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_eth_ctrl.h>
  25 #include <rte_ethdev_driver.h>
  26 #include <rte_flow.h>
  27 #include <rte_flow_driver.h>
  28 #include <rte_malloc.h>
  29 #include <rte_ip.h>
  30
  31 #include "mlx5.h"
  32 #include "mlx5_defs.h"
  33 #include "mlx5_prm.h"
  34 #include "mlx5_glue.h"
  35 #include "mlx5_flow.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_tcf_drv_ops;
  46 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  47
  48 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  49
  50 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  51         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  52 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  53         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  54 #endif
  55         [MLX5_FLOW_TYPE_TCF] = &mlx5_flow_tcf_drv_ops,
  56         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  57         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  58 };
  59
  60 enum mlx5_expansion {
  61         MLX5_EXPANSION_ROOT,
  62         MLX5_EXPANSION_ROOT_OUTER,
  63         MLX5_EXPANSION_ROOT_ETH_VLAN,
  64         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  65         MLX5_EXPANSION_OUTER_ETH,
  66         MLX5_EXPANSION_OUTER_ETH_VLAN,
  67         MLX5_EXPANSION_OUTER_VLAN,
  68         MLX5_EXPANSION_OUTER_IPV4,
  69         MLX5_EXPANSION_OUTER_IPV4_UDP,
  70         MLX5_EXPANSION_OUTER_IPV4_TCP,
  71         MLX5_EXPANSION_OUTER_IPV6,
  72         MLX5_EXPANSION_OUTER_IPV6_UDP,
  73         MLX5_EXPANSION_OUTER_IPV6_TCP,
  74         MLX5_EXPANSION_VXLAN,
  75         MLX5_EXPANSION_VXLAN_GPE,
  76         MLX5_EXPANSION_GRE,
  77         MLX5_EXPANSION_MPLS,
  78         MLX5_EXPANSION_ETH,
  79         MLX5_EXPANSION_ETH_VLAN,
  80         MLX5_EXPANSION_VLAN,
  81         MLX5_EXPANSION_IPV4,
  82         MLX5_EXPANSION_IPV4_UDP,
  83         MLX5_EXPANSION_IPV4_TCP,
  84         MLX5_EXPANSION_IPV6,
  85         MLX5_EXPANSION_IPV6_UDP,
  86         MLX5_EXPANSION_IPV6_TCP,
  87 };
  88
  89 /** Supported expansion of items. */
  90 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  91         [MLX5_EXPANSION_ROOT] = {
  92                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  93                                                  MLX5_EXPANSION_IPV4,
  94                                                  MLX5_EXPANSION_IPV6),
  95                 .type = RTE_FLOW_ITEM_TYPE_END,
  96         },
  97         [MLX5_EXPANSION_ROOT_OUTER] = {
  98                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  99                                                  MLX5_EXPANSION_OUTER_IPV4,
 100                                                  MLX5_EXPANSION_OUTER_IPV6),
 101                 .type = RTE_FLOW_ITEM_TYPE_END,
 102         },
 103         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 104                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 105                 .type = RTE_FLOW_ITEM_TYPE_END,
 106         },
 107         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 108                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 109                 .type = RTE_FLOW_ITEM_TYPE_END,
 110         },
 111         [MLX5_EXPANSION_OUTER_ETH] = {
 112                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 113                                                  MLX5_EXPANSION_OUTER_IPV6,
 114                                                  MLX5_EXPANSION_MPLS),
 115                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 116                 .rss_types = 0,
 117         },
 118         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 119                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 120                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 121                 .rss_types = 0,
 122         },
 123         [MLX5_EXPANSION_OUTER_VLAN] = {
 124                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 125                                                  MLX5_EXPANSION_OUTER_IPV6),
 126                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 127         },
 128         [MLX5_EXPANSION_OUTER_IPV4] = {
 129                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 130                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 131                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 132                          MLX5_EXPANSION_GRE),
 133                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 134                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 135                         ETH_RSS_NONFRAG_IPV4_OTHER,
 136         },
 137         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 138                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 139                                                  MLX5_EXPANSION_VXLAN_GPE),
 140                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 141                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 142         },
 143         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 144                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 145                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 146         },
 147         [MLX5_EXPANSION_OUTER_IPV6] = {
 148                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 149                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 150                          MLX5_EXPANSION_OUTER_IPV6_TCP),
 151                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 152                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 153                         ETH_RSS_NONFRAG_IPV6_OTHER,
 154         },
 155         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 156                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 157                                                  MLX5_EXPANSION_VXLAN_GPE),
 158                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 159                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 160         },
 161         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 162                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 163                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 164         },
 165         [MLX5_EXPANSION_VXLAN] = {
 166                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 167                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 168         },
 169         [MLX5_EXPANSION_VXLAN_GPE] = {
 170                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 171                                                  MLX5_EXPANSION_IPV4,
 172                                                  MLX5_EXPANSION_IPV6),
 173                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 174         },
 175         [MLX5_EXPANSION_GRE] = {
 176                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 177                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 178         },
 179         [MLX5_EXPANSION_MPLS] = {
 180                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 181                                                  MLX5_EXPANSION_IPV6),
 182                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 183         },
 184         [MLX5_EXPANSION_ETH] = {
 185                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 186                                                  MLX5_EXPANSION_IPV6),
 187                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 188         },
 189         [MLX5_EXPANSION_ETH_VLAN] = {
 190                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 191                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 192         },
 193         [MLX5_EXPANSION_VLAN] = {
 194                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 195                                                  MLX5_EXPANSION_IPV6),
 196                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 197         },
 198         [MLX5_EXPANSION_IPV4] = {
 199                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 200                                                  MLX5_EXPANSION_IPV4_TCP),
 201                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 202                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 203                         ETH_RSS_NONFRAG_IPV4_OTHER,
 204         },
 205         [MLX5_EXPANSION_IPV4_UDP] = {
 206                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 207                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 208         },
 209         [MLX5_EXPANSION_IPV4_TCP] = {
 210                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 211                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 212         },
 213         [MLX5_EXPANSION_IPV6] = {
 214                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 215                                                  MLX5_EXPANSION_IPV6_TCP),
 216                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 217                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 218                         ETH_RSS_NONFRAG_IPV6_OTHER,
 219         },
 220         [MLX5_EXPANSION_IPV6_UDP] = {
 221                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 222                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 223         },
 224         [MLX5_EXPANSION_IPV6_TCP] = {
 225                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 226                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 227         },
 228 };
 229
 230 static const struct rte_flow_ops mlx5_flow_ops = {
 231         .validate = mlx5_flow_validate,
 232         .create = mlx5_flow_create,
 233         .destroy = mlx5_flow_destroy,
 234         .flush = mlx5_flow_flush,
 235         .isolate = mlx5_flow_isolate,
 236         .query = mlx5_flow_query,
 237 };
 238
 239 /* Convert FDIR request to Generic flow. */
 240 struct mlx5_fdir {
 241         struct rte_flow_attr attr;
 242         struct rte_flow_item items[4];
 243         struct rte_flow_item_eth l2;
 244         struct rte_flow_item_eth l2_mask;
 245         union {
 246                 struct rte_flow_item_ipv4 ipv4;
 247                 struct rte_flow_item_ipv6 ipv6;
 248         } l3;
 249         union {
 250                 struct rte_flow_item_ipv4 ipv4;
 251                 struct rte_flow_item_ipv6 ipv6;
 252         } l3_mask;
 253         union {
 254                 struct rte_flow_item_udp udp;
 255                 struct rte_flow_item_tcp tcp;
 256         } l4;
 257         union {
 258                 struct rte_flow_item_udp udp;
 259                 struct rte_flow_item_tcp tcp;
 260         } l4_mask;
 261         struct rte_flow_action actions[2];
 262         struct rte_flow_action_queue queue;
 263 };
 264
 265 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 266 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 267         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 268 };
 269
 270 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 271 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 272         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 273         { 9, 10, 11 }, { 12, 13, 14 },
 274 };
 275
 276 /* Tunnel information. */
 277 struct mlx5_flow_tunnel_info {
 278         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 279         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 280 };
 281
 282 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 283         {
 284                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 285                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 286         },
 287         {
 288                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 289                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 290         },
 291         {
 292                 .tunnel = MLX5_FLOW_LAYER_GRE,
 293                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 294         },
 295         {
 296                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 297                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 298         },
 299         {
 300                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 301                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 302         },
 303 };
 304
 305 /**
 306  * Discover the maximum number of priority available.
 307  *
 308  * @param[in] dev
 309  *   Pointer to the Ethernet device structure.
 310  *
 311  * @return
 312  *   number of supported flow priority on success, a negative errno
 313  *   value otherwise and rte_errno is set.
 314  */
 315 int
 316 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 317 {
 318         struct mlx5_priv *priv = dev->data->dev_private;
 319         struct {
 320                 struct ibv_flow_attr attr;
 321                 struct ibv_flow_spec_eth eth;
 322                 struct ibv_flow_spec_action_drop drop;
 323         } flow_attr = {
 324                 .attr = {
 325                         .num_of_specs = 2,
 326                         .port = (uint8_t)priv->ibv_port,
 327                 },
 328                 .eth = {
 329                         .type = IBV_FLOW_SPEC_ETH,
 330                         .size = sizeof(struct ibv_flow_spec_eth),
 331                 },
 332                 .drop = {
 333                         .size = sizeof(struct ibv_flow_spec_action_drop),
 334                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 335                 },
 336         };
 337         struct ibv_flow *flow;
 338         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 339         uint16_t vprio[] = { 8, 16 };
 340         int i;
 341         int priority = 0;
 342
 343         if (!drop) {
 344                 rte_errno = ENOTSUP;
 345                 return -rte_errno;
 346         }
 347         for (i = 0; i != RTE_DIM(vprio); i++) {
 348                 flow_attr.attr.priority = vprio[i] - 1;
 349                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 350                 if (!flow)
 351                         break;
 352                 claim_zero(mlx5_glue->destroy_flow(flow));
 353                 priority = vprio[i];
 354         }
 355         mlx5_hrxq_drop_release(dev);
 356         switch (priority) {
 357         case 8:
 358                 priority = RTE_DIM(priority_map_3);
 359                 break;
 360         case 16:
 361                 priority = RTE_DIM(priority_map_5);
 362                 break;
 363         default:
 364                 rte_errno = ENOTSUP;
 365                 DRV_LOG(ERR,
 366                         "port %u verbs maximum priority: %d expected 8/16",
 367                         dev->data->port_id, priority);
 368                 return -rte_errno;
 369         }
 370         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 371                 dev->data->port_id, priority);
 372         return priority;
 373 }
 374
 375 /**
 376  * Adjust flow priority based on the highest layer and the request priority.
 377  *
 378  * @param[in] dev
 379  *   Pointer to the Ethernet device structure.
 380  * @param[in] priority
 381  *   The rule base priority.
 382  * @param[in] subpriority
 383  *   The priority based on the items.
 384  *
 385  * @return
 386  *   The new priority.
 387  */
 388 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 389                                    uint32_t subpriority)
 390 {
 391         uint32_t res = 0;
 392         struct mlx5_priv *priv = dev->data->dev_private;
 393
 394         switch (priv->config.flow_prio) {
 395         case RTE_DIM(priority_map_3):
 396                 res = priority_map_3[priority][subpriority];
 397                 break;
 398         case RTE_DIM(priority_map_5):
 399                 res = priority_map_5[priority][subpriority];
 400                 break;
 401         }
 402         return  res;
 403 }
 404
 405 /**
 406  * Verify the @p item specifications (spec, last, mask) are compatible with the
 407  * NIC capabilities.
 408  *
 409  * @param[in] item
 410  *   Item specification.
 411  * @param[in] mask
 412  *   @p item->mask or flow default bit-masks.
 413  * @param[in] nic_mask
 414  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 415  * @param[in] size
 416  *   Bit-masks size in bytes.
 417  * @param[out] error
 418  *   Pointer to error structure.
 419  *
 420  * @return
 421  *   0 on success, a negative errno value otherwise and rte_errno is set.
 422  */
 423 int
 424 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 425                           const uint8_t *mask,
 426                           const uint8_t *nic_mask,
 427                           unsigned int size,
 428                           struct rte_flow_error *error)
 429 {
 430         unsigned int i;
 431
 432         assert(nic_mask);
 433         for (i = 0; i < size; ++i)
 434                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 435                         return rte_flow_error_set(error, ENOTSUP,
 436                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 437                                                   item,
 438                                                   "mask enables non supported"
 439                                                   " bits");
 440         if (!item->spec && (item->mask || item->last))
 441                 return rte_flow_error_set(error, EINVAL,
 442                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 443                                           "mask/last without a spec is not"
 444                                           " supported");
 445         if (item->spec && item->last) {
 446                 uint8_t spec[size];
 447                 uint8_t last[size];
 448                 unsigned int i;
 449                 int ret;
 450
 451                 for (i = 0; i < size; ++i) {
 452                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 453                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 454                 }
 455                 ret = memcmp(spec, last, size);
 456                 if (ret != 0)
 457                         return rte_flow_error_set(error, EINVAL,
 458                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 459                                                   item,
 460                                                   "range is not valid");
 461         }
 462         return 0;
 463 }
 464
 465 /**
 466  * Adjust the hash fields according to the @p flow information.
 467  *
 468  * @param[in] dev_flow.
 469  *   Pointer to the mlx5_flow.
 470  * @param[in] tunnel
 471  *   1 when the hash field is for a tunnel item.
 472  * @param[in] layer_types
 473  *   ETH_RSS_* types.
 474  * @param[in] hash_fields
 475  *   Item hash fields.
 476  *
 477  * @return
 478  *   The hash fileds that should be used.
 479  */
 480 uint64_t
 481 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 482                             int tunnel __rte_unused, uint64_t layer_types,
 483                             uint64_t hash_fields)
 484 {
 485         struct rte_flow *flow = dev_flow->flow;
 486 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 487         int rss_request_inner = flow->rss.level >= 2;
 488
 489         /* Check RSS hash level for tunnel. */
 490         if (tunnel && rss_request_inner)
 491                 hash_fields |= IBV_RX_HASH_INNER;
 492         else if (tunnel || rss_request_inner)
 493                 return 0;
 494 #endif
 495         /* Check if requested layer matches RSS hash fields. */
 496         if (!(flow->rss.types & layer_types))
 497                 return 0;
 498         return hash_fields;
 499 }
 500
 501 /**
 502  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 503  * if several tunnel rules are used on this queue, the tunnel ptype will be
 504  * cleared.
 505  *
 506  * @param rxq_ctrl
 507  *   Rx queue to update.
 508  */
 509 static void
 510 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 511 {
 512         unsigned int i;
 513         uint32_t tunnel_ptype = 0;
 514
 515         /* Look up for the ptype to use. */
 516         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 517                 if (!rxq_ctrl->flow_tunnels_n[i])
 518                         continue;
 519                 if (!tunnel_ptype) {
 520                         tunnel_ptype = tunnels_info[i].ptype;
 521                 } else {
 522                         tunnel_ptype = 0;
 523                         break;
 524                 }
 525         }
 526         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 527 }
 528
 529 /**
 530  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 531  * flow.
 532  *
 533  * @param[in] dev
 534  *   Pointer to the Ethernet device structure.
 535  * @param[in] dev_flow
 536  *   Pointer to device flow structure.
 537  */
 538 static void
 539 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 540 {
 541         struct mlx5_priv *priv = dev->data->dev_private;
 542         struct rte_flow *flow = dev_flow->flow;
 543         const int mark = !!(flow->actions &
 544                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 545         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 546         unsigned int i;
 547
 548         for (i = 0; i != flow->rss.queue_num; ++i) {
 549                 int idx = (*flow->queue)[i];
 550                 struct mlx5_rxq_ctrl *rxq_ctrl =
 551                         container_of((*priv->rxqs)[idx],
 552                                      struct mlx5_rxq_ctrl, rxq);
 553
 554                 if (mark) {
 555                         rxq_ctrl->rxq.mark = 1;
 556                         rxq_ctrl->flow_mark_n++;
 557                 }
 558                 if (tunnel) {
 559                         unsigned int j;
 560
 561                         /* Increase the counter matching the flow. */
 562                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 563                                 if ((tunnels_info[j].tunnel &
 564                                      dev_flow->layers) ==
 565                                     tunnels_info[j].tunnel) {
 566                                         rxq_ctrl->flow_tunnels_n[j]++;
 567                                         break;
 568                                 }
 569                         }
 570                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 571                 }
 572         }
 573 }
 574
 575 /**
 576  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 577  *
 578  * @param[in] dev
 579  *   Pointer to the Ethernet device structure.
 580  * @param[in] flow
 581  *   Pointer to flow structure.
 582  */
 583 static void
 584 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 585 {
 586         struct mlx5_flow *dev_flow;
 587
 588         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 589                 flow_drv_rxq_flags_set(dev, dev_flow);
 590 }
 591
 592 /**
 593  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 594  * device flow if no other flow uses it with the same kind of request.
 595  *
 596  * @param dev
 597  *   Pointer to Ethernet device.
 598  * @param[in] dev_flow
 599  *   Pointer to the device flow.
 600  */
 601 static void
 602 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 603 {
 604         struct mlx5_priv *priv = dev->data->dev_private;
 605         struct rte_flow *flow = dev_flow->flow;
 606         const int mark = !!(flow->actions &
 607                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 608         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 609         unsigned int i;
 610
 611         assert(dev->data->dev_started);
 612         for (i = 0; i != flow->rss.queue_num; ++i) {
 613                 int idx = (*flow->queue)[i];
 614                 struct mlx5_rxq_ctrl *rxq_ctrl =
 615                         container_of((*priv->rxqs)[idx],
 616                                      struct mlx5_rxq_ctrl, rxq);
 617
 618                 if (mark) {
 619                         rxq_ctrl->flow_mark_n--;
 620                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 621                 }
 622                 if (tunnel) {
 623                         unsigned int j;
 624
 625                         /* Decrease the counter matching the flow. */
 626                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 627                                 if ((tunnels_info[j].tunnel &
 628                                      dev_flow->layers) ==
 629                                     tunnels_info[j].tunnel) {
 630                                         rxq_ctrl->flow_tunnels_n[j]--;
 631                                         break;
 632                                 }
 633                         }
 634                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 635                 }
 636         }
 637 }
 638
 639 /**
 640  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 641  * @p flow if no other flow uses it with the same kind of request.
 642  *
 643  * @param dev
 644  *   Pointer to Ethernet device.
 645  * @param[in] flow
 646  *   Pointer to the flow.
 647  */
 648 static void
 649 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 650 {
 651         struct mlx5_flow *dev_flow;
 652
 653         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 654                 flow_drv_rxq_flags_trim(dev, dev_flow);
 655 }
 656
 657 /**
 658  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 659  *
 660  * @param dev
 661  *   Pointer to Ethernet device.
 662  */
 663 static void
 664 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 665 {
 666         struct mlx5_priv *priv = dev->data->dev_private;
 667         unsigned int i;
 668
 669         for (i = 0; i != priv->rxqs_n; ++i) {
 670                 struct mlx5_rxq_ctrl *rxq_ctrl;
 671                 unsigned int j;
 672
 673                 if (!(*priv->rxqs)[i])
 674                         continue;
 675                 rxq_ctrl = container_of((*priv->rxqs)[i],
 676                                         struct mlx5_rxq_ctrl, rxq);
 677                 rxq_ctrl->flow_mark_n = 0;
 678                 rxq_ctrl->rxq.mark = 0;
 679                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 680                         rxq_ctrl->flow_tunnels_n[j] = 0;
 681                 rxq_ctrl->rxq.tunnel = 0;
 682         }
 683 }
 684
 685 /*
 686  * Validate the flag action.
 687  *
 688  * @param[in] action_flags
 689  *   Bit-fields that holds the actions detected until now.
 690  * @param[in] attr
 691  *   Attributes of flow that includes this action.
 692  * @param[out] error
 693  *   Pointer to error structure.
 694  *
 695  * @return
 696  *   0 on success, a negative errno value otherwise and rte_errno is set.
 697  */
 698 int
 699 mlx5_flow_validate_action_flag(uint64_t action_flags,
 700                                const struct rte_flow_attr *attr,
 701                                struct rte_flow_error *error)
 702 {
 703
 704         if (action_flags & MLX5_FLOW_ACTION_DROP)
 705                 return rte_flow_error_set(error, EINVAL,
 706                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 707                                           "can't drop and flag in same flow");
 708         if (action_flags & MLX5_FLOW_ACTION_MARK)
 709                 return rte_flow_error_set(error, EINVAL,
 710                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 711                                           "can't mark and flag in same flow");
 712         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 713                 return rte_flow_error_set(error, EINVAL,
 714                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 715                                           "can't have 2 flag"
 716                                           " actions in same flow");
 717         if (attr->egress)
 718                 return rte_flow_error_set(error, ENOTSUP,
 719                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 720                                           "flag action not supported for "
 721                                           "egress");
 722         return 0;
 723 }
 724
 725 /*
 726  * Validate the mark action.
 727  *
 728  * @param[in] action
 729  *   Pointer to the queue action.
 730  * @param[in] action_flags
 731  *   Bit-fields that holds the actions detected until now.
 732  * @param[in] attr
 733  *   Attributes of flow that includes this action.
 734  * @param[out] error
 735  *   Pointer to error structure.
 736  *
 737  * @return
 738  *   0 on success, a negative errno value otherwise and rte_errno is set.
 739  */
 740 int
 741 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 742                                uint64_t action_flags,
 743                                const struct rte_flow_attr *attr,
 744                                struct rte_flow_error *error)
 745 {
 746         const struct rte_flow_action_mark *mark = action->conf;
 747
 748         if (!mark)
 749                 return rte_flow_error_set(error, EINVAL,
 750                                           RTE_FLOW_ERROR_TYPE_ACTION,
 751                                           action,
 752                                           "configuration cannot be null");
 753         if (mark->id >= MLX5_FLOW_MARK_MAX)
 754                 return rte_flow_error_set(error, EINVAL,
 755                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 756                                           &mark->id,
 757                                           "mark id must in 0 <= id < "
 758                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 759         if (action_flags & MLX5_FLOW_ACTION_DROP)
 760                 return rte_flow_error_set(error, EINVAL,
 761                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 762                                           "can't drop and mark in same flow");
 763         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 764                 return rte_flow_error_set(error, EINVAL,
 765                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 766                                           "can't flag and mark in same flow");
 767         if (action_flags & MLX5_FLOW_ACTION_MARK)
 768                 return rte_flow_error_set(error, EINVAL,
 769                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 770                                           "can't have 2 mark actions in same"
 771                                           " flow");
 772         if (attr->egress)
 773                 return rte_flow_error_set(error, ENOTSUP,
 774                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 775                                           "mark action not supported for "
 776                                           "egress");
 777         return 0;
 778 }
 779
 780 /*
 781  * Validate the drop action.
 782  *
 783  * @param[in] action_flags
 784  *   Bit-fields that holds the actions detected until now.
 785  * @param[in] attr
 786  *   Attributes of flow that includes this action.
 787  * @param[out] error
 788  *   Pointer to error structure.
 789  *
 790  * @return
 791  *   0 on success, a negative errno value otherwise and rte_errno is set.
 792  */
 793 int
 794 mlx5_flow_validate_action_drop(uint64_t action_flags,
 795                                const struct rte_flow_attr *attr,
 796                                struct rte_flow_error *error)
 797 {
 798         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 799                 return rte_flow_error_set(error, EINVAL,
 800                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 801                                           "can't drop and flag in same flow");
 802         if (action_flags & MLX5_FLOW_ACTION_MARK)
 803                 return rte_flow_error_set(error, EINVAL,
 804                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 805                                           "can't drop and mark in same flow");
 806         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 807                 return rte_flow_error_set(error, EINVAL,
 808                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 809                                           "can't have 2 fate actions in"
 810                                           " same flow");
 811         if (attr->egress)
 812                 return rte_flow_error_set(error, ENOTSUP,
 813                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 814                                           "drop action not supported for "
 815                                           "egress");
 816         return 0;
 817 }
 818
 819 /*
 820  * Validate the queue action.
 821  *
 822  * @param[in] action
 823  *   Pointer to the queue action.
 824  * @param[in] action_flags
 825  *   Bit-fields that holds the actions detected until now.
 826  * @param[in] dev
 827  *   Pointer to the Ethernet device structure.
 828  * @param[in] attr
 829  *   Attributes of flow that includes this action.
 830  * @param[out] error
 831  *   Pointer to error structure.
 832  *
 833  * @return
 834  *   0 on success, a negative errno value otherwise and rte_errno is set.
 835  */
 836 int
 837 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
 838                                 uint64_t action_flags,
 839                                 struct rte_eth_dev *dev,
 840                                 const struct rte_flow_attr *attr,
 841                                 struct rte_flow_error *error)
 842 {
 843         struct mlx5_priv *priv = dev->data->dev_private;
 844         const struct rte_flow_action_queue *queue = action->conf;
 845
 846         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 847                 return rte_flow_error_set(error, EINVAL,
 848                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 849                                           "can't have 2 fate actions in"
 850                                           " same flow");
 851         if (!priv->rxqs_n)
 852                 return rte_flow_error_set(error, EINVAL,
 853                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 854                                           NULL, "No Rx queues configured");
 855         if (queue->index >= priv->rxqs_n)
 856                 return rte_flow_error_set(error, EINVAL,
 857                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 858                                           &queue->index,
 859                                           "queue index out of range");
 860         if (!(*priv->rxqs)[queue->index])
 861                 return rte_flow_error_set(error, EINVAL,
 862                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 863                                           &queue->index,
 864                                           "queue is not configured");
 865         if (attr->egress)
 866                 return rte_flow_error_set(error, ENOTSUP,
 867                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 868                                           "queue action not supported for "
 869                                           "egress");
 870         return 0;
 871 }
 872
 873 /*
 874  * Validate the rss action.
 875  *
 876  * @param[in] action
 877  *   Pointer to the queue action.
 878  * @param[in] action_flags
 879  *   Bit-fields that holds the actions detected until now.
 880  * @param[in] dev
 881  *   Pointer to the Ethernet device structure.
 882  * @param[in] attr
 883  *   Attributes of flow that includes this action.
 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                               struct rte_flow_error *error)
 896 {
 897         struct mlx5_priv *priv = dev->data->dev_private;
 898         const struct rte_flow_action_rss *rss = action->conf;
 899         unsigned int i;
 900
 901         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 902                 return rte_flow_error_set(error, EINVAL,
 903                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 904                                           "can't have 2 fate actions"
 905                                           " in same flow");
 906         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
 907             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
 908                 return rte_flow_error_set(error, ENOTSUP,
 909                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 910                                           &rss->func,
 911                                           "RSS hash function not supported");
 912 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 913         if (rss->level > 2)
 914 #else
 915         if (rss->level > 1)
 916 #endif
 917                 return rte_flow_error_set(error, ENOTSUP,
 918                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 919                                           &rss->level,
 920                                           "tunnel RSS is not supported");
 921         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
 922         if (rss->key_len == 0 && rss->key != NULL)
 923                 return rte_flow_error_set(error, ENOTSUP,
 924                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 925                                           &rss->key_len,
 926                                           "RSS hash key length 0");
 927         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
 928                 return rte_flow_error_set(error, ENOTSUP,
 929                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 930                                           &rss->key_len,
 931                                           "RSS hash key too small");
 932         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
 933                 return rte_flow_error_set(error, ENOTSUP,
 934                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 935                                           &rss->key_len,
 936                                           "RSS hash key too large");
 937         if (rss->queue_num > priv->config.ind_table_max_size)
 938                 return rte_flow_error_set(error, ENOTSUP,
 939                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 940                                           &rss->queue_num,
 941                                           "number of queues too large");
 942         if (rss->types & MLX5_RSS_HF_MASK)
 943                 return rte_flow_error_set(error, ENOTSUP,
 944                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 945                                           &rss->types,
 946                                           "some RSS protocols are not"
 947                                           " supported");
 948         if (!priv->rxqs_n)
 949                 return rte_flow_error_set(error, EINVAL,
 950                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 951                                           NULL, "No Rx queues configured");
 952         if (!rss->queue_num)
 953                 return rte_flow_error_set(error, EINVAL,
 954                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 955                                           NULL, "No queues configured");
 956         for (i = 0; i != rss->queue_num; ++i) {
 957                 if (!(*priv->rxqs)[rss->queue[i]])
 958                         return rte_flow_error_set
 959                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 960                                  &rss->queue[i], "queue is not configured");
 961         }
 962         if (attr->egress)
 963                 return rte_flow_error_set(error, ENOTSUP,
 964                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 965                                           "rss action not supported for "
 966                                           "egress");
 967         return 0;
 968 }
 969
 970 /*
 971  * Validate the count action.
 972  *
 973  * @param[in] dev
 974  *   Pointer to the Ethernet device structure.
 975  * @param[in] attr
 976  *   Attributes of flow that includes this action.
 977  * @param[out] error
 978  *   Pointer to error structure.
 979  *
 980  * @return
 981  *   0 on success, a negative errno value otherwise and rte_errno is set.
 982  */
 983 int
 984 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
 985                                 const struct rte_flow_attr *attr,
 986                                 struct rte_flow_error *error)
 987 {
 988         if (attr->egress)
 989                 return rte_flow_error_set(error, ENOTSUP,
 990                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 991                                           "count action not supported for "
 992                                           "egress");
 993         return 0;
 994 }
 995
 996 /**
 997  * Verify the @p attributes will be correctly understood by the NIC and store
 998  * them in the @p flow if everything is correct.
 999  *
1000  * @param[in] dev
1001  *   Pointer to the Ethernet device structure.
1002  * @param[in] attributes
1003  *   Pointer to flow attributes
1004  * @param[out] error
1005  *   Pointer to error structure.
1006  *
1007  * @return
1008  *   0 on success, a negative errno value otherwise and rte_errno is set.
1009  */
1010 int
1011 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1012                               const struct rte_flow_attr *attributes,
1013                               struct rte_flow_error *error)
1014 {
1015         struct mlx5_priv *priv = dev->data->dev_private;
1016         uint32_t priority_max = priv->config.flow_prio - 1;
1017
1018         if (attributes->group)
1019                 return rte_flow_error_set(error, ENOTSUP,
1020                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1021                                           NULL, "groups is not supported");
1022         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1023             attributes->priority >= priority_max)
1024                 return rte_flow_error_set(error, ENOTSUP,
1025                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1026                                           NULL, "priority out of range");
1027         if (attributes->egress)
1028                 return rte_flow_error_set(error, ENOTSUP,
1029                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1030                                           "egress is not supported");
1031         if (attributes->transfer)
1032                 return rte_flow_error_set(error, ENOTSUP,
1033                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1034                                           NULL, "transfer is not supported");
1035         if (!attributes->ingress)
1036                 return rte_flow_error_set(error, EINVAL,
1037                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1038                                           NULL,
1039                                           "ingress attribute is mandatory");
1040         return 0;
1041 }
1042
1043 /**
1044  * Validate Ethernet item.
1045  *
1046  * @param[in] item
1047  *   Item specification.
1048  * @param[in] item_flags
1049  *   Bit-fields that holds the items detected until now.
1050  * @param[out] error
1051  *   Pointer to error structure.
1052  *
1053  * @return
1054  *   0 on success, a negative errno value otherwise and rte_errno is set.
1055  */
1056 int
1057 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1058                             uint64_t item_flags,
1059                             struct rte_flow_error *error)
1060 {
1061         const struct rte_flow_item_eth *mask = item->mask;
1062         const struct rte_flow_item_eth nic_mask = {
1063                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1064                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1065                 .type = RTE_BE16(0xffff),
1066         };
1067         int ret;
1068         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1069         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1070                                        MLX5_FLOW_LAYER_OUTER_L2;
1071
1072         if (item_flags & ethm)
1073                 return rte_flow_error_set(error, ENOTSUP,
1074                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1075                                           "multiple L2 layers not supported");
1076         if (!mask)
1077                 mask = &rte_flow_item_eth_mask;
1078         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1079                                         (const uint8_t *)&nic_mask,
1080                                         sizeof(struct rte_flow_item_eth),
1081                                         error);
1082         return ret;
1083 }
1084
1085 /**
1086  * Validate VLAN item.
1087  *
1088  * @param[in] item
1089  *   Item specification.
1090  * @param[in] item_flags
1091  *   Bit-fields that holds the items detected until now.
1092  * @param[out] error
1093  *   Pointer to error structure.
1094  *
1095  * @return
1096  *   0 on success, a negative errno value otherwise and rte_errno is set.
1097  */
1098 int
1099 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1100                              uint64_t item_flags,
1101                              struct rte_flow_error *error)
1102 {
1103         const struct rte_flow_item_vlan *spec = item->spec;
1104         const struct rte_flow_item_vlan *mask = item->mask;
1105         const struct rte_flow_item_vlan nic_mask = {
1106                 .tci = RTE_BE16(0x0fff),
1107                 .inner_type = RTE_BE16(0xffff),
1108         };
1109         uint16_t vlan_tag = 0;
1110         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1111         int ret;
1112         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1113                                         MLX5_FLOW_LAYER_INNER_L4) :
1114                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1115                                         MLX5_FLOW_LAYER_OUTER_L4);
1116         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1117                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1118
1119         if (item_flags & vlanm)
1120                 return rte_flow_error_set(error, EINVAL,
1121                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1122                                           "multiple VLAN layers not supported");
1123         else if ((item_flags & l34m) != 0)
1124                 return rte_flow_error_set(error, EINVAL,
1125                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1126                                           "L2 layer cannot follow L3/L4 layer");
1127         if (!mask)
1128                 mask = &rte_flow_item_vlan_mask;
1129         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1130                                         (const uint8_t *)&nic_mask,
1131                                         sizeof(struct rte_flow_item_vlan),
1132                                         error);
1133         if (ret)
1134                 return ret;
1135         if (spec) {
1136                 vlan_tag = spec->tci;
1137                 vlan_tag &= mask->tci;
1138         }
1139         /*
1140          * From verbs perspective an empty VLAN is equivalent
1141          * to a packet without VLAN layer.
1142          */
1143         if (!vlan_tag)
1144                 return rte_flow_error_set(error, EINVAL,
1145                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1146                                           item->spec,
1147                                           "VLAN cannot be empty");
1148         return 0;
1149 }
1150
1151 /**
1152  * Validate IPV4 item.
1153  *
1154  * @param[in] item
1155  *   Item specification.
1156  * @param[in] item_flags
1157  *   Bit-fields that holds the items detected until now.
1158  * @param[in] acc_mask
1159  *   Acceptable mask, if NULL default internal default mask
1160  *   will be used to check whether item fields are supported.
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_ipv4(const struct rte_flow_item *item,
1169                              uint64_t item_flags,
1170                              const struct rte_flow_item_ipv4 *acc_mask,
1171                              struct rte_flow_error *error)
1172 {
1173         const struct rte_flow_item_ipv4 *mask = item->mask;
1174         const struct rte_flow_item_ipv4 nic_mask = {
1175                 .hdr = {
1176                         .src_addr = RTE_BE32(0xffffffff),
1177                         .dst_addr = RTE_BE32(0xffffffff),
1178                         .type_of_service = 0xff,
1179                         .next_proto_id = 0xff,
1180                 },
1181         };
1182         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1183         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1184                                       MLX5_FLOW_LAYER_OUTER_L3;
1185         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1186                                       MLX5_FLOW_LAYER_OUTER_L4;
1187         int ret;
1188
1189         if (item_flags & l3m)
1190                 return rte_flow_error_set(error, ENOTSUP,
1191                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1192                                           "multiple L3 layers not supported");
1193         else if (item_flags & l4m)
1194                 return rte_flow_error_set(error, EINVAL,
1195                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1196                                           "L3 cannot follow an L4 layer.");
1197         if (!mask)
1198                 mask = &rte_flow_item_ipv4_mask;
1199         else if (mask->hdr.next_proto_id != 0 &&
1200                  mask->hdr.next_proto_id != 0xff)
1201                 return rte_flow_error_set(error, EINVAL,
1202                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1203                                           "partial mask is not supported"
1204                                           " for protocol");
1205         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1206                                         acc_mask ? (const uint8_t *)acc_mask
1207                                                  : (const uint8_t *)&nic_mask,
1208                                         sizeof(struct rte_flow_item_ipv4),
1209                                         error);
1210         if (ret < 0)
1211                 return ret;
1212         return 0;
1213 }
1214
1215 /**
1216  * Validate IPV6 item.
1217  *
1218  * @param[in] item
1219  *   Item specification.
1220  * @param[in] item_flags
1221  *   Bit-fields that holds the items detected until now.
1222  * @param[in] acc_mask
1223  *   Acceptable mask, if NULL default internal default mask
1224  *   will be used to check whether item fields are supported.
1225  * @param[out] error
1226  *   Pointer to error structure.
1227  *
1228  * @return
1229  *   0 on success, a negative errno value otherwise and rte_errno is set.
1230  */
1231 int
1232 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1233                              uint64_t item_flags,
1234                              const struct rte_flow_item_ipv6 *acc_mask,
1235                              struct rte_flow_error *error)
1236 {
1237         const struct rte_flow_item_ipv6 *mask = item->mask;
1238         const struct rte_flow_item_ipv6 nic_mask = {
1239                 .hdr = {
1240                         .src_addr =
1241                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1242                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1243                         .dst_addr =
1244                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1245                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1246                         .vtc_flow = RTE_BE32(0xffffffff),
1247                         .proto = 0xff,
1248                         .hop_limits = 0xff,
1249                 },
1250         };
1251         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1252         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1253                                       MLX5_FLOW_LAYER_OUTER_L3;
1254         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1255                                       MLX5_FLOW_LAYER_OUTER_L4;
1256         int ret;
1257
1258         if (item_flags & l3m)
1259                 return rte_flow_error_set(error, ENOTSUP,
1260                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1261                                           "multiple L3 layers not supported");
1262         else if (item_flags & l4m)
1263                 return rte_flow_error_set(error, EINVAL,
1264                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1265                                           "L3 cannot follow an L4 layer.");
1266         if (!mask)
1267                 mask = &rte_flow_item_ipv6_mask;
1268         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1269                                         acc_mask ? (const uint8_t *)acc_mask
1270                                                  : (const uint8_t *)&nic_mask,
1271                                         sizeof(struct rte_flow_item_ipv6),
1272                                         error);
1273         if (ret < 0)
1274                 return ret;
1275         return 0;
1276 }
1277
1278 /**
1279  * Validate UDP item.
1280  *
1281  * @param[in] item
1282  *   Item specification.
1283  * @param[in] item_flags
1284  *   Bit-fields that holds the items detected until now.
1285  * @param[in] target_protocol
1286  *   The next protocol in the previous item.
1287  * @param[in] flow_mask
1288  *   mlx5 flow-specific (TCF, DV, verbs, etc.) supported header fields mask.
1289  * @param[out] error
1290  *   Pointer to error structure.
1291  *
1292  * @return
1293  *   0 on success, a negative errno value otherwise and rte_errno is set.
1294  */
1295 int
1296 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1297                             uint64_t item_flags,
1298                             uint8_t target_protocol,
1299                             struct rte_flow_error *error)
1300 {
1301         const struct rte_flow_item_udp *mask = item->mask;
1302         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1303         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1304                                       MLX5_FLOW_LAYER_OUTER_L3;
1305         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1306                                       MLX5_FLOW_LAYER_OUTER_L4;
1307         int ret;
1308
1309         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1310                 return rte_flow_error_set(error, EINVAL,
1311                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1312                                           "protocol filtering not compatible"
1313                                           " with UDP layer");
1314         if (!(item_flags & l3m))
1315                 return rte_flow_error_set(error, EINVAL,
1316                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1317                                           "L3 is mandatory to filter on L4");
1318         if (item_flags & l4m)
1319                 return rte_flow_error_set(error, EINVAL,
1320                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1321                                           "multiple L4 layers not supported");
1322         if (!mask)
1323                 mask = &rte_flow_item_udp_mask;
1324         ret = mlx5_flow_item_acceptable
1325                 (item, (const uint8_t *)mask,
1326                  (const uint8_t *)&rte_flow_item_udp_mask,
1327                  sizeof(struct rte_flow_item_udp), error);
1328         if (ret < 0)
1329                 return ret;
1330         return 0;
1331 }
1332
1333 /**
1334  * Validate TCP item.
1335  *
1336  * @param[in] item
1337  *   Item specification.
1338  * @param[in] item_flags
1339  *   Bit-fields that holds the items detected until now.
1340  * @param[in] target_protocol
1341  *   The next protocol in the previous item.
1342  * @param[out] error
1343  *   Pointer to error structure.
1344  *
1345  * @return
1346  *   0 on success, a negative errno value otherwise and rte_errno is set.
1347  */
1348 int
1349 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1350                             uint64_t item_flags,
1351                             uint8_t target_protocol,
1352                             const struct rte_flow_item_tcp *flow_mask,
1353                             struct rte_flow_error *error)
1354 {
1355         const struct rte_flow_item_tcp *mask = item->mask;
1356         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1357         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1358                                       MLX5_FLOW_LAYER_OUTER_L3;
1359         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1360                                       MLX5_FLOW_LAYER_OUTER_L4;
1361         int ret;
1362
1363         assert(flow_mask);
1364         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1365                 return rte_flow_error_set(error, EINVAL,
1366                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1367                                           "protocol filtering not compatible"
1368                                           " with TCP layer");
1369         if (!(item_flags & l3m))
1370                 return rte_flow_error_set(error, EINVAL,
1371                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1372                                           "L3 is mandatory to filter on L4");
1373         if (item_flags & l4m)
1374                 return rte_flow_error_set(error, EINVAL,
1375                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1376                                           "multiple L4 layers not supported");
1377         if (!mask)
1378                 mask = &rte_flow_item_tcp_mask;
1379         ret = mlx5_flow_item_acceptable
1380                 (item, (const uint8_t *)mask,
1381                  (const uint8_t *)flow_mask,
1382                  sizeof(struct rte_flow_item_tcp), error);
1383         if (ret < 0)
1384                 return ret;
1385         return 0;
1386 }
1387
1388 /**
1389  * Validate VXLAN item.
1390  *
1391  * @param[in] item
1392  *   Item specification.
1393  * @param[in] item_flags
1394  *   Bit-fields that holds the items detected until now.
1395  * @param[in] target_protocol
1396  *   The next protocol in the previous item.
1397  * @param[out] error
1398  *   Pointer to error structure.
1399  *
1400  * @return
1401  *   0 on success, a negative errno value otherwise and rte_errno is set.
1402  */
1403 int
1404 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1405                               uint64_t item_flags,
1406                               struct rte_flow_error *error)
1407 {
1408         const struct rte_flow_item_vxlan *spec = item->spec;
1409         const struct rte_flow_item_vxlan *mask = item->mask;
1410         int ret;
1411         union vni {
1412                 uint32_t vlan_id;
1413                 uint8_t vni[4];
1414         } id = { .vlan_id = 0, };
1415         uint32_t vlan_id = 0;
1416
1417
1418         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1419                 return rte_flow_error_set(error, ENOTSUP,
1420                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1421                                           "multiple tunnel layers not"
1422                                           " supported");
1423         /*
1424          * Verify only UDPv4 is present as defined in
1425          * https://tools.ietf.org/html/rfc7348
1426          */
1427         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1428                 return rte_flow_error_set(error, EINVAL,
1429                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1430                                           "no outer UDP layer found");
1431         if (!mask)
1432                 mask = &rte_flow_item_vxlan_mask;
1433         ret = mlx5_flow_item_acceptable
1434                 (item, (const uint8_t *)mask,
1435                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1436                  sizeof(struct rte_flow_item_vxlan),
1437                  error);
1438         if (ret < 0)
1439                 return ret;
1440         if (spec) {
1441                 memcpy(&id.vni[1], spec->vni, 3);
1442                 vlan_id = id.vlan_id;
1443                 memcpy(&id.vni[1], mask->vni, 3);
1444                 vlan_id &= id.vlan_id;
1445         }
1446         /*
1447          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1448          * only this layer is defined in the Verbs specification it is
1449          * interpreted as wildcard and all packets will match this
1450          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1451          * udp), all packets matching the layers before will also
1452          * match this rule.  To avoid such situation, VNI 0 is
1453          * currently refused.
1454          */
1455         if (!vlan_id)
1456                 return rte_flow_error_set(error, ENOTSUP,
1457                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1458                                           "VXLAN vni cannot be 0");
1459         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1460                 return rte_flow_error_set(error, ENOTSUP,
1461                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1462                                           "VXLAN tunnel must be fully defined");
1463         return 0;
1464 }
1465
1466 /**
1467  * Validate VXLAN_GPE item.
1468  *
1469  * @param[in] item
1470  *   Item specification.
1471  * @param[in] item_flags
1472  *   Bit-fields that holds the items detected until now.
1473  * @param[in] priv
1474  *   Pointer to the private data structure.
1475  * @param[in] target_protocol
1476  *   The next protocol in the previous item.
1477  * @param[out] error
1478  *   Pointer to error structure.
1479  *
1480  * @return
1481  *   0 on success, a negative errno value otherwise and rte_errno is set.
1482  */
1483 int
1484 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1485                                   uint64_t item_flags,
1486                                   struct rte_eth_dev *dev,
1487                                   struct rte_flow_error *error)
1488 {
1489         struct mlx5_priv *priv = dev->data->dev_private;
1490         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1491         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1492         int ret;
1493         union vni {
1494                 uint32_t vlan_id;
1495                 uint8_t vni[4];
1496         } id = { .vlan_id = 0, };
1497         uint32_t vlan_id = 0;
1498
1499         if (!priv->config.l3_vxlan_en)
1500                 return rte_flow_error_set(error, ENOTSUP,
1501                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1502                                           "L3 VXLAN is not enabled by device"
1503                                           " parameter and/or not configured in"
1504                                           " firmware");
1505         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1506                 return rte_flow_error_set(error, ENOTSUP,
1507                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1508                                           "multiple tunnel layers not"
1509                                           " supported");
1510         /*
1511          * Verify only UDPv4 is present as defined in
1512          * https://tools.ietf.org/html/rfc7348
1513          */
1514         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1515                 return rte_flow_error_set(error, EINVAL,
1516                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1517                                           "no outer UDP layer found");
1518         if (!mask)
1519                 mask = &rte_flow_item_vxlan_gpe_mask;
1520         ret = mlx5_flow_item_acceptable
1521                 (item, (const uint8_t *)mask,
1522                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1523                  sizeof(struct rte_flow_item_vxlan_gpe),
1524                  error);
1525         if (ret < 0)
1526                 return ret;
1527         if (spec) {
1528                 if (spec->protocol)
1529                         return rte_flow_error_set(error, ENOTSUP,
1530                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1531                                                   item,
1532                                                   "VxLAN-GPE protocol"
1533                                                   " not supported");
1534                 memcpy(&id.vni[1], spec->vni, 3);
1535                 vlan_id = id.vlan_id;
1536                 memcpy(&id.vni[1], mask->vni, 3);
1537                 vlan_id &= id.vlan_id;
1538         }
1539         /*
1540          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1541          * layer is defined in the Verbs specification it is interpreted as
1542          * wildcard and all packets will match this rule, if it follows a full
1543          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1544          * before will also match this rule.  To avoid such situation, VNI 0
1545          * is currently refused.
1546          */
1547         if (!vlan_id)
1548                 return rte_flow_error_set(error, ENOTSUP,
1549                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1550                                           "VXLAN-GPE vni cannot be 0");
1551         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1552                 return rte_flow_error_set(error, ENOTSUP,
1553                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1554                                           "VXLAN-GPE tunnel must be fully"
1555                                           " defined");
1556         return 0;
1557 }
1558
1559 /**
1560  * Validate GRE item.
1561  *
1562  * @param[in] item
1563  *   Item specification.
1564  * @param[in] item_flags
1565  *   Bit flags to mark detected items.
1566  * @param[in] target_protocol
1567  *   The next protocol in the previous item.
1568  * @param[out] error
1569  *   Pointer to error structure.
1570  *
1571  * @return
1572  *   0 on success, a negative errno value otherwise and rte_errno is set.
1573  */
1574 int
1575 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
1576                             uint64_t item_flags,
1577                             uint8_t target_protocol,
1578                             struct rte_flow_error *error)
1579 {
1580         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
1581         const struct rte_flow_item_gre *mask = item->mask;
1582         int ret;
1583
1584         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
1585                 return rte_flow_error_set(error, EINVAL,
1586                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1587                                           "protocol filtering not compatible"
1588                                           " with this GRE layer");
1589         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1590                 return rte_flow_error_set(error, ENOTSUP,
1591                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1592                                           "multiple tunnel layers not"
1593                                           " supported");
1594         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
1595                 return rte_flow_error_set(error, ENOTSUP,
1596                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1597                                           "L3 Layer is missing");
1598         if (!mask)
1599                 mask = &rte_flow_item_gre_mask;
1600         ret = mlx5_flow_item_acceptable
1601                 (item, (const uint8_t *)mask,
1602                  (const uint8_t *)&rte_flow_item_gre_mask,
1603                  sizeof(struct rte_flow_item_gre), error);
1604         if (ret < 0)
1605                 return ret;
1606 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1607         if (spec && (spec->protocol & mask->protocol))
1608                 return rte_flow_error_set(error, ENOTSUP,
1609                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1610                                           "without MPLS support the"
1611                                           " specification cannot be used for"
1612                                           " filtering");
1613 #endif
1614         return 0;
1615 }
1616
1617 /**
1618  * Validate MPLS item.
1619  *
1620  * @param[in] dev
1621  *   Pointer to the rte_eth_dev structure.
1622  * @param[in] item
1623  *   Item specification.
1624  * @param[in] item_flags
1625  *   Bit-fields that holds the items detected until now.
1626  * @param[in] prev_layer
1627  *   The protocol layer indicated in previous item.
1628  * @param[out] error
1629  *   Pointer to error structure.
1630  *
1631  * @return
1632  *   0 on success, a negative errno value otherwise and rte_errno is set.
1633  */
1634 int
1635 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
1636                              const struct rte_flow_item *item __rte_unused,
1637                              uint64_t item_flags __rte_unused,
1638                              uint64_t prev_layer __rte_unused,
1639                              struct rte_flow_error *error)
1640 {
1641 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1642         const struct rte_flow_item_mpls *mask = item->mask;
1643         struct mlx5_priv *priv = dev->data->dev_private;
1644         int ret;
1645
1646         if (!priv->config.mpls_en)
1647                 return rte_flow_error_set(error, ENOTSUP,
1648                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1649                                           "MPLS not supported or"
1650                                           " disabled in firmware"
1651                                           " configuration.");
1652         /* MPLS over IP, UDP, GRE is allowed */
1653         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
1654                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
1655                             MLX5_FLOW_LAYER_GRE)))
1656                 return rte_flow_error_set(error, EINVAL,
1657                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1658                                           "protocol filtering not compatible"
1659                                           " with MPLS layer");
1660         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
1661         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
1662             !(item_flags & MLX5_FLOW_LAYER_GRE))
1663                 return rte_flow_error_set(error, ENOTSUP,
1664                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1665                                           "multiple tunnel layers not"
1666                                           " supported");
1667         if (!mask)
1668                 mask = &rte_flow_item_mpls_mask;
1669         ret = mlx5_flow_item_acceptable
1670                 (item, (const uint8_t *)mask,
1671                  (const uint8_t *)&rte_flow_item_mpls_mask,
1672                  sizeof(struct rte_flow_item_mpls), error);
1673         if (ret < 0)
1674                 return ret;
1675         return 0;
1676 #endif
1677         return rte_flow_error_set(error, ENOTSUP,
1678                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
1679                                   "MPLS is not supported by Verbs, please"
1680                                   " update.");
1681 }
1682
1683 static int
1684 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
1685                    const struct rte_flow_attr *attr __rte_unused,
1686                    const struct rte_flow_item items[] __rte_unused,
1687                    const struct rte_flow_action actions[] __rte_unused,
1688                    struct rte_flow_error *error __rte_unused)
1689 {
1690         rte_errno = ENOTSUP;
1691         return -rte_errno;
1692 }
1693
1694 static struct mlx5_flow *
1695 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
1696                   const struct rte_flow_item items[] __rte_unused,
1697                   const struct rte_flow_action actions[] __rte_unused,
1698                   struct rte_flow_error *error __rte_unused)
1699 {
1700         rte_errno = ENOTSUP;
1701         return NULL;
1702 }
1703
1704 static int
1705 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
1706                     struct mlx5_flow *dev_flow __rte_unused,
1707                     const struct rte_flow_attr *attr __rte_unused,
1708                     const struct rte_flow_item items[] __rte_unused,
1709                     const struct rte_flow_action actions[] __rte_unused,
1710                     struct rte_flow_error *error __rte_unused)
1711 {
1712         rte_errno = ENOTSUP;
1713         return -rte_errno;
1714 }
1715
1716 static int
1717 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
1718                 struct rte_flow *flow __rte_unused,
1719                 struct rte_flow_error *error __rte_unused)
1720 {
1721         rte_errno = ENOTSUP;
1722         return -rte_errno;
1723 }
1724
1725 static void
1726 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
1727                  struct rte_flow *flow __rte_unused)
1728 {
1729 }
1730
1731 static void
1732 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
1733                   struct rte_flow *flow __rte_unused)
1734 {
1735 }
1736
1737 static int
1738 flow_null_query(struct rte_eth_dev *dev __rte_unused,
1739                 struct rte_flow *flow __rte_unused,
1740                 const struct rte_flow_action *actions __rte_unused,
1741                 void *data __rte_unused,
1742                 struct rte_flow_error *error __rte_unused)
1743 {
1744         rte_errno = ENOTSUP;
1745         return -rte_errno;
1746 }
1747
1748 /* Void driver to protect from null pointer reference. */
1749 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
1750         .validate = flow_null_validate,
1751         .prepare = flow_null_prepare,
1752         .translate = flow_null_translate,
1753         .apply = flow_null_apply,
1754         .remove = flow_null_remove,
1755         .destroy = flow_null_destroy,
1756         .query = flow_null_query,
1757 };
1758
1759 /**
1760  * Select flow driver type according to flow attributes and device
1761  * configuration.
1762  *
1763  * @param[in] dev
1764  *   Pointer to the dev structure.
1765  * @param[in] attr
1766  *   Pointer to the flow attributes.
1767  *
1768  * @return
1769  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
1770  */
1771 static enum mlx5_flow_drv_type
1772 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
1773 {
1774         struct mlx5_priv *priv = dev->data->dev_private;
1775         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
1776
1777         if (attr->transfer)
1778                 type = MLX5_FLOW_TYPE_TCF;
1779         else
1780                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
1781                                                  MLX5_FLOW_TYPE_VERBS;
1782         return type;
1783 }
1784
1785 #define flow_get_drv_ops(type) flow_drv_ops[type]
1786
1787 /**
1788  * Flow driver validation API. This abstracts calling driver specific functions.
1789  * The type of flow driver is determined according to flow attributes.
1790  *
1791  * @param[in] dev
1792  *   Pointer to the dev structure.
1793  * @param[in] attr
1794  *   Pointer to the flow attributes.
1795  * @param[in] items
1796  *   Pointer to the list of items.
1797  * @param[in] actions
1798  *   Pointer to the list of actions.
1799  * @param[out] error
1800  *   Pointer to the error structure.
1801  *
1802  * @return
1803  *   0 on success, a negative errno value otherwise and rte_errno is set.
1804  */
1805 static inline int
1806 flow_drv_validate(struct rte_eth_dev *dev,
1807                   const struct rte_flow_attr *attr,
1808                   const struct rte_flow_item items[],
1809                   const struct rte_flow_action actions[],
1810                   struct rte_flow_error *error)
1811 {
1812         const struct mlx5_flow_driver_ops *fops;
1813         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
1814
1815         fops = flow_get_drv_ops(type);
1816         return fops->validate(dev, attr, items, actions, error);
1817 }
1818
1819 /**
1820  * Flow driver preparation API. This abstracts calling driver specific
1821  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1822  * calculates the size of memory required for device flow, allocates the memory,
1823  * initializes the device flow and returns the pointer.
1824  *
1825  * @note
1826  *   This function initializes device flow structure such as dv, tcf or verbs in
1827  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
1828  *   rest. For example, adding returning device flow to flow->dev_flow list and
1829  *   setting backward reference to the flow should be done out of this function.
1830  *   layers field is not filled either.
1831  *
1832  * @param[in] attr
1833  *   Pointer to the flow attributes.
1834  * @param[in] items
1835  *   Pointer to the list of items.
1836  * @param[in] actions
1837  *   Pointer to the list of actions.
1838  * @param[out] error
1839  *   Pointer to the error structure.
1840  *
1841  * @return
1842  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
1843  */
1844 static inline struct mlx5_flow *
1845 flow_drv_prepare(const struct rte_flow *flow,
1846                  const struct rte_flow_attr *attr,
1847                  const struct rte_flow_item items[],
1848                  const struct rte_flow_action actions[],
1849                  struct rte_flow_error *error)
1850 {
1851         const struct mlx5_flow_driver_ops *fops;
1852         enum mlx5_flow_drv_type type = flow->drv_type;
1853
1854         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1855         fops = flow_get_drv_ops(type);
1856         return fops->prepare(attr, items, actions, error);
1857 }
1858
1859 /**
1860  * Flow driver translation API. This abstracts calling driver specific
1861  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1862  * translates a generic flow into a driver flow. flow_drv_prepare() must
1863  * precede.
1864  *
1865  * @note
1866  *   dev_flow->layers could be filled as a result of parsing during translation
1867  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
1868  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
1869  *   flow->actions could be overwritten even though all the expanded dev_flows
1870  *   have the same actions.
1871  *
1872  * @param[in] dev
1873  *   Pointer to the rte dev structure.
1874  * @param[in, out] dev_flow
1875  *   Pointer to the mlx5 flow.
1876  * @param[in] attr
1877  *   Pointer to the flow attributes.
1878  * @param[in] items
1879  *   Pointer to the list of items.
1880  * @param[in] actions
1881  *   Pointer to the list of actions.
1882  * @param[out] error
1883  *   Pointer to the error structure.
1884  *
1885  * @return
1886  *   0 on success, a negative errno value otherwise and rte_errno is set.
1887  */
1888 static inline int
1889 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
1890                    const struct rte_flow_attr *attr,
1891                    const struct rte_flow_item items[],
1892                    const struct rte_flow_action actions[],
1893                    struct rte_flow_error *error)
1894 {
1895         const struct mlx5_flow_driver_ops *fops;
1896         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
1897
1898         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1899         fops = flow_get_drv_ops(type);
1900         return fops->translate(dev, dev_flow, attr, items, actions, error);
1901 }
1902
1903 /**
1904  * Flow driver apply API. This abstracts calling driver specific functions.
1905  * Parent flow (rte_flow) should have driver type (drv_type). It applies
1906  * translated driver flows on to device. flow_drv_translate() must precede.
1907  *
1908  * @param[in] dev
1909  *   Pointer to Ethernet device structure.
1910  * @param[in, out] flow
1911  *   Pointer to flow structure.
1912  * @param[out] error
1913  *   Pointer to error structure.
1914  *
1915  * @return
1916  *   0 on success, a negative errno value otherwise and rte_errno is set.
1917  */
1918 static inline int
1919 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
1920                struct rte_flow_error *error)
1921 {
1922         const struct mlx5_flow_driver_ops *fops;
1923         enum mlx5_flow_drv_type type = flow->drv_type;
1924
1925         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1926         fops = flow_get_drv_ops(type);
1927         return fops->apply(dev, flow, error);
1928 }
1929
1930 /**
1931  * Flow driver remove API. This abstracts calling driver specific functions.
1932  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1933  * on device. All the resources of the flow should be freed by calling
1934  * flow_drv_destroy().
1935  *
1936  * @param[in] dev
1937  *   Pointer to Ethernet device.
1938  * @param[in, out] flow
1939  *   Pointer to flow structure.
1940  */
1941 static inline void
1942 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
1943 {
1944         const struct mlx5_flow_driver_ops *fops;
1945         enum mlx5_flow_drv_type type = flow->drv_type;
1946
1947         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1948         fops = flow_get_drv_ops(type);
1949         fops->remove(dev, flow);
1950 }
1951
1952 /**
1953  * Flow driver destroy API. This abstracts calling driver specific functions.
1954  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1955  * on device and releases resources of the flow.
1956  *
1957  * @param[in] dev
1958  *   Pointer to Ethernet device.
1959  * @param[in, out] flow
1960  *   Pointer to flow structure.
1961  */
1962 static inline void
1963 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
1964 {
1965         const struct mlx5_flow_driver_ops *fops;
1966         enum mlx5_flow_drv_type type = flow->drv_type;
1967
1968         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1969         fops = flow_get_drv_ops(type);
1970         fops->destroy(dev, flow);
1971 }
1972
1973 /**
1974  * Validate a flow supported by the NIC.
1975  *
1976  * @see rte_flow_validate()
1977  * @see rte_flow_ops
1978  */
1979 int
1980 mlx5_flow_validate(struct rte_eth_dev *dev,
1981                    const struct rte_flow_attr *attr,
1982                    const struct rte_flow_item items[],
1983                    const struct rte_flow_action actions[],
1984                    struct rte_flow_error *error)
1985 {
1986         int ret;
1987
1988         ret = flow_drv_validate(dev, attr, items, actions, error);
1989         if (ret < 0)
1990                 return ret;
1991         return 0;
1992 }
1993
1994 /**
1995  * Get RSS action from the action list.
1996  *
1997  * @param[in] actions
1998  *   Pointer to the list of actions.
1999  *
2000  * @return
2001  *   Pointer to the RSS action if exist, else return NULL.
2002  */
2003 static const struct rte_flow_action_rss*
2004 flow_get_rss_action(const struct rte_flow_action actions[])
2005 {
2006         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2007                 switch (actions->type) {
2008                 case RTE_FLOW_ACTION_TYPE_RSS:
2009                         return (const struct rte_flow_action_rss *)
2010                                actions->conf;
2011                 default:
2012                         break;
2013                 }
2014         }
2015         return NULL;
2016 }
2017
2018 static unsigned int
2019 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2020 {
2021         const struct rte_flow_item *item;
2022         unsigned int has_vlan = 0;
2023
2024         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2025                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2026                         has_vlan = 1;
2027                         break;
2028                 }
2029         }
2030         if (has_vlan)
2031                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2032                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2033         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2034                                MLX5_EXPANSION_ROOT_OUTER;
2035 }
2036
2037 /**
2038  * Create a flow and add it to @p list.
2039  *
2040  * @param dev
2041  *   Pointer to Ethernet device.
2042  * @param list
2043  *   Pointer to a TAILQ flow list.
2044  * @param[in] attr
2045  *   Flow rule attributes.
2046  * @param[in] items
2047  *   Pattern specification (list terminated by the END pattern item).
2048  * @param[in] actions
2049  *   Associated actions (list terminated by the END action).
2050  * @param[out] error
2051  *   Perform verbose error reporting if not NULL.
2052  *
2053  * @return
2054  *   A flow on success, NULL otherwise and rte_errno is set.
2055  */
2056 static struct rte_flow *
2057 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2058                  const struct rte_flow_attr *attr,
2059                  const struct rte_flow_item items[],
2060                  const struct rte_flow_action actions[],
2061                  struct rte_flow_error *error)
2062 {
2063         struct rte_flow *flow = NULL;
2064         struct mlx5_flow *dev_flow;
2065         const struct rte_flow_action_rss *rss;
2066         union {
2067                 struct rte_flow_expand_rss buf;
2068                 uint8_t buffer[2048];
2069         } expand_buffer;
2070         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
2071         int ret;
2072         uint32_t i;
2073         uint32_t flow_size;
2074
2075         ret = flow_drv_validate(dev, attr, items, actions, error);
2076         if (ret < 0)
2077                 return NULL;
2078         flow_size = sizeof(struct rte_flow);
2079         rss = flow_get_rss_action(actions);
2080         if (rss)
2081                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
2082                                             sizeof(void *));
2083         else
2084                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
2085         flow = rte_calloc(__func__, 1, flow_size, 0);
2086         flow->drv_type = flow_get_drv_type(dev, attr);
2087         flow->ingress = attr->ingress;
2088         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
2089                flow->drv_type < MLX5_FLOW_TYPE_MAX);
2090         flow->queue = (void *)(flow + 1);
2091         LIST_INIT(&flow->dev_flows);
2092         if (rss && rss->types) {
2093                 unsigned int graph_root;
2094
2095                 graph_root = find_graph_root(items, rss->level);
2096                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
2097                                           items, rss->types,
2098                                           mlx5_support_expansion,
2099                                           graph_root);
2100                 assert(ret > 0 &&
2101                        (unsigned int)ret < sizeof(expand_buffer.buffer));
2102         } else {
2103                 buf->entries = 1;
2104                 buf->entry[0].pattern = (void *)(uintptr_t)items;
2105         }
2106         for (i = 0; i < buf->entries; ++i) {
2107                 dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern,
2108                                             actions, error);
2109                 if (!dev_flow)
2110                         goto error;
2111                 dev_flow->flow = flow;
2112                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
2113                 ret = flow_drv_translate(dev, dev_flow, attr,
2114                                          buf->entry[i].pattern,
2115                                          actions, error);
2116                 if (ret < 0)
2117                         goto error;
2118         }
2119         if (dev->data->dev_started) {
2120                 ret = flow_drv_apply(dev, flow, error);
2121                 if (ret < 0)
2122                         goto error;
2123         }
2124         TAILQ_INSERT_TAIL(list, flow, next);
2125         flow_rxq_flags_set(dev, flow);
2126         return flow;
2127 error:
2128         ret = rte_errno; /* Save rte_errno before cleanup. */
2129         assert(flow);
2130         flow_drv_destroy(dev, flow);
2131         rte_free(flow);
2132         rte_errno = ret; /* Restore rte_errno. */
2133         return NULL;
2134 }
2135
2136 /**
2137  * Create a flow.
2138  *
2139  * @see rte_flow_create()
2140  * @see rte_flow_ops
2141  */
2142 struct rte_flow *
2143 mlx5_flow_create(struct rte_eth_dev *dev,
2144                  const struct rte_flow_attr *attr,
2145                  const struct rte_flow_item items[],
2146                  const struct rte_flow_action actions[],
2147                  struct rte_flow_error *error)
2148 {
2149         struct mlx5_priv *priv = (struct mlx5_priv *)dev->data->dev_private;
2150
2151         return flow_list_create(dev, &priv->flows,
2152                                 attr, items, actions, error);
2153 }
2154
2155 /**
2156  * Destroy a flow in a list.
2157  *
2158  * @param dev
2159  *   Pointer to Ethernet device.
2160  * @param list
2161  *   Pointer to a TAILQ flow list.
2162  * @param[in] flow
2163  *   Flow to destroy.
2164  */
2165 static void
2166 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2167                   struct rte_flow *flow)
2168 {
2169         /*
2170          * Update RX queue flags only if port is started, otherwise it is
2171          * already clean.
2172          */
2173         if (dev->data->dev_started)
2174                 flow_rxq_flags_trim(dev, flow);
2175         flow_drv_destroy(dev, flow);
2176         TAILQ_REMOVE(list, flow, next);
2177         rte_free(flow->fdir);
2178         rte_free(flow);
2179 }
2180
2181 /**
2182  * Destroy all flows.
2183  *
2184  * @param dev
2185  *   Pointer to Ethernet device.
2186  * @param list
2187  *   Pointer to a TAILQ flow list.
2188  */
2189 void
2190 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2191 {
2192         while (!TAILQ_EMPTY(list)) {
2193                 struct rte_flow *flow;
2194
2195                 flow = TAILQ_FIRST(list);
2196                 flow_list_destroy(dev, list, flow);
2197         }
2198 }
2199
2200 /**
2201  * Remove all flows.
2202  *
2203  * @param dev
2204  *   Pointer to Ethernet device.
2205  * @param list
2206  *   Pointer to a TAILQ flow list.
2207  */
2208 void
2209 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2210 {
2211         struct rte_flow *flow;
2212
2213         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
2214                 flow_drv_remove(dev, flow);
2215         flow_rxq_flags_clear(dev);
2216 }
2217
2218 /**
2219  * Add all flows.
2220  *
2221  * @param dev
2222  *   Pointer to Ethernet device.
2223  * @param list
2224  *   Pointer to a TAILQ flow list.
2225  *
2226  * @return
2227  *   0 on success, a negative errno value otherwise and rte_errno is set.
2228  */
2229 int
2230 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2231 {
2232         struct rte_flow *flow;
2233         struct rte_flow_error error;
2234         int ret = 0;
2235
2236         TAILQ_FOREACH(flow, list, next) {
2237                 ret = flow_drv_apply(dev, flow, &error);
2238                 if (ret < 0)
2239                         goto error;
2240                 flow_rxq_flags_set(dev, flow);
2241         }
2242         return 0;
2243 error:
2244         ret = rte_errno; /* Save rte_errno before cleanup. */
2245         mlx5_flow_stop(dev, list);
2246         rte_errno = ret; /* Restore rte_errno. */
2247         return -rte_errno;
2248 }
2249
2250 /**
2251  * Verify the flow list is empty
2252  *
2253  * @param dev
2254  *  Pointer to Ethernet device.
2255  *
2256  * @return the number of flows not released.
2257  */
2258 int
2259 mlx5_flow_verify(struct rte_eth_dev *dev)
2260 {
2261         struct mlx5_priv *priv = dev->data->dev_private;
2262         struct rte_flow *flow;
2263         int ret = 0;
2264
2265         TAILQ_FOREACH(flow, &priv->flows, next) {
2266                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2267                         dev->data->port_id, (void *)flow);
2268                 ++ret;
2269         }
2270         return ret;
2271 }
2272
2273 /**
2274  * Enable a control flow configured from the control plane.
2275  *
2276  * @param dev
2277  *   Pointer to Ethernet device.
2278  * @param eth_spec
2279  *   An Ethernet flow spec to apply.
2280  * @param eth_mask
2281  *   An Ethernet flow mask to apply.
2282  * @param vlan_spec
2283  *   A VLAN flow spec to apply.
2284  * @param vlan_mask
2285  *   A VLAN flow mask to apply.
2286  *
2287  * @return
2288  *   0 on success, a negative errno value otherwise and rte_errno is set.
2289  */
2290 int
2291 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2292                     struct rte_flow_item_eth *eth_spec,
2293                     struct rte_flow_item_eth *eth_mask,
2294                     struct rte_flow_item_vlan *vlan_spec,
2295                     struct rte_flow_item_vlan *vlan_mask)
2296 {
2297         struct mlx5_priv *priv = dev->data->dev_private;
2298         const struct rte_flow_attr attr = {
2299                 .ingress = 1,
2300                 .priority = MLX5_FLOW_PRIO_RSVD,
2301         };
2302         struct rte_flow_item items[] = {
2303                 {
2304                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2305                         .spec = eth_spec,
2306                         .last = NULL,
2307                         .mask = eth_mask,
2308                 },
2309                 {
2310                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2311                                               RTE_FLOW_ITEM_TYPE_END,
2312                         .spec = vlan_spec,
2313                         .last = NULL,
2314                         .mask = vlan_mask,
2315                 },
2316                 {
2317                         .type = RTE_FLOW_ITEM_TYPE_END,
2318                 },
2319         };
2320         uint16_t queue[priv->reta_idx_n];
2321         struct rte_flow_action_rss action_rss = {
2322                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2323                 .level = 0,
2324                 .types = priv->rss_conf.rss_hf,
2325                 .key_len = priv->rss_conf.rss_key_len,
2326                 .queue_num = priv->reta_idx_n,
2327                 .key = priv->rss_conf.rss_key,
2328                 .queue = queue,
2329         };
2330         struct rte_flow_action actions[] = {
2331                 {
2332                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2333                         .conf = &action_rss,
2334                 },
2335                 {
2336                         .type = RTE_FLOW_ACTION_TYPE_END,
2337                 },
2338         };
2339         struct rte_flow *flow;
2340         struct rte_flow_error error;
2341         unsigned int i;
2342
2343         if (!priv->reta_idx_n || !priv->rxqs_n) {
2344                 return 0;
2345         }
2346         for (i = 0; i != priv->reta_idx_n; ++i)
2347                 queue[i] = (*priv->reta_idx)[i];
2348         flow = flow_list_create(dev, &priv->ctrl_flows,
2349                                 &attr, items, actions, &error);
2350         if (!flow)
2351                 return -rte_errno;
2352         return 0;
2353 }
2354
2355 /**
2356  * Enable a flow control configured from the control plane.
2357  *
2358  * @param dev
2359  *   Pointer to Ethernet device.
2360  * @param eth_spec
2361  *   An Ethernet flow spec to apply.
2362  * @param eth_mask
2363  *   An Ethernet flow mask to apply.
2364  *
2365  * @return
2366  *   0 on success, a negative errno value otherwise and rte_errno is set.
2367  */
2368 int
2369 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2370                struct rte_flow_item_eth *eth_spec,
2371                struct rte_flow_item_eth *eth_mask)
2372 {
2373         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2374 }
2375
2376 /**
2377  * Destroy a flow.
2378  *
2379  * @see rte_flow_destroy()
2380  * @see rte_flow_ops
2381  */
2382 int
2383 mlx5_flow_destroy(struct rte_eth_dev *dev,
2384                   struct rte_flow *flow,
2385                   struct rte_flow_error *error __rte_unused)
2386 {
2387         struct mlx5_priv *priv = dev->data->dev_private;
2388
2389         flow_list_destroy(dev, &priv->flows, flow);
2390         return 0;
2391 }
2392
2393 /**
2394  * Destroy all flows.
2395  *
2396  * @see rte_flow_flush()
2397  * @see rte_flow_ops
2398  */
2399 int
2400 mlx5_flow_flush(struct rte_eth_dev *dev,
2401                 struct rte_flow_error *error __rte_unused)
2402 {
2403         struct mlx5_priv *priv = dev->data->dev_private;
2404
2405         mlx5_flow_list_flush(dev, &priv->flows);
2406         return 0;
2407 }
2408
2409 /**
2410  * Isolated mode.
2411  *
2412  * @see rte_flow_isolate()
2413  * @see rte_flow_ops
2414  */
2415 int
2416 mlx5_flow_isolate(struct rte_eth_dev *dev,
2417                   int enable,
2418                   struct rte_flow_error *error)
2419 {
2420         struct mlx5_priv *priv = dev->data->dev_private;
2421
2422         if (dev->data->dev_started) {
2423                 rte_flow_error_set(error, EBUSY,
2424                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2425                                    NULL,
2426                                    "port must be stopped first");
2427                 return -rte_errno;
2428         }
2429         priv->isolated = !!enable;
2430         if (enable)
2431                 dev->dev_ops = &mlx5_dev_ops_isolate;
2432         else
2433                 dev->dev_ops = &mlx5_dev_ops;
2434         return 0;
2435 }
2436
2437 /**
2438  * Query a flow.
2439  *
2440  * @see rte_flow_query()
2441  * @see rte_flow_ops
2442  */
2443 static int
2444 flow_drv_query(struct rte_eth_dev *dev,
2445                struct rte_flow *flow,
2446                const struct rte_flow_action *actions,
2447                void *data,
2448                struct rte_flow_error *error)
2449 {
2450         const struct mlx5_flow_driver_ops *fops;
2451         enum mlx5_flow_drv_type ftype = flow->drv_type;
2452
2453         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
2454         fops = flow_get_drv_ops(ftype);
2455
2456         return fops->query(dev, flow, actions, data, error);
2457 }
2458
2459 /**
2460  * Query a flow.
2461  *
2462  * @see rte_flow_query()
2463  * @see rte_flow_ops
2464  */
2465 int
2466 mlx5_flow_query(struct rte_eth_dev *dev,
2467                 struct rte_flow *flow,
2468                 const struct rte_flow_action *actions,
2469                 void *data,
2470                 struct rte_flow_error *error)
2471 {
2472         int ret;
2473
2474         ret = flow_drv_query(dev, flow, actions, data, error);
2475         if (ret < 0)
2476                 return ret;
2477         return 0;
2478 }
2479
2480 /**
2481  * Convert a flow director filter to a generic flow.
2482  *
2483  * @param dev
2484  *   Pointer to Ethernet device.
2485  * @param fdir_filter
2486  *   Flow director filter to add.
2487  * @param attributes
2488  *   Generic flow parameters structure.
2489  *
2490  * @return
2491  *   0 on success, a negative errno value otherwise and rte_errno is set.
2492  */
2493 static int
2494 flow_fdir_filter_convert(struct rte_eth_dev *dev,
2495                          const struct rte_eth_fdir_filter *fdir_filter,
2496                          struct mlx5_fdir *attributes)
2497 {
2498         struct mlx5_priv *priv = dev->data->dev_private;
2499         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2500         const struct rte_eth_fdir_masks *mask =
2501                 &dev->data->dev_conf.fdir_conf.mask;
2502
2503         /* Validate queue number. */
2504         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2505                 DRV_LOG(ERR, "port %u invalid queue number %d",
2506                         dev->data->port_id, fdir_filter->action.rx_queue);
2507                 rte_errno = EINVAL;
2508                 return -rte_errno;
2509         }
2510         attributes->attr.ingress = 1;
2511         attributes->items[0] = (struct rte_flow_item) {
2512                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2513                 .spec = &attributes->l2,
2514                 .mask = &attributes->l2_mask,
2515         };
2516         switch (fdir_filter->action.behavior) {
2517         case RTE_ETH_FDIR_ACCEPT:
2518                 attributes->actions[0] = (struct rte_flow_action){
2519                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2520                         .conf = &attributes->queue,
2521                 };
2522                 break;
2523         case RTE_ETH_FDIR_REJECT:
2524                 attributes->actions[0] = (struct rte_flow_action){
2525                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2526                 };
2527                 break;
2528         default:
2529                 DRV_LOG(ERR, "port %u invalid behavior %d",
2530                         dev->data->port_id,
2531                         fdir_filter->action.behavior);
2532                 rte_errno = ENOTSUP;
2533                 return -rte_errno;
2534         }
2535         attributes->queue.index = fdir_filter->action.rx_queue;
2536         /* Handle L3. */
2537         switch (fdir_filter->input.flow_type) {
2538         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2539         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2540         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2541                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2542                         .src_addr = input->flow.ip4_flow.src_ip,
2543                         .dst_addr = input->flow.ip4_flow.dst_ip,
2544                         .time_to_live = input->flow.ip4_flow.ttl,
2545                         .type_of_service = input->flow.ip4_flow.tos,
2546                 };
2547                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
2548                         .src_addr = mask->ipv4_mask.src_ip,
2549                         .dst_addr = mask->ipv4_mask.dst_ip,
2550                         .time_to_live = mask->ipv4_mask.ttl,
2551                         .type_of_service = mask->ipv4_mask.tos,
2552                         .next_proto_id = mask->ipv4_mask.proto,
2553                 };
2554                 attributes->items[1] = (struct rte_flow_item){
2555                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2556                         .spec = &attributes->l3,
2557                         .mask = &attributes->l3_mask,
2558                 };
2559                 break;
2560         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2561         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2562         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2563                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2564                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2565                         .proto = input->flow.ipv6_flow.proto,
2566                 };
2567
2568                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2569                        input->flow.ipv6_flow.src_ip,
2570                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2571                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2572                        input->flow.ipv6_flow.dst_ip,
2573                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2574                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2575                        mask->ipv6_mask.src_ip,
2576                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2577                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2578                        mask->ipv6_mask.dst_ip,
2579                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2580                 attributes->items[1] = (struct rte_flow_item){
2581                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2582                         .spec = &attributes->l3,
2583                         .mask = &attributes->l3_mask,
2584                 };
2585                 break;
2586         default:
2587                 DRV_LOG(ERR, "port %u invalid flow type%d",
2588                         dev->data->port_id, fdir_filter->input.flow_type);
2589                 rte_errno = ENOTSUP;
2590                 return -rte_errno;
2591         }
2592         /* Handle L4. */
2593         switch (fdir_filter->input.flow_type) {
2594         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2595                 attributes->l4.udp.hdr = (struct udp_hdr){
2596                         .src_port = input->flow.udp4_flow.src_port,
2597                         .dst_port = input->flow.udp4_flow.dst_port,
2598                 };
2599                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2600                         .src_port = mask->src_port_mask,
2601                         .dst_port = mask->dst_port_mask,
2602                 };
2603                 attributes->items[2] = (struct rte_flow_item){
2604                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2605                         .spec = &attributes->l4,
2606                         .mask = &attributes->l4_mask,
2607                 };
2608                 break;
2609         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2610                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2611                         .src_port = input->flow.tcp4_flow.src_port,
2612                         .dst_port = input->flow.tcp4_flow.dst_port,
2613                 };
2614                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2615                         .src_port = mask->src_port_mask,
2616                         .dst_port = mask->dst_port_mask,
2617                 };
2618                 attributes->items[2] = (struct rte_flow_item){
2619                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2620                         .spec = &attributes->l4,
2621                         .mask = &attributes->l4_mask,
2622                 };
2623                 break;
2624         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2625                 attributes->l4.udp.hdr = (struct udp_hdr){
2626                         .src_port = input->flow.udp6_flow.src_port,
2627                         .dst_port = input->flow.udp6_flow.dst_port,
2628                 };
2629                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2630                         .src_port = mask->src_port_mask,
2631                         .dst_port = mask->dst_port_mask,
2632                 };
2633                 attributes->items[2] = (struct rte_flow_item){
2634                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2635                         .spec = &attributes->l4,
2636                         .mask = &attributes->l4_mask,
2637                 };
2638                 break;
2639         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2640                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2641                         .src_port = input->flow.tcp6_flow.src_port,
2642                         .dst_port = input->flow.tcp6_flow.dst_port,
2643                 };
2644                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2645                         .src_port = mask->src_port_mask,
2646                         .dst_port = mask->dst_port_mask,
2647                 };
2648                 attributes->items[2] = (struct rte_flow_item){
2649                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2650                         .spec = &attributes->l4,
2651                         .mask = &attributes->l4_mask,
2652                 };
2653                 break;
2654         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2655         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2656                 break;
2657         default:
2658                 DRV_LOG(ERR, "port %u invalid flow type%d",
2659                         dev->data->port_id, fdir_filter->input.flow_type);
2660                 rte_errno = ENOTSUP;
2661                 return -rte_errno;
2662         }
2663         return 0;
2664 }
2665
2666 #define FLOW_FDIR_CMP(f1, f2, fld) \
2667         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
2668
2669 /**
2670  * Compare two FDIR flows. If items and actions are identical, the two flows are
2671  * regarded as same.
2672  *
2673  * @param dev
2674  *   Pointer to Ethernet device.
2675  * @param f1
2676  *   FDIR flow to compare.
2677  * @param f2
2678  *   FDIR flow to compare.
2679  *
2680  * @return
2681  *   Zero on match, 1 otherwise.
2682  */
2683 static int
2684 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
2685 {
2686         if (FLOW_FDIR_CMP(f1, f2, attr) ||
2687             FLOW_FDIR_CMP(f1, f2, l2) ||
2688             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
2689             FLOW_FDIR_CMP(f1, f2, l3) ||
2690             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
2691             FLOW_FDIR_CMP(f1, f2, l4) ||
2692             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
2693             FLOW_FDIR_CMP(f1, f2, actions[0].type))
2694                 return 1;
2695         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
2696             FLOW_FDIR_CMP(f1, f2, queue))
2697                 return 1;
2698         return 0;
2699 }
2700
2701 /**
2702  * Search device flow list to find out a matched FDIR flow.
2703  *
2704  * @param dev
2705  *   Pointer to Ethernet device.
2706  * @param fdir_flow
2707  *   FDIR flow to lookup.
2708  *
2709  * @return
2710  *   Pointer of flow if found, NULL otherwise.
2711  */
2712 static struct rte_flow *
2713 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
2714 {
2715         struct mlx5_priv *priv = dev->data->dev_private;
2716         struct rte_flow *flow = NULL;
2717
2718         assert(fdir_flow);
2719         TAILQ_FOREACH(flow, &priv->flows, next) {
2720                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
2721                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
2722                                 dev->data->port_id, (void *)flow);
2723                         break;
2724                 }
2725         }
2726         return flow;
2727 }
2728
2729 /**
2730  * Add new flow director filter and store it in list.
2731  *
2732  * @param dev
2733  *   Pointer to Ethernet device.
2734  * @param fdir_filter
2735  *   Flow director filter to add.
2736  *
2737  * @return
2738  *   0 on success, a negative errno value otherwise and rte_errno is set.
2739  */
2740 static int
2741 flow_fdir_filter_add(struct rte_eth_dev *dev,
2742                      const struct rte_eth_fdir_filter *fdir_filter)
2743 {
2744         struct mlx5_priv *priv = dev->data->dev_private;
2745         struct mlx5_fdir *fdir_flow;
2746         struct rte_flow *flow;
2747         int ret;
2748
2749         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
2750         if (!fdir_flow) {
2751                 rte_errno = ENOMEM;
2752                 return -rte_errno;
2753         }
2754         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
2755         if (ret)
2756                 goto error;
2757         flow = flow_fdir_filter_lookup(dev, fdir_flow);
2758         if (flow) {
2759                 rte_errno = EEXIST;
2760                 goto error;
2761         }
2762         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
2763                                 fdir_flow->items, fdir_flow->actions, NULL);
2764         if (!flow)
2765                 goto error;
2766         assert(!flow->fdir);
2767         flow->fdir = fdir_flow;
2768         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
2769                 dev->data->port_id, (void *)flow);
2770         return 0;
2771 error:
2772         rte_free(fdir_flow);
2773         return -rte_errno;
2774 }
2775
2776 /**
2777  * Delete specific filter.
2778  *
2779  * @param dev
2780  *   Pointer to Ethernet device.
2781  * @param fdir_filter
2782  *   Filter to be deleted.
2783  *
2784  * @return
2785  *   0 on success, a negative errno value otherwise and rte_errno is set.
2786  */
2787 static int
2788 flow_fdir_filter_delete(struct rte_eth_dev *dev,
2789                         const struct rte_eth_fdir_filter *fdir_filter)
2790 {
2791         struct mlx5_priv *priv = dev->data->dev_private;
2792         struct rte_flow *flow;
2793         struct mlx5_fdir fdir_flow = {
2794                 .attr.group = 0,
2795         };
2796         int ret;
2797
2798         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
2799         if (ret)
2800                 return -rte_errno;
2801         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
2802         if (!flow) {
2803                 rte_errno = ENOENT;
2804                 return -rte_errno;
2805         }
2806         flow_list_destroy(dev, &priv->flows, flow);
2807         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
2808                 dev->data->port_id, (void *)flow);
2809         return 0;
2810 }
2811
2812 /**
2813  * Update queue for specific filter.
2814  *
2815  * @param dev
2816  *   Pointer to Ethernet device.
2817  * @param fdir_filter
2818  *   Filter to be updated.
2819  *
2820  * @return
2821  *   0 on success, a negative errno value otherwise and rte_errno is set.
2822  */
2823 static int
2824 flow_fdir_filter_update(struct rte_eth_dev *dev,
2825                         const struct rte_eth_fdir_filter *fdir_filter)
2826 {
2827         int ret;
2828
2829         ret = flow_fdir_filter_delete(dev, fdir_filter);
2830         if (ret)
2831                 return ret;
2832         return flow_fdir_filter_add(dev, fdir_filter);
2833 }
2834
2835 /**
2836  * Flush all filters.
2837  *
2838  * @param dev
2839  *   Pointer to Ethernet device.
2840  */
2841 static void
2842 flow_fdir_filter_flush(struct rte_eth_dev *dev)
2843 {
2844         struct mlx5_priv *priv = dev->data->dev_private;
2845
2846         mlx5_flow_list_flush(dev, &priv->flows);
2847 }
2848
2849 /**
2850  * Get flow director information.
2851  *
2852  * @param dev
2853  *   Pointer to Ethernet device.
2854  * @param[out] fdir_info
2855  *   Resulting flow director information.
2856  */
2857 static void
2858 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
2859 {
2860         struct rte_eth_fdir_masks *mask =
2861                 &dev->data->dev_conf.fdir_conf.mask;
2862
2863         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
2864         fdir_info->guarant_spc = 0;
2865         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
2866         fdir_info->max_flexpayload = 0;
2867         fdir_info->flow_types_mask[0] = 0;
2868         fdir_info->flex_payload_unit = 0;
2869         fdir_info->max_flex_payload_segment_num = 0;
2870         fdir_info->flex_payload_limit = 0;
2871         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
2872 }
2873
2874 /**
2875  * Deal with flow director operations.
2876  *
2877  * @param dev
2878  *   Pointer to Ethernet device.
2879  * @param filter_op
2880  *   Operation to perform.
2881  * @param arg
2882  *   Pointer to operation-specific structure.
2883  *
2884  * @return
2885  *   0 on success, a negative errno value otherwise and rte_errno is set.
2886  */
2887 static int
2888 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
2889                     void *arg)
2890 {
2891         enum rte_fdir_mode fdir_mode =
2892                 dev->data->dev_conf.fdir_conf.mode;
2893
2894         if (filter_op == RTE_ETH_FILTER_NOP)
2895                 return 0;
2896         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
2897             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
2898                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
2899                         dev->data->port_id, fdir_mode);
2900                 rte_errno = EINVAL;
2901                 return -rte_errno;
2902         }
2903         switch (filter_op) {
2904         case RTE_ETH_FILTER_ADD:
2905                 return flow_fdir_filter_add(dev, arg);
2906         case RTE_ETH_FILTER_UPDATE:
2907                 return flow_fdir_filter_update(dev, arg);
2908         case RTE_ETH_FILTER_DELETE:
2909                 return flow_fdir_filter_delete(dev, arg);
2910         case RTE_ETH_FILTER_FLUSH:
2911                 flow_fdir_filter_flush(dev);
2912                 break;
2913         case RTE_ETH_FILTER_INFO:
2914                 flow_fdir_info_get(dev, arg);
2915                 break;
2916         default:
2917                 DRV_LOG(DEBUG, "port %u unknown operation %u",
2918                         dev->data->port_id, filter_op);
2919                 rte_errno = EINVAL;
2920                 return -rte_errno;
2921         }
2922         return 0;
2923 }
2924
2925 /**
2926  * Manage filter operations.
2927  *
2928  * @param dev
2929  *   Pointer to Ethernet device structure.
2930  * @param filter_type
2931  *   Filter type.
2932  * @param filter_op
2933  *   Operation to perform.
2934  * @param arg
2935  *   Pointer to operation-specific structure.
2936  *
2937  * @return
2938  *   0 on success, a negative errno value otherwise and rte_errno is set.
2939  */
2940 int
2941 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
2942                      enum rte_filter_type filter_type,
2943                      enum rte_filter_op filter_op,
2944                      void *arg)
2945 {
2946         switch (filter_type) {
2947         case RTE_ETH_FILTER_GENERIC:
2948                 if (filter_op != RTE_ETH_FILTER_GET) {
2949                         rte_errno = EINVAL;
2950                         return -rte_errno;
2951                 }
2952                 *(const void **)arg = &mlx5_flow_ops;
2953                 return 0;
2954         case RTE_ETH_FILTER_FDIR:
2955                 return flow_fdir_ctrl_func(dev, filter_op, arg);
2956         default:
2957                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
2958                         dev->data->port_id, filter_type);
2959                 rte_errno = ENOTSUP;
2960                 return -rte_errno;
2961         }
2962         return 0;
2963 }