drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_ethdev_driver.h>
  25 #include <rte_flow.h>
  26 #include <rte_flow_driver.h>
  27 #include <rte_malloc.h>
  28 #include <rte_ip.h>
  29
  30 #include "mlx5.h"
  31 #include "mlx5_defs.h"
  32 #include "mlx5_flow.h"
  33 #include "mlx5_glue.h"
  34 #include "mlx5_prm.h"
  35 #include "mlx5_rxtx.h"
  36
  37 /* Dev ops structure defined in mlx5.c */
  38 extern const struct eth_dev_ops mlx5_dev_ops;
  39 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  40
  41 /** Device flow drivers. */
  42 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  43 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  44 #endif
  45 extern const struct mlx5_flow_driver_ops mlx5_flow_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[in] item_flags
 885  *   Items that were detected.
 886  * @param[out] error
 887  *   Pointer to error structure.
 888  *
 889  * @return
 890  *   0 on success, a negative errno value otherwise and rte_errno is set.
 891  */
 892 int
 893 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
 894                               uint64_t action_flags,
 895                               struct rte_eth_dev *dev,
 896                               const struct rte_flow_attr *attr,
 897                               uint64_t item_flags,
 898                               struct rte_flow_error *error)
 899 {
 900         struct mlx5_priv *priv = dev->data->dev_private;
 901         const struct rte_flow_action_rss *rss = action->conf;
 902         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
 903         unsigned int i;
 904
 905         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 906                 return rte_flow_error_set(error, EINVAL,
 907                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 908                                           "can't have 2 fate actions"
 909                                           " in same flow");
 910         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
 911             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
 912                 return rte_flow_error_set(error, ENOTSUP,
 913                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 914                                           &rss->func,
 915                                           "RSS hash function not supported");
 916 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 917         if (rss->level > 2)
 918 #else
 919         if (rss->level > 1)
 920 #endif
 921                 return rte_flow_error_set(error, ENOTSUP,
 922                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 923                                           &rss->level,
 924                                           "tunnel RSS is not supported");
 925         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
 926         if (rss->key_len == 0 && rss->key != NULL)
 927                 return rte_flow_error_set(error, ENOTSUP,
 928                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 929                                           &rss->key_len,
 930                                           "RSS hash key length 0");
 931         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
 932                 return rte_flow_error_set(error, ENOTSUP,
 933                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 934                                           &rss->key_len,
 935                                           "RSS hash key too small");
 936         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
 937                 return rte_flow_error_set(error, ENOTSUP,
 938                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 939                                           &rss->key_len,
 940                                           "RSS hash key too large");
 941         if (rss->queue_num > priv->config.ind_table_max_size)
 942                 return rte_flow_error_set(error, ENOTSUP,
 943                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 944                                           &rss->queue_num,
 945                                           "number of queues too large");
 946         if (rss->types & MLX5_RSS_HF_MASK)
 947                 return rte_flow_error_set(error, ENOTSUP,
 948                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 949                                           &rss->types,
 950                                           "some RSS protocols are not"
 951                                           " supported");
 952         if (!priv->rxqs_n)
 953                 return rte_flow_error_set(error, EINVAL,
 954                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 955                                           NULL, "No Rx queues configured");
 956         if (!rss->queue_num)
 957                 return rte_flow_error_set(error, EINVAL,
 958                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 959                                           NULL, "No queues configured");
 960         for (i = 0; i != rss->queue_num; ++i) {
 961                 if (!(*priv->rxqs)[rss->queue[i]])
 962                         return rte_flow_error_set
 963                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 964                                  &rss->queue[i], "queue is not configured");
 965         }
 966         if (attr->egress)
 967                 return rte_flow_error_set(error, ENOTSUP,
 968                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 969                                           "rss action not supported for "
 970                                           "egress");
 971         if (rss->level > 1 &&  !tunnel)
 972                 return rte_flow_error_set(error, EINVAL,
 973                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
 974                                           "inner RSS is not supported for "
 975                                           "non-tunnel flows");
 976         return 0;
 977 }
 978
 979 /*
 980  * Validate the count action.
 981  *
 982  * @param[in] dev
 983  *   Pointer to the Ethernet device structure.
 984  * @param[in] attr
 985  *   Attributes of flow that includes this action.
 986  * @param[out] error
 987  *   Pointer to error structure.
 988  *
 989  * @return
 990  *   0 on success, a negative errno value otherwise and rte_errno is set.
 991  */
 992 int
 993 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
 994                                 const struct rte_flow_attr *attr,
 995                                 struct rte_flow_error *error)
 996 {
 997         if (attr->egress)
 998                 return rte_flow_error_set(error, ENOTSUP,
 999                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1000                                           "count action not supported for "
1001                                           "egress");
1002         return 0;
1003 }
1004
1005 /**
1006  * Verify the @p attributes will be correctly understood by the NIC and store
1007  * them in the @p flow if everything is correct.
1008  *
1009  * @param[in] dev
1010  *   Pointer to the Ethernet device structure.
1011  * @param[in] attributes
1012  *   Pointer to flow attributes
1013  * @param[out] error
1014  *   Pointer to error structure.
1015  *
1016  * @return
1017  *   0 on success, a negative errno value otherwise and rte_errno is set.
1018  */
1019 int
1020 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1021                               const struct rte_flow_attr *attributes,
1022                               struct rte_flow_error *error)
1023 {
1024         struct mlx5_priv *priv = dev->data->dev_private;
1025         uint32_t priority_max = priv->config.flow_prio - 1;
1026
1027         if (attributes->group)
1028                 return rte_flow_error_set(error, ENOTSUP,
1029                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1030                                           NULL, "groups is not supported");
1031         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1032             attributes->priority >= priority_max)
1033                 return rte_flow_error_set(error, ENOTSUP,
1034                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1035                                           NULL, "priority out of range");
1036         if (attributes->egress)
1037                 return rte_flow_error_set(error, ENOTSUP,
1038                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1039                                           "egress is not supported");
1040         if (attributes->transfer)
1041                 return rte_flow_error_set(error, ENOTSUP,
1042                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1043                                           NULL, "transfer is not supported");
1044         if (!attributes->ingress)
1045                 return rte_flow_error_set(error, EINVAL,
1046                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1047                                           NULL,
1048                                           "ingress attribute is mandatory");
1049         return 0;
1050 }
1051
1052 /**
1053  * Validate Ethernet item.
1054  *
1055  * @param[in] item
1056  *   Item specification.
1057  * @param[in] item_flags
1058  *   Bit-fields that holds the items detected until now.
1059  * @param[out] error
1060  *   Pointer to error structure.
1061  *
1062  * @return
1063  *   0 on success, a negative errno value otherwise and rte_errno is set.
1064  */
1065 int
1066 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1067                             uint64_t item_flags,
1068                             struct rte_flow_error *error)
1069 {
1070         const struct rte_flow_item_eth *mask = item->mask;
1071         const struct rte_flow_item_eth nic_mask = {
1072                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1073                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1074                 .type = RTE_BE16(0xffff),
1075         };
1076         int ret;
1077         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1078         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1079                                        MLX5_FLOW_LAYER_OUTER_L2;
1080
1081         if (item_flags & ethm)
1082                 return rte_flow_error_set(error, ENOTSUP,
1083                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1084                                           "multiple L2 layers not supported");
1085         if (!mask)
1086                 mask = &rte_flow_item_eth_mask;
1087         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1088                                         (const uint8_t *)&nic_mask,
1089                                         sizeof(struct rte_flow_item_eth),
1090                                         error);
1091         return ret;
1092 }
1093
1094 /**
1095  * Validate VLAN item.
1096  *
1097  * @param[in] item
1098  *   Item specification.
1099  * @param[in] item_flags
1100  *   Bit-fields that holds the items detected until now.
1101  * @param[out] error
1102  *   Pointer to error structure.
1103  *
1104  * @return
1105  *   0 on success, a negative errno value otherwise and rte_errno is set.
1106  */
1107 int
1108 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1109                              uint64_t item_flags,
1110                              struct rte_flow_error *error)
1111 {
1112         const struct rte_flow_item_vlan *spec = item->spec;
1113         const struct rte_flow_item_vlan *mask = item->mask;
1114         const struct rte_flow_item_vlan nic_mask = {
1115                 .tci = RTE_BE16(0x0fff),
1116                 .inner_type = RTE_BE16(0xffff),
1117         };
1118         uint16_t vlan_tag = 0;
1119         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1120         int ret;
1121         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1122                                         MLX5_FLOW_LAYER_INNER_L4) :
1123                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1124                                         MLX5_FLOW_LAYER_OUTER_L4);
1125         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1126                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1127
1128         if (item_flags & vlanm)
1129                 return rte_flow_error_set(error, EINVAL,
1130                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1131                                           "multiple VLAN layers not supported");
1132         else if ((item_flags & l34m) != 0)
1133                 return rte_flow_error_set(error, EINVAL,
1134                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1135                                           "L2 layer cannot follow L3/L4 layer");
1136         if (!mask)
1137                 mask = &rte_flow_item_vlan_mask;
1138         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1139                                         (const uint8_t *)&nic_mask,
1140                                         sizeof(struct rte_flow_item_vlan),
1141                                         error);
1142         if (ret)
1143                 return ret;
1144         if (spec) {
1145                 vlan_tag = spec->tci;
1146                 vlan_tag &= mask->tci;
1147         }
1148         /*
1149          * From verbs perspective an empty VLAN is equivalent
1150          * to a packet without VLAN layer.
1151          */
1152         if (!vlan_tag)
1153                 return rte_flow_error_set(error, EINVAL,
1154                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1155                                           item->spec,
1156                                           "VLAN cannot be empty");
1157         return 0;
1158 }
1159
1160 /**
1161  * Validate IPV4 item.
1162  *
1163  * @param[in] item
1164  *   Item specification.
1165  * @param[in] item_flags
1166  *   Bit-fields that holds the items detected until now.
1167  * @param[in] acc_mask
1168  *   Acceptable mask, if NULL default internal default mask
1169  *   will be used to check whether item fields are supported.
1170  * @param[out] error
1171  *   Pointer to error structure.
1172  *
1173  * @return
1174  *   0 on success, a negative errno value otherwise and rte_errno is set.
1175  */
1176 int
1177 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1178                              uint64_t item_flags,
1179                              const struct rte_flow_item_ipv4 *acc_mask,
1180                              struct rte_flow_error *error)
1181 {
1182         const struct rte_flow_item_ipv4 *mask = item->mask;
1183         const struct rte_flow_item_ipv4 nic_mask = {
1184                 .hdr = {
1185                         .src_addr = RTE_BE32(0xffffffff),
1186                         .dst_addr = RTE_BE32(0xffffffff),
1187                         .type_of_service = 0xff,
1188                         .next_proto_id = 0xff,
1189                 },
1190         };
1191         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1192         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1193                                       MLX5_FLOW_LAYER_OUTER_L3;
1194         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1195                                       MLX5_FLOW_LAYER_OUTER_L4;
1196         int ret;
1197
1198         if (item_flags & l3m)
1199                 return rte_flow_error_set(error, ENOTSUP,
1200                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1201                                           "multiple L3 layers not supported");
1202         else if (item_flags & l4m)
1203                 return rte_flow_error_set(error, EINVAL,
1204                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1205                                           "L3 cannot follow an L4 layer.");
1206         if (!mask)
1207                 mask = &rte_flow_item_ipv4_mask;
1208         else if (mask->hdr.next_proto_id != 0 &&
1209                  mask->hdr.next_proto_id != 0xff)
1210                 return rte_flow_error_set(error, EINVAL,
1211                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1212                                           "partial mask is not supported"
1213                                           " for protocol");
1214         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1215                                         acc_mask ? (const uint8_t *)acc_mask
1216                                                  : (const uint8_t *)&nic_mask,
1217                                         sizeof(struct rte_flow_item_ipv4),
1218                                         error);
1219         if (ret < 0)
1220                 return ret;
1221         return 0;
1222 }
1223
1224 /**
1225  * Validate IPV6 item.
1226  *
1227  * @param[in] item
1228  *   Item specification.
1229  * @param[in] item_flags
1230  *   Bit-fields that holds the items detected until now.
1231  * @param[in] acc_mask
1232  *   Acceptable mask, if NULL default internal default mask
1233  *   will be used to check whether item fields are supported.
1234  * @param[out] error
1235  *   Pointer to error structure.
1236  *
1237  * @return
1238  *   0 on success, a negative errno value otherwise and rte_errno is set.
1239  */
1240 int
1241 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1242                              uint64_t item_flags,
1243                              const struct rte_flow_item_ipv6 *acc_mask,
1244                              struct rte_flow_error *error)
1245 {
1246         const struct rte_flow_item_ipv6 *mask = item->mask;
1247         const struct rte_flow_item_ipv6 nic_mask = {
1248                 .hdr = {
1249                         .src_addr =
1250                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1251                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1252                         .dst_addr =
1253                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1254                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1255                         .vtc_flow = RTE_BE32(0xffffffff),
1256                         .proto = 0xff,
1257                         .hop_limits = 0xff,
1258                 },
1259         };
1260         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1261         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1262                                       MLX5_FLOW_LAYER_OUTER_L3;
1263         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1264                                       MLX5_FLOW_LAYER_OUTER_L4;
1265         int ret;
1266
1267         if (item_flags & l3m)
1268                 return rte_flow_error_set(error, ENOTSUP,
1269                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1270                                           "multiple L3 layers not supported");
1271         else if (item_flags & l4m)
1272                 return rte_flow_error_set(error, EINVAL,
1273                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1274                                           "L3 cannot follow an L4 layer.");
1275         if (!mask)
1276                 mask = &rte_flow_item_ipv6_mask;
1277         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1278                                         acc_mask ? (const uint8_t *)acc_mask
1279                                                  : (const uint8_t *)&nic_mask,
1280                                         sizeof(struct rte_flow_item_ipv6),
1281                                         error);
1282         if (ret < 0)
1283                 return ret;
1284         return 0;
1285 }
1286
1287 /**
1288  * Validate UDP item.
1289  *
1290  * @param[in] item
1291  *   Item specification.
1292  * @param[in] item_flags
1293  *   Bit-fields that holds the items detected until now.
1294  * @param[in] target_protocol
1295  *   The next protocol in the previous item.
1296  * @param[in] flow_mask
1297  *   mlx5 flow-specific (TCF, DV, verbs, etc.) supported header fields mask.
1298  * @param[out] error
1299  *   Pointer to error structure.
1300  *
1301  * @return
1302  *   0 on success, a negative errno value otherwise and rte_errno is set.
1303  */
1304 int
1305 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1306                             uint64_t item_flags,
1307                             uint8_t target_protocol,
1308                             struct rte_flow_error *error)
1309 {
1310         const struct rte_flow_item_udp *mask = item->mask;
1311         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1312         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1313                                       MLX5_FLOW_LAYER_OUTER_L3;
1314         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1315                                       MLX5_FLOW_LAYER_OUTER_L4;
1316         int ret;
1317
1318         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1319                 return rte_flow_error_set(error, EINVAL,
1320                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1321                                           "protocol filtering not compatible"
1322                                           " with UDP layer");
1323         if (!(item_flags & l3m))
1324                 return rte_flow_error_set(error, EINVAL,
1325                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1326                                           "L3 is mandatory to filter on L4");
1327         if (item_flags & l4m)
1328                 return rte_flow_error_set(error, EINVAL,
1329                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1330                                           "multiple L4 layers not supported");
1331         if (!mask)
1332                 mask = &rte_flow_item_udp_mask;
1333         ret = mlx5_flow_item_acceptable
1334                 (item, (const uint8_t *)mask,
1335                  (const uint8_t *)&rte_flow_item_udp_mask,
1336                  sizeof(struct rte_flow_item_udp), error);
1337         if (ret < 0)
1338                 return ret;
1339         return 0;
1340 }
1341
1342 /**
1343  * Validate TCP item.
1344  *
1345  * @param[in] item
1346  *   Item specification.
1347  * @param[in] item_flags
1348  *   Bit-fields that holds the items detected until now.
1349  * @param[in] target_protocol
1350  *   The next protocol in the previous item.
1351  * @param[out] error
1352  *   Pointer to error structure.
1353  *
1354  * @return
1355  *   0 on success, a negative errno value otherwise and rte_errno is set.
1356  */
1357 int
1358 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1359                             uint64_t item_flags,
1360                             uint8_t target_protocol,
1361                             const struct rte_flow_item_tcp *flow_mask,
1362                             struct rte_flow_error *error)
1363 {
1364         const struct rte_flow_item_tcp *mask = item->mask;
1365         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1366         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1367                                       MLX5_FLOW_LAYER_OUTER_L3;
1368         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1369                                       MLX5_FLOW_LAYER_OUTER_L4;
1370         int ret;
1371
1372         assert(flow_mask);
1373         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1374                 return rte_flow_error_set(error, EINVAL,
1375                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1376                                           "protocol filtering not compatible"
1377                                           " with TCP layer");
1378         if (!(item_flags & l3m))
1379                 return rte_flow_error_set(error, EINVAL,
1380                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1381                                           "L3 is mandatory to filter on L4");
1382         if (item_flags & l4m)
1383                 return rte_flow_error_set(error, EINVAL,
1384                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1385                                           "multiple L4 layers not supported");
1386         if (!mask)
1387                 mask = &rte_flow_item_tcp_mask;
1388         ret = mlx5_flow_item_acceptable
1389                 (item, (const uint8_t *)mask,
1390                  (const uint8_t *)flow_mask,
1391                  sizeof(struct rte_flow_item_tcp), error);
1392         if (ret < 0)
1393                 return ret;
1394         return 0;
1395 }
1396
1397 /**
1398  * Validate VXLAN item.
1399  *
1400  * @param[in] item
1401  *   Item specification.
1402  * @param[in] item_flags
1403  *   Bit-fields that holds the items detected until now.
1404  * @param[in] target_protocol
1405  *   The next protocol in the previous item.
1406  * @param[out] error
1407  *   Pointer to error structure.
1408  *
1409  * @return
1410  *   0 on success, a negative errno value otherwise and rte_errno is set.
1411  */
1412 int
1413 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1414                               uint64_t item_flags,
1415                               struct rte_flow_error *error)
1416 {
1417         const struct rte_flow_item_vxlan *spec = item->spec;
1418         const struct rte_flow_item_vxlan *mask = item->mask;
1419         int ret;
1420         union vni {
1421                 uint32_t vlan_id;
1422                 uint8_t vni[4];
1423         } id = { .vlan_id = 0, };
1424         uint32_t vlan_id = 0;
1425
1426
1427         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1428                 return rte_flow_error_set(error, ENOTSUP,
1429                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1430                                           "multiple tunnel layers not"
1431                                           " supported");
1432         /*
1433          * Verify only UDPv4 is present as defined in
1434          * https://tools.ietf.org/html/rfc7348
1435          */
1436         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1437                 return rte_flow_error_set(error, EINVAL,
1438                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1439                                           "no outer UDP layer found");
1440         if (!mask)
1441                 mask = &rte_flow_item_vxlan_mask;
1442         ret = mlx5_flow_item_acceptable
1443                 (item, (const uint8_t *)mask,
1444                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1445                  sizeof(struct rte_flow_item_vxlan),
1446                  error);
1447         if (ret < 0)
1448                 return ret;
1449         if (spec) {
1450                 memcpy(&id.vni[1], spec->vni, 3);
1451                 vlan_id = id.vlan_id;
1452                 memcpy(&id.vni[1], mask->vni, 3);
1453                 vlan_id &= id.vlan_id;
1454         }
1455         /*
1456          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1457          * only this layer is defined in the Verbs specification it is
1458          * interpreted as wildcard and all packets will match this
1459          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1460          * udp), all packets matching the layers before will also
1461          * match this rule.  To avoid such situation, VNI 0 is
1462          * currently refused.
1463          */
1464         if (!vlan_id)
1465                 return rte_flow_error_set(error, ENOTSUP,
1466                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1467                                           "VXLAN vni cannot be 0");
1468         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1469                 return rte_flow_error_set(error, ENOTSUP,
1470                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1471                                           "VXLAN tunnel must be fully defined");
1472         return 0;
1473 }
1474
1475 /**
1476  * Validate VXLAN_GPE item.
1477  *
1478  * @param[in] item
1479  *   Item specification.
1480  * @param[in] item_flags
1481  *   Bit-fields that holds the items detected until now.
1482  * @param[in] priv
1483  *   Pointer to the private data structure.
1484  * @param[in] target_protocol
1485  *   The next protocol in the previous item.
1486  * @param[out] error
1487  *   Pointer to error structure.
1488  *
1489  * @return
1490  *   0 on success, a negative errno value otherwise and rte_errno is set.
1491  */
1492 int
1493 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1494                                   uint64_t item_flags,
1495                                   struct rte_eth_dev *dev,
1496                                   struct rte_flow_error *error)
1497 {
1498         struct mlx5_priv *priv = dev->data->dev_private;
1499         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1500         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1501         int ret;
1502         union vni {
1503                 uint32_t vlan_id;
1504                 uint8_t vni[4];
1505         } id = { .vlan_id = 0, };
1506         uint32_t vlan_id = 0;
1507
1508         if (!priv->config.l3_vxlan_en)
1509                 return rte_flow_error_set(error, ENOTSUP,
1510                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1511                                           "L3 VXLAN is not enabled by device"
1512                                           " parameter and/or not configured in"
1513                                           " firmware");
1514         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1515                 return rte_flow_error_set(error, ENOTSUP,
1516                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1517                                           "multiple tunnel layers not"
1518                                           " supported");
1519         /*
1520          * Verify only UDPv4 is present as defined in
1521          * https://tools.ietf.org/html/rfc7348
1522          */
1523         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1524                 return rte_flow_error_set(error, EINVAL,
1525                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1526                                           "no outer UDP layer found");
1527         if (!mask)
1528                 mask = &rte_flow_item_vxlan_gpe_mask;
1529         ret = mlx5_flow_item_acceptable
1530                 (item, (const uint8_t *)mask,
1531                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1532                  sizeof(struct rte_flow_item_vxlan_gpe),
1533                  error);
1534         if (ret < 0)
1535                 return ret;
1536         if (spec) {
1537                 if (spec->protocol)
1538                         return rte_flow_error_set(error, ENOTSUP,
1539                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1540                                                   item,
1541                                                   "VxLAN-GPE protocol"
1542                                                   " not supported");
1543                 memcpy(&id.vni[1], spec->vni, 3);
1544                 vlan_id = id.vlan_id;
1545                 memcpy(&id.vni[1], mask->vni, 3);
1546                 vlan_id &= id.vlan_id;
1547         }
1548         /*
1549          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1550          * layer is defined in the Verbs specification it is interpreted as
1551          * wildcard and all packets will match this rule, if it follows a full
1552          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1553          * before will also match this rule.  To avoid such situation, VNI 0
1554          * is currently refused.
1555          */
1556         if (!vlan_id)
1557                 return rte_flow_error_set(error, ENOTSUP,
1558                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1559                                           "VXLAN-GPE vni cannot be 0");
1560         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1561                 return rte_flow_error_set(error, ENOTSUP,
1562                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1563                                           "VXLAN-GPE tunnel must be fully"
1564                                           " defined");
1565         return 0;
1566 }
1567
1568 /**
1569  * Validate GRE item.
1570  *
1571  * @param[in] item
1572  *   Item specification.
1573  * @param[in] item_flags
1574  *   Bit flags to mark detected items.
1575  * @param[in] target_protocol
1576  *   The next protocol in the previous item.
1577  * @param[out] error
1578  *   Pointer to error structure.
1579  *
1580  * @return
1581  *   0 on success, a negative errno value otherwise and rte_errno is set.
1582  */
1583 int
1584 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
1585                             uint64_t item_flags,
1586                             uint8_t target_protocol,
1587                             struct rte_flow_error *error)
1588 {
1589         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
1590         const struct rte_flow_item_gre *mask = item->mask;
1591         int ret;
1592
1593         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
1594                 return rte_flow_error_set(error, EINVAL,
1595                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1596                                           "protocol filtering not compatible"
1597                                           " with this GRE layer");
1598         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1599                 return rte_flow_error_set(error, ENOTSUP,
1600                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1601                                           "multiple tunnel layers not"
1602                                           " supported");
1603         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
1604                 return rte_flow_error_set(error, ENOTSUP,
1605                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1606                                           "L3 Layer is missing");
1607         if (!mask)
1608                 mask = &rte_flow_item_gre_mask;
1609         ret = mlx5_flow_item_acceptable
1610                 (item, (const uint8_t *)mask,
1611                  (const uint8_t *)&rte_flow_item_gre_mask,
1612                  sizeof(struct rte_flow_item_gre), error);
1613         if (ret < 0)
1614                 return ret;
1615 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1616         if (spec && (spec->protocol & mask->protocol))
1617                 return rte_flow_error_set(error, ENOTSUP,
1618                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1619                                           "without MPLS support the"
1620                                           " specification cannot be used for"
1621                                           " filtering");
1622 #endif
1623         return 0;
1624 }
1625
1626 /**
1627  * Validate MPLS item.
1628  *
1629  * @param[in] dev
1630  *   Pointer to the rte_eth_dev structure.
1631  * @param[in] item
1632  *   Item specification.
1633  * @param[in] item_flags
1634  *   Bit-fields that holds the items detected until now.
1635  * @param[in] prev_layer
1636  *   The protocol layer indicated in previous item.
1637  * @param[out] error
1638  *   Pointer to error structure.
1639  *
1640  * @return
1641  *   0 on success, a negative errno value otherwise and rte_errno is set.
1642  */
1643 int
1644 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
1645                              const struct rte_flow_item *item __rte_unused,
1646                              uint64_t item_flags __rte_unused,
1647                              uint64_t prev_layer __rte_unused,
1648                              struct rte_flow_error *error)
1649 {
1650 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1651         const struct rte_flow_item_mpls *mask = item->mask;
1652         struct mlx5_priv *priv = dev->data->dev_private;
1653         int ret;
1654
1655         if (!priv->config.mpls_en)
1656                 return rte_flow_error_set(error, ENOTSUP,
1657                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1658                                           "MPLS not supported or"
1659                                           " disabled in firmware"
1660                                           " configuration.");
1661         /* MPLS over IP, UDP, GRE is allowed */
1662         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
1663                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
1664                             MLX5_FLOW_LAYER_GRE)))
1665                 return rte_flow_error_set(error, EINVAL,
1666                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1667                                           "protocol filtering not compatible"
1668                                           " with MPLS layer");
1669         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
1670         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
1671             !(item_flags & MLX5_FLOW_LAYER_GRE))
1672                 return rte_flow_error_set(error, ENOTSUP,
1673                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1674                                           "multiple tunnel layers not"
1675                                           " supported");
1676         if (!mask)
1677                 mask = &rte_flow_item_mpls_mask;
1678         ret = mlx5_flow_item_acceptable
1679                 (item, (const uint8_t *)mask,
1680                  (const uint8_t *)&rte_flow_item_mpls_mask,
1681                  sizeof(struct rte_flow_item_mpls), error);
1682         if (ret < 0)
1683                 return ret;
1684         return 0;
1685 #endif
1686         return rte_flow_error_set(error, ENOTSUP,
1687                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
1688                                   "MPLS is not supported by Verbs, please"
1689                                   " update.");
1690 }
1691
1692 static int
1693 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
1694                    const struct rte_flow_attr *attr __rte_unused,
1695                    const struct rte_flow_item items[] __rte_unused,
1696                    const struct rte_flow_action actions[] __rte_unused,
1697                    struct rte_flow_error *error __rte_unused)
1698 {
1699         rte_errno = ENOTSUP;
1700         return -rte_errno;
1701 }
1702
1703 static struct mlx5_flow *
1704 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
1705                   const struct rte_flow_item items[] __rte_unused,
1706                   const struct rte_flow_action actions[] __rte_unused,
1707                   struct rte_flow_error *error __rte_unused)
1708 {
1709         rte_errno = ENOTSUP;
1710         return NULL;
1711 }
1712
1713 static int
1714 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
1715                     struct mlx5_flow *dev_flow __rte_unused,
1716                     const struct rte_flow_attr *attr __rte_unused,
1717                     const struct rte_flow_item items[] __rte_unused,
1718                     const struct rte_flow_action actions[] __rte_unused,
1719                     struct rte_flow_error *error __rte_unused)
1720 {
1721         rte_errno = ENOTSUP;
1722         return -rte_errno;
1723 }
1724
1725 static int
1726 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
1727                 struct rte_flow *flow __rte_unused,
1728                 struct rte_flow_error *error __rte_unused)
1729 {
1730         rte_errno = ENOTSUP;
1731         return -rte_errno;
1732 }
1733
1734 static void
1735 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
1736                  struct rte_flow *flow __rte_unused)
1737 {
1738 }
1739
1740 static void
1741 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
1742                   struct rte_flow *flow __rte_unused)
1743 {
1744 }
1745
1746 static int
1747 flow_null_query(struct rte_eth_dev *dev __rte_unused,
1748                 struct rte_flow *flow __rte_unused,
1749                 const struct rte_flow_action *actions __rte_unused,
1750                 void *data __rte_unused,
1751                 struct rte_flow_error *error __rte_unused)
1752 {
1753         rte_errno = ENOTSUP;
1754         return -rte_errno;
1755 }
1756
1757 /* Void driver to protect from null pointer reference. */
1758 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
1759         .validate = flow_null_validate,
1760         .prepare = flow_null_prepare,
1761         .translate = flow_null_translate,
1762         .apply = flow_null_apply,
1763         .remove = flow_null_remove,
1764         .destroy = flow_null_destroy,
1765         .query = flow_null_query,
1766 };
1767
1768 /**
1769  * Select flow driver type according to flow attributes and device
1770  * configuration.
1771  *
1772  * @param[in] dev
1773  *   Pointer to the dev structure.
1774  * @param[in] attr
1775  *   Pointer to the flow attributes.
1776  *
1777  * @return
1778  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
1779  */
1780 static enum mlx5_flow_drv_type
1781 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
1782 {
1783         struct mlx5_priv *priv = dev->data->dev_private;
1784         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
1785
1786         if (attr->transfer && !priv->config.dv_esw_en)
1787                 type = MLX5_FLOW_TYPE_TCF;
1788         else
1789                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
1790                                                  MLX5_FLOW_TYPE_VERBS;
1791         return type;
1792 }
1793
1794 #define flow_get_drv_ops(type) flow_drv_ops[type]
1795
1796 /**
1797  * Flow driver validation API. This abstracts calling driver specific functions.
1798  * The type of flow driver is determined according to flow attributes.
1799  *
1800  * @param[in] dev
1801  *   Pointer to the dev structure.
1802  * @param[in] attr
1803  *   Pointer to the flow attributes.
1804  * @param[in] items
1805  *   Pointer to the list of items.
1806  * @param[in] actions
1807  *   Pointer to the list of actions.
1808  * @param[out] error
1809  *   Pointer to the error structure.
1810  *
1811  * @return
1812  *   0 on success, a negative errno value otherwise and rte_errno is set.
1813  */
1814 static inline int
1815 flow_drv_validate(struct rte_eth_dev *dev,
1816                   const struct rte_flow_attr *attr,
1817                   const struct rte_flow_item items[],
1818                   const struct rte_flow_action actions[],
1819                   struct rte_flow_error *error)
1820 {
1821         const struct mlx5_flow_driver_ops *fops;
1822         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
1823
1824         fops = flow_get_drv_ops(type);
1825         return fops->validate(dev, attr, items, actions, error);
1826 }
1827
1828 /**
1829  * Flow driver preparation API. This abstracts calling driver specific
1830  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1831  * calculates the size of memory required for device flow, allocates the memory,
1832  * initializes the device flow and returns the pointer.
1833  *
1834  * @note
1835  *   This function initializes device flow structure such as dv, tcf or verbs in
1836  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
1837  *   rest. For example, adding returning device flow to flow->dev_flow list and
1838  *   setting backward reference to the flow should be done out of this function.
1839  *   layers field is not filled either.
1840  *
1841  * @param[in] attr
1842  *   Pointer to the flow attributes.
1843  * @param[in] items
1844  *   Pointer to the list of items.
1845  * @param[in] actions
1846  *   Pointer to the list of actions.
1847  * @param[out] error
1848  *   Pointer to the error structure.
1849  *
1850  * @return
1851  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
1852  */
1853 static inline struct mlx5_flow *
1854 flow_drv_prepare(const struct rte_flow *flow,
1855                  const struct rte_flow_attr *attr,
1856                  const struct rte_flow_item items[],
1857                  const struct rte_flow_action actions[],
1858                  struct rte_flow_error *error)
1859 {
1860         const struct mlx5_flow_driver_ops *fops;
1861         enum mlx5_flow_drv_type type = flow->drv_type;
1862
1863         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1864         fops = flow_get_drv_ops(type);
1865         return fops->prepare(attr, items, actions, error);
1866 }
1867
1868 /**
1869  * Flow driver translation API. This abstracts calling driver specific
1870  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1871  * translates a generic flow into a driver flow. flow_drv_prepare() must
1872  * precede.
1873  *
1874  * @note
1875  *   dev_flow->layers could be filled as a result of parsing during translation
1876  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
1877  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
1878  *   flow->actions could be overwritten even though all the expanded dev_flows
1879  *   have the same actions.
1880  *
1881  * @param[in] dev
1882  *   Pointer to the rte dev structure.
1883  * @param[in, out] dev_flow
1884  *   Pointer to the mlx5 flow.
1885  * @param[in] attr
1886  *   Pointer to the flow attributes.
1887  * @param[in] items
1888  *   Pointer to the list of items.
1889  * @param[in] actions
1890  *   Pointer to the list of actions.
1891  * @param[out] error
1892  *   Pointer to the error structure.
1893  *
1894  * @return
1895  *   0 on success, a negative errno value otherwise and rte_errno is set.
1896  */
1897 static inline int
1898 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
1899                    const struct rte_flow_attr *attr,
1900                    const struct rte_flow_item items[],
1901                    const struct rte_flow_action actions[],
1902                    struct rte_flow_error *error)
1903 {
1904         const struct mlx5_flow_driver_ops *fops;
1905         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
1906
1907         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1908         fops = flow_get_drv_ops(type);
1909         return fops->translate(dev, dev_flow, attr, items, actions, error);
1910 }
1911
1912 /**
1913  * Flow driver apply API. This abstracts calling driver specific functions.
1914  * Parent flow (rte_flow) should have driver type (drv_type). It applies
1915  * translated driver flows on to device. flow_drv_translate() must precede.
1916  *
1917  * @param[in] dev
1918  *   Pointer to Ethernet device structure.
1919  * @param[in, out] flow
1920  *   Pointer to flow structure.
1921  * @param[out] error
1922  *   Pointer to error structure.
1923  *
1924  * @return
1925  *   0 on success, a negative errno value otherwise and rte_errno is set.
1926  */
1927 static inline int
1928 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
1929                struct rte_flow_error *error)
1930 {
1931         const struct mlx5_flow_driver_ops *fops;
1932         enum mlx5_flow_drv_type type = flow->drv_type;
1933
1934         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1935         fops = flow_get_drv_ops(type);
1936         return fops->apply(dev, flow, error);
1937 }
1938
1939 /**
1940  * Flow driver remove API. This abstracts calling driver specific functions.
1941  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1942  * on device. All the resources of the flow should be freed by calling
1943  * flow_drv_destroy().
1944  *
1945  * @param[in] dev
1946  *   Pointer to Ethernet device.
1947  * @param[in, out] flow
1948  *   Pointer to flow structure.
1949  */
1950 static inline void
1951 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
1952 {
1953         const struct mlx5_flow_driver_ops *fops;
1954         enum mlx5_flow_drv_type type = flow->drv_type;
1955
1956         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1957         fops = flow_get_drv_ops(type);
1958         fops->remove(dev, flow);
1959 }
1960
1961 /**
1962  * Flow driver destroy API. This abstracts calling driver specific functions.
1963  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1964  * on device and releases resources of the flow.
1965  *
1966  * @param[in] dev
1967  *   Pointer to Ethernet device.
1968  * @param[in, out] flow
1969  *   Pointer to flow structure.
1970  */
1971 static inline void
1972 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
1973 {
1974         const struct mlx5_flow_driver_ops *fops;
1975         enum mlx5_flow_drv_type type = flow->drv_type;
1976
1977         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1978         fops = flow_get_drv_ops(type);
1979         fops->destroy(dev, flow);
1980 }
1981
1982 /**
1983  * Validate a flow supported by the NIC.
1984  *
1985  * @see rte_flow_validate()
1986  * @see rte_flow_ops
1987  */
1988 int
1989 mlx5_flow_validate(struct rte_eth_dev *dev,
1990                    const struct rte_flow_attr *attr,
1991                    const struct rte_flow_item items[],
1992                    const struct rte_flow_action actions[],
1993                    struct rte_flow_error *error)
1994 {
1995         int ret;
1996
1997         ret = flow_drv_validate(dev, attr, items, actions, error);
1998         if (ret < 0)
1999                 return ret;
2000         return 0;
2001 }
2002
2003 /**
2004  * Get RSS action from the action list.
2005  *
2006  * @param[in] actions
2007  *   Pointer to the list of actions.
2008  *
2009  * @return
2010  *   Pointer to the RSS action if exist, else return NULL.
2011  */
2012 static const struct rte_flow_action_rss*
2013 flow_get_rss_action(const struct rte_flow_action actions[])
2014 {
2015         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2016                 switch (actions->type) {
2017                 case RTE_FLOW_ACTION_TYPE_RSS:
2018                         return (const struct rte_flow_action_rss *)
2019                                actions->conf;
2020                 default:
2021                         break;
2022                 }
2023         }
2024         return NULL;
2025 }
2026
2027 static unsigned int
2028 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2029 {
2030         const struct rte_flow_item *item;
2031         unsigned int has_vlan = 0;
2032
2033         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2034                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2035                         has_vlan = 1;
2036                         break;
2037                 }
2038         }
2039         if (has_vlan)
2040                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2041                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2042         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2043                                MLX5_EXPANSION_ROOT_OUTER;
2044 }
2045
2046 /**
2047  * Create a flow and add it to @p list.
2048  *
2049  * @param dev
2050  *   Pointer to Ethernet device.
2051  * @param list
2052  *   Pointer to a TAILQ flow list.
2053  * @param[in] attr
2054  *   Flow rule attributes.
2055  * @param[in] items
2056  *   Pattern specification (list terminated by the END pattern item).
2057  * @param[in] actions
2058  *   Associated actions (list terminated by the END action).
2059  * @param[out] error
2060  *   Perform verbose error reporting if not NULL.
2061  *
2062  * @return
2063  *   A flow on success, NULL otherwise and rte_errno is set.
2064  */
2065 static struct rte_flow *
2066 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2067                  const struct rte_flow_attr *attr,
2068                  const struct rte_flow_item items[],
2069                  const struct rte_flow_action actions[],
2070                  struct rte_flow_error *error)
2071 {
2072         struct rte_flow *flow = NULL;
2073         struct mlx5_flow *dev_flow;
2074         const struct rte_flow_action_rss *rss;
2075         union {
2076                 struct rte_flow_expand_rss buf;
2077                 uint8_t buffer[2048];
2078         } expand_buffer;
2079         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
2080         int ret;
2081         uint32_t i;
2082         uint32_t flow_size;
2083
2084         ret = flow_drv_validate(dev, attr, items, actions, error);
2085         if (ret < 0)
2086                 return NULL;
2087         flow_size = sizeof(struct rte_flow);
2088         rss = flow_get_rss_action(actions);
2089         if (rss)
2090                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
2091                                             sizeof(void *));
2092         else
2093                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
2094         flow = rte_calloc(__func__, 1, flow_size, 0);
2095         flow->drv_type = flow_get_drv_type(dev, attr);
2096         flow->ingress = attr->ingress;
2097         flow->transfer = attr->transfer;
2098         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
2099                flow->drv_type < MLX5_FLOW_TYPE_MAX);
2100         flow->queue = (void *)(flow + 1);
2101         LIST_INIT(&flow->dev_flows);
2102         if (rss && rss->types) {
2103                 unsigned int graph_root;
2104
2105                 graph_root = find_graph_root(items, rss->level);
2106                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
2107                                           items, rss->types,
2108                                           mlx5_support_expansion,
2109                                           graph_root);
2110                 assert(ret > 0 &&
2111                        (unsigned int)ret < sizeof(expand_buffer.buffer));
2112         } else {
2113                 buf->entries = 1;
2114                 buf->entry[0].pattern = (void *)(uintptr_t)items;
2115         }
2116         for (i = 0; i < buf->entries; ++i) {
2117                 dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern,
2118                                             actions, error);
2119                 if (!dev_flow)
2120                         goto error;
2121                 dev_flow->flow = flow;
2122                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
2123                 ret = flow_drv_translate(dev, dev_flow, attr,
2124                                          buf->entry[i].pattern,
2125                                          actions, error);
2126                 if (ret < 0)
2127                         goto error;
2128         }
2129         if (dev->data->dev_started) {
2130                 ret = flow_drv_apply(dev, flow, error);
2131                 if (ret < 0)
2132                         goto error;
2133         }
2134         TAILQ_INSERT_TAIL(list, flow, next);
2135         flow_rxq_flags_set(dev, flow);
2136         return flow;
2137 error:
2138         ret = rte_errno; /* Save rte_errno before cleanup. */
2139         assert(flow);
2140         flow_drv_destroy(dev, flow);
2141         rte_free(flow);
2142         rte_errno = ret; /* Restore rte_errno. */
2143         return NULL;
2144 }
2145
2146 /**
2147  * Create a flow.
2148  *
2149  * @see rte_flow_create()
2150  * @see rte_flow_ops
2151  */
2152 struct rte_flow *
2153 mlx5_flow_create(struct rte_eth_dev *dev,
2154                  const struct rte_flow_attr *attr,
2155                  const struct rte_flow_item items[],
2156                  const struct rte_flow_action actions[],
2157                  struct rte_flow_error *error)
2158 {
2159         struct mlx5_priv *priv = (struct mlx5_priv *)dev->data->dev_private;
2160
2161         return flow_list_create(dev, &priv->flows,
2162                                 attr, items, actions, error);
2163 }
2164
2165 /**
2166  * Destroy a flow in a list.
2167  *
2168  * @param dev
2169  *   Pointer to Ethernet device.
2170  * @param list
2171  *   Pointer to a TAILQ flow list.
2172  * @param[in] flow
2173  *   Flow to destroy.
2174  */
2175 static void
2176 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2177                   struct rte_flow *flow)
2178 {
2179         /*
2180          * Update RX queue flags only if port is started, otherwise it is
2181          * already clean.
2182          */
2183         if (dev->data->dev_started)
2184                 flow_rxq_flags_trim(dev, flow);
2185         flow_drv_destroy(dev, flow);
2186         TAILQ_REMOVE(list, flow, next);
2187         rte_free(flow->fdir);
2188         rte_free(flow);
2189 }
2190
2191 /**
2192  * Destroy all flows.
2193  *
2194  * @param dev
2195  *   Pointer to Ethernet device.
2196  * @param list
2197  *   Pointer to a TAILQ flow list.
2198  */
2199 void
2200 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2201 {
2202         while (!TAILQ_EMPTY(list)) {
2203                 struct rte_flow *flow;
2204
2205                 flow = TAILQ_FIRST(list);
2206                 flow_list_destroy(dev, list, flow);
2207         }
2208 }
2209
2210 /**
2211  * Remove all flows.
2212  *
2213  * @param dev
2214  *   Pointer to Ethernet device.
2215  * @param list
2216  *   Pointer to a TAILQ flow list.
2217  */
2218 void
2219 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2220 {
2221         struct rte_flow *flow;
2222
2223         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
2224                 flow_drv_remove(dev, flow);
2225         flow_rxq_flags_clear(dev);
2226 }
2227
2228 /**
2229  * Add all flows.
2230  *
2231  * @param dev
2232  *   Pointer to Ethernet device.
2233  * @param list
2234  *   Pointer to a TAILQ flow list.
2235  *
2236  * @return
2237  *   0 on success, a negative errno value otherwise and rte_errno is set.
2238  */
2239 int
2240 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2241 {
2242         struct rte_flow *flow;
2243         struct rte_flow_error error;
2244         int ret = 0;
2245
2246         TAILQ_FOREACH(flow, list, next) {
2247                 ret = flow_drv_apply(dev, flow, &error);
2248                 if (ret < 0)
2249                         goto error;
2250                 flow_rxq_flags_set(dev, flow);
2251         }
2252         return 0;
2253 error:
2254         ret = rte_errno; /* Save rte_errno before cleanup. */
2255         mlx5_flow_stop(dev, list);
2256         rte_errno = ret; /* Restore rte_errno. */
2257         return -rte_errno;
2258 }
2259
2260 /**
2261  * Verify the flow list is empty
2262  *
2263  * @param dev
2264  *  Pointer to Ethernet device.
2265  *
2266  * @return the number of flows not released.
2267  */
2268 int
2269 mlx5_flow_verify(struct rte_eth_dev *dev)
2270 {
2271         struct mlx5_priv *priv = dev->data->dev_private;
2272         struct rte_flow *flow;
2273         int ret = 0;
2274
2275         TAILQ_FOREACH(flow, &priv->flows, next) {
2276                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2277                         dev->data->port_id, (void *)flow);
2278                 ++ret;
2279         }
2280         return ret;
2281 }
2282
2283 /**
2284  * Enable a control flow configured from the control plane.
2285  *
2286  * @param dev
2287  *   Pointer to Ethernet device.
2288  * @param eth_spec
2289  *   An Ethernet flow spec to apply.
2290  * @param eth_mask
2291  *   An Ethernet flow mask to apply.
2292  * @param vlan_spec
2293  *   A VLAN flow spec to apply.
2294  * @param vlan_mask
2295  *   A VLAN flow mask to apply.
2296  *
2297  * @return
2298  *   0 on success, a negative errno value otherwise and rte_errno is set.
2299  */
2300 int
2301 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2302                     struct rte_flow_item_eth *eth_spec,
2303                     struct rte_flow_item_eth *eth_mask,
2304                     struct rte_flow_item_vlan *vlan_spec,
2305                     struct rte_flow_item_vlan *vlan_mask)
2306 {
2307         struct mlx5_priv *priv = dev->data->dev_private;
2308         const struct rte_flow_attr attr = {
2309                 .ingress = 1,
2310                 .priority = MLX5_FLOW_PRIO_RSVD,
2311         };
2312         struct rte_flow_item items[] = {
2313                 {
2314                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2315                         .spec = eth_spec,
2316                         .last = NULL,
2317                         .mask = eth_mask,
2318                 },
2319                 {
2320                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2321                                               RTE_FLOW_ITEM_TYPE_END,
2322                         .spec = vlan_spec,
2323                         .last = NULL,
2324                         .mask = vlan_mask,
2325                 },
2326                 {
2327                         .type = RTE_FLOW_ITEM_TYPE_END,
2328                 },
2329         };
2330         uint16_t queue[priv->reta_idx_n];
2331         struct rte_flow_action_rss action_rss = {
2332                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2333                 .level = 0,
2334                 .types = priv->rss_conf.rss_hf,
2335                 .key_len = priv->rss_conf.rss_key_len,
2336                 .queue_num = priv->reta_idx_n,
2337                 .key = priv->rss_conf.rss_key,
2338                 .queue = queue,
2339         };
2340         struct rte_flow_action actions[] = {
2341                 {
2342                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2343                         .conf = &action_rss,
2344                 },
2345                 {
2346                         .type = RTE_FLOW_ACTION_TYPE_END,
2347                 },
2348         };
2349         struct rte_flow *flow;
2350         struct rte_flow_error error;
2351         unsigned int i;
2352
2353         if (!priv->reta_idx_n || !priv->rxqs_n) {
2354                 return 0;
2355         }
2356         for (i = 0; i != priv->reta_idx_n; ++i)
2357                 queue[i] = (*priv->reta_idx)[i];
2358         flow = flow_list_create(dev, &priv->ctrl_flows,
2359                                 &attr, items, actions, &error);
2360         if (!flow)
2361                 return -rte_errno;
2362         return 0;
2363 }
2364
2365 /**
2366  * Enable a flow control configured from the control plane.
2367  *
2368  * @param dev
2369  *   Pointer to Ethernet device.
2370  * @param eth_spec
2371  *   An Ethernet flow spec to apply.
2372  * @param eth_mask
2373  *   An Ethernet flow mask to apply.
2374  *
2375  * @return
2376  *   0 on success, a negative errno value otherwise and rte_errno is set.
2377  */
2378 int
2379 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2380                struct rte_flow_item_eth *eth_spec,
2381                struct rte_flow_item_eth *eth_mask)
2382 {
2383         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2384 }
2385
2386 /**
2387  * Destroy a flow.
2388  *
2389  * @see rte_flow_destroy()
2390  * @see rte_flow_ops
2391  */
2392 int
2393 mlx5_flow_destroy(struct rte_eth_dev *dev,
2394                   struct rte_flow *flow,
2395                   struct rte_flow_error *error __rte_unused)
2396 {
2397         struct mlx5_priv *priv = dev->data->dev_private;
2398
2399         flow_list_destroy(dev, &priv->flows, flow);
2400         return 0;
2401 }
2402
2403 /**
2404  * Destroy all flows.
2405  *
2406  * @see rte_flow_flush()
2407  * @see rte_flow_ops
2408  */
2409 int
2410 mlx5_flow_flush(struct rte_eth_dev *dev,
2411                 struct rte_flow_error *error __rte_unused)
2412 {
2413         struct mlx5_priv *priv = dev->data->dev_private;
2414
2415         mlx5_flow_list_flush(dev, &priv->flows);
2416         return 0;
2417 }
2418
2419 /**
2420  * Isolated mode.
2421  *
2422  * @see rte_flow_isolate()
2423  * @see rte_flow_ops
2424  */
2425 int
2426 mlx5_flow_isolate(struct rte_eth_dev *dev,
2427                   int enable,
2428                   struct rte_flow_error *error)
2429 {
2430         struct mlx5_priv *priv = dev->data->dev_private;
2431
2432         if (dev->data->dev_started) {
2433                 rte_flow_error_set(error, EBUSY,
2434                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2435                                    NULL,
2436                                    "port must be stopped first");
2437                 return -rte_errno;
2438         }
2439         priv->isolated = !!enable;
2440         if (enable)
2441                 dev->dev_ops = &mlx5_dev_ops_isolate;
2442         else
2443                 dev->dev_ops = &mlx5_dev_ops;
2444         return 0;
2445 }
2446
2447 /**
2448  * Query a flow.
2449  *
2450  * @see rte_flow_query()
2451  * @see rte_flow_ops
2452  */
2453 static int
2454 flow_drv_query(struct rte_eth_dev *dev,
2455                struct rte_flow *flow,
2456                const struct rte_flow_action *actions,
2457                void *data,
2458                struct rte_flow_error *error)
2459 {
2460         const struct mlx5_flow_driver_ops *fops;
2461         enum mlx5_flow_drv_type ftype = flow->drv_type;
2462
2463         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
2464         fops = flow_get_drv_ops(ftype);
2465
2466         return fops->query(dev, flow, actions, data, error);
2467 }
2468
2469 /**
2470  * Query a flow.
2471  *
2472  * @see rte_flow_query()
2473  * @see rte_flow_ops
2474  */
2475 int
2476 mlx5_flow_query(struct rte_eth_dev *dev,
2477                 struct rte_flow *flow,
2478                 const struct rte_flow_action *actions,
2479                 void *data,
2480                 struct rte_flow_error *error)
2481 {
2482         int ret;
2483
2484         ret = flow_drv_query(dev, flow, actions, data, error);
2485         if (ret < 0)
2486                 return ret;
2487         return 0;
2488 }
2489
2490 /**
2491  * Convert a flow director filter to a generic flow.
2492  *
2493  * @param dev
2494  *   Pointer to Ethernet device.
2495  * @param fdir_filter
2496  *   Flow director filter to add.
2497  * @param attributes
2498  *   Generic flow parameters structure.
2499  *
2500  * @return
2501  *   0 on success, a negative errno value otherwise and rte_errno is set.
2502  */
2503 static int
2504 flow_fdir_filter_convert(struct rte_eth_dev *dev,
2505                          const struct rte_eth_fdir_filter *fdir_filter,
2506                          struct mlx5_fdir *attributes)
2507 {
2508         struct mlx5_priv *priv = dev->data->dev_private;
2509         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2510         const struct rte_eth_fdir_masks *mask =
2511                 &dev->data->dev_conf.fdir_conf.mask;
2512
2513         /* Validate queue number. */
2514         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2515                 DRV_LOG(ERR, "port %u invalid queue number %d",
2516                         dev->data->port_id, fdir_filter->action.rx_queue);
2517                 rte_errno = EINVAL;
2518                 return -rte_errno;
2519         }
2520         attributes->attr.ingress = 1;
2521         attributes->items[0] = (struct rte_flow_item) {
2522                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2523                 .spec = &attributes->l2,
2524                 .mask = &attributes->l2_mask,
2525         };
2526         switch (fdir_filter->action.behavior) {
2527         case RTE_ETH_FDIR_ACCEPT:
2528                 attributes->actions[0] = (struct rte_flow_action){
2529                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2530                         .conf = &attributes->queue,
2531                 };
2532                 break;
2533         case RTE_ETH_FDIR_REJECT:
2534                 attributes->actions[0] = (struct rte_flow_action){
2535                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2536                 };
2537                 break;
2538         default:
2539                 DRV_LOG(ERR, "port %u invalid behavior %d",
2540                         dev->data->port_id,
2541                         fdir_filter->action.behavior);
2542                 rte_errno = ENOTSUP;
2543                 return -rte_errno;
2544         }
2545         attributes->queue.index = fdir_filter->action.rx_queue;
2546         /* Handle L3. */
2547         switch (fdir_filter->input.flow_type) {
2548         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2549         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2550         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2551                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
2552                         .src_addr = input->flow.ip4_flow.src_ip,
2553                         .dst_addr = input->flow.ip4_flow.dst_ip,
2554                         .time_to_live = input->flow.ip4_flow.ttl,
2555                         .type_of_service = input->flow.ip4_flow.tos,
2556                 };
2557                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
2558                         .src_addr = mask->ipv4_mask.src_ip,
2559                         .dst_addr = mask->ipv4_mask.dst_ip,
2560                         .time_to_live = mask->ipv4_mask.ttl,
2561                         .type_of_service = mask->ipv4_mask.tos,
2562                         .next_proto_id = mask->ipv4_mask.proto,
2563                 };
2564                 attributes->items[1] = (struct rte_flow_item){
2565                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2566                         .spec = &attributes->l3,
2567                         .mask = &attributes->l3_mask,
2568                 };
2569                 break;
2570         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2571         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2572         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2573                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
2574                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2575                         .proto = input->flow.ipv6_flow.proto,
2576                 };
2577
2578                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2579                        input->flow.ipv6_flow.src_ip,
2580                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2581                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2582                        input->flow.ipv6_flow.dst_ip,
2583                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2584                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2585                        mask->ipv6_mask.src_ip,
2586                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2587                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2588                        mask->ipv6_mask.dst_ip,
2589                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2590                 attributes->items[1] = (struct rte_flow_item){
2591                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2592                         .spec = &attributes->l3,
2593                         .mask = &attributes->l3_mask,
2594                 };
2595                 break;
2596         default:
2597                 DRV_LOG(ERR, "port %u invalid flow type%d",
2598                         dev->data->port_id, fdir_filter->input.flow_type);
2599                 rte_errno = ENOTSUP;
2600                 return -rte_errno;
2601         }
2602         /* Handle L4. */
2603         switch (fdir_filter->input.flow_type) {
2604         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2605                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
2606                         .src_port = input->flow.udp4_flow.src_port,
2607                         .dst_port = input->flow.udp4_flow.dst_port,
2608                 };
2609                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
2610                         .src_port = mask->src_port_mask,
2611                         .dst_port = mask->dst_port_mask,
2612                 };
2613                 attributes->items[2] = (struct rte_flow_item){
2614                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2615                         .spec = &attributes->l4,
2616                         .mask = &attributes->l4_mask,
2617                 };
2618                 break;
2619         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2620                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
2621                         .src_port = input->flow.tcp4_flow.src_port,
2622                         .dst_port = input->flow.tcp4_flow.dst_port,
2623                 };
2624                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
2625                         .src_port = mask->src_port_mask,
2626                         .dst_port = mask->dst_port_mask,
2627                 };
2628                 attributes->items[2] = (struct rte_flow_item){
2629                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2630                         .spec = &attributes->l4,
2631                         .mask = &attributes->l4_mask,
2632                 };
2633                 break;
2634         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2635                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
2636                         .src_port = input->flow.udp6_flow.src_port,
2637                         .dst_port = input->flow.udp6_flow.dst_port,
2638                 };
2639                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
2640                         .src_port = mask->src_port_mask,
2641                         .dst_port = mask->dst_port_mask,
2642                 };
2643                 attributes->items[2] = (struct rte_flow_item){
2644                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2645                         .spec = &attributes->l4,
2646                         .mask = &attributes->l4_mask,
2647                 };
2648                 break;
2649         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2650                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
2651                         .src_port = input->flow.tcp6_flow.src_port,
2652                         .dst_port = input->flow.tcp6_flow.dst_port,
2653                 };
2654                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
2655                         .src_port = mask->src_port_mask,
2656                         .dst_port = mask->dst_port_mask,
2657                 };
2658                 attributes->items[2] = (struct rte_flow_item){
2659                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2660                         .spec = &attributes->l4,
2661                         .mask = &attributes->l4_mask,
2662                 };
2663                 break;
2664         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2665         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2666                 break;
2667         default:
2668                 DRV_LOG(ERR, "port %u invalid flow type%d",
2669                         dev->data->port_id, fdir_filter->input.flow_type);
2670                 rte_errno = ENOTSUP;
2671                 return -rte_errno;
2672         }
2673         return 0;
2674 }
2675
2676 #define FLOW_FDIR_CMP(f1, f2, fld) \
2677         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
2678
2679 /**
2680  * Compare two FDIR flows. If items and actions are identical, the two flows are
2681  * regarded as same.
2682  *
2683  * @param dev
2684  *   Pointer to Ethernet device.
2685  * @param f1
2686  *   FDIR flow to compare.
2687  * @param f2
2688  *   FDIR flow to compare.
2689  *
2690  * @return
2691  *   Zero on match, 1 otherwise.
2692  */
2693 static int
2694 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
2695 {
2696         if (FLOW_FDIR_CMP(f1, f2, attr) ||
2697             FLOW_FDIR_CMP(f1, f2, l2) ||
2698             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
2699             FLOW_FDIR_CMP(f1, f2, l3) ||
2700             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
2701             FLOW_FDIR_CMP(f1, f2, l4) ||
2702             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
2703             FLOW_FDIR_CMP(f1, f2, actions[0].type))
2704                 return 1;
2705         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
2706             FLOW_FDIR_CMP(f1, f2, queue))
2707                 return 1;
2708         return 0;
2709 }
2710
2711 /**
2712  * Search device flow list to find out a matched FDIR flow.
2713  *
2714  * @param dev
2715  *   Pointer to Ethernet device.
2716  * @param fdir_flow
2717  *   FDIR flow to lookup.
2718  *
2719  * @return
2720  *   Pointer of flow if found, NULL otherwise.
2721  */
2722 static struct rte_flow *
2723 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
2724 {
2725         struct mlx5_priv *priv = dev->data->dev_private;
2726         struct rte_flow *flow = NULL;
2727
2728         assert(fdir_flow);
2729         TAILQ_FOREACH(flow, &priv->flows, next) {
2730                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
2731                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
2732                                 dev->data->port_id, (void *)flow);
2733                         break;
2734                 }
2735         }
2736         return flow;
2737 }
2738
2739 /**
2740  * Add new flow director filter and store it in list.
2741  *
2742  * @param dev
2743  *   Pointer to Ethernet device.
2744  * @param fdir_filter
2745  *   Flow director filter to add.
2746  *
2747  * @return
2748  *   0 on success, a negative errno value otherwise and rte_errno is set.
2749  */
2750 static int
2751 flow_fdir_filter_add(struct rte_eth_dev *dev,
2752                      const struct rte_eth_fdir_filter *fdir_filter)
2753 {
2754         struct mlx5_priv *priv = dev->data->dev_private;
2755         struct mlx5_fdir *fdir_flow;
2756         struct rte_flow *flow;
2757         int ret;
2758
2759         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
2760         if (!fdir_flow) {
2761                 rte_errno = ENOMEM;
2762                 return -rte_errno;
2763         }
2764         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
2765         if (ret)
2766                 goto error;
2767         flow = flow_fdir_filter_lookup(dev, fdir_flow);
2768         if (flow) {
2769                 rte_errno = EEXIST;
2770                 goto error;
2771         }
2772         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
2773                                 fdir_flow->items, fdir_flow->actions, NULL);
2774         if (!flow)
2775                 goto error;
2776         assert(!flow->fdir);
2777         flow->fdir = fdir_flow;
2778         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
2779                 dev->data->port_id, (void *)flow);
2780         return 0;
2781 error:
2782         rte_free(fdir_flow);
2783         return -rte_errno;
2784 }
2785
2786 /**
2787  * Delete specific filter.
2788  *
2789  * @param dev
2790  *   Pointer to Ethernet device.
2791  * @param fdir_filter
2792  *   Filter to be deleted.
2793  *
2794  * @return
2795  *   0 on success, a negative errno value otherwise and rte_errno is set.
2796  */
2797 static int
2798 flow_fdir_filter_delete(struct rte_eth_dev *dev,
2799                         const struct rte_eth_fdir_filter *fdir_filter)
2800 {
2801         struct mlx5_priv *priv = dev->data->dev_private;
2802         struct rte_flow *flow;
2803         struct mlx5_fdir fdir_flow = {
2804                 .attr.group = 0,
2805         };
2806         int ret;
2807
2808         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
2809         if (ret)
2810                 return -rte_errno;
2811         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
2812         if (!flow) {
2813                 rte_errno = ENOENT;
2814                 return -rte_errno;
2815         }
2816         flow_list_destroy(dev, &priv->flows, flow);
2817         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
2818                 dev->data->port_id, (void *)flow);
2819         return 0;
2820 }
2821
2822 /**
2823  * Update queue for specific filter.
2824  *
2825  * @param dev
2826  *   Pointer to Ethernet device.
2827  * @param fdir_filter
2828  *   Filter to be updated.
2829  *
2830  * @return
2831  *   0 on success, a negative errno value otherwise and rte_errno is set.
2832  */
2833 static int
2834 flow_fdir_filter_update(struct rte_eth_dev *dev,
2835                         const struct rte_eth_fdir_filter *fdir_filter)
2836 {
2837         int ret;
2838
2839         ret = flow_fdir_filter_delete(dev, fdir_filter);
2840         if (ret)
2841                 return ret;
2842         return flow_fdir_filter_add(dev, fdir_filter);
2843 }
2844
2845 /**
2846  * Flush all filters.
2847  *
2848  * @param dev
2849  *   Pointer to Ethernet device.
2850  */
2851 static void
2852 flow_fdir_filter_flush(struct rte_eth_dev *dev)
2853 {
2854         struct mlx5_priv *priv = dev->data->dev_private;
2855
2856         mlx5_flow_list_flush(dev, &priv->flows);
2857 }
2858
2859 /**
2860  * Get flow director information.
2861  *
2862  * @param dev
2863  *   Pointer to Ethernet device.
2864  * @param[out] fdir_info
2865  *   Resulting flow director information.
2866  */
2867 static void
2868 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
2869 {
2870         struct rte_eth_fdir_masks *mask =
2871                 &dev->data->dev_conf.fdir_conf.mask;
2872
2873         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
2874         fdir_info->guarant_spc = 0;
2875         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
2876         fdir_info->max_flexpayload = 0;
2877         fdir_info->flow_types_mask[0] = 0;
2878         fdir_info->flex_payload_unit = 0;
2879         fdir_info->max_flex_payload_segment_num = 0;
2880         fdir_info->flex_payload_limit = 0;
2881         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
2882 }
2883
2884 /**
2885  * Deal with flow director operations.
2886  *
2887  * @param dev
2888  *   Pointer to Ethernet device.
2889  * @param filter_op
2890  *   Operation to perform.
2891  * @param arg
2892  *   Pointer to operation-specific structure.
2893  *
2894  * @return
2895  *   0 on success, a negative errno value otherwise and rte_errno is set.
2896  */
2897 static int
2898 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
2899                     void *arg)
2900 {
2901         enum rte_fdir_mode fdir_mode =
2902                 dev->data->dev_conf.fdir_conf.mode;
2903
2904         if (filter_op == RTE_ETH_FILTER_NOP)
2905                 return 0;
2906         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
2907             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
2908                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
2909                         dev->data->port_id, fdir_mode);
2910                 rte_errno = EINVAL;
2911                 return -rte_errno;
2912         }
2913         switch (filter_op) {
2914         case RTE_ETH_FILTER_ADD:
2915                 return flow_fdir_filter_add(dev, arg);
2916         case RTE_ETH_FILTER_UPDATE:
2917                 return flow_fdir_filter_update(dev, arg);
2918         case RTE_ETH_FILTER_DELETE:
2919                 return flow_fdir_filter_delete(dev, arg);
2920         case RTE_ETH_FILTER_FLUSH:
2921                 flow_fdir_filter_flush(dev);
2922                 break;
2923         case RTE_ETH_FILTER_INFO:
2924                 flow_fdir_info_get(dev, arg);
2925                 break;
2926         default:
2927                 DRV_LOG(DEBUG, "port %u unknown operation %u",
2928                         dev->data->port_id, filter_op);
2929                 rte_errno = EINVAL;
2930                 return -rte_errno;
2931         }
2932         return 0;
2933 }
2934
2935 /**
2936  * Manage filter operations.
2937  *
2938  * @param dev
2939  *   Pointer to Ethernet device structure.
2940  * @param filter_type
2941  *   Filter type.
2942  * @param filter_op
2943  *   Operation to perform.
2944  * @param arg
2945  *   Pointer to operation-specific structure.
2946  *
2947  * @return
2948  *   0 on success, a negative errno value otherwise and rte_errno is set.
2949  */
2950 int
2951 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
2952                      enum rte_filter_type filter_type,
2953                      enum rte_filter_op filter_op,
2954                      void *arg)
2955 {
2956         switch (filter_type) {
2957         case RTE_ETH_FILTER_GENERIC:
2958                 if (filter_op != RTE_ETH_FILTER_GET) {
2959                         rte_errno = EINVAL;
2960                         return -rte_errno;
2961                 }
2962                 *(const void **)arg = &mlx5_flow_ops;
2963                 return 0;
2964         case RTE_ETH_FILTER_FDIR:
2965                 return flow_fdir_ctrl_func(dev, filter_op, arg);
2966         default:
2967                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
2968                         dev->data->port_id, filter_type);
2969                 rte_errno = ENOTSUP;
2970                 return -rte_errno;
2971         }
2972         return 0;
2973 }