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 (!rss || !rss->num) { 510 rte_flow_error_set(error, EINVAL, 511 RTE_FLOW_ERROR_TYPE_ACTION, 512 actions, 513 "no valid queues"); 514 return -rte_errno; 515 } 516 if (action->queues_n == 1) { 517 uint16_t found = 0; 518 519 assert(action->queues_n); 520 for (n = 0; n < rss->num; ++n) { 521 if (action->queues[0] == 522 rss->queue[n]) { 523 found = 1; 524 break; 525 } 526 } 527 if (!found) { 528 rte_flow_error_set(error, ENOTSUP, 529 RTE_FLOW_ERROR_TYPE_ACTION, 530 actions, 531 "queue action not in RSS" 532 " queues"); 533 return -rte_errno; 534 } 535 } 536 for (n = 0; n < rss->num; ++n) { 537 if (rss->queue[n] >= priv->rxqs_n) { 538 rte_flow_error_set(error, EINVAL, 539 RTE_FLOW_ERROR_TYPE_ACTION, 540 actions, 541 "queue id > number of" 542 " queues"); 543 return -rte_errno; 544 } 545 } 546 action->queue = 1; 547 for (n = 0; n < rss->num; ++n) 548 action->queues[n] = rss->queue[n]; 549 action->queues_n = rss->num; 550 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) { 551 const struct rte_flow_action_mark *mark = 552 (const struct rte_flow_action_mark *) 553 actions->conf; 554 555 if (!mark) { 556 rte_flow_error_set(error, EINVAL, 557 RTE_FLOW_ERROR_TYPE_ACTION, 558 actions, 559 "mark must be defined"); 560 return -rte_errno; 561 } else if (mark->id >= MLX5_FLOW_MARK_MAX) { 562 rte_flow_error_set(error, ENOTSUP, 563 RTE_FLOW_ERROR_TYPE_ACTION, 564 actions, 565 "mark must be between 0" 566 " and 16777199"); 567 return -rte_errno; 568 } 569 action->mark = 1; 570 action->mark_id = mark->id; 571 } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) { 572 action->mark = 1; 573 } else { 574 goto exit_action_not_supported; 575 } 576 } 577 if (action->mark && !flow->ibv_attr && !action->drop) 578 flow->offset += sizeof(struct ibv_exp_flow_spec_action_tag); 579 if (!action->queue && !action->drop) { 580 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE, 581 NULL, "no valid action"); 582 return -rte_errno; 583 } 584 return 0; 585 exit_item_not_supported: 586 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM, 587 items, "item not supported"); 588 return -rte_errno; 589 exit_action_not_supported: 590 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION, 591 actions, "action not supported"); 592 return -rte_errno; 593 } 594 595 /** 596 * Validate a flow supported by the NIC. 597 * 598 * @see rte_flow_validate() 599 * @see rte_flow_ops 600 */ 601 int 602 mlx5_flow_validate(struct rte_eth_dev *dev, 603 const struct rte_flow_attr *attr, 604 const struct rte_flow_item items[], 605 const struct rte_flow_action actions[], 606 struct rte_flow_error *error) 607 { 608 struct priv *priv = dev->data->dev_private; 609 int ret; 610 struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr) }; 611 struct mlx5_flow_action action = { 612 .queue = 0, 613 .drop = 0, 614 .mark = 0, 615 .mark_id = MLX5_FLOW_MARK_DEFAULT, 616 .queues_n = 0, 617 }; 618 619 priv_lock(priv); 620 ret = priv_flow_validate(priv, attr, items, actions, error, &flow, 621 &action); 622 priv_unlock(priv); 623 return ret; 624 } 625 626 /** 627 * Convert Ethernet item to Verbs specification. 628 * 629 * @param item[in] 630 * Item specification. 631 * @param default_mask[in] 632 * Default bit-masks to use when item->mask is not provided. 633 * @param data[in, out] 634 * User structure. 635 */ 636 static int 637 mlx5_flow_create_eth(const struct rte_flow_item *item, 638 const void *default_mask, 639 void *data) 640 { 641 const struct rte_flow_item_eth *spec = item->spec; 642 const struct rte_flow_item_eth *mask = item->mask; 643 struct mlx5_flow *flow = (struct mlx5_flow *)data; 644 struct ibv_exp_flow_spec_eth *eth; 645 const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth); 646 unsigned int i; 647 648 ++flow->ibv_attr->num_of_specs; 649 flow->ibv_attr->priority = 2; 650 flow->hash_fields = 0; 651 eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 652 *eth = (struct ibv_exp_flow_spec_eth) { 653 .type = flow->inner | IBV_EXP_FLOW_SPEC_ETH, 654 .size = eth_size, 655 }; 656 if (!spec) 657 return 0; 658 if (!mask) 659 mask = default_mask; 660 memcpy(eth->val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN); 661 memcpy(eth->val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN); 662 eth->val.ether_type = spec->type; 663 memcpy(eth->mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN); 664 memcpy(eth->mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN); 665 eth->mask.ether_type = mask->type; 666 /* Remove unwanted bits from values. */ 667 for (i = 0; i < ETHER_ADDR_LEN; ++i) { 668 eth->val.dst_mac[i] &= eth->mask.dst_mac[i]; 669 eth->val.src_mac[i] &= eth->mask.src_mac[i]; 670 } 671 eth->val.ether_type &= eth->mask.ether_type; 672 return 0; 673 } 674 675 /** 676 * Convert VLAN item to Verbs specification. 677 * 678 * @param item[in] 679 * Item specification. 680 * @param default_mask[in] 681 * Default bit-masks to use when item->mask is not provided. 682 * @param data[in, out] 683 * User structure. 684 */ 685 static int 686 mlx5_flow_create_vlan(const struct rte_flow_item *item, 687 const void *default_mask, 688 void *data) 689 { 690 const struct rte_flow_item_vlan *spec = item->spec; 691 const struct rte_flow_item_vlan *mask = item->mask; 692 struct mlx5_flow *flow = (struct mlx5_flow *)data; 693 struct ibv_exp_flow_spec_eth *eth; 694 const unsigned int eth_size = sizeof(struct ibv_exp_flow_spec_eth); 695 696 eth = (void *)((uintptr_t)flow->ibv_attr + flow->offset - eth_size); 697 if (!spec) 698 return 0; 699 if (!mask) 700 mask = default_mask; 701 eth->val.vlan_tag = spec->tci; 702 eth->mask.vlan_tag = mask->tci; 703 eth->val.vlan_tag &= eth->mask.vlan_tag; 704 return 0; 705 } 706 707 /** 708 * Convert IPv4 item to Verbs specification. 709 * 710 * @param item[in] 711 * Item specification. 712 * @param default_mask[in] 713 * Default bit-masks to use when item->mask is not provided. 714 * @param data[in, out] 715 * User structure. 716 */ 717 static int 718 mlx5_flow_create_ipv4(const struct rte_flow_item *item, 719 const void *default_mask, 720 void *data) 721 { 722 const struct rte_flow_item_ipv4 *spec = item->spec; 723 const struct rte_flow_item_ipv4 *mask = item->mask; 724 struct mlx5_flow *flow = (struct mlx5_flow *)data; 725 struct ibv_exp_flow_spec_ipv4_ext *ipv4; 726 unsigned int ipv4_size = sizeof(struct ibv_exp_flow_spec_ipv4_ext); 727 728 ++flow->ibv_attr->num_of_specs; 729 flow->ibv_attr->priority = 1; 730 flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV4 | 731 IBV_EXP_RX_HASH_DST_IPV4); 732 ipv4 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 733 *ipv4 = (struct ibv_exp_flow_spec_ipv4_ext) { 734 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV4_EXT, 735 .size = ipv4_size, 736 }; 737 if (!spec) 738 return 0; 739 if (!mask) 740 mask = default_mask; 741 ipv4->val = (struct ibv_exp_flow_ipv4_ext_filter){ 742 .src_ip = spec->hdr.src_addr, 743 .dst_ip = spec->hdr.dst_addr, 744 .proto = spec->hdr.next_proto_id, 745 .tos = spec->hdr.type_of_service, 746 }; 747 ipv4->mask = (struct ibv_exp_flow_ipv4_ext_filter){ 748 .src_ip = mask->hdr.src_addr, 749 .dst_ip = mask->hdr.dst_addr, 750 .proto = mask->hdr.next_proto_id, 751 .tos = mask->hdr.type_of_service, 752 }; 753 /* Remove unwanted bits from values. */ 754 ipv4->val.src_ip &= ipv4->mask.src_ip; 755 ipv4->val.dst_ip &= ipv4->mask.dst_ip; 756 ipv4->val.proto &= ipv4->mask.proto; 757 ipv4->val.tos &= ipv4->mask.tos; 758 return 0; 759 } 760 761 /** 762 * Convert IPv6 item to Verbs specification. 763 * 764 * @param item[in] 765 * Item specification. 766 * @param default_mask[in] 767 * Default bit-masks to use when item->mask is not provided. 768 * @param data[in, out] 769 * User structure. 770 */ 771 static int 772 mlx5_flow_create_ipv6(const struct rte_flow_item *item, 773 const void *default_mask, 774 void *data) 775 { 776 const struct rte_flow_item_ipv6 *spec = item->spec; 777 const struct rte_flow_item_ipv6 *mask = item->mask; 778 struct mlx5_flow *flow = (struct mlx5_flow *)data; 779 struct ibv_exp_flow_spec_ipv6_ext *ipv6; 780 unsigned int ipv6_size = sizeof(struct ibv_exp_flow_spec_ipv6_ext); 781 unsigned int i; 782 783 ++flow->ibv_attr->num_of_specs; 784 flow->ibv_attr->priority = 1; 785 flow->hash_fields = (IBV_EXP_RX_HASH_SRC_IPV6 | 786 IBV_EXP_RX_HASH_DST_IPV6); 787 ipv6 = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 788 *ipv6 = (struct ibv_exp_flow_spec_ipv6_ext) { 789 .type = flow->inner | IBV_EXP_FLOW_SPEC_IPV6_EXT, 790 .size = ipv6_size, 791 }; 792 if (!spec) 793 return 0; 794 if (!mask) 795 mask = default_mask; 796 memcpy(ipv6->val.src_ip, spec->hdr.src_addr, 797 RTE_DIM(ipv6->val.src_ip)); 798 memcpy(ipv6->val.dst_ip, spec->hdr.dst_addr, 799 RTE_DIM(ipv6->val.dst_ip)); 800 memcpy(ipv6->mask.src_ip, mask->hdr.src_addr, 801 RTE_DIM(ipv6->mask.src_ip)); 802 memcpy(ipv6->mask.dst_ip, mask->hdr.dst_addr, 803 RTE_DIM(ipv6->mask.dst_ip)); 804 ipv6->mask.flow_label = mask->hdr.vtc_flow; 805 ipv6->mask.next_hdr = mask->hdr.proto; 806 ipv6->mask.hop_limit = mask->hdr.hop_limits; 807 /* Remove unwanted bits from values. */ 808 for (i = 0; i < RTE_DIM(ipv6->val.src_ip); ++i) { 809 ipv6->val.src_ip[i] &= ipv6->mask.src_ip[i]; 810 ipv6->val.dst_ip[i] &= ipv6->mask.dst_ip[i]; 811 } 812 ipv6->val.flow_label &= ipv6->mask.flow_label; 813 ipv6->val.next_hdr &= ipv6->mask.next_hdr; 814 ipv6->val.hop_limit &= ipv6->mask.hop_limit; 815 return 0; 816 } 817 818 /** 819 * Convert UDP item to Verbs specification. 820 * 821 * @param item[in] 822 * Item specification. 823 * @param default_mask[in] 824 * Default bit-masks to use when item->mask is not provided. 825 * @param data[in, out] 826 * User structure. 827 */ 828 static int 829 mlx5_flow_create_udp(const struct rte_flow_item *item, 830 const void *default_mask, 831 void *data) 832 { 833 const struct rte_flow_item_udp *spec = item->spec; 834 const struct rte_flow_item_udp *mask = item->mask; 835 struct mlx5_flow *flow = (struct mlx5_flow *)data; 836 struct ibv_exp_flow_spec_tcp_udp *udp; 837 unsigned int udp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp); 838 839 ++flow->ibv_attr->num_of_specs; 840 flow->ibv_attr->priority = 0; 841 flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_UDP | 842 IBV_EXP_RX_HASH_DST_PORT_UDP); 843 udp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 844 *udp = (struct ibv_exp_flow_spec_tcp_udp) { 845 .type = flow->inner | IBV_EXP_FLOW_SPEC_UDP, 846 .size = udp_size, 847 }; 848 if (!spec) 849 return 0; 850 if (!mask) 851 mask = default_mask; 852 udp->val.dst_port = spec->hdr.dst_port; 853 udp->val.src_port = spec->hdr.src_port; 854 udp->mask.dst_port = mask->hdr.dst_port; 855 udp->mask.src_port = mask->hdr.src_port; 856 /* Remove unwanted bits from values. */ 857 udp->val.src_port &= udp->mask.src_port; 858 udp->val.dst_port &= udp->mask.dst_port; 859 return 0; 860 } 861 862 /** 863 * Convert TCP item to Verbs specification. 864 * 865 * @param item[in] 866 * Item specification. 867 * @param default_mask[in] 868 * Default bit-masks to use when item->mask is not provided. 869 * @param data[in, out] 870 * User structure. 871 */ 872 static int 873 mlx5_flow_create_tcp(const struct rte_flow_item *item, 874 const void *default_mask, 875 void *data) 876 { 877 const struct rte_flow_item_tcp *spec = item->spec; 878 const struct rte_flow_item_tcp *mask = item->mask; 879 struct mlx5_flow *flow = (struct mlx5_flow *)data; 880 struct ibv_exp_flow_spec_tcp_udp *tcp; 881 unsigned int tcp_size = sizeof(struct ibv_exp_flow_spec_tcp_udp); 882 883 ++flow->ibv_attr->num_of_specs; 884 flow->ibv_attr->priority = 0; 885 flow->hash_fields |= (IBV_EXP_RX_HASH_SRC_PORT_TCP | 886 IBV_EXP_RX_HASH_DST_PORT_TCP); 887 tcp = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 888 *tcp = (struct ibv_exp_flow_spec_tcp_udp) { 889 .type = flow->inner | IBV_EXP_FLOW_SPEC_TCP, 890 .size = tcp_size, 891 }; 892 if (!spec) 893 return 0; 894 if (!mask) 895 mask = default_mask; 896 tcp->val.dst_port = spec->hdr.dst_port; 897 tcp->val.src_port = spec->hdr.src_port; 898 tcp->mask.dst_port = mask->hdr.dst_port; 899 tcp->mask.src_port = mask->hdr.src_port; 900 /* Remove unwanted bits from values. */ 901 tcp->val.src_port &= tcp->mask.src_port; 902 tcp->val.dst_port &= tcp->mask.dst_port; 903 return 0; 904 } 905 906 /** 907 * Convert VXLAN item to Verbs specification. 908 * 909 * @param item[in] 910 * Item specification. 911 * @param default_mask[in] 912 * Default bit-masks to use when item->mask is not provided. 913 * @param data[in, out] 914 * User structure. 915 */ 916 static int 917 mlx5_flow_create_vxlan(const struct rte_flow_item *item, 918 const void *default_mask, 919 void *data) 920 { 921 const struct rte_flow_item_vxlan *spec = item->spec; 922 const struct rte_flow_item_vxlan *mask = item->mask; 923 struct mlx5_flow *flow = (struct mlx5_flow *)data; 924 struct ibv_exp_flow_spec_tunnel *vxlan; 925 unsigned int size = sizeof(struct ibv_exp_flow_spec_tunnel); 926 union vni { 927 uint32_t vlan_id; 928 uint8_t vni[4]; 929 } id; 930 931 ++flow->ibv_attr->num_of_specs; 932 flow->ibv_attr->priority = 0; 933 id.vni[0] = 0; 934 vxlan = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 935 *vxlan = (struct ibv_exp_flow_spec_tunnel) { 936 .type = flow->inner | IBV_EXP_FLOW_SPEC_VXLAN_TUNNEL, 937 .size = size, 938 }; 939 flow->inner = IBV_EXP_FLOW_SPEC_INNER; 940 if (!spec) 941 return 0; 942 if (!mask) 943 mask = default_mask; 944 memcpy(&id.vni[1], spec->vni, 3); 945 vxlan->val.tunnel_id = id.vlan_id; 946 memcpy(&id.vni[1], mask->vni, 3); 947 vxlan->mask.tunnel_id = id.vlan_id; 948 /* Remove unwanted bits from values. */ 949 vxlan->val.tunnel_id &= vxlan->mask.tunnel_id; 950 return 0; 951 } 952 953 /** 954 * Convert mark/flag action to Verbs specification. 955 * 956 * @param flow 957 * Pointer to MLX5 flow structure. 958 * @param mark_id 959 * Mark identifier. 960 */ 961 static int 962 mlx5_flow_create_flag_mark(struct mlx5_flow *flow, uint32_t mark_id) 963 { 964 struct ibv_exp_flow_spec_action_tag *tag; 965 unsigned int size = sizeof(struct ibv_exp_flow_spec_action_tag); 966 967 tag = (void *)((uintptr_t)flow->ibv_attr + flow->offset); 968 *tag = (struct ibv_exp_flow_spec_action_tag){ 969 .type = IBV_EXP_FLOW_SPEC_ACTION_TAG, 970 .size = size, 971 .tag_id = mlx5_flow_mark_set(mark_id), 972 }; 973 ++flow->ibv_attr->num_of_specs; 974 return 0; 975 } 976 977 /** 978 * Complete flow rule creation with a drop queue. 979 * 980 * @param priv 981 * Pointer to private structure. 982 * @param flow 983 * MLX5 flow attributes (filled by mlx5_flow_validate()). 984 * @param[out] error 985 * Perform verbose error reporting if not NULL. 986 * 987 * @return 988 * A flow if the rule could be created. 989 */ 990 static struct rte_flow * 991 priv_flow_create_action_queue_drop(struct priv *priv, 992 struct mlx5_flow *flow, 993 struct rte_flow_error *error) 994 { 995 struct rte_flow *rte_flow; 996 997 assert(priv->pd); 998 assert(priv->ctx); 999 rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow), 0); 1000 if (!rte_flow) { 1001 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1002 NULL, "cannot allocate flow memory"); 1003 return NULL; 1004 } 1005 rte_flow->drop = 1; 1006 rte_flow->ibv_attr = flow->ibv_attr; 1007 rte_flow->qp = priv->flow_drop_queue->qp; 1008 if (!priv->started) 1009 return rte_flow; 1010 rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp, 1011 rte_flow->ibv_attr); 1012 if (!rte_flow->ibv_flow) { 1013 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1014 NULL, "flow rule creation failure"); 1015 goto error; 1016 } 1017 return rte_flow; 1018 error: 1019 assert(rte_flow); 1020 rte_free(rte_flow); 1021 return NULL; 1022 } 1023 1024 /** 1025 * Complete flow rule creation. 1026 * 1027 * @param priv 1028 * Pointer to private structure. 1029 * @param flow 1030 * MLX5 flow attributes (filled by mlx5_flow_validate()). 1031 * @param action 1032 * Target action structure. 1033 * @param[out] error 1034 * Perform verbose error reporting if not NULL. 1035 * 1036 * @return 1037 * A flow if the rule could be created. 1038 */ 1039 static struct rte_flow * 1040 priv_flow_create_action_queue(struct priv *priv, 1041 struct mlx5_flow *flow, 1042 struct mlx5_flow_action *action, 1043 struct rte_flow_error *error) 1044 { 1045 struct rte_flow *rte_flow; 1046 unsigned int i; 1047 unsigned int j; 1048 const unsigned int wqs_n = 1 << log2above(action->queues_n); 1049 struct ibv_exp_wq *wqs[wqs_n]; 1050 1051 assert(priv->pd); 1052 assert(priv->ctx); 1053 assert(!action->drop); 1054 rte_flow = rte_calloc(__func__, 1, sizeof(*rte_flow) + 1055 sizeof(*rte_flow->rxqs) * action->queues_n, 0); 1056 if (!rte_flow) { 1057 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1058 NULL, "cannot allocate flow memory"); 1059 return NULL; 1060 } 1061 for (i = 0; i < action->queues_n; ++i) { 1062 struct rxq_ctrl *rxq; 1063 1064 rxq = container_of((*priv->rxqs)[action->queues[i]], 1065 struct rxq_ctrl, rxq); 1066 wqs[i] = rxq->wq; 1067 rte_flow->rxqs[i] = &rxq->rxq; 1068 ++rte_flow->rxqs_n; 1069 rxq->rxq.mark |= action->mark; 1070 } 1071 /* finalise indirection table. */ 1072 for (j = 0; i < wqs_n; ++i, ++j) { 1073 wqs[i] = wqs[j]; 1074 if (j == action->queues_n) 1075 j = 0; 1076 } 1077 rte_flow->mark = action->mark; 1078 rte_flow->ibv_attr = flow->ibv_attr; 1079 rte_flow->hash_fields = flow->hash_fields; 1080 rte_flow->ind_table = ibv_exp_create_rwq_ind_table( 1081 priv->ctx, 1082 &(struct ibv_exp_rwq_ind_table_init_attr){ 1083 .pd = priv->pd, 1084 .log_ind_tbl_size = log2above(action->queues_n), 1085 .ind_tbl = wqs, 1086 .comp_mask = 0, 1087 }); 1088 if (!rte_flow->ind_table) { 1089 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1090 NULL, "cannot allocate indirection table"); 1091 goto error; 1092 } 1093 rte_flow->qp = ibv_exp_create_qp( 1094 priv->ctx, 1095 &(struct ibv_exp_qp_init_attr){ 1096 .qp_type = IBV_QPT_RAW_PACKET, 1097 .comp_mask = 1098 IBV_EXP_QP_INIT_ATTR_PD | 1099 IBV_EXP_QP_INIT_ATTR_PORT | 1100 IBV_EXP_QP_INIT_ATTR_RX_HASH, 1101 .pd = priv->pd, 1102 .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){ 1103 .rx_hash_function = 1104 IBV_EXP_RX_HASH_FUNC_TOEPLITZ, 1105 .rx_hash_key_len = rss_hash_default_key_len, 1106 .rx_hash_key = rss_hash_default_key, 1107 .rx_hash_fields_mask = rte_flow->hash_fields, 1108 .rwq_ind_tbl = rte_flow->ind_table, 1109 }, 1110 .port_num = priv->port, 1111 }); 1112 if (!rte_flow->qp) { 1113 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1114 NULL, "cannot allocate QP"); 1115 goto error; 1116 } 1117 if (!priv->started) 1118 return rte_flow; 1119 rte_flow->ibv_flow = ibv_exp_create_flow(rte_flow->qp, 1120 rte_flow->ibv_attr); 1121 if (!rte_flow->ibv_flow) { 1122 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1123 NULL, "flow rule creation failure"); 1124 goto error; 1125 } 1126 return rte_flow; 1127 error: 1128 assert(rte_flow); 1129 if (rte_flow->qp) 1130 ibv_destroy_qp(rte_flow->qp); 1131 if (rte_flow->ind_table) 1132 ibv_exp_destroy_rwq_ind_table(rte_flow->ind_table); 1133 rte_free(rte_flow); 1134 return NULL; 1135 } 1136 1137 /** 1138 * Convert a flow. 1139 * 1140 * @param priv 1141 * Pointer to private structure. 1142 * @param[in] attr 1143 * Flow rule attributes. 1144 * @param[in] pattern 1145 * Pattern specification (list terminated by the END pattern item). 1146 * @param[in] actions 1147 * Associated actions (list terminated by the END action). 1148 * @param[out] error 1149 * Perform verbose error reporting if not NULL. 1150 * 1151 * @return 1152 * A flow on success, NULL otherwise. 1153 */ 1154 static struct rte_flow * 1155 priv_flow_create(struct priv *priv, 1156 const struct rte_flow_attr *attr, 1157 const struct rte_flow_item items[], 1158 const struct rte_flow_action actions[], 1159 struct rte_flow_error *error) 1160 { 1161 struct rte_flow *rte_flow; 1162 struct mlx5_flow flow = { .offset = sizeof(struct ibv_exp_flow_attr), }; 1163 struct mlx5_flow_action action = { 1164 .queue = 0, 1165 .drop = 0, 1166 .mark = 0, 1167 .mark_id = MLX5_FLOW_MARK_DEFAULT, 1168 .queues_n = 0, 1169 }; 1170 int err; 1171 1172 err = priv_flow_validate(priv, attr, items, actions, error, &flow, 1173 &action); 1174 if (err) 1175 goto exit; 1176 flow.ibv_attr = rte_malloc(__func__, flow.offset, 0); 1177 flow.offset = sizeof(struct ibv_exp_flow_attr); 1178 if (!flow.ibv_attr) { 1179 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE, 1180 NULL, "cannot allocate ibv_attr memory"); 1181 goto exit; 1182 } 1183 *flow.ibv_attr = (struct ibv_exp_flow_attr){ 1184 .type = IBV_EXP_FLOW_ATTR_NORMAL, 1185 .size = sizeof(struct ibv_exp_flow_attr), 1186 .priority = attr->priority, 1187 .num_of_specs = 0, 1188 .port = 0, 1189 .flags = 0, 1190 .reserved = 0, 1191 }; 1192 flow.inner = 0; 1193 flow.hash_fields = 0; 1194 claim_zero(priv_flow_validate(priv, attr, items, actions, 1195 error, &flow, &action)); 1196 if (action.mark && !action.drop) { 1197 mlx5_flow_create_flag_mark(&flow, action.mark_id); 1198 flow.offset += sizeof(struct ibv_exp_flow_spec_action_tag); 1199 } 1200 if (action.drop) 1201 rte_flow = 1202 priv_flow_create_action_queue_drop(priv, &flow, error); 1203 else 1204 rte_flow = priv_flow_create_action_queue(priv, &flow, &action, 1205 error); 1206 if (!rte_flow) 1207 goto exit; 1208 return rte_flow; 1209 exit: 1210 rte_free(flow.ibv_attr); 1211 return NULL; 1212 } 1213 1214 /** 1215 * Create a flow. 1216 * 1217 * @see rte_flow_create() 1218 * @see rte_flow_ops 1219 */ 1220 struct rte_flow * 1221 mlx5_flow_create(struct rte_eth_dev *dev, 1222 const struct rte_flow_attr *attr, 1223 const struct rte_flow_item items[], 1224 const struct rte_flow_action actions[], 1225 struct rte_flow_error *error) 1226 { 1227 struct priv *priv = dev->data->dev_private; 1228 struct rte_flow *flow; 1229 1230 priv_lock(priv); 1231 flow = priv_flow_create(priv, attr, items, actions, error); 1232 if (flow) { 1233 LIST_INSERT_HEAD(&priv->flows, flow, next); 1234 DEBUG("Flow created %p", (void *)flow); 1235 } 1236 priv_unlock(priv); 1237 return flow; 1238 } 1239 1240 /** 1241 * Destroy a flow. 1242 * 1243 * @param priv 1244 * Pointer to private structure. 1245 * @param[in] flow 1246 * Flow to destroy. 1247 */ 1248 static void 1249 priv_flow_destroy(struct priv *priv, 1250 struct rte_flow *flow) 1251 { 1252 (void)priv; 1253 LIST_REMOVE(flow, next); 1254 if (flow->ibv_flow) 1255 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow)); 1256 if (flow->drop) 1257 goto free; 1258 if (flow->qp) 1259 claim_zero(ibv_destroy_qp(flow->qp)); 1260 if (flow->ind_table) 1261 claim_zero(ibv_exp_destroy_rwq_ind_table(flow->ind_table)); 1262 if (flow->drop && flow->wq) 1263 claim_zero(ibv_exp_destroy_wq(flow->wq)); 1264 if (flow->drop && flow->cq) 1265 claim_zero(ibv_destroy_cq(flow->cq)); 1266 if (flow->mark) { 1267 struct rte_flow *tmp; 1268 struct rxq *rxq; 1269 uint32_t mark_n = 0; 1270 uint32_t queue_n; 1271 1272 /* 1273 * To remove the mark from the queue, the queue must not be 1274 * present in any other marked flow (RSS or not). 1275 */ 1276 for (queue_n = 0; queue_n < flow->rxqs_n; ++queue_n) { 1277 rxq = flow->rxqs[queue_n]; 1278 for (tmp = LIST_FIRST(&priv->flows); 1279 tmp; 1280 tmp = LIST_NEXT(tmp, next)) { 1281 uint32_t tqueue_n; 1282 1283 if (tmp->drop) 1284 continue; 1285 for (tqueue_n = 0; 1286 tqueue_n < tmp->rxqs_n; 1287 ++tqueue_n) { 1288 struct rxq *trxq; 1289 1290 trxq = tmp->rxqs[tqueue_n]; 1291 if (rxq == trxq) 1292 ++mark_n; 1293 } 1294 } 1295 rxq->mark = !!mark_n; 1296 } 1297 } 1298 free: 1299 rte_free(flow->ibv_attr); 1300 DEBUG("Flow destroyed %p", (void *)flow); 1301 rte_free(flow); 1302 } 1303 1304 /** 1305 * Destroy a flow. 1306 * 1307 * @see rte_flow_destroy() 1308 * @see rte_flow_ops 1309 */ 1310 int 1311 mlx5_flow_destroy(struct rte_eth_dev *dev, 1312 struct rte_flow *flow, 1313 struct rte_flow_error *error) 1314 { 1315 struct priv *priv = dev->data->dev_private; 1316 1317 (void)error; 1318 priv_lock(priv); 1319 priv_flow_destroy(priv, flow); 1320 priv_unlock(priv); 1321 return 0; 1322 } 1323 1324 /** 1325 * Destroy all flows. 1326 * 1327 * @param priv 1328 * Pointer to private structure. 1329 */ 1330 static void 1331 priv_flow_flush(struct priv *priv) 1332 { 1333 while (!LIST_EMPTY(&priv->flows)) { 1334 struct rte_flow *flow; 1335 1336 flow = LIST_FIRST(&priv->flows); 1337 priv_flow_destroy(priv, flow); 1338 } 1339 } 1340 1341 /** 1342 * Destroy all flows. 1343 * 1344 * @see rte_flow_flush() 1345 * @see rte_flow_ops 1346 */ 1347 int 1348 mlx5_flow_flush(struct rte_eth_dev *dev, 1349 struct rte_flow_error *error) 1350 { 1351 struct priv *priv = dev->data->dev_private; 1352 1353 (void)error; 1354 priv_lock(priv); 1355 priv_flow_flush(priv); 1356 priv_unlock(priv); 1357 return 0; 1358 } 1359 1360 /** 1361 * Create drop queue. 1362 * 1363 * @param priv 1364 * Pointer to private structure. 1365 * 1366 * @return 1367 * 0 on success. 1368 */ 1369 static int 1370 priv_flow_create_drop_queue(struct priv *priv) 1371 { 1372 struct rte_flow_drop *fdq = NULL; 1373 unsigned int i; 1374 1375 assert(priv->pd); 1376 assert(priv->ctx); 1377 fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0); 1378 if (!fdq) { 1379 WARN("cannot allocate memory for drop queue"); 1380 goto error; 1381 } 1382 fdq->cq = ibv_exp_create_cq(priv->ctx, 1, NULL, NULL, 0, 1383 &(struct ibv_exp_cq_init_attr){ 1384 .comp_mask = 0, 1385 }); 1386 if (!fdq->cq) { 1387 WARN("cannot allocate CQ for drop queue"); 1388 goto error; 1389 } 1390 for (i = 0; i != MLX5_DROP_WQ_N; ++i) { 1391 fdq->wqs[i] = ibv_exp_create_wq(priv->ctx, 1392 &(struct ibv_exp_wq_init_attr){ 1393 .wq_type = IBV_EXP_WQT_RQ, 1394 .max_recv_wr = 1, 1395 .max_recv_sge = 1, 1396 .pd = priv->pd, 1397 .cq = fdq->cq, 1398 }); 1399 if (!fdq->wqs[i]) { 1400 WARN("cannot allocate WQ for drop queue"); 1401 goto error; 1402 } 1403 } 1404 fdq->ind_table = ibv_exp_create_rwq_ind_table(priv->ctx, 1405 &(struct ibv_exp_rwq_ind_table_init_attr){ 1406 .pd = priv->pd, 1407 .log_ind_tbl_size = 0, 1408 .ind_tbl = fdq->wqs, 1409 .comp_mask = 0, 1410 }); 1411 if (!fdq->ind_table) { 1412 WARN("cannot allocate indirection table for drop queue"); 1413 goto error; 1414 } 1415 fdq->qp = ibv_exp_create_qp(priv->ctx, 1416 &(struct ibv_exp_qp_init_attr){ 1417 .qp_type = IBV_QPT_RAW_PACKET, 1418 .comp_mask = 1419 IBV_EXP_QP_INIT_ATTR_PD | 1420 IBV_EXP_QP_INIT_ATTR_PORT | 1421 IBV_EXP_QP_INIT_ATTR_RX_HASH, 1422 .pd = priv->pd, 1423 .rx_hash_conf = &(struct ibv_exp_rx_hash_conf){ 1424 .rx_hash_function = 1425 IBV_EXP_RX_HASH_FUNC_TOEPLITZ, 1426 .rx_hash_key_len = rss_hash_default_key_len, 1427 .rx_hash_key = rss_hash_default_key, 1428 .rx_hash_fields_mask = 0, 1429 .rwq_ind_tbl = fdq->ind_table, 1430 }, 1431 .port_num = priv->port, 1432 }); 1433 if (!fdq->qp) { 1434 WARN("cannot allocate QP for drop queue"); 1435 goto error; 1436 } 1437 priv->flow_drop_queue = fdq; 1438 return 0; 1439 error: 1440 if (fdq->qp) 1441 claim_zero(ibv_destroy_qp(fdq->qp)); 1442 if (fdq->ind_table) 1443 claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table)); 1444 for (i = 0; i != MLX5_DROP_WQ_N; ++i) { 1445 if (fdq->wqs[i]) 1446 claim_zero(ibv_exp_destroy_wq(fdq->wqs[i])); 1447 } 1448 if (fdq->cq) 1449 claim_zero(ibv_destroy_cq(fdq->cq)); 1450 if (fdq) 1451 rte_free(fdq); 1452 priv->flow_drop_queue = NULL; 1453 return -1; 1454 } 1455 1456 /** 1457 * Delete drop queue. 1458 * 1459 * @param priv 1460 * Pointer to private structure. 1461 */ 1462 static void 1463 priv_flow_delete_drop_queue(struct priv *priv) 1464 { 1465 struct rte_flow_drop *fdq = priv->flow_drop_queue; 1466 unsigned int i; 1467 1468 if (!fdq) 1469 return; 1470 if (fdq->qp) 1471 claim_zero(ibv_destroy_qp(fdq->qp)); 1472 if (fdq->ind_table) 1473 claim_zero(ibv_exp_destroy_rwq_ind_table(fdq->ind_table)); 1474 for (i = 0; i != MLX5_DROP_WQ_N; ++i) { 1475 if (fdq->wqs[i]) 1476 claim_zero(ibv_exp_destroy_wq(fdq->wqs[i])); 1477 } 1478 if (fdq->cq) 1479 claim_zero(ibv_destroy_cq(fdq->cq)); 1480 rte_free(fdq); 1481 priv->flow_drop_queue = NULL; 1482 } 1483 1484 /** 1485 * Remove all flows. 1486 * 1487 * Called by dev_stop() to remove all flows. 1488 * 1489 * @param priv 1490 * Pointer to private structure. 1491 */ 1492 void 1493 priv_flow_stop(struct priv *priv) 1494 { 1495 struct rte_flow *flow; 1496 1497 for (flow = LIST_FIRST(&priv->flows); 1498 flow; 1499 flow = LIST_NEXT(flow, next)) { 1500 claim_zero(ibv_exp_destroy_flow(flow->ibv_flow)); 1501 flow->ibv_flow = NULL; 1502 if (flow->mark) { 1503 unsigned int n; 1504 1505 for (n = 0; n < flow->rxqs_n; ++n) 1506 flow->rxqs[n]->mark = 0; 1507 } 1508 DEBUG("Flow %p removed", (void *)flow); 1509 } 1510 priv_flow_delete_drop_queue(priv); 1511 } 1512 1513 /** 1514 * Add all flows. 1515 * 1516 * @param priv 1517 * Pointer to private structure. 1518 * 1519 * @return 1520 * 0 on success, a errno value otherwise and rte_errno is set. 1521 */ 1522 int 1523 priv_flow_start(struct priv *priv) 1524 { 1525 int ret; 1526 struct rte_flow *flow; 1527 1528 ret = priv_flow_create_drop_queue(priv); 1529 if (ret) 1530 return -1; 1531 for (flow = LIST_FIRST(&priv->flows); 1532 flow; 1533 flow = LIST_NEXT(flow, next)) { 1534 struct ibv_qp *qp; 1535 1536 if (flow->drop) 1537 qp = priv->flow_drop_queue->qp; 1538 else 1539 qp = flow->qp; 1540 flow->ibv_flow = ibv_exp_create_flow(qp, flow->ibv_attr); 1541 if (!flow->ibv_flow) { 1542 DEBUG("Flow %p cannot be applied", (void *)flow); 1543 rte_errno = EINVAL; 1544 return rte_errno; 1545 } 1546 DEBUG("Flow %p applied", (void *)flow); 1547 if (flow->mark) { 1548 unsigned int n; 1549 1550 for (n = 0; n < flow->rxqs_n; ++n) 1551 flow->rxqs[n]->mark = 1; 1552 } 1553 } 1554 return 0; 1555 } 1556 1557 /** 1558 * Verify if the Rx queue is used in a flow. 1559 * 1560 * @param priv 1561 * Pointer to private structure. 1562 * @param rxq 1563 * Pointer to the queue to search. 1564 * 1565 * @return 1566 * Nonzero if the queue is used by a flow. 1567 */ 1568 int 1569 priv_flow_rxq_in_use(struct priv *priv, struct rxq *rxq) 1570 { 1571 struct rte_flow *flow; 1572 1573 for (flow = LIST_FIRST(&priv->flows); 1574 flow; 1575 flow = LIST_NEXT(flow, next)) { 1576 unsigned int n; 1577 1578 if (flow->drop) 1579 continue; 1580 for (n = 0; n < flow->rxqs_n; ++n) { 1581 if (flow->rxqs[n] == rxq) 1582 return 1; 1583 } 1584 } 1585 return 0; 1586 } 1587