drivers/net/mlx5/mlx5_flow.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2016 6WIND S.A.
   5  *   Copyright 2016 Mellanox.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of 6WIND S.A. nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <sys/queue.h>
  35 #include <string.h>
  36
  37 /* Verbs header. */
  38 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  39 #ifdef PEDANTIC
  40 #pragma GCC diagnostic ignored "-Wpedantic"
  41 #endif
  42 #include <infiniband/verbs.h>
  43 #ifdef PEDANTIC
  44 #pragma GCC diagnostic error "-Wpedantic"
  45 #endif
  46
  47 #include <rte_ethdev.h>
  48 #include <rte_flow.h>
  49 #include <rte_flow_driver.h>
  50 #include <rte_malloc.h>
  51
  52 #include "mlx5.h"
  53 #include "mlx5_prm.h"
  54
  55 /* Define minimal priority for control plane flows. */
  56 #define MLX5_CTRL_FLOW_PRIORITY 4
  57
  58 /* Internet Protocol versions. */
  59 #define MLX5_IPV4 4
  60 #define MLX5_IPV6 6
  61
  62 #ifndef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
  63 struct ibv_counter_set_init_attr {
  64         int dummy;
  65 };
  66 struct ibv_flow_spec_counter_action {
  67         int dummy;
  68 };
  69 struct ibv_counter_set {
  70         int dummy;
  71 };
  72
  73 static inline int
  74 ibv_destroy_counter_set(struct ibv_counter_set *cs)
  75 {
  76         (void)cs;
  77         return -ENOTSUP;
  78 }
  79 #endif
  80
  81 /* Dev ops structure defined in mlx5.c */
  82 extern const struct eth_dev_ops mlx5_dev_ops;
  83 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  84
  85 static int
  86 mlx5_flow_create_eth(const struct rte_flow_item *item,
  87                      const void *default_mask,
  88                      void *data);
  89
  90 static int
  91 mlx5_flow_create_vlan(const struct rte_flow_item *item,
  92                       const void *default_mask,
  93                       void *data);
  94
  95 static int
  96 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
  97                       const void *default_mask,
  98                       void *data);
  99
 100 static int
 101 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
 102                       const void *default_mask,
 103                       void *data);
 104
 105 static int
 106 mlx5_flow_create_udp(const struct rte_flow_item *item,
 107                      const void *default_mask,
 108                      void *data);
 109
 110 static int
 111 mlx5_flow_create_tcp(const struct rte_flow_item *item,
 112                      const void *default_mask,
 113                      void *data);
 114
 115 static int
 116 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
 117                        const void *default_mask,
 118                        void *data);
 119
 120 struct mlx5_flow_parse;
 121
 122 static void
 123 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
 124                       unsigned int size);
 125
 126 static int
 127 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id);
 128
 129 static int
 130 mlx5_flow_create_count(struct priv *priv, struct mlx5_flow_parse *parser);
 131
 132 /* Hash RX queue types. */
 133 enum hash_rxq_type {
 134         HASH_RXQ_TCPV4,
 135         HASH_RXQ_UDPV4,
 136         HASH_RXQ_IPV4,
 137         HASH_RXQ_TCPV6,
 138         HASH_RXQ_UDPV6,
 139         HASH_RXQ_IPV6,
 140         HASH_RXQ_ETH,
 141 };
 142
 143 /* Initialization data for hash RX queue. */
 144 struct hash_rxq_init {
 145         uint64_t hash_fields; /* Fields that participate in the hash. */
 146         uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */
 147         unsigned int flow_priority; /* Flow priority to use. */
 148         unsigned int ip_version; /* Internet protocol. */
 149 };
 150
 151 /* Initialization data for hash RX queues. */
 152 const struct hash_rxq_init hash_rxq_init[] = {
 153         [HASH_RXQ_TCPV4] = {
 154                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 155                                 IBV_RX_HASH_DST_IPV4 |
 156                                 IBV_RX_HASH_SRC_PORT_TCP |
 157                                 IBV_RX_HASH_DST_PORT_TCP),
 158                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_TCP,
 159                 .flow_priority = 0,
 160                 .ip_version = MLX5_IPV4,
 161         },
 162         [HASH_RXQ_UDPV4] = {
 163                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 164                                 IBV_RX_HASH_DST_IPV4 |
 165                                 IBV_RX_HASH_SRC_PORT_UDP |
 166                                 IBV_RX_HASH_DST_PORT_UDP),
 167                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_UDP,
 168                 .flow_priority = 0,
 169                 .ip_version = MLX5_IPV4,
 170         },
 171         [HASH_RXQ_IPV4] = {
 172                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 173                                 IBV_RX_HASH_DST_IPV4),
 174                 .dpdk_rss_hf = (ETH_RSS_IPV4 |
 175                                 ETH_RSS_FRAG_IPV4),
 176                 .flow_priority = 1,
 177                 .ip_version = MLX5_IPV4,
 178         },
 179         [HASH_RXQ_TCPV6] = {
 180                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 181                                 IBV_RX_HASH_DST_IPV6 |
 182                                 IBV_RX_HASH_SRC_PORT_TCP |
 183                                 IBV_RX_HASH_DST_PORT_TCP),
 184                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_TCP,
 185                 .flow_priority = 0,
 186                 .ip_version = MLX5_IPV6,
 187         },
 188         [HASH_RXQ_UDPV6] = {
 189                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 190                                 IBV_RX_HASH_DST_IPV6 |
 191                                 IBV_RX_HASH_SRC_PORT_UDP |
 192                                 IBV_RX_HASH_DST_PORT_UDP),
 193                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_UDP,
 194                 .flow_priority = 0,
 195                 .ip_version = MLX5_IPV6,
 196         },
 197         [HASH_RXQ_IPV6] = {
 198                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 199                                 IBV_RX_HASH_DST_IPV6),
 200                 .dpdk_rss_hf = (ETH_RSS_IPV6 |
 201                                 ETH_RSS_FRAG_IPV6),
 202                 .flow_priority = 1,
 203                 .ip_version = MLX5_IPV6,
 204         },
 205         [HASH_RXQ_ETH] = {
 206                 .hash_fields = 0,
 207                 .dpdk_rss_hf = 0,
 208                 .flow_priority = 2,
 209         },
 210 };
 211
 212 /* Number of entries in hash_rxq_init[]. */
 213 const unsigned int hash_rxq_init_n = RTE_DIM(hash_rxq_init);
 214
 215 /** Structure for holding counter stats. */
 216 struct mlx5_flow_counter_stats {
 217         uint64_t hits; /**< Number of packets matched by the rule. */
 218         uint64_t bytes; /**< Number of bytes matched by the rule. */
 219 };
 220
 221 /** Structure for Drop queue. */
 222 struct mlx5_hrxq_drop {
 223         struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
 224         struct ibv_qp *qp; /**< Verbs queue pair. */
 225         struct ibv_wq *wq; /**< Verbs work queue. */
 226         struct ibv_cq *cq; /**< Verbs completion queue. */
 227 };
 228
 229 /* Flows structures. */
 230 struct mlx5_flow {
 231         uint64_t hash_fields; /**< Fields that participate in the hash. */
 232         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 233         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 234         struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */
 235 };
 236
 237 /* Drop flows structures. */
 238 struct mlx5_flow_drop {
 239         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 240         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 241 };
 242
 243 struct rte_flow {
 244         TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
 245         uint32_t mark:1; /**< Set if the flow is marked. */
 246         uint32_t drop:1; /**< Drop queue. */
 247         uint16_t queues_n; /**< Number of entries in queue[]. */
 248         uint16_t (*queues)[]; /**< Queues indexes to use. */
 249         struct rte_eth_rss_conf rss_conf; /**< RSS configuration */
 250         uint8_t rss_key[40]; /**< copy of the RSS key. */
 251         struct ibv_counter_set *cs; /**< Holds the counters for the rule. */
 252         struct mlx5_flow_counter_stats counter_stats;/**<The counter stats. */
 253         union {
 254                 struct mlx5_flow frxq[RTE_DIM(hash_rxq_init)];
 255                 /**< Flow with Rx queue. */
 256                 struct mlx5_flow_drop drxq; /**< Flow with drop Rx queue. */
 257         };
 258 };
 259
 260 /** Static initializer for items. */
 261 #define ITEMS(...) \
 262         (const enum rte_flow_item_type []){ \
 263                 __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
 264         }
 265
 266 /** Structure to generate a simple graph of layers supported by the NIC. */
 267 struct mlx5_flow_items {
 268         /** List of possible actions for these items. */
 269         const enum rte_flow_action_type *const actions;
 270         /** Bit-masks corresponding to the possibilities for the item. */
 271         const void *mask;
 272         /**
 273          * Default bit-masks to use when item->mask is not provided. When
 274          * \default_mask is also NULL, the full supported bit-mask (\mask) is
 275          * used instead.
 276          */
 277         const void *default_mask;
 278         /** Bit-masks size in bytes. */
 279         const unsigned int mask_sz;
 280         /**
 281          * Conversion function from rte_flow to NIC specific flow.
 282          *
 283          * @param item
 284          *   rte_flow item to convert.
 285          * @param default_mask
 286          *   Default bit-masks to use when item->mask is not provided.
 287          * @param data
 288          *   Internal structure to store the conversion.
 289          *
 290          * @return
 291          *   0 on success, negative value otherwise.
 292          */
 293         int (*convert)(const struct rte_flow_item *item,
 294                        const void *default_mask,
 295                        void *data);
 296         /** Size in bytes of the destination structure. */
 297         const unsigned int dst_sz;
 298         /** List of possible following items.  */
 299         const enum rte_flow_item_type *const items;
 300 };
 301
 302 /** Valid action for this PMD. */
 303 static const enum rte_flow_action_type valid_actions[] = {
 304         RTE_FLOW_ACTION_TYPE_DROP,
 305         RTE_FLOW_ACTION_TYPE_QUEUE,
 306         RTE_FLOW_ACTION_TYPE_MARK,
 307         RTE_FLOW_ACTION_TYPE_FLAG,
 308 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 309         RTE_FLOW_ACTION_TYPE_COUNT,
 310 #endif
 311         RTE_FLOW_ACTION_TYPE_END,
 312 };
 313
 314 /** Graph of supported items and associated actions. */
 315 static const struct mlx5_flow_items mlx5_flow_items[] = {
 316         [RTE_FLOW_ITEM_TYPE_END] = {
 317                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 318                                RTE_FLOW_ITEM_TYPE_VXLAN),
 319         },
 320         [RTE_FLOW_ITEM_TYPE_ETH] = {
 321                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN,
 322                                RTE_FLOW_ITEM_TYPE_IPV4,
 323                                RTE_FLOW_ITEM_TYPE_IPV6),
 324                 .actions = valid_actions,
 325                 .mask = &(const struct rte_flow_item_eth){
 326                         .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 327                         .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 328                         .type = -1,
 329                 },
 330                 .default_mask = &rte_flow_item_eth_mask,
 331                 .mask_sz = sizeof(struct rte_flow_item_eth),
 332                 .convert = mlx5_flow_create_eth,
 333                 .dst_sz = sizeof(struct ibv_flow_spec_eth),
 334         },
 335         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 336                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
 337                                RTE_FLOW_ITEM_TYPE_IPV6),
 338                 .actions = valid_actions,
 339                 .mask = &(const struct rte_flow_item_vlan){
 340                         .tci = -1,
 341                 },
 342                 .default_mask = &rte_flow_item_vlan_mask,
 343                 .mask_sz = sizeof(struct rte_flow_item_vlan),
 344                 .convert = mlx5_flow_create_vlan,
 345                 .dst_sz = 0,
 346         },
 347         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 348                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 349                                RTE_FLOW_ITEM_TYPE_TCP),
 350                 .actions = valid_actions,
 351                 .mask = &(const struct rte_flow_item_ipv4){
 352                         .hdr = {
 353                                 .src_addr = -1,
 354                                 .dst_addr = -1,
 355                                 .type_of_service = -1,
 356                                 .next_proto_id = -1,
 357                         },
 358                 },
 359                 .default_mask = &rte_flow_item_ipv4_mask,
 360                 .mask_sz = sizeof(struct rte_flow_item_ipv4),
 361                 .convert = mlx5_flow_create_ipv4,
 362                 .dst_sz = sizeof(struct ibv_flow_spec_ipv4_ext),
 363         },
 364         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 365                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 366                                RTE_FLOW_ITEM_TYPE_TCP),
 367                 .actions = valid_actions,
 368                 .mask = &(const struct rte_flow_item_ipv6){
 369                         .hdr = {
 370                                 .src_addr = {
 371                                         0xff, 0xff, 0xff, 0xff,
 372                                         0xff, 0xff, 0xff, 0xff,
 373                                         0xff, 0xff, 0xff, 0xff,
 374                                         0xff, 0xff, 0xff, 0xff,
 375                                 },
 376                                 .dst_addr = {
 377                                         0xff, 0xff, 0xff, 0xff,
 378                                         0xff, 0xff, 0xff, 0xff,
 379                                         0xff, 0xff, 0xff, 0xff,
 380                                         0xff, 0xff, 0xff, 0xff,
 381                                 },
 382                                 .vtc_flow = -1,
 383                                 .proto = -1,
 384                                 .hop_limits = -1,
 385                         },
 386                 },
 387                 .default_mask = &rte_flow_item_ipv6_mask,
 388                 .mask_sz = sizeof(struct rte_flow_item_ipv6),
 389                 .convert = mlx5_flow_create_ipv6,
 390                 .dst_sz = sizeof(struct ibv_flow_spec_ipv6),
 391         },
 392         [RTE_FLOW_ITEM_TYPE_UDP] = {
 393                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN),
 394                 .actions = valid_actions,
 395                 .mask = &(const struct rte_flow_item_udp){
 396                         .hdr = {
 397                                 .src_port = -1,
 398                                 .dst_port = -1,
 399                         },
 400                 },
 401                 .default_mask = &rte_flow_item_udp_mask,
 402                 .mask_sz = sizeof(struct rte_flow_item_udp),
 403                 .convert = mlx5_flow_create_udp,
 404                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 405         },
 406         [RTE_FLOW_ITEM_TYPE_TCP] = {
 407                 .actions = valid_actions,
 408                 .mask = &(const struct rte_flow_item_tcp){
 409                         .hdr = {
 410                                 .src_port = -1,
 411                                 .dst_port = -1,
 412                         },
 413                 },
 414                 .default_mask = &rte_flow_item_tcp_mask,
 415                 .mask_sz = sizeof(struct rte_flow_item_tcp),
 416                 .convert = mlx5_flow_create_tcp,
 417                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 418         },
 419         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 420                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH),
 421                 .actions = valid_actions,
 422                 .mask = &(const struct rte_flow_item_vxlan){
 423                         .vni = "\xff\xff\xff",
 424                 },
 425                 .default_mask = &rte_flow_item_vxlan_mask,
 426                 .mask_sz = sizeof(struct rte_flow_item_vxlan),
 427                 .convert = mlx5_flow_create_vxlan,
 428                 .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
 429         },
 430 };
 431
 432 /** Structure to pass to the conversion function. */
 433 struct mlx5_flow_parse {
 434         uint32_t inner; /**< Set once VXLAN is encountered. */
 435         uint32_t create:1;
 436         /**< Whether resources should remain after a validate. */
 437         uint32_t drop:1; /**< Target is a drop queue. */
 438         uint32_t mark:1; /**< Mark is present in the flow. */
 439         uint32_t count:1; /**< Count is present in the flow. */
 440         uint32_t mark_id; /**< Mark identifier. */
 441         uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */
 442         uint16_t queues_n; /**< Number of entries in queue[]. */
 443         struct rte_eth_rss_conf rss_conf; /**< RSS configuration */
 444         uint8_t rss_key[40]; /**< copy of the RSS key. */
 445         enum hash_rxq_type layer; /**< Last pattern layer detected. */
 446         struct ibv_counter_set *cs; /**< Holds the counter set for the rule */
 447         union {
 448                 struct {
 449                         struct ibv_flow_attr *ibv_attr;
 450                         /**< Pointer to Verbs attributes. */
 451                         unsigned int offset;
 452                         /**< Current position or total size of the attribute. */
 453                 } queue[RTE_DIM(hash_rxq_init)];
 454                 struct {
 455                         struct ibv_flow_attr *ibv_attr;
 456                         /**< Pointer to Verbs attributes. */
 457                         unsigned int offset;
 458                         /**< Current position or total size of the attribute. */
 459                 } drop_q;
 460         };
 461 };
 462
 463 static const struct rte_flow_ops mlx5_flow_ops = {
 464         .validate = mlx5_flow_validate,
 465         .create = mlx5_flow_create,
 466         .destroy = mlx5_flow_destroy,
 467         .flush = mlx5_flow_flush,
 468 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 469         .query = mlx5_flow_query,
 470 #else
 471         .query = NULL,
 472 #endif
 473         .isolate = mlx5_flow_isolate,
 474 };
 475
 476 /* Convert FDIR request to Generic flow. */
 477 struct mlx5_fdir {
 478         struct rte_flow_attr attr;
 479         struct rte_flow_action actions[2];
 480         struct rte_flow_item items[4];
 481         struct rte_flow_item_eth l2;
 482         struct rte_flow_item_eth l2_mask;
 483         union {
 484                 struct rte_flow_item_ipv4 ipv4;
 485                 struct rte_flow_item_ipv6 ipv6;
 486         } l3;
 487         union {
 488                 struct rte_flow_item_udp udp;
 489                 struct rte_flow_item_tcp tcp;
 490         } l4;
 491         struct rte_flow_action_queue queue;
 492 };
 493
 494 /* Verbs specification header. */
 495 struct ibv_spec_header {
 496         enum ibv_flow_spec_type type;
 497         uint16_t size;
 498 };
 499
 500 /**
 501  * Check support for a given item.
 502  *
 503  * @param item[in]
 504  *   Item specification.
 505  * @param mask[in]
 506  *   Bit-masks covering supported fields to compare with spec, last and mask in
 507  *   \item.
 508  * @param size
 509  *   Bit-Mask size in bytes.
 510  *
 511  * @return
 512  *   0 on success.
 513  */
 514 static int
 515 mlx5_flow_item_validate(const struct rte_flow_item *item,
 516                         const uint8_t *mask, unsigned int size)
 517 {
 518         int ret = 0;
 519
 520         if (!item->spec && (item->mask || item->last))
 521                 return -1;
 522         if (item->spec && !item->mask) {
 523                 unsigned int i;
 524                 const uint8_t *spec = item->spec;
 525
 526                 for (i = 0; i < size; ++i)
 527                         if ((spec[i] | mask[i]) != mask[i])
 528                                 return -1;
 529         }
 530         if (item->last && !item->mask) {
 531                 unsigned int i;
 532                 const uint8_t *spec = item->last;
 533
 534                 for (i = 0; i < size; ++i)
 535                         if ((spec[i] | mask[i]) != mask[i])
 536                                 return -1;
 537         }
 538         if (item->mask) {
 539                 unsigned int i;
 540                 const uint8_t *spec = item->mask;
 541
 542                 for (i = 0; i < size; ++i)
 543                         if ((spec[i] | mask[i]) != mask[i])
 544                                 return -1;
 545         }
 546         if (item->spec && item->last) {
 547                 uint8_t spec[size];
 548                 uint8_t last[size];
 549                 const uint8_t *apply = mask;
 550                 unsigned int i;
 551
 552                 if (item->mask)
 553                         apply = item->mask;
 554                 for (i = 0; i < size; ++i) {
 555                         spec[i] = ((const uint8_t *)item->spec)[i] & apply[i];
 556                         last[i] = ((const uint8_t *)item->last)[i] & apply[i];
 557                 }
 558                 ret = memcmp(spec, last, size);
 559         }
 560         return ret;
 561 }
 562
 563 /**
 564  * Copy the RSS configuration from the user ones.
 565  *
 566  * @param priv
 567  *   Pointer to private structure.
 568  * @param parser
 569  *   Internal parser structure.
 570  * @param rss_conf
 571  *   User RSS configuration to save.
 572  *
 573  * @return
 574  *   0 on success, errno value on failure.
 575  */
 576 static int
 577 priv_flow_convert_rss_conf(struct priv *priv,
 578                            struct mlx5_flow_parse *parser,
 579                            const struct rte_eth_rss_conf *rss_conf)
 580 {
 581         const struct rte_eth_rss_conf *rss =
 582                 rss_conf ? rss_conf : &priv->rss_conf;
 583
 584         if (rss->rss_key_len > 40)
 585                 return EINVAL;
 586         parser->rss_conf.rss_key_len = rss->rss_key_len;
 587         parser->rss_conf.rss_hf = rss->rss_hf;
 588         memcpy(parser->rss_key, rss->rss_key, rss->rss_key_len);
 589         parser->rss_conf.rss_key = parser->rss_key;
 590         return 0;
 591 }
 592
 593 /**
 594  * Extract attribute to the parser.
 595  *
 596  * @param priv
 597  *   Pointer to private structure.
 598  * @param[in] attr
 599  *   Flow rule attributes.
 600  * @param[out] error
 601  *   Perform verbose error reporting if not NULL.
 602  * @param[in, out] parser
 603  *   Internal parser structure.
 604  *
 605  * @return
 606  *   0 on success, a negative errno value otherwise and rte_errno is set.
 607  */
 608 static int
 609 priv_flow_convert_attributes(struct priv *priv,
 610                              const struct rte_flow_attr *attr,
 611                              struct rte_flow_error *error,
 612                              struct mlx5_flow_parse *parser)
 613 {
 614         (void)priv;
 615         (void)parser;
 616         if (attr->group) {
 617                 rte_flow_error_set(error, ENOTSUP,
 618                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 619                                    NULL,
 620                                    "groups are not supported");
 621                 return -rte_errno;
 622         }
 623         if (attr->priority && attr->priority != MLX5_CTRL_FLOW_PRIORITY) {
 624                 rte_flow_error_set(error, ENOTSUP,
 625                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 626                                    NULL,
 627                                    "priorities are not supported");
 628                 return -rte_errno;
 629         }
 630         if (attr->egress) {
 631                 rte_flow_error_set(error, ENOTSUP,
 632                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 633                                    NULL,
 634                                    "egress is not supported");
 635                 return -rte_errno;
 636         }
 637         if (!attr->ingress) {
 638                 rte_flow_error_set(error, ENOTSUP,
 639                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 640                                    NULL,
 641                                    "only ingress is supported");
 642                 return -rte_errno;
 643         }
 644         return 0;
 645 }
 646
 647 /**
 648  * Extract actions request to the parser.
 649  *
 650  * @param priv
 651  *   Pointer to private structure.
 652  * @param[in] actions
 653  *   Associated actions (list terminated by the END action).
 654  * @param[out] error
 655  *   Perform verbose error reporting if not NULL.
 656  * @param[in, out] parser
 657  *   Internal parser structure.
 658  *
 659  * @return
 660  *   0 on success, a negative errno value otherwise and rte_errno is set.
 661  */
 662 static int
 663 priv_flow_convert_actions(struct priv *priv,
 664                           const struct rte_flow_action actions[],
 665                           struct rte_flow_error *error,
 666                           struct mlx5_flow_parse *parser)
 667 {
 668         /*
 669          * Add default RSS configuration necessary for Verbs to create QP even
 670          * if no RSS is necessary.
 671          */
 672         priv_flow_convert_rss_conf(priv, parser,
 673                                    (const struct rte_eth_rss_conf *)
 674                                    &priv->rss_conf);
 675         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
 676                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
 677                         continue;
 678                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
 679                         parser->drop = 1;
 680                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
 681                         const struct rte_flow_action_queue *queue =
 682                                 (const struct rte_flow_action_queue *)
 683                                 actions->conf;
 684                         uint16_t n;
 685                         uint16_t found = 0;
 686
 687                         if (!queue || (queue->index > (priv->rxqs_n - 1)))
 688                                 goto exit_action_not_supported;
 689                         for (n = 0; n < parser->queues_n; ++n) {
 690                                 if (parser->queues[n] == queue->index) {
 691                                         found = 1;
 692                                         break;
 693                                 }
 694                         }
 695                         if (parser->queues_n > 1 && !found) {
 696                                 rte_flow_error_set(error, ENOTSUP,
 697                                            RTE_FLOW_ERROR_TYPE_ACTION,
 698                                            actions,
 699                                            "queue action not in RSS queues");
 700                                 return -rte_errno;
 701                         }
 702                         if (!found) {
 703                                 parser->queues_n = 1;
 704                                 parser->queues[0] = queue->index;
 705                         }
 706                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) {
 707                         const struct rte_flow_action_rss *rss =
 708                                 (const struct rte_flow_action_rss *)
 709                                 actions->conf;
 710                         uint16_t n;
 711
 712                         if (!rss || !rss->num) {
 713                                 rte_flow_error_set(error, EINVAL,
 714                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 715                                                    actions,
 716                                                    "no valid queues");
 717                                 return -rte_errno;
 718                         }
 719                         if (parser->queues_n == 1) {
 720                                 uint16_t found = 0;
 721
 722                                 assert(parser->queues_n);
 723                                 for (n = 0; n < rss->num; ++n) {
 724                                         if (parser->queues[0] ==
 725                                             rss->queue[n]) {
 726                                                 found = 1;
 727                                                 break;
 728                                         }
 729                                 }
 730                                 if (!found) {
 731                                         rte_flow_error_set(error, ENOTSUP,
 732                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 733                                                    actions,
 734                                                    "queue action not in RSS"
 735                                                    " queues");
 736                                         return -rte_errno;
 737                                 }
 738                         }
 739                         for (n = 0; n < rss->num; ++n) {
 740                                 if (rss->queue[n] >= priv->rxqs_n) {
 741                                         rte_flow_error_set(error, EINVAL,
 742                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 743                                                    actions,
 744                                                    "queue id > number of"
 745                                                    " queues");
 746                                         return -rte_errno;
 747                                 }
 748                         }
 749                         for (n = 0; n < rss->num; ++n)
 750                                 parser->queues[n] = rss->queue[n];
 751                         parser->queues_n = rss->num;
 752                         if (priv_flow_convert_rss_conf(priv, parser,
 753                                                        rss->rss_conf)) {
 754                                 rte_flow_error_set(error, EINVAL,
 755                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 756                                                    actions,
 757                                                    "wrong RSS configuration");
 758                                 return -rte_errno;
 759                         }
 760                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
 761                         const struct rte_flow_action_mark *mark =
 762                                 (const struct rte_flow_action_mark *)
 763                                 actions->conf;
 764
 765                         if (!mark) {
 766                                 rte_flow_error_set(error, EINVAL,
 767                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 768                                                    actions,
 769                                                    "mark must be defined");
 770                                 return -rte_errno;
 771                         } else if (mark->id >= MLX5_FLOW_MARK_MAX) {
 772                                 rte_flow_error_set(error, ENOTSUP,
 773                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 774                                                    actions,
 775                                                    "mark must be between 0"
 776                                                    " and 16777199");
 777                                 return -rte_errno;
 778                         }
 779                         parser->mark = 1;
 780                         parser->mark_id = mark->id;
 781                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) {
 782                         parser->mark = 1;
 783                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT &&
 784                            priv->counter_set_supported) {
 785                         parser->count = 1;
 786                 } else {
 787                         goto exit_action_not_supported;
 788                 }
 789         }
 790         if (parser->drop && parser->mark)
 791                 parser->mark = 0;
 792         if (!parser->queues_n && !parser->drop) {
 793                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
 794                                    NULL, "no valid action");
 795                 return -rte_errno;
 796         }
 797         return 0;
 798 exit_action_not_supported:
 799         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 800                            actions, "action not supported");
 801         return -rte_errno;
 802 }
 803
 804 /**
 805  * Validate items.
 806  *
 807  * @param priv
 808  *   Pointer to private structure.
 809  * @param[in] items
 810  *   Pattern specification (list terminated by the END pattern item).
 811  * @param[out] error
 812  *   Perform verbose error reporting if not NULL.
 813  * @param[in, out] parser
 814  *   Internal parser structure.
 815  *
 816  * @return
 817  *   0 on success, a negative errno value otherwise and rte_errno is set.
 818  */
 819 static int
 820 priv_flow_convert_items_validate(struct priv *priv,
 821                                  const struct rte_flow_item items[],
 822                                  struct rte_flow_error *error,
 823                                  struct mlx5_flow_parse *parser)
 824 {
 825         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 826         unsigned int i;
 827
 828         (void)priv;
 829         /* Initialise the offsets to start after verbs attribute. */
 830         if (parser->drop) {
 831                 parser->drop_q.offset = sizeof(struct ibv_flow_attr);
 832         } else {
 833                 for (i = 0; i != hash_rxq_init_n; ++i)
 834                         parser->queue[i].offset = sizeof(struct ibv_flow_attr);
 835         }
 836         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
 837                 const struct mlx5_flow_items *token = NULL;
 838                 unsigned int n;
 839                 int err;
 840
 841                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
 842                         continue;
 843                 for (i = 0;
 844                      cur_item->items &&
 845                      cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
 846                      ++i) {
 847                         if (cur_item->items[i] == items->type) {
 848                                 token = &mlx5_flow_items[items->type];
 849                                 break;
 850                         }
 851                 }
 852                 if (!token)
 853                         goto exit_item_not_supported;
 854                 cur_item = token;
 855                 err = mlx5_flow_item_validate(items,
 856                                               (const uint8_t *)cur_item->mask,
 857                                               cur_item->mask_sz);
 858                 if (err)
 859                         goto exit_item_not_supported;
 860                 if (items->type == RTE_FLOW_ITEM_TYPE_VXLAN) {
 861                         if (parser->inner) {
 862                                 rte_flow_error_set(error, ENOTSUP,
 863                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 864                                                    items,
 865                                                    "cannot recognize multiple"
 866                                                    " VXLAN encapsulations");
 867                                 return -rte_errno;
 868                         }
 869                         parser->inner = IBV_FLOW_SPEC_INNER;
 870                 }
 871                 if (parser->drop) {
 872                         parser->drop_q.offset += cur_item->dst_sz;
 873                 } else if (parser->queues_n == 1) {
 874                         parser->queue[HASH_RXQ_ETH].offset += cur_item->dst_sz;
 875                 } else {
 876                         for (n = 0; n != hash_rxq_init_n; ++n)
 877                                 parser->queue[n].offset += cur_item->dst_sz;
 878                 }
 879         }
 880         if (parser->mark) {
 881                 for (i = 0; i != hash_rxq_init_n; ++i)
 882                         parser->queue[i].offset +=
 883                                 sizeof(struct ibv_flow_spec_action_tag);
 884         }
 885         if (parser->count) {
 886                 unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
 887
 888                 if (parser->drop) {
 889                         parser->drop_q.offset += size;
 890                 } else {
 891                         for (i = 0; i != hash_rxq_init_n; ++i)
 892                                 parser->queue[i].offset += size;
 893                 }
 894         }
 895         return 0;
 896 exit_item_not_supported:
 897         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ITEM,
 898                            items, "item not supported");
 899         return -rte_errno;
 900 }
 901
 902 /**
 903  * Allocate memory space to store verbs flow attributes.
 904  *
 905  * @param priv
 906  *   Pointer to private structure.
 907  * @param[in] priority
 908  *   Flow priority.
 909  * @param[in] size
 910  *   Amount of byte to allocate.
 911  * @param[out] error
 912  *   Perform verbose error reporting if not NULL.
 913  *
 914  * @return
 915  *   A verbs flow attribute on success, NULL otherwise.
 916  */
 917 static struct ibv_flow_attr*
 918 priv_flow_convert_allocate(struct priv *priv,
 919                            unsigned int priority,
 920                            unsigned int size,
 921                            struct rte_flow_error *error)
 922 {
 923         struct ibv_flow_attr *ibv_attr;
 924
 925         (void)priv;
 926         ibv_attr = rte_calloc(__func__, 1, size, 0);
 927         if (!ibv_attr) {
 928                 rte_flow_error_set(error, ENOMEM,
 929                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 930                                    NULL,
 931                                    "cannot allocate verbs spec attributes.");
 932                 return NULL;
 933         }
 934         ibv_attr->priority = priority;
 935         return ibv_attr;
 936 }
 937
 938 /**
 939  * Finalise verbs flow attributes.
 940  *
 941  * @param priv
 942  *   Pointer to private structure.
 943  * @param[in, out] parser
 944  *   Internal parser structure.
 945  */
 946 static void
 947 priv_flow_convert_finalise(struct priv *priv, struct mlx5_flow_parse *parser)
 948 {
 949         const unsigned int ipv4 =
 950                 hash_rxq_init[parser->layer].ip_version == MLX5_IPV4;
 951         const enum hash_rxq_type hmin = ipv4 ? HASH_RXQ_TCPV4 : HASH_RXQ_TCPV6;
 952         const enum hash_rxq_type hmax = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 953         const enum hash_rxq_type ohmin = ipv4 ? HASH_RXQ_TCPV6 : HASH_RXQ_TCPV4;
 954         const enum hash_rxq_type ohmax = ipv4 ? HASH_RXQ_IPV6 : HASH_RXQ_IPV4;
 955         const enum hash_rxq_type ip = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
 956         unsigned int i;
 957
 958         (void)priv;
 959         if (parser->layer == HASH_RXQ_ETH) {
 960                 goto fill;
 961         } else {
 962                 /*
 963                  * This layer becomes useless as the pattern define under
 964                  * layers.
 965                  */
 966                 rte_free(parser->queue[HASH_RXQ_ETH].ibv_attr);
 967                 parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
 968         }
 969         /* Remove opposite kind of layer e.g. IPv6 if the pattern is IPv4. */
 970         for (i = ohmin; i != (ohmax + 1); ++i) {
 971                 if (!parser->queue[i].ibv_attr)
 972                         continue;
 973                 rte_free(parser->queue[i].ibv_attr);
 974                 parser->queue[i].ibv_attr = NULL;
 975         }
 976         /* Remove impossible flow according to the RSS configuration. */
 977         if (hash_rxq_init[parser->layer].dpdk_rss_hf &
 978             parser->rss_conf.rss_hf) {
 979                 /* Remove any other flow. */
 980                 for (i = hmin; i != (hmax + 1); ++i) {
 981                         if ((i == parser->layer) ||
 982                              (!parser->queue[i].ibv_attr))
 983                                 continue;
 984                         rte_free(parser->queue[i].ibv_attr);
 985                         parser->queue[i].ibv_attr = NULL;
 986                 }
 987         } else  if (!parser->queue[ip].ibv_attr) {
 988                 /* no RSS possible with the current configuration. */
 989                 parser->queues_n = 1;
 990                 return;
 991         }
 992 fill:
 993         /*
 994          * Fill missing layers in verbs specifications, or compute the correct
 995          * offset to allocate the memory space for the attributes and
 996          * specifications.
 997          */
 998         for (i = 0; i != hash_rxq_init_n - 1; ++i) {
 999                 union {
1000                         struct ibv_flow_spec_ipv4_ext ipv4;
1001                         struct ibv_flow_spec_ipv6 ipv6;
1002                         struct ibv_flow_spec_tcp_udp udp_tcp;
1003                 } specs;
1004                 void *dst;
1005                 uint16_t size;
1006
1007                 if (i == parser->layer)
1008                         continue;
1009                 if (parser->layer == HASH_RXQ_ETH) {
1010                         if (hash_rxq_init[i].ip_version == MLX5_IPV4) {
1011                                 size = sizeof(struct ibv_flow_spec_ipv4_ext);
1012                                 specs.ipv4 = (struct ibv_flow_spec_ipv4_ext){
1013                                         .type = IBV_FLOW_SPEC_IPV4_EXT,
1014                                         .size = size,
1015                                 };
1016                         } else {
1017                                 size = sizeof(struct ibv_flow_spec_ipv6);
1018                                 specs.ipv6 = (struct ibv_flow_spec_ipv6){
1019                                         .type = IBV_FLOW_SPEC_IPV6,
1020                                         .size = size,
1021                                 };
1022                         }
1023                         if (parser->queue[i].ibv_attr) {
1024                                 dst = (void *)((uintptr_t)
1025                                                parser->queue[i].ibv_attr +
1026                                                parser->queue[i].offset);
1027                                 memcpy(dst, &specs, size);
1028                                 ++parser->queue[i].ibv_attr->num_of_specs;
1029                         }
1030                         parser->queue[i].offset += size;
1031                 }
1032                 if ((i == HASH_RXQ_UDPV4) || (i == HASH_RXQ_TCPV4) ||
1033                     (i == HASH_RXQ_UDPV6) || (i == HASH_RXQ_TCPV6)) {
1034                         size = sizeof(struct ibv_flow_spec_tcp_udp);
1035                         specs.udp_tcp = (struct ibv_flow_spec_tcp_udp) {
1036                                 .type = ((i == HASH_RXQ_UDPV4 ||
1037                                           i == HASH_RXQ_UDPV6) ?
1038                                          IBV_FLOW_SPEC_UDP :
1039                                          IBV_FLOW_SPEC_TCP),
1040                                 .size = size,
1041                         };
1042                         if (parser->queue[i].ibv_attr) {
1043                                 dst = (void *)((uintptr_t)
1044                                                parser->queue[i].ibv_attr +
1045                                                parser->queue[i].offset);
1046                                 memcpy(dst, &specs, size);
1047                                 ++parser->queue[i].ibv_attr->num_of_specs;
1048                         }
1049                         parser->queue[i].offset += size;
1050                 }
1051         }
1052 }
1053
1054 /**
1055  * Validate and convert a flow supported by the NIC.
1056  *
1057  * @param priv
1058  *   Pointer to private structure.
1059  * @param[in] attr
1060  *   Flow rule attributes.
1061  * @param[in] pattern
1062  *   Pattern specification (list terminated by the END pattern item).
1063  * @param[in] actions
1064  *   Associated actions (list terminated by the END action).
1065  * @param[out] error
1066  *   Perform verbose error reporting if not NULL.
1067  * @param[in, out] parser
1068  *   Internal parser structure.
1069  *
1070  * @return
1071  *   0 on success, a negative errno value otherwise and rte_errno is set.
1072  */
1073 static int
1074 priv_flow_convert(struct priv *priv,
1075                   const struct rte_flow_attr *attr,
1076                   const struct rte_flow_item items[],
1077                   const struct rte_flow_action actions[],
1078                   struct rte_flow_error *error,
1079                   struct mlx5_flow_parse *parser)
1080 {
1081         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
1082         unsigned int i;
1083         int ret;
1084
1085         /* First step. Validate the attributes, items and actions. */
1086         *parser = (struct mlx5_flow_parse){
1087                 .create = parser->create,
1088                 .layer = HASH_RXQ_ETH,
1089                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1090         };
1091         ret = priv_flow_convert_attributes(priv, attr, error, parser);
1092         if (ret)
1093                 return ret;
1094         ret = priv_flow_convert_actions(priv, actions, error, parser);
1095         if (ret)
1096                 return ret;
1097         ret = priv_flow_convert_items_validate(priv, items, error, parser);
1098         if (ret)
1099                 return ret;
1100         priv_flow_convert_finalise(priv, parser);
1101         /*
1102          * Second step.
1103          * Allocate the memory space to store verbs specifications.
1104          */
1105         if (parser->drop) {
1106                 parser->drop_q.ibv_attr =
1107                         priv_flow_convert_allocate(priv, attr->priority,
1108                                                    parser->drop_q.offset,
1109                                                    error);
1110                 if (!parser->drop_q.ibv_attr)
1111                         return ENOMEM;
1112                 parser->drop_q.offset = sizeof(struct ibv_flow_attr);
1113         } else if (parser->queues_n == 1) {
1114                 unsigned int priority =
1115                         attr->priority +
1116                         hash_rxq_init[HASH_RXQ_ETH].flow_priority;
1117                 unsigned int offset = parser->queue[HASH_RXQ_ETH].offset;
1118
1119                 parser->queue[HASH_RXQ_ETH].ibv_attr =
1120                         priv_flow_convert_allocate(priv, priority,
1121                                                    offset, error);
1122                 if (!parser->queue[HASH_RXQ_ETH].ibv_attr)
1123                         return ENOMEM;
1124                 parser->queue[HASH_RXQ_ETH].offset =
1125                         sizeof(struct ibv_flow_attr);
1126         } else {
1127                 for (i = 0; i != hash_rxq_init_n; ++i) {
1128                         unsigned int priority =
1129                                 attr->priority +
1130                                 hash_rxq_init[i].flow_priority;
1131                         unsigned int offset;
1132
1133                         if (!(parser->rss_conf.rss_hf &
1134                               hash_rxq_init[i].dpdk_rss_hf) &&
1135                             (i != HASH_RXQ_ETH))
1136                                 continue;
1137                         offset = parser->queue[i].offset;
1138                         parser->queue[i].ibv_attr =
1139                                 priv_flow_convert_allocate(priv, priority,
1140                                                            offset, error);
1141                         if (!parser->queue[i].ibv_attr)
1142                                 goto exit_enomem;
1143                         parser->queue[i].offset = sizeof(struct ibv_flow_attr);
1144                 }
1145         }
1146         /* Third step. Conversion parse, fill the specifications. */
1147         parser->inner = 0;
1148         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
1149                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
1150                         continue;
1151                 cur_item = &mlx5_flow_items[items->type];
1152                 ret = cur_item->convert(items,
1153                                         (cur_item->default_mask ?
1154                                          cur_item->default_mask :
1155                                          cur_item->mask),
1156                                         parser);
1157                 if (ret) {
1158                         rte_flow_error_set(error, ret,
1159                                            RTE_FLOW_ERROR_TYPE_ITEM,
1160                                            items, "item not supported");
1161                         goto exit_free;
1162                 }
1163         }
1164         if (parser->mark)
1165                 mlx5_flow_create_flag_mark(parser, parser->mark_id);
1166         if (parser->count && parser->create) {
1167                 mlx5_flow_create_count(priv, parser);
1168                 if (!parser->cs)
1169                         goto exit_count_error;
1170         }
1171         /*
1172          * Last step. Complete missing specification to reach the RSS
1173          * configuration.
1174          */
1175         if (parser->drop) {
1176                 /*
1177                  * Drop queue priority needs to be adjusted to
1178                  * their most specific layer priority.
1179                  */
1180                 parser->drop_q.ibv_attr->priority =
1181                         attr->priority +
1182                         hash_rxq_init[parser->layer].flow_priority;
1183         } else if (parser->queues_n > 1) {
1184                 priv_flow_convert_finalise(priv, parser);
1185         } else {
1186                 /*
1187                  * Action queue have their priority overridden with
1188                  * Ethernet priority, this priority needs to be adjusted to
1189                  * their most specific layer priority.
1190                  */
1191                 parser->queue[HASH_RXQ_ETH].ibv_attr->priority =
1192                         attr->priority +
1193                         hash_rxq_init[parser->layer].flow_priority;
1194         }
1195 exit_free:
1196         /* Only verification is expected, all resources should be released. */
1197         if (!parser->create) {
1198                 if (parser->drop) {
1199                         rte_free(parser->drop_q.ibv_attr);
1200                         parser->drop_q.ibv_attr = NULL;
1201                 }
1202                 for (i = 0; i != hash_rxq_init_n; ++i) {
1203                         if (parser->queue[i].ibv_attr) {
1204                                 rte_free(parser->queue[i].ibv_attr);
1205                                 parser->queue[i].ibv_attr = NULL;
1206                         }
1207                 }
1208         }
1209         return ret;
1210 exit_enomem:
1211         for (i = 0; i != hash_rxq_init_n; ++i) {
1212                 if (parser->queue[i].ibv_attr) {
1213                         rte_free(parser->queue[i].ibv_attr);
1214                         parser->queue[i].ibv_attr = NULL;
1215                 }
1216         }
1217         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1218                            NULL, "cannot allocate verbs spec attributes.");
1219         return ret;
1220 exit_count_error:
1221         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1222                            NULL, "cannot create counter.");
1223         return rte_errno;
1224 }
1225
1226 /**
1227  * Copy the specification created into the flow.
1228  *
1229  * @param parser
1230  *   Internal parser structure.
1231  * @param src
1232  *   Create specification.
1233  * @param size
1234  *   Size in bytes of the specification to copy.
1235  */
1236 static void
1237 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
1238                       unsigned int size)
1239 {
1240         unsigned int i;
1241         void *dst;
1242
1243         if (parser->drop) {
1244                 dst = (void *)((uintptr_t)parser->drop_q.ibv_attr +
1245                                 parser->drop_q.offset);
1246                 memcpy(dst, src, size);
1247                 ++parser->drop_q.ibv_attr->num_of_specs;
1248                 parser->drop_q.offset += size;
1249                 return;
1250         }
1251         for (i = 0; i != hash_rxq_init_n; ++i) {
1252                 if (!parser->queue[i].ibv_attr)
1253                         continue;
1254                 /* Specification must be the same l3 type or none. */
1255                 if (parser->layer == HASH_RXQ_ETH ||
1256                     (hash_rxq_init[parser->layer].ip_version ==
1257                      hash_rxq_init[i].ip_version) ||
1258                     (hash_rxq_init[i].ip_version == 0)) {
1259                         dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1260                                         parser->queue[i].offset);
1261                         memcpy(dst, src, size);
1262                         ++parser->queue[i].ibv_attr->num_of_specs;
1263                         parser->queue[i].offset += size;
1264                 }
1265         }
1266 }
1267
1268 /**
1269  * Convert Ethernet item to Verbs specification.
1270  *
1271  * @param item[in]
1272  *   Item specification.
1273  * @param default_mask[in]
1274  *   Default bit-masks to use when item->mask is not provided.
1275  * @param data[in, out]
1276  *   User structure.
1277  */
1278 static int
1279 mlx5_flow_create_eth(const struct rte_flow_item *item,
1280                      const void *default_mask,
1281                      void *data)
1282 {
1283         const struct rte_flow_item_eth *spec = item->spec;
1284         const struct rte_flow_item_eth *mask = item->mask;
1285         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1286         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1287         struct ibv_flow_spec_eth eth = {
1288                 .type = parser->inner | IBV_FLOW_SPEC_ETH,
1289                 .size = eth_size,
1290         };
1291
1292         /* Don't update layer for the inner pattern. */
1293         if (!parser->inner)
1294                 parser->layer = HASH_RXQ_ETH;
1295         if (spec) {
1296                 unsigned int i;
1297
1298                 if (!mask)
1299                         mask = default_mask;
1300                 memcpy(&eth.val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
1301                 memcpy(&eth.val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
1302                 eth.val.ether_type = spec->type;
1303                 memcpy(&eth.mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
1304                 memcpy(&eth.mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
1305                 eth.mask.ether_type = mask->type;
1306                 /* Remove unwanted bits from values. */
1307                 for (i = 0; i < ETHER_ADDR_LEN; ++i) {
1308                         eth.val.dst_mac[i] &= eth.mask.dst_mac[i];
1309                         eth.val.src_mac[i] &= eth.mask.src_mac[i];
1310                 }
1311                 eth.val.ether_type &= eth.mask.ether_type;
1312         }
1313         mlx5_flow_create_copy(parser, &eth, eth_size);
1314         return 0;
1315 }
1316
1317 /**
1318  * Convert VLAN item to Verbs specification.
1319  *
1320  * @param item[in]
1321  *   Item specification.
1322  * @param default_mask[in]
1323  *   Default bit-masks to use when item->mask is not provided.
1324  * @param data[in, out]
1325  *   User structure.
1326  */
1327 static int
1328 mlx5_flow_create_vlan(const struct rte_flow_item *item,
1329                       const void *default_mask,
1330                       void *data)
1331 {
1332         const struct rte_flow_item_vlan *spec = item->spec;
1333         const struct rte_flow_item_vlan *mask = item->mask;
1334         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1335         struct ibv_flow_spec_eth *eth;
1336         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1337
1338         if (spec) {
1339                 unsigned int i;
1340                 if (!mask)
1341                         mask = default_mask;
1342
1343                 if (parser->drop) {
1344                         eth = (void *)((uintptr_t)parser->drop_q.ibv_attr +
1345                                        parser->drop_q.offset - eth_size);
1346                         eth->val.vlan_tag = spec->tci;
1347                         eth->mask.vlan_tag = mask->tci;
1348                         eth->val.vlan_tag &= eth->mask.vlan_tag;
1349                         return 0;
1350                 }
1351                 for (i = 0; i != hash_rxq_init_n; ++i) {
1352                         if (!parser->queue[i].ibv_attr)
1353                                 continue;
1354
1355                         eth = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1356                                        parser->queue[i].offset - eth_size);
1357                         eth->val.vlan_tag = spec->tci;
1358                         eth->mask.vlan_tag = mask->tci;
1359                         eth->val.vlan_tag &= eth->mask.vlan_tag;
1360                 }
1361         }
1362         return 0;
1363 }
1364
1365 /**
1366  * Convert IPv4 item to Verbs specification.
1367  *
1368  * @param item[in]
1369  *   Item specification.
1370  * @param default_mask[in]
1371  *   Default bit-masks to use when item->mask is not provided.
1372  * @param data[in, out]
1373  *   User structure.
1374  */
1375 static int
1376 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
1377                       const void *default_mask,
1378                       void *data)
1379 {
1380         const struct rte_flow_item_ipv4 *spec = item->spec;
1381         const struct rte_flow_item_ipv4 *mask = item->mask;
1382         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1383         unsigned int ipv4_size = sizeof(struct ibv_flow_spec_ipv4_ext);
1384         struct ibv_flow_spec_ipv4_ext ipv4 = {
1385                 .type = parser->inner | IBV_FLOW_SPEC_IPV4_EXT,
1386                 .size = ipv4_size,
1387         };
1388
1389         /* Don't update layer for the inner pattern. */
1390         if (!parser->inner)
1391                 parser->layer = HASH_RXQ_IPV4;
1392         if (spec) {
1393                 if (!mask)
1394                         mask = default_mask;
1395                 ipv4.val = (struct ibv_flow_ipv4_ext_filter){
1396                         .src_ip = spec->hdr.src_addr,
1397                         .dst_ip = spec->hdr.dst_addr,
1398                         .proto = spec->hdr.next_proto_id,
1399                         .tos = spec->hdr.type_of_service,
1400                 };
1401                 ipv4.mask = (struct ibv_flow_ipv4_ext_filter){
1402                         .src_ip = mask->hdr.src_addr,
1403                         .dst_ip = mask->hdr.dst_addr,
1404                         .proto = mask->hdr.next_proto_id,
1405                         .tos = mask->hdr.type_of_service,
1406                 };
1407                 /* Remove unwanted bits from values. */
1408                 ipv4.val.src_ip &= ipv4.mask.src_ip;
1409                 ipv4.val.dst_ip &= ipv4.mask.dst_ip;
1410                 ipv4.val.proto &= ipv4.mask.proto;
1411                 ipv4.val.tos &= ipv4.mask.tos;
1412         }
1413         mlx5_flow_create_copy(parser, &ipv4, ipv4_size);
1414         return 0;
1415 }
1416
1417 /**
1418  * Convert IPv6 item to Verbs specification.
1419  *
1420  * @param item[in]
1421  *   Item specification.
1422  * @param default_mask[in]
1423  *   Default bit-masks to use when item->mask is not provided.
1424  * @param data[in, out]
1425  *   User structure.
1426  */
1427 static int
1428 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
1429                       const void *default_mask,
1430                       void *data)
1431 {
1432         const struct rte_flow_item_ipv6 *spec = item->spec;
1433         const struct rte_flow_item_ipv6 *mask = item->mask;
1434         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1435         unsigned int ipv6_size = sizeof(struct ibv_flow_spec_ipv6);
1436         struct ibv_flow_spec_ipv6 ipv6 = {
1437                 .type = parser->inner | IBV_FLOW_SPEC_IPV6,
1438                 .size = ipv6_size,
1439         };
1440
1441         /* Don't update layer for the inner pattern. */
1442         if (!parser->inner)
1443                 parser->layer = HASH_RXQ_IPV6;
1444         if (spec) {
1445                 unsigned int i;
1446
1447                 if (!mask)
1448                         mask = default_mask;
1449                 memcpy(&ipv6.val.src_ip, spec->hdr.src_addr,
1450                        RTE_DIM(ipv6.val.src_ip));
1451                 memcpy(&ipv6.val.dst_ip, spec->hdr.dst_addr,
1452                        RTE_DIM(ipv6.val.dst_ip));
1453                 memcpy(&ipv6.mask.src_ip, mask->hdr.src_addr,
1454                        RTE_DIM(ipv6.mask.src_ip));
1455                 memcpy(&ipv6.mask.dst_ip, mask->hdr.dst_addr,
1456                        RTE_DIM(ipv6.mask.dst_ip));
1457                 ipv6.mask.flow_label = mask->hdr.vtc_flow;
1458                 ipv6.mask.next_hdr = mask->hdr.proto;
1459                 ipv6.mask.hop_limit = mask->hdr.hop_limits;
1460                 /* Remove unwanted bits from values. */
1461                 for (i = 0; i < RTE_DIM(ipv6.val.src_ip); ++i) {
1462                         ipv6.val.src_ip[i] &= ipv6.mask.src_ip[i];
1463                         ipv6.val.dst_ip[i] &= ipv6.mask.dst_ip[i];
1464                 }
1465                 ipv6.val.flow_label &= ipv6.mask.flow_label;
1466                 ipv6.val.next_hdr &= ipv6.mask.next_hdr;
1467                 ipv6.val.hop_limit &= ipv6.mask.hop_limit;
1468         }
1469         mlx5_flow_create_copy(parser, &ipv6, ipv6_size);
1470         return 0;
1471 }
1472
1473 /**
1474  * Convert UDP item to Verbs specification.
1475  *
1476  * @param item[in]
1477  *   Item specification.
1478  * @param default_mask[in]
1479  *   Default bit-masks to use when item->mask is not provided.
1480  * @param data[in, out]
1481  *   User structure.
1482  */
1483 static int
1484 mlx5_flow_create_udp(const struct rte_flow_item *item,
1485                      const void *default_mask,
1486                      void *data)
1487 {
1488         const struct rte_flow_item_udp *spec = item->spec;
1489         const struct rte_flow_item_udp *mask = item->mask;
1490         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1491         unsigned int udp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1492         struct ibv_flow_spec_tcp_udp udp = {
1493                 .type = parser->inner | IBV_FLOW_SPEC_UDP,
1494                 .size = udp_size,
1495         };
1496
1497         /* Don't update layer for the inner pattern. */
1498         if (!parser->inner) {
1499                 if (parser->layer == HASH_RXQ_IPV4)
1500                         parser->layer = HASH_RXQ_UDPV4;
1501                 else
1502                         parser->layer = HASH_RXQ_UDPV6;
1503         }
1504         if (spec) {
1505                 if (!mask)
1506                         mask = default_mask;
1507                 udp.val.dst_port = spec->hdr.dst_port;
1508                 udp.val.src_port = spec->hdr.src_port;
1509                 udp.mask.dst_port = mask->hdr.dst_port;
1510                 udp.mask.src_port = mask->hdr.src_port;
1511                 /* Remove unwanted bits from values. */
1512                 udp.val.src_port &= udp.mask.src_port;
1513                 udp.val.dst_port &= udp.mask.dst_port;
1514         }
1515         mlx5_flow_create_copy(parser, &udp, udp_size);
1516         return 0;
1517 }
1518
1519 /**
1520  * Convert TCP item to Verbs specification.
1521  *
1522  * @param item[in]
1523  *   Item specification.
1524  * @param default_mask[in]
1525  *   Default bit-masks to use when item->mask is not provided.
1526  * @param data[in, out]
1527  *   User structure.
1528  */
1529 static int
1530 mlx5_flow_create_tcp(const struct rte_flow_item *item,
1531                      const void *default_mask,
1532                      void *data)
1533 {
1534         const struct rte_flow_item_tcp *spec = item->spec;
1535         const struct rte_flow_item_tcp *mask = item->mask;
1536         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1537         unsigned int tcp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1538         struct ibv_flow_spec_tcp_udp tcp = {
1539                 .type = parser->inner | IBV_FLOW_SPEC_TCP,
1540                 .size = tcp_size,
1541         };
1542
1543         /* Don't update layer for the inner pattern. */
1544         if (!parser->inner) {
1545                 if (parser->layer == HASH_RXQ_IPV4)
1546                         parser->layer = HASH_RXQ_TCPV4;
1547                 else
1548                         parser->layer = HASH_RXQ_TCPV6;
1549         }
1550         if (spec) {
1551                 if (!mask)
1552                         mask = default_mask;
1553                 tcp.val.dst_port = spec->hdr.dst_port;
1554                 tcp.val.src_port = spec->hdr.src_port;
1555                 tcp.mask.dst_port = mask->hdr.dst_port;
1556                 tcp.mask.src_port = mask->hdr.src_port;
1557                 /* Remove unwanted bits from values. */
1558                 tcp.val.src_port &= tcp.mask.src_port;
1559                 tcp.val.dst_port &= tcp.mask.dst_port;
1560         }
1561         mlx5_flow_create_copy(parser, &tcp, tcp_size);
1562         return 0;
1563 }
1564
1565 /**
1566  * Convert VXLAN item to Verbs specification.
1567  *
1568  * @param item[in]
1569  *   Item specification.
1570  * @param default_mask[in]
1571  *   Default bit-masks to use when item->mask is not provided.
1572  * @param data[in, out]
1573  *   User structure.
1574  */
1575 static int
1576 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
1577                        const void *default_mask,
1578                        void *data)
1579 {
1580         const struct rte_flow_item_vxlan *spec = item->spec;
1581         const struct rte_flow_item_vxlan *mask = item->mask;
1582         struct mlx5_flow_parse *parser = (struct mlx5_flow_parse *)data;
1583         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1584         struct ibv_flow_spec_tunnel vxlan = {
1585                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1586                 .size = size,
1587         };
1588         union vni {
1589                 uint32_t vlan_id;
1590                 uint8_t vni[4];
1591         } id;
1592
1593         id.vni[0] = 0;
1594         parser->inner = IBV_FLOW_SPEC_INNER;
1595         if (spec) {
1596                 if (!mask)
1597                         mask = default_mask;
1598                 memcpy(&id.vni[1], spec->vni, 3);
1599                 vxlan.val.tunnel_id = id.vlan_id;
1600                 memcpy(&id.vni[1], mask->vni, 3);
1601                 vxlan.mask.tunnel_id = id.vlan_id;
1602                 /* Remove unwanted bits from values. */
1603                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1604         }
1605         /*
1606          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1607          * layer is defined in the Verbs specification it is interpreted as
1608          * wildcard and all packets will match this rule, if it follows a full
1609          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1610          * before will also match this rule.
1611          * To avoid such situation, VNI 0 is currently refused.
1612          */
1613         if (!vxlan.val.tunnel_id)
1614                 return EINVAL;
1615         mlx5_flow_create_copy(parser, &vxlan, size);
1616         return 0;
1617 }
1618
1619 /**
1620  * Convert mark/flag action to Verbs specification.
1621  *
1622  * @param parser
1623  *   Internal parser structure.
1624  * @param mark_id
1625  *   Mark identifier.
1626  */
1627 static int
1628 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id)
1629 {
1630         unsigned int size = sizeof(struct ibv_flow_spec_action_tag);
1631         struct ibv_flow_spec_action_tag tag = {
1632                 .type = IBV_FLOW_SPEC_ACTION_TAG,
1633                 .size = size,
1634                 .tag_id = mlx5_flow_mark_set(mark_id),
1635         };
1636
1637         assert(parser->mark);
1638         mlx5_flow_create_copy(parser, &tag, size);
1639         return 0;
1640 }
1641
1642 /**
1643  * Convert count action to Verbs specification.
1644  *
1645  * @param priv
1646  *   Pointer to private structure.
1647  * @param parser
1648  *   Pointer to MLX5 flow parser structure.
1649  *
1650  * @return
1651  *   0 on success, errno value on failure.
1652  */
1653 static int
1654 mlx5_flow_create_count(struct priv *priv __rte_unused,
1655                        struct mlx5_flow_parse *parser __rte_unused)
1656 {
1657 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
1658         unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
1659         struct ibv_counter_set_init_attr init_attr = {0};
1660         struct ibv_flow_spec_counter_action counter = {
1661                 .type = IBV_FLOW_SPEC_ACTION_COUNT,
1662                 .size = size,
1663                 .counter_set_handle = 0,
1664         };
1665
1666         init_attr.counter_set_id = 0;
1667         parser->cs = ibv_create_counter_set(priv->ctx, &init_attr);
1668         if (!parser->cs)
1669                 return EINVAL;
1670         counter.counter_set_handle = parser->cs->handle;
1671         mlx5_flow_create_copy(parser, &counter, size);
1672 #endif
1673         return 0;
1674 }
1675
1676 /**
1677  * Complete flow rule creation with a drop queue.
1678  *
1679  * @param priv
1680  *   Pointer to private structure.
1681  * @param parser
1682  *   Internal parser structure.
1683  * @param flow
1684  *   Pointer to the rte_flow.
1685  * @param[out] error
1686  *   Perform verbose error reporting if not NULL.
1687  *
1688  * @return
1689  *   0 on success, errno value on failure.
1690  */
1691 static int
1692 priv_flow_create_action_queue_drop(struct priv *priv,
1693                                    struct mlx5_flow_parse *parser,
1694                                    struct rte_flow *flow,
1695                                    struct rte_flow_error *error)
1696 {
1697         struct ibv_flow_spec_action_drop *drop;
1698         unsigned int size = sizeof(struct ibv_flow_spec_action_drop);
1699         int err = 0;
1700
1701         assert(priv->pd);
1702         assert(priv->ctx);
1703         flow->drop = 1;
1704         drop = (void *)((uintptr_t)parser->drop_q.ibv_attr +
1705                         parser->drop_q.offset);
1706         *drop = (struct ibv_flow_spec_action_drop){
1707                         .type = IBV_FLOW_SPEC_ACTION_DROP,
1708                         .size = size,
1709         };
1710         ++parser->drop_q.ibv_attr->num_of_specs;
1711         parser->drop_q.offset += size;
1712         flow->drxq.ibv_attr = parser->drop_q.ibv_attr;
1713         if (parser->count)
1714                 flow->cs = parser->cs;
1715         if (!priv->dev->data->dev_started)
1716                 return 0;
1717         parser->drop_q.ibv_attr = NULL;
1718         flow->drxq.ibv_flow = ibv_create_flow(priv->flow_drop_queue->qp,
1719                                               flow->drxq.ibv_attr);
1720         if (!flow->drxq.ibv_flow) {
1721                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
1722                                    NULL, "flow rule creation failure");
1723                 err = ENOMEM;
1724                 goto error;
1725         }
1726         return 0;
1727 error:
1728         assert(flow);
1729         if (flow->drxq.ibv_flow) {
1730                 claim_zero(ibv_destroy_flow(flow->drxq.ibv_flow));
1731                 flow->drxq.ibv_flow = NULL;
1732         }
1733         if (flow->drxq.ibv_attr) {
1734                 rte_free(flow->drxq.ibv_attr);
1735                 flow->drxq.ibv_attr = NULL;
1736         }
1737         if (flow->cs) {
1738                 claim_zero(ibv_destroy_counter_set(flow->cs));
1739                 flow->cs = NULL;
1740                 parser->cs = NULL;
1741         }
1742         return err;
1743 }
1744
1745 /**
1746  * Create hash Rx queues when RSS is enabled.
1747  *
1748  * @param priv
1749  *   Pointer to private structure.
1750  * @param parser
1751  *   Internal parser structure.
1752  * @param flow
1753  *   Pointer to the rte_flow.
1754  * @param[out] error
1755  *   Perform verbose error reporting if not NULL.
1756  *
1757  * @return
1758  *   0 on success, a errno value otherwise and rte_errno is set.
1759  */
1760 static int
1761 priv_flow_create_action_queue_rss(struct priv *priv,
1762                                   struct mlx5_flow_parse *parser,
1763                                   struct rte_flow *flow,
1764                                   struct rte_flow_error *error)
1765 {
1766         unsigned int i;
1767
1768         for (i = 0; i != hash_rxq_init_n; ++i) {
1769                 uint64_t hash_fields;
1770
1771                 if (!parser->queue[i].ibv_attr)
1772                         continue;
1773                 flow->frxq[i].ibv_attr = parser->queue[i].ibv_attr;
1774                 parser->queue[i].ibv_attr = NULL;
1775                 hash_fields = hash_rxq_init[i].hash_fields;
1776                 if (!priv->dev->data->dev_started)
1777                         continue;
1778                 flow->frxq[i].hrxq =
1779                         mlx5_priv_hrxq_get(priv,
1780                                            parser->rss_conf.rss_key,
1781                                            parser->rss_conf.rss_key_len,
1782                                            hash_fields,
1783                                            parser->queues,
1784                                            parser->queues_n);
1785                 if (flow->frxq[i].hrxq)
1786                         continue;
1787                 flow->frxq[i].hrxq =
1788                         mlx5_priv_hrxq_new(priv,
1789                                            parser->rss_conf.rss_key,
1790                                            parser->rss_conf.rss_key_len,
1791                                            hash_fields,
1792                                            parser->queues,
1793                                            parser->queues_n);
1794                 if (!flow->frxq[i].hrxq) {
1795                         rte_flow_error_set(error, ENOMEM,
1796                                            RTE_FLOW_ERROR_TYPE_HANDLE,
1797                                            NULL, "cannot create hash rxq");
1798                         return ENOMEM;
1799                 }
1800         }
1801         return 0;
1802 }
1803
1804 /**
1805  * Complete flow rule creation.
1806  *
1807  * @param priv
1808  *   Pointer to private structure.
1809  * @param parser
1810  *   Internal parser structure.
1811  * @param flow
1812  *   Pointer to the rte_flow.
1813  * @param[out] error
1814  *   Perform verbose error reporting if not NULL.
1815  *
1816  * @return
1817  *   0 on success, a errno value otherwise and rte_errno is set.
1818  */
1819 static int
1820 priv_flow_create_action_queue(struct priv *priv,
1821                               struct mlx5_flow_parse *parser,
1822                               struct rte_flow *flow,
1823                               struct rte_flow_error *error)
1824 {
1825         int err = 0;
1826         unsigned int i;
1827
1828         assert(priv->pd);
1829         assert(priv->ctx);
1830         assert(!parser->drop);
1831         err = priv_flow_create_action_queue_rss(priv, parser, flow, error);
1832         if (err)
1833                 goto error;
1834         if (parser->count)
1835                 flow->cs = parser->cs;
1836         if (!priv->dev->data->dev_started)
1837                 return 0;
1838         for (i = 0; i != hash_rxq_init_n; ++i) {
1839                 if (!flow->frxq[i].hrxq)
1840                         continue;
1841                 flow->frxq[i].ibv_flow =
1842                         ibv_create_flow(flow->frxq[i].hrxq->qp,
1843                                         flow->frxq[i].ibv_attr);
1844                 if (!flow->frxq[i].ibv_flow) {
1845                         rte_flow_error_set(error, ENOMEM,
1846                                            RTE_FLOW_ERROR_TYPE_HANDLE,
1847                                            NULL, "flow rule creation failure");
1848                         err = ENOMEM;
1849                         goto error;
1850                 }
1851                 DEBUG("%p type %d QP %p ibv_flow %p",
1852                       (void *)flow, i,
1853                       (void *)flow->frxq[i].hrxq,
1854                       (void *)flow->frxq[i].ibv_flow);
1855         }
1856         for (i = 0; i != parser->queues_n; ++i) {
1857                 struct mlx5_rxq_data *q =
1858                         (*priv->rxqs)[parser->queues[i]];
1859
1860                 q->mark |= parser->mark;
1861         }
1862         return 0;
1863 error:
1864         assert(flow);
1865         for (i = 0; i != hash_rxq_init_n; ++i) {
1866                 if (flow->frxq[i].ibv_flow) {
1867                         struct ibv_flow *ibv_flow = flow->frxq[i].ibv_flow;
1868
1869                         claim_zero(ibv_destroy_flow(ibv_flow));
1870                 }
1871                 if (flow->frxq[i].hrxq)
1872                         mlx5_priv_hrxq_release(priv, flow->frxq[i].hrxq);
1873                 if (flow->frxq[i].ibv_attr)
1874                         rte_free(flow->frxq[i].ibv_attr);
1875         }
1876         if (flow->cs) {
1877                 claim_zero(ibv_destroy_counter_set(flow->cs));
1878                 flow->cs = NULL;
1879                 parser->cs = NULL;
1880         }
1881         return err;
1882 }
1883
1884 /**
1885  * Convert a flow.
1886  *
1887  * @param priv
1888  *   Pointer to private structure.
1889  * @param list
1890  *   Pointer to a TAILQ flow list.
1891  * @param[in] attr
1892  *   Flow rule attributes.
1893  * @param[in] pattern
1894  *   Pattern specification (list terminated by the END pattern item).
1895  * @param[in] actions
1896  *   Associated actions (list terminated by the END action).
1897  * @param[out] error
1898  *   Perform verbose error reporting if not NULL.
1899  *
1900  * @return
1901  *   A flow on success, NULL otherwise.
1902  */
1903 static struct rte_flow *
1904 priv_flow_create(struct priv *priv,
1905                  struct mlx5_flows *list,
1906                  const struct rte_flow_attr *attr,
1907                  const struct rte_flow_item items[],
1908                  const struct rte_flow_action actions[],
1909                  struct rte_flow_error *error)
1910 {
1911         struct mlx5_flow_parse parser = { .create = 1, };
1912         struct rte_flow *flow = NULL;
1913         unsigned int i;
1914         int err;
1915
1916         err = priv_flow_convert(priv, attr, items, actions, error, &parser);
1917         if (err)
1918                 goto exit;
1919         flow = rte_calloc(__func__, 1,
1920                           sizeof(*flow) + parser.queues_n * sizeof(uint16_t),
1921                           0);
1922         if (!flow) {
1923                 rte_flow_error_set(error, ENOMEM,
1924                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1925                                    NULL,
1926                                    "cannot allocate flow memory");
1927                 return NULL;
1928         }
1929         /* Copy queues configuration. */
1930         flow->queues = (uint16_t (*)[])(flow + 1);
1931         memcpy(flow->queues, parser.queues, parser.queues_n * sizeof(uint16_t));
1932         flow->queues_n = parser.queues_n;
1933         flow->mark = parser.mark;
1934         /* Copy RSS configuration. */
1935         flow->rss_conf = parser.rss_conf;
1936         flow->rss_conf.rss_key = flow->rss_key;
1937         memcpy(flow->rss_key, parser.rss_key, parser.rss_conf.rss_key_len);
1938         /* finalise the flow. */
1939         if (parser.drop)
1940                 err = priv_flow_create_action_queue_drop(priv, &parser, flow,
1941                                                          error);
1942         else
1943                 err = priv_flow_create_action_queue(priv, &parser, flow, error);
1944         if (err)
1945                 goto exit;
1946         TAILQ_INSERT_TAIL(list, flow, next);
1947         DEBUG("Flow created %p", (void *)flow);
1948         return flow;
1949 exit:
1950         if (parser.drop) {
1951                 rte_free(parser.drop_q.ibv_attr);
1952         } else {
1953                 for (i = 0; i != hash_rxq_init_n; ++i) {
1954                         if (parser.queue[i].ibv_attr)
1955                                 rte_free(parser.queue[i].ibv_attr);
1956                 }
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 priv *priv = dev->data->dev_private;
1976         int ret;
1977         struct mlx5_flow_parse parser = { .create = 0, };
1978
1979         priv_lock(priv);
1980         ret = priv_flow_convert(priv, attr, items, actions, error, &parser);
1981         priv_unlock(priv);
1982         return ret;
1983 }
1984
1985 /**
1986  * Create a flow.
1987  *
1988  * @see rte_flow_create()
1989  * @see rte_flow_ops
1990  */
1991 struct rte_flow *
1992 mlx5_flow_create(struct rte_eth_dev *dev,
1993                  const struct rte_flow_attr *attr,
1994                  const struct rte_flow_item items[],
1995                  const struct rte_flow_action actions[],
1996                  struct rte_flow_error *error)
1997 {
1998         struct priv *priv = dev->data->dev_private;
1999         struct rte_flow *flow;
2000
2001         priv_lock(priv);
2002         flow = priv_flow_create(priv, &priv->flows, attr, items, actions,
2003                                 error);
2004         priv_unlock(priv);
2005         return flow;
2006 }
2007
2008 /**
2009  * Destroy a flow.
2010  *
2011  * @param priv
2012  *   Pointer to private structure.
2013  * @param list
2014  *   Pointer to a TAILQ flow list.
2015  * @param[in] flow
2016  *   Flow to destroy.
2017  */
2018 static void
2019 priv_flow_destroy(struct priv *priv,
2020                   struct mlx5_flows *list,
2021                   struct rte_flow *flow)
2022 {
2023         unsigned int i;
2024
2025         if (flow->drop || !flow->mark)
2026                 goto free;
2027         for (i = 0; i != flow->queues_n; ++i) {
2028                 struct rte_flow *tmp;
2029                 int mark = 0;
2030
2031                 /*
2032                  * To remove the mark from the queue, the queue must not be
2033                  * present in any other marked flow (RSS or not).
2034                  */
2035                 TAILQ_FOREACH(tmp, list, next) {
2036                         unsigned int j;
2037                         uint16_t *tqs = NULL;
2038                         uint16_t tq_n = 0;
2039
2040                         if (!tmp->mark)
2041                                 continue;
2042                         for (j = 0; j != hash_rxq_init_n; ++j) {
2043                                 if (!tmp->frxq[j].hrxq)
2044                                         continue;
2045                                 tqs = tmp->frxq[j].hrxq->ind_table->queues;
2046                                 tq_n = tmp->frxq[j].hrxq->ind_table->queues_n;
2047                         }
2048                         if (!tq_n)
2049                                 continue;
2050                         for (j = 0; (j != tq_n) && !mark; j++)
2051                                 if (tqs[j] == (*flow->queues)[i])
2052                                         mark = 1;
2053                 }
2054                 (*priv->rxqs)[(*flow->queues)[i]]->mark = mark;
2055         }
2056 free:
2057         if (flow->drop) {
2058                 if (flow->drxq.ibv_flow)
2059                         claim_zero(ibv_destroy_flow(flow->drxq.ibv_flow));
2060                 rte_free(flow->drxq.ibv_attr);
2061         } else {
2062                 for (i = 0; i != hash_rxq_init_n; ++i) {
2063                         struct mlx5_flow *frxq = &flow->frxq[i];
2064
2065                         if (frxq->ibv_flow)
2066                                 claim_zero(ibv_destroy_flow(frxq->ibv_flow));
2067                         if (frxq->hrxq)
2068                                 mlx5_priv_hrxq_release(priv, frxq->hrxq);
2069                         if (frxq->ibv_attr)
2070                                 rte_free(frxq->ibv_attr);
2071                 }
2072         }
2073         if (flow->cs) {
2074                 claim_zero(ibv_destroy_counter_set(flow->cs));
2075                 flow->cs = NULL;
2076         }
2077         TAILQ_REMOVE(list, flow, next);
2078         DEBUG("Flow destroyed %p", (void *)flow);
2079         rte_free(flow);
2080 }
2081
2082 /**
2083  * Destroy all flows.
2084  *
2085  * @param priv
2086  *   Pointer to private structure.
2087  * @param list
2088  *   Pointer to a TAILQ flow list.
2089  */
2090 void
2091 priv_flow_flush(struct priv *priv, struct mlx5_flows *list)
2092 {
2093         while (!TAILQ_EMPTY(list)) {
2094                 struct rte_flow *flow;
2095
2096                 flow = TAILQ_FIRST(list);
2097                 priv_flow_destroy(priv, list, flow);
2098         }
2099 }
2100
2101 /**
2102  * Create drop queue.
2103  *
2104  * @param priv
2105  *   Pointer to private structure.
2106  *
2107  * @return
2108  *   0 on success.
2109  */
2110 int
2111 priv_flow_create_drop_queue(struct priv *priv)
2112 {
2113         struct mlx5_hrxq_drop *fdq = NULL;
2114
2115         assert(priv->pd);
2116         assert(priv->ctx);
2117         fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0);
2118         if (!fdq) {
2119                 WARN("cannot allocate memory for drop queue");
2120                 goto error;
2121         }
2122         fdq->cq = ibv_create_cq(priv->ctx, 1, NULL, NULL, 0);
2123         if (!fdq->cq) {
2124                 WARN("cannot allocate CQ for drop queue");
2125                 goto error;
2126         }
2127         fdq->wq = ibv_create_wq(priv->ctx,
2128                         &(struct ibv_wq_init_attr){
2129                         .wq_type = IBV_WQT_RQ,
2130                         .max_wr = 1,
2131                         .max_sge = 1,
2132                         .pd = priv->pd,
2133                         .cq = fdq->cq,
2134                         });
2135         if (!fdq->wq) {
2136                 WARN("cannot allocate WQ for drop queue");
2137                 goto error;
2138         }
2139         fdq->ind_table = ibv_create_rwq_ind_table(priv->ctx,
2140                         &(struct ibv_rwq_ind_table_init_attr){
2141                         .log_ind_tbl_size = 0,
2142                         .ind_tbl = &fdq->wq,
2143                         .comp_mask = 0,
2144                         });
2145         if (!fdq->ind_table) {
2146                 WARN("cannot allocate indirection table for drop queue");
2147                 goto error;
2148         }
2149         fdq->qp = ibv_create_qp_ex(priv->ctx,
2150                 &(struct ibv_qp_init_attr_ex){
2151                         .qp_type = IBV_QPT_RAW_PACKET,
2152                         .comp_mask =
2153                                 IBV_QP_INIT_ATTR_PD |
2154                                 IBV_QP_INIT_ATTR_IND_TABLE |
2155                                 IBV_QP_INIT_ATTR_RX_HASH,
2156                         .rx_hash_conf = (struct ibv_rx_hash_conf){
2157                                 .rx_hash_function =
2158                                         IBV_RX_HASH_FUNC_TOEPLITZ,
2159                                 .rx_hash_key_len = rss_hash_default_key_len,
2160                                 .rx_hash_key = rss_hash_default_key,
2161                                 .rx_hash_fields_mask = 0,
2162                                 },
2163                         .rwq_ind_tbl = fdq->ind_table,
2164                         .pd = priv->pd
2165                 });
2166         if (!fdq->qp) {
2167                 WARN("cannot allocate QP for drop queue");
2168                 goto error;
2169         }
2170         priv->flow_drop_queue = fdq;
2171         return 0;
2172 error:
2173         if (fdq->qp)
2174                 claim_zero(ibv_destroy_qp(fdq->qp));
2175         if (fdq->ind_table)
2176                 claim_zero(ibv_destroy_rwq_ind_table(fdq->ind_table));
2177         if (fdq->wq)
2178                 claim_zero(ibv_destroy_wq(fdq->wq));
2179         if (fdq->cq)
2180                 claim_zero(ibv_destroy_cq(fdq->cq));
2181         if (fdq)
2182                 rte_free(fdq);
2183         priv->flow_drop_queue = NULL;
2184         return -1;
2185 }
2186
2187 /**
2188  * Delete drop queue.
2189  *
2190  * @param priv
2191  *   Pointer to private structure.
2192  */
2193 void
2194 priv_flow_delete_drop_queue(struct priv *priv)
2195 {
2196         struct mlx5_hrxq_drop *fdq = priv->flow_drop_queue;
2197
2198         if (!fdq)
2199                 return;
2200         if (fdq->qp)
2201                 claim_zero(ibv_destroy_qp(fdq->qp));
2202         if (fdq->ind_table)
2203                 claim_zero(ibv_destroy_rwq_ind_table(fdq->ind_table));
2204         if (fdq->wq)
2205                 claim_zero(ibv_destroy_wq(fdq->wq));
2206         if (fdq->cq)
2207                 claim_zero(ibv_destroy_cq(fdq->cq));
2208         rte_free(fdq);
2209         priv->flow_drop_queue = NULL;
2210 }
2211
2212 /**
2213  * Remove all flows.
2214  *
2215  * @param priv
2216  *   Pointer to private structure.
2217  * @param list
2218  *   Pointer to a TAILQ flow list.
2219  */
2220 void
2221 priv_flow_stop(struct priv *priv, struct mlx5_flows *list)
2222 {
2223         struct rte_flow *flow;
2224
2225         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
2226                 unsigned int i;
2227
2228                 if (flow->drop) {
2229                         if (!flow->drxq.ibv_flow)
2230                                 continue;
2231                         claim_zero(ibv_destroy_flow(flow->drxq.ibv_flow));
2232                         flow->drxq.ibv_flow = NULL;
2233                         /* Next flow. */
2234                         continue;
2235                 }
2236                 if (flow->mark) {
2237                         struct mlx5_ind_table_ibv *ind_tbl = NULL;
2238
2239                         for (i = 0; i != hash_rxq_init_n; ++i) {
2240                                 if (!flow->frxq[i].hrxq)
2241                                         continue;
2242                                 ind_tbl = flow->frxq[i].hrxq->ind_table;
2243                         }
2244                         assert(ind_tbl);
2245                         for (i = 0; i != ind_tbl->queues_n; ++i)
2246                                 (*priv->rxqs)[ind_tbl->queues[i]]->mark = 0;
2247                 }
2248                 for (i = 0; i != hash_rxq_init_n; ++i) {
2249                         if (!flow->frxq[i].ibv_flow)
2250                                 continue;
2251                         claim_zero(ibv_destroy_flow(flow->frxq[i].ibv_flow));
2252                         flow->frxq[i].ibv_flow = NULL;
2253                         mlx5_priv_hrxq_release(priv, flow->frxq[i].hrxq);
2254                         flow->frxq[i].hrxq = NULL;
2255                 }
2256                 DEBUG("Flow %p removed", (void *)flow);
2257         }
2258 }
2259
2260 /**
2261  * Add all flows.
2262  *
2263  * @param priv
2264  *   Pointer to private structure.
2265  * @param list
2266  *   Pointer to a TAILQ flow list.
2267  *
2268  * @return
2269  *   0 on success, a errno value otherwise and rte_errno is set.
2270  */
2271 int
2272 priv_flow_start(struct priv *priv, struct mlx5_flows *list)
2273 {
2274         struct rte_flow *flow;
2275
2276         TAILQ_FOREACH(flow, list, next) {
2277                 unsigned int i;
2278
2279                 if (flow->drop) {
2280                         flow->drxq.ibv_flow =
2281                                 ibv_create_flow(priv->flow_drop_queue->qp,
2282                                                 flow->drxq.ibv_attr);
2283                         if (!flow->drxq.ibv_flow) {
2284                                 DEBUG("Flow %p cannot be applied",
2285                                       (void *)flow);
2286                                 rte_errno = EINVAL;
2287                                 return rte_errno;
2288                         }
2289                         DEBUG("Flow %p applied", (void *)flow);
2290                         /* Next flow. */
2291                         continue;
2292                 }
2293                 for (i = 0; i != hash_rxq_init_n; ++i) {
2294                         if (!flow->frxq[i].ibv_attr)
2295                                 continue;
2296                         flow->frxq[i].hrxq =
2297                                 mlx5_priv_hrxq_get(priv, flow->rss_conf.rss_key,
2298                                                    flow->rss_conf.rss_key_len,
2299                                                    hash_rxq_init[i].hash_fields,
2300                                                    (*flow->queues),
2301                                                    flow->queues_n);
2302                         if (flow->frxq[i].hrxq)
2303                                 goto flow_create;
2304                         flow->frxq[i].hrxq =
2305                                 mlx5_priv_hrxq_new(priv, flow->rss_conf.rss_key,
2306                                                    flow->rss_conf.rss_key_len,
2307                                                    hash_rxq_init[i].hash_fields,
2308                                                    (*flow->queues),
2309                                                    flow->queues_n);
2310                         if (!flow->frxq[i].hrxq) {
2311                                 DEBUG("Flow %p cannot be applied",
2312                                       (void *)flow);
2313                                 rte_errno = EINVAL;
2314                                 return rte_errno;
2315                         }
2316 flow_create:
2317                         flow->frxq[i].ibv_flow =
2318                                 ibv_create_flow(flow->frxq[i].hrxq->qp,
2319                                                 flow->frxq[i].ibv_attr);
2320                         if (!flow->frxq[i].ibv_flow) {
2321                                 DEBUG("Flow %p cannot be applied",
2322                                       (void *)flow);
2323                                 rte_errno = EINVAL;
2324                                 return rte_errno;
2325                         }
2326                         DEBUG("Flow %p applied", (void *)flow);
2327                 }
2328                 if (!flow->mark)
2329                         continue;
2330                 for (i = 0; i != flow->queues_n; ++i)
2331                         (*priv->rxqs)[(*flow->queues)[i]]->mark = 1;
2332         }
2333         return 0;
2334 }
2335
2336 /**
2337  * Verify the flow list is empty
2338  *
2339  * @param priv
2340  *  Pointer to private structure.
2341  *
2342  * @return the number of flows not released.
2343  */
2344 int
2345 priv_flow_verify(struct priv *priv)
2346 {
2347         struct rte_flow *flow;
2348         int ret = 0;
2349
2350         TAILQ_FOREACH(flow, &priv->flows, next) {
2351                 DEBUG("%p: flow %p still referenced", (void *)priv,
2352                       (void *)flow);
2353                 ++ret;
2354         }
2355         return ret;
2356 }
2357
2358 /**
2359  * Enable a control flow configured from the control plane.
2360  *
2361  * @param dev
2362  *   Pointer to Ethernet device.
2363  * @param eth_spec
2364  *   An Ethernet flow spec to apply.
2365  * @param eth_mask
2366  *   An Ethernet flow mask to apply.
2367  * @param vlan_spec
2368  *   A VLAN flow spec to apply.
2369  * @param vlan_mask
2370  *   A VLAN flow mask to apply.
2371  *
2372  * @return
2373  *   0 on success.
2374  */
2375 int
2376 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2377                     struct rte_flow_item_eth *eth_spec,
2378                     struct rte_flow_item_eth *eth_mask,
2379                     struct rte_flow_item_vlan *vlan_spec,
2380                     struct rte_flow_item_vlan *vlan_mask)
2381 {
2382         struct priv *priv = dev->data->dev_private;
2383         const struct rte_flow_attr attr = {
2384                 .ingress = 1,
2385                 .priority = MLX5_CTRL_FLOW_PRIORITY,
2386         };
2387         struct rte_flow_item items[] = {
2388                 {
2389                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2390                         .spec = eth_spec,
2391                         .last = NULL,
2392                         .mask = eth_mask,
2393                 },
2394                 {
2395                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2396                                 RTE_FLOW_ITEM_TYPE_END,
2397                         .spec = vlan_spec,
2398                         .last = NULL,
2399                         .mask = vlan_mask,
2400                 },
2401                 {
2402                         .type = RTE_FLOW_ITEM_TYPE_END,
2403                 },
2404         };
2405         struct rte_flow_action actions[] = {
2406                 {
2407                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2408                 },
2409                 {
2410                         .type = RTE_FLOW_ACTION_TYPE_END,
2411                 },
2412         };
2413         struct rte_flow *flow;
2414         struct rte_flow_error error;
2415         unsigned int i;
2416         union {
2417                 struct rte_flow_action_rss rss;
2418                 struct {
2419                         const struct rte_eth_rss_conf *rss_conf;
2420                         uint16_t num;
2421                         uint16_t queue[RTE_MAX_QUEUES_PER_PORT];
2422                 } local;
2423         } action_rss;
2424
2425         if (!priv->reta_idx_n)
2426                 return EINVAL;
2427         for (i = 0; i != priv->reta_idx_n; ++i)
2428                 action_rss.local.queue[i] = (*priv->reta_idx)[i];
2429         action_rss.local.rss_conf = &priv->rss_conf;
2430         action_rss.local.num = priv->reta_idx_n;
2431         actions[0].conf = (const void *)&action_rss.rss;
2432         flow = priv_flow_create(priv, &priv->ctrl_flows, &attr, items, actions,
2433                                 &error);
2434         if (!flow)
2435                 return rte_errno;
2436         return 0;
2437 }
2438
2439 /**
2440  * Enable a flow control configured from the control plane.
2441  *
2442  * @param dev
2443  *   Pointer to Ethernet device.
2444  * @param eth_spec
2445  *   An Ethernet flow spec to apply.
2446  * @param eth_mask
2447  *   An Ethernet flow mask to apply.
2448  *
2449  * @return
2450  *   0 on success.
2451  */
2452 int
2453 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2454                struct rte_flow_item_eth *eth_spec,
2455                struct rte_flow_item_eth *eth_mask)
2456 {
2457         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2458 }
2459
2460 /**
2461  * Destroy a flow.
2462  *
2463  * @see rte_flow_destroy()
2464  * @see rte_flow_ops
2465  */
2466 int
2467 mlx5_flow_destroy(struct rte_eth_dev *dev,
2468                   struct rte_flow *flow,
2469                   struct rte_flow_error *error)
2470 {
2471         struct priv *priv = dev->data->dev_private;
2472
2473         (void)error;
2474         priv_lock(priv);
2475         priv_flow_destroy(priv, &priv->flows, flow);
2476         priv_unlock(priv);
2477         return 0;
2478 }
2479
2480 /**
2481  * Destroy all flows.
2482  *
2483  * @see rte_flow_flush()
2484  * @see rte_flow_ops
2485  */
2486 int
2487 mlx5_flow_flush(struct rte_eth_dev *dev,
2488                 struct rte_flow_error *error)
2489 {
2490         struct priv *priv = dev->data->dev_private;
2491
2492         (void)error;
2493         priv_lock(priv);
2494         priv_flow_flush(priv, &priv->flows);
2495         priv_unlock(priv);
2496         return 0;
2497 }
2498
2499 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
2500 /**
2501  * Query flow counter.
2502  *
2503  * @param cs
2504  *   the counter set.
2505  * @param counter_value
2506  *   returned data from the counter.
2507  *
2508  * @return
2509  *   0 on success, a errno value otherwise and rte_errno is set.
2510  */
2511 static int
2512 priv_flow_query_count(struct ibv_counter_set *cs,
2513                       struct mlx5_flow_counter_stats *counter_stats,
2514                       struct rte_flow_query_count *query_count,
2515                       struct rte_flow_error *error)
2516 {
2517         uint64_t counters[2];
2518         struct ibv_query_counter_set_attr query_cs_attr = {
2519                 .cs = cs,
2520                 .query_flags = IBV_COUNTER_SET_FORCE_UPDATE,
2521         };
2522         struct ibv_counter_set_data query_out = {
2523                 .out = counters,
2524                 .outlen = 2 * sizeof(uint64_t),
2525         };
2526         int res = ibv_query_counter_set(&query_cs_attr, &query_out);
2527
2528         if (res) {
2529                 rte_flow_error_set(error, -res,
2530                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2531                                    NULL,
2532                                    "cannot read counter");
2533                 return -res;
2534         }
2535         query_count->hits_set = 1;
2536         query_count->bytes_set = 1;
2537         query_count->hits = counters[0] - counter_stats->hits;
2538         query_count->bytes = counters[1] - counter_stats->bytes;
2539         if (query_count->reset) {
2540                 counter_stats->hits = counters[0];
2541                 counter_stats->bytes = counters[1];
2542         }
2543         return 0;
2544 }
2545
2546 /**
2547  * Query a flows.
2548  *
2549  * @see rte_flow_query()
2550  * @see rte_flow_ops
2551  */
2552 int
2553 mlx5_flow_query(struct rte_eth_dev *dev,
2554                 struct rte_flow *flow,
2555                 enum rte_flow_action_type action __rte_unused,
2556                 void *data,
2557                 struct rte_flow_error *error)
2558 {
2559         struct priv *priv = dev->data->dev_private;
2560         int res = EINVAL;
2561
2562         priv_lock(priv);
2563         if (flow->cs) {
2564                 res = priv_flow_query_count(flow->cs,
2565                                         &flow->counter_stats,
2566                                         (struct rte_flow_query_count *)data,
2567                                         error);
2568         } else {
2569                 rte_flow_error_set(error, res,
2570                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2571                                    NULL,
2572                                    "no counter found for flow");
2573         }
2574         priv_unlock(priv);
2575         return -res;
2576 }
2577 #endif
2578
2579 /**
2580  * Isolated mode.
2581  *
2582  * @see rte_flow_isolate()
2583  * @see rte_flow_ops
2584  */
2585 int
2586 mlx5_flow_isolate(struct rte_eth_dev *dev,
2587                   int enable,
2588                   struct rte_flow_error *error)
2589 {
2590         struct priv *priv = dev->data->dev_private;
2591
2592         priv_lock(priv);
2593         if (dev->data->dev_started) {
2594                 rte_flow_error_set(error, EBUSY,
2595                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2596                                    NULL,
2597                                    "port must be stopped first");
2598                 priv_unlock(priv);
2599                 return -rte_errno;
2600         }
2601         priv->isolated = !!enable;
2602         if (enable)
2603                 priv->dev->dev_ops = &mlx5_dev_ops_isolate;
2604         else
2605                 priv->dev->dev_ops = &mlx5_dev_ops;
2606         priv_unlock(priv);
2607         return 0;
2608 }
2609
2610 /**
2611  * Convert a flow director filter to a generic flow.
2612  *
2613  * @param priv
2614  *   Private structure.
2615  * @param fdir_filter
2616  *   Flow director filter to add.
2617  * @param attributes
2618  *   Generic flow parameters structure.
2619  *
2620  * @return
2621  *  0 on success, errno value on error.
2622  */
2623 static int
2624 priv_fdir_filter_convert(struct priv *priv,
2625                          const struct rte_eth_fdir_filter *fdir_filter,
2626                          struct mlx5_fdir *attributes)
2627 {
2628         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2629
2630         /* Validate queue number. */
2631         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2632                 ERROR("invalid queue number %d", fdir_filter->action.rx_queue);
2633                 return EINVAL;
2634         }
2635         attributes->attr.ingress = 1;
2636         attributes->items[0] = (struct rte_flow_item) {
2637                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2638                 .spec = &attributes->l2,
2639                 .mask = &attributes->l2_mask,
2640         };
2641         switch (fdir_filter->action.behavior) {
2642         case RTE_ETH_FDIR_ACCEPT:
2643                 attributes->actions[0] = (struct rte_flow_action){
2644                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2645                         .conf = &attributes->queue,
2646                 };
2647                 break;
2648         case RTE_ETH_FDIR_REJECT:
2649                 attributes->actions[0] = (struct rte_flow_action){
2650                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2651                 };
2652                 break;
2653         default:
2654                 ERROR("invalid behavior %d", fdir_filter->action.behavior);
2655                 return ENOTSUP;
2656         }
2657         attributes->queue.index = fdir_filter->action.rx_queue;
2658         switch (fdir_filter->input.flow_type) {
2659         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2660                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2661                         .src_addr = input->flow.udp4_flow.ip.src_ip,
2662                         .dst_addr = input->flow.udp4_flow.ip.dst_ip,
2663                         .time_to_live = input->flow.udp4_flow.ip.ttl,
2664                         .type_of_service = input->flow.udp4_flow.ip.tos,
2665                         .next_proto_id = input->flow.udp4_flow.ip.proto,
2666                 };
2667                 attributes->l4.udp.hdr = (struct udp_hdr){
2668                         .src_port = input->flow.udp4_flow.src_port,
2669                         .dst_port = input->flow.udp4_flow.dst_port,
2670                 };
2671                 attributes->items[1] = (struct rte_flow_item){
2672                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2673                         .spec = &attributes->l3,
2674                 };
2675                 attributes->items[2] = (struct rte_flow_item){
2676                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2677                         .spec = &attributes->l4,
2678                 };
2679                 break;
2680         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2681                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2682                         .src_addr = input->flow.tcp4_flow.ip.src_ip,
2683                         .dst_addr = input->flow.tcp4_flow.ip.dst_ip,
2684                         .time_to_live = input->flow.tcp4_flow.ip.ttl,
2685                         .type_of_service = input->flow.tcp4_flow.ip.tos,
2686                         .next_proto_id = input->flow.tcp4_flow.ip.proto,
2687                 };
2688                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2689                         .src_port = input->flow.tcp4_flow.src_port,
2690                         .dst_port = input->flow.tcp4_flow.dst_port,
2691                 };
2692                 attributes->items[1] = (struct rte_flow_item){
2693                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2694                         .spec = &attributes->l3,
2695                 };
2696                 attributes->items[2] = (struct rte_flow_item){
2697                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2698                         .spec = &attributes->l4,
2699                 };
2700                 break;
2701         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2702                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2703                         .src_addr = input->flow.ip4_flow.src_ip,
2704                         .dst_addr = input->flow.ip4_flow.dst_ip,
2705                         .time_to_live = input->flow.ip4_flow.ttl,
2706                         .type_of_service = input->flow.ip4_flow.tos,
2707                         .next_proto_id = input->flow.ip4_flow.proto,
2708                 };
2709                 attributes->items[1] = (struct rte_flow_item){
2710                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2711                         .spec = &attributes->l3,
2712                 };
2713                 break;
2714         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2715                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2716                         .hop_limits = input->flow.udp6_flow.ip.hop_limits,
2717                         .proto = input->flow.udp6_flow.ip.proto,
2718                 };
2719                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2720                        input->flow.udp6_flow.ip.src_ip,
2721                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2722                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2723                        input->flow.udp6_flow.ip.dst_ip,
2724                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2725                 attributes->l4.udp.hdr = (struct udp_hdr){
2726                         .src_port = input->flow.udp6_flow.src_port,
2727                         .dst_port = input->flow.udp6_flow.dst_port,
2728                 };
2729                 attributes->items[1] = (struct rte_flow_item){
2730                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2731                         .spec = &attributes->l3,
2732                 };
2733                 attributes->items[2] = (struct rte_flow_item){
2734                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2735                         .spec = &attributes->l4,
2736                 };
2737                 break;
2738         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2739                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2740                         .hop_limits = input->flow.tcp6_flow.ip.hop_limits,
2741                         .proto = input->flow.tcp6_flow.ip.proto,
2742                 };
2743                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2744                        input->flow.tcp6_flow.ip.src_ip,
2745                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2746                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2747                        input->flow.tcp6_flow.ip.dst_ip,
2748                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2749                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2750                         .src_port = input->flow.tcp6_flow.src_port,
2751                         .dst_port = input->flow.tcp6_flow.dst_port,
2752                 };
2753                 attributes->items[1] = (struct rte_flow_item){
2754                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2755                         .spec = &attributes->l3,
2756                 };
2757                 attributes->items[2] = (struct rte_flow_item){
2758                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2759                         .spec = &attributes->l4,
2760                 };
2761                 break;
2762         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2763                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2764                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2765                         .proto = input->flow.ipv6_flow.proto,
2766                 };
2767                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2768                        input->flow.ipv6_flow.src_ip,
2769                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2770                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2771                        input->flow.ipv6_flow.dst_ip,
2772                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2773                 attributes->items[1] = (struct rte_flow_item){
2774                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2775                         .spec = &attributes->l3,
2776                 };
2777                 break;
2778         default:
2779                 ERROR("invalid flow type%d",
2780                       fdir_filter->input.flow_type);
2781                 return ENOTSUP;
2782         }
2783         return 0;
2784 }
2785
2786 /**
2787  * Add new flow director filter and store it in list.
2788  *
2789  * @param priv
2790  *   Private structure.
2791  * @param fdir_filter
2792  *   Flow director filter to add.
2793  *
2794  * @return
2795  *   0 on success, errno value on failure.
2796  */
2797 static int
2798 priv_fdir_filter_add(struct priv *priv,
2799                      const struct rte_eth_fdir_filter *fdir_filter)
2800 {
2801         struct mlx5_fdir attributes = {
2802                 .attr.group = 0,
2803                 .l2_mask = {
2804                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2805                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2806                         .type = 0,
2807                 },
2808         };
2809         struct mlx5_flow_parse parser = {
2810                 .layer = HASH_RXQ_ETH,
2811         };
2812         struct rte_flow_error error;
2813         struct rte_flow *flow;
2814         int ret;
2815
2816         ret = priv_fdir_filter_convert(priv, fdir_filter, &attributes);
2817         if (ret)
2818                 return -ret;
2819         ret = priv_flow_convert(priv, &attributes.attr, attributes.items,
2820                                 attributes.actions, &error, &parser);
2821         if (ret)
2822                 return -ret;
2823         flow = priv_flow_create(priv,
2824                                 &priv->flows,
2825                                 &attributes.attr,
2826                                 attributes.items,
2827                                 attributes.actions,
2828                                 &error);
2829         if (flow) {
2830                 DEBUG("FDIR created %p", (void *)flow);
2831                 return 0;
2832         }
2833         return ENOTSUP;
2834 }
2835
2836 /**
2837  * Delete specific filter.
2838  *
2839  * @param priv
2840  *   Private structure.
2841  * @param fdir_filter
2842  *   Filter to be deleted.
2843  *
2844  * @return
2845  *   0 on success, errno value on failure.
2846  */
2847 static int
2848 priv_fdir_filter_delete(struct priv *priv,
2849                         const struct rte_eth_fdir_filter *fdir_filter)
2850 {
2851         struct mlx5_fdir attributes = {
2852                 .attr.group = 0,
2853         };
2854         struct mlx5_flow_parse parser = {
2855                 .create = 1,
2856                 .layer = HASH_RXQ_ETH,
2857         };
2858         struct rte_flow_error error;
2859         struct rte_flow *flow;
2860         unsigned int i;
2861         int ret;
2862
2863         ret = priv_fdir_filter_convert(priv, fdir_filter, &attributes);
2864         if (ret)
2865                 return -ret;
2866         ret = priv_flow_convert(priv, &attributes.attr, attributes.items,
2867                                 attributes.actions, &error, &parser);
2868         if (ret)
2869                 goto exit;
2870         /*
2871          * Special case for drop action which is only set in the
2872          * specifications when the flow is created.  In this situation the
2873          * drop specification is missing.
2874          */
2875         if (parser.drop) {
2876                 struct ibv_flow_spec_action_drop *drop;
2877
2878                 drop = (void *)((uintptr_t)parser.drop_q.ibv_attr +
2879                                 parser.drop_q.offset);
2880                 *drop = (struct ibv_flow_spec_action_drop){
2881                         .type = IBV_FLOW_SPEC_ACTION_DROP,
2882                         .size = sizeof(struct ibv_flow_spec_action_drop),
2883                 };
2884                 parser.drop_q.ibv_attr->num_of_specs++;
2885         }
2886         TAILQ_FOREACH(flow, &priv->flows, next) {
2887                 struct ibv_flow_attr *attr;
2888                 struct ibv_spec_header *attr_h;
2889                 void *spec;
2890                 struct ibv_flow_attr *flow_attr;
2891                 struct ibv_spec_header *flow_h;
2892                 void *flow_spec;
2893                 unsigned int specs_n;
2894
2895                 if (parser.drop)
2896                         attr = parser.drop_q.ibv_attr;
2897                 else
2898                         attr = parser.queue[HASH_RXQ_ETH].ibv_attr;
2899                 if (flow->drop)
2900                         flow_attr = flow->drxq.ibv_attr;
2901                 else
2902                         flow_attr = flow->frxq[HASH_RXQ_ETH].ibv_attr;
2903                 /* Compare first the attributes. */
2904                 if (memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
2905                         continue;
2906                 if (attr->num_of_specs == 0)
2907                         continue;
2908                 spec = (void *)((uintptr_t)attr +
2909                                 sizeof(struct ibv_flow_attr));
2910                 flow_spec = (void *)((uintptr_t)flow_attr +
2911                                      sizeof(struct ibv_flow_attr));
2912                 specs_n = RTE_MIN(attr->num_of_specs, flow_attr->num_of_specs);
2913                 for (i = 0; i != specs_n; ++i) {
2914                         attr_h = spec;
2915                         flow_h = flow_spec;
2916                         if (memcmp(spec, flow_spec,
2917                                    RTE_MIN(attr_h->size, flow_h->size)))
2918                                 goto wrong_flow;
2919                         spec = (void *)((uintptr_t)spec + attr_h->size);
2920                         flow_spec = (void *)((uintptr_t)flow_spec +
2921                                              flow_h->size);
2922                 }
2923                 /* At this point, the flow match. */
2924                 break;
2925 wrong_flow:
2926                 /* The flow does not match. */
2927                 continue;
2928         }
2929         if (flow)
2930                 priv_flow_destroy(priv, &priv->flows, flow);
2931 exit:
2932         if (parser.drop) {
2933                 rte_free(parser.drop_q.ibv_attr);
2934         } else {
2935                 for (i = 0; i != hash_rxq_init_n; ++i) {
2936                         if (parser.queue[i].ibv_attr)
2937                                 rte_free(parser.queue[i].ibv_attr);
2938                 }
2939         }
2940         return -ret;
2941 }
2942
2943 /**
2944  * Update queue for specific filter.
2945  *
2946  * @param priv
2947  *   Private structure.
2948  * @param fdir_filter
2949  *   Filter to be updated.
2950  *
2951  * @return
2952  *   0 on success, errno value on failure.
2953  */
2954 static int
2955 priv_fdir_filter_update(struct priv *priv,
2956                         const struct rte_eth_fdir_filter *fdir_filter)
2957 {
2958         int ret;
2959
2960         ret = priv_fdir_filter_delete(priv, fdir_filter);
2961         if (ret)
2962                 return ret;
2963         ret = priv_fdir_filter_add(priv, fdir_filter);
2964         return ret;
2965 }
2966
2967 /**
2968  * Flush all filters.
2969  *
2970  * @param priv
2971  *   Private structure.
2972  */
2973 static void
2974 priv_fdir_filter_flush(struct priv *priv)
2975 {
2976         priv_flow_flush(priv, &priv->flows);
2977 }
2978
2979 /**
2980  * Get flow director information.
2981  *
2982  * @param priv
2983  *   Private structure.
2984  * @param[out] fdir_info
2985  *   Resulting flow director information.
2986  */
2987 static void
2988 priv_fdir_info_get(struct priv *priv, struct rte_eth_fdir_info *fdir_info)
2989 {
2990         struct rte_eth_fdir_masks *mask =
2991                 &priv->dev->data->dev_conf.fdir_conf.mask;
2992
2993         fdir_info->mode = priv->dev->data->dev_conf.fdir_conf.mode;
2994         fdir_info->guarant_spc = 0;
2995         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
2996         fdir_info->max_flexpayload = 0;
2997         fdir_info->flow_types_mask[0] = 0;
2998         fdir_info->flex_payload_unit = 0;
2999         fdir_info->max_flex_payload_segment_num = 0;
3000         fdir_info->flex_payload_limit = 0;
3001         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
3002 }
3003
3004 /**
3005  * Deal with flow director operations.
3006  *
3007  * @param priv
3008  *   Pointer to private structure.
3009  * @param filter_op
3010  *   Operation to perform.
3011  * @param arg
3012  *   Pointer to operation-specific structure.
3013  *
3014  * @return
3015  *   0 on success, errno value on failure.
3016  */
3017 static int
3018 priv_fdir_ctrl_func(struct priv *priv, enum rte_filter_op filter_op, void *arg)
3019 {
3020         enum rte_fdir_mode fdir_mode =
3021                 priv->dev->data->dev_conf.fdir_conf.mode;
3022         int ret = 0;
3023
3024         if (filter_op == RTE_ETH_FILTER_NOP)
3025                 return 0;
3026         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
3027             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
3028                 ERROR("%p: flow director mode %d not supported",
3029                       (void *)priv, fdir_mode);
3030                 return EINVAL;
3031         }
3032         switch (filter_op) {
3033         case RTE_ETH_FILTER_ADD:
3034                 ret = priv_fdir_filter_add(priv, arg);
3035                 break;
3036         case RTE_ETH_FILTER_UPDATE:
3037                 ret = priv_fdir_filter_update(priv, arg);
3038                 break;
3039         case RTE_ETH_FILTER_DELETE:
3040                 ret = priv_fdir_filter_delete(priv, arg);
3041                 break;
3042         case RTE_ETH_FILTER_FLUSH:
3043                 priv_fdir_filter_flush(priv);
3044                 break;
3045         case RTE_ETH_FILTER_INFO:
3046                 priv_fdir_info_get(priv, arg);
3047                 break;
3048         default:
3049                 DEBUG("%p: unknown operation %u", (void *)priv,
3050                       filter_op);
3051                 ret = EINVAL;
3052                 break;
3053         }
3054         return ret;
3055 }
3056
3057 /**
3058  * Manage filter operations.
3059  *
3060  * @param dev
3061  *   Pointer to Ethernet device structure.
3062  * @param filter_type
3063  *   Filter type.
3064  * @param filter_op
3065  *   Operation to perform.
3066  * @param arg
3067  *   Pointer to operation-specific structure.
3068  *
3069  * @return
3070  *   0 on success, negative errno value on failure.
3071  */
3072 int
3073 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
3074                      enum rte_filter_type filter_type,
3075                      enum rte_filter_op filter_op,
3076                      void *arg)
3077 {
3078         int ret = EINVAL;
3079         struct priv *priv = dev->data->dev_private;
3080
3081         switch (filter_type) {
3082         case RTE_ETH_FILTER_GENERIC:
3083                 if (filter_op != RTE_ETH_FILTER_GET)
3084                         return -EINVAL;
3085                 *(const void **)arg = &mlx5_flow_ops;
3086                 return 0;
3087         case RTE_ETH_FILTER_FDIR:
3088                 priv_lock(priv);
3089                 ret = priv_fdir_ctrl_func(priv, filter_op, arg);
3090                 priv_unlock(priv);
3091                 break;
3092         default:
3093                 ERROR("%p: filter type (%d) not supported",
3094                       (void *)dev, filter_type);
3095                 break;
3096         }
3097         return -ret;
3098 }