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 int
 422 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 423                           const uint8_t *mask,
 424                           const uint8_t *nic_mask,
 425                           unsigned int size,
 426                           struct rte_flow_error *error)
 427 {
 428         unsigned int i;
 429
 430         assert(nic_mask);
 431         for (i = 0; i < size; ++i)
 432                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 433                         return rte_flow_error_set(error, ENOTSUP,
 434                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 435                                                   item,
 436                                                   "mask enables non supported"
 437                                                   " bits");
 438         if (!item->spec && (item->mask || item->last))
 439                 return rte_flow_error_set(error, EINVAL,
 440                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 441                                           "mask/last without a spec is not"
 442                                           " supported");
 443         if (item->spec && item->last) {
 444                 uint8_t spec[size];
 445                 uint8_t last[size];
 446                 unsigned int i;
 447                 int ret;
 448
 449                 for (i = 0; i < size; ++i) {
 450                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 451                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 452                 }
 453                 ret = memcmp(spec, last, size);
 454                 if (ret != 0)
 455                         return rte_flow_error_set(error, EINVAL,
 456                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 457                                                   item,
 458                                                   "range is not valid");
 459         }
 460         return 0;
 461 }
 462
 463 /**
 464  * Adjust the hash fields according to the @p flow information.
 465  *
 466  * @param[in] dev_flow.
 467  *   Pointer to the mlx5_flow.
 468  * @param[in] tunnel
 469  *   1 when the hash field is for a tunnel item.
 470  * @param[in] layer_types
 471  *   ETH_RSS_* types.
 472  * @param[in] hash_fields
 473  *   Item hash fields.
 474  *
 475  * @return
 476  *   The hash fileds that should be used.
 477  */
 478 uint64_t
 479 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 480                             int tunnel __rte_unused, 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 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 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                         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 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                         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 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[in] attr
 649  *   Attributes of flow that includes this action.
 650  * @param[out] error
 651  *   Pointer to error structure.
 652  *
 653  * @return
 654  *   0 on success, a negative errno value otherwise and rte_errno is set.
 655  */
 656 int
 657 mlx5_flow_validate_action_flag(uint64_t action_flags,
 658                                const struct rte_flow_attr *attr,
 659                                struct rte_flow_error *error)
 660 {
 661
 662         if (action_flags & MLX5_FLOW_ACTION_DROP)
 663                 return rte_flow_error_set(error, EINVAL,
 664                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 665                                           "can't drop and flag in same flow");
 666         if (action_flags & MLX5_FLOW_ACTION_MARK)
 667                 return rte_flow_error_set(error, EINVAL,
 668                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 669                                           "can't mark and flag in same flow");
 670         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 671                 return rte_flow_error_set(error, EINVAL,
 672                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 673                                           "can't have 2 flag"
 674                                           " actions in same flow");
 675         if (attr->egress)
 676                 return rte_flow_error_set(error, ENOTSUP,
 677                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 678                                           "flag action not supported for "
 679                                           "egress");
 680         return 0;
 681 }
 682
 683 /*
 684  * Validate the mark action.
 685  *
 686  * @param[in] action
 687  *   Pointer to the queue action.
 688  * @param[in] action_flags
 689  *   Bit-fields that holds the actions detected until now.
 690  * @param[in] attr
 691  *   Attributes of flow that includes this action.
 692  * @param[out] error
 693  *   Pointer to error structure.
 694  *
 695  * @return
 696  *   0 on success, a negative errno value otherwise and rte_errno is set.
 697  */
 698 int
 699 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 700                                uint64_t action_flags,
 701                                const struct rte_flow_attr *attr,
 702                                struct rte_flow_error *error)
 703 {
 704         const struct rte_flow_action_mark *mark = action->conf;
 705
 706         if (!mark)
 707                 return rte_flow_error_set(error, EINVAL,
 708                                           RTE_FLOW_ERROR_TYPE_ACTION,
 709                                           action,
 710                                           "configuration cannot be null");
 711         if (mark->id >= MLX5_FLOW_MARK_MAX)
 712                 return rte_flow_error_set(error, EINVAL,
 713                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 714                                           &mark->id,
 715                                           "mark id must in 0 <= id < "
 716                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 717         if (action_flags & MLX5_FLOW_ACTION_DROP)
 718                 return rte_flow_error_set(error, EINVAL,
 719                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 720                                           "can't drop and mark in same flow");
 721         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 722                 return rte_flow_error_set(error, EINVAL,
 723                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 724                                           "can't flag and mark in same flow");
 725         if (action_flags & MLX5_FLOW_ACTION_MARK)
 726                 return rte_flow_error_set(error, EINVAL,
 727                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 728                                           "can't have 2 mark actions in same"
 729                                           " flow");
 730         if (attr->egress)
 731                 return rte_flow_error_set(error, ENOTSUP,
 732                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 733                                           "mark action not supported for "
 734                                           "egress");
 735         return 0;
 736 }
 737
 738 /*
 739  * Validate the drop action.
 740  *
 741  * @param[in] action_flags
 742  *   Bit-fields that holds the actions detected until now.
 743  * @param[in] attr
 744  *   Attributes of flow that includes this action.
 745  * @param[out] error
 746  *   Pointer to error structure.
 747  *
 748  * @return
 749  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 750  */
 751 int
 752 mlx5_flow_validate_action_drop(uint64_t action_flags,
 753                                const struct rte_flow_attr *attr,
 754                                struct rte_flow_error *error)
 755 {
 756         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 757                 return rte_flow_error_set(error, EINVAL,
 758                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 759                                           "can't drop and flag in same flow");
 760         if (action_flags & MLX5_FLOW_ACTION_MARK)
 761                 return rte_flow_error_set(error, EINVAL,
 762                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 763                                           "can't drop and mark in same flow");
 764         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 765                 return rte_flow_error_set(error, EINVAL,
 766                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 767                                           "can't have 2 fate actions in"
 768                                           " same flow");
 769         if (attr->egress)
 770                 return rte_flow_error_set(error, ENOTSUP,
 771                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 772                                           "drop action not supported for "
 773                                           "egress");
 774         return 0;
 775 }
 776
 777 /*
 778  * Validate the queue action.
 779  *
 780  * @param[in] action
 781  *   Pointer to the queue action.
 782  * @param[in] action_flags
 783  *   Bit-fields that holds the actions detected until now.
 784  * @param[in] dev
 785  *   Pointer to the Ethernet device structure.
 786  * @param[in] attr
 787  *   Attributes of flow that includes this action.
 788  * @param[out] error
 789  *   Pointer to error structure.
 790  *
 791  * @return
 792  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 793  */
 794 int
 795 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
 796                                 uint64_t action_flags,
 797                                 struct rte_eth_dev *dev,
 798                                 const struct rte_flow_attr *attr,
 799                                 struct rte_flow_error *error)
 800 {
 801         struct priv *priv = dev->data->dev_private;
 802         const struct rte_flow_action_queue *queue = action->conf;
 803
 804         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 805                 return rte_flow_error_set(error, EINVAL,
 806                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 807                                           "can't have 2 fate actions in"
 808                                           " same flow");
 809         if (queue->index >= priv->rxqs_n)
 810                 return rte_flow_error_set(error, EINVAL,
 811                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 812                                           &queue->index,
 813                                           "queue index out of range");
 814         if (!(*priv->rxqs)[queue->index])
 815                 return rte_flow_error_set(error, EINVAL,
 816                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 817                                           &queue->index,
 818                                           "queue is not configured");
 819         if (attr->egress)
 820                 return rte_flow_error_set(error, ENOTSUP,
 821                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 822                                           "queue action not supported for "
 823                                           "egress");
 824         return 0;
 825 }
 826
 827 /*
 828  * Validate the rss action.
 829  *
 830  * @param[in] action
 831  *   Pointer to the queue action.
 832  * @param[in] action_flags
 833  *   Bit-fields that holds the actions detected until now.
 834  * @param[in] dev
 835  *   Pointer to the Ethernet device structure.
 836  * @param[in] attr
 837  *   Attributes of flow that includes this action.
 838  * @param[out] error
 839  *   Pointer to error structure.
 840  *
 841  * @return
 842  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 843  */
 844 int
 845 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
 846                               uint64_t action_flags,
 847                               struct rte_eth_dev *dev,
 848                               const struct rte_flow_attr *attr,
 849                               struct rte_flow_error *error)
 850 {
 851         struct priv *priv = dev->data->dev_private;
 852         const struct rte_flow_action_rss *rss = action->conf;
 853         unsigned int i;
 854
 855         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
 856                 return rte_flow_error_set(error, EINVAL,
 857                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 858                                           "can't have 2 fate actions"
 859                                           " in same flow");
 860         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
 861             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
 862                 return rte_flow_error_set(error, ENOTSUP,
 863                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 864                                           &rss->func,
 865                                           "RSS hash function not supported");
 866 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 867         if (rss->level > 2)
 868 #else
 869         if (rss->level > 1)
 870 #endif
 871                 return rte_flow_error_set(error, ENOTSUP,
 872                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 873                                           &rss->level,
 874                                           "tunnel RSS is not supported");
 875         if (rss->key_len < MLX5_RSS_HASH_KEY_LEN)
 876                 return rte_flow_error_set(error, ENOTSUP,
 877                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 878                                           &rss->key_len,
 879                                           "RSS hash key too small");
 880         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
 881                 return rte_flow_error_set(error, ENOTSUP,
 882                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 883                                           &rss->key_len,
 884                                           "RSS hash key too large");
 885         if (rss->queue_num > priv->config.ind_table_max_size)
 886                 return rte_flow_error_set(error, ENOTSUP,
 887                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 888                                           &rss->queue_num,
 889                                           "number of queues too large");
 890         if (rss->types & MLX5_RSS_HF_MASK)
 891                 return rte_flow_error_set(error, ENOTSUP,
 892                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 893                                           &rss->types,
 894                                           "some RSS protocols are not"
 895                                           " supported");
 896         for (i = 0; i != rss->queue_num; ++i) {
 897                 if (!(*priv->rxqs)[rss->queue[i]])
 898                         return rte_flow_error_set
 899                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 900                                  &rss->queue[i], "queue is not configured");
 901         }
 902         if (attr->egress)
 903                 return rte_flow_error_set(error, ENOTSUP,
 904                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 905                                           "rss action not supported for "
 906                                           "egress");
 907         return 0;
 908 }
 909
 910 /*
 911  * Validate the count action.
 912  *
 913  * @param[in] dev
 914  *   Pointer to the Ethernet device structure.
 915  * @param[in] attr
 916  *   Attributes of flow that includes this action.
 917  * @param[out] error
 918  *   Pointer to error structure.
 919  *
 920  * @return
 921  *   0 on success, a negative errno value otherwise and rte_ernno is set.
 922  */
 923 int
 924 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
 925                                 const struct rte_flow_attr *attr,
 926                                 struct rte_flow_error *error)
 927 {
 928         if (attr->egress)
 929                 return rte_flow_error_set(error, ENOTSUP,
 930                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 931                                           "count action not supported for "
 932                                           "egress");
 933         return 0;
 934 }
 935
 936 /**
 937  * Verify the @p attributes will be correctly understood by the NIC and store
 938  * them in the @p flow if everything is correct.
 939  *
 940  * @param[in] dev
 941  *   Pointer to the Ethernet device structure.
 942  * @param[in] attributes
 943  *   Pointer to flow attributes
 944  * @param[out] error
 945  *   Pointer to error structure.
 946  *
 947  * @return
 948  *   0 on success, a negative errno value otherwise and rte_errno is set.
 949  */
 950 int
 951 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
 952                               const struct rte_flow_attr *attributes,
 953                               struct rte_flow_error *error)
 954 {
 955         struct priv *priv = dev->data->dev_private;
 956         uint32_t priority_max = priv->config.flow_prio - 1;
 957
 958         if (attributes->group)
 959                 return rte_flow_error_set(error, ENOTSUP,
 960                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
 961                                           NULL, "groups is not supported");
 962         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
 963             attributes->priority >= priority_max)
 964                 return rte_flow_error_set(error, ENOTSUP,
 965                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
 966                                           NULL, "priority out of range");
 967         if (attributes->egress)
 968                 return rte_flow_error_set(error, ENOTSUP,
 969                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 970                                           "egress is not supported");
 971         if (attributes->transfer)
 972                 return rte_flow_error_set(error, ENOTSUP,
 973                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
 974                                           NULL, "transfer is not supported");
 975         if (!attributes->ingress)
 976                 return rte_flow_error_set(error, EINVAL,
 977                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
 978                                           NULL,
 979                                           "ingress attribute is mandatory");
 980         return 0;
 981 }
 982
 983 /**
 984  * Validate Ethernet item.
 985  *
 986  * @param[in] item
 987  *   Item specification.
 988  * @param[in] item_flags
 989  *   Bit-fields that holds the items detected until now.
 990  * @param[out] error
 991  *   Pointer to error structure.
 992  *
 993  * @return
 994  *   0 on success, a negative errno value otherwise and rte_errno is set.
 995  */
 996 int
 997 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
 998                             uint64_t item_flags,
 999                             struct rte_flow_error *error)
1000 {
1001         const struct rte_flow_item_eth *mask = item->mask;
1002         const struct rte_flow_item_eth nic_mask = {
1003                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1004                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1005                 .type = RTE_BE16(0xffff),
1006         };
1007         int ret;
1008         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1009
1010         if (item_flags & MLX5_FLOW_LAYER_OUTER_L2)
1011                 return rte_flow_error_set(error, ENOTSUP,
1012                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1013                                           "3 levels of l2 are not supported");
1014         if ((item_flags & MLX5_FLOW_LAYER_INNER_L2) && !tunnel)
1015                 return rte_flow_error_set(error, ENOTSUP,
1016                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1017                                           "2 L2 without tunnel are not supported");
1018         if (!mask)
1019                 mask = &rte_flow_item_eth_mask;
1020         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1021                                         (const uint8_t *)&nic_mask,
1022                                         sizeof(struct rte_flow_item_eth),
1023                                         error);
1024         return ret;
1025 }
1026
1027 /**
1028  * Validate VLAN item.
1029  *
1030  * @param[in] item
1031  *   Item specification.
1032  * @param[in] item_flags
1033  *   Bit-fields that holds the items detected until now.
1034  * @param[out] error
1035  *   Pointer to error structure.
1036  *
1037  * @return
1038  *   0 on success, a negative errno value otherwise and rte_errno is set.
1039  */
1040 int
1041 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1042                              int64_t item_flags,
1043                              struct rte_flow_error *error)
1044 {
1045         const struct rte_flow_item_vlan *spec = item->spec;
1046         const struct rte_flow_item_vlan *mask = item->mask;
1047         const struct rte_flow_item_vlan nic_mask = {
1048                 .tci = RTE_BE16(0x0fff),
1049                 .inner_type = RTE_BE16(0xffff),
1050         };
1051         uint16_t vlan_tag = 0;
1052         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1053         int ret;
1054         const uint32_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1055                                         MLX5_FLOW_LAYER_INNER_L4) :
1056                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1057                                         MLX5_FLOW_LAYER_OUTER_L4);
1058         const uint32_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1059                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1060
1061         if (item_flags & vlanm)
1062                 return rte_flow_error_set(error, EINVAL,
1063                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1064                                           "VLAN layer already configured");
1065         else if ((item_flags & l34m) != 0)
1066                 return rte_flow_error_set(error, EINVAL,
1067                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1068                                           "L2 layer cannot follow L3/L4 layer");
1069         if (!mask)
1070                 mask = &rte_flow_item_vlan_mask;
1071         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1072                                         (const uint8_t *)&nic_mask,
1073                                         sizeof(struct rte_flow_item_vlan),
1074                                         error);
1075         if (ret)
1076                 return ret;
1077         if (spec) {
1078                 vlan_tag = spec->tci;
1079                 vlan_tag &= mask->tci;
1080         }
1081         /*
1082          * From verbs perspective an empty VLAN is equivalent
1083          * to a packet without VLAN layer.
1084          */
1085         if (!vlan_tag)
1086                 return rte_flow_error_set(error, EINVAL,
1087                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1088                                           item->spec,
1089                                           "VLAN cannot be empty");
1090         return 0;
1091 }
1092
1093 /**
1094  * Validate IPV4 item.
1095  *
1096  * @param[in] item
1097  *   Item specification.
1098  * @param[in] item_flags
1099  *   Bit-fields that holds the items detected until now.
1100  * @param[out] error
1101  *   Pointer to error structure.
1102  *
1103  * @return
1104  *   0 on success, a negative errno value otherwise and rte_errno is set.
1105  */
1106 int
1107 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1108                              int64_t item_flags,
1109                              struct rte_flow_error *error)
1110 {
1111         const struct rte_flow_item_ipv4 *mask = item->mask;
1112         const struct rte_flow_item_ipv4 nic_mask = {
1113                 .hdr = {
1114                         .src_addr = RTE_BE32(0xffffffff),
1115                         .dst_addr = RTE_BE32(0xffffffff),
1116                         .type_of_service = 0xff,
1117                         .next_proto_id = 0xff,
1118                 },
1119         };
1120         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1121         int ret;
1122
1123         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1124                                    MLX5_FLOW_LAYER_OUTER_L3))
1125                 return rte_flow_error_set(error, ENOTSUP,
1126                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1127                                           "multiple L3 layers not supported");
1128         else if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1129                                         MLX5_FLOW_LAYER_OUTER_L4))
1130                 return rte_flow_error_set(error, EINVAL,
1131                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1132                                           "L3 cannot follow an L4 layer.");
1133         if (!mask)
1134                 mask = &rte_flow_item_ipv4_mask;
1135         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1136                                         (const uint8_t *)&nic_mask,
1137                                         sizeof(struct rte_flow_item_ipv4),
1138                                         error);
1139         if (ret < 0)
1140                 return ret;
1141         return 0;
1142 }
1143
1144 /**
1145  * Validate IPV6 item.
1146  *
1147  * @param[in] item
1148  *   Item specification.
1149  * @param[in] item_flags
1150  *   Bit-fields that holds the items detected until now.
1151  * @param[out] error
1152  *   Pointer to error structure.
1153  *
1154  * @return
1155  *   0 on success, a negative errno value otherwise and rte_errno is set.
1156  */
1157 int
1158 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1159                              uint64_t item_flags,
1160                              struct rte_flow_error *error)
1161 {
1162         const struct rte_flow_item_ipv6 *mask = item->mask;
1163         const struct rte_flow_item_ipv6 nic_mask = {
1164                 .hdr = {
1165                         .src_addr =
1166                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1167                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1168                         .dst_addr =
1169                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1170                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1171                         .vtc_flow = RTE_BE32(0xffffffff),
1172                         .proto = 0xff,
1173                         .hop_limits = 0xff,
1174                 },
1175         };
1176         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1177         int ret;
1178
1179         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1180                                    MLX5_FLOW_LAYER_OUTER_L3))
1181                 return rte_flow_error_set(error, ENOTSUP,
1182                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1183                                           "multiple L3 layers not supported");
1184         else if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1185                                         MLX5_FLOW_LAYER_OUTER_L4))
1186                 return rte_flow_error_set(error, EINVAL,
1187                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1188                                           "L3 cannot follow an L4 layer.");
1189         /*
1190          * IPv6 is not recognised by the NIC inside a GRE tunnel.
1191          * Such support has to be disabled as the rule will be
1192          * accepted.  Issue reproduced with Mellanox OFED 4.3-3.0.2.1 and
1193          * Mellanox OFED 4.4-1.0.0.0.
1194          */
1195         if (tunnel && item_flags & MLX5_FLOW_LAYER_GRE)
1196                 return rte_flow_error_set(error, ENOTSUP,
1197                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1198                                           "IPv6 inside a GRE tunnel is"
1199                                           " not recognised.");
1200         if (!mask)
1201                 mask = &rte_flow_item_ipv6_mask;
1202         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1203                                         (const uint8_t *)&nic_mask,
1204                                         sizeof(struct rte_flow_item_ipv6),
1205                                         error);
1206         if (ret < 0)
1207                 return ret;
1208         return 0;
1209 }
1210
1211 /**
1212  * Validate UDP item.
1213  *
1214  * @param[in] item
1215  *   Item specification.
1216  * @param[in] item_flags
1217  *   Bit-fields that holds the items detected until now.
1218  * @param[in] target_protocol
1219  *   The next protocol in the previous item.
1220  * @param[in] flow_mask
1221  *   mlx5 flow-specific (TCF, DV, verbs, etc.) supported header fields mask.
1222  * @param[out] error
1223  *   Pointer to error structure.
1224  *
1225  * @return
1226  *   0 on success, a negative errno value otherwise and rte_errno is set.
1227  */
1228 int
1229 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1230                             uint64_t item_flags,
1231                             uint8_t target_protocol,
1232                             struct rte_flow_error *error)
1233 {
1234         const struct rte_flow_item_udp *mask = item->mask;
1235         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1236         int ret;
1237
1238         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1239                 return rte_flow_error_set(error, EINVAL,
1240                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1241                                           "protocol filtering not compatible"
1242                                           " with UDP layer");
1243         if (!(item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1244                                      MLX5_FLOW_LAYER_OUTER_L3)))
1245                 return rte_flow_error_set(error, EINVAL,
1246                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1247                                           "L3 is mandatory to filter on L4");
1248         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1249                                    MLX5_FLOW_LAYER_OUTER_L4))
1250                 return rte_flow_error_set(error, EINVAL,
1251                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1252                                           "L4 layer is already present");
1253         if (!mask)
1254                 mask = &rte_flow_item_udp_mask;
1255         ret = mlx5_flow_item_acceptable
1256                 (item, (const uint8_t *)mask,
1257                  (const uint8_t *)&rte_flow_item_udp_mask,
1258                  sizeof(struct rte_flow_item_udp), error);
1259         if (ret < 0)
1260                 return ret;
1261         return 0;
1262 }
1263
1264 /**
1265  * Validate TCP item.
1266  *
1267  * @param[in] item
1268  *   Item specification.
1269  * @param[in] item_flags
1270  *   Bit-fields that holds the items detected until now.
1271  * @param[in] target_protocol
1272  *   The next protocol in the previous item.
1273  * @param[out] error
1274  *   Pointer to error structure.
1275  *
1276  * @return
1277  *   0 on success, a negative errno value otherwise and rte_errno is set.
1278  */
1279 int
1280 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1281                             uint64_t item_flags,
1282                             uint8_t target_protocol,
1283                             const struct rte_flow_item_tcp *flow_mask,
1284                             struct rte_flow_error *error)
1285 {
1286         const struct rte_flow_item_tcp *mask = item->mask;
1287         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1288         int ret;
1289
1290         assert(flow_mask);
1291         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1292                 return rte_flow_error_set(error, EINVAL,
1293                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1294                                           "protocol filtering not compatible"
1295                                           " with TCP layer");
1296         if (!(item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1297                                      MLX5_FLOW_LAYER_OUTER_L3)))
1298                 return rte_flow_error_set(error, EINVAL,
1299                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1300                                           "L3 is mandatory to filter on L4");
1301         if (item_flags & (tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1302                                    MLX5_FLOW_LAYER_OUTER_L4))
1303                 return rte_flow_error_set(error, EINVAL,
1304                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1305                                           "L4 layer is already present");
1306         if (!mask)
1307                 mask = &rte_flow_item_tcp_mask;
1308         ret = mlx5_flow_item_acceptable
1309                 (item, (const uint8_t *)mask,
1310                  (const uint8_t *)flow_mask,
1311                  sizeof(struct rte_flow_item_tcp), error);
1312         if (ret < 0)
1313                 return ret;
1314         return 0;
1315 }
1316
1317 /**
1318  * Validate VXLAN item.
1319  *
1320  * @param[in] item
1321  *   Item specification.
1322  * @param[in] item_flags
1323  *   Bit-fields that holds the items detected until now.
1324  * @param[in] target_protocol
1325  *   The next protocol in the previous item.
1326  * @param[out] error
1327  *   Pointer to error structure.
1328  *
1329  * @return
1330  *   0 on success, a negative errno value otherwise and rte_errno is set.
1331  */
1332 int
1333 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1334                               uint64_t item_flags,
1335                               struct rte_flow_error *error)
1336 {
1337         const struct rte_flow_item_vxlan *spec = item->spec;
1338         const struct rte_flow_item_vxlan *mask = item->mask;
1339         int ret;
1340         union vni {
1341                 uint32_t vlan_id;
1342                 uint8_t vni[4];
1343         } id = { .vlan_id = 0, };
1344         uint32_t vlan_id = 0;
1345
1346
1347         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1348                 return rte_flow_error_set(error, ENOTSUP,
1349                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1350                                           "a tunnel is already present");
1351         /*
1352          * Verify only UDPv4 is present as defined in
1353          * https://tools.ietf.org/html/rfc7348
1354          */
1355         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1356                 return rte_flow_error_set(error, EINVAL,
1357                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1358                                           "no outer UDP layer found");
1359         if (!mask)
1360                 mask = &rte_flow_item_vxlan_mask;
1361         ret = mlx5_flow_item_acceptable
1362                 (item, (const uint8_t *)mask,
1363                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1364                  sizeof(struct rte_flow_item_vxlan),
1365                  error);
1366         if (ret < 0)
1367                 return ret;
1368         if (spec) {
1369                 memcpy(&id.vni[1], spec->vni, 3);
1370                 vlan_id = id.vlan_id;
1371                 memcpy(&id.vni[1], mask->vni, 3);
1372                 vlan_id &= id.vlan_id;
1373         }
1374         /*
1375          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1376          * only this layer is defined in the Verbs specification it is
1377          * interpreted as wildcard and all packets will match this
1378          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1379          * udp), all packets matching the layers before will also
1380          * match this rule.  To avoid such situation, VNI 0 is
1381          * currently refused.
1382          */
1383         if (!vlan_id)
1384                 return rte_flow_error_set(error, ENOTSUP,
1385                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1386                                           "VXLAN vni cannot be 0");
1387         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1388                 return rte_flow_error_set(error, ENOTSUP,
1389                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1390                                           "VXLAN tunnel must be fully defined");
1391         return 0;
1392 }
1393
1394 /**
1395  * Validate VXLAN_GPE item.
1396  *
1397  * @param[in] item
1398  *   Item specification.
1399  * @param[in] item_flags
1400  *   Bit-fields that holds the items detected until now.
1401  * @param[in] priv
1402  *   Pointer to the private data structure.
1403  * @param[in] target_protocol
1404  *   The next protocol in the previous item.
1405  * @param[out] error
1406  *   Pointer to error structure.
1407  *
1408  * @return
1409  *   0 on success, a negative errno value otherwise and rte_errno is set.
1410  */
1411 int
1412 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1413                                   uint64_t item_flags,
1414                                   struct rte_eth_dev *dev,
1415                                   struct rte_flow_error *error)
1416 {
1417         struct priv *priv = dev->data->dev_private;
1418         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1419         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1420         int ret;
1421         union vni {
1422                 uint32_t vlan_id;
1423                 uint8_t vni[4];
1424         } id = { .vlan_id = 0, };
1425         uint32_t vlan_id = 0;
1426
1427         if (!priv->config.l3_vxlan_en)
1428                 return rte_flow_error_set(error, ENOTSUP,
1429                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1430                                           "L3 VXLAN is not enabled by device"
1431                                           " parameter and/or not configured in"
1432                                           " firmware");
1433         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1434                 return rte_flow_error_set(error, ENOTSUP,
1435                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1436                                           "a tunnel is already present");
1437         /*
1438          * Verify only UDPv4 is present as defined in
1439          * https://tools.ietf.org/html/rfc7348
1440          */
1441         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1442                 return rte_flow_error_set(error, EINVAL,
1443                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1444                                           "no outer UDP layer found");
1445         if (!mask)
1446                 mask = &rte_flow_item_vxlan_gpe_mask;
1447         ret = mlx5_flow_item_acceptable
1448                 (item, (const uint8_t *)mask,
1449                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1450                  sizeof(struct rte_flow_item_vxlan_gpe),
1451                  error);
1452         if (ret < 0)
1453                 return ret;
1454         if (spec) {
1455                 if (spec->protocol)
1456                         return rte_flow_error_set(error, ENOTSUP,
1457                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1458                                                   item,
1459                                                   "VxLAN-GPE protocol"
1460                                                   " not supported");
1461                 memcpy(&id.vni[1], spec->vni, 3);
1462                 vlan_id = id.vlan_id;
1463                 memcpy(&id.vni[1], mask->vni, 3);
1464                 vlan_id &= id.vlan_id;
1465         }
1466         /*
1467          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1468          * layer is defined in the Verbs specification it is interpreted as
1469          * wildcard and all packets will match this rule, if it follows a full
1470          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1471          * before will also match this rule.  To avoid such situation, VNI 0
1472          * is currently refused.
1473          */
1474         if (!vlan_id)
1475                 return rte_flow_error_set(error, ENOTSUP,
1476                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1477                                           "VXLAN-GPE vni cannot be 0");
1478         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1479                 return rte_flow_error_set(error, ENOTSUP,
1480                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1481                                           "VXLAN-GPE tunnel must be fully"
1482                                           " defined");
1483         return 0;
1484 }
1485
1486 /**
1487  * Validate GRE item.
1488  *
1489  * @param[in] item
1490  *   Item specification.
1491  * @param[in] item_flags
1492  *   Bit flags to mark detected items.
1493  * @param[in] target_protocol
1494  *   The next protocol in the previous item.
1495  * @param[out] error
1496  *   Pointer to error structure.
1497  *
1498  * @return
1499  *   0 on success, a negative errno value otherwise and rte_errno is set.
1500  */
1501 int
1502 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
1503                             uint64_t item_flags,
1504                             uint8_t target_protocol,
1505                             struct rte_flow_error *error)
1506 {
1507         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
1508         const struct rte_flow_item_gre *mask = item->mask;
1509         int ret;
1510
1511         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
1512                 return rte_flow_error_set(error, EINVAL,
1513                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1514                                           "protocol filtering not compatible"
1515                                           " with this GRE layer");
1516         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1517                 return rte_flow_error_set(error, ENOTSUP,
1518                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1519                                           "a tunnel is already present");
1520         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
1521                 return rte_flow_error_set(error, ENOTSUP,
1522                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1523                                           "L3 Layer is missing");
1524         if (!mask)
1525                 mask = &rte_flow_item_gre_mask;
1526         ret = mlx5_flow_item_acceptable
1527                 (item, (const uint8_t *)mask,
1528                  (const uint8_t *)&rte_flow_item_gre_mask,
1529                  sizeof(struct rte_flow_item_gre), error);
1530         if (ret < 0)
1531                 return ret;
1532 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
1533         if (spec && (spec->protocol & mask->protocol))
1534                 return rte_flow_error_set(error, ENOTSUP,
1535                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1536                                           "without MPLS support the"
1537                                           " specification cannot be used for"
1538                                           " filtering");
1539 #endif
1540         return 0;
1541 }
1542
1543 /**
1544  * Validate MPLS item.
1545  *
1546  * @param[in] item
1547  *   Item specification.
1548  * @param[in] item_flags
1549  *   Bit-fields that holds the items detected until now.
1550  * @param[in] target_protocol
1551  *   The next protocol in the previous item.
1552  * @param[out] error
1553  *   Pointer to error structure.
1554  *
1555  * @return
1556  *   0 on success, a negative errno value otherwise and rte_errno is set.
1557  */
1558 int
1559 mlx5_flow_validate_item_mpls(const struct rte_flow_item *item __rte_unused,
1560                              uint64_t item_flags __rte_unused,
1561                              uint8_t target_protocol __rte_unused,
1562                              struct rte_flow_error *error)
1563 {
1564 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
1565         const struct rte_flow_item_mpls *mask = item->mask;
1566         int ret;
1567
1568         if (target_protocol != 0xff && target_protocol != IPPROTO_MPLS)
1569                 return rte_flow_error_set(error, EINVAL,
1570                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1571                                           "protocol filtering not compatible"
1572                                           " with MPLS layer");
1573         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1574                 return rte_flow_error_set(error, ENOTSUP,
1575                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1576                                           "a tunnel is already"
1577                                           " present");
1578         if (!mask)
1579                 mask = &rte_flow_item_mpls_mask;
1580         ret = mlx5_flow_item_acceptable
1581                 (item, (const uint8_t *)mask,
1582                  (const uint8_t *)&rte_flow_item_mpls_mask,
1583                  sizeof(struct rte_flow_item_mpls), error);
1584         if (ret < 0)
1585                 return ret;
1586         return 0;
1587 #endif
1588         return rte_flow_error_set(error, ENOTSUP,
1589                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
1590                                   "MPLS is not supported by Verbs, please"
1591                                   " update.");
1592 }
1593
1594 static int
1595 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
1596                    const struct rte_flow_attr *attr __rte_unused,
1597                    const struct rte_flow_item items[] __rte_unused,
1598                    const struct rte_flow_action actions[] __rte_unused,
1599                    struct rte_flow_error *error __rte_unused)
1600 {
1601         rte_errno = ENOTSUP;
1602         return -rte_errno;
1603 }
1604
1605 static struct mlx5_flow *
1606 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
1607                   const struct rte_flow_item items[] __rte_unused,
1608                   const struct rte_flow_action actions[] __rte_unused,
1609                   uint64_t *item_flags __rte_unused,
1610                   uint64_t *action_flags __rte_unused,
1611                   struct rte_flow_error *error __rte_unused)
1612 {
1613         rte_errno = ENOTSUP;
1614         return NULL;
1615 }
1616
1617 static int
1618 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
1619                     struct mlx5_flow *dev_flow __rte_unused,
1620                     const struct rte_flow_attr *attr __rte_unused,
1621                     const struct rte_flow_item items[] __rte_unused,
1622                     const struct rte_flow_action actions[] __rte_unused,
1623                     struct rte_flow_error *error __rte_unused)
1624 {
1625         rte_errno = ENOTSUP;
1626         return -rte_errno;
1627 }
1628
1629 static int
1630 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
1631                 struct rte_flow *flow __rte_unused,
1632                 struct rte_flow_error *error __rte_unused)
1633 {
1634         rte_errno = ENOTSUP;
1635         return -rte_errno;
1636 }
1637
1638 static void
1639 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
1640                  struct rte_flow *flow __rte_unused)
1641 {
1642 }
1643
1644 static void
1645 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
1646                   struct rte_flow *flow __rte_unused)
1647 {
1648 }
1649
1650 static int
1651 flow_null_query(struct rte_eth_dev *dev __rte_unused,
1652                 struct rte_flow *flow __rte_unused,
1653                 const struct rte_flow_action *actions __rte_unused,
1654                 void *data __rte_unused,
1655                 struct rte_flow_error *error __rte_unused)
1656 {
1657         rte_errno = ENOTSUP;
1658         return -rte_errno;
1659 }
1660
1661 /* Void driver to protect from null pointer reference. */
1662 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
1663         .validate = flow_null_validate,
1664         .prepare = flow_null_prepare,
1665         .translate = flow_null_translate,
1666         .apply = flow_null_apply,
1667         .remove = flow_null_remove,
1668         .destroy = flow_null_destroy,
1669         .query = flow_null_query,
1670 };
1671
1672 /**
1673  * Select flow driver type according to flow attributes and device
1674  * configuration.
1675  *
1676  * @param[in] dev
1677  *   Pointer to the dev structure.
1678  * @param[in] attr
1679  *   Pointer to the flow attributes.
1680  *
1681  * @return
1682  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
1683  */
1684 static enum mlx5_flow_drv_type
1685 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
1686 {
1687         struct priv *priv = dev->data->dev_private;
1688         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
1689
1690         if (attr->transfer)
1691                 type = MLX5_FLOW_TYPE_TCF;
1692         else
1693                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
1694                                                  MLX5_FLOW_TYPE_VERBS;
1695         return type;
1696 }
1697
1698 #define flow_get_drv_ops(type) flow_drv_ops[type]
1699
1700 /**
1701  * Flow driver validation API. This abstracts calling driver specific functions.
1702  * The type of flow driver is determined according to flow attributes.
1703  *
1704  * @param[in] dev
1705  *   Pointer to the dev structure.
1706  * @param[in] attr
1707  *   Pointer to the flow attributes.
1708  * @param[in] items
1709  *   Pointer to the list of items.
1710  * @param[in] actions
1711  *   Pointer to the list of actions.
1712  * @param[out] error
1713  *   Pointer to the error structure.
1714  *
1715  * @return
1716  *   0 on success, a negative errno value otherwise and rte_ernno is set.
1717  */
1718 static inline int
1719 flow_drv_validate(struct rte_eth_dev *dev,
1720                   const struct rte_flow_attr *attr,
1721                   const struct rte_flow_item items[],
1722                   const struct rte_flow_action actions[],
1723                   struct rte_flow_error *error)
1724 {
1725         const struct mlx5_flow_driver_ops *fops;
1726         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
1727
1728         fops = flow_get_drv_ops(type);
1729         return fops->validate(dev, attr, items, actions, error);
1730 }
1731
1732 /**
1733  * Flow driver preparation API. This abstracts calling driver specific
1734  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1735  * calculates the size of memory required for device flow, allocates the memory,
1736  * initializes the device flow and returns the pointer.
1737  *
1738  * @param[in] attr
1739  *   Pointer to the flow attributes.
1740  * @param[in] items
1741  *   Pointer to the list of items.
1742  * @param[in] actions
1743  *   Pointer to the list of actions.
1744  * @param[out] item_flags
1745  *   Pointer to bit mask of all items detected.
1746  * @param[out] action_flags
1747  *   Pointer to bit mask of all actions detected.
1748  * @param[out] error
1749  *   Pointer to the error structure.
1750  *
1751  * @return
1752  *   Pointer to device flow on success, otherwise NULL and rte_ernno is set.
1753  */
1754 static inline struct mlx5_flow *
1755 flow_drv_prepare(struct rte_flow *flow,
1756                  const struct rte_flow_attr *attr,
1757                  const struct rte_flow_item items[],
1758                  const struct rte_flow_action actions[],
1759                  uint64_t *item_flags,
1760                  uint64_t *action_flags,
1761                  struct rte_flow_error *error)
1762 {
1763         const struct mlx5_flow_driver_ops *fops;
1764         enum mlx5_flow_drv_type type = flow->drv_type;
1765
1766         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1767         fops = flow_get_drv_ops(type);
1768         return fops->prepare(attr, items, actions, item_flags, action_flags,
1769                              error);
1770 }
1771
1772 /**
1773  * Flow driver translation API. This abstracts calling driver specific
1774  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
1775  * translates a generic flow into a driver flow. flow_drv_prepare() must
1776  * precede.
1777  *
1778  *
1779  * @param[in] dev
1780  *   Pointer to the rte dev structure.
1781  * @param[in, out] dev_flow
1782  *   Pointer to the mlx5 flow.
1783  * @param[in] attr
1784  *   Pointer to the flow attributes.
1785  * @param[in] items
1786  *   Pointer to the list of items.
1787  * @param[in] actions
1788  *   Pointer to the list of actions.
1789  * @param[out] error
1790  *   Pointer to the error structure.
1791  *
1792  * @return
1793  *   0 on success, a negative errno value otherwise and rte_ernno is set.
1794  */
1795 static inline int
1796 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
1797                    const struct rte_flow_attr *attr,
1798                    const struct rte_flow_item items[],
1799                    const struct rte_flow_action actions[],
1800                    struct rte_flow_error *error)
1801 {
1802         const struct mlx5_flow_driver_ops *fops;
1803         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
1804
1805         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1806         fops = flow_get_drv_ops(type);
1807         return fops->translate(dev, dev_flow, attr, items, actions, error);
1808 }
1809
1810 /**
1811  * Flow driver apply API. This abstracts calling driver specific functions.
1812  * Parent flow (rte_flow) should have driver type (drv_type). It applies
1813  * translated driver flows on to device. flow_drv_translate() must precede.
1814  *
1815  * @param[in] dev
1816  *   Pointer to Ethernet device structure.
1817  * @param[in, out] flow
1818  *   Pointer to flow structure.
1819  * @param[out] error
1820  *   Pointer to error structure.
1821  *
1822  * @return
1823  *   0 on success, a negative errno value otherwise and rte_errno is set.
1824  */
1825 static inline int
1826 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
1827                struct rte_flow_error *error)
1828 {
1829         const struct mlx5_flow_driver_ops *fops;
1830         enum mlx5_flow_drv_type type = flow->drv_type;
1831
1832         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1833         fops = flow_get_drv_ops(type);
1834         return fops->apply(dev, flow, error);
1835 }
1836
1837 /**
1838  * Flow driver remove API. This abstracts calling driver specific functions.
1839  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1840  * on device. All the resources of the flow should be freed by calling
1841  * flow_dv_destroy().
1842  *
1843  * @param[in] dev
1844  *   Pointer to Ethernet device.
1845  * @param[in, out] flow
1846  *   Pointer to flow structure.
1847  */
1848 static inline void
1849 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
1850 {
1851         const struct mlx5_flow_driver_ops *fops;
1852         enum mlx5_flow_drv_type type = flow->drv_type;
1853
1854         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1855         fops = flow_get_drv_ops(type);
1856         fops->remove(dev, flow);
1857 }
1858
1859 /**
1860  * Flow driver destroy API. This abstracts calling driver specific functions.
1861  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
1862  * on device and releases resources of the flow.
1863  *
1864  * @param[in] dev
1865  *   Pointer to Ethernet device.
1866  * @param[in, out] flow
1867  *   Pointer to flow structure.
1868  */
1869 static inline void
1870 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
1871 {
1872         const struct mlx5_flow_driver_ops *fops;
1873         enum mlx5_flow_drv_type type = flow->drv_type;
1874
1875         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
1876         fops = flow_get_drv_ops(type);
1877         fops->destroy(dev, flow);
1878 }
1879
1880 /**
1881  * Validate a flow supported by the NIC.
1882  *
1883  * @see rte_flow_validate()
1884  * @see rte_flow_ops
1885  */
1886 int
1887 mlx5_flow_validate(struct rte_eth_dev *dev,
1888                    const struct rte_flow_attr *attr,
1889                    const struct rte_flow_item items[],
1890                    const struct rte_flow_action actions[],
1891                    struct rte_flow_error *error)
1892 {
1893         int ret;
1894
1895         ret = flow_drv_validate(dev, attr, items, actions, error);
1896         if (ret < 0)
1897                 return ret;
1898         return 0;
1899 }
1900
1901 /**
1902  * Get RSS action from the action list.
1903  *
1904  * @param[in] actions
1905  *   Pointer to the list of actions.
1906  *
1907  * @return
1908  *   Pointer to the RSS action if exist, else return NULL.
1909  */
1910 static const struct rte_flow_action_rss*
1911 flow_get_rss_action(const struct rte_flow_action actions[])
1912 {
1913         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
1914                 switch (actions->type) {
1915                 case RTE_FLOW_ACTION_TYPE_RSS:
1916                         return (const struct rte_flow_action_rss *)
1917                                actions->conf;
1918                 default:
1919                         break;
1920                 }
1921         }
1922         return NULL;
1923 }
1924
1925 static unsigned int
1926 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
1927 {
1928         const struct rte_flow_item *item;
1929         unsigned int has_vlan = 0;
1930
1931         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
1932                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
1933                         has_vlan = 1;
1934                         break;
1935                 }
1936         }
1937         if (has_vlan)
1938                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
1939                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
1940         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
1941                                MLX5_EXPANSION_ROOT_OUTER;
1942 }
1943
1944 /**
1945  * Create a flow and add it to @p list.
1946  *
1947  * @param dev
1948  *   Pointer to Ethernet device.
1949  * @param list
1950  *   Pointer to a TAILQ flow list.
1951  * @param[in] attr
1952  *   Flow rule attributes.
1953  * @param[in] items
1954  *   Pattern specification (list terminated by the END pattern item).
1955  * @param[in] actions
1956  *   Associated actions (list terminated by the END action).
1957  * @param[out] error
1958  *   Perform verbose error reporting if not NULL.
1959  *
1960  * @return
1961  *   A flow on success, NULL otherwise and rte_errno is set.
1962  */
1963 static struct rte_flow *
1964 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
1965                  const struct rte_flow_attr *attr,
1966                  const struct rte_flow_item items[],
1967                  const struct rte_flow_action actions[],
1968                  struct rte_flow_error *error)
1969 {
1970         struct rte_flow *flow = NULL;
1971         struct mlx5_flow *dev_flow;
1972         uint64_t action_flags = 0;
1973         uint64_t item_flags = 0;
1974         const struct rte_flow_action_rss *rss;
1975         union {
1976                 struct rte_flow_expand_rss buf;
1977                 uint8_t buffer[2048];
1978         } expand_buffer;
1979         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
1980         int ret;
1981         uint32_t i;
1982         uint32_t flow_size;
1983
1984         ret = flow_drv_validate(dev, attr, items, actions, error);
1985         if (ret < 0)
1986                 return NULL;
1987         flow_size = sizeof(struct rte_flow);
1988         rss = flow_get_rss_action(actions);
1989         if (rss)
1990                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
1991                                             sizeof(void *));
1992         else
1993                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
1994         flow = rte_calloc(__func__, 1, flow_size, 0);
1995         flow->drv_type = flow_get_drv_type(dev, attr);
1996         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
1997                flow->drv_type < MLX5_FLOW_TYPE_MAX);
1998         flow->queue = (void *)(flow + 1);
1999         LIST_INIT(&flow->dev_flows);
2000         if (rss && rss->types) {
2001                 unsigned int graph_root;
2002
2003                 graph_root = find_graph_root(items, rss->level);
2004                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
2005                                           items, rss->types,
2006                                           mlx5_support_expansion,
2007                                           graph_root);
2008                 assert(ret > 0 &&
2009                        (unsigned int)ret < sizeof(expand_buffer.buffer));
2010         } else {
2011                 buf->entries = 1;
2012                 buf->entry[0].pattern = (void *)(uintptr_t)items;
2013         }
2014         for (i = 0; i < buf->entries; ++i) {
2015                 dev_flow = flow_drv_prepare(flow, attr, buf->entry[i].pattern,
2016                                             actions, &item_flags, &action_flags,
2017                                             error);
2018                 if (!dev_flow)
2019                         goto error;
2020                 dev_flow->flow = flow;
2021                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
2022                 ret = flow_drv_translate(dev, dev_flow, attr,
2023                                          buf->entry[i].pattern,
2024                                          actions, error);
2025                 if (ret < 0)
2026                         goto error;
2027         }
2028         if (dev->data->dev_started) {
2029                 ret = flow_drv_apply(dev, flow, error);
2030                 if (ret < 0)
2031                         goto error;
2032         }
2033         TAILQ_INSERT_TAIL(list, flow, next);
2034         flow_rxq_flags_set(dev, flow);
2035         return flow;
2036 error:
2037         ret = rte_errno; /* Save rte_errno before cleanup. */
2038         assert(flow);
2039         flow_drv_destroy(dev, flow);
2040         rte_free(flow);
2041         rte_errno = ret; /* Restore rte_errno. */
2042         return NULL;
2043 }
2044
2045 /**
2046  * Create a flow.
2047  *
2048  * @see rte_flow_create()
2049  * @see rte_flow_ops
2050  */
2051 struct rte_flow *
2052 mlx5_flow_create(struct rte_eth_dev *dev,
2053                  const struct rte_flow_attr *attr,
2054                  const struct rte_flow_item items[],
2055                  const struct rte_flow_action actions[],
2056                  struct rte_flow_error *error)
2057 {
2058         return flow_list_create(dev,
2059                                 &((struct priv *)dev->data->dev_private)->flows,
2060                                 attr, items, actions, error);
2061 }
2062
2063 /**
2064  * Destroy a flow in a list.
2065  *
2066  * @param dev
2067  *   Pointer to Ethernet device.
2068  * @param list
2069  *   Pointer to a TAILQ flow list.
2070  * @param[in] flow
2071  *   Flow to destroy.
2072  */
2073 static void
2074 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2075                   struct rte_flow *flow)
2076 {
2077         flow_drv_destroy(dev, flow);
2078         TAILQ_REMOVE(list, flow, next);
2079         /*
2080          * Update RX queue flags only if port is started, otherwise it is
2081          * already clean.
2082          */
2083         if (dev->data->dev_started)
2084                 flow_rxq_flags_trim(dev, flow);
2085         rte_free(flow);
2086 }
2087
2088 /**
2089  * Destroy all flows.
2090  *
2091  * @param dev
2092  *   Pointer to Ethernet device.
2093  * @param list
2094  *   Pointer to a TAILQ flow list.
2095  */
2096 void
2097 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
2098 {
2099         while (!TAILQ_EMPTY(list)) {
2100                 struct rte_flow *flow;
2101
2102                 flow = TAILQ_FIRST(list);
2103                 flow_list_destroy(dev, list, flow);
2104         }
2105 }
2106
2107 /**
2108  * Remove all flows.
2109  *
2110  * @param dev
2111  *   Pointer to Ethernet device.
2112  * @param list
2113  *   Pointer to a TAILQ flow list.
2114  */
2115 void
2116 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
2117 {
2118         struct rte_flow *flow;
2119
2120         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
2121                 flow_drv_remove(dev, flow);
2122         flow_rxq_flags_clear(dev);
2123 }
2124
2125 /**
2126  * Add all flows.
2127  *
2128  * @param dev
2129  *   Pointer to Ethernet device.
2130  * @param list
2131  *   Pointer to a TAILQ flow list.
2132  *
2133  * @return
2134  *   0 on success, a negative errno value otherwise and rte_errno is set.
2135  */
2136 int
2137 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
2138 {
2139         struct rte_flow *flow;
2140         struct rte_flow_error error;
2141         int ret = 0;
2142
2143         TAILQ_FOREACH(flow, list, next) {
2144                 ret = flow_drv_apply(dev, flow, &error);
2145                 if (ret < 0)
2146                         goto error;
2147                 flow_rxq_flags_set(dev, flow);
2148         }
2149         return 0;
2150 error:
2151         ret = rte_errno; /* Save rte_errno before cleanup. */
2152         mlx5_flow_stop(dev, list);
2153         rte_errno = ret; /* Restore rte_errno. */
2154         return -rte_errno;
2155 }
2156
2157 /**
2158  * Verify the flow list is empty
2159  *
2160  * @param dev
2161  *  Pointer to Ethernet device.
2162  *
2163  * @return the number of flows not released.
2164  */
2165 int
2166 mlx5_flow_verify(struct rte_eth_dev *dev)
2167 {
2168         struct priv *priv = dev->data->dev_private;
2169         struct rte_flow *flow;
2170         int ret = 0;
2171
2172         TAILQ_FOREACH(flow, &priv->flows, next) {
2173                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
2174                         dev->data->port_id, (void *)flow);
2175                 ++ret;
2176         }
2177         return ret;
2178 }
2179
2180 /**
2181  * Enable a control flow configured from the control plane.
2182  *
2183  * @param dev
2184  *   Pointer to Ethernet device.
2185  * @param eth_spec
2186  *   An Ethernet flow spec to apply.
2187  * @param eth_mask
2188  *   An Ethernet flow mask to apply.
2189  * @param vlan_spec
2190  *   A VLAN flow spec to apply.
2191  * @param vlan_mask
2192  *   A VLAN flow mask to apply.
2193  *
2194  * @return
2195  *   0 on success, a negative errno value otherwise and rte_errno is set.
2196  */
2197 int
2198 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
2199                     struct rte_flow_item_eth *eth_spec,
2200                     struct rte_flow_item_eth *eth_mask,
2201                     struct rte_flow_item_vlan *vlan_spec,
2202                     struct rte_flow_item_vlan *vlan_mask)
2203 {
2204         struct priv *priv = dev->data->dev_private;
2205         const struct rte_flow_attr attr = {
2206                 .ingress = 1,
2207                 .priority = MLX5_FLOW_PRIO_RSVD,
2208         };
2209         struct rte_flow_item items[] = {
2210                 {
2211                         .type = RTE_FLOW_ITEM_TYPE_ETH,
2212                         .spec = eth_spec,
2213                         .last = NULL,
2214                         .mask = eth_mask,
2215                 },
2216                 {
2217                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
2218                                               RTE_FLOW_ITEM_TYPE_END,
2219                         .spec = vlan_spec,
2220                         .last = NULL,
2221                         .mask = vlan_mask,
2222                 },
2223                 {
2224                         .type = RTE_FLOW_ITEM_TYPE_END,
2225                 },
2226         };
2227         uint16_t queue[priv->reta_idx_n];
2228         struct rte_flow_action_rss action_rss = {
2229                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
2230                 .level = 0,
2231                 .types = priv->rss_conf.rss_hf,
2232                 .key_len = priv->rss_conf.rss_key_len,
2233                 .queue_num = priv->reta_idx_n,
2234                 .key = priv->rss_conf.rss_key,
2235                 .queue = queue,
2236         };
2237         struct rte_flow_action actions[] = {
2238                 {
2239                         .type = RTE_FLOW_ACTION_TYPE_RSS,
2240                         .conf = &action_rss,
2241                 },
2242                 {
2243                         .type = RTE_FLOW_ACTION_TYPE_END,
2244                 },
2245         };
2246         struct rte_flow *flow;
2247         struct rte_flow_error error;
2248         unsigned int i;
2249
2250         if (!priv->reta_idx_n) {
2251                 rte_errno = EINVAL;
2252                 return -rte_errno;
2253         }
2254         for (i = 0; i != priv->reta_idx_n; ++i)
2255                 queue[i] = (*priv->reta_idx)[i];
2256         flow = flow_list_create(dev, &priv->ctrl_flows,
2257                                 &attr, items, actions, &error);
2258         if (!flow)
2259                 return -rte_errno;
2260         return 0;
2261 }
2262
2263 /**
2264  * Enable a flow control configured from the control plane.
2265  *
2266  * @param dev
2267  *   Pointer to Ethernet device.
2268  * @param eth_spec
2269  *   An Ethernet flow spec to apply.
2270  * @param eth_mask
2271  *   An Ethernet flow mask to apply.
2272  *
2273  * @return
2274  *   0 on success, a negative errno value otherwise and rte_errno is set.
2275  */
2276 int
2277 mlx5_ctrl_flow(struct rte_eth_dev *dev,
2278                struct rte_flow_item_eth *eth_spec,
2279                struct rte_flow_item_eth *eth_mask)
2280 {
2281         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
2282 }
2283
2284 /**
2285  * Destroy a flow.
2286  *
2287  * @see rte_flow_destroy()
2288  * @see rte_flow_ops
2289  */
2290 int
2291 mlx5_flow_destroy(struct rte_eth_dev *dev,
2292                   struct rte_flow *flow,
2293                   struct rte_flow_error *error __rte_unused)
2294 {
2295         struct priv *priv = dev->data->dev_private;
2296
2297         flow_list_destroy(dev, &priv->flows, flow);
2298         return 0;
2299 }
2300
2301 /**
2302  * Destroy all flows.
2303  *
2304  * @see rte_flow_flush()
2305  * @see rte_flow_ops
2306  */
2307 int
2308 mlx5_flow_flush(struct rte_eth_dev *dev,
2309                 struct rte_flow_error *error __rte_unused)
2310 {
2311         struct priv *priv = dev->data->dev_private;
2312
2313         mlx5_flow_list_flush(dev, &priv->flows);
2314         return 0;
2315 }
2316
2317 /**
2318  * Isolated mode.
2319  *
2320  * @see rte_flow_isolate()
2321  * @see rte_flow_ops
2322  */
2323 int
2324 mlx5_flow_isolate(struct rte_eth_dev *dev,
2325                   int enable,
2326                   struct rte_flow_error *error)
2327 {
2328         struct priv *priv = dev->data->dev_private;
2329
2330         if (dev->data->dev_started) {
2331                 rte_flow_error_set(error, EBUSY,
2332                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
2333                                    NULL,
2334                                    "port must be stopped first");
2335                 return -rte_errno;
2336         }
2337         priv->isolated = !!enable;
2338         if (enable)
2339                 dev->dev_ops = &mlx5_dev_ops_isolate;
2340         else
2341                 dev->dev_ops = &mlx5_dev_ops;
2342         return 0;
2343 }
2344
2345 /**
2346  * Query a flow.
2347  *
2348  * @see rte_flow_query()
2349  * @see rte_flow_ops
2350  */
2351 static int
2352 flow_drv_query(struct rte_eth_dev *dev,
2353                struct rte_flow *flow,
2354                const struct rte_flow_action *actions,
2355                void *data,
2356                struct rte_flow_error *error)
2357 {
2358         const struct mlx5_flow_driver_ops *fops;
2359         enum mlx5_flow_drv_type ftype = flow->drv_type;
2360
2361         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
2362         fops = flow_get_drv_ops(ftype);
2363
2364         return fops->query(dev, flow, actions, data, error);
2365 }
2366
2367 /**
2368  * Query a flow.
2369  *
2370  * @see rte_flow_query()
2371  * @see rte_flow_ops
2372  */
2373 int
2374 mlx5_flow_query(struct rte_eth_dev *dev,
2375                 struct rte_flow *flow,
2376                 const struct rte_flow_action *actions,
2377                 void *data,
2378                 struct rte_flow_error *error)
2379 {
2380         int ret;
2381
2382         ret = flow_drv_query(dev, flow, actions, data, error);
2383         if (ret < 0)
2384                 return ret;
2385         return 0;
2386 }
2387
2388 /**
2389  * Convert a flow director filter to a generic flow.
2390  *
2391  * @param dev
2392  *   Pointer to Ethernet device.
2393  * @param fdir_filter
2394  *   Flow director filter to add.
2395  * @param attributes
2396  *   Generic flow parameters structure.
2397  *
2398  * @return
2399  *   0 on success, a negative errno value otherwise and rte_errno is set.
2400  */
2401 static int
2402 mlx5_fdir_filter_convert(struct rte_eth_dev *dev,
2403                          const struct rte_eth_fdir_filter *fdir_filter,
2404                          struct mlx5_fdir *attributes)
2405 {
2406         struct priv *priv = dev->data->dev_private;
2407         const struct rte_eth_fdir_input *input = &fdir_filter->input;
2408         const struct rte_eth_fdir_masks *mask =
2409                 &dev->data->dev_conf.fdir_conf.mask;
2410
2411         /* Validate queue number. */
2412         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
2413                 DRV_LOG(ERR, "port %u invalid queue number %d",
2414                         dev->data->port_id, fdir_filter->action.rx_queue);
2415                 rte_errno = EINVAL;
2416                 return -rte_errno;
2417         }
2418         attributes->attr.ingress = 1;
2419         attributes->items[0] = (struct rte_flow_item) {
2420                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2421                 .spec = &attributes->l2,
2422                 .mask = &attributes->l2_mask,
2423         };
2424         switch (fdir_filter->action.behavior) {
2425         case RTE_ETH_FDIR_ACCEPT:
2426                 attributes->actions[0] = (struct rte_flow_action){
2427                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
2428                         .conf = &attributes->queue,
2429                 };
2430                 break;
2431         case RTE_ETH_FDIR_REJECT:
2432                 attributes->actions[0] = (struct rte_flow_action){
2433                         .type = RTE_FLOW_ACTION_TYPE_DROP,
2434                 };
2435                 break;
2436         default:
2437                 DRV_LOG(ERR, "port %u invalid behavior %d",
2438                         dev->data->port_id,
2439                         fdir_filter->action.behavior);
2440                 rte_errno = ENOTSUP;
2441                 return -rte_errno;
2442         }
2443         attributes->queue.index = fdir_filter->action.rx_queue;
2444         /* Handle L3. */
2445         switch (fdir_filter->input.flow_type) {
2446         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2447         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2448         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2449                 attributes->l3.ipv4.hdr = (struct ipv4_hdr){
2450                         .src_addr = input->flow.ip4_flow.src_ip,
2451                         .dst_addr = input->flow.ip4_flow.dst_ip,
2452                         .time_to_live = input->flow.ip4_flow.ttl,
2453                         .type_of_service = input->flow.ip4_flow.tos,
2454                 };
2455                 attributes->l3_mask.ipv4.hdr = (struct ipv4_hdr){
2456                         .src_addr = mask->ipv4_mask.src_ip,
2457                         .dst_addr = mask->ipv4_mask.dst_ip,
2458                         .time_to_live = mask->ipv4_mask.ttl,
2459                         .type_of_service = mask->ipv4_mask.tos,
2460                         .next_proto_id = mask->ipv4_mask.proto,
2461                 };
2462                 attributes->items[1] = (struct rte_flow_item){
2463                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
2464                         .spec = &attributes->l3,
2465                         .mask = &attributes->l3_mask,
2466                 };
2467                 break;
2468         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2469         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2470         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2471                 attributes->l3.ipv6.hdr = (struct ipv6_hdr){
2472                         .hop_limits = input->flow.ipv6_flow.hop_limits,
2473                         .proto = input->flow.ipv6_flow.proto,
2474                 };
2475
2476                 memcpy(attributes->l3.ipv6.hdr.src_addr,
2477                        input->flow.ipv6_flow.src_ip,
2478                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2479                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
2480                        input->flow.ipv6_flow.dst_ip,
2481                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
2482                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
2483                        mask->ipv6_mask.src_ip,
2484                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2485                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
2486                        mask->ipv6_mask.dst_ip,
2487                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
2488                 attributes->items[1] = (struct rte_flow_item){
2489                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
2490                         .spec = &attributes->l3,
2491                         .mask = &attributes->l3_mask,
2492                 };
2493                 break;
2494         default:
2495                 DRV_LOG(ERR, "port %u invalid flow type%d",
2496                         dev->data->port_id, fdir_filter->input.flow_type);
2497                 rte_errno = ENOTSUP;
2498                 return -rte_errno;
2499         }
2500         /* Handle L4. */
2501         switch (fdir_filter->input.flow_type) {
2502         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
2503                 attributes->l4.udp.hdr = (struct udp_hdr){
2504                         .src_port = input->flow.udp4_flow.src_port,
2505                         .dst_port = input->flow.udp4_flow.dst_port,
2506                 };
2507                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2508                         .src_port = mask->src_port_mask,
2509                         .dst_port = mask->dst_port_mask,
2510                 };
2511                 attributes->items[2] = (struct rte_flow_item){
2512                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2513                         .spec = &attributes->l4,
2514                         .mask = &attributes->l4_mask,
2515                 };
2516                 break;
2517         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
2518                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2519                         .src_port = input->flow.tcp4_flow.src_port,
2520                         .dst_port = input->flow.tcp4_flow.dst_port,
2521                 };
2522                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2523                         .src_port = mask->src_port_mask,
2524                         .dst_port = mask->dst_port_mask,
2525                 };
2526                 attributes->items[2] = (struct rte_flow_item){
2527                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2528                         .spec = &attributes->l4,
2529                         .mask = &attributes->l4_mask,
2530                 };
2531                 break;
2532         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
2533                 attributes->l4.udp.hdr = (struct udp_hdr){
2534                         .src_port = input->flow.udp6_flow.src_port,
2535                         .dst_port = input->flow.udp6_flow.dst_port,
2536                 };
2537                 attributes->l4_mask.udp.hdr = (struct udp_hdr){
2538                         .src_port = mask->src_port_mask,
2539                         .dst_port = mask->dst_port_mask,
2540                 };
2541                 attributes->items[2] = (struct rte_flow_item){
2542                         .type = RTE_FLOW_ITEM_TYPE_UDP,
2543                         .spec = &attributes->l4,
2544                         .mask = &attributes->l4_mask,
2545                 };
2546                 break;
2547         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
2548                 attributes->l4.tcp.hdr = (struct tcp_hdr){
2549                         .src_port = input->flow.tcp6_flow.src_port,
2550                         .dst_port = input->flow.tcp6_flow.dst_port,
2551                 };
2552                 attributes->l4_mask.tcp.hdr = (struct tcp_hdr){
2553                         .src_port = mask->src_port_mask,
2554                         .dst_port = mask->dst_port_mask,
2555                 };
2556                 attributes->items[2] = (struct rte_flow_item){
2557                         .type = RTE_FLOW_ITEM_TYPE_TCP,
2558                         .spec = &attributes->l4,
2559                         .mask = &attributes->l4_mask,
2560                 };
2561                 break;
2562         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
2563         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
2564                 break;
2565         default:
2566                 DRV_LOG(ERR, "port %u invalid flow type%d",
2567                         dev->data->port_id, fdir_filter->input.flow_type);
2568                 rte_errno = ENOTSUP;
2569                 return -rte_errno;
2570         }
2571         return 0;
2572 }
2573
2574 /**
2575  * Add new flow director filter and store it in list.
2576  *
2577  * @param dev
2578  *   Pointer to Ethernet device.
2579  * @param fdir_filter
2580  *   Flow director filter to add.
2581  *
2582  * @return
2583  *   0 on success, a negative errno value otherwise and rte_errno is set.
2584  */
2585 static int
2586 mlx5_fdir_filter_add(struct rte_eth_dev *dev,
2587                      const struct rte_eth_fdir_filter *fdir_filter)
2588 {
2589         struct priv *priv = dev->data->dev_private;
2590         struct mlx5_fdir attributes = {
2591                 .attr.group = 0,
2592                 .l2_mask = {
2593                         .dst.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2594                         .src.addr_bytes = "\x00\x00\x00\x00\x00\x00",
2595                         .type = 0,
2596                 },
2597         };
2598         struct rte_flow_error error;
2599         struct rte_flow *flow;
2600         int ret;
2601
2602         ret = mlx5_fdir_filter_convert(dev, fdir_filter, &attributes);
2603         if (ret)
2604                 return ret;
2605         flow = flow_list_create(dev, &priv->flows, &attributes.attr,
2606                                 attributes.items, attributes.actions, &error);
2607         if (flow) {
2608                 DRV_LOG(DEBUG, "port %u FDIR created %p", dev->data->port_id,
2609                         (void *)flow);
2610                 return 0;
2611         }
2612         return -rte_errno;
2613 }
2614
2615 /**
2616  * Delete specific filter.
2617  *
2618  * @param dev
2619  *   Pointer to Ethernet device.
2620  * @param fdir_filter
2621  *   Filter to be deleted.
2622  *
2623  * @return
2624  *   0 on success, a negative errno value otherwise and rte_errno is set.
2625  */
2626 static int
2627 mlx5_fdir_filter_delete(struct rte_eth_dev *dev __rte_unused,
2628                         const struct rte_eth_fdir_filter *fdir_filter
2629                         __rte_unused)
2630 {
2631         rte_errno = ENOTSUP;
2632         return -rte_errno;
2633 }
2634
2635 /**
2636  * Update queue for specific filter.
2637  *
2638  * @param dev
2639  *   Pointer to Ethernet device.
2640  * @param fdir_filter
2641  *   Filter to be updated.
2642  *
2643  * @return
2644  *   0 on success, a negative errno value otherwise and rte_errno is set.
2645  */
2646 static int
2647 mlx5_fdir_filter_update(struct rte_eth_dev *dev,
2648                         const struct rte_eth_fdir_filter *fdir_filter)
2649 {
2650         int ret;
2651
2652         ret = mlx5_fdir_filter_delete(dev, fdir_filter);
2653         if (ret)
2654                 return ret;
2655         return mlx5_fdir_filter_add(dev, fdir_filter);
2656 }
2657
2658 /**
2659  * Flush all filters.
2660  *
2661  * @param dev
2662  *   Pointer to Ethernet device.
2663  */
2664 static void
2665 mlx5_fdir_filter_flush(struct rte_eth_dev *dev)
2666 {
2667         struct priv *priv = dev->data->dev_private;
2668
2669         mlx5_flow_list_flush(dev, &priv->flows);
2670 }
2671
2672 /**
2673  * Get flow director information.
2674  *
2675  * @param dev
2676  *   Pointer to Ethernet device.
2677  * @param[out] fdir_info
2678  *   Resulting flow director information.
2679  */
2680 static void
2681 mlx5_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
2682 {
2683         struct rte_eth_fdir_masks *mask =
2684                 &dev->data->dev_conf.fdir_conf.mask;
2685
2686         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
2687         fdir_info->guarant_spc = 0;
2688         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
2689         fdir_info->max_flexpayload = 0;
2690         fdir_info->flow_types_mask[0] = 0;
2691         fdir_info->flex_payload_unit = 0;
2692         fdir_info->max_flex_payload_segment_num = 0;
2693         fdir_info->flex_payload_limit = 0;
2694         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
2695 }
2696
2697 /**
2698  * Deal with flow director operations.
2699  *
2700  * @param dev
2701  *   Pointer to Ethernet device.
2702  * @param filter_op
2703  *   Operation to perform.
2704  * @param arg
2705  *   Pointer to operation-specific structure.
2706  *
2707  * @return
2708  *   0 on success, a negative errno value otherwise and rte_errno is set.
2709  */
2710 static int
2711 mlx5_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
2712                     void *arg)
2713 {
2714         enum rte_fdir_mode fdir_mode =
2715                 dev->data->dev_conf.fdir_conf.mode;
2716
2717         if (filter_op == RTE_ETH_FILTER_NOP)
2718                 return 0;
2719         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
2720             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
2721                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
2722                         dev->data->port_id, fdir_mode);
2723                 rte_errno = EINVAL;
2724                 return -rte_errno;
2725         }
2726         switch (filter_op) {
2727         case RTE_ETH_FILTER_ADD:
2728                 return mlx5_fdir_filter_add(dev, arg);
2729         case RTE_ETH_FILTER_UPDATE:
2730                 return mlx5_fdir_filter_update(dev, arg);
2731         case RTE_ETH_FILTER_DELETE:
2732                 return mlx5_fdir_filter_delete(dev, arg);
2733         case RTE_ETH_FILTER_FLUSH:
2734                 mlx5_fdir_filter_flush(dev);
2735                 break;
2736         case RTE_ETH_FILTER_INFO:
2737                 mlx5_fdir_info_get(dev, arg);
2738                 break;
2739         default:
2740                 DRV_LOG(DEBUG, "port %u unknown operation %u",
2741                         dev->data->port_id, filter_op);
2742                 rte_errno = EINVAL;
2743                 return -rte_errno;
2744         }
2745         return 0;
2746 }
2747
2748 /**
2749  * Manage filter operations.
2750  *
2751  * @param dev
2752  *   Pointer to Ethernet device structure.
2753  * @param filter_type
2754  *   Filter type.
2755  * @param filter_op
2756  *   Operation to perform.
2757  * @param arg
2758  *   Pointer to operation-specific structure.
2759  *
2760  * @return
2761  *   0 on success, a negative errno value otherwise and rte_errno is set.
2762  */
2763 int
2764 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
2765                      enum rte_filter_type filter_type,
2766                      enum rte_filter_op filter_op,
2767                      void *arg)
2768 {
2769         switch (filter_type) {
2770         case RTE_ETH_FILTER_GENERIC:
2771                 if (filter_op != RTE_ETH_FILTER_GET) {
2772                         rte_errno = EINVAL;
2773                         return -rte_errno;
2774                 }
2775                 *(const void **)arg = &mlx5_flow_ops;
2776                 return 0;
2777         case RTE_ETH_FILTER_FDIR:
2778                 return mlx5_fdir_ctrl_func(dev, filter_op, arg);
2779         default:
2780                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
2781                         dev->data->port_id, filter_type);
2782                 rte_errno = ENOTSUP;
2783                 return -rte_errno;
2784         }
2785         return 0;
2786 }