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 <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_ethdev_driver.h>
  25 #include <rte_flow.h>
  26 #include <rte_flow_driver.h>
  27 #include <rte_malloc.h>
  28 #include <rte_ip.h>
  29
  30 #include "mlx5.h"
  31 #include "mlx5_defs.h"
  32 #include "mlx5_flow.h"
  33 #include "mlx5_glue.h"
  34 #include "mlx5_prm.h"
  35 #include "mlx5_rxtx.h"
  36
  37 /* Dev ops structure defined in mlx5.c */
  38 extern const struct eth_dev_ops mlx5_dev_ops;
  39 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  40
  41 /** Device flow drivers. */
  42 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  43 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  44 #endif
  45 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  46
  47 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  48
  49 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  50         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  51 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  52         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  53 #endif
  54         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  55         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  56 };
  57
  58 enum mlx5_expansion {
  59         MLX5_EXPANSION_ROOT,
  60         MLX5_EXPANSION_ROOT_OUTER,
  61         MLX5_EXPANSION_ROOT_ETH_VLAN,
  62         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  63         MLX5_EXPANSION_OUTER_ETH,
  64         MLX5_EXPANSION_OUTER_ETH_VLAN,
  65         MLX5_EXPANSION_OUTER_VLAN,
  66         MLX5_EXPANSION_OUTER_IPV4,
  67         MLX5_EXPANSION_OUTER_IPV4_UDP,
  68         MLX5_EXPANSION_OUTER_IPV4_TCP,
  69         MLX5_EXPANSION_OUTER_IPV6,
  70         MLX5_EXPANSION_OUTER_IPV6_UDP,
  71         MLX5_EXPANSION_OUTER_IPV6_TCP,
  72         MLX5_EXPANSION_VXLAN,
  73         MLX5_EXPANSION_VXLAN_GPE,
  74         MLX5_EXPANSION_GRE,
  75         MLX5_EXPANSION_MPLS,
  76         MLX5_EXPANSION_ETH,
  77         MLX5_EXPANSION_ETH_VLAN,
  78         MLX5_EXPANSION_VLAN,
  79         MLX5_EXPANSION_IPV4,
  80         MLX5_EXPANSION_IPV4_UDP,
  81         MLX5_EXPANSION_IPV4_TCP,
  82         MLX5_EXPANSION_IPV6,
  83         MLX5_EXPANSION_IPV6_UDP,
  84         MLX5_EXPANSION_IPV6_TCP,
  85 };
  86
  87 /** Supported expansion of items. */
  88 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  89         [MLX5_EXPANSION_ROOT] = {
  90                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  91                                                  MLX5_EXPANSION_IPV4,
  92                                                  MLX5_EXPANSION_IPV6),
  93                 .type = RTE_FLOW_ITEM_TYPE_END,
  94         },
  95         [MLX5_EXPANSION_ROOT_OUTER] = {
  96                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  97                                                  MLX5_EXPANSION_OUTER_IPV4,
  98                                                  MLX5_EXPANSION_OUTER_IPV6),
  99                 .type = RTE_FLOW_ITEM_TYPE_END,
 100         },
 101         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 102                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 103                 .type = RTE_FLOW_ITEM_TYPE_END,
 104         },
 105         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 106                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 107                 .type = RTE_FLOW_ITEM_TYPE_END,
 108         },
 109         [MLX5_EXPANSION_OUTER_ETH] = {
 110                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 111                                                  MLX5_EXPANSION_OUTER_IPV6,
 112                                                  MLX5_EXPANSION_MPLS),
 113                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 114                 .rss_types = 0,
 115         },
 116         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 117                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 118                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 119                 .rss_types = 0,
 120         },
 121         [MLX5_EXPANSION_OUTER_VLAN] = {
 122                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 123                                                  MLX5_EXPANSION_OUTER_IPV6),
 124                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 125         },
 126         [MLX5_EXPANSION_OUTER_IPV4] = {
 127                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 128                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 129                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 130                          MLX5_EXPANSION_GRE),
 131                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 132                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 133                         ETH_RSS_NONFRAG_IPV4_OTHER,
 134         },
 135         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 136                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 137                                                  MLX5_EXPANSION_VXLAN_GPE),
 138                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 139                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 140         },
 141         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 142                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 143                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 144         },
 145         [MLX5_EXPANSION_OUTER_IPV6] = {
 146                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 147                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 148                          MLX5_EXPANSION_OUTER_IPV6_TCP),
 149                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 150                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 151                         ETH_RSS_NONFRAG_IPV6_OTHER,
 152         },
 153         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 154                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 155                                                  MLX5_EXPANSION_VXLAN_GPE),
 156                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 157                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 158         },
 159         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 160                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 161                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 162         },
 163         [MLX5_EXPANSION_VXLAN] = {
 164                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 165                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 166         },
 167         [MLX5_EXPANSION_VXLAN_GPE] = {
 168                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 169                                                  MLX5_EXPANSION_IPV4,
 170                                                  MLX5_EXPANSION_IPV6),
 171                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 172         },
 173         [MLX5_EXPANSION_GRE] = {
 174                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 175                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 176         },
 177         [MLX5_EXPANSION_MPLS] = {
 178                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 179                                                  MLX5_EXPANSION_IPV6),
 180                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 181         },
 182         [MLX5_EXPANSION_ETH] = {
 183                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 184                                                  MLX5_EXPANSION_IPV6),
 185                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 186         },
 187         [MLX5_EXPANSION_ETH_VLAN] = {
 188                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 189                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 190         },
 191         [MLX5_EXPANSION_VLAN] = {
 192                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 193                                                  MLX5_EXPANSION_IPV6),
 194                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 195         },
 196         [MLX5_EXPANSION_IPV4] = {
 197                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 198                                                  MLX5_EXPANSION_IPV4_TCP),
 199                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 200                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 201                         ETH_RSS_NONFRAG_IPV4_OTHER,
 202         },
 203         [MLX5_EXPANSION_IPV4_UDP] = {
 204                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 205                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 206         },
 207         [MLX5_EXPANSION_IPV4_TCP] = {
 208                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 209                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 210         },
 211         [MLX5_EXPANSION_IPV6] = {
 212                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 213                                                  MLX5_EXPANSION_IPV6_TCP),
 214                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 215                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 216                         ETH_RSS_NONFRAG_IPV6_OTHER,
 217         },
 218         [MLX5_EXPANSION_IPV6_UDP] = {
 219                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 220                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 221         },
 222         [MLX5_EXPANSION_IPV6_TCP] = {
 223                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 224                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 225         },
 226 };
 227
 228 static const struct rte_flow_ops mlx5_flow_ops = {
 229         .validate = mlx5_flow_validate,
 230         .create = mlx5_flow_create,
 231         .destroy = mlx5_flow_destroy,
 232         .flush = mlx5_flow_flush,
 233         .isolate = mlx5_flow_isolate,
 234         .query = mlx5_flow_query,
 235 };
 236
 237 /* Convert FDIR request to Generic flow. */
 238 struct mlx5_fdir {
 239         struct rte_flow_attr attr;
 240         struct rte_flow_item items[4];
 241         struct rte_flow_item_eth l2;
 242         struct rte_flow_item_eth l2_mask;
 243         union {
 244                 struct rte_flow_item_ipv4 ipv4;
 245                 struct rte_flow_item_ipv6 ipv6;
 246         } l3;
 247         union {
 248                 struct rte_flow_item_ipv4 ipv4;
 249                 struct rte_flow_item_ipv6 ipv6;
 250         } l3_mask;
 251         union {
 252                 struct rte_flow_item_udp udp;
 253                 struct rte_flow_item_tcp tcp;
 254         } l4;
 255         union {
 256                 struct rte_flow_item_udp udp;
 257                 struct rte_flow_item_tcp tcp;
 258         } l4_mask;
 259         struct rte_flow_action actions[2];
 260         struct rte_flow_action_queue queue;
 261 };
 262
 263 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 264 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 265         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 266 };
 267
 268 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 269 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 270         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 271         { 9, 10, 11 }, { 12, 13, 14 },
 272 };
 273
 274 /* Tunnel information. */
 275 struct mlx5_flow_tunnel_info {
 276         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 277         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 278 };
 279
 280 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 281         {
 282                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 283                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 284         },
 285         {
 286                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 287                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 288         },
 289         {
 290                 .tunnel = MLX5_FLOW_LAYER_GRE,
 291                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 292         },
 293         {
 294                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 295                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 296         },
 297         {
 298                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 299                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 300         },
 301 };
 302
 303 /**
 304  * Discover the maximum number of priority available.
 305  *
 306  * @param[in] dev
 307  *   Pointer to the Ethernet device structure.
 308  *
 309  * @return
 310  *   number of supported flow priority on success, a negative errno
 311  *   value otherwise and rte_errno is set.
 312  */
 313 int
 314 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 315 {
 316         struct mlx5_priv *priv = dev->data->dev_private;
 317         struct {
 318                 struct ibv_flow_attr attr;
 319                 struct ibv_flow_spec_eth eth;
 320                 struct ibv_flow_spec_action_drop drop;
 321         } flow_attr = {
 322                 .attr = {
 323                         .num_of_specs = 2,
 324                         .port = (uint8_t)priv->ibv_port,
 325                 },
 326                 .eth = {
 327                         .type = IBV_FLOW_SPEC_ETH,
 328                         .size = sizeof(struct ibv_flow_spec_eth),
 329                 },
 330                 .drop = {
 331                         .size = sizeof(struct ibv_flow_spec_action_drop),
 332                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 333                 },
 334         };
 335         struct ibv_flow *flow;
 336         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 337         uint16_t vprio[] = { 8, 16 };
 338         int i;
 339         int priority = 0;
 340
 341         if (!drop) {
 342                 rte_errno = ENOTSUP;
 343                 return -rte_errno;
 344         }
 345         for (i = 0; i != RTE_DIM(vprio); i++) {
 346                 flow_attr.attr.priority = vprio[i] - 1;
 347                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 348                 if (!flow)
 349                         break;
 350                 claim_zero(mlx5_glue->destroy_flow(flow));
 351                 priority = vprio[i];
 352         }
 353         mlx5_hrxq_drop_release(dev);
 354         switch (priority) {
 355         case 8:
 356                 priority = RTE_DIM(priority_map_3);
 357                 break;
 358         case 16:
 359                 priority = RTE_DIM(priority_map_5);
 360                 break;
 361         default:
 362                 rte_errno = ENOTSUP;
 363                 DRV_LOG(ERR,
 364                         "port %u verbs maximum priority: %d expected 8/16",
 365                         dev->data->port_id, priority);
 366                 return -rte_errno;
 367         }
 368         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 369                 dev->data->port_id, priority);
 370         return priority;
 371 }
 372
 373 /**
 374  * Adjust flow priority based on the highest layer and the request priority.
 375  *
 376  * @param[in] dev
 377  *   Pointer to the Ethernet device structure.
 378  * @param[in] priority
 379  *   The rule base priority.
 380  * @param[in] subpriority
 381  *   The priority based on the items.
 382  *
 383  * @return
 384  *   The new priority.
 385  */
 386 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 387                                    uint32_t subpriority)
 388 {
 389         uint32_t res = 0;
 390         struct mlx5_priv *priv = dev->data->dev_private;
 391
 392         switch (priv->config.flow_prio) {
 393         case RTE_DIM(priority_map_3):
 394                 res = priority_map_3[priority][subpriority];
 395                 break;
 396         case RTE_DIM(priority_map_5):
 397                 res = priority_map_5[priority][subpriority];
 398                 break;
 399         }
 400         return  res;
 401 }
 402
 403 /**
 404  * Verify the @p item specifications (spec, last, mask) are compatible with the
 405  * NIC capabilities.
 406  *
 407  * @param[in] item
 408  *   Item specification.
 409  * @param[in] mask
 410  *   @p item->mask or flow default bit-masks.
 411  * @param[in] nic_mask
 412  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 413  * @param[in] size
 414  *   Bit-masks size in bytes.
 415  * @param[out] error
 416  *   Pointer to error structure.
 417  *
 418  * @return
 419  *   0 on success, a negative errno value otherwise and rte_errno is set.
 420  */
 421 int
 422 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 423                           const uint8_t *mask,
 424                           const uint8_t *nic_mask,
 425                           unsigned int size,
 426                           struct rte_flow_error *error)
 427 {
 428         unsigned int i;
 429
 430         assert(nic_mask);
 431         for (i = 0; i < size; ++i)
 432                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 433                         return rte_flow_error_set(error, ENOTSUP,
 434                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 435                                                   item,
 436                                                   "mask enables non supported"
 437                                                   " bits");
 438         if (!item->spec && (item->mask || item->last))
 439                 return rte_flow_error_set(error, EINVAL,
 440                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 441                                           "mask/last without a spec is not"
 442                                           " supported");
 443         if (item->spec && item->last) {
 444                 uint8_t spec[size];
 445                 uint8_t last[size];
 446                 unsigned int i;
 447                 int ret;
 448
 449                 for (i = 0; i < size; ++i) {
 450                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 451                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 452                 }
 453                 ret = memcmp(spec, last, size);
 454                 if (ret != 0)
 455                         return rte_flow_error_set(error, EINVAL,
 456                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 457                                                   item,
 458                                                   "range is not valid");
 459         }
 460         return 0;
 461 }
 462
 463 /**
 464  * Adjust the hash fields according to the @p flow information.
 465  *
 466  * @param[in] dev_flow.
 467  *   Pointer to the mlx5_flow.
 468  * @param[in] tunnel
 469  *   1 when the hash field is for a tunnel item.
 470  * @param[in] layer_types
 471  *   ETH_RSS_* types.
 472  * @param[in] hash_fields
 473  *   Item hash fields.
 474  *
 475  * @return
 476  *   The hash fileds that should be used.
 477  */
 478 uint64_t
 479 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 480                             int tunnel __rte_unused, uint64_t layer_types,
 481                             uint64_t hash_fields)
 482 {
 483         struct rte_flow *flow = dev_flow->flow;
 484 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 485         int rss_request_inner = flow->rss.level >= 2;
 486
 487         /* Check RSS hash level for tunnel. */
 488         if (tunnel && rss_request_inner)
 489                 hash_fields |= IBV_RX_HASH_INNER;
 490         else if (tunnel || rss_request_inner)
 491                 return 0;
 492 #endif
 493         /* Check if requested layer matches RSS hash fields. */
 494         if (!(flow->rss.types & layer_types))
 495                 return 0;
 496         return hash_fields;
 497 }
 498
 499 /**
 500  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 501  * if several tunnel rules are used on this queue, the tunnel ptype will be
 502  * cleared.
 503  *
 504  * @param rxq_ctrl
 505  *   Rx queue to update.
 506  */
 507 static void
 508 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 509 {
 510         unsigned int i;
 511         uint32_t tunnel_ptype = 0;
 512
 513         /* Look up for the ptype to use. */
 514         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 515                 if (!rxq_ctrl->flow_tunnels_n[i])
 516                         continue;
 517                 if (!tunnel_ptype) {
 518                         tunnel_ptype = tunnels_info[i].ptype;
 519                 } else {
 520                         tunnel_ptype = 0;
 521                         break;
 522                 }
 523         }
 524         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 525 }
 526
 527 /**
 528  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 529  * flow.
 530  *
 531  * @param[in] dev
 532  *   Pointer to the Ethernet device structure.
 533  * @param[in] dev_flow
 534  *   Pointer to device flow structure.
 535  */
 536 static void
 537 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 538 {
 539         struct mlx5_priv *priv = dev->data->dev_private;
 540         struct rte_flow *flow = dev_flow->flow;
 541         const int mark = !!(flow->actions &
 542                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 543         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 544         unsigned int i;
 545
 546         for (i = 0; i != flow->rss.queue_num; ++i) {
 547                 int idx = (*flow->queue)[i];
 548                 struct mlx5_rxq_ctrl *rxq_ctrl =
 549                         container_of((*priv->rxqs)[idx],
 550                                      struct mlx5_rxq_ctrl, rxq);
 551
 552                 if (mark) {
 553                         rxq_ctrl->rxq.mark = 1;
 554                         rxq_ctrl->flow_mark_n++;
 555                 }
 556                 if (tunnel) {
 557                         unsigned int j;
 558
 559                         /* Increase the counter matching the flow. */
 560                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 561                                 if ((tunnels_info[j].tunnel &
 562                                      dev_flow->layers) ==
 563                                     tunnels_info[j].tunnel) {
 564                                         rxq_ctrl->flow_tunnels_n[j]++;
 565                                         break;
 566                                 }
 567                         }
 568                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 569                 }
 570         }
 571 }
 572
 573 /**
 574  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 575  *
 576  * @param[in] dev
 577  *   Pointer to the Ethernet device structure.
 578  * @param[in] flow
 579  *   Pointer to flow structure.
 580  */
 581 static void
 582 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 583 {
 584         struct mlx5_flow *dev_flow;
 585
 586         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 587                 flow_drv_rxq_flags_set(dev, dev_flow);
 588 }
 589
 590 /**
 591  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 592  * device flow if no other flow uses it with the same kind of request.
 593  *
 594  * @param dev
 595  *   Pointer to Ethernet device.
 596  * @param[in] dev_flow
 597  *   Pointer to the device flow.
 598  */
 599 static void
 600 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 601 {
 602         struct mlx5_priv *priv = dev->data->dev_private;
 603         struct rte_flow *flow = dev_flow->flow;
 604         const int mark = !!(flow->actions &
 605                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 606         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 607         unsigned int i;
 608
 609         assert(dev->data->dev_started);
 610         for (i = 0; i != flow->rss.queue_num; ++i) {
 611                 int idx = (*flow->queue)[i];
 612                 struct mlx5_rxq_ctrl *rxq_ctrl =
 613                         container_of((*priv->rxqs)[idx],
 614                                      struct mlx5_rxq_ctrl, rxq);
 615
 616                 if (mark) {
 617                         rxq_ctrl->flow_mark_n--;
 618                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 619                 }
 620                 if (tunnel) {
 621                         unsigned int j;
 622
 623                         /* Decrease the counter matching the flow. */
 624                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 625                                 if ((tunnels_info[j].tunnel &
 626                                      dev_flow->layers) ==
 627                                     tunnels_info[j].tunnel) {
 628                                         rxq_ctrl->flow_tunnels_n[j]--;
 629                                         break;
 630                                 }
 631                         }
 632                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 633                 }
 634         }
 635 }
 636
 637 /**
 638  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 639  * @p flow if no other flow uses it with the same kind of request.
 640  *
 641  * @param dev
 642  *   Pointer to Ethernet device.
 643  * @param[in] flow
 644  *   Pointer to the flow.
 645  */
 646 static void
 647 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 648 {
 649         struct mlx5_flow *dev_flow;
 650
 651         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 652                 flow_drv_rxq_flags_trim(dev, dev_flow);
 653 }
 654
 655 /**
 656  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 657  *
 658  * @param dev
 659  *   Pointer to Ethernet device.
 660  */
 661 static void
 662 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 663 {
 664         struct mlx5_priv *priv = dev->data->dev_private;
 665         unsigned int i;
 666
 667         for (i = 0; i != priv->rxqs_n; ++i) {
 668                 struct mlx5_rxq_ctrl *rxq_ctrl;
 669                 unsigned int j;
 670
 671                 if (!(*priv->rxqs)[i])
 672                         continue;
 673                 rxq_ctrl = container_of((*priv->rxqs)[i],
 674                                         struct mlx5_rxq_ctrl, rxq);
 675                 rxq_ctrl->flow_mark_n = 0;
 676                 rxq_ctrl->rxq.mark = 0;
 677                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 678                         rxq_ctrl->flow_tunnels_n[j] = 0;
 679                 rxq_ctrl->rxq.tunnel = 0;
 680         }
 681 }
 682
 683 /*
 684  * Validate the flag action.
 685  *
 686  * @param[in] action_flags
 687  *   Bit-fields that holds the actions detected until now.
 688  * @param[in] attr
 689  *   Attributes of flow that includes this action.
 690  * @param[out] error
 691  *   Pointer to error structure.
 692  *
 693  * @return
 694  *   0 on success, a negative errno value otherwise and rte_errno is set.
 695  */
 696 int
 697 mlx5_flow_validate_action_flag(uint64_t action_flags,
 698                                const struct rte_flow_attr *attr,
 699                                struct rte_flow_error *error)
 700 {
 701
 702         if (action_flags & MLX5_FLOW_ACTION_DROP)
 703                 return rte_flow_error_set(error, EINVAL,
 704                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 705                                           "can't drop and flag in same flow");
 706         if (action_flags & MLX5_FLOW_ACTION_MARK)
 707                 return rte_flow_error_set(error, EINVAL,
 708                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 709                                           "can't mark and flag in same flow");
 710         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 711                 return rte_flow_error_set(error, EINVAL,
 712                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 713                                           "can't have 2 flag"
 714                                           " actions in same flow");
 715         if (attr->egress)
 716                 return rte_flow_error_set(error, ENOTSUP,
 717                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 718                                           "flag action not supported for "
 719                                           "egress");
 720         return 0;
 721 }
 722
 723 /*
 724  * Validate the mark action.
 725  *
 726  * @param[in] action
 727  *   Pointer to the queue action.
 728  * @param[in] action_flags
 729  *   Bit-fields that holds the actions detected until now.
 730  * @param[in] attr
 731  *   Attributes of flow that includes this action.
 732  * @param[out] error
 733  *   Pointer to error structure.
 734  *
 735  * @return
 736  *   0 on success, a negative errno value otherwise and rte_errno is set.
 737  */
 738 int
 739 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 740                                uint64_t action_flags,
 741                                const struct rte_flow_attr *attr,
 742                                struct rte_flow_error *error)
 743 {
 744         const struct rte_flow_action_mark *mark = action->conf;
 745
 746         if (!mark)
 747                 return rte_flow_error_set(error, EINVAL,
 748                                           RTE_FLOW_ERROR_TYPE_ACTION,
 749                                           action,
 750                                           "configuration cannot be null");
 751         if (mark->id >= MLX5_FLOW_MARK_MAX)
 752                 return rte_flow_error_set(error, EINVAL,
 753                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 754                                           &mark->id,
 755                                           "mark id must in 0 <= id < "
 756                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 757         if (action_flags & MLX5_FLOW_ACTION_DROP)
 758                 return rte_flow_error_set(error, EINVAL,
 759                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 760                                           "can't drop and mark in same flow");
 761         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 762                 return rte_flow_error_set(error, EINVAL,
 763                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 764                                           "can't flag and mark in same flow");
 765         if (action_flags & MLX5_FLOW_ACTION_MARK)
 766                 return rte_flow_error_set(error, EINVAL,
 767                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 768                                           "can't have 2 mark actions in same"
 769                                           " flow");
 770         if (attr->egress)
 771                 return rte_flow_error_set(error, ENOTSUP,
 772                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 773                                           "mark action not supported for "
 774                                           "egress");
 775         return 0;
 776 }
 777
 778 /*
 779  * Validate the drop action.
 780  *
 781  * @param[in] action_flags
 782  *   Bit-fields that holds the actions detected until now.
 783  * @param[in] attr
 784  *   Attributes of flow that includes this action.
 785  * @param[out] error
 786  *   Pointer to error structure.
 787  *
 788  * @return
 789  *   0 on success, a negative errno value otherwise and rte_errno is set.
 790  */
 791 int
 792 mlx5_flow_validate_action_drop(uint64_t action_flags,
 793                                const struct rte_flow_attr *attr,
 794                                struct rte_flow_error *error)
 795 {
 796         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 797                 return rte_flow_error_set(error, EINVAL,
 798                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 799                                           "can't drop and flag in same flow");
 800         if (action_flags & MLX5_FLOW_ACTION_MARK)
 801                 return rte_flow_error_set(error, EINVAL,
 802                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 803                                           "can't drop and mark in same flow");
 804         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 805                 return rte_flow_error_set(error, EINVAL,
 806                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 807                                           "can't have 2 fate actions in"
 808                                           " same flow");
 809         if (attr->egress)
 810                 return rte_flow_error_set(error, ENOTSUP,
 811                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 812                                           "drop action not supported for "
 813                                           "egress");
 814         return 0;
 815 }
 816
 817 /*
 818  * Validate the queue action.
 819  *
 820  * @param[in] action
 821  *   Pointer to the queue action.
 822  * @param[in] action_flags
 823  *   Bit-fields that holds the actions detected until now.
 824  * @param[in] dev
 825  *   Pointer to the Ethernet device structure.
 826  * @param[in] attr
 827  *   Attributes of flow that includes this action.
 828  * @param[out] error
 829  *   Pointer to error structure.
 830  *
 831  * @return
 832  *   0 on success, a negative errno value otherwise and rte_errno is set.
 833  */
 834 int
 835 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
 836                                 uint64_t action_flags,
 837                                 struct rte_eth_dev *dev,
 838                                 const struct rte_flow_attr *attr,
 839                                 struct rte_flow_error *error)
 840 {
 841         struct mlx5_priv *priv = dev->data->dev_private;
 842         const struct rte_flow_action_queue *queue = action->conf;
 843
 844         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 845                 return rte_flow_error_set(error, EINVAL,
 846                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 847                                           "can't have 2 fate actions in"
 848                                           " same flow");
 849         if (!priv->rxqs_n)
 850                 return rte_flow_error_set(error, EINVAL,
 851                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 852                                           NULL, "No Rx queues configured");
 853         if (queue->index >= priv->rxqs_n)
 854                 return rte_flow_error_set(error, EINVAL,
 855                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 856                                           &queue->index,
 857                                           "queue index out of range");
 858         if (!(*priv->rxqs)[queue->index])
 859                 return rte_flow_error_set(error, EINVAL,
 860                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 861                                           &queue->index,
 862                                           "queue is not configured");
 863         if (attr->egress)
 864                 return rte_flow_error_set(error, ENOTSUP,
 865                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 866                                           "queue action not supported for "
 867                                           "egress");
 868         return 0;
 869 }
 870
 871 /*
 872  * Validate the rss action.
 873  *
 874  * @param[in] action
 875  *   Pointer to the queue action.
 876  * @param[in] action_flags
 877  *   Bit-fields that holds the actions detected until now.
 878  * @param[in] dev
 879  *   Pointer to the Ethernet device structure.
 880  * @param[in] attr
 881  *   Attributes of flow that includes this action.
 882  * @param[in] item_flags
 883  *   Items that were detected.
 884  * @param[out] error
 885  *   Pointer to error structure.
 886  *
 887  * @return
 888  *   0 on success, a negative errno value otherwise and rte_errno is set.
 889  */
 890 int
 891 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
 892                               uint64_t action_flags,
 893                               struct rte_eth_dev *dev,
 894                               const struct rte_flow_attr *attr,
 895                               uint64_t item_flags,
 896                               struct rte_flow_error *error)
 897 {
 898         struct mlx5_priv *priv = dev->data->dev_private;
 899         const struct rte_flow_action_rss *rss = action->conf;
 900         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
 901         unsigned int i;
 902
 903         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 904                 return rte_flow_error_set(error, EINVAL,
 905                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 906                                           "can't have 2 fate actions"
 907                                           " in same flow");
 908         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
 909             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
 910                 return rte_flow_error_set(error, ENOTSUP,
 911                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 912                                           &rss->func,
 913                                           "RSS hash function not supported");
 914 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 915         if (rss->level > 2)
 916 #else
 917         if (rss->level > 1)
 918 #endif
 919                 return rte_flow_error_set(error, ENOTSUP,
 920                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 921                                           &rss->level,
 922                                           "tunnel RSS is not supported");
 923         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
 924         if (rss->key_len == 0 && rss->key != NULL)
 925                 return rte_flow_error_set(error, ENOTSUP,
 926                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 927                                           &rss->key_len,
 928                                           "RSS hash key length 0");
 929         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
 930                 return rte_flow_error_set(error, ENOTSUP,
 931                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 932                                           &rss->key_len,
 933                                           "RSS hash key too small");
 934         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
 935                 return rte_flow_error_set(error, ENOTSUP,
 936                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 937                                           &rss->key_len,
 938                                           "RSS hash key too large");
 939         if (rss->queue_num > priv->config.ind_table_max_size)
 940                 return rte_flow_error_set(error, ENOTSUP,
 941                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 942                                           &rss->queue_num,
 943                                           "number of queues too large");
 944         if (rss->types & MLX5_RSS_HF_MASK)
 945                 return rte_flow_error_set(error, ENOTSUP,
 946                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 947                                           &rss->types,
 948                                           "some RSS protocols are not"
 949                                           " supported");
 950         if (!priv->rxqs_n)
 951                 return rte_flow_error_set(error, EINVAL,
 952                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 953                                           NULL, "No Rx queues configured");
 954         if (!rss->queue_num)
 955                 return rte_flow_error_set(error, EINVAL,
 956                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 957                                           NULL, "No queues configured");
 958         for (i = 0; i != rss->queue_num; ++i) {
 959                 if (!(*priv->rxqs)[rss->queue[i]])
 960                         return rte_flow_error_set
 961                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 962                                  &rss->queue[i], "queue is not configured");
 963         }
 964         if (attr->egress)
 965                 return rte_flow_error_set(error, ENOTSUP,
 966                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 967                                           "rss action not supported for "
 968                                           "egress");
 969         if (rss->level > 1 &&  !tunnel)
 970                 return rte_flow_error_set(error, EINVAL,
 971                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
 972                                           "inner RSS is not supported for "
 973                                           "non-tunnel flows");
 974         return 0;
 975 }
 976
 977 /*
 978  * Validate the count action.
 979  *
 980  * @param[in] dev
 981  *   Pointer to the Ethernet device structure.
 982  * @param[in] attr
 983  *   Attributes of flow that includes this action.
 984  * @param[out] error
 985  *   Pointer to error structure.
 986  *
 987  * @return
 988  *   0 on success, a negative errno value otherwise and rte_errno is set.
 989  */
 990 int
 991 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
 992                                 const struct rte_flow_attr *attr,
 993                                 struct rte_flow_error *error)
 994 {
 995         if (attr->egress)
 996                 return rte_flow_error_set(error, ENOTSUP,
 997                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 998                                           "count action not supported for "
 999                                           "egress");
1000         return 0;
1001 }
1002
1003 /**
1004  * Verify the @p attributes will be correctly understood by the NIC and store
1005  * them in the @p flow if everything is correct.
1006  *
1007  * @param[in] dev
1008  *   Pointer to the Ethernet device structure.
1009  * @param[in] attributes
1010  *   Pointer to flow attributes
1011  * @param[out] error
1012  *   Pointer to error structure.
1013  *
1014  * @return
1015  *   0 on success, a negative errno value otherwise and rte_errno is set.
1016  */
1017 int
1018 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1019                               const struct rte_flow_attr *attributes,
1020                               struct rte_flow_error *error)
1021 {
1022         struct mlx5_priv *priv = dev->data->dev_private;
1023         uint32_t priority_max = priv->config.flow_prio - 1;
1024
1025         if (attributes->group)
1026                 return rte_flow_error_set(error, ENOTSUP,
1027                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1028                                           NULL, "groups is not supported");
1029         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1030             attributes->priority >= priority_max)
1031                 return rte_flow_error_set(error, ENOTSUP,
1032                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1033                                           NULL, "priority out of range");
1034         if (attributes->egress)
1035                 return rte_flow_error_set(error, ENOTSUP,
1036                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1037                                           "egress is not supported");
1038         if (attributes->transfer && !priv->config.dv_esw_en)
1039                 return rte_flow_error_set(error, ENOTSUP,
1040                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1041                                           NULL, "transfer is not supported");
1042         if (!attributes->ingress)
1043                 return rte_flow_error_set(error, EINVAL,
1044                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1045                                           NULL,
1046                                           "ingress attribute is mandatory");
1047         return 0;
1048 }
1049
1050 /**
1051  * Validate ICMP6 item.
1052  *
1053  * @param[in] item
1054  *   Item specification.
1055  * @param[in] item_flags
1056  *   Bit-fields that holds the items detected until now.
1057  * @param[out] error
1058  *   Pointer to error structure.
1059  *
1060  * @return
1061  *   0 on success, a negative errno value otherwise and rte_errno is set.
1062  */
1063 int
1064 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1065                                uint64_t item_flags,
1066                                uint8_t target_protocol,
1067                                struct rte_flow_error *error)
1068 {
1069         const struct rte_flow_item_icmp6 *mask = item->mask;
1070         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1071         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1072                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1073         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1074                                       MLX5_FLOW_LAYER_OUTER_L4;
1075         int ret;
1076
1077         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1078                 return rte_flow_error_set(error, EINVAL,
1079                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1080                                           "protocol filtering not compatible"
1081                                           " with ICMP6 layer");
1082         if (!(item_flags & l3m))
1083                 return rte_flow_error_set(error, EINVAL,
1084                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1085                                           "IPv6 is mandatory to filter on"
1086                                           " ICMP6");
1087         if (item_flags & l4m)
1088                 return rte_flow_error_set(error, EINVAL,
1089                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1090                                           "multiple L4 layers not supported");
1091         if (!mask)
1092                 mask = &rte_flow_item_icmp6_mask;
1093         ret = mlx5_flow_item_acceptable
1094                 (item, (const uint8_t *)mask,
1095                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1096                  sizeof(struct rte_flow_item_icmp6), error);
1097         if (ret < 0)
1098                 return ret;
1099         return 0;
1100 }
1101
1102 /**
1103  * Validate ICMP item.
1104  *
1105  * @param[in] item
1106  *   Item specification.
1107  * @param[in] item_flags
1108  *   Bit-fields that holds the items detected until now.
1109  * @param[out] error
1110  *   Pointer to error structure.
1111  *
1112  * @return
1113  *   0 on success, a negative errno value otherwise and rte_errno is set.
1114  */
1115 int
1116 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1117                              uint64_t item_flags,
1118                              uint8_t target_protocol,
1119                              struct rte_flow_error *error)
1120 {
1121         const struct rte_flow_item_icmp *mask = item->mask;
1122         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1123         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1124                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1125         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1126                                       MLX5_FLOW_LAYER_OUTER_L4;
1127         int ret;
1128
1129         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1130                 return rte_flow_error_set(error, EINVAL,
1131                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1132                                           "protocol filtering not compatible"
1133                                           " with ICMP layer");
1134         if (!(item_flags & l3m))
1135                 return rte_flow_error_set(error, EINVAL,
1136                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1137                                           "IPv4 is mandatory to filter"
1138                                           " on ICMP");
1139         if (item_flags & l4m)
1140                 return rte_flow_error_set(error, EINVAL,
1141                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1142                                           "multiple L4 layers not supported");
1143         if (!mask)
1144                 mask = &rte_flow_item_icmp_mask;
1145         ret = mlx5_flow_item_acceptable
1146                 (item, (const uint8_t *)mask,
1147                  (const uint8_t *)&rte_flow_item_icmp_mask,
1148                  sizeof(struct rte_flow_item_icmp), error);
1149         if (ret < 0)
1150                 return ret;
1151         return 0;
1152 }
1153
1154 /**
1155  * Validate Ethernet item.
1156  *
1157  * @param[in] item
1158  *   Item specification.
1159  * @param[in] item_flags
1160  *   Bit-fields that holds the items detected until now.
1161  * @param[out] error
1162  *   Pointer to error structure.
1163  *
1164  * @return
1165  *   0 on success, a negative errno value otherwise and rte_errno is set.
1166  */
1167 int
1168 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1169                             uint64_t item_flags,
1170                             struct rte_flow_error *error)
1171 {
1172         const struct rte_flow_item_eth *mask = item->mask;
1173         const struct rte_flow_item_eth nic_mask = {
1174                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1175                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1176                 .type = RTE_BE16(0xffff),
1177         };
1178         int ret;
1179         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1180         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1181                                        MLX5_FLOW_LAYER_OUTER_L2;
1182
1183         if (item_flags & ethm)
1184                 return rte_flow_error_set(error, ENOTSUP,
1185                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1186                                           "multiple L2 layers not supported");
1187         if (!mask)
1188                 mask = &rte_flow_item_eth_mask;
1189         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1190                                         (const uint8_t *)&nic_mask,
1191                                         sizeof(struct rte_flow_item_eth),
1192                                         error);
1193         return ret;
1194 }
1195
1196 /**
1197  * Validate VLAN item.
1198  *
1199  * @param[in] item
1200  *   Item specification.
1201  * @param[in] item_flags
1202  *   Bit-fields that holds the items detected until now.
1203  * @param[out] error
1204  *   Pointer to error structure.
1205  *
1206  * @return
1207  *   0 on success, a negative errno value otherwise and rte_errno is set.
1208  */
1209 int
1210 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1211                              uint64_t item_flags,
1212                              struct rte_flow_error *error)
1213 {
1214         const struct rte_flow_item_vlan *spec = item->spec;
1215         const struct rte_flow_item_vlan *mask = item->mask;
1216         const struct rte_flow_item_vlan nic_mask = {
1217                 .tci = RTE_BE16(0x0fff),
1218                 .inner_type = RTE_BE16(0xffff),
1219         };
1220         uint16_t vlan_tag = 0;
1221         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1222         int ret;
1223         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1224                                         MLX5_FLOW_LAYER_INNER_L4) :
1225                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1226                                         MLX5_FLOW_LAYER_OUTER_L4);
1227         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1228                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1229
1230         if (item_flags & vlanm)
1231                 return rte_flow_error_set(error, EINVAL,
1232                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1233                                           "multiple VLAN layers not supported");
1234         else if ((item_flags & l34m) != 0)
1235                 return rte_flow_error_set(error, EINVAL,
1236                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1237                                           "L2 layer cannot follow L3/L4 layer");
1238         if (!mask)
1239                 mask = &rte_flow_item_vlan_mask;
1240         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1241                                         (const uint8_t *)&nic_mask,
1242                                         sizeof(struct rte_flow_item_vlan),
1243                                         error);
1244         if (ret)
1245                 return ret;
1246         if (spec) {
1247                 vlan_tag = spec->tci;
1248                 vlan_tag &= mask->tci;
1249         }
1250         /*
1251          * From verbs perspective an empty VLAN is equivalent
1252          * to a packet without VLAN layer.
1253          */
1254         if (!vlan_tag)
1255                 return rte_flow_error_set(error, EINVAL,
1256                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1257                                           item->spec,
1258                                           "VLAN cannot be empty");
1259         return 0;
1260 }
1261
1262 /**
1263  * Validate IPV4 item.
1264  *
1265  * @param[in] item
1266  *   Item specification.
1267  * @param[in] item_flags
1268  *   Bit-fields that holds the items detected until now.
1269  * @param[in] acc_mask
1270  *   Acceptable mask, if NULL default internal default mask
1271  *   will be used to check whether item fields are supported.
1272  * @param[out] error
1273  *   Pointer to error structure.
1274  *
1275  * @return
1276  *   0 on success, a negative errno value otherwise and rte_errno is set.
1277  */
1278 int
1279 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1280                              uint64_t item_flags,
1281                              const struct rte_flow_item_ipv4 *acc_mask,
1282                              struct rte_flow_error *error)
1283 {
1284         const struct rte_flow_item_ipv4 *mask = item->mask;
1285         const struct rte_flow_item_ipv4 nic_mask = {
1286                 .hdr = {
1287                         .src_addr = RTE_BE32(0xffffffff),
1288                         .dst_addr = RTE_BE32(0xffffffff),
1289                         .type_of_service = 0xff,
1290                         .next_proto_id = 0xff,
1291                 },
1292         };
1293         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1294         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1295                                       MLX5_FLOW_LAYER_OUTER_L3;
1296         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1297                                       MLX5_FLOW_LAYER_OUTER_L4;
1298         int ret;
1299
1300         if (item_flags & l3m)
1301                 return rte_flow_error_set(error, ENOTSUP,
1302                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1303                                           "multiple L3 layers not supported");
1304         else if (item_flags & l4m)
1305                 return rte_flow_error_set(error, EINVAL,
1306                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1307                                           "L3 cannot follow an L4 layer.");
1308         if (!mask)
1309                 mask = &rte_flow_item_ipv4_mask;
1310         else if (mask->hdr.next_proto_id != 0 &&
1311                  mask->hdr.next_proto_id != 0xff)
1312                 return rte_flow_error_set(error, EINVAL,
1313                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1314                                           "partial mask is not supported"
1315                                           " for protocol");
1316         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1317                                         acc_mask ? (const uint8_t *)acc_mask
1318                                                  : (const uint8_t *)&nic_mask,
1319                                         sizeof(struct rte_flow_item_ipv4),
1320                                         error);
1321         if (ret < 0)
1322                 return ret;
1323         return 0;
1324 }
1325
1326 /**
1327  * Validate IPV6 item.
1328  *
1329  * @param[in] item
1330  *   Item specification.
1331  * @param[in] item_flags
1332  *   Bit-fields that holds the items detected until now.
1333  * @param[in] acc_mask
1334  *   Acceptable mask, if NULL default internal default mask
1335  *   will be used to check whether item fields are supported.
1336  * @param[out] error
1337  *   Pointer to error structure.
1338  *
1339  * @return
1340  *   0 on success, a negative errno value otherwise and rte_errno is set.
1341  */
1342 int
1343 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1344                              uint64_t item_flags,
1345                              const struct rte_flow_item_ipv6 *acc_mask,
1346                              struct rte_flow_error *error)
1347 {
1348         const struct rte_flow_item_ipv6 *mask = item->mask;
1349         const struct rte_flow_item_ipv6 nic_mask = {
1350                 .hdr = {
1351                         .src_addr =
1352                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1353                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1354                         .dst_addr =
1355                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1356                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1357                         .vtc_flow = RTE_BE32(0xffffffff),
1358                         .proto = 0xff,
1359                         .hop_limits = 0xff,
1360                 },
1361         };
1362         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1363         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1364                                       MLX5_FLOW_LAYER_OUTER_L3;
1365         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1366                                       MLX5_FLOW_LAYER_OUTER_L4;
1367         int ret;
1368
1369         if (item_flags & l3m)
1370                 return rte_flow_error_set(error, ENOTSUP,
1371                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1372                                           "multiple L3 layers not supported");
1373         else if (item_flags & l4m)
1374                 return rte_flow_error_set(error, EINVAL,
1375                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1376                                           "L3 cannot follow an L4 layer.");
1377         if (!mask)
1378                 mask = &rte_flow_item_ipv6_mask;
1379         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1380                                         acc_mask ? (const uint8_t *)acc_mask
1381                                                  : (const uint8_t *)&nic_mask,
1382                                         sizeof(struct rte_flow_item_ipv6),
1383                                         error);
1384         if (ret < 0)
1385                 return ret;
1386         return 0;
1387 }
1388
1389 /**
1390  * Validate UDP item.
1391  *
1392  * @param[in] item
1393  *   Item specification.
1394  * @param[in] item_flags
1395  *   Bit-fields that holds the items detected until now.
1396  * @param[in] target_protocol
1397  *   The next protocol in the previous item.
1398  * @param[in] flow_mask
1399  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1400  * @param[out] error
1401  *   Pointer to error structure.
1402  *
1403  * @return
1404  *   0 on success, a negative errno value otherwise and rte_errno is set.
1405  */
1406 int
1407 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1408                             uint64_t item_flags,
1409                             uint8_t target_protocol,
1410                             struct rte_flow_error *error)
1411 {
1412         const struct rte_flow_item_udp *mask = item->mask;
1413         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1414         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1415                                       MLX5_FLOW_LAYER_OUTER_L3;
1416         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1417                                       MLX5_FLOW_LAYER_OUTER_L4;
1418         int ret;
1419
1420         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1421                 return rte_flow_error_set(error, EINVAL,
1422                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1423                                           "protocol filtering not compatible"
1424                                           " with UDP layer");
1425         if (!(item_flags & l3m))
1426                 return rte_flow_error_set(error, EINVAL,
1427                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1428                                           "L3 is mandatory to filter on L4");
1429         if (item_flags & l4m)
1430                 return rte_flow_error_set(error, EINVAL,
1431                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1432                                           "multiple L4 layers not supported");
1433         if (!mask)
1434                 mask = &rte_flow_item_udp_mask;
1435         ret = mlx5_flow_item_acceptable
1436                 (item, (const uint8_t *)mask,
1437                  (const uint8_t *)&rte_flow_item_udp_mask,
1438                  sizeof(struct rte_flow_item_udp), error);
1439         if (ret < 0)
1440                 return ret;
1441         return 0;
1442 }
1443
1444 /**
1445  * Validate TCP item.
1446  *
1447  * @param[in] item
1448  *   Item specification.
1449  * @param[in] item_flags
1450  *   Bit-fields that holds the items detected until now.
1451  * @param[in] target_protocol
1452  *   The next protocol in the previous item.
1453  * @param[out] error
1454  *   Pointer to error structure.
1455  *
1456  * @return
1457  *   0 on success, a negative errno value otherwise and rte_errno is set.
1458  */
1459 int
1460 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1461                             uint64_t item_flags,
1462                             uint8_t target_protocol,
1463                             const struct rte_flow_item_tcp *flow_mask,
1464                             struct rte_flow_error *error)
1465 {
1466         const struct rte_flow_item_tcp *mask = item->mask;
1467         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1468         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1469                                       MLX5_FLOW_LAYER_OUTER_L3;
1470         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1471                                       MLX5_FLOW_LAYER_OUTER_L4;
1472         int ret;
1473
1474         assert(flow_mask);
1475         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1476                 return rte_flow_error_set(error, EINVAL,
1477                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1478                                           "protocol filtering not compatible"
1479                                           " with TCP layer");
1480         if (!(item_flags & l3m))
1481                 return rte_flow_error_set(error, EINVAL,
1482                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1483                                           "L3 is mandatory to filter on L4");
1484         if (item_flags & l4m)
1485                 return rte_flow_error_set(error, EINVAL,
1486                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1487                                           "multiple L4 layers not supported");
1488         if (!mask)
1489                 mask = &rte_flow_item_tcp_mask;
1490         ret = mlx5_flow_item_acceptable
1491                 (item, (const uint8_t *)mask,
1492                  (const uint8_t *)flow_mask,
1493                  sizeof(struct rte_flow_item_tcp), error);
1494         if (ret < 0)
1495                 return ret;
1496         return 0;
1497 }
1498
1499 /**
1500  * Validate VXLAN item.
1501  *
1502  * @param[in] item
1503  *   Item specification.
1504  * @param[in] item_flags
1505  *   Bit-fields that holds the items detected until now.
1506  * @param[in] target_protocol
1507  *   The next protocol in the previous item.
1508  * @param[out] error
1509  *   Pointer to error structure.
1510  *
1511  * @return
1512  *   0 on success, a negative errno value otherwise and rte_errno is set.
1513  */
1514 int
1515 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1516                               uint64_t item_flags,
1517                               struct rte_flow_error *error)
1518 {
1519         const struct rte_flow_item_vxlan *spec = item->spec;
1520         const struct rte_flow_item_vxlan *mask = item->mask;
1521         int ret;
1522         union vni {
1523                 uint32_t vlan_id;
1524                 uint8_t vni[4];
1525         } id = { .vlan_id = 0, };
1526         uint32_t vlan_id = 0;
1527
1528
1529         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1530                 return rte_flow_error_set(error, ENOTSUP,
1531                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1532                                           "multiple tunnel layers not"
1533                                           " supported");
1534         /*
1535          * Verify only UDPv4 is present as defined in
1536          * https://tools.ietf.org/html/rfc7348
1537          */
1538         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1539                 return rte_flow_error_set(error, EINVAL,
1540                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1541                                           "no outer UDP layer found");
1542         if (!mask)
1543                 mask = &rte_flow_item_vxlan_mask;
1544         ret = mlx5_flow_item_acceptable
1545                 (item, (const uint8_t *)mask,
1546                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1547                  sizeof(struct rte_flow_item_vxlan),
1548                  error);
1549         if (ret < 0)
1550                 return ret;
1551         if (spec) {
1552                 memcpy(&id.vni[1], spec->vni, 3);
1553                 vlan_id = id.vlan_id;
1554                 memcpy(&id.vni[1], mask->vni, 3);
1555                 vlan_id &= id.vlan_id;
1556         }
1557         /*
1558          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1559          * only this layer is defined in the Verbs specification it is
1560          * interpreted as wildcard and all packets will match this
1561          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1562          * udp), all packets matching the layers before will also
1563          * match this rule.  To avoid such situation, VNI 0 is
1564          * currently refused.
1565          */
1566         if (!vlan_id)
1567                 return rte_flow_error_set(error, ENOTSUP,
1568                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1569                                           "VXLAN vni cannot be 0");
1570         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1571                 return rte_flow_error_set(error, ENOTSUP,
1572                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1573                                           "VXLAN tunnel must be fully defined");
1574         return 0;
1575 }
1576
1577 /**
1578  * Validate VXLAN_GPE item.
1579  *
1580  * @param[in] item
1581  *   Item specification.
1582  * @param[in] item_flags
1583  *   Bit-fields that holds the items detected until now.
1584  * @param[in] priv
1585  *   Pointer to the private data structure.
1586  * @param[in] target_protocol
1587  *   The next protocol in the previous item.
1588  * @param[out] error
1589  *   Pointer to error structure.
1590  *
1591  * @return
1592  *   0 on success, a negative errno value otherwise and rte_errno is set.
1593  */
1594 int
1595 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1596                                   uint64_t item_flags,
1597                                   struct rte_eth_dev *dev,
1598                                   struct rte_flow_error *error)
1599 {
1600         struct mlx5_priv *priv = dev->data->dev_private;
1601         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1602         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1603         int ret;
1604         union vni {
1605                 uint32_t vlan_id;
1606                 uint8_t vni[4];
1607         } id = { .vlan_id = 0, };
1608         uint32_t vlan_id = 0;
1609
1610         if (!priv->config.l3_vxlan_en)
1611                 return rte_flow_error_set(error, ENOTSUP,
1612                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1613                                           "L3 VXLAN is not enabled by device"
1614                                           " parameter and/or not configured in"
1615                                           " firmware");
1616         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1617                 return rte_flow_error_set(error, ENOTSUP,
1618                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1619                                           "multiple tunnel layers not"
1620                                           " supported");
1621         /*
1622          * Verify only UDPv4 is present as defined in
1623          * https://tools.ietf.org/html/rfc7348
1624          */
1625         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1626                 return rte_flow_error_set(error, EINVAL,
1627                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1628                                           "no outer UDP layer found");
1629         if (!mask)
1630                 mask = &rte_flow_item_vxlan_gpe_mask;
1631         ret = mlx5_flow_item_acceptable
1632                 (item, (const uint8_t *)mask,
1633                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1634                  sizeof(struct rte_flow_item_vxlan_gpe),
1635                  error);
1636         if (ret < 0)
1637                 return ret;
1638         if (spec) {
1639                 if (spec->protocol)
1640                         return rte_flow_error_set(error, ENOTSUP,
1641                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1642                                                   item,
1643                                                   "VxLAN-GPE protocol"
1644                                                   " not supported");
1645                 memcpy(&id.vni[1], spec->vni, 3);
1646                 vlan_id = id.vlan_id;
1647                 memcpy(&id.vni[1], mask->vni, 3);
1648                 vlan_id &= id.vlan_id;
1649         }
1650         /*
1651          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1652          * layer is defined in the Verbs specification it is interpreted as
1653          * wildcard and all packets will match this rule, if it follows a full
1654          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1655          * before will also match this rule.  To avoid such situation, VNI 0
1656          * is currently refused.
1657          */
1658         if (!vlan_id)
1659                 return rte_flow_error_set(error, ENOTSUP,
1660                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1661                                           "VXLAN-GPE vni cannot be 0");
1662         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1663                 return rte_flow_error_set(error, ENOTSUP,
1664                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1665                                           "VXLAN-GPE tunnel must be fully"
1666                                           " defined");
1667         return 0;
1668 }
1669 /**
1670  * Validate GRE Key item.
1671  *
1672  * @param[in] item
1673  *   Item specification.
1674  * @param[in] item_flags
1675  *   Bit flags to mark detected items.
1676  * @param[in] gre_item
1677  *   Pointer to gre_item
1678  * @param[out] error
1679  *   Pointer to error structure.
1680  *
1681  * @return
1682  *   0 on success, a negative errno value otherwise and rte_errno is set.
1683  */
1684 int
1685 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
1686                                 uint64_t item_flags,
1687                                 const struct rte_flow_item *gre_item,
1688                                 struct rte_flow_error *error)
1689 {
1690         const rte_be32_t *mask = item->mask;
1691         int ret = 0;
1692         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
1693         const struct rte_flow_item_gre *gre_spec = gre_item->spec;
1694         const struct rte_flow_item_gre *gre_mask = gre_item->mask;
1695
1696         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
1697                 return rte_flow_error_set(error, ENOTSUP,
1698                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1699                                           "Multiple GRE key not support");
1700         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
1701                 return rte_flow_error_set(error, ENOTSUP,
1702                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1703                                           "No preceding GRE header");
1704         if (item_flags & MLX5_FLOW_LAYER_INNER)
1705                 return rte_flow_error_set(error, ENOTSUP,
1706                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1707                                           "GRE key following a wrong item");
1708         if (!gre_mask)
1709                 gre_mask = &rte_flow_item_gre_mask;
1710         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
1711                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
1712                 return rte_flow_error_set(error, EINVAL,
1713                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1714                                           "Key bit must be on");
1715
1716         if (!mask)
1717                 mask = &gre_key_default_mask;
1718         ret = mlx5_flow_item_acceptable
1719                 (item, (const uint8_t *)mask,
1720                  (const uint8_t *)&gre_key_default_mask,
1721                  sizeof(rte_be32_t), error);
1722         return ret;
1723 }
1724
1725 /**
1726  * Validate GRE item.
1727  *
1728  * @param[in] item
1729  *   Item specification.
1730  * @param[in] item_flags
1731  *   Bit flags to mark detected items.
1732  * @param[in] target_protocol
1733  *   The next protocol in the previous item.
1734  * @param[out] error
1735  *   Pointer to error structure.
1736  *
1737  * @return
1738  *   0 on success, a negative errno value otherwise and rte_errno is set.
1739  */
1740 int
1741 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
1742                             uint64_t item_flags,
1743                             uint8_t target_protocol,
1744                             struct rte_flow_error *error)
1745 {
1746         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
1747         const struct rte_flow_item_gre *mask = item->mask;
1748         int ret;
1749         const struct rte_flow_item_gre nic_mask = {
1750                 .c_rsvd0_ver = RTE_BE16(0xB000),
1751                 .protocol = RTE_BE16(UINT16_MAX),
1752         };
1753
1754         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
1755                 return rte_flow_error_set(error, EINVAL,
1756                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1757                                           "protocol filtering not compatible"
1758                                           " with this GRE layer");
1759         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1760                 return rte_flow_error_set(error, ENOTSUP,
1761                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1762                                           "multiple tunnel layers not"
1763                                           " supported");
1764         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
1765                 return rte_flow_error_set(error, ENOTSUP,
1766                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1767                                           "L3 Layer is missing");
1768         if (!mask)
1769                 mask = &rte_flow_item_gre_mask;
1770         ret = mlx5_flow_item_acceptable
1771                 (item, (const uint8_t *)mask,
1772                  (const uint8_t *)&nic_mask,
1773                  sizeof(struct rte_flow_item_gre), error);
1774         if (ret < 0)
1775                 return ret;
1776 #ifndef HAVE_MLX5DV_DR
1777 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1778         if (spec && (spec->protocol & mask->protocol))
1779                 return rte_flow_error_set(error, ENOTSUP,
1780                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1781                                           "without MPLS support the"
1782                                           " specification cannot be used for"
1783                                           " filtering");
1784 #endif
1785 #endif
1786         return 0;
1787 }
1788
1789 /**
1790  * Validate MPLS item.
1791  *
1792  * @param[in] dev
1793  *   Pointer to the rte_eth_dev structure.
1794  * @param[in] item
1795  *   Item specification.
1796  * @param[in] item_flags
1797  *   Bit-fields that holds the items detected until now.
1798  * @param[in] prev_layer
1799  *   The protocol layer indicated in previous item.
1800  * @param[out] error
1801  *   Pointer to error structure.
1802  *
1803  * @return
1804  *   0 on success, a negative errno value otherwise and rte_errno is set.
1805  */
1806 int
1807 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
1808                              const struct rte_flow_item *item __rte_unused,
1809                              uint64_t item_flags __rte_unused,
1810                              uint64_t prev_layer __rte_unused,
1811                              struct rte_flow_error *error)
1812 {
1813 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1814         const struct rte_flow_item_mpls *mask = item->mask;
1815         struct mlx5_priv *priv = dev->data->dev_private;
1816         int ret;
1817
1818         if (!priv->config.mpls_en)
1819                 return rte_flow_error_set(error, ENOTSUP,
1820                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1821                                           "MPLS not supported or"
1822                                           " disabled in firmware"
1823                                           " configuration.");
1824         /* MPLS over IP, UDP, GRE is allowed */
1825         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
1826                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
1827                             MLX5_FLOW_LAYER_GRE)))
1828                 return rte_flow_error_set(error, EINVAL,
1829                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1830                                           "protocol filtering not compatible"
1831                                           " with MPLS layer");
1832         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
1833         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
1834             !(item_flags & MLX5_FLOW_LAYER_GRE))
1835                 return rte_flow_error_set(error, ENOTSUP,
1836                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1837                                           "multiple tunnel layers not"
1838                                           " supported");
1839         if (!mask)
1840                 mask = &rte_flow_item_mpls_mask;
1841         ret = mlx5_flow_item_acceptable
1842                 (item, (const uint8_t *)mask,
1843                  (const uint8_t *)&rte_flow_item_mpls_mask,
1844                  sizeof(struct rte_flow_item_mpls), error);
1845         if (ret < 0)
1846                 return ret;
1847         return 0;
1848 #endif
1849         return rte_flow_error_set(error, ENOTSUP,
1850                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
1851                                   "MPLS is not supported by Verbs, please"
1852                                   " update.");
1853 }
1854
1855 static int
1856 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
1857                    const struct rte_flow_attr *attr __rte_unused,
1858                    const struct rte_flow_item items[] __rte_unused,
1859                    const struct rte_flow_action actions[] __rte_unused,
1860                    struct rte_flow_error *error)
1861 {
1862         return rte_flow_error_set(error, ENOTSUP,
1863                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
1864 }
1865
1866 static struct mlx5_flow *
1867 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
1868                   const struct rte_flow_item items[] __rte_unused,
1869                   const struct rte_flow_action actions[] __rte_unused,
1870                   struct rte_flow_error *error)
1871 {
1872         rte_flow_error_set(error, ENOTSUP,
1873                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
1874         return NULL;
1875 }
1876
1877 static int
1878 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
1879                     struct mlx5_flow *dev_flow __rte_unused,
1880                     const struct rte_flow_attr *attr __rte_unused,
1881                     const struct rte_flow_item items[] __rte_unused,
1882                     const struct rte_flow_action actions[] __rte_unused,
1883                     struct rte_flow_error *error)
1884 {
1885         return rte_flow_error_set(error, ENOTSUP,
1886                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
1887 }
1888
1889 static int
1890 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
1891                 struct rte_flow *flow __rte_unused,
1892                 struct rte_flow_error *error)
1893 {
1894         return rte_flow_error_set(error, ENOTSUP,
1895                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
1896 }
1897
1898 static void
1899 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
1900                  struct rte_flow *flow __rte_unused)
1901 {
1902 }
1903
1904 static void
1905 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
1906                   struct rte_flow *flow __rte_unused)
1907 {
1908 }
1909
1910 static int
1911 flow_null_query(struct rte_eth_dev *dev __rte_unused,
1912                 struct rte_flow *flow __rte_unused,
1913                 const struct rte_flow_action *actions __rte_unused,
1914                 void *data __rte_unused,
1915                 struct rte_flow_error *error)
1916 {
1917         return rte_flow_error_set(error, ENOTSUP,
1918                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
1919 }
1920
1921 /* Void driver to protect from null pointer reference. */
1922 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
1923         .validate = flow_null_validate,
1924         .prepare = flow_null_prepare,
1925         .translate = flow_null_translate,
1926         .apply = flow_null_apply,
1927         .remove = flow_null_remove,
1928         .destroy = flow_null_destroy,
1929         .query = flow_null_query,
1930 };
1931
1932 /**
1933  * Select flow driver type according to flow attributes and device
1934  * configuration.
1935  *
1936  * @param[in] dev
1937  *   Pointer to the dev structure.
1938  * @param[in] attr
1939  *   Pointer to the flow attributes.
1940  *
1941  * @return
1942  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
1943  */
1944 static enum mlx5_flow_drv_type
1945 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
1946 {
1947         struct mlx5_priv *priv = dev->data->dev_private;
1948         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
1949
1950         if (attr->transfer && priv->config.dv_esw_en)
1951                 type = MLX5_FLOW_TYPE_DV;
1952         if (!attr->transfer)
1953                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
1954                                                  MLX5_FLOW_TYPE_VERBS;
1955         return type;
1956 }
1957
1958 #define flow_get_drv_ops(type) flow_drv_ops[type]
1959
1960 /**
1961  * Flow driver validation API. This abstracts calling driver specific functions.
1962  * The type of flow driver is determined according to flow attributes.
1963  *
1964  * @param[in] dev
1965  *   Pointer to the dev structure.
1966  * @param[in] attr
1967  *   Pointer to the flow attributes.
1968  * @param[in] items
1969  *   Pointer to the list of items.
1970  * @param[in] actions
1971  *   Pointer to the list of actions.
1972  * @param[out] error
1973  *   Pointer to the error structure.
1974  *
1975  * @return
1976  *   0 on success, a negative errno value otherwise and rte_errno is set.
1977  */
1978 static inline int
1979 flow_drv_validate(struct rte_eth_dev *dev,
1980                   const struct rte_flow_attr *attr,
1981                   const struct rte_flow_item items[],
1982                   const struct rte_flow_action actions[],
1983                   struct rte_flow_error *error)
1984 {
1985         const struct mlx5_flow_driver_ops *fops;
1986         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
1987
1988         fops = flow_get_drv_ops(type);
1989         return fops->validate(dev, attr, items, actions, error);
1990 }
1991
1992 /**
1993  * Flow driver preparation API. This abstracts calling driver specific
1994  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1995  * calculates the size of memory required for device flow, allocates the memory,
1996  * initializes the device flow and returns the pointer.
1997  *
1998  * @note
1999  *   This function initializes device flow structure such as dv or verbs in
2000  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2001  *   rest. For example, adding returning device flow to flow->dev_flow list and
2002  *   setting backward reference to the flow should be done out of this function.
2003  *   layers field is not filled either.
2004  *
2005  * @param[in] attr
2006  *   Pointer to the flow attributes.
2007  * @param[in] items
2008  *   Pointer to the list of items.
2009  * @param[in] actions
2010  *   Pointer to the list of actions.
2011  * @param[out] error
2012  *   Pointer to the error structure.
2013  *
2014  * @return
2015  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2016  */
2017 static inline struct mlx5_flow *
2018 flow_drv_prepare(const struct rte_flow *flow,
2019                  const struct rte_flow_attr *attr,
2020                  const struct rte_flow_item items[],
2021                  const struct rte_flow_action actions[],
2022                  struct rte_flow_error *error)
2023 {
2024         const struct mlx5_flow_driver_ops *fops;
2025         enum mlx5_flow_drv_type type = flow->drv_type;
2026
2027         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2028         fops = flow_get_drv_ops(type);
2029         return fops->prepare(attr, items, actions, error);
2030 }
2031
2032 /**
2033  * Flow driver translation API. This abstracts calling driver specific
2034  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2035  * translates a generic flow into a driver flow. flow_drv_prepare() must
2036  * precede.
2037  *
2038  * @note
2039  *   dev_flow->layers could be filled as a result of parsing during translation
2040  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2041  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2042  *   flow->actions could be overwritten even though all the expanded dev_flows
2043  *   have the same actions.
2044  *
2045  * @param[in] dev
2046  *   Pointer to the rte dev structure.
2047  * @param[in, out] dev_flow
2048  *   Pointer to the mlx5 flow.
2049  * @param[in] attr
2050  *   Pointer to the flow attributes.
2051  * @param[in] items
2052  *   Pointer to the list of items.
2053  * @param[in] actions
2054  *   Pointer to the list of actions.
2055  * @param[out] error
2056  *   Pointer to the error structure.
2057  *
2058  * @return
2059  *   0 on success, a negative errno value otherwise and rte_errno is set.
2060  */
2061 static inline int
2062 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2063                    const struct rte_flow_attr *attr,
2064                    const struct rte_flow_item items[],
2065                    const struct rte_flow_action actions[],
2066                    struct rte_flow_error *error)
2067 {
2068         const struct mlx5_flow_driver_ops *fops;
2069         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2070
2071         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2072         fops = flow_get_drv_ops(type);
2073         return fops->translate(dev, dev_flow, attr, items, actions, error);
2074 }
2075
2076 /**
2077  * Flow driver apply API. This abstracts calling driver specific functions.
2078  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2079  * translated driver flows on to device. flow_drv_translate() must precede.
2080  *
2081  * @param[in] dev
2082  *   Pointer to Ethernet device structure.
2083  * @param[in, out] flow
2084  *   Pointer to flow structure.
2085  * @param[out] error
2086  *   Pointer to error structure.
2087  *
2088  * @return
2089  *   0 on success, a negative errno value otherwise and rte_errno is set.
2090  */
2091 static inline int
2092 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2093                struct rte_flow_error *error)
2094 {
2095         const struct mlx5_flow_driver_ops *fops;
2096         enum mlx5_flow_drv_type type = flow->drv_type;
2097
2098         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2099         fops = flow_get_drv_ops(type);
2100         return fops->apply(dev, flow, error);
2101 }
2102
2103 /**
2104  * Flow driver remove API. This abstracts calling driver specific functions.
2105  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2106  * on device. All the resources of the flow should be freed by calling
2107  * flow_drv_destroy().
2108  *
2109  * @param[in] dev
2110  *   Pointer to Ethernet device.
2111  * @param[in, out] flow
2112  *   Pointer to flow structure.
2113  */
2114 static inline void
2115 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2116 {
2117         const struct mlx5_flow_driver_ops *fops;
2118         enum mlx5_flow_drv_type type = flow->drv_type;
2119
2120         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2121         fops = flow_get_drv_ops(type);
2122         fops->remove(dev, flow);
2123 }
2124
2125 /**
2126  * Flow driver destroy API. This abstracts calling driver specific functions.
2127  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2128  * on device and releases resources of the flow.
2129  *
2130  * @param[in] dev
2131  *   Pointer to Ethernet device.
2132  * @param[in, out] flow
2133  *   Pointer to flow structure.
2134  */
2135 static inline void
2136 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2137 {
2138         const struct mlx5_flow_driver_ops *fops;
2139         enum mlx5_flow_drv_type type = flow->drv_type;
2140
2141         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2142         fops = flow_get_drv_ops(type);
2143         fops->destroy(dev, flow);
2144 }
2145
2146 /**
2147  * Validate a flow supported by the NIC.
2148  *
2149  * @see rte_flow_validate()
2150  * @see rte_flow_ops
2151  */
2152 int
2153 mlx5_flow_validate(struct rte_eth_dev *dev,
2154                    const struct rte_flow_attr *attr,
2155                    const struct rte_flow_item items[],
2156                    const struct rte_flow_action actions[],
2157                    struct rte_flow_error *error)
2158 {
2159         int ret;
2160
2161         ret = flow_drv_validate(dev, attr, items, actions, error);
2162         if (ret < 0)
2163                 return ret;
2164         return 0;
2165 }
2166
2167 /**
2168  * Get RSS action from the action list.
2169  *
2170  * @param[in] actions
2171  *   Pointer to the list of actions.
2172  *
2173  * @return
2174  *   Pointer to the RSS action if exist, else return NULL.
2175  */
2176 static const struct rte_flow_action_rss*
2177 flow_get_rss_action(const struct rte_flow_action actions[])
2178 {
2179         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2180                 switch (actions->type) {
2181                 case RTE_FLOW_ACTION_TYPE_RSS:
2182                         return (const struct rte_flow_action_rss *)
2183                                actions->conf;
2184                 default:
2185                         break;
2186                 }
2187         }
2188         return NULL;
2189 }
2190
2191 static unsigned int
2192 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2193 {
2194         const struct rte_flow_item *item;
2195         unsigned int has_vlan = 0;
2196
2197         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2198                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2199                         has_vlan = 1;
2200                         break;
2201                 }
2202         }
2203         if (has_vlan)
2204                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2205                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2206         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2207                                MLX5_EXPANSION_ROOT_OUTER;
2208 }
2209
2210 /**
2211  * Create a flow and add it to @p list.
2212  *
2213  * @param dev
2214  *   Pointer to Ethernet device.
2215  * @param list
2216  *   Pointer to a TAILQ flow list.
2217  * @param[in] attr
2218  *   Flow rule attributes.
2219  * @param[in] items
2220  *   Pattern specification (list terminated by the END pattern item).
2221  * @param[in] actions
2222  *   Associated actions (list terminated by the END action).
2223  * @param[out] error
2224  *   Perform verbose error reporting if not NULL.
2225  *
2226  * @return
2227  *   A flow on success, NULL otherwise and rte_errno is set.
2228  */
2229 static struct rte_flow *
2230 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2231                  const struct rte_flow_attr *attr,
2232                  const struct rte_flow_item items[],
2233                  const struct rte_flow_action actions[],
2234                  struct rte_flow_error *error)
2235 {
2236         struct rte_flow *flow = NULL;
2237         struct mlx5_flow *dev_flow;
2238         const struct rte_flow_action_rss *rss;
2239         union {
2240                 struct rte_flow_expand_rss buf;
2241                 uint8_t buffer[2048];
2242         } expand_buffer;
2243         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
2244         int ret;
2245         uint32_t i;
2246         uint32_t flow_size;
2247
2248         ret = flow_drv_validate(dev, attr, items, actions, error);
2249         if (ret < 0)
2250                 return NULL;
2251         flow_size = sizeof(struct rte_flow);
2252         rss = flow_get_rss_action(actions);
2253         if (rss)
2254                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
2255                                             sizeof(void *));
2256         else
2257                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
2258         flow = rte_calloc(__func__, 1, flow_size, 0);
2259         if (!flow) {
2260                 rte_errno = ENOMEM;
2261                 return NULL;
2262         }
2263         flow->drv_type = flow_get_drv_type(dev, attr);
2264         flow->ingress = attr->ingress;
2265         flow->transfer = attr->transfer;
2266         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
2267                flow->drv_type < MLX5_FLOW_TYPE_MAX);
2268         flow->queue = (void *)(flow + 1);
2269         LIST_INIT(&flow->dev_flows);
2270         if (rss && rss->types) {
2271                 unsigned int graph_root;
2272
2273                 graph_root = find_graph_root(items, rss->level);
2274                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
2275                                           items, rss->types,
2276                                           mlx5_support_expansion,
2277                                           graph_root);
2278                 assert(ret > 0 &&
2279                        (unsigned int)ret < sizeof(expand_buffer.buffer));
2280         } else {
2281                 buf->entries = 1;
2282                 buf->entry[0].pattern = (void *)(uintptr_t)items;
2283         }
2284         for (i = 0; i < buf->entries; ++i) {
2285                 dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern,
2286                                             actions, error);
2287                 if (!dev_flow)
2288                         goto error;
2289                 dev_flow->flow = flow;
2290                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
2291                 ret = flow_drv_translate(dev, dev_flow, attr,
2292                                          buf->entry[i].pattern,
2293                                          actions, error);
2294                 if (ret < 0)
2295                         goto error;
2296         }
2297         if (dev->data->dev_started) {
2298                 ret = flow_drv_apply(dev, flow, error);
2299                 if (ret < 0)
2300                         goto error;
2301         }
2302         TAILQ_INSERT_TAIL(list, flow, next);
2303         flow_rxq_flags_set(dev, flow);
2304         return flow;
2305 error:
2306         ret = rte_errno; /* Save rte_errno before cleanup. */
2307         assert(flow);
2308         flow_drv_destroy(dev, flow);
2309         rte_free(flow);
2310         rte_errno = ret; /* Restore rte_errno. */
2311         return NULL;
2312 }
2313
2314 /**
2315  * Create a flow.
2316  *
2317  * @see rte_flow_create()
2318  * @see rte_flow_ops
2319  */
2320 struct rte_flow *
2321 mlx5_flow_create(struct rte_eth_dev *dev,
2322                  const struct rte_flow_attr *attr,
2323                  const struct rte_flow_item items[],
2324                  const struct rte_flow_action actions[],
2325                  struct rte_flow_error *error)
2326 {
2327         struct mlx5_priv *priv = dev->data->dev_private;
2328
2329         return flow_list_create(dev, &priv->flows,
2330                                 attr, items, actions, error);
2331 }
2332
2333 /**
2334  * Destroy a flow in a list.
2335  *
2336  * @param dev
2337  *   Pointer to Ethernet device.
2338  * @param list
2339  *   Pointer to a TAILQ flow list.
2340  * @param[in] flow
2341  *   Flow to destroy.
2342  */
2343 static void
2344 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2345                   struct rte_flow *flow)
2346 {
2347         /*
2348          * Update RX queue flags only if port is started, otherwise it is
2349          * already clean.
2350          */
2351         if (dev->data->dev_started)
2352                 flow_rxq_flags_trim(dev, flow);
2353         flow_drv_destroy(dev, flow);
2354         TAILQ_REMOVE(list, flow, next);
2355         rte_free(flow->fdir);
2356         rte_free(flow);
2357 }
2358
2359 /**
2360  * Destroy all flows.
2361  *
2362  * @param dev
2363  *   Pointer to Ethernet device.
2364  * @param list
2365  *   Pointer to a TAILQ flow list.
2366  */
2367 void
2368 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2369 {
2370         while (!TAILQ_EMPTY(list)) {
2371                 struct rte_flow *flow;
2372
2373                 flow = TAILQ_FIRST(list);
2374                 flow_list_destroy(dev, list, flow);
2375         }
2376 }
2377
2378 /**
2379  * Remove all flows.
2380  *
2381  * @param dev
2382  *   Pointer to Ethernet device.
2383  * @param list
2384  *   Pointer to a TAILQ flow list.
2385  */
2386 void
2387 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2388 {
2389         struct rte_flow *flow;
2390
2391         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
2392                 flow_drv_remove(dev, flow);
2393         flow_rxq_flags_clear(dev);
2394 }
2395
2396 /**
2397  * Add all flows.
2398  *
2399  * @param dev
2400  *   Pointer to Ethernet device.
2401  * @param list
2402  *   Pointer to a TAILQ flow list.
2403  *
2404  * @return
2405  *   0 on success, a negative errno value otherwise and rte_errno is set.
2406  */
2407 int
2408 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2409 {
2410         struct rte_flow *flow;
2411         struct rte_flow_error error;
2412         int ret = 0;
2413
2414         TAILQ_FOREACH(flow, list, next) {
2415                 ret = flow_drv_apply(dev, flow, &error);
2416                 if (ret < 0)
2417                         goto error;
2418                 flow_rxq_flags_set(dev, flow);
2419         }
2420         return 0;
2421 error:
2422         ret = rte_errno; /* Save rte_errno before cleanup. */
2423         mlx5_flow_stop(dev, list);
2424         rte_errno = ret; /* Restore rte_errno. */
2425         return -rte_errno;
2426 }
2427
2428 /**
2429  * Verify the flow list is empty
2430  *
2431  * @param dev
2432  *  Pointer to Ethernet device.
2433  *
2434  * @return the number of flows not released.
2435  */
2436 int
2437 mlx5_flow_verify(struct rte_eth_dev *dev)
2438 {
2439         struct mlx5_priv *priv = dev->data->dev_private;
2440         struct rte_flow *flow;
2441         int ret = 0;
2442
2443         TAILQ_FOREACH(flow, &priv->flows, next) {
2444                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2445                         dev->data->port_id, (void *)flow);
2446                 ++ret;
2447         }
2448         return ret;
2449 }
2450
2451 /**
2452  * Enable a control flow configured from the control plane.
2453  *
2454  * @param dev
2455  *   Pointer to Ethernet device.
2456  * @param eth_spec
2457  *   An Ethernet flow spec to apply.
2458  * @param eth_mask
2459  *   An Ethernet flow mask to apply.
2460  * @param vlan_spec
2461  *   A VLAN flow spec to apply.
2462  * @param vlan_mask
2463  *   A VLAN flow mask to apply.
2464  *
2465  * @return
2466  *   0 on success, a negative errno value otherwise and rte_errno is set.
2467  */
2468 int
2469 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2470                     struct rte_flow_item_eth *eth_spec,
2471                     struct rte_flow_item_eth *eth_mask,
2472                     struct rte_flow_item_vlan *vlan_spec,
2473                     struct rte_flow_item_vlan *vlan_mask)
2474 {
2475         struct mlx5_priv *priv = dev->data->dev_private;
2476         const struct rte_flow_attr attr = {
2477                 .ingress = 1,
2478                 .priority = MLX5_FLOW_PRIO_RSVD,
2479         };
2480         struct rte_flow_item items[] = {
2481                 {
2482                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2483                         .spec = eth_spec,
2484                         .last = NULL,
2485                         .mask = eth_mask,
2486                 },
2487                 {
2488                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2489                                               RTE_FLOW_ITEM_TYPE_END,
2490                         .spec = vlan_spec,
2491                         .last = NULL,
2492                         .mask = vlan_mask,
2493                 },
2494                 {
2495                         .type = RTE_FLOW_ITEM_TYPE_END,
2496                 },
2497         };
2498         uint16_t queue[priv->reta_idx_n];
2499         struct rte_flow_action_rss action_rss = {
2500                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2501                 .level = 0,
2502                 .types = priv->rss_conf.rss_hf,
2503                 .key_len = priv->rss_conf.rss_key_len,
2504                 .queue_num = priv->reta_idx_n,
2505                 .key = priv->rss_conf.rss_key,
2506                 .queue = queue,
2507         };
2508         struct rte_flow_action actions[] = {
2509                 {
2510                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2511                         .conf = &action_rss,
2512                 },
2513                 {
2514                         .type = RTE_FLOW_ACTION_TYPE_END,
2515                 },
2516         };
2517         struct rte_flow *flow;
2518         struct rte_flow_error error;
2519         unsigned int i;
2520
2521         if (!priv->reta_idx_n || !priv->rxqs_n) {
2522                 return 0;
2523         }
2524         for (i = 0; i != priv->reta_idx_n; ++i)
2525                 queue[i] = (*priv->reta_idx)[i];
2526         flow = flow_list_create(dev, &priv->ctrl_flows,
2527                                 &attr, items, actions, &error);
2528         if (!flow)
2529                 return -rte_errno;
2530         return 0;
2531 }
2532
2533 /**
2534  * Enable a flow control configured from the control plane.
2535  *
2536  * @param dev
2537  *   Pointer to Ethernet device.
2538  * @param eth_spec
2539  *   An Ethernet flow spec to apply.
2540  * @param eth_mask
2541  *   An Ethernet flow mask to apply.
2542  *
2543  * @return
2544  *   0 on success, a negative errno value otherwise and rte_errno is set.
2545  */
2546 int
2547 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2548                struct rte_flow_item_eth *eth_spec,
2549                struct rte_flow_item_eth *eth_mask)
2550 {
2551         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2552 }
2553
2554 /**
2555  * Destroy a flow.
2556  *
2557  * @see rte_flow_destroy()
2558  * @see rte_flow_ops
2559  */
2560 int
2561 mlx5_flow_destroy(struct rte_eth_dev *dev,
2562                   struct rte_flow *flow,
2563                   struct rte_flow_error *error __rte_unused)
2564 {
2565         struct mlx5_priv *priv = dev->data->dev_private;
2566
2567         flow_list_destroy(dev, &priv->flows, flow);
2568         return 0;
2569 }
2570
2571 /**
2572  * Destroy all flows.
2573  *
2574  * @see rte_flow_flush()
2575  * @see rte_flow_ops
2576  */
2577 int
2578 mlx5_flow_flush(struct rte_eth_dev *dev,
2579                 struct rte_flow_error *error __rte_unused)
2580 {
2581         struct mlx5_priv *priv = dev->data->dev_private;
2582
2583         mlx5_flow_list_flush(dev, &priv->flows);
2584         return 0;
2585 }
2586
2587 /**
2588  * Isolated mode.
2589  *
2590  * @see rte_flow_isolate()
2591  * @see rte_flow_ops
2592  */
2593 int
2594 mlx5_flow_isolate(struct rte_eth_dev *dev,
2595                   int enable,
2596                   struct rte_flow_error *error)
2597 {
2598         struct mlx5_priv *priv = dev->data->dev_private;
2599
2600         if (dev->data->dev_started) {
2601                 rte_flow_error_set(error, EBUSY,
2602                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2603                                    NULL,
2604                                    "port must be stopped first");
2605                 return -rte_errno;
2606         }
2607         priv->isolated = !!enable;
2608         if (enable)
2609                 dev->dev_ops = &mlx5_dev_ops_isolate;
2610         else
2611                 dev->dev_ops = &mlx5_dev_ops;
2612         return 0;
2613 }
2614
2615 /**
2616  * Query a flow.
2617  *
2618  * @see rte_flow_query()
2619  * @see rte_flow_ops
2620  */
2621 static int
2622 flow_drv_query(struct rte_eth_dev *dev,
2623                struct rte_flow *flow,
2624                const struct rte_flow_action *actions,
2625                void *data,
2626                struct rte_flow_error *error)
2627 {
2628         const struct mlx5_flow_driver_ops *fops;
2629         enum mlx5_flow_drv_type ftype = flow->drv_type;
2630
2631         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
2632         fops = flow_get_drv_ops(ftype);
2633
2634         return fops->query(dev, flow, actions, data, error);
2635 }
2636
2637 /**
2638  * Query a flow.
2639  *
2640  * @see rte_flow_query()
2641  * @see rte_flow_ops
2642  */
2643 int
2644 mlx5_flow_query(struct rte_eth_dev *dev,
2645                 struct rte_flow *flow,
2646                 const struct rte_flow_action *actions,
2647                 void *data,
2648                 struct rte_flow_error *error)
2649 {
2650         int ret;
2651
2652         ret = flow_drv_query(dev, flow, actions, data, error);
2653         if (ret < 0)
2654                 return ret;
2655         return 0;
2656 }
2657
2658 /**
2659  * Convert a flow director filter to a generic flow.
2660  *
2661  * @param dev
2662  *   Pointer to Ethernet device.
2663  * @param fdir_filter
2664  *   Flow director filter to add.
2665  * @param attributes
2666  *   Generic flow parameters structure.
2667  *
2668  * @return
2669  *   0 on success, a negative errno value otherwise and rte_errno is set.
2670  */
2671 static int
2672 flow_fdir_filter_convert(struct rte_eth_dev *dev,
2673                          const struct rte_eth_fdir_filter *fdir_filter,
2674                          struct mlx5_fdir *attributes)
2675 {
2676         struct mlx5_priv *priv = dev->data->dev_private;
2677         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2678         const struct rte_eth_fdir_masks *mask =
2679                 &dev->data->dev_conf.fdir_conf.mask;
2680
2681         /* Validate queue number. */
2682         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2683                 DRV_LOG(ERR, "port %u invalid queue number %d",
2684                         dev->data->port_id, fdir_filter->action.rx_queue);
2685                 rte_errno = EINVAL;
2686                 return -rte_errno;
2687         }
2688         attributes->attr.ingress = 1;
2689         attributes->items[0] = (struct rte_flow_item) {
2690                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2691                 .spec = &attributes->l2,
2692                 .mask = &attributes->l2_mask,
2693         };
2694         switch (fdir_filter->action.behavior) {
2695         case RTE_ETH_FDIR_ACCEPT:
2696                 attributes->actions[0] = (struct rte_flow_action){
2697                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2698                         .conf = &attributes->queue,
2699                 };
2700                 break;
2701         case RTE_ETH_FDIR_REJECT:
2702                 attributes->actions[0] = (struct rte_flow_action){
2703                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2704                 };
2705                 break;
2706         default:
2707                 DRV_LOG(ERR, "port %u invalid behavior %d",
2708                         dev->data->port_id,
2709                         fdir_filter->action.behavior);
2710                 rte_errno = ENOTSUP;
2711                 return -rte_errno;
2712         }
2713         attributes->queue.index = fdir_filter->action.rx_queue;
2714         /* Handle L3. */
2715         switch (fdir_filter->input.flow_type) {
2716         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2717         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2718         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2719                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
2720                         .src_addr = input->flow.ip4_flow.src_ip,
2721                         .dst_addr = input->flow.ip4_flow.dst_ip,
2722                         .time_to_live = input->flow.ip4_flow.ttl,
2723                         .type_of_service = input->flow.ip4_flow.tos,
2724                 };
2725                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
2726                         .src_addr = mask->ipv4_mask.src_ip,
2727                         .dst_addr = mask->ipv4_mask.dst_ip,
2728                         .time_to_live = mask->ipv4_mask.ttl,
2729                         .type_of_service = mask->ipv4_mask.tos,
2730                         .next_proto_id = mask->ipv4_mask.proto,
2731                 };
2732                 attributes->items[1] = (struct rte_flow_item){
2733                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2734                         .spec = &attributes->l3,
2735                         .mask = &attributes->l3_mask,
2736                 };
2737                 break;
2738         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2739         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2740         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2741                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
2742                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2743                         .proto = input->flow.ipv6_flow.proto,
2744                 };
2745
2746                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2747                        input->flow.ipv6_flow.src_ip,
2748                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2749                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2750                        input->flow.ipv6_flow.dst_ip,
2751                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2752                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2753                        mask->ipv6_mask.src_ip,
2754                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2755                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2756                        mask->ipv6_mask.dst_ip,
2757                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2758                 attributes->items[1] = (struct rte_flow_item){
2759                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2760                         .spec = &attributes->l3,
2761                         .mask = &attributes->l3_mask,
2762                 };
2763                 break;
2764         default:
2765                 DRV_LOG(ERR, "port %u invalid flow type%d",
2766                         dev->data->port_id, fdir_filter->input.flow_type);
2767                 rte_errno = ENOTSUP;
2768                 return -rte_errno;
2769         }
2770         /* Handle L4. */
2771         switch (fdir_filter->input.flow_type) {
2772         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2773                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
2774                         .src_port = input->flow.udp4_flow.src_port,
2775                         .dst_port = input->flow.udp4_flow.dst_port,
2776                 };
2777                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
2778                         .src_port = mask->src_port_mask,
2779                         .dst_port = mask->dst_port_mask,
2780                 };
2781                 attributes->items[2] = (struct rte_flow_item){
2782                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2783                         .spec = &attributes->l4,
2784                         .mask = &attributes->l4_mask,
2785                 };
2786                 break;
2787         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2788                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
2789                         .src_port = input->flow.tcp4_flow.src_port,
2790                         .dst_port = input->flow.tcp4_flow.dst_port,
2791                 };
2792                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
2793                         .src_port = mask->src_port_mask,
2794                         .dst_port = mask->dst_port_mask,
2795                 };
2796                 attributes->items[2] = (struct rte_flow_item){
2797                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2798                         .spec = &attributes->l4,
2799                         .mask = &attributes->l4_mask,
2800                 };
2801                 break;
2802         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2803                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
2804                         .src_port = input->flow.udp6_flow.src_port,
2805                         .dst_port = input->flow.udp6_flow.dst_port,
2806                 };
2807                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
2808                         .src_port = mask->src_port_mask,
2809                         .dst_port = mask->dst_port_mask,
2810                 };
2811                 attributes->items[2] = (struct rte_flow_item){
2812                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2813                         .spec = &attributes->l4,
2814                         .mask = &attributes->l4_mask,
2815                 };
2816                 break;
2817         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2818                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
2819                         .src_port = input->flow.tcp6_flow.src_port,
2820                         .dst_port = input->flow.tcp6_flow.dst_port,
2821                 };
2822                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
2823                         .src_port = mask->src_port_mask,
2824                         .dst_port = mask->dst_port_mask,
2825                 };
2826                 attributes->items[2] = (struct rte_flow_item){
2827                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2828                         .spec = &attributes->l4,
2829                         .mask = &attributes->l4_mask,
2830                 };
2831                 break;
2832         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2833         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2834                 break;
2835         default:
2836                 DRV_LOG(ERR, "port %u invalid flow type%d",
2837                         dev->data->port_id, fdir_filter->input.flow_type);
2838                 rte_errno = ENOTSUP;
2839                 return -rte_errno;
2840         }
2841         return 0;
2842 }
2843
2844 #define FLOW_FDIR_CMP(f1, f2, fld) \
2845         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
2846
2847 /**
2848  * Compare two FDIR flows. If items and actions are identical, the two flows are
2849  * regarded as same.
2850  *
2851  * @param dev
2852  *   Pointer to Ethernet device.
2853  * @param f1
2854  *   FDIR flow to compare.
2855  * @param f2
2856  *   FDIR flow to compare.
2857  *
2858  * @return
2859  *   Zero on match, 1 otherwise.
2860  */
2861 static int
2862 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
2863 {
2864         if (FLOW_FDIR_CMP(f1, f2, attr) ||
2865             FLOW_FDIR_CMP(f1, f2, l2) ||
2866             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
2867             FLOW_FDIR_CMP(f1, f2, l3) ||
2868             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
2869             FLOW_FDIR_CMP(f1, f2, l4) ||
2870             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
2871             FLOW_FDIR_CMP(f1, f2, actions[0].type))
2872                 return 1;
2873         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
2874             FLOW_FDIR_CMP(f1, f2, queue))
2875                 return 1;
2876         return 0;
2877 }
2878
2879 /**
2880  * Search device flow list to find out a matched FDIR flow.
2881  *
2882  * @param dev
2883  *   Pointer to Ethernet device.
2884  * @param fdir_flow
2885  *   FDIR flow to lookup.
2886  *
2887  * @return
2888  *   Pointer of flow if found, NULL otherwise.
2889  */
2890 static struct rte_flow *
2891 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
2892 {
2893         struct mlx5_priv *priv = dev->data->dev_private;
2894         struct rte_flow *flow = NULL;
2895
2896         assert(fdir_flow);
2897         TAILQ_FOREACH(flow, &priv->flows, next) {
2898                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
2899                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
2900                                 dev->data->port_id, (void *)flow);
2901                         break;
2902                 }
2903         }
2904         return flow;
2905 }
2906
2907 /**
2908  * Add new flow director filter and store it in list.
2909  *
2910  * @param dev
2911  *   Pointer to Ethernet device.
2912  * @param fdir_filter
2913  *   Flow director filter to add.
2914  *
2915  * @return
2916  *   0 on success, a negative errno value otherwise and rte_errno is set.
2917  */
2918 static int
2919 flow_fdir_filter_add(struct rte_eth_dev *dev,
2920                      const struct rte_eth_fdir_filter *fdir_filter)
2921 {
2922         struct mlx5_priv *priv = dev->data->dev_private;
2923         struct mlx5_fdir *fdir_flow;
2924         struct rte_flow *flow;
2925         int ret;
2926
2927         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
2928         if (!fdir_flow) {
2929                 rte_errno = ENOMEM;
2930                 return -rte_errno;
2931         }
2932         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
2933         if (ret)
2934                 goto error;
2935         flow = flow_fdir_filter_lookup(dev, fdir_flow);
2936         if (flow) {
2937                 rte_errno = EEXIST;
2938                 goto error;
2939         }
2940         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
2941                                 fdir_flow->items, fdir_flow->actions, NULL);
2942         if (!flow)
2943                 goto error;
2944         assert(!flow->fdir);
2945         flow->fdir = fdir_flow;
2946         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
2947                 dev->data->port_id, (void *)flow);
2948         return 0;
2949 error:
2950         rte_free(fdir_flow);
2951         return -rte_errno;
2952 }
2953
2954 /**
2955  * Delete specific filter.
2956  *
2957  * @param dev
2958  *   Pointer to Ethernet device.
2959  * @param fdir_filter
2960  *   Filter to be deleted.
2961  *
2962  * @return
2963  *   0 on success, a negative errno value otherwise and rte_errno is set.
2964  */
2965 static int
2966 flow_fdir_filter_delete(struct rte_eth_dev *dev,
2967                         const struct rte_eth_fdir_filter *fdir_filter)
2968 {
2969         struct mlx5_priv *priv = dev->data->dev_private;
2970         struct rte_flow *flow;
2971         struct mlx5_fdir fdir_flow = {
2972                 .attr.group = 0,
2973         };
2974         int ret;
2975
2976         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
2977         if (ret)
2978                 return -rte_errno;
2979         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
2980         if (!flow) {
2981                 rte_errno = ENOENT;
2982                 return -rte_errno;
2983         }
2984         flow_list_destroy(dev, &priv->flows, flow);
2985         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
2986                 dev->data->port_id, (void *)flow);
2987         return 0;
2988 }
2989
2990 /**
2991  * Update queue for specific filter.
2992  *
2993  * @param dev
2994  *   Pointer to Ethernet device.
2995  * @param fdir_filter
2996  *   Filter to be updated.
2997  *
2998  * @return
2999  *   0 on success, a negative errno value otherwise and rte_errno is set.
3000  */
3001 static int
3002 flow_fdir_filter_update(struct rte_eth_dev *dev,
3003                         const struct rte_eth_fdir_filter *fdir_filter)
3004 {
3005         int ret;
3006
3007         ret = flow_fdir_filter_delete(dev, fdir_filter);
3008         if (ret)
3009                 return ret;
3010         return flow_fdir_filter_add(dev, fdir_filter);
3011 }
3012
3013 /**
3014  * Flush all filters.
3015  *
3016  * @param dev
3017  *   Pointer to Ethernet device.
3018  */
3019 static void
3020 flow_fdir_filter_flush(struct rte_eth_dev *dev)
3021 {
3022         struct mlx5_priv *priv = dev->data->dev_private;
3023
3024         mlx5_flow_list_flush(dev, &priv->flows);
3025 }
3026
3027 /**
3028  * Get flow director information.
3029  *
3030  * @param dev
3031  *   Pointer to Ethernet device.
3032  * @param[out] fdir_info
3033  *   Resulting flow director information.
3034  */
3035 static void
3036 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
3037 {
3038         struct rte_eth_fdir_masks *mask =
3039                 &dev->data->dev_conf.fdir_conf.mask;
3040
3041         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
3042         fdir_info->guarant_spc = 0;
3043         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
3044         fdir_info->max_flexpayload = 0;
3045         fdir_info->flow_types_mask[0] = 0;
3046         fdir_info->flex_payload_unit = 0;
3047         fdir_info->max_flex_payload_segment_num = 0;
3048         fdir_info->flex_payload_limit = 0;
3049         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
3050 }
3051
3052 /**
3053  * Deal with flow director operations.
3054  *
3055  * @param dev
3056  *   Pointer to Ethernet device.
3057  * @param filter_op
3058  *   Operation to perform.
3059  * @param arg
3060  *   Pointer to operation-specific structure.
3061  *
3062  * @return
3063  *   0 on success, a negative errno value otherwise and rte_errno is set.
3064  */
3065 static int
3066 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
3067                     void *arg)
3068 {
3069         enum rte_fdir_mode fdir_mode =
3070                 dev->data->dev_conf.fdir_conf.mode;
3071
3072         if (filter_op == RTE_ETH_FILTER_NOP)
3073                 return 0;
3074         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
3075             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
3076                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
3077                         dev->data->port_id, fdir_mode);
3078                 rte_errno = EINVAL;
3079                 return -rte_errno;
3080         }
3081         switch (filter_op) {
3082         case RTE_ETH_FILTER_ADD:
3083                 return flow_fdir_filter_add(dev, arg);
3084         case RTE_ETH_FILTER_UPDATE:
3085                 return flow_fdir_filter_update(dev, arg);
3086         case RTE_ETH_FILTER_DELETE:
3087                 return flow_fdir_filter_delete(dev, arg);
3088         case RTE_ETH_FILTER_FLUSH:
3089                 flow_fdir_filter_flush(dev);
3090                 break;
3091         case RTE_ETH_FILTER_INFO:
3092                 flow_fdir_info_get(dev, arg);
3093                 break;
3094         default:
3095                 DRV_LOG(DEBUG, "port %u unknown operation %u",
3096                         dev->data->port_id, filter_op);
3097                 rte_errno = EINVAL;
3098                 return -rte_errno;
3099         }
3100         return 0;
3101 }
3102
3103 /**
3104  * Manage filter operations.
3105  *
3106  * @param dev
3107  *   Pointer to Ethernet device structure.
3108  * @param filter_type
3109  *   Filter type.
3110  * @param filter_op
3111  *   Operation to perform.
3112  * @param arg
3113  *   Pointer to operation-specific structure.
3114  *
3115  * @return
3116  *   0 on success, a negative errno value otherwise and rte_errno is set.
3117  */
3118 int
3119 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
3120                      enum rte_filter_type filter_type,
3121                      enum rte_filter_op filter_op,
3122                      void *arg)
3123 {
3124         switch (filter_type) {
3125         case RTE_ETH_FILTER_GENERIC:
3126                 if (filter_op != RTE_ETH_FILTER_GET) {
3127                         rte_errno = EINVAL;
3128                         return -rte_errno;
3129                 }
3130                 *(const void **)arg = &mlx5_flow_ops;
3131                 return 0;
3132         case RTE_ETH_FILTER_FDIR:
3133                 return flow_fdir_ctrl_func(dev, filter_op, arg);
3134         default:
3135                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
3136                         dev->data->port_id, filter_type);
3137                 rte_errno = ENOTSUP;
3138                 return -rte_errno;
3139         }
3140         return 0;
3141 }