq_ind_table_init_attr){ 1393 .pd = priv->pd, 1394 .log_ind_tbl_size = 0, 1395 .ind_tbl = fdq->wqs, 1396 .comp_mask = 0, 1397 }); 1398 if (!fdq->ind_table) { 1399 WARN("cannot allocate indirection table for drop queue"); 1400 goto error; 1401 } 1402 fdq->qp = ibv_exp_create_qp(priv->ctx, 1403 &(struct ibv_exp_qp_init_attr){ 1404 .qp_type = IBV_QPT_RAW_PACKET, 1405 .comp_mask = 1406 IBV_EXP_QP_INIT_ATTR_PD | 1407 IBV_EXP_QP_INIT_ATTR_PORT | 1408 IBV_EXP_QP_INIT_ATTR_RX_HASH, 1409 .pd = priv->pd, 1410 .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){ 1411 .rx_hash_function = 1412 IBV_EXP_RX_HASH_FUNC_TOEPLITZ, 1413 .rx_hash_key_len = rss_hash_default_key_len, 1414 .rx_hash_key = rss_hash_default_key, 1415 .rx_hash_fields_mask = 0, 1416 .rwq_ind_tbl = fdq->ind_table, 1417 }, 1418 .port_num = priv->port, 1419 }); 1420 if (!fdq->qp) { 1421 WARN("cannot allocate QP for drop queue"); 1422 goto error; 1423 } 1424 priv->flow_drop_queue = fdq; 1425 return 0; 1426 error: 1427 if (fdq->qp) 1428 claim_zero(ibv_destroy_qp(fdq->qp)); 1429 if (fdq->ind_table) 1430 claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table)); 1431 for (i = 0; i != MLX5_DROP_WQ_N; ++i) { 1432 if (fdq->wqs[i]) 1433 claim_zero(ibv_exp_destroy_wq(fdq->wqs[i])); 1434 } 1435 if (fdq->cq) 1436 claim_zero(ibv_destroy_cq(fdq->cq)); 1437 if (fdq) 1438 rte_free(fdq); 1439 priv->flow_drop_queue = NULL; 1440 return -1; 1441 } 1442 1443 /** 1444 * Delete drop queue. 1445 * 1446 * @param priv 1447 * Pointer to private structure. 1448 */ 1449 static void 1450 priv_flow_delete_drop_queue(struct priv *priv) 1451 { 1452 struct rte_flow_drop *fdq = priv->flow_drop_queue; 1453 unsigned int i; 1454 1455 claim_zero(ibv_destroy_qp(fdq->qp)); 1456 claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table)); 1457 for (i = 0; i != MLX5_DROP_WQ_N; ++i) { 1458 assert(fdq->wqs[i]); 1459 claim_zero(ibv_exp_destroy_wq(fdq->wqs[i])); 1460 } 1461 claim_zero(ibv_destroy_cq(fdq->cq)); 1462 rte_free(fdq); 1463 priv->flow_drop_queue = NULL; 1464 } 1465 1466 /** 1467 * Remove all flows. 1468 * 1469 * Called by dev_stop() to remove all flows. 1470 * 1471 * @param priv 1472 * Pointer to private structure. 1473 */ 1474 void 1475 priv_flow_stop(struct priv *priv) 1476 { 1477 struct rte_flow *flow; 1478 1479 for (flow = LIST_FIRST(&priv->flows); 1480 flow; 1481 flow = LIST_NEXT(flow, next)) { 1482 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow)); 1483 flow->ibv_flow = NULL; 1484 if (flow->mark) { 1485 unsigned int n; 1486 1487 for (n = 0; n < flow->rxqs_n; ++n) 1488 flow->rxqs[n]->mark = 0; 1489 } 1490 DEBUG("Flow %p removed", (void *)flow); 1491 } 1492 priv_flow_delete_drop_queue(priv); 1493 } 1494 1495 /** 1496 * Add all flows. 1497 * 1498 * @param priv 1499 * Pointer to private structure. 1500 * 1501 * @return 1502 * 0 on success, a errno value otherwise and rte_errno is set. 1503 */ 1504 int 1505 priv_flow_start(struct priv *priv) 1506 { 1507 int ret; 1508 struct rte_flow *flow; 1509 1510 ret = priv_flow_create_drop_queue(priv); 1511 if (ret) 1512 return -1; 1513 for (flow = LIST_FIRST(&priv->flows); 1514 flow; 1515 flow = LIST_NEXT(flow, next)) { 1516 struct ibv_qp *qp; 1517 1518 if (flow->drop) 1519 qp = priv->flow_drop_queue->qp; 1520 else 1521 qp = flow->qp; 1522 flow->ibv_flow = ibv_exp_create_flow(qp, flow->ibv_attr); 1523 if (!flow->ibv_flow) { 1524 DEBUG("Flow %p cannot be applied", (void *)flow); 1525 rte_errno = EINVAL; 1526 return rte_errno; 1527 } 1528 DEBUG("Flow %p applied", (void *)flow); 1529 if (flow->mark) { 1530 unsigned int n; 1531 1532 for (n = 0; n < flow->rxqs_n; ++n) 1533 flow->rxqs[n]->mark = 1; 1534 } 1535 } 1536 return 0; 1537 } 1538 1539 /** 1540 * Verify if the Rx queue is used in a flow. 1541 * 1542 * @param priv 1543 * Pointer to private structure. 1544 * @param rxq 1545 * Pointer to the queue to search. 1546 * 1547 * @return 1548 * Nonzero if the queue is used by a flow. 1549 */ 1550 int 1551 priv_flow_rxq_in_use(struct priv *priv, struct rxq *rxq) 1552 { 1553 struct rte_flow *flow; 1554 1555 for (flow = LIST_FIRST(&priv->flows); 1556 flow; 1557 flow = LIST_NEXT(flow, next)) { 1558 unsigned int n; 1559 1560 if (flow->drop) 1561 continue; 1562 for (n = 0; n < flow->rxqs_n; ++n) { 1563 if (flow->rxqs[n] == rxq) 1564 return 1; 1565 } 1566 } 1567 return 0; 1568 } 1569