drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox.
   4  */
   5
   6 #include <sys/queue.h>
   7 #include <string.h>
   8
   9 /* Verbs header. */
  10 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  11 #ifdef PEDANTIC
  12 #pragma GCC diagnostic ignored "-Wpedantic"
  13 #endif
  14 #include <infiniband/verbs.h>
  15 #ifdef PEDANTIC
  16 #pragma GCC diagnostic error "-Wpedantic"
  17 #endif
  18
  19 #include <rte_ethdev_driver.h>
  20 #include <rte_flow.h>
  21 #include <rte_flow_driver.h>
  22 #include <rte_malloc.h>
  23 #include <rte_ip.h>
  24
  25 #include "mlx5.h"
  26 #include "mlx5_defs.h"
  27 #include "mlx5_prm.h"
  28 #include "mlx5_glue.h"
  29
  30 /* Define minimal priority for control plane flows. */
  31 #define MLX5_CTRL_FLOW_PRIORITY 4
  32
  33 /* Internet Protocol versions. */
  34 #define MLX5_IPV4 4
  35 #define MLX5_IPV6 6
  36
  37 #ifndef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
  38 struct ibv_flow_spec_counter_action {
  39         int dummy;
  40 };
  41 #endif
  42
  43 /* Dev ops structure defined in mlx5.c */
  44 extern const struct eth_dev_ops mlx5_dev_ops;
  45 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  46
  47 static int
  48 mlx5_flow_create_eth(const struct rte_flow_item *item,
  49                      const void *default_mask,
  50                      void *data);
  51
  52 static int
  53 mlx5_flow_create_vlan(const struct rte_flow_item *item,
  54                       const void *default_mask,
  55                       void *data);
  56
  57 static int
  58 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
  59                       const void *default_mask,
  60                       void *data);
  61
  62 static int
  63 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
  64                       const void *default_mask,
  65                       void *data);
  66
  67 static int
  68 mlx5_flow_create_udp(const struct rte_flow_item *item,
  69                      const void *default_mask,
  70                      void *data);
  71
  72 static int
  73 mlx5_flow_create_tcp(const struct rte_flow_item *item,
  74                      const void *default_mask,
  75                      void *data);
  76
  77 static int
  78 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
  79                        const void *default_mask,
  80                        void *data);
  81
  82 struct mlx5_flow_parse;
  83
  84 static void
  85 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
  86                       unsigned int size);
  87
  88 static int
  89 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id);
  90
  91 static int
  92 mlx5_flow_create_count(struct rte_eth_dev *dev, struct mlx5_flow_parse *parser);
  93
  94 /* Hash RX queue types. */
  95 enum hash_rxq_type {
  96         HASH_RXQ_TCPV4,
  97         HASH_RXQ_UDPV4,
  98         HASH_RXQ_IPV4,
  99         HASH_RXQ_TCPV6,
 100         HASH_RXQ_UDPV6,
 101         HASH_RXQ_IPV6,
 102         HASH_RXQ_ETH,
 103 };
 104
 105 /* Initialization data for hash RX queue. */
 106 struct hash_rxq_init {
 107         uint64_t hash_fields; /* Fields that participate in the hash. */
 108         uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */
 109         unsigned int flow_priority; /* Flow priority to use. */
 110         unsigned int ip_version; /* Internet protocol. */
 111 };
 112
 113 /* Initialization data for hash RX queues. */
 114 const struct hash_rxq_init hash_rxq_init[] = {
 115         [HASH_RXQ_TCPV4] = {
 116                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 117                                 IBV_RX_HASH_DST_IPV4 |
 118                                 IBV_RX_HASH_SRC_PORT_TCP |
 119                                 IBV_RX_HASH_DST_PORT_TCP),
 120                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_TCP,
 121                 .flow_priority = 0,
 122                 .ip_version = MLX5_IPV4,
 123         },
 124         [HASH_RXQ_UDPV4] = {
 125                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 126                                 IBV_RX_HASH_DST_IPV4 |
 127                                 IBV_RX_HASH_SRC_PORT_UDP |
 128                                 IBV_RX_HASH_DST_PORT_UDP),
 129                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_UDP,
 130                 .flow_priority = 0,
 131                 .ip_version = MLX5_IPV4,
 132         },
 133         [HASH_RXQ_IPV4] = {
 134                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 135                                 IBV_RX_HASH_DST_IPV4),
 136                 .dpdk_rss_hf = (ETH_RSS_IPV4 |
 137                                 ETH_RSS_FRAG_IPV4),
 138                 .flow_priority = 1,
 139                 .ip_version = MLX5_IPV4,
 140         },
 141         [HASH_RXQ_TCPV6] = {
 142                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 143                                 IBV_RX_HASH_DST_IPV6 |
 144                                 IBV_RX_HASH_SRC_PORT_TCP |
 145                                 IBV_RX_HASH_DST_PORT_TCP),
 146                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_TCP,
 147                 .flow_priority = 0,
 148                 .ip_version = MLX5_IPV6,
 149         },
 150         [HASH_RXQ_UDPV6] = {
 151                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 152                                 IBV_RX_HASH_DST_IPV6 |
 153                                 IBV_RX_HASH_SRC_PORT_UDP |
 154                                 IBV_RX_HASH_DST_PORT_UDP),
 155                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_UDP,
 156                 .flow_priority = 0,
 157                 .ip_version = MLX5_IPV6,
 158         },
 159         [HASH_RXQ_IPV6] = {
 160                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 161                                 IBV_RX_HASH_DST_IPV6),
 162                 .dpdk_rss_hf = (ETH_RSS_IPV6 |
 163                                 ETH_RSS_FRAG_IPV6),
 164                 .flow_priority = 1,
 165                 .ip_version = MLX5_IPV6,
 166         },
 167         [HASH_RXQ_ETH] = {
 168                 .hash_fields = 0,
 169                 .dpdk_rss_hf = 0,
 170                 .flow_priority = 2,
 171         },
 172 };
 173
 174 /* Number of entries in hash_rxq_init[]. */
 175 const unsigned int hash_rxq_init_n = RTE_DIM(hash_rxq_init);
 176
 177 /** Structure for holding counter stats. */
 178 struct mlx5_flow_counter_stats {
 179         uint64_t hits; /**< Number of packets matched by the rule. */
 180         uint64_t bytes; /**< Number of bytes matched by the rule. */
 181 };
 182
 183 /** Structure for Drop queue. */
 184 struct mlx5_hrxq_drop {
 185         struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
 186         struct ibv_qp *qp; /**< Verbs queue pair. */
 187         struct ibv_wq *wq; /**< Verbs work queue. */
 188         struct ibv_cq *cq; /**< Verbs completion queue. */
 189 };
 190
 191 /* Flows structures. */
 192 struct mlx5_flow {
 193         uint64_t hash_fields; /**< Fields that participate in the hash. */
 194         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 195         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 196         struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */
 197 };
 198
 199 /* Drop flows structures. */
 200 struct mlx5_flow_drop {
 201         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 202         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 203 };
 204
 205 struct rte_flow {
 206         TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
 207         uint32_t mark:1; /**< Set if the flow is marked. */
 208         uint32_t drop:1; /**< Drop queue. */
 209         uint16_t queues_n; /**< Number of entries in queue[]. */
 210         uint16_t (*queues)[]; /**< Queues indexes to use. */
 211         struct rte_eth_rss_conf rss_conf; /**< RSS configuration */
 212         uint8_t rss_key[40]; /**< copy of the RSS key. */
 213         struct ibv_counter_set *cs; /**< Holds the counters for the rule. */
 214         struct mlx5_flow_counter_stats counter_stats;/**<The counter stats. */
 215         struct mlx5_flow frxq[RTE_DIM(hash_rxq_init)];
 216         /**< Flow with Rx queue. */
 217 };
 218
 219 /** Static initializer for items. */
 220 #define ITEMS(...) \
 221         (const enum rte_flow_item_type []){ \
 222                 __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
 223         }
 224
 225 /** Structure to generate a simple graph of layers supported by the NIC. */
 226 struct mlx5_flow_items {
 227         /** List of possible actions for these items. */
 228         const enum rte_flow_action_type *const actions;
 229         /** Bit-masks corresponding to the possibilities for the item. */
 230         const void *mask;
 231         /**
 232          * Default bit-masks to use when item->mask is not provided. When
 233          * \default_mask is also NULL, the full supported bit-mask (\mask) is
 234          * used instead.
 235          */
 236         const void *default_mask;
 237         /** Bit-masks size in bytes. */
 238         const unsigned int mask_sz;
 239         /**
 240          * Conversion function from rte_flow to NIC specific flow.
 241          *
 242          * @param item
 243          *   rte_flow item to convert.
 244          * @param default_mask
 245          *   Default bit-masks to use when item->mask is not provided.
 246          * @param data
 247          *   Internal structure to store the conversion.
 248          *
 249          * @return
 250          *   0 on success, a negative errno value otherwise and rte_errno is
 251          *   set.
 252          */
 253         int (*convert)(const struct rte_flow_item *item,
 254                        const void *default_mask,
 255                        void *data);
 256         /** Size in bytes of the destination structure. */
 257         const unsigned int dst_sz;
 258         /** List of possible following items.  */
 259         const enum rte_flow_item_type *const items;
 260 };
 261
 262 /** Valid action for this PMD. */
 263 static const enum rte_flow_action_type valid_actions[] = {
 264         RTE_FLOW_ACTION_TYPE_DROP,
 265         RTE_FLOW_ACTION_TYPE_QUEUE,
 266         RTE_FLOW_ACTION_TYPE_MARK,
 267         RTE_FLOW_ACTION_TYPE_FLAG,
 268 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 269         RTE_FLOW_ACTION_TYPE_COUNT,
 270 #endif
 271         RTE_FLOW_ACTION_TYPE_END,
 272 };
 273
 274 /** Graph of supported items and associated actions. */
 275 static const struct mlx5_flow_items mlx5_flow_items[] = {
 276         [RTE_FLOW_ITEM_TYPE_END] = {
 277                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 278                                RTE_FLOW_ITEM_TYPE_VXLAN),
 279         },
 280         [RTE_FLOW_ITEM_TYPE_ETH] = {
 281                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN,
 282                                RTE_FLOW_ITEM_TYPE_IPV4,
 283                                RTE_FLOW_ITEM_TYPE_IPV6),
 284                 .actions = valid_actions,
 285                 .mask = &(const struct rte_flow_item_eth){
 286                         .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 287                         .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 288                         .type = -1,
 289                 },
 290                 .default_mask = &rte_flow_item_eth_mask,
 291                 .mask_sz = sizeof(struct rte_flow_item_eth),
 292                 .convert = mlx5_flow_create_eth,
 293                 .dst_sz = sizeof(struct ibv_flow_spec_eth),
 294         },
 295         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 296                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
 297                                RTE_FLOW_ITEM_TYPE_IPV6),
 298                 .actions = valid_actions,
 299                 .mask = &(const struct rte_flow_item_vlan){
 300                         .tci = -1,
 301                 },
 302                 .default_mask = &rte_flow_item_vlan_mask,
 303                 .mask_sz = sizeof(struct rte_flow_item_vlan),
 304                 .convert = mlx5_flow_create_vlan,
 305                 .dst_sz = 0,
 306         },
 307         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 308                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 309                                RTE_FLOW_ITEM_TYPE_TCP),
 310                 .actions = valid_actions,
 311                 .mask = &(const struct rte_flow_item_ipv4){
 312                         .hdr = {
 313                                 .src_addr = -1,
 314                                 .dst_addr = -1,
 315                                 .type_of_service = -1,
 316                                 .next_proto_id = -1,
 317                         },
 318                 },
 319                 .default_mask = &rte_flow_item_ipv4_mask,
 320                 .mask_sz = sizeof(struct rte_flow_item_ipv4),
 321                 .convert = mlx5_flow_create_ipv4,
 322                 .dst_sz = sizeof(struct ibv_flow_spec_ipv4_ext),
 323         },
 324         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 325                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 326                                RTE_FLOW_ITEM_TYPE_TCP),
 327                 .actions = valid_actions,
 328                 .mask = &(const struct rte_flow_item_ipv6){
 329                         .hdr = {
 330                                 .src_addr = {
 331                                         0xff, 0xff, 0xff, 0xff,
 332                                         0xff, 0xff, 0xff, 0xff,
 333                                         0xff, 0xff, 0xff, 0xff,
 334                                         0xff, 0xff, 0xff, 0xff,
 335                                 },
 336                                 .dst_addr = {
 337                                         0xff, 0xff, 0xff, 0xff,
 338                                         0xff, 0xff, 0xff, 0xff,
 339                                         0xff, 0xff, 0xff, 0xff,
 340                                         0xff, 0xff, 0xff, 0xff,
 341                                 },
 342                                 .vtc_flow = -1,
 343                                 .proto = -1,
 344                                 .hop_limits = -1,
 345                         },
 346                 },
 347                 .default_mask = &rte_flow_item_ipv6_mask,
 348                 .mask_sz = sizeof(struct rte_flow_item_ipv6),
 349                 .convert = mlx5_flow_create_ipv6,
 350                 .dst_sz = sizeof(struct ibv_flow_spec_ipv6),
 351         },
 352         [RTE_FLOW_ITEM_TYPE_UDP] = {
 353                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN),
 354                 .actions = valid_actions,
 355                 .mask = &(const struct rte_flow_item_udp){
 356                         .hdr = {
 357                                 .src_port = -1,
 358                                 .dst_port = -1,
 359                         },
 360                 },
 361                 .default_mask = &rte_flow_item_udp_mask,
 362                 .mask_sz = sizeof(struct rte_flow_item_udp),
 363                 .convert = mlx5_flow_create_udp,
 364                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 365         },
 366         [RTE_FLOW_ITEM_TYPE_TCP] = {
 367                 .actions = valid_actions,
 368                 .mask = &(const struct rte_flow_item_tcp){
 369                         .hdr = {
 370                                 .src_port = -1,
 371                                 .dst_port = -1,
 372                         },
 373                 },
 374                 .default_mask = &rte_flow_item_tcp_mask,
 375                 .mask_sz = sizeof(struct rte_flow_item_tcp),
 376                 .convert = mlx5_flow_create_tcp,
 377                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 378         },
 379         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 380                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
 381                 .actions = valid_actions,
 382                 .mask = &(const struct rte_flow_item_vxlan){
 383                         .vni = "\xff\xff\xff",
 384                 },
 385                 .default_mask = &rte_flow_item_vxlan_mask,
 386                 .mask_sz = sizeof(struct rte_flow_item_vxlan),
 387                 .convert = mlx5_flow_create_vxlan,
 388                 .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
 389         },
 390 };
 391
 392 /** Structure to pass to the conversion function. */
 393 struct mlx5_flow_parse {
 394         uint32_t inner; /**< Set once VXLAN is encountered. */
 395         uint32_t create:1;
 396         /**< Whether resources should remain after a validate. */
 397         uint32_t drop:1; /**< Target is a drop queue. */
 398         uint32_t mark:1; /**< Mark is present in the flow. */
 399         uint32_t count:1; /**< Count is present in the flow. */
 400         uint32_t mark_id; /**< Mark identifier. */
 401         uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */
 402         uint16_t queues_n; /**< Number of entries in queue[]. */
 403         struct rte_eth_rss_conf rss_conf; /**< RSS configuration */
 404         uint8_t rss_key[40]; /**< copy of the RSS key. */
 405         enum hash_rxq_type layer; /**< Last pattern layer detected. */
 406         struct ibv_counter_set *cs; /**< Holds the counter set for the rule */
 407         struct {
 408                 struct ibv_flow_attr *ibv_attr;
 409                 /**< Pointer to Verbs attributes. */
 410                 unsigned int offset;
 411                 /**< Current position or total size of the attribute. */
 412         } queue[RTE_DIM(hash_rxq_init)];
 413 };
 414
 415 static const struct rte_flow_ops mlx5_flow_ops = {
 416         .validate = mlx5_flow_validate,
 417         .create = mlx5_flow_create,
 418         .destroy = mlx5_flow_destroy,
 419         .flush = mlx5_flow_flush,
 420 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 421         .query = mlx5_flow_query,
 422 #else
 423         .query = NULL,
 424 #endif
 425         .isolate = mlx5_flow_isolate,
 426 };
 427
 428 /* Convert FDIR request to Generic flow. */
 429 struct mlx5_fdir {
 430         struct rte_flow_attr attr;
 431         struct rte_flow_action actions[2];
 432         struct rte_flow_item items[4];
 433         struct rte_flow_item_eth l2;
 434         struct rte_flow_item_eth l2_mask;
 435         union {
 436                 struct rte_flow_item_ipv4 ipv4;
 437                 struct rte_flow_item_ipv6 ipv6;
 438         } l3;
 439         union {
 440                 struct rte_flow_item_udp udp;
 441                 struct rte_flow_item_tcp tcp;
 442         } l4;
 443         struct rte_flow_action_queue queue;
 444 };
 445
 446 /* Verbs specification header. */
 447 struct ibv_spec_header {
 448         enum ibv_flow_spec_type type;
 449         uint16_t size;
 450 };
 451
 452 /**
 453  * Check support for a given item.
 454  *
 455  * @param item[in]
 456  *   Item specification.
 457  * @param mask[in]
 458  *   Bit-masks covering supported fields to compare with spec, last and mask in
 459  *   \item.
 460  * @param size
 461  *   Bit-Mask size in bytes.
 462  *
 463  * @return
 464  *   0 on success, a negative errno value otherwise and rte_errno is set.
 465  */
 466 static int
 467 mlx5_flow_item_validate(const struct rte_flow_item *item,
 468                         const uint8_t *mask, unsigned int size)
 469 {
 470         if (!item->spec && (item->mask || item->last)) {
 471                 rte_errno = EINVAL;
 472                 return -rte_errno;
 473         }
 474         if (item->spec && !item->mask) {
 475                 unsigned int i;
 476                 const uint8_t *spec = item->spec;
 477
 478                 for (i = 0; i < size; ++i)
 479                         if ((spec[i] | mask[i]) != mask[i]) {
 480                                 rte_errno = EINVAL;
 481                                 return -rte_errno;
 482                         }
 483         }
 484         if (item->last && !item->mask) {
 485                 unsigned int i;
 486                 const uint8_t *spec = item->last;
 487
 488                 for (i = 0; i < size; ++i)
 489                         if ((spec[i] | mask[i]) != mask[i]) {
 490                                 rte_errno = EINVAL;
 491                                 return -rte_errno;
 492                         }
 493         }
 494         if (item->mask) {
 495                 unsigned int i;
 496                 const uint8_t *spec = item->spec;
 497
 498                 for (i = 0; i < size; ++i)
 499                         if ((spec[i] | mask[i]) != mask[i]) {
 500                                 rte_errno = EINVAL;
 501                                 return -rte_errno;
 502                         }
 503         }
 504         if (item->spec && item->last) {
 505                 uint8_t spec[size];
 506                 uint8_t last[size];
 507                 const uint8_t *apply = mask;
 508                 unsigned int i;
 509                 int ret;
 510
 511                 if (item->mask)
 512                         apply = item->mask;
 513                 for (i = 0; i < size; ++i) {
 514                         spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
 515                         last[i] = ((const uint8_t *)item->last)[i] & apply[i];
 516                 }
 517                 ret = memcmp(spec, last, size);
 518                 if (ret != 0) {
 519                         rte_errno = EINVAL;
 520                         return -rte_errno;
 521                 }
 522         }
 523         return 0;
 524 }
 525
 526 /**
 527  * Copy the RSS configuration from the user ones, of the rss_conf is null,
 528  * uses the driver one.
 529  *
 530  * @param parser
 531  *   Internal parser structure.
 532  * @param rss_conf
 533  *   User RSS configuration to save.
 534  *
 535  * @return
 536  *   0 on success, a negative errno value otherwise and rte_errno is set.
 537  */
 538 static int
 539 mlx5_flow_convert_rss_conf(struct mlx5_flow_parse *parser,
 540                            const struct rte_eth_rss_conf *rss_conf)
 541 {
 542         /*
 543          * This function is also called at the beginning of
 544          * mlx5_flow_convert_actions() to initialize the parser with the
 545          * device default RSS configuration.
 546          */
 547         if (rss_conf) {
 548                 if (rss_conf->rss_hf & MLX5_RSS_HF_MASK) {
 549                         rte_errno = EINVAL;
 550                         return -rte_errno;
 551                 }
 552                 if (rss_conf->rss_key_len != 40) {
 553                         rte_errno = EINVAL;
 554                         return -rte_errno;
 555                 }
 556                 if (rss_conf->rss_key_len && rss_conf->rss_key) {
 557                         parser->rss_conf.rss_key_len = rss_conf->rss_key_len;
 558                         memcpy(parser->rss_key, rss_conf->rss_key,
 559                                rss_conf->rss_key_len);
 560                         parser->rss_conf.rss_key = parser->rss_key;
 561                 }
 562                 parser->rss_conf.rss_hf = rss_conf->rss_hf;
 563         }
 564         return 0;
 565 }
 566
 567 /**
 568  * Extract attribute to the parser.
 569  *
 570  * @param[in] attr
 571  *   Flow rule attributes.
 572  * @param[out] error
 573  *   Perform verbose error reporting if not NULL.
 574  *
 575  * @return
 576  *   0 on success, a negative errno value otherwise and rte_errno is set.
 577  */
 578 static int
 579 mlx5_flow_convert_attributes(const struct rte_flow_attr *attr,
 580                              struct rte_flow_error *error)
 581 {
 582         if (attr->group) {
 583                 rte_flow_error_set(error, ENOTSUP,
 584                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 585                                    NULL,
 586                                    "groups are not supported");
 587                 return -rte_errno;
 588         }
 589         if (attr->priority && attr->priority != MLX5_CTRL_FLOW_PRIORITY) {
 590                 rte_flow_error_set(error, ENOTSUP,
 591                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 592                                    NULL,
 593                                    "priorities are not supported");
 594                 return -rte_errno;
 595         }
 596         if (attr->egress) {
 597                 rte_flow_error_set(error, ENOTSUP,
 598                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 599                                    NULL,
 600                                    "egress is not supported");
 601                 return -rte_errno;
 602         }
 603         if (!attr->ingress) {
 604                 rte_flow_error_set(error, ENOTSUP,
 605                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 606                                    NULL,
 607                                    "only ingress is supported");
 608                 return -rte_errno;
 609         }
 610         return 0;
 611 }
 612
 613 /**
 614  * Extract actions request to the parser.
 615  *
 616  * @param dev
 617  *   Pointer to Ethernet device.
 618  * @param[in] actions
 619  *   Associated actions (list terminated by the END action).
 620  * @param[out] error
 621  *   Perform verbose error reporting if not NULL.
 622  * @param[in, out] parser
 623  *   Internal parser structure.
 624  *
 625  * @return
 626  *   0 on success, a negative errno value otherwise and rte_errno is set.
 627  */
 628 static int
 629 mlx5_flow_convert_actions(struct rte_eth_dev *dev,
 630                           const struct rte_flow_action actions[],
 631                           struct rte_flow_error *error,
 632                           struct mlx5_flow_parse *parser)
 633 {
 634         struct priv *priv = dev->data->dev_private;
 635         int ret;
 636
 637         /*
 638          * Add default RSS configuration necessary for Verbs to create QP even
 639          * if no RSS is necessary.
 640          */
 641         ret = mlx5_flow_convert_rss_conf(parser,
 642                                          (const struct rte_eth_rss_conf *)
 643                                          &priv->rss_conf);
 644         if (ret)
 645                 return ret;
 646         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
 647                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
 648                         continue;
 649                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
 650                         parser->drop = 1;
 651                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
 652                         const struct rte_flow_action_queue *queue =
 653                                 (const struct rte_flow_action_queue *)
 654                                 actions->conf;
 655                         uint16_t n;
 656                         uint16_t found = 0;
 657
 658                         if (!queue || (queue->index > (priv->rxqs_n - 1)))
 659                                 goto exit_action_not_supported;
 660                         for (n = 0; n < parser->queues_n; ++n) {
 661                                 if (parser->queues[n] == queue->index) {
 662                                         found = 1;
 663                                         break;
 664                                 }
 665                         }
 666                         if (parser->queues_n > 1 && !found) {
 667                                 rte_flow_error_set(error, ENOTSUP,
 668                                            RTE_FLOW_ERROR_TYPE_ACTION,
 669                                            actions,
 670                                            "queue action not in RSS queues");
 671                                 return -rte_errno;
 672                         }
 673                         if (!found) {
 674                                 parser->queues_n = 1;
 675                                 parser->queues[0] = queue->index;
 676                         }
 677                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) {
 678                         const struct rte_flow_action_rss *rss =
 679                                 (const struct rte_flow_action_rss *)
 680                                 actions->conf;
 681                         uint16_t n;
 682
 683                         if (!rss || !rss->num) {
 684                                 rte_flow_error_set(error, EINVAL,
 685                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 686                                                    actions,
 687                                                    "no valid queues");
 688                                 return -rte_errno;
 689                         }
 690                         if (parser->queues_n == 1) {
 691                                 uint16_t found = 0;
 692
 693                                 assert(parser->queues_n);
 694                                 for (n = 0; n < rss->num; ++n) {
 695                                         if (parser->queues[0] ==
 696                                             rss->queue[n]) {
 697                                                 found = 1;
 698                                                 break;
 699                                         }
 700                                 }
 701                                 if (!found) {
 702                                         rte_flow_error_set(error, ENOTSUP,
 703                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 704                                                    actions,
 705                                                    "queue action not in RSS"
 706                                                    " queues");
 707                                         return -rte_errno;
 708                                 }
 709                         }
 710                         for (n = 0; n < rss->num; ++n) {
 711                                 if (rss->queue[n] >= priv->rxqs_n) {
 712                                         rte_flow_error_set(error, EINVAL,
 713                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 714                                                    actions,
 715                                                    "queue id > number of"
 716                                                    " queues");
 717                                         return -rte_errno;
 718                                 }
 719                         }
 720                         for (n = 0; n < rss->num; ++n)
 721                                 parser->queues[n] = rss->queue[n];
 722                         parser->queues_n = rss->num;
 723                         if (mlx5_flow_convert_rss_conf(parser, rss->rss_conf)) {
 724                                 rte_flow_error_set(error, EINVAL,
 725                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 726                                                    actions,
 727                                                    "wrong RSS configuration");
 728                                 return -rte_errno;
 729                         }
 730                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
 731                         const struct rte_flow_action_mark *mark =
 732                                 (const struct rte_flow_action_mark *)
 733                                 actions->conf;
 734
 735                         if (!mark) {
 736                                 rte_flow_error_set(error, EINVAL,
 737                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 738                                                    actions,
 739                                                    "mark must be defined");
 740                                 return -rte_errno;
 741                         } else if (mark->id >= MLX5_FLOW_MARK_MAX) {
 742                                 rte_flow_error_set(error, ENOTSUP,
 743                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 744                                                    actions,
 745                                                    "mark must be between 0"
 746                                                    " and 16777199");
 747                                 return -rte_errno;
 748                         }
 749                         parser->mark = 1;
 750                         parser->mark_id = mark->id;
 751                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) {
 752                         parser->mark = 1;
 753                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT &&
 754                            priv->config.flow_counter_en) {
 755                         parser->count = 1;
 756                 } else {
 757                         goto exit_action_not_supported;
 758                 }
 759         }
 760         if (parser->drop && parser->mark)
 761                 parser->mark = 0;
 762         if (!parser->queues_n && !parser->drop) {
 763                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
 764                                    NULL, "no valid action");
 765                 return -rte_errno;
 766         }
 767         return 0;
 768 exit_action_not_supported:
 769         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 770                            actions, "action not supported");
 771         return -rte_errno;
 772 }
 773
 774 /**
 775  * Validate items.
 776  *
 777  * @param[in] items
 778  *   Pattern specification (list terminated by the END pattern item).
 779  * @param[out] error
 780  *   Perform verbose error reporting if not NULL.
 781  * @param[in, out] parser
 782  *   Internal parser structure.
 783  *
 784  * @return
 785  *   0 on success, a negative errno value otherwise and rte_errno is set.
 786  */
 787 static int
 788 mlx5_flow_convert_items_validate(const struct rte_flow_item items[],
 789                                  struct rte_flow_error *error,
 790                                  struct mlx5_flow_parse *parser)
 791 {
 792         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 793         unsigned int i;
 794         int ret = 0;
 795
 796         /* Initialise the offsets to start after verbs attribute. */
 797         for (i = 0; i != hash_rxq_init_n; ++i)
 798                 parser->queue[i].offset = sizeof(struct ibv_flow_attr);
 799         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
 800                 const struct mlx5_flow_items *token = NULL;
 801                 unsigned int n;
 802
 803                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
 804                         continue;
 805                 for (i = 0;
 806                      cur_item->items &&
 807                      cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
 808                      ++i) {
 809                         if (cur_item->items[i] == items->type) {
 810                                 token = &mlx5_flow_items[items->type];
 811                                 break;
 812                         }
 813                 }
 814                 if (!token)
 815                         goto exit_item_not_supported;
 816                 cur_item = token;
 817                 ret = mlx5_flow_item_validate(items,
 818                                               (const uint8_t *)cur_item->mask,
 819                                               cur_item->mask_sz);
 820                 if (ret)
 821                         goto exit_item_not_supported;
 822                 if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
 823                         if (parser->inner) {
 824                                 rte_flow_error_set(error, ENOTSUP,
 825                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 826                                                    items,
 827                                                    "cannot recognize multiple"
 828                                                    " VXLAN encapsulations");
 829                                 return -rte_errno;
 830                         }
 831                         parser->inner = IBV_FLOW_SPEC_INNER;
 832                 }
 833                 if (parser->drop) {
 834                         parser->queue[HASH_RXQ_ETH].offset += cur_item->dst_sz;
 835                 } else {
 836                         for (n = 0; n != hash_rxq_init_n; ++n)
 837                                 parser->queue[n].offset += cur_item->dst_sz;
 838                 }
 839         }
 840         if (parser->drop) {
 841                 parser->queue[HASH_RXQ_ETH].offset +=
 842                         sizeof(struct ibv_flow_spec_action_drop);
 843         }
 844         if (parser->mark) {
 845                 for (i = 0; i != hash_rxq_init_n; ++i)
 846                         parser->queue[i].offset +=
 847                                 sizeof(struct ibv_flow_spec_action_tag);
 848         }
 849         if (parser->count) {
 850                 unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
 851
 852                 for (i = 0; i != hash_rxq_init_n; ++i)
 853                         parser->queue[i].offset += size;
 854         }
 855         return 0;
 856 exit_item_not_supported:
 857         return rte_flow_error_set(error, -ret, RTE_FLOW_ERROR_TYPE_ITEM,
 858                                   items, "item not supported");
 859 }
 860
 861 /**
 862  * Allocate memory space to store verbs flow attributes.
 863  *
 864  * @param[in] priority
 865  *   Flow priority.
 866  * @param[in] size
 867  *   Amount of byte to allocate.
 868  * @param[out] error
 869  *   Perform verbose error reporting if not NULL.
 870  *
 871  * @return
 872  *   A verbs flow attribute on success, NULL otherwise and rte_errno is set.
 873  */
 874 static struct ibv_flow_attr *
 875 mlx5_flow_convert_allocate(unsigned int priority,
 876                            unsigned int size,
 877                            struct rte_flow_error *error)
 878 {
 879         struct ibv_flow_attr *ibv_attr;
 880
 881         ibv_attr = rte_calloc(__func__, 1, size, 0);
 882         if (!ibv_attr) {
 883                 rte_flow_error_set(error, ENOMEM,
 884                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 885                                    NULL,
 886                                    "cannot allocate verbs spec attributes");
 887                 return NULL;
 888         }
 889         ibv_attr->priority = priority;
 890         return ibv_attr;
 891 }
 892
 893 /**
 894  * Finalise verbs flow attributes.
 895  *
 896  * @param[in, out] parser
 897  *   Internal parser structure.
 898  */
 899 static void
 900 mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
 901 {
 902         const unsigned int ipv4 =
 903                 hash_rxq_init[parser->layer].ip_version == MLX5_IPV4;
 904         const enum hash_rxq_type hmin = ipv4 ? HASH_RXQ_TCPV4 : HASH_RXQ_TCPV6;
 905         const enum hash_rxq_type hmax = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 906         const enum hash_rxq_type ohmin = ipv4 ? HASH_RXQ_TCPV6 : HASH_RXQ_TCPV4;
 907         const enum hash_rxq_type ohmax = ipv4 ? HASH_RXQ_IPV6 : HASH_RXQ_IPV4;
 908         const enum hash_rxq_type ip = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 909         unsigned int i;
 910
 911         /* Remove any other flow not matching the pattern. */
 912         if (parser->queues_n == 1) {
 913                 for (i = 0; i != hash_rxq_init_n; ++i) {
 914                         if (i == HASH_RXQ_ETH)
 915                                 continue;
 916                         rte_free(parser->queue[i].ibv_attr);
 917                         parser->queue[i].ibv_attr = NULL;
 918                 }
 919                 return;
 920         }
 921         if (parser->layer == HASH_RXQ_ETH) {
 922                 goto fill;
 923         } else {
 924                 /*
 925                  * This layer becomes useless as the pattern define under
 926                  * layers.
 927                  */
 928                 rte_free(parser->queue[HASH_RXQ_ETH].ibv_attr);
 929                 parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
 930         }
 931         /* Remove opposite kind of layer e.g. IPv6 if the pattern is IPv4. */
 932         for (i = ohmin; i != (ohmax + 1); ++i) {
 933                 if (!parser->queue[i].ibv_attr)
 934                         continue;
 935                 rte_free(parser->queue[i].ibv_attr);
 936                 parser->queue[i].ibv_attr = NULL;
 937         }
 938         /* Remove impossible flow according to the RSS configuration. */
 939         if (hash_rxq_init[parser->layer].dpdk_rss_hf &
 940             parser->rss_conf.rss_hf) {
 941                 /* Remove any other flow. */
 942                 for (i = hmin; i != (hmax + 1); ++i) {
 943                         if ((i == parser->layer) ||
 944                              (!parser->queue[i].ibv_attr))
 945                                 continue;
 946                         rte_free(parser->queue[i].ibv_attr);
 947                         parser->queue[i].ibv_attr = NULL;
 948                 }
 949         } else  if (!parser->queue[ip].ibv_attr) {
 950                 /* no RSS possible with the current configuration. */
 951                 parser->queues_n = 1;
 952                 return;
 953         }
 954 fill:
 955         /*
 956          * Fill missing layers in verbs specifications, or compute the correct
 957          * offset to allocate the memory space for the attributes and
 958          * specifications.
 959          */
 960         for (i = 0; i != hash_rxq_init_n - 1; ++i) {
 961                 union {
 962                         struct ibv_flow_spec_ipv4_ext ipv4;
 963                         struct ibv_flow_spec_ipv6 ipv6;
 964                         struct ibv_flow_spec_tcp_udp udp_tcp;
 965                 } specs;
 966                 void *dst;
 967                 uint16_t size;
 968
 969                 if (i == parser->layer)
 970                         continue;
 971                 if (parser->layer == HASH_RXQ_ETH) {
 972                         if (hash_rxq_init[i].ip_version == MLX5_IPV4) {
 973                                 size = sizeof(struct ibv_flow_spec_ipv4_ext);
 974                                 specs.ipv4 = (struct ibv_flow_spec_ipv4_ext){
 975                                         .type = IBV_FLOW_SPEC_IPV4_EXT,
 976                                         .size = size,
 977                                 };
 978                         } else {
 979                                 size = sizeof(struct ibv_flow_spec_ipv6);
 980                                 specs.ipv6 = (struct ibv_flow_spec_ipv6){
 981                                         .type = IBV_FLOW_SPEC_IPV6,
 982                                         .size = size,
 983                                 };
 984                         }
 985                         if (parser->queue[i].ibv_attr) {
 986                                 dst = (void *)((uintptr_t)
 987                                                parser->queue[i].ibv_attr +
 988                                                parser->queue[i].offset);
 989                                 memcpy(dst, &specs, size);
 990                                 ++parser->queue[i].ibv_attr->num_of_specs;
 991                         }
 992                         parser->queue[i].offset += size;
 993                 }
 994                 if ((i == HASH_RXQ_UDPV4) || (i == HASH_RXQ_TCPV4) ||
 995                     (i == HASH_RXQ_UDPV6) || (i == HASH_RXQ_TCPV6)) {
 996                         size = sizeof(struct ibv_flow_spec_tcp_udp);
 997                         specs.udp_tcp = (struct ibv_flow_spec_tcp_udp) {
 998                                 .type = ((i == HASH_RXQ_UDPV4 ||
 999                                           i == HASH_RXQ_UDPV6) ?
1000                                          IBV_FLOW_SPEC_UDP :
1001                                          IBV_FLOW_SPEC_TCP),
1002                                 .size = size,
1003                         };
1004                         if (parser->queue[i].ibv_attr) {
1005                                 dst = (void *)((uintptr_t)
1006                                                parser->queue[i].ibv_attr +
1007                                                parser->queue[i].offset);
1008                                 memcpy(dst, &specs, size);
1009                                 ++parser->queue[i].ibv_attr->num_of_specs;
1010                         }
1011                         parser->queue[i].offset += size;
1012                 }
1013         }
1014 }
1015
1016 /**
1017  * Validate and convert a flow supported by the NIC.
1018  *
1019  * @param dev
1020  *   Pointer to Ethernet device.
1021  * @param[in] attr
1022  *   Flow rule attributes.
1023  * @param[in] pattern
1024  *   Pattern specification (list terminated by the END pattern item).
1025  * @param[in] actions
1026  *   Associated actions (list terminated by the END action).
1027  * @param[out] error
1028  *   Perform verbose error reporting if not NULL.
1029  * @param[in, out] parser
1030  *   Internal parser structure.
1031  *
1032  * @return
1033  *   0 on success, a negative errno value otherwise and rte_errno is set.
1034  */
1035 static int
1036 mlx5_flow_convert(struct rte_eth_dev *dev,
1037                   const struct rte_flow_attr *attr,
1038                   const struct rte_flow_item items[],
1039                   const struct rte_flow_action actions[],
1040                   struct rte_flow_error *error,
1041                   struct mlx5_flow_parse *parser)
1042 {
1043         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
1044         unsigned int i;
1045         int ret;
1046
1047         /* First step. Validate the attributes, items and actions. */
1048         *parser = (struct mlx5_flow_parse){
1049                 .create = parser->create,
1050                 .layer = HASH_RXQ_ETH,
1051                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1052         };
1053         ret = mlx5_flow_convert_attributes(attr, error);
1054         if (ret)
1055                 return ret;
1056         ret = mlx5_flow_convert_actions(dev, actions, error, parser);
1057         if (ret)
1058                 return ret;
1059         ret = mlx5_flow_convert_items_validate(items, error, parser);
1060         if (ret)
1061                 return ret;
1062         mlx5_flow_convert_finalise(parser);
1063         /*
1064          * Second step.
1065          * Allocate the memory space to store verbs specifications.
1066          */
1067         if (parser->drop) {
1068                 unsigned int priority =
1069                         attr->priority +
1070                         hash_rxq_init[HASH_RXQ_ETH].flow_priority;
1071                 unsigned int offset = parser->queue[HASH_RXQ_ETH].offset;
1072
1073                 parser->queue[HASH_RXQ_ETH].ibv_attr =
1074                         mlx5_flow_convert_allocate(priority, offset, error);
1075                 if (!parser->queue[HASH_RXQ_ETH].ibv_attr)
1076                         goto exit_enomem;
1077                 parser->queue[HASH_RXQ_ETH].offset =
1078                         sizeof(struct ibv_flow_attr);
1079         } else {
1080                 for (i = 0; i != hash_rxq_init_n; ++i) {
1081                         unsigned int priority =
1082                                 attr->priority +
1083                                 hash_rxq_init[i].flow_priority;
1084                         unsigned int offset;
1085
1086                         if (!(parser->rss_conf.rss_hf &
1087                               hash_rxq_init[i].dpdk_rss_hf) &&
1088                             (i != HASH_RXQ_ETH))
1089                                 continue;
1090                         offset = parser->queue[i].offset;
1091                         parser->queue[i].ibv_attr =
1092                                 mlx5_flow_convert_allocate(priority,
1093                                                            offset, error);
1094                         if (!parser->queue[i].ibv_attr)
1095                                 goto exit_enomem;
1096                         parser->queue[i].offset = sizeof(struct ibv_flow_attr);
1097                 }
1098         }
1099         /* Third step. Conversion parse, fill the specifications. */
1100         parser->inner = 0;
1101         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
1102                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
1103                         continue;
1104                 cur_item = &mlx5_flow_items[items->type];
1105                 ret = cur_item->convert(items,
1106                                         (cur_item->default_mask ?
1107                                          cur_item->default_mask :
1108                                          cur_item->mask),
1109                                         parser);
1110                 if (ret) {
1111                         rte_flow_error_set(error, rte_errno,
1112                                            RTE_FLOW_ERROR_TYPE_ITEM,
1113                                            items, "item not supported");
1114                         goto exit_free;
1115                 }
1116         }
1117         if (parser->mark)
1118                 mlx5_flow_create_flag_mark(parser, parser->mark_id);
1119         if (parser->count && parser->create) {
1120                 mlx5_flow_create_count(dev, parser);
1121                 if (!parser->cs)
1122                         goto exit_count_error;
1123         }
1124         /*
1125          * Last step. Complete missing specification to reach the RSS
1126          * configuration.
1127          */
1128         if (!parser->drop) {
1129                 mlx5_flow_convert_finalise(parser);
1130         } else {
1131                 parser->queue[HASH_RXQ_ETH].ibv_attr->priority =
1132                         attr->priority +
1133                         hash_rxq_init[parser->layer].flow_priority;
1134         }
1135 exit_free:
1136         /* Only verification is expected, all resources should be released. */
1137         if (!parser->create) {
1138                 for (i = 0; i != hash_rxq_init_n; ++i) {
1139                         if (parser->queue[i].ibv_attr) {
1140                                 rte_free(parser->queue[i].ibv_attr);
1141                                 parser->queue[i].ibv_attr = NULL;
1142                         }
1143                 }
1144         }
1145         return ret;
1146 exit_enomem:
1147         for (i = 0; i != hash_rxq_init_n; ++i) {
1148                 if (parser->queue[i].ibv_attr) {
1149                         rte_free(parser->queue[i].ibv_attr);
1150                         parser->queue[i].ibv_attr = NULL;
1151                 }
1152         }
1153         rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1154                            NULL, "cannot allocate verbs spec attributes");
1155         return -rte_errno;
1156 exit_count_error:
1157         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1158                            NULL, "cannot create counter");
1159         return -rte_errno;
1160 }
1161
1162 /**
1163  * Copy the specification created into the flow.
1164  *
1165  * @param parser
1166  *   Internal parser structure.
1167  * @param src
1168  *   Create specification.
1169  * @param size
1170  *   Size in bytes of the specification to copy.
1171  */
1172 static void
1173 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
1174                       unsigned int size)
1175 {
1176         unsigned int i;
1177         void *dst;
1178
1179         for (i = 0; i != hash_rxq_init_n; ++i) {
1180                 if (!parser->queue[i].ibv_attr)
1181                         continue;
1182                 /* Specification must be the same l3 type or none. */
1183                 if (parser->layer == HASH_RXQ_ETH ||
1184                     (hash_rxq_init[parser->layer].ip_version ==
1185                      hash_rxq_init[i].ip_version) ||
1186                     (hash_rxq_init[i].ip_version == 0)) {
1187                         dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1188                                         parser->queue[i].offset);
1189                         memcpy(dst, src, size);
1190                         ++parser->queue[i].ibv_attr->num_of_specs;
1191                         parser->queue[i].offset += size;
1192                 }
1193         }
1194 }
1195
1196 /**
1197  * Convert Ethernet item to Verbs specification.
1198  *
1199  * @param item[in]
1200  *   Item specification.
1201  * @param default_mask[in]
1202  *   Default bit-masks to use when item->mask is not provided.
1203  * @param data[in, out]
1204  *   User structure.
1205  *
1206  * @return
1207  *   0 on success, a negative errno value otherwise and rte_errno is set.
1208  */
1209 static int
1210 mlx5_flow_create_eth(const struct rte_flow_item *item,
1211                      const void *default_mask,
1212                      void *data)
1213 {
1214         const struct rte_flow_item_eth *spec = item->spec;
1215         const struct rte_flow_item_eth *mask = item->mask;
1216         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1217         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1218         struct ibv_flow_spec_eth eth = {
1219                 .type = parser->inner | IBV_FLOW_SPEC_ETH,
1220                 .size = eth_size,
1221         };
1222
1223         /* Don't update layer for the inner pattern. */
1224         if (!parser->inner)
1225                 parser->layer = HASH_RXQ_ETH;
1226         if (spec) {
1227                 unsigned int i;
1228
1229                 if (!mask)
1230                         mask = default_mask;
1231                 memcpy(&eth.val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
1232                 memcpy(&eth.val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
1233                 eth.val.ether_type = spec->type;
1234                 memcpy(&eth.mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
1235                 memcpy(&eth.mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
1236                 eth.mask.ether_type = mask->type;
1237                 /* Remove unwanted bits from values. */
1238                 for (i = 0; i < ETHER_ADDR_LEN; ++i) {
1239                         eth.val.dst_mac[i] &= eth.mask.dst_mac[i];
1240                         eth.val.src_mac[i] &= eth.mask.src_mac[i];
1241                 }
1242                 eth.val.ether_type &= eth.mask.ether_type;
1243         }
1244         mlx5_flow_create_copy(parser, &eth, eth_size);
1245         return 0;
1246 }
1247
1248 /**
1249  * Convert VLAN item to Verbs specification.
1250  *
1251  * @param item[in]
1252  *   Item specification.
1253  * @param default_mask[in]
1254  *   Default bit-masks to use when item->mask is not provided.
1255  * @param data[in, out]
1256  *   User structure.
1257  *
1258  * @return
1259  *   0 on success, a negative errno value otherwise and rte_errno is set.
1260  */
1261 static int
1262 mlx5_flow_create_vlan(const struct rte_flow_item *item,
1263                       const void *default_mask,
1264                       void *data)
1265 {
1266         const struct rte_flow_item_vlan *spec = item->spec;
1267         const struct rte_flow_item_vlan *mask = item->mask;
1268         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1269         struct ibv_flow_spec_eth *eth;
1270         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1271
1272         if (spec) {
1273                 unsigned int i;
1274                 if (!mask)
1275                         mask = default_mask;
1276
1277                 for (i = 0; i != hash_rxq_init_n; ++i) {
1278                         if (!parser->queue[i].ibv_attr)
1279                                 continue;
1280
1281                         eth = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1282                                        parser->queue[i].offset - eth_size);
1283                         eth->val.vlan_tag = spec->tci;
1284                         eth->mask.vlan_tag = mask->tci;
1285                         eth->val.vlan_tag &= eth->mask.vlan_tag;
1286                 }
1287         }
1288         return 0;
1289 }
1290
1291 /**
1292  * Convert IPv4 item to Verbs specification.
1293  *
1294  * @param item[in]
1295  *   Item specification.
1296  * @param default_mask[in]
1297  *   Default bit-masks to use when item->mask is not provided.
1298  * @param data[in, out]
1299  *   User structure.
1300  *
1301  * @return
1302  *   0 on success, a negative errno value otherwise and rte_errno is set.
1303  */
1304 static int
1305 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
1306                       const void *default_mask,
1307                       void *data)
1308 {
1309         const struct rte_flow_item_ipv4 *spec = item->spec;
1310         const struct rte_flow_item_ipv4 *mask = item->mask;
1311         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1312         unsigned int ipv4_size = sizeof(struct ibv_flow_spec_ipv4_ext);
1313         struct ibv_flow_spec_ipv4_ext ipv4 = {
1314                 .type = parser->inner | IBV_FLOW_SPEC_IPV4_EXT,
1315                 .size = ipv4_size,
1316         };
1317
1318         /* Don't update layer for the inner pattern. */
1319         if (!parser->inner)
1320                 parser->layer = HASH_RXQ_IPV4;
1321         if (spec) {
1322                 if (!mask)
1323                         mask = default_mask;
1324                 ipv4.val = (struct ibv_flow_ipv4_ext_filter){
1325                         .src_ip = spec->hdr.src_addr,
1326                         .dst_ip = spec->hdr.dst_addr,
1327                         .proto = spec->hdr.next_proto_id,
1328                         .tos = spec->hdr.type_of_service,
1329                 };
1330                 ipv4.mask = (struct ibv_flow_ipv4_ext_filter){
1331                         .src_ip = mask->hdr.src_addr,
1332                         .dst_ip = mask->hdr.dst_addr,
1333                         .proto = mask->hdr.next_proto_id,
1334                         .tos = mask->hdr.type_of_service,
1335                 };
1336                 /* Remove unwanted bits from values. */
1337                 ipv4.val.src_ip &= ipv4.mask.src_ip;
1338                 ipv4.val.dst_ip &= ipv4.mask.dst_ip;
1339                 ipv4.val.proto &= ipv4.mask.proto;
1340                 ipv4.val.tos &= ipv4.mask.tos;
1341         }
1342         mlx5_flow_create_copy(parser, &ipv4, ipv4_size);
1343         return 0;
1344 }
1345
1346 /**
1347  * Convert IPv6 item to Verbs specification.
1348  *
1349  * @param item[in]
1350  *   Item specification.
1351  * @param default_mask[in]
1352  *   Default bit-masks to use when item->mask is not provided.
1353  * @param data[in, out]
1354  *   User structure.
1355  *
1356  * @return
1357  *   0 on success, a negative errno value otherwise and rte_errno is set.
1358  */
1359 static int
1360 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
1361                       const void *default_mask,
1362                       void *data)
1363 {
1364         const struct rte_flow_item_ipv6 *spec = item->spec;
1365         const struct rte_flow_item_ipv6 *mask = item->mask;
1366         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1367         unsigned int ipv6_size = sizeof(struct ibv_flow_spec_ipv6);
1368         struct ibv_flow_spec_ipv6 ipv6 = {
1369                 .type = parser->inner | IBV_FLOW_SPEC_IPV6,
1370                 .size = ipv6_size,
1371         };
1372
1373         /* Don't update layer for the inner pattern. */
1374         if (!parser->inner)
1375                 parser->layer = HASH_RXQ_IPV6;
1376         if (spec) {
1377                 unsigned int i;
1378                 uint32_t vtc_flow_val;
1379                 uint32_t vtc_flow_mask;
1380
1381                 if (!mask)
1382                         mask = default_mask;
1383                 memcpy(&ipv6.val.src_ip, spec->hdr.src_addr,
1384                        RTE_DIM(ipv6.val.src_ip));
1385                 memcpy(&ipv6.val.dst_ip, spec->hdr.dst_addr,
1386                        RTE_DIM(ipv6.val.dst_ip));
1387                 memcpy(&ipv6.mask.src_ip, mask->hdr.src_addr,
1388                        RTE_DIM(ipv6.mask.src_ip));
1389                 memcpy(&ipv6.mask.dst_ip, mask->hdr.dst_addr,
1390                        RTE_DIM(ipv6.mask.dst_ip));
1391                 vtc_flow_val = rte_be_to_cpu_32(spec->hdr.vtc_flow);
1392                 vtc_flow_mask = rte_be_to_cpu_32(mask->hdr.vtc_flow);
1393                 ipv6.val.flow_label =
1394                         rte_cpu_to_be_32((vtc_flow_val & IPV6_HDR_FL_MASK) >>
1395                                          IPV6_HDR_FL_SHIFT);
1396                 ipv6.val.traffic_class = (vtc_flow_val & IPV6_HDR_TC_MASK) >>
1397                                          IPV6_HDR_TC_SHIFT;
1398                 ipv6.val.next_hdr = spec->hdr.proto;
1399                 ipv6.val.hop_limit = spec->hdr.hop_limits;
1400                 ipv6.mask.flow_label =
1401                         rte_cpu_to_be_32((vtc_flow_mask & IPV6_HDR_FL_MASK) >>
1402                                          IPV6_HDR_FL_SHIFT);
1403                 ipv6.mask.traffic_class = (vtc_flow_mask & IPV6_HDR_TC_MASK) >>
1404                                           IPV6_HDR_TC_SHIFT;
1405                 ipv6.mask.next_hdr = mask->hdr.proto;
1406                 ipv6.mask.hop_limit = mask->hdr.hop_limits;
1407                 /* Remove unwanted bits from values. */
1408                 for (i = 0; i < RTE_DIM(ipv6.val.src_ip); ++i) {
1409                         ipv6.val.src_ip[i] &= ipv6.mask.src_ip[i];
1410                         ipv6.val.dst_ip[i] &= ipv6.mask.dst_ip[i];
1411                 }
1412                 ipv6.val.flow_label &= ipv6.mask.flow_label;
1413                 ipv6.val.traffic_class &= ipv6.mask.traffic_class;
1414                 ipv6.val.next_hdr &= ipv6.mask.next_hdr;
1415                 ipv6.val.hop_limit &= ipv6.mask.hop_limit;
1416         }
1417         mlx5_flow_create_copy(parser, &ipv6, ipv6_size);
1418         return 0;
1419 }
1420
1421 /**
1422  * Convert UDP item to Verbs specification.
1423  *
1424  * @param item[in]
1425  *   Item specification.
1426  * @param default_mask[in]
1427  *   Default bit-masks to use when item->mask is not provided.
1428  * @param data[in, out]
1429  *   User structure.
1430  *
1431  * @return
1432  *   0 on success, a negative errno value otherwise and rte_errno is set.
1433  */
1434 static int
1435 mlx5_flow_create_udp(const struct rte_flow_item *item,
1436                      const void *default_mask,
1437                      void *data)
1438 {
1439         const struct rte_flow_item_udp *spec = item->spec;
1440         const struct rte_flow_item_udp *mask = item->mask;
1441         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1442         unsigned int udp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1443         struct ibv_flow_spec_tcp_udp udp = {
1444                 .type = parser->inner | IBV_FLOW_SPEC_UDP,
1445                 .size = udp_size,
1446         };
1447
1448         /* Don't update layer for the inner pattern. */
1449         if (!parser->inner) {
1450                 if (parser->layer == HASH_RXQ_IPV4)
1451                         parser->layer = HASH_RXQ_UDPV4;
1452                 else
1453                         parser->layer = HASH_RXQ_UDPV6;
1454         }
1455         if (spec) {
1456                 if (!mask)
1457                         mask = default_mask;
1458                 udp.val.dst_port = spec->hdr.dst_port;
1459                 udp.val.src_port = spec->hdr.src_port;
1460                 udp.mask.dst_port = mask->hdr.dst_port;
1461                 udp.mask.src_port = mask->hdr.src_port;
1462                 /* Remove unwanted bits from values. */
1463                 udp.val.src_port &= udp.mask.src_port;
1464                 udp.val.dst_port &= udp.mask.dst_port;
1465         }
1466         mlx5_flow_create_copy(parser, &udp, udp_size);
1467         return 0;
1468 }
1469
1470 /**
1471  * Convert TCP item to Verbs specification.
1472  *
1473  * @param item[in]
1474  *   Item specification.
1475  * @param default_mask[in]
1476  *   Default bit-masks to use when item->mask is not provided.
1477  * @param data[in, out]
1478  *   User structure.
1479  *
1480  * @return
1481  *   0 on success, a negative errno value otherwise and rte_errno is set.
1482  */
1483 static int
1484 mlx5_flow_create_tcp(const struct rte_flow_item *item,
1485                      const void *default_mask,
1486                      void *data)
1487 {
1488         const struct rte_flow_item_tcp *spec = item->spec;
1489         const struct rte_flow_item_tcp *mask = item->mask;
1490         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1491         unsigned int tcp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1492         struct ibv_flow_spec_tcp_udp tcp = {
1493                 .type = parser->inner | IBV_FLOW_SPEC_TCP,
1494                 .size = tcp_size,
1495         };
1496
1497         /* Don't update layer for the inner pattern. */
1498         if (!parser->inner) {
1499                 if (parser->layer == HASH_RXQ_IPV4)
1500                         parser->layer = HASH_RXQ_TCPV4;
1501                 else
1502                         parser->layer = HASH_RXQ_TCPV6;
1503         }
1504         if (spec) {
1505                 if (!mask)
1506                         mask = default_mask;
1507                 tcp.val.dst_port = spec->hdr.dst_port;
1508                 tcp.val.src_port = spec->hdr.src_port;
1509                 tcp.mask.dst_port = mask->hdr.dst_port;
1510                 tcp.mask.src_port = mask->hdr.src_port;
1511                 /* Remove unwanted bits from values. */
1512                 tcp.val.src_port &= tcp.mask.src_port;
1513                 tcp.val.dst_port &= tcp.mask.dst_port;
1514         }
1515         mlx5_flow_create_copy(parser, &tcp, tcp_size);
1516         return 0;
1517 }
1518
1519 /**
1520  * Convert VXLAN item to Verbs specification.
1521  *
1522  * @param item[in]
1523  *   Item specification.
1524  * @param default_mask[in]
1525  *   Default bit-masks to use when item->mask is not provided.
1526  * @param data[in, out]
1527  *   User structure.
1528  *
1529  * @return
1530  *   0 on success, a negative errno value otherwise and rte_errno is set.
1531  */
1532 static int
1533 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
1534                        const void *default_mask,
1535                        void *data)
1536 {
1537         const struct rte_flow_item_vxlan *spec = item->spec;
1538         const struct rte_flow_item_vxlan *mask = item->mask;
1539         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1540         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1541         struct ibv_flow_spec_tunnel vxlan = {
1542                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1543                 .size = size,
1544         };
1545         union vni {
1546                 uint32_t vlan_id;
1547                 uint8_t vni[4];
1548         } id;
1549
1550         id.vni[0] = 0;
1551         parser->inner = IBV_FLOW_SPEC_INNER;
1552         if (spec) {
1553                 if (!mask)
1554                         mask = default_mask;
1555                 memcpy(&id.vni[1], spec->vni, 3);
1556                 vxlan.val.tunnel_id = id.vlan_id;
1557                 memcpy(&id.vni[1], mask->vni, 3);
1558                 vxlan.mask.tunnel_id = id.vlan_id;
1559                 /* Remove unwanted bits from values. */
1560                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1561         }
1562         /*
1563          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1564          * layer is defined in the Verbs specification it is interpreted as
1565          * wildcard and all packets will match this rule, if it follows a full
1566          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1567          * before will also match this rule.
1568          * To avoid such situation, VNI 0 is currently refused.
1569          */
1570         if (!vxlan.val.tunnel_id) {
1571                 rte_errno = EINVAL;
1572                 return -rte_errno;
1573         }
1574         mlx5_flow_create_copy(parser, &vxlan, size);
1575         return 0;
1576 }
1577
1578 /**
1579  * Convert mark/flag action to Verbs specification.
1580  *
1581  * @param parser
1582  *   Internal parser structure.
1583  * @param mark_id
1584  *   Mark identifier.
1585  *
1586  * @return
1587  *   0 on success, a negative errno value otherwise and rte_errno is set.
1588  */
1589 static int
1590 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id)
1591 {
1592         unsigned int size = sizeof(struct ibv_flow_spec_action_tag);
1593         struct ibv_flow_spec_action_tag tag = {
1594                 .type = IBV_FLOW_SPEC_ACTION_TAG,
1595                 .size = size,
1596                 .tag_id = mlx5_flow_mark_set(mark_id),
1597         };
1598
1599         assert(parser->mark);
1600         mlx5_flow_create_copy(parser, &tag, size);
1601         return 0;
1602 }
1603
1604 /**
1605  * Convert count action to Verbs specification.
1606  *
1607  * @param dev
1608  *   Pointer to Ethernet device.
1609  * @param parser
1610  *   Pointer to MLX5 flow parser structure.
1611  *
1612  * @return
1613  *   0 on success, a negative errno value otherwise and rte_errno is set.
1614  */
1615 static int
1616 mlx5_flow_create_count(struct rte_eth_dev *dev __rte_unused,
1617                        struct mlx5_flow_parse *parser __rte_unused)
1618 {
1619 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
1620         struct priv *priv = dev->data->dev_private;
1621         unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
1622         struct ibv_counter_set_init_attr init_attr = {0};
1623         struct ibv_flow_spec_counter_action counter = {
1624                 .type = IBV_FLOW_SPEC_ACTION_COUNT,
1625                 .size = size,
1626                 .counter_set_handle = 0,
1627         };
1628
1629         init_attr.counter_set_id = 0;
1630         parser->cs = mlx5_glue->create_counter_set(priv->ctx, &init_attr);
1631         if (!parser->cs) {
1632                 rte_errno = EINVAL;
1633                 return -rte_errno;
1634         }
1635         counter.counter_set_handle = parser->cs->handle;
1636         mlx5_flow_create_copy(parser, &counter, size);
1637 #endif
1638         return 0;
1639 }
1640
1641 /**
1642  * Complete flow rule creation with a drop queue.
1643  *
1644  * @param dev
1645  *   Pointer to Ethernet device.
1646  * @param parser
1647  *   Internal parser structure.
1648  * @param flow
1649  *   Pointer to the rte_flow.
1650  * @param[out] error
1651  *   Perform verbose error reporting if not NULL.
1652  *
1653  * @return
1654  *   0 on success, a negative errno value otherwise and rte_errno is set.
1655  */
1656 static int
1657 mlx5_flow_create_action_queue_drop(struct rte_eth_dev *dev,
1658                                    struct mlx5_flow_parse *parser,
1659                                    struct rte_flow *flow,
1660                                    struct rte_flow_error *error)
1661 {
1662         struct priv *priv = dev->data->dev_private;
1663         struct ibv_flow_spec_action_drop *drop;
1664         unsigned int size = sizeof(struct ibv_flow_spec_action_drop);
1665
1666         assert(priv->pd);
1667         assert(priv->ctx);
1668         flow->drop = 1;
1669         drop = (void *)((uintptr_t)parser->queue[HASH_RXQ_ETH].ibv_attr +
1670                         parser->queue[HASH_RXQ_ETH].offset);
1671         *drop = (struct ibv_flow_spec_action_drop){
1672                         .type = IBV_FLOW_SPEC_ACTION_DROP,
1673                         .size = size,
1674         };
1675         ++parser->queue[HASH_RXQ_ETH].ibv_attr->num_of_specs;
1676         parser->queue[HASH_RXQ_ETH].offset += size;
1677         flow->frxq[HASH_RXQ_ETH].ibv_attr =
1678                 parser->queue[HASH_RXQ_ETH].ibv_attr;
1679         if (parser->count)
1680                 flow->cs = parser->cs;
1681         if (!priv->dev->data->dev_started)
1682                 return 0;
1683         parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
1684         flow->frxq[HASH_RXQ_ETH].ibv_flow =
1685                 mlx5_glue->create_flow(priv->flow_drop_queue->qp,
1686                                        flow->frxq[HASH_RXQ_ETH].ibv_attr);
1687         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
1688                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1689                                    NULL, "flow rule creation failure");
1690                 goto error;
1691         }
1692         return 0;
1693 error:
1694         assert(flow);
1695         if (flow->frxq[HASH_RXQ_ETH].ibv_flow) {
1696                 claim_zero(mlx5_glue->destroy_flow
1697                            (flow->frxq[HASH_RXQ_ETH].ibv_flow));
1698                 flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
1699         }
1700         if (flow->frxq[HASH_RXQ_ETH].ibv_attr) {
1701                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
1702                 flow->frxq[HASH_RXQ_ETH].ibv_attr = NULL;
1703         }
1704         if (flow->cs) {
1705                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
1706                 flow->cs = NULL;
1707                 parser->cs = NULL;
1708         }
1709         return -rte_errno;
1710 }
1711
1712 /**
1713  * Create hash Rx queues when RSS is enabled.
1714  *
1715  * @param dev
1716  *   Pointer to Ethernet device.
1717  * @param parser
1718  *   Internal parser structure.
1719  * @param flow
1720  *   Pointer to the rte_flow.
1721  * @param[out] error
1722  *   Perform verbose error reporting if not NULL.
1723  *
1724  * @return
1725  *   0 on success, a negative errno value otherwise and rte_errno is set.
1726  */
1727 static int
1728 mlx5_flow_create_action_queue_rss(struct rte_eth_dev *dev,
1729                                   struct mlx5_flow_parse *parser,
1730                                   struct rte_flow *flow,
1731                                   struct rte_flow_error *error)
1732 {
1733         struct priv *priv = dev->data->dev_private;
1734         unsigned int i;
1735
1736         for (i = 0; i != hash_rxq_init_n; ++i) {
1737                 uint64_t hash_fields;
1738
1739                 if (!parser->queue[i].ibv_attr)
1740                         continue;
1741                 flow->frxq[i].ibv_attr = parser->queue[i].ibv_attr;
1742                 parser->queue[i].ibv_attr = NULL;
1743                 hash_fields = hash_rxq_init[i].hash_fields;
1744                 if (!priv->dev->data->dev_started)
1745                         continue;
1746                 flow->frxq[i].hrxq =
1747                         mlx5_hrxq_get(dev,
1748                                       parser->rss_conf.rss_key,
1749                                       parser->rss_conf.rss_key_len,
1750                                       hash_fields,
1751                                       parser->queues,
1752                                       parser->queues_n);
1753                 if (flow->frxq[i].hrxq)
1754                         continue;
1755                 flow->frxq[i].hrxq =
1756                         mlx5_hrxq_new(dev,
1757                                       parser->rss_conf.rss_key,
1758                                       parser->rss_conf.rss_key_len,
1759                                       hash_fields,
1760                                       parser->queues,
1761                                       parser->queues_n);
1762                 if (!flow->frxq[i].hrxq) {
1763                         return rte_flow_error_set(error, ENOMEM,
1764                                                   RTE_FLOW_ERROR_TYPE_HANDLE,
1765                                                   NULL,
1766                                                   "cannot create hash rxq");
1767                 }
1768         }
1769         return 0;
1770 }
1771
1772 /**
1773  * Complete flow rule creation.
1774  *
1775  * @param dev
1776  *   Pointer to Ethernet device.
1777  * @param parser
1778  *   Internal parser structure.
1779  * @param flow
1780  *   Pointer to the rte_flow.
1781  * @param[out] error
1782  *   Perform verbose error reporting if not NULL.
1783  *
1784  * @return
1785  *   0 on success, a negative errno value otherwise and rte_errno is set.
1786  */
1787 static int
1788 mlx5_flow_create_action_queue(struct rte_eth_dev *dev,
1789                               struct mlx5_flow_parse *parser,
1790                               struct rte_flow *flow,
1791                               struct rte_flow_error *error)
1792 {
1793         struct priv *priv = dev->data->dev_private;
1794         int ret;
1795         unsigned int i;
1796         unsigned int flows_n = 0;
1797
1798         assert(priv->pd);
1799         assert(priv->ctx);
1800         assert(!parser->drop);
1801         ret = mlx5_flow_create_action_queue_rss(dev, parser, flow, error);
1802         if (ret)
1803                 goto error;
1804         if (parser->count)
1805                 flow->cs = parser->cs;
1806         if (!priv->dev->data->dev_started)
1807                 return 0;
1808         for (i = 0; i != hash_rxq_init_n; ++i) {
1809                 if (!flow->frxq[i].hrxq)
1810                         continue;
1811                 flow->frxq[i].ibv_flow =
1812                         mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
1813                                                flow->frxq[i].ibv_attr);
1814                 if (!flow->frxq[i].ibv_flow) {
1815                         rte_flow_error_set(error, ENOMEM,
1816                                            RTE_FLOW_ERROR_TYPE_HANDLE,
1817                                            NULL, "flow rule creation failure");
1818                         goto error;
1819                 }
1820                 ++flows_n;
1821                 DRV_LOG(DEBUG, "port %u %p type %d QP %p ibv_flow %p",
1822                         dev->data->port_id,
1823                         (void *)flow, i,
1824                         (void *)flow->frxq[i].hrxq,
1825                         (void *)flow->frxq[i].ibv_flow);
1826         }
1827         if (!flows_n) {
1828                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
1829                                    NULL, "internal error in flow creation");
1830                 goto error;
1831         }
1832         for (i = 0; i != parser->queues_n; ++i) {
1833                 struct mlx5_rxq_data *q =
1834                         (*priv->rxqs)[parser->queues[i]];
1835
1836                 q->mark |= parser->mark;
1837         }
1838         return 0;
1839 error:
1840         ret = rte_errno; /* Save rte_errno before cleanup. */
1841         assert(flow);
1842         for (i = 0; i != hash_rxq_init_n; ++i) {
1843                 if (flow->frxq[i].ibv_flow) {
1844                         struct ibv_flow *ibv_flow = flow->frxq[i].ibv_flow;
1845
1846                         claim_zero(mlx5_glue->destroy_flow(ibv_flow));
1847                 }
1848                 if (flow->frxq[i].hrxq)
1849                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
1850                 if (flow->frxq[i].ibv_attr)
1851                         rte_free(flow->frxq[i].ibv_attr);
1852         }
1853         if (flow->cs) {
1854                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
1855                 flow->cs = NULL;
1856                 parser->cs = NULL;
1857         }
1858         rte_errno = ret; /* Restore rte_errno. */
1859         return -rte_errno;
1860 }
1861
1862 /**
1863  * Convert a flow.
1864  *
1865  * @param dev
1866  *   Pointer to Ethernet device.
1867  * @param list
1868  *   Pointer to a TAILQ flow list.
1869  * @param[in] attr
1870  *   Flow rule attributes.
1871  * @param[in] pattern
1872  *   Pattern specification (list terminated by the END pattern item).
1873  * @param[in] actions
1874  *   Associated actions (list terminated by the END action).
1875  * @param[out] error
1876  *   Perform verbose error reporting if not NULL.
1877  *
1878  * @return
1879  *   A flow on success, NULL otherwise and rte_errno is set.
1880  */
1881 static struct rte_flow *
1882 mlx5_flow_list_create(struct rte_eth_dev *dev,
1883                       struct mlx5_flows *list,
1884                       const struct rte_flow_attr *attr,
1885                       const struct rte_flow_item items[],
1886                       const struct rte_flow_action actions[],
1887                       struct rte_flow_error *error)
1888 {
1889         struct mlx5_flow_parse parser = { .create = 1, };
1890         struct rte_flow *flow = NULL;
1891         unsigned int i;
1892         int ret;
1893
1894         ret = mlx5_flow_convert(dev, attr, items, actions, error, &parser);
1895         if (ret)
1896                 goto exit;
1897         flow = rte_calloc(__func__, 1,
1898                           sizeof(*flow) + parser.queues_n * sizeof(uint16_t),
1899                           0);
1900         if (!flow) {
1901                 rte_flow_error_set(error, ENOMEM,
1902                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1903                                    NULL,
1904                                    "cannot allocate flow memory");
1905                 return NULL;
1906         }
1907         /* Copy queues configuration. */
1908         flow->queues = (uint16_t (*)[])(flow + 1);
1909         memcpy(flow->queues, parser.queues, parser.queues_n * sizeof(uint16_t));
1910         flow->queues_n = parser.queues_n;
1911         flow->mark = parser.mark;
1912         /* Copy RSS configuration. */
1913         flow->rss_conf = parser.rss_conf;
1914         flow->rss_conf.rss_key = flow->rss_key;
1915         memcpy(flow->rss_key, parser.rss_key, parser.rss_conf.rss_key_len);
1916         /* finalise the flow. */
1917         if (parser.drop)
1918                 ret = mlx5_flow_create_action_queue_drop(dev, &parser, flow,
1919                                                          error);
1920         else
1921                 ret = mlx5_flow_create_action_queue(dev, &parser, flow, error);
1922         if (ret)
1923                 goto exit;
1924         TAILQ_INSERT_TAIL(list, flow, next);
1925         DRV_LOG(DEBUG, "port %u flow created %p", dev->data->port_id,
1926                 (void *)flow);
1927         return flow;
1928 exit:
1929         DRV_LOG(ERR, "port %u flow creation error: %s", dev->data->port_id,
1930                 error->message);
1931         for (i = 0; i != hash_rxq_init_n; ++i) {
1932                 if (parser.queue[i].ibv_attr)
1933                         rte_free(parser.queue[i].ibv_attr);
1934         }
1935         rte_free(flow);
1936         return NULL;
1937 }
1938
1939 /**
1940  * Validate a flow supported by the NIC.
1941  *
1942  * @see rte_flow_validate()
1943  * @see rte_flow_ops
1944  */
1945 int
1946 mlx5_flow_validate(struct rte_eth_dev *dev,
1947                    const struct rte_flow_attr *attr,
1948                    const struct rte_flow_item items[],
1949                    const struct rte_flow_action actions[],
1950                    struct rte_flow_error *error)
1951 {
1952         struct mlx5_flow_parse parser = { .create = 0, };
1953
1954         return mlx5_flow_convert(dev, attr, items, actions, error, &parser);
1955 }
1956
1957 /**
1958  * Create a flow.
1959  *
1960  * @see rte_flow_create()
1961  * @see rte_flow_ops
1962  */
1963 struct rte_flow *
1964 mlx5_flow_create(struct rte_eth_dev *dev,
1965                  const struct rte_flow_attr *attr,
1966                  const struct rte_flow_item items[],
1967                  const struct rte_flow_action actions[],
1968                  struct rte_flow_error *error)
1969 {
1970         struct priv *priv = dev->data->dev_private;
1971
1972         return mlx5_flow_list_create(dev, &priv->flows, attr, items, actions,
1973                                      error);
1974 }
1975
1976 /**
1977  * Destroy a flow in a list.
1978  *
1979  * @param dev
1980  *   Pointer to Ethernet device.
1981  * @param list
1982  *   Pointer to a TAILQ flow list.
1983  * @param[in] flow
1984  *   Flow to destroy.
1985  */
1986 static void
1987 mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
1988                        struct rte_flow *flow)
1989 {
1990         struct priv *priv = dev->data->dev_private;
1991         unsigned int i;
1992
1993         if (flow->drop || !flow->mark)
1994                 goto free;
1995         for (i = 0; i != flow->queues_n; ++i) {
1996                 struct rte_flow *tmp;
1997                 int mark = 0;
1998
1999                 /*
2000                  * To remove the mark from the queue, the queue must not be
2001                  * present in any other marked flow (RSS or not).
2002                  */
2003                 TAILQ_FOREACH(tmp, list, next) {
2004                         unsigned int j;
2005                         uint16_t *tqs = NULL;
2006                         uint16_t tq_n = 0;
2007
2008                         if (!tmp->mark)
2009                                 continue;
2010                         for (j = 0; j != hash_rxq_init_n; ++j) {
2011                                 if (!tmp->frxq[j].hrxq)
2012                                         continue;
2013                                 tqs = tmp->frxq[j].hrxq->ind_table->queues;
2014                                 tq_n = tmp->frxq[j].hrxq->ind_table->queues_n;
2015                         }
2016                         if (!tq_n)
2017                                 continue;
2018                         for (j = 0; (j != tq_n) && !mark; j++)
2019                                 if (tqs[j] == (*flow->queues)[i])
2020                                         mark = 1;
2021                 }
2022                 (*priv->rxqs)[(*flow->queues)[i]]->mark = mark;
2023         }
2024 free:
2025         if (flow->drop) {
2026                 if (flow->frxq[HASH_RXQ_ETH].ibv_flow)
2027                         claim_zero(mlx5_glue->destroy_flow
2028                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2029                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
2030         } else {
2031                 for (i = 0; i != hash_rxq_init_n; ++i) {
2032                         struct mlx5_flow *frxq = &flow->frxq[i];
2033
2034                         if (frxq->ibv_flow)
2035                                 claim_zero(mlx5_glue->destroy_flow
2036                                            (frxq->ibv_flow));
2037                         if (frxq->hrxq)
2038                                 mlx5_hrxq_release(dev, frxq->hrxq);
2039                         if (frxq->ibv_attr)
2040                                 rte_free(frxq->ibv_attr);
2041                 }
2042         }
2043         if (flow->cs) {
2044                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2045                 flow->cs = NULL;
2046         }
2047         TAILQ_REMOVE(list, flow, next);
2048         DRV_LOG(DEBUG, "port %u flow destroyed %p", dev->data->port_id,
2049                 (void *)flow);
2050         rte_free(flow);
2051 }
2052
2053 /**
2054  * Destroy all flows.
2055  *
2056  * @param dev
2057  *   Pointer to Ethernet device.
2058  * @param list
2059  *   Pointer to a TAILQ flow list.
2060  */
2061 void
2062 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2063 {
2064         while (!TAILQ_EMPTY(list)) {
2065                 struct rte_flow *flow;
2066
2067                 flow = TAILQ_FIRST(list);
2068                 mlx5_flow_list_destroy(dev, list, flow);
2069         }
2070 }
2071
2072 /**
2073  * Create drop queue.
2074  *
2075  * @param dev
2076  *   Pointer to Ethernet device.
2077  *
2078  * @return
2079  *   0 on success, a negative errno value otherwise and rte_errno is set.
2080  */
2081 int
2082 mlx5_flow_create_drop_queue(struct rte_eth_dev *dev)
2083 {
2084         struct priv *priv = dev->data->dev_private;
2085         struct mlx5_hrxq_drop *fdq = NULL;
2086
2087         assert(priv->pd);
2088         assert(priv->ctx);
2089         fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0);
2090         if (!fdq) {
2091                 DRV_LOG(WARNING,
2092                         "port %u cannot allocate memory for drop queue",
2093                         dev->data->port_id);
2094                 rte_errno = ENOMEM;
2095                 return -rte_errno;
2096         }
2097         fdq->cq = mlx5_glue->create_cq(priv->ctx, 1, NULL, NULL, 0);
2098         if (!fdq->cq) {
2099                 DRV_LOG(WARNING, "port %u cannot allocate CQ for drop queue",
2100                         dev->data->port_id);
2101                 rte_errno = errno;
2102                 goto error;
2103         }
2104         fdq->wq = mlx5_glue->create_wq
2105                 (priv->ctx,
2106                  &(struct ibv_wq_init_attr){
2107                         .wq_type = IBV_WQT_RQ,
2108                         .max_wr = 1,
2109                         .max_sge = 1,
2110                         .pd = priv->pd,
2111                         .cq = fdq->cq,
2112                  });
2113         if (!fdq->wq) {
2114                 DRV_LOG(WARNING, "port %u cannot allocate WQ for drop queue",
2115                         dev->data->port_id);
2116                 rte_errno = errno;
2117                 goto error;
2118         }
2119         fdq->ind_table = mlx5_glue->create_rwq_ind_table
2120                 (priv->ctx,
2121                  &(struct ibv_rwq_ind_table_init_attr){
2122                         .log_ind_tbl_size = 0,
2123                         .ind_tbl = &fdq->wq,
2124                         .comp_mask = 0,
2125                  });
2126         if (!fdq->ind_table) {
2127                 DRV_LOG(WARNING,
2128                         "port %u cannot allocate indirection table for drop"
2129                         " queue",
2130                         dev->data->port_id);
2131                 rte_errno = errno;
2132                 goto error;
2133         }
2134         fdq->qp = mlx5_glue->create_qp_ex
2135                 (priv->ctx,
2136                  &(struct ibv_qp_init_attr_ex){
2137                         .qp_type = IBV_QPT_RAW_PACKET,
2138                         .comp_mask =
2139                                 IBV_QP_INIT_ATTR_PD |
2140                                 IBV_QP_INIT_ATTR_IND_TABLE |
2141                                 IBV_QP_INIT_ATTR_RX_HASH,
2142                         .rx_hash_conf = (struct ibv_rx_hash_conf){
2143                                 .rx_hash_function =
2144                                         IBV_RX_HASH_FUNC_TOEPLITZ,
2145                                 .rx_hash_key_len = rss_hash_default_key_len,
2146                                 .rx_hash_key = rss_hash_default_key,
2147                                 .rx_hash_fields_mask = 0,
2148                                 },
2149                         .rwq_ind_tbl = fdq->ind_table,
2150                         .pd = priv->pd
2151                  });
2152         if (!fdq->qp) {
2153                 DRV_LOG(WARNING, "port %u cannot allocate QP for drop queue",
2154                         dev->data->port_id);
2155                 rte_errno = errno;
2156                 goto error;
2157         }
2158         priv->flow_drop_queue = fdq;
2159         return 0;
2160 error:
2161         if (fdq->qp)
2162                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2163         if (fdq->ind_table)
2164                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2165         if (fdq->wq)
2166                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2167         if (fdq->cq)
2168                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2169         if (fdq)
2170                 rte_free(fdq);
2171         priv->flow_drop_queue = NULL;
2172         return -rte_errno;
2173 }
2174
2175 /**
2176  * Delete drop queue.
2177  *
2178  * @param dev
2179  *   Pointer to Ethernet device.
2180  */
2181 void
2182 mlx5_flow_delete_drop_queue(struct rte_eth_dev *dev)
2183 {
2184         struct priv *priv = dev->data->dev_private;
2185         struct mlx5_hrxq_drop *fdq = priv->flow_drop_queue;
2186
2187         if (!fdq)
2188                 return;
2189         if (fdq->qp)
2190                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2191         if (fdq->ind_table)
2192                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2193         if (fdq->wq)
2194                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2195         if (fdq->cq)
2196                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2197         rte_free(fdq);
2198         priv->flow_drop_queue = NULL;
2199 }
2200
2201 /**
2202  * Remove all flows.
2203  *
2204  * @param dev
2205  *   Pointer to Ethernet device.
2206  * @param list
2207  *   Pointer to a TAILQ flow list.
2208  */
2209 void
2210 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2211 {
2212         struct priv *priv = dev->data->dev_private;
2213         struct rte_flow *flow;
2214
2215         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
2216                 unsigned int i;
2217                 struct mlx5_ind_table_ibv *ind_tbl = NULL;
2218
2219                 if (flow->drop) {
2220                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow)
2221                                 continue;
2222                         claim_zero(mlx5_glue->destroy_flow
2223                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2224                         flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
2225                         DRV_LOG(DEBUG, "port %u flow %p removed",
2226                                 dev->data->port_id, (void *)flow);
2227                         /* Next flow. */
2228                         continue;
2229                 }
2230                 /* Verify the flow has not already been cleaned. */
2231                 for (i = 0; i != hash_rxq_init_n; ++i) {
2232                         if (!flow->frxq[i].ibv_flow)
2233                                 continue;
2234                         /*
2235                          * Indirection table may be necessary to remove the
2236                          * flags in the Rx queues.
2237                          * This helps to speed-up the process by avoiding
2238                          * another loop.
2239                          */
2240                         ind_tbl = flow->frxq[i].hrxq->ind_table;
2241                         break;
2242                 }
2243                 if (i == hash_rxq_init_n)
2244                         return;
2245                 if (flow->mark) {
2246                         assert(ind_tbl);
2247                         for (i = 0; i != ind_tbl->queues_n; ++i)
2248                                 (*priv->rxqs)[ind_tbl->queues[i]]->mark = 0;
2249                 }
2250                 for (i = 0; i != hash_rxq_init_n; ++i) {
2251                         if (!flow->frxq[i].ibv_flow)
2252                                 continue;
2253                         claim_zero(mlx5_glue->destroy_flow
2254                                    (flow->frxq[i].ibv_flow));
2255                         flow->frxq[i].ibv_flow = NULL;
2256                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
2257                         flow->frxq[i].hrxq = NULL;
2258                 }
2259                 DRV_LOG(DEBUG, "port %u flow %p removed", dev->data->port_id,
2260                         (void *)flow);
2261         }
2262 }
2263
2264 /**
2265  * Add all flows.
2266  *
2267  * @param dev
2268  *   Pointer to Ethernet device.
2269  * @param list
2270  *   Pointer to a TAILQ flow list.
2271  *
2272  * @return
2273  *   0 on success, a negative errno value otherwise and rte_errno is set.
2274  */
2275 int
2276 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2277 {
2278         struct priv *priv = dev->data->dev_private;
2279         struct rte_flow *flow;
2280
2281         TAILQ_FOREACH(flow, list, next) {
2282                 unsigned int i;
2283
2284                 if (flow->drop) {
2285                         flow->frxq[HASH_RXQ_ETH].ibv_flow =
2286                                 mlx5_glue->create_flow
2287                                 (priv->flow_drop_queue->qp,
2288                                  flow->frxq[HASH_RXQ_ETH].ibv_attr);
2289                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2290                                 DRV_LOG(DEBUG,
2291                                         "port %u flow %p cannot be applied",
2292                                         dev->data->port_id, (void *)flow);
2293                                 rte_errno = EINVAL;
2294                                 return -rte_errno;
2295                         }
2296                         DRV_LOG(DEBUG, "port %u flow %p applied",
2297                                 dev->data->port_id, (void *)flow);
2298                         /* Next flow. */
2299                         continue;
2300                 }
2301                 for (i = 0; i != hash_rxq_init_n; ++i) {
2302                         if (!flow->frxq[i].ibv_attr)
2303                                 continue;
2304                         flow->frxq[i].hrxq =
2305                                 mlx5_hrxq_get(dev, flow->rss_conf.rss_key,
2306                                               flow->rss_conf.rss_key_len,
2307                                               hash_rxq_init[i].hash_fields,
2308                                               (*flow->queues),
2309                                               flow->queues_n);
2310                         if (flow->frxq[i].hrxq)
2311                                 goto flow_create;
2312                         flow->frxq[i].hrxq =
2313                                 mlx5_hrxq_new(dev, flow->rss_conf.rss_key,
2314                                               flow->rss_conf.rss_key_len,
2315                                               hash_rxq_init[i].hash_fields,
2316                                               (*flow->queues),
2317                                               flow->queues_n);
2318                         if (!flow->frxq[i].hrxq) {
2319                                 DRV_LOG(DEBUG,
2320                                         "port %u flow %p cannot be applied",
2321                                         dev->data->port_id, (void *)flow);
2322                                 rte_errno = EINVAL;
2323                                 return -rte_errno;
2324                         }
2325 flow_create:
2326                         flow->frxq[i].ibv_flow =
2327                                 mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
2328                                                        flow->frxq[i].ibv_attr);
2329                         if (!flow->frxq[i].ibv_flow) {
2330                                 DRV_LOG(DEBUG,
2331                                         "port %u flow %p cannot be applied",
2332                                         dev->data->port_id, (void *)flow);
2333                                 rte_errno = EINVAL;
2334                                 return -rte_errno;
2335                         }
2336                         DRV_LOG(DEBUG, "port %u flow %p applied",
2337                                 dev->data->port_id, (void *)flow);
2338                 }
2339                 if (!flow->mark)
2340                         continue;
2341                 for (i = 0; i != flow->queues_n; ++i)
2342                         (*priv->rxqs)[(*flow->queues)[i]]->mark = 1;
2343         }
2344         return 0;
2345 }
2346
2347 /**
2348  * Verify the flow list is empty
2349  *
2350  * @param dev
2351  *  Pointer to Ethernet device.
2352  *
2353  * @return the number of flows not released.
2354  */
2355 int
2356 mlx5_flow_verify(struct rte_eth_dev *dev)
2357 {
2358         struct priv *priv = dev->data->dev_private;
2359         struct rte_flow *flow;
2360         int ret = 0;
2361
2362         TAILQ_FOREACH(flow, &priv->flows, next) {
2363                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2364                         dev->data->port_id, (void *)flow);
2365                 ++ret;
2366         }
2367         return ret;
2368 }
2369
2370 /**
2371  * Enable a control flow configured from the control plane.
2372  *
2373  * @param dev
2374  *   Pointer to Ethernet device.
2375  * @param eth_spec
2376  *   An Ethernet flow spec to apply.
2377  * @param eth_mask
2378  *   An Ethernet flow mask to apply.
2379  * @param vlan_spec
2380  *   A VLAN flow spec to apply.
2381  * @param vlan_mask
2382  *   A VLAN flow mask to apply.
2383  *
2384  * @return
2385  *   0 on success, a negative errno value otherwise and rte_errno is set.
2386  */
2387 int
2388 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2389                     struct rte_flow_item_eth *eth_spec,
2390                     struct rte_flow_item_eth *eth_mask,
2391                     struct rte_flow_item_vlan *vlan_spec,
2392                     struct rte_flow_item_vlan *vlan_mask)
2393 {
2394         struct priv *priv = dev->data->dev_private;
2395         const struct rte_flow_attr attr = {
2396                 .ingress = 1,
2397                 .priority = MLX5_CTRL_FLOW_PRIORITY,
2398         };
2399         struct rte_flow_item items[] = {
2400                 {
2401                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2402                         .spec = eth_spec,
2403                         .last = NULL,
2404                         .mask = eth_mask,
2405                 },
2406                 {
2407                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2408                                 RTE_FLOW_ITEM_TYPE_END,
2409                         .spec = vlan_spec,
2410                         .last = NULL,
2411                         .mask = vlan_mask,
2412                 },
2413                 {
2414                         .type = RTE_FLOW_ITEM_TYPE_END,
2415                 },
2416         };
2417         struct rte_flow_action actions[] = {
2418                 {
2419                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2420                 },
2421                 {
2422                         .type = RTE_FLOW_ACTION_TYPE_END,
2423                 },
2424         };
2425         struct rte_flow *flow;
2426         struct rte_flow_error error;
2427         unsigned int i;
2428         union {
2429                 struct rte_flow_action_rss rss;
2430                 struct {
2431                         const struct rte_eth_rss_conf *rss_conf;
2432                         uint16_t num;
2433                         uint16_t queue[RTE_MAX_QUEUES_PER_PORT];
2434                 } local;
2435         } action_rss;
2436
2437         if (!priv->reta_idx_n) {
2438                 rte_errno = EINVAL;
2439                 return -rte_errno;
2440         }
2441         for (i = 0; i != priv->reta_idx_n; ++i)
2442                 action_rss.local.queue[i] = (*priv->reta_idx)[i];
2443         action_rss.local.rss_conf = &priv->rss_conf;
2444         action_rss.local.num = priv->reta_idx_n;
2445         actions[0].conf = (const void *)&action_rss.rss;
2446         flow = mlx5_flow_list_create(dev, &priv->ctrl_flows, &attr, items,
2447                                      actions, &error);
2448         if (!flow)
2449                 return -rte_errno;
2450         return 0;
2451 }
2452
2453 /**
2454  * Enable a flow control configured from the control plane.
2455  *
2456  * @param dev
2457  *   Pointer to Ethernet device.
2458  * @param eth_spec
2459  *   An Ethernet flow spec to apply.
2460  * @param eth_mask
2461  *   An Ethernet flow mask to apply.
2462  *
2463  * @return
2464  *   0 on success, a negative errno value otherwise and rte_errno is set.
2465  */
2466 int
2467 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2468                struct rte_flow_item_eth *eth_spec,
2469                struct rte_flow_item_eth *eth_mask)
2470 {
2471         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2472 }
2473
2474 /**
2475  * Destroy a flow.
2476  *
2477  * @see rte_flow_destroy()
2478  * @see rte_flow_ops
2479  */
2480 int
2481 mlx5_flow_destroy(struct rte_eth_dev *dev,
2482                   struct rte_flow *flow,
2483                   struct rte_flow_error *error __rte_unused)
2484 {
2485         struct priv *priv = dev->data->dev_private;
2486
2487         mlx5_flow_list_destroy(dev, &priv->flows, flow);
2488         return 0;
2489 }
2490
2491 /**
2492  * Destroy all flows.
2493  *
2494  * @see rte_flow_flush()
2495  * @see rte_flow_ops
2496  */
2497 int
2498 mlx5_flow_flush(struct rte_eth_dev *dev,
2499                 struct rte_flow_error *error __rte_unused)
2500 {
2501         struct priv *priv = dev->data->dev_private;
2502
2503         mlx5_flow_list_flush(dev, &priv->flows);
2504         return 0;
2505 }
2506
2507 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
2508 /**
2509  * Query flow counter.
2510  *
2511  * @param cs
2512  *   the counter set.
2513  * @param counter_value
2514  *   returned data from the counter.
2515  *
2516  * @return
2517  *   0 on success, a negative errno value otherwise and rte_errno is set.
2518  */
2519 static int
2520 mlx5_flow_query_count(struct ibv_counter_set *cs,
2521                       struct mlx5_flow_counter_stats *counter_stats,
2522                       struct rte_flow_query_count *query_count,
2523                       struct rte_flow_error *error)
2524 {
2525         uint64_t counters[2];
2526         struct ibv_query_counter_set_attr query_cs_attr = {
2527                 .cs = cs,
2528                 .query_flags = IBV_COUNTER_SET_FORCE_UPDATE,
2529         };
2530         struct ibv_counter_set_data query_out = {
2531                 .out = counters,
2532                 .outlen = 2 * sizeof(uint64_t),
2533         };
2534         int err = mlx5_glue->query_counter_set(&query_cs_attr, &query_out);
2535
2536         if (err)
2537                 return rte_flow_error_set(error, err,
2538                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2539                                           NULL,
2540                                           "cannot read counter");
2541         query_count->hits_set = 1;
2542         query_count->bytes_set = 1;
2543         query_count->hits = counters[0] - counter_stats->hits;
2544         query_count->bytes = counters[1] - counter_stats->bytes;
2545         if (query_count->reset) {
2546                 counter_stats->hits = counters[0];
2547                 counter_stats->bytes = counters[1];
2548         }
2549         return 0;
2550 }
2551
2552 /**
2553  * Query a flows.
2554  *
2555  * @see rte_flow_query()
2556  * @see rte_flow_ops
2557  */
2558 int
2559 mlx5_flow_query(struct rte_eth_dev *dev __rte_unused,
2560                 struct rte_flow *flow,
2561                 enum rte_flow_action_type action __rte_unused,
2562                 void *data,
2563                 struct rte_flow_error *error)
2564 {
2565         if (flow->cs) {
2566                 int ret;
2567
2568                 ret = mlx5_flow_query_count(flow->cs,
2569                                             &flow->counter_stats,
2570                                             (struct rte_flow_query_count *)data,
2571                                             error);
2572                 if (ret)
2573                         return ret;
2574         } else {
2575                 return rte_flow_error_set(error, EINVAL,
2576                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2577                                           NULL,
2578                                           "no counter found for flow");
2579         }
2580         return 0;
2581 }
2582 #endif
2583
2584 /**
2585  * Isolated mode.
2586  *
2587  * @see rte_flow_isolate()
2588  * @see rte_flow_ops
2589  */
2590 int
2591 mlx5_flow_isolate(struct rte_eth_dev *dev,
2592                   int enable,
2593                   struct rte_flow_error *error)
2594 {
2595         struct priv *priv = dev->data->dev_private;
2596
2597         if (dev->data->dev_started) {
2598                 rte_flow_error_set(error, EBUSY,
2599                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2600                                    NULL,
2601                                    "port must be stopped first");
2602                 return -rte_errno;
2603         }
2604         priv->isolated = !!enable;
2605         if (enable)
2606                 priv->dev->dev_ops = &mlx5_dev_ops_isolate;
2607         else
2608                 priv->dev->dev_ops = &mlx5_dev_ops;
2609         return 0;
2610 }
2611
2612 /**
2613  * Convert a flow director filter to a generic flow.
2614  *
2615  * @param dev
2616  *   Pointer to Ethernet device.
2617  * @param fdir_filter
2618  *   Flow director filter to add.
2619  * @param attributes
2620  *   Generic flow parameters structure.
2621  *
2622  * @return
2623  *   0 on success, a negative errno value otherwise and rte_errno is set.
2624  */
2625 static int
2626 mlx5_fdir_filter_convert(struct rte_eth_dev *dev,
2627                          const struct rte_eth_fdir_filter *fdir_filter,
2628                          struct mlx5_fdir *attributes)
2629 {
2630         struct priv *priv = dev->data->dev_private;
2631         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2632
2633         /* Validate queue number. */
2634         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2635                 DRV_LOG(ERR, "port %u invalid queue number %d",
2636                         dev->data->port_id, fdir_filter->action.rx_queue);
2637                 rte_errno = EINVAL;
2638                 return -rte_errno;
2639         }
2640         attributes->attr.ingress = 1;
2641         attributes->items[0] = (struct rte_flow_item) {
2642                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2643                 .spec = &attributes->l2,
2644                 .mask = &attributes->l2_mask,
2645         };
2646         switch (fdir_filter->action.behavior) {
2647         case RTE_ETH_FDIR_ACCEPT:
2648                 attributes->actions[0] = (struct rte_flow_action){
2649                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2650                         .conf = &attributes->queue,
2651                 };
2652                 break;
2653         case RTE_ETH_FDIR_REJECT:
2654                 attributes->actions[0] = (struct rte_flow_action){
2655                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2656                 };
2657                 break;
2658         default:
2659                 DRV_LOG(ERR, "port %u invalid behavior %d",
2660                         dev->data->port_id,
2661                         fdir_filter->action.behavior);
2662                 rte_errno = ENOTSUP;
2663                 return -rte_errno;
2664         }
2665         attributes->queue.index = fdir_filter->action.rx_queue;
2666         switch (fdir_filter->input.flow_type) {
2667         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2668                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2669                         .src_addr = input->flow.udp4_flow.ip.src_ip,
2670                         .dst_addr = input->flow.udp4_flow.ip.dst_ip,
2671                         .time_to_live = input->flow.udp4_flow.ip.ttl,
2672                         .type_of_service = input->flow.udp4_flow.ip.tos,
2673                         .next_proto_id = input->flow.udp4_flow.ip.proto,
2674                 };
2675                 attributes->l4.udp.hdr = (struct udp_hdr){
2676                         .src_port = input->flow.udp4_flow.src_port,
2677                         .dst_port = input->flow.udp4_flow.dst_port,
2678                 };
2679                 attributes->items[1] = (struct rte_flow_item){
2680                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2681                         .spec = &attributes->l3,
2682                         .mask = &attributes->l3,
2683                 };
2684                 attributes->items[2] = (struct rte_flow_item){
2685                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2686                         .spec = &attributes->l4,
2687                         .mask = &attributes->l4,
2688                 };
2689                 break;
2690         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2691                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2692                         .src_addr = input->flow.tcp4_flow.ip.src_ip,
2693                         .dst_addr = input->flow.tcp4_flow.ip.dst_ip,
2694                         .time_to_live = input->flow.tcp4_flow.ip.ttl,
2695                         .type_of_service = input->flow.tcp4_flow.ip.tos,
2696                         .next_proto_id = input->flow.tcp4_flow.ip.proto,
2697                 };
2698                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2699                         .src_port = input->flow.tcp4_flow.src_port,
2700                         .dst_port = input->flow.tcp4_flow.dst_port,
2701                 };
2702                 attributes->items[1] = (struct rte_flow_item){
2703                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2704                         .spec = &attributes->l3,
2705                         .mask = &attributes->l3,
2706                 };
2707                 attributes->items[2] = (struct rte_flow_item){
2708                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2709                         .spec = &attributes->l4,
2710                         .mask = &attributes->l4,
2711                 };
2712                 break;
2713         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2714                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2715                         .src_addr = input->flow.ip4_flow.src_ip,
2716                         .dst_addr = input->flow.ip4_flow.dst_ip,
2717                         .time_to_live = input->flow.ip4_flow.ttl,
2718                         .type_of_service = input->flow.ip4_flow.tos,
2719                         .next_proto_id = input->flow.ip4_flow.proto,
2720                 };
2721                 attributes->items[1] = (struct rte_flow_item){
2722                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2723                         .spec = &attributes->l3,
2724                         .mask = &attributes->l3,
2725                 };
2726                 break;
2727         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2728                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2729                         .hop_limits = input->flow.udp6_flow.ip.hop_limits,
2730                         .proto = input->flow.udp6_flow.ip.proto,
2731                 };
2732                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2733                        input->flow.udp6_flow.ip.src_ip,
2734                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2735                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2736                        input->flow.udp6_flow.ip.dst_ip,
2737                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2738                 attributes->l4.udp.hdr = (struct udp_hdr){
2739                         .src_port = input->flow.udp6_flow.src_port,
2740                         .dst_port = input->flow.udp6_flow.dst_port,
2741                 };
2742                 attributes->items[1] = (struct rte_flow_item){
2743                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2744                         .spec = &attributes->l3,
2745                         .mask = &attributes->l3,
2746                 };
2747                 attributes->items[2] = (struct rte_flow_item){
2748                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2749                         .spec = &attributes->l4,
2750                         .mask = &attributes->l4,
2751                 };
2752                 break;
2753         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2754                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2755                         .hop_limits = input->flow.tcp6_flow.ip.hop_limits,
2756                         .proto = input->flow.tcp6_flow.ip.proto,
2757                 };
2758                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2759                        input->flow.tcp6_flow.ip.src_ip,
2760                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2761                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2762                        input->flow.tcp6_flow.ip.dst_ip,
2763                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2764                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2765                         .src_port = input->flow.tcp6_flow.src_port,
2766                         .dst_port = input->flow.tcp6_flow.dst_port,
2767                 };
2768                 attributes->items[1] = (struct rte_flow_item){
2769                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2770                         .spec = &attributes->l3,
2771                         .mask = &attributes->l3,
2772                 };
2773                 attributes->items[2] = (struct rte_flow_item){
2774                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2775                         .spec = &attributes->l4,
2776                         .mask = &attributes->l4,
2777                 };
2778                 break;
2779         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2780                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2781                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2782                         .proto = input->flow.ipv6_flow.proto,
2783                 };
2784                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2785                        input->flow.ipv6_flow.src_ip,
2786                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2787                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2788                        input->flow.ipv6_flow.dst_ip,
2789                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2790                 attributes->items[1] = (struct rte_flow_item){
2791                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2792                         .spec = &attributes->l3,
2793                         .mask = &attributes->l3,
2794                 };
2795                 break;
2796         default:
2797                 DRV_LOG(ERR, "port %u invalid flow type%d",
2798                         dev->data->port_id, fdir_filter->input.flow_type);
2799                 rte_errno = ENOTSUP;
2800                 return -rte_errno;
2801         }
2802         return 0;
2803 }
2804
2805 /**
2806  * Add new flow director filter and store it in list.
2807  *
2808  * @param dev
2809  *   Pointer to Ethernet device.
2810  * @param fdir_filter
2811  *   Flow director filter to add.
2812  *
2813  * @return
2814  *   0 on success, a negative errno value otherwise and rte_errno is set.
2815  */
2816 static int
2817 mlx5_fdir_filter_add(struct rte_eth_dev *dev,
2818                      const struct rte_eth_fdir_filter *fdir_filter)
2819 {
2820         struct priv *priv = dev->data->dev_private;
2821         struct mlx5_fdir attributes = {
2822                 .attr.group = 0,
2823                 .l2_mask = {
2824                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2825                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2826                         .type = 0,
2827                 },
2828         };
2829         struct mlx5_flow_parse parser = {
2830                 .layer = HASH_RXQ_ETH,
2831         };
2832         struct rte_flow_error error;
2833         struct rte_flow *flow;
2834         int ret;
2835
2836         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
2837         if (ret)
2838                 return ret;
2839         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
2840                                 attributes.actions, &error, &parser);
2841         if (ret)
2842                 return ret;
2843         flow = mlx5_flow_list_create(dev, &priv->flows, &attributes.attr,
2844                                      attributes.items, attributes.actions,
2845                                      &error);
2846         if (flow) {
2847                 DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id,
2848                         (void *)flow);
2849                 return 0;
2850         }
2851         return -rte_errno;
2852 }
2853
2854 /**
2855  * Delete specific filter.
2856  *
2857  * @param dev
2858  *   Pointer to Ethernet device.
2859  * @param fdir_filter
2860  *   Filter to be deleted.
2861  *
2862  * @return
2863  *   0 on success, a negative errno value otherwise and rte_errno is set.
2864  */
2865 static int
2866 mlx5_fdir_filter_delete(struct rte_eth_dev *dev,
2867                         const struct rte_eth_fdir_filter *fdir_filter)
2868 {
2869         struct priv *priv = dev->data->dev_private;
2870         struct mlx5_fdir attributes = {
2871                 .attr.group = 0,
2872         };
2873         struct mlx5_flow_parse parser = {
2874                 .create = 1,
2875                 .layer = HASH_RXQ_ETH,
2876         };
2877         struct rte_flow_error error;
2878         struct rte_flow *flow;
2879         unsigned int i;
2880         int ret;
2881
2882         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
2883         if (ret)
2884                 return ret;
2885         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
2886                                 attributes.actions, &error, &parser);
2887         if (ret)
2888                 goto exit;
2889         /*
2890          * Special case for drop action which is only set in the
2891          * specifications when the flow is created.  In this situation the
2892          * drop specification is missing.
2893          */
2894         if (parser.drop) {
2895                 struct ibv_flow_spec_action_drop *drop;
2896
2897                 drop = (void *)((uintptr_t)parser.queue[HASH_RXQ_ETH].ibv_attr +
2898                                 parser.queue[HASH_RXQ_ETH].offset);
2899                 *drop = (struct ibv_flow_spec_action_drop){
2900                         .type = IBV_FLOW_SPEC_ACTION_DROP,
2901                         .size = sizeof(struct ibv_flow_spec_action_drop),
2902                 };
2903                 parser.queue[HASH_RXQ_ETH].ibv_attr->num_of_specs++;
2904         }
2905         TAILQ_FOREACH(flow, &priv->flows, next) {
2906                 struct ibv_flow_attr *attr;
2907                 struct ibv_spec_header *attr_h;
2908                 void *spec;
2909                 struct ibv_flow_attr *flow_attr;
2910                 struct ibv_spec_header *flow_h;
2911                 void *flow_spec;
2912                 unsigned int specs_n;
2913
2914                 attr = parser.queue[HASH_RXQ_ETH].ibv_attr;
2915                 flow_attr = flow->frxq[HASH_RXQ_ETH].ibv_attr;
2916                 /* Compare first the attributes. */
2917                 if (memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
2918                         continue;
2919                 if (attr->num_of_specs == 0)
2920                         continue;
2921                 spec = (void *)((uintptr_t)attr +
2922                                 sizeof(struct ibv_flow_attr));
2923                 flow_spec = (void *)((uintptr_t)flow_attr +
2924                                      sizeof(struct ibv_flow_attr));
2925                 specs_n = RTE_MIN(attr->num_of_specs, flow_attr->num_of_specs);
2926                 for (i = 0; i != specs_n; ++i) {
2927                         attr_h = spec;
2928                         flow_h = flow_spec;
2929                         if (memcmp(spec, flow_spec,
2930                                    RTE_MIN(attr_h->size, flow_h->size)))
2931                                 goto wrong_flow;
2932                         spec = (void *)((uintptr_t)spec + attr_h->size);
2933                         flow_spec = (void *)((uintptr_t)flow_spec +
2934                                              flow_h->size);
2935                 }
2936                 /* At this point, the flow match. */
2937                 break;
2938 wrong_flow:
2939                 /* The flow does not match. */
2940                 continue;
2941         }
2942         ret = rte_errno; /* Save rte_errno before cleanup. */
2943         if (flow)
2944                 mlx5_flow_list_destroy(dev, &priv->flows, flow);
2945 exit:
2946         for (i = 0; i != hash_rxq_init_n; ++i) {
2947                 if (parser.queue[i].ibv_attr)
2948                         rte_free(parser.queue[i].ibv_attr);
2949         }
2950         rte_errno = ret; /* Restore rte_errno. */
2951         return -rte_errno;
2952 }
2953
2954 /**
2955  * Update queue for specific filter.
2956  *
2957  * @param dev
2958  *   Pointer to Ethernet device.
2959  * @param fdir_filter
2960  *   Filter to be updated.
2961  *
2962  * @return
2963  *   0 on success, a negative errno value otherwise and rte_errno is set.
2964  */
2965 static int
2966 mlx5_fdir_filter_update(struct rte_eth_dev *dev,
2967                         const struct rte_eth_fdir_filter *fdir_filter)
2968 {
2969         int ret;
2970
2971         ret = mlx5_fdir_filter_delete(dev, fdir_filter);
2972         if (ret)
2973                 return ret;
2974         return mlx5_fdir_filter_add(dev, fdir_filter);
2975 }
2976
2977 /**
2978  * Flush all filters.
2979  *
2980  * @param dev
2981  *   Pointer to Ethernet device.
2982  */
2983 static void
2984 mlx5_fdir_filter_flush(struct rte_eth_dev *dev)
2985 {
2986         struct priv *priv = dev->data->dev_private;
2987
2988         mlx5_flow_list_flush(dev, &priv->flows);
2989 }
2990
2991 /**
2992  * Get flow director information.
2993  *
2994  * @param dev
2995  *   Pointer to Ethernet device.
2996  * @param[out] fdir_info
2997  *   Resulting flow director information.
2998  */
2999 static void
3000 mlx5_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
3001 {
3002         struct priv *priv = dev->data->dev_private;
3003         struct rte_eth_fdir_masks *mask =
3004                 &priv->dev->data->dev_conf.fdir_conf.mask;
3005
3006         fdir_info->mode = priv->dev->data->dev_conf.fdir_conf.mode;
3007         fdir_info->guarant_spc = 0;
3008         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
3009         fdir_info->max_flexpayload = 0;
3010         fdir_info->flow_types_mask[0] = 0;
3011         fdir_info->flex_payload_unit = 0;
3012         fdir_info->max_flex_payload_segment_num = 0;
3013         fdir_info->flex_payload_limit = 0;
3014         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
3015 }
3016
3017 /**
3018  * Deal with flow director operations.
3019  *
3020  * @param dev
3021  *   Pointer to Ethernet device.
3022  * @param filter_op
3023  *   Operation to perform.
3024  * @param arg
3025  *   Pointer to operation-specific structure.
3026  *
3027  * @return
3028  *   0 on success, a negative errno value otherwise and rte_errno is set.
3029  */
3030 static int
3031 mlx5_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
3032                     void *arg)
3033 {
3034         struct priv *priv = dev->data->dev_private;
3035         enum rte_fdir_mode fdir_mode =
3036                 priv->dev->data->dev_conf.fdir_conf.mode;
3037
3038         if (filter_op == RTE_ETH_FILTER_NOP)
3039                 return 0;
3040         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
3041             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
3042                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
3043                         dev->data->port_id, fdir_mode);
3044                 rte_errno = EINVAL;
3045                 return -rte_errno;
3046         }
3047         switch (filter_op) {
3048         case RTE_ETH_FILTER_ADD:
3049                 return mlx5_fdir_filter_add(dev, arg);
3050         case RTE_ETH_FILTER_UPDATE:
3051                 return mlx5_fdir_filter_update(dev, arg);
3052         case RTE_ETH_FILTER_DELETE:
3053                 return mlx5_fdir_filter_delete(dev, arg);
3054         case RTE_ETH_FILTER_FLUSH:
3055                 mlx5_fdir_filter_flush(dev);
3056                 break;
3057         case RTE_ETH_FILTER_INFO:
3058                 mlx5_fdir_info_get(dev, arg);
3059                 break;
3060         default:
3061                 DRV_LOG(DEBUG, "port %u unknown operation %u",
3062                         dev->data->port_id, filter_op);
3063                 rte_errno = EINVAL;
3064                 return -rte_errno;
3065         }
3066         return 0;
3067 }
3068
3069 /**
3070  * Manage filter operations.
3071  *
3072  * @param dev
3073  *   Pointer to Ethernet device structure.
3074  * @param filter_type
3075  *   Filter type.
3076  * @param filter_op
3077  *   Operation to perform.
3078  * @param arg
3079  *   Pointer to operation-specific structure.
3080  *
3081  * @return
3082  *   0 on success, a negative errno value otherwise and rte_errno is set.
3083  */
3084 int
3085 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
3086                      enum rte_filter_type filter_type,
3087                      enum rte_filter_op filter_op,
3088                      void *arg)
3089 {
3090         switch (filter_type) {
3091         case RTE_ETH_FILTER_GENERIC:
3092                 if (filter_op != RTE_ETH_FILTER_GET) {
3093                         rte_errno = EINVAL;
3094                         return -rte_errno;
3095                 }
3096                 *(const void **)arg = &mlx5_flow_ops;
3097                 return 0;
3098         case RTE_ETH_FILTER_FDIR:
3099                 return mlx5_fdir_ctrl_func(dev, filter_op, arg);
3100         default:
3101                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
3102                         dev->data->port_id, filter_type);
3103                 rte_errno = ENOTSUP;
3104                 return -rte_errno;
3105         }
3106         return 0;
3107 }