drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <sys/queue.h>
   7 #include <stdint.h>
   8 #include <string.h>
   9
  10 /* Verbs header. */
  11 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  12 #ifdef PEDANTIC
  13 #pragma GCC diagnostic ignored "-Wpedantic"
  14 #endif
  15 #include <infiniband/verbs.h>
  16 #ifdef PEDANTIC
  17 #pragma GCC diagnostic error "-Wpedantic"
  18 #endif
  19
  20 #include <rte_common.h>
  21 #include <rte_ether.h>
  22 #include <rte_eth_ctrl.h>
  23 #include <rte_ethdev_driver.h>
  24 #include <rte_flow.h>
  25 #include <rte_flow_driver.h>
  26 #include <rte_malloc.h>
  27 #include <rte_ip.h>
  28
  29 #include "mlx5.h"
  30 #include "mlx5_defs.h"
  31 #include "mlx5_prm.h"
  32 #include "mlx5_glue.h"
  33
  34 /* Define minimal priority for control plane flows. */
  35 #define MLX5_CTRL_FLOW_PRIORITY 4
  36
  37 /* Internet Protocol versions. */
  38 #define MLX5_IPV4 4
  39 #define MLX5_IPV6 6
  40
  41 #ifndef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
  42 struct ibv_flow_spec_counter_action {
  43         int dummy;
  44 };
  45 #endif
  46
  47 /* Dev ops structure defined in mlx5.c */
  48 extern const struct eth_dev_ops mlx5_dev_ops;
  49 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  50
  51 /** Structure give to the conversion functions. */
  52 struct mlx5_flow_data {
  53         struct mlx5_flow_parse *parser; /** Parser context. */
  54         struct rte_flow_error *error; /** Error context. */
  55 };
  56
  57 static int
  58 mlx5_flow_create_eth(const struct rte_flow_item *item,
  59                      const void *default_mask,
  60                      struct mlx5_flow_data *data);
  61
  62 static int
  63 mlx5_flow_create_vlan(const struct rte_flow_item *item,
  64                       const void *default_mask,
  65                       struct mlx5_flow_data *data);
  66
  67 static int
  68 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
  69                       const void *default_mask,
  70                       struct mlx5_flow_data *data);
  71
  72 static int
  73 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
  74                       const void *default_mask,
  75                       struct mlx5_flow_data *data);
  76
  77 static int
  78 mlx5_flow_create_udp(const struct rte_flow_item *item,
  79                      const void *default_mask,
  80                      struct mlx5_flow_data *data);
  81
  82 static int
  83 mlx5_flow_create_tcp(const struct rte_flow_item *item,
  84                      const void *default_mask,
  85                      struct mlx5_flow_data *data);
  86
  87 static int
  88 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
  89                        const void *default_mask,
  90                        struct mlx5_flow_data *data);
  91
  92 struct mlx5_flow_parse;
  93
  94 static void
  95 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
  96                       unsigned int size);
  97
  98 static int
  99 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id);
 100
 101 static int
 102 mlx5_flow_create_count(struct rte_eth_dev *dev, struct mlx5_flow_parse *parser);
 103
 104 /* Hash RX queue types. */
 105 enum hash_rxq_type {
 106         HASH_RXQ_TCPV4,
 107         HASH_RXQ_UDPV4,
 108         HASH_RXQ_IPV4,
 109         HASH_RXQ_TCPV6,
 110         HASH_RXQ_UDPV6,
 111         HASH_RXQ_IPV6,
 112         HASH_RXQ_ETH,
 113 };
 114
 115 /* Initialization data for hash RX queue. */
 116 struct hash_rxq_init {
 117         uint64_t hash_fields; /* Fields that participate in the hash. */
 118         uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */
 119         unsigned int flow_priority; /* Flow priority to use. */
 120         unsigned int ip_version; /* Internet protocol. */
 121 };
 122
 123 /* Initialization data for hash RX queues. */
 124 const struct hash_rxq_init hash_rxq_init[] = {
 125         [HASH_RXQ_TCPV4] = {
 126                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 127                                 IBV_RX_HASH_DST_IPV4 |
 128                                 IBV_RX_HASH_SRC_PORT_TCP |
 129                                 IBV_RX_HASH_DST_PORT_TCP),
 130                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_TCP,
 131                 .flow_priority = 1,
 132                 .ip_version = MLX5_IPV4,
 133         },
 134         [HASH_RXQ_UDPV4] = {
 135                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 136                                 IBV_RX_HASH_DST_IPV4 |
 137                                 IBV_RX_HASH_SRC_PORT_UDP |
 138                                 IBV_RX_HASH_DST_PORT_UDP),
 139                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_UDP,
 140                 .flow_priority = 1,
 141                 .ip_version = MLX5_IPV4,
 142         },
 143         [HASH_RXQ_IPV4] = {
 144                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 145                                 IBV_RX_HASH_DST_IPV4),
 146                 .dpdk_rss_hf = (ETH_RSS_IPV4 |
 147                                 ETH_RSS_FRAG_IPV4),
 148                 .flow_priority = 2,
 149                 .ip_version = MLX5_IPV4,
 150         },
 151         [HASH_RXQ_TCPV6] = {
 152                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 153                                 IBV_RX_HASH_DST_IPV6 |
 154                                 IBV_RX_HASH_SRC_PORT_TCP |
 155                                 IBV_RX_HASH_DST_PORT_TCP),
 156                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_TCP,
 157                 .flow_priority = 1,
 158                 .ip_version = MLX5_IPV6,
 159         },
 160         [HASH_RXQ_UDPV6] = {
 161                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 162                                 IBV_RX_HASH_DST_IPV6 |
 163                                 IBV_RX_HASH_SRC_PORT_UDP |
 164                                 IBV_RX_HASH_DST_PORT_UDP),
 165                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_UDP,
 166                 .flow_priority = 1,
 167                 .ip_version = MLX5_IPV6,
 168         },
 169         [HASH_RXQ_IPV6] = {
 170                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 171                                 IBV_RX_HASH_DST_IPV6),
 172                 .dpdk_rss_hf = (ETH_RSS_IPV6 |
 173                                 ETH_RSS_FRAG_IPV6),
 174                 .flow_priority = 2,
 175                 .ip_version = MLX5_IPV6,
 176         },
 177         [HASH_RXQ_ETH] = {
 178                 .hash_fields = 0,
 179                 .dpdk_rss_hf = 0,
 180                 .flow_priority = 3,
 181         },
 182 };
 183
 184 /* Number of entries in hash_rxq_init[]. */
 185 const unsigned int hash_rxq_init_n = RTE_DIM(hash_rxq_init);
 186
 187 /** Structure for holding counter stats. */
 188 struct mlx5_flow_counter_stats {
 189         uint64_t hits; /**< Number of packets matched by the rule. */
 190         uint64_t bytes; /**< Number of bytes matched by the rule. */
 191 };
 192
 193 /** Structure for Drop queue. */
 194 struct mlx5_hrxq_drop {
 195         struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
 196         struct ibv_qp *qp; /**< Verbs queue pair. */
 197         struct ibv_wq *wq; /**< Verbs work queue. */
 198         struct ibv_cq *cq; /**< Verbs completion queue. */
 199 };
 200
 201 /* Flows structures. */
 202 struct mlx5_flow {
 203         uint64_t hash_fields; /**< Fields that participate in the hash. */
 204         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 205         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 206         struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */
 207 };
 208
 209 /* Drop flows structures. */
 210 struct mlx5_flow_drop {
 211         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 212         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 213 };
 214
 215 struct rte_flow {
 216         TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
 217         uint32_t mark:1; /**< Set if the flow is marked. */
 218         uint32_t drop:1; /**< Drop queue. */
 219         struct rte_flow_action_rss rss_conf; /**< RSS configuration */
 220         uint16_t (*queues)[]; /**< Queues indexes to use. */
 221         uint8_t rss_key[40]; /**< copy of the RSS key. */
 222         struct ibv_counter_set *cs; /**< Holds the counters for the rule. */
 223         struct mlx5_flow_counter_stats counter_stats;/**<The counter stats. */
 224         struct mlx5_flow frxq[RTE_DIM(hash_rxq_init)];
 225         /**< Flow with Rx queue. */
 226 };
 227
 228 /** Static initializer for items. */
 229 #define ITEMS(...) \
 230         (const enum rte_flow_item_type []){ \
 231                 __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
 232         }
 233
 234 /** Structure to generate a simple graph of layers supported by the NIC. */
 235 struct mlx5_flow_items {
 236         /** List of possible actions for these items. */
 237         const enum rte_flow_action_type *const actions;
 238         /** Bit-masks corresponding to the possibilities for the item. */
 239         const void *mask;
 240         /**
 241          * Default bit-masks to use when item->mask is not provided. When
 242          * \default_mask is also NULL, the full supported bit-mask (\mask) is
 243          * used instead.
 244          */
 245         const void *default_mask;
 246         /** Bit-masks size in bytes. */
 247         const unsigned int mask_sz;
 248         /**
 249          * Conversion function from rte_flow to NIC specific flow.
 250          *
 251          * @param item
 252          *   rte_flow item to convert.
 253          * @param default_mask
 254          *   Default bit-masks to use when item->mask is not provided.
 255          * @param data
 256          *   Internal structure to store the conversion.
 257          *
 258          * @return
 259          *   0 on success, a negative errno value otherwise and rte_errno is
 260          *   set.
 261          */
 262         int (*convert)(const struct rte_flow_item *item,
 263                        const void *default_mask,
 264                        struct mlx5_flow_data *data);
 265         /** Size in bytes of the destination structure. */
 266         const unsigned int dst_sz;
 267         /** List of possible following items.  */
 268         const enum rte_flow_item_type *const items;
 269 };
 270
 271 /** Valid action for this PMD. */
 272 static const enum rte_flow_action_type valid_actions[] = {
 273         RTE_FLOW_ACTION_TYPE_DROP,
 274         RTE_FLOW_ACTION_TYPE_QUEUE,
 275         RTE_FLOW_ACTION_TYPE_MARK,
 276         RTE_FLOW_ACTION_TYPE_FLAG,
 277 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 278         RTE_FLOW_ACTION_TYPE_COUNT,
 279 #endif
 280         RTE_FLOW_ACTION_TYPE_END,
 281 };
 282
 283 /** Graph of supported items and associated actions. */
 284 static const struct mlx5_flow_items mlx5_flow_items[] = {
 285         [RTE_FLOW_ITEM_TYPE_END] = {
 286                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 287                                RTE_FLOW_ITEM_TYPE_VXLAN),
 288         },
 289         [RTE_FLOW_ITEM_TYPE_ETH] = {
 290                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN,
 291                                RTE_FLOW_ITEM_TYPE_IPV4,
 292                                RTE_FLOW_ITEM_TYPE_IPV6),
 293                 .actions = valid_actions,
 294                 .mask = &(const struct rte_flow_item_eth){
 295                         .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 296                         .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 297                         .type = -1,
 298                 },
 299                 .default_mask = &rte_flow_item_eth_mask,
 300                 .mask_sz = sizeof(struct rte_flow_item_eth),
 301                 .convert = mlx5_flow_create_eth,
 302                 .dst_sz = sizeof(struct ibv_flow_spec_eth),
 303         },
 304         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 305                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
 306                                RTE_FLOW_ITEM_TYPE_IPV6),
 307                 .actions = valid_actions,
 308                 .mask = &(const struct rte_flow_item_vlan){
 309                         .tci = -1,
 310                         .inner_type = -1,
 311                 },
 312                 .default_mask = &rte_flow_item_vlan_mask,
 313                 .mask_sz = sizeof(struct rte_flow_item_vlan),
 314                 .convert = mlx5_flow_create_vlan,
 315                 .dst_sz = 0,
 316         },
 317         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 318                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 319                                RTE_FLOW_ITEM_TYPE_TCP),
 320                 .actions = valid_actions,
 321                 .mask = &(const struct rte_flow_item_ipv4){
 322                         .hdr = {
 323                                 .src_addr = -1,
 324                                 .dst_addr = -1,
 325                                 .type_of_service = -1,
 326                                 .next_proto_id = -1,
 327                         },
 328                 },
 329                 .default_mask = &rte_flow_item_ipv4_mask,
 330                 .mask_sz = sizeof(struct rte_flow_item_ipv4),
 331                 .convert = mlx5_flow_create_ipv4,
 332                 .dst_sz = sizeof(struct ibv_flow_spec_ipv4_ext),
 333         },
 334         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 335                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 336                                RTE_FLOW_ITEM_TYPE_TCP),
 337                 .actions = valid_actions,
 338                 .mask = &(const struct rte_flow_item_ipv6){
 339                         .hdr = {
 340                                 .src_addr = {
 341                                         0xff, 0xff, 0xff, 0xff,
 342                                         0xff, 0xff, 0xff, 0xff,
 343                                         0xff, 0xff, 0xff, 0xff,
 344                                         0xff, 0xff, 0xff, 0xff,
 345                                 },
 346                                 .dst_addr = {
 347                                         0xff, 0xff, 0xff, 0xff,
 348                                         0xff, 0xff, 0xff, 0xff,
 349                                         0xff, 0xff, 0xff, 0xff,
 350                                         0xff, 0xff, 0xff, 0xff,
 351                                 },
 352                                 .vtc_flow = -1,
 353                                 .proto = -1,
 354                                 .hop_limits = -1,
 355                         },
 356                 },
 357                 .default_mask = &rte_flow_item_ipv6_mask,
 358                 .mask_sz = sizeof(struct rte_flow_item_ipv6),
 359                 .convert = mlx5_flow_create_ipv6,
 360                 .dst_sz = sizeof(struct ibv_flow_spec_ipv6),
 361         },
 362         [RTE_FLOW_ITEM_TYPE_UDP] = {
 363                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN),
 364                 .actions = valid_actions,
 365                 .mask = &(const struct rte_flow_item_udp){
 366                         .hdr = {
 367                                 .src_port = -1,
 368                                 .dst_port = -1,
 369                         },
 370                 },
 371                 .default_mask = &rte_flow_item_udp_mask,
 372                 .mask_sz = sizeof(struct rte_flow_item_udp),
 373                 .convert = mlx5_flow_create_udp,
 374                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 375         },
 376         [RTE_FLOW_ITEM_TYPE_TCP] = {
 377                 .actions = valid_actions,
 378                 .mask = &(const struct rte_flow_item_tcp){
 379                         .hdr = {
 380                                 .src_port = -1,
 381                                 .dst_port = -1,
 382                         },
 383                 },
 384                 .default_mask = &rte_flow_item_tcp_mask,
 385                 .mask_sz = sizeof(struct rte_flow_item_tcp),
 386                 .convert = mlx5_flow_create_tcp,
 387                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 388         },
 389         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 390                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
 391                 .actions = valid_actions,
 392                 .mask = &(const struct rte_flow_item_vxlan){
 393                         .vni = "\xff\xff\xff",
 394                 },
 395                 .default_mask = &rte_flow_item_vxlan_mask,
 396                 .mask_sz = sizeof(struct rte_flow_item_vxlan),
 397                 .convert = mlx5_flow_create_vxlan,
 398                 .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
 399         },
 400 };
 401
 402 /** Structure to pass to the conversion function. */
 403 struct mlx5_flow_parse {
 404         uint32_t inner; /**< Set once VXLAN is encountered. */
 405         uint32_t create:1;
 406         /**< Whether resources should remain after a validate. */
 407         uint32_t drop:1; /**< Target is a drop queue. */
 408         uint32_t mark:1; /**< Mark is present in the flow. */
 409         uint32_t count:1; /**< Count is present in the flow. */
 410         uint32_t mark_id; /**< Mark identifier. */
 411         struct rte_flow_action_rss rss_conf; /**< RSS configuration */
 412         uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */
 413         uint8_t rss_key[40]; /**< copy of the RSS key. */
 414         enum hash_rxq_type layer; /**< Last pattern layer detected. */
 415         struct ibv_counter_set *cs; /**< Holds the counter set for the rule */
 416         struct {
 417                 struct ibv_flow_attr *ibv_attr;
 418                 /**< Pointer to Verbs attributes. */
 419                 unsigned int offset;
 420                 /**< Current position or total size of the attribute. */
 421         } queue[RTE_DIM(hash_rxq_init)];
 422 };
 423
 424 static const struct rte_flow_ops mlx5_flow_ops = {
 425         .validate = mlx5_flow_validate,
 426         .create = mlx5_flow_create,
 427         .destroy = mlx5_flow_destroy,
 428         .flush = mlx5_flow_flush,
 429 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 430         .query = mlx5_flow_query,
 431 #else
 432         .query = NULL,
 433 #endif
 434         .isolate = mlx5_flow_isolate,
 435 };
 436
 437 /* Convert FDIR request to Generic flow. */
 438 struct mlx5_fdir {
 439         struct rte_flow_attr attr;
 440         struct rte_flow_action actions[2];
 441         struct rte_flow_item items[4];
 442         struct rte_flow_item_eth l2;
 443         struct rte_flow_item_eth l2_mask;
 444         union {
 445                 struct rte_flow_item_ipv4 ipv4;
 446                 struct rte_flow_item_ipv6 ipv6;
 447         } l3;
 448         union {
 449                 struct rte_flow_item_ipv4 ipv4;
 450                 struct rte_flow_item_ipv6 ipv6;
 451         } l3_mask;
 452         union {
 453                 struct rte_flow_item_udp udp;
 454                 struct rte_flow_item_tcp tcp;
 455         } l4;
 456         union {
 457                 struct rte_flow_item_udp udp;
 458                 struct rte_flow_item_tcp tcp;
 459         } l4_mask;
 460         struct rte_flow_action_queue queue;
 461 };
 462
 463 /* Verbs specification header. */
 464 struct ibv_spec_header {
 465         enum ibv_flow_spec_type type;
 466         uint16_t size;
 467 };
 468
 469 /**
 470  * Check support for a given item.
 471  *
 472  * @param item[in]
 473  *   Item specification.
 474  * @param mask[in]
 475  *   Bit-masks covering supported fields to compare with spec, last and mask in
 476  *   \item.
 477  * @param size
 478  *   Bit-Mask size in bytes.
 479  *
 480  * @return
 481  *   0 on success, a negative errno value otherwise and rte_errno is set.
 482  */
 483 static int
 484 mlx5_flow_item_validate(const struct rte_flow_item *item,
 485                         const uint8_t *mask, unsigned int size)
 486 {
 487         if (!item->spec && (item->mask || item->last)) {
 488                 rte_errno = EINVAL;
 489                 return -rte_errno;
 490         }
 491         if (item->spec && !item->mask) {
 492                 unsigned int i;
 493                 const uint8_t *spec = item->spec;
 494
 495                 for (i = 0; i < size; ++i)
 496                         if ((spec[i] | mask[i]) != mask[i]) {
 497                                 rte_errno = EINVAL;
 498                                 return -rte_errno;
 499                         }
 500         }
 501         if (item->last && !item->mask) {
 502                 unsigned int i;
 503                 const uint8_t *spec = item->last;
 504
 505                 for (i = 0; i < size; ++i)
 506                         if ((spec[i] | mask[i]) != mask[i]) {
 507                                 rte_errno = EINVAL;
 508                                 return -rte_errno;
 509                         }
 510         }
 511         if (item->mask) {
 512                 unsigned int i;
 513                 const uint8_t *spec = item->spec;
 514
 515                 for (i = 0; i < size; ++i)
 516                         if ((spec[i] | mask[i]) != mask[i]) {
 517                                 rte_errno = EINVAL;
 518                                 return -rte_errno;
 519                         }
 520         }
 521         if (item->spec && item->last) {
 522                 uint8_t spec[size];
 523                 uint8_t last[size];
 524                 const uint8_t *apply = mask;
 525                 unsigned int i;
 526                 int ret;
 527
 528                 if (item->mask)
 529                         apply = item->mask;
 530                 for (i = 0; i < size; ++i) {
 531                         spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
 532                         last[i] = ((const uint8_t *)item->last)[i] & apply[i];
 533                 }
 534                 ret = memcmp(spec, last, size);
 535                 if (ret != 0) {
 536                         rte_errno = EINVAL;
 537                         return -rte_errno;
 538                 }
 539         }
 540         return 0;
 541 }
 542
 543 /**
 544  * Extract attribute to the parser.
 545  *
 546  * @param[in] attr
 547  *   Flow rule attributes.
 548  * @param[out] error
 549  *   Perform verbose error reporting if not NULL.
 550  *
 551  * @return
 552  *   0 on success, a negative errno value otherwise and rte_errno is set.
 553  */
 554 static int
 555 mlx5_flow_convert_attributes(const struct rte_flow_attr *attr,
 556                              struct rte_flow_error *error)
 557 {
 558         if (attr->group) {
 559                 rte_flow_error_set(error, ENOTSUP,
 560                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 561                                    NULL,
 562                                    "groups are not supported");
 563                 return -rte_errno;
 564         }
 565         if (attr->priority && attr->priority != MLX5_CTRL_FLOW_PRIORITY) {
 566                 rte_flow_error_set(error, ENOTSUP,
 567                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 568                                    NULL,
 569                                    "priorities are not supported");
 570                 return -rte_errno;
 571         }
 572         if (attr->egress) {
 573                 rte_flow_error_set(error, ENOTSUP,
 574                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 575                                    NULL,
 576                                    "egress is not supported");
 577                 return -rte_errno;
 578         }
 579         if (!attr->ingress) {
 580                 rte_flow_error_set(error, ENOTSUP,
 581                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 582                                    NULL,
 583                                    "only ingress is supported");
 584                 return -rte_errno;
 585         }
 586         return 0;
 587 }
 588
 589 /**
 590  * Extract actions request to the parser.
 591  *
 592  * @param dev
 593  *   Pointer to Ethernet device.
 594  * @param[in] actions
 595  *   Associated actions (list terminated by the END action).
 596  * @param[out] error
 597  *   Perform verbose error reporting if not NULL.
 598  * @param[in, out] parser
 599  *   Internal parser structure.
 600  *
 601  * @return
 602  *   0 on success, a negative errno value otherwise and rte_errno is set.
 603  */
 604 static int
 605 mlx5_flow_convert_actions(struct rte_eth_dev *dev,
 606                           const struct rte_flow_action actions[],
 607                           struct rte_flow_error *error,
 608                           struct mlx5_flow_parse *parser)
 609 {
 610         enum { FATE = 1, MARK = 2, COUNT = 4, };
 611         uint32_t overlap = 0;
 612         struct priv *priv = dev->data->dev_private;
 613
 614         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
 615                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
 616                         continue;
 617                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
 618                         if (overlap & FATE)
 619                                 goto exit_action_overlap;
 620                         overlap |= FATE;
 621                         parser->drop = 1;
 622                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
 623                         const struct rte_flow_action_queue *queue =
 624                                 (const struct rte_flow_action_queue *)
 625                                 actions->conf;
 626
 627                         if (overlap & FATE)
 628                                 goto exit_action_overlap;
 629                         overlap |= FATE;
 630                         if (!queue || (queue->index > (priv->rxqs_n - 1)))
 631                                 goto exit_action_not_supported;
 632                         parser->queues[0] = queue->index;
 633                         parser->rss_conf = (struct rte_flow_action_rss){
 634                                 .queue_num = 1,
 635                                 .queue = parser->queues,
 636                         };
 637                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) {
 638                         const struct rte_flow_action_rss *rss =
 639                                 (const struct rte_flow_action_rss *)
 640                                 actions->conf;
 641                         const uint8_t *rss_key;
 642                         uint32_t rss_key_len;
 643                         uint16_t n;
 644
 645                         if (overlap & FATE)
 646                                 goto exit_action_overlap;
 647                         overlap |= FATE;
 648                         if (rss->func &&
 649                             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ) {
 650                                 rte_flow_error_set(error, EINVAL,
 651                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 652                                                    actions,
 653                                                    "the only supported RSS hash"
 654                                                    " function is Toeplitz");
 655                                 return -rte_errno;
 656                         }
 657                         if (rss->level) {
 658                                 rte_flow_error_set(error, EINVAL,
 659                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 660                                                    actions,
 661                                                    "a nonzero RSS encapsulation"
 662                                                    " level is not supported");
 663                                 return -rte_errno;
 664                         }
 665                         if (rss->types & MLX5_RSS_HF_MASK) {
 666                                 rte_flow_error_set(error, EINVAL,
 667                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 668                                                    actions,
 669                                                    "unsupported RSS type"
 670                                                    " requested");
 671                                 return -rte_errno;
 672                         }
 673                         if (rss->key_len) {
 674                                 rss_key_len = rss->key_len;
 675                                 rss_key = rss->key;
 676                         } else {
 677                                 rss_key_len = rss_hash_default_key_len;
 678                                 rss_key = rss_hash_default_key;
 679                         }
 680                         if (rss_key_len != RTE_DIM(parser->rss_key)) {
 681                                 rte_flow_error_set(error, EINVAL,
 682                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 683                                                    actions,
 684                                                    "RSS hash key must be"
 685                                                    " exactly 40 bytes long");
 686                                 return -rte_errno;
 687                         }
 688                         if (!rss->queue_num) {
 689                                 rte_flow_error_set(error, EINVAL,
 690                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 691                                                    actions,
 692                                                    "no valid queues");
 693                                 return -rte_errno;
 694                         }
 695                         if (rss->queue_num > RTE_DIM(parser->queues)) {
 696                                 rte_flow_error_set(error, EINVAL,
 697                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 698                                                    actions,
 699                                                    "too many queues for RSS"
 700                                                    " context");
 701                                 return -rte_errno;
 702                         }
 703                         for (n = 0; n < rss->queue_num; ++n) {
 704                                 if (rss->queue[n] >= priv->rxqs_n) {
 705                                         rte_flow_error_set(error, EINVAL,
 706                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 707                                                    actions,
 708                                                    "queue id > number of"
 709                                                    " queues");
 710                                         return -rte_errno;
 711                                 }
 712                         }
 713                         parser->rss_conf = (struct rte_flow_action_rss){
 714                                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
 715                                 .level = 0,
 716                                 .types = rss->types,
 717                                 .key_len = rss_key_len,
 718                                 .queue_num = rss->queue_num,
 719                                 .key = memcpy(parser->rss_key, rss_key,
 720                                               sizeof(*rss_key) * rss_key_len),
 721                                 .queue = memcpy(parser->queues, rss->queue,
 722                                                 sizeof(*rss->queue) *
 723                                                 rss->queue_num),
 724                         };
 725                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
 726                         const struct rte_flow_action_mark *mark =
 727                                 (const struct rte_flow_action_mark *)
 728                                 actions->conf;
 729
 730                         if (overlap & MARK)
 731                                 goto exit_action_overlap;
 732                         overlap |= MARK;
 733                         if (!mark) {
 734                                 rte_flow_error_set(error, EINVAL,
 735                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 736                                                    actions,
 737                                                    "mark must be defined");
 738                                 return -rte_errno;
 739                         } else if (mark->id >= MLX5_FLOW_MARK_MAX) {
 740                                 rte_flow_error_set(error, ENOTSUP,
 741                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 742                                                    actions,
 743                                                    "mark must be between 0"
 744                                                    " and 16777199");
 745                                 return -rte_errno;
 746                         }
 747                         parser->mark = 1;
 748                         parser->mark_id = mark->id;
 749                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) {
 750                         if (overlap & MARK)
 751                                 goto exit_action_overlap;
 752                         overlap |= MARK;
 753                         parser->mark = 1;
 754                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT &&
 755                            priv->config.flow_counter_en) {
 756                         if (overlap & COUNT)
 757                                 goto exit_action_overlap;
 758                         overlap |= COUNT;
 759                         parser->count = 1;
 760                 } else {
 761                         goto exit_action_not_supported;
 762                 }
 763         }
 764         /* When fate is unknown, drop traffic. */
 765         if (!(overlap & FATE))
 766                 parser->drop = 1;
 767         if (parser->drop && parser->mark)
 768                 parser->mark = 0;
 769         if (!parser->rss_conf.queue_num && !parser->drop) {
 770                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
 771                                    NULL, "no valid action");
 772                 return -rte_errno;
 773         }
 774         return 0;
 775 exit_action_not_supported:
 776         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 777                            actions, "action not supported");
 778         return -rte_errno;
 779 exit_action_overlap:
 780         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 781                            actions, "overlapping actions are not supported");
 782         return -rte_errno;
 783 }
 784
 785 /**
 786  * Validate items.
 787  *
 788  * @param[in] items
 789  *   Pattern specification (list terminated by the END pattern item).
 790  * @param[out] error
 791  *   Perform verbose error reporting if not NULL.
 792  * @param[in, out] parser
 793  *   Internal parser structure.
 794  *
 795  * @return
 796  *   0 on success, a negative errno value otherwise and rte_errno is set.
 797  */
 798 static int
 799 mlx5_flow_convert_items_validate(const struct rte_flow_item items[],
 800                                  struct rte_flow_error *error,
 801                                  struct mlx5_flow_parse *parser)
 802 {
 803         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 804         unsigned int i;
 805         int ret = 0;
 806
 807         /* Initialise the offsets to start after verbs attribute. */
 808         for (i = 0; i != hash_rxq_init_n; ++i)
 809                 parser->queue[i].offset = sizeof(struct ibv_flow_attr);
 810         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
 811                 const struct mlx5_flow_items *token = NULL;
 812                 unsigned int n;
 813
 814                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
 815                         continue;
 816                 for (i = 0;
 817                      cur_item->items &&
 818                      cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
 819                      ++i) {
 820                         if (cur_item->items[i] == items->type) {
 821                                 token = &mlx5_flow_items[items->type];
 822                                 break;
 823                         }
 824                 }
 825                 if (!token) {
 826                         ret = -ENOTSUP;
 827                         goto exit_item_not_supported;
 828                 }
 829                 cur_item = token;
 830                 ret = mlx5_flow_item_validate(items,
 831                                               (const uint8_t *)cur_item->mask,
 832                                               cur_item->mask_sz);
 833                 if (ret)
 834                         goto exit_item_not_supported;
 835                 if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
 836                         if (parser->inner) {
 837                                 rte_flow_error_set(error, ENOTSUP,
 838                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 839                                                    items,
 840                                                    "cannot recognize multiple"
 841                                                    " VXLAN encapsulations");
 842                                 return -rte_errno;
 843                         }
 844                         parser->inner = IBV_FLOW_SPEC_INNER;
 845                 }
 846                 if (parser->drop) {
 847                         parser->queue[HASH_RXQ_ETH].offset += cur_item->dst_sz;
 848                 } else {
 849                         for (n = 0; n != hash_rxq_init_n; ++n)
 850                                 parser->queue[n].offset += cur_item->dst_sz;
 851                 }
 852         }
 853         if (parser->drop) {
 854                 parser->queue[HASH_RXQ_ETH].offset +=
 855                         sizeof(struct ibv_flow_spec_action_drop);
 856         }
 857         if (parser->mark) {
 858                 for (i = 0; i != hash_rxq_init_n; ++i)
 859                         parser->queue[i].offset +=
 860                                 sizeof(struct ibv_flow_spec_action_tag);
 861         }
 862         if (parser->count) {
 863                 unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
 864
 865                 for (i = 0; i != hash_rxq_init_n; ++i)
 866                         parser->queue[i].offset += size;
 867         }
 868         return 0;
 869 exit_item_not_supported:
 870         return rte_flow_error_set(error, -ret, RTE_FLOW_ERROR_TYPE_ITEM,
 871                                   items, "item not supported");
 872 }
 873
 874 /**
 875  * Allocate memory space to store verbs flow attributes.
 876  *
 877  * @param[in] size
 878  *   Amount of byte to allocate.
 879  * @param[out] error
 880  *   Perform verbose error reporting if not NULL.
 881  *
 882  * @return
 883  *   A verbs flow attribute on success, NULL otherwise and rte_errno is set.
 884  */
 885 static struct ibv_flow_attr *
 886 mlx5_flow_convert_allocate(unsigned int size, struct rte_flow_error *error)
 887 {
 888         struct ibv_flow_attr *ibv_attr;
 889
 890         ibv_attr = rte_calloc(__func__, 1, size, 0);
 891         if (!ibv_attr) {
 892                 rte_flow_error_set(error, ENOMEM,
 893                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 894                                    NULL,
 895                                    "cannot allocate verbs spec attributes");
 896                 return NULL;
 897         }
 898         return ibv_attr;
 899 }
 900
 901 /**
 902  * Make inner packet matching with an higher priority from the non Inner
 903  * matching.
 904  *
 905  * @param[in, out] parser
 906  *   Internal parser structure.
 907  * @param attr
 908  *   User flow attribute.
 909  */
 910 static void
 911 mlx5_flow_update_priority(struct mlx5_flow_parse *parser,
 912                           const struct rte_flow_attr *attr)
 913 {
 914         unsigned int i;
 915
 916         if (parser->drop) {
 917                 parser->queue[HASH_RXQ_ETH].ibv_attr->priority =
 918                         attr->priority +
 919                         hash_rxq_init[HASH_RXQ_ETH].flow_priority;
 920                 return;
 921         }
 922         for (i = 0; i != hash_rxq_init_n; ++i) {
 923                 if (parser->queue[i].ibv_attr) {
 924                         parser->queue[i].ibv_attr->priority =
 925                                 attr->priority +
 926                                 hash_rxq_init[i].flow_priority -
 927                                 (parser->inner ? 1 : 0);
 928                 }
 929         }
 930 }
 931
 932 /**
 933  * Finalise verbs flow attributes.
 934  *
 935  * @param[in, out] parser
 936  *   Internal parser structure.
 937  */
 938 static void
 939 mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
 940 {
 941         const unsigned int ipv4 =
 942                 hash_rxq_init[parser->layer].ip_version == MLX5_IPV4;
 943         const enum hash_rxq_type hmin = ipv4 ? HASH_RXQ_TCPV4 : HASH_RXQ_TCPV6;
 944         const enum hash_rxq_type hmax = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 945         const enum hash_rxq_type ohmin = ipv4 ? HASH_RXQ_TCPV6 : HASH_RXQ_TCPV4;
 946         const enum hash_rxq_type ohmax = ipv4 ? HASH_RXQ_IPV6 : HASH_RXQ_IPV4;
 947         const enum hash_rxq_type ip = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 948         unsigned int i;
 949
 950         /* Remove any other flow not matching the pattern. */
 951         if (parser->rss_conf.queue_num == 1 && !parser->rss_conf.types) {
 952                 for (i = 0; i != hash_rxq_init_n; ++i) {
 953                         if (i == HASH_RXQ_ETH)
 954                                 continue;
 955                         rte_free(parser->queue[i].ibv_attr);
 956                         parser->queue[i].ibv_attr = NULL;
 957                 }
 958                 return;
 959         }
 960         if (parser->layer == HASH_RXQ_ETH) {
 961                 goto fill;
 962         } else {
 963                 /*
 964                  * This layer becomes useless as the pattern define under
 965                  * layers.
 966                  */
 967                 rte_free(parser->queue[HASH_RXQ_ETH].ibv_attr);
 968                 parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
 969         }
 970         /* Remove opposite kind of layer e.g. IPv6 if the pattern is IPv4. */
 971         for (i = ohmin; i != (ohmax + 1); ++i) {
 972                 if (!parser->queue[i].ibv_attr)
 973                         continue;
 974                 rte_free(parser->queue[i].ibv_attr);
 975                 parser->queue[i].ibv_attr = NULL;
 976         }
 977         /* Remove impossible flow according to the RSS configuration. */
 978         if (hash_rxq_init[parser->layer].dpdk_rss_hf &
 979             parser->rss_conf.types) {
 980                 /* Remove any other flow. */
 981                 for (i = hmin; i != (hmax + 1); ++i) {
 982                         if ((i == parser->layer) ||
 983                              (!parser->queue[i].ibv_attr))
 984                                 continue;
 985                         rte_free(parser->queue[i].ibv_attr);
 986                         parser->queue[i].ibv_attr = NULL;
 987                 }
 988         } else  if (!parser->queue[ip].ibv_attr) {
 989                 /* no RSS possible with the current configuration. */
 990                 parser->rss_conf.queue_num = 1;
 991                 return;
 992         }
 993 fill:
 994         /*
 995          * Fill missing layers in verbs specifications, or compute the correct
 996          * offset to allocate the memory space for the attributes and
 997          * specifications.
 998          */
 999         for (i = 0; i != hash_rxq_init_n - 1; ++i) {
1000                 union {
1001                         struct ibv_flow_spec_ipv4_ext ipv4;
1002                         struct ibv_flow_spec_ipv6 ipv6;
1003                         struct ibv_flow_spec_tcp_udp udp_tcp;
1004                 } specs;
1005                 void *dst;
1006                 uint16_t size;
1007
1008                 if (i == parser->layer)
1009                         continue;
1010                 if (parser->layer == HASH_RXQ_ETH) {
1011                         if (hash_rxq_init[i].ip_version == MLX5_IPV4) {
1012                                 size = sizeof(struct ibv_flow_spec_ipv4_ext);
1013                                 specs.ipv4 = (struct ibv_flow_spec_ipv4_ext){
1014                                         .type = IBV_FLOW_SPEC_IPV4_EXT,
1015                                         .size = size,
1016                                 };
1017                         } else {
1018                                 size = sizeof(struct ibv_flow_spec_ipv6);
1019                                 specs.ipv6 = (struct ibv_flow_spec_ipv6){
1020                                         .type = IBV_FLOW_SPEC_IPV6,
1021                                         .size = size,
1022                                 };
1023                         }
1024                         if (parser->queue[i].ibv_attr) {
1025                                 dst = (void *)((uintptr_t)
1026                                                parser->queue[i].ibv_attr +
1027                                                parser->queue[i].offset);
1028                                 memcpy(dst, &specs, size);
1029                                 ++parser->queue[i].ibv_attr->num_of_specs;
1030                         }
1031                         parser->queue[i].offset += size;
1032                 }
1033                 if ((i == HASH_RXQ_UDPV4) || (i == HASH_RXQ_TCPV4) ||
1034                     (i == HASH_RXQ_UDPV6) || (i == HASH_RXQ_TCPV6)) {
1035                         size = sizeof(struct ibv_flow_spec_tcp_udp);
1036                         specs.udp_tcp = (struct ibv_flow_spec_tcp_udp) {
1037                                 .type = ((i == HASH_RXQ_UDPV4 ||
1038                                           i == HASH_RXQ_UDPV6) ?
1039                                          IBV_FLOW_SPEC_UDP :
1040                                          IBV_FLOW_SPEC_TCP),
1041                                 .size = size,
1042                         };
1043                         if (parser->queue[i].ibv_attr) {
1044                                 dst = (void *)((uintptr_t)
1045                                                parser->queue[i].ibv_attr +
1046                                                parser->queue[i].offset);
1047                                 memcpy(dst, &specs, size);
1048                                 ++parser->queue[i].ibv_attr->num_of_specs;
1049                         }
1050                         parser->queue[i].offset += size;
1051                 }
1052         }
1053 }
1054
1055 /**
1056  * Validate and convert a flow supported by the NIC.
1057  *
1058  * @param dev
1059  *   Pointer to Ethernet device.
1060  * @param[in] attr
1061  *   Flow rule attributes.
1062  * @param[in] pattern
1063  *   Pattern specification (list terminated by the END pattern item).
1064  * @param[in] actions
1065  *   Associated actions (list terminated by the END action).
1066  * @param[out] error
1067  *   Perform verbose error reporting if not NULL.
1068  * @param[in, out] parser
1069  *   Internal parser structure.
1070  *
1071  * @return
1072  *   0 on success, a negative errno value otherwise and rte_errno is set.
1073  */
1074 static int
1075 mlx5_flow_convert(struct rte_eth_dev *dev,
1076                   const struct rte_flow_attr *attr,
1077                   const struct rte_flow_item items[],
1078                   const struct rte_flow_action actions[],
1079                   struct rte_flow_error *error,
1080                   struct mlx5_flow_parse *parser)
1081 {
1082         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
1083         unsigned int i;
1084         int ret;
1085
1086         /* First step. Validate the attributes, items and actions. */
1087         *parser = (struct mlx5_flow_parse){
1088                 .create = parser->create,
1089                 .layer = HASH_RXQ_ETH,
1090                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1091         };
1092         ret = mlx5_flow_convert_attributes(attr, error);
1093         if (ret)
1094                 return ret;
1095         ret = mlx5_flow_convert_actions(dev, actions, error, parser);
1096         if (ret)
1097                 return ret;
1098         ret = mlx5_flow_convert_items_validate(items, error, parser);
1099         if (ret)
1100                 return ret;
1101         mlx5_flow_convert_finalise(parser);
1102         /*
1103          * Second step.
1104          * Allocate the memory space to store verbs specifications.
1105          */
1106         if (parser->drop) {
1107                 unsigned int offset = parser->queue[HASH_RXQ_ETH].offset;
1108
1109                 parser->queue[HASH_RXQ_ETH].ibv_attr =
1110                         mlx5_flow_convert_allocate(offset, error);
1111                 if (!parser->queue[HASH_RXQ_ETH].ibv_attr)
1112                         goto exit_enomem;
1113                 parser->queue[HASH_RXQ_ETH].offset =
1114                         sizeof(struct ibv_flow_attr);
1115         } else {
1116                 for (i = 0; i != hash_rxq_init_n; ++i) {
1117                         unsigned int offset;
1118
1119                         if (!(parser->rss_conf.types &
1120                               hash_rxq_init[i].dpdk_rss_hf) &&
1121                             (i != HASH_RXQ_ETH))
1122                                 continue;
1123                         offset = parser->queue[i].offset;
1124                         parser->queue[i].ibv_attr =
1125                                 mlx5_flow_convert_allocate(offset, error);
1126                         if (!parser->queue[i].ibv_attr)
1127                                 goto exit_enomem;
1128                         parser->queue[i].offset = sizeof(struct ibv_flow_attr);
1129                 }
1130         }
1131         /* Third step. Conversion parse, fill the specifications. */
1132         parser->inner = 0;
1133         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
1134                 struct mlx5_flow_data data = {
1135                         .parser = parser,
1136                         .error = error,
1137                 };
1138
1139                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
1140                         continue;
1141                 cur_item = &mlx5_flow_items[items->type];
1142                 ret = cur_item->convert(items,
1143                                         (cur_item->default_mask ?
1144                                          cur_item->default_mask :
1145                                          cur_item->mask),
1146                                          &data);
1147                 if (ret)
1148                         goto exit_free;
1149         }
1150         if (parser->mark)
1151                 mlx5_flow_create_flag_mark(parser, parser->mark_id);
1152         if (parser->count && parser->create) {
1153                 mlx5_flow_create_count(dev, parser);
1154                 if (!parser->cs)
1155                         goto exit_count_error;
1156         }
1157         /*
1158          * Last step. Complete missing specification to reach the RSS
1159          * configuration.
1160          */
1161         if (!parser->drop)
1162                 mlx5_flow_convert_finalise(parser);
1163         mlx5_flow_update_priority(parser, attr);
1164 exit_free:
1165         /* Only verification is expected, all resources should be released. */
1166         if (!parser->create) {
1167                 for (i = 0; i != hash_rxq_init_n; ++i) {
1168                         if (parser->queue[i].ibv_attr) {
1169                                 rte_free(parser->queue[i].ibv_attr);
1170                                 parser->queue[i].ibv_attr = NULL;
1171                         }
1172                 }
1173         }
1174         return ret;
1175 exit_enomem:
1176         for (i = 0; i != hash_rxq_init_n; ++i) {
1177                 if (parser->queue[i].ibv_attr) {
1178                         rte_free(parser->queue[i].ibv_attr);
1179                         parser->queue[i].ibv_attr = NULL;
1180                 }
1181         }
1182         rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1183                            NULL, "cannot allocate verbs spec attributes");
1184         return -rte_errno;
1185 exit_count_error:
1186         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1187                            NULL, "cannot create counter");
1188         return -rte_errno;
1189 }
1190
1191 /**
1192  * Copy the specification created into the flow.
1193  *
1194  * @param parser
1195  *   Internal parser structure.
1196  * @param src
1197  *   Create specification.
1198  * @param size
1199  *   Size in bytes of the specification to copy.
1200  */
1201 static void
1202 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
1203                       unsigned int size)
1204 {
1205         unsigned int i;
1206         void *dst;
1207
1208         for (i = 0; i != hash_rxq_init_n; ++i) {
1209                 if (!parser->queue[i].ibv_attr)
1210                         continue;
1211                 /* Specification must be the same l3 type or none. */
1212                 if (parser->layer == HASH_RXQ_ETH ||
1213                     (hash_rxq_init[parser->layer].ip_version ==
1214                      hash_rxq_init[i].ip_version) ||
1215                     (hash_rxq_init[i].ip_version == 0)) {
1216                         dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1217                                         parser->queue[i].offset);
1218                         memcpy(dst, src, size);
1219                         ++parser->queue[i].ibv_attr->num_of_specs;
1220                         parser->queue[i].offset += size;
1221                 }
1222         }
1223 }
1224
1225 /**
1226  * Convert Ethernet item to Verbs specification.
1227  *
1228  * @param item[in]
1229  *   Item specification.
1230  * @param default_mask[in]
1231  *   Default bit-masks to use when item->mask is not provided.
1232  * @param data[in, out]
1233  *   User structure.
1234  *
1235  * @return
1236  *   0 on success, a negative errno value otherwise and rte_errno is set.
1237  */
1238 static int
1239 mlx5_flow_create_eth(const struct rte_flow_item *item,
1240                      const void *default_mask,
1241                      struct mlx5_flow_data *data)
1242 {
1243         const struct rte_flow_item_eth *spec = item->spec;
1244         const struct rte_flow_item_eth *mask = item->mask;
1245         struct mlx5_flow_parse *parser = data->parser;
1246         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1247         struct ibv_flow_spec_eth eth = {
1248                 .type = parser->inner | IBV_FLOW_SPEC_ETH,
1249                 .size = eth_size,
1250         };
1251
1252         /* Don't update layer for the inner pattern. */
1253         if (!parser->inner)
1254                 parser->layer = HASH_RXQ_ETH;
1255         if (spec) {
1256                 unsigned int i;
1257
1258                 if (!mask)
1259                         mask = default_mask;
1260                 memcpy(&eth.val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
1261                 memcpy(&eth.val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
1262                 eth.val.ether_type = spec->type;
1263                 memcpy(&eth.mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
1264                 memcpy(&eth.mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
1265                 eth.mask.ether_type = mask->type;
1266                 /* Remove unwanted bits from values. */
1267                 for (i = 0; i < ETHER_ADDR_LEN; ++i) {
1268                         eth.val.dst_mac[i] &= eth.mask.dst_mac[i];
1269                         eth.val.src_mac[i] &= eth.mask.src_mac[i];
1270                 }
1271                 eth.val.ether_type &= eth.mask.ether_type;
1272         }
1273         mlx5_flow_create_copy(parser, &eth, eth_size);
1274         return 0;
1275 }
1276
1277 /**
1278  * Convert VLAN item to Verbs specification.
1279  *
1280  * @param item[in]
1281  *   Item specification.
1282  * @param default_mask[in]
1283  *   Default bit-masks to use when item->mask is not provided.
1284  * @param data[in, out]
1285  *   User structure.
1286  *
1287  * @return
1288  *   0 on success, a negative errno value otherwise and rte_errno is set.
1289  */
1290 static int
1291 mlx5_flow_create_vlan(const struct rte_flow_item *item,
1292                       const void *default_mask,
1293                       struct mlx5_flow_data *data)
1294 {
1295         const struct rte_flow_item_vlan *spec = item->spec;
1296         const struct rte_flow_item_vlan *mask = item->mask;
1297         struct mlx5_flow_parse *parser = data->parser;
1298         struct ibv_flow_spec_eth *eth;
1299         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1300         const char *msg = "VLAN cannot be empty";
1301
1302         if (spec) {
1303                 unsigned int i;
1304                 if (!mask)
1305                         mask = default_mask;
1306
1307                 for (i = 0; i != hash_rxq_init_n; ++i) {
1308                         if (!parser->queue[i].ibv_attr)
1309                                 continue;
1310
1311                         eth = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1312                                        parser->queue[i].offset - eth_size);
1313                         eth->val.vlan_tag = spec->tci;
1314                         eth->mask.vlan_tag = mask->tci;
1315                         eth->val.vlan_tag &= eth->mask.vlan_tag;
1316                         /*
1317                          * From verbs perspective an empty VLAN is equivalent
1318                          * to a packet without VLAN layer.
1319                          */
1320                         if (!eth->mask.vlan_tag)
1321                                 goto error;
1322                         /* Outer TPID cannot be matched. */
1323                         if (eth->mask.ether_type) {
1324                                 msg = "VLAN TPID matching is not supported";
1325                                 goto error;
1326                         }
1327                         eth->val.ether_type = spec->inner_type;
1328                         eth->mask.ether_type = mask->inner_type;
1329                         eth->val.ether_type &= eth->mask.ether_type;
1330                 }
1331                 return 0;
1332         }
1333 error:
1334         return rte_flow_error_set(data->error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
1335                                   item, msg);
1336 }
1337
1338 /**
1339  * Convert IPv4 item to Verbs specification.
1340  *
1341  * @param item[in]
1342  *   Item specification.
1343  * @param default_mask[in]
1344  *   Default bit-masks to use when item->mask is not provided.
1345  * @param data[in, out]
1346  *   User structure.
1347  *
1348  * @return
1349  *   0 on success, a negative errno value otherwise and rte_errno is set.
1350  */
1351 static int
1352 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
1353                       const void *default_mask,
1354                       struct mlx5_flow_data *data)
1355 {
1356         const struct rte_flow_item_ipv4 *spec = item->spec;
1357         const struct rte_flow_item_ipv4 *mask = item->mask;
1358         struct mlx5_flow_parse *parser = data->parser;
1359         unsigned int ipv4_size = sizeof(struct ibv_flow_spec_ipv4_ext);
1360         struct ibv_flow_spec_ipv4_ext ipv4 = {
1361                 .type = parser->inner | IBV_FLOW_SPEC_IPV4_EXT,
1362                 .size = ipv4_size,
1363         };
1364
1365         /* Don't update layer for the inner pattern. */
1366         if (!parser->inner)
1367                 parser->layer = HASH_RXQ_IPV4;
1368         if (spec) {
1369                 if (!mask)
1370                         mask = default_mask;
1371                 ipv4.val = (struct ibv_flow_ipv4_ext_filter){
1372                         .src_ip = spec->hdr.src_addr,
1373                         .dst_ip = spec->hdr.dst_addr,
1374                         .proto = spec->hdr.next_proto_id,
1375                         .tos = spec->hdr.type_of_service,
1376                 };
1377                 ipv4.mask = (struct ibv_flow_ipv4_ext_filter){
1378                         .src_ip = mask->hdr.src_addr,
1379                         .dst_ip = mask->hdr.dst_addr,
1380                         .proto = mask->hdr.next_proto_id,
1381                         .tos = mask->hdr.type_of_service,
1382                 };
1383                 /* Remove unwanted bits from values. */
1384                 ipv4.val.src_ip &= ipv4.mask.src_ip;
1385                 ipv4.val.dst_ip &= ipv4.mask.dst_ip;
1386                 ipv4.val.proto &= ipv4.mask.proto;
1387                 ipv4.val.tos &= ipv4.mask.tos;
1388         }
1389         mlx5_flow_create_copy(parser, &ipv4, ipv4_size);
1390         return 0;
1391 }
1392
1393 /**
1394  * Convert IPv6 item to Verbs specification.
1395  *
1396  * @param item[in]
1397  *   Item specification.
1398  * @param default_mask[in]
1399  *   Default bit-masks to use when item->mask is not provided.
1400  * @param data[in, out]
1401  *   User structure.
1402  *
1403  * @return
1404  *   0 on success, a negative errno value otherwise and rte_errno is set.
1405  */
1406 static int
1407 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
1408                       const void *default_mask,
1409                       struct mlx5_flow_data *data)
1410 {
1411         const struct rte_flow_item_ipv6 *spec = item->spec;
1412         const struct rte_flow_item_ipv6 *mask = item->mask;
1413         struct mlx5_flow_parse *parser = data->parser;
1414         unsigned int ipv6_size = sizeof(struct ibv_flow_spec_ipv6);
1415         struct ibv_flow_spec_ipv6 ipv6 = {
1416                 .type = parser->inner | IBV_FLOW_SPEC_IPV6,
1417                 .size = ipv6_size,
1418         };
1419
1420         /* Don't update layer for the inner pattern. */
1421         if (!parser->inner)
1422                 parser->layer = HASH_RXQ_IPV6;
1423         if (spec) {
1424                 unsigned int i;
1425                 uint32_t vtc_flow_val;
1426                 uint32_t vtc_flow_mask;
1427
1428                 if (!mask)
1429                         mask = default_mask;
1430                 memcpy(&ipv6.val.src_ip, spec->hdr.src_addr,
1431                        RTE_DIM(ipv6.val.src_ip));
1432                 memcpy(&ipv6.val.dst_ip, spec->hdr.dst_addr,
1433                        RTE_DIM(ipv6.val.dst_ip));
1434                 memcpy(&ipv6.mask.src_ip, mask->hdr.src_addr,
1435                        RTE_DIM(ipv6.mask.src_ip));
1436                 memcpy(&ipv6.mask.dst_ip, mask->hdr.dst_addr,
1437                        RTE_DIM(ipv6.mask.dst_ip));
1438                 vtc_flow_val = rte_be_to_cpu_32(spec->hdr.vtc_flow);
1439                 vtc_flow_mask = rte_be_to_cpu_32(mask->hdr.vtc_flow);
1440                 ipv6.val.flow_label =
1441                         rte_cpu_to_be_32((vtc_flow_val & IPV6_HDR_FL_MASK) >>
1442                                          IPV6_HDR_FL_SHIFT);
1443                 ipv6.val.traffic_class = (vtc_flow_val & IPV6_HDR_TC_MASK) >>
1444                                          IPV6_HDR_TC_SHIFT;
1445                 ipv6.val.next_hdr = spec->hdr.proto;
1446                 ipv6.val.hop_limit = spec->hdr.hop_limits;
1447                 ipv6.mask.flow_label =
1448                         rte_cpu_to_be_32((vtc_flow_mask & IPV6_HDR_FL_MASK) >>
1449                                          IPV6_HDR_FL_SHIFT);
1450                 ipv6.mask.traffic_class = (vtc_flow_mask & IPV6_HDR_TC_MASK) >>
1451                                           IPV6_HDR_TC_SHIFT;
1452                 ipv6.mask.next_hdr = mask->hdr.proto;
1453                 ipv6.mask.hop_limit = mask->hdr.hop_limits;
1454                 /* Remove unwanted bits from values. */
1455                 for (i = 0; i < RTE_DIM(ipv6.val.src_ip); ++i) {
1456                         ipv6.val.src_ip[i] &= ipv6.mask.src_ip[i];
1457                         ipv6.val.dst_ip[i] &= ipv6.mask.dst_ip[i];
1458                 }
1459                 ipv6.val.flow_label &= ipv6.mask.flow_label;
1460                 ipv6.val.traffic_class &= ipv6.mask.traffic_class;
1461                 ipv6.val.next_hdr &= ipv6.mask.next_hdr;
1462                 ipv6.val.hop_limit &= ipv6.mask.hop_limit;
1463         }
1464         mlx5_flow_create_copy(parser, &ipv6, ipv6_size);
1465         return 0;
1466 }
1467
1468 /**
1469  * Convert UDP item to Verbs specification.
1470  *
1471  * @param item[in]
1472  *   Item specification.
1473  * @param default_mask[in]
1474  *   Default bit-masks to use when item->mask is not provided.
1475  * @param data[in, out]
1476  *   User structure.
1477  *
1478  * @return
1479  *   0 on success, a negative errno value otherwise and rte_errno is set.
1480  */
1481 static int
1482 mlx5_flow_create_udp(const struct rte_flow_item *item,
1483                      const void *default_mask,
1484                      struct mlx5_flow_data *data)
1485 {
1486         const struct rte_flow_item_udp *spec = item->spec;
1487         const struct rte_flow_item_udp *mask = item->mask;
1488         struct mlx5_flow_parse *parser = data->parser;
1489         unsigned int udp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1490         struct ibv_flow_spec_tcp_udp udp = {
1491                 .type = parser->inner | IBV_FLOW_SPEC_UDP,
1492                 .size = udp_size,
1493         };
1494
1495         /* Don't update layer for the inner pattern. */
1496         if (!parser->inner) {
1497                 if (parser->layer == HASH_RXQ_IPV4)
1498                         parser->layer = HASH_RXQ_UDPV4;
1499                 else
1500                         parser->layer = HASH_RXQ_UDPV6;
1501         }
1502         if (spec) {
1503                 if (!mask)
1504                         mask = default_mask;
1505                 udp.val.dst_port = spec->hdr.dst_port;
1506                 udp.val.src_port = spec->hdr.src_port;
1507                 udp.mask.dst_port = mask->hdr.dst_port;
1508                 udp.mask.src_port = mask->hdr.src_port;
1509                 /* Remove unwanted bits from values. */
1510                 udp.val.src_port &= udp.mask.src_port;
1511                 udp.val.dst_port &= udp.mask.dst_port;
1512         }
1513         mlx5_flow_create_copy(parser, &udp, udp_size);
1514         return 0;
1515 }
1516
1517 /**
1518  * Convert TCP item to Verbs specification.
1519  *
1520  * @param item[in]
1521  *   Item specification.
1522  * @param default_mask[in]
1523  *   Default bit-masks to use when item->mask is not provided.
1524  * @param data[in, out]
1525  *   User structure.
1526  *
1527  * @return
1528  *   0 on success, a negative errno value otherwise and rte_errno is set.
1529  */
1530 static int
1531 mlx5_flow_create_tcp(const struct rte_flow_item *item,
1532                      const void *default_mask,
1533                      struct mlx5_flow_data *data)
1534 {
1535         const struct rte_flow_item_tcp *spec = item->spec;
1536         const struct rte_flow_item_tcp *mask = item->mask;
1537         struct mlx5_flow_parse *parser = data->parser;
1538         unsigned int tcp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1539         struct ibv_flow_spec_tcp_udp tcp = {
1540                 .type = parser->inner | IBV_FLOW_SPEC_TCP,
1541                 .size = tcp_size,
1542         };
1543
1544         /* Don't update layer for the inner pattern. */
1545         if (!parser->inner) {
1546                 if (parser->layer == HASH_RXQ_IPV4)
1547                         parser->layer = HASH_RXQ_TCPV4;
1548                 else
1549                         parser->layer = HASH_RXQ_TCPV6;
1550         }
1551         if (spec) {
1552                 if (!mask)
1553                         mask = default_mask;
1554                 tcp.val.dst_port = spec->hdr.dst_port;
1555                 tcp.val.src_port = spec->hdr.src_port;
1556                 tcp.mask.dst_port = mask->hdr.dst_port;
1557                 tcp.mask.src_port = mask->hdr.src_port;
1558                 /* Remove unwanted bits from values. */
1559                 tcp.val.src_port &= tcp.mask.src_port;
1560                 tcp.val.dst_port &= tcp.mask.dst_port;
1561         }
1562         mlx5_flow_create_copy(parser, &tcp, tcp_size);
1563         return 0;
1564 }
1565
1566 /**
1567  * Convert VXLAN item to Verbs specification.
1568  *
1569  * @param item[in]
1570  *   Item specification.
1571  * @param default_mask[in]
1572  *   Default bit-masks to use when item->mask is not provided.
1573  * @param data[in, out]
1574  *   User structure.
1575  *
1576  * @return
1577  *   0 on success, a negative errno value otherwise and rte_errno is set.
1578  */
1579 static int
1580 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
1581                        const void *default_mask,
1582                        struct mlx5_flow_data *data)
1583 {
1584         const struct rte_flow_item_vxlan *spec = item->spec;
1585         const struct rte_flow_item_vxlan *mask = item->mask;
1586         struct mlx5_flow_parse *parser = data->parser;
1587         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1588         struct ibv_flow_spec_tunnel vxlan = {
1589                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1590                 .size = size,
1591         };
1592         union vni {
1593                 uint32_t vlan_id;
1594                 uint8_t vni[4];
1595         } id;
1596
1597         id.vni[0] = 0;
1598         parser->inner = IBV_FLOW_SPEC_INNER;
1599         if (spec) {
1600                 if (!mask)
1601                         mask = default_mask;
1602                 memcpy(&id.vni[1], spec->vni, 3);
1603                 vxlan.val.tunnel_id = id.vlan_id;
1604                 memcpy(&id.vni[1], mask->vni, 3);
1605                 vxlan.mask.tunnel_id = id.vlan_id;
1606                 /* Remove unwanted bits from values. */
1607                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1608         }
1609         /*
1610          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1611          * layer is defined in the Verbs specification it is interpreted as
1612          * wildcard and all packets will match this rule, if it follows a full
1613          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1614          * before will also match this rule.
1615          * To avoid such situation, VNI 0 is currently refused.
1616          */
1617         if (!vxlan.val.tunnel_id)
1618                 return rte_flow_error_set(data->error, EINVAL,
1619                                           RTE_FLOW_ERROR_TYPE_ITEM,
1620                                           item,
1621                                           "VxLAN vni cannot be 0");
1622         mlx5_flow_create_copy(parser, &vxlan, size);
1623         return 0;
1624 }
1625
1626 /**
1627  * Convert mark/flag action to Verbs specification.
1628  *
1629  * @param parser
1630  *   Internal parser structure.
1631  * @param mark_id
1632  *   Mark identifier.
1633  *
1634  * @return
1635  *   0 on success, a negative errno value otherwise and rte_errno is set.
1636  */
1637 static int
1638 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id)
1639 {
1640         unsigned int size = sizeof(struct ibv_flow_spec_action_tag);
1641         struct ibv_flow_spec_action_tag tag = {
1642                 .type = IBV_FLOW_SPEC_ACTION_TAG,
1643                 .size = size,
1644                 .tag_id = mlx5_flow_mark_set(mark_id),
1645         };
1646
1647         assert(parser->mark);
1648         mlx5_flow_create_copy(parser, &tag, size);
1649         return 0;
1650 }
1651
1652 /**
1653  * Convert count action to Verbs specification.
1654  *
1655  * @param dev
1656  *   Pointer to Ethernet device.
1657  * @param parser
1658  *   Pointer to MLX5 flow parser structure.
1659  *
1660  * @return
1661  *   0 on success, a negative errno value otherwise and rte_errno is set.
1662  */
1663 static int
1664 mlx5_flow_create_count(struct rte_eth_dev *dev __rte_unused,
1665                        struct mlx5_flow_parse *parser __rte_unused)
1666 {
1667 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
1668         struct priv *priv = dev->data->dev_private;
1669         unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
1670         struct ibv_counter_set_init_attr init_attr = {0};
1671         struct ibv_flow_spec_counter_action counter = {
1672                 .type = IBV_FLOW_SPEC_ACTION_COUNT,
1673                 .size = size,
1674                 .counter_set_handle = 0,
1675         };
1676
1677         init_attr.counter_set_id = 0;
1678         parser->cs = mlx5_glue->create_counter_set(priv->ctx, &init_attr);
1679         if (!parser->cs) {
1680                 rte_errno = EINVAL;
1681                 return -rte_errno;
1682         }
1683         counter.counter_set_handle = parser->cs->handle;
1684         mlx5_flow_create_copy(parser, &counter, size);
1685 #endif
1686         return 0;
1687 }
1688
1689 /**
1690  * Complete flow rule creation with a drop queue.
1691  *
1692  * @param dev
1693  *   Pointer to Ethernet device.
1694  * @param parser
1695  *   Internal parser structure.
1696  * @param flow
1697  *   Pointer to the rte_flow.
1698  * @param[out] error
1699  *   Perform verbose error reporting if not NULL.
1700  *
1701  * @return
1702  *   0 on success, a negative errno value otherwise and rte_errno is set.
1703  */
1704 static int
1705 mlx5_flow_create_action_queue_drop(struct rte_eth_dev *dev,
1706                                    struct mlx5_flow_parse *parser,
1707                                    struct rte_flow *flow,
1708                                    struct rte_flow_error *error)
1709 {
1710         struct priv *priv = dev->data->dev_private;
1711         struct ibv_flow_spec_action_drop *drop;
1712         unsigned int size = sizeof(struct ibv_flow_spec_action_drop);
1713
1714         assert(priv->pd);
1715         assert(priv->ctx);
1716         flow->drop = 1;
1717         drop = (void *)((uintptr_t)parser->queue[HASH_RXQ_ETH].ibv_attr +
1718                         parser->queue[HASH_RXQ_ETH].offset);
1719         *drop = (struct ibv_flow_spec_action_drop){
1720                         .type = IBV_FLOW_SPEC_ACTION_DROP,
1721                         .size = size,
1722         };
1723         ++parser->queue[HASH_RXQ_ETH].ibv_attr->num_of_specs;
1724         parser->queue[HASH_RXQ_ETH].offset += size;
1725         flow->frxq[HASH_RXQ_ETH].ibv_attr =
1726                 parser->queue[HASH_RXQ_ETH].ibv_attr;
1727         if (parser->count)
1728                 flow->cs = parser->cs;
1729         if (!priv->dev->data->dev_started)
1730                 return 0;
1731         parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
1732         flow->frxq[HASH_RXQ_ETH].ibv_flow =
1733                 mlx5_glue->create_flow(priv->flow_drop_queue->qp,
1734                                        flow->frxq[HASH_RXQ_ETH].ibv_attr);
1735         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
1736                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1737                                    NULL, "flow rule creation failure");
1738                 goto error;
1739         }
1740         return 0;
1741 error:
1742         assert(flow);
1743         if (flow->frxq[HASH_RXQ_ETH].ibv_flow) {
1744                 claim_zero(mlx5_glue->destroy_flow
1745                            (flow->frxq[HASH_RXQ_ETH].ibv_flow));
1746                 flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
1747         }
1748         if (flow->frxq[HASH_RXQ_ETH].ibv_attr) {
1749                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
1750                 flow->frxq[HASH_RXQ_ETH].ibv_attr = NULL;
1751         }
1752         if (flow->cs) {
1753                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
1754                 flow->cs = NULL;
1755                 parser->cs = NULL;
1756         }
1757         return -rte_errno;
1758 }
1759
1760 /**
1761  * Create hash Rx queues when RSS is enabled.
1762  *
1763  * @param dev
1764  *   Pointer to Ethernet device.
1765  * @param parser
1766  *   Internal parser structure.
1767  * @param flow
1768  *   Pointer to the rte_flow.
1769  * @param[out] error
1770  *   Perform verbose error reporting if not NULL.
1771  *
1772  * @return
1773  *   0 on success, a negative errno value otherwise and rte_errno is set.
1774  */
1775 static int
1776 mlx5_flow_create_action_queue_rss(struct rte_eth_dev *dev,
1777                                   struct mlx5_flow_parse *parser,
1778                                   struct rte_flow *flow,
1779                                   struct rte_flow_error *error)
1780 {
1781         struct priv *priv = dev->data->dev_private;
1782         unsigned int i;
1783
1784         for (i = 0; i != hash_rxq_init_n; ++i) {
1785                 uint64_t hash_fields;
1786
1787                 if (!parser->queue[i].ibv_attr)
1788                         continue;
1789                 flow->frxq[i].ibv_attr = parser->queue[i].ibv_attr;
1790                 parser->queue[i].ibv_attr = NULL;
1791                 hash_fields = hash_rxq_init[i].hash_fields;
1792                 if (!priv->dev->data->dev_started)
1793                         continue;
1794                 flow->frxq[i].hrxq =
1795                         mlx5_hrxq_get(dev,
1796                                       parser->rss_conf.key,
1797                                       parser->rss_conf.key_len,
1798                                       hash_fields,
1799                                       parser->rss_conf.queue,
1800                                       parser->rss_conf.queue_num);
1801                 if (flow->frxq[i].hrxq)
1802                         continue;
1803                 flow->frxq[i].hrxq =
1804                         mlx5_hrxq_new(dev,
1805                                       parser->rss_conf.key,
1806                                       parser->rss_conf.key_len,
1807                                       hash_fields,
1808                                       parser->rss_conf.queue,
1809                                       parser->rss_conf.queue_num);
1810                 if (!flow->frxq[i].hrxq) {
1811                         return rte_flow_error_set(error, ENOMEM,
1812                                                   RTE_FLOW_ERROR_TYPE_HANDLE,
1813                                                   NULL,
1814                                                   "cannot create hash rxq");
1815                 }
1816         }
1817         return 0;
1818 }
1819
1820 /**
1821  * Complete flow rule creation.
1822  *
1823  * @param dev
1824  *   Pointer to Ethernet device.
1825  * @param parser
1826  *   Internal parser structure.
1827  * @param flow
1828  *   Pointer to the rte_flow.
1829  * @param[out] error
1830  *   Perform verbose error reporting if not NULL.
1831  *
1832  * @return
1833  *   0 on success, a negative errno value otherwise and rte_errno is set.
1834  */
1835 static int
1836 mlx5_flow_create_action_queue(struct rte_eth_dev *dev,
1837                               struct mlx5_flow_parse *parser,
1838                               struct rte_flow *flow,
1839                               struct rte_flow_error *error)
1840 {
1841         struct priv *priv = dev->data->dev_private;
1842         int ret;
1843         unsigned int i;
1844         unsigned int flows_n = 0;
1845
1846         assert(priv->pd);
1847         assert(priv->ctx);
1848         assert(!parser->drop);
1849         ret = mlx5_flow_create_action_queue_rss(dev, parser, flow, error);
1850         if (ret)
1851                 goto error;
1852         if (parser->count)
1853                 flow->cs = parser->cs;
1854         if (!priv->dev->data->dev_started)
1855                 return 0;
1856         for (i = 0; i != hash_rxq_init_n; ++i) {
1857                 if (!flow->frxq[i].hrxq)
1858                         continue;
1859                 flow->frxq[i].ibv_flow =
1860                         mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
1861                                                flow->frxq[i].ibv_attr);
1862                 if (!flow->frxq[i].ibv_flow) {
1863                         rte_flow_error_set(error, ENOMEM,
1864                                            RTE_FLOW_ERROR_TYPE_HANDLE,
1865                                            NULL, "flow rule creation failure");
1866                         goto error;
1867                 }
1868                 ++flows_n;
1869                 DRV_LOG(DEBUG, "port %u %p type %d QP %p ibv_flow %p",
1870                         dev->data->port_id,
1871                         (void *)flow, i,
1872                         (void *)flow->frxq[i].hrxq,
1873                         (void *)flow->frxq[i].ibv_flow);
1874         }
1875         if (!flows_n) {
1876                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
1877                                    NULL, "internal error in flow creation");
1878                 goto error;
1879         }
1880         for (i = 0; i != parser->rss_conf.queue_num; ++i) {
1881                 struct mlx5_rxq_data *q =
1882                         (*priv->rxqs)[parser->rss_conf.queue[i]];
1883
1884                 q->mark |= parser->mark;
1885         }
1886         return 0;
1887 error:
1888         ret = rte_errno; /* Save rte_errno before cleanup. */
1889         assert(flow);
1890         for (i = 0; i != hash_rxq_init_n; ++i) {
1891                 if (flow->frxq[i].ibv_flow) {
1892                         struct ibv_flow *ibv_flow = flow->frxq[i].ibv_flow;
1893
1894                         claim_zero(mlx5_glue->destroy_flow(ibv_flow));
1895                 }
1896                 if (flow->frxq[i].hrxq)
1897                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
1898                 if (flow->frxq[i].ibv_attr)
1899                         rte_free(flow->frxq[i].ibv_attr);
1900         }
1901         if (flow->cs) {
1902                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
1903                 flow->cs = NULL;
1904                 parser->cs = NULL;
1905         }
1906         rte_errno = ret; /* Restore rte_errno. */
1907         return -rte_errno;
1908 }
1909
1910 /**
1911  * Convert a flow.
1912  *
1913  * @param dev
1914  *   Pointer to Ethernet device.
1915  * @param list
1916  *   Pointer to a TAILQ flow list.
1917  * @param[in] attr
1918  *   Flow rule attributes.
1919  * @param[in] pattern
1920  *   Pattern specification (list terminated by the END pattern item).
1921  * @param[in] actions
1922  *   Associated actions (list terminated by the END action).
1923  * @param[out] error
1924  *   Perform verbose error reporting if not NULL.
1925  *
1926  * @return
1927  *   A flow on success, NULL otherwise and rte_errno is set.
1928  */
1929 static struct rte_flow *
1930 mlx5_flow_list_create(struct rte_eth_dev *dev,
1931                       struct mlx5_flows *list,
1932                       const struct rte_flow_attr *attr,
1933                       const struct rte_flow_item items[],
1934                       const struct rte_flow_action actions[],
1935                       struct rte_flow_error *error)
1936 {
1937         struct mlx5_flow_parse parser = { .create = 1, };
1938         struct rte_flow *flow = NULL;
1939         unsigned int i;
1940         int ret;
1941
1942         ret = mlx5_flow_convert(dev, attr, items, actions, error, &parser);
1943         if (ret)
1944                 goto exit;
1945         flow = rte_calloc(__func__, 1,
1946                           sizeof(*flow) +
1947                           parser.rss_conf.queue_num * sizeof(uint16_t),
1948                           0);
1949         if (!flow) {
1950                 rte_flow_error_set(error, ENOMEM,
1951                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1952                                    NULL,
1953                                    "cannot allocate flow memory");
1954                 return NULL;
1955         }
1956         /* Copy configuration. */
1957         flow->queues = (uint16_t (*)[])(flow + 1);
1958         flow->rss_conf = (struct rte_flow_action_rss){
1959                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
1960                 .level = 0,
1961                 .types = parser.rss_conf.types,
1962                 .key_len = parser.rss_conf.key_len,
1963                 .queue_num = parser.rss_conf.queue_num,
1964                 .key = memcpy(flow->rss_key, parser.rss_conf.key,
1965                               sizeof(*parser.rss_conf.key) *
1966                               parser.rss_conf.key_len),
1967                 .queue = memcpy(flow->queues, parser.rss_conf.queue,
1968                                 sizeof(*parser.rss_conf.queue) *
1969                                 parser.rss_conf.queue_num),
1970         };
1971         flow->mark = parser.mark;
1972         /* finalise the flow. */
1973         if (parser.drop)
1974                 ret = mlx5_flow_create_action_queue_drop(dev, &parser, flow,
1975                                                          error);
1976         else
1977                 ret = mlx5_flow_create_action_queue(dev, &parser, flow, error);
1978         if (ret)
1979                 goto exit;
1980         TAILQ_INSERT_TAIL(list, flow, next);
1981         DRV_LOG(DEBUG, "port %u flow created %p", dev->data->port_id,
1982                 (void *)flow);
1983         return flow;
1984 exit:
1985         DRV_LOG(ERR, "port %u flow creation error: %s", dev->data->port_id,
1986                 error->message);
1987         for (i = 0; i != hash_rxq_init_n; ++i) {
1988                 if (parser.queue[i].ibv_attr)
1989                         rte_free(parser.queue[i].ibv_attr);
1990         }
1991         rte_free(flow);
1992         return NULL;
1993 }
1994
1995 /**
1996  * Validate a flow supported by the NIC.
1997  *
1998  * @see rte_flow_validate()
1999  * @see rte_flow_ops
2000  */
2001 int
2002 mlx5_flow_validate(struct rte_eth_dev *dev,
2003                    const struct rte_flow_attr *attr,
2004                    const struct rte_flow_item items[],
2005                    const struct rte_flow_action actions[],
2006                    struct rte_flow_error *error)
2007 {
2008         struct mlx5_flow_parse parser = { .create = 0, };
2009
2010         return mlx5_flow_convert(dev, attr, items, actions, error, &parser);
2011 }
2012
2013 /**
2014  * Create a flow.
2015  *
2016  * @see rte_flow_create()
2017  * @see rte_flow_ops
2018  */
2019 struct rte_flow *
2020 mlx5_flow_create(struct rte_eth_dev *dev,
2021                  const struct rte_flow_attr *attr,
2022                  const struct rte_flow_item items[],
2023                  const struct rte_flow_action actions[],
2024                  struct rte_flow_error *error)
2025 {
2026         struct priv *priv = dev->data->dev_private;
2027
2028         return mlx5_flow_list_create(dev, &priv->flows, attr, items, actions,
2029                                      error);
2030 }
2031
2032 /**
2033  * Destroy a flow in a list.
2034  *
2035  * @param dev
2036  *   Pointer to Ethernet device.
2037  * @param list
2038  *   Pointer to a TAILQ flow list.
2039  * @param[in] flow
2040  *   Flow to destroy.
2041  */
2042 static void
2043 mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2044                        struct rte_flow *flow)
2045 {
2046         struct priv *priv = dev->data->dev_private;
2047         unsigned int i;
2048
2049         if (flow->drop || !flow->mark)
2050                 goto free;
2051         for (i = 0; i != flow->rss_conf.queue_num; ++i) {
2052                 struct rte_flow *tmp;
2053                 int mark = 0;
2054
2055                 /*
2056                  * To remove the mark from the queue, the queue must not be
2057                  * present in any other marked flow (RSS or not).
2058                  */
2059                 TAILQ_FOREACH(tmp, list, next) {
2060                         unsigned int j;
2061                         uint16_t *tqs = NULL;
2062                         uint16_t tq_n = 0;
2063
2064                         if (!tmp->mark)
2065                                 continue;
2066                         for (j = 0; j != hash_rxq_init_n; ++j) {
2067                                 if (!tmp->frxq[j].hrxq)
2068                                         continue;
2069                                 tqs = tmp->frxq[j].hrxq->ind_table->queues;
2070                                 tq_n = tmp->frxq[j].hrxq->ind_table->queues_n;
2071                         }
2072                         if (!tq_n)
2073                                 continue;
2074                         for (j = 0; (j != tq_n) && !mark; j++)
2075                                 if (tqs[j] == (*flow->queues)[i])
2076                                         mark = 1;
2077                 }
2078                 (*priv->rxqs)[(*flow->queues)[i]]->mark = mark;
2079         }
2080 free:
2081         if (flow->drop) {
2082                 if (flow->frxq[HASH_RXQ_ETH].ibv_flow)
2083                         claim_zero(mlx5_glue->destroy_flow
2084                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2085                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
2086         } else {
2087                 for (i = 0; i != hash_rxq_init_n; ++i) {
2088                         struct mlx5_flow *frxq = &flow->frxq[i];
2089
2090                         if (frxq->ibv_flow)
2091                                 claim_zero(mlx5_glue->destroy_flow
2092                                            (frxq->ibv_flow));
2093                         if (frxq->hrxq)
2094                                 mlx5_hrxq_release(dev, frxq->hrxq);
2095                         if (frxq->ibv_attr)
2096                                 rte_free(frxq->ibv_attr);
2097                 }
2098         }
2099         if (flow->cs) {
2100                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2101                 flow->cs = NULL;
2102         }
2103         TAILQ_REMOVE(list, flow, next);
2104         DRV_LOG(DEBUG, "port %u flow destroyed %p", dev->data->port_id,
2105                 (void *)flow);
2106         rte_free(flow);
2107 }
2108
2109 /**
2110  * Destroy all flows.
2111  *
2112  * @param dev
2113  *   Pointer to Ethernet device.
2114  * @param list
2115  *   Pointer to a TAILQ flow list.
2116  */
2117 void
2118 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2119 {
2120         while (!TAILQ_EMPTY(list)) {
2121                 struct rte_flow *flow;
2122
2123                 flow = TAILQ_FIRST(list);
2124                 mlx5_flow_list_destroy(dev, list, flow);
2125         }
2126 }
2127
2128 /**
2129  * Create drop queue.
2130  *
2131  * @param dev
2132  *   Pointer to Ethernet device.
2133  *
2134  * @return
2135  *   0 on success, a negative errno value otherwise and rte_errno is set.
2136  */
2137 int
2138 mlx5_flow_create_drop_queue(struct rte_eth_dev *dev)
2139 {
2140         struct priv *priv = dev->data->dev_private;
2141         struct mlx5_hrxq_drop *fdq = NULL;
2142
2143         assert(priv->pd);
2144         assert(priv->ctx);
2145         fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0);
2146         if (!fdq) {
2147                 DRV_LOG(WARNING,
2148                         "port %u cannot allocate memory for drop queue",
2149                         dev->data->port_id);
2150                 rte_errno = ENOMEM;
2151                 return -rte_errno;
2152         }
2153         fdq->cq = mlx5_glue->create_cq(priv->ctx, 1, NULL, NULL, 0);
2154         if (!fdq->cq) {
2155                 DRV_LOG(WARNING, "port %u cannot allocate CQ for drop queue",
2156                         dev->data->port_id);
2157                 rte_errno = errno;
2158                 goto error;
2159         }
2160         fdq->wq = mlx5_glue->create_wq
2161                 (priv->ctx,
2162                  &(struct ibv_wq_init_attr){
2163                         .wq_type = IBV_WQT_RQ,
2164                         .max_wr = 1,
2165                         .max_sge = 1,
2166                         .pd = priv->pd,
2167                         .cq = fdq->cq,
2168                  });
2169         if (!fdq->wq) {
2170                 DRV_LOG(WARNING, "port %u cannot allocate WQ for drop queue",
2171                         dev->data->port_id);
2172                 rte_errno = errno;
2173                 goto error;
2174         }
2175         fdq->ind_table = mlx5_glue->create_rwq_ind_table
2176                 (priv->ctx,
2177                  &(struct ibv_rwq_ind_table_init_attr){
2178                         .log_ind_tbl_size = 0,
2179                         .ind_tbl = &fdq->wq,
2180                         .comp_mask = 0,
2181                  });
2182         if (!fdq->ind_table) {
2183                 DRV_LOG(WARNING,
2184                         "port %u cannot allocate indirection table for drop"
2185                         " queue",
2186                         dev->data->port_id);
2187                 rte_errno = errno;
2188                 goto error;
2189         }
2190         fdq->qp = mlx5_glue->create_qp_ex
2191                 (priv->ctx,
2192                  &(struct ibv_qp_init_attr_ex){
2193                         .qp_type = IBV_QPT_RAW_PACKET,
2194                         .comp_mask =
2195                                 IBV_QP_INIT_ATTR_PD |
2196                                 IBV_QP_INIT_ATTR_IND_TABLE |
2197                                 IBV_QP_INIT_ATTR_RX_HASH,
2198                         .rx_hash_conf = (struct ibv_rx_hash_conf){
2199                                 .rx_hash_function =
2200                                         IBV_RX_HASH_FUNC_TOEPLITZ,
2201                                 .rx_hash_key_len = rss_hash_default_key_len,
2202                                 .rx_hash_key = rss_hash_default_key,
2203                                 .rx_hash_fields_mask = 0,
2204                                 },
2205                         .rwq_ind_tbl = fdq->ind_table,
2206                         .pd = priv->pd
2207                  });
2208         if (!fdq->qp) {
2209                 DRV_LOG(WARNING, "port %u cannot allocate QP for drop queue",
2210                         dev->data->port_id);
2211                 rte_errno = errno;
2212                 goto error;
2213         }
2214         priv->flow_drop_queue = fdq;
2215         return 0;
2216 error:
2217         if (fdq->qp)
2218                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2219         if (fdq->ind_table)
2220                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2221         if (fdq->wq)
2222                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2223         if (fdq->cq)
2224                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2225         if (fdq)
2226                 rte_free(fdq);
2227         priv->flow_drop_queue = NULL;
2228         return -rte_errno;
2229 }
2230
2231 /**
2232  * Delete drop queue.
2233  *
2234  * @param dev
2235  *   Pointer to Ethernet device.
2236  */
2237 void
2238 mlx5_flow_delete_drop_queue(struct rte_eth_dev *dev)
2239 {
2240         struct priv *priv = dev->data->dev_private;
2241         struct mlx5_hrxq_drop *fdq = priv->flow_drop_queue;
2242
2243         if (!fdq)
2244                 return;
2245         if (fdq->qp)
2246                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2247         if (fdq->ind_table)
2248                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2249         if (fdq->wq)
2250                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2251         if (fdq->cq)
2252                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2253         rte_free(fdq);
2254         priv->flow_drop_queue = NULL;
2255 }
2256
2257 /**
2258  * Remove all flows.
2259  *
2260  * @param dev
2261  *   Pointer to Ethernet device.
2262  * @param list
2263  *   Pointer to a TAILQ flow list.
2264  */
2265 void
2266 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2267 {
2268         struct priv *priv = dev->data->dev_private;
2269         struct rte_flow *flow;
2270
2271         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
2272                 unsigned int i;
2273                 struct mlx5_ind_table_ibv *ind_tbl = NULL;
2274
2275                 if (flow->drop) {
2276                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow)
2277                                 continue;
2278                         claim_zero(mlx5_glue->destroy_flow
2279                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2280                         flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
2281                         DRV_LOG(DEBUG, "port %u flow %p removed",
2282                                 dev->data->port_id, (void *)flow);
2283                         /* Next flow. */
2284                         continue;
2285                 }
2286                 /* Verify the flow has not already been cleaned. */
2287                 for (i = 0; i != hash_rxq_init_n; ++i) {
2288                         if (!flow->frxq[i].ibv_flow)
2289                                 continue;
2290                         /*
2291                          * Indirection table may be necessary to remove the
2292                          * flags in the Rx queues.
2293                          * This helps to speed-up the process by avoiding
2294                          * another loop.
2295                          */
2296                         ind_tbl = flow->frxq[i].hrxq->ind_table;
2297                         break;
2298                 }
2299                 if (i == hash_rxq_init_n)
2300                         return;
2301                 if (flow->mark) {
2302                         assert(ind_tbl);
2303                         for (i = 0; i != ind_tbl->queues_n; ++i)
2304                                 (*priv->rxqs)[ind_tbl->queues[i]]->mark = 0;
2305                 }
2306                 for (i = 0; i != hash_rxq_init_n; ++i) {
2307                         if (!flow->frxq[i].ibv_flow)
2308                                 continue;
2309                         claim_zero(mlx5_glue->destroy_flow
2310                                    (flow->frxq[i].ibv_flow));
2311                         flow->frxq[i].ibv_flow = NULL;
2312                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
2313                         flow->frxq[i].hrxq = NULL;
2314                 }
2315                 DRV_LOG(DEBUG, "port %u flow %p removed", dev->data->port_id,
2316                         (void *)flow);
2317         }
2318 }
2319
2320 /**
2321  * Add all flows.
2322  *
2323  * @param dev
2324  *   Pointer to Ethernet device.
2325  * @param list
2326  *   Pointer to a TAILQ flow list.
2327  *
2328  * @return
2329  *   0 on success, a negative errno value otherwise and rte_errno is set.
2330  */
2331 int
2332 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2333 {
2334         struct priv *priv = dev->data->dev_private;
2335         struct rte_flow *flow;
2336
2337         TAILQ_FOREACH(flow, list, next) {
2338                 unsigned int i;
2339
2340                 if (flow->drop) {
2341                         flow->frxq[HASH_RXQ_ETH].ibv_flow =
2342                                 mlx5_glue->create_flow
2343                                 (priv->flow_drop_queue->qp,
2344                                  flow->frxq[HASH_RXQ_ETH].ibv_attr);
2345                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2346                                 DRV_LOG(DEBUG,
2347                                         "port %u flow %p cannot be applied",
2348                                         dev->data->port_id, (void *)flow);
2349                                 rte_errno = EINVAL;
2350                                 return -rte_errno;
2351                         }
2352                         DRV_LOG(DEBUG, "port %u flow %p applied",
2353                                 dev->data->port_id, (void *)flow);
2354                         /* Next flow. */
2355                         continue;
2356                 }
2357                 for (i = 0; i != hash_rxq_init_n; ++i) {
2358                         if (!flow->frxq[i].ibv_attr)
2359                                 continue;
2360                         flow->frxq[i].hrxq =
2361                                 mlx5_hrxq_get(dev, flow->rss_conf.key,
2362                                               flow->rss_conf.key_len,
2363                                               hash_rxq_init[i].hash_fields,
2364                                               flow->rss_conf.queue,
2365                                               flow->rss_conf.queue_num);
2366                         if (flow->frxq[i].hrxq)
2367                                 goto flow_create;
2368                         flow->frxq[i].hrxq =
2369                                 mlx5_hrxq_new(dev, flow->rss_conf.key,
2370                                               flow->rss_conf.key_len,
2371                                               hash_rxq_init[i].hash_fields,
2372                                               flow->rss_conf.queue,
2373                                               flow->rss_conf.queue_num);
2374                         if (!flow->frxq[i].hrxq) {
2375                                 DRV_LOG(DEBUG,
2376                                         "port %u flow %p cannot be applied",
2377                                         dev->data->port_id, (void *)flow);
2378                                 rte_errno = EINVAL;
2379                                 return -rte_errno;
2380                         }
2381 flow_create:
2382                         flow->frxq[i].ibv_flow =
2383                                 mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
2384                                                        flow->frxq[i].ibv_attr);
2385                         if (!flow->frxq[i].ibv_flow) {
2386                                 DRV_LOG(DEBUG,
2387                                         "port %u flow %p cannot be applied",
2388                                         dev->data->port_id, (void *)flow);
2389                                 rte_errno = EINVAL;
2390                                 return -rte_errno;
2391                         }
2392                         DRV_LOG(DEBUG, "port %u flow %p applied",
2393                                 dev->data->port_id, (void *)flow);
2394                 }
2395                 if (!flow->mark)
2396                         continue;
2397                 for (i = 0; i != flow->rss_conf.queue_num; ++i)
2398                         (*priv->rxqs)[flow->rss_conf.queue[i]]->mark = 1;
2399         }
2400         return 0;
2401 }
2402
2403 /**
2404  * Verify the flow list is empty
2405  *
2406  * @param dev
2407  *  Pointer to Ethernet device.
2408  *
2409  * @return the number of flows not released.
2410  */
2411 int
2412 mlx5_flow_verify(struct rte_eth_dev *dev)
2413 {
2414         struct priv *priv = dev->data->dev_private;
2415         struct rte_flow *flow;
2416         int ret = 0;
2417
2418         TAILQ_FOREACH(flow, &priv->flows, next) {
2419                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2420                         dev->data->port_id, (void *)flow);
2421                 ++ret;
2422         }
2423         return ret;
2424 }
2425
2426 /**
2427  * Enable a control flow configured from the control plane.
2428  *
2429  * @param dev
2430  *   Pointer to Ethernet device.
2431  * @param eth_spec
2432  *   An Ethernet flow spec to apply.
2433  * @param eth_mask
2434  *   An Ethernet flow mask to apply.
2435  * @param vlan_spec
2436  *   A VLAN flow spec to apply.
2437  * @param vlan_mask
2438  *   A VLAN flow mask to apply.
2439  *
2440  * @return
2441  *   0 on success, a negative errno value otherwise and rte_errno is set.
2442  */
2443 int
2444 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2445                     struct rte_flow_item_eth *eth_spec,
2446                     struct rte_flow_item_eth *eth_mask,
2447                     struct rte_flow_item_vlan *vlan_spec,
2448                     struct rte_flow_item_vlan *vlan_mask)
2449 {
2450         struct priv *priv = dev->data->dev_private;
2451         const struct rte_flow_attr attr = {
2452                 .ingress = 1,
2453                 .priority = MLX5_CTRL_FLOW_PRIORITY,
2454         };
2455         struct rte_flow_item items[] = {
2456                 {
2457                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2458                         .spec = eth_spec,
2459                         .last = NULL,
2460                         .mask = eth_mask,
2461                 },
2462                 {
2463                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2464                                 RTE_FLOW_ITEM_TYPE_END,
2465                         .spec = vlan_spec,
2466                         .last = NULL,
2467                         .mask = vlan_mask,
2468                 },
2469                 {
2470                         .type = RTE_FLOW_ITEM_TYPE_END,
2471                 },
2472         };
2473         uint16_t queue[priv->reta_idx_n];
2474         struct rte_flow_action_rss action_rss = {
2475                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2476                 .level = 0,
2477                 .types = priv->rss_conf.rss_hf,
2478                 .key_len = priv->rss_conf.rss_key_len,
2479                 .queue_num = priv->reta_idx_n,
2480                 .key = priv->rss_conf.rss_key,
2481                 .queue = queue,
2482         };
2483         struct rte_flow_action actions[] = {
2484                 {
2485                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2486                         .conf = &action_rss,
2487                 },
2488                 {
2489                         .type = RTE_FLOW_ACTION_TYPE_END,
2490                 },
2491         };
2492         struct rte_flow *flow;
2493         struct rte_flow_error error;
2494         unsigned int i;
2495
2496         if (!priv->reta_idx_n) {
2497                 rte_errno = EINVAL;
2498                 return -rte_errno;
2499         }
2500         for (i = 0; i != priv->reta_idx_n; ++i)
2501                 queue[i] = (*priv->reta_idx)[i];
2502         flow = mlx5_flow_list_create(dev, &priv->ctrl_flows, &attr, items,
2503                                      actions, &error);
2504         if (!flow)
2505                 return -rte_errno;
2506         return 0;
2507 }
2508
2509 /**
2510  * Enable a flow control configured from the control plane.
2511  *
2512  * @param dev
2513  *   Pointer to Ethernet device.
2514  * @param eth_spec
2515  *   An Ethernet flow spec to apply.
2516  * @param eth_mask
2517  *   An Ethernet flow mask to apply.
2518  *
2519  * @return
2520  *   0 on success, a negative errno value otherwise and rte_errno is set.
2521  */
2522 int
2523 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2524                struct rte_flow_item_eth *eth_spec,
2525                struct rte_flow_item_eth *eth_mask)
2526 {
2527         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2528 }
2529
2530 /**
2531  * Destroy a flow.
2532  *
2533  * @see rte_flow_destroy()
2534  * @see rte_flow_ops
2535  */
2536 int
2537 mlx5_flow_destroy(struct rte_eth_dev *dev,
2538                   struct rte_flow *flow,
2539                   struct rte_flow_error *error __rte_unused)
2540 {
2541         struct priv *priv = dev->data->dev_private;
2542
2543         mlx5_flow_list_destroy(dev, &priv->flows, flow);
2544         return 0;
2545 }
2546
2547 /**
2548  * Destroy all flows.
2549  *
2550  * @see rte_flow_flush()
2551  * @see rte_flow_ops
2552  */
2553 int
2554 mlx5_flow_flush(struct rte_eth_dev *dev,
2555                 struct rte_flow_error *error __rte_unused)
2556 {
2557         struct priv *priv = dev->data->dev_private;
2558
2559         mlx5_flow_list_flush(dev, &priv->flows);
2560         return 0;
2561 }
2562
2563 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
2564 /**
2565  * Query flow counter.
2566  *
2567  * @param cs
2568  *   the counter set.
2569  * @param counter_value
2570  *   returned data from the counter.
2571  *
2572  * @return
2573  *   0 on success, a negative errno value otherwise and rte_errno is set.
2574  */
2575 static int
2576 mlx5_flow_query_count(struct ibv_counter_set *cs,
2577                       struct mlx5_flow_counter_stats *counter_stats,
2578                       struct rte_flow_query_count *query_count,
2579                       struct rte_flow_error *error)
2580 {
2581         uint64_t counters[2];
2582         struct ibv_query_counter_set_attr query_cs_attr = {
2583                 .cs = cs,
2584                 .query_flags = IBV_COUNTER_SET_FORCE_UPDATE,
2585         };
2586         struct ibv_counter_set_data query_out = {
2587                 .out = counters,
2588                 .outlen = 2 * sizeof(uint64_t),
2589         };
2590         int err = mlx5_glue->query_counter_set(&query_cs_attr, &query_out);
2591
2592         if (err)
2593                 return rte_flow_error_set(error, err,
2594                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2595                                           NULL,
2596                                           "cannot read counter");
2597         query_count->hits_set = 1;
2598         query_count->bytes_set = 1;
2599         query_count->hits = counters[0] - counter_stats->hits;
2600         query_count->bytes = counters[1] - counter_stats->bytes;
2601         if (query_count->reset) {
2602                 counter_stats->hits = counters[0];
2603                 counter_stats->bytes = counters[1];
2604         }
2605         return 0;
2606 }
2607
2608 /**
2609  * Query a flows.
2610  *
2611  * @see rte_flow_query()
2612  * @see rte_flow_ops
2613  */
2614 int
2615 mlx5_flow_query(struct rte_eth_dev *dev __rte_unused,
2616                 struct rte_flow *flow,
2617                 enum rte_flow_action_type action __rte_unused,
2618                 void *data,
2619                 struct rte_flow_error *error)
2620 {
2621         if (flow->cs) {
2622                 int ret;
2623
2624                 ret = mlx5_flow_query_count(flow->cs,
2625                                             &flow->counter_stats,
2626                                             (struct rte_flow_query_count *)data,
2627                                             error);
2628                 if (ret)
2629                         return ret;
2630         } else {
2631                 return rte_flow_error_set(error, EINVAL,
2632                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2633                                           NULL,
2634                                           "no counter found for flow");
2635         }
2636         return 0;
2637 }
2638 #endif
2639
2640 /**
2641  * Isolated mode.
2642  *
2643  * @see rte_flow_isolate()
2644  * @see rte_flow_ops
2645  */
2646 int
2647 mlx5_flow_isolate(struct rte_eth_dev *dev,
2648                   int enable,
2649                   struct rte_flow_error *error)
2650 {
2651         struct priv *priv = dev->data->dev_private;
2652
2653         if (dev->data->dev_started) {
2654                 rte_flow_error_set(error, EBUSY,
2655                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2656                                    NULL,
2657                                    "port must be stopped first");
2658                 return -rte_errno;
2659         }
2660         priv->isolated = !!enable;
2661         if (enable)
2662                 priv->dev->dev_ops = &mlx5_dev_ops_isolate;
2663         else
2664                 priv->dev->dev_ops = &mlx5_dev_ops;
2665         return 0;
2666 }
2667
2668 /**
2669  * Convert a flow director filter to a generic flow.
2670  *
2671  * @param dev
2672  *   Pointer to Ethernet device.
2673  * @param fdir_filter
2674  *   Flow director filter to add.
2675  * @param attributes
2676  *   Generic flow parameters structure.
2677  *
2678  * @return
2679  *   0 on success, a negative errno value otherwise and rte_errno is set.
2680  */
2681 static int
2682 mlx5_fdir_filter_convert(struct rte_eth_dev *dev,
2683                          const struct rte_eth_fdir_filter *fdir_filter,
2684                          struct mlx5_fdir *attributes)
2685 {
2686         struct priv *priv = dev->data->dev_private;
2687         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2688         const struct rte_eth_fdir_masks *mask =
2689                 &dev->data->dev_conf.fdir_conf.mask;
2690
2691         /* Validate queue number. */
2692         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2693                 DRV_LOG(ERR, "port %u invalid queue number %d",
2694                         dev->data->port_id, fdir_filter->action.rx_queue);
2695                 rte_errno = EINVAL;
2696                 return -rte_errno;
2697         }
2698         attributes->attr.ingress = 1;
2699         attributes->items[0] = (struct rte_flow_item) {
2700                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2701                 .spec = &attributes->l2,
2702                 .mask = &attributes->l2_mask,
2703         };
2704         switch (fdir_filter->action.behavior) {
2705         case RTE_ETH_FDIR_ACCEPT:
2706                 attributes->actions[0] = (struct rte_flow_action){
2707                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2708                         .conf = &attributes->queue,
2709                 };
2710                 break;
2711         case RTE_ETH_FDIR_REJECT:
2712                 attributes->actions[0] = (struct rte_flow_action){
2713                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2714                 };
2715                 break;
2716         default:
2717                 DRV_LOG(ERR, "port %u invalid behavior %d",
2718                         dev->data->port_id,
2719                         fdir_filter->action.behavior);
2720                 rte_errno = ENOTSUP;
2721                 return -rte_errno;
2722         }
2723         attributes->queue.index = fdir_filter->action.rx_queue;
2724         /* Handle L3. */
2725         switch (fdir_filter->input.flow_type) {
2726         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2727         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2728         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2729                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2730                         .src_addr = input->flow.ip4_flow.src_ip,
2731                         .dst_addr = input->flow.ip4_flow.dst_ip,
2732                         .time_to_live = input->flow.ip4_flow.ttl,
2733                         .type_of_service = input->flow.ip4_flow.tos,
2734                         .next_proto_id = input->flow.ip4_flow.proto,
2735                 };
2736                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
2737                         .src_addr = mask->ipv4_mask.src_ip,
2738                         .dst_addr = mask->ipv4_mask.dst_ip,
2739                         .time_to_live = mask->ipv4_mask.ttl,
2740                         .type_of_service = mask->ipv4_mask.tos,
2741                         .next_proto_id = mask->ipv4_mask.proto,
2742                 };
2743                 attributes->items[1] = (struct rte_flow_item){
2744                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2745                         .spec = &attributes->l3,
2746                         .mask = &attributes->l3_mask,
2747                 };
2748                 break;
2749         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2750         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2751         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2752                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2753                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2754                         .proto = input->flow.ipv6_flow.proto,
2755                 };
2756
2757                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2758                        input->flow.ipv6_flow.src_ip,
2759                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2760                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2761                        input->flow.ipv6_flow.dst_ip,
2762                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2763                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2764                        mask->ipv6_mask.src_ip,
2765                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2766                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2767                        mask->ipv6_mask.dst_ip,
2768                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2769                 attributes->items[1] = (struct rte_flow_item){
2770                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2771                         .spec = &attributes->l3,
2772                         .mask = &attributes->l3_mask,
2773                 };
2774                 break;
2775         default:
2776                 DRV_LOG(ERR, "port %u invalid flow type%d",
2777                         dev->data->port_id, fdir_filter->input.flow_type);
2778                 rte_errno = ENOTSUP;
2779                 return -rte_errno;
2780         }
2781         /* Handle L4. */
2782         switch (fdir_filter->input.flow_type) {
2783         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2784                 attributes->l4.udp.hdr = (struct udp_hdr){
2785                         .src_port = input->flow.udp4_flow.src_port,
2786                         .dst_port = input->flow.udp4_flow.dst_port,
2787                 };
2788                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2789                         .src_port = mask->src_port_mask,
2790                         .dst_port = mask->dst_port_mask,
2791                 };
2792                 attributes->items[2] = (struct rte_flow_item){
2793                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2794                         .spec = &attributes->l4,
2795                         .mask = &attributes->l4_mask,
2796                 };
2797                 break;
2798         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2799                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2800                         .src_port = input->flow.tcp4_flow.src_port,
2801                         .dst_port = input->flow.tcp4_flow.dst_port,
2802                 };
2803                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2804                         .src_port = mask->src_port_mask,
2805                         .dst_port = mask->dst_port_mask,
2806                 };
2807                 attributes->items[2] = (struct rte_flow_item){
2808                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2809                         .spec = &attributes->l4,
2810                         .mask = &attributes->l4_mask,
2811                 };
2812                 break;
2813         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2814                 attributes->l4.udp.hdr = (struct udp_hdr){
2815                         .src_port = input->flow.udp6_flow.src_port,
2816                         .dst_port = input->flow.udp6_flow.dst_port,
2817                 };
2818                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2819                         .src_port = mask->src_port_mask,
2820                         .dst_port = mask->dst_port_mask,
2821                 };
2822                 attributes->items[2] = (struct rte_flow_item){
2823                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2824                         .spec = &attributes->l4,
2825                         .mask = &attributes->l4_mask,
2826                 };
2827                 break;
2828         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2829                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2830                         .src_port = input->flow.tcp6_flow.src_port,
2831                         .dst_port = input->flow.tcp6_flow.dst_port,
2832                 };
2833                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2834                         .src_port = mask->src_port_mask,
2835                         .dst_port = mask->dst_port_mask,
2836                 };
2837                 attributes->items[2] = (struct rte_flow_item){
2838                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2839                         .spec = &attributes->l4,
2840                         .mask = &attributes->l4_mask,
2841                 };
2842                 break;
2843         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2844         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2845                 break;
2846         default:
2847                 DRV_LOG(ERR, "port %u invalid flow type%d",
2848                         dev->data->port_id, fdir_filter->input.flow_type);
2849                 rte_errno = ENOTSUP;
2850                 return -rte_errno;
2851         }
2852         return 0;
2853 }
2854
2855 /**
2856  * Add new flow director filter and store it in list.
2857  *
2858  * @param dev
2859  *   Pointer to Ethernet device.
2860  * @param fdir_filter
2861  *   Flow director filter to add.
2862  *
2863  * @return
2864  *   0 on success, a negative errno value otherwise and rte_errno is set.
2865  */
2866 static int
2867 mlx5_fdir_filter_add(struct rte_eth_dev *dev,
2868                      const struct rte_eth_fdir_filter *fdir_filter)
2869 {
2870         struct priv *priv = dev->data->dev_private;
2871         struct mlx5_fdir attributes = {
2872                 .attr.group = 0,
2873                 .l2_mask = {
2874                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2875                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2876                         .type = 0,
2877                 },
2878         };
2879         struct mlx5_flow_parse parser = {
2880                 .layer = HASH_RXQ_ETH,
2881         };
2882         struct rte_flow_error error;
2883         struct rte_flow *flow;
2884         int ret;
2885
2886         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
2887         if (ret)
2888                 return ret;
2889         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
2890                                 attributes.actions, &error, &parser);
2891         if (ret)
2892                 return ret;
2893         flow = mlx5_flow_list_create(dev, &priv->flows, &attributes.attr,
2894                                      attributes.items, attributes.actions,
2895                                      &error);
2896         if (flow) {
2897                 DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id,
2898                         (void *)flow);
2899                 return 0;
2900         }
2901         return -rte_errno;
2902 }
2903
2904 /**
2905  * Delete specific filter.
2906  *
2907  * @param dev
2908  *   Pointer to Ethernet device.
2909  * @param fdir_filter
2910  *   Filter to be deleted.
2911  *
2912  * @return
2913  *   0 on success, a negative errno value otherwise and rte_errno is set.
2914  */
2915 static int
2916 mlx5_fdir_filter_delete(struct rte_eth_dev *dev,
2917                         const struct rte_eth_fdir_filter *fdir_filter)
2918 {
2919         struct priv *priv = dev->data->dev_private;
2920         struct mlx5_fdir attributes = {
2921                 .attr.group = 0,
2922         };
2923         struct mlx5_flow_parse parser = {
2924                 .create = 1,
2925                 .layer = HASH_RXQ_ETH,
2926         };
2927         struct rte_flow_error error;
2928         struct rte_flow *flow;
2929         unsigned int i;
2930         int ret;
2931
2932         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
2933         if (ret)
2934                 return ret;
2935         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
2936                                 attributes.actions, &error, &parser);
2937         if (ret)
2938                 goto exit;
2939         /*
2940          * Special case for drop action which is only set in the
2941          * specifications when the flow is created.  In this situation the
2942          * drop specification is missing.
2943          */
2944         if (parser.drop) {
2945                 struct ibv_flow_spec_action_drop *drop;
2946
2947                 drop = (void *)((uintptr_t)parser.queue[HASH_RXQ_ETH].ibv_attr +
2948                                 parser.queue[HASH_RXQ_ETH].offset);
2949                 *drop = (struct ibv_flow_spec_action_drop){
2950                         .type = IBV_FLOW_SPEC_ACTION_DROP,
2951                         .size = sizeof(struct ibv_flow_spec_action_drop),
2952                 };
2953                 parser.queue[HASH_RXQ_ETH].ibv_attr->num_of_specs++;
2954         }
2955         TAILQ_FOREACH(flow, &priv->flows, next) {
2956                 struct ibv_flow_attr *attr;
2957                 struct ibv_spec_header *attr_h;
2958                 void *spec;
2959                 struct ibv_flow_attr *flow_attr;
2960                 struct ibv_spec_header *flow_h;
2961                 void *flow_spec;
2962                 unsigned int specs_n;
2963
2964                 attr = parser.queue[HASH_RXQ_ETH].ibv_attr;
2965                 flow_attr = flow->frxq[HASH_RXQ_ETH].ibv_attr;
2966                 /* Compare first the attributes. */
2967                 if (memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
2968                         continue;
2969                 if (attr->num_of_specs == 0)
2970                         continue;
2971                 spec = (void *)((uintptr_t)attr +
2972                                 sizeof(struct ibv_flow_attr));
2973                 flow_spec = (void *)((uintptr_t)flow_attr +
2974                                      sizeof(struct ibv_flow_attr));
2975                 specs_n = RTE_MIN(attr->num_of_specs, flow_attr->num_of_specs);
2976                 for (i = 0; i != specs_n; ++i) {
2977                         attr_h = spec;
2978                         flow_h = flow_spec;
2979                         if (memcmp(spec, flow_spec,
2980                                    RTE_MIN(attr_h->size, flow_h->size)))
2981                                 goto wrong_flow;
2982                         spec = (void *)((uintptr_t)spec + attr_h->size);
2983                         flow_spec = (void *)((uintptr_t)flow_spec +
2984                                              flow_h->size);
2985                 }
2986                 /* At this point, the flow match. */
2987                 break;
2988 wrong_flow:
2989                 /* The flow does not match. */
2990                 continue;
2991         }
2992         ret = rte_errno; /* Save rte_errno before cleanup. */
2993         if (flow)
2994                 mlx5_flow_list_destroy(dev, &priv->flows, flow);
2995 exit:
2996         for (i = 0; i != hash_rxq_init_n; ++i) {
2997                 if (parser.queue[i].ibv_attr)
2998                         rte_free(parser.queue[i].ibv_attr);
2999         }
3000         rte_errno = ret; /* Restore rte_errno. */
3001         return -rte_errno;
3002 }
3003
3004 /**
3005  * Update queue for specific filter.
3006  *
3007  * @param dev
3008  *   Pointer to Ethernet device.
3009  * @param fdir_filter
3010  *   Filter to be updated.
3011  *
3012  * @return
3013  *   0 on success, a negative errno value otherwise and rte_errno is set.
3014  */
3015 static int
3016 mlx5_fdir_filter_update(struct rte_eth_dev *dev,
3017                         const struct rte_eth_fdir_filter *fdir_filter)
3018 {
3019         int ret;
3020
3021         ret = mlx5_fdir_filter_delete(dev, fdir_filter);
3022         if (ret)
3023                 return ret;
3024         return mlx5_fdir_filter_add(dev, fdir_filter);
3025 }
3026
3027 /**
3028  * Flush all filters.
3029  *
3030  * @param dev
3031  *   Pointer to Ethernet device.
3032  */
3033 static void
3034 mlx5_fdir_filter_flush(struct rte_eth_dev *dev)
3035 {
3036         struct priv *priv = dev->data->dev_private;
3037
3038         mlx5_flow_list_flush(dev, &priv->flows);
3039 }
3040
3041 /**
3042  * Get flow director information.
3043  *
3044  * @param dev
3045  *   Pointer to Ethernet device.
3046  * @param[out] fdir_info
3047  *   Resulting flow director information.
3048  */
3049 static void
3050 mlx5_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
3051 {
3052         struct priv *priv = dev->data->dev_private;
3053         struct rte_eth_fdir_masks *mask =
3054                 &priv->dev->data->dev_conf.fdir_conf.mask;
3055
3056         fdir_info->mode = priv->dev->data->dev_conf.fdir_conf.mode;
3057         fdir_info->guarant_spc = 0;
3058         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
3059         fdir_info->max_flexpayload = 0;
3060         fdir_info->flow_types_mask[0] = 0;
3061         fdir_info->flex_payload_unit = 0;
3062         fdir_info->max_flex_payload_segment_num = 0;
3063         fdir_info->flex_payload_limit = 0;
3064         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
3065 }
3066
3067 /**
3068  * Deal with flow director operations.
3069  *
3070  * @param dev
3071  *   Pointer to Ethernet device.
3072  * @param filter_op
3073  *   Operation to perform.
3074  * @param arg
3075  *   Pointer to operation-specific structure.
3076  *
3077  * @return
3078  *   0 on success, a negative errno value otherwise and rte_errno is set.
3079  */
3080 static int
3081 mlx5_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
3082                     void *arg)
3083 {
3084         struct priv *priv = dev->data->dev_private;
3085         enum rte_fdir_mode fdir_mode =
3086                 priv->dev->data->dev_conf.fdir_conf.mode;
3087
3088         if (filter_op == RTE_ETH_FILTER_NOP)
3089                 return 0;
3090         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
3091             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
3092                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
3093                         dev->data->port_id, fdir_mode);
3094                 rte_errno = EINVAL;
3095                 return -rte_errno;
3096         }
3097         switch (filter_op) {
3098         case RTE_ETH_FILTER_ADD:
3099                 return mlx5_fdir_filter_add(dev, arg);
3100         case RTE_ETH_FILTER_UPDATE:
3101                 return mlx5_fdir_filter_update(dev, arg);
3102         case RTE_ETH_FILTER_DELETE:
3103                 return mlx5_fdir_filter_delete(dev, arg);
3104         case RTE_ETH_FILTER_FLUSH:
3105                 mlx5_fdir_filter_flush(dev);
3106                 break;
3107         case RTE_ETH_FILTER_INFO:
3108                 mlx5_fdir_info_get(dev, arg);
3109                 break;
3110         default:
3111                 DRV_LOG(DEBUG, "port %u unknown operation %u",
3112                         dev->data->port_id, filter_op);
3113                 rte_errno = EINVAL;
3114                 return -rte_errno;
3115         }
3116         return 0;
3117 }
3118
3119 /**
3120  * Manage filter operations.
3121  *
3122  * @param dev
3123  *   Pointer to Ethernet device structure.
3124  * @param filter_type
3125  *   Filter type.
3126  * @param filter_op
3127  *   Operation to perform.
3128  * @param arg
3129  *   Pointer to operation-specific structure.
3130  *
3131  * @return
3132  *   0 on success, a negative errno value otherwise and rte_errno is set.
3133  */
3134 int
3135 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
3136                      enum rte_filter_type filter_type,
3137                      enum rte_filter_op filter_op,
3138                      void *arg)
3139 {
3140         switch (filter_type) {
3141         case RTE_ETH_FILTER_GENERIC:
3142                 if (filter_op != RTE_ETH_FILTER_GET) {
3143                         rte_errno = EINVAL;
3144                         return -rte_errno;
3145                 }
3146                 *(const void **)arg = &mlx5_flow_ops;
3147                 return 0;
3148         case RTE_ETH_FILTER_FDIR:
3149                 return mlx5_fdir_ctrl_func(dev, filter_op, arg);
3150         default:
3151                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
3152                         dev->data->port_id, filter_type);
3153                 rte_errno = ENOTSUP;
3154                 return -rte_errno;
3155         }
3156         return 0;
3157 }