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,
 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         /* Default to outer RSS. */
1170         if (!parser->rss_conf.level)
1171                 parser->rss_conf.level = 1;
1172         layer = outer ? parser->out_layer : parser->layer;
1173         if (layer == HASH_RXQ_TUNNEL)
1174                 layer = HASH_RXQ_ETH;
1175         if (outer) {
1176                 /* Only one hash type for outer RSS. */
1177                 if (rss && layer == HASH_RXQ_ETH) {
1178                         start = HASH_RXQ_TCPV4;
1179                 } else if (rss && layer != HASH_RXQ_ETH &&
1180                            !(rss & hash_rxq_init[layer].dpdk_rss_hf)) {
1181                         /* If RSS not match L4 pattern, try L3 RSS. */
1182                         if (layer < HASH_RXQ_IPV4)
1183                                 layer = HASH_RXQ_IPV4;
1184                         else if (layer > HASH_RXQ_IPV4 && layer < HASH_RXQ_IPV6)
1185                                 layer = HASH_RXQ_IPV6;
1186                         start = layer;
1187                 } else {
1188                         start = layer;
1189                 }
1190                 /* Scan first valid hash type. */
1191                 for (i = start; rss && i <= layer; ++i) {
1192                         if (!parser->queue[i].ibv_attr)
1193                                 continue;
1194                         if (hash_rxq_init[i].dpdk_rss_hf & rss)
1195                                 break;
1196                 }
1197                 if (rss && i <= layer)
1198                         parser->queue[layer].hash_fields =
1199                                         hash_rxq_init[i].hash_fields;
1200                 /* Trim unused hash types. */
1201                 for (i = 0; i != hash_rxq_init_n; ++i) {
1202                         if (parser->queue[i].ibv_attr && i != layer) {
1203                                 rte_free(parser->queue[i].ibv_attr);
1204                                 parser->queue[i].ibv_attr = NULL;
1205                         }
1206                 }
1207         } else {
1208                 /* Expand for inner or normal RSS. */
1209                 if (rss && (layer == HASH_RXQ_ETH || layer == HASH_RXQ_IPV4))
1210                         start = HASH_RXQ_TCPV4;
1211                 else if (rss && layer == HASH_RXQ_IPV6)
1212                         start = HASH_RXQ_TCPV6;
1213                 else
1214                         start = layer;
1215                 /* For L4 pattern, try L3 RSS if no L4 RSS. */
1216                 /* Trim unused hash types. */
1217                 for (i = 0; i != hash_rxq_init_n; ++i) {
1218                         if (!parser->queue[i].ibv_attr)
1219                                 continue;
1220                         if (i < start || i > layer) {
1221                                 rte_free(parser->queue[i].ibv_attr);
1222                                 parser->queue[i].ibv_attr = NULL;
1223                                 continue;
1224                         }
1225                         if (!rss)
1226                                 continue;
1227                         if (hash_rxq_init[i].dpdk_rss_hf & rss) {
1228                                 parser->queue[i].hash_fields =
1229                                                 hash_rxq_init[i].hash_fields;
1230                         } else if (i != layer) {
1231                                 /* Remove unused RSS expansion. */
1232                                 rte_free(parser->queue[i].ibv_attr);
1233                                 parser->queue[i].ibv_attr = NULL;
1234                         } else if (layer < HASH_RXQ_IPV4 &&
1235                                    (hash_rxq_init[HASH_RXQ_IPV4].dpdk_rss_hf &
1236                                     rss)) {
1237                                 /* Allow IPv4 RSS on L4 pattern. */
1238                                 parser->queue[i].hash_fields =
1239                                         hash_rxq_init[HASH_RXQ_IPV4]
1240                                                 .hash_fields;
1241                         } else if (i > HASH_RXQ_IPV4 && i < HASH_RXQ_IPV6 &&
1242                                    (hash_rxq_init[HASH_RXQ_IPV6].dpdk_rss_hf &
1243                                     rss)) {
1244                                 /* Allow IPv4 RSS on L4 pattern. */
1245                                 parser->queue[i].hash_fields =
1246                                         hash_rxq_init[HASH_RXQ_IPV6]
1247                                                 .hash_fields;
1248                         }
1249                 }
1250         }
1251         return 0;
1252 }
1253
1254 /**
1255  * Validate and convert a flow supported by the NIC.
1256  *
1257  * @param dev
1258  *   Pointer to Ethernet device.
1259  * @param[in] attr
1260  *   Flow rule attributes.
1261  * @param[in] pattern
1262  *   Pattern specification (list terminated by the END pattern item).
1263  * @param[in] actions
1264  *   Associated actions (list terminated by the END action).
1265  * @param[out] error
1266  *   Perform verbose error reporting if not NULL.
1267  * @param[in, out] parser
1268  *   Internal parser structure.
1269  *
1270  * @return
1271  *   0 on success, a negative errno value otherwise and rte_errno is set.
1272  */
1273 static int
1274 mlx5_flow_convert(struct rte_eth_dev *dev,
1275                   const struct rte_flow_attr *attr,
1276                   const struct rte_flow_item items[],
1277                   const struct rte_flow_action actions[],
1278                   struct rte_flow_error *error,
1279                   struct mlx5_flow_parse *parser)
1280 {
1281         const struct mlx5_flow_items *cur_item = mlx5_flow_items;
1282         unsigned int i;
1283         int ret;
1284
1285         /* First step. Validate the attributes, items and actions. */
1286         *parser = (struct mlx5_flow_parse){
1287                 .create = parser->create,
1288                 .layer = HASH_RXQ_ETH,
1289                 .mark_id = MLX5_FLOW_MARK_DEFAULT,
1290         };
1291         ret = mlx5_flow_convert_attributes(attr, error);
1292         if (ret)
1293                 return ret;
1294         ret = mlx5_flow_convert_actions(dev, actions, error, parser);
1295         if (ret)
1296                 return ret;
1297         ret = mlx5_flow_convert_items_validate(dev, items, error, parser);
1298         if (ret)
1299                 return ret;
1300         mlx5_flow_convert_finalise(parser);
1301         /*
1302          * Second step.
1303          * Allocate the memory space to store verbs specifications.
1304          */
1305         if (parser->drop) {
1306                 unsigned int offset = parser->queue[HASH_RXQ_ETH].offset;
1307
1308                 parser->queue[HASH_RXQ_ETH].ibv_attr =
1309                         mlx5_flow_convert_allocate(offset, error);
1310                 if (!parser->queue[HASH_RXQ_ETH].ibv_attr)
1311                         goto exit_enomem;
1312                 parser->queue[HASH_RXQ_ETH].offset =
1313                         sizeof(struct ibv_flow_attr);
1314         } else {
1315                 for (i = 0; i != hash_rxq_init_n; ++i) {
1316                         unsigned int offset;
1317
1318                         offset = parser->queue[i].offset;
1319                         parser->queue[i].ibv_attr =
1320                                 mlx5_flow_convert_allocate(offset, error);
1321                         if (!parser->queue[i].ibv_attr)
1322                                 goto exit_enomem;
1323                         parser->queue[i].offset = sizeof(struct ibv_flow_attr);
1324                 }
1325         }
1326         /* Third step. Conversion parse, fill the specifications. */
1327         parser->inner = 0;
1328         parser->tunnel = 0;
1329         parser->layer = HASH_RXQ_ETH;
1330         for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
1331                 struct mlx5_flow_data data = {
1332                         .dev = dev,
1333                         .parser = parser,
1334                         .error = error,
1335                 };
1336
1337                 if (items->type == RTE_FLOW_ITEM_TYPE_VOID)
1338                         continue;
1339                 cur_item = &mlx5_flow_items[items->type];
1340                 ret = cur_item->convert(items,
1341                                         (cur_item->default_mask ?
1342                                          cur_item->default_mask :
1343                                          cur_item->mask),
1344                                          &data);
1345                 if (ret)
1346                         goto exit_free;
1347         }
1348         if (!parser->drop) {
1349                 /* RSS check, remove unused hash types. */
1350                 ret = mlx5_flow_convert_rss(parser);
1351                 if (ret)
1352                         goto exit_free;
1353                 /* Complete missing specification. */
1354                 mlx5_flow_convert_finalise(parser);
1355         }
1356         mlx5_flow_update_priority(dev, parser, attr);
1357         if (parser->mark)
1358                 mlx5_flow_create_flag_mark(parser, parser->mark_id);
1359         if (parser->count && parser->create) {
1360                 mlx5_flow_create_count(dev, parser);
1361                 if (!parser->cs)
1362                         goto exit_count_error;
1363         }
1364 exit_free:
1365         /* Only verification is expected, all resources should be released. */
1366         if (!parser->create) {
1367                 for (i = 0; i != hash_rxq_init_n; ++i) {
1368                         if (parser->queue[i].ibv_attr) {
1369                                 rte_free(parser->queue[i].ibv_attr);
1370                                 parser->queue[i].ibv_attr = NULL;
1371                         }
1372                 }
1373         }
1374         return ret;
1375 exit_enomem:
1376         for (i = 0; i != hash_rxq_init_n; ++i) {
1377                 if (parser->queue[i].ibv_attr) {
1378                         rte_free(parser->queue[i].ibv_attr);
1379                         parser->queue[i].ibv_attr = NULL;
1380                 }
1381         }
1382         rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1383                            NULL, "cannot allocate verbs spec attributes");
1384         return -rte_errno;
1385 exit_count_error:
1386         rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
1387                            NULL, "cannot create counter");
1388         return -rte_errno;
1389 }
1390
1391 /**
1392  * Copy the specification created into the flow.
1393  *
1394  * @param parser
1395  *   Internal parser structure.
1396  * @param src
1397  *   Create specification.
1398  * @param size
1399  *   Size in bytes of the specification to copy.
1400  */
1401 static void
1402 mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
1403                       unsigned int size)
1404 {
1405         unsigned int i;
1406         void *dst;
1407
1408         for (i = 0; i != hash_rxq_init_n; ++i) {
1409                 if (!parser->queue[i].ibv_attr)
1410                         continue;
1411                 dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1412                                 parser->queue[i].offset);
1413                 memcpy(dst, src, size);
1414                 ++parser->queue[i].ibv_attr->num_of_specs;
1415                 parser->queue[i].offset += size;
1416         }
1417 }
1418
1419 /**
1420  * Convert Ethernet item to Verbs specification.
1421  *
1422  * @param item[in]
1423  *   Item specification.
1424  * @param default_mask[in]
1425  *   Default bit-masks to use when item->mask is not provided.
1426  * @param data[in, out]
1427  *   User structure.
1428  *
1429  * @return
1430  *   0 on success, a negative errno value otherwise and rte_errno is set.
1431  */
1432 static int
1433 mlx5_flow_create_eth(const struct rte_flow_item *item,
1434                      const void *default_mask,
1435                      struct mlx5_flow_data *data)
1436 {
1437         const struct rte_flow_item_eth *spec = item->spec;
1438         const struct rte_flow_item_eth *mask = item->mask;
1439         struct mlx5_flow_parse *parser = data->parser;
1440         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1441         struct ibv_flow_spec_eth eth = {
1442                 .type = parser->inner | IBV_FLOW_SPEC_ETH,
1443                 .size = eth_size,
1444         };
1445
1446         parser->layer = HASH_RXQ_ETH;
1447         if (spec) {
1448                 unsigned int i;
1449
1450                 if (!mask)
1451                         mask = default_mask;
1452                 memcpy(&eth.val.dst_mac, spec->dst.addr_bytes, ETHER_ADDR_LEN);
1453                 memcpy(&eth.val.src_mac, spec->src.addr_bytes, ETHER_ADDR_LEN);
1454                 eth.val.ether_type = spec->type;
1455                 memcpy(&eth.mask.dst_mac, mask->dst.addr_bytes, ETHER_ADDR_LEN);
1456                 memcpy(&eth.mask.src_mac, mask->src.addr_bytes, ETHER_ADDR_LEN);
1457                 eth.mask.ether_type = mask->type;
1458                 /* Remove unwanted bits from values. */
1459                 for (i = 0; i < ETHER_ADDR_LEN; ++i) {
1460                         eth.val.dst_mac[i] &= eth.mask.dst_mac[i];
1461                         eth.val.src_mac[i] &= eth.mask.src_mac[i];
1462                 }
1463                 eth.val.ether_type &= eth.mask.ether_type;
1464         }
1465         mlx5_flow_create_copy(parser, &eth, eth_size);
1466         return 0;
1467 }
1468
1469 /**
1470  * Convert VLAN item to Verbs specification.
1471  *
1472  * @param item[in]
1473  *   Item specification.
1474  * @param default_mask[in]
1475  *   Default bit-masks to use when item->mask is not provided.
1476  * @param data[in, out]
1477  *   User structure.
1478  *
1479  * @return
1480  *   0 on success, a negative errno value otherwise and rte_errno is set.
1481  */
1482 static int
1483 mlx5_flow_create_vlan(const struct rte_flow_item *item,
1484                       const void *default_mask,
1485                       struct mlx5_flow_data *data)
1486 {
1487         const struct rte_flow_item_vlan *spec = item->spec;
1488         const struct rte_flow_item_vlan *mask = item->mask;
1489         struct mlx5_flow_parse *parser = data->parser;
1490         struct ibv_flow_spec_eth *eth;
1491         const unsigned int eth_size = sizeof(struct ibv_flow_spec_eth);
1492         const char *msg = "VLAN cannot be empty";
1493
1494         if (spec) {
1495                 unsigned int i;
1496                 if (!mask)
1497                         mask = default_mask;
1498
1499                 for (i = 0; i != hash_rxq_init_n; ++i) {
1500                         if (!parser->queue[i].ibv_attr)
1501                                 continue;
1502
1503                         eth = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1504                                        parser->queue[i].offset - eth_size);
1505                         eth->val.vlan_tag = spec->tci;
1506                         eth->mask.vlan_tag = mask->tci;
1507                         eth->val.vlan_tag &= eth->mask.vlan_tag;
1508                         /*
1509                          * From verbs perspective an empty VLAN is equivalent
1510                          * to a packet without VLAN layer.
1511                          */
1512                         if (!eth->mask.vlan_tag)
1513                                 goto error;
1514                         /* Outer TPID cannot be matched. */
1515                         if (eth->mask.ether_type) {
1516                                 msg = "VLAN TPID matching is not supported";
1517                                 goto error;
1518                         }
1519                         eth->val.ether_type = spec->inner_type;
1520                         eth->mask.ether_type = mask->inner_type;
1521                         eth->val.ether_type &= eth->mask.ether_type;
1522                 }
1523                 return 0;
1524         }
1525 error:
1526         return rte_flow_error_set(data->error, EINVAL, RTE_FLOW_ERROR_TYPE_ITEM,
1527                                   item, msg);
1528 }
1529
1530 /**
1531  * Convert IPv4 item to Verbs specification.
1532  *
1533  * @param item[in]
1534  *   Item specification.
1535  * @param default_mask[in]
1536  *   Default bit-masks to use when item->mask is not provided.
1537  * @param data[in, out]
1538  *   User structure.
1539  *
1540  * @return
1541  *   0 on success, a negative errno value otherwise and rte_errno is set.
1542  */
1543 static int
1544 mlx5_flow_create_ipv4(const struct rte_flow_item *item,
1545                       const void *default_mask,
1546                       struct mlx5_flow_data *data)
1547 {
1548         struct priv *priv = data->dev->data->dev_private;
1549         const struct rte_flow_item_ipv4 *spec = item->spec;
1550         const struct rte_flow_item_ipv4 *mask = item->mask;
1551         struct mlx5_flow_parse *parser = data->parser;
1552         unsigned int ipv4_size = sizeof(struct ibv_flow_spec_ipv4_ext);
1553         struct ibv_flow_spec_ipv4_ext ipv4 = {
1554                 .type = parser->inner | IBV_FLOW_SPEC_IPV4_EXT,
1555                 .size = ipv4_size,
1556         };
1557
1558         if (parser->layer == HASH_RXQ_TUNNEL &&
1559             parser->tunnel == ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)] &&
1560             !priv->config.l3_vxlan_en)
1561                 return rte_flow_error_set(data->error, EINVAL,
1562                                           RTE_FLOW_ERROR_TYPE_ITEM,
1563                                           item,
1564                                           "L3 VXLAN not enabled by device"
1565                                           " parameter and/or not configured"
1566                                           " in firmware");
1567         parser->layer = HASH_RXQ_IPV4;
1568         if (spec) {
1569                 if (!mask)
1570                         mask = default_mask;
1571                 ipv4.val = (struct ibv_flow_ipv4_ext_filter){
1572                         .src_ip = spec->hdr.src_addr,
1573                         .dst_ip = spec->hdr.dst_addr,
1574                         .proto = spec->hdr.next_proto_id,
1575                         .tos = spec->hdr.type_of_service,
1576                 };
1577                 ipv4.mask = (struct ibv_flow_ipv4_ext_filter){
1578                         .src_ip = mask->hdr.src_addr,
1579                         .dst_ip = mask->hdr.dst_addr,
1580                         .proto = mask->hdr.next_proto_id,
1581                         .tos = mask->hdr.type_of_service,
1582                 };
1583                 /* Remove unwanted bits from values. */
1584                 ipv4.val.src_ip &= ipv4.mask.src_ip;
1585                 ipv4.val.dst_ip &= ipv4.mask.dst_ip;
1586                 ipv4.val.proto &= ipv4.mask.proto;
1587                 ipv4.val.tos &= ipv4.mask.tos;
1588         }
1589         mlx5_flow_create_copy(parser, &ipv4, ipv4_size);
1590         return 0;
1591 }
1592
1593 /**
1594  * Convert IPv6 item to Verbs specification.
1595  *
1596  * @param item[in]
1597  *   Item specification.
1598  * @param default_mask[in]
1599  *   Default bit-masks to use when item->mask is not provided.
1600  * @param data[in, out]
1601  *   User structure.
1602  *
1603  * @return
1604  *   0 on success, a negative errno value otherwise and rte_errno is set.
1605  */
1606 static int
1607 mlx5_flow_create_ipv6(const struct rte_flow_item *item,
1608                       const void *default_mask,
1609                       struct mlx5_flow_data *data)
1610 {
1611         struct priv *priv = data->dev->data->dev_private;
1612         const struct rte_flow_item_ipv6 *spec = item->spec;
1613         const struct rte_flow_item_ipv6 *mask = item->mask;
1614         struct mlx5_flow_parse *parser = data->parser;
1615         unsigned int ipv6_size = sizeof(struct ibv_flow_spec_ipv6);
1616         struct ibv_flow_spec_ipv6 ipv6 = {
1617                 .type = parser->inner | IBV_FLOW_SPEC_IPV6,
1618                 .size = ipv6_size,
1619         };
1620
1621         if (parser->layer == HASH_RXQ_TUNNEL &&
1622             parser->tunnel == ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)] &&
1623             !priv->config.l3_vxlan_en)
1624                 return rte_flow_error_set(data->error, EINVAL,
1625                                           RTE_FLOW_ERROR_TYPE_ITEM,
1626                                           item,
1627                                           "L3 VXLAN not enabled by device"
1628                                           " parameter and/or not configured"
1629                                           " in firmware");
1630         parser->layer = HASH_RXQ_IPV6;
1631         if (spec) {
1632                 unsigned int i;
1633                 uint32_t vtc_flow_val;
1634                 uint32_t vtc_flow_mask;
1635
1636                 if (!mask)
1637                         mask = default_mask;
1638                 memcpy(&ipv6.val.src_ip, spec->hdr.src_addr,
1639                        RTE_DIM(ipv6.val.src_ip));
1640                 memcpy(&ipv6.val.dst_ip, spec->hdr.dst_addr,
1641                        RTE_DIM(ipv6.val.dst_ip));
1642                 memcpy(&ipv6.mask.src_ip, mask->hdr.src_addr,
1643                        RTE_DIM(ipv6.mask.src_ip));
1644                 memcpy(&ipv6.mask.dst_ip, mask->hdr.dst_addr,
1645                        RTE_DIM(ipv6.mask.dst_ip));
1646                 vtc_flow_val = rte_be_to_cpu_32(spec->hdr.vtc_flow);
1647                 vtc_flow_mask = rte_be_to_cpu_32(mask->hdr.vtc_flow);
1648                 ipv6.val.flow_label =
1649                         rte_cpu_to_be_32((vtc_flow_val & IPV6_HDR_FL_MASK) >>
1650                                          IPV6_HDR_FL_SHIFT);
1651                 ipv6.val.traffic_class = (vtc_flow_val & IPV6_HDR_TC_MASK) >>
1652                                          IPV6_HDR_TC_SHIFT;
1653                 ipv6.val.next_hdr = spec->hdr.proto;
1654                 ipv6.val.hop_limit = spec->hdr.hop_limits;
1655                 ipv6.mask.flow_label =
1656                         rte_cpu_to_be_32((vtc_flow_mask & IPV6_HDR_FL_MASK) >>
1657                                          IPV6_HDR_FL_SHIFT);
1658                 ipv6.mask.traffic_class = (vtc_flow_mask & IPV6_HDR_TC_MASK) >>
1659                                           IPV6_HDR_TC_SHIFT;
1660                 ipv6.mask.next_hdr = mask->hdr.proto;
1661                 ipv6.mask.hop_limit = mask->hdr.hop_limits;
1662                 /* Remove unwanted bits from values. */
1663                 for (i = 0; i < RTE_DIM(ipv6.val.src_ip); ++i) {
1664                         ipv6.val.src_ip[i] &= ipv6.mask.src_ip[i];
1665                         ipv6.val.dst_ip[i] &= ipv6.mask.dst_ip[i];
1666                 }
1667                 ipv6.val.flow_label &= ipv6.mask.flow_label;
1668                 ipv6.val.traffic_class &= ipv6.mask.traffic_class;
1669                 ipv6.val.next_hdr &= ipv6.mask.next_hdr;
1670                 ipv6.val.hop_limit &= ipv6.mask.hop_limit;
1671         }
1672         mlx5_flow_create_copy(parser, &ipv6, ipv6_size);
1673         return 0;
1674 }
1675
1676 /**
1677  * Convert UDP item to Verbs specification.
1678  *
1679  * @param item[in]
1680  *   Item specification.
1681  * @param default_mask[in]
1682  *   Default bit-masks to use when item->mask is not provided.
1683  * @param data[in, out]
1684  *   User structure.
1685  *
1686  * @return
1687  *   0 on success, a negative errno value otherwise and rte_errno is set.
1688  */
1689 static int
1690 mlx5_flow_create_udp(const struct rte_flow_item *item,
1691                      const void *default_mask,
1692                      struct mlx5_flow_data *data)
1693 {
1694         const struct rte_flow_item_udp *spec = item->spec;
1695         const struct rte_flow_item_udp *mask = item->mask;
1696         struct mlx5_flow_parse *parser = data->parser;
1697         unsigned int udp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1698         struct ibv_flow_spec_tcp_udp udp = {
1699                 .type = parser->inner | IBV_FLOW_SPEC_UDP,
1700                 .size = udp_size,
1701         };
1702
1703         if (parser->layer == HASH_RXQ_IPV4)
1704                 parser->layer = HASH_RXQ_UDPV4;
1705         else
1706                 parser->layer = HASH_RXQ_UDPV6;
1707         if (spec) {
1708                 if (!mask)
1709                         mask = default_mask;
1710                 udp.val.dst_port = spec->hdr.dst_port;
1711                 udp.val.src_port = spec->hdr.src_port;
1712                 udp.mask.dst_port = mask->hdr.dst_port;
1713                 udp.mask.src_port = mask->hdr.src_port;
1714                 /* Remove unwanted bits from values. */
1715                 udp.val.src_port &= udp.mask.src_port;
1716                 udp.val.dst_port &= udp.mask.dst_port;
1717         }
1718         mlx5_flow_create_copy(parser, &udp, udp_size);
1719         return 0;
1720 }
1721
1722 /**
1723  * Convert TCP item to Verbs specification.
1724  *
1725  * @param item[in]
1726  *   Item specification.
1727  * @param default_mask[in]
1728  *   Default bit-masks to use when item->mask is not provided.
1729  * @param data[in, out]
1730  *   User structure.
1731  *
1732  * @return
1733  *   0 on success, a negative errno value otherwise and rte_errno is set.
1734  */
1735 static int
1736 mlx5_flow_create_tcp(const struct rte_flow_item *item,
1737                      const void *default_mask,
1738                      struct mlx5_flow_data *data)
1739 {
1740         const struct rte_flow_item_tcp *spec = item->spec;
1741         const struct rte_flow_item_tcp *mask = item->mask;
1742         struct mlx5_flow_parse *parser = data->parser;
1743         unsigned int tcp_size = sizeof(struct ibv_flow_spec_tcp_udp);
1744         struct ibv_flow_spec_tcp_udp tcp = {
1745                 .type = parser->inner | IBV_FLOW_SPEC_TCP,
1746                 .size = tcp_size,
1747         };
1748
1749         if (parser->layer == HASH_RXQ_IPV4)
1750                 parser->layer = HASH_RXQ_TCPV4;
1751         else
1752                 parser->layer = HASH_RXQ_TCPV6;
1753         if (spec) {
1754                 if (!mask)
1755                         mask = default_mask;
1756                 tcp.val.dst_port = spec->hdr.dst_port;
1757                 tcp.val.src_port = spec->hdr.src_port;
1758                 tcp.mask.dst_port = mask->hdr.dst_port;
1759                 tcp.mask.src_port = mask->hdr.src_port;
1760                 /* Remove unwanted bits from values. */
1761                 tcp.val.src_port &= tcp.mask.src_port;
1762                 tcp.val.dst_port &= tcp.mask.dst_port;
1763         }
1764         mlx5_flow_create_copy(parser, &tcp, tcp_size);
1765         return 0;
1766 }
1767
1768 /**
1769  * Convert VXLAN item to Verbs specification.
1770  *
1771  * @param item[in]
1772  *   Item specification.
1773  * @param default_mask[in]
1774  *   Default bit-masks to use when item->mask is not provided.
1775  * @param data[in, out]
1776  *   User structure.
1777  *
1778  * @return
1779  *   0 on success, a negative errno value otherwise and rte_errno is set.
1780  */
1781 static int
1782 mlx5_flow_create_vxlan(const struct rte_flow_item *item,
1783                        const void *default_mask,
1784                        struct mlx5_flow_data *data)
1785 {
1786         const struct rte_flow_item_vxlan *spec = item->spec;
1787         const struct rte_flow_item_vxlan *mask = item->mask;
1788         struct mlx5_flow_parse *parser = data->parser;
1789         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1790         struct ibv_flow_spec_tunnel vxlan = {
1791                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1792                 .size = size,
1793         };
1794         union vni {
1795                 uint32_t vlan_id;
1796                 uint8_t vni[4];
1797         } id;
1798
1799         id.vni[0] = 0;
1800         parser->inner = IBV_FLOW_SPEC_INNER;
1801         parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)];
1802         parser->out_layer = parser->layer;
1803         parser->layer = HASH_RXQ_TUNNEL;
1804         /* Default VXLAN to outer RSS. */
1805         if (!parser->rss_conf.level)
1806                 parser->rss_conf.level = 1;
1807         if (spec) {
1808                 if (!mask)
1809                         mask = default_mask;
1810                 memcpy(&id.vni[1], spec->vni, 3);
1811                 vxlan.val.tunnel_id = id.vlan_id;
1812                 memcpy(&id.vni[1], mask->vni, 3);
1813                 vxlan.mask.tunnel_id = id.vlan_id;
1814                 /* Remove unwanted bits from values. */
1815                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1816         }
1817         /*
1818          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1819          * layer is defined in the Verbs specification it is interpreted as
1820          * wildcard and all packets will match this rule, if it follows a full
1821          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1822          * before will also match this rule.
1823          * To avoid such situation, VNI 0 is currently refused.
1824          */
1825         /* Only allow tunnel w/o tunnel id pattern after proper outer spec. */
1826         if (parser->out_layer == HASH_RXQ_ETH && !vxlan.val.tunnel_id)
1827                 return rte_flow_error_set(data->error, EINVAL,
1828                                           RTE_FLOW_ERROR_TYPE_ITEM,
1829                                           item,
1830                                           "VxLAN vni cannot be 0");
1831         mlx5_flow_create_copy(parser, &vxlan, size);
1832         return 0;
1833 }
1834
1835 /**
1836  * Convert VXLAN-GPE item to Verbs specification.
1837  *
1838  * @param item[in]
1839  *   Item specification.
1840  * @param default_mask[in]
1841  *   Default bit-masks to use when item->mask is not provided.
1842  * @param data[in, out]
1843  *   User structure.
1844  *
1845  * @return
1846  *   0 on success, a negative errno value otherwise and rte_errno is set.
1847  */
1848 static int
1849 mlx5_flow_create_vxlan_gpe(const struct rte_flow_item *item,
1850                            const void *default_mask,
1851                            struct mlx5_flow_data *data)
1852 {
1853         struct priv *priv = data->dev->data->dev_private;
1854         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1855         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1856         struct mlx5_flow_parse *parser = data->parser;
1857         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1858         struct ibv_flow_spec_tunnel vxlan = {
1859                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1860                 .size = size,
1861         };
1862         union vni {
1863                 uint32_t vlan_id;
1864                 uint8_t vni[4];
1865         } id;
1866
1867         if (!priv->config.l3_vxlan_en)
1868                 return rte_flow_error_set(data->error, EINVAL,
1869                                           RTE_FLOW_ERROR_TYPE_ITEM,
1870                                           item,
1871                                           "L3 VXLAN not enabled by device"
1872                                           " parameter and/or not configured"
1873                                           " in firmware");
1874         id.vni[0] = 0;
1875         parser->inner = IBV_FLOW_SPEC_INNER;
1876         parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN_GPE)];
1877         parser->out_layer = parser->layer;
1878         parser->layer = HASH_RXQ_TUNNEL;
1879         /* Default VXLAN-GPE to outer RSS. */
1880         if (!parser->rss_conf.level)
1881                 parser->rss_conf.level = 1;
1882         if (spec) {
1883                 if (!mask)
1884                         mask = default_mask;
1885                 memcpy(&id.vni[1], spec->vni, 3);
1886                 vxlan.val.tunnel_id = id.vlan_id;
1887                 memcpy(&id.vni[1], mask->vni, 3);
1888                 vxlan.mask.tunnel_id = id.vlan_id;
1889                 if (spec->protocol)
1890                         return rte_flow_error_set(data->error, EINVAL,
1891                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1892                                                   item,
1893                                                   "VxLAN-GPE protocol not"
1894                                                   " supported");
1895                 /* Remove unwanted bits from values. */
1896                 vxlan.val.tunnel_id &= vxlan.mask.tunnel_id;
1897         }
1898         /*
1899          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1900          * layer is defined in the Verbs specification it is interpreted as
1901          * wildcard and all packets will match this rule, if it follows a full
1902          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1903          * before will also match this rule.
1904          * To avoid such situation, VNI 0 is currently refused.
1905          */
1906         /* Only allow tunnel w/o tunnel id pattern after proper outer spec. */
1907         if (parser->out_layer == HASH_RXQ_ETH && !vxlan.val.tunnel_id)
1908                 return rte_flow_error_set(data->error, EINVAL,
1909                                           RTE_FLOW_ERROR_TYPE_ITEM,
1910                                           item,
1911                                           "VxLAN-GPE vni cannot be 0");
1912         mlx5_flow_create_copy(parser, &vxlan, size);
1913         return 0;
1914 }
1915
1916 /**
1917  * Convert GRE item to Verbs specification.
1918  *
1919  * @param item[in]
1920  *   Item specification.
1921  * @param default_mask[in]
1922  *   Default bit-masks to use when item->mask is not provided.
1923  * @param data[in, out]
1924  *   User structure.
1925  *
1926  * @return
1927  *   0 on success, a negative errno value otherwise and rte_errno is set.
1928  */
1929 static int
1930 mlx5_flow_create_gre(const struct rte_flow_item *item,
1931                      const void *default_mask,
1932                      struct mlx5_flow_data *data)
1933 {
1934         struct mlx5_flow_parse *parser = data->parser;
1935 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1936         (void)default_mask;
1937         unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
1938         struct ibv_flow_spec_tunnel tunnel = {
1939                 .type = parser->inner | IBV_FLOW_SPEC_VXLAN_TUNNEL,
1940                 .size = size,
1941         };
1942 #else
1943         const struct rte_flow_item_gre *spec = item->spec;
1944         const struct rte_flow_item_gre *mask = item->mask;
1945         unsigned int size = sizeof(struct ibv_flow_spec_gre);
1946         struct ibv_flow_spec_gre tunnel = {
1947                 .type = parser->inner | IBV_FLOW_SPEC_GRE,
1948                 .size = size,
1949         };
1950 #endif
1951         struct ibv_flow_spec_ipv4_ext *ipv4;
1952         struct ibv_flow_spec_ipv6 *ipv6;
1953         unsigned int i;
1954
1955         parser->inner = IBV_FLOW_SPEC_INNER;
1956         parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_GRE)];
1957         parser->out_layer = parser->layer;
1958         parser->layer = HASH_RXQ_TUNNEL;
1959         /* Default GRE to inner RSS. */
1960         if (!parser->rss_conf.level)
1961                 parser->rss_conf.level = 2;
1962 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1963         if (spec) {
1964                 if (!mask)
1965                         mask = default_mask;
1966                 tunnel.val.c_ks_res0_ver = spec->c_rsvd0_ver;
1967                 tunnel.val.protocol = spec->protocol;
1968                 tunnel.mask.c_ks_res0_ver = mask->c_rsvd0_ver;
1969                 tunnel.mask.protocol = mask->protocol;
1970                 /* Remove unwanted bits from values. */
1971                 tunnel.val.c_ks_res0_ver &= tunnel.mask.c_ks_res0_ver;
1972                 tunnel.val.protocol &= tunnel.mask.protocol;
1973                 tunnel.val.key &= tunnel.mask.key;
1974         }
1975 #endif
1976         /* Update encapsulation IP layer protocol. */
1977         for (i = 0; i != hash_rxq_init_n; ++i) {
1978                 if (!parser->queue[i].ibv_attr)
1979                         continue;
1980                 if (parser->out_layer == HASH_RXQ_IPV4) {
1981                         ipv4 = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1982                                 parser->queue[i].offset -
1983                                 sizeof(struct ibv_flow_spec_ipv4_ext));
1984                         if (ipv4->mask.proto && ipv4->val.proto != MLX5_GRE)
1985                                 break;
1986                         ipv4->val.proto = MLX5_GRE;
1987                         ipv4->mask.proto = 0xff;
1988                 } else if (parser->out_layer == HASH_RXQ_IPV6) {
1989                         ipv6 = (void *)((uintptr_t)parser->queue[i].ibv_attr +
1990                                 parser->queue[i].offset -
1991                                 sizeof(struct ibv_flow_spec_ipv6));
1992                         if (ipv6->mask.next_hdr &&
1993                             ipv6->val.next_hdr != MLX5_GRE)
1994                                 break;
1995                         ipv6->val.next_hdr = MLX5_GRE;
1996                         ipv6->mask.next_hdr = 0xff;
1997                 }
1998         }
1999         if (i != hash_rxq_init_n)
2000                 return rte_flow_error_set(data->error, EINVAL,
2001                                           RTE_FLOW_ERROR_TYPE_ITEM,
2002                                           item,
2003                                           "IP protocol of GRE must be 47");
2004         mlx5_flow_create_copy(parser, &tunnel, size);
2005         return 0;
2006 }
2007
2008 /**
2009  * Convert MPLS item to Verbs specification.
2010  * MPLS tunnel types currently supported are MPLS-in-GRE and MPLS-in-UDP.
2011  *
2012  * @param item[in]
2013  *   Item specification.
2014  * @param default_mask[in]
2015  *   Default bit-masks to use when item->mask is not provided.
2016  * @param data[in, out]
2017  *   User structure.
2018  *
2019  * @return
2020  *   0 on success, a negative errno value otherwise and rte_errno is set.
2021  */
2022 static int
2023 mlx5_flow_create_mpls(const struct rte_flow_item *item,
2024                       const void *default_mask,
2025                       struct mlx5_flow_data *data)
2026 {
2027 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2028         (void)default_mask;
2029         return rte_flow_error_set(data->error, ENOTSUP,
2030                                   RTE_FLOW_ERROR_TYPE_ITEM,
2031                                   item,
2032                                   "MPLS is not supported by driver");
2033 #else
2034         const struct rte_flow_item_mpls *spec = item->spec;
2035         const struct rte_flow_item_mpls *mask = item->mask;
2036         struct mlx5_flow_parse *parser = data->parser;
2037         unsigned int size = sizeof(struct ibv_flow_spec_mpls);
2038         struct ibv_flow_spec_mpls mpls = {
2039                 .type = IBV_FLOW_SPEC_MPLS,
2040                 .size = size,
2041         };
2042
2043         parser->inner = IBV_FLOW_SPEC_INNER;
2044         if (parser->layer == HASH_RXQ_UDPV4 ||
2045             parser->layer == HASH_RXQ_UDPV6) {
2046                 parser->tunnel =
2047                         ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_MPLS_IN_UDP)];
2048                 parser->out_layer = parser->layer;
2049         } else {
2050                 parser->tunnel =
2051                         ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_MPLS_IN_GRE)];
2052                 /* parser->out_layer stays as in GRE out_layer. */
2053         }
2054         parser->layer = HASH_RXQ_TUNNEL;
2055         /*
2056          * For MPLS-in-GRE, RSS level should have been set.
2057          * For MPLS-in-UDP, use outer RSS.
2058          */
2059         if (!parser->rss_conf.level)
2060                 parser->rss_conf.level = 1;
2061         if (spec) {
2062                 if (!mask)
2063                         mask = default_mask;
2064                 /*
2065                  * The verbs label field includes the entire MPLS header:
2066                  * bits 0:19 - label value field.
2067                  * bits 20:22 - traffic class field.
2068                  * bits 23 - bottom of stack bit.
2069                  * bits 24:31 - ttl field.
2070                  */
2071                 mpls.val.label = *(const uint32_t *)spec;
2072                 mpls.mask.label = *(const uint32_t *)mask;
2073                 /* Remove unwanted bits from values. */
2074                 mpls.val.label &= mpls.mask.label;
2075         }
2076         mlx5_flow_create_copy(parser, &mpls, size);
2077         return 0;
2078 #endif
2079 }
2080
2081 /**
2082  * Convert mark/flag action to Verbs specification.
2083  *
2084  * @param parser
2085  *   Internal parser structure.
2086  * @param mark_id
2087  *   Mark identifier.
2088  *
2089  * @return
2090  *   0 on success, a negative errno value otherwise and rte_errno is set.
2091  */
2092 static int
2093 mlx5_flow_create_flag_mark(struct mlx5_flow_parse *parser, uint32_t mark_id)
2094 {
2095         unsigned int size = sizeof(struct ibv_flow_spec_action_tag);
2096         struct ibv_flow_spec_action_tag tag = {
2097                 .type = IBV_FLOW_SPEC_ACTION_TAG,
2098                 .size = size,
2099                 .tag_id = mlx5_flow_mark_set(mark_id),
2100         };
2101
2102         assert(parser->mark);
2103         mlx5_flow_create_copy(parser, &tag, size);
2104         return 0;
2105 }
2106
2107 /**
2108  * Convert count action to Verbs specification.
2109  *
2110  * @param dev
2111  *   Pointer to Ethernet device.
2112  * @param parser
2113  *   Pointer to MLX5 flow parser structure.
2114  *
2115  * @return
2116  *   0 on success, a negative errno value otherwise and rte_errno is set.
2117  */
2118 static int
2119 mlx5_flow_create_count(struct rte_eth_dev *dev __rte_unused,
2120                        struct mlx5_flow_parse *parser __rte_unused)
2121 {
2122 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
2123         struct priv *priv = dev->data->dev_private;
2124         unsigned int size = sizeof(struct ibv_flow_spec_counter_action);
2125         struct ibv_counter_set_init_attr init_attr = {0};
2126         struct ibv_flow_spec_counter_action counter = {
2127                 .type = IBV_FLOW_SPEC_ACTION_COUNT,
2128                 .size = size,
2129                 .counter_set_handle = 0,
2130         };
2131
2132         init_attr.counter_set_id = 0;
2133         parser->cs = mlx5_glue->create_counter_set(priv->ctx, &init_attr);
2134         if (!parser->cs) {
2135                 rte_errno = EINVAL;
2136                 return -rte_errno;
2137         }
2138         counter.counter_set_handle = parser->cs->handle;
2139         mlx5_flow_create_copy(parser, &counter, size);
2140 #endif
2141         return 0;
2142 }
2143
2144 /**
2145  * Complete flow rule creation with a drop queue.
2146  *
2147  * @param dev
2148  *   Pointer to Ethernet device.
2149  * @param parser
2150  *   Internal parser structure.
2151  * @param flow
2152  *   Pointer to the rte_flow.
2153  * @param[out] error
2154  *   Perform verbose error reporting if not NULL.
2155  *
2156  * @return
2157  *   0 on success, a negative errno value otherwise and rte_errno is set.
2158  */
2159 static int
2160 mlx5_flow_create_action_queue_drop(struct rte_eth_dev *dev,
2161                                    struct mlx5_flow_parse *parser,
2162                                    struct rte_flow *flow,
2163                                    struct rte_flow_error *error)
2164 {
2165         struct priv *priv = dev->data->dev_private;
2166         struct ibv_flow_spec_action_drop *drop;
2167         unsigned int size = sizeof(struct ibv_flow_spec_action_drop);
2168
2169         assert(priv->pd);
2170         assert(priv->ctx);
2171         flow->drop = 1;
2172         drop = (void *)((uintptr_t)parser->queue[HASH_RXQ_ETH].ibv_attr +
2173                         parser->queue[HASH_RXQ_ETH].offset);
2174         *drop = (struct ibv_flow_spec_action_drop){
2175                         .type = IBV_FLOW_SPEC_ACTION_DROP,
2176                         .size = size,
2177         };
2178         ++parser->queue[HASH_RXQ_ETH].ibv_attr->num_of_specs;
2179         parser->queue[HASH_RXQ_ETH].offset += size;
2180         flow->frxq[HASH_RXQ_ETH].ibv_attr =
2181                 parser->queue[HASH_RXQ_ETH].ibv_attr;
2182         if (parser->count)
2183                 flow->cs = parser->cs;
2184         if (!dev->data->dev_started)
2185                 return 0;
2186         parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
2187         flow->frxq[HASH_RXQ_ETH].ibv_flow =
2188                 mlx5_glue->create_flow(priv->flow_drop_queue->qp,
2189                                        flow->frxq[HASH_RXQ_ETH].ibv_attr);
2190         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2191                 rte_flow_error_set(error, ENOMEM, RTE_FLOW_ERROR_TYPE_HANDLE,
2192                                    NULL, "flow rule creation failure");
2193                 goto error;
2194         }
2195         return 0;
2196 error:
2197         assert(flow);
2198         if (flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2199                 claim_zero(mlx5_glue->destroy_flow
2200                            (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2201                 flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
2202         }
2203         if (flow->frxq[HASH_RXQ_ETH].ibv_attr) {
2204                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
2205                 flow->frxq[HASH_RXQ_ETH].ibv_attr = NULL;
2206         }
2207         if (flow->cs) {
2208                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2209                 flow->cs = NULL;
2210                 parser->cs = NULL;
2211         }
2212         return -rte_errno;
2213 }
2214
2215 /**
2216  * Create hash Rx queues when RSS is enabled.
2217  *
2218  * @param dev
2219  *   Pointer to Ethernet device.
2220  * @param parser
2221  *   Internal parser structure.
2222  * @param flow
2223  *   Pointer to the rte_flow.
2224  * @param[out] error
2225  *   Perform verbose error reporting if not NULL.
2226  *
2227  * @return
2228  *   0 on success, a negative errno value otherwise and rte_errno is set.
2229  */
2230 static int
2231 mlx5_flow_create_action_queue_rss(struct rte_eth_dev *dev,
2232                                   struct mlx5_flow_parse *parser,
2233                                   struct rte_flow *flow,
2234                                   struct rte_flow_error *error)
2235 {
2236         unsigned int i;
2237
2238         for (i = 0; i != hash_rxq_init_n; ++i) {
2239                 if (!parser->queue[i].ibv_attr)
2240                         continue;
2241                 flow->frxq[i].ibv_attr = parser->queue[i].ibv_attr;
2242                 parser->queue[i].ibv_attr = NULL;
2243                 flow->frxq[i].hash_fields = parser->queue[i].hash_fields;
2244                 if (!dev->data->dev_started)
2245                         continue;
2246                 flow->frxq[i].hrxq =
2247                         mlx5_hrxq_get(dev,
2248                                       parser->rss_conf.key,
2249                                       parser->rss_conf.key_len,
2250                                       flow->frxq[i].hash_fields,
2251                                       parser->rss_conf.queue,
2252                                       parser->rss_conf.queue_num,
2253                                       parser->tunnel,
2254                                       parser->rss_conf.level);
2255                 if (flow->frxq[i].hrxq)
2256                         continue;
2257                 flow->frxq[i].hrxq =
2258                         mlx5_hrxq_new(dev,
2259                                       parser->rss_conf.key,
2260                                       parser->rss_conf.key_len,
2261                                       flow->frxq[i].hash_fields,
2262                                       parser->rss_conf.queue,
2263                                       parser->rss_conf.queue_num,
2264                                       parser->tunnel,
2265                                       parser->rss_conf.level);
2266                 if (!flow->frxq[i].hrxq) {
2267                         return rte_flow_error_set(error, ENOMEM,
2268                                                   RTE_FLOW_ERROR_TYPE_HANDLE,
2269                                                   NULL,
2270                                                   "cannot create hash rxq");
2271                 }
2272         }
2273         return 0;
2274 }
2275
2276 /**
2277  * RXQ update after flow rule creation.
2278  *
2279  * @param dev
2280  *   Pointer to Ethernet device.
2281  * @param flow
2282  *   Pointer to the flow rule.
2283  */
2284 static void
2285 mlx5_flow_create_update_rxqs(struct rte_eth_dev *dev, struct rte_flow *flow)
2286 {
2287         struct priv *priv = dev->data->dev_private;
2288         unsigned int i;
2289         unsigned int j;
2290
2291         if (!dev->data->dev_started)
2292                 return;
2293         for (i = 0; i != flow->rss_conf.queue_num; ++i) {
2294                 struct mlx5_rxq_data *rxq_data = (*priv->rxqs)
2295                                                  [(*flow->queues)[i]];
2296                 struct mlx5_rxq_ctrl *rxq_ctrl =
2297                         container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
2298                 uint8_t tunnel = PTYPE_IDX(flow->tunnel);
2299
2300                 rxq_data->mark |= flow->mark;
2301                 if (!tunnel)
2302                         continue;
2303                 rxq_ctrl->tunnel_types[tunnel] += 1;
2304                 /* Clear tunnel type if more than one tunnel types set. */
2305                 for (j = 0; j != RTE_DIM(rxq_ctrl->tunnel_types); ++j) {
2306                         if (j == tunnel)
2307                                 continue;
2308                         if (rxq_ctrl->tunnel_types[j] > 0) {
2309                                 rxq_data->tunnel = 0;
2310                                 break;
2311                         }
2312                 }
2313                 if (j == RTE_DIM(rxq_ctrl->tunnel_types))
2314                         rxq_data->tunnel = flow->tunnel;
2315         }
2316 }
2317
2318 /**
2319  * Dump flow hash RX queue detail.
2320  *
2321  * @param dev
2322  *   Pointer to Ethernet device.
2323  * @param flow
2324  *   Pointer to the rte_flow.
2325  * @param hrxq_idx
2326  *   Hash RX queue index.
2327  */
2328 static void
2329 mlx5_flow_dump(struct rte_eth_dev *dev __rte_unused,
2330                struct rte_flow *flow __rte_unused,
2331                unsigned int hrxq_idx __rte_unused)
2332 {
2333 #ifndef NDEBUG
2334         uintptr_t spec_ptr;
2335         uint16_t j;
2336         char buf[256];
2337         uint8_t off;
2338
2339         spec_ptr = (uintptr_t)(flow->frxq[hrxq_idx].ibv_attr + 1);
2340         for (j = 0, off = 0; j < flow->frxq[hrxq_idx].ibv_attr->num_of_specs;
2341              j++) {
2342                 struct ibv_flow_spec *spec = (void *)spec_ptr;
2343                 off += sprintf(buf + off, " %x(%hu)", spec->hdr.type,
2344                                spec->hdr.size);
2345                 spec_ptr += spec->hdr.size;
2346         }
2347         DRV_LOG(DEBUG,
2348                 "port %u Verbs flow %p type %u: hrxq:%p qp:%p ind:%p,"
2349                 " hash:%" PRIx64 "/%u specs:%hhu(%hu), priority:%hu, type:%d,"
2350                 " flags:%x, comp_mask:%x specs:%s",
2351                 dev->data->port_id, (void *)flow, hrxq_idx,
2352                 (void *)flow->frxq[hrxq_idx].hrxq,
2353                 (void *)flow->frxq[hrxq_idx].hrxq->qp,
2354                 (void *)flow->frxq[hrxq_idx].hrxq->ind_table,
2355                 flow->frxq[hrxq_idx].hash_fields |
2356                 (flow->tunnel &&
2357                  flow->rss_conf.level > 1 ? (uint32_t)IBV_RX_HASH_INNER : 0),
2358                 flow->rss_conf.queue_num,
2359                 flow->frxq[hrxq_idx].ibv_attr->num_of_specs,
2360                 flow->frxq[hrxq_idx].ibv_attr->size,
2361                 flow->frxq[hrxq_idx].ibv_attr->priority,
2362                 flow->frxq[hrxq_idx].ibv_attr->type,
2363                 flow->frxq[hrxq_idx].ibv_attr->flags,
2364                 flow->frxq[hrxq_idx].ibv_attr->comp_mask,
2365                 buf);
2366 #endif
2367 }
2368
2369 /**
2370  * Complete flow rule creation.
2371  *
2372  * @param dev
2373  *   Pointer to Ethernet device.
2374  * @param parser
2375  *   Internal parser structure.
2376  * @param flow
2377  *   Pointer to the rte_flow.
2378  * @param[out] error
2379  *   Perform verbose error reporting if not NULL.
2380  *
2381  * @return
2382  *   0 on success, a negative errno value otherwise and rte_errno is set.
2383  */
2384 static int
2385 mlx5_flow_create_action_queue(struct rte_eth_dev *dev,
2386                               struct mlx5_flow_parse *parser,
2387                               struct rte_flow *flow,
2388                               struct rte_flow_error *error)
2389 {
2390         struct priv *priv __rte_unused = dev->data->dev_private;
2391         int ret;
2392         unsigned int i;
2393         unsigned int flows_n = 0;
2394
2395         assert(priv->pd);
2396         assert(priv->ctx);
2397         assert(!parser->drop);
2398         ret = mlx5_flow_create_action_queue_rss(dev, parser, flow, error);
2399         if (ret)
2400                 goto error;
2401         if (parser->count)
2402                 flow->cs = parser->cs;
2403         if (!dev->data->dev_started)
2404                 return 0;
2405         for (i = 0; i != hash_rxq_init_n; ++i) {
2406                 if (!flow->frxq[i].hrxq)
2407                         continue;
2408                 flow->frxq[i].ibv_flow =
2409                         mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
2410                                                flow->frxq[i].ibv_attr);
2411                 mlx5_flow_dump(dev, flow, i);
2412                 if (!flow->frxq[i].ibv_flow) {
2413                         rte_flow_error_set(error, ENOMEM,
2414                                            RTE_FLOW_ERROR_TYPE_HANDLE,
2415                                            NULL, "flow rule creation failure");
2416                         goto error;
2417                 }
2418                 ++flows_n;
2419         }
2420         if (!flows_n) {
2421                 rte_flow_error_set(error, EINVAL, RTE_FLOW_ERROR_TYPE_HANDLE,
2422                                    NULL, "internal error in flow creation");
2423                 goto error;
2424         }
2425         mlx5_flow_create_update_rxqs(dev, flow);
2426         return 0;
2427 error:
2428         ret = rte_errno; /* Save rte_errno before cleanup. */
2429         assert(flow);
2430         for (i = 0; i != hash_rxq_init_n; ++i) {
2431                 if (flow->frxq[i].ibv_flow) {
2432                         struct ibv_flow *ibv_flow = flow->frxq[i].ibv_flow;
2433
2434                         claim_zero(mlx5_glue->destroy_flow(ibv_flow));
2435                 }
2436                 if (flow->frxq[i].hrxq)
2437                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
2438                 if (flow->frxq[i].ibv_attr)
2439                         rte_free(flow->frxq[i].ibv_attr);
2440         }
2441         if (flow->cs) {
2442                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2443                 flow->cs = NULL;
2444                 parser->cs = NULL;
2445         }
2446         rte_errno = ret; /* Restore rte_errno. */
2447         return -rte_errno;
2448 }
2449
2450 /**
2451  * Convert a flow.
2452  *
2453  * @param dev
2454  *   Pointer to Ethernet device.
2455  * @param list
2456  *   Pointer to a TAILQ flow list.
2457  * @param[in] attr
2458  *   Flow rule attributes.
2459  * @param[in] pattern
2460  *   Pattern specification (list terminated by the END pattern item).
2461  * @param[in] actions
2462  *   Associated actions (list terminated by the END action).
2463  * @param[out] error
2464  *   Perform verbose error reporting if not NULL.
2465  *
2466  * @return
2467  *   A flow on success, NULL otherwise and rte_errno is set.
2468  */
2469 static struct rte_flow *
2470 mlx5_flow_list_create(struct rte_eth_dev *dev,
2471                       struct mlx5_flows *list,
2472                       const struct rte_flow_attr *attr,
2473                       const struct rte_flow_item items[],
2474                       const struct rte_flow_action actions[],
2475                       struct rte_flow_error *error)
2476 {
2477         struct mlx5_flow_parse parser = { .create = 1, };
2478         struct rte_flow *flow = NULL;
2479         unsigned int i;
2480         int ret;
2481
2482         ret = mlx5_flow_convert(dev, attr, items, actions, error, &parser);
2483         if (ret)
2484                 goto exit;
2485         flow = rte_calloc(__func__, 1,
2486                           sizeof(*flow) +
2487                           parser.rss_conf.queue_num * sizeof(uint16_t),
2488                           0);
2489         if (!flow) {
2490                 rte_flow_error_set(error, ENOMEM,
2491                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2492                                    NULL,
2493                                    "cannot allocate flow memory");
2494                 return NULL;
2495         }
2496         /* Copy configuration. */
2497         flow->queues = (uint16_t (*)[])(flow + 1);
2498         flow->tunnel = parser.tunnel;
2499         flow->rss_conf = (struct rte_flow_action_rss){
2500                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2501                 .level = 0,
2502                 .types = parser.rss_conf.types,
2503                 .key_len = parser.rss_conf.key_len,
2504                 .queue_num = parser.rss_conf.queue_num,
2505                 .key = memcpy(flow->rss_key, parser.rss_conf.key,
2506                               sizeof(*parser.rss_conf.key) *
2507                               parser.rss_conf.key_len),
2508                 .queue = memcpy(flow->queues, parser.rss_conf.queue,
2509                                 sizeof(*parser.rss_conf.queue) *
2510                                 parser.rss_conf.queue_num),
2511         };
2512         flow->mark = parser.mark;
2513         /* finalise the flow. */
2514         if (parser.drop)
2515                 ret = mlx5_flow_create_action_queue_drop(dev, &parser, flow,
2516                                                          error);
2517         else
2518                 ret = mlx5_flow_create_action_queue(dev, &parser, flow, error);
2519         if (ret)
2520                 goto exit;
2521         TAILQ_INSERT_TAIL(list, flow, next);
2522         DRV_LOG(DEBUG, "port %u flow created %p", dev->data->port_id,
2523                 (void *)flow);
2524         return flow;
2525 exit:
2526         DRV_LOG(ERR, "port %u flow creation error: %s", dev->data->port_id,
2527                 error->message);
2528         for (i = 0; i != hash_rxq_init_n; ++i) {
2529                 if (parser.queue[i].ibv_attr)
2530                         rte_free(parser.queue[i].ibv_attr);
2531         }
2532         rte_free(flow);
2533         return NULL;
2534 }
2535
2536 /**
2537  * Validate a flow supported by the NIC.
2538  *
2539  * @see rte_flow_validate()
2540  * @see rte_flow_ops
2541  */
2542 int
2543 mlx5_flow_validate(struct rte_eth_dev *dev,
2544                    const struct rte_flow_attr *attr,
2545                    const struct rte_flow_item items[],
2546                    const struct rte_flow_action actions[],
2547                    struct rte_flow_error *error)
2548 {
2549         struct mlx5_flow_parse parser = { .create = 0, };
2550
2551         return mlx5_flow_convert(dev, attr, items, actions, error, &parser);
2552 }
2553
2554 /**
2555  * Create a flow.
2556  *
2557  * @see rte_flow_create()
2558  * @see rte_flow_ops
2559  */
2560 struct rte_flow *
2561 mlx5_flow_create(struct rte_eth_dev *dev,
2562                  const struct rte_flow_attr *attr,
2563                  const struct rte_flow_item items[],
2564                  const struct rte_flow_action actions[],
2565                  struct rte_flow_error *error)
2566 {
2567         struct priv *priv = dev->data->dev_private;
2568
2569         return mlx5_flow_list_create(dev, &priv->flows, attr, items, actions,
2570                                      error);
2571 }
2572
2573 /**
2574  * Destroy a flow in a list.
2575  *
2576  * @param dev
2577  *   Pointer to Ethernet device.
2578  * @param list
2579  *   Pointer to a TAILQ flow list.
2580  * @param[in] flow
2581  *   Flow to destroy.
2582  */
2583 static void
2584 mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2585                        struct rte_flow *flow)
2586 {
2587         struct priv *priv = dev->data->dev_private;
2588         unsigned int i;
2589
2590         if (flow->drop || !dev->data->dev_started)
2591                 goto free;
2592         for (i = 0; flow->tunnel && i != flow->rss_conf.queue_num; ++i) {
2593                 /* Update queue tunnel type. */
2594                 struct mlx5_rxq_data *rxq_data = (*priv->rxqs)
2595                                                  [(*flow->queues)[i]];
2596                 struct mlx5_rxq_ctrl *rxq_ctrl =
2597                         container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
2598                 uint8_t tunnel = PTYPE_IDX(flow->tunnel);
2599
2600                 assert(rxq_ctrl->tunnel_types[tunnel] > 0);
2601                 rxq_ctrl->tunnel_types[tunnel] -= 1;
2602                 if (!rxq_ctrl->tunnel_types[tunnel]) {
2603                         /* Update tunnel type. */
2604                         uint8_t j;
2605                         uint8_t types = 0;
2606                         uint8_t last;
2607
2608                         for (j = 0; j < RTE_DIM(rxq_ctrl->tunnel_types); j++)
2609                                 if (rxq_ctrl->tunnel_types[j]) {
2610                                         types += 1;
2611                                         last = j;
2612                                 }
2613                         /* Keep same if more than one tunnel types left. */
2614                         if (types == 1)
2615                                 rxq_data->tunnel = ptype_ext[last];
2616                         else if (types == 0)
2617                                 /* No tunnel type left. */
2618                                 rxq_data->tunnel = 0;
2619                 }
2620         }
2621         for (i = 0; flow->mark && i != flow->rss_conf.queue_num; ++i) {
2622                 struct rte_flow *tmp;
2623                 int mark = 0;
2624
2625                 /*
2626                  * To remove the mark from the queue, the queue must not be
2627                  * present in any other marked flow (RSS or not).
2628                  */
2629                 TAILQ_FOREACH(tmp, list, next) {
2630                         unsigned int j;
2631                         uint16_t *tqs = NULL;
2632                         uint16_t tq_n = 0;
2633
2634                         if (!tmp->mark)
2635                                 continue;
2636                         for (j = 0; j != hash_rxq_init_n; ++j) {
2637                                 if (!tmp->frxq[j].hrxq)
2638                                         continue;
2639                                 tqs = tmp->frxq[j].hrxq->ind_table->queues;
2640                                 tq_n = tmp->frxq[j].hrxq->ind_table->queues_n;
2641                         }
2642                         if (!tq_n)
2643                                 continue;
2644                         for (j = 0; (j != tq_n) && !mark; j++)
2645                                 if (tqs[j] == (*flow->queues)[i])
2646                                         mark = 1;
2647                 }
2648                 (*priv->rxqs)[(*flow->queues)[i]]->mark = mark;
2649         }
2650 free:
2651         if (flow->drop) {
2652                 if (flow->frxq[HASH_RXQ_ETH].ibv_flow)
2653                         claim_zero(mlx5_glue->destroy_flow
2654                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2655                 rte_free(flow->frxq[HASH_RXQ_ETH].ibv_attr);
2656         } else {
2657                 for (i = 0; i != hash_rxq_init_n; ++i) {
2658                         struct mlx5_flow *frxq = &flow->frxq[i];
2659
2660                         if (frxq->ibv_flow)
2661                                 claim_zero(mlx5_glue->destroy_flow
2662                                            (frxq->ibv_flow));
2663                         if (frxq->hrxq)
2664                                 mlx5_hrxq_release(dev, frxq->hrxq);
2665                         if (frxq->ibv_attr)
2666                                 rte_free(frxq->ibv_attr);
2667                 }
2668         }
2669         if (flow->cs) {
2670                 claim_zero(mlx5_glue->destroy_counter_set(flow->cs));
2671                 flow->cs = NULL;
2672         }
2673         TAILQ_REMOVE(list, flow, next);
2674         DRV_LOG(DEBUG, "port %u flow destroyed %p", dev->data->port_id,
2675                 (void *)flow);
2676         rte_free(flow);
2677 }
2678
2679 /**
2680  * Destroy all flows.
2681  *
2682  * @param dev
2683  *   Pointer to Ethernet device.
2684  * @param list
2685  *   Pointer to a TAILQ flow list.
2686  */
2687 void
2688 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2689 {
2690         while (!TAILQ_EMPTY(list)) {
2691                 struct rte_flow *flow;
2692
2693                 flow = TAILQ_FIRST(list);
2694                 mlx5_flow_list_destroy(dev, list, flow);
2695         }
2696 }
2697
2698 /**
2699  * Create drop queue.
2700  *
2701  * @param dev
2702  *   Pointer to Ethernet device.
2703  *
2704  * @return
2705  *   0 on success, a negative errno value otherwise and rte_errno is set.
2706  */
2707 int
2708 mlx5_flow_create_drop_queue(struct rte_eth_dev *dev)
2709 {
2710         struct priv *priv = dev->data->dev_private;
2711         struct mlx5_hrxq_drop *fdq = NULL;
2712
2713         assert(priv->pd);
2714         assert(priv->ctx);
2715         fdq = rte_calloc(__func__, 1, sizeof(*fdq), 0);
2716         if (!fdq) {
2717                 DRV_LOG(WARNING,
2718                         "port %u cannot allocate memory for drop queue",
2719                         dev->data->port_id);
2720                 rte_errno = ENOMEM;
2721                 return -rte_errno;
2722         }
2723         fdq->cq = mlx5_glue->create_cq(priv->ctx, 1, NULL, NULL, 0);
2724         if (!fdq->cq) {
2725                 DRV_LOG(WARNING, "port %u cannot allocate CQ for drop queue",
2726                         dev->data->port_id);
2727                 rte_errno = errno;
2728                 goto error;
2729         }
2730         fdq->wq = mlx5_glue->create_wq
2731                 (priv->ctx,
2732                  &(struct ibv_wq_init_attr){
2733                         .wq_type = IBV_WQT_RQ,
2734                         .max_wr = 1,
2735                         .max_sge = 1,
2736                         .pd = priv->pd,
2737                         .cq = fdq->cq,
2738                  });
2739         if (!fdq->wq) {
2740                 DRV_LOG(WARNING, "port %u cannot allocate WQ for drop queue",
2741                         dev->data->port_id);
2742                 rte_errno = errno;
2743                 goto error;
2744         }
2745         fdq->ind_table = mlx5_glue->create_rwq_ind_table
2746                 (priv->ctx,
2747                  &(struct ibv_rwq_ind_table_init_attr){
2748                         .log_ind_tbl_size = 0,
2749                         .ind_tbl = &fdq->wq,
2750                         .comp_mask = 0,
2751                  });
2752         if (!fdq->ind_table) {
2753                 DRV_LOG(WARNING,
2754                         "port %u cannot allocate indirection table for drop"
2755                         " queue",
2756                         dev->data->port_id);
2757                 rte_errno = errno;
2758                 goto error;
2759         }
2760         fdq->qp = mlx5_glue->create_qp_ex
2761                 (priv->ctx,
2762                  &(struct ibv_qp_init_attr_ex){
2763                         .qp_type = IBV_QPT_RAW_PACKET,
2764                         .comp_mask =
2765                                 IBV_QP_INIT_ATTR_PD |
2766                                 IBV_QP_INIT_ATTR_IND_TABLE |
2767                                 IBV_QP_INIT_ATTR_RX_HASH,
2768                         .rx_hash_conf = (struct ibv_rx_hash_conf){
2769                                 .rx_hash_function =
2770                                         IBV_RX_HASH_FUNC_TOEPLITZ,
2771                                 .rx_hash_key_len = rss_hash_default_key_len,
2772                                 .rx_hash_key = rss_hash_default_key,
2773                                 .rx_hash_fields_mask = 0,
2774                                 },
2775                         .rwq_ind_tbl = fdq->ind_table,
2776                         .pd = priv->pd
2777                  });
2778         if (!fdq->qp) {
2779                 DRV_LOG(WARNING, "port %u cannot allocate QP for drop queue",
2780                         dev->data->port_id);
2781                 rte_errno = errno;
2782                 goto error;
2783         }
2784         priv->flow_drop_queue = fdq;
2785         return 0;
2786 error:
2787         if (fdq->qp)
2788                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2789         if (fdq->ind_table)
2790                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2791         if (fdq->wq)
2792                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2793         if (fdq->cq)
2794                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2795         if (fdq)
2796                 rte_free(fdq);
2797         priv->flow_drop_queue = NULL;
2798         return -rte_errno;
2799 }
2800
2801 /**
2802  * Delete drop queue.
2803  *
2804  * @param dev
2805  *   Pointer to Ethernet device.
2806  */
2807 void
2808 mlx5_flow_delete_drop_queue(struct rte_eth_dev *dev)
2809 {
2810         struct priv *priv = dev->data->dev_private;
2811         struct mlx5_hrxq_drop *fdq = priv->flow_drop_queue;
2812
2813         if (!fdq)
2814                 return;
2815         if (fdq->qp)
2816                 claim_zero(mlx5_glue->destroy_qp(fdq->qp));
2817         if (fdq->ind_table)
2818                 claim_zero(mlx5_glue->destroy_rwq_ind_table(fdq->ind_table));
2819         if (fdq->wq)
2820                 claim_zero(mlx5_glue->destroy_wq(fdq->wq));
2821         if (fdq->cq)
2822                 claim_zero(mlx5_glue->destroy_cq(fdq->cq));
2823         rte_free(fdq);
2824         priv->flow_drop_queue = NULL;
2825 }
2826
2827 /**
2828  * Remove all flows.
2829  *
2830  * @param dev
2831  *   Pointer to Ethernet device.
2832  * @param list
2833  *   Pointer to a TAILQ flow list.
2834  */
2835 void
2836 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2837 {
2838         struct priv *priv = dev->data->dev_private;
2839         struct rte_flow *flow;
2840         unsigned int i;
2841
2842         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
2843                 struct mlx5_ind_table_ibv *ind_tbl = NULL;
2844
2845                 if (flow->drop) {
2846                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow)
2847                                 continue;
2848                         claim_zero(mlx5_glue->destroy_flow
2849                                    (flow->frxq[HASH_RXQ_ETH].ibv_flow));
2850                         flow->frxq[HASH_RXQ_ETH].ibv_flow = NULL;
2851                         DRV_LOG(DEBUG, "port %u flow %p removed",
2852                                 dev->data->port_id, (void *)flow);
2853                         /* Next flow. */
2854                         continue;
2855                 }
2856                 /* Verify the flow has not already been cleaned. */
2857                 for (i = 0; i != hash_rxq_init_n; ++i) {
2858                         if (!flow->frxq[i].ibv_flow)
2859                                 continue;
2860                         /*
2861                          * Indirection table may be necessary to remove the
2862                          * flags in the Rx queues.
2863                          * This helps to speed-up the process by avoiding
2864                          * another loop.
2865                          */
2866                         ind_tbl = flow->frxq[i].hrxq->ind_table;
2867                         break;
2868                 }
2869                 if (i == hash_rxq_init_n)
2870                         return;
2871                 if (flow->mark) {
2872                         assert(ind_tbl);
2873                         for (i = 0; i != ind_tbl->queues_n; ++i)
2874                                 (*priv->rxqs)[ind_tbl->queues[i]]->mark = 0;
2875                 }
2876                 for (i = 0; i != hash_rxq_init_n; ++i) {
2877                         if (!flow->frxq[i].ibv_flow)
2878                                 continue;
2879                         claim_zero(mlx5_glue->destroy_flow
2880                                    (flow->frxq[i].ibv_flow));
2881                         flow->frxq[i].ibv_flow = NULL;
2882                         mlx5_hrxq_release(dev, flow->frxq[i].hrxq);
2883                         flow->frxq[i].hrxq = NULL;
2884                 }
2885                 DRV_LOG(DEBUG, "port %u flow %p removed", dev->data->port_id,
2886                         (void *)flow);
2887         }
2888         /* Cleanup Rx queue tunnel info. */
2889         for (i = 0; i != priv->rxqs_n; ++i) {
2890                 struct mlx5_rxq_data *q = (*priv->rxqs)[i];
2891                 struct mlx5_rxq_ctrl *rxq_ctrl =
2892                         container_of(q, struct mlx5_rxq_ctrl, rxq);
2893
2894                 if (!q)
2895                         continue;
2896                 memset((void *)rxq_ctrl->tunnel_types, 0,
2897                        sizeof(rxq_ctrl->tunnel_types));
2898                 q->tunnel = 0;
2899         }
2900 }
2901
2902 /**
2903  * Add all flows.
2904  *
2905  * @param dev
2906  *   Pointer to Ethernet device.
2907  * @param list
2908  *   Pointer to a TAILQ flow list.
2909  *
2910  * @return
2911  *   0 on success, a negative errno value otherwise and rte_errno is set.
2912  */
2913 int
2914 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2915 {
2916         struct priv *priv = dev->data->dev_private;
2917         struct rte_flow *flow;
2918
2919         TAILQ_FOREACH(flow, list, next) {
2920                 unsigned int i;
2921
2922                 if (flow->drop) {
2923                         flow->frxq[HASH_RXQ_ETH].ibv_flow =
2924                                 mlx5_glue->create_flow
2925                                 (priv->flow_drop_queue->qp,
2926                                  flow->frxq[HASH_RXQ_ETH].ibv_attr);
2927                         if (!flow->frxq[HASH_RXQ_ETH].ibv_flow) {
2928                                 DRV_LOG(DEBUG,
2929                                         "port %u flow %p cannot be applied",
2930                                         dev->data->port_id, (void *)flow);
2931                                 rte_errno = EINVAL;
2932                                 return -rte_errno;
2933                         }
2934                         DRV_LOG(DEBUG, "port %u flow %p applied",
2935                                 dev->data->port_id, (void *)flow);
2936                         /* Next flow. */
2937                         continue;
2938                 }
2939                 for (i = 0; i != hash_rxq_init_n; ++i) {
2940                         if (!flow->frxq[i].ibv_attr)
2941                                 continue;
2942                         flow->frxq[i].hrxq =
2943                                 mlx5_hrxq_get(dev, flow->rss_conf.key,
2944                                               flow->rss_conf.key_len,
2945                                               flow->frxq[i].hash_fields,
2946                                               flow->rss_conf.queue,
2947                                               flow->rss_conf.queue_num,
2948                                               flow->tunnel,
2949                                               flow->rss_conf.level);
2950                         if (flow->frxq[i].hrxq)
2951                                 goto flow_create;
2952                         flow->frxq[i].hrxq =
2953                                 mlx5_hrxq_new(dev, flow->rss_conf.key,
2954                                               flow->rss_conf.key_len,
2955                                               flow->frxq[i].hash_fields,
2956                                               flow->rss_conf.queue,
2957                                               flow->rss_conf.queue_num,
2958                                               flow->tunnel,
2959                                               flow->rss_conf.level);
2960                         if (!flow->frxq[i].hrxq) {
2961                                 DRV_LOG(DEBUG,
2962                                         "port %u flow %p cannot create hash"
2963                                         " rxq",
2964                                         dev->data->port_id, (void *)flow);
2965                                 rte_errno = EINVAL;
2966                                 return -rte_errno;
2967                         }
2968 flow_create:
2969                         mlx5_flow_dump(dev, flow, i);
2970                         flow->frxq[i].ibv_flow =
2971                                 mlx5_glue->create_flow(flow->frxq[i].hrxq->qp,
2972                                                        flow->frxq[i].ibv_attr);
2973                         if (!flow->frxq[i].ibv_flow) {
2974                                 DRV_LOG(DEBUG,
2975                                         "port %u flow %p type %u cannot be"
2976                                         " applied",
2977                                         dev->data->port_id, (void *)flow, i);
2978                                 rte_errno = EINVAL;
2979                                 return -rte_errno;
2980                         }
2981                 }
2982                 mlx5_flow_create_update_rxqs(dev, flow);
2983         }
2984         return 0;
2985 }
2986
2987 /**
2988  * Verify the flow list is empty
2989  *
2990  * @param dev
2991  *  Pointer to Ethernet device.
2992  *
2993  * @return the number of flows not released.
2994  */
2995 int
2996 mlx5_flow_verify(struct rte_eth_dev *dev)
2997 {
2998         struct priv *priv = dev->data->dev_private;
2999         struct rte_flow *flow;
3000         int ret = 0;
3001
3002         TAILQ_FOREACH(flow, &priv->flows, next) {
3003                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
3004                         dev->data->port_id, (void *)flow);
3005                 ++ret;
3006         }
3007         return ret;
3008 }
3009
3010 /**
3011  * Enable a control flow configured from the control plane.
3012  *
3013  * @param dev
3014  *   Pointer to Ethernet device.
3015  * @param eth_spec
3016  *   An Ethernet flow spec to apply.
3017  * @param eth_mask
3018  *   An Ethernet flow mask to apply.
3019  * @param vlan_spec
3020  *   A VLAN flow spec to apply.
3021  * @param vlan_mask
3022  *   A VLAN flow mask to apply.
3023  *
3024  * @return
3025  *   0 on success, a negative errno value otherwise and rte_errno is set.
3026  */
3027 int
3028 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
3029                     struct rte_flow_item_eth *eth_spec,
3030                     struct rte_flow_item_eth *eth_mask,
3031                     struct rte_flow_item_vlan *vlan_spec,
3032                     struct rte_flow_item_vlan *vlan_mask)
3033 {
3034         struct priv *priv = dev->data->dev_private;
3035         const struct rte_flow_attr attr = {
3036                 .ingress = 1,
3037                 .priority = MLX5_CTRL_FLOW_PRIORITY,
3038         };
3039         struct rte_flow_item items[] = {
3040                 {
3041                         .type = RTE_FLOW_ITEM_TYPE_ETH,
3042                         .spec = eth_spec,
3043                         .last = NULL,
3044                         .mask = eth_mask,
3045                 },
3046                 {
3047                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
3048                                 RTE_FLOW_ITEM_TYPE_END,
3049                         .spec = vlan_spec,
3050                         .last = NULL,
3051                         .mask = vlan_mask,
3052                 },
3053                 {
3054                         .type = RTE_FLOW_ITEM_TYPE_END,
3055                 },
3056         };
3057         uint16_t queue[priv->reta_idx_n];
3058         struct rte_flow_action_rss action_rss = {
3059                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
3060                 .level = 0,
3061                 .types = priv->rss_conf.rss_hf,
3062                 .key_len = priv->rss_conf.rss_key_len,
3063                 .queue_num = priv->reta_idx_n,
3064                 .key = priv->rss_conf.rss_key,
3065                 .queue = queue,
3066         };
3067         struct rte_flow_action actions[] = {
3068                 {
3069                         .type = RTE_FLOW_ACTION_TYPE_RSS,
3070                         .conf = &action_rss,
3071                 },
3072                 {
3073                         .type = RTE_FLOW_ACTION_TYPE_END,
3074                 },
3075         };
3076         struct rte_flow *flow;
3077         struct rte_flow_error error;
3078         unsigned int i;
3079
3080         if (!priv->reta_idx_n) {
3081                 rte_errno = EINVAL;
3082                 return -rte_errno;
3083         }
3084         for (i = 0; i != priv->reta_idx_n; ++i)
3085                 queue[i] = (*priv->reta_idx)[i];
3086         flow = mlx5_flow_list_create(dev, &priv->ctrl_flows, &attr, items,
3087                                      actions, &error);
3088         if (!flow)
3089                 return -rte_errno;
3090         return 0;
3091 }
3092
3093 /**
3094  * Enable a flow control configured from the control plane.
3095  *
3096  * @param dev
3097  *   Pointer to Ethernet device.
3098  * @param eth_spec
3099  *   An Ethernet flow spec to apply.
3100  * @param eth_mask
3101  *   An Ethernet flow mask to apply.
3102  *
3103  * @return
3104  *   0 on success, a negative errno value otherwise and rte_errno is set.
3105  */
3106 int
3107 mlx5_ctrl_flow(struct rte_eth_dev *dev,
3108                struct rte_flow_item_eth *eth_spec,
3109                struct rte_flow_item_eth *eth_mask)
3110 {
3111         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
3112 }
3113
3114 /**
3115  * Destroy a flow.
3116  *
3117  * @see rte_flow_destroy()
3118  * @see rte_flow_ops
3119  */
3120 int
3121 mlx5_flow_destroy(struct rte_eth_dev *dev,
3122                   struct rte_flow *flow,
3123                   struct rte_flow_error *error __rte_unused)
3124 {
3125         struct priv *priv = dev->data->dev_private;
3126
3127         mlx5_flow_list_destroy(dev, &priv->flows, flow);
3128         return 0;
3129 }
3130
3131 /**
3132  * Destroy all flows.
3133  *
3134  * @see rte_flow_flush()
3135  * @see rte_flow_ops
3136  */
3137 int
3138 mlx5_flow_flush(struct rte_eth_dev *dev,
3139                 struct rte_flow_error *error __rte_unused)
3140 {
3141         struct priv *priv = dev->data->dev_private;
3142
3143         mlx5_flow_list_flush(dev, &priv->flows);
3144         return 0;
3145 }
3146
3147 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
3148 /**
3149  * Query flow counter.
3150  *
3151  * @param cs
3152  *   the counter set.
3153  * @param counter_value
3154  *   returned data from the counter.
3155  *
3156  * @return
3157  *   0 on success, a negative errno value otherwise and rte_errno is set.
3158  */
3159 static int
3160 mlx5_flow_query_count(struct ibv_counter_set *cs,
3161                       struct mlx5_flow_counter_stats *counter_stats,
3162                       struct rte_flow_query_count *query_count,
3163                       struct rte_flow_error *error)
3164 {
3165         uint64_t counters[2];
3166         struct ibv_query_counter_set_attr query_cs_attr = {
3167                 .cs = cs,
3168                 .query_flags = IBV_COUNTER_SET_FORCE_UPDATE,
3169         };
3170         struct ibv_counter_set_data query_out = {
3171                 .out = counters,
3172                 .outlen = 2 * sizeof(uint64_t),
3173         };
3174         int err = mlx5_glue->query_counter_set(&query_cs_attr, &query_out);
3175
3176         if (err)
3177                 return rte_flow_error_set(error, err,
3178                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3179                                           NULL,
3180                                           "cannot read counter");
3181         query_count->hits_set = 1;
3182         query_count->bytes_set = 1;
3183         query_count->hits = counters[0] - counter_stats->hits;
3184         query_count->bytes = counters[1] - counter_stats->bytes;
3185         if (query_count->reset) {
3186                 counter_stats->hits = counters[0];
3187                 counter_stats->bytes = counters[1];
3188         }
3189         return 0;
3190 }
3191
3192 /**
3193  * Query a flows.
3194  *
3195  * @see rte_flow_query()
3196  * @see rte_flow_ops
3197  */
3198 int
3199 mlx5_flow_query(struct rte_eth_dev *dev __rte_unused,
3200                 struct rte_flow *flow,
3201                 const struct rte_flow_action *action __rte_unused,
3202                 void *data,
3203                 struct rte_flow_error *error)
3204 {
3205         if (flow->cs) {
3206                 int ret;
3207
3208                 ret = mlx5_flow_query_count(flow->cs,
3209                                             &flow->counter_stats,
3210                                             (struct rte_flow_query_count *)data,
3211                                             error);
3212                 if (ret)
3213                         return ret;
3214         } else {
3215                 return rte_flow_error_set(error, EINVAL,
3216                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3217                                           NULL,
3218                                           "no counter found for flow");
3219         }
3220         return 0;
3221 }
3222 #endif
3223
3224 /**
3225  * Isolated mode.
3226  *
3227  * @see rte_flow_isolate()
3228  * @see rte_flow_ops
3229  */
3230 int
3231 mlx5_flow_isolate(struct rte_eth_dev *dev,
3232                   int enable,
3233                   struct rte_flow_error *error)
3234 {
3235         struct priv *priv = dev->data->dev_private;
3236
3237         if (dev->data->dev_started) {
3238                 rte_flow_error_set(error, EBUSY,
3239                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3240                                    NULL,
3241                                    "port must be stopped first");
3242                 return -rte_errno;
3243         }
3244         priv->isolated = !!enable;
3245         if (enable)
3246                 dev->dev_ops = &mlx5_dev_ops_isolate;
3247         else
3248                 dev->dev_ops = &mlx5_dev_ops;
3249         return 0;
3250 }
3251
3252 /**
3253  * Convert a flow director filter to a generic flow.
3254  *
3255  * @param dev
3256  *   Pointer to Ethernet device.
3257  * @param fdir_filter
3258  *   Flow director filter to add.
3259  * @param attributes
3260  *   Generic flow parameters structure.
3261  *
3262  * @return
3263  *   0 on success, a negative errno value otherwise and rte_errno is set.
3264  */
3265 static int
3266 mlx5_fdir_filter_convert(struct rte_eth_dev *dev,
3267                          const struct rte_eth_fdir_filter *fdir_filter,
3268                          struct mlx5_fdir *attributes)
3269 {
3270         struct priv *priv = dev->data->dev_private;
3271         const struct rte_eth_fdir_input *input = &fdir_filter->input;
3272         const struct rte_eth_fdir_masks *mask =
3273                 &dev->data->dev_conf.fdir_conf.mask;
3274
3275         /* Validate queue number. */
3276         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
3277                 DRV_LOG(ERR, "port %u invalid queue number %d",
3278                         dev->data->port_id, fdir_filter->action.rx_queue);
3279                 rte_errno = EINVAL;
3280                 return -rte_errno;
3281         }
3282         attributes->attr.ingress = 1;
3283         attributes->items[0] = (struct rte_flow_item) {
3284                 .type = RTE_FLOW_ITEM_TYPE_ETH,
3285                 .spec = &attributes->l2,
3286                 .mask = &attributes->l2_mask,
3287         };
3288         switch (fdir_filter->action.behavior) {
3289         case RTE_ETH_FDIR_ACCEPT:
3290                 attributes->actions[0] = (struct rte_flow_action){
3291                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
3292                         .conf = &attributes->queue,
3293                 };
3294                 break;
3295         case RTE_ETH_FDIR_REJECT:
3296                 attributes->actions[0] = (struct rte_flow_action){
3297                         .type = RTE_FLOW_ACTION_TYPE_DROP,
3298                 };
3299                 break;
3300         default:
3301                 DRV_LOG(ERR, "port %u invalid behavior %d",
3302                         dev->data->port_id,
3303                         fdir_filter->action.behavior);
3304                 rte_errno = ENOTSUP;
3305                 return -rte_errno;
3306         }
3307         attributes->queue.index = fdir_filter->action.rx_queue;
3308         /* Handle L3. */
3309         switch (fdir_filter->input.flow_type) {
3310         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
3311         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
3312         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
3313                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
3314                         .src_addr = input->flow.ip4_flow.src_ip,
3315                         .dst_addr = input->flow.ip4_flow.dst_ip,
3316                         .time_to_live = input->flow.ip4_flow.ttl,
3317                         .type_of_service = input->flow.ip4_flow.tos,
3318                         .next_proto_id = input->flow.ip4_flow.proto,
3319                 };
3320                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
3321                         .src_addr = mask->ipv4_mask.src_ip,
3322                         .dst_addr = mask->ipv4_mask.dst_ip,
3323                         .time_to_live = mask->ipv4_mask.ttl,
3324                         .type_of_service = mask->ipv4_mask.tos,
3325                         .next_proto_id = mask->ipv4_mask.proto,
3326                 };
3327                 attributes->items[1] = (struct rte_flow_item){
3328                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
3329                         .spec = &attributes->l3,
3330                         .mask = &attributes->l3_mask,
3331                 };
3332                 break;
3333         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
3334         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
3335         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
3336                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
3337                         .hop_limits = input->flow.ipv6_flow.hop_limits,
3338                         .proto = input->flow.ipv6_flow.proto,
3339                 };
3340
3341                 memcpy(attributes->l3.ipv6.hdr.src_addr,
3342                        input->flow.ipv6_flow.src_ip,
3343                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
3344                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
3345                        input->flow.ipv6_flow.dst_ip,
3346                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
3347                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
3348                        mask->ipv6_mask.src_ip,
3349                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
3350                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
3351                        mask->ipv6_mask.dst_ip,
3352                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
3353                 attributes->items[1] = (struct rte_flow_item){
3354                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
3355                         .spec = &attributes->l3,
3356                         .mask = &attributes->l3_mask,
3357                 };
3358                 break;
3359         default:
3360                 DRV_LOG(ERR, "port %u invalid flow type%d",
3361                         dev->data->port_id, fdir_filter->input.flow_type);
3362                 rte_errno = ENOTSUP;
3363                 return -rte_errno;
3364         }
3365         /* Handle L4. */
3366         switch (fdir_filter->input.flow_type) {
3367         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
3368                 attributes->l4.udp.hdr = (struct udp_hdr){
3369                         .src_port = input->flow.udp4_flow.src_port,
3370                         .dst_port = input->flow.udp4_flow.dst_port,
3371                 };
3372                 attributes->l4_mask.udp.hdr = (struct udp_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_UDP,
3378                         .spec = &attributes->l4,
3379                         .mask = &attributes->l4_mask,
3380                 };
3381                 break;
3382         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
3383                 attributes->l4.tcp.hdr = (struct tcp_hdr){
3384                         .src_port = input->flow.tcp4_flow.src_port,
3385                         .dst_port = input->flow.tcp4_flow.dst_port,
3386                 };
3387                 attributes->l4_mask.tcp.hdr = (struct tcp_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_TCP,
3393                         .spec = &attributes->l4,
3394                         .mask = &attributes->l4_mask,
3395                 };
3396                 break;
3397         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
3398                 attributes->l4.udp.hdr = (struct udp_hdr){
3399                         .src_port = input->flow.udp6_flow.src_port,
3400                         .dst_port = input->flow.udp6_flow.dst_port,
3401                 };
3402                 attributes->l4_mask.udp.hdr = (struct udp_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_UDP,
3408                         .spec = &attributes->l4,
3409                         .mask = &attributes->l4_mask,
3410                 };
3411                 break;
3412         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
3413                 attributes->l4.tcp.hdr = (struct tcp_hdr){
3414                         .src_port = input->flow.tcp6_flow.src_port,
3415                         .dst_port = input->flow.tcp6_flow.dst_port,
3416                 };
3417                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
3418                         .src_port = mask->src_port_mask,
3419                         .dst_port = mask->dst_port_mask,
3420                 };
3421                 attributes->items[2] = (struct rte_flow_item){
3422                         .type = RTE_FLOW_ITEM_TYPE_TCP,
3423                         .spec = &attributes->l4,
3424                         .mask = &attributes->l4_mask,
3425                 };
3426                 break;
3427         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
3428         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
3429                 break;
3430         default:
3431                 DRV_LOG(ERR, "port %u invalid flow type%d",
3432                         dev->data->port_id, fdir_filter->input.flow_type);
3433                 rte_errno = ENOTSUP;
3434                 return -rte_errno;
3435         }
3436         return 0;
3437 }
3438
3439 /**
3440  * Add new flow director filter and store it in list.
3441  *
3442  * @param dev
3443  *   Pointer to Ethernet device.
3444  * @param fdir_filter
3445  *   Flow director filter to add.
3446  *
3447  * @return
3448  *   0 on success, a negative errno value otherwise and rte_errno is set.
3449  */
3450 static int
3451 mlx5_fdir_filter_add(struct rte_eth_dev *dev,
3452                      const struct rte_eth_fdir_filter *fdir_filter)
3453 {
3454         struct priv *priv = dev->data->dev_private;
3455         struct mlx5_fdir attributes = {
3456                 .attr.group = 0,
3457                 .l2_mask = {
3458                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
3459                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
3460                         .type = 0,
3461                 },
3462         };
3463         struct mlx5_flow_parse parser = {
3464                 .layer = HASH_RXQ_ETH,
3465         };
3466         struct rte_flow_error error;
3467         struct rte_flow *flow;
3468         int ret;
3469
3470         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
3471         if (ret)
3472                 return ret;
3473         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
3474                                 attributes.actions, &error, &parser);
3475         if (ret)
3476                 return ret;
3477         flow = mlx5_flow_list_create(dev, &priv->flows, &attributes.attr,
3478                                      attributes.items, attributes.actions,
3479                                      &error);
3480         if (flow) {
3481                 DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id,
3482                         (void *)flow);
3483                 return 0;
3484         }
3485         return -rte_errno;
3486 }
3487
3488 /**
3489  * Delete specific filter.
3490  *
3491  * @param dev
3492  *   Pointer to Ethernet device.
3493  * @param fdir_filter
3494  *   Filter to be deleted.
3495  *
3496  * @return
3497  *   0 on success, a negative errno value otherwise and rte_errno is set.
3498  */
3499 static int
3500 mlx5_fdir_filter_delete(struct rte_eth_dev *dev,
3501                         const struct rte_eth_fdir_filter *fdir_filter)
3502 {
3503         struct priv *priv = dev->data->dev_private;
3504         struct mlx5_fdir attributes = {
3505                 .attr.group = 0,
3506         };
3507         struct mlx5_flow_parse parser = {
3508                 .create = 1,
3509                 .layer = HASH_RXQ_ETH,
3510         };
3511         struct rte_flow_error error;
3512         struct rte_flow *flow;
3513         unsigned int i;
3514         int ret;
3515
3516         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
3517         if (ret)
3518                 return ret;
3519         ret = mlx5_flow_convert(dev, &attributes.attr, attributes.items,
3520                                 attributes.actions, &error, &parser);
3521         if (ret)
3522                 goto exit;
3523         /*
3524          * Special case for drop action which is only set in the
3525          * specifications when the flow is created.  In this situation the
3526          * drop specification is missing.
3527          */
3528         if (parser.drop) {
3529                 struct ibv_flow_spec_action_drop *drop;
3530
3531                 drop = (void *)((uintptr_t)parser.queue[HASH_RXQ_ETH].ibv_attr +
3532                                 parser.queue[HASH_RXQ_ETH].offset);
3533                 *drop = (struct ibv_flow_spec_action_drop){
3534                         .type = IBV_FLOW_SPEC_ACTION_DROP,
3535                         .size = sizeof(struct ibv_flow_spec_action_drop),
3536                 };
3537                 parser.queue[HASH_RXQ_ETH].ibv_attr->num_of_specs++;
3538         }
3539         TAILQ_FOREACH(flow, &priv->flows, next) {
3540                 struct ibv_flow_attr *attr;
3541                 struct ibv_spec_header *attr_h;
3542                 void *spec;
3543                 struct ibv_flow_attr *flow_attr;
3544                 struct ibv_spec_header *flow_h;
3545                 void *flow_spec;
3546                 unsigned int specs_n;
3547                 unsigned int queue_id = parser.drop ? HASH_RXQ_ETH :
3548                                                       parser.layer;
3549
3550                 attr = parser.queue[queue_id].ibv_attr;
3551                 flow_attr = flow->frxq[queue_id].ibv_attr;
3552                 /* Compare first the attributes. */
3553                 if (!flow_attr ||
3554                     memcmp(attr, flow_attr, sizeof(struct ibv_flow_attr)))
3555                         continue;
3556                 if (attr->num_of_specs == 0)
3557                         continue;
3558                 spec = (void *)((uintptr_t)attr +
3559                                 sizeof(struct ibv_flow_attr));
3560                 flow_spec = (void *)((uintptr_t)flow_attr +
3561                                      sizeof(struct ibv_flow_attr));
3562                 specs_n = RTE_MIN(attr->num_of_specs, flow_attr->num_of_specs);
3563                 for (i = 0; i != specs_n; ++i) {
3564                         attr_h = spec;
3565                         flow_h = flow_spec;
3566                         if (memcmp(spec, flow_spec,
3567                                    RTE_MIN(attr_h->size, flow_h->size)))
3568                                 goto wrong_flow;
3569                         spec = (void *)((uintptr_t)spec + attr_h->size);
3570                         flow_spec = (void *)((uintptr_t)flow_spec +
3571                                              flow_h->size);
3572                 }
3573                 /* At this point, the flow match. */
3574                 break;
3575 wrong_flow:
3576                 /* The flow does not match. */
3577                 continue;
3578         }
3579         ret = rte_errno; /* Save rte_errno before cleanup. */
3580         if (flow)
3581                 mlx5_flow_list_destroy(dev, &priv->flows, flow);
3582 exit:
3583         for (i = 0; i != hash_rxq_init_n; ++i) {
3584                 if (parser.queue[i].ibv_attr)
3585                         rte_free(parser.queue[i].ibv_attr);
3586         }
3587         rte_errno = ret; /* Restore rte_errno. */
3588         return -rte_errno;
3589 }
3590
3591 /**
3592  * Update queue for specific filter.
3593  *
3594  * @param dev
3595  *   Pointer to Ethernet device.
3596  * @param fdir_filter
3597  *   Filter to be updated.
3598  *
3599  * @return
3600  *   0 on success, a negative errno value otherwise and rte_errno is set.
3601  */
3602 static int
3603 mlx5_fdir_filter_update(struct rte_eth_dev *dev,
3604                         const struct rte_eth_fdir_filter *fdir_filter)
3605 {
3606         int ret;
3607
3608         ret = mlx5_fdir_filter_delete(dev, fdir_filter);
3609         if (ret)
3610                 return ret;
3611         return mlx5_fdir_filter_add(dev, fdir_filter);
3612 }
3613
3614 /**
3615  * Flush all filters.
3616  *
3617  * @param dev
3618  *   Pointer to Ethernet device.
3619  */
3620 static void
3621 mlx5_fdir_filter_flush(struct rte_eth_dev *dev)
3622 {
3623         struct priv *priv = dev->data->dev_private;
3624
3625         mlx5_flow_list_flush(dev, &priv->flows);
3626 }
3627
3628 /**
3629  * Get flow director information.
3630  *
3631  * @param dev
3632  *   Pointer to Ethernet device.
3633  * @param[out] fdir_info
3634  *   Resulting flow director information.
3635  */
3636 static void
3637 mlx5_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
3638 {
3639         struct rte_eth_fdir_masks *mask =
3640                 &dev->data->dev_conf.fdir_conf.mask;
3641
3642         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
3643         fdir_info->guarant_spc = 0;
3644         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
3645         fdir_info->max_flexpayload = 0;
3646         fdir_info->flow_types_mask[0] = 0;
3647         fdir_info->flex_payload_unit = 0;
3648         fdir_info->max_flex_payload_segment_num = 0;
3649         fdir_info->flex_payload_limit = 0;
3650         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
3651 }
3652
3653 /**
3654  * Deal with flow director operations.
3655  *
3656  * @param dev
3657  *   Pointer to Ethernet device.
3658  * @param filter_op
3659  *   Operation to perform.
3660  * @param arg
3661  *   Pointer to operation-specific structure.
3662  *
3663  * @return
3664  *   0 on success, a negative errno value otherwise and rte_errno is set.
3665  */
3666 static int
3667 mlx5_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
3668                     void *arg)
3669 {
3670         enum rte_fdir_mode fdir_mode =
3671                 dev->data->dev_conf.fdir_conf.mode;
3672
3673         if (filter_op == RTE_ETH_FILTER_NOP)
3674                 return 0;
3675         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
3676             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
3677                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
3678                         dev->data->port_id, fdir_mode);
3679                 rte_errno = EINVAL;
3680                 return -rte_errno;
3681         }
3682         switch (filter_op) {
3683         case RTE_ETH_FILTER_ADD:
3684                 return mlx5_fdir_filter_add(dev, arg);
3685         case RTE_ETH_FILTER_UPDATE:
3686                 return mlx5_fdir_filter_update(dev, arg);
3687         case RTE_ETH_FILTER_DELETE:
3688                 return mlx5_fdir_filter_delete(dev, arg);
3689         case RTE_ETH_FILTER_FLUSH:
3690                 mlx5_fdir_filter_flush(dev);
3691                 break;
3692         case RTE_ETH_FILTER_INFO:
3693                 mlx5_fdir_info_get(dev, arg);
3694                 break;
3695         default:
3696                 DRV_LOG(DEBUG, "port %u unknown operation %u",
3697                         dev->data->port_id, filter_op);
3698                 rte_errno = EINVAL;
3699                 return -rte_errno;
3700         }
3701         return 0;
3702 }
3703
3704 /**
3705  * Manage filter operations.
3706  *
3707  * @param dev
3708  *   Pointer to Ethernet device structure.
3709  * @param filter_type
3710  *   Filter type.
3711  * @param filter_op
3712  *   Operation to perform.
3713  * @param arg
3714  *   Pointer to operation-specific structure.
3715  *
3716  * @return
3717  *   0 on success, a negative errno value otherwise and rte_errno is set.
3718  */
3719 int
3720 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
3721                      enum rte_filter_type filter_type,
3722                      enum rte_filter_op filter_op,
3723                      void *arg)
3724 {
3725         switch (filter_type) {
3726         case RTE_ETH_FILTER_GENERIC:
3727                 if (filter_op != RTE_ETH_FILTER_GET) {
3728                         rte_errno = EINVAL;
3729                         return -rte_errno;
3730                 }
3731                 *(const void **)arg = &mlx5_flow_ops;
3732                 return 0;
3733         case RTE_ETH_FILTER_FDIR:
3734                 return mlx5_fdir_ctrl_func(dev, filter_op, arg);
3735         default:
3736                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
3737                         dev->data->port_id, filter_type);
3738                 rte_errno = ENOTSUP;
3739                 return -rte_errno;
3740         }
3741         return 0;
3742 }
3743
3744 /**
3745  * Detect number of Verbs flow priorities supported.
3746  *
3747  * @param dev
3748  *   Pointer to Ethernet device.
3749  *
3750  * @return
3751  *   number of supported Verbs flow priority.
3752  */
3753 unsigned int
3754 mlx5_get_max_verbs_prio(struct rte_eth_dev *dev)
3755 {
3756         struct priv *priv = dev->data->dev_private;
3757         unsigned int verb_priorities = MLX5_VERBS_FLOW_PRIO_8;
3758         struct {
3759                 struct ibv_flow_attr attr;
3760                 struct ibv_flow_spec_eth eth;
3761                 struct ibv_flow_spec_action_drop drop;
3762         } flow_attr = {
3763                 .attr = {
3764                         .num_of_specs = 2,
3765                 },
3766                 .eth = {
3767                         .type = IBV_FLOW_SPEC_ETH,
3768                         .size = sizeof(struct ibv_flow_spec_eth),
3769                 },
3770                 .drop = {
3771                         .size = sizeof(struct ibv_flow_spec_action_drop),
3772                         .type = IBV_FLOW_SPEC_ACTION_DROP,
3773                 },
3774         };
3775         struct ibv_flow *flow;
3776
3777         do {
3778                 flow_attr.attr.priority = verb_priorities - 1;
3779                 flow = mlx5_glue->create_flow(priv->flow_drop_queue->qp,
3780                                               &flow_attr.attr);
3781                 if (flow) {
3782                         claim_zero(mlx5_glue->destroy_flow(flow));
3783                         /* Try more priorities. */
3784                         verb_priorities *= 2;
3785                 } else {
3786                         /* Failed, restore last right number. */
3787                         verb_priorities /= 2;
3788                         break;
3789                 }
3790         } while (1);
3791         DRV_LOG(DEBUG, "port %u Verbs flow priorities: %d,"
3792                 " user flow priorities: %d",
3793                 dev->data->port_id, verb_priorities, MLX5_CTRL_FLOW_PRIORITY);
3794         return verb_priorities;
3795 }