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_action actions[2];
 243         struct rte_flow_item items[4];
 244         struct rte_flow_item_eth l2;
 245         struct rte_flow_item_eth l2_mask;
 246         union {
 247                 struct rte_flow_item_ipv4 ipv4;
 248                 struct rte_flow_item_ipv6 ipv6;
 249         } l3;
 250         union {
 251                 struct rte_flow_item_ipv4 ipv4;
 252                 struct rte_flow_item_ipv6 ipv6;
 253         } l3_mask;
 254         union {
 255                 struct rte_flow_item_udp udp;
 256                 struct rte_flow_item_tcp tcp;
 257         } l4;
 258         union {
 259                 struct rte_flow_item_udp udp;
 260                 struct rte_flow_item_tcp tcp;
 261         } l4_mask;
 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         uint32_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 static 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, ENOTSUP,
 456                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 457                                                   item,
 458                                                   "range is not supported");
 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, uint32_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 mlx5_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 flow.
 529  *
 530  * @param[in] dev
 531  *   Pointer to the Ethernet device structure.
 532  * @param[in] flow
 533  *   Pointer to flow structure.
 534  */
 535 static void
 536 mlx5_flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 537 {
 538         struct priv *priv = dev->data->dev_private;
 539         const int mark = !!(flow->actions &
 540                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 541         const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 542         unsigned int i;
 543
 544         for (i = 0; i != flow->rss.queue_num; ++i) {
 545                 int idx = (*flow->queue)[i];
 546                 struct mlx5_rxq_ctrl *rxq_ctrl =
 547                         container_of((*priv->rxqs)[idx],
 548                                      struct mlx5_rxq_ctrl, rxq);
 549
 550                 if (mark) {
 551                         rxq_ctrl->rxq.mark = 1;
 552                         rxq_ctrl->flow_mark_n++;
 553                 }
 554                 if (tunnel) {
 555                         unsigned int j;
 556
 557                         /* Increase the counter matching the flow. */
 558                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 559                                 if ((tunnels_info[j].tunnel & flow->layers) ==
 560                                     tunnels_info[j].tunnel) {
 561                                         rxq_ctrl->flow_tunnels_n[j]++;
 562                                         break;
 563                                 }
 564                         }
 565                         mlx5_flow_rxq_tunnel_ptype_update(rxq_ctrl);
 566                 }
 567         }
 568 }
 569
 570 /**
 571  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 572  * @p flow if no other flow uses it with the same kind of request.
 573  *
 574  * @param dev
 575  *   Pointer to Ethernet device.
 576  * @param[in] flow
 577  *   Pointer to the flow.
 578  */
 579 static void
 580 mlx5_flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 581 {
 582         struct priv *priv = dev->data->dev_private;
 583         const int mark = !!(flow->actions &
 584                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 585         const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 586         unsigned int i;
 587
 588         assert(dev->data->dev_started);
 589         for (i = 0; i != flow->rss.queue_num; ++i) {
 590                 int idx = (*flow->queue)[i];
 591                 struct mlx5_rxq_ctrl *rxq_ctrl =
 592                         container_of((*priv->rxqs)[idx],
 593                                      struct mlx5_rxq_ctrl, rxq);
 594
 595                 if (mark) {
 596                         rxq_ctrl->flow_mark_n--;
 597                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 598                 }
 599                 if (tunnel) {
 600                         unsigned int j;
 601
 602                         /* Decrease the counter matching the flow. */
 603                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 604                                 if ((tunnels_info[j].tunnel & flow->layers) ==
 605                                     tunnels_info[j].tunnel) {
 606                                         rxq_ctrl->flow_tunnels_n[j]--;
 607                                         break;
 608                                 }
 609                         }
 610                         mlx5_flow_rxq_tunnel_ptype_update(rxq_ctrl);
 611                 }
 612         }
 613 }
 614
 615 /**
 616  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 617  *
 618  * @param dev
 619  *   Pointer to Ethernet device.
 620  */
 621 static void
 622 mlx5_flow_rxq_flags_clear(struct rte_eth_dev *dev)
 623 {
 624         struct priv *priv = dev->data->dev_private;
 625         unsigned int i;
 626
 627         for (i = 0; i != priv->rxqs_n; ++i) {
 628                 struct mlx5_rxq_ctrl *rxq_ctrl;
 629                 unsigned int j;
 630
 631                 if (!(*priv->rxqs)[i])
 632                         continue;
 633                 rxq_ctrl = container_of((*priv->rxqs)[i],
 634                                         struct mlx5_rxq_ctrl, rxq);
 635                 rxq_ctrl->flow_mark_n = 0;
 636                 rxq_ctrl->rxq.mark = 0;
 637                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 638                         rxq_ctrl->flow_tunnels_n[j] = 0;
 639                 rxq_ctrl->rxq.tunnel = 0;
 640         }
 641 }
 642
 643 /*
 644  * Validate the flag action.
 645  *
 646  * @param[in] action_flags
 647  *   Bit-fields that holds the actions detected until now.
 648  * @param[out] error
 649  *   Pointer to error structure.
 650  *
 651  * @return
 652  *   0 on success, a negative errno value otherwise and rte_errno is set.
 653  */
 654 int
 655 mlx5_flow_validate_action_flag(uint64_t action_flags,
 656                                struct rte_flow_error *error)
 657 {
 658
 659         if (action_flags & MLX5_FLOW_ACTION_DROP)
 660                 return rte_flow_error_set(error, EINVAL,
 661                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 662                                           "can't drop and flag in same flow");
 663         if (action_flags & MLX5_FLOW_ACTION_MARK)
 664                 return rte_flow_error_set(error, EINVAL,
 665                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 666                                           "can't mark and flag in same flow");
 667         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 668                 return rte_flow_error_set(error, EINVAL,
 669                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 670                                           "can't have 2 flag"
 671                                           " actions in same flow");
 672         return 0;
 673 }
 674
 675 /*
 676  * Validate the mark action.
 677  *
 678  * @param[in] action
 679  *   Pointer to the queue action.
 680  * @param[in] action_flags
 681  *   Bit-fields that holds the actions detected until now.
 682  * @param[out] error
 683  *   Pointer to error structure.
 684  *
 685  * @return
 686  *   0 on success, a negative errno value otherwise and rte_errno is set.
 687  */
 688 int
 689 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 690                                uint64_t action_flags,
 691                                struct rte_flow_error *error)
 692 {
 693         const struct rte_flow_action_mark *mark = action->conf;
 694
 695         if (!mark)
 696                 return rte_flow_error_set(error, EINVAL,
 697                                           RTE_FLOW_ERROR_TYPE_ACTION,
 698                                           action,
 699                                           "configuration cannot be null");
 700         if (mark->id >= MLX5_FLOW_MARK_MAX)
 701                 return rte_flow_error_set(error, EINVAL,
 702                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 703                                           &mark->id,
 704                                           "mark id must in 0 <= id < "
 705                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 706         if (action_flags & MLX5_FLOW_ACTION_DROP)
 707                 return rte_flow_error_set(error, EINVAL,
 708                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 709                                           "can't drop and mark 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 flag and mark in same flow");
 714         if (action_flags & MLX5_FLOW_ACTION_MARK)
 715                 return rte_flow_error_set(error, EINVAL,
 716                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 717                                           "can't have 2 mark actions in same"
 718                                           " flow");
 719         return 0;
 720 }
 721
 722 /*
 723  * Validate the drop action.
 724  *
 725  * @param[in] action_flags
 726  *   Bit-fields that holds the actions detected until now.
 727  * @param[out] error
 728  *   Pointer to error structure.
 729  *
 730  * @return
 731  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 732  */
 733 int
 734 mlx5_flow_validate_action_drop(uint64_t action_flags,
 735                                struct rte_flow_error *error)
 736 {
 737         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 738                 return rte_flow_error_set(error, EINVAL,
 739                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 740                                           "can't drop and flag in same flow");
 741         if (action_flags & MLX5_FLOW_ACTION_MARK)
 742                 return rte_flow_error_set(error, EINVAL,
 743                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 744                                           "can't drop and mark in same flow");
 745         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 746                 return rte_flow_error_set(error, EINVAL,
 747                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 748                                           "can't have 2 fate actions in"
 749                                           " same flow");
 750         return 0;
 751 }
 752
 753 /*
 754  * Validate the queue action.
 755  *
 756  * @param[in] action
 757  *   Pointer to the queue action.
 758  * @param[in] action_flags
 759  *   Bit-fields that holds the actions detected until now.
 760  * @param[in] dev
 761  *   Pointer to the Ethernet device structure.
 762  * @param[out] error
 763  *   Pointer to error structure.
 764  *
 765  * @return
 766  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 767  */
 768 int
 769 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
 770                                 uint64_t action_flags,
 771                                 struct rte_eth_dev *dev,
 772                                 struct rte_flow_error *error)
 773 {
 774         struct priv *priv = dev->data->dev_private;
 775         const struct rte_flow_action_queue *queue = action->conf;
 776
 777         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 778                 return rte_flow_error_set(error, EINVAL,
 779                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 780                                           "can't have 2 fate actions in"
 781                                           " same flow");
 782         if (queue->index >= priv->rxqs_n)
 783                 return rte_flow_error_set(error, EINVAL,
 784                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 785                                           &queue->index,
 786                                           "queue index out of range");
 787         if (!(*priv->rxqs)[queue->index])
 788                 return rte_flow_error_set(error, EINVAL,
 789                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 790                                           &queue->index,
 791                                           "queue is not configured");
 792         return 0;
 793 }
 794
 795 /*
 796  * Validate the rss action.
 797  *
 798  * @param[in] action
 799  *   Pointer to the queue action.
 800  * @param[in] action_flags
 801  *   Bit-fields that holds the actions detected until now.
 802  * @param[in] dev
 803  *   Pointer to the Ethernet device structure.
 804  * @param[out] error
 805  *   Pointer to error structure.
 806  *
 807  * @return
 808  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 809  */
 810 int
 811 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
 812                               uint64_t action_flags,
 813                               struct rte_eth_dev *dev,
 814                               struct rte_flow_error *error)
 815 {
 816         struct priv *priv = dev->data->dev_private;
 817         const struct rte_flow_action_rss *rss = action->conf;
 818         unsigned int i;
 819
 820         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 821                 return rte_flow_error_set(error, EINVAL,
 822                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 823                                           "can't have 2 fate actions"
 824                                           " in same flow");
 825         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
 826             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
 827                 return rte_flow_error_set(error, ENOTSUP,
 828                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 829                                           &rss->func,
 830                                           "RSS hash function not supported");
 831 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 832         if (rss->level > 2)
 833 #else
 834         if (rss->level > 1)
 835 #endif
 836                 return rte_flow_error_set(error, ENOTSUP,
 837                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 838                                           &rss->level,
 839                                           "tunnel RSS is not supported");
 840         if (rss->key_len < MLX5_RSS_HASH_KEY_LEN)
 841                 return rte_flow_error_set(error, ENOTSUP,
 842                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 843                                           &rss->key_len,
 844                                           "RSS hash key too small");
 845         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
 846                 return rte_flow_error_set(error, ENOTSUP,
 847                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 848                                           &rss->key_len,
 849                                           "RSS hash key too large");
 850         if (rss->queue_num > priv->config.ind_table_max_size)
 851                 return rte_flow_error_set(error, ENOTSUP,
 852                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 853                                           &rss->queue_num,
 854                                           "number of queues too large");
 855         if (rss->types & MLX5_RSS_HF_MASK)
 856                 return rte_flow_error_set(error, ENOTSUP,
 857                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 858                                           &rss->types,
 859                                           "some RSS protocols are not"
 860                                           " supported");
 861         for (i = 0; i != rss->queue_num; ++i) {
 862                 if (!(*priv->rxqs)[rss->queue[i]])
 863                         return rte_flow_error_set
 864                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 865                                  &rss->queue[i], "queue is not configured");
 866         }
 867         return 0;
 868 }
 869
 870 /*
 871  * Validate the count action.
 872  *
 873  * @param[in] dev
 874  *   Pointer to the Ethernet device structure.
 875  * @param[out] error
 876  *   Pointer to error structure.
 877  *
 878  * @return
 879  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 880  */
 881 int
 882 mlx5_flow_validate_action_count(struct rte_eth_dev *dev,
 883                                 struct rte_flow_error *error)
 884 {
 885         struct priv *priv = dev->data->dev_private;
 886
 887         if (!priv->config.flow_counter_en)
 888                 return rte_flow_error_set(error, ENOTSUP,
 889                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 890                                           "flow counters are not supported.");
 891         return 0;
 892 }
 893
 894 /**
 895  * Verify the @p attributes will be correctly understood by the NIC and store
 896  * them in the @p flow if everything is correct.
 897  *
 898  * @param[in] dev
 899  *   Pointer to the Ethernet device structure.
 900  * @param[in] attributes
 901  *   Pointer to flow attributes
 902  * @param[out] error
 903  *   Pointer to error structure.
 904  *
 905  * @return
 906  *   0 on success, a negative errno value otherwise and rte_errno is set.
 907  */
 908 int
 909 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
 910                               const struct rte_flow_attr *attributes,
 911                               struct rte_flow_error *error)
 912 {
 913         struct priv *priv = dev->data->dev_private;
 914         uint32_t priority_max = priv->config.flow_prio - 1;
 915
 916         if (attributes->group)
 917                 return rte_flow_error_set(error, ENOTSUP,
 918                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 919                                           NULL, "groups is not supported");
 920         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
 921             attributes->priority >= priority_max)
 922                 return rte_flow_error_set(error, ENOTSUP,
 923                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 924                                           NULL, "priority out of range");
 925         if (attributes->egress)
 926                 return rte_flow_error_set(error, ENOTSUP,
 927                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 928                                           "egress is not supported");
 929         if (attributes->transfer)
 930                 return rte_flow_error_set(error, ENOTSUP,
 931                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
 932                                           NULL, "transfer is not supported");
 933         if (!attributes->ingress)
 934                 return rte_flow_error_set(error, EINVAL,
 935                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 936                                           NULL,
 937                                           "ingress attribute is mandatory");
 938         return 0;
 939 }
 940
 941 /**
 942  * Validate Ethernet item.
 943  *
 944  * @param[in] item
 945  *   Item specification.
 946  * @param[in] item_flags
 947  *   Bit-fields that holds the items detected until now.
 948  * @param[out] error
 949  *   Pointer to error structure.
 950  *
 951  * @return
 952  *   0 on success, a negative errno value otherwise and rte_errno is set.
 953  */
 954 int
 955 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
 956                             uint64_t item_flags,
 957                             struct rte_flow_error *error)
 958 {
 959         const struct rte_flow_item_eth *mask = item->mask;
 960         const struct rte_flow_item_eth nic_mask = {
 961                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 962                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
 963                 .type = RTE_BE16(0xffff),
 964         };
 965         int ret;
 966         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
 967
 968         if (item_flags & MLX5_FLOW_LAYER_OUTER_L2)
 969                 return rte_flow_error_set(error, ENOTSUP,
 970                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 971                                           "3 levels of l2 are not supported");
 972         if ((item_flags & MLX5_FLOW_LAYER_INNER_L2) && !tunnel)
 973                 return rte_flow_error_set(error, ENOTSUP,
 974                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 975                                           "2 L2 without tunnel are not supported");
 976         if (!mask)
 977                 mask = &rte_flow_item_eth_mask;
 978         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
 979                                         (const uint8_t *)&nic_mask,
 980                                         sizeof(struct rte_flow_item_eth),
 981                                         error);
 982         return ret;
 983 }
 984
 985 /**
 986  * Validate VLAN item.
 987  *
 988  * @param[in] item
 989  *   Item specification.
 990  * @param[in] item_flags
 991  *   Bit-fields that holds the items detected until now.
 992  * @param[out] error
 993  *   Pointer to error structure.
 994  *
 995  * @return
 996  *   0 on success, a negative errno value otherwise and rte_errno is set.
 997  */
 998 int
 999 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1000                              int64_t item_flags,
1001                              struct rte_flow_error *error)
1002 {
1003         const struct rte_flow_item_vlan *spec = item->spec;
1004         const struct rte_flow_item_vlan *mask = item->mask;
1005         const struct rte_flow_item_vlan nic_mask = {
1006                 .tci = RTE_BE16(0x0fff),
1007                 .inner_type = RTE_BE16(0xffff),
1008         };
1009         uint16_t vlan_tag = 0;
1010         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1011         int ret;
1012         const uint32_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1013                                         MLX5_FLOW_LAYER_INNER_L4) :
1014                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1015                                         MLX5_FLOW_LAYER_OUTER_L4);
1016         const uint32_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1017                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1018
1019         if (item_flags & vlanm)
1020                 return rte_flow_error_set(error, EINVAL,
1021                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1022                                           "VLAN layer already configured");
1023         else if ((item_flags & l34m) != 0)
1024                 return rte_flow_error_set(error, EINVAL,
1025                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1026                                           "L2 layer cannot follow L3/L4 layer");
1027         if (!mask)
1028                 mask = &rte_flow_item_vlan_mask;
1029         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1030                                         (const uint8_t *)&nic_mask,
1031                                         sizeof(struct rte_flow_item_vlan),
1032                                         error);
1033         if (ret)
1034                 return ret;
1035         if (spec) {
1036                 vlan_tag = spec->tci;
1037                 vlan_tag &= mask->tci;
1038         }
1039         /*
1040          * From verbs perspective an empty VLAN is equivalent
1041          * to a packet without VLAN layer.
1042          */
1043         if (!vlan_tag)
1044                 return rte_flow_error_set(error, EINVAL,
1045                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1046                                           item->spec,
1047                                           "VLAN cannot be empty");
1048         return 0;
1049 }
1050
1051 /**
1052  * Validate IPV4 item.
1053  *
1054  * @param[in] item
1055  *   Item specification.
1056  * @param[in] item_flags
1057  *   Bit-fields that holds the items detected until now.
1058  * @param[out] error
1059  *   Pointer to error structure.
1060  *
1061  * @return
1062  *   0 on success, a negative errno value otherwise and rte_errno is set.
1063  */
1064 int
1065 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1066                              int64_t item_flags,
1067                              struct rte_flow_error *error)
1068 {
1069         const struct rte_flow_item_ipv4 *mask = item->mask;
1070         const struct rte_flow_item_ipv4 nic_mask = {
1071                 .hdr = {
1072                         .src_addr = RTE_BE32(0xffffffff),
1073                         .dst_addr = RTE_BE32(0xffffffff),
1074                         .type_of_service = 0xff,
1075                         .next_proto_id = 0xff,
1076                 },
1077         };
1078         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1079         int ret;
1080
1081         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1082                                    MLX5_FLOW_LAYER_OUTER_L3))
1083                 return rte_flow_error_set(error, ENOTSUP,
1084                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1085                                           "multiple L3 layers not supported");
1086         else if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1087                                         MLX5_FLOW_LAYER_OUTER_L4))
1088                 return rte_flow_error_set(error, EINVAL,
1089                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1090                                           "L3 cannot follow an L4 layer.");
1091         if (!mask)
1092                 mask = &rte_flow_item_ipv4_mask;
1093         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1094                                         (const uint8_t *)&nic_mask,
1095                                         sizeof(struct rte_flow_item_ipv4),
1096                                         error);
1097         if (ret < 0)
1098                 return ret;
1099         return 0;
1100 }
1101
1102 /**
1103  * Validate IPV6 item.
1104  *
1105  * @param[in] item
1106  *   Item specification.
1107  * @param[in] item_flags
1108  *   Bit-fields that holds the items detected until now.
1109  * @param[out] error
1110  *   Pointer to error structure.
1111  *
1112  * @return
1113  *   0 on success, a negative errno value otherwise and rte_errno is set.
1114  */
1115 int
1116 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1117                              uint64_t item_flags,
1118                              struct rte_flow_error *error)
1119 {
1120         const struct rte_flow_item_ipv6 *mask = item->mask;
1121         const struct rte_flow_item_ipv6 nic_mask = {
1122                 .hdr = {
1123                         .src_addr =
1124                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1125                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1126                         .dst_addr =
1127                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1128                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1129                         .vtc_flow = RTE_BE32(0xffffffff),
1130                         .proto = 0xff,
1131                         .hop_limits = 0xff,
1132                 },
1133         };
1134         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1135         int ret;
1136
1137         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1138                                    MLX5_FLOW_LAYER_OUTER_L3))
1139                 return rte_flow_error_set(error, ENOTSUP,
1140                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1141                                           "multiple L3 layers not supported");
1142         else if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1143                                         MLX5_FLOW_LAYER_OUTER_L4))
1144                 return rte_flow_error_set(error, EINVAL,
1145                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1146                                           "L3 cannot follow an L4 layer.");
1147         /*
1148          * IPv6 is not recognised by the NIC inside a GRE tunnel.
1149          * Such support has to be disabled as the rule will be
1150          * accepted.  Issue reproduced with Mellanox OFED 4.3-3.0.2.1 and
1151          * Mellanox OFED 4.4-1.0.0.0.
1152          */
1153         if (tunnel && item_flags & MLX5_FLOW_LAYER_GRE)
1154                 return rte_flow_error_set(error, ENOTSUP,
1155                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1156                                           "IPv6 inside a GRE tunnel is"
1157                                           " not recognised.");
1158         if (!mask)
1159                 mask = &rte_flow_item_ipv6_mask;
1160         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1161                                         (const uint8_t *)&nic_mask,
1162                                         sizeof(struct rte_flow_item_ipv6),
1163                                         error);
1164         if (ret < 0)
1165                 return ret;
1166         return 0;
1167 }
1168
1169 /**
1170  * Validate UDP item.
1171  *
1172  * @param[in] item
1173  *   Item specification.
1174  * @param[in] item_flags
1175  *   Bit-fields that holds the items detected until now.
1176  * @param[in] target_protocol
1177  *   The next protocol in the previous item.
1178  * @param[out] error
1179  *   Pointer to error structure.
1180  *
1181  * @return
1182  *   0 on success, a negative errno value otherwise and rte_errno is set.
1183  */
1184 int
1185 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1186                             uint64_t item_flags,
1187                             uint8_t target_protocol,
1188                             struct rte_flow_error *error)
1189 {
1190         const struct rte_flow_item_udp *mask = item->mask;
1191         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1192         int ret;
1193
1194         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1195                 return rte_flow_error_set(error, EINVAL,
1196                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1197                                           "protocol filtering not compatible"
1198                                           " with UDP layer");
1199         if (!(item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1200                                      MLX5_FLOW_LAYER_OUTER_L3)))
1201                 return rte_flow_error_set(error, EINVAL,
1202                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1203                                           "L3 is mandatory to filter on L4");
1204         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1205                                    MLX5_FLOW_LAYER_OUTER_L4))
1206                 return rte_flow_error_set(error, EINVAL,
1207                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1208                                           "L4 layer is already present");
1209         if (!mask)
1210                 mask = &rte_flow_item_udp_mask;
1211         ret = mlx5_flow_item_acceptable
1212                 (item, (const uint8_t *)mask,
1213                  (const uint8_t *)&rte_flow_item_udp_mask,
1214                  sizeof(struct rte_flow_item_udp), error);
1215         if (ret < 0)
1216                 return ret;
1217         return 0;
1218 }
1219
1220 /**
1221  * Validate TCP item.
1222  *
1223  * @param[in] item
1224  *   Item specification.
1225  * @param[in] item_flags
1226  *   Bit-fields that holds the items detected until now.
1227  * @param[in] target_protocol
1228  *   The next protocol in the previous item.
1229  * @param[out] error
1230  *   Pointer to error structure.
1231  *
1232  * @return
1233  *   0 on success, a negative errno value otherwise and rte_errno is set.
1234  */
1235 int
1236 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1237                             uint64_t item_flags,
1238                             uint8_t target_protocol,
1239                             struct rte_flow_error *error)
1240 {
1241         const struct rte_flow_item_tcp *mask = item->mask;
1242         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1243         int ret;
1244
1245         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1246                 return rte_flow_error_set(error, EINVAL,
1247                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1248                                           "protocol filtering not compatible"
1249                                           " with TCP layer");
1250         if (!(item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1251                                      MLX5_FLOW_LAYER_OUTER_L3)))
1252                 return rte_flow_error_set(error, EINVAL,
1253                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1254                                           "L3 is mandatory to filter on L4");
1255         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1256                                    MLX5_FLOW_LAYER_OUTER_L4))
1257                 return rte_flow_error_set(error, EINVAL,
1258                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1259                                           "L4 layer is already present");
1260         if (!mask)
1261                 mask = &rte_flow_item_tcp_mask;
1262         ret = mlx5_flow_item_acceptable
1263                 (item, (const uint8_t *)mask,
1264                  (const uint8_t *)&rte_flow_item_tcp_mask,
1265                  sizeof(struct rte_flow_item_tcp), error);
1266         if (ret < 0)
1267                 return ret;
1268         return 0;
1269 }
1270
1271 /**
1272  * Validate VXLAN item.
1273  *
1274  * @param[in] item
1275  *   Item specification.
1276  * @param[in] item_flags
1277  *   Bit-fields that holds the items detected until now.
1278  * @param[in] target_protocol
1279  *   The next protocol in the previous item.
1280  * @param[out] error
1281  *   Pointer to error structure.
1282  *
1283  * @return
1284  *   0 on success, a negative errno value otherwise and rte_errno is set.
1285  */
1286 int
1287 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1288                               uint64_t item_flags,
1289                               struct rte_flow_error *error)
1290 {
1291         const struct rte_flow_item_vxlan *spec = item->spec;
1292         const struct rte_flow_item_vxlan *mask = item->mask;
1293         int ret;
1294         union vni {
1295                 uint32_t vlan_id;
1296                 uint8_t vni[4];
1297         } id = { .vlan_id = 0, };
1298         uint32_t vlan_id = 0;
1299
1300
1301         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1302                 return rte_flow_error_set(error, ENOTSUP,
1303                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1304                                           "a tunnel is already present");
1305         /*
1306          * Verify only UDPv4 is present as defined in
1307          * https://tools.ietf.org/html/rfc7348
1308          */
1309         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1310                 return rte_flow_error_set(error, EINVAL,
1311                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1312                                           "no outer UDP layer found");
1313         if (!mask)
1314                 mask = &rte_flow_item_vxlan_mask;
1315         ret = mlx5_flow_item_acceptable
1316                 (item, (const uint8_t *)mask,
1317                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1318                  sizeof(struct rte_flow_item_vxlan),
1319                  error);
1320         if (ret < 0)
1321                 return ret;
1322         if (spec) {
1323                 memcpy(&id.vni[1], spec->vni, 3);
1324                 vlan_id = id.vlan_id;
1325                 memcpy(&id.vni[1], mask->vni, 3);
1326                 vlan_id &= id.vlan_id;
1327         }
1328         /*
1329          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1330          * only this layer is defined in the Verbs specification it is
1331          * interpreted as wildcard and all packets will match this
1332          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1333          * udp), all packets matching the layers before will also
1334          * match this rule.  To avoid such situation, VNI 0 is
1335          * currently refused.
1336          */
1337         if (!vlan_id)
1338                 return rte_flow_error_set(error, ENOTSUP,
1339                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1340                                           "VXLAN vni cannot be 0");
1341         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1342                 return rte_flow_error_set(error, ENOTSUP,
1343                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1344                                           "VXLAN tunnel must be fully defined");
1345         return 0;
1346 }
1347
1348 /**
1349  * Validate VXLAN_GPE item.
1350  *
1351  * @param[in] item
1352  *   Item specification.
1353  * @param[in] item_flags
1354  *   Bit-fields that holds the items detected until now.
1355  * @param[in] priv
1356  *   Pointer to the private data structure.
1357  * @param[in] target_protocol
1358  *   The next protocol in the previous item.
1359  * @param[out] error
1360  *   Pointer to error structure.
1361  *
1362  * @return
1363  *   0 on success, a negative errno value otherwise and rte_errno is set.
1364  */
1365 int
1366 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1367                                   uint64_t item_flags,
1368                                   struct rte_eth_dev *dev,
1369                                   struct rte_flow_error *error)
1370 {
1371         struct priv *priv = dev->data->dev_private;
1372         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1373         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1374         int ret;
1375         union vni {
1376                 uint32_t vlan_id;
1377                 uint8_t vni[4];
1378         } id = { .vlan_id = 0, };
1379         uint32_t vlan_id = 0;
1380
1381         if (!priv->config.l3_vxlan_en)
1382                 return rte_flow_error_set(error, ENOTSUP,
1383                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1384                                           "L3 VXLAN is not enabled by device"
1385                                           " parameter and/or not configured in"
1386                                           " firmware");
1387         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1388                 return rte_flow_error_set(error, ENOTSUP,
1389                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1390                                           "a tunnel is already present");
1391         /*
1392          * Verify only UDPv4 is present as defined in
1393          * https://tools.ietf.org/html/rfc7348
1394          */
1395         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1396                 return rte_flow_error_set(error, EINVAL,
1397                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1398                                           "no outer UDP layer found");
1399         if (!mask)
1400                 mask = &rte_flow_item_vxlan_gpe_mask;
1401         ret = mlx5_flow_item_acceptable
1402                 (item, (const uint8_t *)mask,
1403                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1404                  sizeof(struct rte_flow_item_vxlan_gpe),
1405                  error);
1406         if (ret < 0)
1407                 return ret;
1408         if (spec) {
1409                 if (spec->protocol)
1410                         return rte_flow_error_set(error, ENOTSUP,
1411                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1412                                                   item,
1413                                                   "VxLAN-GPE protocol"
1414                                                   " not supported");
1415                 memcpy(&id.vni[1], spec->vni, 3);
1416                 vlan_id = id.vlan_id;
1417                 memcpy(&id.vni[1], mask->vni, 3);
1418                 vlan_id &= id.vlan_id;
1419         }
1420         /*
1421          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1422          * layer is defined in the Verbs specification it is interpreted as
1423          * wildcard and all packets will match this rule, if it follows a full
1424          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1425          * before will also match this rule.  To avoid such situation, VNI 0
1426          * is currently refused.
1427          */
1428         if (!vlan_id)
1429                 return rte_flow_error_set(error, ENOTSUP,
1430                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1431                                           "VXLAN-GPE vni cannot be 0");
1432         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1433                 return rte_flow_error_set(error, ENOTSUP,
1434                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1435                                           "VXLAN-GPE tunnel must be fully"
1436                                           " defined");
1437         return 0;
1438 }
1439
1440 /**
1441  * Validate GRE item.
1442  *
1443  * @param[in] item
1444  *   Item specification.
1445  * @param[in] item_flags
1446  *   Bit flags to mark detected items.
1447  * @param[in] target_protocol
1448  *   The next protocol in the previous item.
1449  * @param[out] error
1450  *   Pointer to error structure.
1451  *
1452  * @return
1453  *   0 on success, a negative errno value otherwise and rte_errno is set.
1454  */
1455 int
1456 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
1457                             uint64_t item_flags,
1458                             uint8_t target_protocol,
1459                             struct rte_flow_error *error)
1460 {
1461         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
1462         const struct rte_flow_item_gre *mask = item->mask;
1463         int ret;
1464
1465         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
1466                 return rte_flow_error_set(error, EINVAL,
1467                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1468                                           "protocol filtering not compatible"
1469                                           " with this GRE layer");
1470         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1471                 return rte_flow_error_set(error, ENOTSUP,
1472                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1473                                           "a tunnel is already present");
1474         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
1475                 return rte_flow_error_set(error, ENOTSUP,
1476                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1477                                           "L3 Layer is missing");
1478         if (!mask)
1479                 mask = &rte_flow_item_gre_mask;
1480         ret = mlx5_flow_item_acceptable
1481                 (item, (const uint8_t *)mask,
1482                  (const uint8_t *)&rte_flow_item_gre_mask,
1483                  sizeof(struct rte_flow_item_gre), error);
1484         if (ret < 0)
1485                 return ret;
1486 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1487         if (spec && (spec->protocol & mask->protocol))
1488                 return rte_flow_error_set(error, ENOTSUP,
1489                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1490                                           "without MPLS support the"
1491                                           " specification cannot be used for"
1492                                           " filtering");
1493 #endif
1494         return 0;
1495 }
1496
1497 /**
1498  * Validate MPLS item.
1499  *
1500  * @param[in] item
1501  *   Item specification.
1502  * @param[in] item_flags
1503  *   Bit-fields that holds the items detected until now.
1504  * @param[in] target_protocol
1505  *   The next protocol in the previous item.
1506  * @param[out] error
1507  *   Pointer to error structure.
1508  *
1509  * @return
1510  *   0 on success, a negative errno value otherwise and rte_errno is set.
1511  */
1512 int
1513 mlx5_flow_validate_item_mpls(const struct rte_flow_item *item __rte_unused,
1514                              uint64_t item_flags __rte_unused,
1515                              uint8_t target_protocol __rte_unused,
1516                              struct rte_flow_error *error)
1517 {
1518 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1519         const struct rte_flow_item_mpls *mask = item->mask;
1520         int ret;
1521
1522         if (target_protocol != 0xff && target_protocol != IPPROTO_MPLS)
1523                 return rte_flow_error_set(error, EINVAL,
1524                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1525                                           "protocol filtering not compatible"
1526                                           " with MPLS layer");
1527         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1528                 return rte_flow_error_set(error, ENOTSUP,
1529                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1530                                           "a tunnel is already"
1531                                           " present");
1532         if (!mask)
1533                 mask = &rte_flow_item_mpls_mask;
1534         ret = mlx5_flow_item_acceptable
1535                 (item, (const uint8_t *)mask,
1536                  (const uint8_t *)&rte_flow_item_mpls_mask,
1537                  sizeof(struct rte_flow_item_mpls), error);
1538         if (ret < 0)
1539                 return ret;
1540         return 0;
1541 #endif
1542         return rte_flow_error_set(error, ENOTSUP,
1543                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
1544                                   "MPLS is not supported by Verbs, please"
1545                                   " update.");
1546 }
1547
1548 static int
1549 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
1550                    const struct rte_flow_attr *attr __rte_unused,
1551                    const struct rte_flow_item items[] __rte_unused,
1552                    const struct rte_flow_action actions[] __rte_unused,
1553                    struct rte_flow_error *error __rte_unused)
1554 {
1555         rte_errno = ENOTSUP;
1556         return -rte_errno;
1557 }
1558
1559 static struct mlx5_flow *
1560 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
1561                   const struct rte_flow_item items[] __rte_unused,
1562                   const struct rte_flow_action actions[] __rte_unused,
1563                   uint64_t *item_flags __rte_unused,
1564                   uint64_t *action_flags __rte_unused,
1565                   struct rte_flow_error *error __rte_unused)
1566 {
1567         rte_errno = ENOTSUP;
1568         return NULL;
1569 }
1570
1571 static int
1572 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
1573                     struct mlx5_flow *dev_flow __rte_unused,
1574                     const struct rte_flow_attr *attr __rte_unused,
1575                     const struct rte_flow_item items[] __rte_unused,
1576                     const struct rte_flow_action actions[] __rte_unused,
1577                     struct rte_flow_error *error __rte_unused)
1578 {
1579         rte_errno = ENOTSUP;
1580         return -rte_errno;
1581 }
1582
1583 static int
1584 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
1585                 struct rte_flow *flow __rte_unused,
1586                 struct rte_flow_error *error __rte_unused)
1587 {
1588         rte_errno = ENOTSUP;
1589         return -rte_errno;
1590 }
1591
1592 static void
1593 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
1594                  struct rte_flow *flow __rte_unused)
1595 {
1596 }
1597
1598 static void
1599 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
1600                   struct rte_flow *flow __rte_unused)
1601 {
1602 }
1603
1604 /* Void driver to protect from null pointer reference. */
1605 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
1606         .validate = flow_null_validate,
1607         .prepare = flow_null_prepare,
1608         .translate = flow_null_translate,
1609         .apply = flow_null_apply,
1610         .remove = flow_null_remove,
1611         .destroy = flow_null_destroy,
1612 };
1613
1614 /**
1615  * Select flow driver type according to flow attributes and device
1616  * configuration.
1617  *
1618  * @param[in] dev
1619  *   Pointer to the dev structure.
1620  * @param[in] attr
1621  *   Pointer to the flow attributes.
1622  *
1623  * @return
1624  *   flow driver type if supported, MLX5_FLOW_TYPE_MAX otherwise.
1625  */
1626 static enum mlx5_flow_drv_type
1627 flow_get_drv_type(struct rte_eth_dev *dev __rte_unused,
1628                   const struct rte_flow_attr *attr)
1629 {
1630         struct priv *priv __rte_unused = dev->data->dev_private;
1631         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
1632
1633         if (attr->transfer) {
1634                 type = MLX5_FLOW_TYPE_TCF;
1635         } else {
1636 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
1637                 type = priv->config.dv_flow_en ?  MLX5_FLOW_TYPE_DV :
1638                                                   MLX5_FLOW_TYPE_VERBS;
1639 #else
1640                 type = MLX5_FLOW_TYPE_VERBS;
1641 #endif
1642         }
1643         return type;
1644 }
1645
1646 #define flow_get_drv_ops(type) flow_drv_ops[type]
1647
1648 /**
1649  * Flow driver validation API. This abstracts calling driver specific functions.
1650  * The type of flow driver is determined according to flow attributes.
1651  *
1652  * @param[in] dev
1653  *   Pointer to the dev structure.
1654  * @param[in] attr
1655  *   Pointer to the flow attributes.
1656  * @param[in] items
1657  *   Pointer to the list of items.
1658  * @param[in] actions
1659  *   Pointer to the list of actions.
1660  * @param[out] error
1661  *   Pointer to the error structure.
1662  *
1663  * @return
1664  *   0 on success, a negative errno value otherwise and rte_ernno is set.
1665  */
1666 static inline int
1667 flow_drv_validate(struct rte_eth_dev *dev,
1668                   const struct rte_flow_attr *attr,
1669                   const struct rte_flow_item items[],
1670                   const struct rte_flow_action actions[],
1671                   struct rte_flow_error *error)
1672 {
1673         const struct mlx5_flow_driver_ops *fops;
1674         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
1675
1676         fops = flow_get_drv_ops(type);
1677         return fops->validate(dev, attr, items, actions, error);
1678 }
1679
1680 /**
1681  * Flow driver preparation API. This abstracts calling driver specific
1682  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1683  * calculates the size of memory required for device flow, allocates the memory,
1684  * initializes the device flow and returns the pointer.
1685  *
1686  * @param[in] attr
1687  *   Pointer to the flow attributes.
1688  * @param[in] items
1689  *   Pointer to the list of items.
1690  * @param[in] actions
1691  *   Pointer to the list of actions.
1692  * @param[out] item_flags
1693  *   Pointer to bit mask of all items detected.
1694  * @param[out] action_flags
1695  *   Pointer to bit mask of all actions detected.
1696  * @param[out] error
1697  *   Pointer to the error structure.
1698  *
1699  * @return
1700  *   Pointer to device flow on success, otherwise NULL and rte_ernno is set.
1701  */
1702 static inline struct mlx5_flow *
1703 flow_drv_prepare(struct rte_flow *flow,
1704                  const struct rte_flow_attr *attr,
1705                  const struct rte_flow_item items[],
1706                  const struct rte_flow_action actions[],
1707                  uint64_t *item_flags,
1708                  uint64_t *action_flags,
1709                  struct rte_flow_error *error)
1710 {
1711         const struct mlx5_flow_driver_ops *fops;
1712         enum mlx5_flow_drv_type type = flow->drv_type;
1713
1714         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1715         fops = flow_get_drv_ops(type);
1716         return fops->prepare(attr, items, actions, item_flags, action_flags,
1717                              error);
1718 }
1719
1720 /**
1721  * Flow driver translation API. This abstracts calling driver specific
1722  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1723  * translates a generic flow into a driver flow. flow_drv_prepare() must
1724  * precede.
1725  *
1726  *
1727  * @param[in] dev
1728  *   Pointer to the rte dev structure.
1729  * @param[in, out] dev_flow
1730  *   Pointer to the mlx5 flow.
1731  * @param[in] attr
1732  *   Pointer to the flow attributes.
1733  * @param[in] items
1734  *   Pointer to the list of items.
1735  * @param[in] actions
1736  *   Pointer to the list of actions.
1737  * @param[out] error
1738  *   Pointer to the error structure.
1739  *
1740  * @return
1741  *   0 on success, a negative errno value otherwise and rte_ernno is set.
1742  */
1743 static inline int
1744 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
1745                    const struct rte_flow_attr *attr,
1746                    const struct rte_flow_item items[],
1747                    const struct rte_flow_action actions[],
1748                    struct rte_flow_error *error)
1749 {
1750         const struct mlx5_flow_driver_ops *fops;
1751         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
1752
1753         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1754         fops = flow_get_drv_ops(type);
1755         return fops->translate(dev, dev_flow, attr, items, actions, error);
1756 }
1757
1758 /**
1759  * Flow driver apply API. This abstracts calling driver specific functions.
1760  * Parent flow (rte_flow) should have driver type (drv_type). It applies
1761  * translated driver flows on to device. flow_drv_translate() must precede.
1762  *
1763  * @param[in] dev
1764  *   Pointer to Ethernet device structure.
1765  * @param[in, out] flow
1766  *   Pointer to flow structure.
1767  * @param[out] error
1768  *   Pointer to error structure.
1769  *
1770  * @return
1771  *   0 on success, a negative errno value otherwise and rte_errno is set.
1772  */
1773 static inline int
1774 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
1775                struct rte_flow_error *error)
1776 {
1777         const struct mlx5_flow_driver_ops *fops;
1778         enum mlx5_flow_drv_type type = flow->drv_type;
1779
1780         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1781         fops = flow_get_drv_ops(type);
1782         return fops->apply(dev, flow, error);
1783 }
1784
1785 /**
1786  * Flow driver remove API. This abstracts calling driver specific functions.
1787  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1788  * on device. All the resources of the flow should be freed by calling
1789  * flow_dv_destroy().
1790  *
1791  * @param[in] dev
1792  *   Pointer to Ethernet device.
1793  * @param[in, out] flow
1794  *   Pointer to flow structure.
1795  */
1796 static inline void
1797 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
1798 {
1799         const struct mlx5_flow_driver_ops *fops;
1800         enum mlx5_flow_drv_type type = flow->drv_type;
1801
1802         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1803         fops = flow_get_drv_ops(type);
1804         fops->remove(dev, flow);
1805 }
1806
1807 /**
1808  * Flow driver destroy API. This abstracts calling driver specific functions.
1809  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1810  * on device and releases resources of the flow.
1811  *
1812  * @param[in] dev
1813  *   Pointer to Ethernet device.
1814  * @param[in, out] flow
1815  *   Pointer to flow structure.
1816  */
1817 static inline void
1818 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
1819 {
1820         const struct mlx5_flow_driver_ops *fops;
1821         enum mlx5_flow_drv_type type = flow->drv_type;
1822
1823         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1824         fops = flow_get_drv_ops(type);
1825         fops->destroy(dev, flow);
1826 }
1827
1828 /**
1829  * Validate a flow supported by the NIC.
1830  *
1831  * @see rte_flow_validate()
1832  * @see rte_flow_ops
1833  */
1834 int
1835 mlx5_flow_validate(struct rte_eth_dev *dev,
1836                    const struct rte_flow_attr *attr,
1837                    const struct rte_flow_item items[],
1838                    const struct rte_flow_action actions[],
1839                    struct rte_flow_error *error)
1840 {
1841         int ret;
1842
1843         ret = flow_drv_validate(dev, attr, items, actions, error);
1844         if (ret < 0)
1845                 return ret;
1846         return 0;
1847 }
1848
1849 /**
1850  * Get RSS action from the action list.
1851  *
1852  * @param[in] actions
1853  *   Pointer to the list of actions.
1854  *
1855  * @return
1856  *   Pointer to the RSS action if exist, else return NULL.
1857  */
1858 static const struct rte_flow_action_rss*
1859 mlx5_flow_get_rss_action(const struct rte_flow_action actions[])
1860 {
1861         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1862                 switch (actions->type) {
1863                 case RTE_FLOW_ACTION_TYPE_RSS:
1864                         return (const struct rte_flow_action_rss *)
1865                                actions->conf;
1866                 default:
1867                         break;
1868                 }
1869         }
1870         return NULL;
1871 }
1872
1873 static unsigned int
1874 mlx5_find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
1875 {
1876         const struct rte_flow_item *item;
1877         unsigned int has_vlan = 0;
1878
1879         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
1880                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
1881                         has_vlan = 1;
1882                         break;
1883                 }
1884         }
1885         if (has_vlan)
1886                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
1887                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
1888         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
1889                                MLX5_EXPANSION_ROOT_OUTER;
1890 }
1891
1892 /**
1893  * Create a flow and add it to @p list.
1894  *
1895  * @param dev
1896  *   Pointer to Ethernet device.
1897  * @param list
1898  *   Pointer to a TAILQ flow list.
1899  * @param[in] attr
1900  *   Flow rule attributes.
1901  * @param[in] items
1902  *   Pattern specification (list terminated by the END pattern item).
1903  * @param[in] actions
1904  *   Associated actions (list terminated by the END action).
1905  * @param[out] error
1906  *   Perform verbose error reporting if not NULL.
1907  *
1908  * @return
1909  *   A flow on success, NULL otherwise and rte_errno is set.
1910  */
1911 static struct rte_flow *
1912 mlx5_flow_list_create(struct rte_eth_dev *dev,
1913                       struct mlx5_flows *list,
1914                       const struct rte_flow_attr *attr,
1915                       const struct rte_flow_item items[],
1916                       const struct rte_flow_action actions[],
1917                       struct rte_flow_error *error)
1918 {
1919         struct rte_flow *flow = NULL;
1920         struct mlx5_flow *dev_flow;
1921         uint64_t action_flags = 0;
1922         uint64_t item_flags = 0;
1923         const struct rte_flow_action_rss *rss;
1924         union {
1925                 struct rte_flow_expand_rss buf;
1926                 uint8_t buffer[2048];
1927         } expand_buffer;
1928         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
1929         int ret;
1930         uint32_t i;
1931         uint32_t flow_size;
1932
1933         ret = flow_drv_validate(dev, attr, items, actions, error);
1934         if (ret < 0)
1935                 return NULL;
1936         flow_size = sizeof(struct rte_flow);
1937         rss = mlx5_flow_get_rss_action(actions);
1938         if (rss)
1939                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
1940                                             sizeof(void *));
1941         else
1942                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
1943         flow = rte_calloc(__func__, 1, flow_size, 0);
1944         flow->drv_type = flow_get_drv_type(dev, attr);
1945         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
1946                flow->drv_type < MLX5_FLOW_TYPE_MAX);
1947         flow->queue = (void *)(flow + 1);
1948         LIST_INIT(&flow->dev_flows);
1949         if (rss && rss->types) {
1950                 unsigned int graph_root;
1951
1952                 graph_root = mlx5_find_graph_root(items, rss->level);
1953                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
1954                                           items, rss->types,
1955                                           mlx5_support_expansion,
1956                                           graph_root);
1957                 assert(ret > 0 &&
1958                        (unsigned int)ret < sizeof(expand_buffer.buffer));
1959         } else {
1960                 buf->entries = 1;
1961                 buf->entry[0].pattern = (void *)(uintptr_t)items;
1962         }
1963         for (i = 0; i < buf->entries; ++i) {
1964                 dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern,
1965                                             actions, &item_flags, &action_flags,
1966                                             error);
1967                 if (!dev_flow)
1968                         goto error;
1969                 dev_flow->flow = flow;
1970                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
1971                 ret = flow_drv_translate(dev, dev_flow, attr,
1972                                          buf->entry[i].pattern,
1973                                          actions, error);
1974                 if (ret < 0)
1975                         goto error;
1976         }
1977         if (dev->data->dev_started) {
1978                 ret = flow_drv_apply(dev, flow, error);
1979                 if (ret < 0)
1980                         goto error;
1981         }
1982         TAILQ_INSERT_TAIL(list, flow, next);
1983         mlx5_flow_rxq_flags_set(dev, flow);
1984         return flow;
1985 error:
1986         ret = rte_errno; /* Save rte_errno before cleanup. */
1987         assert(flow);
1988         flow_drv_destroy(dev, flow);
1989         rte_free(flow);
1990         rte_errno = ret; /* Restore rte_errno. */
1991         return NULL;
1992 }
1993
1994 /**
1995  * Create a flow.
1996  *
1997  * @see rte_flow_create()
1998  * @see rte_flow_ops
1999  */
2000 struct rte_flow *
2001 mlx5_flow_create(struct rte_eth_dev *dev,
2002                  const struct rte_flow_attr *attr,
2003                  const struct rte_flow_item items[],
2004                  const struct rte_flow_action actions[],
2005                  struct rte_flow_error *error)
2006 {
2007         return mlx5_flow_list_create
2008                 (dev, &((struct priv *)dev->data->dev_private)->flows,
2009                  attr, items, actions, error);
2010 }
2011
2012 /**
2013  * Destroy a flow in a list.
2014  *
2015  * @param dev
2016  *   Pointer to Ethernet device.
2017  * @param list
2018  *   Pointer to a TAILQ flow list.
2019  * @param[in] flow
2020  *   Flow to destroy.
2021  */
2022 static void
2023 mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2024                        struct rte_flow *flow)
2025 {
2026         flow_drv_destroy(dev, flow);
2027         TAILQ_REMOVE(list, flow, next);
2028         /*
2029          * Update RX queue flags only if port is started, otherwise it is
2030          * already clean.
2031          */
2032         if (dev->data->dev_started)
2033                 mlx5_flow_rxq_flags_trim(dev, flow);
2034         rte_free(flow);
2035 }
2036
2037 /**
2038  * Destroy all flows.
2039  *
2040  * @param dev
2041  *   Pointer to Ethernet device.
2042  * @param list
2043  *   Pointer to a TAILQ flow list.
2044  */
2045 void
2046 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2047 {
2048         while (!TAILQ_EMPTY(list)) {
2049                 struct rte_flow *flow;
2050
2051                 flow = TAILQ_FIRST(list);
2052                 mlx5_flow_list_destroy(dev, list, flow);
2053         }
2054 }
2055
2056 /**
2057  * Remove all flows.
2058  *
2059  * @param dev
2060  *   Pointer to Ethernet device.
2061  * @param list
2062  *   Pointer to a TAILQ flow list.
2063  */
2064 void
2065 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2066 {
2067         struct rte_flow *flow;
2068
2069         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
2070                 flow_drv_remove(dev, flow);
2071         mlx5_flow_rxq_flags_clear(dev);
2072 }
2073
2074 /**
2075  * Add all flows.
2076  *
2077  * @param dev
2078  *   Pointer to Ethernet device.
2079  * @param list
2080  *   Pointer to a TAILQ flow list.
2081  *
2082  * @return
2083  *   0 on success, a negative errno value otherwise and rte_errno is set.
2084  */
2085 int
2086 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2087 {
2088         struct rte_flow *flow;
2089         struct rte_flow_error error;
2090         int ret = 0;
2091
2092         TAILQ_FOREACH(flow, list, next) {
2093                 ret = flow_drv_apply(dev, flow, &error);
2094                 if (ret < 0)
2095                         goto error;
2096                 mlx5_flow_rxq_flags_set(dev, flow);
2097         }
2098         return 0;
2099 error:
2100         ret = rte_errno; /* Save rte_errno before cleanup. */
2101         mlx5_flow_stop(dev, list);
2102         rte_errno = ret; /* Restore rte_errno. */
2103         return -rte_errno;
2104 }
2105
2106 /**
2107  * Verify the flow list is empty
2108  *
2109  * @param dev
2110  *  Pointer to Ethernet device.
2111  *
2112  * @return the number of flows not released.
2113  */
2114 int
2115 mlx5_flow_verify(struct rte_eth_dev *dev)
2116 {
2117         struct priv *priv = dev->data->dev_private;
2118         struct rte_flow *flow;
2119         int ret = 0;
2120
2121         TAILQ_FOREACH(flow, &priv->flows, next) {
2122                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2123                         dev->data->port_id, (void *)flow);
2124                 ++ret;
2125         }
2126         return ret;
2127 }
2128
2129 /**
2130  * Enable a control flow configured from the control plane.
2131  *
2132  * @param dev
2133  *   Pointer to Ethernet device.
2134  * @param eth_spec
2135  *   An Ethernet flow spec to apply.
2136  * @param eth_mask
2137  *   An Ethernet flow mask to apply.
2138  * @param vlan_spec
2139  *   A VLAN flow spec to apply.
2140  * @param vlan_mask
2141  *   A VLAN flow mask to apply.
2142  *
2143  * @return
2144  *   0 on success, a negative errno value otherwise and rte_errno is set.
2145  */
2146 int
2147 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2148                     struct rte_flow_item_eth *eth_spec,
2149                     struct rte_flow_item_eth *eth_mask,
2150                     struct rte_flow_item_vlan *vlan_spec,
2151                     struct rte_flow_item_vlan *vlan_mask)
2152 {
2153         struct priv *priv = dev->data->dev_private;
2154         const struct rte_flow_attr attr = {
2155                 .ingress = 1,
2156                 .priority = MLX5_FLOW_PRIO_RSVD,
2157         };
2158         struct rte_flow_item items[] = {
2159                 {
2160                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2161                         .spec = eth_spec,
2162                         .last = NULL,
2163                         .mask = eth_mask,
2164                 },
2165                 {
2166                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2167                                               RTE_FLOW_ITEM_TYPE_END,
2168                         .spec = vlan_spec,
2169                         .last = NULL,
2170                         .mask = vlan_mask,
2171                 },
2172                 {
2173                         .type = RTE_FLOW_ITEM_TYPE_END,
2174                 },
2175         };
2176         uint16_t queue[priv->reta_idx_n];
2177         struct rte_flow_action_rss action_rss = {
2178                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2179                 .level = 0,
2180                 .types = priv->rss_conf.rss_hf,
2181                 .key_len = priv->rss_conf.rss_key_len,
2182                 .queue_num = priv->reta_idx_n,
2183                 .key = priv->rss_conf.rss_key,
2184                 .queue = queue,
2185         };
2186         struct rte_flow_action actions[] = {
2187                 {
2188                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2189                         .conf = &action_rss,
2190                 },
2191                 {
2192                         .type = RTE_FLOW_ACTION_TYPE_END,
2193                 },
2194         };
2195         struct rte_flow *flow;
2196         struct rte_flow_error error;
2197         unsigned int i;
2198
2199         if (!priv->reta_idx_n) {
2200                 rte_errno = EINVAL;
2201                 return -rte_errno;
2202         }
2203         for (i = 0; i != priv->reta_idx_n; ++i)
2204                 queue[i] = (*priv->reta_idx)[i];
2205         flow = mlx5_flow_list_create(dev, &priv->ctrl_flows, &attr, items,
2206                                      actions, &error);
2207         if (!flow)
2208                 return -rte_errno;
2209         return 0;
2210 }
2211
2212 /**
2213  * Enable a flow control configured from the control plane.
2214  *
2215  * @param dev
2216  *   Pointer to Ethernet device.
2217  * @param eth_spec
2218  *   An Ethernet flow spec to apply.
2219  * @param eth_mask
2220  *   An Ethernet flow mask to apply.
2221  *
2222  * @return
2223  *   0 on success, a negative errno value otherwise and rte_errno is set.
2224  */
2225 int
2226 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2227                struct rte_flow_item_eth *eth_spec,
2228                struct rte_flow_item_eth *eth_mask)
2229 {
2230         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2231 }
2232
2233 /**
2234  * Destroy a flow.
2235  *
2236  * @see rte_flow_destroy()
2237  * @see rte_flow_ops
2238  */
2239 int
2240 mlx5_flow_destroy(struct rte_eth_dev *dev,
2241                   struct rte_flow *flow,
2242                   struct rte_flow_error *error __rte_unused)
2243 {
2244         struct priv *priv = dev->data->dev_private;
2245
2246         mlx5_flow_list_destroy(dev, &priv->flows, flow);
2247         return 0;
2248 }
2249
2250 /**
2251  * Destroy all flows.
2252  *
2253  * @see rte_flow_flush()
2254  * @see rte_flow_ops
2255  */
2256 int
2257 mlx5_flow_flush(struct rte_eth_dev *dev,
2258                 struct rte_flow_error *error __rte_unused)
2259 {
2260         struct priv *priv = dev->data->dev_private;
2261
2262         mlx5_flow_list_flush(dev, &priv->flows);
2263         return 0;
2264 }
2265
2266 /**
2267  * Isolated mode.
2268  *
2269  * @see rte_flow_isolate()
2270  * @see rte_flow_ops
2271  */
2272 int
2273 mlx5_flow_isolate(struct rte_eth_dev *dev,
2274                   int enable,
2275                   struct rte_flow_error *error)
2276 {
2277         struct priv *priv = dev->data->dev_private;
2278
2279         if (dev->data->dev_started) {
2280                 rte_flow_error_set(error, EBUSY,
2281                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2282                                    NULL,
2283                                    "port must be stopped first");
2284                 return -rte_errno;
2285         }
2286         priv->isolated = !!enable;
2287         if (enable)
2288                 dev->dev_ops = &mlx5_dev_ops_isolate;
2289         else
2290                 dev->dev_ops = &mlx5_dev_ops;
2291         return 0;
2292 }
2293
2294 /**
2295  * Query flow counter.
2296  *
2297  * @param flow
2298  *   Pointer to the flow.
2299  *
2300  * @return
2301  *   0 on success, a negative errno value otherwise and rte_errno is set.
2302  */
2303 static int
2304 mlx5_flow_query_count(struct rte_flow *flow __rte_unused,
2305                       void *data __rte_unused,
2306                       struct rte_flow_error *error)
2307 {
2308 #ifdef HAVE_IBV_DEVICE_COUNTERS_SET_SUPPORT
2309         if (flow->actions & MLX5_FLOW_ACTION_COUNT) {
2310                 struct rte_flow_query_count *qc = data;
2311                 uint64_t counters[2] = {0, 0};
2312                 struct ibv_query_counter_set_attr query_cs_attr = {
2313                         .cs = flow->counter->cs,
2314                         .query_flags = IBV_COUNTER_SET_FORCE_UPDATE,
2315                 };
2316                 struct ibv_counter_set_data query_out = {
2317                         .out = counters,
2318                         .outlen = 2 * sizeof(uint64_t),
2319                 };
2320                 int err = mlx5_glue->query_counter_set(&query_cs_attr,
2321                                                        &query_out);
2322
2323                 if (err)
2324                         return rte_flow_error_set
2325                                 (error, err,
2326                                  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2327                                  NULL,
2328                                  "cannot read counter");
2329                 qc->hits_set = 1;
2330                 qc->bytes_set = 1;
2331                 qc->hits = counters[0] - flow->counter->hits;
2332                 qc->bytes = counters[1] - flow->counter->bytes;
2333                 if (qc->reset) {
2334                         flow->counter->hits = counters[0];
2335                         flow->counter->bytes = counters[1];
2336                 }
2337                 return 0;
2338         }
2339         return rte_flow_error_set(error, ENOTSUP,
2340                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2341                                   NULL,
2342                                   "flow does not have counter");
2343 #endif
2344         return rte_flow_error_set(error, ENOTSUP,
2345                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2346                                   NULL,
2347                                   "counters are not available");
2348 }
2349
2350 /**
2351  * Query a flows.
2352  *
2353  * @see rte_flow_query()
2354  * @see rte_flow_ops
2355  */
2356 int
2357 mlx5_flow_query(struct rte_eth_dev *dev __rte_unused,
2358                 struct rte_flow *flow,
2359                 const struct rte_flow_action *actions,
2360                 void *data,
2361                 struct rte_flow_error *error)
2362 {
2363         int ret = 0;
2364
2365         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2366                 switch (actions->type) {
2367                 case RTE_FLOW_ACTION_TYPE_VOID:
2368                         break;
2369                 case RTE_FLOW_ACTION_TYPE_COUNT:
2370                         ret = mlx5_flow_query_count(flow, data, error);
2371                         break;
2372                 default:
2373                         return rte_flow_error_set(error, ENOTSUP,
2374                                                   RTE_FLOW_ERROR_TYPE_ACTION,
2375                                                   actions,
2376                                                   "action not supported");
2377                 }
2378                 if (ret < 0)
2379                         return ret;
2380         }
2381         return 0;
2382 }
2383
2384 /**
2385  * Convert a flow director filter to a generic flow.
2386  *
2387  * @param dev
2388  *   Pointer to Ethernet device.
2389  * @param fdir_filter
2390  *   Flow director filter to add.
2391  * @param attributes
2392  *   Generic flow parameters structure.
2393  *
2394  * @return
2395  *   0 on success, a negative errno value otherwise and rte_errno is set.
2396  */
2397 static int
2398 mlx5_fdir_filter_convert(struct rte_eth_dev *dev,
2399                          const struct rte_eth_fdir_filter *fdir_filter,
2400                          struct mlx5_fdir *attributes)
2401 {
2402         struct priv *priv = dev->data->dev_private;
2403         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2404         const struct rte_eth_fdir_masks *mask =
2405                 &dev->data->dev_conf.fdir_conf.mask;
2406
2407         /* Validate queue number. */
2408         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2409                 DRV_LOG(ERR, "port %u invalid queue number %d",
2410                         dev->data->port_id, fdir_filter->action.rx_queue);
2411                 rte_errno = EINVAL;
2412                 return -rte_errno;
2413         }
2414         attributes->attr.ingress = 1;
2415         attributes->items[0] = (struct rte_flow_item) {
2416                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2417                 .spec = &attributes->l2,
2418                 .mask = &attributes->l2_mask,
2419         };
2420         switch (fdir_filter->action.behavior) {
2421         case RTE_ETH_FDIR_ACCEPT:
2422                 attributes->actions[0] = (struct rte_flow_action){
2423                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2424                         .conf = &attributes->queue,
2425                 };
2426                 break;
2427         case RTE_ETH_FDIR_REJECT:
2428                 attributes->actions[0] = (struct rte_flow_action){
2429                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2430                 };
2431                 break;
2432         default:
2433                 DRV_LOG(ERR, "port %u invalid behavior %d",
2434                         dev->data->port_id,
2435                         fdir_filter->action.behavior);
2436                 rte_errno = ENOTSUP;
2437                 return -rte_errno;
2438         }
2439         attributes->queue.index = fdir_filter->action.rx_queue;
2440         /* Handle L3. */
2441         switch (fdir_filter->input.flow_type) {
2442         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2443         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2444         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2445                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2446                         .src_addr = input->flow.ip4_flow.src_ip,
2447                         .dst_addr = input->flow.ip4_flow.dst_ip,
2448                         .time_to_live = input->flow.ip4_flow.ttl,
2449                         .type_of_service = input->flow.ip4_flow.tos,
2450                 };
2451                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
2452                         .src_addr = mask->ipv4_mask.src_ip,
2453                         .dst_addr = mask->ipv4_mask.dst_ip,
2454                         .time_to_live = mask->ipv4_mask.ttl,
2455                         .type_of_service = mask->ipv4_mask.tos,
2456                         .next_proto_id = mask->ipv4_mask.proto,
2457                 };
2458                 attributes->items[1] = (struct rte_flow_item){
2459                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2460                         .spec = &attributes->l3,
2461                         .mask = &attributes->l3_mask,
2462                 };
2463                 break;
2464         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2465         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2466         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2467                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2468                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2469                         .proto = input->flow.ipv6_flow.proto,
2470                 };
2471
2472                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2473                        input->flow.ipv6_flow.src_ip,
2474                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2475                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2476                        input->flow.ipv6_flow.dst_ip,
2477                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2478                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2479                        mask->ipv6_mask.src_ip,
2480                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2481                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2482                        mask->ipv6_mask.dst_ip,
2483                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2484                 attributes->items[1] = (struct rte_flow_item){
2485                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2486                         .spec = &attributes->l3,
2487                         .mask = &attributes->l3_mask,
2488                 };
2489                 break;
2490         default:
2491                 DRV_LOG(ERR, "port %u invalid flow type%d",
2492                         dev->data->port_id, fdir_filter->input.flow_type);
2493                 rte_errno = ENOTSUP;
2494                 return -rte_errno;
2495         }
2496         /* Handle L4. */
2497         switch (fdir_filter->input.flow_type) {
2498         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2499                 attributes->l4.udp.hdr = (struct udp_hdr){
2500                         .src_port = input->flow.udp4_flow.src_port,
2501                         .dst_port = input->flow.udp4_flow.dst_port,
2502                 };
2503                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2504                         .src_port = mask->src_port_mask,
2505                         .dst_port = mask->dst_port_mask,
2506                 };
2507                 attributes->items[2] = (struct rte_flow_item){
2508                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2509                         .spec = &attributes->l4,
2510                         .mask = &attributes->l4_mask,
2511                 };
2512                 break;
2513         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2514                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2515                         .src_port = input->flow.tcp4_flow.src_port,
2516                         .dst_port = input->flow.tcp4_flow.dst_port,
2517                 };
2518                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2519                         .src_port = mask->src_port_mask,
2520                         .dst_port = mask->dst_port_mask,
2521                 };
2522                 attributes->items[2] = (struct rte_flow_item){
2523                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2524                         .spec = &attributes->l4,
2525                         .mask = &attributes->l4_mask,
2526                 };
2527                 break;
2528         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2529                 attributes->l4.udp.hdr = (struct udp_hdr){
2530                         .src_port = input->flow.udp6_flow.src_port,
2531                         .dst_port = input->flow.udp6_flow.dst_port,
2532                 };
2533                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2534                         .src_port = mask->src_port_mask,
2535                         .dst_port = mask->dst_port_mask,
2536                 };
2537                 attributes->items[2] = (struct rte_flow_item){
2538                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2539                         .spec = &attributes->l4,
2540                         .mask = &attributes->l4_mask,
2541                 };
2542                 break;
2543         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2544                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2545                         .src_port = input->flow.tcp6_flow.src_port,
2546                         .dst_port = input->flow.tcp6_flow.dst_port,
2547                 };
2548                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2549                         .src_port = mask->src_port_mask,
2550                         .dst_port = mask->dst_port_mask,
2551                 };
2552                 attributes->items[2] = (struct rte_flow_item){
2553                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2554                         .spec = &attributes->l4,
2555                         .mask = &attributes->l4_mask,
2556                 };
2557                 break;
2558         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2559         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2560                 break;
2561         default:
2562                 DRV_LOG(ERR, "port %u invalid flow type%d",
2563                         dev->data->port_id, fdir_filter->input.flow_type);
2564                 rte_errno = ENOTSUP;
2565                 return -rte_errno;
2566         }
2567         return 0;
2568 }
2569
2570 /**
2571  * Add new flow director filter and store it in list.
2572  *
2573  * @param dev
2574  *   Pointer to Ethernet device.
2575  * @param fdir_filter
2576  *   Flow director filter to add.
2577  *
2578  * @return
2579  *   0 on success, a negative errno value otherwise and rte_errno is set.
2580  */
2581 static int
2582 mlx5_fdir_filter_add(struct rte_eth_dev *dev,
2583                      const struct rte_eth_fdir_filter *fdir_filter)
2584 {
2585         struct priv *priv = dev->data->dev_private;
2586         struct mlx5_fdir attributes = {
2587                 .attr.group = 0,
2588                 .l2_mask = {
2589                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2590                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2591                         .type = 0,
2592                 },
2593         };
2594         struct rte_flow_error error;
2595         struct rte_flow *flow;
2596         int ret;
2597
2598         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
2599         if (ret)
2600                 return ret;
2601         flow = mlx5_flow_list_create(dev, &priv->flows, &attributes.attr,
2602                                      attributes.items, attributes.actions,
2603                                      &error);
2604         if (flow) {
2605                 DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id,
2606                         (void *)flow);
2607                 return 0;
2608         }
2609         return -rte_errno;
2610 }
2611
2612 /**
2613  * Delete specific filter.
2614  *
2615  * @param dev
2616  *   Pointer to Ethernet device.
2617  * @param fdir_filter
2618  *   Filter to be deleted.
2619  *
2620  * @return
2621  *   0 on success, a negative errno value otherwise and rte_errno is set.
2622  */
2623 static int
2624 mlx5_fdir_filter_delete(struct rte_eth_dev *dev __rte_unused,
2625                         const struct rte_eth_fdir_filter *fdir_filter
2626                         __rte_unused)
2627 {
2628         rte_errno = ENOTSUP;
2629         return -rte_errno;
2630 }
2631
2632 /**
2633  * Update queue for specific filter.
2634  *
2635  * @param dev
2636  *   Pointer to Ethernet device.
2637  * @param fdir_filter
2638  *   Filter to be updated.
2639  *
2640  * @return
2641  *   0 on success, a negative errno value otherwise and rte_errno is set.
2642  */
2643 static int
2644 mlx5_fdir_filter_update(struct rte_eth_dev *dev,
2645                         const struct rte_eth_fdir_filter *fdir_filter)
2646 {
2647         int ret;
2648
2649         ret = mlx5_fdir_filter_delete(dev, fdir_filter);
2650         if (ret)
2651                 return ret;
2652         return mlx5_fdir_filter_add(dev, fdir_filter);
2653 }
2654
2655 /**
2656  * Flush all filters.
2657  *
2658  * @param dev
2659  *   Pointer to Ethernet device.
2660  */
2661 static void
2662 mlx5_fdir_filter_flush(struct rte_eth_dev *dev)
2663 {
2664         struct priv *priv = dev->data->dev_private;
2665
2666         mlx5_flow_list_flush(dev, &priv->flows);
2667 }
2668
2669 /**
2670  * Get flow director information.
2671  *
2672  * @param dev
2673  *   Pointer to Ethernet device.
2674  * @param[out] fdir_info
2675  *   Resulting flow director information.
2676  */
2677 static void
2678 mlx5_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
2679 {
2680         struct rte_eth_fdir_masks *mask =
2681                 &dev->data->dev_conf.fdir_conf.mask;
2682
2683         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
2684         fdir_info->guarant_spc = 0;
2685         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
2686         fdir_info->max_flexpayload = 0;
2687         fdir_info->flow_types_mask[0] = 0;
2688         fdir_info->flex_payload_unit = 0;
2689         fdir_info->max_flex_payload_segment_num = 0;
2690         fdir_info->flex_payload_limit = 0;
2691         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
2692 }
2693
2694 /**
2695  * Deal with flow director operations.
2696  *
2697  * @param dev
2698  *   Pointer to Ethernet device.
2699  * @param filter_op
2700  *   Operation to perform.
2701  * @param arg
2702  *   Pointer to operation-specific structure.
2703  *
2704  * @return
2705  *   0 on success, a negative errno value otherwise and rte_errno is set.
2706  */
2707 static int
2708 mlx5_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
2709                     void *arg)
2710 {
2711         enum rte_fdir_mode fdir_mode =
2712                 dev->data->dev_conf.fdir_conf.mode;
2713
2714         if (filter_op == RTE_ETH_FILTER_NOP)
2715                 return 0;
2716         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
2717             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
2718                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
2719                         dev->data->port_id, fdir_mode);
2720                 rte_errno = EINVAL;
2721                 return -rte_errno;
2722         }
2723         switch (filter_op) {
2724         case RTE_ETH_FILTER_ADD:
2725                 return mlx5_fdir_filter_add(dev, arg);
2726         case RTE_ETH_FILTER_UPDATE:
2727                 return mlx5_fdir_filter_update(dev, arg);
2728         case RTE_ETH_FILTER_DELETE:
2729                 return mlx5_fdir_filter_delete(dev, arg);
2730         case RTE_ETH_FILTER_FLUSH:
2731                 mlx5_fdir_filter_flush(dev);
2732                 break;
2733         case RTE_ETH_FILTER_INFO:
2734                 mlx5_fdir_info_get(dev, arg);
2735                 break;
2736         default:
2737                 DRV_LOG(DEBUG, "port %u unknown operation %u",
2738                         dev->data->port_id, filter_op);
2739                 rte_errno = EINVAL;
2740                 return -rte_errno;
2741         }
2742         return 0;
2743 }
2744
2745 /**
2746  * Manage filter operations.
2747  *
2748  * @param dev
2749  *   Pointer to Ethernet device structure.
2750  * @param filter_type
2751  *   Filter type.
2752  * @param filter_op
2753  *   Operation to perform.
2754  * @param arg
2755  *   Pointer to operation-specific structure.
2756  *
2757  * @return
2758  *   0 on success, a negative errno value otherwise and rte_errno is set.
2759  */
2760 int
2761 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
2762                      enum rte_filter_type filter_type,
2763                      enum rte_filter_op filter_op,
2764                      void *arg)
2765 {
2766         switch (filter_type) {
2767         case RTE_ETH_FILTER_GENERIC:
2768                 if (filter_op != RTE_ETH_FILTER_GET) {
2769                         rte_errno = EINVAL;
2770                         return -rte_errno;
2771                 }
2772                 *(const void **)arg = &mlx5_flow_ops;
2773                 return 0;
2774         case RTE_ETH_FILTER_FDIR:
2775                 return mlx5_fdir_ctrl_func(dev, filter_op, arg);
2776         default:
2777                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
2778                         dev->data->port_id, filter_type);
2779                 rte_errno = ENOTSUP;
2780                 return -rte_errno;
2781         }
2782         return 0;
2783 }