drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <sys/queue.h>
   7 #include <stdint.h>
   8 #include <string.h>
   9
  10 /* Verbs header. */
  11 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  12 #ifdef PEDANTIC
  13 #pragma GCC diagnostic ignored "-Wpedantic"
  14 #endif
  15 #include <infiniband/verbs.h>
  16 #ifdef PEDANTIC
  17 #pragma GCC diagnostic error "-Wpedantic"
  18 #endif
  19
  20 #include <rte_common.h>
  21 #include <rte_ether.h>
  22 #include <rte_eth_ctrl.h>
  23 #include <rte_ethdev_driver.h>
  24 #include <rte_flow.h>
  25 #include <rte_flow_driver.h>
  26 #include <rte_malloc.h>
  27 #include <rte_ip.h>
  28
  29 #include "mlx5.h"
  30 #include "mlx5_defs.h"
  31 #include "mlx5_prm.h"
  32 #include "mlx5_glue.h"
  33
  34 /* Flow priority for control plane flows. */
  35 #define MLX5_CTRL_FLOW_PRIORITY 1
  36
  37 /* Internet Protocol versions. */
  38 #define MLX5_IPV4 4
  39 #define MLX5_IPV6 6
  40 #define MLX5_GRE 47
  41
  42 #ifndef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
  43 struct ibv_flow_spec_counter_action {
  44         int dummy;
  45 };
  46 #endif
  47
  48 /* Dev ops structure defined in mlx5.c */
  49 extern const struct eth_dev_ops mlx5_dev_ops;
  50 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  51
  52 /** Structure give to the conversion functions. */
  53 struct mlx5_flow_data {
  54         struct rte_eth_dev *dev; /** Ethernet device. */
  55         struct mlx5_flow_parse *parser; /** Parser context. */
  56         struct rte_flow_error *error; /** Error context. */
  57 };
  58
  59 static int
  60 mlx5_flow_create_eth(const struct rte_flow_item *item,
  61                      const void *default_mask,
  62                      struct mlx5_flow_data *data);
  63
  64 static int
  65 mlx5_flow_create_vlan(const struct rte_flow_item *item,
  66                       const void *default_mask,
  67                       struct mlx5_flow_data *data);
  68
  69 static int
  70 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
  71                       const void *default_mask,
  72                       struct mlx5_flow_data *data);
  73
  74 static int
  75 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
  76                       const void *default_mask,
  77                       struct mlx5_flow_data *data);
  78
  79 static int
  80 mlx5_flow_create_udp(const struct rte_flow_item *item,
  81                      const void *default_mask,
  82                      struct mlx5_flow_data *data);
  83
  84 static int
  85 mlx5_flow_create_tcp(const struct rte_flow_item *item,
  86                      const void *default_mask,
  87                      struct mlx5_flow_data *data);
  88
  89 static int
  90 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
  91                        const void *default_mask,
  92                        struct mlx5_flow_data *data);
  93
  94 static int
  95 mlx5_flow_create_vxlan_gpe(const struct rte_flow_item *item,
  96                            const void *default_mask,
  97                            struct mlx5_flow_data *data);
  98
  99 static int
 100 mlx5_flow_create_gre(const struct rte_flow_item *item,
 101                      const void *default_mask,
 102                      struct mlx5_flow_data *data);
 103
 104 static int
 105 mlx5_flow_create_mpls(const struct rte_flow_item *item,
 106                       const void *default_mask,
 107                       struct mlx5_flow_data *data);
 108
 109 struct mlx5_flow_parse;
 110
 111 static void
 112 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
 113                       unsigned int size);
 114
 115 static int
 116 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id);
 117
 118 static int
 119 mlx5_flow_create_count(struct rte_eth_dev *dev, struct mlx5_flow_parse *parser);
 120
 121 /* Hash RX queue types. */
 122 enum hash_rxq_type {
 123         HASH_RXQ_TCPV4,
 124         HASH_RXQ_UDPV4,
 125         HASH_RXQ_IPV4,
 126         HASH_RXQ_TCPV6,
 127         HASH_RXQ_UDPV6,
 128         HASH_RXQ_IPV6,
 129         HASH_RXQ_ETH,
 130         HASH_RXQ_TUNNEL,
 131 };
 132
 133 /* Initialization data for hash RX queue. */
 134 struct hash_rxq_init {
 135         uint64_t hash_fields; /* Fields that participate in the hash. */
 136         uint64_t dpdk_rss_hf; /* Matching DPDK RSS hash fields. */
 137         unsigned int flow_priority; /* Flow priority to use. */
 138         unsigned int ip_version; /* Internet protocol. */
 139 };
 140
 141 /* Initialization data for hash RX queues. */
 142 const struct hash_rxq_init hash_rxq_init[] = {
 143         [HASH_RXQ_TCPV4] = {
 144                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 145                                 IBV_RX_HASH_DST_IPV4 |
 146                                 IBV_RX_HASH_SRC_PORT_TCP |
 147                                 IBV_RX_HASH_DST_PORT_TCP),
 148                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_TCP,
 149                 .flow_priority = 0,
 150                 .ip_version = MLX5_IPV4,
 151         },
 152         [HASH_RXQ_UDPV4] = {
 153                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 154                                 IBV_RX_HASH_DST_IPV4 |
 155                                 IBV_RX_HASH_SRC_PORT_UDP |
 156                                 IBV_RX_HASH_DST_PORT_UDP),
 157                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV4_UDP,
 158                 .flow_priority = 0,
 159                 .ip_version = MLX5_IPV4,
 160         },
 161         [HASH_RXQ_IPV4] = {
 162                 .hash_fields = (IBV_RX_HASH_SRC_IPV4 |
 163                                 IBV_RX_HASH_DST_IPV4),
 164                 .dpdk_rss_hf = (ETH_RSS_IPV4 |
 165                                 ETH_RSS_FRAG_IPV4),
 166                 .flow_priority = 1,
 167                 .ip_version = MLX5_IPV4,
 168         },
 169         [HASH_RXQ_TCPV6] = {
 170                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 171                                 IBV_RX_HASH_DST_IPV6 |
 172                                 IBV_RX_HASH_SRC_PORT_TCP |
 173                                 IBV_RX_HASH_DST_PORT_TCP),
 174                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_TCP,
 175                 .flow_priority = 0,
 176                 .ip_version = MLX5_IPV6,
 177         },
 178         [HASH_RXQ_UDPV6] = {
 179                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 180                                 IBV_RX_HASH_DST_IPV6 |
 181                                 IBV_RX_HASH_SRC_PORT_UDP |
 182                                 IBV_RX_HASH_DST_PORT_UDP),
 183                 .dpdk_rss_hf = ETH_RSS_NONFRAG_IPV6_UDP,
 184                 .flow_priority = 0,
 185                 .ip_version = MLX5_IPV6,
 186         },
 187         [HASH_RXQ_IPV6] = {
 188                 .hash_fields = (IBV_RX_HASH_SRC_IPV6 |
 189                                 IBV_RX_HASH_DST_IPV6),
 190                 .dpdk_rss_hf = (ETH_RSS_IPV6 |
 191                                 ETH_RSS_FRAG_IPV6),
 192                 .flow_priority = 1,
 193                 .ip_version = MLX5_IPV6,
 194         },
 195         [HASH_RXQ_ETH] = {
 196                 .hash_fields = 0,
 197                 .dpdk_rss_hf = 0,
 198                 .flow_priority = 2,
 199         },
 200 };
 201
 202 /* Number of entries in hash_rxq_init[]. */
 203 const unsigned int hash_rxq_init_n = RTE_DIM(hash_rxq_init);
 204
 205 /** Structure for holding counter stats. */
 206 struct mlx5_flow_counter_stats {
 207         uint64_t hits; /**< Number of packets matched by the rule. */
 208         uint64_t bytes; /**< Number of bytes matched by the rule. */
 209 };
 210
 211 /** Structure for Drop queue. */
 212 struct mlx5_hrxq_drop {
 213         struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
 214         struct ibv_qp *qp; /**< Verbs queue pair. */
 215         struct ibv_wq *wq; /**< Verbs work queue. */
 216         struct ibv_cq *cq; /**< Verbs completion queue. */
 217 };
 218
 219 /* Flows structures. */
 220 struct mlx5_flow {
 221         uint64_t hash_fields; /**< Fields that participate in the hash. */
 222         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 223         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 224         struct mlx5_hrxq *hrxq; /**< Hash Rx queues. */
 225 };
 226
 227 /* Drop flows structures. */
 228 struct mlx5_flow_drop {
 229         struct ibv_flow_attr *ibv_attr; /**< Pointer to Verbs attributes. */
 230         struct ibv_flow *ibv_flow; /**< Verbs flow. */
 231 };
 232
 233 struct rte_flow {
 234         TAILQ_ENTRY(rte_flow) next; /**< Pointer to the next flow structure. */
 235         uint32_t mark:1; /**< Set if the flow is marked. */
 236         uint32_t drop:1; /**< Drop queue. */
 237         struct rte_flow_action_rss rss_conf; /**< RSS configuration */
 238         uint16_t (*queues)[]; /**< Queues indexes to use. */
 239         uint8_t rss_key[40]; /**< copy of the RSS key. */
 240         uint32_t tunnel; /**< Tunnel type of RTE_PTYPE_TUNNEL_XXX. */
 241         struct ibv_counter_set *cs; /**< Holds the counters for the rule. */
 242         struct mlx5_flow_counter_stats counter_stats;/**<The counter stats. */
 243         struct mlx5_flow frxq[RTE_DIM(hash_rxq_init)];
 244         /**< Flow with Rx queue. */
 245 };
 246
 247 /** Static initializer for items. */
 248 #define ITEMS(...) \
 249         (const enum rte_flow_item_type []){ \
 250                 __VA_ARGS__, RTE_FLOW_ITEM_TYPE_END, \
 251         }
 252
 253 #define IS_TUNNEL(type) ( \
 254         (type) == RTE_FLOW_ITEM_TYPE_VXLAN || \
 255         (type) == RTE_FLOW_ITEM_TYPE_VXLAN_GPE || \
 256         (type) == RTE_FLOW_ITEM_TYPE_GRE || \
 257         (type) == RTE_FLOW_ITEM_TYPE_MPLS)
 258
 259 const uint32_t flow_ptype[] = {
 260         [RTE_FLOW_ITEM_TYPE_VXLAN] = RTE_PTYPE_TUNNEL_VXLAN,
 261         [RTE_FLOW_ITEM_TYPE_VXLAN_GPE] = RTE_PTYPE_TUNNEL_VXLAN_GPE,
 262         [RTE_FLOW_ITEM_TYPE_GRE] = RTE_PTYPE_TUNNEL_GRE,
 263         [RTE_FLOW_ITEM_TYPE_MPLS] = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 264 };
 265
 266 #define PTYPE_IDX(t) ((RTE_PTYPE_TUNNEL_MASK & (t)) >> 12)
 267
 268 const uint32_t ptype_ext[] = {
 269         [PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)] = RTE_PTYPE_TUNNEL_VXLAN |
 270                                               RTE_PTYPE_L4_UDP,
 271         [PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN_GPE)] = RTE_PTYPE_TUNNEL_VXLAN_GPE |
 272                                                   RTE_PTYPE_L4_UDP,
 273         [PTYPE_IDX(RTE_PTYPE_TUNNEL_GRE)] = RTE_PTYPE_TUNNEL_GRE,
 274         [PTYPE_IDX(RTE_PTYPE_TUNNEL_MPLS_IN_GRE)] =
 275                 RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 276         [PTYPE_IDX(RTE_PTYPE_TUNNEL_MPLS_IN_UDP)] =
 277                 RTE_PTYPE_TUNNEL_MPLS_IN_GRE | RTE_PTYPE_L4_UDP,
 278 };
 279
 280 /** Structure to generate a simple graph of layers supported by the NIC. */
 281 struct mlx5_flow_items {
 282         /** List of possible actions for these items. */
 283         const enum rte_flow_action_type *const actions;
 284         /** Bit-masks corresponding to the possibilities for the item. */
 285         const void *mask;
 286         /**
 287          * Default bit-masks to use when item->mask is not provided. When
 288          * \default_mask is also NULL, the full supported bit-mask (\mask) is
 289          * used instead.
 290          */
 291         const void *default_mask;
 292         /** Bit-masks size in bytes. */
 293         const unsigned int mask_sz;
 294         /**
 295          * Conversion function from rte_flow to NIC specific flow.
 296          *
 297          * @param item
 298          *   rte_flow item to convert.
 299          * @param default_mask
 300          *   Default bit-masks to use when item->mask is not provided.
 301          * @param data
 302          *   Internal structure to store the conversion.
 303          *
 304          * @return
 305          *   0 on success, a negative errno value otherwise and rte_errno is
 306          *   set.
 307          */
 308         int (*convert)(const struct rte_flow_item *item,
 309                        const void *default_mask,
 310                        struct mlx5_flow_data *data);
 311         /** Size in bytes of the destination structure. */
 312         const unsigned int dst_sz;
 313         /** List of possible following items.  */
 314         const enum rte_flow_item_type *const items;
 315 };
 316
 317 /** Valid action for this PMD. */
 318 static const enum rte_flow_action_type valid_actions[] = {
 319         RTE_FLOW_ACTION_TYPE_DROP,
 320         RTE_FLOW_ACTION_TYPE_QUEUE,
 321         RTE_FLOW_ACTION_TYPE_MARK,
 322         RTE_FLOW_ACTION_TYPE_FLAG,
 323 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 324         RTE_FLOW_ACTION_TYPE_COUNT,
 325 #endif
 326         RTE_FLOW_ACTION_TYPE_END,
 327 };
 328
 329 /** Graph of supported items and associated actions. */
 330 static const struct mlx5_flow_items mlx5_flow_items[] = {
 331         [RTE_FLOW_ITEM_TYPE_END] = {
 332                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 333                                RTE_FLOW_ITEM_TYPE_VXLAN,
 334                                RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 335                                RTE_FLOW_ITEM_TYPE_GRE),
 336         },
 337         [RTE_FLOW_ITEM_TYPE_ETH] = {
 338                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VLAN,
 339                                RTE_FLOW_ITEM_TYPE_IPV4,
 340                                RTE_FLOW_ITEM_TYPE_IPV6),
 341                 .actions = valid_actions,
 342                 .mask = &(const struct rte_flow_item_eth){
 343                         .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 344                         .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 345                         .type = -1,
 346                 },
 347                 .default_mask = &rte_flow_item_eth_mask,
 348                 .mask_sz = sizeof(struct rte_flow_item_eth),
 349                 .convert = mlx5_flow_create_eth,
 350                 .dst_sz = sizeof(struct ibv_flow_spec_eth),
 351         },
 352         [RTE_FLOW_ITEM_TYPE_VLAN] = {
 353                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_IPV4,
 354                                RTE_FLOW_ITEM_TYPE_IPV6),
 355                 .actions = valid_actions,
 356                 .mask = &(const struct rte_flow_item_vlan){
 357                         .tci = -1,
 358                         .inner_type = -1,
 359                 },
 360                 .default_mask = &rte_flow_item_vlan_mask,
 361                 .mask_sz = sizeof(struct rte_flow_item_vlan),
 362                 .convert = mlx5_flow_create_vlan,
 363                 .dst_sz = 0,
 364         },
 365         [RTE_FLOW_ITEM_TYPE_IPV4] = {
 366                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 367                                RTE_FLOW_ITEM_TYPE_TCP,
 368                                RTE_FLOW_ITEM_TYPE_GRE),
 369                 .actions = valid_actions,
 370                 .mask = &(const struct rte_flow_item_ipv4){
 371                         .hdr = {
 372                                 .src_addr = -1,
 373                                 .dst_addr = -1,
 374                                 .type_of_service = -1,
 375                                 .next_proto_id = -1,
 376                         },
 377                 },
 378                 .default_mask = &rte_flow_item_ipv4_mask,
 379                 .mask_sz = sizeof(struct rte_flow_item_ipv4),
 380                 .convert = mlx5_flow_create_ipv4,
 381                 .dst_sz = sizeof(struct ibv_flow_spec_ipv4_ext),
 382         },
 383         [RTE_FLOW_ITEM_TYPE_IPV6] = {
 384                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_UDP,
 385                                RTE_FLOW_ITEM_TYPE_TCP,
 386                                RTE_FLOW_ITEM_TYPE_GRE),
 387                 .actions = valid_actions,
 388                 .mask = &(const struct rte_flow_item_ipv6){
 389                         .hdr = {
 390                                 .src_addr = {
 391                                         0xff, 0xff, 0xff, 0xff,
 392                                         0xff, 0xff, 0xff, 0xff,
 393                                         0xff, 0xff, 0xff, 0xff,
 394                                         0xff, 0xff, 0xff, 0xff,
 395                                 },
 396                                 .dst_addr = {
 397                                         0xff, 0xff, 0xff, 0xff,
 398                                         0xff, 0xff, 0xff, 0xff,
 399                                         0xff, 0xff, 0xff, 0xff,
 400                                         0xff, 0xff, 0xff, 0xff,
 401                                 },
 402                                 .vtc_flow = -1,
 403                                 .proto = -1,
 404                                 .hop_limits = -1,
 405                         },
 406                 },
 407                 .default_mask = &rte_flow_item_ipv6_mask,
 408                 .mask_sz = sizeof(struct rte_flow_item_ipv6),
 409                 .convert = mlx5_flow_create_ipv6,
 410                 .dst_sz = sizeof(struct ibv_flow_spec_ipv6),
 411         },
 412         [RTE_FLOW_ITEM_TYPE_UDP] = {
 413                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_VXLAN,
 414                                RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 415                                RTE_FLOW_ITEM_TYPE_MPLS),
 416                 .actions = valid_actions,
 417                 .mask = &(const struct rte_flow_item_udp){
 418                         .hdr = {
 419                                 .src_port = -1,
 420                                 .dst_port = -1,
 421                         },
 422                 },
 423                 .default_mask = &rte_flow_item_udp_mask,
 424                 .mask_sz = sizeof(struct rte_flow_item_udp),
 425                 .convert = mlx5_flow_create_udp,
 426                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 427         },
 428         [RTE_FLOW_ITEM_TYPE_TCP] = {
 429                 .actions = valid_actions,
 430                 .mask = &(const struct rte_flow_item_tcp){
 431                         .hdr = {
 432                                 .src_port = -1,
 433                                 .dst_port = -1,
 434                         },
 435                 },
 436                 .default_mask = &rte_flow_item_tcp_mask,
 437                 .mask_sz = sizeof(struct rte_flow_item_tcp),
 438                 .convert = mlx5_flow_create_tcp,
 439                 .dst_sz = sizeof(struct ibv_flow_spec_tcp_udp),
 440         },
 441         [RTE_FLOW_ITEM_TYPE_GRE] = {
 442                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 443                                RTE_FLOW_ITEM_TYPE_IPV4,
 444                                RTE_FLOW_ITEM_TYPE_IPV6,
 445                                RTE_FLOW_ITEM_TYPE_MPLS),
 446                 .actions = valid_actions,
 447                 .mask = &(const struct rte_flow_item_gre){
 448                         .protocol = -1,
 449                 },
 450                 .default_mask = &rte_flow_item_gre_mask,
 451                 .mask_sz = sizeof(struct rte_flow_item_gre),
 452                 .convert = mlx5_flow_create_gre,
 453 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
 454                 .dst_sz = sizeof(struct ibv_flow_spec_gre),
 455 #else
 456                 .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
 457 #endif
 458         },
 459         [RTE_FLOW_ITEM_TYPE_MPLS] = {
 460                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 461                                RTE_FLOW_ITEM_TYPE_IPV4,
 462                                RTE_FLOW_ITEM_TYPE_IPV6),
 463                 .actions = valid_actions,
 464                 .mask = &(const struct rte_flow_item_mpls){
 465                         .label_tc_s = "\xff\xff\xf0",
 466                 },
 467                 .default_mask = &rte_flow_item_mpls_mask,
 468                 .mask_sz = sizeof(struct rte_flow_item_mpls),
 469                 .convert = mlx5_flow_create_mpls,
 470 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
 471                 .dst_sz = sizeof(struct ibv_flow_spec_mpls),
 472 #endif
 473         },
 474         [RTE_FLOW_ITEM_TYPE_VXLAN] = {
 475                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 476                                RTE_FLOW_ITEM_TYPE_IPV4, /* For L3 VXLAN. */
 477                                RTE_FLOW_ITEM_TYPE_IPV6), /* For L3 VXLAN. */
 478                 .actions = valid_actions,
 479                 .mask = &(const struct rte_flow_item_vxlan){
 480                         .vni = "\xff\xff\xff",
 481                 },
 482                 .default_mask = &rte_flow_item_vxlan_mask,
 483                 .mask_sz = sizeof(struct rte_flow_item_vxlan),
 484                 .convert = mlx5_flow_create_vxlan,
 485                 .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
 486         },
 487         [RTE_FLOW_ITEM_TYPE_VXLAN_GPE] = {
 488                 .items = ITEMS(RTE_FLOW_ITEM_TYPE_ETH,
 489                                RTE_FLOW_ITEM_TYPE_IPV4,
 490                                RTE_FLOW_ITEM_TYPE_IPV6),
 491                 .actions = valid_actions,
 492                 .mask = &(const struct rte_flow_item_vxlan_gpe){
 493                         .vni = "\xff\xff\xff",
 494                 },
 495                 .default_mask = &rte_flow_item_vxlan_gpe_mask,
 496                 .mask_sz = sizeof(struct rte_flow_item_vxlan_gpe),
 497                 .convert = mlx5_flow_create_vxlan_gpe,
 498                 .dst_sz = sizeof(struct ibv_flow_spec_tunnel),
 499         },
 500 };
 501
 502 /** Structure to pass to the conversion function. */
 503 struct mlx5_flow_parse {
 504         uint32_t inner; /**< Verbs value, set once tunnel is encountered. */
 505         uint32_t create:1;
 506         /**< Whether resources should remain after a validate. */
 507         uint32_t drop:1; /**< Target is a drop queue. */
 508         uint32_t mark:1; /**< Mark is present in the flow. */
 509         uint32_t count:1; /**< Count is present in the flow. */
 510         uint32_t mark_id; /**< Mark identifier. */
 511         struct rte_flow_action_rss rss_conf; /**< RSS configuration */
 512         uint16_t queues[RTE_MAX_QUEUES_PER_PORT]; /**< Queues indexes to use. */
 513         uint8_t rss_key[40]; /**< copy of the RSS key. */
 514         enum hash_rxq_type layer; /**< Last pattern layer detected. */
 515         enum hash_rxq_type out_layer; /**< Last outer pattern layer detected. */
 516         uint32_t tunnel; /**< Tunnel type of RTE_PTYPE_TUNNEL_XXX. */
 517         struct ibv_counter_set *cs; /**< Holds the counter set for the rule */
 518         struct {
 519                 struct ibv_flow_attr *ibv_attr;
 520                 /**< Pointer to Verbs attributes. */
 521                 unsigned int offset;
 522                 /**< Current position or total size of the attribute. */
 523                 uint64_t hash_fields; /**< Verbs hash fields. */
 524         } queue[RTE_DIM(hash_rxq_init)];
 525 };
 526
 527 static const struct rte_flow_ops mlx5_flow_ops = {
 528         .validate = mlx5_flow_validate,
 529         .create = mlx5_flow_create,
 530         .destroy = mlx5_flow_destroy,
 531         .flush = mlx5_flow_flush,
 532 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
 533         .query = mlx5_flow_query,
 534 #else
 535         .query = NULL,
 536 #endif
 537         .isolate = mlx5_flow_isolate,
 538 };
 539
 540 /* Convert FDIR request to Generic flow. */
 541 struct mlx5_fdir {
 542         struct rte_flow_attr attr;
 543         struct rte_flow_action actions[2];
 544         struct rte_flow_item items[4];
 545         struct rte_flow_item_eth l2;
 546         struct rte_flow_item_eth l2_mask;
 547         union {
 548                 struct rte_flow_item_ipv4 ipv4;
 549                 struct rte_flow_item_ipv6 ipv6;
 550         } l3;
 551         union {
 552                 struct rte_flow_item_ipv4 ipv4;
 553                 struct rte_flow_item_ipv6 ipv6;
 554         } l3_mask;
 555         union {
 556                 struct rte_flow_item_udp udp;
 557                 struct rte_flow_item_tcp tcp;
 558         } l4;
 559         union {
 560                 struct rte_flow_item_udp udp;
 561                 struct rte_flow_item_tcp tcp;
 562         } l4_mask;
 563         struct rte_flow_action_queue queue;
 564 };
 565
 566 /* Verbs specification header. */
 567 struct ibv_spec_header {
 568         enum ibv_flow_spec_type type;
 569         uint16_t size;
 570 };
 571
 572 /**
 573  * Check item is fully supported by the NIC matching capability.
 574  *
 575  * @param item[in]
 576  *   Item specification.
 577  * @param mask[in]
 578  *   Bit-masks covering supported fields to compare with spec, last and mask in
 579  *   \item.
 580  * @param size
 581  *   Bit-Mask size in bytes.
 582  *
 583  * @return
 584  *   0 on success, a negative errno value otherwise and rte_errno is set.
 585  */
 586 static int
 587 mlx5_flow_item_validate(const struct rte_flow_item *item,
 588                         const uint8_t *mask, unsigned int size)
 589 {
 590         unsigned int i;
 591         const uint8_t *spec = item->spec;
 592         const uint8_t *last = item->last;
 593         const uint8_t *m = item->mask ? item->mask : mask;
 594
 595         if (!spec && (item->mask || last))
 596                 goto error;
 597         if (!spec)
 598                 return 0;
 599         /*
 600          * Single-pass check to make sure that:
 601          * - item->mask is supported, no bits are set outside mask.
 602          * - Both masked item->spec and item->last are equal (no range
 603          *   supported).
 604          */
 605         for (i = 0; i < size; i++) {
 606                 if (!m[i])
 607                         continue;
 608                 if ((m[i] | mask[i]) != mask[i])
 609                         goto error;
 610                 if (last && ((spec[i] & m[i]) != (last[i] & m[i])))
 611                         goto error;
 612         }
 613         return 0;
 614 error:
 615         rte_errno = ENOTSUP;
 616         return -rte_errno;
 617 }
 618
 619 /**
 620  * Extract attribute to the parser.
 621  *
 622  * @param[in] attr
 623  *   Flow rule attributes.
 624  * @param[out] error
 625  *   Perform verbose error reporting if not NULL.
 626  *
 627  * @return
 628  *   0 on success, a negative errno value otherwise and rte_errno is set.
 629  */
 630 static int
 631 mlx5_flow_convert_attributes(const struct rte_flow_attr *attr,
 632                              struct rte_flow_error *error)
 633 {
 634         if (attr->group) {
 635                 rte_flow_error_set(error, ENOTSUP,
 636                                    RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 637                                    NULL,
 638                                    "groups are not supported");
 639                 return -rte_errno;
 640         }
 641         if (attr->priority && attr->priority != MLX5_CTRL_FLOW_PRIORITY) {
 642                 rte_flow_error_set(error, ENOTSUP,
 643                                    RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 644                                    NULL,
 645                                    "priorities are not supported");
 646                 return -rte_errno;
 647         }
 648         if (attr->egress) {
 649                 rte_flow_error_set(error, ENOTSUP,
 650                                    RTE_FLOW_ERROR_TYPE_ATTR_EGRESS,
 651                                    NULL,
 652                                    "egress is not supported");
 653                 return -rte_errno;
 654         }
 655         if (attr->transfer) {
 656                 rte_flow_error_set(error, ENOTSUP,
 657                                    RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
 658                                    NULL,
 659                                    "transfer is not supported");
 660                 return -rte_errno;
 661         }
 662         if (!attr->ingress) {
 663                 rte_flow_error_set(error, ENOTSUP,
 664                                    RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 665                                    NULL,
 666                                    "only ingress is supported");
 667                 return -rte_errno;
 668         }
 669         return 0;
 670 }
 671
 672 /**
 673  * Extract actions request to the parser.
 674  *
 675  * @param dev
 676  *   Pointer to Ethernet device.
 677  * @param[in] actions
 678  *   Associated actions (list terminated by the END action).
 679  * @param[out] error
 680  *   Perform verbose error reporting if not NULL.
 681  * @param[in, out] parser
 682  *   Internal parser structure.
 683  *
 684  * @return
 685  *   0 on success, a negative errno value otherwise and rte_errno is set.
 686  */
 687 static int
 688 mlx5_flow_convert_actions(struct rte_eth_dev *dev,
 689                           const struct rte_flow_action actions[],
 690                           struct rte_flow_error *error,
 691                           struct mlx5_flow_parse *parser)
 692 {
 693         enum { FATE = 1, MARK = 2, COUNT = 4, };
 694         uint32_t overlap = 0;
 695         struct priv *priv = dev->data->dev_private;
 696
 697         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; ++actions) {
 698                 if (actions->type == RTE_FLOW_ACTION_TYPE_VOID) {
 699                         continue;
 700                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_DROP) {
 701                         if (overlap & FATE)
 702                                 goto exit_action_overlap;
 703                         overlap |= FATE;
 704                         parser->drop = 1;
 705                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
 706                         const struct rte_flow_action_queue *queue =
 707                                 (const struct rte_flow_action_queue *)
 708                                 actions->conf;
 709
 710                         if (overlap & FATE)
 711                                 goto exit_action_overlap;
 712                         overlap |= FATE;
 713                         if (!queue || (queue->index > (priv->rxqs_n - 1)))
 714                                 goto exit_action_not_supported;
 715                         parser->queues[0] = queue->index;
 716                         parser->rss_conf = (struct rte_flow_action_rss){
 717                                 .queue_num = 1,
 718                                 .queue = parser->queues,
 719                         };
 720                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_RSS) {
 721                         const struct rte_flow_action_rss *rss =
 722                                 (const struct rte_flow_action_rss *)
 723                                 actions->conf;
 724                         const uint8_t *rss_key;
 725                         uint32_t rss_key_len;
 726                         uint16_t n;
 727
 728                         if (overlap & FATE)
 729                                 goto exit_action_overlap;
 730                         overlap |= FATE;
 731                         if (rss->func &&
 732                             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ) {
 733                                 rte_flow_error_set(error, EINVAL,
 734                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 735                                                    actions,
 736                                                    "the only supported RSS hash"
 737                                                    " function is Toeplitz");
 738                                 return -rte_errno;
 739                         }
 740 #ifndef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 741                         if (parser->rss_conf.level > 1) {
 742                                 rte_flow_error_set(error, EINVAL,
 743                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 744                                                    actions,
 745                                                    "a nonzero RSS encapsulation"
 746                                                    " level is not supported");
 747                                 return -rte_errno;
 748                         }
 749 #endif
 750                         if (parser->rss_conf.level > 2) {
 751                                 rte_flow_error_set(error, EINVAL,
 752                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 753                                                    actions,
 754                                                    "RSS encapsulation level"
 755                                                    " > 1 is not supported");
 756                                 return -rte_errno;
 757                         }
 758                         if (rss->types & MLX5_RSS_HF_MASK) {
 759                                 rte_flow_error_set(error, EINVAL,
 760                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 761                                                    actions,
 762                                                    "unsupported RSS type"
 763                                                    " requested");
 764                                 return -rte_errno;
 765                         }
 766                         if (rss->key_len) {
 767                                 rss_key_len = rss->key_len;
 768                                 rss_key = rss->key;
 769                         } else {
 770                                 rss_key_len = rss_hash_default_key_len;
 771                                 rss_key = rss_hash_default_key;
 772                         }
 773                         if (rss_key_len != RTE_DIM(parser->rss_key)) {
 774                                 rte_flow_error_set(error, EINVAL,
 775                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 776                                                    actions,
 777                                                    "RSS hash key must be"
 778                                                    " exactly 40 bytes long");
 779                                 return -rte_errno;
 780                         }
 781                         if (!rss->queue_num) {
 782                                 rte_flow_error_set(error, EINVAL,
 783                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 784                                                    actions,
 785                                                    "no valid queues");
 786                                 return -rte_errno;
 787                         }
 788                         if (rss->queue_num > RTE_DIM(parser->queues)) {
 789                                 rte_flow_error_set(error, EINVAL,
 790                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 791                                                    actions,
 792                                                    "too many queues for RSS"
 793                                                    " context");
 794                                 return -rte_errno;
 795                         }
 796                         for (n = 0; n < rss->queue_num; ++n) {
 797                                 if (rss->queue[n] >= priv->rxqs_n) {
 798                                         rte_flow_error_set(error, EINVAL,
 799                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 800                                                    actions,
 801                                                    "queue id > number of"
 802                                                    " queues");
 803                                         return -rte_errno;
 804                                 }
 805                         }
 806                         parser->rss_conf = (struct rte_flow_action_rss){
 807                                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
 808                                 .level = rss->level ? rss->level : 1,
 809                                 .types = rss->types,
 810                                 .key_len = rss_key_len,
 811                                 .queue_num = rss->queue_num,
 812                                 .key = memcpy(parser->rss_key, rss_key,
 813                                               sizeof(*rss_key) * rss_key_len),
 814                                 .queue = memcpy(parser->queues, rss->queue,
 815                                                 sizeof(*rss->queue) *
 816                                                 rss->queue_num),
 817                         };
 818                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_MARK) {
 819                         const struct rte_flow_action_mark *mark =
 820                                 (const struct rte_flow_action_mark *)
 821                                 actions->conf;
 822
 823                         if (overlap & MARK)
 824                                 goto exit_action_overlap;
 825                         overlap |= MARK;
 826                         if (!mark) {
 827                                 rte_flow_error_set(error, EINVAL,
 828                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 829                                                    actions,
 830                                                    "mark must be defined");
 831                                 return -rte_errno;
 832                         } else if (mark->id >= MLX5_FLOW_MARK_MAX) {
 833                                 rte_flow_error_set(error, ENOTSUP,
 834                                                    RTE_FLOW_ERROR_TYPE_ACTION,
 835                                                    actions,
 836                                                    "mark must be between 0"
 837                                                    " and 16777199");
 838                                 return -rte_errno;
 839                         }
 840                         parser->mark = 1;
 841                         parser->mark_id = mark->id;
 842                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_FLAG) {
 843                         if (overlap & MARK)
 844                                 goto exit_action_overlap;
 845                         overlap |= MARK;
 846                         parser->mark = 1;
 847                 } else if (actions->type == RTE_FLOW_ACTION_TYPE_COUNT &&
 848                            priv->config.flow_counter_en) {
 849                         if (overlap & COUNT)
 850                                 goto exit_action_overlap;
 851                         overlap |= COUNT;
 852                         parser->count = 1;
 853                 } else {
 854                         goto exit_action_not_supported;
 855                 }
 856         }
 857         /* When fate is unknown, drop traffic. */
 858         if (!(overlap & FATE))
 859                 parser->drop = 1;
 860         if (parser->drop && parser->mark)
 861                 parser->mark = 0;
 862         if (!parser->rss_conf.queue_num && !parser->drop) {
 863                 rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_HANDLE,
 864                                    NULL, "no valid action");
 865                 return -rte_errno;
 866         }
 867         return 0;
 868 exit_action_not_supported:
 869         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 870                            actions, "action not supported");
 871         return -rte_errno;
 872 exit_action_overlap:
 873         rte_flow_error_set(error, ENOTSUP, RTE_FLOW_ERROR_TYPE_ACTION,
 874                            actions, "overlapping actions are not supported");
 875         return -rte_errno;
 876 }
 877
 878 /**
 879  * Validate items.
 880  *
 881  * @param[in] items
 882  *   Pattern specification (list terminated by the END pattern item).
 883  * @param[out] error
 884  *   Perform verbose error reporting if not NULL.
 885  * @param[in, out] parser
 886  *   Internal parser structure.
 887  *
 888  * @return
 889  *   0 on success, a negative errno value otherwise and rte_errno is set.
 890  */
 891 static int
 892 mlx5_flow_convert_items_validate(struct rte_eth_dev *dev,
 893                                  const struct rte_flow_item items[],
 894                                  struct rte_flow_error *error,
 895                                  struct mlx5_flow_parse *parser)
 896 {
 897         struct priv *priv = dev->data->dev_private;
 898         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
 899         unsigned int i;
 900         unsigned int last_voids = 0;
 901         int ret = 0;
 902
 903         /* Initialise the offsets to start after verbs attribute. */
 904         for (i = 0; i != hash_rxq_init_n; ++i)
 905                 parser->queue[i].offset = sizeof(struct ibv_flow_attr);
 906         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
 907                 const struct mlx5_flow_items *token = NULL;
 908                 unsigned int n;
 909
 910                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID) {
 911                         last_voids++;
 912                         continue;
 913                 }
 914                 for (i = 0;
 915                      cur_item->items &&
 916                      cur_item->items[i] != RTE_FLOW_ITEM_TYPE_END;
 917                      ++i) {
 918                         if (cur_item->items[i] == items->type) {
 919                                 token = &mlx5_flow_items[items->type];
 920                                 break;
 921                         }
 922                 }
 923                 if (!token) {
 924                         ret = -ENOTSUP;
 925                         goto exit_item_not_supported;
 926                 }
 927                 cur_item = token;
 928                 ret = mlx5_flow_item_validate(items,
 929                                               (const uint8_t *)cur_item->mask,
 930                                               cur_item->mask_sz);
 931                 if (ret)
 932                         goto exit_item_not_supported;
 933                 if (IS_TUNNEL(items->type)) {
 934                         if (parser->tunnel &&
 935                             !((items - last_voids - 1)->type ==
 936                               RTE_FLOW_ITEM_TYPE_GRE && items->type ==
 937                               RTE_FLOW_ITEM_TYPE_MPLS)) {
 938                                 rte_flow_error_set(error, ENOTSUP,
 939                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 940                                                    items,
 941                                                    "Cannot recognize multiple"
 942                                                    " tunnel encapsulations.");
 943                                 return -rte_errno;
 944                         }
 945                         if (items->type == RTE_FLOW_ITEM_TYPE_MPLS &&
 946                             !priv->config.mpls_en) {
 947                                 rte_flow_error_set(error, ENOTSUP,
 948                                                    RTE_FLOW_ERROR_TYPE_ITEM,
 949                                                    items,
 950                                                    "MPLS not supported or"
 951                                                    " disabled in firmware"
 952                                                    " configuration.");
 953                                 return -rte_errno;
 954                         }
 955                         if (!priv->config.tunnel_en &&
 956                             parser->rss_conf.level > 1) {
 957                                 rte_flow_error_set(error, ENOTSUP,
 958                                         RTE_FLOW_ERROR_TYPE_ITEM,
 959                                         items,
 960                                         "RSS on tunnel is not supported");
 961                                 return -rte_errno;
 962                         }
 963                         parser->inner = IBV_FLOW_SPEC_INNER;
 964                         parser->tunnel = flow_ptype[items->type];
 965                 }
 966                 if (parser->drop) {
 967                         parser->queue[HASH_RXQ_ETH].offset += cur_item->dst_sz;
 968                 } else {
 969                         for (n = 0; n != hash_rxq_init_n; ++n)
 970                                 parser->queue[n].offset += cur_item->dst_sz;
 971                 }
 972                 last_voids = 0;
 973         }
 974         if (parser->drop) {
 975                 parser->queue[HASH_RXQ_ETH].offset +=
 976                         sizeof(struct ibv_flow_spec_action_drop);
 977         }
 978         if (parser->mark) {
 979                 for (i = 0; i != hash_rxq_init_n; ++i)
 980                         parser->queue[i].offset +=
 981                                 sizeof(struct ibv_flow_spec_action_tag);
 982         }
 983         if (parser->count) {
 984                 unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
 985
 986                 for (i = 0; i != hash_rxq_init_n; ++i)
 987                         parser->queue[i].offset += size;
 988         }
 989         return 0;
 990 exit_item_not_supported:
 991         return rte_flow_error_set(error, -ret, RTE_FLOW_ERROR_TYPE_ITEM,
 992                                   items, "item not supported");
 993 }
 994
 995 /**
 996  * Allocate memory space to store verbs flow attributes.
 997  *
 998  * @param[in] size
 999  *   Amount of byte to allocate.
1000  * @param[out] error
1001  *   Perform verbose error reporting if not NULL.
1002  *
1003  * @return
1004  *   A verbs flow attribute on success, NULL otherwise and rte_errno is set.
1005  */
1006 static struct ibv_flow_attr *
1007 mlx5_flow_convert_allocate(unsigned int size, struct rte_flow_error *error)
1008 {
1009         struct ibv_flow_attr *ibv_attr;
1010
1011         ibv_attr = rte_calloc(__func__, 1, size, 0);
1012         if (!ibv_attr) {
1013                 rte_flow_error_set(error, ENOMEM,
1014                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1015                                    NULL,
1016                                    "cannot allocate verbs spec attributes");
1017                 return NULL;
1018         }
1019         return ibv_attr;
1020 }
1021
1022 /**
1023  * Make inner packet matching with an higher priority from the non Inner
1024  * matching.
1025  *
1026  * @param dev
1027  *   Pointer to Ethernet device.
1028  * @param[in, out] parser
1029  *   Internal parser structure.
1030  * @param attr
1031  *   User flow attribute.
1032  */
1033 static void
1034 mlx5_flow_update_priority(struct rte_eth_dev *dev,
1035                           struct mlx5_flow_parse *parser,
1036                           const struct rte_flow_attr *attr)
1037 {
1038         struct priv *priv = dev->data->dev_private;
1039         unsigned int i;
1040         uint16_t priority;
1041
1042         /*                      8 priorities    >= 16 priorities
1043          * Control flow:        4-7             8-15
1044          * User normal flow:    1-3             4-7
1045          * User tunnel flow:    0-2             0-3
1046          */
1047         priority = attr->priority * MLX5_VERBS_FLOW_PRIO_8;
1048         if (priv->config.max_verbs_prio == MLX5_VERBS_FLOW_PRIO_8)
1049                 priority /= 2;
1050         /*
1051          * Lower non-tunnel flow Verbs priority 1 if only support 8 Verbs
1052          * priorities, lower 4 otherwise.
1053          */
1054         if (!parser->inner) {
1055                 if (priv->config.max_verbs_prio == MLX5_VERBS_FLOW_PRIO_8)
1056                         priority += 1;
1057                 else
1058                         priority += MLX5_VERBS_FLOW_PRIO_8 / 2;
1059         }
1060         if (parser->drop) {
1061                 parser->queue[HASH_RXQ_ETH].ibv_attr->priority = priority +
1062                                 hash_rxq_init[HASH_RXQ_ETH].flow_priority;
1063                 return;
1064         }
1065         for (i = 0; i != hash_rxq_init_n; ++i) {
1066                 if (!parser->queue[i].ibv_attr)
1067                         continue;
1068                 parser->queue[i].ibv_attr->priority = priority +
1069                                 hash_rxq_init[i].flow_priority;
1070         }
1071 }
1072
1073 /**
1074  * Finalise verbs flow attributes.
1075  *
1076  * @param[in, out] parser
1077  *   Internal parser structure.
1078  */
1079 static void
1080 mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
1081 {
1082         unsigned int i;
1083         uint32_t inner = parser->inner;
1084
1085         /* Don't create extra flows for outer RSS. */
1086         if (parser->tunnel && parser->rss_conf.level < 2)
1087                 return;
1088         /*
1089          * Fill missing layers in verbs specifications, or compute the correct
1090          * offset to allocate the memory space for the attributes and
1091          * specifications.
1092          */
1093         for (i = 0; i != hash_rxq_init_n - 1; ++i) {
1094                 union {
1095                         struct ibv_flow_spec_ipv4_ext ipv4;
1096                         struct ibv_flow_spec_ipv6 ipv6;
1097                         struct ibv_flow_spec_tcp_udp udp_tcp;
1098                         struct ibv_flow_spec_eth eth;
1099                 } specs;
1100                 void *dst;
1101                 uint16_t size;
1102
1103                 if (i == parser->layer)
1104                         continue;
1105                 if (parser->layer == HASH_RXQ_ETH ||
1106                     parser->layer == HASH_RXQ_TUNNEL) {
1107                         if (hash_rxq_init[i].ip_version == MLX5_IPV4) {
1108                                 size = sizeof(struct ibv_flow_spec_ipv4_ext);
1109                                 specs.ipv4 = (struct ibv_flow_spec_ipv4_ext){
1110                                         .type = inner | IBV_FLOW_SPEC_IPV4_EXT,
1111                                         .size = size,
1112                                 };
1113                         } else {
1114                                 size = sizeof(struct ibv_flow_spec_ipv6);
1115                                 specs.ipv6 = (struct ibv_flow_spec_ipv6){
1116                                         .type = inner | IBV_FLOW_SPEC_IPV6,
1117                                         .size = size,
1118                                 };
1119                         }
1120                         if (parser->queue[i].ibv_attr) {
1121                                 dst = (void *)((uintptr_t)
1122                                                parser->queue[i].ibv_attr +
1123                                                parser->queue[i].offset);
1124                                 memcpy(dst, &specs, size);
1125                                 ++parser->queue[i].ibv_attr->num_of_specs;
1126                         }
1127                         parser->queue[i].offset += size;
1128                 }
1129                 if ((i == HASH_RXQ_UDPV4) || (i == HASH_RXQ_TCPV4) ||
1130                     (i == HASH_RXQ_UDPV6) || (i == HASH_RXQ_TCPV6)) {
1131                         size = sizeof(struct ibv_flow_spec_tcp_udp);
1132                         specs.udp_tcp = (struct ibv_flow_spec_tcp_udp) {
1133                                 .type = inner | ((i == HASH_RXQ_UDPV4 ||
1134                                           i == HASH_RXQ_UDPV6) ?
1135                                          IBV_FLOW_SPEC_UDP :
1136                                          IBV_FLOW_SPEC_TCP),
1137                                 .size = size,
1138                         };
1139                         if (parser->queue[i].ibv_attr) {
1140                                 dst = (void *)((uintptr_t)
1141                                                parser->queue[i].ibv_attr +
1142                                                parser->queue[i].offset);
1143                                 memcpy(dst, &specs, size);
1144                                 ++parser->queue[i].ibv_attr->num_of_specs;
1145                         }
1146                         parser->queue[i].offset += size;
1147                 }
1148         }
1149 }
1150
1151 /**
1152  * Update flows according to pattern and RSS hash fields.
1153  *
1154  * @param[in, out] parser
1155  *   Internal parser structure.
1156  *
1157  * @return
1158  *   0 on success, a negative errno value otherwise and rte_errno is set.
1159  */
1160 static int
1161 mlx5_flow_convert_rss(struct mlx5_flow_parse *parser)
1162 {
1163         unsigned int i;
1164         enum hash_rxq_type start;
1165         enum hash_rxq_type layer;
1166         int outer = parser->tunnel && parser->rss_conf.level < 2;
1167         uint64_t rss = parser->rss_conf.types;
1168
1169         layer = outer ? parser->out_layer : parser->layer;
1170         if (layer == HASH_RXQ_TUNNEL)
1171                 layer = HASH_RXQ_ETH;
1172         if (outer) {
1173                 /* Only one hash type for outer RSS. */
1174                 if (rss && layer == HASH_RXQ_ETH) {
1175                         start = HASH_RXQ_TCPV4;
1176                 } else if (rss && layer != HASH_RXQ_ETH &&
1177                            !(rss & hash_rxq_init[layer].dpdk_rss_hf)) {
1178                         /* If RSS not match L4 pattern, try L3 RSS. */
1179                         if (layer < HASH_RXQ_IPV4)
1180                                 layer = HASH_RXQ_IPV4;
1181                         else if (layer > HASH_RXQ_IPV4 && layer < HASH_RXQ_IPV6)
1182                                 layer = HASH_RXQ_IPV6;
1183                         start = layer;
1184                 } else {
1185                         start = layer;
1186                 }
1187                 /* Scan first valid hash type. */
1188                 for (i = start; rss && i <= layer; ++i) {
1189                         if (!parser->queue[i].ibv_attr)
1190                                 continue;
1191                         if (hash_rxq_init[i].dpdk_rss_hf & rss)
1192                                 break;
1193                 }
1194                 if (rss && i <= layer)
1195                         parser->queue[layer].hash_fields =
1196                                         hash_rxq_init[i].hash_fields;
1197                 /* Trim unused hash types. */
1198                 for (i = 0; i != hash_rxq_init_n; ++i) {
1199                         if (parser->queue[i].ibv_attr && i != layer) {
1200                                 rte_free(parser->queue[i].ibv_attr);
1201                                 parser->queue[i].ibv_attr = NULL;
1202                         }
1203                 }
1204         } else {
1205                 /* Expand for inner or normal RSS. */
1206                 if (rss && (layer == HASH_RXQ_ETH || layer == HASH_RXQ_IPV4))
1207                         start = HASH_RXQ_TCPV4;
1208                 else if (rss && layer == HASH_RXQ_IPV6)
1209                         start = HASH_RXQ_TCPV6;
1210                 else
1211                         start = layer;
1212                 /* For L4 pattern, try L3 RSS if no L4 RSS. */
1213                 /* Trim unused hash types. */
1214                 for (i = 0; i != hash_rxq_init_n; ++i) {
1215                         if (!parser->queue[i].ibv_attr)
1216                                 continue;
1217                         if (i < start || i > layer) {
1218                                 rte_free(parser->queue[i].ibv_attr);
1219                                 parser->queue[i].ibv_attr = NULL;
1220                                 continue;
1221                         }
1222                         if (!rss)
1223                                 continue;
1224                         if (hash_rxq_init[i].dpdk_rss_hf & rss) {
1225                                 parser->queue[i].hash_fields =
1226                                                 hash_rxq_init[i].hash_fields;
1227                         } else if (i != layer) {
1228                                 /* Remove unused RSS expansion. */
1229                                 rte_free(parser->queue[i].ibv_attr);
1230                                 parser->queue[i].ibv_attr = NULL;
1231                         } else if (layer < HASH_RXQ_IPV4 &&
1232                                    (hash_rxq_init[HASH_RXQ_IPV4].dpdk_rss_hf &
1233                                     rss)) {
1234                                 /* Allow IPv4 RSS on L4 pattern. */
1235                                 parser->queue[i].hash_fields =
1236                                         hash_rxq_init[HASH_RXQ_IPV4]
1237                                                 .hash_fields;
1238                         } else if (i > HASH_RXQ_IPV4 && i < HASH_RXQ_IPV6 &&
1239                                    (hash_rxq_init[HASH_RXQ_IPV6].dpdk_rss_hf &
1240                                     rss)) {
1241                                 /* Allow IPv4 RSS on L4 pattern. */
1242                                 parser->queue[i].hash_fields =
1243                                         hash_rxq_init[HASH_RXQ_IPV6]
1244                                                 .hash_fields;
1245                         }
1246                 }
1247         }
1248         return 0;
1249 }
1250
1251 /**
1252  * Validate and convert a flow supported by the NIC.
1253  *
1254  * @param dev
1255  *   Pointer to Ethernet device.
1256  * @param[in] attr
1257  *   Flow rule attributes.
1258  * @param[in] pattern
1259  *   Pattern specification (list terminated by the END pattern item).
1260  * @param[in] actions
1261  *   Associated actions (list terminated by the END action).
1262  * @param[out] error
1263  *   Perform verbose error reporting if not NULL.
1264  * @param[in, out] parser
1265  *   Internal parser structure.
1266  *
1267  * @return
1268  *   0 on success, a negative errno value otherwise and rte_errno is set.
1269  */
1270 static int
1271 mlx5_flow_convert(struct rte_eth_dev *dev,
1272                   const struct rte_flow_attr *attr,
1273                   const struct rte_flow_item items[],
1274                   const struct rte_flow_action actions[],
1275                   struct rte_flow_error *error,
1276                   struct mlx5_flow_parse *parser)
1277 {
1278         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
1279         unsigned int i;
1280         int ret;
1281
1282         /* First step. Validate the attributes, items and actions. */
1283         *parser = (struct mlx5_flow_parse){
1284                 .create = parser->create,
1285                 .layer = HASH_RXQ_ETH,
1286                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1287         };
1288         ret = mlx5_flow_convert_attributes(attr, error);
1289         if (ret)
1290                 return ret;
1291         ret = mlx5_flow_convert_actions(dev, actions, error, parser);
1292         if (ret)
1293                 return ret;
1294         ret = mlx5_flow_convert_items_validate(dev, items, error, parser);
1295         if (ret)
1296                 return ret;
1297         mlx5_flow_convert_finalise(parser);
1298         /*
1299          * Second step.
1300          * Allocate the memory space to store verbs specifications.
1301          */
1302         if (parser->drop) {
1303                 unsigned int offset = parser->queue[HASH_RXQ_ETH].offset;
1304
1305                 parser->queue[HASH_RXQ_ETH].ibv_attr =
1306                         mlx5_flow_convert_allocate(offset, error);
1307                 if (!parser->queue[HASH_RXQ_ETH].ibv_attr)
1308                         goto exit_enomem;
1309                 parser->queue[HASH_RXQ_ETH].offset =
1310                         sizeof(struct ibv_flow_attr);
1311         } else {
1312                 for (i = 0; i != hash_rxq_init_n; ++i) {
1313                         unsigned int offset;
1314
1315                         offset = parser->queue[i].offset;
1316                         parser->queue[i].ibv_attr =
1317                                 mlx5_flow_convert_allocate(offset, error);
1318                         if (!parser->queue[i].ibv_attr)
1319                                 goto exit_enomem;
1320                         parser->queue[i].offset = sizeof(struct ibv_flow_attr);
1321                 }
1322         }
1323         /* Third step. Conversion parse, fill the specifications. */
1324         parser->inner = 0;
1325         parser->tunnel = 0;
1326         parser->layer = HASH_RXQ_ETH;
1327         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
1328                 struct mlx5_flow_data data = {
1329                         .dev = dev,
1330                         .parser = parser,
1331                         .error = error,
1332                 };
1333
1334                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
1335                         continue;
1336                 cur_item = &mlx5_flow_items[items->type];
1337                 ret = cur_item->convert(items,
1338                                         (cur_item->default_mask ?
1339                                          cur_item->default_mask :
1340                                          cur_item->mask),
1341                                          &data);
1342                 if (ret)
1343                         goto exit_free;
1344         }
1345         if (!parser->drop) {
1346                 /* RSS check, remove unused hash types. */
1347                 ret = mlx5_flow_convert_rss(parser);
1348                 if (ret)
1349                         goto exit_free;
1350                 /* Complete missing specification. */
1351                 mlx5_flow_convert_finalise(parser);
1352         }
1353         mlx5_flow_update_priority(dev, parser, attr);
1354         if (parser->mark)
1355                 mlx5_flow_create_flag_mark(parser, parser->mark_id);
1356         if (parser->count && parser->create) {
1357                 mlx5_flow_create_count(dev, parser);
1358                 if (!parser->cs)
1359                         goto exit_count_error;
1360         }
1361 exit_free:
1362         /* Only verification is expected, all resources should be released. */
1363         if (!parser->create) {
1364                 for (i = 0; i != hash_rxq_init_n; ++i) {
1365                         if (parser->queue[i].ibv_attr) {
1366                                 rte_free(parser->queue[i].ibv_attr);
1367                                 parser->queue[i].ibv_attr = NULL;
1368                         }
1369                 }
1370         }
1371         return ret;
1372 exit_enomem:
1373         for (i = 0; i != hash_rxq_init_n; ++i) {
1374                 if (parser->queue[i].ibv_attr) {
1375                         rte_free(parser->queue[i].ibv_attr);
1376                         parser->queue[i].ibv_attr = NULL;
1377                 }
1378         }
1379         rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1380                            NULL, "cannot allocate verbs spec attributes");
1381         return -rte_errno;
1382 exit_count_error:
1383         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1384                            NULL, "cannot create counter");
1385         return -rte_errno;
1386 }
1387
1388 /**
1389  * Copy the specification created into the flow.
1390  *
1391  * @param parser
1392  *   Internal parser structure.
1393  * @param src
1394  *   Create specification.
1395  * @param size
1396  *   Size in bytes of the specification to copy.
1397  */
1398 static void
1399 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
1400                       unsigned int size)
1401 {
1402         unsigned int i;
1403         void *dst;
1404
1405         for (i = 0; i != hash_rxq_init_n; ++i) {
1406                 if (!parser->queue[i].ibv_attr)
1407                         continue;
1408                 dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1409                                 parser->queue[i].offset);
1410                 memcpy(dst, src, size);
1411                 ++parser->queue[i].ibv_attr->num_of_specs;
1412                 parser->queue[i].offset += size;
1413         }
1414 }
1415
1416 /**
1417  * Convert Ethernet item to Verbs specification.
1418  *
1419  * @param item[in]
1420  *   Item specification.
1421  * @param default_mask[in]
1422  *   Default bit-masks to use when item->mask is not provided.
1423  * @param data[in, out]
1424  *   User structure.
1425  *
1426  * @return
1427  *   0 on success, a negative errno value otherwise and rte_errno is set.
1428  */
1429 static int
1430 mlx5_flow_create_eth(const struct rte_flow_item *item,
1431                      const void *default_mask,
1432                      struct mlx5_flow_data *data)
1433 {
1434         const struct rte_flow_item_eth *spec = item->spec;
1435         const struct rte_flow_item_eth *mask = item->mask;
1436         struct mlx5_flow_parse *parser = data->parser;
1437         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1438         struct ibv_flow_spec_eth eth = {
1439                 .type = parser->inner | IBV_FLOW_SPEC_ETH,
1440                 .size = eth_size,
1441         };
1442
1443         parser->layer = HASH_RXQ_ETH;
1444         if (spec) {
1445                 unsigned int i;
1446
1447                 if (!mask)
1448                         mask = default_mask;
1449                 memcpy(&eth.val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
1450                 memcpy(&eth.val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
1451                 eth.val.ether_type = spec->type;
1452                 memcpy(&eth.mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
1453                 memcpy(&eth.mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
1454                 eth.mask.ether_type = mask->type;
1455                 /* Remove unwanted bits from values. */
1456                 for (i = 0; i < ETHER_ADDR_LEN; ++i) {
1457                         eth.val.dst_mac[i] &= eth.mask.dst_mac[i];
1458                         eth.val.src_mac[i] &= eth.mask.src_mac[i];
1459                 }
1460                 eth.val.ether_type &= eth.mask.ether_type;
1461         }
1462         mlx5_flow_create_copy(parser, &eth, eth_size);
1463         return 0;
1464 }
1465
1466 /**
1467  * Convert VLAN item to Verbs specification.
1468  *
1469  * @param item[in]
1470  *   Item specification.
1471  * @param default_mask[in]
1472  *   Default bit-masks to use when item->mask is not provided.
1473  * @param data[in, out]
1474  *   User structure.
1475  *
1476  * @return
1477  *   0 on success, a negative errno value otherwise and rte_errno is set.
1478  */
1479 static int
1480 mlx5_flow_create_vlan(const struct rte_flow_item *item,
1481                       const void *default_mask,
1482                       struct mlx5_flow_data *data)
1483 {
1484         const struct rte_flow_item_vlan *spec = item->spec;
1485         const struct rte_flow_item_vlan *mask = item->mask;
1486         struct mlx5_flow_parse *parser = data->parser;
1487         struct ibv_flow_spec_eth *eth;
1488         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1489         const char *msg = "VLAN cannot be empty";
1490
1491         if (spec) {
1492                 unsigned int i;
1493                 if (!mask)
1494                         mask = default_mask;
1495
1496                 for (i = 0; i != hash_rxq_init_n; ++i) {
1497                         if (!parser->queue[i].ibv_attr)
1498                                 continue;
1499
1500                         eth = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1501                                        parser->queue[i].offset - eth_size);
1502                         eth->val.vlan_tag = spec->tci;
1503                         eth->mask.vlan_tag = mask->tci;
1504                         eth->val.vlan_tag &= eth->mask.vlan_tag;
1505                         /*
1506                          * From verbs perspective an empty VLAN is equivalent
1507                          * to a packet without VLAN layer.
1508                          */
1509                         if (!eth->mask.vlan_tag)
1510                                 goto error;
1511                         /* Outer TPID cannot be matched. */
1512                         if (eth->mask.ether_type) {
1513                                 msg = "VLAN TPID matching is not supported";
1514                                 goto error;
1515                         }
1516                         eth->val.ether_type = spec->inner_type;
1517                         eth->mask.ether_type = mask->inner_type;
1518                         eth->val.ether_type &= eth->mask.ether_type;
1519                 }
1520                 return 0;
1521         }
1522 error:
1523         return rte_flow_error_set(data->error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
1524                                   item, msg);
1525 }
1526
1527 /**
1528  * Convert IPv4 item to Verbs specification.
1529  *
1530  * @param item[in]
1531  *   Item specification.
1532  * @param default_mask[in]
1533  *   Default bit-masks to use when item->mask is not provided.
1534  * @param data[in, out]
1535  *   User structure.
1536  *
1537  * @return
1538  *   0 on success, a negative errno value otherwise and rte_errno is set.
1539  */
1540 static int
1541 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
1542                       const void *default_mask,
1543                       struct mlx5_flow_data *data)
1544 {
1545         struct priv *priv = data->dev->data->dev_private;
1546         const struct rte_flow_item_ipv4 *spec = item->spec;
1547         const struct rte_flow_item_ipv4 *mask = item->mask;
1548         struct mlx5_flow_parse *parser = data->parser;
1549         unsigned int ipv4_size = sizeof(struct ibv_flow_spec_ipv4_ext);
1550         struct ibv_flow_spec_ipv4_ext ipv4 = {
1551                 .type = parser->inner | IBV_FLOW_SPEC_IPV4_EXT,
1552                 .size = ipv4_size,
1553         };
1554
1555         if (parser->layer == HASH_RXQ_TUNNEL &&
1556             parser->tunnel == ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)] &&
1557             !priv->config.l3_vxlan_en)
1558                 return rte_flow_error_set(data->error, EINVAL,
1559                                           RTE_FLOW_ERROR_TYPE_ITEM,
1560                                           item,
1561                                           "L3 VXLAN not enabled by device"
1562                                           " parameter and/or not configured"
1563                                           " in firmware");
1564         parser->layer = HASH_RXQ_IPV4;
1565         if (spec) {
1566                 if (!mask)
1567                         mask = default_mask;
1568                 ipv4.val = (struct ibv_flow_ipv4_ext_filter){
1569                         .src_ip = spec->hdr.src_addr,
1570                         .dst_ip = spec->hdr.dst_addr,
1571                         .proto = spec->hdr.next_proto_id,
1572                         .tos = spec->hdr.type_of_service,
1573                 };
1574                 ipv4.mask = (struct ibv_flow_ipv4_ext_filter){
1575                         .src_ip = mask->hdr.src_addr,
1576                         .dst_ip = mask->hdr.dst_addr,
1577                         .proto = mask->hdr.next_proto_id,
1578                         .tos = mask->hdr.type_of_service,
1579                 };
1580                 /* Remove unwanted bits from values. */
1581                 ipv4.val.src_ip &= ipv4.mask.src_ip;
1582                 ipv4.val.dst_ip &= ipv4.mask.dst_ip;
1583                 ipv4.val.proto &= ipv4.mask.proto;
1584                 ipv4.val.tos &= ipv4.mask.tos;
1585         }
1586         mlx5_flow_create_copy(parser, &ipv4, ipv4_size);
1587         return 0;
1588 }
1589
1590 /**
1591  * Convert IPv6 item to Verbs specification.
1592  *
1593  * @param item[in]
1594  *   Item specification.
1595  * @param default_mask[in]
1596  *   Default bit-masks to use when item->mask is not provided.
1597  * @param data[in, out]
1598  *   User structure.
1599  *
1600  * @return
1601  *   0 on success, a negative errno value otherwise and rte_errno is set.
1602  */
1603 static int
1604 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
1605                       const void *default_mask,
1606                       struct mlx5_flow_data *data)
1607 {
1608         struct priv *priv = data->dev->data->dev_private;
1609         const struct rte_flow_item_ipv6 *spec = item->spec;
1610         const struct rte_flow_item_ipv6 *mask = item->mask;
1611         struct mlx5_flow_parse *parser = data->parser;
1612         unsigned int ipv6_size = sizeof(struct ibv_flow_spec_ipv6);
1613         struct ibv_flow_spec_ipv6 ipv6 = {
1614                 .type = parser->inner | IBV_FLOW_SPEC_IPV6,
1615                 .size = ipv6_size,
1616         };
1617
1618         if (parser->layer == HASH_RXQ_TUNNEL &&
1619             parser->tunnel == ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)] &&
1620             !priv->config.l3_vxlan_en)
1621                 return rte_flow_error_set(data->error, EINVAL,
1622                                           RTE_FLOW_ERROR_TYPE_ITEM,
1623                                           item,
1624                                           "L3 VXLAN not enabled by device"
1625                                           " parameter and/or not configured"
1626                                           " in firmware");
1627         parser->layer = HASH_RXQ_IPV6;
1628         if (spec) {
1629                 unsigned int i;
1630                 uint32_t vtc_flow_val;
1631                 uint32_t vtc_flow_mask;
1632
1633                 if (!mask)
1634                         mask = default_mask;
1635                 memcpy(&ipv6.val.src_ip, spec->hdr.src_addr,
1636                        RTE_DIM(ipv6.val.src_ip));
1637                 memcpy(&ipv6.val.dst_ip, spec->hdr.dst_addr,
1638                        RTE_DIM(ipv6.val.dst_ip));
1639                 memcpy(&ipv6.mask.src_ip, mask->hdr.src_addr,
1640                        RTE_DIM(ipv6.mask.src_ip));
1641                 memcpy(&ipv6.mask.dst_ip, mask->hdr.dst_addr,
1642                        RTE_DIM(ipv6.mask.dst_ip));
1643                 vtc_flow_val = rte_be_to_cpu_32(spec->hdr.vtc_flow);
1644                 vtc_flow_mask = rte_be_to_cpu_32(mask->hdr.vtc_flow);
1645                 ipv6.val.flow_label =
1646                         rte_cpu_to_be_32((vtc_flow_val & IPV6_HDR_FL_MASK) >>
1647                                          IPV6_HDR_FL_SHIFT);
1648                 ipv6.val.traffic_class = (vtc_flow_val & IPV6_HDR_TC_MASK) >>
1649                                          IPV6_HDR_TC_SHIFT;
1650                 ipv6.val.next_hdr = spec->hdr.proto;
1651                 ipv6.val.hop_limit = spec->hdr.hop_limits;
1652                 ipv6.mask.flow_label =
1653                         rte_cpu_to_be_32((vtc_flow_mask & IPV6_HDR_FL_MASK) >>
1654                                          IPV6_HDR_FL_SHIFT);
1655                 ipv6.mask.traffic_class = (vtc_flow_mask & IPV6_HDR_TC_MASK) >>
1656                                           IPV6_HDR_TC_SHIFT;
1657                 ipv6.mask.next_hdr = mask->hdr.proto;
1658                 ipv6.mask.hop_limit = mask->hdr.hop_limits;
1659                 /* Remove unwanted bits from values. */
1660                 for (i = 0; i < RTE_DIM(ipv6.val.src_ip); ++i) {
1661                         ipv6.val.src_ip[i] &= ipv6.mask.src_ip[i];
1662                         ipv6.val.dst_ip[i] &= ipv6.mask.dst_ip[i];
1663                 }
1664                 ipv6.val.flow_label &= ipv6.mask.flow_label;
1665                 ipv6.val.traffic_class &= ipv6.mask.traffic_class;
1666                 ipv6.val.next_hdr &= ipv6.mask.next_hdr;
1667                 ipv6.val.hop_limit &= ipv6.mask.hop_limit;
1668         }
1669         mlx5_flow_create_copy(parser, &ipv6, ipv6_size);
1670         return 0;
1671 }
1672
1673 /**
1674  * Convert UDP item to Verbs specification.
1675  *
1676  * @param item[in]
1677  *   Item specification.
1678  * @param default_mask[in]
1679  *   Default bit-masks to use when item->mask is not provided.
1680  * @param data[in, out]
1681  *   User structure.
1682  *
1683  * @return
1684  *   0 on success, a negative errno value otherwise and rte_errno is set.
1685  */
1686 static int
1687 mlx5_flow_create_udp(const struct rte_flow_item *item,
1688                      const void *default_mask,
1689                      struct mlx5_flow_data *data)
1690 {
1691         const struct rte_flow_item_udp *spec = item->spec;
1692         const struct rte_flow_item_udp *mask = item->mask;
1693         struct mlx5_flow_parse *parser = data->parser;
1694         unsigned int udp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1695         struct ibv_flow_spec_tcp_udp udp = {
1696                 .type = parser->inner | IBV_FLOW_SPEC_UDP,
1697                 .size = udp_size,
1698         };
1699
1700         if (parser->layer == HASH_RXQ_IPV4)
1701                 parser->layer = HASH_RXQ_UDPV4;
1702         else
1703                 parser->layer = HASH_RXQ_UDPV6;
1704         if (spec) {
1705                 if (!mask)
1706                         mask = default_mask;
1707                 udp.val.dst_port = spec->hdr.dst_port;
1708                 udp.val.src_port = spec->hdr.src_port;
1709                 udp.mask.dst_port = mask->hdr.dst_port;
1710                 udp.mask.src_port = mask->hdr.src_port;
1711                 /* Remove unwanted bits from values. */
1712                 udp.val.src_port &= udp.mask.src_port;
1713                 udp.val.dst_port &= udp.mask.dst_port;
1714         }
1715         mlx5_flow_create_copy(parser, &udp, udp_size);
1716         return 0;
1717 }
1718
1719 /**
1720  * Convert TCP item to Verbs specification.
1721  *
1722  * @param item[in]
1723  *   Item specification.
1724  * @param default_mask[in]
1725  *   Default bit-masks to use when item->mask is not provided.
1726  * @param data[in, out]
1727  *   User structure.
1728  *
1729  * @return
1730  *   0 on success, a negative errno value otherwise and rte_errno is set.
1731  */
1732 static int
1733 mlx5_flow_create_tcp(const struct rte_flow_item *item,
1734                      const void *default_mask,
1735                      struct mlx5_flow_data *data)
1736 {
1737         const struct rte_flow_item_tcp *spec = item->spec;
1738         const struct rte_flow_item_tcp *mask = item->mask;
1739         struct mlx5_flow_parse *parser = data->parser;
1740         unsigned int tcp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1741         struct ibv_flow_spec_tcp_udp tcp = {
1742                 .type = parser->inner | IBV_FLOW_SPEC_TCP,
1743                 .size = tcp_size,
1744         };
1745
1746         if (parser->layer == HASH_RXQ_IPV4)
1747                 parser->layer = HASH_RXQ_TCPV4;
1748         else
1749                 parser->layer = HASH_RXQ_TCPV6;
1750         if (spec) {
1751                 if (!mask)
1752                         mask = default_mask;
1753                 tcp.val.dst_port = spec->hdr.dst_port;
1754                 tcp.val.src_port = spec->hdr.src_port;
1755                 tcp.mask.dst_port = mask->hdr.dst_port;
1756                 tcp.mask.src_port = mask->hdr.src_port;
1757                 /* Remove unwanted bits from values. */
1758                 tcp.val.src_port &= tcp.mask.src_port;
1759                 tcp.val.dst_port &= tcp.mask.dst_port;
1760         }
1761         mlx5_flow_create_copy(parser, &tcp, tcp_size);
1762         return 0;
1763 }
1764
1765 /**
1766  * Convert VXLAN item to Verbs specification.
1767  *
1768  * @param item[in]
1769  *   Item specification.
1770  * @param default_mask[in]
1771  *   Default bit-masks to use when item->mask is not provided.
1772  * @param data[in, out]
1773  *   User structure.
1774  *
1775  * @return
1776  *   0 on success, a negative errno value otherwise and rte_errno is set.
1777  */
1778 static int
1779 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
1780                        const void *default_mask,
1781                        struct mlx5_flow_data *data)
1782 {
1783         const struct rte_flow_item_vxlan *spec = item->spec;
1784         const struct rte_flow_item_vxlan *mask = item->mask;
1785         struct mlx5_flow_parse *parser = data->parser;
1786         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1787         struct ibv_flow_spec_tunnel vxlan = {
1788                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1789                 .size = size,
1790         };
1791         union vni {
1792                 uint32_t vlan_id;
1793                 uint8_t vni[4];
1794         } id;
1795
1796         id.vni[0] = 0;
1797         parser->inner = IBV_FLOW_SPEC_INNER;
1798         parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)];
1799         parser->out_layer = parser->layer;
1800         parser->layer = HASH_RXQ_TUNNEL;
1801         if (spec) {
1802                 if (!mask)
1803                         mask = default_mask;
1804                 memcpy(&id.vni[1], spec->vni, 3);
1805                 vxlan.val.tunnel_id = id.vlan_id;
1806                 memcpy(&id.vni[1], mask->vni, 3);
1807                 vxlan.mask.tunnel_id = id.vlan_id;
1808                 /* Remove unwanted bits from values. */
1809                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1810         }
1811         /*
1812          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1813          * layer is defined in the Verbs specification it is interpreted as
1814          * wildcard and all packets will match this rule, if it follows a full
1815          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1816          * before will also match this rule.
1817          * To avoid such situation, VNI 0 is currently refused.
1818          */
1819         /* Only allow tunnel w/o tunnel id pattern after proper outer spec. */
1820         if (parser->out_layer == HASH_RXQ_ETH && !vxlan.val.tunnel_id)
1821                 return rte_flow_error_set(data->error, EINVAL,
1822                                           RTE_FLOW_ERROR_TYPE_ITEM,
1823                                           item,
1824                                           "VxLAN vni cannot be 0");
1825         mlx5_flow_create_copy(parser, &vxlan, size);
1826         return 0;
1827 }
1828
1829 /**
1830  * Convert VXLAN-GPE item to Verbs specification.
1831  *
1832  * @param item[in]
1833  *   Item specification.
1834  * @param default_mask[in]
1835  *   Default bit-masks to use when item->mask is not provided.
1836  * @param data[in, out]
1837  *   User structure.
1838  *
1839  * @return
1840  *   0 on success, a negative errno value otherwise and rte_errno is set.
1841  */
1842 static int
1843 mlx5_flow_create_vxlan_gpe(const struct rte_flow_item *item,
1844                            const void *default_mask,
1845                            struct mlx5_flow_data *data)
1846 {
1847         struct priv *priv = data->dev->data->dev_private;
1848         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1849         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1850         struct mlx5_flow_parse *parser = data->parser;
1851         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1852         struct ibv_flow_spec_tunnel vxlan = {
1853                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1854                 .size = size,
1855         };
1856         union vni {
1857                 uint32_t vlan_id;
1858                 uint8_t vni[4];
1859         } id;
1860
1861         if (!priv->config.l3_vxlan_en)
1862                 return rte_flow_error_set(data->error, EINVAL,
1863                                           RTE_FLOW_ERROR_TYPE_ITEM,
1864                                           item,
1865                                           "L3 VXLAN not enabled by device"
1866                                           " parameter and/or not configured"
1867                                           " in firmware");
1868         id.vni[0] = 0;
1869         parser->inner = IBV_FLOW_SPEC_INNER;
1870         parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN_GPE)];
1871         parser->out_layer = parser->layer;
1872         parser->layer = HASH_RXQ_TUNNEL;
1873         if (spec) {
1874                 if (!mask)
1875                         mask = default_mask;
1876                 memcpy(&id.vni[1], spec->vni, 3);
1877                 vxlan.val.tunnel_id = id.vlan_id;
1878                 memcpy(&id.vni[1], mask->vni, 3);
1879                 vxlan.mask.tunnel_id = id.vlan_id;
1880                 if (spec->protocol)
1881                         return rte_flow_error_set(data->error, EINVAL,
1882                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1883                                                   item,
1884                                                   "VxLAN-GPE protocol not"
1885                                                   " supported");
1886                 /* Remove unwanted bits from values. */
1887                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1888         }
1889         /*
1890          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1891          * layer is defined in the Verbs specification it is interpreted as
1892          * wildcard and all packets will match this rule, if it follows a full
1893          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1894          * before will also match this rule.
1895          * To avoid such situation, VNI 0 is currently refused.
1896          */
1897         /* Only allow tunnel w/o tunnel id pattern after proper outer spec. */
1898         if (parser->out_layer == HASH_RXQ_ETH && !vxlan.val.tunnel_id)
1899                 return rte_flow_error_set(data->error, EINVAL,
1900                                           RTE_FLOW_ERROR_TYPE_ITEM,
1901                                           item,
1902                                           "VxLAN-GPE vni cannot be 0");
1903         mlx5_flow_create_copy(parser, &vxlan, size);
1904         return 0;
1905 }
1906
1907 /**
1908  * Convert GRE item to Verbs specification.
1909  *
1910  * @param item[in]
1911  *   Item specification.
1912  * @param default_mask[in]
1913  *   Default bit-masks to use when item->mask is not provided.
1914  * @param data[in, out]
1915  *   User structure.
1916  *
1917  * @return
1918  *   0 on success, a negative errno value otherwise and rte_errno is set.
1919  */
1920 static int
1921 mlx5_flow_create_gre(const struct rte_flow_item *item,
1922                      const void *default_mask,
1923                      struct mlx5_flow_data *data)
1924 {
1925         struct mlx5_flow_parse *parser = data->parser;
1926 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1927         (void)default_mask;
1928         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1929         struct ibv_flow_spec_tunnel tunnel = {
1930                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1931                 .size = size,
1932         };
1933 #else
1934         const struct rte_flow_item_gre *spec = item->spec;
1935         const struct rte_flow_item_gre *mask = item->mask;
1936         unsigned int size = sizeof(struct ibv_flow_spec_gre);
1937         struct ibv_flow_spec_gre tunnel = {
1938                 .type = parser->inner | IBV_FLOW_SPEC_GRE,
1939                 .size = size,
1940         };
1941 #endif
1942         struct ibv_flow_spec_ipv4_ext *ipv4;
1943         struct ibv_flow_spec_ipv6 *ipv6;
1944         unsigned int i;
1945
1946         parser->inner = IBV_FLOW_SPEC_INNER;
1947         parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_GRE)];
1948         parser->out_layer = parser->layer;
1949         parser->layer = HASH_RXQ_TUNNEL;
1950 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1951         if (spec) {
1952                 if (!mask)
1953                         mask = default_mask;
1954                 tunnel.val.c_ks_res0_ver = spec->c_rsvd0_ver;
1955                 tunnel.val.protocol = spec->protocol;
1956                 tunnel.mask.c_ks_res0_ver = mask->c_rsvd0_ver;
1957                 tunnel.mask.protocol = mask->protocol;
1958                 /* Remove unwanted bits from values. */
1959                 tunnel.val.c_ks_res0_ver &= tunnel.mask.c_ks_res0_ver;
1960                 tunnel.val.protocol &= tunnel.mask.protocol;
1961                 tunnel.val.key &= tunnel.mask.key;
1962         }
1963 #endif
1964         /* Update encapsulation IP layer protocol. */
1965         for (i = 0; i != hash_rxq_init_n; ++i) {
1966                 if (!parser->queue[i].ibv_attr)
1967                         continue;
1968                 if (parser->out_layer == HASH_RXQ_IPV4) {
1969                         ipv4 = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1970                                 parser->queue[i].offset -
1971                                 sizeof(struct ibv_flow_spec_ipv4_ext));
1972                         if (ipv4->mask.proto && ipv4->val.proto != MLX5_GRE)
1973                                 break;
1974                         ipv4->val.proto = MLX5_GRE;
1975                         ipv4->mask.proto = 0xff;
1976                 } else if (parser->out_layer == HASH_RXQ_IPV6) {
1977                         ipv6 = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1978                                 parser->queue[i].offset -
1979                                 sizeof(struct ibv_flow_spec_ipv6));
1980                         if (ipv6->mask.next_hdr &&
1981                             ipv6->val.next_hdr != MLX5_GRE)
1982                                 break;
1983                         ipv6->val.next_hdr = MLX5_GRE;
1984                         ipv6->mask.next_hdr = 0xff;
1985                 }
1986         }
1987         if (i != hash_rxq_init_n)
1988                 return rte_flow_error_set(data->error, EINVAL,
1989                                           RTE_FLOW_ERROR_TYPE_ITEM,
1990                                           item,
1991                                           "IP protocol of GRE must be 47");
1992         mlx5_flow_create_copy(parser, &tunnel, size);
1993         return 0;
1994 }
1995
1996 /**
1997  * Convert MPLS item to Verbs specification.
1998  * MPLS tunnel types currently supported are MPLS-in-GRE and MPLS-in-UDP.
1999  *
2000  * @param item[in]
2001  *   Item specification.
2002  * @param default_mask[in]
2003  *   Default bit-masks to use when item->mask is not provided.
2004  * @param data[in, out]
2005  *   User structure.
2006  *
2007  * @return
2008  *   0 on success, a negative errno value otherwise and rte_errno is set.
2009  */
2010 static int
2011 mlx5_flow_create_mpls(const struct rte_flow_item *item,
2012                       const void *default_mask,
2013                       struct mlx5_flow_data *data)
2014 {
2015 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2016         (void)default_mask;
2017         return rte_flow_error_set(data->error, ENOTSUP,
2018                                   RTE_FLOW_ERROR_TYPE_ITEM,
2019                                   item,
2020                                   "MPLS is not supported by driver");
2021 #else
2022         const struct rte_flow_item_mpls *spec = item->spec;
2023         const struct rte_flow_item_mpls *mask = item->mask;
2024         struct mlx5_flow_parse *parser = data->parser;
2025         unsigned int size = sizeof(struct ibv_flow_spec_mpls);
2026         struct ibv_flow_spec_mpls mpls = {
2027                 .type = IBV_FLOW_SPEC_MPLS,
2028                 .size = size,
2029         };
2030
2031         parser->inner = IBV_FLOW_SPEC_INNER;
2032         if (parser->layer == HASH_RXQ_UDPV4 ||
2033             parser->layer == HASH_RXQ_UDPV6) {
2034                 parser->tunnel =
2035                         ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_MPLS_IN_UDP)];
2036                 parser->out_layer = parser->layer;
2037         } else {
2038                 parser->tunnel =
2039                         ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_MPLS_IN_GRE)];
2040                 /* parser->out_layer stays as in GRE out_layer. */
2041         }
2042         parser->layer = HASH_RXQ_TUNNEL;
2043         if (spec) {
2044                 if (!mask)
2045                         mask = default_mask;
2046                 /*
2047                  * The verbs label field includes the entire MPLS header:
2048                  * bits 0:19 - label value field.
2049                  * bits 20:22 - traffic class field.
2050                  * bits 23 - bottom of stack bit.
2051                  * bits 24:31 - ttl field.
2052                  */
2053                 mpls.val.label = *(const uint32_t *)spec;
2054                 mpls.mask.label = *(const uint32_t *)mask;
2055                 /* Remove unwanted bits from values. */
2056                 mpls.val.label &= mpls.mask.label;
2057         }
2058         mlx5_flow_create_copy(parser, &mpls, size);
2059         return 0;
2060 #endif
2061 }
2062
2063 /**
2064  * Convert mark/flag action to Verbs specification.
2065  *
2066  * @param parser
2067  *   Internal parser structure.
2068  * @param mark_id
2069  *   Mark identifier.
2070  *
2071  * @return
2072  *   0 on success, a negative errno value otherwise and rte_errno is set.
2073  */
2074 static int
2075 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id)
2076 {
2077         unsigned int size = sizeof(struct ibv_flow_spec_action_tag);
2078         struct ibv_flow_spec_action_tag tag = {
2079                 .type = IBV_FLOW_SPEC_ACTION_TAG,
2080                 .size = size,
2081                 .tag_id = mlx5_flow_mark_set(mark_id),
2082         };
2083
2084         assert(parser->mark);
2085         mlx5_flow_create_copy(parser, &tag, size);
2086         return 0;
2087 }
2088
2089 /**
2090  * Convert count action to Verbs specification.
2091  *
2092  * @param dev
2093  *   Pointer to Ethernet device.
2094  * @param parser
2095  *   Pointer to MLX5 flow parser structure.
2096  *
2097  * @return
2098  *   0 on success, a negative errno value otherwise and rte_errno is set.
2099  */
2100 static int
2101 mlx5_flow_create_count(struct rte_eth_dev *dev __rte_unused,
2102                        struct mlx5_flow_parse *parser __rte_unused)
2103 {
2104 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
2105         struct priv *priv = dev->data->dev_private;
2106         unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
2107         struct ibv_counter_set_init_attr init_attr = {0};
2108         struct ibv_flow_spec_counter_action counter = {
2109                 .type = IBV_FLOW_SPEC_ACTION_COUNT,
2110                 .size = size,
2111                 .counter_set_handle = 0,
2112         };
2113
2114         init_attr.counter_set_id = 0;
2115         parser->cs = mlx5_glue->create_counter_set(priv->ctx, &init_attr);
2116         if (!parser->cs) {
2117                 rte_errno = EINVAL;
2118                 return -rte_errno;
2119         }
2120         counter.counter_set_handle = parser->cs->handle;
2121         mlx5_flow_create_copy(parser, &counter, size);
2122 #endif
2123         return 0;
2124 }
2125
2126 /**
2127  * Complete flow rule creation with a drop queue.
2128  *
2129  * @param dev
2130  *   Pointer to Ethernet device.
2131  * @param parser
2132  *   Internal parser structure.
2133  * @param flow
2134  *   Pointer to the rte_flow.
2135  * @param[out] error
2136  *   Perform verbose error reporting if not NULL.
2137  *
2138  * @return
2139  *   0 on success, a negative errno value otherwise and rte_errno is set.
2140  */
2141 static int
2142 mlx5_flow_create_action_queue_drop(struct rte_eth_dev *dev,
2143                                    struct mlx5_flow_parse *parser,
2144                                    struct rte_flow *flow,
2145                                    struct rte_flow_error *error)
2146 {
2147         struct priv *priv = dev->data->dev_private;
2148         struct ibv_flow_spec_action_drop *drop;
2149         unsigned int size = sizeof(struct ibv_flow_spec_action_drop);
2150
2151         assert(priv->pd);
2152         assert(priv->ctx);
2153         flow->drop = 1;
2154         drop = (void *)((uintptr_t)parser->queue[HASH_RXQ_ETH].ibv_attr +
2155                         parser->queue[HASH_RXQ_ETH].offset);
2156         *drop = (struct ibv_flow_spec_action_drop){
2157                         .type = IBV_FLOW_SPEC_ACTION_DROP,
2158                         .size = size,
2159         };
2160         ++parser->queue[HASH_RXQ_ETH].ibv_attr->num_of_specs;
2161         parser->queue[HASH_RXQ_ETH].offset += size;
2162         flow->frxq[HASH_RXQ_ETH].ibv_attr =
2163                 parser->queue[HASH_RXQ_ETH].ibv_attr;
2164         if (parser->count)
2165                 flow->cs = parser->cs;
2166         if (!dev->data->dev_started)
2167                 return 0;
2168         parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
2169         flow->frxq[HASH_RXQ_ETH].ibv_flow =
2170                 mlx5_glue->create_flow(priv->flow_drop_queue->qp,
2171                                        flow->frxq[HASH_RXQ_ETH].ibv_attr);
2172         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2173                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
2174                                    NULL, "flow rule creation failure");
2175                 goto error;
2176         }
2177         return 0;
2178 error:
2179         assert(flow);
2180         if (flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2181                 claim_zero(mlx5_glue->destroy_flow
2182                            (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2183                 flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
2184         }
2185         if (flow->frxq[HASH_RXQ_ETH].ibv_attr) {
2186                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
2187                 flow->frxq[HASH_RXQ_ETH].ibv_attr = NULL;
2188         }
2189         if (flow->cs) {
2190                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2191                 flow->cs = NULL;
2192                 parser->cs = NULL;
2193         }
2194         return -rte_errno;
2195 }
2196
2197 /**
2198  * Create hash Rx queues when RSS is enabled.
2199  *
2200  * @param dev
2201  *   Pointer to Ethernet device.
2202  * @param parser
2203  *   Internal parser structure.
2204  * @param flow
2205  *   Pointer to the rte_flow.
2206  * @param[out] error
2207  *   Perform verbose error reporting if not NULL.
2208  *
2209  * @return
2210  *   0 on success, a negative errno value otherwise and rte_errno is set.
2211  */
2212 static int
2213 mlx5_flow_create_action_queue_rss(struct rte_eth_dev *dev,
2214                                   struct mlx5_flow_parse *parser,
2215                                   struct rte_flow *flow,
2216                                   struct rte_flow_error *error)
2217 {
2218         unsigned int i;
2219
2220         for (i = 0; i != hash_rxq_init_n; ++i) {
2221                 if (!parser->queue[i].ibv_attr)
2222                         continue;
2223                 flow->frxq[i].ibv_attr = parser->queue[i].ibv_attr;
2224                 parser->queue[i].ibv_attr = NULL;
2225                 flow->frxq[i].hash_fields = parser->queue[i].hash_fields;
2226                 if (!dev->data->dev_started)
2227                         continue;
2228                 flow->frxq[i].hrxq =
2229                         mlx5_hrxq_get(dev,
2230                                       parser->rss_conf.key,
2231                                       parser->rss_conf.key_len,
2232                                       flow->frxq[i].hash_fields,
2233                                       parser->rss_conf.queue,
2234                                       parser->rss_conf.queue_num,
2235                                       parser->tunnel,
2236                                       parser->rss_conf.level);
2237                 if (flow->frxq[i].hrxq)
2238                         continue;
2239                 flow->frxq[i].hrxq =
2240                         mlx5_hrxq_new(dev,
2241                                       parser->rss_conf.key,
2242                                       parser->rss_conf.key_len,
2243                                       flow->frxq[i].hash_fields,
2244                                       parser->rss_conf.queue,
2245                                       parser->rss_conf.queue_num,
2246                                       parser->tunnel,
2247                                       parser->rss_conf.level);
2248                 if (!flow->frxq[i].hrxq) {
2249                         return rte_flow_error_set(error, ENOMEM,
2250                                                   RTE_FLOW_ERROR_TYPE_HANDLE,
2251                                                   NULL,
2252                                                   "cannot create hash rxq");
2253                 }
2254         }
2255         return 0;
2256 }
2257
2258 /**
2259  * RXQ update after flow rule creation.
2260  *
2261  * @param dev
2262  *   Pointer to Ethernet device.
2263  * @param flow
2264  *   Pointer to the flow rule.
2265  */
2266 static void
2267 mlx5_flow_create_update_rxqs(struct rte_eth_dev *dev, struct rte_flow *flow)
2268 {
2269         struct priv *priv = dev->data->dev_private;
2270         unsigned int i;
2271         unsigned int j;
2272
2273         if (!dev->data->dev_started)
2274                 return;
2275         for (i = 0; i != flow->rss_conf.queue_num; ++i) {
2276                 struct mlx5_rxq_data *rxq_data = (*priv->rxqs)
2277                                                  [(*flow->queues)[i]];
2278                 struct mlx5_rxq_ctrl *rxq_ctrl =
2279                         container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
2280                 uint8_t tunnel = PTYPE_IDX(flow->tunnel);
2281
2282                 rxq_data->mark |= flow->mark;
2283                 if (!tunnel)
2284                         continue;
2285                 rxq_ctrl->tunnel_types[tunnel] += 1;
2286                 /* Clear tunnel type if more than one tunnel types set. */
2287                 for (j = 0; j != RTE_DIM(rxq_ctrl->tunnel_types); ++j) {
2288                         if (j == tunnel)
2289                                 continue;
2290                         if (rxq_ctrl->tunnel_types[j] > 0) {
2291                                 rxq_data->tunnel = 0;
2292                                 break;
2293                         }
2294                 }
2295                 if (j == RTE_DIM(rxq_ctrl->tunnel_types))
2296                         rxq_data->tunnel = flow->tunnel;
2297         }
2298 }
2299
2300 /**
2301  * Dump flow hash RX queue detail.
2302  *
2303  * @param dev
2304  *   Pointer to Ethernet device.
2305  * @param flow
2306  *   Pointer to the rte_flow.
2307  * @param hrxq_idx
2308  *   Hash RX queue index.
2309  */
2310 static void
2311 mlx5_flow_dump(struct rte_eth_dev *dev __rte_unused,
2312                struct rte_flow *flow __rte_unused,
2313                unsigned int hrxq_idx __rte_unused)
2314 {
2315 #ifndef NDEBUG
2316         uintptr_t spec_ptr;
2317         uint16_t j;
2318         char buf[256];
2319         uint8_t off;
2320         uint64_t extra_hash_fields = 0;
2321
2322 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
2323         if (flow->tunnel && flow->rss_conf.level > 1)
2324                 extra_hash_fields = (uint32_t)IBV_RX_HASH_INNER;
2325 #endif
2326         spec_ptr = (uintptr_t)(flow->frxq[hrxq_idx].ibv_attr + 1);
2327         for (j = 0, off = 0; j < flow->frxq[hrxq_idx].ibv_attr->num_of_specs;
2328              j++) {
2329                 struct ibv_flow_spec *spec = (void *)spec_ptr;
2330                 off += sprintf(buf + off, " %x(%hu)", spec->hdr.type,
2331                                spec->hdr.size);
2332                 spec_ptr += spec->hdr.size;
2333         }
2334         DRV_LOG(DEBUG,
2335                 "port %u Verbs flow %p type %u: hrxq:%p qp:%p ind:%p,"
2336                 " hash:%" PRIx64 "/%u specs:%hhu(%hu), priority:%hu, type:%d,"
2337                 " flags:%x, comp_mask:%x specs:%s",
2338                 dev->data->port_id, (void *)flow, hrxq_idx,
2339                 (void *)flow->frxq[hrxq_idx].hrxq,
2340                 (void *)flow->frxq[hrxq_idx].hrxq->qp,
2341                 (void *)flow->frxq[hrxq_idx].hrxq->ind_table,
2342                 (flow->frxq[hrxq_idx].hash_fields | extra_hash_fields),
2343                 flow->rss_conf.queue_num,
2344                 flow->frxq[hrxq_idx].ibv_attr->num_of_specs,
2345                 flow->frxq[hrxq_idx].ibv_attr->size,
2346                 flow->frxq[hrxq_idx].ibv_attr->priority,
2347                 flow->frxq[hrxq_idx].ibv_attr->type,
2348                 flow->frxq[hrxq_idx].ibv_attr->flags,
2349                 flow->frxq[hrxq_idx].ibv_attr->comp_mask,
2350                 buf);
2351 #endif
2352 }
2353
2354 /**
2355  * Complete flow rule creation.
2356  *
2357  * @param dev
2358  *   Pointer to Ethernet device.
2359  * @param parser
2360  *   Internal parser structure.
2361  * @param flow
2362  *   Pointer to the rte_flow.
2363  * @param[out] error
2364  *   Perform verbose error reporting if not NULL.
2365  *
2366  * @return
2367  *   0 on success, a negative errno value otherwise and rte_errno is set.
2368  */
2369 static int
2370 mlx5_flow_create_action_queue(struct rte_eth_dev *dev,
2371                               struct mlx5_flow_parse *parser,
2372                               struct rte_flow *flow,
2373                               struct rte_flow_error *error)
2374 {
2375         struct priv *priv __rte_unused = dev->data->dev_private;
2376         int ret;
2377         unsigned int i;
2378         unsigned int flows_n = 0;
2379
2380         assert(priv->pd);
2381         assert(priv->ctx);
2382         assert(!parser->drop);
2383         ret = mlx5_flow_create_action_queue_rss(dev, parser, flow, error);
2384         if (ret)
2385                 goto error;
2386         if (parser->count)
2387                 flow->cs = parser->cs;
2388         if (!dev->data->dev_started)
2389                 return 0;
2390         for (i = 0; i != hash_rxq_init_n; ++i) {
2391                 if (!flow->frxq[i].hrxq)
2392                         continue;
2393                 flow->frxq[i].ibv_flow =
2394                         mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
2395                                                flow->frxq[i].ibv_attr);
2396                 mlx5_flow_dump(dev, flow, i);
2397                 if (!flow->frxq[i].ibv_flow) {
2398                         rte_flow_error_set(error, ENOMEM,
2399                                            RTE_FLOW_ERROR_TYPE_HANDLE,
2400                                            NULL, "flow rule creation failure");
2401                         goto error;
2402                 }
2403                 ++flows_n;
2404         }
2405         if (!flows_n) {
2406                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
2407                                    NULL, "internal error in flow creation");
2408                 goto error;
2409         }
2410         mlx5_flow_create_update_rxqs(dev, flow);
2411         return 0;
2412 error:
2413         ret = rte_errno; /* Save rte_errno before cleanup. */
2414         assert(flow);
2415         for (i = 0; i != hash_rxq_init_n; ++i) {
2416                 if (flow->frxq[i].ibv_flow) {
2417                         struct ibv_flow *ibv_flow = flow->frxq[i].ibv_flow;
2418
2419                         claim_zero(mlx5_glue->destroy_flow(ibv_flow));
2420                 }
2421                 if (flow->frxq[i].hrxq)
2422                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
2423                 if (flow->frxq[i].ibv_attr)
2424                         rte_free(flow->frxq[i].ibv_attr);
2425         }
2426         if (flow->cs) {
2427                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2428                 flow->cs = NULL;
2429                 parser->cs = NULL;
2430         }
2431         rte_errno = ret; /* Restore rte_errno. */
2432         return -rte_errno;
2433 }
2434
2435 /**
2436  * Convert a flow.
2437  *
2438  * @param dev
2439  *   Pointer to Ethernet device.
2440  * @param list
2441  *   Pointer to a TAILQ flow list.
2442  * @param[in] attr
2443  *   Flow rule attributes.
2444  * @param[in] pattern
2445  *   Pattern specification (list terminated by the END pattern item).
2446  * @param[in] actions
2447  *   Associated actions (list terminated by the END action).
2448  * @param[out] error
2449  *   Perform verbose error reporting if not NULL.
2450  *
2451  * @return
2452  *   A flow on success, NULL otherwise and rte_errno is set.
2453  */
2454 static struct rte_flow *
2455 mlx5_flow_list_create(struct rte_eth_dev *dev,
2456                       struct mlx5_flows *list,
2457                       const struct rte_flow_attr *attr,
2458                       const struct rte_flow_item items[],
2459                       const struct rte_flow_action actions[],
2460                       struct rte_flow_error *error)
2461 {
2462         struct mlx5_flow_parse parser = { .create = 1, };
2463         struct rte_flow *flow = NULL;
2464         unsigned int i;
2465         int ret;
2466
2467         ret = mlx5_flow_convert(dev, attr, items, actions, error, &parser);
2468         if (ret)
2469                 goto exit;
2470         flow = rte_calloc(__func__, 1,
2471                           sizeof(*flow) +
2472                           parser.rss_conf.queue_num * sizeof(uint16_t),
2473                           0);
2474         if (!flow) {
2475                 rte_flow_error_set(error, ENOMEM,
2476                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2477                                    NULL,
2478                                    "cannot allocate flow memory");
2479                 return NULL;
2480         }
2481         /* Copy configuration. */
2482         flow->queues = (uint16_t (*)[])(flow + 1);
2483         flow->tunnel = parser.tunnel;
2484         flow->rss_conf = (struct rte_flow_action_rss){
2485                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2486                 .level = parser.rss_conf.level,
2487                 .types = parser.rss_conf.types,
2488                 .key_len = parser.rss_conf.key_len,
2489                 .queue_num = parser.rss_conf.queue_num,
2490                 .key = memcpy(flow->rss_key, parser.rss_conf.key,
2491                               sizeof(*parser.rss_conf.key) *
2492                               parser.rss_conf.key_len),
2493                 .queue = memcpy(flow->queues, parser.rss_conf.queue,
2494                                 sizeof(*parser.rss_conf.queue) *
2495                                 parser.rss_conf.queue_num),
2496         };
2497         flow->mark = parser.mark;
2498         /* finalise the flow. */
2499         if (parser.drop)
2500                 ret = mlx5_flow_create_action_queue_drop(dev, &parser, flow,
2501                                                          error);
2502         else
2503                 ret = mlx5_flow_create_action_queue(dev, &parser, flow, error);
2504         if (ret)
2505                 goto exit;
2506         TAILQ_INSERT_TAIL(list, flow, next);
2507         DRV_LOG(DEBUG, "port %u flow created %p", dev->data->port_id,
2508                 (void *)flow);
2509         return flow;
2510 exit:
2511         DRV_LOG(ERR, "port %u flow creation error: %s", dev->data->port_id,
2512                 error->message);
2513         for (i = 0; i != hash_rxq_init_n; ++i) {
2514                 if (parser.queue[i].ibv_attr)
2515                         rte_free(parser.queue[i].ibv_attr);
2516         }
2517         rte_free(flow);
2518         return NULL;
2519 }
2520
2521 /**
2522  * Validate a flow supported by the NIC.
2523  *
2524  * @see rte_flow_validate()
2525  * @see rte_flow_ops
2526  */
2527 int
2528 mlx5_flow_validate(struct rte_eth_dev *dev,
2529                    const struct rte_flow_attr *attr,
2530                    const struct rte_flow_item items[],
2531                    const struct rte_flow_action actions[],
2532                    struct rte_flow_error *error)
2533 {
2534         struct mlx5_flow_parse parser = { .create = 0, };
2535
2536         return mlx5_flow_convert(dev, attr, items, actions, error, &parser);
2537 }
2538
2539 /**
2540  * Create a flow.
2541  *
2542  * @see rte_flow_create()
2543  * @see rte_flow_ops
2544  */
2545 struct rte_flow *
2546 mlx5_flow_create(struct rte_eth_dev *dev,
2547                  const struct rte_flow_attr *attr,
2548                  const struct rte_flow_item items[],
2549                  const struct rte_flow_action actions[],
2550                  struct rte_flow_error *error)
2551 {
2552         struct priv *priv = dev->data->dev_private;
2553
2554         return mlx5_flow_list_create(dev, &priv->flows, attr, items, actions,
2555                                      error);
2556 }
2557
2558 /**
2559  * Destroy a flow in a list.
2560  *
2561  * @param dev
2562  *   Pointer to Ethernet device.
2563  * @param list
2564  *   Pointer to a TAILQ flow list.
2565  * @param[in] flow
2566  *   Flow to destroy.
2567  */
2568 static void
2569 mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2570                        struct rte_flow *flow)
2571 {
2572         struct priv *priv = dev->data->dev_private;
2573         unsigned int i;
2574
2575         if (flow->drop || !dev->data->dev_started)
2576                 goto free;
2577         for (i = 0; flow->tunnel && i != flow->rss_conf.queue_num; ++i) {
2578                 /* Update queue tunnel type. */
2579                 struct mlx5_rxq_data *rxq_data = (*priv->rxqs)
2580                                                  [(*flow->queues)[i]];
2581                 struct mlx5_rxq_ctrl *rxq_ctrl =
2582                         container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
2583                 uint8_t tunnel = PTYPE_IDX(flow->tunnel);
2584
2585                 assert(rxq_ctrl->tunnel_types[tunnel] > 0);
2586                 rxq_ctrl->tunnel_types[tunnel] -= 1;
2587                 if (!rxq_ctrl->tunnel_types[tunnel]) {
2588                         /* Update tunnel type. */
2589                         uint8_t j;
2590                         uint8_t types = 0;
2591                         uint8_t last;
2592
2593                         for (j = 0; j < RTE_DIM(rxq_ctrl->tunnel_types); j++)
2594                                 if (rxq_ctrl->tunnel_types[j]) {
2595                                         types += 1;
2596                                         last = j;
2597                                 }
2598                         /* Keep same if more than one tunnel types left. */
2599                         if (types == 1)
2600                                 rxq_data->tunnel = ptype_ext[last];
2601                         else if (types == 0)
2602                                 /* No tunnel type left. */
2603                                 rxq_data->tunnel = 0;
2604                 }
2605         }
2606         for (i = 0; flow->mark && i != flow->rss_conf.queue_num; ++i) {
2607                 struct rte_flow *tmp;
2608                 int mark = 0;
2609
2610                 /*
2611                  * To remove the mark from the queue, the queue must not be
2612                  * present in any other marked flow (RSS or not).
2613                  */
2614                 TAILQ_FOREACH(tmp, list, next) {
2615                         unsigned int j;
2616                         uint16_t *tqs = NULL;
2617                         uint16_t tq_n = 0;
2618
2619                         if (!tmp->mark)
2620                                 continue;
2621                         for (j = 0; j != hash_rxq_init_n; ++j) {
2622                                 if (!tmp->frxq[j].hrxq)
2623                                         continue;
2624                                 tqs = tmp->frxq[j].hrxq->ind_table->queues;
2625                                 tq_n = tmp->frxq[j].hrxq->ind_table->queues_n;
2626                         }
2627                         if (!tq_n)
2628                                 continue;
2629                         for (j = 0; (j != tq_n) && !mark; j++)
2630                                 if (tqs[j] == (*flow->queues)[i])
2631                                         mark = 1;
2632                 }
2633                 (*priv->rxqs)[(*flow->queues)[i]]->mark = mark;
2634         }
2635 free:
2636         if (flow->drop) {
2637                 if (flow->frxq[HASH_RXQ_ETH].ibv_flow)
2638                         claim_zero(mlx5_glue->destroy_flow
2639                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2640                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
2641         } else {
2642                 for (i = 0; i != hash_rxq_init_n; ++i) {
2643                         struct mlx5_flow *frxq = &flow->frxq[i];
2644
2645                         if (frxq->ibv_flow)
2646                                 claim_zero(mlx5_glue->destroy_flow
2647                                            (frxq->ibv_flow));
2648                         if (frxq->hrxq)
2649                                 mlx5_hrxq_release(dev, frxq->hrxq);
2650                         if (frxq->ibv_attr)
2651                                 rte_free(frxq->ibv_attr);
2652                 }
2653         }
2654         if (flow->cs) {
2655                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2656                 flow->cs = NULL;
2657         }
2658         TAILQ_REMOVE(list, flow, next);
2659         DRV_LOG(DEBUG, "port %u flow destroyed %p", dev->data->port_id,
2660                 (void *)flow);
2661         rte_free(flow);
2662 }
2663
2664 /**
2665  * Destroy all flows.
2666  *
2667  * @param dev
2668  *   Pointer to Ethernet device.
2669  * @param list
2670  *   Pointer to a TAILQ flow list.
2671  */
2672 void
2673 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2674 {
2675         while (!TAILQ_EMPTY(list)) {
2676                 struct rte_flow *flow;
2677
2678                 flow = TAILQ_FIRST(list);
2679                 mlx5_flow_list_destroy(dev, list, flow);
2680         }
2681 }
2682
2683 /**
2684  * Create drop queue.
2685  *
2686  * @param dev
2687  *   Pointer to Ethernet device.
2688  *
2689  * @return
2690  *   0 on success, a negative errno value otherwise and rte_errno is set.
2691  */
2692 int
2693 mlx5_flow_create_drop_queue(struct rte_eth_dev *dev)
2694 {
2695         struct priv *priv = dev->data->dev_private;
2696         struct mlx5_hrxq_drop *fdq = NULL;
2697
2698         assert(priv->pd);
2699         assert(priv->ctx);
2700         fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0);
2701         if (!fdq) {
2702                 DRV_LOG(WARNING,
2703                         "port %u cannot allocate memory for drop queue",
2704                         dev->data->port_id);
2705                 rte_errno = ENOMEM;
2706                 return -rte_errno;
2707         }
2708         fdq->cq = mlx5_glue->create_cq(priv->ctx, 1, NULL, NULL, 0);
2709         if (!fdq->cq) {
2710                 DRV_LOG(WARNING, "port %u cannot allocate CQ for drop queue",
2711                         dev->data->port_id);
2712                 rte_errno = errno;
2713                 goto error;
2714         }
2715         fdq->wq = mlx5_glue->create_wq
2716                 (priv->ctx,
2717                  &(struct ibv_wq_init_attr){
2718                         .wq_type = IBV_WQT_RQ,
2719                         .max_wr = 1,
2720                         .max_sge = 1,
2721                         .pd = priv->pd,
2722                         .cq = fdq->cq,
2723                  });
2724         if (!fdq->wq) {
2725                 DRV_LOG(WARNING, "port %u cannot allocate WQ for drop queue",
2726                         dev->data->port_id);
2727                 rte_errno = errno;
2728                 goto error;
2729         }
2730         fdq->ind_table = mlx5_glue->create_rwq_ind_table
2731                 (priv->ctx,
2732                  &(struct ibv_rwq_ind_table_init_attr){
2733                         .log_ind_tbl_size = 0,
2734                         .ind_tbl = &fdq->wq,
2735                         .comp_mask = 0,
2736                  });
2737         if (!fdq->ind_table) {
2738                 DRV_LOG(WARNING,
2739                         "port %u cannot allocate indirection table for drop"
2740                         " queue",
2741                         dev->data->port_id);
2742                 rte_errno = errno;
2743                 goto error;
2744         }
2745         fdq->qp = mlx5_glue->create_qp_ex
2746                 (priv->ctx,
2747                  &(struct ibv_qp_init_attr_ex){
2748                         .qp_type = IBV_QPT_RAW_PACKET,
2749                         .comp_mask =
2750                                 IBV_QP_INIT_ATTR_PD |
2751                                 IBV_QP_INIT_ATTR_IND_TABLE |
2752                                 IBV_QP_INIT_ATTR_RX_HASH,
2753                         .rx_hash_conf = (struct ibv_rx_hash_conf){
2754                                 .rx_hash_function =
2755                                         IBV_RX_HASH_FUNC_TOEPLITZ,
2756                                 .rx_hash_key_len = rss_hash_default_key_len,
2757                                 .rx_hash_key = rss_hash_default_key,
2758                                 .rx_hash_fields_mask = 0,
2759                                 },
2760                         .rwq_ind_tbl = fdq->ind_table,
2761                         .pd = priv->pd
2762                  });
2763         if (!fdq->qp) {
2764                 DRV_LOG(WARNING, "port %u cannot allocate QP for drop queue",
2765                         dev->data->port_id);
2766                 rte_errno = errno;
2767                 goto error;
2768         }
2769         priv->flow_drop_queue = fdq;
2770         return 0;
2771 error:
2772         if (fdq->qp)
2773                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2774         if (fdq->ind_table)
2775                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2776         if (fdq->wq)
2777                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2778         if (fdq->cq)
2779                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2780         if (fdq)
2781                 rte_free(fdq);
2782         priv->flow_drop_queue = NULL;
2783         return -rte_errno;
2784 }
2785
2786 /**
2787  * Delete drop queue.
2788  *
2789  * @param dev
2790  *   Pointer to Ethernet device.
2791  */
2792 void
2793 mlx5_flow_delete_drop_queue(struct rte_eth_dev *dev)
2794 {
2795         struct priv *priv = dev->data->dev_private;
2796         struct mlx5_hrxq_drop *fdq = priv->flow_drop_queue;
2797
2798         if (!fdq)
2799                 return;
2800         if (fdq->qp)
2801                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2802         if (fdq->ind_table)
2803                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2804         if (fdq->wq)
2805                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2806         if (fdq->cq)
2807                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2808         rte_free(fdq);
2809         priv->flow_drop_queue = NULL;
2810 }
2811
2812 /**
2813  * Remove all flows.
2814  *
2815  * @param dev
2816  *   Pointer to Ethernet device.
2817  * @param list
2818  *   Pointer to a TAILQ flow list.
2819  */
2820 void
2821 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2822 {
2823         struct priv *priv = dev->data->dev_private;
2824         struct rte_flow *flow;
2825         unsigned int i;
2826
2827         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
2828                 struct mlx5_ind_table_ibv *ind_tbl = NULL;
2829
2830                 if (flow->drop) {
2831                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow)
2832                                 continue;
2833                         claim_zero(mlx5_glue->destroy_flow
2834                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2835                         flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
2836                         DRV_LOG(DEBUG, "port %u flow %p removed",
2837                                 dev->data->port_id, (void *)flow);
2838                         /* Next flow. */
2839                         continue;
2840                 }
2841                 /* Verify the flow has not already been cleaned. */
2842                 for (i = 0; i != hash_rxq_init_n; ++i) {
2843                         if (!flow->frxq[i].ibv_flow)
2844                                 continue;
2845                         /*
2846                          * Indirection table may be necessary to remove the
2847                          * flags in the Rx queues.
2848                          * This helps to speed-up the process by avoiding
2849                          * another loop.
2850                          */
2851                         ind_tbl = flow->frxq[i].hrxq->ind_table;
2852                         break;
2853                 }
2854                 if (i == hash_rxq_init_n)
2855                         return;
2856                 if (flow->mark) {
2857                         assert(ind_tbl);
2858                         for (i = 0; i != ind_tbl->queues_n; ++i)
2859                                 (*priv->rxqs)[ind_tbl->queues[i]]->mark = 0;
2860                 }
2861                 for (i = 0; i != hash_rxq_init_n; ++i) {
2862                         if (!flow->frxq[i].ibv_flow)
2863                                 continue;
2864                         claim_zero(mlx5_glue->destroy_flow
2865                                    (flow->frxq[i].ibv_flow));
2866                         flow->frxq[i].ibv_flow = NULL;
2867                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
2868                         flow->frxq[i].hrxq = NULL;
2869                 }
2870                 DRV_LOG(DEBUG, "port %u flow %p removed", dev->data->port_id,
2871                         (void *)flow);
2872         }
2873         /* Cleanup Rx queue tunnel info. */
2874         for (i = 0; i != priv->rxqs_n; ++i) {
2875                 struct mlx5_rxq_data *q = (*priv->rxqs)[i];
2876                 struct mlx5_rxq_ctrl *rxq_ctrl =
2877                         container_of(q, struct mlx5_rxq_ctrl, rxq);
2878
2879                 if (!q)
2880                         continue;
2881                 memset((void *)rxq_ctrl->tunnel_types, 0,
2882                        sizeof(rxq_ctrl->tunnel_types));
2883                 q->tunnel = 0;
2884         }
2885 }
2886
2887 /**
2888  * Add all flows.
2889  *
2890  * @param dev
2891  *   Pointer to Ethernet device.
2892  * @param list
2893  *   Pointer to a TAILQ flow list.
2894  *
2895  * @return
2896  *   0 on success, a negative errno value otherwise and rte_errno is set.
2897  */
2898 int
2899 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2900 {
2901         struct priv *priv = dev->data->dev_private;
2902         struct rte_flow *flow;
2903
2904         TAILQ_FOREACH(flow, list, next) {
2905                 unsigned int i;
2906
2907                 if (flow->drop) {
2908                         flow->frxq[HASH_RXQ_ETH].ibv_flow =
2909                                 mlx5_glue->create_flow
2910                                 (priv->flow_drop_queue->qp,
2911                                  flow->frxq[HASH_RXQ_ETH].ibv_attr);
2912                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2913                                 DRV_LOG(DEBUG,
2914                                         "port %u flow %p cannot be applied",
2915                                         dev->data->port_id, (void *)flow);
2916                                 rte_errno = EINVAL;
2917                                 return -rte_errno;
2918                         }
2919                         DRV_LOG(DEBUG, "port %u flow %p applied",
2920                                 dev->data->port_id, (void *)flow);
2921                         /* Next flow. */
2922                         continue;
2923                 }
2924                 for (i = 0; i != hash_rxq_init_n; ++i) {
2925                         if (!flow->frxq[i].ibv_attr)
2926                                 continue;
2927                         flow->frxq[i].hrxq =
2928                                 mlx5_hrxq_get(dev, flow->rss_conf.key,
2929                                               flow->rss_conf.key_len,
2930                                               flow->frxq[i].hash_fields,
2931                                               flow->rss_conf.queue,
2932                                               flow->rss_conf.queue_num,
2933                                               flow->tunnel,
2934                                               flow->rss_conf.level);
2935                         if (flow->frxq[i].hrxq)
2936                                 goto flow_create;
2937                         flow->frxq[i].hrxq =
2938                                 mlx5_hrxq_new(dev, flow->rss_conf.key,
2939                                               flow->rss_conf.key_len,
2940                                               flow->frxq[i].hash_fields,
2941                                               flow->rss_conf.queue,
2942                                               flow->rss_conf.queue_num,
2943                                               flow->tunnel,
2944                                               flow->rss_conf.level);
2945                         if (!flow->frxq[i].hrxq) {
2946                                 DRV_LOG(DEBUG,
2947                                         "port %u flow %p cannot create hash"
2948                                         " rxq",
2949                                         dev->data->port_id, (void *)flow);
2950                                 rte_errno = EINVAL;
2951                                 return -rte_errno;
2952                         }
2953 flow_create:
2954                         mlx5_flow_dump(dev, flow, i);
2955                         flow->frxq[i].ibv_flow =
2956                                 mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
2957                                                        flow->frxq[i].ibv_attr);
2958                         if (!flow->frxq[i].ibv_flow) {
2959                                 DRV_LOG(DEBUG,
2960                                         "port %u flow %p type %u cannot be"
2961                                         " applied",
2962                                         dev->data->port_id, (void *)flow, i);
2963                                 rte_errno = EINVAL;
2964                                 return -rte_errno;
2965                         }
2966                 }
2967                 mlx5_flow_create_update_rxqs(dev, flow);
2968         }
2969         return 0;
2970 }
2971
2972 /**
2973  * Verify the flow list is empty
2974  *
2975  * @param dev
2976  *  Pointer to Ethernet device.
2977  *
2978  * @return the number of flows not released.
2979  */
2980 int
2981 mlx5_flow_verify(struct rte_eth_dev *dev)
2982 {
2983         struct priv *priv = dev->data->dev_private;
2984         struct rte_flow *flow;
2985         int ret = 0;
2986
2987         TAILQ_FOREACH(flow, &priv->flows, next) {
2988                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2989                         dev->data->port_id, (void *)flow);
2990                 ++ret;
2991         }
2992         return ret;
2993 }
2994
2995 /**
2996  * Enable a control flow configured from the control plane.
2997  *
2998  * @param dev
2999  *   Pointer to Ethernet device.
3000  * @param eth_spec
3001  *   An Ethernet flow spec to apply.
3002  * @param eth_mask
3003  *   An Ethernet flow mask to apply.
3004  * @param vlan_spec
3005  *   A VLAN flow spec to apply.
3006  * @param vlan_mask
3007  *   A VLAN flow mask to apply.
3008  *
3009  * @return
3010  *   0 on success, a negative errno value otherwise and rte_errno is set.
3011  */
3012 int
3013 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
3014                     struct rte_flow_item_eth *eth_spec,
3015                     struct rte_flow_item_eth *eth_mask,
3016                     struct rte_flow_item_vlan *vlan_spec,
3017                     struct rte_flow_item_vlan *vlan_mask)
3018 {
3019         struct priv *priv = dev->data->dev_private;
3020         const struct rte_flow_attr attr = {
3021                 .ingress = 1,
3022                 .priority = MLX5_CTRL_FLOW_PRIORITY,
3023         };
3024         struct rte_flow_item items[] = {
3025                 {
3026                         .type = RTE_FLOW_ITEM_TYPE_ETH,
3027                         .spec = eth_spec,
3028                         .last = NULL,
3029                         .mask = eth_mask,
3030                 },
3031                 {
3032                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
3033                                 RTE_FLOW_ITEM_TYPE_END,
3034                         .spec = vlan_spec,
3035                         .last = NULL,
3036                         .mask = vlan_mask,
3037                 },
3038                 {
3039                         .type = RTE_FLOW_ITEM_TYPE_END,
3040                 },
3041         };
3042         uint16_t queue[priv->reta_idx_n];
3043         struct rte_flow_action_rss action_rss = {
3044                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
3045                 .level = 0,
3046                 .types = priv->rss_conf.rss_hf,
3047                 .key_len = priv->rss_conf.rss_key_len,
3048                 .queue_num = priv->reta_idx_n,
3049                 .key = priv->rss_conf.rss_key,
3050                 .queue = queue,
3051         };
3052         struct rte_flow_action actions[] = {
3053                 {
3054                         .type = RTE_FLOW_ACTION_TYPE_RSS,
3055                         .conf = &action_rss,
3056                 },
3057                 {
3058                         .type = RTE_FLOW_ACTION_TYPE_END,
3059                 },
3060         };
3061         struct rte_flow *flow;
3062         struct rte_flow_error error;
3063         unsigned int i;
3064
3065         if (!priv->reta_idx_n) {
3066                 rte_errno = EINVAL;
3067                 return -rte_errno;
3068         }
3069         for (i = 0; i != priv->reta_idx_n; ++i)
3070                 queue[i] = (*priv->reta_idx)[i];
3071         flow = mlx5_flow_list_create(dev, &priv->ctrl_flows, &attr, items,
3072                                      actions, &error);
3073         if (!flow)
3074                 return -rte_errno;
3075         return 0;
3076 }
3077
3078 /**
3079  * Enable a flow control configured from the control plane.
3080  *
3081  * @param dev
3082  *   Pointer to Ethernet device.
3083  * @param eth_spec
3084  *   An Ethernet flow spec to apply.
3085  * @param eth_mask
3086  *   An Ethernet flow mask to apply.
3087  *
3088  * @return
3089  *   0 on success, a negative errno value otherwise and rte_errno is set.
3090  */
3091 int
3092 mlx5_ctrl_flow(struct rte_eth_dev *dev,
3093                struct rte_flow_item_eth *eth_spec,
3094                struct rte_flow_item_eth *eth_mask)
3095 {
3096         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
3097 }
3098
3099 /**
3100  * Destroy a flow.
3101  *
3102  * @see rte_flow_destroy()
3103  * @see rte_flow_ops
3104  */
3105 int
3106 mlx5_flow_destroy(struct rte_eth_dev *dev,
3107                   struct rte_flow *flow,
3108                   struct rte_flow_error *error __rte_unused)
3109 {
3110         struct priv *priv = dev->data->dev_private;
3111
3112         mlx5_flow_list_destroy(dev, &priv->flows, flow);
3113         return 0;
3114 }
3115
3116 /**
3117  * Destroy all flows.
3118  *
3119  * @see rte_flow_flush()
3120  * @see rte_flow_ops
3121  */
3122 int
3123 mlx5_flow_flush(struct rte_eth_dev *dev,
3124                 struct rte_flow_error *error __rte_unused)
3125 {
3126         struct priv *priv = dev->data->dev_private;
3127
3128         mlx5_flow_list_flush(dev, &priv->flows);
3129         return 0;
3130 }
3131
3132 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
3133 /**
3134  * Query flow counter.
3135  *
3136  * @param cs
3137  *   the counter set.
3138  * @param counter_value
3139  *   returned data from the counter.
3140  *
3141  * @return
3142  *   0 on success, a negative errno value otherwise and rte_errno is set.
3143  */
3144 static int
3145 mlx5_flow_query_count(struct ibv_counter_set *cs,
3146                       struct mlx5_flow_counter_stats *counter_stats,
3147                       struct rte_flow_query_count *query_count,
3148                       struct rte_flow_error *error)
3149 {
3150         uint64_t counters[2];
3151         struct ibv_query_counter_set_attr query_cs_attr = {
3152                 .cs = cs,
3153                 .query_flags = IBV_COUNTER_SET_FORCE_UPDATE,
3154         };
3155         struct ibv_counter_set_data query_out = {
3156                 .out = counters,
3157                 .outlen = 2 * sizeof(uint64_t),
3158         };
3159         int err = mlx5_glue->query_counter_set(&query_cs_attr, &query_out);
3160
3161         if (err)
3162                 return rte_flow_error_set(error, err,
3163                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3164                                           NULL,
3165                                           "cannot read counter");
3166         query_count->hits_set = 1;
3167         query_count->bytes_set = 1;
3168         query_count->hits = counters[0] - counter_stats->hits;
3169         query_count->bytes = counters[1] - counter_stats->bytes;
3170         if (query_count->reset) {
3171                 counter_stats->hits = counters[0];
3172                 counter_stats->bytes = counters[1];
3173         }
3174         return 0;
3175 }
3176
3177 /**
3178  * Query a flows.
3179  *
3180  * @see rte_flow_query()
3181  * @see rte_flow_ops
3182  */
3183 int
3184 mlx5_flow_query(struct rte_eth_dev *dev __rte_unused,
3185                 struct rte_flow *flow,
3186                 const struct rte_flow_action *action __rte_unused,
3187                 void *data,
3188                 struct rte_flow_error *error)
3189 {
3190         if (flow->cs) {
3191                 int ret;
3192
3193                 ret = mlx5_flow_query_count(flow->cs,
3194                                             &flow->counter_stats,
3195                                             (struct rte_flow_query_count *)data,
3196                                             error);
3197                 if (ret)
3198                         return ret;
3199         } else {
3200                 return rte_flow_error_set(error, EINVAL,
3201                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3202                                           NULL,
3203                                           "no counter found for flow");
3204         }
3205         return 0;
3206 }
3207 #endif
3208
3209 /**
3210  * Isolated mode.
3211  *
3212  * @see rte_flow_isolate()
3213  * @see rte_flow_ops
3214  */
3215 int
3216 mlx5_flow_isolate(struct rte_eth_dev *dev,
3217                   int enable,
3218                   struct rte_flow_error *error)
3219 {
3220         struct priv *priv = dev->data->dev_private;
3221
3222         if (dev->data->dev_started) {
3223                 rte_flow_error_set(error, EBUSY,
3224                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3225                                    NULL,
3226                                    "port must be stopped first");
3227                 return -rte_errno;
3228         }
3229         priv->isolated = !!enable;
3230         if (enable)
3231                 dev->dev_ops = &mlx5_dev_ops_isolate;
3232         else
3233                 dev->dev_ops = &mlx5_dev_ops;
3234         return 0;
3235 }
3236
3237 /**
3238  * Convert a flow director filter to a generic flow.
3239  *
3240  * @param dev
3241  *   Pointer to Ethernet device.
3242  * @param fdir_filter
3243  *   Flow director filter to add.
3244  * @param attributes
3245  *   Generic flow parameters structure.
3246  *
3247  * @return
3248  *   0 on success, a negative errno value otherwise and rte_errno is set.
3249  */
3250 static int
3251 mlx5_fdir_filter_convert(struct rte_eth_dev *dev,
3252                          const struct rte_eth_fdir_filter *fdir_filter,
3253                          struct mlx5_fdir *attributes)
3254 {
3255         struct priv *priv = dev->data->dev_private;
3256         const struct rte_eth_fdir_input *input = &fdir_filter->input;
3257         const struct rte_eth_fdir_masks *mask =
3258                 &dev->data->dev_conf.fdir_conf.mask;
3259
3260         /* Validate queue number. */
3261         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
3262                 DRV_LOG(ERR, "port %u invalid queue number %d",
3263                         dev->data->port_id, fdir_filter->action.rx_queue);
3264                 rte_errno = EINVAL;
3265                 return -rte_errno;
3266         }
3267         attributes->attr.ingress = 1;
3268         attributes->items[0] = (struct rte_flow_item) {
3269                 .type = RTE_FLOW_ITEM_TYPE_ETH,
3270                 .spec = &attributes->l2,
3271                 .mask = &attributes->l2_mask,
3272         };
3273         switch (fdir_filter->action.behavior) {
3274         case RTE_ETH_FDIR_ACCEPT:
3275                 attributes->actions[0] = (struct rte_flow_action){
3276                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
3277                         .conf = &attributes->queue,
3278                 };
3279                 break;
3280         case RTE_ETH_FDIR_REJECT:
3281                 attributes->actions[0] = (struct rte_flow_action){
3282                         .type = RTE_FLOW_ACTION_TYPE_DROP,
3283                 };
3284                 break;
3285         default:
3286                 DRV_LOG(ERR, "port %u invalid behavior %d",
3287                         dev->data->port_id,
3288                         fdir_filter->action.behavior);
3289                 rte_errno = ENOTSUP;
3290                 return -rte_errno;
3291         }
3292         attributes->queue.index = fdir_filter->action.rx_queue;
3293         /* Handle L3. */
3294         switch (fdir_filter->input.flow_type) {
3295         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
3296         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
3297         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
3298                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
3299                         .src_addr = input->flow.ip4_flow.src_ip,
3300                         .dst_addr = input->flow.ip4_flow.dst_ip,
3301                         .time_to_live = input->flow.ip4_flow.ttl,
3302                         .type_of_service = input->flow.ip4_flow.tos,
3303                         .next_proto_id = input->flow.ip4_flow.proto,
3304                 };
3305                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
3306                         .src_addr = mask->ipv4_mask.src_ip,
3307                         .dst_addr = mask->ipv4_mask.dst_ip,
3308                         .time_to_live = mask->ipv4_mask.ttl,
3309                         .type_of_service = mask->ipv4_mask.tos,
3310                         .next_proto_id = mask->ipv4_mask.proto,
3311                 };
3312                 attributes->items[1] = (struct rte_flow_item){
3313                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
3314                         .spec = &attributes->l3,
3315                         .mask = &attributes->l3_mask,
3316                 };
3317                 break;
3318         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
3319         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
3320         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
3321                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
3322                         .hop_limits = input->flow.ipv6_flow.hop_limits,
3323                         .proto = input->flow.ipv6_flow.proto,
3324                 };
3325
3326                 memcpy(attributes->l3.ipv6.hdr.src_addr,
3327                        input->flow.ipv6_flow.src_ip,
3328                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
3329                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
3330                        input->flow.ipv6_flow.dst_ip,
3331                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
3332                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
3333                        mask->ipv6_mask.src_ip,
3334                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
3335                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
3336                        mask->ipv6_mask.dst_ip,
3337                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
3338                 attributes->items[1] = (struct rte_flow_item){
3339                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
3340                         .spec = &attributes->l3,
3341                         .mask = &attributes->l3_mask,
3342                 };
3343                 break;
3344         default:
3345                 DRV_LOG(ERR, "port %u invalid flow type%d",
3346                         dev->data->port_id, fdir_filter->input.flow_type);
3347                 rte_errno = ENOTSUP;
3348                 return -rte_errno;
3349         }
3350         /* Handle L4. */
3351         switch (fdir_filter->input.flow_type) {
3352         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
3353                 attributes->l4.udp.hdr = (struct udp_hdr){
3354                         .src_port = input->flow.udp4_flow.src_port,
3355                         .dst_port = input->flow.udp4_flow.dst_port,
3356                 };
3357                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
3358                         .src_port = mask->src_port_mask,
3359                         .dst_port = mask->dst_port_mask,
3360                 };
3361                 attributes->items[2] = (struct rte_flow_item){
3362                         .type = RTE_FLOW_ITEM_TYPE_UDP,
3363                         .spec = &attributes->l4,
3364                         .mask = &attributes->l4_mask,
3365                 };
3366                 break;
3367         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
3368                 attributes->l4.tcp.hdr = (struct tcp_hdr){
3369                         .src_port = input->flow.tcp4_flow.src_port,
3370                         .dst_port = input->flow.tcp4_flow.dst_port,
3371                 };
3372                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
3373                         .src_port = mask->src_port_mask,
3374                         .dst_port = mask->dst_port_mask,
3375                 };
3376                 attributes->items[2] = (struct rte_flow_item){
3377                         .type = RTE_FLOW_ITEM_TYPE_TCP,
3378                         .spec = &attributes->l4,
3379                         .mask = &attributes->l4_mask,
3380                 };
3381                 break;
3382         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
3383                 attributes->l4.udp.hdr = (struct udp_hdr){
3384                         .src_port = input->flow.udp6_flow.src_port,
3385                         .dst_port = input->flow.udp6_flow.dst_port,
3386                 };
3387                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
3388                         .src_port = mask->src_port_mask,
3389                         .dst_port = mask->dst_port_mask,
3390                 };
3391                 attributes->items[2] = (struct rte_flow_item){
3392                         .type = RTE_FLOW_ITEM_TYPE_UDP,
3393                         .spec = &attributes->l4,
3394                         .mask = &attributes->l4_mask,
3395                 };
3396                 break;
3397         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
3398                 attributes->l4.tcp.hdr = (struct tcp_hdr){
3399                         .src_port = input->flow.tcp6_flow.src_port,
3400                         .dst_port = input->flow.tcp6_flow.dst_port,
3401                 };
3402                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
3403                         .src_port = mask->src_port_mask,
3404                         .dst_port = mask->dst_port_mask,
3405                 };
3406                 attributes->items[2] = (struct rte_flow_item){
3407                         .type = RTE_FLOW_ITEM_TYPE_TCP,
3408                         .spec = &attributes->l4,
3409                         .mask = &attributes->l4_mask,
3410                 };
3411                 break;
3412         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
3413         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
3414                 break;
3415         default:
3416                 DRV_LOG(ERR, "port %u invalid flow type%d",
3417                         dev->data->port_id, fdir_filter->input.flow_type);
3418                 rte_errno = ENOTSUP;
3419                 return -rte_errno;
3420         }
3421         return 0;
3422 }
3423
3424 /**
3425  * Add new flow director filter and store it in list.
3426  *
3427  * @param dev
3428  *   Pointer to Ethernet device.
3429  * @param fdir_filter
3430  *   Flow director filter to add.
3431  *
3432  * @return
3433  *   0 on success, a negative errno value otherwise and rte_errno is set.
3434  */
3435 static int
3436 mlx5_fdir_filter_add(struct rte_eth_dev *dev,
3437                      const struct rte_eth_fdir_filter *fdir_filter)
3438 {
3439         struct priv *priv = dev->data->dev_private;
3440         struct mlx5_fdir attributes = {
3441                 .attr.group = 0,
3442                 .l2_mask = {
3443                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
3444                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
3445                         .type = 0,
3446                 },
3447         };
3448         struct mlx5_flow_parse parser = {
3449                 .layer = HASH_RXQ_ETH,
3450         };
3451         struct rte_flow_error error;
3452         struct rte_flow *flow;
3453         int ret;
3454
3455         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
3456         if (ret)
3457                 return ret;
3458         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
3459                                 attributes.actions, &error, &parser);
3460         if (ret)
3461                 return ret;
3462         flow = mlx5_flow_list_create(dev, &priv->flows, &attributes.attr,
3463                                      attributes.items, attributes.actions,
3464                                      &error);
3465         if (flow) {
3466                 DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id,
3467                         (void *)flow);
3468                 return 0;
3469         }
3470         return -rte_errno;
3471 }
3472
3473 /**
3474  * Delete specific filter.
3475  *
3476  * @param dev
3477  *   Pointer to Ethernet device.
3478  * @param fdir_filter
3479  *   Filter to be deleted.
3480  *
3481  * @return
3482  *   0 on success, a negative errno value otherwise and rte_errno is set.
3483  */
3484 static int
3485 mlx5_fdir_filter_delete(struct rte_eth_dev *dev,
3486                         const struct rte_eth_fdir_filter *fdir_filter)
3487 {
3488         struct priv *priv = dev->data->dev_private;
3489         struct mlx5_fdir attributes = {
3490                 .attr.group = 0,
3491         };
3492         struct mlx5_flow_parse parser = {
3493                 .create = 1,
3494                 .layer = HASH_RXQ_ETH,
3495         };
3496         struct rte_flow_error error;
3497         struct rte_flow *flow;
3498         unsigned int i;
3499         int ret;
3500
3501         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
3502         if (ret)
3503                 return ret;
3504         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
3505                                 attributes.actions, &error, &parser);
3506         if (ret)
3507                 goto exit;
3508         /*
3509          * Special case for drop action which is only set in the
3510          * specifications when the flow is created.  In this situation the
3511          * drop specification is missing.
3512          */
3513         if (parser.drop) {
3514                 struct ibv_flow_spec_action_drop *drop;
3515
3516                 drop = (void *)((uintptr_t)parser.queue[HASH_RXQ_ETH].ibv_attr +
3517                                 parser.queue[HASH_RXQ_ETH].offset);
3518                 *drop = (struct ibv_flow_spec_action_drop){
3519                         .type = IBV_FLOW_SPEC_ACTION_DROP,
3520                         .size = sizeof(struct ibv_flow_spec_action_drop),
3521                 };
3522                 parser.queue[HASH_RXQ_ETH].ibv_attr->num_of_specs++;
3523         }
3524         TAILQ_FOREACH(flow, &priv->flows, next) {
3525                 struct ibv_flow_attr *attr;
3526                 struct ibv_spec_header *attr_h;
3527                 void *spec;
3528                 struct ibv_flow_attr *flow_attr;
3529                 struct ibv_spec_header *flow_h;
3530                 void *flow_spec;
3531                 unsigned int specs_n;
3532                 unsigned int queue_id = parser.drop ? HASH_RXQ_ETH :
3533                                                       parser.layer;
3534
3535                 attr = parser.queue[queue_id].ibv_attr;
3536                 flow_attr = flow->frxq[queue_id].ibv_attr;
3537                 /* Compare first the attributes. */
3538                 if (!flow_attr ||
3539                     memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
3540                         continue;
3541                 if (attr->num_of_specs == 0)
3542                         continue;
3543                 spec = (void *)((uintptr_t)attr +
3544                                 sizeof(struct ibv_flow_attr));
3545                 flow_spec = (void *)((uintptr_t)flow_attr +
3546                                      sizeof(struct ibv_flow_attr));
3547                 specs_n = RTE_MIN(attr->num_of_specs, flow_attr->num_of_specs);
3548                 for (i = 0; i != specs_n; ++i) {
3549                         attr_h = spec;
3550                         flow_h = flow_spec;
3551                         if (memcmp(spec, flow_spec,
3552                                    RTE_MIN(attr_h->size, flow_h->size)))
3553                                 goto wrong_flow;
3554                         spec = (void *)((uintptr_t)spec + attr_h->size);
3555                         flow_spec = (void *)((uintptr_t)flow_spec +
3556                                              flow_h->size);
3557                 }
3558                 /* At this point, the flow match. */
3559                 break;
3560 wrong_flow:
3561                 /* The flow does not match. */
3562                 continue;
3563         }
3564         ret = rte_errno; /* Save rte_errno before cleanup. */
3565         if (flow)
3566                 mlx5_flow_list_destroy(dev, &priv->flows, flow);
3567 exit:
3568         for (i = 0; i != hash_rxq_init_n; ++i) {
3569                 if (parser.queue[i].ibv_attr)
3570                         rte_free(parser.queue[i].ibv_attr);
3571         }
3572         rte_errno = ret; /* Restore rte_errno. */
3573         return -rte_errno;
3574 }
3575
3576 /**
3577  * Update queue for specific filter.
3578  *
3579  * @param dev
3580  *   Pointer to Ethernet device.
3581  * @param fdir_filter
3582  *   Filter to be updated.
3583  *
3584  * @return
3585  *   0 on success, a negative errno value otherwise and rte_errno is set.
3586  */
3587 static int
3588 mlx5_fdir_filter_update(struct rte_eth_dev *dev,
3589                         const struct rte_eth_fdir_filter *fdir_filter)
3590 {
3591         int ret;
3592
3593         ret = mlx5_fdir_filter_delete(dev, fdir_filter);
3594         if (ret)
3595                 return ret;
3596         return mlx5_fdir_filter_add(dev, fdir_filter);
3597 }
3598
3599 /**
3600  * Flush all filters.
3601  *
3602  * @param dev
3603  *   Pointer to Ethernet device.
3604  */
3605 static void
3606 mlx5_fdir_filter_flush(struct rte_eth_dev *dev)
3607 {
3608         struct priv *priv = dev->data->dev_private;
3609
3610         mlx5_flow_list_flush(dev, &priv->flows);
3611 }
3612
3613 /**
3614  * Get flow director information.
3615  *
3616  * @param dev
3617  *   Pointer to Ethernet device.
3618  * @param[out] fdir_info
3619  *   Resulting flow director information.
3620  */
3621 static void
3622 mlx5_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
3623 {
3624         struct rte_eth_fdir_masks *mask =
3625                 &dev->data->dev_conf.fdir_conf.mask;
3626
3627         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
3628         fdir_info->guarant_spc = 0;
3629         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
3630         fdir_info->max_flexpayload = 0;
3631         fdir_info->flow_types_mask[0] = 0;
3632         fdir_info->flex_payload_unit = 0;
3633         fdir_info->max_flex_payload_segment_num = 0;
3634         fdir_info->flex_payload_limit = 0;
3635         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
3636 }
3637
3638 /**
3639  * Deal with flow director operations.
3640  *
3641  * @param dev
3642  *   Pointer to Ethernet device.
3643  * @param filter_op
3644  *   Operation to perform.
3645  * @param arg
3646  *   Pointer to operation-specific structure.
3647  *
3648  * @return
3649  *   0 on success, a negative errno value otherwise and rte_errno is set.
3650  */
3651 static int
3652 mlx5_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
3653                     void *arg)
3654 {
3655         enum rte_fdir_mode fdir_mode =
3656                 dev->data->dev_conf.fdir_conf.mode;
3657
3658         if (filter_op == RTE_ETH_FILTER_NOP)
3659                 return 0;
3660         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
3661             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
3662                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
3663                         dev->data->port_id, fdir_mode);
3664                 rte_errno = EINVAL;
3665                 return -rte_errno;
3666         }
3667         switch (filter_op) {
3668         case RTE_ETH_FILTER_ADD:
3669                 return mlx5_fdir_filter_add(dev, arg);
3670         case RTE_ETH_FILTER_UPDATE:
3671                 return mlx5_fdir_filter_update(dev, arg);
3672         case RTE_ETH_FILTER_DELETE:
3673                 return mlx5_fdir_filter_delete(dev, arg);
3674         case RTE_ETH_FILTER_FLUSH:
3675                 mlx5_fdir_filter_flush(dev);
3676                 break;
3677         case RTE_ETH_FILTER_INFO:
3678                 mlx5_fdir_info_get(dev, arg);
3679                 break;
3680         default:
3681                 DRV_LOG(DEBUG, "port %u unknown operation %u",
3682                         dev->data->port_id, filter_op);
3683                 rte_errno = EINVAL;
3684                 return -rte_errno;
3685         }
3686         return 0;
3687 }
3688
3689 /**
3690  * Manage filter operations.
3691  *
3692  * @param dev
3693  *   Pointer to Ethernet device structure.
3694  * @param filter_type
3695  *   Filter type.
3696  * @param filter_op
3697  *   Operation to perform.
3698  * @param arg
3699  *   Pointer to operation-specific structure.
3700  *
3701  * @return
3702  *   0 on success, a negative errno value otherwise and rte_errno is set.
3703  */
3704 int
3705 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
3706                      enum rte_filter_type filter_type,
3707                      enum rte_filter_op filter_op,
3708                      void *arg)
3709 {
3710         switch (filter_type) {
3711         case RTE_ETH_FILTER_GENERIC:
3712                 if (filter_op != RTE_ETH_FILTER_GET) {
3713                         rte_errno = EINVAL;
3714                         return -rte_errno;
3715                 }
3716                 *(const void **)arg = &mlx5_flow_ops;
3717                 return 0;
3718         case RTE_ETH_FILTER_FDIR:
3719                 return mlx5_fdir_ctrl_func(dev, filter_op, arg);
3720         default:
3721                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
3722                         dev->data->port_id, filter_type);
3723                 rte_errno = ENOTSUP;
3724                 return -rte_errno;
3725         }
3726         return 0;
3727 }
3728
3729 /**
3730  * Detect number of Verbs flow priorities supported.
3731  *
3732  * @param dev
3733  *   Pointer to Ethernet device.
3734  *
3735  * @return
3736  *   number of supported Verbs flow priority.
3737  */
3738 unsigned int
3739 mlx5_get_max_verbs_prio(struct rte_eth_dev *dev)
3740 {
3741         struct priv *priv = dev->data->dev_private;
3742         unsigned int verb_priorities = MLX5_VERBS_FLOW_PRIO_8;
3743         struct {
3744                 struct ibv_flow_attr attr;
3745                 struct ibv_flow_spec_eth eth;
3746                 struct ibv_flow_spec_action_drop drop;
3747         } flow_attr = {
3748                 .attr = {
3749                         .num_of_specs = 2,
3750                 },
3751                 .eth = {
3752                         .type = IBV_FLOW_SPEC_ETH,
3753                         .size = sizeof(struct ibv_flow_spec_eth),
3754                 },
3755                 .drop = {
3756                         .size = sizeof(struct ibv_flow_spec_action_drop),
3757                         .type = IBV_FLOW_SPEC_ACTION_DROP,
3758                 },
3759         };
3760         struct ibv_flow *flow;
3761
3762         do {
3763                 flow_attr.attr.priority = verb_priorities - 1;
3764                 flow = mlx5_glue->create_flow(priv->flow_drop_queue->qp,
3765                                               &flow_attr.attr);
3766                 if (flow) {
3767                         claim_zero(mlx5_glue->destroy_flow(flow));
3768                         /* Try more priorities. */
3769                         verb_priorities *= 2;
3770                 } else {
3771                         /* Failed, restore last right number. */
3772                         verb_priorities /= 2;
3773                         break;
3774                 }
3775         } while (1);
3776         DRV_LOG(DEBUG, "port %u Verbs flow priorities: %d,"
3777                 " user flow priorities: %d",
3778                 dev->data->port_id, verb_priorities, MLX5_CTRL_FLOW_PRIORITY);
3779         return verb_priorities;
3780 }