drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_eth_ctrl.h>
  25 #include <rte_ethdev_driver.h>
  26 #include <rte_flow.h>
  27 #include <rte_flow_driver.h>
  28 #include <rte_malloc.h>
  29 #include <rte_ip.h>
  30
  31 #include "mlx5.h"
  32 #include "mlx5_defs.h"
  33 #include "mlx5_prm.h"
  34 #include "mlx5_glue.h"
  35 #include "mlx5_flow.h"
  36
  37 /* Dev ops structure defined in mlx5.c */
  38 extern const struct eth_dev_ops mlx5_dev_ops;
  39 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  40
  41 /** Device flow drivers. */
  42 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  43 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  44 #endif
  45 extern const struct mlx5_flow_driver_ops mlx5_flow_tcf_drv_ops;
  46 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  47
  48 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  49
  50 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  51         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  52 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  53         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  54 #endif
  55         [MLX5_FLOW_TYPE_TCF] = &mlx5_flow_tcf_drv_ops,
  56         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  57         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  58 };
  59
  60 enum mlx5_expansion {
  61         MLX5_EXPANSION_ROOT,
  62         MLX5_EXPANSION_ROOT_OUTER,
  63         MLX5_EXPANSION_ROOT_ETH_VLAN,
  64         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  65         MLX5_EXPANSION_OUTER_ETH,
  66         MLX5_EXPANSION_OUTER_ETH_VLAN,
  67         MLX5_EXPANSION_OUTER_VLAN,
  68         MLX5_EXPANSION_OUTER_IPV4,
  69         MLX5_EXPANSION_OUTER_IPV4_UDP,
  70         MLX5_EXPANSION_OUTER_IPV4_TCP,
  71         MLX5_EXPANSION_OUTER_IPV6,
  72         MLX5_EXPANSION_OUTER_IPV6_UDP,
  73         MLX5_EXPANSION_OUTER_IPV6_TCP,
  74         MLX5_EXPANSION_VXLAN,
  75         MLX5_EXPANSION_VXLAN_GPE,
  76         MLX5_EXPANSION_GRE,
  77         MLX5_EXPANSION_MPLS,
  78         MLX5_EXPANSION_ETH,
  79         MLX5_EXPANSION_ETH_VLAN,
  80         MLX5_EXPANSION_VLAN,
  81         MLX5_EXPANSION_IPV4,
  82         MLX5_EXPANSION_IPV4_UDP,
  83         MLX5_EXPANSION_IPV4_TCP,
  84         MLX5_EXPANSION_IPV6,
  85         MLX5_EXPANSION_IPV6_UDP,
  86         MLX5_EXPANSION_IPV6_TCP,
  87 };
  88
  89 /** Supported expansion of items. */
  90 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  91         [MLX5_EXPANSION_ROOT] = {
  92                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  93                                                  MLX5_EXPANSION_IPV4,
  94                                                  MLX5_EXPANSION_IPV6),
  95                 .type = RTE_FLOW_ITEM_TYPE_END,
  96         },
  97         [MLX5_EXPANSION_ROOT_OUTER] = {
  98                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  99                                                  MLX5_EXPANSION_OUTER_IPV4,
 100                                                  MLX5_EXPANSION_OUTER_IPV6),
 101                 .type = RTE_FLOW_ITEM_TYPE_END,
 102         },
 103         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 104                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 105                 .type = RTE_FLOW_ITEM_TYPE_END,
 106         },
 107         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 108                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 109                 .type = RTE_FLOW_ITEM_TYPE_END,
 110         },
 111         [MLX5_EXPANSION_OUTER_ETH] = {
 112                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 113                                                  MLX5_EXPANSION_OUTER_IPV6,
 114                                                  MLX5_EXPANSION_MPLS),
 115                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 116                 .rss_types = 0,
 117         },
 118         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 119                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 120                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 121                 .rss_types = 0,
 122         },
 123         [MLX5_EXPANSION_OUTER_VLAN] = {
 124                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 125                                                  MLX5_EXPANSION_OUTER_IPV6),
 126                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 127         },
 128         [MLX5_EXPANSION_OUTER_IPV4] = {
 129                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 130                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 131                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 132                          MLX5_EXPANSION_GRE),
 133                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 134                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 135                         ETH_RSS_NONFRAG_IPV4_OTHER,
 136         },
 137         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 138                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 139                                                  MLX5_EXPANSION_VXLAN_GPE),
 140                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 141                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 142         },
 143         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 144                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 145                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 146         },
 147         [MLX5_EXPANSION_OUTER_IPV6] = {
 148                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 149                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 150                          MLX5_EXPANSION_OUTER_IPV6_TCP),
 151                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 152                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 153                         ETH_RSS_NONFRAG_IPV6_OTHER,
 154         },
 155         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 156                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 157                                                  MLX5_EXPANSION_VXLAN_GPE),
 158                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 159                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 160         },
 161         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 162                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 163                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 164         },
 165         [MLX5_EXPANSION_VXLAN] = {
 166                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 167                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 168         },
 169         [MLX5_EXPANSION_VXLAN_GPE] = {
 170                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 171                                                  MLX5_EXPANSION_IPV4,
 172                                                  MLX5_EXPANSION_IPV6),
 173                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 174         },
 175         [MLX5_EXPANSION_GRE] = {
 176                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 177                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 178         },
 179         [MLX5_EXPANSION_MPLS] = {
 180                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 181                                                  MLX5_EXPANSION_IPV6),
 182                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 183         },
 184         [MLX5_EXPANSION_ETH] = {
 185                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 186                                                  MLX5_EXPANSION_IPV6),
 187                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 188         },
 189         [MLX5_EXPANSION_ETH_VLAN] = {
 190                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 191                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 192         },
 193         [MLX5_EXPANSION_VLAN] = {
 194                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 195                                                  MLX5_EXPANSION_IPV6),
 196                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 197         },
 198         [MLX5_EXPANSION_IPV4] = {
 199                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 200                                                  MLX5_EXPANSION_IPV4_TCP),
 201                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 202                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 203                         ETH_RSS_NONFRAG_IPV4_OTHER,
 204         },
 205         [MLX5_EXPANSION_IPV4_UDP] = {
 206                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 207                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 208         },
 209         [MLX5_EXPANSION_IPV4_TCP] = {
 210                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 211                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 212         },
 213         [MLX5_EXPANSION_IPV6] = {
 214                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 215                                                  MLX5_EXPANSION_IPV6_TCP),
 216                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 217                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 218                         ETH_RSS_NONFRAG_IPV6_OTHER,
 219         },
 220         [MLX5_EXPANSION_IPV6_UDP] = {
 221                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 222                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 223         },
 224         [MLX5_EXPANSION_IPV6_TCP] = {
 225                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 226                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 227         },
 228 };
 229
 230 static const struct rte_flow_ops mlx5_flow_ops = {
 231         .validate = mlx5_flow_validate,
 232         .create = mlx5_flow_create,
 233         .destroy = mlx5_flow_destroy,
 234         .flush = mlx5_flow_flush,
 235         .isolate = mlx5_flow_isolate,
 236         .query = mlx5_flow_query,
 237 };
 238
 239 /* Convert FDIR request to Generic flow. */
 240 struct mlx5_fdir {
 241         struct rte_flow_attr attr;
 242         struct rte_flow_item items[4];
 243         struct rte_flow_item_eth l2;
 244         struct rte_flow_item_eth l2_mask;
 245         union {
 246                 struct rte_flow_item_ipv4 ipv4;
 247                 struct rte_flow_item_ipv6 ipv6;
 248         } l3;
 249         union {
 250                 struct rte_flow_item_ipv4 ipv4;
 251                 struct rte_flow_item_ipv6 ipv6;
 252         } l3_mask;
 253         union {
 254                 struct rte_flow_item_udp udp;
 255                 struct rte_flow_item_tcp tcp;
 256         } l4;
 257         union {
 258                 struct rte_flow_item_udp udp;
 259                 struct rte_flow_item_tcp tcp;
 260         } l4_mask;
 261         struct rte_flow_action actions[2];
 262         struct rte_flow_action_queue queue;
 263 };
 264
 265 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 266 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 267         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 268 };
 269
 270 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 271 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 272         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 273         { 9, 10, 11 }, { 12, 13, 14 },
 274 };
 275
 276 /* Tunnel information. */
 277 struct mlx5_flow_tunnel_info {
 278         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 279         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 280 };
 281
 282 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 283         {
 284                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 285                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 286         },
 287         {
 288                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 289                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 290         },
 291         {
 292                 .tunnel = MLX5_FLOW_LAYER_GRE,
 293                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 294         },
 295         {
 296                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 297                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE | 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 {
 319                 struct ibv_flow_attr attr;
 320                 struct ibv_flow_spec_eth eth;
 321                 struct ibv_flow_spec_action_drop drop;
 322         } flow_attr = {
 323                 .attr = {
 324                         .num_of_specs = 2,
 325                 },
 326                 .eth = {
 327                         .type = IBV_FLOW_SPEC_ETH,
 328                         .size = sizeof(struct ibv_flow_spec_eth),
 329                 },
 330                 .drop = {
 331                         .size = sizeof(struct ibv_flow_spec_action_drop),
 332                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 333                 },
 334         };
 335         struct ibv_flow *flow;
 336         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 337         uint16_t vprio[] = { 8, 16 };
 338         int i;
 339         int priority = 0;
 340
 341         if (!drop) {
 342                 rte_errno = ENOTSUP;
 343                 return -rte_errno;
 344         }
 345         for (i = 0; i != RTE_DIM(vprio); i++) {
 346                 flow_attr.attr.priority = vprio[i] - 1;
 347                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 348                 if (!flow)
 349                         break;
 350                 claim_zero(mlx5_glue->destroy_flow(flow));
 351                 priority = vprio[i];
 352         }
 353         switch (priority) {
 354         case 8:
 355                 priority = RTE_DIM(priority_map_3);
 356                 break;
 357         case 16:
 358                 priority = RTE_DIM(priority_map_5);
 359                 break;
 360         default:
 361                 rte_errno = ENOTSUP;
 362                 DRV_LOG(ERR,
 363                         "port %u verbs maximum priority: %d expected 8/16",
 364                         dev->data->port_id, vprio[i]);
 365                 return -rte_errno;
 366         }
 367         mlx5_hrxq_drop_release(dev);
 368         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 369                 dev->data->port_id, priority);
 370         return priority;
 371 }
 372
 373 /**
 374  * Adjust flow priority based on the highest layer and the request priority.
 375  *
 376  * @param[in] dev
 377  *   Pointer to the Ethernet device structure.
 378  * @param[in] priority
 379  *   The rule base priority.
 380  * @param[in] subpriority
 381  *   The priority based on the items.
 382  *
 383  * @return
 384  *   The new priority.
 385  */
 386 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 387                                    uint32_t subpriority)
 388 {
 389         uint32_t res = 0;
 390         struct priv *priv = dev->data->dev_private;
 391
 392         switch (priv->config.flow_prio) {
 393         case RTE_DIM(priority_map_3):
 394                 res = priority_map_3[priority][subpriority];
 395                 break;
 396         case RTE_DIM(priority_map_5):
 397                 res = priority_map_5[priority][subpriority];
 398                 break;
 399         }
 400         return  res;
 401 }
 402
 403 /**
 404  * Verify the @p item specifications (spec, last, mask) are compatible with the
 405  * NIC capabilities.
 406  *
 407  * @param[in] item
 408  *   Item specification.
 409  * @param[in] mask
 410  *   @p item->mask or flow default bit-masks.
 411  * @param[in] nic_mask
 412  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 413  * @param[in] size
 414  *   Bit-masks size in bytes.
 415  * @param[out] error
 416  *   Pointer to error structure.
 417  *
 418  * @return
 419  *   0 on success, a negative errno value otherwise and rte_errno is set.
 420  */
 421 int
 422 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 423                           const uint8_t *mask,
 424                           const uint8_t *nic_mask,
 425                           unsigned int size,
 426                           struct rte_flow_error *error)
 427 {
 428         unsigned int i;
 429
 430         assert(nic_mask);
 431         for (i = 0; i < size; ++i)
 432                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 433                         return rte_flow_error_set(error, ENOTSUP,
 434                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 435                                                   item,
 436                                                   "mask enables non supported"
 437                                                   " bits");
 438         if (!item->spec && (item->mask || item->last))
 439                 return rte_flow_error_set(error, EINVAL,
 440                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 441                                           "mask/last without a spec is not"
 442                                           " supported");
 443         if (item->spec && item->last) {
 444                 uint8_t spec[size];
 445                 uint8_t last[size];
 446                 unsigned int i;
 447                 int ret;
 448
 449                 for (i = 0; i < size; ++i) {
 450                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 451                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 452                 }
 453                 ret = memcmp(spec, last, size);
 454                 if (ret != 0)
 455                         return rte_flow_error_set(error, EINVAL,
 456                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 457                                                   item,
 458                                                   "range is not valid");
 459         }
 460         return 0;
 461 }
 462
 463 /**
 464  * Adjust the hash fields according to the @p flow information.
 465  *
 466  * @param[in] dev_flow.
 467  *   Pointer to the mlx5_flow.
 468  * @param[in] tunnel
 469  *   1 when the hash field is for a tunnel item.
 470  * @param[in] layer_types
 471  *   ETH_RSS_* types.
 472  * @param[in] hash_fields
 473  *   Item hash fields.
 474  *
 475  * @return
 476  *   The hash fileds that should be used.
 477  */
 478 uint64_t
 479 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 480                             int tunnel __rte_unused, uint64_t layer_types,
 481                             uint64_t hash_fields)
 482 {
 483         struct rte_flow *flow = dev_flow->flow;
 484 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 485         int rss_request_inner = flow->rss.level >= 2;
 486
 487         /* Check RSS hash level for tunnel. */
 488         if (tunnel && rss_request_inner)
 489                 hash_fields |= IBV_RX_HASH_INNER;
 490         else if (tunnel || rss_request_inner)
 491                 return 0;
 492 #endif
 493         /* Check if requested layer matches RSS hash fields. */
 494         if (!(flow->rss.types & layer_types))
 495                 return 0;
 496         return hash_fields;
 497 }
 498
 499 /**
 500  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 501  * if several tunnel rules are used on this queue, the tunnel ptype will be
 502  * cleared.
 503  *
 504  * @param rxq_ctrl
 505  *   Rx queue to update.
 506  */
 507 static void
 508 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 509 {
 510         unsigned int i;
 511         uint32_t tunnel_ptype = 0;
 512
 513         /* Look up for the ptype to use. */
 514         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 515                 if (!rxq_ctrl->flow_tunnels_n[i])
 516                         continue;
 517                 if (!tunnel_ptype) {
 518                         tunnel_ptype = tunnels_info[i].ptype;
 519                 } else {
 520                         tunnel_ptype = 0;
 521                         break;
 522                 }
 523         }
 524         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 525 }
 526
 527 /**
 528  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 529  * flow.
 530  *
 531  * @param[in] dev
 532  *   Pointer to the Ethernet device structure.
 533  * @param[in] dev_flow
 534  *   Pointer to device flow structure.
 535  */
 536 static void
 537 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 538 {
 539         struct priv *priv = dev->data->dev_private;
 540         struct rte_flow *flow = dev_flow->flow;
 541         const int mark = !!(flow->actions &
 542                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 543         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 544         unsigned int i;
 545
 546         for (i = 0; i != flow->rss.queue_num; ++i) {
 547                 int idx = (*flow->queue)[i];
 548                 struct mlx5_rxq_ctrl *rxq_ctrl =
 549                         container_of((*priv->rxqs)[idx],
 550                                      struct mlx5_rxq_ctrl, rxq);
 551
 552                 if (mark) {
 553                         rxq_ctrl->rxq.mark = 1;
 554                         rxq_ctrl->flow_mark_n++;
 555                 }
 556                 if (tunnel) {
 557                         unsigned int j;
 558
 559                         /* Increase the counter matching the flow. */
 560                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 561                                 if ((tunnels_info[j].tunnel &
 562                                      dev_flow->layers) ==
 563                                     tunnels_info[j].tunnel) {
 564                                         rxq_ctrl->flow_tunnels_n[j]++;
 565                                         break;
 566                                 }
 567                         }
 568                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 569                 }
 570         }
 571 }
 572
 573 /**
 574  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 575  *
 576  * @param[in] dev
 577  *   Pointer to the Ethernet device structure.
 578  * @param[in] flow
 579  *   Pointer to flow structure.
 580  */
 581 static void
 582 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 583 {
 584         struct mlx5_flow *dev_flow;
 585
 586         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 587                 flow_drv_rxq_flags_set(dev, dev_flow);
 588 }
 589
 590 /**
 591  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 592  * device flow if no other flow uses it with the same kind of request.
 593  *
 594  * @param dev
 595  *   Pointer to Ethernet device.
 596  * @param[in] dev_flow
 597  *   Pointer to the device flow.
 598  */
 599 static void
 600 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 601 {
 602         struct priv *priv = dev->data->dev_private;
 603         struct rte_flow *flow = dev_flow->flow;
 604         const int mark = !!(flow->actions &
 605                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 606         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 607         unsigned int i;
 608
 609         assert(dev->data->dev_started);
 610         for (i = 0; i != flow->rss.queue_num; ++i) {
 611                 int idx = (*flow->queue)[i];
 612                 struct mlx5_rxq_ctrl *rxq_ctrl =
 613                         container_of((*priv->rxqs)[idx],
 614                                      struct mlx5_rxq_ctrl, rxq);
 615
 616                 if (mark) {
 617                         rxq_ctrl->flow_mark_n--;
 618                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 619                 }
 620                 if (tunnel) {
 621                         unsigned int j;
 622
 623                         /* Decrease the counter matching the flow. */
 624                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 625                                 if ((tunnels_info[j].tunnel &
 626                                      dev_flow->layers) ==
 627                                     tunnels_info[j].tunnel) {
 628                                         rxq_ctrl->flow_tunnels_n[j]--;
 629                                         break;
 630                                 }
 631                         }
 632                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 633                 }
 634         }
 635 }
 636
 637 /**
 638  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 639  * @p flow if no other flow uses it with the same kind of request.
 640  *
 641  * @param dev
 642  *   Pointer to Ethernet device.
 643  * @param[in] flow
 644  *   Pointer to the flow.
 645  */
 646 static void
 647 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 648 {
 649         struct mlx5_flow *dev_flow;
 650
 651         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 652                 flow_drv_rxq_flags_trim(dev, dev_flow);
 653 }
 654
 655 /**
 656  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 657  *
 658  * @param dev
 659  *   Pointer to Ethernet device.
 660  */
 661 static void
 662 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 663 {
 664         struct priv *priv = dev->data->dev_private;
 665         unsigned int i;
 666
 667         for (i = 0; i != priv->rxqs_n; ++i) {
 668                 struct mlx5_rxq_ctrl *rxq_ctrl;
 669                 unsigned int j;
 670
 671                 if (!(*priv->rxqs)[i])
 672                         continue;
 673                 rxq_ctrl = container_of((*priv->rxqs)[i],
 674                                         struct mlx5_rxq_ctrl, rxq);
 675                 rxq_ctrl->flow_mark_n = 0;
 676                 rxq_ctrl->rxq.mark = 0;
 677                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 678                         rxq_ctrl->flow_tunnels_n[j] = 0;
 679                 rxq_ctrl->rxq.tunnel = 0;
 680         }
 681 }
 682
 683 /*
 684  * Validate the flag action.
 685  *
 686  * @param[in] action_flags
 687  *   Bit-fields that holds the actions detected until now.
 688  * @param[in] attr
 689  *   Attributes of flow that includes this action.
 690  * @param[out] error
 691  *   Pointer to error structure.
 692  *
 693  * @return
 694  *   0 on success, a negative errno value otherwise and rte_errno is set.
 695  */
 696 int
 697 mlx5_flow_validate_action_flag(uint64_t action_flags,
 698                                const struct rte_flow_attr *attr,
 699                                struct rte_flow_error *error)
 700 {
 701
 702         if (action_flags & MLX5_FLOW_ACTION_DROP)
 703                 return rte_flow_error_set(error, EINVAL,
 704                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 705                                           "can't drop and flag in same flow");
 706         if (action_flags & MLX5_FLOW_ACTION_MARK)
 707                 return rte_flow_error_set(error, EINVAL,
 708                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 709                                           "can't mark and flag in same flow");
 710         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 711                 return rte_flow_error_set(error, EINVAL,
 712                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 713                                           "can't have 2 flag"
 714                                           " actions in same flow");
 715         if (attr->egress)
 716                 return rte_flow_error_set(error, ENOTSUP,
 717                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 718                                           "flag action not supported for "
 719                                           "egress");
 720         return 0;
 721 }
 722
 723 /*
 724  * Validate the mark action.
 725  *
 726  * @param[in] action
 727  *   Pointer to the queue action.
 728  * @param[in] action_flags
 729  *   Bit-fields that holds the actions detected until now.
 730  * @param[in] attr
 731  *   Attributes of flow that includes this action.
 732  * @param[out] error
 733  *   Pointer to error structure.
 734  *
 735  * @return
 736  *   0 on success, a negative errno value otherwise and rte_errno is set.
 737  */
 738 int
 739 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 740                                uint64_t action_flags,
 741                                const struct rte_flow_attr *attr,
 742                                struct rte_flow_error *error)
 743 {
 744         const struct rte_flow_action_mark *mark = action->conf;
 745
 746         if (!mark)
 747                 return rte_flow_error_set(error, EINVAL,
 748                                           RTE_FLOW_ERROR_TYPE_ACTION,
 749                                           action,
 750                                           "configuration cannot be null");
 751         if (mark->id >= MLX5_FLOW_MARK_MAX)
 752                 return rte_flow_error_set(error, EINVAL,
 753                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 754                                           &mark->id,
 755                                           "mark id must in 0 <= id < "
 756                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 757         if (action_flags & MLX5_FLOW_ACTION_DROP)
 758                 return rte_flow_error_set(error, EINVAL,
 759                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 760                                           "can't drop and mark in same flow");
 761         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 762                 return rte_flow_error_set(error, EINVAL,
 763                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 764                                           "can't flag and mark in same flow");
 765         if (action_flags & MLX5_FLOW_ACTION_MARK)
 766                 return rte_flow_error_set(error, EINVAL,
 767                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 768                                           "can't have 2 mark actions in same"
 769                                           " flow");
 770         if (attr->egress)
 771                 return rte_flow_error_set(error, ENOTSUP,
 772                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 773                                           "mark action not supported for "
 774                                           "egress");
 775         return 0;
 776 }
 777
 778 /*
 779  * Validate the drop action.
 780  *
 781  * @param[in] action_flags
 782  *   Bit-fields that holds the actions detected until now.
 783  * @param[in] attr
 784  *   Attributes of flow that includes this action.
 785  * @param[out] error
 786  *   Pointer to error structure.
 787  *
 788  * @return
 789  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 790  */
 791 int
 792 mlx5_flow_validate_action_drop(uint64_t action_flags,
 793                                const struct rte_flow_attr *attr,
 794                                struct rte_flow_error *error)
 795 {
 796         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 797                 return rte_flow_error_set(error, EINVAL,
 798                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 799                                           "can't drop and flag in same flow");
 800         if (action_flags & MLX5_FLOW_ACTION_MARK)
 801                 return rte_flow_error_set(error, EINVAL,
 802                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 803                                           "can't drop and mark in same flow");
 804         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 805                 return rte_flow_error_set(error, EINVAL,
 806                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 807                                           "can't have 2 fate actions in"
 808                                           " same flow");
 809         if (attr->egress)
 810                 return rte_flow_error_set(error, ENOTSUP,
 811                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 812                                           "drop action not supported for "
 813                                           "egress");
 814         return 0;
 815 }
 816
 817 /*
 818  * Validate the queue action.
 819  *
 820  * @param[in] action
 821  *   Pointer to the queue action.
 822  * @param[in] action_flags
 823  *   Bit-fields that holds the actions detected until now.
 824  * @param[in] dev
 825  *   Pointer to the Ethernet device structure.
 826  * @param[in] attr
 827  *   Attributes of flow that includes this action.
 828  * @param[out] error
 829  *   Pointer to error structure.
 830  *
 831  * @return
 832  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 833  */
 834 int
 835 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
 836                                 uint64_t action_flags,
 837                                 struct rte_eth_dev *dev,
 838                                 const struct rte_flow_attr *attr,
 839                                 struct rte_flow_error *error)
 840 {
 841         struct priv *priv = dev->data->dev_private;
 842         const struct rte_flow_action_queue *queue = action->conf;
 843
 844         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 845                 return rte_flow_error_set(error, EINVAL,
 846                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 847                                           "can't have 2 fate actions in"
 848                                           " same flow");
 849         if (queue->index >= priv->rxqs_n)
 850                 return rte_flow_error_set(error, EINVAL,
 851                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 852                                           &queue->index,
 853                                           "queue index out of range");
 854         if (!(*priv->rxqs)[queue->index])
 855                 return rte_flow_error_set(error, EINVAL,
 856                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 857                                           &queue->index,
 858                                           "queue is not configured");
 859         if (attr->egress)
 860                 return rte_flow_error_set(error, ENOTSUP,
 861                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 862                                           "queue action not supported for "
 863                                           "egress");
 864         return 0;
 865 }
 866
 867 /*
 868  * Validate the rss action.
 869  *
 870  * @param[in] action
 871  *   Pointer to the queue action.
 872  * @param[in] action_flags
 873  *   Bit-fields that holds the actions detected until now.
 874  * @param[in] dev
 875  *   Pointer to the Ethernet device structure.
 876  * @param[in] attr
 877  *   Attributes of flow that includes this action.
 878  * @param[out] error
 879  *   Pointer to error structure.
 880  *
 881  * @return
 882  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 883  */
 884 int
 885 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
 886                               uint64_t action_flags,
 887                               struct rte_eth_dev *dev,
 888                               const struct rte_flow_attr *attr,
 889                               struct rte_flow_error *error)
 890 {
 891         struct priv *priv = dev->data->dev_private;
 892         const struct rte_flow_action_rss *rss = action->conf;
 893         unsigned int i;
 894
 895         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 896                 return rte_flow_error_set(error, EINVAL,
 897                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 898                                           "can't have 2 fate actions"
 899                                           " in same flow");
 900         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
 901             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
 902                 return rte_flow_error_set(error, ENOTSUP,
 903                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 904                                           &rss->func,
 905                                           "RSS hash function not supported");
 906 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 907         if (rss->level > 2)
 908 #else
 909         if (rss->level > 1)
 910 #endif
 911                 return rte_flow_error_set(error, ENOTSUP,
 912                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 913                                           &rss->level,
 914                                           "tunnel RSS is not supported");
 915         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
 916         if (rss->key_len == 0 && rss->key != NULL)
 917                 return rte_flow_error_set(error, ENOTSUP,
 918                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 919                                           &rss->key_len,
 920                                           "RSS hash key length 0");
 921         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
 922                 return rte_flow_error_set(error, ENOTSUP,
 923                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 924                                           &rss->key_len,
 925                                           "RSS hash key too small");
 926         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
 927                 return rte_flow_error_set(error, ENOTSUP,
 928                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 929                                           &rss->key_len,
 930                                           "RSS hash key too large");
 931         if (rss->queue_num > priv->config.ind_table_max_size)
 932                 return rte_flow_error_set(error, ENOTSUP,
 933                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 934                                           &rss->queue_num,
 935                                           "number of queues too large");
 936         if (rss->types & MLX5_RSS_HF_MASK)
 937                 return rte_flow_error_set(error, ENOTSUP,
 938                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 939                                           &rss->types,
 940                                           "some RSS protocols are not"
 941                                           " supported");
 942         for (i = 0; i != rss->queue_num; ++i) {
 943                 if (!(*priv->rxqs)[rss->queue[i]])
 944                         return rte_flow_error_set
 945                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 946                                  &rss->queue[i], "queue is not configured");
 947         }
 948         if (attr->egress)
 949                 return rte_flow_error_set(error, ENOTSUP,
 950                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 951                                           "rss action not supported for "
 952                                           "egress");
 953         return 0;
 954 }
 955
 956 /*
 957  * Validate the count action.
 958  *
 959  * @param[in] dev
 960  *   Pointer to the Ethernet device structure.
 961  * @param[in] attr
 962  *   Attributes of flow that includes this action.
 963  * @param[out] error
 964  *   Pointer to error structure.
 965  *
 966  * @return
 967  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 968  */
 969 int
 970 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
 971                                 const struct rte_flow_attr *attr,
 972                                 struct rte_flow_error *error)
 973 {
 974         if (attr->egress)
 975                 return rte_flow_error_set(error, ENOTSUP,
 976                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 977                                           "count action not supported for "
 978                                           "egress");
 979         return 0;
 980 }
 981
 982 /**
 983  * Verify the @p attributes will be correctly understood by the NIC and store
 984  * them in the @p flow if everything is correct.
 985  *
 986  * @param[in] dev
 987  *   Pointer to the Ethernet device structure.
 988  * @param[in] attributes
 989  *   Pointer to flow attributes
 990  * @param[out] error
 991  *   Pointer to error structure.
 992  *
 993  * @return
 994  *   0 on success, a negative errno value otherwise and rte_errno is set.
 995  */
 996 int
 997 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
 998                               const struct rte_flow_attr *attributes,
 999                               struct rte_flow_error *error)
1000 {
1001         struct priv *priv = dev->data->dev_private;
1002         uint32_t priority_max = priv->config.flow_prio - 1;
1003
1004         if (attributes->group)
1005                 return rte_flow_error_set(error, ENOTSUP,
1006                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1007                                           NULL, "groups is not supported");
1008         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1009             attributes->priority >= priority_max)
1010                 return rte_flow_error_set(error, ENOTSUP,
1011                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1012                                           NULL, "priority out of range");
1013         if (attributes->egress)
1014                 return rte_flow_error_set(error, ENOTSUP,
1015                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1016                                           "egress is not supported");
1017         if (attributes->transfer)
1018                 return rte_flow_error_set(error, ENOTSUP,
1019                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1020                                           NULL, "transfer is not supported");
1021         if (!attributes->ingress)
1022                 return rte_flow_error_set(error, EINVAL,
1023                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1024                                           NULL,
1025                                           "ingress attribute is mandatory");
1026         return 0;
1027 }
1028
1029 /**
1030  * Validate Ethernet item.
1031  *
1032  * @param[in] item
1033  *   Item specification.
1034  * @param[in] item_flags
1035  *   Bit-fields that holds the items detected until now.
1036  * @param[out] error
1037  *   Pointer to error structure.
1038  *
1039  * @return
1040  *   0 on success, a negative errno value otherwise and rte_errno is set.
1041  */
1042 int
1043 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1044                             uint64_t item_flags,
1045                             struct rte_flow_error *error)
1046 {
1047         const struct rte_flow_item_eth *mask = item->mask;
1048         const struct rte_flow_item_eth nic_mask = {
1049                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1050                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1051                 .type = RTE_BE16(0xffff),
1052         };
1053         int ret;
1054         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1055         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1056                                        MLX5_FLOW_LAYER_OUTER_L2;
1057
1058         if (item_flags & ethm)
1059                 return rte_flow_error_set(error, ENOTSUP,
1060                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1061                                           "multiple L2 layers not supported");
1062         if (!mask)
1063                 mask = &rte_flow_item_eth_mask;
1064         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1065                                         (const uint8_t *)&nic_mask,
1066                                         sizeof(struct rte_flow_item_eth),
1067                                         error);
1068         return ret;
1069 }
1070
1071 /**
1072  * Validate VLAN item.
1073  *
1074  * @param[in] item
1075  *   Item specification.
1076  * @param[in] item_flags
1077  *   Bit-fields that holds the items detected until now.
1078  * @param[out] error
1079  *   Pointer to error structure.
1080  *
1081  * @return
1082  *   0 on success, a negative errno value otherwise and rte_errno is set.
1083  */
1084 int
1085 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1086                              uint64_t item_flags,
1087                              struct rte_flow_error *error)
1088 {
1089         const struct rte_flow_item_vlan *spec = item->spec;
1090         const struct rte_flow_item_vlan *mask = item->mask;
1091         const struct rte_flow_item_vlan nic_mask = {
1092                 .tci = RTE_BE16(0x0fff),
1093                 .inner_type = RTE_BE16(0xffff),
1094         };
1095         uint16_t vlan_tag = 0;
1096         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1097         int ret;
1098         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1099                                         MLX5_FLOW_LAYER_INNER_L4) :
1100                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1101                                         MLX5_FLOW_LAYER_OUTER_L4);
1102         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1103                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1104
1105         if (item_flags & vlanm)
1106                 return rte_flow_error_set(error, EINVAL,
1107                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1108                                           "multiple VLAN layers not supported");
1109         else if ((item_flags & l34m) != 0)
1110                 return rte_flow_error_set(error, EINVAL,
1111                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1112                                           "L2 layer cannot follow L3/L4 layer");
1113         if (!mask)
1114                 mask = &rte_flow_item_vlan_mask;
1115         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1116                                         (const uint8_t *)&nic_mask,
1117                                         sizeof(struct rte_flow_item_vlan),
1118                                         error);
1119         if (ret)
1120                 return ret;
1121         if (spec) {
1122                 vlan_tag = spec->tci;
1123                 vlan_tag &= mask->tci;
1124         }
1125         /*
1126          * From verbs perspective an empty VLAN is equivalent
1127          * to a packet without VLAN layer.
1128          */
1129         if (!vlan_tag)
1130                 return rte_flow_error_set(error, EINVAL,
1131                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1132                                           item->spec,
1133                                           "VLAN cannot be empty");
1134         return 0;
1135 }
1136
1137 /**
1138  * Validate IPV4 item.
1139  *
1140  * @param[in] item
1141  *   Item specification.
1142  * @param[in] item_flags
1143  *   Bit-fields that holds the items detected until now.
1144  * @param[out] error
1145  *   Pointer to error structure.
1146  *
1147  * @return
1148  *   0 on success, a negative errno value otherwise and rte_errno is set.
1149  */
1150 int
1151 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1152                              uint64_t item_flags,
1153                              struct rte_flow_error *error)
1154 {
1155         const struct rte_flow_item_ipv4 *mask = item->mask;
1156         const struct rte_flow_item_ipv4 nic_mask = {
1157                 .hdr = {
1158                         .src_addr = RTE_BE32(0xffffffff),
1159                         .dst_addr = RTE_BE32(0xffffffff),
1160                         .type_of_service = 0xff,
1161                         .next_proto_id = 0xff,
1162                 },
1163         };
1164         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1165         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1166                                       MLX5_FLOW_LAYER_OUTER_L3;
1167         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1168                                       MLX5_FLOW_LAYER_OUTER_L4;
1169         int ret;
1170
1171         if (item_flags & l3m)
1172                 return rte_flow_error_set(error, ENOTSUP,
1173                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1174                                           "multiple L3 layers not supported");
1175         else if (item_flags & l4m)
1176                 return rte_flow_error_set(error, EINVAL,
1177                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1178                                           "L3 cannot follow an L4 layer.");
1179         if (!mask)
1180                 mask = &rte_flow_item_ipv4_mask;
1181         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1182                                         (const uint8_t *)&nic_mask,
1183                                         sizeof(struct rte_flow_item_ipv4),
1184                                         error);
1185         if (ret < 0)
1186                 return ret;
1187         return 0;
1188 }
1189
1190 /**
1191  * Validate IPV6 item.
1192  *
1193  * @param[in] item
1194  *   Item specification.
1195  * @param[in] item_flags
1196  *   Bit-fields that holds the items detected until now.
1197  * @param[out] error
1198  *   Pointer to error structure.
1199  *
1200  * @return
1201  *   0 on success, a negative errno value otherwise and rte_errno is set.
1202  */
1203 int
1204 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1205                              uint64_t item_flags,
1206                              struct rte_flow_error *error)
1207 {
1208         const struct rte_flow_item_ipv6 *mask = item->mask;
1209         const struct rte_flow_item_ipv6 nic_mask = {
1210                 .hdr = {
1211                         .src_addr =
1212                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1213                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1214                         .dst_addr =
1215                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1216                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1217                         .vtc_flow = RTE_BE32(0xffffffff),
1218                         .proto = 0xff,
1219                         .hop_limits = 0xff,
1220                 },
1221         };
1222         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1223         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1224                                       MLX5_FLOW_LAYER_OUTER_L3;
1225         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1226                                       MLX5_FLOW_LAYER_OUTER_L4;
1227         int ret;
1228
1229         if (item_flags & l3m)
1230                 return rte_flow_error_set(error, ENOTSUP,
1231                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1232                                           "multiple L3 layers not supported");
1233         else if (item_flags & l4m)
1234                 return rte_flow_error_set(error, EINVAL,
1235                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1236                                           "L3 cannot follow an L4 layer.");
1237         /*
1238          * IPv6 is not recognised by the NIC inside a GRE tunnel.
1239          * Such support has to be disabled as the rule will be
1240          * accepted.  Issue reproduced with Mellanox OFED 4.3-3.0.2.1 and
1241          * Mellanox OFED 4.4-1.0.0.0.
1242          */
1243         if (tunnel && item_flags & MLX5_FLOW_LAYER_GRE)
1244                 return rte_flow_error_set(error, ENOTSUP,
1245                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1246                                           "IPv6 inside a GRE tunnel is"
1247                                           " not recognised.");
1248         if (!mask)
1249                 mask = &rte_flow_item_ipv6_mask;
1250         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1251                                         (const uint8_t *)&nic_mask,
1252                                         sizeof(struct rte_flow_item_ipv6),
1253                                         error);
1254         if (ret < 0)
1255                 return ret;
1256         return 0;
1257 }
1258
1259 /**
1260  * Validate UDP item.
1261  *
1262  * @param[in] item
1263  *   Item specification.
1264  * @param[in] item_flags
1265  *   Bit-fields that holds the items detected until now.
1266  * @param[in] target_protocol
1267  *   The next protocol in the previous item.
1268  * @param[in] flow_mask
1269  *   mlx5 flow-specific (TCF, DV, verbs, etc.) supported header fields mask.
1270  * @param[out] error
1271  *   Pointer to error structure.
1272  *
1273  * @return
1274  *   0 on success, a negative errno value otherwise and rte_errno is set.
1275  */
1276 int
1277 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1278                             uint64_t item_flags,
1279                             uint8_t target_protocol,
1280                             struct rte_flow_error *error)
1281 {
1282         const struct rte_flow_item_udp *mask = item->mask;
1283         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1284         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1285                                       MLX5_FLOW_LAYER_OUTER_L3;
1286         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1287                                       MLX5_FLOW_LAYER_OUTER_L4;
1288         int ret;
1289
1290         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1291                 return rte_flow_error_set(error, EINVAL,
1292                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1293                                           "protocol filtering not compatible"
1294                                           " with UDP layer");
1295         if (!(item_flags & l3m))
1296                 return rte_flow_error_set(error, EINVAL,
1297                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1298                                           "L3 is mandatory to filter on L4");
1299         if (item_flags & l4m)
1300                 return rte_flow_error_set(error, EINVAL,
1301                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1302                                           "multiple L4 layers not supported");
1303         if (!mask)
1304                 mask = &rte_flow_item_udp_mask;
1305         ret = mlx5_flow_item_acceptable
1306                 (item, (const uint8_t *)mask,
1307                  (const uint8_t *)&rte_flow_item_udp_mask,
1308                  sizeof(struct rte_flow_item_udp), error);
1309         if (ret < 0)
1310                 return ret;
1311         return 0;
1312 }
1313
1314 /**
1315  * Validate TCP item.
1316  *
1317  * @param[in] item
1318  *   Item specification.
1319  * @param[in] item_flags
1320  *   Bit-fields that holds the items detected until now.
1321  * @param[in] target_protocol
1322  *   The next protocol in the previous item.
1323  * @param[out] error
1324  *   Pointer to error structure.
1325  *
1326  * @return
1327  *   0 on success, a negative errno value otherwise and rte_errno is set.
1328  */
1329 int
1330 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1331                             uint64_t item_flags,
1332                             uint8_t target_protocol,
1333                             const struct rte_flow_item_tcp *flow_mask,
1334                             struct rte_flow_error *error)
1335 {
1336         const struct rte_flow_item_tcp *mask = item->mask;
1337         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1338         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1339                                       MLX5_FLOW_LAYER_OUTER_L3;
1340         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1341                                       MLX5_FLOW_LAYER_OUTER_L4;
1342         int ret;
1343
1344         assert(flow_mask);
1345         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1346                 return rte_flow_error_set(error, EINVAL,
1347                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1348                                           "protocol filtering not compatible"
1349                                           " with TCP layer");
1350         if (!(item_flags & l3m))
1351                 return rte_flow_error_set(error, EINVAL,
1352                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1353                                           "L3 is mandatory to filter on L4");
1354         if (item_flags & l4m)
1355                 return rte_flow_error_set(error, EINVAL,
1356                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1357                                           "multiple L4 layers not supported");
1358         if (!mask)
1359                 mask = &rte_flow_item_tcp_mask;
1360         ret = mlx5_flow_item_acceptable
1361                 (item, (const uint8_t *)mask,
1362                  (const uint8_t *)flow_mask,
1363                  sizeof(struct rte_flow_item_tcp), error);
1364         if (ret < 0)
1365                 return ret;
1366         return 0;
1367 }
1368
1369 /**
1370  * Validate VXLAN item.
1371  *
1372  * @param[in] item
1373  *   Item specification.
1374  * @param[in] item_flags
1375  *   Bit-fields that holds the items detected until now.
1376  * @param[in] target_protocol
1377  *   The next protocol in the previous item.
1378  * @param[out] error
1379  *   Pointer to error structure.
1380  *
1381  * @return
1382  *   0 on success, a negative errno value otherwise and rte_errno is set.
1383  */
1384 int
1385 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1386                               uint64_t item_flags,
1387                               struct rte_flow_error *error)
1388 {
1389         const struct rte_flow_item_vxlan *spec = item->spec;
1390         const struct rte_flow_item_vxlan *mask = item->mask;
1391         int ret;
1392         union vni {
1393                 uint32_t vlan_id;
1394                 uint8_t vni[4];
1395         } id = { .vlan_id = 0, };
1396         uint32_t vlan_id = 0;
1397
1398
1399         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1400                 return rte_flow_error_set(error, ENOTSUP,
1401                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1402                                           "multiple tunnel layers not"
1403                                           " supported");
1404         /*
1405          * Verify only UDPv4 is present as defined in
1406          * https://tools.ietf.org/html/rfc7348
1407          */
1408         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1409                 return rte_flow_error_set(error, EINVAL,
1410                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1411                                           "no outer UDP layer found");
1412         if (!mask)
1413                 mask = &rte_flow_item_vxlan_mask;
1414         ret = mlx5_flow_item_acceptable
1415                 (item, (const uint8_t *)mask,
1416                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1417                  sizeof(struct rte_flow_item_vxlan),
1418                  error);
1419         if (ret < 0)
1420                 return ret;
1421         if (spec) {
1422                 memcpy(&id.vni[1], spec->vni, 3);
1423                 vlan_id = id.vlan_id;
1424                 memcpy(&id.vni[1], mask->vni, 3);
1425                 vlan_id &= id.vlan_id;
1426         }
1427         /*
1428          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1429          * only this layer is defined in the Verbs specification it is
1430          * interpreted as wildcard and all packets will match this
1431          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1432          * udp), all packets matching the layers before will also
1433          * match this rule.  To avoid such situation, VNI 0 is
1434          * currently refused.
1435          */
1436         if (!vlan_id)
1437                 return rte_flow_error_set(error, ENOTSUP,
1438                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1439                                           "VXLAN vni cannot be 0");
1440         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1441                 return rte_flow_error_set(error, ENOTSUP,
1442                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1443                                           "VXLAN tunnel must be fully defined");
1444         return 0;
1445 }
1446
1447 /**
1448  * Validate VXLAN_GPE item.
1449  *
1450  * @param[in] item
1451  *   Item specification.
1452  * @param[in] item_flags
1453  *   Bit-fields that holds the items detected until now.
1454  * @param[in] priv
1455  *   Pointer to the private data structure.
1456  * @param[in] target_protocol
1457  *   The next protocol in the previous item.
1458  * @param[out] error
1459  *   Pointer to error structure.
1460  *
1461  * @return
1462  *   0 on success, a negative errno value otherwise and rte_errno is set.
1463  */
1464 int
1465 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1466                                   uint64_t item_flags,
1467                                   struct rte_eth_dev *dev,
1468                                   struct rte_flow_error *error)
1469 {
1470         struct priv *priv = dev->data->dev_private;
1471         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1472         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1473         int ret;
1474         union vni {
1475                 uint32_t vlan_id;
1476                 uint8_t vni[4];
1477         } id = { .vlan_id = 0, };
1478         uint32_t vlan_id = 0;
1479
1480         if (!priv->config.l3_vxlan_en)
1481                 return rte_flow_error_set(error, ENOTSUP,
1482                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1483                                           "L3 VXLAN is not enabled by device"
1484                                           " parameter and/or not configured in"
1485                                           " firmware");
1486         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1487                 return rte_flow_error_set(error, ENOTSUP,
1488                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1489                                           "multiple tunnel layers not"
1490                                           " supported");
1491         /*
1492          * Verify only UDPv4 is present as defined in
1493          * https://tools.ietf.org/html/rfc7348
1494          */
1495         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1496                 return rte_flow_error_set(error, EINVAL,
1497                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1498                                           "no outer UDP layer found");
1499         if (!mask)
1500                 mask = &rte_flow_item_vxlan_gpe_mask;
1501         ret = mlx5_flow_item_acceptable
1502                 (item, (const uint8_t *)mask,
1503                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1504                  sizeof(struct rte_flow_item_vxlan_gpe),
1505                  error);
1506         if (ret < 0)
1507                 return ret;
1508         if (spec) {
1509                 if (spec->protocol)
1510                         return rte_flow_error_set(error, ENOTSUP,
1511                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1512                                                   item,
1513                                                   "VxLAN-GPE protocol"
1514                                                   " not supported");
1515                 memcpy(&id.vni[1], spec->vni, 3);
1516                 vlan_id = id.vlan_id;
1517                 memcpy(&id.vni[1], mask->vni, 3);
1518                 vlan_id &= id.vlan_id;
1519         }
1520         /*
1521          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1522          * layer is defined in the Verbs specification it is interpreted as
1523          * wildcard and all packets will match this rule, if it follows a full
1524          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1525          * before will also match this rule.  To avoid such situation, VNI 0
1526          * is currently refused.
1527          */
1528         if (!vlan_id)
1529                 return rte_flow_error_set(error, ENOTSUP,
1530                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1531                                           "VXLAN-GPE vni cannot be 0");
1532         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1533                 return rte_flow_error_set(error, ENOTSUP,
1534                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1535                                           "VXLAN-GPE tunnel must be fully"
1536                                           " defined");
1537         return 0;
1538 }
1539
1540 /**
1541  * Validate GRE item.
1542  *
1543  * @param[in] item
1544  *   Item specification.
1545  * @param[in] item_flags
1546  *   Bit flags to mark detected items.
1547  * @param[in] target_protocol
1548  *   The next protocol in the previous item.
1549  * @param[out] error
1550  *   Pointer to error structure.
1551  *
1552  * @return
1553  *   0 on success, a negative errno value otherwise and rte_errno is set.
1554  */
1555 int
1556 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
1557                             uint64_t item_flags,
1558                             uint8_t target_protocol,
1559                             struct rte_flow_error *error)
1560 {
1561         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
1562         const struct rte_flow_item_gre *mask = item->mask;
1563         int ret;
1564
1565         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
1566                 return rte_flow_error_set(error, EINVAL,
1567                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1568                                           "protocol filtering not compatible"
1569                                           " with this GRE layer");
1570         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1571                 return rte_flow_error_set(error, ENOTSUP,
1572                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1573                                           "multiple tunnel layers not"
1574                                           " supported");
1575         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
1576                 return rte_flow_error_set(error, ENOTSUP,
1577                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1578                                           "L3 Layer is missing");
1579         if (!mask)
1580                 mask = &rte_flow_item_gre_mask;
1581         ret = mlx5_flow_item_acceptable
1582                 (item, (const uint8_t *)mask,
1583                  (const uint8_t *)&rte_flow_item_gre_mask,
1584                  sizeof(struct rte_flow_item_gre), error);
1585         if (ret < 0)
1586                 return ret;
1587 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1588         if (spec && (spec->protocol & mask->protocol))
1589                 return rte_flow_error_set(error, ENOTSUP,
1590                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1591                                           "without MPLS support the"
1592                                           " specification cannot be used for"
1593                                           " filtering");
1594 #endif
1595         return 0;
1596 }
1597
1598 /**
1599  * Validate MPLS item.
1600  *
1601  * @param[in] item
1602  *   Item specification.
1603  * @param[in] item_flags
1604  *   Bit-fields that holds the items detected until now.
1605  * @param[in] target_protocol
1606  *   The next protocol in the previous item.
1607  * @param[out] error
1608  *   Pointer to error structure.
1609  *
1610  * @return
1611  *   0 on success, a negative errno value otherwise and rte_errno is set.
1612  */
1613 int
1614 mlx5_flow_validate_item_mpls(const struct rte_flow_item *item __rte_unused,
1615                              uint64_t item_flags __rte_unused,
1616                              uint8_t target_protocol __rte_unused,
1617                              struct rte_flow_error *error)
1618 {
1619 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1620         const struct rte_flow_item_mpls *mask = item->mask;
1621         int ret;
1622
1623         if (target_protocol != 0xff && target_protocol != IPPROTO_MPLS)
1624                 return rte_flow_error_set(error, EINVAL,
1625                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1626                                           "protocol filtering not compatible"
1627                                           " with MPLS layer");
1628         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
1629         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
1630             !(item_flags & MLX5_FLOW_LAYER_GRE))
1631                 return rte_flow_error_set(error, ENOTSUP,
1632                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1633                                           "multiple tunnel layers not"
1634                                           " supported");
1635         if (!mask)
1636                 mask = &rte_flow_item_mpls_mask;
1637         ret = mlx5_flow_item_acceptable
1638                 (item, (const uint8_t *)mask,
1639                  (const uint8_t *)&rte_flow_item_mpls_mask,
1640                  sizeof(struct rte_flow_item_mpls), error);
1641         if (ret < 0)
1642                 return ret;
1643         return 0;
1644 #endif
1645         return rte_flow_error_set(error, ENOTSUP,
1646                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
1647                                   "MPLS is not supported by Verbs, please"
1648                                   " update.");
1649 }
1650
1651 static int
1652 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
1653                    const struct rte_flow_attr *attr __rte_unused,
1654                    const struct rte_flow_item items[] __rte_unused,
1655                    const struct rte_flow_action actions[] __rte_unused,
1656                    struct rte_flow_error *error __rte_unused)
1657 {
1658         rte_errno = ENOTSUP;
1659         return -rte_errno;
1660 }
1661
1662 static struct mlx5_flow *
1663 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
1664                   const struct rte_flow_item items[] __rte_unused,
1665                   const struct rte_flow_action actions[] __rte_unused,
1666                   struct rte_flow_error *error __rte_unused)
1667 {
1668         rte_errno = ENOTSUP;
1669         return NULL;
1670 }
1671
1672 static int
1673 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
1674                     struct mlx5_flow *dev_flow __rte_unused,
1675                     const struct rte_flow_attr *attr __rte_unused,
1676                     const struct rte_flow_item items[] __rte_unused,
1677                     const struct rte_flow_action actions[] __rte_unused,
1678                     struct rte_flow_error *error __rte_unused)
1679 {
1680         rte_errno = ENOTSUP;
1681         return -rte_errno;
1682 }
1683
1684 static int
1685 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
1686                 struct rte_flow *flow __rte_unused,
1687                 struct rte_flow_error *error __rte_unused)
1688 {
1689         rte_errno = ENOTSUP;
1690         return -rte_errno;
1691 }
1692
1693 static void
1694 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
1695                  struct rte_flow *flow __rte_unused)
1696 {
1697 }
1698
1699 static void
1700 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
1701                   struct rte_flow *flow __rte_unused)
1702 {
1703 }
1704
1705 static int
1706 flow_null_query(struct rte_eth_dev *dev __rte_unused,
1707                 struct rte_flow *flow __rte_unused,
1708                 const struct rte_flow_action *actions __rte_unused,
1709                 void *data __rte_unused,
1710                 struct rte_flow_error *error __rte_unused)
1711 {
1712         rte_errno = ENOTSUP;
1713         return -rte_errno;
1714 }
1715
1716 /* Void driver to protect from null pointer reference. */
1717 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
1718         .validate = flow_null_validate,
1719         .prepare = flow_null_prepare,
1720         .translate = flow_null_translate,
1721         .apply = flow_null_apply,
1722         .remove = flow_null_remove,
1723         .destroy = flow_null_destroy,
1724         .query = flow_null_query,
1725 };
1726
1727 /**
1728  * Select flow driver type according to flow attributes and device
1729  * configuration.
1730  *
1731  * @param[in] dev
1732  *   Pointer to the dev structure.
1733  * @param[in] attr
1734  *   Pointer to the flow attributes.
1735  *
1736  * @return
1737  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
1738  */
1739 static enum mlx5_flow_drv_type
1740 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
1741 {
1742         struct priv *priv = dev->data->dev_private;
1743         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
1744
1745         if (attr->transfer)
1746                 type = MLX5_FLOW_TYPE_TCF;
1747         else
1748                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
1749                                                  MLX5_FLOW_TYPE_VERBS;
1750         return type;
1751 }
1752
1753 #define flow_get_drv_ops(type) flow_drv_ops[type]
1754
1755 /**
1756  * Flow driver validation API. This abstracts calling driver specific functions.
1757  * The type of flow driver is determined according to flow attributes.
1758  *
1759  * @param[in] dev
1760  *   Pointer to the dev structure.
1761  * @param[in] attr
1762  *   Pointer to the flow attributes.
1763  * @param[in] items
1764  *   Pointer to the list of items.
1765  * @param[in] actions
1766  *   Pointer to the list of actions.
1767  * @param[out] error
1768  *   Pointer to the error structure.
1769  *
1770  * @return
1771  *   0 on success, a negative errno value otherwise and rte_ernno is set.
1772  */
1773 static inline int
1774 flow_drv_validate(struct rte_eth_dev *dev,
1775                   const struct rte_flow_attr *attr,
1776                   const struct rte_flow_item items[],
1777                   const struct rte_flow_action actions[],
1778                   struct rte_flow_error *error)
1779 {
1780         const struct mlx5_flow_driver_ops *fops;
1781         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
1782
1783         fops = flow_get_drv_ops(type);
1784         return fops->validate(dev, attr, items, actions, error);
1785 }
1786
1787 /**
1788  * Flow driver preparation API. This abstracts calling driver specific
1789  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1790  * calculates the size of memory required for device flow, allocates the memory,
1791  * initializes the device flow and returns the pointer.
1792  *
1793  * @note
1794  *   This function initializes device flow structure such as dv, tcf or verbs in
1795  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
1796  *   rest. For example, adding returning device flow to flow->dev_flow list and
1797  *   setting backward reference to the flow should be done out of this function.
1798  *   layers field is not filled either.
1799  *
1800  * @param[in] attr
1801  *   Pointer to the flow attributes.
1802  * @param[in] items
1803  *   Pointer to the list of items.
1804  * @param[in] actions
1805  *   Pointer to the list of actions.
1806  * @param[out] error
1807  *   Pointer to the error structure.
1808  *
1809  * @return
1810  *   Pointer to device flow on success, otherwise NULL and rte_ernno is set.
1811  */
1812 static inline struct mlx5_flow *
1813 flow_drv_prepare(const struct rte_flow *flow,
1814                  const struct rte_flow_attr *attr,
1815                  const struct rte_flow_item items[],
1816                  const struct rte_flow_action actions[],
1817                  struct rte_flow_error *error)
1818 {
1819         const struct mlx5_flow_driver_ops *fops;
1820         enum mlx5_flow_drv_type type = flow->drv_type;
1821
1822         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1823         fops = flow_get_drv_ops(type);
1824         return fops->prepare(attr, items, actions, error);
1825 }
1826
1827 /**
1828  * Flow driver translation API. This abstracts calling driver specific
1829  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1830  * translates a generic flow into a driver flow. flow_drv_prepare() must
1831  * precede.
1832  *
1833  * @note
1834  *   dev_flow->layers could be filled as a result of parsing during translation
1835  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
1836  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
1837  *   flow->actions could be overwritten even though all the expanded dev_flows
1838  *   have the same actions.
1839  *
1840  * @param[in] dev
1841  *   Pointer to the rte dev structure.
1842  * @param[in, out] dev_flow
1843  *   Pointer to the mlx5 flow.
1844  * @param[in] attr
1845  *   Pointer to the flow attributes.
1846  * @param[in] items
1847  *   Pointer to the list of items.
1848  * @param[in] actions
1849  *   Pointer to the list of actions.
1850  * @param[out] error
1851  *   Pointer to the error structure.
1852  *
1853  * @return
1854  *   0 on success, a negative errno value otherwise and rte_ernno is set.
1855  */
1856 static inline int
1857 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
1858                    const struct rte_flow_attr *attr,
1859                    const struct rte_flow_item items[],
1860                    const struct rte_flow_action actions[],
1861                    struct rte_flow_error *error)
1862 {
1863         const struct mlx5_flow_driver_ops *fops;
1864         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
1865
1866         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1867         fops = flow_get_drv_ops(type);
1868         return fops->translate(dev, dev_flow, attr, items, actions, error);
1869 }
1870
1871 /**
1872  * Flow driver apply API. This abstracts calling driver specific functions.
1873  * Parent flow (rte_flow) should have driver type (drv_type). It applies
1874  * translated driver flows on to device. flow_drv_translate() must precede.
1875  *
1876  * @param[in] dev
1877  *   Pointer to Ethernet device structure.
1878  * @param[in, out] flow
1879  *   Pointer to flow structure.
1880  * @param[out] error
1881  *   Pointer to error structure.
1882  *
1883  * @return
1884  *   0 on success, a negative errno value otherwise and rte_errno is set.
1885  */
1886 static inline int
1887 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
1888                struct rte_flow_error *error)
1889 {
1890         const struct mlx5_flow_driver_ops *fops;
1891         enum mlx5_flow_drv_type type = flow->drv_type;
1892
1893         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1894         fops = flow_get_drv_ops(type);
1895         return fops->apply(dev, flow, error);
1896 }
1897
1898 /**
1899  * Flow driver remove API. This abstracts calling driver specific functions.
1900  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1901  * on device. All the resources of the flow should be freed by calling
1902  * flow_drv_destroy().
1903  *
1904  * @param[in] dev
1905  *   Pointer to Ethernet device.
1906  * @param[in, out] flow
1907  *   Pointer to flow structure.
1908  */
1909 static inline void
1910 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
1911 {
1912         const struct mlx5_flow_driver_ops *fops;
1913         enum mlx5_flow_drv_type type = flow->drv_type;
1914
1915         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1916         fops = flow_get_drv_ops(type);
1917         fops->remove(dev, flow);
1918 }
1919
1920 /**
1921  * Flow driver destroy API. This abstracts calling driver specific functions.
1922  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1923  * on device and releases resources of the flow.
1924  *
1925  * @param[in] dev
1926  *   Pointer to Ethernet device.
1927  * @param[in, out] flow
1928  *   Pointer to flow structure.
1929  */
1930 static inline void
1931 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
1932 {
1933         const struct mlx5_flow_driver_ops *fops;
1934         enum mlx5_flow_drv_type type = flow->drv_type;
1935
1936         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1937         fops = flow_get_drv_ops(type);
1938         fops->destroy(dev, flow);
1939 }
1940
1941 /**
1942  * Validate a flow supported by the NIC.
1943  *
1944  * @see rte_flow_validate()
1945  * @see rte_flow_ops
1946  */
1947 int
1948 mlx5_flow_validate(struct rte_eth_dev *dev,
1949                    const struct rte_flow_attr *attr,
1950                    const struct rte_flow_item items[],
1951                    const struct rte_flow_action actions[],
1952                    struct rte_flow_error *error)
1953 {
1954         int ret;
1955
1956         ret = flow_drv_validate(dev, attr, items, actions, error);
1957         if (ret < 0)
1958                 return ret;
1959         return 0;
1960 }
1961
1962 /**
1963  * Get RSS action from the action list.
1964  *
1965  * @param[in] actions
1966  *   Pointer to the list of actions.
1967  *
1968  * @return
1969  *   Pointer to the RSS action if exist, else return NULL.
1970  */
1971 static const struct rte_flow_action_rss*
1972 flow_get_rss_action(const struct rte_flow_action actions[])
1973 {
1974         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1975                 switch (actions->type) {
1976                 case RTE_FLOW_ACTION_TYPE_RSS:
1977                         return (const struct rte_flow_action_rss *)
1978                                actions->conf;
1979                 default:
1980                         break;
1981                 }
1982         }
1983         return NULL;
1984 }
1985
1986 static unsigned int
1987 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
1988 {
1989         const struct rte_flow_item *item;
1990         unsigned int has_vlan = 0;
1991
1992         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
1993                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
1994                         has_vlan = 1;
1995                         break;
1996                 }
1997         }
1998         if (has_vlan)
1999                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2000                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2001         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2002                                MLX5_EXPANSION_ROOT_OUTER;
2003 }
2004
2005 /**
2006  * Create a flow and add it to @p list.
2007  *
2008  * @param dev
2009  *   Pointer to Ethernet device.
2010  * @param list
2011  *   Pointer to a TAILQ flow list.
2012  * @param[in] attr
2013  *   Flow rule attributes.
2014  * @param[in] items
2015  *   Pattern specification (list terminated by the END pattern item).
2016  * @param[in] actions
2017  *   Associated actions (list terminated by the END action).
2018  * @param[out] error
2019  *   Perform verbose error reporting if not NULL.
2020  *
2021  * @return
2022  *   A flow on success, NULL otherwise and rte_errno is set.
2023  */
2024 static struct rte_flow *
2025 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2026                  const struct rte_flow_attr *attr,
2027                  const struct rte_flow_item items[],
2028                  const struct rte_flow_action actions[],
2029                  struct rte_flow_error *error)
2030 {
2031         struct rte_flow *flow = NULL;
2032         struct mlx5_flow *dev_flow;
2033         const struct rte_flow_action_rss *rss;
2034         union {
2035                 struct rte_flow_expand_rss buf;
2036                 uint8_t buffer[2048];
2037         } expand_buffer;
2038         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
2039         int ret;
2040         uint32_t i;
2041         uint32_t flow_size;
2042
2043         ret = flow_drv_validate(dev, attr, items, actions, error);
2044         if (ret < 0)
2045                 return NULL;
2046         flow_size = sizeof(struct rte_flow);
2047         rss = flow_get_rss_action(actions);
2048         if (rss)
2049                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
2050                                             sizeof(void *));
2051         else
2052                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
2053         flow = rte_calloc(__func__, 1, flow_size, 0);
2054         flow->drv_type = flow_get_drv_type(dev, attr);
2055         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
2056                flow->drv_type < MLX5_FLOW_TYPE_MAX);
2057         flow->queue = (void *)(flow + 1);
2058         LIST_INIT(&flow->dev_flows);
2059         if (rss && rss->types) {
2060                 unsigned int graph_root;
2061
2062                 graph_root = find_graph_root(items, rss->level);
2063                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
2064                                           items, rss->types,
2065                                           mlx5_support_expansion,
2066                                           graph_root);
2067                 assert(ret > 0 &&
2068                        (unsigned int)ret < sizeof(expand_buffer.buffer));
2069         } else {
2070                 buf->entries = 1;
2071                 buf->entry[0].pattern = (void *)(uintptr_t)items;
2072         }
2073         for (i = 0; i < buf->entries; ++i) {
2074                 dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern,
2075                                             actions, error);
2076                 if (!dev_flow)
2077                         goto error;
2078                 dev_flow->flow = flow;
2079                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
2080                 ret = flow_drv_translate(dev, dev_flow, attr,
2081                                          buf->entry[i].pattern,
2082                                          actions, error);
2083                 if (ret < 0)
2084                         goto error;
2085         }
2086         if (dev->data->dev_started) {
2087                 ret = flow_drv_apply(dev, flow, error);
2088                 if (ret < 0)
2089                         goto error;
2090         }
2091         TAILQ_INSERT_TAIL(list, flow, next);
2092         flow_rxq_flags_set(dev, flow);
2093         return flow;
2094 error:
2095         ret = rte_errno; /* Save rte_errno before cleanup. */
2096         assert(flow);
2097         flow_drv_destroy(dev, flow);
2098         rte_free(flow);
2099         rte_errno = ret; /* Restore rte_errno. */
2100         return NULL;
2101 }
2102
2103 /**
2104  * Create a flow.
2105  *
2106  * @see rte_flow_create()
2107  * @see rte_flow_ops
2108  */
2109 struct rte_flow *
2110 mlx5_flow_create(struct rte_eth_dev *dev,
2111                  const struct rte_flow_attr *attr,
2112                  const struct rte_flow_item items[],
2113                  const struct rte_flow_action actions[],
2114                  struct rte_flow_error *error)
2115 {
2116         return flow_list_create(dev,
2117                                 &((struct priv *)dev->data->dev_private)->flows,
2118                                 attr, items, actions, error);
2119 }
2120
2121 /**
2122  * Destroy a flow in a list.
2123  *
2124  * @param dev
2125  *   Pointer to Ethernet device.
2126  * @param list
2127  *   Pointer to a TAILQ flow list.
2128  * @param[in] flow
2129  *   Flow to destroy.
2130  */
2131 static void
2132 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2133                   struct rte_flow *flow)
2134 {
2135         flow_drv_destroy(dev, flow);
2136         TAILQ_REMOVE(list, flow, next);
2137         /*
2138          * Update RX queue flags only if port is started, otherwise it is
2139          * already clean.
2140          */
2141         if (dev->data->dev_started)
2142                 flow_rxq_flags_trim(dev, flow);
2143         rte_free(flow->fdir);
2144         rte_free(flow);
2145 }
2146
2147 /**
2148  * Destroy all flows.
2149  *
2150  * @param dev
2151  *   Pointer to Ethernet device.
2152  * @param list
2153  *   Pointer to a TAILQ flow list.
2154  */
2155 void
2156 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2157 {
2158         while (!TAILQ_EMPTY(list)) {
2159                 struct rte_flow *flow;
2160
2161                 flow = TAILQ_FIRST(list);
2162                 flow_list_destroy(dev, list, flow);
2163         }
2164 }
2165
2166 /**
2167  * Remove all flows.
2168  *
2169  * @param dev
2170  *   Pointer to Ethernet device.
2171  * @param list
2172  *   Pointer to a TAILQ flow list.
2173  */
2174 void
2175 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2176 {
2177         struct rte_flow *flow;
2178
2179         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
2180                 flow_drv_remove(dev, flow);
2181         flow_rxq_flags_clear(dev);
2182 }
2183
2184 /**
2185  * Add all flows.
2186  *
2187  * @param dev
2188  *   Pointer to Ethernet device.
2189  * @param list
2190  *   Pointer to a TAILQ flow list.
2191  *
2192  * @return
2193  *   0 on success, a negative errno value otherwise and rte_errno is set.
2194  */
2195 int
2196 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2197 {
2198         struct rte_flow *flow;
2199         struct rte_flow_error error;
2200         int ret = 0;
2201
2202         TAILQ_FOREACH(flow, list, next) {
2203                 ret = flow_drv_apply(dev, flow, &error);
2204                 if (ret < 0)
2205                         goto error;
2206                 flow_rxq_flags_set(dev, flow);
2207         }
2208         return 0;
2209 error:
2210         ret = rte_errno; /* Save rte_errno before cleanup. */
2211         mlx5_flow_stop(dev, list);
2212         rte_errno = ret; /* Restore rte_errno. */
2213         return -rte_errno;
2214 }
2215
2216 /**
2217  * Verify the flow list is empty
2218  *
2219  * @param dev
2220  *  Pointer to Ethernet device.
2221  *
2222  * @return the number of flows not released.
2223  */
2224 int
2225 mlx5_flow_verify(struct rte_eth_dev *dev)
2226 {
2227         struct priv *priv = dev->data->dev_private;
2228         struct rte_flow *flow;
2229         int ret = 0;
2230
2231         TAILQ_FOREACH(flow, &priv->flows, next) {
2232                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2233                         dev->data->port_id, (void *)flow);
2234                 ++ret;
2235         }
2236         return ret;
2237 }
2238
2239 /**
2240  * Enable a control flow configured from the control plane.
2241  *
2242  * @param dev
2243  *   Pointer to Ethernet device.
2244  * @param eth_spec
2245  *   An Ethernet flow spec to apply.
2246  * @param eth_mask
2247  *   An Ethernet flow mask to apply.
2248  * @param vlan_spec
2249  *   A VLAN flow spec to apply.
2250  * @param vlan_mask
2251  *   A VLAN flow mask to apply.
2252  *
2253  * @return
2254  *   0 on success, a negative errno value otherwise and rte_errno is set.
2255  */
2256 int
2257 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2258                     struct rte_flow_item_eth *eth_spec,
2259                     struct rte_flow_item_eth *eth_mask,
2260                     struct rte_flow_item_vlan *vlan_spec,
2261                     struct rte_flow_item_vlan *vlan_mask)
2262 {
2263         struct priv *priv = dev->data->dev_private;
2264         const struct rte_flow_attr attr = {
2265                 .ingress = 1,
2266                 .priority = MLX5_FLOW_PRIO_RSVD,
2267         };
2268         struct rte_flow_item items[] = {
2269                 {
2270                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2271                         .spec = eth_spec,
2272                         .last = NULL,
2273                         .mask = eth_mask,
2274                 },
2275                 {
2276                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2277                                               RTE_FLOW_ITEM_TYPE_END,
2278                         .spec = vlan_spec,
2279                         .last = NULL,
2280                         .mask = vlan_mask,
2281                 },
2282                 {
2283                         .type = RTE_FLOW_ITEM_TYPE_END,
2284                 },
2285         };
2286         uint16_t queue[priv->reta_idx_n];
2287         struct rte_flow_action_rss action_rss = {
2288                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2289                 .level = 0,
2290                 .types = priv->rss_conf.rss_hf,
2291                 .key_len = priv->rss_conf.rss_key_len,
2292                 .queue_num = priv->reta_idx_n,
2293                 .key = priv->rss_conf.rss_key,
2294                 .queue = queue,
2295         };
2296         struct rte_flow_action actions[] = {
2297                 {
2298                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2299                         .conf = &action_rss,
2300                 },
2301                 {
2302                         .type = RTE_FLOW_ACTION_TYPE_END,
2303                 },
2304         };
2305         struct rte_flow *flow;
2306         struct rte_flow_error error;
2307         unsigned int i;
2308
2309         if (!priv->reta_idx_n) {
2310                 rte_errno = EINVAL;
2311                 return -rte_errno;
2312         }
2313         for (i = 0; i != priv->reta_idx_n; ++i)
2314                 queue[i] = (*priv->reta_idx)[i];
2315         flow = flow_list_create(dev, &priv->ctrl_flows,
2316                                 &attr, items, actions, &error);
2317         if (!flow)
2318                 return -rte_errno;
2319         return 0;
2320 }
2321
2322 /**
2323  * Enable a flow control configured from the control plane.
2324  *
2325  * @param dev
2326  *   Pointer to Ethernet device.
2327  * @param eth_spec
2328  *   An Ethernet flow spec to apply.
2329  * @param eth_mask
2330  *   An Ethernet flow mask to apply.
2331  *
2332  * @return
2333  *   0 on success, a negative errno value otherwise and rte_errno is set.
2334  */
2335 int
2336 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2337                struct rte_flow_item_eth *eth_spec,
2338                struct rte_flow_item_eth *eth_mask)
2339 {
2340         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2341 }
2342
2343 /**
2344  * Destroy a flow.
2345  *
2346  * @see rte_flow_destroy()
2347  * @see rte_flow_ops
2348  */
2349 int
2350 mlx5_flow_destroy(struct rte_eth_dev *dev,
2351                   struct rte_flow *flow,
2352                   struct rte_flow_error *error __rte_unused)
2353 {
2354         struct priv *priv = dev->data->dev_private;
2355
2356         flow_list_destroy(dev, &priv->flows, flow);
2357         return 0;
2358 }
2359
2360 /**
2361  * Destroy all flows.
2362  *
2363  * @see rte_flow_flush()
2364  * @see rte_flow_ops
2365  */
2366 int
2367 mlx5_flow_flush(struct rte_eth_dev *dev,
2368                 struct rte_flow_error *error __rte_unused)
2369 {
2370         struct priv *priv = dev->data->dev_private;
2371
2372         mlx5_flow_list_flush(dev, &priv->flows);
2373         return 0;
2374 }
2375
2376 /**
2377  * Isolated mode.
2378  *
2379  * @see rte_flow_isolate()
2380  * @see rte_flow_ops
2381  */
2382 int
2383 mlx5_flow_isolate(struct rte_eth_dev *dev,
2384                   int enable,
2385                   struct rte_flow_error *error)
2386 {
2387         struct priv *priv = dev->data->dev_private;
2388
2389         if (dev->data->dev_started) {
2390                 rte_flow_error_set(error, EBUSY,
2391                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2392                                    NULL,
2393                                    "port must be stopped first");
2394                 return -rte_errno;
2395         }
2396         priv->isolated = !!enable;
2397         if (enable)
2398                 dev->dev_ops = &mlx5_dev_ops_isolate;
2399         else
2400                 dev->dev_ops = &mlx5_dev_ops;
2401         return 0;
2402 }
2403
2404 /**
2405  * Query a flow.
2406  *
2407  * @see rte_flow_query()
2408  * @see rte_flow_ops
2409  */
2410 static int
2411 flow_drv_query(struct rte_eth_dev *dev,
2412                struct rte_flow *flow,
2413                const struct rte_flow_action *actions,
2414                void *data,
2415                struct rte_flow_error *error)
2416 {
2417         const struct mlx5_flow_driver_ops *fops;
2418         enum mlx5_flow_drv_type ftype = flow->drv_type;
2419
2420         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
2421         fops = flow_get_drv_ops(ftype);
2422
2423         return fops->query(dev, flow, actions, data, error);
2424 }
2425
2426 /**
2427  * Query a flow.
2428  *
2429  * @see rte_flow_query()
2430  * @see rte_flow_ops
2431  */
2432 int
2433 mlx5_flow_query(struct rte_eth_dev *dev,
2434                 struct rte_flow *flow,
2435                 const struct rte_flow_action *actions,
2436                 void *data,
2437                 struct rte_flow_error *error)
2438 {
2439         int ret;
2440
2441         ret = flow_drv_query(dev, flow, actions, data, error);
2442         if (ret < 0)
2443                 return ret;
2444         return 0;
2445 }
2446
2447 /**
2448  * Convert a flow director filter to a generic flow.
2449  *
2450  * @param dev
2451  *   Pointer to Ethernet device.
2452  * @param fdir_filter
2453  *   Flow director filter to add.
2454  * @param attributes
2455  *   Generic flow parameters structure.
2456  *
2457  * @return
2458  *   0 on success, a negative errno value otherwise and rte_errno is set.
2459  */
2460 static int
2461 flow_fdir_filter_convert(struct rte_eth_dev *dev,
2462                          const struct rte_eth_fdir_filter *fdir_filter,
2463                          struct mlx5_fdir *attributes)
2464 {
2465         struct priv *priv = dev->data->dev_private;
2466         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2467         const struct rte_eth_fdir_masks *mask =
2468                 &dev->data->dev_conf.fdir_conf.mask;
2469
2470         /* Validate queue number. */
2471         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2472                 DRV_LOG(ERR, "port %u invalid queue number %d",
2473                         dev->data->port_id, fdir_filter->action.rx_queue);
2474                 rte_errno = EINVAL;
2475                 return -rte_errno;
2476         }
2477         attributes->attr.ingress = 1;
2478         attributes->items[0] = (struct rte_flow_item) {
2479                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2480                 .spec = &attributes->l2,
2481                 .mask = &attributes->l2_mask,
2482         };
2483         switch (fdir_filter->action.behavior) {
2484         case RTE_ETH_FDIR_ACCEPT:
2485                 attributes->actions[0] = (struct rte_flow_action){
2486                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2487                         .conf = &attributes->queue,
2488                 };
2489                 break;
2490         case RTE_ETH_FDIR_REJECT:
2491                 attributes->actions[0] = (struct rte_flow_action){
2492                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2493                 };
2494                 break;
2495         default:
2496                 DRV_LOG(ERR, "port %u invalid behavior %d",
2497                         dev->data->port_id,
2498                         fdir_filter->action.behavior);
2499                 rte_errno = ENOTSUP;
2500                 return -rte_errno;
2501         }
2502         attributes->queue.index = fdir_filter->action.rx_queue;
2503         /* Handle L3. */
2504         switch (fdir_filter->input.flow_type) {
2505         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2506         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2507         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2508                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2509                         .src_addr = input->flow.ip4_flow.src_ip,
2510                         .dst_addr = input->flow.ip4_flow.dst_ip,
2511                         .time_to_live = input->flow.ip4_flow.ttl,
2512                         .type_of_service = input->flow.ip4_flow.tos,
2513                 };
2514                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
2515                         .src_addr = mask->ipv4_mask.src_ip,
2516                         .dst_addr = mask->ipv4_mask.dst_ip,
2517                         .time_to_live = mask->ipv4_mask.ttl,
2518                         .type_of_service = mask->ipv4_mask.tos,
2519                         .next_proto_id = mask->ipv4_mask.proto,
2520                 };
2521                 attributes->items[1] = (struct rte_flow_item){
2522                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2523                         .spec = &attributes->l3,
2524                         .mask = &attributes->l3_mask,
2525                 };
2526                 break;
2527         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2528         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2529         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2530                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2531                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2532                         .proto = input->flow.ipv6_flow.proto,
2533                 };
2534
2535                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2536                        input->flow.ipv6_flow.src_ip,
2537                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2538                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2539                        input->flow.ipv6_flow.dst_ip,
2540                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2541                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2542                        mask->ipv6_mask.src_ip,
2543                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2544                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2545                        mask->ipv6_mask.dst_ip,
2546                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2547                 attributes->items[1] = (struct rte_flow_item){
2548                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2549                         .spec = &attributes->l3,
2550                         .mask = &attributes->l3_mask,
2551                 };
2552                 break;
2553         default:
2554                 DRV_LOG(ERR, "port %u invalid flow type%d",
2555                         dev->data->port_id, fdir_filter->input.flow_type);
2556                 rte_errno = ENOTSUP;
2557                 return -rte_errno;
2558         }
2559         /* Handle L4. */
2560         switch (fdir_filter->input.flow_type) {
2561         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2562                 attributes->l4.udp.hdr = (struct udp_hdr){
2563                         .src_port = input->flow.udp4_flow.src_port,
2564                         .dst_port = input->flow.udp4_flow.dst_port,
2565                 };
2566                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2567                         .src_port = mask->src_port_mask,
2568                         .dst_port = mask->dst_port_mask,
2569                 };
2570                 attributes->items[2] = (struct rte_flow_item){
2571                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2572                         .spec = &attributes->l4,
2573                         .mask = &attributes->l4_mask,
2574                 };
2575                 break;
2576         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2577                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2578                         .src_port = input->flow.tcp4_flow.src_port,
2579                         .dst_port = input->flow.tcp4_flow.dst_port,
2580                 };
2581                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2582                         .src_port = mask->src_port_mask,
2583                         .dst_port = mask->dst_port_mask,
2584                 };
2585                 attributes->items[2] = (struct rte_flow_item){
2586                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2587                         .spec = &attributes->l4,
2588                         .mask = &attributes->l4_mask,
2589                 };
2590                 break;
2591         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2592                 attributes->l4.udp.hdr = (struct udp_hdr){
2593                         .src_port = input->flow.udp6_flow.src_port,
2594                         .dst_port = input->flow.udp6_flow.dst_port,
2595                 };
2596                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2597                         .src_port = mask->src_port_mask,
2598                         .dst_port = mask->dst_port_mask,
2599                 };
2600                 attributes->items[2] = (struct rte_flow_item){
2601                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2602                         .spec = &attributes->l4,
2603                         .mask = &attributes->l4_mask,
2604                 };
2605                 break;
2606         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2607                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2608                         .src_port = input->flow.tcp6_flow.src_port,
2609                         .dst_port = input->flow.tcp6_flow.dst_port,
2610                 };
2611                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2612                         .src_port = mask->src_port_mask,
2613                         .dst_port = mask->dst_port_mask,
2614                 };
2615                 attributes->items[2] = (struct rte_flow_item){
2616                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2617                         .spec = &attributes->l4,
2618                         .mask = &attributes->l4_mask,
2619                 };
2620                 break;
2621         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2622         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2623                 break;
2624         default:
2625                 DRV_LOG(ERR, "port %u invalid flow type%d",
2626                         dev->data->port_id, fdir_filter->input.flow_type);
2627                 rte_errno = ENOTSUP;
2628                 return -rte_errno;
2629         }
2630         return 0;
2631 }
2632
2633 #define FLOW_FDIR_CMP(f1, f2, fld) \
2634         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
2635
2636 /**
2637  * Compare two FDIR flows. If items and actions are identical, the two flows are
2638  * regarded as same.
2639  *
2640  * @param dev
2641  *   Pointer to Ethernet device.
2642  * @param f1
2643  *   FDIR flow to compare.
2644  * @param f2
2645  *   FDIR flow to compare.
2646  *
2647  * @return
2648  *   Zero on match, 1 otherwise.
2649  */
2650 static int
2651 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
2652 {
2653         if (FLOW_FDIR_CMP(f1, f2, attr) ||
2654             FLOW_FDIR_CMP(f1, f2, l2) ||
2655             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
2656             FLOW_FDIR_CMP(f1, f2, l3) ||
2657             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
2658             FLOW_FDIR_CMP(f1, f2, l4) ||
2659             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
2660             FLOW_FDIR_CMP(f1, f2, actions[0]))
2661                 return 1;
2662         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
2663             FLOW_FDIR_CMP(f1, f2, queue))
2664                 return 1;
2665         return 0;
2666 }
2667
2668 /**
2669  * Search device flow list to find out a matched FDIR flow.
2670  *
2671  * @param dev
2672  *   Pointer to Ethernet device.
2673  * @param fdir_flow
2674  *   FDIR flow to lookup.
2675  *
2676  * @return
2677  *   Pointer of flow if found, NULL otherwise.
2678  */
2679 static struct rte_flow *
2680 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
2681 {
2682         struct priv *priv = dev->data->dev_private;
2683         struct rte_flow *flow = NULL;
2684
2685         assert(fdir_flow);
2686         TAILQ_FOREACH(flow, &priv->flows, next) {
2687                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
2688                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
2689                                 dev->data->port_id, (void *)flow);
2690                         break;
2691                 }
2692         }
2693         return flow;
2694 }
2695
2696 /**
2697  * Add new flow director filter and store it in list.
2698  *
2699  * @param dev
2700  *   Pointer to Ethernet device.
2701  * @param fdir_filter
2702  *   Flow director filter to add.
2703  *
2704  * @return
2705  *   0 on success, a negative errno value otherwise and rte_errno is set.
2706  */
2707 static int
2708 flow_fdir_filter_add(struct rte_eth_dev *dev,
2709                      const struct rte_eth_fdir_filter *fdir_filter)
2710 {
2711         struct priv *priv = dev->data->dev_private;
2712         struct mlx5_fdir *fdir_flow;
2713         struct rte_flow *flow;
2714         int ret;
2715
2716         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
2717         if (!fdir_flow) {
2718                 rte_errno = ENOMEM;
2719                 return -rte_errno;
2720         }
2721         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
2722         if (ret)
2723                 goto error;
2724         flow = flow_fdir_filter_lookup(dev, fdir_flow);
2725         if (flow) {
2726                 rte_errno = EEXIST;
2727                 goto error;
2728         }
2729         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
2730                                 fdir_flow->items, fdir_flow->actions, NULL);
2731         if (!flow)
2732                 goto error;
2733         assert(!flow->fdir);
2734         flow->fdir = fdir_flow;
2735         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
2736                 dev->data->port_id, (void *)flow);
2737         return 0;
2738 error:
2739         rte_free(fdir_flow);
2740         return -rte_errno;
2741 }
2742
2743 /**
2744  * Delete specific filter.
2745  *
2746  * @param dev
2747  *   Pointer to Ethernet device.
2748  * @param fdir_filter
2749  *   Filter to be deleted.
2750  *
2751  * @return
2752  *   0 on success, a negative errno value otherwise and rte_errno is set.
2753  */
2754 static int
2755 flow_fdir_filter_delete(struct rte_eth_dev *dev,
2756                         const struct rte_eth_fdir_filter *fdir_filter)
2757 {
2758         struct priv *priv = dev->data->dev_private;
2759         struct rte_flow *flow;
2760         struct mlx5_fdir fdir_flow = {
2761                 .attr.group = 0,
2762         };
2763         int ret;
2764
2765         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
2766         if (ret)
2767                 return -rte_errno;
2768         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
2769         if (!flow) {
2770                 rte_errno = ENOENT;
2771                 return -rte_errno;
2772         }
2773         flow_list_destroy(dev, &priv->flows, flow);
2774         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
2775                 dev->data->port_id, (void *)flow);
2776         return 0;
2777 }
2778
2779 /**
2780  * Update queue for specific filter.
2781  *
2782  * @param dev
2783  *   Pointer to Ethernet device.
2784  * @param fdir_filter
2785  *   Filter to be updated.
2786  *
2787  * @return
2788  *   0 on success, a negative errno value otherwise and rte_errno is set.
2789  */
2790 static int
2791 flow_fdir_filter_update(struct rte_eth_dev *dev,
2792                         const struct rte_eth_fdir_filter *fdir_filter)
2793 {
2794         int ret;
2795
2796         ret = flow_fdir_filter_delete(dev, fdir_filter);
2797         if (ret)
2798                 return ret;
2799         return flow_fdir_filter_add(dev, fdir_filter);
2800 }
2801
2802 /**
2803  * Flush all filters.
2804  *
2805  * @param dev
2806  *   Pointer to Ethernet device.
2807  */
2808 static void
2809 flow_fdir_filter_flush(struct rte_eth_dev *dev)
2810 {
2811         struct priv *priv = dev->data->dev_private;
2812
2813         mlx5_flow_list_flush(dev, &priv->flows);
2814 }
2815
2816 /**
2817  * Get flow director information.
2818  *
2819  * @param dev
2820  *   Pointer to Ethernet device.
2821  * @param[out] fdir_info
2822  *   Resulting flow director information.
2823  */
2824 static void
2825 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
2826 {
2827         struct rte_eth_fdir_masks *mask =
2828                 &dev->data->dev_conf.fdir_conf.mask;
2829
2830         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
2831         fdir_info->guarant_spc = 0;
2832         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
2833         fdir_info->max_flexpayload = 0;
2834         fdir_info->flow_types_mask[0] = 0;
2835         fdir_info->flex_payload_unit = 0;
2836         fdir_info->max_flex_payload_segment_num = 0;
2837         fdir_info->flex_payload_limit = 0;
2838         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
2839 }
2840
2841 /**
2842  * Deal with flow director operations.
2843  *
2844  * @param dev
2845  *   Pointer to Ethernet device.
2846  * @param filter_op
2847  *   Operation to perform.
2848  * @param arg
2849  *   Pointer to operation-specific structure.
2850  *
2851  * @return
2852  *   0 on success, a negative errno value otherwise and rte_errno is set.
2853  */
2854 static int
2855 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
2856                     void *arg)
2857 {
2858         enum rte_fdir_mode fdir_mode =
2859                 dev->data->dev_conf.fdir_conf.mode;
2860
2861         if (filter_op == RTE_ETH_FILTER_NOP)
2862                 return 0;
2863         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
2864             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
2865                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
2866                         dev->data->port_id, fdir_mode);
2867                 rte_errno = EINVAL;
2868                 return -rte_errno;
2869         }
2870         switch (filter_op) {
2871         case RTE_ETH_FILTER_ADD:
2872                 return flow_fdir_filter_add(dev, arg);
2873         case RTE_ETH_FILTER_UPDATE:
2874                 return flow_fdir_filter_update(dev, arg);
2875         case RTE_ETH_FILTER_DELETE:
2876                 return flow_fdir_filter_delete(dev, arg);
2877         case RTE_ETH_FILTER_FLUSH:
2878                 flow_fdir_filter_flush(dev);
2879                 break;
2880         case RTE_ETH_FILTER_INFO:
2881                 flow_fdir_info_get(dev, arg);
2882                 break;
2883         default:
2884                 DRV_LOG(DEBUG, "port %u unknown operation %u",
2885                         dev->data->port_id, filter_op);
2886                 rte_errno = EINVAL;
2887                 return -rte_errno;
2888         }
2889         return 0;
2890 }
2891
2892 /**
2893  * Manage filter operations.
2894  *
2895  * @param dev
2896  *   Pointer to Ethernet device structure.
2897  * @param filter_type
2898  *   Filter type.
2899  * @param filter_op
2900  *   Operation to perform.
2901  * @param arg
2902  *   Pointer to operation-specific structure.
2903  *
2904  * @return
2905  *   0 on success, a negative errno value otherwise and rte_errno is set.
2906  */
2907 int
2908 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
2909                      enum rte_filter_type filter_type,
2910                      enum rte_filter_op filter_op,
2911                      void *arg)
2912 {
2913         switch (filter_type) {
2914         case RTE_ETH_FILTER_GENERIC:
2915                 if (filter_op != RTE_ETH_FILTER_GET) {
2916                         rte_errno = EINVAL;
2917                         return -rte_errno;
2918                 }
2919                 *(const void **)arg = &mlx5_flow_ops;
2920                 return 0;
2921         case RTE_ETH_FILTER_FDIR:
2922                 return flow_fdir_ctrl_func(dev, filter_op, arg);
2923         default:
2924                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
2925                         dev->data->port_id, filter_type);
2926                 rte_errno = ENOTSUP;
2927                 return -rte_errno;
2928         }
2929         return 0;
2930 }