drivers/net/mlx5/mlx5_flow.c

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