drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_ethdev_driver.h>
  25 #include <rte_flow.h>
  26 #include <rte_flow_driver.h>
  27 #include <rte_malloc.h>
  28 #include <rte_ip.h>
  29
  30 #include "mlx5.h"
  31 #include "mlx5_defs.h"
  32 #include "mlx5_flow.h"
  33 #include "mlx5_glue.h"
  34 #include "mlx5_prm.h"
  35 #include "mlx5_rxtx.h"
  36
  37 /* Dev ops structure defined in mlx5.c */
  38 extern const struct eth_dev_ops mlx5_dev_ops;
  39 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  40
  41 /** Device flow drivers. */
  42 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  43 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  44 #endif
  45 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  46
  47 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  48
  49 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  50         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  51 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  52         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  53 #endif
  54         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  55         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  56 };
  57
  58 enum mlx5_expansion {
  59         MLX5_EXPANSION_ROOT,
  60         MLX5_EXPANSION_ROOT_OUTER,
  61         MLX5_EXPANSION_ROOT_ETH_VLAN,
  62         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  63         MLX5_EXPANSION_OUTER_ETH,
  64         MLX5_EXPANSION_OUTER_ETH_VLAN,
  65         MLX5_EXPANSION_OUTER_VLAN,
  66         MLX5_EXPANSION_OUTER_IPV4,
  67         MLX5_EXPANSION_OUTER_IPV4_UDP,
  68         MLX5_EXPANSION_OUTER_IPV4_TCP,
  69         MLX5_EXPANSION_OUTER_IPV6,
  70         MLX5_EXPANSION_OUTER_IPV6_UDP,
  71         MLX5_EXPANSION_OUTER_IPV6_TCP,
  72         MLX5_EXPANSION_VXLAN,
  73         MLX5_EXPANSION_VXLAN_GPE,
  74         MLX5_EXPANSION_GRE,
  75         MLX5_EXPANSION_MPLS,
  76         MLX5_EXPANSION_ETH,
  77         MLX5_EXPANSION_ETH_VLAN,
  78         MLX5_EXPANSION_VLAN,
  79         MLX5_EXPANSION_IPV4,
  80         MLX5_EXPANSION_IPV4_UDP,
  81         MLX5_EXPANSION_IPV4_TCP,
  82         MLX5_EXPANSION_IPV6,
  83         MLX5_EXPANSION_IPV6_UDP,
  84         MLX5_EXPANSION_IPV6_TCP,
  85 };
  86
  87 /** Supported expansion of items. */
  88 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  89         [MLX5_EXPANSION_ROOT] = {
  90                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  91                                                  MLX5_EXPANSION_IPV4,
  92                                                  MLX5_EXPANSION_IPV6),
  93                 .type = RTE_FLOW_ITEM_TYPE_END,
  94         },
  95         [MLX5_EXPANSION_ROOT_OUTER] = {
  96                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  97                                                  MLX5_EXPANSION_OUTER_IPV4,
  98                                                  MLX5_EXPANSION_OUTER_IPV6),
  99                 .type = RTE_FLOW_ITEM_TYPE_END,
 100         },
 101         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 102                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 103                 .type = RTE_FLOW_ITEM_TYPE_END,
 104         },
 105         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 106                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 107                 .type = RTE_FLOW_ITEM_TYPE_END,
 108         },
 109         [MLX5_EXPANSION_OUTER_ETH] = {
 110                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 111                                                  MLX5_EXPANSION_OUTER_IPV6,
 112                                                  MLX5_EXPANSION_MPLS),
 113                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 114                 .rss_types = 0,
 115         },
 116         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 117                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 118                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 119                 .rss_types = 0,
 120         },
 121         [MLX5_EXPANSION_OUTER_VLAN] = {
 122                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 123                                                  MLX5_EXPANSION_OUTER_IPV6),
 124                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 125         },
 126         [MLX5_EXPANSION_OUTER_IPV4] = {
 127                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 128                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 129                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 130                          MLX5_EXPANSION_GRE,
 131                          MLX5_EXPANSION_IPV4,
 132                          MLX5_EXPANSION_IPV6),
 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                          MLX5_EXPANSION_IPV4,
 152                          MLX5_EXPANSION_IPV6),
 153                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 154                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 155                         ETH_RSS_NONFRAG_IPV6_OTHER,
 156         },
 157         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 158                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 159                                                  MLX5_EXPANSION_VXLAN_GPE),
 160                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 161                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 162         },
 163         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 164                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 165                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 166         },
 167         [MLX5_EXPANSION_VXLAN] = {
 168                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 169                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 170         },
 171         [MLX5_EXPANSION_VXLAN_GPE] = {
 172                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 173                                                  MLX5_EXPANSION_IPV4,
 174                                                  MLX5_EXPANSION_IPV6),
 175                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 176         },
 177         [MLX5_EXPANSION_GRE] = {
 178                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 179                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 180         },
 181         [MLX5_EXPANSION_MPLS] = {
 182                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 183                                                  MLX5_EXPANSION_IPV6),
 184                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 185         },
 186         [MLX5_EXPANSION_ETH] = {
 187                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 188                                                  MLX5_EXPANSION_IPV6),
 189                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 190         },
 191         [MLX5_EXPANSION_ETH_VLAN] = {
 192                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 193                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 194         },
 195         [MLX5_EXPANSION_VLAN] = {
 196                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 197                                                  MLX5_EXPANSION_IPV6),
 198                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 199         },
 200         [MLX5_EXPANSION_IPV4] = {
 201                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 202                                                  MLX5_EXPANSION_IPV4_TCP),
 203                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 204                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 205                         ETH_RSS_NONFRAG_IPV4_OTHER,
 206         },
 207         [MLX5_EXPANSION_IPV4_UDP] = {
 208                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 209                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 210         },
 211         [MLX5_EXPANSION_IPV4_TCP] = {
 212                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 213                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 214         },
 215         [MLX5_EXPANSION_IPV6] = {
 216                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 217                                                  MLX5_EXPANSION_IPV6_TCP),
 218                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 219                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 220                         ETH_RSS_NONFRAG_IPV6_OTHER,
 221         },
 222         [MLX5_EXPANSION_IPV6_UDP] = {
 223                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 224                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 225         },
 226         [MLX5_EXPANSION_IPV6_TCP] = {
 227                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 228                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 229         },
 230 };
 231
 232 static const struct rte_flow_ops mlx5_flow_ops = {
 233         .validate = mlx5_flow_validate,
 234         .create = mlx5_flow_create,
 235         .destroy = mlx5_flow_destroy,
 236         .flush = mlx5_flow_flush,
 237         .isolate = mlx5_flow_isolate,
 238         .query = mlx5_flow_query,
 239         .dev_dump = mlx5_flow_dev_dump,
 240 };
 241
 242 /* Convert FDIR request to Generic flow. */
 243 struct mlx5_fdir {
 244         struct rte_flow_attr attr;
 245         struct rte_flow_item items[4];
 246         struct rte_flow_item_eth l2;
 247         struct rte_flow_item_eth l2_mask;
 248         union {
 249                 struct rte_flow_item_ipv4 ipv4;
 250                 struct rte_flow_item_ipv6 ipv6;
 251         } l3;
 252         union {
 253                 struct rte_flow_item_ipv4 ipv4;
 254                 struct rte_flow_item_ipv6 ipv6;
 255         } l3_mask;
 256         union {
 257                 struct rte_flow_item_udp udp;
 258                 struct rte_flow_item_tcp tcp;
 259         } l4;
 260         union {
 261                 struct rte_flow_item_udp udp;
 262                 struct rte_flow_item_tcp tcp;
 263         } l4_mask;
 264         struct rte_flow_action actions[2];
 265         struct rte_flow_action_queue queue;
 266 };
 267
 268 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 269 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 270         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 271 };
 272
 273 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 274 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 275         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 276         { 9, 10, 11 }, { 12, 13, 14 },
 277 };
 278
 279 /* Tunnel information. */
 280 struct mlx5_flow_tunnel_info {
 281         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 282         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 283 };
 284
 285 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 286         {
 287                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 288                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 289         },
 290         {
 291                 .tunnel = MLX5_FLOW_LAYER_GENEVE,
 292                 .ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
 293         },
 294         {
 295                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 296                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 297         },
 298         {
 299                 .tunnel = MLX5_FLOW_LAYER_GRE,
 300                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 301         },
 302         {
 303                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 304                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 305         },
 306         {
 307                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 308                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 309         },
 310         {
 311                 .tunnel = MLX5_FLOW_LAYER_NVGRE,
 312                 .ptype = RTE_PTYPE_TUNNEL_NVGRE,
 313         },
 314         {
 315                 .tunnel = MLX5_FLOW_LAYER_IPIP,
 316                 .ptype = RTE_PTYPE_TUNNEL_IP,
 317         },
 318         {
 319                 .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
 320                 .ptype = RTE_PTYPE_TUNNEL_IP,
 321         },
 322         {
 323                 .tunnel = MLX5_FLOW_LAYER_GTP,
 324                 .ptype = RTE_PTYPE_TUNNEL_GTPU,
 325         },
 326 };
 327
 328 /**
 329  * Translate tag ID to register.
 330  *
 331  * @param[in] dev
 332  *   Pointer to the Ethernet device structure.
 333  * @param[in] feature
 334  *   The feature that request the register.
 335  * @param[in] id
 336  *   The request register ID.
 337  * @param[out] error
 338  *   Error description in case of any.
 339  *
 340  * @return
 341  *   The request register on success, a negative errno
 342  *   value otherwise and rte_errno is set.
 343  */
 344 int
 345 mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 346                      enum mlx5_feature_name feature,
 347                      uint32_t id,
 348                      struct rte_flow_error *error)
 349 {
 350         struct mlx5_priv *priv = dev->data->dev_private;
 351         struct mlx5_dev_config *config = &priv->config;
 352         enum modify_reg start_reg;
 353         bool skip_mtr_reg = false;
 354
 355         switch (feature) {
 356         case MLX5_HAIRPIN_RX:
 357                 return REG_B;
 358         case MLX5_HAIRPIN_TX:
 359                 return REG_A;
 360         case MLX5_METADATA_RX:
 361                 switch (config->dv_xmeta_en) {
 362                 case MLX5_XMETA_MODE_LEGACY:
 363                         return REG_B;
 364                 case MLX5_XMETA_MODE_META16:
 365                         return REG_C_0;
 366                 case MLX5_XMETA_MODE_META32:
 367                         return REG_C_1;
 368                 }
 369                 break;
 370         case MLX5_METADATA_TX:
 371                 return REG_A;
 372         case MLX5_METADATA_FDB:
 373                 switch (config->dv_xmeta_en) {
 374                 case MLX5_XMETA_MODE_LEGACY:
 375                         return REG_NONE;
 376                 case MLX5_XMETA_MODE_META16:
 377                         return REG_C_0;
 378                 case MLX5_XMETA_MODE_META32:
 379                         return REG_C_1;
 380                 }
 381                 break;
 382         case MLX5_FLOW_MARK:
 383                 switch (config->dv_xmeta_en) {
 384                 case MLX5_XMETA_MODE_LEGACY:
 385                         return REG_NONE;
 386                 case MLX5_XMETA_MODE_META16:
 387                         return REG_C_1;
 388                 case MLX5_XMETA_MODE_META32:
 389                         return REG_C_0;
 390                 }
 391                 break;
 392         case MLX5_MTR_SFX:
 393                 /*
 394                  * If meter color and flow match share one register, flow match
 395                  * should use the meter color register for match.
 396                  */
 397                 if (priv->mtr_reg_share)
 398                         return priv->mtr_color_reg;
 399                 else
 400                         return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 401                                REG_C_3;
 402         case MLX5_MTR_COLOR:
 403                 RTE_ASSERT(priv->mtr_color_reg != REG_NONE);
 404                 return priv->mtr_color_reg;
 405         case MLX5_COPY_MARK:
 406                 /*
 407                  * Metadata COPY_MARK register using is in meter suffix sub
 408                  * flow while with meter. It's safe to share the same register.
 409                  */
 410                 return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 411         case MLX5_APP_TAG:
 412                 /*
 413                  * If meter is enable, it will engage the register for color
 414                  * match and flow match. If meter color match is not using the
 415                  * REG_C_2, need to skip the REG_C_x be used by meter color
 416                  * match.
 417                  * If meter is disable, free to use all available registers.
 418                  */
 419                 start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 420                             (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 421                 skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 422                 if (id > (REG_C_7 - start_reg))
 423                         return rte_flow_error_set(error, EINVAL,
 424                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 425                                                   NULL, "invalid tag id");
 426                 if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
 427                         return rte_flow_error_set(error, ENOTSUP,
 428                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 429                                                   NULL, "unsupported tag id");
 430                 /*
 431                  * This case means meter is using the REG_C_x great than 2.
 432                  * Take care not to conflict with meter color REG_C_x.
 433                  * If the available index REG_C_y >= REG_C_x, skip the
 434                  * color register.
 435                  */
 436                 if (skip_mtr_reg && config->flow_mreg_c
 437                     [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
 438                         if (config->flow_mreg_c
 439                             [id + 1 + start_reg - REG_C_0] != REG_NONE)
 440                                 return config->flow_mreg_c
 441                                                [id + 1 + start_reg - REG_C_0];
 442                         return rte_flow_error_set(error, ENOTSUP,
 443                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 444                                                   NULL, "unsupported tag id");
 445                 }
 446                 return config->flow_mreg_c[id + start_reg - REG_C_0];
 447         }
 448         assert(false);
 449         return rte_flow_error_set(error, EINVAL,
 450                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 451                                   NULL, "invalid feature name");
 452 }
 453
 454 /**
 455  * Check extensive flow metadata register support.
 456  *
 457  * @param dev
 458  *   Pointer to rte_eth_dev structure.
 459  *
 460  * @return
 461  *   True if device supports extensive flow metadata register, otherwise false.
 462  */
 463 bool
 464 mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
 465 {
 466         struct mlx5_priv *priv = dev->data->dev_private;
 467         struct mlx5_dev_config *config = &priv->config;
 468
 469         /*
 470          * Having available reg_c can be regarded inclusively as supporting
 471          * extensive flow metadata register, which could mean,
 472          * - metadata register copy action by modify header.
 473          * - 16 modify header actions is supported.
 474          * - reg_c's are preserved across different domain (FDB and NIC) on
 475          *   packet loopback by flow lookup miss.
 476          */
 477         return config->flow_mreg_c[2] != REG_NONE;
 478 }
 479
 480 /**
 481  * Discover the maximum number of priority available.
 482  *
 483  * @param[in] dev
 484  *   Pointer to the Ethernet device structure.
 485  *
 486  * @return
 487  *   number of supported flow priority on success, a negative errno
 488  *   value otherwise and rte_errno is set.
 489  */
 490 int
 491 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 492 {
 493         struct mlx5_priv *priv = dev->data->dev_private;
 494         struct {
 495                 struct ibv_flow_attr attr;
 496                 struct ibv_flow_spec_eth eth;
 497                 struct ibv_flow_spec_action_drop drop;
 498         } flow_attr = {
 499                 .attr = {
 500                         .num_of_specs = 2,
 501                         .port = (uint8_t)priv->ibv_port,
 502                 },
 503                 .eth = {
 504                         .type = IBV_FLOW_SPEC_ETH,
 505                         .size = sizeof(struct ibv_flow_spec_eth),
 506                 },
 507                 .drop = {
 508                         .size = sizeof(struct ibv_flow_spec_action_drop),
 509                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 510                 },
 511         };
 512         struct ibv_flow *flow;
 513         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 514         uint16_t vprio[] = { 8, 16 };
 515         int i;
 516         int priority = 0;
 517
 518         if (!drop) {
 519                 rte_errno = ENOTSUP;
 520                 return -rte_errno;
 521         }
 522         for (i = 0; i != RTE_DIM(vprio); i++) {
 523                 flow_attr.attr.priority = vprio[i] - 1;
 524                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 525                 if (!flow)
 526                         break;
 527                 claim_zero(mlx5_glue->destroy_flow(flow));
 528                 priority = vprio[i];
 529         }
 530         mlx5_hrxq_drop_release(dev);
 531         switch (priority) {
 532         case 8:
 533                 priority = RTE_DIM(priority_map_3);
 534                 break;
 535         case 16:
 536                 priority = RTE_DIM(priority_map_5);
 537                 break;
 538         default:
 539                 rte_errno = ENOTSUP;
 540                 DRV_LOG(ERR,
 541                         "port %u verbs maximum priority: %d expected 8/16",
 542                         dev->data->port_id, priority);
 543                 return -rte_errno;
 544         }
 545         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 546                 dev->data->port_id, priority);
 547         return priority;
 548 }
 549
 550 /**
 551  * Adjust flow priority based on the highest layer and the request priority.
 552  *
 553  * @param[in] dev
 554  *   Pointer to the Ethernet device structure.
 555  * @param[in] priority
 556  *   The rule base priority.
 557  * @param[in] subpriority
 558  *   The priority based on the items.
 559  *
 560  * @return
 561  *   The new priority.
 562  */
 563 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 564                                    uint32_t subpriority)
 565 {
 566         uint32_t res = 0;
 567         struct mlx5_priv *priv = dev->data->dev_private;
 568
 569         switch (priv->config.flow_prio) {
 570         case RTE_DIM(priority_map_3):
 571                 res = priority_map_3[priority][subpriority];
 572                 break;
 573         case RTE_DIM(priority_map_5):
 574                 res = priority_map_5[priority][subpriority];
 575                 break;
 576         }
 577         return  res;
 578 }
 579
 580 /**
 581  * Verify the @p item specifications (spec, last, mask) are compatible with the
 582  * NIC capabilities.
 583  *
 584  * @param[in] item
 585  *   Item specification.
 586  * @param[in] mask
 587  *   @p item->mask or flow default bit-masks.
 588  * @param[in] nic_mask
 589  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 590  * @param[in] size
 591  *   Bit-masks size in bytes.
 592  * @param[out] error
 593  *   Pointer to error structure.
 594  *
 595  * @return
 596  *   0 on success, a negative errno value otherwise and rte_errno is set.
 597  */
 598 int
 599 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 600                           const uint8_t *mask,
 601                           const uint8_t *nic_mask,
 602                           unsigned int size,
 603                           struct rte_flow_error *error)
 604 {
 605         unsigned int i;
 606
 607         assert(nic_mask);
 608         for (i = 0; i < size; ++i)
 609                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 610                         return rte_flow_error_set(error, ENOTSUP,
 611                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 612                                                   item,
 613                                                   "mask enables non supported"
 614                                                   " bits");
 615         if (!item->spec && (item->mask || item->last))
 616                 return rte_flow_error_set(error, EINVAL,
 617                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 618                                           "mask/last without a spec is not"
 619                                           " supported");
 620         if (item->spec && item->last) {
 621                 uint8_t spec[size];
 622                 uint8_t last[size];
 623                 unsigned int i;
 624                 int ret;
 625
 626                 for (i = 0; i < size; ++i) {
 627                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 628                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 629                 }
 630                 ret = memcmp(spec, last, size);
 631                 if (ret != 0)
 632                         return rte_flow_error_set(error, EINVAL,
 633                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 634                                                   item,
 635                                                   "range is not valid");
 636         }
 637         return 0;
 638 }
 639
 640 /**
 641  * Adjust the hash fields according to the @p flow information.
 642  *
 643  * @param[in] dev_flow.
 644  *   Pointer to the mlx5_flow.
 645  * @param[in] tunnel
 646  *   1 when the hash field is for a tunnel item.
 647  * @param[in] layer_types
 648  *   ETH_RSS_* types.
 649  * @param[in] hash_fields
 650  *   Item hash fields.
 651  *
 652  * @return
 653  *   The hash fields that should be used.
 654  */
 655 uint64_t
 656 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 657                             int tunnel __rte_unused, uint64_t layer_types,
 658                             uint64_t hash_fields)
 659 {
 660         struct rte_flow *flow = dev_flow->flow;
 661 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 662         int rss_request_inner = flow->rss.level >= 2;
 663
 664         /* Check RSS hash level for tunnel. */
 665         if (tunnel && rss_request_inner)
 666                 hash_fields |= IBV_RX_HASH_INNER;
 667         else if (tunnel || rss_request_inner)
 668                 return 0;
 669 #endif
 670         /* Check if requested layer matches RSS hash fields. */
 671         if (!(flow->rss.types & layer_types))
 672                 return 0;
 673         return hash_fields;
 674 }
 675
 676 /**
 677  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 678  * if several tunnel rules are used on this queue, the tunnel ptype will be
 679  * cleared.
 680  *
 681  * @param rxq_ctrl
 682  *   Rx queue to update.
 683  */
 684 static void
 685 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 686 {
 687         unsigned int i;
 688         uint32_t tunnel_ptype = 0;
 689
 690         /* Look up for the ptype to use. */
 691         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 692                 if (!rxq_ctrl->flow_tunnels_n[i])
 693                         continue;
 694                 if (!tunnel_ptype) {
 695                         tunnel_ptype = tunnels_info[i].ptype;
 696                 } else {
 697                         tunnel_ptype = 0;
 698                         break;
 699                 }
 700         }
 701         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 702 }
 703
 704 /**
 705  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 706  * flow.
 707  *
 708  * @param[in] dev
 709  *   Pointer to the Ethernet device structure.
 710  * @param[in] dev_flow
 711  *   Pointer to device flow structure.
 712  */
 713 static void
 714 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 715 {
 716         struct mlx5_priv *priv = dev->data->dev_private;
 717         struct rte_flow *flow = dev_flow->flow;
 718         const int mark = !!(dev_flow->actions &
 719                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 720         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 721         unsigned int i;
 722
 723         for (i = 0; i != flow->rss.queue_num; ++i) {
 724                 int idx = (*flow->rss.queue)[i];
 725                 struct mlx5_rxq_ctrl *rxq_ctrl =
 726                         container_of((*priv->rxqs)[idx],
 727                                      struct mlx5_rxq_ctrl, rxq);
 728
 729                 /*
 730                  * To support metadata register copy on Tx loopback,
 731                  * this must be always enabled (metadata may arive
 732                  * from other port - not from local flows only.
 733                  */
 734                 if (priv->config.dv_flow_en &&
 735                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 736                     mlx5_flow_ext_mreg_supported(dev)) {
 737                         rxq_ctrl->rxq.mark = 1;
 738                         rxq_ctrl->flow_mark_n = 1;
 739                 } else if (mark) {
 740                         rxq_ctrl->rxq.mark = 1;
 741                         rxq_ctrl->flow_mark_n++;
 742                 }
 743                 if (tunnel) {
 744                         unsigned int j;
 745
 746                         /* Increase the counter matching the flow. */
 747                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 748                                 if ((tunnels_info[j].tunnel &
 749                                      dev_flow->layers) ==
 750                                     tunnels_info[j].tunnel) {
 751                                         rxq_ctrl->flow_tunnels_n[j]++;
 752                                         break;
 753                                 }
 754                         }
 755                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 756                 }
 757         }
 758 }
 759
 760 /**
 761  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 762  *
 763  * @param[in] dev
 764  *   Pointer to the Ethernet device structure.
 765  * @param[in] flow
 766  *   Pointer to flow structure.
 767  */
 768 static void
 769 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 770 {
 771         struct mlx5_flow *dev_flow;
 772
 773         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 774                 flow_drv_rxq_flags_set(dev, dev_flow);
 775 }
 776
 777 /**
 778  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 779  * device flow if no other flow uses it with the same kind of request.
 780  *
 781  * @param dev
 782  *   Pointer to Ethernet device.
 783  * @param[in] dev_flow
 784  *   Pointer to the device flow.
 785  */
 786 static void
 787 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 788 {
 789         struct mlx5_priv *priv = dev->data->dev_private;
 790         struct rte_flow *flow = dev_flow->flow;
 791         const int mark = !!(dev_flow->actions &
 792                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 793         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 794         unsigned int i;
 795
 796         assert(dev->data->dev_started);
 797         for (i = 0; i != flow->rss.queue_num; ++i) {
 798                 int idx = (*flow->rss.queue)[i];
 799                 struct mlx5_rxq_ctrl *rxq_ctrl =
 800                         container_of((*priv->rxqs)[idx],
 801                                      struct mlx5_rxq_ctrl, rxq);
 802
 803                 if (priv->config.dv_flow_en &&
 804                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 805                     mlx5_flow_ext_mreg_supported(dev)) {
 806                         rxq_ctrl->rxq.mark = 1;
 807                         rxq_ctrl->flow_mark_n = 1;
 808                 } else if (mark) {
 809                         rxq_ctrl->flow_mark_n--;
 810                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 811                 }
 812                 if (tunnel) {
 813                         unsigned int j;
 814
 815                         /* Decrease the counter matching the flow. */
 816                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 817                                 if ((tunnels_info[j].tunnel &
 818                                      dev_flow->layers) ==
 819                                     tunnels_info[j].tunnel) {
 820                                         rxq_ctrl->flow_tunnels_n[j]--;
 821                                         break;
 822                                 }
 823                         }
 824                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 825                 }
 826         }
 827 }
 828
 829 /**
 830  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 831  * @p flow if no other flow uses it with the same kind of request.
 832  *
 833  * @param dev
 834  *   Pointer to Ethernet device.
 835  * @param[in] flow
 836  *   Pointer to the flow.
 837  */
 838 static void
 839 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 840 {
 841         struct mlx5_flow *dev_flow;
 842
 843         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 844                 flow_drv_rxq_flags_trim(dev, dev_flow);
 845 }
 846
 847 /**
 848  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 849  *
 850  * @param dev
 851  *   Pointer to Ethernet device.
 852  */
 853 static void
 854 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 855 {
 856         struct mlx5_priv *priv = dev->data->dev_private;
 857         unsigned int i;
 858
 859         for (i = 0; i != priv->rxqs_n; ++i) {
 860                 struct mlx5_rxq_ctrl *rxq_ctrl;
 861                 unsigned int j;
 862
 863                 if (!(*priv->rxqs)[i])
 864                         continue;
 865                 rxq_ctrl = container_of((*priv->rxqs)[i],
 866                                         struct mlx5_rxq_ctrl, rxq);
 867                 rxq_ctrl->flow_mark_n = 0;
 868                 rxq_ctrl->rxq.mark = 0;
 869                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 870                         rxq_ctrl->flow_tunnels_n[j] = 0;
 871                 rxq_ctrl->rxq.tunnel = 0;
 872         }
 873 }
 874
 875 /*
 876  * return a pointer to the desired action in the list of actions.
 877  *
 878  * @param[in] actions
 879  *   The list of actions to search the action in.
 880  * @param[in] action
 881  *   The action to find.
 882  *
 883  * @return
 884  *   Pointer to the action in the list, if found. NULL otherwise.
 885  */
 886 const struct rte_flow_action *
 887 mlx5_flow_find_action(const struct rte_flow_action *actions,
 888                       enum rte_flow_action_type action)
 889 {
 890         if (actions == NULL)
 891                 return NULL;
 892         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
 893                 if (actions->type == action)
 894                         return actions;
 895         return NULL;
 896 }
 897
 898 /*
 899  * Validate the flag action.
 900  *
 901  * @param[in] action_flags
 902  *   Bit-fields that holds the actions detected until now.
 903  * @param[in] attr
 904  *   Attributes of flow that includes this action.
 905  * @param[out] error
 906  *   Pointer to error structure.
 907  *
 908  * @return
 909  *   0 on success, a negative errno value otherwise and rte_errno is set.
 910  */
 911 int
 912 mlx5_flow_validate_action_flag(uint64_t action_flags,
 913                                const struct rte_flow_attr *attr,
 914                                struct rte_flow_error *error)
 915 {
 916         if (action_flags & MLX5_FLOW_ACTION_MARK)
 917                 return rte_flow_error_set(error, EINVAL,
 918                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 919                                           "can't mark and flag in same flow");
 920         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 921                 return rte_flow_error_set(error, EINVAL,
 922                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 923                                           "can't have 2 flag"
 924                                           " actions in same flow");
 925         if (attr->egress)
 926                 return rte_flow_error_set(error, ENOTSUP,
 927                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 928                                           "flag action not supported for "
 929                                           "egress");
 930         return 0;
 931 }
 932
 933 /*
 934  * Validate the mark action.
 935  *
 936  * @param[in] action
 937  *   Pointer to the queue action.
 938  * @param[in] action_flags
 939  *   Bit-fields that holds the actions detected until now.
 940  * @param[in] attr
 941  *   Attributes of flow that includes this action.
 942  * @param[out] error
 943  *   Pointer to error structure.
 944  *
 945  * @return
 946  *   0 on success, a negative errno value otherwise and rte_errno is set.
 947  */
 948 int
 949 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 950                                uint64_t action_flags,
 951                                const struct rte_flow_attr *attr,
 952                                struct rte_flow_error *error)
 953 {
 954         const struct rte_flow_action_mark *mark = action->conf;
 955
 956         if (!mark)
 957                 return rte_flow_error_set(error, EINVAL,
 958                                           RTE_FLOW_ERROR_TYPE_ACTION,
 959                                           action,
 960                                           "configuration cannot be null");
 961         if (mark->id >= MLX5_FLOW_MARK_MAX)
 962                 return rte_flow_error_set(error, EINVAL,
 963                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 964                                           &mark->id,
 965                                           "mark id must in 0 <= id < "
 966                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 967         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 968                 return rte_flow_error_set(error, EINVAL,
 969                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 970                                           "can't flag and mark in same flow");
 971         if (action_flags & MLX5_FLOW_ACTION_MARK)
 972                 return rte_flow_error_set(error, EINVAL,
 973                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 974                                           "can't have 2 mark actions in same"
 975                                           " flow");
 976         if (attr->egress)
 977                 return rte_flow_error_set(error, ENOTSUP,
 978                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 979                                           "mark action not supported for "
 980                                           "egress");
 981         return 0;
 982 }
 983
 984 /*
 985  * Validate the drop action.
 986  *
 987  * @param[in] action_flags
 988  *   Bit-fields that holds the actions detected until now.
 989  * @param[in] attr
 990  *   Attributes of flow that includes this action.
 991  * @param[out] error
 992  *   Pointer to error structure.
 993  *
 994  * @return
 995  *   0 on success, a negative errno value otherwise and rte_errno is set.
 996  */
 997 int
 998 mlx5_flow_validate_action_drop(uint64_t action_flags __rte_unused,
 999                                const struct rte_flow_attr *attr,
1000                                struct rte_flow_error *error)
1001 {
1002         if (attr->egress)
1003                 return rte_flow_error_set(error, ENOTSUP,
1004                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1005                                           "drop action not supported for "
1006                                           "egress");
1007         return 0;
1008 }
1009
1010 /*
1011  * Validate the queue action.
1012  *
1013  * @param[in] action
1014  *   Pointer to the queue action.
1015  * @param[in] action_flags
1016  *   Bit-fields that holds the actions detected until now.
1017  * @param[in] dev
1018  *   Pointer to the Ethernet device structure.
1019  * @param[in] attr
1020  *   Attributes of flow that includes this action.
1021  * @param[out] error
1022  *   Pointer to error structure.
1023  *
1024  * @return
1025  *   0 on success, a negative errno value otherwise and rte_errno is set.
1026  */
1027 int
1028 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
1029                                 uint64_t action_flags,
1030                                 struct rte_eth_dev *dev,
1031                                 const struct rte_flow_attr *attr,
1032                                 struct rte_flow_error *error)
1033 {
1034         struct mlx5_priv *priv = dev->data->dev_private;
1035         const struct rte_flow_action_queue *queue = action->conf;
1036
1037         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1038                 return rte_flow_error_set(error, EINVAL,
1039                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1040                                           "can't have 2 fate actions in"
1041                                           " same flow");
1042         if (!priv->rxqs_n)
1043                 return rte_flow_error_set(error, EINVAL,
1044                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1045                                           NULL, "No Rx queues configured");
1046         if (queue->index >= priv->rxqs_n)
1047                 return rte_flow_error_set(error, EINVAL,
1048                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1049                                           &queue->index,
1050                                           "queue index out of range");
1051         if (!(*priv->rxqs)[queue->index])
1052                 return rte_flow_error_set(error, EINVAL,
1053                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1054                                           &queue->index,
1055                                           "queue is not configured");
1056         if (attr->egress)
1057                 return rte_flow_error_set(error, ENOTSUP,
1058                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1059                                           "queue action not supported for "
1060                                           "egress");
1061         return 0;
1062 }
1063
1064 /*
1065  * Validate the rss action.
1066  *
1067  * @param[in] action
1068  *   Pointer to the queue action.
1069  * @param[in] action_flags
1070  *   Bit-fields that holds the actions detected until now.
1071  * @param[in] dev
1072  *   Pointer to the Ethernet device structure.
1073  * @param[in] attr
1074  *   Attributes of flow that includes this action.
1075  * @param[in] item_flags
1076  *   Items that were detected.
1077  * @param[out] error
1078  *   Pointer to error structure.
1079  *
1080  * @return
1081  *   0 on success, a negative errno value otherwise and rte_errno is set.
1082  */
1083 int
1084 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
1085                               uint64_t action_flags,
1086                               struct rte_eth_dev *dev,
1087                               const struct rte_flow_attr *attr,
1088                               uint64_t item_flags,
1089                               struct rte_flow_error *error)
1090 {
1091         struct mlx5_priv *priv = dev->data->dev_private;
1092         const struct rte_flow_action_rss *rss = action->conf;
1093         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1094         unsigned int i;
1095
1096         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1097                 return rte_flow_error_set(error, EINVAL,
1098                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1099                                           "can't have 2 fate actions"
1100                                           " in same flow");
1101         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
1102             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
1103                 return rte_flow_error_set(error, ENOTSUP,
1104                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1105                                           &rss->func,
1106                                           "RSS hash function not supported");
1107 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1108         if (rss->level > 2)
1109 #else
1110         if (rss->level > 1)
1111 #endif
1112                 return rte_flow_error_set(error, ENOTSUP,
1113                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1114                                           &rss->level,
1115                                           "tunnel RSS is not supported");
1116         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
1117         if (rss->key_len == 0 && rss->key != NULL)
1118                 return rte_flow_error_set(error, ENOTSUP,
1119                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1120                                           &rss->key_len,
1121                                           "RSS hash key length 0");
1122         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
1123                 return rte_flow_error_set(error, ENOTSUP,
1124                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1125                                           &rss->key_len,
1126                                           "RSS hash key too small");
1127         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
1128                 return rte_flow_error_set(error, ENOTSUP,
1129                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1130                                           &rss->key_len,
1131                                           "RSS hash key too large");
1132         if (rss->queue_num > priv->config.ind_table_max_size)
1133                 return rte_flow_error_set(error, ENOTSUP,
1134                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1135                                           &rss->queue_num,
1136                                           "number of queues too large");
1137         if (rss->types & MLX5_RSS_HF_MASK)
1138                 return rte_flow_error_set(error, ENOTSUP,
1139                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1140                                           &rss->types,
1141                                           "some RSS protocols are not"
1142                                           " supported");
1143         if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
1144             !(rss->types & ETH_RSS_IP))
1145                 return rte_flow_error_set(error, EINVAL,
1146                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1147                                           "L3 partial RSS requested but L3 RSS"
1148                                           " type not specified");
1149         if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
1150             !(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
1151                 return rte_flow_error_set(error, EINVAL,
1152                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1153                                           "L4 partial RSS requested but L4 RSS"
1154                                           " type not specified");
1155         if (!priv->rxqs_n)
1156                 return rte_flow_error_set(error, EINVAL,
1157                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1158                                           NULL, "No Rx queues configured");
1159         if (!rss->queue_num)
1160                 return rte_flow_error_set(error, EINVAL,
1161                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1162                                           NULL, "No queues configured");
1163         for (i = 0; i != rss->queue_num; ++i) {
1164                 if (rss->queue[i] >= priv->rxqs_n)
1165                         return rte_flow_error_set
1166                                 (error, EINVAL,
1167                                  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1168                                  &rss->queue[i], "queue index out of range");
1169                 if (!(*priv->rxqs)[rss->queue[i]])
1170                         return rte_flow_error_set
1171                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1172                                  &rss->queue[i], "queue is not configured");
1173         }
1174         if (attr->egress)
1175                 return rte_flow_error_set(error, ENOTSUP,
1176                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1177                                           "rss action not supported for "
1178                                           "egress");
1179         if (rss->level > 1 &&  !tunnel)
1180                 return rte_flow_error_set(error, EINVAL,
1181                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1182                                           "inner RSS is not supported for "
1183                                           "non-tunnel flows");
1184         return 0;
1185 }
1186
1187 /*
1188  * Validate the count action.
1189  *
1190  * @param[in] dev
1191  *   Pointer to the Ethernet device structure.
1192  * @param[in] attr
1193  *   Attributes of flow that includes this action.
1194  * @param[out] error
1195  *   Pointer to error structure.
1196  *
1197  * @return
1198  *   0 on success, a negative errno value otherwise and rte_errno is set.
1199  */
1200 int
1201 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
1202                                 const struct rte_flow_attr *attr,
1203                                 struct rte_flow_error *error)
1204 {
1205         if (attr->egress)
1206                 return rte_flow_error_set(error, ENOTSUP,
1207                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1208                                           "count action not supported for "
1209                                           "egress");
1210         return 0;
1211 }
1212
1213 /**
1214  * Verify the @p attributes will be correctly understood by the NIC and store
1215  * them in the @p flow if everything is correct.
1216  *
1217  * @param[in] dev
1218  *   Pointer to the Ethernet device structure.
1219  * @param[in] attributes
1220  *   Pointer to flow attributes
1221  * @param[out] error
1222  *   Pointer to error structure.
1223  *
1224  * @return
1225  *   0 on success, a negative errno value otherwise and rte_errno is set.
1226  */
1227 int
1228 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1229                               const struct rte_flow_attr *attributes,
1230                               struct rte_flow_error *error)
1231 {
1232         struct mlx5_priv *priv = dev->data->dev_private;
1233         uint32_t priority_max = priv->config.flow_prio - 1;
1234
1235         if (attributes->group)
1236                 return rte_flow_error_set(error, ENOTSUP,
1237                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1238                                           NULL, "groups is not supported");
1239         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1240             attributes->priority >= priority_max)
1241                 return rte_flow_error_set(error, ENOTSUP,
1242                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1243                                           NULL, "priority out of range");
1244         if (attributes->egress)
1245                 return rte_flow_error_set(error, ENOTSUP,
1246                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1247                                           "egress is not supported");
1248         if (attributes->transfer && !priv->config.dv_esw_en)
1249                 return rte_flow_error_set(error, ENOTSUP,
1250                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1251                                           NULL, "transfer is not supported");
1252         if (!attributes->ingress)
1253                 return rte_flow_error_set(error, EINVAL,
1254                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1255                                           NULL,
1256                                           "ingress attribute is mandatory");
1257         return 0;
1258 }
1259
1260 /**
1261  * Validate ICMP6 item.
1262  *
1263  * @param[in] item
1264  *   Item specification.
1265  * @param[in] item_flags
1266  *   Bit-fields that holds the items detected until now.
1267  * @param[out] error
1268  *   Pointer to error structure.
1269  *
1270  * @return
1271  *   0 on success, a negative errno value otherwise and rte_errno is set.
1272  */
1273 int
1274 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1275                                uint64_t item_flags,
1276                                uint8_t target_protocol,
1277                                struct rte_flow_error *error)
1278 {
1279         const struct rte_flow_item_icmp6 *mask = item->mask;
1280         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1281         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1282                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1283         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1284                                       MLX5_FLOW_LAYER_OUTER_L4;
1285         int ret;
1286
1287         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1288                 return rte_flow_error_set(error, EINVAL,
1289                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1290                                           "protocol filtering not compatible"
1291                                           " with ICMP6 layer");
1292         if (!(item_flags & l3m))
1293                 return rte_flow_error_set(error, EINVAL,
1294                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1295                                           "IPv6 is mandatory to filter on"
1296                                           " ICMP6");
1297         if (item_flags & l4m)
1298                 return rte_flow_error_set(error, EINVAL,
1299                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1300                                           "multiple L4 layers not supported");
1301         if (!mask)
1302                 mask = &rte_flow_item_icmp6_mask;
1303         ret = mlx5_flow_item_acceptable
1304                 (item, (const uint8_t *)mask,
1305                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1306                  sizeof(struct rte_flow_item_icmp6), error);
1307         if (ret < 0)
1308                 return ret;
1309         return 0;
1310 }
1311
1312 /**
1313  * Validate ICMP item.
1314  *
1315  * @param[in] item
1316  *   Item specification.
1317  * @param[in] item_flags
1318  *   Bit-fields that holds the items detected until now.
1319  * @param[out] error
1320  *   Pointer to error structure.
1321  *
1322  * @return
1323  *   0 on success, a negative errno value otherwise and rte_errno is set.
1324  */
1325 int
1326 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1327                              uint64_t item_flags,
1328                              uint8_t target_protocol,
1329                              struct rte_flow_error *error)
1330 {
1331         const struct rte_flow_item_icmp *mask = item->mask;
1332         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1333         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1334                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1335         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1336                                       MLX5_FLOW_LAYER_OUTER_L4;
1337         int ret;
1338
1339         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1340                 return rte_flow_error_set(error, EINVAL,
1341                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1342                                           "protocol filtering not compatible"
1343                                           " with ICMP layer");
1344         if (!(item_flags & l3m))
1345                 return rte_flow_error_set(error, EINVAL,
1346                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1347                                           "IPv4 is mandatory to filter"
1348                                           " on ICMP");
1349         if (item_flags & l4m)
1350                 return rte_flow_error_set(error, EINVAL,
1351                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1352                                           "multiple L4 layers not supported");
1353         if (!mask)
1354                 mask = &rte_flow_item_icmp_mask;
1355         ret = mlx5_flow_item_acceptable
1356                 (item, (const uint8_t *)mask,
1357                  (const uint8_t *)&rte_flow_item_icmp_mask,
1358                  sizeof(struct rte_flow_item_icmp), error);
1359         if (ret < 0)
1360                 return ret;
1361         return 0;
1362 }
1363
1364 /**
1365  * Validate Ethernet item.
1366  *
1367  * @param[in] item
1368  *   Item specification.
1369  * @param[in] item_flags
1370  *   Bit-fields that holds the items detected until now.
1371  * @param[out] error
1372  *   Pointer to error structure.
1373  *
1374  * @return
1375  *   0 on success, a negative errno value otherwise and rte_errno is set.
1376  */
1377 int
1378 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1379                             uint64_t item_flags,
1380                             struct rte_flow_error *error)
1381 {
1382         const struct rte_flow_item_eth *mask = item->mask;
1383         const struct rte_flow_item_eth nic_mask = {
1384                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1385                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1386                 .type = RTE_BE16(0xffff),
1387         };
1388         int ret;
1389         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1390         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1391                                        MLX5_FLOW_LAYER_OUTER_L2;
1392
1393         if (item_flags & ethm)
1394                 return rte_flow_error_set(error, ENOTSUP,
1395                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1396                                           "multiple L2 layers not supported");
1397         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
1398             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
1399                 return rte_flow_error_set(error, EINVAL,
1400                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1401                                           "L2 layer should not follow "
1402                                           "L3 layers");
1403         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
1404             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
1405                 return rte_flow_error_set(error, EINVAL,
1406                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1407                                           "L2 layer should not follow VLAN");
1408         if (!mask)
1409                 mask = &rte_flow_item_eth_mask;
1410         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1411                                         (const uint8_t *)&nic_mask,
1412                                         sizeof(struct rte_flow_item_eth),
1413                                         error);
1414         return ret;
1415 }
1416
1417 /**
1418  * Validate VLAN item.
1419  *
1420  * @param[in] item
1421  *   Item specification.
1422  * @param[in] item_flags
1423  *   Bit-fields that holds the items detected until now.
1424  * @param[in] dev
1425  *   Ethernet device flow is being created on.
1426  * @param[out] error
1427  *   Pointer to error structure.
1428  *
1429  * @return
1430  *   0 on success, a negative errno value otherwise and rte_errno is set.
1431  */
1432 int
1433 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1434                              uint64_t item_flags,
1435                              struct rte_eth_dev *dev,
1436                              struct rte_flow_error *error)
1437 {
1438         const struct rte_flow_item_vlan *spec = item->spec;
1439         const struct rte_flow_item_vlan *mask = item->mask;
1440         const struct rte_flow_item_vlan nic_mask = {
1441                 .tci = RTE_BE16(UINT16_MAX),
1442                 .inner_type = RTE_BE16(UINT16_MAX),
1443         };
1444         uint16_t vlan_tag = 0;
1445         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1446         int ret;
1447         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1448                                         MLX5_FLOW_LAYER_INNER_L4) :
1449                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1450                                         MLX5_FLOW_LAYER_OUTER_L4);
1451         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1452                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1453
1454         if (item_flags & vlanm)
1455                 return rte_flow_error_set(error, EINVAL,
1456                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1457                                           "multiple VLAN layers not supported");
1458         else if ((item_flags & l34m) != 0)
1459                 return rte_flow_error_set(error, EINVAL,
1460                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1461                                           "VLAN cannot follow L3/L4 layer");
1462         if (!mask)
1463                 mask = &rte_flow_item_vlan_mask;
1464         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1465                                         (const uint8_t *)&nic_mask,
1466                                         sizeof(struct rte_flow_item_vlan),
1467                                         error);
1468         if (ret)
1469                 return ret;
1470         if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
1471                 struct mlx5_priv *priv = dev->data->dev_private;
1472
1473                 if (priv->vmwa_context) {
1474                         /*
1475                          * Non-NULL context means we have a virtual machine
1476                          * and SR-IOV enabled, we have to create VLAN interface
1477                          * to make hypervisor to setup E-Switch vport
1478                          * context correctly. We avoid creating the multiple
1479                          * VLAN interfaces, so we cannot support VLAN tag mask.
1480                          */
1481                         return rte_flow_error_set(error, EINVAL,
1482                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1483                                                   item,
1484                                                   "VLAN tag mask is not"
1485                                                   " supported in virtual"
1486                                                   " environment");
1487                 }
1488         }
1489         if (spec) {
1490                 vlan_tag = spec->tci;
1491                 vlan_tag &= mask->tci;
1492         }
1493         /*
1494          * From verbs perspective an empty VLAN is equivalent
1495          * to a packet without VLAN layer.
1496          */
1497         if (!vlan_tag)
1498                 return rte_flow_error_set(error, EINVAL,
1499                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1500                                           item->spec,
1501                                           "VLAN cannot be empty");
1502         return 0;
1503 }
1504
1505 /**
1506  * Validate IPV4 item.
1507  *
1508  * @param[in] item
1509  *   Item specification.
1510  * @param[in] item_flags
1511  *   Bit-fields that holds the items detected until now.
1512  * @param[in] acc_mask
1513  *   Acceptable mask, if NULL default internal default mask
1514  *   will be used to check whether item fields are supported.
1515  * @param[out] error
1516  *   Pointer to error structure.
1517  *
1518  * @return
1519  *   0 on success, a negative errno value otherwise and rte_errno is set.
1520  */
1521 int
1522 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1523                              uint64_t item_flags,
1524                              uint64_t last_item,
1525                              uint16_t ether_type,
1526                              const struct rte_flow_item_ipv4 *acc_mask,
1527                              struct rte_flow_error *error)
1528 {
1529         const struct rte_flow_item_ipv4 *mask = item->mask;
1530         const struct rte_flow_item_ipv4 *spec = item->spec;
1531         const struct rte_flow_item_ipv4 nic_mask = {
1532                 .hdr = {
1533                         .src_addr = RTE_BE32(0xffffffff),
1534                         .dst_addr = RTE_BE32(0xffffffff),
1535                         .type_of_service = 0xff,
1536                         .next_proto_id = 0xff,
1537                 },
1538         };
1539         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1540         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1541                                       MLX5_FLOW_LAYER_OUTER_L3;
1542         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1543                                       MLX5_FLOW_LAYER_OUTER_L4;
1544         int ret;
1545         uint8_t next_proto = 0xFF;
1546         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1547                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1548                                   MLX5_FLOW_LAYER_INNER_VLAN);
1549
1550         if ((last_item & l2_vlan) && ether_type &&
1551             ether_type != RTE_ETHER_TYPE_IPV4)
1552                 return rte_flow_error_set(error, EINVAL,
1553                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1554                                           "IPv4 cannot follow L2/VLAN layer "
1555                                           "which ether type is not IPv4");
1556         if (item_flags & MLX5_FLOW_LAYER_IPIP) {
1557                 if (mask && spec)
1558                         next_proto = mask->hdr.next_proto_id &
1559                                      spec->hdr.next_proto_id;
1560                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1561                         return rte_flow_error_set(error, EINVAL,
1562                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1563                                                   item,
1564                                                   "multiple tunnel "
1565                                                   "not supported");
1566         }
1567         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
1568                 return rte_flow_error_set(error, EINVAL,
1569                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1570                                           "wrong tunnel type - IPv6 specified "
1571                                           "but IPv4 item provided");
1572         if (item_flags & l3m)
1573                 return rte_flow_error_set(error, ENOTSUP,
1574                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1575                                           "multiple L3 layers not supported");
1576         else if (item_flags & l4m)
1577                 return rte_flow_error_set(error, EINVAL,
1578                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1579                                           "L3 cannot follow an L4 layer.");
1580         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1581                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1582                 return rte_flow_error_set(error, EINVAL,
1583                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1584                                           "L3 cannot follow an NVGRE layer.");
1585         if (!mask)
1586                 mask = &rte_flow_item_ipv4_mask;
1587         else if (mask->hdr.next_proto_id != 0 &&
1588                  mask->hdr.next_proto_id != 0xff)
1589                 return rte_flow_error_set(error, EINVAL,
1590                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1591                                           "partial mask is not supported"
1592                                           " for protocol");
1593         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1594                                         acc_mask ? (const uint8_t *)acc_mask
1595                                                  : (const uint8_t *)&nic_mask,
1596                                         sizeof(struct rte_flow_item_ipv4),
1597                                         error);
1598         if (ret < 0)
1599                 return ret;
1600         return 0;
1601 }
1602
1603 /**
1604  * Validate IPV6 item.
1605  *
1606  * @param[in] item
1607  *   Item specification.
1608  * @param[in] item_flags
1609  *   Bit-fields that holds the items detected until now.
1610  * @param[in] acc_mask
1611  *   Acceptable mask, if NULL default internal default mask
1612  *   will be used to check whether item fields are supported.
1613  * @param[out] error
1614  *   Pointer to error structure.
1615  *
1616  * @return
1617  *   0 on success, a negative errno value otherwise and rte_errno is set.
1618  */
1619 int
1620 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1621                              uint64_t item_flags,
1622                              uint64_t last_item,
1623                              uint16_t ether_type,
1624                              const struct rte_flow_item_ipv6 *acc_mask,
1625                              struct rte_flow_error *error)
1626 {
1627         const struct rte_flow_item_ipv6 *mask = item->mask;
1628         const struct rte_flow_item_ipv6 *spec = item->spec;
1629         const struct rte_flow_item_ipv6 nic_mask = {
1630                 .hdr = {
1631                         .src_addr =
1632                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1633                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1634                         .dst_addr =
1635                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1636                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1637                         .vtc_flow = RTE_BE32(0xffffffff),
1638                         .proto = 0xff,
1639                         .hop_limits = 0xff,
1640                 },
1641         };
1642         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1643         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1644                                       MLX5_FLOW_LAYER_OUTER_L3;
1645         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1646                                       MLX5_FLOW_LAYER_OUTER_L4;
1647         int ret;
1648         uint8_t next_proto = 0xFF;
1649         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1650                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1651                                   MLX5_FLOW_LAYER_INNER_VLAN);
1652
1653         if ((last_item & l2_vlan) && ether_type &&
1654             ether_type != RTE_ETHER_TYPE_IPV6)
1655                 return rte_flow_error_set(error, EINVAL,
1656                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1657                                           "IPv6 cannot follow L2/VLAN layer "
1658                                           "which ether type is not IPv6");
1659         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
1660                 if (mask && spec)
1661                         next_proto = mask->hdr.proto & spec->hdr.proto;
1662                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1663                         return rte_flow_error_set(error, EINVAL,
1664                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1665                                                   item,
1666                                                   "multiple tunnel "
1667                                                   "not supported");
1668         }
1669         if (item_flags & MLX5_FLOW_LAYER_IPIP)
1670                 return rte_flow_error_set(error, EINVAL,
1671                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1672                                           "wrong tunnel type - IPv4 specified "
1673                                           "but IPv6 item provided");
1674         if (item_flags & l3m)
1675                 return rte_flow_error_set(error, ENOTSUP,
1676                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1677                                           "multiple L3 layers not supported");
1678         else if (item_flags & l4m)
1679                 return rte_flow_error_set(error, EINVAL,
1680                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1681                                           "L3 cannot follow an L4 layer.");
1682         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1683                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1684                 return rte_flow_error_set(error, EINVAL,
1685                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1686                                           "L3 cannot follow an NVGRE layer.");
1687         if (!mask)
1688                 mask = &rte_flow_item_ipv6_mask;
1689         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1690                                         acc_mask ? (const uint8_t *)acc_mask
1691                                                  : (const uint8_t *)&nic_mask,
1692                                         sizeof(struct rte_flow_item_ipv6),
1693                                         error);
1694         if (ret < 0)
1695                 return ret;
1696         return 0;
1697 }
1698
1699 /**
1700  * Validate UDP item.
1701  *
1702  * @param[in] item
1703  *   Item specification.
1704  * @param[in] item_flags
1705  *   Bit-fields that holds the items detected until now.
1706  * @param[in] target_protocol
1707  *   The next protocol in the previous item.
1708  * @param[in] flow_mask
1709  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1710  * @param[out] error
1711  *   Pointer to error structure.
1712  *
1713  * @return
1714  *   0 on success, a negative errno value otherwise and rte_errno is set.
1715  */
1716 int
1717 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1718                             uint64_t item_flags,
1719                             uint8_t target_protocol,
1720                             struct rte_flow_error *error)
1721 {
1722         const struct rte_flow_item_udp *mask = item->mask;
1723         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1724         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1725                                       MLX5_FLOW_LAYER_OUTER_L3;
1726         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1727                                       MLX5_FLOW_LAYER_OUTER_L4;
1728         int ret;
1729
1730         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1731                 return rte_flow_error_set(error, EINVAL,
1732                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1733                                           "protocol filtering not compatible"
1734                                           " with UDP layer");
1735         if (!(item_flags & l3m))
1736                 return rte_flow_error_set(error, EINVAL,
1737                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1738                                           "L3 is mandatory to filter on L4");
1739         if (item_flags & l4m)
1740                 return rte_flow_error_set(error, EINVAL,
1741                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1742                                           "multiple L4 layers not supported");
1743         if (!mask)
1744                 mask = &rte_flow_item_udp_mask;
1745         ret = mlx5_flow_item_acceptable
1746                 (item, (const uint8_t *)mask,
1747                  (const uint8_t *)&rte_flow_item_udp_mask,
1748                  sizeof(struct rte_flow_item_udp), error);
1749         if (ret < 0)
1750                 return ret;
1751         return 0;
1752 }
1753
1754 /**
1755  * Validate TCP item.
1756  *
1757  * @param[in] item
1758  *   Item specification.
1759  * @param[in] item_flags
1760  *   Bit-fields that holds the items detected until now.
1761  * @param[in] target_protocol
1762  *   The next protocol in the previous item.
1763  * @param[out] error
1764  *   Pointer to error structure.
1765  *
1766  * @return
1767  *   0 on success, a negative errno value otherwise and rte_errno is set.
1768  */
1769 int
1770 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1771                             uint64_t item_flags,
1772                             uint8_t target_protocol,
1773                             const struct rte_flow_item_tcp *flow_mask,
1774                             struct rte_flow_error *error)
1775 {
1776         const struct rte_flow_item_tcp *mask = item->mask;
1777         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1778         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1779                                       MLX5_FLOW_LAYER_OUTER_L3;
1780         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1781                                       MLX5_FLOW_LAYER_OUTER_L4;
1782         int ret;
1783
1784         assert(flow_mask);
1785         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1786                 return rte_flow_error_set(error, EINVAL,
1787                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1788                                           "protocol filtering not compatible"
1789                                           " with TCP layer");
1790         if (!(item_flags & l3m))
1791                 return rte_flow_error_set(error, EINVAL,
1792                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1793                                           "L3 is mandatory to filter on L4");
1794         if (item_flags & l4m)
1795                 return rte_flow_error_set(error, EINVAL,
1796                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1797                                           "multiple L4 layers not supported");
1798         if (!mask)
1799                 mask = &rte_flow_item_tcp_mask;
1800         ret = mlx5_flow_item_acceptable
1801                 (item, (const uint8_t *)mask,
1802                  (const uint8_t *)flow_mask,
1803                  sizeof(struct rte_flow_item_tcp), error);
1804         if (ret < 0)
1805                 return ret;
1806         return 0;
1807 }
1808
1809 /**
1810  * Validate VXLAN item.
1811  *
1812  * @param[in] item
1813  *   Item specification.
1814  * @param[in] item_flags
1815  *   Bit-fields that holds the items detected until now.
1816  * @param[in] target_protocol
1817  *   The next protocol in the previous item.
1818  * @param[out] error
1819  *   Pointer to error structure.
1820  *
1821  * @return
1822  *   0 on success, a negative errno value otherwise and rte_errno is set.
1823  */
1824 int
1825 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1826                               uint64_t item_flags,
1827                               struct rte_flow_error *error)
1828 {
1829         const struct rte_flow_item_vxlan *spec = item->spec;
1830         const struct rte_flow_item_vxlan *mask = item->mask;
1831         int ret;
1832         union vni {
1833                 uint32_t vlan_id;
1834                 uint8_t vni[4];
1835         } id = { .vlan_id = 0, };
1836         uint32_t vlan_id = 0;
1837
1838
1839         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1840                 return rte_flow_error_set(error, ENOTSUP,
1841                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1842                                           "multiple tunnel layers not"
1843                                           " supported");
1844         /*
1845          * Verify only UDPv4 is present as defined in
1846          * https://tools.ietf.org/html/rfc7348
1847          */
1848         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1849                 return rte_flow_error_set(error, EINVAL,
1850                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1851                                           "no outer UDP layer found");
1852         if (!mask)
1853                 mask = &rte_flow_item_vxlan_mask;
1854         ret = mlx5_flow_item_acceptable
1855                 (item, (const uint8_t *)mask,
1856                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1857                  sizeof(struct rte_flow_item_vxlan),
1858                  error);
1859         if (ret < 0)
1860                 return ret;
1861         if (spec) {
1862                 memcpy(&id.vni[1], spec->vni, 3);
1863                 vlan_id = id.vlan_id;
1864                 memcpy(&id.vni[1], mask->vni, 3);
1865                 vlan_id &= id.vlan_id;
1866         }
1867         /*
1868          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1869          * only this layer is defined in the Verbs specification it is
1870          * interpreted as wildcard and all packets will match this
1871          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1872          * udp), all packets matching the layers before will also
1873          * match this rule.  To avoid such situation, VNI 0 is
1874          * currently refused.
1875          */
1876         if (!vlan_id)
1877                 return rte_flow_error_set(error, ENOTSUP,
1878                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1879                                           "VXLAN vni cannot be 0");
1880         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1881                 return rte_flow_error_set(error, ENOTSUP,
1882                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1883                                           "VXLAN tunnel must be fully defined");
1884         return 0;
1885 }
1886
1887 /**
1888  * Validate VXLAN_GPE item.
1889  *
1890  * @param[in] item
1891  *   Item specification.
1892  * @param[in] item_flags
1893  *   Bit-fields that holds the items detected until now.
1894  * @param[in] priv
1895  *   Pointer to the private data structure.
1896  * @param[in] target_protocol
1897  *   The next protocol in the previous item.
1898  * @param[out] error
1899  *   Pointer to error structure.
1900  *
1901  * @return
1902  *   0 on success, a negative errno value otherwise and rte_errno is set.
1903  */
1904 int
1905 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1906                                   uint64_t item_flags,
1907                                   struct rte_eth_dev *dev,
1908                                   struct rte_flow_error *error)
1909 {
1910         struct mlx5_priv *priv = dev->data->dev_private;
1911         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1912         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1913         int ret;
1914         union vni {
1915                 uint32_t vlan_id;
1916                 uint8_t vni[4];
1917         } id = { .vlan_id = 0, };
1918         uint32_t vlan_id = 0;
1919
1920         if (!priv->config.l3_vxlan_en)
1921                 return rte_flow_error_set(error, ENOTSUP,
1922                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1923                                           "L3 VXLAN is not enabled by device"
1924                                           " parameter and/or not configured in"
1925                                           " firmware");
1926         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1927                 return rte_flow_error_set(error, ENOTSUP,
1928                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1929                                           "multiple tunnel layers not"
1930                                           " supported");
1931         /*
1932          * Verify only UDPv4 is present as defined in
1933          * https://tools.ietf.org/html/rfc7348
1934          */
1935         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1936                 return rte_flow_error_set(error, EINVAL,
1937                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1938                                           "no outer UDP layer found");
1939         if (!mask)
1940                 mask = &rte_flow_item_vxlan_gpe_mask;
1941         ret = mlx5_flow_item_acceptable
1942                 (item, (const uint8_t *)mask,
1943                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1944                  sizeof(struct rte_flow_item_vxlan_gpe),
1945                  error);
1946         if (ret < 0)
1947                 return ret;
1948         if (spec) {
1949                 if (spec->protocol)
1950                         return rte_flow_error_set(error, ENOTSUP,
1951                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1952                                                   item,
1953                                                   "VxLAN-GPE protocol"
1954                                                   " not supported");
1955                 memcpy(&id.vni[1], spec->vni, 3);
1956                 vlan_id = id.vlan_id;
1957                 memcpy(&id.vni[1], mask->vni, 3);
1958                 vlan_id &= id.vlan_id;
1959         }
1960         /*
1961          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1962          * layer is defined in the Verbs specification it is interpreted as
1963          * wildcard and all packets will match this rule, if it follows a full
1964          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1965          * before will also match this rule.  To avoid such situation, VNI 0
1966          * is currently refused.
1967          */
1968         if (!vlan_id)
1969                 return rte_flow_error_set(error, ENOTSUP,
1970                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1971                                           "VXLAN-GPE vni cannot be 0");
1972         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1973                 return rte_flow_error_set(error, ENOTSUP,
1974                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1975                                           "VXLAN-GPE tunnel must be fully"
1976                                           " defined");
1977         return 0;
1978 }
1979 /**
1980  * Validate GRE Key item.
1981  *
1982  * @param[in] item
1983  *   Item specification.
1984  * @param[in] item_flags
1985  *   Bit flags to mark detected items.
1986  * @param[in] gre_item
1987  *   Pointer to gre_item
1988  * @param[out] error
1989  *   Pointer to error structure.
1990  *
1991  * @return
1992  *   0 on success, a negative errno value otherwise and rte_errno is set.
1993  */
1994 int
1995 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
1996                                 uint64_t item_flags,
1997                                 const struct rte_flow_item *gre_item,
1998                                 struct rte_flow_error *error)
1999 {
2000         const rte_be32_t *mask = item->mask;
2001         int ret = 0;
2002         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2003         const struct rte_flow_item_gre *gre_spec;
2004         const struct rte_flow_item_gre *gre_mask;
2005
2006         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2007                 return rte_flow_error_set(error, ENOTSUP,
2008                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2009                                           "Multiple GRE key not support");
2010         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2011                 return rte_flow_error_set(error, ENOTSUP,
2012                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2013                                           "No preceding GRE header");
2014         if (item_flags & MLX5_FLOW_LAYER_INNER)
2015                 return rte_flow_error_set(error, ENOTSUP,
2016                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2017                                           "GRE key following a wrong item");
2018         gre_mask = gre_item->mask;
2019         if (!gre_mask)
2020                 gre_mask = &rte_flow_item_gre_mask;
2021         gre_spec = gre_item->spec;
2022         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2023                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2024                 return rte_flow_error_set(error, EINVAL,
2025                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2026                                           "Key bit must be on");
2027
2028         if (!mask)
2029                 mask = &gre_key_default_mask;
2030         ret = mlx5_flow_item_acceptable
2031                 (item, (const uint8_t *)mask,
2032                  (const uint8_t *)&gre_key_default_mask,
2033                  sizeof(rte_be32_t), error);
2034         return ret;
2035 }
2036
2037 /**
2038  * Validate GRE item.
2039  *
2040  * @param[in] item
2041  *   Item specification.
2042  * @param[in] item_flags
2043  *   Bit flags to mark detected items.
2044  * @param[in] target_protocol
2045  *   The next protocol in the previous item.
2046  * @param[out] error
2047  *   Pointer to error structure.
2048  *
2049  * @return
2050  *   0 on success, a negative errno value otherwise and rte_errno is set.
2051  */
2052 int
2053 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2054                             uint64_t item_flags,
2055                             uint8_t target_protocol,
2056                             struct rte_flow_error *error)
2057 {
2058         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2059         const struct rte_flow_item_gre *mask = item->mask;
2060         int ret;
2061         const struct rte_flow_item_gre nic_mask = {
2062                 .c_rsvd0_ver = RTE_BE16(0xB000),
2063                 .protocol = RTE_BE16(UINT16_MAX),
2064         };
2065
2066         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2067                 return rte_flow_error_set(error, EINVAL,
2068                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2069                                           "protocol filtering not compatible"
2070                                           " with this GRE layer");
2071         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2072                 return rte_flow_error_set(error, ENOTSUP,
2073                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2074                                           "multiple tunnel layers not"
2075                                           " supported");
2076         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2077                 return rte_flow_error_set(error, ENOTSUP,
2078                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2079                                           "L3 Layer is missing");
2080         if (!mask)
2081                 mask = &rte_flow_item_gre_mask;
2082         ret = mlx5_flow_item_acceptable
2083                 (item, (const uint8_t *)mask,
2084                  (const uint8_t *)&nic_mask,
2085                  sizeof(struct rte_flow_item_gre), error);
2086         if (ret < 0)
2087                 return ret;
2088 #ifndef HAVE_MLX5DV_DR
2089 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2090         if (spec && (spec->protocol & mask->protocol))
2091                 return rte_flow_error_set(error, ENOTSUP,
2092                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2093                                           "without MPLS support the"
2094                                           " specification cannot be used for"
2095                                           " filtering");
2096 #endif
2097 #endif
2098         return 0;
2099 }
2100
2101 /**
2102  * Validate Geneve item.
2103  *
2104  * @param[in] item
2105  *   Item specification.
2106  * @param[in] itemFlags
2107  *   Bit-fields that holds the items detected until now.
2108  * @param[in] enPriv
2109  *   Pointer to the private data structure.
2110  * @param[out] error
2111  *   Pointer to error structure.
2112  *
2113  * @return
2114  *   0 on success, a negative errno value otherwise and rte_errno is set.
2115  */
2116
2117 int
2118 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2119                                uint64_t item_flags,
2120                                struct rte_eth_dev *dev,
2121                                struct rte_flow_error *error)
2122 {
2123         struct mlx5_priv *priv = dev->data->dev_private;
2124         const struct rte_flow_item_geneve *spec = item->spec;
2125         const struct rte_flow_item_geneve *mask = item->mask;
2126         int ret;
2127         uint16_t gbhdr;
2128         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2129                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2130         const struct rte_flow_item_geneve nic_mask = {
2131                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2132                 .vni = "\xff\xff\xff",
2133                 .protocol = RTE_BE16(UINT16_MAX),
2134         };
2135
2136         if (!(priv->config.hca_attr.flex_parser_protocols &
2137               MLX5_HCA_FLEX_GENEVE_ENABLED) ||
2138             !priv->config.hca_attr.tunnel_stateless_geneve_rx)
2139                 return rte_flow_error_set(error, ENOTSUP,
2140                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2141                                           "L3 Geneve is not enabled by device"
2142                                           " parameter and/or not configured in"
2143                                           " firmware");
2144         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2145                 return rte_flow_error_set(error, ENOTSUP,
2146                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2147                                           "multiple tunnel layers not"
2148                                           " supported");
2149         /*
2150          * Verify only UDPv4 is present as defined in
2151          * https://tools.ietf.org/html/rfc7348
2152          */
2153         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2154                 return rte_flow_error_set(error, EINVAL,
2155                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2156                                           "no outer UDP layer found");
2157         if (!mask)
2158                 mask = &rte_flow_item_geneve_mask;
2159         ret = mlx5_flow_item_acceptable
2160                                   (item, (const uint8_t *)mask,
2161                                    (const uint8_t *)&nic_mask,
2162                                    sizeof(struct rte_flow_item_geneve), error);
2163         if (ret)
2164                 return ret;
2165         if (spec) {
2166                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2167                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2168                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2169                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2170                         return rte_flow_error_set(error, ENOTSUP,
2171                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2172                                                   item,
2173                                                   "Geneve protocol unsupported"
2174                                                   " fields are being used");
2175                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2176                         return rte_flow_error_set
2177                                         (error, ENOTSUP,
2178                                          RTE_FLOW_ERROR_TYPE_ITEM,
2179                                          item,
2180                                          "Unsupported Geneve options length");
2181         }
2182         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2183                 return rte_flow_error_set
2184                                     (error, ENOTSUP,
2185                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2186                                      "Geneve tunnel must be fully defined");
2187         return 0;
2188 }
2189
2190 /**
2191  * Validate MPLS item.
2192  *
2193  * @param[in] dev
2194  *   Pointer to the rte_eth_dev structure.
2195  * @param[in] item
2196  *   Item specification.
2197  * @param[in] item_flags
2198  *   Bit-fields that holds the items detected until now.
2199  * @param[in] prev_layer
2200  *   The protocol layer indicated in previous item.
2201  * @param[out] error
2202  *   Pointer to error structure.
2203  *
2204  * @return
2205  *   0 on success, a negative errno value otherwise and rte_errno is set.
2206  */
2207 int
2208 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2209                              const struct rte_flow_item *item __rte_unused,
2210                              uint64_t item_flags __rte_unused,
2211                              uint64_t prev_layer __rte_unused,
2212                              struct rte_flow_error *error)
2213 {
2214 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2215         const struct rte_flow_item_mpls *mask = item->mask;
2216         struct mlx5_priv *priv = dev->data->dev_private;
2217         int ret;
2218
2219         if (!priv->config.mpls_en)
2220                 return rte_flow_error_set(error, ENOTSUP,
2221                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2222                                           "MPLS not supported or"
2223                                           " disabled in firmware"
2224                                           " configuration.");
2225         /* MPLS over IP, UDP, GRE is allowed */
2226         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2227                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2228                             MLX5_FLOW_LAYER_GRE)))
2229                 return rte_flow_error_set(error, EINVAL,
2230                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2231                                           "protocol filtering not compatible"
2232                                           " with MPLS layer");
2233         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2234         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2235             !(item_flags & MLX5_FLOW_LAYER_GRE))
2236                 return rte_flow_error_set(error, ENOTSUP,
2237                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2238                                           "multiple tunnel layers not"
2239                                           " supported");
2240         if (!mask)
2241                 mask = &rte_flow_item_mpls_mask;
2242         ret = mlx5_flow_item_acceptable
2243                 (item, (const uint8_t *)mask,
2244                  (const uint8_t *)&rte_flow_item_mpls_mask,
2245                  sizeof(struct rte_flow_item_mpls), error);
2246         if (ret < 0)
2247                 return ret;
2248         return 0;
2249 #endif
2250         return rte_flow_error_set(error, ENOTSUP,
2251                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2252                                   "MPLS is not supported by Verbs, please"
2253                                   " update.");
2254 }
2255
2256 /**
2257  * Validate NVGRE item.
2258  *
2259  * @param[in] item
2260  *   Item specification.
2261  * @param[in] item_flags
2262  *   Bit flags to mark detected items.
2263  * @param[in] target_protocol
2264  *   The next protocol in the previous item.
2265  * @param[out] error
2266  *   Pointer to error structure.
2267  *
2268  * @return
2269  *   0 on success, a negative errno value otherwise and rte_errno is set.
2270  */
2271 int
2272 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2273                               uint64_t item_flags,
2274                               uint8_t target_protocol,
2275                               struct rte_flow_error *error)
2276 {
2277         const struct rte_flow_item_nvgre *mask = item->mask;
2278         int ret;
2279
2280         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2281                 return rte_flow_error_set(error, EINVAL,
2282                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2283                                           "protocol filtering not compatible"
2284                                           " with this GRE layer");
2285         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2286                 return rte_flow_error_set(error, ENOTSUP,
2287                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2288                                           "multiple tunnel layers not"
2289                                           " supported");
2290         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2291                 return rte_flow_error_set(error, ENOTSUP,
2292                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2293                                           "L3 Layer is missing");
2294         if (!mask)
2295                 mask = &rte_flow_item_nvgre_mask;
2296         ret = mlx5_flow_item_acceptable
2297                 (item, (const uint8_t *)mask,
2298                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2299                  sizeof(struct rte_flow_item_nvgre), error);
2300         if (ret < 0)
2301                 return ret;
2302         return 0;
2303 }
2304
2305 /* Allocate unique ID for the split Q/RSS subflows. */
2306 static uint32_t
2307 flow_qrss_get_id(struct rte_eth_dev *dev)
2308 {
2309         struct mlx5_priv *priv = dev->data->dev_private;
2310         uint32_t qrss_id, ret;
2311
2312         ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
2313         if (ret)
2314                 return 0;
2315         assert(qrss_id);
2316         return qrss_id;
2317 }
2318
2319 /* Free unique ID for the split Q/RSS subflows. */
2320 static void
2321 flow_qrss_free_id(struct rte_eth_dev *dev,  uint32_t qrss_id)
2322 {
2323         struct mlx5_priv *priv = dev->data->dev_private;
2324
2325         if (qrss_id)
2326                 mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
2327 }
2328
2329 /**
2330  * Release resource related QUEUE/RSS action split.
2331  *
2332  * @param dev
2333  *   Pointer to Ethernet device.
2334  * @param flow
2335  *   Flow to release id's from.
2336  */
2337 static void
2338 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
2339                              struct rte_flow *flow)
2340 {
2341         struct mlx5_flow *dev_flow;
2342
2343         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
2344                 if (dev_flow->qrss_id)
2345                         flow_qrss_free_id(dev, dev_flow->qrss_id);
2346 }
2347
2348 static int
2349 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
2350                    const struct rte_flow_attr *attr __rte_unused,
2351                    const struct rte_flow_item items[] __rte_unused,
2352                    const struct rte_flow_action actions[] __rte_unused,
2353                    bool external __rte_unused,
2354                    struct rte_flow_error *error)
2355 {
2356         return rte_flow_error_set(error, ENOTSUP,
2357                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2358 }
2359
2360 static struct mlx5_flow *
2361 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
2362                   const struct rte_flow_item items[] __rte_unused,
2363                   const struct rte_flow_action actions[] __rte_unused,
2364                   struct rte_flow_error *error)
2365 {
2366         rte_flow_error_set(error, ENOTSUP,
2367                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2368         return NULL;
2369 }
2370
2371 static int
2372 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
2373                     struct mlx5_flow *dev_flow __rte_unused,
2374                     const struct rte_flow_attr *attr __rte_unused,
2375                     const struct rte_flow_item items[] __rte_unused,
2376                     const struct rte_flow_action actions[] __rte_unused,
2377                     struct rte_flow_error *error)
2378 {
2379         return rte_flow_error_set(error, ENOTSUP,
2380                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2381 }
2382
2383 static int
2384 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
2385                 struct rte_flow *flow __rte_unused,
2386                 struct rte_flow_error *error)
2387 {
2388         return rte_flow_error_set(error, ENOTSUP,
2389                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2390 }
2391
2392 static void
2393 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
2394                  struct rte_flow *flow __rte_unused)
2395 {
2396 }
2397
2398 static void
2399 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
2400                   struct rte_flow *flow __rte_unused)
2401 {
2402 }
2403
2404 static int
2405 flow_null_query(struct rte_eth_dev *dev __rte_unused,
2406                 struct rte_flow *flow __rte_unused,
2407                 const struct rte_flow_action *actions __rte_unused,
2408                 void *data __rte_unused,
2409                 struct rte_flow_error *error)
2410 {
2411         return rte_flow_error_set(error, ENOTSUP,
2412                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2413 }
2414
2415 /* Void driver to protect from null pointer reference. */
2416 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
2417         .validate = flow_null_validate,
2418         .prepare = flow_null_prepare,
2419         .translate = flow_null_translate,
2420         .apply = flow_null_apply,
2421         .remove = flow_null_remove,
2422         .destroy = flow_null_destroy,
2423         .query = flow_null_query,
2424 };
2425
2426 /**
2427  * Select flow driver type according to flow attributes and device
2428  * configuration.
2429  *
2430  * @param[in] dev
2431  *   Pointer to the dev structure.
2432  * @param[in] attr
2433  *   Pointer to the flow attributes.
2434  *
2435  * @return
2436  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
2437  */
2438 static enum mlx5_flow_drv_type
2439 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
2440 {
2441         struct mlx5_priv *priv = dev->data->dev_private;
2442         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
2443
2444         if (attr->transfer && priv->config.dv_esw_en)
2445                 type = MLX5_FLOW_TYPE_DV;
2446         if (!attr->transfer)
2447                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
2448                                                  MLX5_FLOW_TYPE_VERBS;
2449         return type;
2450 }
2451
2452 #define flow_get_drv_ops(type) flow_drv_ops[type]
2453
2454 /**
2455  * Flow driver validation API. This abstracts calling driver specific functions.
2456  * The type of flow driver is determined according to flow attributes.
2457  *
2458  * @param[in] dev
2459  *   Pointer to the dev structure.
2460  * @param[in] attr
2461  *   Pointer to the flow attributes.
2462  * @param[in] items
2463  *   Pointer to the list of items.
2464  * @param[in] actions
2465  *   Pointer to the list of actions.
2466  * @param[in] external
2467  *   This flow rule is created by request external to PMD.
2468  * @param[out] error
2469  *   Pointer to the error structure.
2470  *
2471  * @return
2472  *   0 on success, a negative errno value otherwise and rte_errno is set.
2473  */
2474 static inline int
2475 flow_drv_validate(struct rte_eth_dev *dev,
2476                   const struct rte_flow_attr *attr,
2477                   const struct rte_flow_item items[],
2478                   const struct rte_flow_action actions[],
2479                   bool external, struct rte_flow_error *error)
2480 {
2481         const struct mlx5_flow_driver_ops *fops;
2482         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
2483
2484         fops = flow_get_drv_ops(type);
2485         return fops->validate(dev, attr, items, actions, external, error);
2486 }
2487
2488 /**
2489  * Flow driver preparation API. This abstracts calling driver specific
2490  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2491  * calculates the size of memory required for device flow, allocates the memory,
2492  * initializes the device flow and returns the pointer.
2493  *
2494  * @note
2495  *   This function initializes device flow structure such as dv or verbs in
2496  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2497  *   rest. For example, adding returning device flow to flow->dev_flow list and
2498  *   setting backward reference to the flow should be done out of this function.
2499  *   layers field is not filled either.
2500  *
2501  * @param[in] attr
2502  *   Pointer to the flow attributes.
2503  * @param[in] items
2504  *   Pointer to the list of items.
2505  * @param[in] actions
2506  *   Pointer to the list of actions.
2507  * @param[out] error
2508  *   Pointer to the error structure.
2509  *
2510  * @return
2511  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2512  */
2513 static inline struct mlx5_flow *
2514 flow_drv_prepare(const struct rte_flow *flow,
2515                  const struct rte_flow_attr *attr,
2516                  const struct rte_flow_item items[],
2517                  const struct rte_flow_action actions[],
2518                  struct rte_flow_error *error)
2519 {
2520         const struct mlx5_flow_driver_ops *fops;
2521         enum mlx5_flow_drv_type type = flow->drv_type;
2522
2523         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2524         fops = flow_get_drv_ops(type);
2525         return fops->prepare(attr, items, actions, error);
2526 }
2527
2528 /**
2529  * Flow driver translation API. This abstracts calling driver specific
2530  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2531  * translates a generic flow into a driver flow. flow_drv_prepare() must
2532  * precede.
2533  *
2534  * @note
2535  *   dev_flow->layers could be filled as a result of parsing during translation
2536  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2537  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2538  *   flow->actions could be overwritten even though all the expanded dev_flows
2539  *   have the same actions.
2540  *
2541  * @param[in] dev
2542  *   Pointer to the rte dev structure.
2543  * @param[in, out] dev_flow
2544  *   Pointer to the mlx5 flow.
2545  * @param[in] attr
2546  *   Pointer to the flow attributes.
2547  * @param[in] items
2548  *   Pointer to the list of items.
2549  * @param[in] actions
2550  *   Pointer to the list of actions.
2551  * @param[out] error
2552  *   Pointer to the error structure.
2553  *
2554  * @return
2555  *   0 on success, a negative errno value otherwise and rte_errno is set.
2556  */
2557 static inline int
2558 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2559                    const struct rte_flow_attr *attr,
2560                    const struct rte_flow_item items[],
2561                    const struct rte_flow_action actions[],
2562                    struct rte_flow_error *error)
2563 {
2564         const struct mlx5_flow_driver_ops *fops;
2565         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2566
2567         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2568         fops = flow_get_drv_ops(type);
2569         return fops->translate(dev, dev_flow, attr, items, actions, error);
2570 }
2571
2572 /**
2573  * Flow driver apply API. This abstracts calling driver specific functions.
2574  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2575  * translated driver flows on to device. flow_drv_translate() must precede.
2576  *
2577  * @param[in] dev
2578  *   Pointer to Ethernet device structure.
2579  * @param[in, out] flow
2580  *   Pointer to flow structure.
2581  * @param[out] error
2582  *   Pointer to error structure.
2583  *
2584  * @return
2585  *   0 on success, a negative errno value otherwise and rte_errno is set.
2586  */
2587 static inline int
2588 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2589                struct rte_flow_error *error)
2590 {
2591         const struct mlx5_flow_driver_ops *fops;
2592         enum mlx5_flow_drv_type type = flow->drv_type;
2593
2594         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2595         fops = flow_get_drv_ops(type);
2596         return fops->apply(dev, flow, error);
2597 }
2598
2599 /**
2600  * Flow driver remove API. This abstracts calling driver specific functions.
2601  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2602  * on device. All the resources of the flow should be freed by calling
2603  * flow_drv_destroy().
2604  *
2605  * @param[in] dev
2606  *   Pointer to Ethernet device.
2607  * @param[in, out] flow
2608  *   Pointer to flow structure.
2609  */
2610 static inline void
2611 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2612 {
2613         const struct mlx5_flow_driver_ops *fops;
2614         enum mlx5_flow_drv_type type = flow->drv_type;
2615
2616         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2617         fops = flow_get_drv_ops(type);
2618         fops->remove(dev, flow);
2619 }
2620
2621 /**
2622  * Flow driver destroy API. This abstracts calling driver specific functions.
2623  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2624  * on device and releases resources of the flow.
2625  *
2626  * @param[in] dev
2627  *   Pointer to Ethernet device.
2628  * @param[in, out] flow
2629  *   Pointer to flow structure.
2630  */
2631 static inline void
2632 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2633 {
2634         const struct mlx5_flow_driver_ops *fops;
2635         enum mlx5_flow_drv_type type = flow->drv_type;
2636
2637         flow_mreg_split_qrss_release(dev, flow);
2638         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2639         fops = flow_get_drv_ops(type);
2640         fops->destroy(dev, flow);
2641 }
2642
2643 /**
2644  * Validate a flow supported by the NIC.
2645  *
2646  * @see rte_flow_validate()
2647  * @see rte_flow_ops
2648  */
2649 int
2650 mlx5_flow_validate(struct rte_eth_dev *dev,
2651                    const struct rte_flow_attr *attr,
2652                    const struct rte_flow_item items[],
2653                    const struct rte_flow_action actions[],
2654                    struct rte_flow_error *error)
2655 {
2656         int ret;
2657
2658         ret = flow_drv_validate(dev, attr, items, actions, true, error);
2659         if (ret < 0)
2660                 return ret;
2661         return 0;
2662 }
2663
2664 /**
2665  * Get port id item from the item list.
2666  *
2667  * @param[in] item
2668  *   Pointer to the list of items.
2669  *
2670  * @return
2671  *   Pointer to the port id item if exist, else return NULL.
2672  */
2673 static const struct rte_flow_item *
2674 find_port_id_item(const struct rte_flow_item *item)
2675 {
2676         assert(item);
2677         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2678                 if (item->type == RTE_FLOW_ITEM_TYPE_PORT_ID)
2679                         return item;
2680         }
2681         return NULL;
2682 }
2683
2684 /**
2685  * Get RSS action from the action list.
2686  *
2687  * @param[in] actions
2688  *   Pointer to the list of actions.
2689  *
2690  * @return
2691  *   Pointer to the RSS action if exist, else return NULL.
2692  */
2693 static const struct rte_flow_action_rss*
2694 flow_get_rss_action(const struct rte_flow_action actions[])
2695 {
2696         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2697                 switch (actions->type) {
2698                 case RTE_FLOW_ACTION_TYPE_RSS:
2699                         return (const struct rte_flow_action_rss *)
2700                                actions->conf;
2701                 default:
2702                         break;
2703                 }
2704         }
2705         return NULL;
2706 }
2707
2708 static unsigned int
2709 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2710 {
2711         const struct rte_flow_item *item;
2712         unsigned int has_vlan = 0;
2713
2714         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2715                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2716                         has_vlan = 1;
2717                         break;
2718                 }
2719         }
2720         if (has_vlan)
2721                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2722                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2723         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2724                                MLX5_EXPANSION_ROOT_OUTER;
2725 }
2726
2727 /**
2728  * Get QUEUE/RSS action from the action list.
2729  *
2730  * @param[in] actions
2731  *   Pointer to the list of actions.
2732  * @param[out] qrss
2733  *   Pointer to the return pointer.
2734  * @param[out] qrss_type
2735  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
2736  *   if no QUEUE/RSS is found.
2737  *
2738  * @return
2739  *   Total number of actions.
2740  */
2741 static int
2742 flow_parse_qrss_action(const struct rte_flow_action actions[],
2743                        const struct rte_flow_action **qrss)
2744 {
2745         int actions_n = 0;
2746
2747         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2748                 switch (actions->type) {
2749                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2750                 case RTE_FLOW_ACTION_TYPE_RSS:
2751                         *qrss = actions;
2752                         break;
2753                 default:
2754                         break;
2755                 }
2756                 actions_n++;
2757         }
2758         /* Count RTE_FLOW_ACTION_TYPE_END. */
2759         return actions_n + 1;
2760 }
2761
2762 /**
2763  * Check meter action from the action list.
2764  *
2765  * @param[in] actions
2766  *   Pointer to the list of actions.
2767  * @param[out] mtr
2768  *   Pointer to the meter exist flag.
2769  *
2770  * @return
2771  *   Total number of actions.
2772  */
2773 static int
2774 flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
2775 {
2776         int actions_n = 0;
2777
2778         assert(mtr);
2779         *mtr = 0;
2780         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2781                 switch (actions->type) {
2782                 case RTE_FLOW_ACTION_TYPE_METER:
2783                         *mtr = 1;
2784                         break;
2785                 default:
2786                         break;
2787                 }
2788                 actions_n++;
2789         }
2790         /* Count RTE_FLOW_ACTION_TYPE_END. */
2791         return actions_n + 1;
2792 }
2793
2794 /**
2795  * Check if the flow should be splited due to hairpin.
2796  * The reason for the split is that in current HW we can't
2797  * support encap on Rx, so if a flow have encap we move it
2798  * to Tx.
2799  *
2800  * @param dev
2801  *   Pointer to Ethernet device.
2802  * @param[in] attr
2803  *   Flow rule attributes.
2804  * @param[in] actions
2805  *   Associated actions (list terminated by the END action).
2806  *
2807  * @return
2808  *   > 0 the number of actions and the flow should be split,
2809  *   0 when no split required.
2810  */
2811 static int
2812 flow_check_hairpin_split(struct rte_eth_dev *dev,
2813                          const struct rte_flow_attr *attr,
2814                          const struct rte_flow_action actions[])
2815 {
2816         int queue_action = 0;
2817         int action_n = 0;
2818         int encap = 0;
2819         const struct rte_flow_action_queue *queue;
2820         const struct rte_flow_action_rss *rss;
2821         const struct rte_flow_action_raw_encap *raw_encap;
2822
2823         if (!attr->ingress)
2824                 return 0;
2825         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2826                 switch (actions->type) {
2827                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2828                         queue = actions->conf;
2829                         if (queue == NULL)
2830                                 return 0;
2831                         if (mlx5_rxq_get_type(dev, queue->index) !=
2832                             MLX5_RXQ_TYPE_HAIRPIN)
2833                                 return 0;
2834                         queue_action = 1;
2835                         action_n++;
2836                         break;
2837                 case RTE_FLOW_ACTION_TYPE_RSS:
2838                         rss = actions->conf;
2839                         if (rss == NULL || rss->queue_num == 0)
2840                                 return 0;
2841                         if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
2842                             MLX5_RXQ_TYPE_HAIRPIN)
2843                                 return 0;
2844                         queue_action = 1;
2845                         action_n++;
2846                         break;
2847                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2848                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2849                         encap = 1;
2850                         action_n++;
2851                         break;
2852                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2853                         raw_encap = actions->conf;
2854                         if (raw_encap->size >
2855                             (sizeof(struct rte_flow_item_eth) +
2856                              sizeof(struct rte_flow_item_ipv4)))
2857                                 encap = 1;
2858                         action_n++;
2859                         break;
2860                 default:
2861                         action_n++;
2862                         break;
2863                 }
2864         }
2865         if (encap == 1 && queue_action)
2866                 return action_n;
2867         return 0;
2868 }
2869
2870 /* Declare flow create/destroy prototype in advance. */
2871 static struct rte_flow *
2872 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2873                  const struct rte_flow_attr *attr,
2874                  const struct rte_flow_item items[],
2875                  const struct rte_flow_action actions[],
2876                  bool external, struct rte_flow_error *error);
2877
2878 static void
2879 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2880                   struct rte_flow *flow);
2881
2882 /**
2883  * Add a flow of copying flow metadata registers in RX_CP_TBL.
2884  *
2885  * As mark_id is unique, if there's already a registered flow for the mark_id,
2886  * return by increasing the reference counter of the resource. Otherwise, create
2887  * the resource (mcp_res) and flow.
2888  *
2889  * Flow looks like,
2890  *   - If ingress port is ANY and reg_c[1] is mark_id,
2891  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
2892  *
2893  * For default flow (zero mark_id), flow is like,
2894  *   - If ingress port is ANY,
2895  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
2896  *
2897  * @param dev
2898  *   Pointer to Ethernet device.
2899  * @param mark_id
2900  *   ID of MARK action, zero means default flow for META.
2901  * @param[out] error
2902  *   Perform verbose error reporting if not NULL.
2903  *
2904  * @return
2905  *   Associated resource on success, NULL otherwise and rte_errno is set.
2906  */
2907 static struct mlx5_flow_mreg_copy_resource *
2908 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
2909                           struct rte_flow_error *error)
2910 {
2911         struct mlx5_priv *priv = dev->data->dev_private;
2912         struct rte_flow_attr attr = {
2913                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
2914                 .ingress = 1,
2915         };
2916         struct mlx5_rte_flow_item_tag tag_spec = {
2917                 .data = mark_id,
2918         };
2919         struct rte_flow_item items[] = {
2920                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
2921         };
2922         struct rte_flow_action_mark ftag = {
2923                 .id = mark_id,
2924         };
2925         struct mlx5_flow_action_copy_mreg cp_mreg = {
2926                 .dst = REG_B,
2927                 .src = 0,
2928         };
2929         struct rte_flow_action_jump jump = {
2930                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
2931         };
2932         struct rte_flow_action actions[] = {
2933                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
2934         };
2935         struct mlx5_flow_mreg_copy_resource *mcp_res;
2936         int ret;
2937
2938         /* Fill the register fileds in the flow. */
2939         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
2940         if (ret < 0)
2941                 return NULL;
2942         tag_spec.id = ret;
2943         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
2944         if (ret < 0)
2945                 return NULL;
2946         cp_mreg.src = ret;
2947         /* Check if already registered. */
2948         assert(priv->mreg_cp_tbl);
2949         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
2950         if (mcp_res) {
2951                 /* For non-default rule. */
2952                 if (mark_id != MLX5_DEFAULT_COPY_ID)
2953                         mcp_res->refcnt++;
2954                 assert(mark_id != MLX5_DEFAULT_COPY_ID || mcp_res->refcnt == 1);
2955                 return mcp_res;
2956         }
2957         /* Provide the full width of FLAG specific value. */
2958         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
2959                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
2960         /* Build a new flow. */
2961         if (mark_id != MLX5_DEFAULT_COPY_ID) {
2962                 items[0] = (struct rte_flow_item){
2963                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
2964                         .spec = &tag_spec,
2965                 };
2966                 items[1] = (struct rte_flow_item){
2967                         .type = RTE_FLOW_ITEM_TYPE_END,
2968                 };
2969                 actions[0] = (struct rte_flow_action){
2970                         .type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
2971                         .conf = &ftag,
2972                 };
2973                 actions[1] = (struct rte_flow_action){
2974                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
2975                         .conf = &cp_mreg,
2976                 };
2977                 actions[2] = (struct rte_flow_action){
2978                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
2979                         .conf = &jump,
2980                 };
2981                 actions[3] = (struct rte_flow_action){
2982                         .type = RTE_FLOW_ACTION_TYPE_END,
2983                 };
2984         } else {
2985                 /* Default rule, wildcard match. */
2986                 attr.priority = MLX5_FLOW_PRIO_RSVD;
2987                 items[0] = (struct rte_flow_item){
2988                         .type = RTE_FLOW_ITEM_TYPE_END,
2989                 };
2990                 actions[0] = (struct rte_flow_action){
2991                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
2992                         .conf = &cp_mreg,
2993                 };
2994                 actions[1] = (struct rte_flow_action){
2995                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
2996                         .conf = &jump,
2997                 };
2998                 actions[2] = (struct rte_flow_action){
2999                         .type = RTE_FLOW_ACTION_TYPE_END,
3000                 };
3001         }
3002         /* Build a new entry. */
3003         mcp_res = rte_zmalloc(__func__, sizeof(*mcp_res), 0);
3004         if (!mcp_res) {
3005                 rte_errno = ENOMEM;
3006                 return NULL;
3007         }
3008         /*
3009          * The copy Flows are not included in any list. There
3010          * ones are referenced from other Flows and can not
3011          * be applied, removed, deleted in ardbitrary order
3012          * by list traversing.
3013          */
3014         mcp_res->flow = flow_list_create(dev, NULL, &attr, items,
3015                                          actions, false, error);
3016         if (!mcp_res->flow)
3017                 goto error;
3018         mcp_res->refcnt++;
3019         mcp_res->hlist_ent.key = mark_id;
3020         ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
3021                                 &mcp_res->hlist_ent);
3022         assert(!ret);
3023         if (ret)
3024                 goto error;
3025         return mcp_res;
3026 error:
3027         if (mcp_res->flow)
3028                 flow_list_destroy(dev, NULL, mcp_res->flow);
3029         rte_free(mcp_res);
3030         return NULL;
3031 }
3032
3033 /**
3034  * Release flow in RX_CP_TBL.
3035  *
3036  * @param dev
3037  *   Pointer to Ethernet device.
3038  * @flow
3039  *   Parent flow for wich copying is provided.
3040  */
3041 static void
3042 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
3043                           struct rte_flow *flow)
3044 {
3045         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3046         struct mlx5_priv *priv = dev->data->dev_private;
3047
3048         if (!mcp_res || !priv->mreg_cp_tbl)
3049                 return;
3050         if (flow->copy_applied) {
3051                 assert(mcp_res->appcnt);
3052                 flow->copy_applied = 0;
3053                 --mcp_res->appcnt;
3054                 if (!mcp_res->appcnt)
3055                         flow_drv_remove(dev, mcp_res->flow);
3056         }
3057         /*
3058          * We do not check availability of metadata registers here,
3059          * because copy resources are not allocated in this case.
3060          */
3061         if (--mcp_res->refcnt)
3062                 return;
3063         assert(mcp_res->flow);
3064         flow_list_destroy(dev, NULL, mcp_res->flow);
3065         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3066         rte_free(mcp_res);
3067         flow->mreg_copy = NULL;
3068 }
3069
3070 /**
3071  * Start flow in RX_CP_TBL.
3072  *
3073  * @param dev
3074  *   Pointer to Ethernet device.
3075  * @flow
3076  *   Parent flow for wich copying is provided.
3077  *
3078  * @return
3079  *   0 on success, a negative errno value otherwise and rte_errno is set.
3080  */
3081 static int
3082 flow_mreg_start_copy_action(struct rte_eth_dev *dev,
3083                             struct rte_flow *flow)
3084 {
3085         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3086         int ret;
3087
3088         if (!mcp_res || flow->copy_applied)
3089                 return 0;
3090         if (!mcp_res->appcnt) {
3091                 ret = flow_drv_apply(dev, mcp_res->flow, NULL);
3092                 if (ret)
3093                         return ret;
3094         }
3095         ++mcp_res->appcnt;
3096         flow->copy_applied = 1;
3097         return 0;
3098 }
3099
3100 /**
3101  * Stop flow in RX_CP_TBL.
3102  *
3103  * @param dev
3104  *   Pointer to Ethernet device.
3105  * @flow
3106  *   Parent flow for wich copying is provided.
3107  */
3108 static void
3109 flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
3110                            struct rte_flow *flow)
3111 {
3112         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3113
3114         if (!mcp_res || !flow->copy_applied)
3115                 return;
3116         assert(mcp_res->appcnt);
3117         --mcp_res->appcnt;
3118         flow->copy_applied = 0;
3119         if (!mcp_res->appcnt)
3120                 flow_drv_remove(dev, mcp_res->flow);
3121 }
3122
3123 /**
3124  * Remove the default copy action from RX_CP_TBL.
3125  *
3126  * @param dev
3127  *   Pointer to Ethernet device.
3128  */
3129 static void
3130 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
3131 {
3132         struct mlx5_flow_mreg_copy_resource *mcp_res;
3133         struct mlx5_priv *priv = dev->data->dev_private;
3134
3135         /* Check if default flow is registered. */
3136         if (!priv->mreg_cp_tbl)
3137                 return;
3138         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
3139                                             MLX5_DEFAULT_COPY_ID);
3140         if (!mcp_res)
3141                 return;
3142         assert(mcp_res->flow);
3143         flow_list_destroy(dev, NULL, mcp_res->flow);
3144         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3145         rte_free(mcp_res);
3146 }
3147
3148 /**
3149  * Add the default copy action in in RX_CP_TBL.
3150  *
3151  * @param dev
3152  *   Pointer to Ethernet device.
3153  * @param[out] error
3154  *   Perform verbose error reporting if not NULL.
3155  *
3156  * @return
3157  *   0 for success, negative value otherwise and rte_errno is set.
3158  */
3159 static int
3160 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
3161                                   struct rte_flow_error *error)
3162 {
3163         struct mlx5_priv *priv = dev->data->dev_private;
3164         struct mlx5_flow_mreg_copy_resource *mcp_res;
3165
3166         /* Check whether extensive metadata feature is engaged. */
3167         if (!priv->config.dv_flow_en ||
3168             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3169             !mlx5_flow_ext_mreg_supported(dev) ||
3170             !priv->sh->dv_regc0_mask)
3171                 return 0;
3172         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
3173         if (!mcp_res)
3174                 return -rte_errno;
3175         return 0;
3176 }
3177
3178 /**
3179  * Add a flow of copying flow metadata registers in RX_CP_TBL.
3180  *
3181  * All the flow having Q/RSS action should be split by
3182  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
3183  * performs the following,
3184  *   - CQE->flow_tag := reg_c[1] (MARK)
3185  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3186  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
3187  * but there should be a flow per each MARK ID set by MARK action.
3188  *
3189  * For the aforementioned reason, if there's a MARK action in flow's action
3190  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
3191  * the MARK ID to CQE's flow_tag like,
3192  *   - If reg_c[1] is mark_id,
3193  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3194  *
3195  * For SET_META action which stores value in reg_c[0], as the destination is
3196  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
3197  * MARK ID means the default flow. The default flow looks like,
3198  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3199  *
3200  * @param dev
3201  *   Pointer to Ethernet device.
3202  * @param flow
3203  *   Pointer to flow structure.
3204  * @param[in] actions
3205  *   Pointer to the list of actions.
3206  * @param[out] error
3207  *   Perform verbose error reporting if not NULL.
3208  *
3209  * @return
3210  *   0 on success, negative value otherwise and rte_errno is set.
3211  */
3212 static int
3213 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
3214                             struct rte_flow *flow,
3215                             const struct rte_flow_action *actions,
3216                             struct rte_flow_error *error)
3217 {
3218         struct mlx5_priv *priv = dev->data->dev_private;
3219         struct mlx5_dev_config *config = &priv->config;
3220         struct mlx5_flow_mreg_copy_resource *mcp_res;
3221         const struct rte_flow_action_mark *mark;
3222
3223         /* Check whether extensive metadata feature is engaged. */
3224         if (!config->dv_flow_en ||
3225             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3226             !mlx5_flow_ext_mreg_supported(dev) ||
3227             !priv->sh->dv_regc0_mask)
3228                 return 0;
3229         /* Find MARK action. */
3230         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3231                 switch (actions->type) {
3232                 case RTE_FLOW_ACTION_TYPE_FLAG:
3233                         mcp_res = flow_mreg_add_copy_action
3234                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
3235                         if (!mcp_res)
3236                                 return -rte_errno;
3237                         flow->mreg_copy = mcp_res;
3238                         if (dev->data->dev_started) {
3239                                 mcp_res->appcnt++;
3240                                 flow->copy_applied = 1;
3241                         }
3242                         return 0;
3243                 case RTE_FLOW_ACTION_TYPE_MARK:
3244                         mark = (const struct rte_flow_action_mark *)
3245                                 actions->conf;
3246                         mcp_res =
3247                                 flow_mreg_add_copy_action(dev, mark->id, error);
3248                         if (!mcp_res)
3249                                 return -rte_errno;
3250                         flow->mreg_copy = mcp_res;
3251                         if (dev->data->dev_started) {
3252                                 mcp_res->appcnt++;
3253                                 flow->copy_applied = 1;
3254                         }
3255                         return 0;
3256                 default:
3257                         break;
3258                 }
3259         }
3260         return 0;
3261 }
3262
3263 #define MLX5_MAX_SPLIT_ACTIONS 24
3264 #define MLX5_MAX_SPLIT_ITEMS 24
3265
3266 /**
3267  * Split the hairpin flow.
3268  * Since HW can't support encap on Rx we move the encap to Tx.
3269  * If the count action is after the encap then we also
3270  * move the count action. in this case the count will also measure
3271  * the outer bytes.
3272  *
3273  * @param dev
3274  *   Pointer to Ethernet device.
3275  * @param[in] actions
3276  *   Associated actions (list terminated by the END action).
3277  * @param[out] actions_rx
3278  *   Rx flow actions.
3279  * @param[out] actions_tx
3280  *   Tx flow actions..
3281  * @param[out] pattern_tx
3282  *   The pattern items for the Tx flow.
3283  * @param[out] flow_id
3284  *   The flow ID connected to this flow.
3285  *
3286  * @return
3287  *   0 on success.
3288  */
3289 static int
3290 flow_hairpin_split(struct rte_eth_dev *dev,
3291                    const struct rte_flow_action actions[],
3292                    struct rte_flow_action actions_rx[],
3293                    struct rte_flow_action actions_tx[],
3294                    struct rte_flow_item pattern_tx[],
3295                    uint32_t *flow_id)
3296 {
3297         struct mlx5_priv *priv = dev->data->dev_private;
3298         const struct rte_flow_action_raw_encap *raw_encap;
3299         const struct rte_flow_action_raw_decap *raw_decap;
3300         struct mlx5_rte_flow_action_set_tag *set_tag;
3301         struct rte_flow_action *tag_action;
3302         struct mlx5_rte_flow_item_tag *tag_item;
3303         struct rte_flow_item *item;
3304         char *addr;
3305         int encap = 0;
3306
3307         mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
3308         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3309                 switch (actions->type) {
3310                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3311                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3312                         rte_memcpy(actions_tx, actions,
3313                                sizeof(struct rte_flow_action));
3314                         actions_tx++;
3315                         break;
3316                 case RTE_FLOW_ACTION_TYPE_COUNT:
3317                         if (encap) {
3318                                 rte_memcpy(actions_tx, actions,
3319                                            sizeof(struct rte_flow_action));
3320                                 actions_tx++;
3321                         } else {
3322                                 rte_memcpy(actions_rx, actions,
3323                                            sizeof(struct rte_flow_action));
3324                                 actions_rx++;
3325                         }
3326                         break;
3327                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3328                         raw_encap = actions->conf;
3329                         if (raw_encap->size >
3330                             (sizeof(struct rte_flow_item_eth) +
3331                              sizeof(struct rte_flow_item_ipv4))) {
3332                                 memcpy(actions_tx, actions,
3333                                        sizeof(struct rte_flow_action));
3334                                 actions_tx++;
3335                                 encap = 1;
3336                         } else {
3337                                 rte_memcpy(actions_rx, actions,
3338                                            sizeof(struct rte_flow_action));
3339                                 actions_rx++;
3340                         }
3341                         break;
3342                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3343                         raw_decap = actions->conf;
3344                         if (raw_decap->size <
3345                             (sizeof(struct rte_flow_item_eth) +
3346                              sizeof(struct rte_flow_item_ipv4))) {
3347                                 memcpy(actions_tx, actions,
3348                                        sizeof(struct rte_flow_action));
3349                                 actions_tx++;
3350                         } else {
3351                                 rte_memcpy(actions_rx, actions,
3352                                            sizeof(struct rte_flow_action));
3353                                 actions_rx++;
3354                         }
3355                         break;
3356                 default:
3357                         rte_memcpy(actions_rx, actions,
3358                                    sizeof(struct rte_flow_action));
3359                         actions_rx++;
3360                         break;
3361                 }
3362         }
3363         /* Add set meta action and end action for the Rx flow. */
3364         tag_action = actions_rx;
3365         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3366         actions_rx++;
3367         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
3368         actions_rx++;
3369         set_tag = (void *)actions_rx;
3370         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
3371         assert(set_tag->id > REG_NONE);
3372         set_tag->data = *flow_id;
3373         tag_action->conf = set_tag;
3374         /* Create Tx item list. */
3375         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
3376         addr = (void *)&pattern_tx[2];
3377         item = pattern_tx;
3378         item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3379         tag_item = (void *)addr;
3380         tag_item->data = *flow_id;
3381         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
3382         assert(set_tag->id > REG_NONE);
3383         item->spec = tag_item;
3384         addr += sizeof(struct mlx5_rte_flow_item_tag);
3385         tag_item = (void *)addr;
3386         tag_item->data = UINT32_MAX;
3387         tag_item->id = UINT16_MAX;
3388         item->mask = tag_item;
3389         addr += sizeof(struct mlx5_rte_flow_item_tag);
3390         item->last = NULL;
3391         item++;
3392         item->type = RTE_FLOW_ITEM_TYPE_END;
3393         return 0;
3394 }
3395
3396 /**
3397  * The last stage of splitting chain, just creates the subflow
3398  * without any modification.
3399  *
3400  * @param dev
3401  *   Pointer to Ethernet device.
3402  * @param[in] flow
3403  *   Parent flow structure pointer.
3404  * @param[in, out] sub_flow
3405  *   Pointer to return the created subflow, may be NULL.
3406  * @param[in] attr
3407  *   Flow rule attributes.
3408  * @param[in] items
3409  *   Pattern specification (list terminated by the END pattern item).
3410  * @param[in] actions
3411  *   Associated actions (list terminated by the END action).
3412  * @param[in] external
3413  *   This flow rule is created by request external to PMD.
3414  * @param[out] error
3415  *   Perform verbose error reporting if not NULL.
3416  * @return
3417  *   0 on success, negative value otherwise
3418  */
3419 static int
3420 flow_create_split_inner(struct rte_eth_dev *dev,
3421                         struct rte_flow *flow,
3422                         struct mlx5_flow **sub_flow,
3423                         const struct rte_flow_attr *attr,
3424                         const struct rte_flow_item items[],
3425                         const struct rte_flow_action actions[],
3426                         bool external, struct rte_flow_error *error)
3427 {
3428         struct mlx5_flow *dev_flow;
3429
3430         dev_flow = flow_drv_prepare(flow, attr, items, actions, error);
3431         if (!dev_flow)
3432                 return -rte_errno;
3433         dev_flow->flow = flow;
3434         dev_flow->external = external;
3435         /* Subflow object was created, we must include one in the list. */
3436         LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
3437         if (sub_flow)
3438                 *sub_flow = dev_flow;
3439         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
3440 }
3441
3442 /**
3443  * Split the meter flow.
3444  *
3445  * As meter flow will split to three sub flow, other than meter
3446  * action, the other actions make sense to only meter accepts
3447  * the packet. If it need to be dropped, no other additional
3448  * actions should be take.
3449  *
3450  * One kind of special action which decapsulates the L3 tunnel
3451  * header will be in the prefix sub flow, as not to take the
3452  * L3 tunnel header into account.
3453  *
3454  * @param dev
3455  *   Pointer to Ethernet device.
3456  * @param[in] actions
3457  *   Associated actions (list terminated by the END action).
3458  * @param[out] actions_sfx
3459  *   Suffix flow actions.
3460  * @param[out] actions_pre
3461  *   Prefix flow actions.
3462  * @param[out] pattern_sfx
3463  *   The pattern items for the suffix flow.
3464  * @param[out] tag_sfx
3465  *   Pointer to suffix flow tag.
3466  *
3467  * @return
3468  *   0 on success.
3469  */
3470 static int
3471 flow_meter_split_prep(struct rte_eth_dev *dev,
3472                  const struct rte_flow_action actions[],
3473                  struct rte_flow_action actions_sfx[],
3474                  struct rte_flow_action actions_pre[])
3475 {
3476         struct rte_flow_action *tag_action;
3477         struct mlx5_rte_flow_action_set_tag *set_tag;
3478         struct rte_flow_error error;
3479         const struct rte_flow_action_raw_encap *raw_encap;
3480         const struct rte_flow_action_raw_decap *raw_decap;
3481         uint32_t tag_id;
3482
3483         /* Add the extra tag action first. */
3484         tag_action = actions_pre;
3485         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3486         actions_pre++;
3487         /* Prepare the actions for prefix and suffix flow. */
3488         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3489                 switch (actions->type) {
3490                 case RTE_FLOW_ACTION_TYPE_METER:
3491                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3492                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3493                         memcpy(actions_pre, actions,
3494                                sizeof(struct rte_flow_action));
3495                         actions_pre++;
3496                         break;
3497                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3498                         raw_encap = actions->conf;
3499                         if (raw_encap->size >
3500                             (sizeof(struct rte_flow_item_eth) +
3501                              sizeof(struct rte_flow_item_ipv4))) {
3502                                 memcpy(actions_sfx, actions,
3503                                        sizeof(struct rte_flow_action));
3504                                 actions_sfx++;
3505                         } else {
3506                                 rte_memcpy(actions_pre, actions,
3507                                            sizeof(struct rte_flow_action));
3508                                 actions_pre++;
3509                         }
3510                         break;
3511                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3512                         raw_decap = actions->conf;
3513                         /* Size 0 decap means 50 bytes as vxlan decap. */
3514                         if (raw_decap->size && (raw_decap->size <
3515                             (sizeof(struct rte_flow_item_eth) +
3516                              sizeof(struct rte_flow_item_ipv4)))) {
3517                                 memcpy(actions_sfx, actions,
3518                                        sizeof(struct rte_flow_action));
3519                                 actions_sfx++;
3520                         } else {
3521                                 rte_memcpy(actions_pre, actions,
3522                                            sizeof(struct rte_flow_action));
3523                                 actions_pre++;
3524                         }
3525                         break;
3526                 default:
3527                         memcpy(actions_sfx, actions,
3528                                 sizeof(struct rte_flow_action));
3529                         actions_sfx++;
3530                         break;
3531                 }
3532         }
3533         /* Add end action to the actions. */
3534         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
3535         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
3536         actions_pre++;
3537         /* Set the tag. */
3538         set_tag = (void *)actions_pre;
3539         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3540         /*
3541          * Get the id from the qrss_pool to make qrss share the id with meter.
3542          */
3543         tag_id = flow_qrss_get_id(dev);
3544         set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
3545         tag_action->conf = set_tag;
3546         return tag_id;
3547 }
3548
3549 /**
3550  * Split action list having QUEUE/RSS for metadata register copy.
3551  *
3552  * Once Q/RSS action is detected in user's action list, the flow action
3553  * should be split in order to copy metadata registers, which will happen in
3554  * RX_CP_TBL like,
3555  *   - CQE->flow_tag := reg_c[1] (MARK)
3556  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3557  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
3558  * This is because the last action of each flow must be a terminal action
3559  * (QUEUE, RSS or DROP).
3560  *
3561  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
3562  * stored and kept in the mlx5_flow structure per each sub_flow.
3563  *
3564  * The Q/RSS action is replaced with,
3565  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
3566  * And the following JUMP action is added at the end,
3567  *   - JUMP, to RX_CP_TBL.
3568  *
3569  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
3570  * flow_create_split_metadata() routine. The flow will look like,
3571  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
3572  *
3573  * @param dev
3574  *   Pointer to Ethernet device.
3575  * @param[out] split_actions
3576  *   Pointer to store split actions to jump to CP_TBL.
3577  * @param[in] actions
3578  *   Pointer to the list of original flow actions.
3579  * @param[in] qrss
3580  *   Pointer to the Q/RSS action.
3581  * @param[in] actions_n
3582  *   Number of original actions.
3583  * @param[out] error
3584  *   Perform verbose error reporting if not NULL.
3585  *
3586  * @return
3587  *   non-zero unique flow_id on success, otherwise 0 and
3588  *   error/rte_error are set.
3589  */
3590 static uint32_t
3591 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
3592                           struct rte_flow_action *split_actions,
3593                           const struct rte_flow_action *actions,
3594                           const struct rte_flow_action *qrss,
3595                           int actions_n, struct rte_flow_error *error)
3596 {
3597         struct mlx5_rte_flow_action_set_tag *set_tag;
3598         struct rte_flow_action_jump *jump;
3599         const int qrss_idx = qrss - actions;
3600         uint32_t flow_id = 0;
3601         int ret = 0;
3602
3603         /*
3604          * Given actions will be split
3605          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
3606          * - Add jump to mreg CP_TBL.
3607          * As a result, there will be one more action.
3608          */
3609         ++actions_n;
3610         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
3611         set_tag = (void *)(split_actions + actions_n);
3612         /*
3613          * If tag action is not set to void(it means we are not the meter
3614          * suffix flow), add the tag action. Since meter suffix flow already
3615          * has the tag added.
3616          */
3617         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
3618                 /*
3619                  * Allocate the new subflow ID. This one is unique within
3620                  * device and not shared with representors. Otherwise,
3621                  * we would have to resolve multi-thread access synch
3622                  * issue. Each flow on the shared device is appended
3623                  * with source vport identifier, so the resulting
3624                  * flows will be unique in the shared (by master and
3625                  * representors) domain even if they have coinciding
3626                  * IDs.
3627                  */
3628                 flow_id = flow_qrss_get_id(dev);
3629                 if (!flow_id)
3630                         return rte_flow_error_set(error, ENOMEM,
3631                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3632                                                   NULL, "can't allocate id "
3633                                                   "for split Q/RSS subflow");
3634                 /* Internal SET_TAG action to set flow ID. */
3635                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
3636                         .data = flow_id,
3637                 };
3638                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
3639                 if (ret < 0)
3640                         return ret;
3641                 set_tag->id = ret;
3642                 /* Construct new actions array. */
3643                 /* Replace QUEUE/RSS action. */
3644                 split_actions[qrss_idx] = (struct rte_flow_action){
3645                         .type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
3646                         .conf = set_tag,
3647                 };
3648         }
3649         /* JUMP action to jump to mreg copy table (CP_TBL). */
3650         jump = (void *)(set_tag + 1);
3651         *jump = (struct rte_flow_action_jump){
3652                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
3653         };
3654         split_actions[actions_n - 2] = (struct rte_flow_action){
3655                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
3656                 .conf = jump,
3657         };
3658         split_actions[actions_n - 1] = (struct rte_flow_action){
3659                 .type = RTE_FLOW_ACTION_TYPE_END,
3660         };
3661         return flow_id;
3662 }
3663
3664 /**
3665  * Extend the given action list for Tx metadata copy.
3666  *
3667  * Copy the given action list to the ext_actions and add flow metadata register
3668  * copy action in order to copy reg_a set by WQE to reg_c[0].
3669  *
3670  * @param[out] ext_actions
3671  *   Pointer to the extended action list.
3672  * @param[in] actions
3673  *   Pointer to the list of actions.
3674  * @param[in] actions_n
3675  *   Number of actions in the list.
3676  * @param[out] error
3677  *   Perform verbose error reporting if not NULL.
3678  *
3679  * @return
3680  *   0 on success, negative value otherwise
3681  */
3682 static int
3683 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
3684                        struct rte_flow_action *ext_actions,
3685                        const struct rte_flow_action *actions,
3686                        int actions_n, struct rte_flow_error *error)
3687 {
3688         struct mlx5_flow_action_copy_mreg *cp_mreg =
3689                 (struct mlx5_flow_action_copy_mreg *)
3690                         (ext_actions + actions_n + 1);
3691         int ret;
3692
3693         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
3694         if (ret < 0)
3695                 return ret;
3696         cp_mreg->dst = ret;
3697         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
3698         if (ret < 0)
3699                 return ret;
3700         cp_mreg->src = ret;
3701         memcpy(ext_actions, actions,
3702                         sizeof(*ext_actions) * actions_n);
3703         ext_actions[actions_n - 1] = (struct rte_flow_action){
3704                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3705                 .conf = cp_mreg,
3706         };
3707         ext_actions[actions_n] = (struct rte_flow_action){
3708                 .type = RTE_FLOW_ACTION_TYPE_END,
3709         };
3710         return 0;
3711 }
3712
3713 /**
3714  * The splitting for metadata feature.
3715  *
3716  * - Q/RSS action on NIC Rx should be split in order to pass by
3717  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
3718  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
3719  *
3720  * - All the actions on NIC Tx should have a mreg copy action to
3721  *   copy reg_a from WQE to reg_c[0].
3722  *
3723  * @param dev
3724  *   Pointer to Ethernet device.
3725  * @param[in] flow
3726  *   Parent flow structure pointer.
3727  * @param[in] attr
3728  *   Flow rule attributes.
3729  * @param[in] items
3730  *   Pattern specification (list terminated by the END pattern item).
3731  * @param[in] actions
3732  *   Associated actions (list terminated by the END action).
3733  * @param[in] external
3734  *   This flow rule is created by request external to PMD.
3735  * @param[out] error
3736  *   Perform verbose error reporting if not NULL.
3737  * @return
3738  *   0 on success, negative value otherwise
3739  */
3740 static int
3741 flow_create_split_metadata(struct rte_eth_dev *dev,
3742                            struct rte_flow *flow,
3743                            const struct rte_flow_attr *attr,
3744                            const struct rte_flow_item items[],
3745                            const struct rte_flow_action actions[],
3746                            bool external, struct rte_flow_error *error)
3747 {
3748         struct mlx5_priv *priv = dev->data->dev_private;
3749         struct mlx5_dev_config *config = &priv->config;
3750         const struct rte_flow_action *qrss = NULL;
3751         struct rte_flow_action *ext_actions = NULL;
3752         struct mlx5_flow *dev_flow = NULL;
3753         uint32_t qrss_id = 0;
3754         int mtr_sfx = 0;
3755         size_t act_size;
3756         int actions_n;
3757         int ret;
3758
3759         /* Check whether extensive metadata feature is engaged. */
3760         if (!config->dv_flow_en ||
3761             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3762             !mlx5_flow_ext_mreg_supported(dev))
3763                 return flow_create_split_inner(dev, flow, NULL, attr, items,
3764                                                actions, external, error);
3765         actions_n = flow_parse_qrss_action(actions, &qrss);
3766         if (qrss) {
3767                 /* Exclude hairpin flows from splitting. */
3768                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
3769                         const struct rte_flow_action_queue *queue;
3770
3771                         queue = qrss->conf;
3772                         if (mlx5_rxq_get_type(dev, queue->index) ==
3773                             MLX5_RXQ_TYPE_HAIRPIN)
3774                                 qrss = NULL;
3775                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
3776                         const struct rte_flow_action_rss *rss;
3777
3778                         rss = qrss->conf;
3779                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
3780                             MLX5_RXQ_TYPE_HAIRPIN)
3781                                 qrss = NULL;
3782                 }
3783         }
3784         if (qrss) {
3785                 /* Check if it is in meter suffix table. */
3786                 mtr_sfx = attr->group == (attr->transfer ?
3787                           (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
3788                           MLX5_FLOW_TABLE_LEVEL_SUFFIX);
3789                 /*
3790                  * Q/RSS action on NIC Rx should be split in order to pass by
3791                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
3792                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
3793                  */
3794                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3795                            sizeof(struct rte_flow_action_set_tag) +
3796                            sizeof(struct rte_flow_action_jump);
3797                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3798                 if (!ext_actions)
3799                         return rte_flow_error_set(error, ENOMEM,
3800                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3801                                                   NULL, "no memory to split "
3802                                                   "metadata flow");
3803                 /*
3804                  * If we are the suffix flow of meter, tag already exist.
3805                  * Set the tag action to void.
3806                  */
3807                 if (mtr_sfx)
3808                         ext_actions[qrss - actions].type =
3809                                                 RTE_FLOW_ACTION_TYPE_VOID;
3810                 else
3811                         ext_actions[qrss - actions].type =
3812                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3813                 /*
3814                  * Create the new actions list with removed Q/RSS action
3815                  * and appended set tag and jump to register copy table
3816                  * (RX_CP_TBL). We should preallocate unique tag ID here
3817                  * in advance, because it is needed for set tag action.
3818                  */
3819                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
3820                                                     qrss, actions_n, error);
3821                 if (!mtr_sfx && !qrss_id) {
3822                         ret = -rte_errno;
3823                         goto exit;
3824                 }
3825         } else if (attr->egress && !attr->transfer) {
3826                 /*
3827                  * All the actions on NIC Tx should have a metadata register
3828                  * copy action to copy reg_a from WQE to reg_c[meta]
3829                  */
3830                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3831                            sizeof(struct mlx5_flow_action_copy_mreg);
3832                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3833                 if (!ext_actions)
3834                         return rte_flow_error_set(error, ENOMEM,
3835                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3836                                                   NULL, "no memory to split "
3837                                                   "metadata flow");
3838                 /* Create the action list appended with copy register. */
3839                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
3840                                              actions_n, error);
3841                 if (ret < 0)
3842                         goto exit;
3843         }
3844         /* Add the unmodified original or prefix subflow. */
3845         ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
3846                                       ext_actions ? ext_actions : actions,
3847                                       external, error);
3848         if (ret < 0)
3849                 goto exit;
3850         assert(dev_flow);
3851         if (qrss) {
3852                 const struct rte_flow_attr q_attr = {
3853                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
3854                         .ingress = 1,
3855                 };
3856                 /* Internal PMD action to set register. */
3857                 struct mlx5_rte_flow_item_tag q_tag_spec = {
3858                         .data = qrss_id,
3859                         .id = 0,
3860                 };
3861                 struct rte_flow_item q_items[] = {
3862                         {
3863                                 .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3864                                 .spec = &q_tag_spec,
3865                                 .last = NULL,
3866                                 .mask = NULL,
3867                         },
3868                         {
3869                                 .type = RTE_FLOW_ITEM_TYPE_END,
3870                         },
3871                 };
3872                 struct rte_flow_action q_actions[] = {
3873                         {
3874                                 .type = qrss->type,
3875                                 .conf = qrss->conf,
3876                         },
3877                         {
3878                                 .type = RTE_FLOW_ACTION_TYPE_END,
3879                         },
3880                 };
3881                 uint64_t hash_fields = dev_flow->hash_fields;
3882
3883                 /*
3884                  * Configure the tag item only if there is no meter subflow.
3885                  * Since tag is already marked in the meter suffix subflow
3886                  * we can just use the meter suffix items as is.
3887                  */
3888                 if (qrss_id) {
3889                         /* Not meter subflow. */
3890                         assert(!mtr_sfx);
3891                         /*
3892                          * Put unique id in prefix flow due to it is destroyed
3893                          * after suffix flow and id will be freed after there
3894                          * is no actual flows with this id and identifier
3895                          * reallocation becomes possible (for example, for
3896                          * other flows in other threads).
3897                          */
3898                         dev_flow->qrss_id = qrss_id;
3899                         qrss_id = 0;
3900                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
3901                                                    error);
3902                         if (ret < 0)
3903                                 goto exit;
3904                         q_tag_spec.id = ret;
3905                 }
3906                 dev_flow = NULL;
3907                 /* Add suffix subflow to execute Q/RSS. */
3908                 ret = flow_create_split_inner(dev, flow, &dev_flow,
3909                                               &q_attr, mtr_sfx ? items :
3910                                               q_items, q_actions,
3911                                               external, error);
3912                 if (ret < 0)
3913                         goto exit;
3914                 assert(dev_flow);
3915                 dev_flow->hash_fields = hash_fields;
3916         }
3917
3918 exit:
3919         /*
3920          * We do not destroy the partially created sub_flows in case of error.
3921          * These ones are included into parent flow list and will be destroyed
3922          * by flow_drv_destroy.
3923          */
3924         flow_qrss_free_id(dev, qrss_id);
3925         rte_free(ext_actions);
3926         return ret;
3927 }
3928
3929 /**
3930  * The splitting for meter feature.
3931  *
3932  * - The meter flow will be split to two flows as prefix and
3933  *   suffix flow. The packets make sense only it pass the prefix
3934  *   meter action.
3935  *
3936  * - Reg_C_5 is used for the packet to match betweend prefix and
3937  *   suffix flow.
3938  *
3939  * @param dev
3940  *   Pointer to Ethernet device.
3941  * @param[in] flow
3942  *   Parent flow structure pointer.
3943  * @param[in] attr
3944  *   Flow rule attributes.
3945  * @param[in] items
3946  *   Pattern specification (list terminated by the END pattern item).
3947  * @param[in] actions
3948  *   Associated actions (list terminated by the END action).
3949  * @param[in] external
3950  *   This flow rule is created by request external to PMD.
3951  * @param[out] error
3952  *   Perform verbose error reporting if not NULL.
3953  * @return
3954  *   0 on success, negative value otherwise
3955  */
3956 static int
3957 flow_create_split_meter(struct rte_eth_dev *dev,
3958                            struct rte_flow *flow,
3959                            const struct rte_flow_attr *attr,
3960                            const struct rte_flow_item items[],
3961                            const struct rte_flow_action actions[],
3962                            bool external, struct rte_flow_error *error)
3963 {
3964         struct mlx5_priv *priv = dev->data->dev_private;
3965         struct rte_flow_action *sfx_actions = NULL;
3966         struct rte_flow_action *pre_actions = NULL;
3967         struct rte_flow_item *sfx_items = NULL;
3968         const  struct rte_flow_item *sfx_port_id_item;
3969         struct mlx5_flow *dev_flow = NULL;
3970         struct rte_flow_attr sfx_attr = *attr;
3971         uint32_t mtr = 0;
3972         uint32_t mtr_tag_id = 0;
3973         size_t act_size;
3974         size_t item_size;
3975         int actions_n = 0;
3976         int ret;
3977
3978         if (priv->mtr_en)
3979                 actions_n = flow_check_meter_action(actions, &mtr);
3980         if (mtr) {
3981                 struct mlx5_rte_flow_item_tag *tag_spec;
3982                 struct mlx5_rte_flow_item_tag *tag_mask;
3983                 /* The five prefix actions: meter, decap, encap, tag, end. */
3984                 act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
3985                            sizeof(struct rte_flow_action_set_tag);
3986                 /* tag, end. */
3987 #define METER_SUFFIX_ITEM 3
3988                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
3989                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
3990                 sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
3991                 if (!sfx_actions)
3992                         return rte_flow_error_set(error, ENOMEM,
3993                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3994                                                   NULL, "no memory to split "
3995                                                   "meter flow");
3996                 pre_actions = sfx_actions + actions_n;
3997                 mtr_tag_id = flow_meter_split_prep(dev, actions, sfx_actions,
3998                                                      pre_actions);
3999                 if (!mtr_tag_id) {
4000                         ret = -rte_errno;
4001                         goto exit;
4002                 }
4003                 /* Add the prefix subflow. */
4004                 ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
4005                                                   pre_actions, external, error);
4006                 if (ret) {
4007                         ret = -rte_errno;
4008                         goto exit;
4009                 }
4010                 dev_flow->mtr_flow_id = mtr_tag_id;
4011                 /* Prepare the suffix flow match pattern. */
4012                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
4013                              act_size);
4014                 tag_spec = (struct mlx5_rte_flow_item_tag *)(sfx_items +
4015                             METER_SUFFIX_ITEM);
4016                 tag_spec->data = dev_flow->mtr_flow_id << MLX5_MTR_COLOR_BITS;
4017                 tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0,
4018                                                     error);
4019                 tag_mask = tag_spec + 1;
4020                 tag_mask->data = 0xffffff00;
4021                 sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
4022                 sfx_items->spec = tag_spec;
4023                 sfx_items->last = NULL;
4024                 sfx_items->mask = tag_mask;
4025                 sfx_items++;
4026                 sfx_port_id_item = find_port_id_item(items);
4027                 if (sfx_port_id_item) {
4028                         memcpy(sfx_items, sfx_port_id_item,
4029                                sizeof(*sfx_items));
4030                         sfx_items++;
4031                 }
4032                 sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
4033                 sfx_items -= sfx_port_id_item ? 2 : 1;
4034                 /* Setting the sfx group atrr. */
4035                 sfx_attr.group = sfx_attr.transfer ?
4036                                 (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
4037                                  MLX5_FLOW_TABLE_LEVEL_SUFFIX;
4038         }
4039         /* Add the prefix subflow. */
4040         ret = flow_create_split_metadata(dev, flow, &sfx_attr,
4041                                          sfx_items ? sfx_items : items,
4042                                          sfx_actions ? sfx_actions : actions,
4043                                          external, error);
4044 exit:
4045         if (sfx_actions)
4046                 rte_free(sfx_actions);
4047         return ret;
4048 }
4049
4050 /**
4051  * Split the flow to subflow set. The splitters might be linked
4052  * in the chain, like this:
4053  * flow_create_split_outer() calls:
4054  *   flow_create_split_meter() calls:
4055  *     flow_create_split_metadata(meter_subflow_0) calls:
4056  *       flow_create_split_inner(metadata_subflow_0)
4057  *       flow_create_split_inner(metadata_subflow_1)
4058  *       flow_create_split_inner(metadata_subflow_2)
4059  *     flow_create_split_metadata(meter_subflow_1) calls:
4060  *       flow_create_split_inner(metadata_subflow_0)
4061  *       flow_create_split_inner(metadata_subflow_1)
4062  *       flow_create_split_inner(metadata_subflow_2)
4063  *
4064  * This provide flexible way to add new levels of flow splitting.
4065  * The all of successfully created subflows are included to the
4066  * parent flow dev_flow list.
4067  *
4068  * @param dev
4069  *   Pointer to Ethernet device.
4070  * @param[in] flow
4071  *   Parent flow structure pointer.
4072  * @param[in] attr
4073  *   Flow rule attributes.
4074  * @param[in] items
4075  *   Pattern specification (list terminated by the END pattern item).
4076  * @param[in] actions
4077  *   Associated actions (list terminated by the END action).
4078  * @param[in] external
4079  *   This flow rule is created by request external to PMD.
4080  * @param[out] error
4081  *   Perform verbose error reporting if not NULL.
4082  * @return
4083  *   0 on success, negative value otherwise
4084  */
4085 static int
4086 flow_create_split_outer(struct rte_eth_dev *dev,
4087                         struct rte_flow *flow,
4088                         const struct rte_flow_attr *attr,
4089                         const struct rte_flow_item items[],
4090                         const struct rte_flow_action actions[],
4091                         bool external, struct rte_flow_error *error)
4092 {
4093         int ret;
4094
4095         ret = flow_create_split_meter(dev, flow, attr, items,
4096                                          actions, external, error);
4097         assert(ret <= 0);
4098         return ret;
4099 }
4100
4101 /**
4102  * Create a flow and add it to @p list.
4103  *
4104  * @param dev
4105  *   Pointer to Ethernet device.
4106  * @param list
4107  *   Pointer to a TAILQ flow list. If this parameter NULL,
4108  *   no list insertion occurred, flow is just created,
4109  *   this is caller's responsibility to track the
4110  *   created flow.
4111  * @param[in] attr
4112  *   Flow rule attributes.
4113  * @param[in] items
4114  *   Pattern specification (list terminated by the END pattern item).
4115  * @param[in] actions
4116  *   Associated actions (list terminated by the END action).
4117  * @param[in] external
4118  *   This flow rule is created by request external to PMD.
4119  * @param[out] error
4120  *   Perform verbose error reporting if not NULL.
4121  *
4122  * @return
4123  *   A flow on success, NULL otherwise and rte_errno is set.
4124  */
4125 static struct rte_flow *
4126 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
4127                  const struct rte_flow_attr *attr,
4128                  const struct rte_flow_item items[],
4129                  const struct rte_flow_action actions[],
4130                  bool external, struct rte_flow_error *error)
4131 {
4132         struct mlx5_priv *priv = dev->data->dev_private;
4133         struct rte_flow *flow = NULL;
4134         struct mlx5_flow *dev_flow;
4135         const struct rte_flow_action_rss *rss;
4136         union {
4137                 struct rte_flow_expand_rss buf;
4138                 uint8_t buffer[2048];
4139         } expand_buffer;
4140         union {
4141                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4142                 uint8_t buffer[2048];
4143         } actions_rx;
4144         union {
4145                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4146                 uint8_t buffer[2048];
4147         } actions_hairpin_tx;
4148         union {
4149                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
4150                 uint8_t buffer[2048];
4151         } items_tx;
4152         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
4153         const struct rte_flow_action *p_actions_rx = actions;
4154         int ret;
4155         uint32_t i;
4156         uint32_t flow_size;
4157         int hairpin_flow = 0;
4158         uint32_t hairpin_id = 0;
4159         struct rte_flow_attr attr_tx = { .priority = 0 };
4160
4161         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4162         if (hairpin_flow > 0) {
4163                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
4164                         rte_errno = EINVAL;
4165                         return NULL;
4166                 }
4167                 flow_hairpin_split(dev, actions, actions_rx.actions,
4168                                    actions_hairpin_tx.actions, items_tx.items,
4169                                    &hairpin_id);
4170                 p_actions_rx = actions_rx.actions;
4171         }
4172         ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
4173                                 error);
4174         if (ret < 0)
4175                 goto error_before_flow;
4176         flow_size = sizeof(struct rte_flow);
4177         rss = flow_get_rss_action(p_actions_rx);
4178         if (rss)
4179                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
4180                                             sizeof(void *));
4181         else
4182                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
4183         flow = rte_calloc(__func__, 1, flow_size, 0);
4184         if (!flow) {
4185                 rte_errno = ENOMEM;
4186                 goto error_before_flow;
4187         }
4188         flow->drv_type = flow_get_drv_type(dev, attr);
4189         if (hairpin_id != 0)
4190                 flow->hairpin_flow_id = hairpin_id;
4191         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
4192                flow->drv_type < MLX5_FLOW_TYPE_MAX);
4193         flow->rss.queue = (void *)(flow + 1);
4194         if (rss) {
4195                 /*
4196                  * The following information is required by
4197                  * mlx5_flow_hashfields_adjust() in advance.
4198                  */
4199                 flow->rss.level = rss->level;
4200                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
4201                 flow->rss.types = !rss->types ? ETH_RSS_IP : rss->types;
4202         }
4203         LIST_INIT(&flow->dev_flows);
4204         if (rss && rss->types) {
4205                 unsigned int graph_root;
4206
4207                 graph_root = find_graph_root(items, rss->level);
4208                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
4209                                           items, rss->types,
4210                                           mlx5_support_expansion,
4211                                           graph_root);
4212                 assert(ret > 0 &&
4213                        (unsigned int)ret < sizeof(expand_buffer.buffer));
4214         } else {
4215                 buf->entries = 1;
4216                 buf->entry[0].pattern = (void *)(uintptr_t)items;
4217         }
4218         for (i = 0; i < buf->entries; ++i) {
4219                 /*
4220                  * The splitter may create multiple dev_flows,
4221                  * depending on configuration. In the simplest
4222                  * case it just creates unmodified original flow.
4223                  */
4224                 ret = flow_create_split_outer(dev, flow, attr,
4225                                               buf->entry[i].pattern,
4226                                               p_actions_rx, external,
4227                                               error);
4228                 if (ret < 0)
4229                         goto error;
4230         }
4231         /* Create the tx flow. */
4232         if (hairpin_flow) {
4233                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
4234                 attr_tx.ingress = 0;
4235                 attr_tx.egress = 1;
4236                 dev_flow = flow_drv_prepare(flow, &attr_tx, items_tx.items,
4237                                             actions_hairpin_tx.actions, error);
4238                 if (!dev_flow)
4239                         goto error;
4240                 dev_flow->flow = flow;
4241                 dev_flow->external = 0;
4242                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
4243                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
4244                                          items_tx.items,
4245                                          actions_hairpin_tx.actions, error);
4246                 if (ret < 0)
4247                         goto error;
4248         }
4249         /*
4250          * Update the metadata register copy table. If extensive
4251          * metadata feature is enabled and registers are supported
4252          * we might create the extra rte_flow for each unique
4253          * MARK/FLAG action ID.
4254          *
4255          * The table is updated for ingress Flows only, because
4256          * the egress Flows belong to the different device and
4257          * copy table should be updated in peer NIC Rx domain.
4258          */
4259         if (attr->ingress &&
4260             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
4261                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
4262                 if (ret)
4263                         goto error;
4264         }
4265         if (dev->data->dev_started) {
4266                 ret = flow_drv_apply(dev, flow, error);
4267                 if (ret < 0)
4268                         goto error;
4269         }
4270         if (list)
4271                 TAILQ_INSERT_TAIL(list, flow, next);
4272         flow_rxq_flags_set(dev, flow);
4273         return flow;
4274 error_before_flow:
4275         if (hairpin_id)
4276                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4277                                      hairpin_id);
4278         return NULL;
4279 error:
4280         assert(flow);
4281         flow_mreg_del_copy_action(dev, flow);
4282         ret = rte_errno; /* Save rte_errno before cleanup. */
4283         if (flow->hairpin_flow_id)
4284                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4285                                      flow->hairpin_flow_id);
4286         assert(flow);
4287         flow_drv_destroy(dev, flow);
4288         rte_free(flow);
4289         rte_errno = ret; /* Restore rte_errno. */
4290         return NULL;
4291 }
4292
4293 /**
4294  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
4295  * incoming packets to table 1.
4296  *
4297  * Other flow rules, requested for group n, will be created in
4298  * e-switch table n+1.
4299  * Jump action to e-switch group n will be created to group n+1.
4300  *
4301  * Used when working in switchdev mode, to utilise advantages of table 1
4302  * and above.
4303  *
4304  * @param dev
4305  *   Pointer to Ethernet device.
4306  *
4307  * @return
4308  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
4309  */
4310 struct rte_flow *
4311 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
4312 {
4313         const struct rte_flow_attr attr = {
4314                 .group = 0,
4315                 .priority = 0,
4316                 .ingress = 1,
4317                 .egress = 0,
4318                 .transfer = 1,
4319         };
4320         const struct rte_flow_item pattern = {
4321                 .type = RTE_FLOW_ITEM_TYPE_END,
4322         };
4323         struct rte_flow_action_jump jump = {
4324                 .group = 1,
4325         };
4326         const struct rte_flow_action actions[] = {
4327                 {
4328                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4329                         .conf = &jump,
4330                 },
4331                 {
4332                         .type = RTE_FLOW_ACTION_TYPE_END,
4333                 },
4334         };
4335         struct mlx5_priv *priv = dev->data->dev_private;
4336         struct rte_flow_error error;
4337
4338         return flow_list_create(dev, &priv->ctrl_flows, &attr, &pattern,
4339                                 actions, false, &error);
4340 }
4341
4342 /**
4343  * Create a flow.
4344  *
4345  * @see rte_flow_create()
4346  * @see rte_flow_ops
4347  */
4348 struct rte_flow *
4349 mlx5_flow_create(struct rte_eth_dev *dev,
4350                  const struct rte_flow_attr *attr,
4351                  const struct rte_flow_item items[],
4352                  const struct rte_flow_action actions[],
4353                  struct rte_flow_error *error)
4354 {
4355         struct mlx5_priv *priv = dev->data->dev_private;
4356
4357         return flow_list_create(dev, &priv->flows,
4358                                 attr, items, actions, true, error);
4359 }
4360
4361 /**
4362  * Destroy a flow in a list.
4363  *
4364  * @param dev
4365  *   Pointer to Ethernet device.
4366  * @param list
4367  *   Pointer to a TAILQ flow list. If this parameter NULL,
4368  *   there is no flow removal from the list.
4369  * @param[in] flow
4370  *   Flow to destroy.
4371  */
4372 static void
4373 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
4374                   struct rte_flow *flow)
4375 {
4376         struct mlx5_priv *priv = dev->data->dev_private;
4377
4378         /*
4379          * Update RX queue flags only if port is started, otherwise it is
4380          * already clean.
4381          */
4382         if (dev->data->dev_started)
4383                 flow_rxq_flags_trim(dev, flow);
4384         if (flow->hairpin_flow_id)
4385                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4386                                      flow->hairpin_flow_id);
4387         flow_drv_destroy(dev, flow);
4388         if (list)
4389                 TAILQ_REMOVE(list, flow, next);
4390         flow_mreg_del_copy_action(dev, flow);
4391         rte_free(flow->fdir);
4392         rte_free(flow);
4393 }
4394
4395 /**
4396  * Destroy all flows.
4397  *
4398  * @param dev
4399  *   Pointer to Ethernet device.
4400  * @param list
4401  *   Pointer to a TAILQ flow list.
4402  */
4403 void
4404 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
4405 {
4406         while (!TAILQ_EMPTY(list)) {
4407                 struct rte_flow *flow;
4408
4409                 flow = TAILQ_FIRST(list);
4410                 flow_list_destroy(dev, list, flow);
4411         }
4412 }
4413
4414 /**
4415  * Remove all flows.
4416  *
4417  * @param dev
4418  *   Pointer to Ethernet device.
4419  * @param list
4420  *   Pointer to a TAILQ flow list.
4421  */
4422 void
4423 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
4424 {
4425         struct rte_flow *flow;
4426
4427         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
4428                 flow_drv_remove(dev, flow);
4429                 flow_mreg_stop_copy_action(dev, flow);
4430         }
4431         flow_mreg_del_default_copy_action(dev);
4432         flow_rxq_flags_clear(dev);
4433 }
4434
4435 /**
4436  * Add all flows.
4437  *
4438  * @param dev
4439  *   Pointer to Ethernet device.
4440  * @param list
4441  *   Pointer to a TAILQ flow list.
4442  *
4443  * @return
4444  *   0 on success, a negative errno value otherwise and rte_errno is set.
4445  */
4446 int
4447 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
4448 {
4449         struct rte_flow *flow;
4450         struct rte_flow_error error;
4451         int ret = 0;
4452
4453         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4454         ret = flow_mreg_add_default_copy_action(dev, &error);
4455         if (ret < 0)
4456                 return -rte_errno;
4457         /* Apply Flows created by application. */
4458         TAILQ_FOREACH(flow, list, next) {
4459                 ret = flow_mreg_start_copy_action(dev, flow);
4460                 if (ret < 0)
4461                         goto error;
4462                 ret = flow_drv_apply(dev, flow, &error);
4463                 if (ret < 0)
4464                         goto error;
4465                 flow_rxq_flags_set(dev, flow);
4466         }
4467         return 0;
4468 error:
4469         ret = rte_errno; /* Save rte_errno before cleanup. */
4470         mlx5_flow_stop(dev, list);
4471         rte_errno = ret; /* Restore rte_errno. */
4472         return -rte_errno;
4473 }
4474
4475 /**
4476  * Verify the flow list is empty
4477  *
4478  * @param dev
4479  *  Pointer to Ethernet device.
4480  *
4481  * @return the number of flows not released.
4482  */
4483 int
4484 mlx5_flow_verify(struct rte_eth_dev *dev)
4485 {
4486         struct mlx5_priv *priv = dev->data->dev_private;
4487         struct rte_flow *flow;
4488         int ret = 0;
4489
4490         TAILQ_FOREACH(flow, &priv->flows, next) {
4491                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
4492                         dev->data->port_id, (void *)flow);
4493                 ++ret;
4494         }
4495         return ret;
4496 }
4497
4498 /**
4499  * Enable default hairpin egress flow.
4500  *
4501  * @param dev
4502  *   Pointer to Ethernet device.
4503  * @param queue
4504  *   The queue index.
4505  *
4506  * @return
4507  *   0 on success, a negative errno value otherwise and rte_errno is set.
4508  */
4509 int
4510 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
4511                             uint32_t queue)
4512 {
4513         struct mlx5_priv *priv = dev->data->dev_private;
4514         const struct rte_flow_attr attr = {
4515                 .egress = 1,
4516                 .priority = 0,
4517         };
4518         struct mlx5_rte_flow_item_tx_queue queue_spec = {
4519                 .queue = queue,
4520         };
4521         struct mlx5_rte_flow_item_tx_queue queue_mask = {
4522                 .queue = UINT32_MAX,
4523         };
4524         struct rte_flow_item items[] = {
4525                 {
4526                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
4527                         .spec = &queue_spec,
4528                         .last = NULL,
4529                         .mask = &queue_mask,
4530                 },
4531                 {
4532                         .type = RTE_FLOW_ITEM_TYPE_END,
4533                 },
4534         };
4535         struct rte_flow_action_jump jump = {
4536                 .group = MLX5_HAIRPIN_TX_TABLE,
4537         };
4538         struct rte_flow_action actions[2];
4539         struct rte_flow *flow;
4540         struct rte_flow_error error;
4541
4542         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
4543         actions[0].conf = &jump;
4544         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
4545         flow = flow_list_create(dev, &priv->ctrl_flows,
4546                                 &attr, items, actions, false, &error);
4547         if (!flow) {
4548                 DRV_LOG(DEBUG,
4549                         "Failed to create ctrl flow: rte_errno(%d),"
4550                         " type(%d), message(%s)",
4551                         rte_errno, error.type,
4552                         error.message ? error.message : " (no stated reason)");
4553                 return -rte_errno;
4554         }
4555         return 0;
4556 }
4557
4558 /**
4559  * Enable a control flow configured from the control plane.
4560  *
4561  * @param dev
4562  *   Pointer to Ethernet device.
4563  * @param eth_spec
4564  *   An Ethernet flow spec to apply.
4565  * @param eth_mask
4566  *   An Ethernet flow mask to apply.
4567  * @param vlan_spec
4568  *   A VLAN flow spec to apply.
4569  * @param vlan_mask
4570  *   A VLAN flow mask to apply.
4571  *
4572  * @return
4573  *   0 on success, a negative errno value otherwise and rte_errno is set.
4574  */
4575 int
4576 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
4577                     struct rte_flow_item_eth *eth_spec,
4578                     struct rte_flow_item_eth *eth_mask,
4579                     struct rte_flow_item_vlan *vlan_spec,
4580                     struct rte_flow_item_vlan *vlan_mask)
4581 {
4582         struct mlx5_priv *priv = dev->data->dev_private;
4583         const struct rte_flow_attr attr = {
4584                 .ingress = 1,
4585                 .priority = MLX5_FLOW_PRIO_RSVD,
4586         };
4587         struct rte_flow_item items[] = {
4588                 {
4589                         .type = RTE_FLOW_ITEM_TYPE_ETH,
4590                         .spec = eth_spec,
4591                         .last = NULL,
4592                         .mask = eth_mask,
4593                 },
4594                 {
4595                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
4596                                               RTE_FLOW_ITEM_TYPE_END,
4597                         .spec = vlan_spec,
4598                         .last = NULL,
4599                         .mask = vlan_mask,
4600                 },
4601                 {
4602                         .type = RTE_FLOW_ITEM_TYPE_END,
4603                 },
4604         };
4605         uint16_t queue[priv->reta_idx_n];
4606         struct rte_flow_action_rss action_rss = {
4607                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
4608                 .level = 0,
4609                 .types = priv->rss_conf.rss_hf,
4610                 .key_len = priv->rss_conf.rss_key_len,
4611                 .queue_num = priv->reta_idx_n,
4612                 .key = priv->rss_conf.rss_key,
4613                 .queue = queue,
4614         };
4615         struct rte_flow_action actions[] = {
4616                 {
4617                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4618                         .conf = &action_rss,
4619                 },
4620                 {
4621                         .type = RTE_FLOW_ACTION_TYPE_END,
4622                 },
4623         };
4624         struct rte_flow *flow;
4625         struct rte_flow_error error;
4626         unsigned int i;
4627
4628         if (!priv->reta_idx_n || !priv->rxqs_n) {
4629                 return 0;
4630         }
4631         for (i = 0; i != priv->reta_idx_n; ++i)
4632                 queue[i] = (*priv->reta_idx)[i];
4633         flow = flow_list_create(dev, &priv->ctrl_flows,
4634                                 &attr, items, actions, false, &error);
4635         if (!flow)
4636                 return -rte_errno;
4637         return 0;
4638 }
4639
4640 /**
4641  * Enable a flow control configured from the control plane.
4642  *
4643  * @param dev
4644  *   Pointer to Ethernet device.
4645  * @param eth_spec
4646  *   An Ethernet flow spec to apply.
4647  * @param eth_mask
4648  *   An Ethernet flow mask to apply.
4649  *
4650  * @return
4651  *   0 on success, a negative errno value otherwise and rte_errno is set.
4652  */
4653 int
4654 mlx5_ctrl_flow(struct rte_eth_dev *dev,
4655                struct rte_flow_item_eth *eth_spec,
4656                struct rte_flow_item_eth *eth_mask)
4657 {
4658         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
4659 }
4660
4661 /**
4662  * Destroy a flow.
4663  *
4664  * @see rte_flow_destroy()
4665  * @see rte_flow_ops
4666  */
4667 int
4668 mlx5_flow_destroy(struct rte_eth_dev *dev,
4669                   struct rte_flow *flow,
4670                   struct rte_flow_error *error __rte_unused)
4671 {
4672         struct mlx5_priv *priv = dev->data->dev_private;
4673
4674         flow_list_destroy(dev, &priv->flows, flow);
4675         return 0;
4676 }
4677
4678 /**
4679  * Destroy all flows.
4680  *
4681  * @see rte_flow_flush()
4682  * @see rte_flow_ops
4683  */
4684 int
4685 mlx5_flow_flush(struct rte_eth_dev *dev,
4686                 struct rte_flow_error *error __rte_unused)
4687 {
4688         struct mlx5_priv *priv = dev->data->dev_private;
4689
4690         mlx5_flow_list_flush(dev, &priv->flows);
4691         return 0;
4692 }
4693
4694 /**
4695  * Isolated mode.
4696  *
4697  * @see rte_flow_isolate()
4698  * @see rte_flow_ops
4699  */
4700 int
4701 mlx5_flow_isolate(struct rte_eth_dev *dev,
4702                   int enable,
4703                   struct rte_flow_error *error)
4704 {
4705         struct mlx5_priv *priv = dev->data->dev_private;
4706
4707         if (dev->data->dev_started) {
4708                 rte_flow_error_set(error, EBUSY,
4709                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4710                                    NULL,
4711                                    "port must be stopped first");
4712                 return -rte_errno;
4713         }
4714         priv->isolated = !!enable;
4715         if (enable)
4716                 dev->dev_ops = &mlx5_dev_ops_isolate;
4717         else
4718                 dev->dev_ops = &mlx5_dev_ops;
4719         return 0;
4720 }
4721
4722 /**
4723  * Query a flow.
4724  *
4725  * @see rte_flow_query()
4726  * @see rte_flow_ops
4727  */
4728 static int
4729 flow_drv_query(struct rte_eth_dev *dev,
4730                struct rte_flow *flow,
4731                const struct rte_flow_action *actions,
4732                void *data,
4733                struct rte_flow_error *error)
4734 {
4735         const struct mlx5_flow_driver_ops *fops;
4736         enum mlx5_flow_drv_type ftype = flow->drv_type;
4737
4738         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
4739         fops = flow_get_drv_ops(ftype);
4740
4741         return fops->query(dev, flow, actions, data, error);
4742 }
4743
4744 /**
4745  * Query a flow.
4746  *
4747  * @see rte_flow_query()
4748  * @see rte_flow_ops
4749  */
4750 int
4751 mlx5_flow_query(struct rte_eth_dev *dev,
4752                 struct rte_flow *flow,
4753                 const struct rte_flow_action *actions,
4754                 void *data,
4755                 struct rte_flow_error *error)
4756 {
4757         int ret;
4758
4759         ret = flow_drv_query(dev, flow, actions, data, error);
4760         if (ret < 0)
4761                 return ret;
4762         return 0;
4763 }
4764
4765 /**
4766  * Convert a flow director filter to a generic flow.
4767  *
4768  * @param dev
4769  *   Pointer to Ethernet device.
4770  * @param fdir_filter
4771  *   Flow director filter to add.
4772  * @param attributes
4773  *   Generic flow parameters structure.
4774  *
4775  * @return
4776  *   0 on success, a negative errno value otherwise and rte_errno is set.
4777  */
4778 static int
4779 flow_fdir_filter_convert(struct rte_eth_dev *dev,
4780                          const struct rte_eth_fdir_filter *fdir_filter,
4781                          struct mlx5_fdir *attributes)
4782 {
4783         struct mlx5_priv *priv = dev->data->dev_private;
4784         const struct rte_eth_fdir_input *input = &fdir_filter->input;
4785         const struct rte_eth_fdir_masks *mask =
4786                 &dev->data->dev_conf.fdir_conf.mask;
4787
4788         /* Validate queue number. */
4789         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
4790                 DRV_LOG(ERR, "port %u invalid queue number %d",
4791                         dev->data->port_id, fdir_filter->action.rx_queue);
4792                 rte_errno = EINVAL;
4793                 return -rte_errno;
4794         }
4795         attributes->attr.ingress = 1;
4796         attributes->items[0] = (struct rte_flow_item) {
4797                 .type = RTE_FLOW_ITEM_TYPE_ETH,
4798                 .spec = &attributes->l2,
4799                 .mask = &attributes->l2_mask,
4800         };
4801         switch (fdir_filter->action.behavior) {
4802         case RTE_ETH_FDIR_ACCEPT:
4803                 attributes->actions[0] = (struct rte_flow_action){
4804                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
4805                         .conf = &attributes->queue,
4806                 };
4807                 break;
4808         case RTE_ETH_FDIR_REJECT:
4809                 attributes->actions[0] = (struct rte_flow_action){
4810                         .type = RTE_FLOW_ACTION_TYPE_DROP,
4811                 };
4812                 break;
4813         default:
4814                 DRV_LOG(ERR, "port %u invalid behavior %d",
4815                         dev->data->port_id,
4816                         fdir_filter->action.behavior);
4817                 rte_errno = ENOTSUP;
4818                 return -rte_errno;
4819         }
4820         attributes->queue.index = fdir_filter->action.rx_queue;
4821         /* Handle L3. */
4822         switch (fdir_filter->input.flow_type) {
4823         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4824         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4825         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4826                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
4827                         .src_addr = input->flow.ip4_flow.src_ip,
4828                         .dst_addr = input->flow.ip4_flow.dst_ip,
4829                         .time_to_live = input->flow.ip4_flow.ttl,
4830                         .type_of_service = input->flow.ip4_flow.tos,
4831                 };
4832                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
4833                         .src_addr = mask->ipv4_mask.src_ip,
4834                         .dst_addr = mask->ipv4_mask.dst_ip,
4835                         .time_to_live = mask->ipv4_mask.ttl,
4836                         .type_of_service = mask->ipv4_mask.tos,
4837                         .next_proto_id = mask->ipv4_mask.proto,
4838                 };
4839                 attributes->items[1] = (struct rte_flow_item){
4840                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
4841                         .spec = &attributes->l3,
4842                         .mask = &attributes->l3_mask,
4843                 };
4844                 break;
4845         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4846         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4847         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4848                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
4849                         .hop_limits = input->flow.ipv6_flow.hop_limits,
4850                         .proto = input->flow.ipv6_flow.proto,
4851                 };
4852
4853                 memcpy(attributes->l3.ipv6.hdr.src_addr,
4854                        input->flow.ipv6_flow.src_ip,
4855                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4856                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
4857                        input->flow.ipv6_flow.dst_ip,
4858                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4859                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
4860                        mask->ipv6_mask.src_ip,
4861                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4862                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
4863                        mask->ipv6_mask.dst_ip,
4864                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4865                 attributes->items[1] = (struct rte_flow_item){
4866                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
4867                         .spec = &attributes->l3,
4868                         .mask = &attributes->l3_mask,
4869                 };
4870                 break;
4871         default:
4872                 DRV_LOG(ERR, "port %u invalid flow type%d",
4873                         dev->data->port_id, fdir_filter->input.flow_type);
4874                 rte_errno = ENOTSUP;
4875                 return -rte_errno;
4876         }
4877         /* Handle L4. */
4878         switch (fdir_filter->input.flow_type) {
4879         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4880                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4881                         .src_port = input->flow.udp4_flow.src_port,
4882                         .dst_port = input->flow.udp4_flow.dst_port,
4883                 };
4884                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4885                         .src_port = mask->src_port_mask,
4886                         .dst_port = mask->dst_port_mask,
4887                 };
4888                 attributes->items[2] = (struct rte_flow_item){
4889                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4890                         .spec = &attributes->l4,
4891                         .mask = &attributes->l4_mask,
4892                 };
4893                 break;
4894         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4895                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4896                         .src_port = input->flow.tcp4_flow.src_port,
4897                         .dst_port = input->flow.tcp4_flow.dst_port,
4898                 };
4899                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4900                         .src_port = mask->src_port_mask,
4901                         .dst_port = mask->dst_port_mask,
4902                 };
4903                 attributes->items[2] = (struct rte_flow_item){
4904                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4905                         .spec = &attributes->l4,
4906                         .mask = &attributes->l4_mask,
4907                 };
4908                 break;
4909         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4910                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4911                         .src_port = input->flow.udp6_flow.src_port,
4912                         .dst_port = input->flow.udp6_flow.dst_port,
4913                 };
4914                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4915                         .src_port = mask->src_port_mask,
4916                         .dst_port = mask->dst_port_mask,
4917                 };
4918                 attributes->items[2] = (struct rte_flow_item){
4919                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4920                         .spec = &attributes->l4,
4921                         .mask = &attributes->l4_mask,
4922                 };
4923                 break;
4924         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4925                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4926                         .src_port = input->flow.tcp6_flow.src_port,
4927                         .dst_port = input->flow.tcp6_flow.dst_port,
4928                 };
4929                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4930                         .src_port = mask->src_port_mask,
4931                         .dst_port = mask->dst_port_mask,
4932                 };
4933                 attributes->items[2] = (struct rte_flow_item){
4934                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4935                         .spec = &attributes->l4,
4936                         .mask = &attributes->l4_mask,
4937                 };
4938                 break;
4939         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4940         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4941                 break;
4942         default:
4943                 DRV_LOG(ERR, "port %u invalid flow type%d",
4944                         dev->data->port_id, fdir_filter->input.flow_type);
4945                 rte_errno = ENOTSUP;
4946                 return -rte_errno;
4947         }
4948         return 0;
4949 }
4950
4951 #define FLOW_FDIR_CMP(f1, f2, fld) \
4952         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
4953
4954 /**
4955  * Compare two FDIR flows. If items and actions are identical, the two flows are
4956  * regarded as same.
4957  *
4958  * @param dev
4959  *   Pointer to Ethernet device.
4960  * @param f1
4961  *   FDIR flow to compare.
4962  * @param f2
4963  *   FDIR flow to compare.
4964  *
4965  * @return
4966  *   Zero on match, 1 otherwise.
4967  */
4968 static int
4969 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
4970 {
4971         if (FLOW_FDIR_CMP(f1, f2, attr) ||
4972             FLOW_FDIR_CMP(f1, f2, l2) ||
4973             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
4974             FLOW_FDIR_CMP(f1, f2, l3) ||
4975             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
4976             FLOW_FDIR_CMP(f1, f2, l4) ||
4977             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
4978             FLOW_FDIR_CMP(f1, f2, actions[0].type))
4979                 return 1;
4980         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
4981             FLOW_FDIR_CMP(f1, f2, queue))
4982                 return 1;
4983         return 0;
4984 }
4985
4986 /**
4987  * Search device flow list to find out a matched FDIR flow.
4988  *
4989  * @param dev
4990  *   Pointer to Ethernet device.
4991  * @param fdir_flow
4992  *   FDIR flow to lookup.
4993  *
4994  * @return
4995  *   Pointer of flow if found, NULL otherwise.
4996  */
4997 static struct rte_flow *
4998 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
4999 {
5000         struct mlx5_priv *priv = dev->data->dev_private;
5001         struct rte_flow *flow = NULL;
5002
5003         assert(fdir_flow);
5004         TAILQ_FOREACH(flow, &priv->flows, next) {
5005                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
5006                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
5007                                 dev->data->port_id, (void *)flow);
5008                         break;
5009                 }
5010         }
5011         return flow;
5012 }
5013
5014 /**
5015  * Add new flow director filter and store it in list.
5016  *
5017  * @param dev
5018  *   Pointer to Ethernet device.
5019  * @param fdir_filter
5020  *   Flow director filter to add.
5021  *
5022  * @return
5023  *   0 on success, a negative errno value otherwise and rte_errno is set.
5024  */
5025 static int
5026 flow_fdir_filter_add(struct rte_eth_dev *dev,
5027                      const struct rte_eth_fdir_filter *fdir_filter)
5028 {
5029         struct mlx5_priv *priv = dev->data->dev_private;
5030         struct mlx5_fdir *fdir_flow;
5031         struct rte_flow *flow;
5032         int ret;
5033
5034         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
5035         if (!fdir_flow) {
5036                 rte_errno = ENOMEM;
5037                 return -rte_errno;
5038         }
5039         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
5040         if (ret)
5041                 goto error;
5042         flow = flow_fdir_filter_lookup(dev, fdir_flow);
5043         if (flow) {
5044                 rte_errno = EEXIST;
5045                 goto error;
5046         }
5047         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
5048                                 fdir_flow->items, fdir_flow->actions, true,
5049                                 NULL);
5050         if (!flow)
5051                 goto error;
5052         assert(!flow->fdir);
5053         flow->fdir = fdir_flow;
5054         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
5055                 dev->data->port_id, (void *)flow);
5056         return 0;
5057 error:
5058         rte_free(fdir_flow);
5059         return -rte_errno;
5060 }
5061
5062 /**
5063  * Delete specific filter.
5064  *
5065  * @param dev
5066  *   Pointer to Ethernet device.
5067  * @param fdir_filter
5068  *   Filter to be deleted.
5069  *
5070  * @return
5071  *   0 on success, a negative errno value otherwise and rte_errno is set.
5072  */
5073 static int
5074 flow_fdir_filter_delete(struct rte_eth_dev *dev,
5075                         const struct rte_eth_fdir_filter *fdir_filter)
5076 {
5077         struct mlx5_priv *priv = dev->data->dev_private;
5078         struct rte_flow *flow;
5079         struct mlx5_fdir fdir_flow = {
5080                 .attr.group = 0,
5081         };
5082         int ret;
5083
5084         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
5085         if (ret)
5086                 return -rte_errno;
5087         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
5088         if (!flow) {
5089                 rte_errno = ENOENT;
5090                 return -rte_errno;
5091         }
5092         flow_list_destroy(dev, &priv->flows, flow);
5093         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
5094                 dev->data->port_id, (void *)flow);
5095         return 0;
5096 }
5097
5098 /**
5099  * Update queue for specific filter.
5100  *
5101  * @param dev
5102  *   Pointer to Ethernet device.
5103  * @param fdir_filter
5104  *   Filter to be updated.
5105  *
5106  * @return
5107  *   0 on success, a negative errno value otherwise and rte_errno is set.
5108  */
5109 static int
5110 flow_fdir_filter_update(struct rte_eth_dev *dev,
5111                         const struct rte_eth_fdir_filter *fdir_filter)
5112 {
5113         int ret;
5114
5115         ret = flow_fdir_filter_delete(dev, fdir_filter);
5116         if (ret)
5117                 return ret;
5118         return flow_fdir_filter_add(dev, fdir_filter);
5119 }
5120
5121 /**
5122  * Flush all filters.
5123  *
5124  * @param dev
5125  *   Pointer to Ethernet device.
5126  */
5127 static void
5128 flow_fdir_filter_flush(struct rte_eth_dev *dev)
5129 {
5130         struct mlx5_priv *priv = dev->data->dev_private;
5131
5132         mlx5_flow_list_flush(dev, &priv->flows);
5133 }
5134
5135 /**
5136  * Get flow director information.
5137  *
5138  * @param dev
5139  *   Pointer to Ethernet device.
5140  * @param[out] fdir_info
5141  *   Resulting flow director information.
5142  */
5143 static void
5144 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
5145 {
5146         struct rte_eth_fdir_masks *mask =
5147                 &dev->data->dev_conf.fdir_conf.mask;
5148
5149         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
5150         fdir_info->guarant_spc = 0;
5151         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
5152         fdir_info->max_flexpayload = 0;
5153         fdir_info->flow_types_mask[0] = 0;
5154         fdir_info->flex_payload_unit = 0;
5155         fdir_info->max_flex_payload_segment_num = 0;
5156         fdir_info->flex_payload_limit = 0;
5157         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
5158 }
5159
5160 /**
5161  * Deal with flow director operations.
5162  *
5163  * @param dev
5164  *   Pointer to Ethernet device.
5165  * @param filter_op
5166  *   Operation to perform.
5167  * @param arg
5168  *   Pointer to operation-specific structure.
5169  *
5170  * @return
5171  *   0 on success, a negative errno value otherwise and rte_errno is set.
5172  */
5173 static int
5174 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
5175                     void *arg)
5176 {
5177         enum rte_fdir_mode fdir_mode =
5178                 dev->data->dev_conf.fdir_conf.mode;
5179
5180         if (filter_op == RTE_ETH_FILTER_NOP)
5181                 return 0;
5182         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
5183             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
5184                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
5185                         dev->data->port_id, fdir_mode);
5186                 rte_errno = EINVAL;
5187                 return -rte_errno;
5188         }
5189         switch (filter_op) {
5190         case RTE_ETH_FILTER_ADD:
5191                 return flow_fdir_filter_add(dev, arg);
5192         case RTE_ETH_FILTER_UPDATE:
5193                 return flow_fdir_filter_update(dev, arg);
5194         case RTE_ETH_FILTER_DELETE:
5195                 return flow_fdir_filter_delete(dev, arg);
5196         case RTE_ETH_FILTER_FLUSH:
5197                 flow_fdir_filter_flush(dev);
5198                 break;
5199         case RTE_ETH_FILTER_INFO:
5200                 flow_fdir_info_get(dev, arg);
5201                 break;
5202         default:
5203                 DRV_LOG(DEBUG, "port %u unknown operation %u",
5204                         dev->data->port_id, filter_op);
5205                 rte_errno = EINVAL;
5206                 return -rte_errno;
5207         }
5208         return 0;
5209 }
5210
5211 /**
5212  * Manage filter operations.
5213  *
5214  * @param dev
5215  *   Pointer to Ethernet device structure.
5216  * @param filter_type
5217  *   Filter type.
5218  * @param filter_op
5219  *   Operation to perform.
5220  * @param arg
5221  *   Pointer to operation-specific structure.
5222  *
5223  * @return
5224  *   0 on success, a negative errno value otherwise and rte_errno is set.
5225  */
5226 int
5227 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
5228                      enum rte_filter_type filter_type,
5229                      enum rte_filter_op filter_op,
5230                      void *arg)
5231 {
5232         switch (filter_type) {
5233         case RTE_ETH_FILTER_GENERIC:
5234                 if (filter_op != RTE_ETH_FILTER_GET) {
5235                         rte_errno = EINVAL;
5236                         return -rte_errno;
5237                 }
5238                 *(const void **)arg = &mlx5_flow_ops;
5239                 return 0;
5240         case RTE_ETH_FILTER_FDIR:
5241                 return flow_fdir_ctrl_func(dev, filter_op, arg);
5242         default:
5243                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
5244                         dev->data->port_id, filter_type);
5245                 rte_errno = ENOTSUP;
5246                 return -rte_errno;
5247         }
5248         return 0;
5249 }
5250
5251 /**
5252  * Create the needed meter and suffix tables.
5253  *
5254  * @param[in] dev
5255  *   Pointer to Ethernet device.
5256  * @param[in] fm
5257  *   Pointer to the flow meter.
5258  *
5259  * @return
5260  *   Pointer to table set on success, NULL otherwise.
5261  */
5262 struct mlx5_meter_domains_infos *
5263 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
5264                           const struct mlx5_flow_meter *fm)
5265 {
5266         const struct mlx5_flow_driver_ops *fops;
5267
5268         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5269         return fops->create_mtr_tbls(dev, fm);
5270 }
5271
5272 /**
5273  * Destroy the meter table set.
5274  *
5275  * @param[in] dev
5276  *   Pointer to Ethernet device.
5277  * @param[in] tbl
5278  *   Pointer to the meter table set.
5279  *
5280  * @return
5281  *   0 on success.
5282  */
5283 int
5284 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
5285                            struct mlx5_meter_domains_infos *tbls)
5286 {
5287         const struct mlx5_flow_driver_ops *fops;
5288
5289         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5290         return fops->destroy_mtr_tbls(dev, tbls);
5291 }
5292
5293 /**
5294  * Create policer rules.
5295  *
5296  * @param[in] dev
5297  *   Pointer to Ethernet device.
5298  * @param[in] fm
5299  *   Pointer to flow meter structure.
5300  * @param[in] attr
5301  *   Pointer to flow attributes.
5302  *
5303  * @return
5304  *   0 on success, -1 otherwise.
5305  */
5306 int
5307 mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
5308                                struct mlx5_flow_meter *fm,
5309                                const struct rte_flow_attr *attr)
5310 {
5311         const struct mlx5_flow_driver_ops *fops;
5312
5313         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5314         return fops->create_policer_rules(dev, fm, attr);
5315 }
5316
5317 /**
5318  * Destroy policer rules.
5319  *
5320  * @param[in] fm
5321  *   Pointer to flow meter structure.
5322  * @param[in] attr
5323  *   Pointer to flow attributes.
5324  *
5325  * @return
5326  *   0 on success, -1 otherwise.
5327  */
5328 int
5329 mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
5330                                 struct mlx5_flow_meter *fm,
5331                                 const struct rte_flow_attr *attr)
5332 {
5333         const struct mlx5_flow_driver_ops *fops;
5334
5335         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5336         return fops->destroy_policer_rules(dev, fm, attr);
5337 }
5338
5339 /**
5340  * Allocate a counter.
5341  *
5342  * @param[in] dev
5343  *   Pointer to Ethernet device structure.
5344  *
5345  * @return
5346  *   Pointer to allocated counter  on success, NULL otherwise.
5347  */
5348 struct mlx5_flow_counter *
5349 mlx5_counter_alloc(struct rte_eth_dev *dev)
5350 {
5351         const struct mlx5_flow_driver_ops *fops;
5352         struct rte_flow_attr attr = { .transfer = 0 };
5353
5354         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5355                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5356                 return fops->counter_alloc(dev);
5357         }
5358         DRV_LOG(ERR,
5359                 "port %u counter allocate is not supported.",
5360                  dev->data->port_id);
5361         return NULL;
5362 }
5363
5364 /**
5365  * Free a counter.
5366  *
5367  * @param[in] dev
5368  *   Pointer to Ethernet device structure.
5369  * @param[in] cnt
5370  *   Pointer to counter to be free.
5371  */
5372 void
5373 mlx5_counter_free(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt)
5374 {
5375         const struct mlx5_flow_driver_ops *fops;
5376         struct rte_flow_attr attr = { .transfer = 0 };
5377
5378         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5379                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5380                 fops->counter_free(dev, cnt);
5381                 return;
5382         }
5383         DRV_LOG(ERR,
5384                 "port %u counter free is not supported.",
5385                  dev->data->port_id);
5386 }
5387
5388 /**
5389  * Query counter statistics.
5390  *
5391  * @param[in] dev
5392  *   Pointer to Ethernet device structure.
5393  * @param[in] cnt
5394  *   Pointer to counter to query.
5395  * @param[in] clear
5396  *   Set to clear counter statistics.
5397  * @param[out] pkts
5398  *   The counter hits packets number to save.
5399  * @param[out] bytes
5400  *   The counter hits bytes number to save.
5401  *
5402  * @return
5403  *   0 on success, a negative errno value otherwise.
5404  */
5405 int
5406 mlx5_counter_query(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt,
5407                    bool clear, uint64_t *pkts, uint64_t *bytes)
5408 {
5409         const struct mlx5_flow_driver_ops *fops;
5410         struct rte_flow_attr attr = { .transfer = 0 };
5411
5412         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5413                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5414                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
5415         }
5416         DRV_LOG(ERR,
5417                 "port %u counter query is not supported.",
5418                  dev->data->port_id);
5419         return -ENOTSUP;
5420 }
5421
5422 #define MLX5_POOL_QUERY_FREQ_US 1000000
5423
5424 /**
5425  * Set the periodic procedure for triggering asynchronous batch queries for all
5426  * the counter pools.
5427  *
5428  * @param[in] sh
5429  *   Pointer to mlx5_ibv_shared object.
5430  */
5431 void
5432 mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
5433 {
5434         struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
5435         uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
5436         uint32_t us;
5437
5438         cont = MLX5_CNT_CONTAINER(sh, 1, 0);
5439         pools_n += rte_atomic16_read(&cont->n_valid);
5440         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
5441         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
5442         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
5443                 sh->cmng.query_thread_on = 0;
5444                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
5445         } else {
5446                 sh->cmng.query_thread_on = 1;
5447         }
5448 }
5449
5450 /**
5451  * The periodic procedure for triggering asynchronous batch queries for all the
5452  * counter pools. This function is probably called by the host thread.
5453  *
5454  * @param[in] arg
5455  *   The parameter for the alarm process.
5456  */
5457 void
5458 mlx5_flow_query_alarm(void *arg)
5459 {
5460         struct mlx5_ibv_shared *sh = arg;
5461         struct mlx5_devx_obj *dcs;
5462         uint16_t offset;
5463         int ret;
5464         uint8_t batch = sh->cmng.batch;
5465         uint16_t pool_index = sh->cmng.pool_index;
5466         struct mlx5_pools_container *cont;
5467         struct mlx5_pools_container *mcont;
5468         struct mlx5_flow_counter_pool *pool;
5469
5470         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
5471                 goto set_alarm;
5472 next_container:
5473         cont = MLX5_CNT_CONTAINER(sh, batch, 1);
5474         mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
5475         /* Check if resize was done and need to flip a container. */
5476         if (cont != mcont) {
5477                 if (cont->pools) {
5478                         /* Clean the old container. */
5479                         rte_free(cont->pools);
5480                         memset(cont, 0, sizeof(*cont));
5481                 }
5482                 rte_cio_wmb();
5483                  /* Flip the host container. */
5484                 sh->cmng.mhi[batch] ^= (uint8_t)2;
5485                 cont = mcont;
5486         }
5487         if (!cont->pools) {
5488                 /* 2 empty containers case is unexpected. */
5489                 if (unlikely(batch != sh->cmng.batch))
5490                         goto set_alarm;
5491                 batch ^= 0x1;
5492                 pool_index = 0;
5493                 goto next_container;
5494         }
5495         pool = cont->pools[pool_index];
5496         if (pool->raw_hw)
5497                 /* There is a pool query in progress. */
5498                 goto set_alarm;
5499         pool->raw_hw =
5500                 LIST_FIRST(&sh->cmng.free_stat_raws);
5501         if (!pool->raw_hw)
5502                 /* No free counter statistics raw memory. */
5503                 goto set_alarm;
5504         dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
5505                                                               (&pool->a64_dcs);
5506         offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
5507         ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
5508                                                offset, NULL, NULL,
5509                                                pool->raw_hw->mem_mng->dm->id,
5510                                                (void *)(uintptr_t)
5511                                                (pool->raw_hw->data + offset),
5512                                                sh->devx_comp,
5513                                                (uint64_t)(uintptr_t)pool);
5514         if (ret) {
5515                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
5516                         " %d", pool->min_dcs->id);
5517                 pool->raw_hw = NULL;
5518                 goto set_alarm;
5519         }
5520         pool->raw_hw->min_dcs_id = dcs->id;
5521         LIST_REMOVE(pool->raw_hw, next);
5522         sh->cmng.pending_queries++;
5523         pool_index++;
5524         if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
5525                 batch ^= 0x1;
5526                 pool_index = 0;
5527         }
5528 set_alarm:
5529         sh->cmng.batch = batch;
5530         sh->cmng.pool_index = pool_index;
5531         mlx5_set_query_alarm(sh);
5532 }
5533
5534 /**
5535  * Handler for the HW respond about ready values from an asynchronous batch
5536  * query. This function is probably called by the host thread.
5537  *
5538  * @param[in] sh
5539  *   The pointer to the shared IB device context.
5540  * @param[in] async_id
5541  *   The Devx async ID.
5542  * @param[in] status
5543  *   The status of the completion.
5544  */
5545 void
5546 mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
5547                                   uint64_t async_id, int status)
5548 {
5549         struct mlx5_flow_counter_pool *pool =
5550                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
5551         struct mlx5_counter_stats_raw *raw_to_free;
5552
5553         if (unlikely(status)) {
5554                 raw_to_free = pool->raw_hw;
5555         } else {
5556                 raw_to_free = pool->raw;
5557                 rte_spinlock_lock(&pool->sl);
5558                 pool->raw = pool->raw_hw;
5559                 rte_spinlock_unlock(&pool->sl);
5560                 rte_atomic64_add(&pool->query_gen, 1);
5561                 /* Be sure the new raw counters data is updated in memory. */
5562                 rte_cio_wmb();
5563         }
5564         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
5565         pool->raw_hw = NULL;
5566         sh->cmng.pending_queries--;
5567 }
5568
5569 /**
5570  * Translate the rte_flow group index to HW table value.
5571  *
5572  * @param[in] attributes
5573  *   Pointer to flow attributes
5574  * @param[in] external
5575  *   Value is part of flow rule created by request external to PMD.
5576  * @param[in] group
5577  *   rte_flow group index value.
5578  * @param[out] table
5579  *   HW table value.
5580  * @param[out] error
5581  *   Pointer to error structure.
5582  *
5583  * @return
5584  *   0 on success, a negative errno value otherwise and rte_errno is set.
5585  */
5586 int
5587 mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
5588                          uint32_t group, uint32_t *table,
5589                          struct rte_flow_error *error)
5590 {
5591         if (attributes->transfer && external) {
5592                 if (group == UINT32_MAX)
5593                         return rte_flow_error_set
5594                                                 (error, EINVAL,
5595                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
5596                                                  NULL,
5597                                                  "group index not supported");
5598                 *table = group + 1;
5599         } else {
5600                 *table = group;
5601         }
5602         return 0;
5603 }
5604
5605 /**
5606  * Discover availability of metadata reg_c's.
5607  *
5608  * Iteratively use test flows to check availability.
5609  *
5610  * @param[in] dev
5611  *   Pointer to the Ethernet device structure.
5612  *
5613  * @return
5614  *   0 on success, a negative errno value otherwise and rte_errno is set.
5615  */
5616 int
5617 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
5618 {
5619         struct mlx5_priv *priv = dev->data->dev_private;
5620         struct mlx5_dev_config *config = &priv->config;
5621         enum modify_reg idx;
5622         int n = 0;
5623
5624         /* reg_c[0] and reg_c[1] are reserved. */
5625         config->flow_mreg_c[n++] = REG_C_0;
5626         config->flow_mreg_c[n++] = REG_C_1;
5627         /* Discover availability of other reg_c's. */
5628         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
5629                 struct rte_flow_attr attr = {
5630                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5631                         .priority = MLX5_FLOW_PRIO_RSVD,
5632                         .ingress = 1,
5633                 };
5634                 struct rte_flow_item items[] = {
5635                         [0] = {
5636                                 .type = RTE_FLOW_ITEM_TYPE_END,
5637                         },
5638                 };
5639                 struct rte_flow_action actions[] = {
5640                         [0] = {
5641                                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5642                                 .conf = &(struct mlx5_flow_action_copy_mreg){
5643                                         .src = REG_C_1,
5644                                         .dst = idx,
5645                                 },
5646                         },
5647                         [1] = {
5648                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5649                                 .conf = &(struct rte_flow_action_jump){
5650                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5651                                 },
5652                         },
5653                         [2] = {
5654                                 .type = RTE_FLOW_ACTION_TYPE_END,
5655                         },
5656                 };
5657                 struct rte_flow *flow;
5658                 struct rte_flow_error error;
5659
5660                 if (!config->dv_flow_en)
5661                         break;
5662                 /* Create internal flow, validation skips copy action. */
5663                 flow = flow_list_create(dev, NULL, &attr, items,
5664                                         actions, false, &error);
5665                 if (!flow)
5666                         continue;
5667                 if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
5668                         config->flow_mreg_c[n++] = idx;
5669                 flow_list_destroy(dev, NULL, flow);
5670         }
5671         for (; n < MLX5_MREG_C_NUM; ++n)
5672                 config->flow_mreg_c[n] = REG_NONE;
5673         return 0;
5674 }
5675
5676 /**
5677  * Dump flow raw hw data to file
5678  *
5679  * @param[in] dev
5680  *    The pointer to Ethernet device.
5681  * @param[in] file
5682  *   A pointer to a file for output.
5683  * @param[out] error
5684  *   Perform verbose error reporting if not NULL. PMDs initialize this
5685  *   structure in case of error only.
5686  * @return
5687  *   0 on success, a nagative value otherwise.
5688  */
5689 int
5690 mlx5_flow_dev_dump(struct rte_eth_dev *dev,
5691                    FILE *file,
5692                    struct rte_flow_error *error __rte_unused)
5693 {
5694         struct mlx5_priv *priv = dev->data->dev_private;
5695
5696         return mlx5_devx_cmd_flow_dump(priv->sh, file);
5697 }