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 #include <stdbool.h>
  12
  13 /* Verbs header. */
  14 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  15 #ifdef PEDANTIC
  16 #pragma GCC diagnostic ignored "-Wpedantic"
  17 #endif
  18 #include <infiniband/verbs.h>
  19 #ifdef PEDANTIC
  20 #pragma GCC diagnostic error "-Wpedantic"
  21 #endif
  22
  23 #include <rte_common.h>
  24 #include <rte_ether.h>
  25 #include <rte_ethdev_driver.h>
  26 #include <rte_flow.h>
  27 #include <rte_flow_driver.h>
  28 #include <rte_malloc.h>
  29 #include <rte_ip.h>
  30
  31 #include <mlx5_glue.h>
  32 #include <mlx5_devx_cmds.h>
  33 #include <mlx5_prm.h>
  34
  35 #include "mlx5_defs.h"
  36 #include "mlx5.h"
  37 #include "mlx5_flow.h"
  38 #include "mlx5_rxtx.h"
  39
  40 /* Dev ops structure defined in mlx5.c */
  41 extern const struct eth_dev_ops mlx5_dev_ops;
  42 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  43
  44 /** Device flow drivers. */
  45 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  46 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  47 #endif
  48 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  49
  50 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  51
  52 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  53         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  54 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  55         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  56 #endif
  57         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  58         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  59 };
  60
  61 enum mlx5_expansion {
  62         MLX5_EXPANSION_ROOT,
  63         MLX5_EXPANSION_ROOT_OUTER,
  64         MLX5_EXPANSION_ROOT_ETH_VLAN,
  65         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  66         MLX5_EXPANSION_OUTER_ETH,
  67         MLX5_EXPANSION_OUTER_ETH_VLAN,
  68         MLX5_EXPANSION_OUTER_VLAN,
  69         MLX5_EXPANSION_OUTER_IPV4,
  70         MLX5_EXPANSION_OUTER_IPV4_UDP,
  71         MLX5_EXPANSION_OUTER_IPV4_TCP,
  72         MLX5_EXPANSION_OUTER_IPV6,
  73         MLX5_EXPANSION_OUTER_IPV6_UDP,
  74         MLX5_EXPANSION_OUTER_IPV6_TCP,
  75         MLX5_EXPANSION_VXLAN,
  76         MLX5_EXPANSION_VXLAN_GPE,
  77         MLX5_EXPANSION_GRE,
  78         MLX5_EXPANSION_MPLS,
  79         MLX5_EXPANSION_ETH,
  80         MLX5_EXPANSION_ETH_VLAN,
  81         MLX5_EXPANSION_VLAN,
  82         MLX5_EXPANSION_IPV4,
  83         MLX5_EXPANSION_IPV4_UDP,
  84         MLX5_EXPANSION_IPV4_TCP,
  85         MLX5_EXPANSION_IPV6,
  86         MLX5_EXPANSION_IPV6_UDP,
  87         MLX5_EXPANSION_IPV6_TCP,
  88 };
  89
  90 /** Supported expansion of items. */
  91 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  92         [MLX5_EXPANSION_ROOT] = {
  93                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  94                                                  MLX5_EXPANSION_IPV4,
  95                                                  MLX5_EXPANSION_IPV6),
  96                 .type = RTE_FLOW_ITEM_TYPE_END,
  97         },
  98         [MLX5_EXPANSION_ROOT_OUTER] = {
  99                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
 100                                                  MLX5_EXPANSION_OUTER_IPV4,
 101                                                  MLX5_EXPANSION_OUTER_IPV6),
 102                 .type = RTE_FLOW_ITEM_TYPE_END,
 103         },
 104         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 105                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 106                 .type = RTE_FLOW_ITEM_TYPE_END,
 107         },
 108         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 109                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 110                 .type = RTE_FLOW_ITEM_TYPE_END,
 111         },
 112         [MLX5_EXPANSION_OUTER_ETH] = {
 113                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 114                                                  MLX5_EXPANSION_OUTER_IPV6,
 115                                                  MLX5_EXPANSION_MPLS),
 116                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 117                 .rss_types = 0,
 118         },
 119         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 120                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 121                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 122                 .rss_types = 0,
 123         },
 124         [MLX5_EXPANSION_OUTER_VLAN] = {
 125                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 126                                                  MLX5_EXPANSION_OUTER_IPV6),
 127                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 128         },
 129         [MLX5_EXPANSION_OUTER_IPV4] = {
 130                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 131                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 132                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 133                          MLX5_EXPANSION_GRE,
 134                          MLX5_EXPANSION_IPV4,
 135                          MLX5_EXPANSION_IPV6),
 136                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 137                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 138                         ETH_RSS_NONFRAG_IPV4_OTHER,
 139         },
 140         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 141                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 142                                                  MLX5_EXPANSION_VXLAN_GPE),
 143                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 144                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 145         },
 146         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 147                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 148                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 149         },
 150         [MLX5_EXPANSION_OUTER_IPV6] = {
 151                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 152                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 153                          MLX5_EXPANSION_OUTER_IPV6_TCP,
 154                          MLX5_EXPANSION_IPV4,
 155                          MLX5_EXPANSION_IPV6),
 156                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 157                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 158                         ETH_RSS_NONFRAG_IPV6_OTHER,
 159         },
 160         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 161                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 162                                                  MLX5_EXPANSION_VXLAN_GPE),
 163                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 164                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 165         },
 166         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 167                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 168                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 169         },
 170         [MLX5_EXPANSION_VXLAN] = {
 171                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 172                                                  MLX5_EXPANSION_IPV4,
 173                                                  MLX5_EXPANSION_IPV6),
 174                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 175         },
 176         [MLX5_EXPANSION_VXLAN_GPE] = {
 177                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 178                                                  MLX5_EXPANSION_IPV4,
 179                                                  MLX5_EXPANSION_IPV6),
 180                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 181         },
 182         [MLX5_EXPANSION_GRE] = {
 183                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 184                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 185         },
 186         [MLX5_EXPANSION_MPLS] = {
 187                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 188                                                  MLX5_EXPANSION_IPV6),
 189                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 190         },
 191         [MLX5_EXPANSION_ETH] = {
 192                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 193                                                  MLX5_EXPANSION_IPV6),
 194                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 195         },
 196         [MLX5_EXPANSION_ETH_VLAN] = {
 197                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 198                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 199         },
 200         [MLX5_EXPANSION_VLAN] = {
 201                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 202                                                  MLX5_EXPANSION_IPV6),
 203                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 204         },
 205         [MLX5_EXPANSION_IPV4] = {
 206                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 207                                                  MLX5_EXPANSION_IPV4_TCP),
 208                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 209                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 210                         ETH_RSS_NONFRAG_IPV4_OTHER,
 211         },
 212         [MLX5_EXPANSION_IPV4_UDP] = {
 213                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 214                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 215         },
 216         [MLX5_EXPANSION_IPV4_TCP] = {
 217                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 218                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 219         },
 220         [MLX5_EXPANSION_IPV6] = {
 221                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 222                                                  MLX5_EXPANSION_IPV6_TCP),
 223                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 224                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 225                         ETH_RSS_NONFRAG_IPV6_OTHER,
 226         },
 227         [MLX5_EXPANSION_IPV6_UDP] = {
 228                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 229                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 230         },
 231         [MLX5_EXPANSION_IPV6_TCP] = {
 232                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 233                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 234         },
 235 };
 236
 237 static const struct rte_flow_ops mlx5_flow_ops = {
 238         .validate = mlx5_flow_validate,
 239         .create = mlx5_flow_create,
 240         .destroy = mlx5_flow_destroy,
 241         .flush = mlx5_flow_flush,
 242         .isolate = mlx5_flow_isolate,
 243         .query = mlx5_flow_query,
 244         .dev_dump = mlx5_flow_dev_dump,
 245 };
 246
 247 /* Convert FDIR request to Generic flow. */
 248 struct mlx5_fdir {
 249         struct rte_flow_attr attr;
 250         struct rte_flow_item items[4];
 251         struct rte_flow_item_eth l2;
 252         struct rte_flow_item_eth l2_mask;
 253         union {
 254                 struct rte_flow_item_ipv4 ipv4;
 255                 struct rte_flow_item_ipv6 ipv6;
 256         } l3;
 257         union {
 258                 struct rte_flow_item_ipv4 ipv4;
 259                 struct rte_flow_item_ipv6 ipv6;
 260         } l3_mask;
 261         union {
 262                 struct rte_flow_item_udp udp;
 263                 struct rte_flow_item_tcp tcp;
 264         } l4;
 265         union {
 266                 struct rte_flow_item_udp udp;
 267                 struct rte_flow_item_tcp tcp;
 268         } l4_mask;
 269         struct rte_flow_action actions[2];
 270         struct rte_flow_action_queue queue;
 271 };
 272
 273 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 274 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 275         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 276 };
 277
 278 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 279 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 280         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 281         { 9, 10, 11 }, { 12, 13, 14 },
 282 };
 283
 284 /* Tunnel information. */
 285 struct mlx5_flow_tunnel_info {
 286         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 287         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 288 };
 289
 290 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 291         {
 292                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 293                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 294         },
 295         {
 296                 .tunnel = MLX5_FLOW_LAYER_GENEVE,
 297                 .ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
 298         },
 299         {
 300                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 301                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 302         },
 303         {
 304                 .tunnel = MLX5_FLOW_LAYER_GRE,
 305                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 306         },
 307         {
 308                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 309                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 310         },
 311         {
 312                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 313                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 314         },
 315         {
 316                 .tunnel = MLX5_FLOW_LAYER_NVGRE,
 317                 .ptype = RTE_PTYPE_TUNNEL_NVGRE,
 318         },
 319         {
 320                 .tunnel = MLX5_FLOW_LAYER_IPIP,
 321                 .ptype = RTE_PTYPE_TUNNEL_IP,
 322         },
 323         {
 324                 .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
 325                 .ptype = RTE_PTYPE_TUNNEL_IP,
 326         },
 327         {
 328                 .tunnel = MLX5_FLOW_LAYER_GTP,
 329                 .ptype = RTE_PTYPE_TUNNEL_GTPU,
 330         },
 331 };
 332
 333 /**
 334  * Translate tag ID to register.
 335  *
 336  * @param[in] dev
 337  *   Pointer to the Ethernet device structure.
 338  * @param[in] feature
 339  *   The feature that request the register.
 340  * @param[in] id
 341  *   The request register ID.
 342  * @param[out] error
 343  *   Error description in case of any.
 344  *
 345  * @return
 346  *   The request register on success, a negative errno
 347  *   value otherwise and rte_errno is set.
 348  */
 349 int
 350 mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 351                      enum mlx5_feature_name feature,
 352                      uint32_t id,
 353                      struct rte_flow_error *error)
 354 {
 355         struct mlx5_priv *priv = dev->data->dev_private;
 356         struct mlx5_dev_config *config = &priv->config;
 357         enum modify_reg start_reg;
 358         bool skip_mtr_reg = false;
 359
 360         switch (feature) {
 361         case MLX5_HAIRPIN_RX:
 362                 return REG_B;
 363         case MLX5_HAIRPIN_TX:
 364                 return REG_A;
 365         case MLX5_METADATA_RX:
 366                 switch (config->dv_xmeta_en) {
 367                 case MLX5_XMETA_MODE_LEGACY:
 368                         return REG_B;
 369                 case MLX5_XMETA_MODE_META16:
 370                         return REG_C_0;
 371                 case MLX5_XMETA_MODE_META32:
 372                         return REG_C_1;
 373                 }
 374                 break;
 375         case MLX5_METADATA_TX:
 376                 return REG_A;
 377         case MLX5_METADATA_FDB:
 378                 switch (config->dv_xmeta_en) {
 379                 case MLX5_XMETA_MODE_LEGACY:
 380                         return REG_NONE;
 381                 case MLX5_XMETA_MODE_META16:
 382                         return REG_C_0;
 383                 case MLX5_XMETA_MODE_META32:
 384                         return REG_C_1;
 385                 }
 386                 break;
 387         case MLX5_FLOW_MARK:
 388                 switch (config->dv_xmeta_en) {
 389                 case MLX5_XMETA_MODE_LEGACY:
 390                         return REG_NONE;
 391                 case MLX5_XMETA_MODE_META16:
 392                         return REG_C_1;
 393                 case MLX5_XMETA_MODE_META32:
 394                         return REG_C_0;
 395                 }
 396                 break;
 397         case MLX5_MTR_SFX:
 398                 /*
 399                  * If meter color and flow match share one register, flow match
 400                  * should use the meter color register for match.
 401                  */
 402                 if (priv->mtr_reg_share)
 403                         return priv->mtr_color_reg;
 404                 else
 405                         return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 406                                REG_C_3;
 407         case MLX5_MTR_COLOR:
 408                 MLX5_ASSERT(priv->mtr_color_reg != REG_NONE);
 409                 return priv->mtr_color_reg;
 410         case MLX5_COPY_MARK:
 411                 /*
 412                  * Metadata COPY_MARK register using is in meter suffix sub
 413                  * flow while with meter. It's safe to share the same register.
 414                  */
 415                 return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 416         case MLX5_APP_TAG:
 417                 /*
 418                  * If meter is enable, it will engage the register for color
 419                  * match and flow match. If meter color match is not using the
 420                  * REG_C_2, need to skip the REG_C_x be used by meter color
 421                  * match.
 422                  * If meter is disable, free to use all available registers.
 423                  */
 424                 start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 425                             (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 426                 skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 427                 if (id > (REG_C_7 - start_reg))
 428                         return rte_flow_error_set(error, EINVAL,
 429                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 430                                                   NULL, "invalid tag id");
 431                 if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
 432                         return rte_flow_error_set(error, ENOTSUP,
 433                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 434                                                   NULL, "unsupported tag id");
 435                 /*
 436                  * This case means meter is using the REG_C_x great than 2.
 437                  * Take care not to conflict with meter color REG_C_x.
 438                  * If the available index REG_C_y >= REG_C_x, skip the
 439                  * color register.
 440                  */
 441                 if (skip_mtr_reg && config->flow_mreg_c
 442                     [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
 443                         if (config->flow_mreg_c
 444                             [id + 1 + start_reg - REG_C_0] != REG_NONE)
 445                                 return config->flow_mreg_c
 446                                                [id + 1 + start_reg - REG_C_0];
 447                         return rte_flow_error_set(error, ENOTSUP,
 448                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 449                                                   NULL, "unsupported tag id");
 450                 }
 451                 return config->flow_mreg_c[id + start_reg - REG_C_0];
 452         }
 453         MLX5_ASSERT(false);
 454         return rte_flow_error_set(error, EINVAL,
 455                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 456                                   NULL, "invalid feature name");
 457 }
 458
 459 /**
 460  * Check extensive flow metadata register support.
 461  *
 462  * @param dev
 463  *   Pointer to rte_eth_dev structure.
 464  *
 465  * @return
 466  *   True if device supports extensive flow metadata register, otherwise false.
 467  */
 468 bool
 469 mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
 470 {
 471         struct mlx5_priv *priv = dev->data->dev_private;
 472         struct mlx5_dev_config *config = &priv->config;
 473
 474         /*
 475          * Having available reg_c can be regarded inclusively as supporting
 476          * extensive flow metadata register, which could mean,
 477          * - metadata register copy action by modify header.
 478          * - 16 modify header actions is supported.
 479          * - reg_c's are preserved across different domain (FDB and NIC) on
 480          *   packet loopback by flow lookup miss.
 481          */
 482         return config->flow_mreg_c[2] != REG_NONE;
 483 }
 484
 485 /**
 486  * Discover the maximum number of priority available.
 487  *
 488  * @param[in] dev
 489  *   Pointer to the Ethernet device structure.
 490  *
 491  * @return
 492  *   number of supported flow priority on success, a negative errno
 493  *   value otherwise and rte_errno is set.
 494  */
 495 int
 496 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 497 {
 498         struct mlx5_priv *priv = dev->data->dev_private;
 499         struct {
 500                 struct ibv_flow_attr attr;
 501                 struct ibv_flow_spec_eth eth;
 502                 struct ibv_flow_spec_action_drop drop;
 503         } flow_attr = {
 504                 .attr = {
 505                         .num_of_specs = 2,
 506                         .port = (uint8_t)priv->ibv_port,
 507                 },
 508                 .eth = {
 509                         .type = IBV_FLOW_SPEC_ETH,
 510                         .size = sizeof(struct ibv_flow_spec_eth),
 511                 },
 512                 .drop = {
 513                         .size = sizeof(struct ibv_flow_spec_action_drop),
 514                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 515                 },
 516         };
 517         struct ibv_flow *flow;
 518         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 519         uint16_t vprio[] = { 8, 16 };
 520         int i;
 521         int priority = 0;
 522
 523         if (!drop) {
 524                 rte_errno = ENOTSUP;
 525                 return -rte_errno;
 526         }
 527         for (i = 0; i != RTE_DIM(vprio); i++) {
 528                 flow_attr.attr.priority = vprio[i] - 1;
 529                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 530                 if (!flow)
 531                         break;
 532                 claim_zero(mlx5_glue->destroy_flow(flow));
 533                 priority = vprio[i];
 534         }
 535         mlx5_hrxq_drop_release(dev);
 536         switch (priority) {
 537         case 8:
 538                 priority = RTE_DIM(priority_map_3);
 539                 break;
 540         case 16:
 541                 priority = RTE_DIM(priority_map_5);
 542                 break;
 543         default:
 544                 rte_errno = ENOTSUP;
 545                 DRV_LOG(ERR,
 546                         "port %u verbs maximum priority: %d expected 8/16",
 547                         dev->data->port_id, priority);
 548                 return -rte_errno;
 549         }
 550         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 551                 dev->data->port_id, priority);
 552         return priority;
 553 }
 554
 555 /**
 556  * Adjust flow priority based on the highest layer and the request priority.
 557  *
 558  * @param[in] dev
 559  *   Pointer to the Ethernet device structure.
 560  * @param[in] priority
 561  *   The rule base priority.
 562  * @param[in] subpriority
 563  *   The priority based on the items.
 564  *
 565  * @return
 566  *   The new priority.
 567  */
 568 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 569                                    uint32_t subpriority)
 570 {
 571         uint32_t res = 0;
 572         struct mlx5_priv *priv = dev->data->dev_private;
 573
 574         switch (priv->config.flow_prio) {
 575         case RTE_DIM(priority_map_3):
 576                 res = priority_map_3[priority][subpriority];
 577                 break;
 578         case RTE_DIM(priority_map_5):
 579                 res = priority_map_5[priority][subpriority];
 580                 break;
 581         }
 582         return  res;
 583 }
 584
 585 /**
 586  * Verify the @p item specifications (spec, last, mask) are compatible with the
 587  * NIC capabilities.
 588  *
 589  * @param[in] item
 590  *   Item specification.
 591  * @param[in] mask
 592  *   @p item->mask or flow default bit-masks.
 593  * @param[in] nic_mask
 594  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 595  * @param[in] size
 596  *   Bit-masks size in bytes.
 597  * @param[out] error
 598  *   Pointer to error structure.
 599  *
 600  * @return
 601  *   0 on success, a negative errno value otherwise and rte_errno is set.
 602  */
 603 int
 604 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 605                           const uint8_t *mask,
 606                           const uint8_t *nic_mask,
 607                           unsigned int size,
 608                           struct rte_flow_error *error)
 609 {
 610         unsigned int i;
 611
 612         MLX5_ASSERT(nic_mask);
 613         for (i = 0; i < size; ++i)
 614                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 615                         return rte_flow_error_set(error, ENOTSUP,
 616                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 617                                                   item,
 618                                                   "mask enables non supported"
 619                                                   " bits");
 620         if (!item->spec && (item->mask || item->last))
 621                 return rte_flow_error_set(error, EINVAL,
 622                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 623                                           "mask/last without a spec is not"
 624                                           " supported");
 625         if (item->spec && item->last) {
 626                 uint8_t spec[size];
 627                 uint8_t last[size];
 628                 unsigned int i;
 629                 int ret;
 630
 631                 for (i = 0; i < size; ++i) {
 632                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 633                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 634                 }
 635                 ret = memcmp(spec, last, size);
 636                 if (ret != 0)
 637                         return rte_flow_error_set(error, EINVAL,
 638                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 639                                                   item,
 640                                                   "range is not valid");
 641         }
 642         return 0;
 643 }
 644
 645 /**
 646  * Adjust the hash fields according to the @p flow information.
 647  *
 648  * @param[in] dev_flow.
 649  *   Pointer to the mlx5_flow.
 650  * @param[in] tunnel
 651  *   1 when the hash field is for a tunnel item.
 652  * @param[in] layer_types
 653  *   ETH_RSS_* types.
 654  * @param[in] hash_fields
 655  *   Item hash fields.
 656  *
 657  * @return
 658  *   The hash fields that should be used.
 659  */
 660 uint64_t
 661 mlx5_flow_hashfields_adjust(struct mlx5_flow_rss_desc *rss_desc,
 662                             int tunnel __rte_unused, uint64_t layer_types,
 663                             uint64_t hash_fields)
 664 {
 665 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 666         int rss_request_inner = rss_desc->level >= 2;
 667
 668         /* Check RSS hash level for tunnel. */
 669         if (tunnel && rss_request_inner)
 670                 hash_fields |= IBV_RX_HASH_INNER;
 671         else if (tunnel || rss_request_inner)
 672                 return 0;
 673 #endif
 674         /* Check if requested layer matches RSS hash fields. */
 675         if (!(rss_desc->types & layer_types))
 676                 return 0;
 677         return hash_fields;
 678 }
 679
 680 /**
 681  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 682  * if several tunnel rules are used on this queue, the tunnel ptype will be
 683  * cleared.
 684  *
 685  * @param rxq_ctrl
 686  *   Rx queue to update.
 687  */
 688 static void
 689 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 690 {
 691         unsigned int i;
 692         uint32_t tunnel_ptype = 0;
 693
 694         /* Look up for the ptype to use. */
 695         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 696                 if (!rxq_ctrl->flow_tunnels_n[i])
 697                         continue;
 698                 if (!tunnel_ptype) {
 699                         tunnel_ptype = tunnels_info[i].ptype;
 700                 } else {
 701                         tunnel_ptype = 0;
 702                         break;
 703                 }
 704         }
 705         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 706 }
 707
 708 /**
 709  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 710  * flow.
 711  *
 712  * @param[in] dev
 713  *   Pointer to the Ethernet device structure.
 714  * @param[in] dev_handle
 715  *   Pointer to device flow handle structure.
 716  */
 717 static void
 718 flow_drv_rxq_flags_set(struct rte_eth_dev *dev,
 719                        struct mlx5_flow_handle *dev_handle)
 720 {
 721         struct mlx5_priv *priv = dev->data->dev_private;
 722         const int mark = dev_handle->mark;
 723         const int tunnel = !!(dev_handle->layers & MLX5_FLOW_LAYER_TUNNEL);
 724         struct mlx5_hrxq *hrxq;
 725         unsigned int i;
 726
 727         if (dev_handle->fate_action != MLX5_FLOW_FATE_QUEUE)
 728                 return;
 729         hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
 730                               dev_handle->rix_hrxq);
 731         if (!hrxq)
 732                 return;
 733         for (i = 0; i != hrxq->ind_table->queues_n; ++i) {
 734                 int idx = hrxq->ind_table->queues[i];
 735                 struct mlx5_rxq_ctrl *rxq_ctrl =
 736                         container_of((*priv->rxqs)[idx],
 737                                      struct mlx5_rxq_ctrl, rxq);
 738
 739                 /*
 740                  * To support metadata register copy on Tx loopback,
 741                  * this must be always enabled (metadata may arive
 742                  * from other port - not from local flows only.
 743                  */
 744                 if (priv->config.dv_flow_en &&
 745                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 746                     mlx5_flow_ext_mreg_supported(dev)) {
 747                         rxq_ctrl->rxq.mark = 1;
 748                         rxq_ctrl->flow_mark_n = 1;
 749                 } else if (mark) {
 750                         rxq_ctrl->rxq.mark = 1;
 751                         rxq_ctrl->flow_mark_n++;
 752                 }
 753                 if (tunnel) {
 754                         unsigned int j;
 755
 756                         /* Increase the counter matching the flow. */
 757                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 758                                 if ((tunnels_info[j].tunnel &
 759                                      dev_handle->layers) ==
 760                                     tunnels_info[j].tunnel) {
 761                                         rxq_ctrl->flow_tunnels_n[j]++;
 762                                         break;
 763                                 }
 764                         }
 765                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 766                 }
 767         }
 768 }
 769
 770 /**
 771  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 772  *
 773  * @param[in] dev
 774  *   Pointer to the Ethernet device structure.
 775  * @param[in] flow
 776  *   Pointer to flow structure.
 777  */
 778 static void
 779 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 780 {
 781         struct mlx5_priv *priv = dev->data->dev_private;
 782         uint32_t handle_idx;
 783         struct mlx5_flow_handle *dev_handle;
 784
 785         SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
 786                        handle_idx, dev_handle, next)
 787                 flow_drv_rxq_flags_set(dev, dev_handle);
 788 }
 789
 790 /**
 791  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 792  * device flow if no other flow uses it with the same kind of request.
 793  *
 794  * @param dev
 795  *   Pointer to Ethernet device.
 796  * @param[in] dev_handle
 797  *   Pointer to the device flow handle structure.
 798  */
 799 static void
 800 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev,
 801                         struct mlx5_flow_handle *dev_handle)
 802 {
 803         struct mlx5_priv *priv = dev->data->dev_private;
 804         const int mark = dev_handle->mark;
 805         const int tunnel = !!(dev_handle->layers & MLX5_FLOW_LAYER_TUNNEL);
 806         struct mlx5_hrxq *hrxq;
 807         unsigned int i;
 808
 809         if (dev_handle->fate_action != MLX5_FLOW_FATE_QUEUE)
 810                 return;
 811         hrxq = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_HRXQ],
 812                               dev_handle->rix_hrxq);
 813         if (!hrxq)
 814                 return;
 815         MLX5_ASSERT(dev->data->dev_started);
 816         for (i = 0; i != hrxq->ind_table->queues_n; ++i) {
 817                 int idx = hrxq->ind_table->queues[i];
 818                 struct mlx5_rxq_ctrl *rxq_ctrl =
 819                         container_of((*priv->rxqs)[idx],
 820                                      struct mlx5_rxq_ctrl, rxq);
 821
 822                 if (priv->config.dv_flow_en &&
 823                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 824                     mlx5_flow_ext_mreg_supported(dev)) {
 825                         rxq_ctrl->rxq.mark = 1;
 826                         rxq_ctrl->flow_mark_n = 1;
 827                 } else if (mark) {
 828                         rxq_ctrl->flow_mark_n--;
 829                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 830                 }
 831                 if (tunnel) {
 832                         unsigned int j;
 833
 834                         /* Decrease the counter matching the flow. */
 835                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 836                                 if ((tunnels_info[j].tunnel &
 837                                      dev_handle->layers) ==
 838                                     tunnels_info[j].tunnel) {
 839                                         rxq_ctrl->flow_tunnels_n[j]--;
 840                                         break;
 841                                 }
 842                         }
 843                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 844                 }
 845         }
 846 }
 847
 848 /**
 849  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 850  * @p flow if no other flow uses it with the same kind of request.
 851  *
 852  * @param dev
 853  *   Pointer to Ethernet device.
 854  * @param[in] flow
 855  *   Pointer to the flow.
 856  */
 857 static void
 858 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 859 {
 860         struct mlx5_priv *priv = dev->data->dev_private;
 861         uint32_t handle_idx;
 862         struct mlx5_flow_handle *dev_handle;
 863
 864         SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
 865                        handle_idx, dev_handle, next)
 866                 flow_drv_rxq_flags_trim(dev, dev_handle);
 867 }
 868
 869 /**
 870  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 871  *
 872  * @param dev
 873  *   Pointer to Ethernet device.
 874  */
 875 static void
 876 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 877 {
 878         struct mlx5_priv *priv = dev->data->dev_private;
 879         unsigned int i;
 880
 881         for (i = 0; i != priv->rxqs_n; ++i) {
 882                 struct mlx5_rxq_ctrl *rxq_ctrl;
 883                 unsigned int j;
 884
 885                 if (!(*priv->rxqs)[i])
 886                         continue;
 887                 rxq_ctrl = container_of((*priv->rxqs)[i],
 888                                         struct mlx5_rxq_ctrl, rxq);
 889                 rxq_ctrl->flow_mark_n = 0;
 890                 rxq_ctrl->rxq.mark = 0;
 891                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 892                         rxq_ctrl->flow_tunnels_n[j] = 0;
 893                 rxq_ctrl->rxq.tunnel = 0;
 894         }
 895 }
 896
 897 /**
 898  * Set the Rx queue dynamic metadata (mask and offset) for a flow
 899  *
 900  * @param[in] dev
 901  *   Pointer to the Ethernet device structure.
 902  */
 903 void
 904 mlx5_flow_rxq_dynf_metadata_set(struct rte_eth_dev *dev)
 905 {
 906         struct mlx5_priv *priv = dev->data->dev_private;
 907         struct mlx5_rxq_data *data;
 908         unsigned int i;
 909
 910         for (i = 0; i != priv->rxqs_n; ++i) {
 911                 if (!(*priv->rxqs)[i])
 912                         continue;
 913                 data = (*priv->rxqs)[i];
 914                 if (!rte_flow_dynf_metadata_avail()) {
 915                         data->dynf_meta = 0;
 916                         data->flow_meta_mask = 0;
 917                         data->flow_meta_offset = -1;
 918                 } else {
 919                         data->dynf_meta = 1;
 920                         data->flow_meta_mask = rte_flow_dynf_metadata_mask;
 921                         data->flow_meta_offset = rte_flow_dynf_metadata_offs;
 922                 }
 923         }
 924 }
 925
 926 /*
 927  * return a pointer to the desired action in the list of actions.
 928  *
 929  * @param[in] actions
 930  *   The list of actions to search the action in.
 931  * @param[in] action
 932  *   The action to find.
 933  *
 934  * @return
 935  *   Pointer to the action in the list, if found. NULL otherwise.
 936  */
 937 const struct rte_flow_action *
 938 mlx5_flow_find_action(const struct rte_flow_action *actions,
 939                       enum rte_flow_action_type action)
 940 {
 941         if (actions == NULL)
 942                 return NULL;
 943         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
 944                 if (actions->type == action)
 945                         return actions;
 946         return NULL;
 947 }
 948
 949 /*
 950  * Validate the flag action.
 951  *
 952  * @param[in] action_flags
 953  *   Bit-fields that holds the actions detected until now.
 954  * @param[in] attr
 955  *   Attributes of flow that includes this action.
 956  * @param[out] error
 957  *   Pointer to error structure.
 958  *
 959  * @return
 960  *   0 on success, a negative errno value otherwise and rte_errno is set.
 961  */
 962 int
 963 mlx5_flow_validate_action_flag(uint64_t action_flags,
 964                                const struct rte_flow_attr *attr,
 965                                struct rte_flow_error *error)
 966 {
 967         if (action_flags & MLX5_FLOW_ACTION_MARK)
 968                 return rte_flow_error_set(error, EINVAL,
 969                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 970                                           "can't mark and flag in same flow");
 971         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 972                 return rte_flow_error_set(error, EINVAL,
 973                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 974                                           "can't have 2 flag"
 975                                           " actions in same flow");
 976         if (attr->egress)
 977                 return rte_flow_error_set(error, ENOTSUP,
 978                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 979                                           "flag action not supported for "
 980                                           "egress");
 981         return 0;
 982 }
 983
 984 /*
 985  * Validate the mark action.
 986  *
 987  * @param[in] action
 988  *   Pointer to the queue action.
 989  * @param[in] action_flags
 990  *   Bit-fields that holds the actions detected until now.
 991  * @param[in] attr
 992  *   Attributes of flow that includes this action.
 993  * @param[out] error
 994  *   Pointer to error structure.
 995  *
 996  * @return
 997  *   0 on success, a negative errno value otherwise and rte_errno is set.
 998  */
 999 int
1000 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
1001                                uint64_t action_flags,
1002                                const struct rte_flow_attr *attr,
1003                                struct rte_flow_error *error)
1004 {
1005         const struct rte_flow_action_mark *mark = action->conf;
1006
1007         if (!mark)
1008                 return rte_flow_error_set(error, EINVAL,
1009                                           RTE_FLOW_ERROR_TYPE_ACTION,
1010                                           action,
1011                                           "configuration cannot be null");
1012         if (mark->id >= MLX5_FLOW_MARK_MAX)
1013                 return rte_flow_error_set(error, EINVAL,
1014                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1015                                           &mark->id,
1016                                           "mark id must in 0 <= id < "
1017                                           RTE_STR(MLX5_FLOW_MARK_MAX));
1018         if (action_flags & MLX5_FLOW_ACTION_FLAG)
1019                 return rte_flow_error_set(error, EINVAL,
1020                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1021                                           "can't flag and mark in same flow");
1022         if (action_flags & MLX5_FLOW_ACTION_MARK)
1023                 return rte_flow_error_set(error, EINVAL,
1024                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1025                                           "can't have 2 mark actions in same"
1026                                           " flow");
1027         if (attr->egress)
1028                 return rte_flow_error_set(error, ENOTSUP,
1029                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1030                                           "mark action not supported for "
1031                                           "egress");
1032         return 0;
1033 }
1034
1035 /*
1036  * Validate the drop action.
1037  *
1038  * @param[in] action_flags
1039  *   Bit-fields that holds the actions detected until now.
1040  * @param[in] attr
1041  *   Attributes of flow that includes this action.
1042  * @param[out] error
1043  *   Pointer to error structure.
1044  *
1045  * @return
1046  *   0 on success, a negative errno value otherwise and rte_errno is set.
1047  */
1048 int
1049 mlx5_flow_validate_action_drop(uint64_t action_flags __rte_unused,
1050                                const struct rte_flow_attr *attr,
1051                                struct rte_flow_error *error)
1052 {
1053         if (attr->egress)
1054                 return rte_flow_error_set(error, ENOTSUP,
1055                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1056                                           "drop action not supported for "
1057                                           "egress");
1058         return 0;
1059 }
1060
1061 /*
1062  * Validate the queue action.
1063  *
1064  * @param[in] action
1065  *   Pointer to the queue action.
1066  * @param[in] action_flags
1067  *   Bit-fields that holds the actions detected until now.
1068  * @param[in] dev
1069  *   Pointer to the Ethernet device structure.
1070  * @param[in] attr
1071  *   Attributes of flow that includes this action.
1072  * @param[out] error
1073  *   Pointer to error structure.
1074  *
1075  * @return
1076  *   0 on success, a negative errno value otherwise and rte_errno is set.
1077  */
1078 int
1079 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
1080                                 uint64_t action_flags,
1081                                 struct rte_eth_dev *dev,
1082                                 const struct rte_flow_attr *attr,
1083                                 struct rte_flow_error *error)
1084 {
1085         struct mlx5_priv *priv = dev->data->dev_private;
1086         const struct rte_flow_action_queue *queue = action->conf;
1087
1088         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1089                 return rte_flow_error_set(error, EINVAL,
1090                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1091                                           "can't have 2 fate actions in"
1092                                           " same flow");
1093         if (!priv->rxqs_n)
1094                 return rte_flow_error_set(error, EINVAL,
1095                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1096                                           NULL, "No Rx queues configured");
1097         if (queue->index >= priv->rxqs_n)
1098                 return rte_flow_error_set(error, EINVAL,
1099                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1100                                           &queue->index,
1101                                           "queue index out of range");
1102         if (!(*priv->rxqs)[queue->index])
1103                 return rte_flow_error_set(error, EINVAL,
1104                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1105                                           &queue->index,
1106                                           "queue is not configured");
1107         if (attr->egress)
1108                 return rte_flow_error_set(error, ENOTSUP,
1109                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1110                                           "queue action not supported for "
1111                                           "egress");
1112         return 0;
1113 }
1114
1115 /*
1116  * Validate the rss action.
1117  *
1118  * @param[in] action
1119  *   Pointer to the queue action.
1120  * @param[in] action_flags
1121  *   Bit-fields that holds the actions detected until now.
1122  * @param[in] dev
1123  *   Pointer to the Ethernet device structure.
1124  * @param[in] attr
1125  *   Attributes of flow that includes this action.
1126  * @param[in] item_flags
1127  *   Items that were detected.
1128  * @param[out] error
1129  *   Pointer to error structure.
1130  *
1131  * @return
1132  *   0 on success, a negative errno value otherwise and rte_errno is set.
1133  */
1134 int
1135 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
1136                               uint64_t action_flags,
1137                               struct rte_eth_dev *dev,
1138                               const struct rte_flow_attr *attr,
1139                               uint64_t item_flags,
1140                               struct rte_flow_error *error)
1141 {
1142         struct mlx5_priv *priv = dev->data->dev_private;
1143         const struct rte_flow_action_rss *rss = action->conf;
1144         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1145         unsigned int i;
1146
1147         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1148                 return rte_flow_error_set(error, EINVAL,
1149                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1150                                           "can't have 2 fate actions"
1151                                           " in same flow");
1152         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
1153             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
1154                 return rte_flow_error_set(error, ENOTSUP,
1155                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1156                                           &rss->func,
1157                                           "RSS hash function not supported");
1158 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1159         if (rss->level > 2)
1160 #else
1161         if (rss->level > 1)
1162 #endif
1163                 return rte_flow_error_set(error, ENOTSUP,
1164                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1165                                           &rss->level,
1166                                           "tunnel RSS is not supported");
1167         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
1168         if (rss->key_len == 0 && rss->key != NULL)
1169                 return rte_flow_error_set(error, ENOTSUP,
1170                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1171                                           &rss->key_len,
1172                                           "RSS hash key length 0");
1173         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
1174                 return rte_flow_error_set(error, ENOTSUP,
1175                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1176                                           &rss->key_len,
1177                                           "RSS hash key too small");
1178         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
1179                 return rte_flow_error_set(error, ENOTSUP,
1180                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1181                                           &rss->key_len,
1182                                           "RSS hash key too large");
1183         if (rss->queue_num > priv->config.ind_table_max_size)
1184                 return rte_flow_error_set(error, ENOTSUP,
1185                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1186                                           &rss->queue_num,
1187                                           "number of queues too large");
1188         if (rss->types & MLX5_RSS_HF_MASK)
1189                 return rte_flow_error_set(error, ENOTSUP,
1190                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1191                                           &rss->types,
1192                                           "some RSS protocols are not"
1193                                           " supported");
1194         if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
1195             !(rss->types & ETH_RSS_IP))
1196                 return rte_flow_error_set(error, EINVAL,
1197                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1198                                           "L3 partial RSS requested but L3 RSS"
1199                                           " type not specified");
1200         if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
1201             !(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
1202                 return rte_flow_error_set(error, EINVAL,
1203                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1204                                           "L4 partial RSS requested but L4 RSS"
1205                                           " type not specified");
1206         if (!priv->rxqs_n)
1207                 return rte_flow_error_set(error, EINVAL,
1208                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1209                                           NULL, "No Rx queues configured");
1210         if (!rss->queue_num)
1211                 return rte_flow_error_set(error, EINVAL,
1212                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1213                                           NULL, "No queues configured");
1214         for (i = 0; i != rss->queue_num; ++i) {
1215                 if (rss->queue[i] >= priv->rxqs_n)
1216                         return rte_flow_error_set
1217                                 (error, EINVAL,
1218                                  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1219                                  &rss->queue[i], "queue index out of range");
1220                 if (!(*priv->rxqs)[rss->queue[i]])
1221                         return rte_flow_error_set
1222                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1223                                  &rss->queue[i], "queue is not configured");
1224         }
1225         if (attr->egress)
1226                 return rte_flow_error_set(error, ENOTSUP,
1227                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1228                                           "rss action not supported for "
1229                                           "egress");
1230         if (rss->level > 1 &&  !tunnel)
1231                 return rte_flow_error_set(error, EINVAL,
1232                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1233                                           "inner RSS is not supported for "
1234                                           "non-tunnel flows");
1235         return 0;
1236 }
1237
1238 /*
1239  * Validate the count action.
1240  *
1241  * @param[in] dev
1242  *   Pointer to the Ethernet device structure.
1243  * @param[in] attr
1244  *   Attributes of flow that includes this action.
1245  * @param[out] error
1246  *   Pointer to error structure.
1247  *
1248  * @return
1249  *   0 on success, a negative errno value otherwise and rte_errno is set.
1250  */
1251 int
1252 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
1253                                 const struct rte_flow_attr *attr,
1254                                 struct rte_flow_error *error)
1255 {
1256         if (attr->egress)
1257                 return rte_flow_error_set(error, ENOTSUP,
1258                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1259                                           "count action not supported for "
1260                                           "egress");
1261         return 0;
1262 }
1263
1264 /**
1265  * Verify the @p attributes will be correctly understood by the NIC and store
1266  * them in the @p flow if everything is correct.
1267  *
1268  * @param[in] dev
1269  *   Pointer to the Ethernet device structure.
1270  * @param[in] attributes
1271  *   Pointer to flow attributes
1272  * @param[out] error
1273  *   Pointer to error structure.
1274  *
1275  * @return
1276  *   0 on success, a negative errno value otherwise and rte_errno is set.
1277  */
1278 int
1279 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1280                               const struct rte_flow_attr *attributes,
1281                               struct rte_flow_error *error)
1282 {
1283         struct mlx5_priv *priv = dev->data->dev_private;
1284         uint32_t priority_max = priv->config.flow_prio - 1;
1285
1286         if (attributes->group)
1287                 return rte_flow_error_set(error, ENOTSUP,
1288                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1289                                           NULL, "groups is not supported");
1290         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1291             attributes->priority >= priority_max)
1292                 return rte_flow_error_set(error, ENOTSUP,
1293                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1294                                           NULL, "priority out of range");
1295         if (attributes->egress)
1296                 return rte_flow_error_set(error, ENOTSUP,
1297                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1298                                           "egress is not supported");
1299         if (attributes->transfer && !priv->config.dv_esw_en)
1300                 return rte_flow_error_set(error, ENOTSUP,
1301                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1302                                           NULL, "transfer is not supported");
1303         if (!attributes->ingress)
1304                 return rte_flow_error_set(error, EINVAL,
1305                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1306                                           NULL,
1307                                           "ingress attribute is mandatory");
1308         return 0;
1309 }
1310
1311 /**
1312  * Validate ICMP6 item.
1313  *
1314  * @param[in] item
1315  *   Item specification.
1316  * @param[in] item_flags
1317  *   Bit-fields that holds the items detected until now.
1318  * @param[out] error
1319  *   Pointer to error structure.
1320  *
1321  * @return
1322  *   0 on success, a negative errno value otherwise and rte_errno is set.
1323  */
1324 int
1325 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1326                                uint64_t item_flags,
1327                                uint8_t target_protocol,
1328                                struct rte_flow_error *error)
1329 {
1330         const struct rte_flow_item_icmp6 *mask = item->mask;
1331         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1332         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1333                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1334         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1335                                       MLX5_FLOW_LAYER_OUTER_L4;
1336         int ret;
1337
1338         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1339                 return rte_flow_error_set(error, EINVAL,
1340                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1341                                           "protocol filtering not compatible"
1342                                           " with ICMP6 layer");
1343         if (!(item_flags & l3m))
1344                 return rte_flow_error_set(error, EINVAL,
1345                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1346                                           "IPv6 is mandatory to filter on"
1347                                           " ICMP6");
1348         if (item_flags & l4m)
1349                 return rte_flow_error_set(error, EINVAL,
1350                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1351                                           "multiple L4 layers not supported");
1352         if (!mask)
1353                 mask = &rte_flow_item_icmp6_mask;
1354         ret = mlx5_flow_item_acceptable
1355                 (item, (const uint8_t *)mask,
1356                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1357                  sizeof(struct rte_flow_item_icmp6), error);
1358         if (ret < 0)
1359                 return ret;
1360         return 0;
1361 }
1362
1363 /**
1364  * Validate ICMP item.
1365  *
1366  * @param[in] item
1367  *   Item specification.
1368  * @param[in] item_flags
1369  *   Bit-fields that holds the items detected until now.
1370  * @param[out] error
1371  *   Pointer to error structure.
1372  *
1373  * @return
1374  *   0 on success, a negative errno value otherwise and rte_errno is set.
1375  */
1376 int
1377 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1378                              uint64_t item_flags,
1379                              uint8_t target_protocol,
1380                              struct rte_flow_error *error)
1381 {
1382         const struct rte_flow_item_icmp *mask = item->mask;
1383         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1384         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1385                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1386         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1387                                       MLX5_FLOW_LAYER_OUTER_L4;
1388         int ret;
1389
1390         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1391                 return rte_flow_error_set(error, EINVAL,
1392                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1393                                           "protocol filtering not compatible"
1394                                           " with ICMP layer");
1395         if (!(item_flags & l3m))
1396                 return rte_flow_error_set(error, EINVAL,
1397                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1398                                           "IPv4 is mandatory to filter"
1399                                           " on ICMP");
1400         if (item_flags & l4m)
1401                 return rte_flow_error_set(error, EINVAL,
1402                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1403                                           "multiple L4 layers not supported");
1404         if (!mask)
1405                 mask = &rte_flow_item_icmp_mask;
1406         ret = mlx5_flow_item_acceptable
1407                 (item, (const uint8_t *)mask,
1408                  (const uint8_t *)&rte_flow_item_icmp_mask,
1409                  sizeof(struct rte_flow_item_icmp), error);
1410         if (ret < 0)
1411                 return ret;
1412         return 0;
1413 }
1414
1415 /**
1416  * Validate Ethernet item.
1417  *
1418  * @param[in] item
1419  *   Item specification.
1420  * @param[in] item_flags
1421  *   Bit-fields that holds the items detected until now.
1422  * @param[out] error
1423  *   Pointer to error structure.
1424  *
1425  * @return
1426  *   0 on success, a negative errno value otherwise and rte_errno is set.
1427  */
1428 int
1429 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1430                             uint64_t item_flags,
1431                             struct rte_flow_error *error)
1432 {
1433         const struct rte_flow_item_eth *mask = item->mask;
1434         const struct rte_flow_item_eth nic_mask = {
1435                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1436                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1437                 .type = RTE_BE16(0xffff),
1438         };
1439         int ret;
1440         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1441         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1442                                        MLX5_FLOW_LAYER_OUTER_L2;
1443
1444         if (item_flags & ethm)
1445                 return rte_flow_error_set(error, ENOTSUP,
1446                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1447                                           "multiple L2 layers not supported");
1448         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
1449             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
1450                 return rte_flow_error_set(error, EINVAL,
1451                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1452                                           "L2 layer should not follow "
1453                                           "L3 layers");
1454         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
1455             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
1456                 return rte_flow_error_set(error, EINVAL,
1457                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1458                                           "L2 layer should not follow VLAN");
1459         if (!mask)
1460                 mask = &rte_flow_item_eth_mask;
1461         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1462                                         (const uint8_t *)&nic_mask,
1463                                         sizeof(struct rte_flow_item_eth),
1464                                         error);
1465         return ret;
1466 }
1467
1468 /**
1469  * Validate VLAN item.
1470  *
1471  * @param[in] item
1472  *   Item specification.
1473  * @param[in] item_flags
1474  *   Bit-fields that holds the items detected until now.
1475  * @param[in] dev
1476  *   Ethernet device flow is being created on.
1477  * @param[out] error
1478  *   Pointer to error structure.
1479  *
1480  * @return
1481  *   0 on success, a negative errno value otherwise and rte_errno is set.
1482  */
1483 int
1484 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1485                              uint64_t item_flags,
1486                              struct rte_eth_dev *dev,
1487                              struct rte_flow_error *error)
1488 {
1489         const struct rte_flow_item_vlan *spec = item->spec;
1490         const struct rte_flow_item_vlan *mask = item->mask;
1491         const struct rte_flow_item_vlan nic_mask = {
1492                 .tci = RTE_BE16(UINT16_MAX),
1493                 .inner_type = RTE_BE16(UINT16_MAX),
1494         };
1495         uint16_t vlan_tag = 0;
1496         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1497         int ret;
1498         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1499                                         MLX5_FLOW_LAYER_INNER_L4) :
1500                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1501                                         MLX5_FLOW_LAYER_OUTER_L4);
1502         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1503                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1504
1505         if (item_flags & vlanm)
1506                 return rte_flow_error_set(error, EINVAL,
1507                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1508                                           "multiple VLAN layers not supported");
1509         else if ((item_flags & l34m) != 0)
1510                 return rte_flow_error_set(error, EINVAL,
1511                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1512                                           "VLAN cannot follow L3/L4 layer");
1513         if (!mask)
1514                 mask = &rte_flow_item_vlan_mask;
1515         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1516                                         (const uint8_t *)&nic_mask,
1517                                         sizeof(struct rte_flow_item_vlan),
1518                                         error);
1519         if (ret)
1520                 return ret;
1521         if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
1522                 struct mlx5_priv *priv = dev->data->dev_private;
1523
1524                 if (priv->vmwa_context) {
1525                         /*
1526                          * Non-NULL context means we have a virtual machine
1527                          * and SR-IOV enabled, we have to create VLAN interface
1528                          * to make hypervisor to setup E-Switch vport
1529                          * context correctly. We avoid creating the multiple
1530                          * VLAN interfaces, so we cannot support VLAN tag mask.
1531                          */
1532                         return rte_flow_error_set(error, EINVAL,
1533                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1534                                                   item,
1535                                                   "VLAN tag mask is not"
1536                                                   " supported in virtual"
1537                                                   " environment");
1538                 }
1539         }
1540         if (spec) {
1541                 vlan_tag = spec->tci;
1542                 vlan_tag &= mask->tci;
1543         }
1544         /*
1545          * From verbs perspective an empty VLAN is equivalent
1546          * to a packet without VLAN layer.
1547          */
1548         if (!vlan_tag)
1549                 return rte_flow_error_set(error, EINVAL,
1550                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1551                                           item->spec,
1552                                           "VLAN cannot be empty");
1553         return 0;
1554 }
1555
1556 /**
1557  * Validate IPV4 item.
1558  *
1559  * @param[in] item
1560  *   Item specification.
1561  * @param[in] item_flags
1562  *   Bit-fields that holds the items detected until now.
1563  * @param[in] acc_mask
1564  *   Acceptable mask, if NULL default internal default mask
1565  *   will be used to check whether item fields are supported.
1566  * @param[out] error
1567  *   Pointer to error structure.
1568  *
1569  * @return
1570  *   0 on success, a negative errno value otherwise and rte_errno is set.
1571  */
1572 int
1573 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1574                              uint64_t item_flags,
1575                              uint64_t last_item,
1576                              uint16_t ether_type,
1577                              const struct rte_flow_item_ipv4 *acc_mask,
1578                              struct rte_flow_error *error)
1579 {
1580         const struct rte_flow_item_ipv4 *mask = item->mask;
1581         const struct rte_flow_item_ipv4 *spec = item->spec;
1582         const struct rte_flow_item_ipv4 nic_mask = {
1583                 .hdr = {
1584                         .src_addr = RTE_BE32(0xffffffff),
1585                         .dst_addr = RTE_BE32(0xffffffff),
1586                         .type_of_service = 0xff,
1587                         .next_proto_id = 0xff,
1588                 },
1589         };
1590         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1591         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1592                                       MLX5_FLOW_LAYER_OUTER_L3;
1593         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1594                                       MLX5_FLOW_LAYER_OUTER_L4;
1595         int ret;
1596         uint8_t next_proto = 0xFF;
1597         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1598                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1599                                   MLX5_FLOW_LAYER_INNER_VLAN);
1600
1601         if ((last_item & l2_vlan) && ether_type &&
1602             ether_type != RTE_ETHER_TYPE_IPV4)
1603                 return rte_flow_error_set(error, EINVAL,
1604                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1605                                           "IPv4 cannot follow L2/VLAN layer "
1606                                           "which ether type is not IPv4");
1607         if (item_flags & MLX5_FLOW_LAYER_IPIP) {
1608                 if (mask && spec)
1609                         next_proto = mask->hdr.next_proto_id &
1610                                      spec->hdr.next_proto_id;
1611                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1612                         return rte_flow_error_set(error, EINVAL,
1613                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1614                                                   item,
1615                                                   "multiple tunnel "
1616                                                   "not supported");
1617         }
1618         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
1619                 return rte_flow_error_set(error, EINVAL,
1620                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1621                                           "wrong tunnel type - IPv6 specified "
1622                                           "but IPv4 item provided");
1623         if (item_flags & l3m)
1624                 return rte_flow_error_set(error, ENOTSUP,
1625                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1626                                           "multiple L3 layers not supported");
1627         else if (item_flags & l4m)
1628                 return rte_flow_error_set(error, EINVAL,
1629                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1630                                           "L3 cannot follow an L4 layer.");
1631         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1632                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1633                 return rte_flow_error_set(error, EINVAL,
1634                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1635                                           "L3 cannot follow an NVGRE layer.");
1636         if (!mask)
1637                 mask = &rte_flow_item_ipv4_mask;
1638         else if (mask->hdr.next_proto_id != 0 &&
1639                  mask->hdr.next_proto_id != 0xff)
1640                 return rte_flow_error_set(error, EINVAL,
1641                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1642                                           "partial mask is not supported"
1643                                           " for protocol");
1644         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1645                                         acc_mask ? (const uint8_t *)acc_mask
1646                                                  : (const uint8_t *)&nic_mask,
1647                                         sizeof(struct rte_flow_item_ipv4),
1648                                         error);
1649         if (ret < 0)
1650                 return ret;
1651         return 0;
1652 }
1653
1654 /**
1655  * Validate IPV6 item.
1656  *
1657  * @param[in] item
1658  *   Item specification.
1659  * @param[in] item_flags
1660  *   Bit-fields that holds the items detected until now.
1661  * @param[in] acc_mask
1662  *   Acceptable mask, if NULL default internal default mask
1663  *   will be used to check whether item fields are supported.
1664  * @param[out] error
1665  *   Pointer to error structure.
1666  *
1667  * @return
1668  *   0 on success, a negative errno value otherwise and rte_errno is set.
1669  */
1670 int
1671 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1672                              uint64_t item_flags,
1673                              uint64_t last_item,
1674                              uint16_t ether_type,
1675                              const struct rte_flow_item_ipv6 *acc_mask,
1676                              struct rte_flow_error *error)
1677 {
1678         const struct rte_flow_item_ipv6 *mask = item->mask;
1679         const struct rte_flow_item_ipv6 *spec = item->spec;
1680         const struct rte_flow_item_ipv6 nic_mask = {
1681                 .hdr = {
1682                         .src_addr =
1683                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1684                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1685                         .dst_addr =
1686                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1687                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1688                         .vtc_flow = RTE_BE32(0xffffffff),
1689                         .proto = 0xff,
1690                 },
1691         };
1692         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1693         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1694                                       MLX5_FLOW_LAYER_OUTER_L3;
1695         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1696                                       MLX5_FLOW_LAYER_OUTER_L4;
1697         int ret;
1698         uint8_t next_proto = 0xFF;
1699         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1700                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1701                                   MLX5_FLOW_LAYER_INNER_VLAN);
1702
1703         if ((last_item & l2_vlan) && ether_type &&
1704             ether_type != RTE_ETHER_TYPE_IPV6)
1705                 return rte_flow_error_set(error, EINVAL,
1706                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1707                                           "IPv6 cannot follow L2/VLAN layer "
1708                                           "which ether type is not IPv6");
1709         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
1710                 if (mask && spec)
1711                         next_proto = mask->hdr.proto & spec->hdr.proto;
1712                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1713                         return rte_flow_error_set(error, EINVAL,
1714                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1715                                                   item,
1716                                                   "multiple tunnel "
1717                                                   "not supported");
1718         }
1719         if (item_flags & MLX5_FLOW_LAYER_IPIP)
1720                 return rte_flow_error_set(error, EINVAL,
1721                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1722                                           "wrong tunnel type - IPv4 specified "
1723                                           "but IPv6 item provided");
1724         if (item_flags & l3m)
1725                 return rte_flow_error_set(error, ENOTSUP,
1726                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1727                                           "multiple L3 layers not supported");
1728         else if (item_flags & l4m)
1729                 return rte_flow_error_set(error, EINVAL,
1730                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1731                                           "L3 cannot follow an L4 layer.");
1732         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1733                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1734                 return rte_flow_error_set(error, EINVAL,
1735                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1736                                           "L3 cannot follow an NVGRE layer.");
1737         if (!mask)
1738                 mask = &rte_flow_item_ipv6_mask;
1739         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1740                                         acc_mask ? (const uint8_t *)acc_mask
1741                                                  : (const uint8_t *)&nic_mask,
1742                                         sizeof(struct rte_flow_item_ipv6),
1743                                         error);
1744         if (ret < 0)
1745                 return ret;
1746         return 0;
1747 }
1748
1749 /**
1750  * Validate UDP item.
1751  *
1752  * @param[in] item
1753  *   Item specification.
1754  * @param[in] item_flags
1755  *   Bit-fields that holds the items detected until now.
1756  * @param[in] target_protocol
1757  *   The next protocol in the previous item.
1758  * @param[in] flow_mask
1759  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1760  * @param[out] error
1761  *   Pointer to error structure.
1762  *
1763  * @return
1764  *   0 on success, a negative errno value otherwise and rte_errno is set.
1765  */
1766 int
1767 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1768                             uint64_t item_flags,
1769                             uint8_t target_protocol,
1770                             struct rte_flow_error *error)
1771 {
1772         const struct rte_flow_item_udp *mask = item->mask;
1773         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1774         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1775                                       MLX5_FLOW_LAYER_OUTER_L3;
1776         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1777                                       MLX5_FLOW_LAYER_OUTER_L4;
1778         int ret;
1779
1780         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1781                 return rte_flow_error_set(error, EINVAL,
1782                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1783                                           "protocol filtering not compatible"
1784                                           " with UDP layer");
1785         if (!(item_flags & l3m))
1786                 return rte_flow_error_set(error, EINVAL,
1787                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1788                                           "L3 is mandatory to filter on L4");
1789         if (item_flags & l4m)
1790                 return rte_flow_error_set(error, EINVAL,
1791                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1792                                           "multiple L4 layers not supported");
1793         if (!mask)
1794                 mask = &rte_flow_item_udp_mask;
1795         ret = mlx5_flow_item_acceptable
1796                 (item, (const uint8_t *)mask,
1797                  (const uint8_t *)&rte_flow_item_udp_mask,
1798                  sizeof(struct rte_flow_item_udp), error);
1799         if (ret < 0)
1800                 return ret;
1801         return 0;
1802 }
1803
1804 /**
1805  * Validate TCP item.
1806  *
1807  * @param[in] item
1808  *   Item specification.
1809  * @param[in] item_flags
1810  *   Bit-fields that holds the items detected until now.
1811  * @param[in] target_protocol
1812  *   The next protocol in the previous item.
1813  * @param[out] error
1814  *   Pointer to error structure.
1815  *
1816  * @return
1817  *   0 on success, a negative errno value otherwise and rte_errno is set.
1818  */
1819 int
1820 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1821                             uint64_t item_flags,
1822                             uint8_t target_protocol,
1823                             const struct rte_flow_item_tcp *flow_mask,
1824                             struct rte_flow_error *error)
1825 {
1826         const struct rte_flow_item_tcp *mask = item->mask;
1827         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1828         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1829                                       MLX5_FLOW_LAYER_OUTER_L3;
1830         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1831                                       MLX5_FLOW_LAYER_OUTER_L4;
1832         int ret;
1833
1834         MLX5_ASSERT(flow_mask);
1835         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1836                 return rte_flow_error_set(error, EINVAL,
1837                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1838                                           "protocol filtering not compatible"
1839                                           " with TCP layer");
1840         if (!(item_flags & l3m))
1841                 return rte_flow_error_set(error, EINVAL,
1842                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1843                                           "L3 is mandatory to filter on L4");
1844         if (item_flags & l4m)
1845                 return rte_flow_error_set(error, EINVAL,
1846                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1847                                           "multiple L4 layers not supported");
1848         if (!mask)
1849                 mask = &rte_flow_item_tcp_mask;
1850         ret = mlx5_flow_item_acceptable
1851                 (item, (const uint8_t *)mask,
1852                  (const uint8_t *)flow_mask,
1853                  sizeof(struct rte_flow_item_tcp), error);
1854         if (ret < 0)
1855                 return ret;
1856         return 0;
1857 }
1858
1859 /**
1860  * Validate VXLAN item.
1861  *
1862  * @param[in] item
1863  *   Item specification.
1864  * @param[in] item_flags
1865  *   Bit-fields that holds the items detected until now.
1866  * @param[in] target_protocol
1867  *   The next protocol in the previous item.
1868  * @param[out] error
1869  *   Pointer to error structure.
1870  *
1871  * @return
1872  *   0 on success, a negative errno value otherwise and rte_errno is set.
1873  */
1874 int
1875 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1876                               uint64_t item_flags,
1877                               struct rte_flow_error *error)
1878 {
1879         const struct rte_flow_item_vxlan *spec = item->spec;
1880         const struct rte_flow_item_vxlan *mask = item->mask;
1881         int ret;
1882         union vni {
1883                 uint32_t vlan_id;
1884                 uint8_t vni[4];
1885         } id = { .vlan_id = 0, };
1886
1887
1888         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1889                 return rte_flow_error_set(error, ENOTSUP,
1890                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1891                                           "multiple tunnel layers not"
1892                                           " supported");
1893         /*
1894          * Verify only UDPv4 is present as defined in
1895          * https://tools.ietf.org/html/rfc7348
1896          */
1897         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1898                 return rte_flow_error_set(error, EINVAL,
1899                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1900                                           "no outer UDP layer found");
1901         if (!mask)
1902                 mask = &rte_flow_item_vxlan_mask;
1903         ret = mlx5_flow_item_acceptable
1904                 (item, (const uint8_t *)mask,
1905                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1906                  sizeof(struct rte_flow_item_vxlan),
1907                  error);
1908         if (ret < 0)
1909                 return ret;
1910         if (spec) {
1911                 memcpy(&id.vni[1], spec->vni, 3);
1912                 memcpy(&id.vni[1], mask->vni, 3);
1913         }
1914         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1915                 return rte_flow_error_set(error, ENOTSUP,
1916                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1917                                           "VXLAN tunnel must be fully defined");
1918         return 0;
1919 }
1920
1921 /**
1922  * Validate VXLAN_GPE item.
1923  *
1924  * @param[in] item
1925  *   Item specification.
1926  * @param[in] item_flags
1927  *   Bit-fields that holds the items detected until now.
1928  * @param[in] priv
1929  *   Pointer to the private data structure.
1930  * @param[in] target_protocol
1931  *   The next protocol in the previous item.
1932  * @param[out] error
1933  *   Pointer to error structure.
1934  *
1935  * @return
1936  *   0 on success, a negative errno value otherwise and rte_errno is set.
1937  */
1938 int
1939 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1940                                   uint64_t item_flags,
1941                                   struct rte_eth_dev *dev,
1942                                   struct rte_flow_error *error)
1943 {
1944         struct mlx5_priv *priv = dev->data->dev_private;
1945         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1946         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1947         int ret;
1948         union vni {
1949                 uint32_t vlan_id;
1950                 uint8_t vni[4];
1951         } id = { .vlan_id = 0, };
1952
1953         if (!priv->config.l3_vxlan_en)
1954                 return rte_flow_error_set(error, ENOTSUP,
1955                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1956                                           "L3 VXLAN is not enabled by device"
1957                                           " parameter and/or not configured in"
1958                                           " firmware");
1959         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1960                 return rte_flow_error_set(error, ENOTSUP,
1961                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1962                                           "multiple tunnel layers not"
1963                                           " supported");
1964         /*
1965          * Verify only UDPv4 is present as defined in
1966          * https://tools.ietf.org/html/rfc7348
1967          */
1968         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1969                 return rte_flow_error_set(error, EINVAL,
1970                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1971                                           "no outer UDP layer found");
1972         if (!mask)
1973                 mask = &rte_flow_item_vxlan_gpe_mask;
1974         ret = mlx5_flow_item_acceptable
1975                 (item, (const uint8_t *)mask,
1976                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1977                  sizeof(struct rte_flow_item_vxlan_gpe),
1978                  error);
1979         if (ret < 0)
1980                 return ret;
1981         if (spec) {
1982                 if (spec->protocol)
1983                         return rte_flow_error_set(error, ENOTSUP,
1984                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1985                                                   item,
1986                                                   "VxLAN-GPE protocol"
1987                                                   " not supported");
1988                 memcpy(&id.vni[1], spec->vni, 3);
1989                 memcpy(&id.vni[1], mask->vni, 3);
1990         }
1991         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1992                 return rte_flow_error_set(error, ENOTSUP,
1993                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1994                                           "VXLAN-GPE tunnel must be fully"
1995                                           " defined");
1996         return 0;
1997 }
1998 /**
1999  * Validate GRE Key item.
2000  *
2001  * @param[in] item
2002  *   Item specification.
2003  * @param[in] item_flags
2004  *   Bit flags to mark detected items.
2005  * @param[in] gre_item
2006  *   Pointer to gre_item
2007  * @param[out] error
2008  *   Pointer to error structure.
2009  *
2010  * @return
2011  *   0 on success, a negative errno value otherwise and rte_errno is set.
2012  */
2013 int
2014 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
2015                                 uint64_t item_flags,
2016                                 const struct rte_flow_item *gre_item,
2017                                 struct rte_flow_error *error)
2018 {
2019         const rte_be32_t *mask = item->mask;
2020         int ret = 0;
2021         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2022         const struct rte_flow_item_gre *gre_spec;
2023         const struct rte_flow_item_gre *gre_mask;
2024
2025         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2026                 return rte_flow_error_set(error, ENOTSUP,
2027                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2028                                           "Multiple GRE key not support");
2029         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2030                 return rte_flow_error_set(error, ENOTSUP,
2031                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2032                                           "No preceding GRE header");
2033         if (item_flags & MLX5_FLOW_LAYER_INNER)
2034                 return rte_flow_error_set(error, ENOTSUP,
2035                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2036                                           "GRE key following a wrong item");
2037         gre_mask = gre_item->mask;
2038         if (!gre_mask)
2039                 gre_mask = &rte_flow_item_gre_mask;
2040         gre_spec = gre_item->spec;
2041         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2042                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2043                 return rte_flow_error_set(error, EINVAL,
2044                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2045                                           "Key bit must be on");
2046
2047         if (!mask)
2048                 mask = &gre_key_default_mask;
2049         ret = mlx5_flow_item_acceptable
2050                 (item, (const uint8_t *)mask,
2051                  (const uint8_t *)&gre_key_default_mask,
2052                  sizeof(rte_be32_t), error);
2053         return ret;
2054 }
2055
2056 /**
2057  * Validate GRE item.
2058  *
2059  * @param[in] item
2060  *   Item specification.
2061  * @param[in] item_flags
2062  *   Bit flags to mark detected items.
2063  * @param[in] target_protocol
2064  *   The next protocol in the previous item.
2065  * @param[out] error
2066  *   Pointer to error structure.
2067  *
2068  * @return
2069  *   0 on success, a negative errno value otherwise and rte_errno is set.
2070  */
2071 int
2072 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2073                             uint64_t item_flags,
2074                             uint8_t target_protocol,
2075                             struct rte_flow_error *error)
2076 {
2077         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2078         const struct rte_flow_item_gre *mask = item->mask;
2079         int ret;
2080         const struct rte_flow_item_gre nic_mask = {
2081                 .c_rsvd0_ver = RTE_BE16(0xB000),
2082                 .protocol = RTE_BE16(UINT16_MAX),
2083         };
2084
2085         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2086                 return rte_flow_error_set(error, EINVAL,
2087                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2088                                           "protocol filtering not compatible"
2089                                           " with this GRE layer");
2090         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2091                 return rte_flow_error_set(error, ENOTSUP,
2092                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2093                                           "multiple tunnel layers not"
2094                                           " supported");
2095         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2096                 return rte_flow_error_set(error, ENOTSUP,
2097                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2098                                           "L3 Layer is missing");
2099         if (!mask)
2100                 mask = &rte_flow_item_gre_mask;
2101         ret = mlx5_flow_item_acceptable
2102                 (item, (const uint8_t *)mask,
2103                  (const uint8_t *)&nic_mask,
2104                  sizeof(struct rte_flow_item_gre), error);
2105         if (ret < 0)
2106                 return ret;
2107 #ifndef HAVE_MLX5DV_DR
2108 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2109         if (spec && (spec->protocol & mask->protocol))
2110                 return rte_flow_error_set(error, ENOTSUP,
2111                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2112                                           "without MPLS support the"
2113                                           " specification cannot be used for"
2114                                           " filtering");
2115 #endif
2116 #endif
2117         return 0;
2118 }
2119
2120 /**
2121  * Validate Geneve item.
2122  *
2123  * @param[in] item
2124  *   Item specification.
2125  * @param[in] itemFlags
2126  *   Bit-fields that holds the items detected until now.
2127  * @param[in] enPriv
2128  *   Pointer to the private data structure.
2129  * @param[out] error
2130  *   Pointer to error structure.
2131  *
2132  * @return
2133  *   0 on success, a negative errno value otherwise and rte_errno is set.
2134  */
2135
2136 int
2137 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2138                                uint64_t item_flags,
2139                                struct rte_eth_dev *dev,
2140                                struct rte_flow_error *error)
2141 {
2142         struct mlx5_priv *priv = dev->data->dev_private;
2143         const struct rte_flow_item_geneve *spec = item->spec;
2144         const struct rte_flow_item_geneve *mask = item->mask;
2145         int ret;
2146         uint16_t gbhdr;
2147         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2148                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2149         const struct rte_flow_item_geneve nic_mask = {
2150                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2151                 .vni = "\xff\xff\xff",
2152                 .protocol = RTE_BE16(UINT16_MAX),
2153         };
2154
2155         if (!priv->config.hca_attr.tunnel_stateless_geneve_rx)
2156                 return rte_flow_error_set(error, ENOTSUP,
2157                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2158                                           "L3 Geneve is not enabled by device"
2159                                           " parameter and/or not configured in"
2160                                           " firmware");
2161         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2162                 return rte_flow_error_set(error, ENOTSUP,
2163                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2164                                           "multiple tunnel layers not"
2165                                           " supported");
2166         /*
2167          * Verify only UDPv4 is present as defined in
2168          * https://tools.ietf.org/html/rfc7348
2169          */
2170         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2171                 return rte_flow_error_set(error, EINVAL,
2172                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2173                                           "no outer UDP layer found");
2174         if (!mask)
2175                 mask = &rte_flow_item_geneve_mask;
2176         ret = mlx5_flow_item_acceptable
2177                                   (item, (const uint8_t *)mask,
2178                                    (const uint8_t *)&nic_mask,
2179                                    sizeof(struct rte_flow_item_geneve), error);
2180         if (ret)
2181                 return ret;
2182         if (spec) {
2183                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2184                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2185                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2186                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2187                         return rte_flow_error_set(error, ENOTSUP,
2188                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2189                                                   item,
2190                                                   "Geneve protocol unsupported"
2191                                                   " fields are being used");
2192                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2193                         return rte_flow_error_set
2194                                         (error, ENOTSUP,
2195                                          RTE_FLOW_ERROR_TYPE_ITEM,
2196                                          item,
2197                                          "Unsupported Geneve options length");
2198         }
2199         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2200                 return rte_flow_error_set
2201                                     (error, ENOTSUP,
2202                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2203                                      "Geneve tunnel must be fully defined");
2204         return 0;
2205 }
2206
2207 /**
2208  * Validate MPLS item.
2209  *
2210  * @param[in] dev
2211  *   Pointer to the rte_eth_dev structure.
2212  * @param[in] item
2213  *   Item specification.
2214  * @param[in] item_flags
2215  *   Bit-fields that holds the items detected until now.
2216  * @param[in] prev_layer
2217  *   The protocol layer indicated in previous item.
2218  * @param[out] error
2219  *   Pointer to error structure.
2220  *
2221  * @return
2222  *   0 on success, a negative errno value otherwise and rte_errno is set.
2223  */
2224 int
2225 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2226                              const struct rte_flow_item *item __rte_unused,
2227                              uint64_t item_flags __rte_unused,
2228                              uint64_t prev_layer __rte_unused,
2229                              struct rte_flow_error *error)
2230 {
2231 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2232         const struct rte_flow_item_mpls *mask = item->mask;
2233         struct mlx5_priv *priv = dev->data->dev_private;
2234         int ret;
2235
2236         if (!priv->config.mpls_en)
2237                 return rte_flow_error_set(error, ENOTSUP,
2238                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2239                                           "MPLS not supported or"
2240                                           " disabled in firmware"
2241                                           " configuration.");
2242         /* MPLS over IP, UDP, GRE is allowed */
2243         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2244                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2245                             MLX5_FLOW_LAYER_GRE)))
2246                 return rte_flow_error_set(error, EINVAL,
2247                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2248                                           "protocol filtering not compatible"
2249                                           " with MPLS layer");
2250         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2251         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2252             !(item_flags & MLX5_FLOW_LAYER_GRE))
2253                 return rte_flow_error_set(error, ENOTSUP,
2254                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2255                                           "multiple tunnel layers not"
2256                                           " supported");
2257         if (!mask)
2258                 mask = &rte_flow_item_mpls_mask;
2259         ret = mlx5_flow_item_acceptable
2260                 (item, (const uint8_t *)mask,
2261                  (const uint8_t *)&rte_flow_item_mpls_mask,
2262                  sizeof(struct rte_flow_item_mpls), error);
2263         if (ret < 0)
2264                 return ret;
2265         return 0;
2266 #endif
2267         return rte_flow_error_set(error, ENOTSUP,
2268                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2269                                   "MPLS is not supported by Verbs, please"
2270                                   " update.");
2271 }
2272
2273 /**
2274  * Validate NVGRE item.
2275  *
2276  * @param[in] item
2277  *   Item specification.
2278  * @param[in] item_flags
2279  *   Bit flags to mark detected items.
2280  * @param[in] target_protocol
2281  *   The next protocol in the previous item.
2282  * @param[out] error
2283  *   Pointer to error structure.
2284  *
2285  * @return
2286  *   0 on success, a negative errno value otherwise and rte_errno is set.
2287  */
2288 int
2289 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2290                               uint64_t item_flags,
2291                               uint8_t target_protocol,
2292                               struct rte_flow_error *error)
2293 {
2294         const struct rte_flow_item_nvgre *mask = item->mask;
2295         int ret;
2296
2297         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2298                 return rte_flow_error_set(error, EINVAL,
2299                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2300                                           "protocol filtering not compatible"
2301                                           " with this GRE layer");
2302         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2303                 return rte_flow_error_set(error, ENOTSUP,
2304                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2305                                           "multiple tunnel layers not"
2306                                           " supported");
2307         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2308                 return rte_flow_error_set(error, ENOTSUP,
2309                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2310                                           "L3 Layer is missing");
2311         if (!mask)
2312                 mask = &rte_flow_item_nvgre_mask;
2313         ret = mlx5_flow_item_acceptable
2314                 (item, (const uint8_t *)mask,
2315                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2316                  sizeof(struct rte_flow_item_nvgre), error);
2317         if (ret < 0)
2318                 return ret;
2319         return 0;
2320 }
2321
2322 /* Allocate unique ID for the split Q/RSS subflows. */
2323 static uint32_t
2324 flow_qrss_get_id(struct rte_eth_dev *dev)
2325 {
2326         struct mlx5_priv *priv = dev->data->dev_private;
2327         uint32_t qrss_id, ret;
2328
2329         ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
2330         if (ret)
2331                 return 0;
2332         MLX5_ASSERT(qrss_id);
2333         return qrss_id;
2334 }
2335
2336 /* Free unique ID for the split Q/RSS subflows. */
2337 static void
2338 flow_qrss_free_id(struct rte_eth_dev *dev,  uint32_t qrss_id)
2339 {
2340         struct mlx5_priv *priv = dev->data->dev_private;
2341
2342         if (qrss_id)
2343                 mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
2344 }
2345
2346 /**
2347  * Release resource related QUEUE/RSS action split.
2348  *
2349  * @param dev
2350  *   Pointer to Ethernet device.
2351  * @param flow
2352  *   Flow to release id's from.
2353  */
2354 static void
2355 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
2356                              struct rte_flow *flow)
2357 {
2358         struct mlx5_priv *priv = dev->data->dev_private;
2359         uint32_t handle_idx;
2360         struct mlx5_flow_handle *dev_handle;
2361
2362         SILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_MLX5_FLOW], flow->dev_handles,
2363                        handle_idx, dev_handle, next)
2364                 if (dev_handle->split_flow_id)
2365                         flow_qrss_free_id(dev, dev_handle->split_flow_id);
2366 }
2367
2368 static int
2369 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
2370                    const struct rte_flow_attr *attr __rte_unused,
2371                    const struct rte_flow_item items[] __rte_unused,
2372                    const struct rte_flow_action actions[] __rte_unused,
2373                    bool external __rte_unused,
2374                    int hairpin __rte_unused,
2375                    struct rte_flow_error *error)
2376 {
2377         return rte_flow_error_set(error, ENOTSUP,
2378                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2379 }
2380
2381 static struct mlx5_flow *
2382 flow_null_prepare(struct rte_eth_dev *dev __rte_unused,
2383                   const struct rte_flow_attr *attr __rte_unused,
2384                   const struct rte_flow_item items[] __rte_unused,
2385                   const struct rte_flow_action actions[] __rte_unused,
2386                   struct rte_flow_error *error)
2387 {
2388         rte_flow_error_set(error, ENOTSUP,
2389                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2390         return NULL;
2391 }
2392
2393 static int
2394 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
2395                     struct mlx5_flow *dev_flow __rte_unused,
2396                     const struct rte_flow_attr *attr __rte_unused,
2397                     const struct rte_flow_item items[] __rte_unused,
2398                     const struct rte_flow_action actions[] __rte_unused,
2399                     struct rte_flow_error *error)
2400 {
2401         return rte_flow_error_set(error, ENOTSUP,
2402                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2403 }
2404
2405 static int
2406 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
2407                 struct rte_flow *flow __rte_unused,
2408                 struct rte_flow_error *error)
2409 {
2410         return rte_flow_error_set(error, ENOTSUP,
2411                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2412 }
2413
2414 static void
2415 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
2416                  struct rte_flow *flow __rte_unused)
2417 {
2418 }
2419
2420 static void
2421 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
2422                   struct rte_flow *flow __rte_unused)
2423 {
2424 }
2425
2426 static int
2427 flow_null_query(struct rte_eth_dev *dev __rte_unused,
2428                 struct rte_flow *flow __rte_unused,
2429                 const struct rte_flow_action *actions __rte_unused,
2430                 void *data __rte_unused,
2431                 struct rte_flow_error *error)
2432 {
2433         return rte_flow_error_set(error, ENOTSUP,
2434                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2435 }
2436
2437 /* Void driver to protect from null pointer reference. */
2438 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
2439         .validate = flow_null_validate,
2440         .prepare = flow_null_prepare,
2441         .translate = flow_null_translate,
2442         .apply = flow_null_apply,
2443         .remove = flow_null_remove,
2444         .destroy = flow_null_destroy,
2445         .query = flow_null_query,
2446 };
2447
2448 /**
2449  * Select flow driver type according to flow attributes and device
2450  * configuration.
2451  *
2452  * @param[in] dev
2453  *   Pointer to the dev structure.
2454  * @param[in] attr
2455  *   Pointer to the flow attributes.
2456  *
2457  * @return
2458  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
2459  */
2460 static enum mlx5_flow_drv_type
2461 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
2462 {
2463         struct mlx5_priv *priv = dev->data->dev_private;
2464         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
2465
2466         if (attr->transfer && priv->config.dv_esw_en)
2467                 type = MLX5_FLOW_TYPE_DV;
2468         if (!attr->transfer)
2469                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
2470                                                  MLX5_FLOW_TYPE_VERBS;
2471         return type;
2472 }
2473
2474 #define flow_get_drv_ops(type) flow_drv_ops[type]
2475
2476 /**
2477  * Flow driver validation API. This abstracts calling driver specific functions.
2478  * The type of flow driver is determined according to flow attributes.
2479  *
2480  * @param[in] dev
2481  *   Pointer to the dev structure.
2482  * @param[in] attr
2483  *   Pointer to the flow attributes.
2484  * @param[in] items
2485  *   Pointer to the list of items.
2486  * @param[in] actions
2487  *   Pointer to the list of actions.
2488  * @param[in] external
2489  *   This flow rule is created by request external to PMD.
2490  * @param[in] hairpin
2491  *   Number of hairpin TX actions, 0 means classic flow.
2492  * @param[out] error
2493  *   Pointer to the error structure.
2494  *
2495  * @return
2496  *   0 on success, a negative errno value otherwise and rte_errno is set.
2497  */
2498 static inline int
2499 flow_drv_validate(struct rte_eth_dev *dev,
2500                   const struct rte_flow_attr *attr,
2501                   const struct rte_flow_item items[],
2502                   const struct rte_flow_action actions[],
2503                   bool external, int hairpin, struct rte_flow_error *error)
2504 {
2505         const struct mlx5_flow_driver_ops *fops;
2506         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
2507
2508         fops = flow_get_drv_ops(type);
2509         return fops->validate(dev, attr, items, actions, external,
2510                               hairpin, error);
2511 }
2512
2513 /**
2514  * Flow driver preparation API. This abstracts calling driver specific
2515  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2516  * calculates the size of memory required for device flow, allocates the memory,
2517  * initializes the device flow and returns the pointer.
2518  *
2519  * @note
2520  *   This function initializes device flow structure such as dv or verbs in
2521  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2522  *   rest. For example, adding returning device flow to flow->dev_flow list and
2523  *   setting backward reference to the flow should be done out of this function.
2524  *   layers field is not filled either.
2525  *
2526  * @param[in] dev
2527  *   Pointer to the dev structure.
2528  * @param[in] attr
2529  *   Pointer to the flow attributes.
2530  * @param[in] items
2531  *   Pointer to the list of items.
2532  * @param[in] actions
2533  *   Pointer to the list of actions.
2534  * @param[out] error
2535  *   Pointer to the error structure.
2536  *
2537  * @return
2538  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2539  */
2540 static inline struct mlx5_flow *
2541 flow_drv_prepare(struct rte_eth_dev *dev,
2542                  const struct rte_flow *flow,
2543                  const struct rte_flow_attr *attr,
2544                  const struct rte_flow_item items[],
2545                  const struct rte_flow_action actions[],
2546                  struct rte_flow_error *error)
2547 {
2548         const struct mlx5_flow_driver_ops *fops;
2549         enum mlx5_flow_drv_type type = flow->drv_type;
2550
2551         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2552         fops = flow_get_drv_ops(type);
2553         return fops->prepare(dev, attr, items, actions, error);
2554 }
2555
2556 /**
2557  * Flow driver translation API. This abstracts calling driver specific
2558  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2559  * translates a generic flow into a driver flow. flow_drv_prepare() must
2560  * precede.
2561  *
2562  * @note
2563  *   dev_flow->layers could be filled as a result of parsing during translation
2564  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2565  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2566  *   flow->actions could be overwritten even though all the expanded dev_flows
2567  *   have the same actions.
2568  *
2569  * @param[in] dev
2570  *   Pointer to the rte dev structure.
2571  * @param[in, out] dev_flow
2572  *   Pointer to the mlx5 flow.
2573  * @param[in] attr
2574  *   Pointer to the flow attributes.
2575  * @param[in] items
2576  *   Pointer to the list of items.
2577  * @param[in] actions
2578  *   Pointer to the list of actions.
2579  * @param[out] error
2580  *   Pointer to the error structure.
2581  *
2582  * @return
2583  *   0 on success, a negative errno value otherwise and rte_errno is set.
2584  */
2585 static inline int
2586 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2587                    const struct rte_flow_attr *attr,
2588                    const struct rte_flow_item items[],
2589                    const struct rte_flow_action actions[],
2590                    struct rte_flow_error *error)
2591 {
2592         const struct mlx5_flow_driver_ops *fops;
2593         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2594
2595         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2596         fops = flow_get_drv_ops(type);
2597         return fops->translate(dev, dev_flow, attr, items, actions, error);
2598 }
2599
2600 /**
2601  * Flow driver apply API. This abstracts calling driver specific functions.
2602  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2603  * translated driver flows on to device. flow_drv_translate() must precede.
2604  *
2605  * @param[in] dev
2606  *   Pointer to Ethernet device structure.
2607  * @param[in, out] flow
2608  *   Pointer to flow structure.
2609  * @param[out] error
2610  *   Pointer to error structure.
2611  *
2612  * @return
2613  *   0 on success, a negative errno value otherwise and rte_errno is set.
2614  */
2615 static inline int
2616 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2617                struct rte_flow_error *error)
2618 {
2619         const struct mlx5_flow_driver_ops *fops;
2620         enum mlx5_flow_drv_type type = flow->drv_type;
2621
2622         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2623         fops = flow_get_drv_ops(type);
2624         return fops->apply(dev, flow, error);
2625 }
2626
2627 /**
2628  * Flow driver remove API. This abstracts calling driver specific functions.
2629  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2630  * on device. All the resources of the flow should be freed by calling
2631  * flow_drv_destroy().
2632  *
2633  * @param[in] dev
2634  *   Pointer to Ethernet device.
2635  * @param[in, out] flow
2636  *   Pointer to flow structure.
2637  */
2638 static inline void
2639 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2640 {
2641         const struct mlx5_flow_driver_ops *fops;
2642         enum mlx5_flow_drv_type type = flow->drv_type;
2643
2644         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2645         fops = flow_get_drv_ops(type);
2646         fops->remove(dev, flow);
2647 }
2648
2649 /**
2650  * Flow driver destroy API. This abstracts calling driver specific functions.
2651  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2652  * on device and releases resources of the flow.
2653  *
2654  * @param[in] dev
2655  *   Pointer to Ethernet device.
2656  * @param[in, out] flow
2657  *   Pointer to flow structure.
2658  */
2659 static inline void
2660 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2661 {
2662         const struct mlx5_flow_driver_ops *fops;
2663         enum mlx5_flow_drv_type type = flow->drv_type;
2664
2665         flow_mreg_split_qrss_release(dev, flow);
2666         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2667         fops = flow_get_drv_ops(type);
2668         fops->destroy(dev, flow);
2669 }
2670
2671 /**
2672  * Get RSS action from the action list.
2673  *
2674  * @param[in] actions
2675  *   Pointer to the list of actions.
2676  *
2677  * @return
2678  *   Pointer to the RSS action if exist, else return NULL.
2679  */
2680 static const struct rte_flow_action_rss*
2681 flow_get_rss_action(const struct rte_flow_action actions[])
2682 {
2683         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2684                 switch (actions->type) {
2685                 case RTE_FLOW_ACTION_TYPE_RSS:
2686                         return (const struct rte_flow_action_rss *)
2687                                actions->conf;
2688                 default:
2689                         break;
2690                 }
2691         }
2692         return NULL;
2693 }
2694
2695 static unsigned int
2696 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2697 {
2698         const struct rte_flow_item *item;
2699         unsigned int has_vlan = 0;
2700
2701         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2702                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2703                         has_vlan = 1;
2704                         break;
2705                 }
2706         }
2707         if (has_vlan)
2708                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2709                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2710         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2711                                MLX5_EXPANSION_ROOT_OUTER;
2712 }
2713
2714 /**
2715  *  Get layer flags from the prefix flow.
2716  *
2717  *  Some flows may be split to several subflows, the prefix subflow gets the
2718  *  match items and the suffix sub flow gets the actions.
2719  *  Some actions need the user defined match item flags to get the detail for
2720  *  the action.
2721  *  This function helps the suffix flow to get the item layer flags from prefix
2722  *  subflow.
2723  *
2724  * @param[in] dev_flow
2725  *   Pointer the created preifx subflow.
2726  *
2727  * @return
2728  *   The layers get from prefix subflow.
2729  */
2730 static inline uint64_t
2731 flow_get_prefix_layer_flags(struct mlx5_flow *dev_flow)
2732 {
2733         uint64_t layers = 0;
2734
2735         /*
2736          * Layers bits could be localization, but usually the compiler will
2737          * help to do the optimization work for source code.
2738          * If no decap actions, use the layers directly.
2739          */
2740         if (!(dev_flow->act_flags & MLX5_FLOW_ACTION_DECAP))
2741                 return dev_flow->handle->layers;
2742         /* Convert L3 layers with decap action. */
2743         if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L3_IPV4)
2744                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
2745         else if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L3_IPV6)
2746                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
2747         /* Convert L4 layers with decap action.  */
2748         if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L4_TCP)
2749                 layers |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
2750         else if (dev_flow->handle->layers & MLX5_FLOW_LAYER_INNER_L4_UDP)
2751                 layers |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
2752         return layers;
2753 }
2754
2755 /**
2756  * Get metadata split action information.
2757  *
2758  * @param[in] actions
2759  *   Pointer to the list of actions.
2760  * @param[out] qrss
2761  *   Pointer to the return pointer.
2762  * @param[out] qrss_type
2763  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
2764  *   if no QUEUE/RSS is found.
2765  * @param[out] encap_idx
2766  *   Pointer to the index of the encap action if exists, otherwise the last
2767  *   action index.
2768  *
2769  * @return
2770  *   Total number of actions.
2771  */
2772 static int
2773 flow_parse_metadata_split_actions_info(const struct rte_flow_action actions[],
2774                                        const struct rte_flow_action **qrss,
2775                                        int *encap_idx)
2776 {
2777         const struct rte_flow_action_raw_encap *raw_encap;
2778         int actions_n = 0;
2779         int raw_decap_idx = -1;
2780
2781         *encap_idx = -1;
2782         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2783                 switch (actions->type) {
2784                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2785                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2786                         *encap_idx = actions_n;
2787                         break;
2788                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
2789                         raw_decap_idx = actions_n;
2790                         break;
2791                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2792                         raw_encap = actions->conf;
2793                         if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
2794                                 *encap_idx = raw_decap_idx != -1 ?
2795                                                       raw_decap_idx : actions_n;
2796                         break;
2797                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2798                 case RTE_FLOW_ACTION_TYPE_RSS:
2799                         *qrss = actions;
2800                         break;
2801                 default:
2802                         break;
2803                 }
2804                 actions_n++;
2805         }
2806         if (*encap_idx == -1)
2807                 *encap_idx = actions_n;
2808         /* Count RTE_FLOW_ACTION_TYPE_END. */
2809         return actions_n + 1;
2810 }
2811
2812 /**
2813  * Check meter action from the action list.
2814  *
2815  * @param[in] actions
2816  *   Pointer to the list of actions.
2817  * @param[out] mtr
2818  *   Pointer to the meter exist flag.
2819  *
2820  * @return
2821  *   Total number of actions.
2822  */
2823 static int
2824 flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
2825 {
2826         int actions_n = 0;
2827
2828         MLX5_ASSERT(mtr);
2829         *mtr = 0;
2830         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2831                 switch (actions->type) {
2832                 case RTE_FLOW_ACTION_TYPE_METER:
2833                         *mtr = 1;
2834                         break;
2835                 default:
2836                         break;
2837                 }
2838                 actions_n++;
2839         }
2840         /* Count RTE_FLOW_ACTION_TYPE_END. */
2841         return actions_n + 1;
2842 }
2843
2844 /**
2845  * Check if the flow should be splited due to hairpin.
2846  * The reason for the split is that in current HW we can't
2847  * support encap on Rx, so if a flow have encap we move it
2848  * to Tx.
2849  *
2850  * @param dev
2851  *   Pointer to Ethernet device.
2852  * @param[in] attr
2853  *   Flow rule attributes.
2854  * @param[in] actions
2855  *   Associated actions (list terminated by the END action).
2856  *
2857  * @return
2858  *   > 0 the number of actions and the flow should be split,
2859  *   0 when no split required.
2860  */
2861 static int
2862 flow_check_hairpin_split(struct rte_eth_dev *dev,
2863                          const struct rte_flow_attr *attr,
2864                          const struct rte_flow_action actions[])
2865 {
2866         int queue_action = 0;
2867         int action_n = 0;
2868         int encap = 0;
2869         const struct rte_flow_action_queue *queue;
2870         const struct rte_flow_action_rss *rss;
2871         const struct rte_flow_action_raw_encap *raw_encap;
2872
2873         if (!attr->ingress)
2874                 return 0;
2875         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2876                 switch (actions->type) {
2877                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2878                         queue = actions->conf;
2879                         if (queue == NULL)
2880                                 return 0;
2881                         if (mlx5_rxq_get_type(dev, queue->index) !=
2882                             MLX5_RXQ_TYPE_HAIRPIN)
2883                                 return 0;
2884                         queue_action = 1;
2885                         action_n++;
2886                         break;
2887                 case RTE_FLOW_ACTION_TYPE_RSS:
2888                         rss = actions->conf;
2889                         if (rss == NULL || rss->queue_num == 0)
2890                                 return 0;
2891                         if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
2892                             MLX5_RXQ_TYPE_HAIRPIN)
2893                                 return 0;
2894                         queue_action = 1;
2895                         action_n++;
2896                         break;
2897                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2898                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2899                         encap = 1;
2900                         action_n++;
2901                         break;
2902                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2903                         raw_encap = actions->conf;
2904                         if (raw_encap->size >
2905                             (sizeof(struct rte_flow_item_eth) +
2906                              sizeof(struct rte_flow_item_ipv4)))
2907                                 encap = 1;
2908                         action_n++;
2909                         break;
2910                 default:
2911                         action_n++;
2912                         break;
2913                 }
2914         }
2915         if (encap == 1 && queue_action)
2916                 return action_n;
2917         return 0;
2918 }
2919
2920 /* Declare flow create/destroy prototype in advance. */
2921 static uint32_t
2922 flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
2923                  const struct rte_flow_attr *attr,
2924                  const struct rte_flow_item items[],
2925                  const struct rte_flow_action actions[],
2926                  bool external, struct rte_flow_error *error);
2927
2928 static void
2929 flow_list_destroy(struct rte_eth_dev *dev, uint32_t *list,
2930                   uint32_t flow_idx);
2931
2932 /**
2933  * Add a flow of copying flow metadata registers in RX_CP_TBL.
2934  *
2935  * As mark_id is unique, if there's already a registered flow for the mark_id,
2936  * return by increasing the reference counter of the resource. Otherwise, create
2937  * the resource (mcp_res) and flow.
2938  *
2939  * Flow looks like,
2940  *   - If ingress port is ANY and reg_c[1] is mark_id,
2941  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
2942  *
2943  * For default flow (zero mark_id), flow is like,
2944  *   - If ingress port is ANY,
2945  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
2946  *
2947  * @param dev
2948  *   Pointer to Ethernet device.
2949  * @param mark_id
2950  *   ID of MARK action, zero means default flow for META.
2951  * @param[out] error
2952  *   Perform verbose error reporting if not NULL.
2953  *
2954  * @return
2955  *   Associated resource on success, NULL otherwise and rte_errno is set.
2956  */
2957 static struct mlx5_flow_mreg_copy_resource *
2958 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
2959                           struct rte_flow_error *error)
2960 {
2961         struct mlx5_priv *priv = dev->data->dev_private;
2962         struct rte_flow_attr attr = {
2963                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
2964                 .ingress = 1,
2965         };
2966         struct mlx5_rte_flow_item_tag tag_spec = {
2967                 .data = mark_id,
2968         };
2969         struct rte_flow_item items[] = {
2970                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
2971         };
2972         struct rte_flow_action_mark ftag = {
2973                 .id = mark_id,
2974         };
2975         struct mlx5_flow_action_copy_mreg cp_mreg = {
2976                 .dst = REG_B,
2977                 .src = 0,
2978         };
2979         struct rte_flow_action_jump jump = {
2980                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
2981         };
2982         struct rte_flow_action actions[] = {
2983                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
2984         };
2985         struct mlx5_flow_mreg_copy_resource *mcp_res;
2986         uint32_t idx = 0;
2987         int ret;
2988
2989         /* Fill the register fileds in the flow. */
2990         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
2991         if (ret < 0)
2992                 return NULL;
2993         tag_spec.id = ret;
2994         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
2995         if (ret < 0)
2996                 return NULL;
2997         cp_mreg.src = ret;
2998         /* Check if already registered. */
2999         MLX5_ASSERT(priv->mreg_cp_tbl);
3000         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
3001         if (mcp_res) {
3002                 /* For non-default rule. */
3003                 if (mark_id != MLX5_DEFAULT_COPY_ID)
3004                         mcp_res->refcnt++;
3005                 MLX5_ASSERT(mark_id != MLX5_DEFAULT_COPY_ID ||
3006                             mcp_res->refcnt == 1);
3007                 return mcp_res;
3008         }
3009         /* Provide the full width of FLAG specific value. */
3010         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
3011                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
3012         /* Build a new flow. */
3013         if (mark_id != MLX5_DEFAULT_COPY_ID) {
3014                 items[0] = (struct rte_flow_item){
3015                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3016                         .spec = &tag_spec,
3017                 };
3018                 items[1] = (struct rte_flow_item){
3019                         .type = RTE_FLOW_ITEM_TYPE_END,
3020                 };
3021                 actions[0] = (struct rte_flow_action){
3022                         .type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
3023                         .conf = &ftag,
3024                 };
3025                 actions[1] = (struct rte_flow_action){
3026                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3027                         .conf = &cp_mreg,
3028                 };
3029                 actions[2] = (struct rte_flow_action){
3030                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
3031                         .conf = &jump,
3032                 };
3033                 actions[3] = (struct rte_flow_action){
3034                         .type = RTE_FLOW_ACTION_TYPE_END,
3035                 };
3036         } else {
3037                 /* Default rule, wildcard match. */
3038                 attr.priority = MLX5_FLOW_PRIO_RSVD;
3039                 items[0] = (struct rte_flow_item){
3040                         .type = RTE_FLOW_ITEM_TYPE_END,
3041                 };
3042                 actions[0] = (struct rte_flow_action){
3043                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3044                         .conf = &cp_mreg,
3045                 };
3046                 actions[1] = (struct rte_flow_action){
3047                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
3048                         .conf = &jump,
3049                 };
3050                 actions[2] = (struct rte_flow_action){
3051                         .type = RTE_FLOW_ACTION_TYPE_END,
3052                 };
3053         }
3054         /* Build a new entry. */
3055         mcp_res = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_MCP], &idx);
3056         if (!mcp_res) {
3057                 rte_errno = ENOMEM;
3058                 return NULL;
3059         }
3060         mcp_res->idx = idx;
3061         /*
3062          * The copy Flows are not included in any list. There
3063          * ones are referenced from other Flows and can not
3064          * be applied, removed, deleted in ardbitrary order
3065          * by list traversing.
3066          */
3067         mcp_res->rix_flow = flow_list_create(dev, NULL, &attr, items,
3068                                          actions, false, error);
3069         if (!mcp_res->rix_flow)
3070                 goto error;
3071         mcp_res->refcnt++;
3072         mcp_res->hlist_ent.key = mark_id;
3073         ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
3074                                 &mcp_res->hlist_ent);
3075         MLX5_ASSERT(!ret);
3076         if (ret)
3077                 goto error;
3078         return mcp_res;
3079 error:
3080         if (mcp_res->rix_flow)
3081                 flow_list_destroy(dev, NULL, mcp_res->rix_flow);
3082         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MCP], mcp_res->idx);
3083         return NULL;
3084 }
3085
3086 /**
3087  * Release flow in RX_CP_TBL.
3088  *
3089  * @param dev
3090  *   Pointer to Ethernet device.
3091  * @flow
3092  *   Parent flow for wich copying is provided.
3093  */
3094 static void
3095 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
3096                           struct rte_flow *flow)
3097 {
3098         struct mlx5_flow_mreg_copy_resource *mcp_res;
3099         struct mlx5_priv *priv = dev->data->dev_private;
3100
3101         if (!flow->rix_mreg_copy)
3102                 return;
3103         mcp_res = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MCP],
3104                                  flow->rix_mreg_copy);
3105         if (!mcp_res || !priv->mreg_cp_tbl)
3106                 return;
3107         if (flow->copy_applied) {
3108                 MLX5_ASSERT(mcp_res->appcnt);
3109                 flow->copy_applied = 0;
3110                 --mcp_res->appcnt;
3111                 if (!mcp_res->appcnt) {
3112                         struct rte_flow *mcp_flow = mlx5_ipool_get
3113                                         (priv->sh->ipool[MLX5_IPOOL_RTE_FLOW],
3114                                         mcp_res->rix_flow);
3115
3116                         if (mcp_flow)
3117                                 flow_drv_remove(dev, mcp_flow);
3118                 }
3119         }
3120         /*
3121          * We do not check availability of metadata registers here,
3122          * because copy resources are not allocated in this case.
3123          */
3124         if (--mcp_res->refcnt)
3125                 return;
3126         MLX5_ASSERT(mcp_res->rix_flow);
3127         flow_list_destroy(dev, NULL, mcp_res->rix_flow);
3128         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3129         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MCP], mcp_res->idx);
3130         flow->rix_mreg_copy = 0;
3131 }
3132
3133 /**
3134  * Start flow in RX_CP_TBL.
3135  *
3136  * @param dev
3137  *   Pointer to Ethernet device.
3138  * @flow
3139  *   Parent flow for wich copying is provided.
3140  *
3141  * @return
3142  *   0 on success, a negative errno value otherwise and rte_errno is set.
3143  */
3144 static int
3145 flow_mreg_start_copy_action(struct rte_eth_dev *dev,
3146                             struct rte_flow *flow)
3147 {
3148         struct mlx5_flow_mreg_copy_resource *mcp_res;
3149         struct mlx5_priv *priv = dev->data->dev_private;
3150         int ret;
3151
3152         if (!flow->rix_mreg_copy || flow->copy_applied)
3153                 return 0;
3154         mcp_res = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MCP],
3155                                  flow->rix_mreg_copy);
3156         if (!mcp_res)
3157                 return 0;
3158         if (!mcp_res->appcnt) {
3159                 struct rte_flow *mcp_flow = mlx5_ipool_get
3160                                 (priv->sh->ipool[MLX5_IPOOL_RTE_FLOW],
3161                                 mcp_res->rix_flow);
3162
3163                 if (mcp_flow) {
3164                         ret = flow_drv_apply(dev, mcp_flow, NULL);
3165                         if (ret)
3166                                 return ret;
3167                 }
3168         }
3169         ++mcp_res->appcnt;
3170         flow->copy_applied = 1;
3171         return 0;
3172 }
3173
3174 /**
3175  * Stop flow in RX_CP_TBL.
3176  *
3177  * @param dev
3178  *   Pointer to Ethernet device.
3179  * @flow
3180  *   Parent flow for wich copying is provided.
3181  */
3182 static void
3183 flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
3184                            struct rte_flow *flow)
3185 {
3186         struct mlx5_flow_mreg_copy_resource *mcp_res;
3187         struct mlx5_priv *priv = dev->data->dev_private;
3188
3189         if (!flow->rix_mreg_copy || !flow->copy_applied)
3190                 return;
3191         mcp_res = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_MCP],
3192                                  flow->rix_mreg_copy);
3193         if (!mcp_res)
3194                 return;
3195         MLX5_ASSERT(mcp_res->appcnt);
3196         --mcp_res->appcnt;
3197         flow->copy_applied = 0;
3198         if (!mcp_res->appcnt) {
3199                 struct rte_flow *mcp_flow = mlx5_ipool_get
3200                                 (priv->sh->ipool[MLX5_IPOOL_RTE_FLOW],
3201                                 mcp_res->rix_flow);
3202
3203                 if (mcp_flow)
3204                         flow_drv_remove(dev, mcp_flow);
3205         }
3206 }
3207
3208 /**
3209  * Remove the default copy action from RX_CP_TBL.
3210  *
3211  * @param dev
3212  *   Pointer to Ethernet device.
3213  */
3214 static void
3215 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
3216 {
3217         struct mlx5_flow_mreg_copy_resource *mcp_res;
3218         struct mlx5_priv *priv = dev->data->dev_private;
3219
3220         /* Check if default flow is registered. */
3221         if (!priv->mreg_cp_tbl)
3222                 return;
3223         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
3224                                             MLX5_DEFAULT_COPY_ID);
3225         if (!mcp_res)
3226                 return;
3227         MLX5_ASSERT(mcp_res->rix_flow);
3228         flow_list_destroy(dev, NULL, mcp_res->rix_flow);
3229         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3230         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MCP], mcp_res->idx);
3231 }
3232
3233 /**
3234  * Add the default copy action in in RX_CP_TBL.
3235  *
3236  * @param dev
3237  *   Pointer to Ethernet device.
3238  * @param[out] error
3239  *   Perform verbose error reporting if not NULL.
3240  *
3241  * @return
3242  *   0 for success, negative value otherwise and rte_errno is set.
3243  */
3244 static int
3245 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
3246                                   struct rte_flow_error *error)
3247 {
3248         struct mlx5_priv *priv = dev->data->dev_private;
3249         struct mlx5_flow_mreg_copy_resource *mcp_res;
3250
3251         /* Check whether extensive metadata feature is engaged. */
3252         if (!priv->config.dv_flow_en ||
3253             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3254             !mlx5_flow_ext_mreg_supported(dev) ||
3255             !priv->sh->dv_regc0_mask)
3256                 return 0;
3257         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
3258         if (!mcp_res)
3259                 return -rte_errno;
3260         return 0;
3261 }
3262
3263 /**
3264  * Add a flow of copying flow metadata registers in RX_CP_TBL.
3265  *
3266  * All the flow having Q/RSS action should be split by
3267  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
3268  * performs the following,
3269  *   - CQE->flow_tag := reg_c[1] (MARK)
3270  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3271  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
3272  * but there should be a flow per each MARK ID set by MARK action.
3273  *
3274  * For the aforementioned reason, if there's a MARK action in flow's action
3275  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
3276  * the MARK ID to CQE's flow_tag like,
3277  *   - If reg_c[1] is mark_id,
3278  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3279  *
3280  * For SET_META action which stores value in reg_c[0], as the destination is
3281  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
3282  * MARK ID means the default flow. The default flow looks like,
3283  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3284  *
3285  * @param dev
3286  *   Pointer to Ethernet device.
3287  * @param flow
3288  *   Pointer to flow structure.
3289  * @param[in] actions
3290  *   Pointer to the list of actions.
3291  * @param[out] error
3292  *   Perform verbose error reporting if not NULL.
3293  *
3294  * @return
3295  *   0 on success, negative value otherwise and rte_errno is set.
3296  */
3297 static int
3298 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
3299                             struct rte_flow *flow,
3300                             const struct rte_flow_action *actions,
3301                             struct rte_flow_error *error)
3302 {
3303         struct mlx5_priv *priv = dev->data->dev_private;
3304         struct mlx5_dev_config *config = &priv->config;
3305         struct mlx5_flow_mreg_copy_resource *mcp_res;
3306         const struct rte_flow_action_mark *mark;
3307
3308         /* Check whether extensive metadata feature is engaged. */
3309         if (!config->dv_flow_en ||
3310             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3311             !mlx5_flow_ext_mreg_supported(dev) ||
3312             !priv->sh->dv_regc0_mask)
3313                 return 0;
3314         /* Find MARK action. */
3315         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3316                 switch (actions->type) {
3317                 case RTE_FLOW_ACTION_TYPE_FLAG:
3318                         mcp_res = flow_mreg_add_copy_action
3319                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
3320                         if (!mcp_res)
3321                                 return -rte_errno;
3322                         flow->rix_mreg_copy = mcp_res->idx;
3323                         if (dev->data->dev_started) {
3324                                 mcp_res->appcnt++;
3325                                 flow->copy_applied = 1;
3326                         }
3327                         return 0;
3328                 case RTE_FLOW_ACTION_TYPE_MARK:
3329                         mark = (const struct rte_flow_action_mark *)
3330                                 actions->conf;
3331                         mcp_res =
3332                                 flow_mreg_add_copy_action(dev, mark->id, error);
3333                         if (!mcp_res)
3334                                 return -rte_errno;
3335                         flow->rix_mreg_copy = mcp_res->idx;
3336                         if (dev->data->dev_started) {
3337                                 mcp_res->appcnt++;
3338                                 flow->copy_applied = 1;
3339                         }
3340                         return 0;
3341                 default:
3342                         break;
3343                 }
3344         }
3345         return 0;
3346 }
3347
3348 #define MLX5_MAX_SPLIT_ACTIONS 24
3349 #define MLX5_MAX_SPLIT_ITEMS 24
3350
3351 /**
3352  * Split the hairpin flow.
3353  * Since HW can't support encap on Rx we move the encap to Tx.
3354  * If the count action is after the encap then we also
3355  * move the count action. in this case the count will also measure
3356  * the outer bytes.
3357  *
3358  * @param dev
3359  *   Pointer to Ethernet device.
3360  * @param[in] actions
3361  *   Associated actions (list terminated by the END action).
3362  * @param[out] actions_rx
3363  *   Rx flow actions.
3364  * @param[out] actions_tx
3365  *   Tx flow actions..
3366  * @param[out] pattern_tx
3367  *   The pattern items for the Tx flow.
3368  * @param[out] flow_id
3369  *   The flow ID connected to this flow.
3370  *
3371  * @return
3372  *   0 on success.
3373  */
3374 static int
3375 flow_hairpin_split(struct rte_eth_dev *dev,
3376                    const struct rte_flow_action actions[],
3377                    struct rte_flow_action actions_rx[],
3378                    struct rte_flow_action actions_tx[],
3379                    struct rte_flow_item pattern_tx[],
3380                    uint32_t *flow_id)
3381 {
3382         struct mlx5_priv *priv = dev->data->dev_private;
3383         const struct rte_flow_action_raw_encap *raw_encap;
3384         const struct rte_flow_action_raw_decap *raw_decap;
3385         struct mlx5_rte_flow_action_set_tag *set_tag;
3386         struct rte_flow_action *tag_action;
3387         struct mlx5_rte_flow_item_tag *tag_item;
3388         struct rte_flow_item *item;
3389         char *addr;
3390         int encap = 0;
3391
3392         mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
3393         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3394                 switch (actions->type) {
3395                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3396                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3397                         rte_memcpy(actions_tx, actions,
3398                                sizeof(struct rte_flow_action));
3399                         actions_tx++;
3400                         break;
3401                 case RTE_FLOW_ACTION_TYPE_COUNT:
3402                         if (encap) {
3403                                 rte_memcpy(actions_tx, actions,
3404                                            sizeof(struct rte_flow_action));
3405                                 actions_tx++;
3406                         } else {
3407                                 rte_memcpy(actions_rx, actions,
3408                                            sizeof(struct rte_flow_action));
3409                                 actions_rx++;
3410                         }
3411                         break;
3412                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3413                         raw_encap = actions->conf;
3414                         if (raw_encap->size >
3415                             (sizeof(struct rte_flow_item_eth) +
3416                              sizeof(struct rte_flow_item_ipv4))) {
3417                                 memcpy(actions_tx, actions,
3418                                        sizeof(struct rte_flow_action));
3419                                 actions_tx++;
3420                                 encap = 1;
3421                         } else {
3422                                 rte_memcpy(actions_rx, actions,
3423                                            sizeof(struct rte_flow_action));
3424                                 actions_rx++;
3425                         }
3426                         break;
3427                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3428                         raw_decap = actions->conf;
3429                         if (raw_decap->size <
3430                             (sizeof(struct rte_flow_item_eth) +
3431                              sizeof(struct rte_flow_item_ipv4))) {
3432                                 memcpy(actions_tx, actions,
3433                                        sizeof(struct rte_flow_action));
3434                                 actions_tx++;
3435                         } else {
3436                                 rte_memcpy(actions_rx, actions,
3437                                            sizeof(struct rte_flow_action));
3438                                 actions_rx++;
3439                         }
3440                         break;
3441                 default:
3442                         rte_memcpy(actions_rx, actions,
3443                                    sizeof(struct rte_flow_action));
3444                         actions_rx++;
3445                         break;
3446                 }
3447         }
3448         /* Add set meta action and end action for the Rx flow. */
3449         tag_action = actions_rx;
3450         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3451         actions_rx++;
3452         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
3453         actions_rx++;
3454         set_tag = (void *)actions_rx;
3455         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
3456         MLX5_ASSERT(set_tag->id > REG_NONE);
3457         set_tag->data = *flow_id;
3458         tag_action->conf = set_tag;
3459         /* Create Tx item list. */
3460         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
3461         addr = (void *)&pattern_tx[2];
3462         item = pattern_tx;
3463         item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3464         tag_item = (void *)addr;
3465         tag_item->data = *flow_id;
3466         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
3467         MLX5_ASSERT(set_tag->id > REG_NONE);
3468         item->spec = tag_item;
3469         addr += sizeof(struct mlx5_rte_flow_item_tag);
3470         tag_item = (void *)addr;
3471         tag_item->data = UINT32_MAX;
3472         tag_item->id = UINT16_MAX;
3473         item->mask = tag_item;
3474         addr += sizeof(struct mlx5_rte_flow_item_tag);
3475         item->last = NULL;
3476         item++;
3477         item->type = RTE_FLOW_ITEM_TYPE_END;
3478         return 0;
3479 }
3480
3481 /**
3482  * The last stage of splitting chain, just creates the subflow
3483  * without any modification.
3484  *
3485  * @param[in] dev
3486  *   Pointer to Ethernet device.
3487  * @param[in] flow
3488  *   Parent flow structure pointer.
3489  * @param[in, out] sub_flow
3490  *   Pointer to return the created subflow, may be NULL.
3491  * @param[in] prefix_layers
3492  *   Prefix subflow layers, may be 0.
3493  * @param[in] attr
3494  *   Flow rule attributes.
3495  * @param[in] items
3496  *   Pattern specification (list terminated by the END pattern item).
3497  * @param[in] actions
3498  *   Associated actions (list terminated by the END action).
3499  * @param[in] external
3500  *   This flow rule is created by request external to PMD.
3501  * @param[out] error
3502  *   Perform verbose error reporting if not NULL.
3503  * @return
3504  *   0 on success, negative value otherwise
3505  */
3506 static int
3507 flow_create_split_inner(struct rte_eth_dev *dev,
3508                         struct rte_flow *flow,
3509                         struct mlx5_flow **sub_flow,
3510                         uint64_t prefix_layers,
3511                         const struct rte_flow_attr *attr,
3512                         const struct rte_flow_item items[],
3513                         const struct rte_flow_action actions[],
3514                         bool external, struct rte_flow_error *error)
3515 {
3516         struct mlx5_flow *dev_flow;
3517
3518         dev_flow = flow_drv_prepare(dev, flow, attr, items, actions, error);
3519         if (!dev_flow)
3520                 return -rte_errno;
3521         dev_flow->flow = flow;
3522         dev_flow->external = external;
3523         /* Subflow object was created, we must include one in the list. */
3524         SILIST_INSERT(&flow->dev_handles, dev_flow->handle_idx,
3525                       dev_flow->handle, next);
3526         /*
3527          * If dev_flow is as one of the suffix flow, some actions in suffix
3528          * flow may need some user defined item layer flags.
3529          */
3530         if (prefix_layers)
3531                 dev_flow->handle->layers = prefix_layers;
3532         if (sub_flow)
3533                 *sub_flow = dev_flow;
3534         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
3535 }
3536
3537 /**
3538  * Split the meter flow.
3539  *
3540  * As meter flow will split to three sub flow, other than meter
3541  * action, the other actions make sense to only meter accepts
3542  * the packet. If it need to be dropped, no other additional
3543  * actions should be take.
3544  *
3545  * One kind of special action which decapsulates the L3 tunnel
3546  * header will be in the prefix sub flow, as not to take the
3547  * L3 tunnel header into account.
3548  *
3549  * @param dev
3550  *   Pointer to Ethernet device.
3551  * @param[in] items
3552  *   Pattern specification (list terminated by the END pattern item).
3553  * @param[out] sfx_items
3554  *   Suffix flow match items (list terminated by the END pattern item).
3555  * @param[in] actions
3556  *   Associated actions (list terminated by the END action).
3557  * @param[out] actions_sfx
3558  *   Suffix flow actions.
3559  * @param[out] actions_pre
3560  *   Prefix flow actions.
3561  * @param[out] pattern_sfx
3562  *   The pattern items for the suffix flow.
3563  * @param[out] tag_sfx
3564  *   Pointer to suffix flow tag.
3565  *
3566  * @return
3567  *   0 on success.
3568  */
3569 static int
3570 flow_meter_split_prep(struct rte_eth_dev *dev,
3571                  const struct rte_flow_item items[],
3572                  struct rte_flow_item sfx_items[],
3573                  const struct rte_flow_action actions[],
3574                  struct rte_flow_action actions_sfx[],
3575                  struct rte_flow_action actions_pre[])
3576 {
3577         struct rte_flow_action *tag_action = NULL;
3578         struct rte_flow_item *tag_item;
3579         struct mlx5_rte_flow_action_set_tag *set_tag;
3580         struct rte_flow_error error;
3581         const struct rte_flow_action_raw_encap *raw_encap;
3582         const struct rte_flow_action_raw_decap *raw_decap;
3583         struct mlx5_rte_flow_item_tag *tag_spec;
3584         struct mlx5_rte_flow_item_tag *tag_mask;
3585         uint32_t tag_id;
3586         bool copy_vlan = false;
3587
3588         /* Prepare the actions for prefix and suffix flow. */
3589         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3590                 struct rte_flow_action **action_cur = NULL;
3591
3592                 switch (actions->type) {
3593                 case RTE_FLOW_ACTION_TYPE_METER:
3594                         /* Add the extra tag action first. */
3595                         tag_action = actions_pre;
3596                         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3597                         actions_pre++;
3598                         action_cur = &actions_pre;
3599                         break;
3600                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3601                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3602                         action_cur = &actions_pre;
3603                         break;
3604                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3605                         raw_encap = actions->conf;
3606                         if (raw_encap->size < MLX5_ENCAPSULATION_DECISION_SIZE)
3607                                 action_cur = &actions_pre;
3608                         break;
3609                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3610                         raw_decap = actions->conf;
3611                         if (raw_decap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
3612                                 action_cur = &actions_pre;
3613                         break;
3614                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3615                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3616                         copy_vlan = true;
3617                         break;
3618                 default:
3619                         break;
3620                 }
3621                 if (!action_cur)
3622                         action_cur = &actions_sfx;
3623                 memcpy(*action_cur, actions, sizeof(struct rte_flow_action));
3624                 (*action_cur)++;
3625         }
3626         /* Add end action to the actions. */
3627         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
3628         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
3629         actions_pre++;
3630         /* Set the tag. */
3631         set_tag = (void *)actions_pre;
3632         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3633         /*
3634          * Get the id from the qrss_pool to make qrss share the id with meter.
3635          */
3636         tag_id = flow_qrss_get_id(dev);
3637         set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
3638         assert(tag_action);
3639         tag_action->conf = set_tag;
3640         /* Prepare the suffix subflow items. */
3641         tag_item = sfx_items++;
3642         for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
3643                 int item_type = items->type;
3644
3645                 switch (item_type) {
3646                 case RTE_FLOW_ITEM_TYPE_PORT_ID:
3647                         memcpy(sfx_items, items, sizeof(*sfx_items));
3648                         sfx_items++;
3649                         break;
3650                 case RTE_FLOW_ITEM_TYPE_VLAN:
3651                         if (copy_vlan) {
3652                                 memcpy(sfx_items, items, sizeof(*sfx_items));
3653                                 /*
3654                                  * Convert to internal match item, it is used
3655                                  * for vlan push and set vid.
3656                                  */
3657                                 sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_VLAN;
3658                                 sfx_items++;
3659                         }
3660                         break;
3661                 default:
3662                         break;
3663                 }
3664         }
3665         sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
3666         sfx_items++;
3667         tag_spec = (struct mlx5_rte_flow_item_tag *)sfx_items;
3668         tag_spec->data = tag_id << MLX5_MTR_COLOR_BITS;
3669         tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3670         tag_mask = tag_spec + 1;
3671         tag_mask->data = 0xffffff00;
3672         tag_item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3673         tag_item->spec = tag_spec;
3674         tag_item->last = NULL;
3675         tag_item->mask = tag_mask;
3676         return tag_id;
3677 }
3678
3679 /**
3680  * Split action list having QUEUE/RSS for metadata register copy.
3681  *
3682  * Once Q/RSS action is detected in user's action list, the flow action
3683  * should be split in order to copy metadata registers, which will happen in
3684  * RX_CP_TBL like,
3685  *   - CQE->flow_tag := reg_c[1] (MARK)
3686  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3687  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
3688  * This is because the last action of each flow must be a terminal action
3689  * (QUEUE, RSS or DROP).
3690  *
3691  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
3692  * stored and kept in the mlx5_flow structure per each sub_flow.
3693  *
3694  * The Q/RSS action is replaced with,
3695  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
3696  * And the following JUMP action is added at the end,
3697  *   - JUMP, to RX_CP_TBL.
3698  *
3699  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
3700  * flow_create_split_metadata() routine. The flow will look like,
3701  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
3702  *
3703  * @param dev
3704  *   Pointer to Ethernet device.
3705  * @param[out] split_actions
3706  *   Pointer to store split actions to jump to CP_TBL.
3707  * @param[in] actions
3708  *   Pointer to the list of original flow actions.
3709  * @param[in] qrss
3710  *   Pointer to the Q/RSS action.
3711  * @param[in] actions_n
3712  *   Number of original actions.
3713  * @param[out] error
3714  *   Perform verbose error reporting if not NULL.
3715  *
3716  * @return
3717  *   non-zero unique flow_id on success, otherwise 0 and
3718  *   error/rte_error are set.
3719  */
3720 static uint32_t
3721 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
3722                           struct rte_flow_action *split_actions,
3723                           const struct rte_flow_action *actions,
3724                           const struct rte_flow_action *qrss,
3725                           int actions_n, struct rte_flow_error *error)
3726 {
3727         struct mlx5_rte_flow_action_set_tag *set_tag;
3728         struct rte_flow_action_jump *jump;
3729         const int qrss_idx = qrss - actions;
3730         uint32_t flow_id = 0;
3731         int ret = 0;
3732
3733         /*
3734          * Given actions will be split
3735          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
3736          * - Add jump to mreg CP_TBL.
3737          * As a result, there will be one more action.
3738          */
3739         ++actions_n;
3740         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
3741         set_tag = (void *)(split_actions + actions_n);
3742         /*
3743          * If tag action is not set to void(it means we are not the meter
3744          * suffix flow), add the tag action. Since meter suffix flow already
3745          * has the tag added.
3746          */
3747         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
3748                 /*
3749                  * Allocate the new subflow ID. This one is unique within
3750                  * device and not shared with representors. Otherwise,
3751                  * we would have to resolve multi-thread access synch
3752                  * issue. Each flow on the shared device is appended
3753                  * with source vport identifier, so the resulting
3754                  * flows will be unique in the shared (by master and
3755                  * representors) domain even if they have coinciding
3756                  * IDs.
3757                  */
3758                 flow_id = flow_qrss_get_id(dev);
3759                 if (!flow_id)
3760                         return rte_flow_error_set(error, ENOMEM,
3761                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3762                                                   NULL, "can't allocate id "
3763                                                   "for split Q/RSS subflow");
3764                 /* Internal SET_TAG action to set flow ID. */
3765                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
3766                         .data = flow_id,
3767                 };
3768                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
3769                 if (ret < 0)
3770                         return ret;
3771                 set_tag->id = ret;
3772                 /* Construct new actions array. */
3773                 /* Replace QUEUE/RSS action. */
3774                 split_actions[qrss_idx] = (struct rte_flow_action){
3775                         .type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
3776                         .conf = set_tag,
3777                 };
3778         }
3779         /* JUMP action to jump to mreg copy table (CP_TBL). */
3780         jump = (void *)(set_tag + 1);
3781         *jump = (struct rte_flow_action_jump){
3782                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
3783         };
3784         split_actions[actions_n - 2] = (struct rte_flow_action){
3785                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
3786                 .conf = jump,
3787         };
3788         split_actions[actions_n - 1] = (struct rte_flow_action){
3789                 .type = RTE_FLOW_ACTION_TYPE_END,
3790         };
3791         return flow_id;
3792 }
3793
3794 /**
3795  * Extend the given action list for Tx metadata copy.
3796  *
3797  * Copy the given action list to the ext_actions and add flow metadata register
3798  * copy action in order to copy reg_a set by WQE to reg_c[0].
3799  *
3800  * @param[out] ext_actions
3801  *   Pointer to the extended action list.
3802  * @param[in] actions
3803  *   Pointer to the list of actions.
3804  * @param[in] actions_n
3805  *   Number of actions in the list.
3806  * @param[out] error
3807  *   Perform verbose error reporting if not NULL.
3808  * @param[in] encap_idx
3809  *   The encap action inndex.
3810  *
3811  * @return
3812  *   0 on success, negative value otherwise
3813  */
3814 static int
3815 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
3816                        struct rte_flow_action *ext_actions,
3817                        const struct rte_flow_action *actions,
3818                        int actions_n, struct rte_flow_error *error,
3819                        int encap_idx)
3820 {
3821         struct mlx5_flow_action_copy_mreg *cp_mreg =
3822                 (struct mlx5_flow_action_copy_mreg *)
3823                         (ext_actions + actions_n + 1);
3824         int ret;
3825
3826         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
3827         if (ret < 0)
3828                 return ret;
3829         cp_mreg->dst = ret;
3830         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
3831         if (ret < 0)
3832                 return ret;
3833         cp_mreg->src = ret;
3834         if (encap_idx != 0)
3835                 memcpy(ext_actions, actions, sizeof(*ext_actions) * encap_idx);
3836         if (encap_idx == actions_n - 1) {
3837                 ext_actions[actions_n - 1] = (struct rte_flow_action){
3838                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3839                         .conf = cp_mreg,
3840                 };
3841                 ext_actions[actions_n] = (struct rte_flow_action){
3842                         .type = RTE_FLOW_ACTION_TYPE_END,
3843                 };
3844         } else {
3845                 ext_actions[encap_idx] = (struct rte_flow_action){
3846                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3847                         .conf = cp_mreg,
3848                 };
3849                 memcpy(ext_actions + encap_idx + 1, actions + encap_idx,
3850                                 sizeof(*ext_actions) * (actions_n - encap_idx));
3851         }
3852         return 0;
3853 }
3854
3855 /**
3856  * The splitting for metadata feature.
3857  *
3858  * - Q/RSS action on NIC Rx should be split in order to pass by
3859  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
3860  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
3861  *
3862  * - All the actions on NIC Tx should have a mreg copy action to
3863  *   copy reg_a from WQE to reg_c[0].
3864  *
3865  * @param dev
3866  *   Pointer to Ethernet device.
3867  * @param[in] flow
3868  *   Parent flow structure pointer.
3869  * @param[in] prefix_layers
3870  *   Prefix flow layer flags.
3871  * @param[in] attr
3872  *   Flow rule attributes.
3873  * @param[in] items
3874  *   Pattern specification (list terminated by the END pattern item).
3875  * @param[in] actions
3876  *   Associated actions (list terminated by the END action).
3877  * @param[in] external
3878  *   This flow rule is created by request external to PMD.
3879  * @param[out] error
3880  *   Perform verbose error reporting if not NULL.
3881  * @return
3882  *   0 on success, negative value otherwise
3883  */
3884 static int
3885 flow_create_split_metadata(struct rte_eth_dev *dev,
3886                            struct rte_flow *flow,
3887                            uint64_t prefix_layers,
3888                            const struct rte_flow_attr *attr,
3889                            const struct rte_flow_item items[],
3890                            const struct rte_flow_action actions[],
3891                            bool external, struct rte_flow_error *error)
3892 {
3893         struct mlx5_priv *priv = dev->data->dev_private;
3894         struct mlx5_dev_config *config = &priv->config;
3895         const struct rte_flow_action *qrss = NULL;
3896         struct rte_flow_action *ext_actions = NULL;
3897         struct mlx5_flow *dev_flow = NULL;
3898         uint32_t qrss_id = 0;
3899         int mtr_sfx = 0;
3900         size_t act_size;
3901         int actions_n;
3902         int encap_idx;
3903         int ret;
3904
3905         /* Check whether extensive metadata feature is engaged. */
3906         if (!config->dv_flow_en ||
3907             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3908             !mlx5_flow_ext_mreg_supported(dev))
3909                 return flow_create_split_inner(dev, flow, NULL, prefix_layers,
3910                                                attr, items, actions, external,
3911                                                error);
3912         actions_n = flow_parse_metadata_split_actions_info(actions, &qrss,
3913                                                            &encap_idx);
3914         if (qrss) {
3915                 /* Exclude hairpin flows from splitting. */
3916                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
3917                         const struct rte_flow_action_queue *queue;
3918
3919                         queue = qrss->conf;
3920                         if (mlx5_rxq_get_type(dev, queue->index) ==
3921                             MLX5_RXQ_TYPE_HAIRPIN)
3922                                 qrss = NULL;
3923                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
3924                         const struct rte_flow_action_rss *rss;
3925
3926                         rss = qrss->conf;
3927                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
3928                             MLX5_RXQ_TYPE_HAIRPIN)
3929                                 qrss = NULL;
3930                 }
3931         }
3932         if (qrss) {
3933                 /* Check if it is in meter suffix table. */
3934                 mtr_sfx = attr->group == (attr->transfer ?
3935                           (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
3936                           MLX5_FLOW_TABLE_LEVEL_SUFFIX);
3937                 /*
3938                  * Q/RSS action on NIC Rx should be split in order to pass by
3939                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
3940                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
3941                  */
3942                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3943                            sizeof(struct rte_flow_action_set_tag) +
3944                            sizeof(struct rte_flow_action_jump);
3945                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3946                 if (!ext_actions)
3947                         return rte_flow_error_set(error, ENOMEM,
3948                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3949                                                   NULL, "no memory to split "
3950                                                   "metadata flow");
3951                 /*
3952                  * If we are the suffix flow of meter, tag already exist.
3953                  * Set the tag action to void.
3954                  */
3955                 if (mtr_sfx)
3956                         ext_actions[qrss - actions].type =
3957                                                 RTE_FLOW_ACTION_TYPE_VOID;
3958                 else
3959                         ext_actions[qrss - actions].type =
3960                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3961                 /*
3962                  * Create the new actions list with removed Q/RSS action
3963                  * and appended set tag and jump to register copy table
3964                  * (RX_CP_TBL). We should preallocate unique tag ID here
3965                  * in advance, because it is needed for set tag action.
3966                  */
3967                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
3968                                                     qrss, actions_n, error);
3969                 if (!mtr_sfx && !qrss_id) {
3970                         ret = -rte_errno;
3971                         goto exit;
3972                 }
3973         } else if (attr->egress && !attr->transfer) {
3974                 /*
3975                  * All the actions on NIC Tx should have a metadata register
3976                  * copy action to copy reg_a from WQE to reg_c[meta]
3977                  */
3978                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3979                            sizeof(struct mlx5_flow_action_copy_mreg);
3980                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3981                 if (!ext_actions)
3982                         return rte_flow_error_set(error, ENOMEM,
3983                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3984                                                   NULL, "no memory to split "
3985                                                   "metadata flow");
3986                 /* Create the action list appended with copy register. */
3987                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
3988                                              actions_n, error, encap_idx);
3989                 if (ret < 0)
3990                         goto exit;
3991         }
3992         /* Add the unmodified original or prefix subflow. */
3993         ret = flow_create_split_inner(dev, flow, &dev_flow, prefix_layers, attr,
3994                                       items, ext_actions ? ext_actions :
3995                                       actions, external, error);
3996         if (ret < 0)
3997                 goto exit;
3998         MLX5_ASSERT(dev_flow);
3999         if (qrss) {
4000                 const struct rte_flow_attr q_attr = {
4001                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
4002                         .ingress = 1,
4003                 };
4004                 /* Internal PMD action to set register. */
4005                 struct mlx5_rte_flow_item_tag q_tag_spec = {
4006                         .data = qrss_id,
4007                         .id = 0,
4008                 };
4009                 struct rte_flow_item q_items[] = {
4010                         {
4011                                 .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
4012                                 .spec = &q_tag_spec,
4013                                 .last = NULL,
4014                                 .mask = NULL,
4015                         },
4016                         {
4017                                 .type = RTE_FLOW_ITEM_TYPE_END,
4018                         },
4019                 };
4020                 struct rte_flow_action q_actions[] = {
4021                         {
4022                                 .type = qrss->type,
4023                                 .conf = qrss->conf,
4024                         },
4025                         {
4026                                 .type = RTE_FLOW_ACTION_TYPE_END,
4027                         },
4028                 };
4029                 uint64_t layers = flow_get_prefix_layer_flags(dev_flow);
4030
4031                 /*
4032                  * Configure the tag item only if there is no meter subflow.
4033                  * Since tag is already marked in the meter suffix subflow
4034                  * we can just use the meter suffix items as is.
4035                  */
4036                 if (qrss_id) {
4037                         /* Not meter subflow. */
4038                         MLX5_ASSERT(!mtr_sfx);
4039                         /*
4040                          * Put unique id in prefix flow due to it is destroyed
4041                          * after suffix flow and id will be freed after there
4042                          * is no actual flows with this id and identifier
4043                          * reallocation becomes possible (for example, for
4044                          * other flows in other threads).
4045                          */
4046                         dev_flow->handle->split_flow_id = qrss_id;
4047                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
4048                                                    error);
4049                         if (ret < 0)
4050                                 goto exit;
4051                         q_tag_spec.id = ret;
4052                 }
4053                 dev_flow = NULL;
4054                 /* Add suffix subflow to execute Q/RSS. */
4055                 ret = flow_create_split_inner(dev, flow, &dev_flow, layers,
4056                                               &q_attr, mtr_sfx ? items :
4057                                               q_items, q_actions,
4058                                               external, error);
4059                 if (ret < 0)
4060                         goto exit;
4061                 /* qrss ID should be freed if failed. */
4062                 qrss_id = 0;
4063                 MLX5_ASSERT(dev_flow);
4064         }
4065
4066 exit:
4067         /*
4068          * We do not destroy the partially created sub_flows in case of error.
4069          * These ones are included into parent flow list and will be destroyed
4070          * by flow_drv_destroy.
4071          */
4072         flow_qrss_free_id(dev, qrss_id);
4073         rte_free(ext_actions);
4074         return ret;
4075 }
4076
4077 /**
4078  * The splitting for meter feature.
4079  *
4080  * - The meter flow will be split to two flows as prefix and
4081  *   suffix flow. The packets make sense only it pass the prefix
4082  *   meter action.
4083  *
4084  * - Reg_C_5 is used for the packet to match betweend prefix and
4085  *   suffix flow.
4086  *
4087  * @param dev
4088  *   Pointer to Ethernet device.
4089  * @param[in] flow
4090  *   Parent flow structure pointer.
4091  * @param[in] attr
4092  *   Flow rule attributes.
4093  * @param[in] items
4094  *   Pattern specification (list terminated by the END pattern item).
4095  * @param[in] actions
4096  *   Associated actions (list terminated by the END action).
4097  * @param[in] external
4098  *   This flow rule is created by request external to PMD.
4099  * @param[out] error
4100  *   Perform verbose error reporting if not NULL.
4101  * @return
4102  *   0 on success, negative value otherwise
4103  */
4104 static int
4105 flow_create_split_meter(struct rte_eth_dev *dev,
4106                            struct rte_flow *flow,
4107                            const struct rte_flow_attr *attr,
4108                            const struct rte_flow_item items[],
4109                            const struct rte_flow_action actions[],
4110                            bool external, struct rte_flow_error *error)
4111 {
4112         struct mlx5_priv *priv = dev->data->dev_private;
4113         struct rte_flow_action *sfx_actions = NULL;
4114         struct rte_flow_action *pre_actions = NULL;
4115         struct rte_flow_item *sfx_items = NULL;
4116         struct mlx5_flow *dev_flow = NULL;
4117         struct rte_flow_attr sfx_attr = *attr;
4118         uint32_t mtr = 0;
4119         uint32_t mtr_tag_id = 0;
4120         size_t act_size;
4121         size_t item_size;
4122         int actions_n = 0;
4123         int ret;
4124
4125         if (priv->mtr_en)
4126                 actions_n = flow_check_meter_action(actions, &mtr);
4127         if (mtr) {
4128                 /* The five prefix actions: meter, decap, encap, tag, end. */
4129                 act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
4130                            sizeof(struct mlx5_rte_flow_action_set_tag);
4131                 /* tag, vlan, port id, end. */
4132 #define METER_SUFFIX_ITEM 4
4133                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
4134                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
4135                 sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
4136                 if (!sfx_actions)
4137                         return rte_flow_error_set(error, ENOMEM,
4138                                                   RTE_FLOW_ERROR_TYPE_ACTION,
4139                                                   NULL, "no memory to split "
4140                                                   "meter flow");
4141                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
4142                              act_size);
4143                 pre_actions = sfx_actions + actions_n;
4144                 mtr_tag_id = flow_meter_split_prep(dev, items, sfx_items,
4145                                                    actions, sfx_actions,
4146                                                    pre_actions);
4147                 if (!mtr_tag_id) {
4148                         ret = -rte_errno;
4149                         goto exit;
4150                 }
4151                 /* Add the prefix subflow. */
4152                 ret = flow_create_split_inner(dev, flow, &dev_flow, 0, attr,
4153                                               items, pre_actions, external,
4154                                               error);
4155                 if (ret) {
4156                         ret = -rte_errno;
4157                         goto exit;
4158                 }
4159                 dev_flow->handle->split_flow_id = mtr_tag_id;
4160                 /* Setting the sfx group atrr. */
4161                 sfx_attr.group = sfx_attr.transfer ?
4162                                 (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
4163                                  MLX5_FLOW_TABLE_LEVEL_SUFFIX;
4164         }
4165         /* Add the prefix subflow. */
4166         ret = flow_create_split_metadata(dev, flow, dev_flow ?
4167                                          flow_get_prefix_layer_flags(dev_flow) :
4168                                          0, &sfx_attr,
4169                                          sfx_items ? sfx_items : items,
4170                                          sfx_actions ? sfx_actions : actions,
4171                                          external, error);
4172 exit:
4173         if (sfx_actions)
4174                 rte_free(sfx_actions);
4175         return ret;
4176 }
4177
4178 /**
4179  * Split the flow to subflow set. The splitters might be linked
4180  * in the chain, like this:
4181  * flow_create_split_outer() calls:
4182  *   flow_create_split_meter() calls:
4183  *     flow_create_split_metadata(meter_subflow_0) calls:
4184  *       flow_create_split_inner(metadata_subflow_0)
4185  *       flow_create_split_inner(metadata_subflow_1)
4186  *       flow_create_split_inner(metadata_subflow_2)
4187  *     flow_create_split_metadata(meter_subflow_1) calls:
4188  *       flow_create_split_inner(metadata_subflow_0)
4189  *       flow_create_split_inner(metadata_subflow_1)
4190  *       flow_create_split_inner(metadata_subflow_2)
4191  *
4192  * This provide flexible way to add new levels of flow splitting.
4193  * The all of successfully created subflows are included to the
4194  * parent flow dev_flow list.
4195  *
4196  * @param dev
4197  *   Pointer to Ethernet device.
4198  * @param[in] flow
4199  *   Parent flow structure pointer.
4200  * @param[in] attr
4201  *   Flow rule attributes.
4202  * @param[in] items
4203  *   Pattern specification (list terminated by the END pattern item).
4204  * @param[in] actions
4205  *   Associated actions (list terminated by the END action).
4206  * @param[in] external
4207  *   This flow rule is created by request external to PMD.
4208  * @param[out] error
4209  *   Perform verbose error reporting if not NULL.
4210  * @return
4211  *   0 on success, negative value otherwise
4212  */
4213 static int
4214 flow_create_split_outer(struct rte_eth_dev *dev,
4215                         struct rte_flow *flow,
4216                         const struct rte_flow_attr *attr,
4217                         const struct rte_flow_item items[],
4218                         const struct rte_flow_action actions[],
4219                         bool external, struct rte_flow_error *error)
4220 {
4221         int ret;
4222
4223         ret = flow_create_split_meter(dev, flow, attr, items,
4224                                          actions, external, error);
4225         MLX5_ASSERT(ret <= 0);
4226         return ret;
4227 }
4228
4229 /**
4230  * Create a flow and add it to @p list.
4231  *
4232  * @param dev
4233  *   Pointer to Ethernet device.
4234  * @param list
4235  *   Pointer to a TAILQ flow list. If this parameter NULL,
4236  *   no list insertion occurred, flow is just created,
4237  *   this is caller's responsibility to track the
4238  *   created flow.
4239  * @param[in] attr
4240  *   Flow rule attributes.
4241  * @param[in] items
4242  *   Pattern specification (list terminated by the END pattern item).
4243  * @param[in] actions
4244  *   Associated actions (list terminated by the END action).
4245  * @param[in] external
4246  *   This flow rule is created by request external to PMD.
4247  * @param[out] error
4248  *   Perform verbose error reporting if not NULL.
4249  *
4250  * @return
4251  *   A flow index on success, 0 otherwise and rte_errno is set.
4252  */
4253 static uint32_t
4254 flow_list_create(struct rte_eth_dev *dev, uint32_t *list,
4255                  const struct rte_flow_attr *attr,
4256                  const struct rte_flow_item items[],
4257                  const struct rte_flow_action actions[],
4258                  bool external, struct rte_flow_error *error)
4259 {
4260         struct mlx5_priv *priv = dev->data->dev_private;
4261         struct rte_flow *flow = NULL;
4262         struct mlx5_flow *dev_flow;
4263         const struct rte_flow_action_rss *rss;
4264         union {
4265                 struct rte_flow_expand_rss buf;
4266                 uint8_t buffer[2048];
4267         } expand_buffer;
4268         union {
4269                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4270                 uint8_t buffer[2048];
4271         } actions_rx;
4272         union {
4273                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4274                 uint8_t buffer[2048];
4275         } actions_hairpin_tx;
4276         union {
4277                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
4278                 uint8_t buffer[2048];
4279         } items_tx;
4280         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
4281         struct mlx5_flow_rss_desc *rss_desc = &((struct mlx5_flow_rss_desc *)
4282                                               priv->rss_desc)[!!priv->flow_idx];
4283         const struct rte_flow_action *p_actions_rx = actions;
4284         uint32_t i;
4285         uint32_t idx = 0;
4286         int hairpin_flow;
4287         uint32_t hairpin_id = 0;
4288         struct rte_flow_attr attr_tx = { .priority = 0 };
4289         int ret;
4290
4291         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4292         ret = flow_drv_validate(dev, attr, items, p_actions_rx,
4293                                 external, hairpin_flow, error);
4294         if (ret < 0)
4295                 return 0;
4296         if (hairpin_flow > 0) {
4297                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
4298                         rte_errno = EINVAL;
4299                         return 0;
4300                 }
4301                 flow_hairpin_split(dev, actions, actions_rx.actions,
4302                                    actions_hairpin_tx.actions, items_tx.items,
4303                                    &hairpin_id);
4304                 p_actions_rx = actions_rx.actions;
4305         }
4306         flow = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], &idx);
4307         if (!flow) {
4308                 rte_errno = ENOMEM;
4309                 goto error_before_flow;
4310         }
4311         flow->drv_type = flow_get_drv_type(dev, attr);
4312         if (hairpin_id != 0)
4313                 flow->hairpin_flow_id = hairpin_id;
4314         MLX5_ASSERT(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
4315                     flow->drv_type < MLX5_FLOW_TYPE_MAX);
4316         memset(rss_desc, 0, sizeof(*rss_desc));
4317         rss = flow_get_rss_action(p_actions_rx);
4318         if (rss) {
4319                 /*
4320                  * The following information is required by
4321                  * mlx5_flow_hashfields_adjust() in advance.
4322                  */
4323                 rss_desc->level = rss->level;
4324                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
4325                 rss_desc->types = !rss->types ? ETH_RSS_IP : rss->types;
4326         }
4327         flow->dev_handles = 0;
4328         if (rss && rss->types) {
4329                 unsigned int graph_root;
4330
4331                 graph_root = find_graph_root(items, rss->level);
4332                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
4333                                           items, rss->types,
4334                                           mlx5_support_expansion,
4335                                           graph_root);
4336                 MLX5_ASSERT(ret > 0 &&
4337                        (unsigned int)ret < sizeof(expand_buffer.buffer));
4338         } else {
4339                 buf->entries = 1;
4340                 buf->entry[0].pattern = (void *)(uintptr_t)items;
4341         }
4342         /*
4343          * Record the start index when there is a nested call. All sub-flows
4344          * need to be translated before another calling.
4345          * No need to use ping-pong buffer to save memory here.
4346          */
4347         if (priv->flow_idx) {
4348                 MLX5_ASSERT(!priv->flow_nested_idx);
4349                 priv->flow_nested_idx = priv->flow_idx;
4350         }
4351         for (i = 0; i < buf->entries; ++i) {
4352                 /*
4353                  * The splitter may create multiple dev_flows,
4354                  * depending on configuration. In the simplest
4355                  * case it just creates unmodified original flow.
4356                  */
4357                 ret = flow_create_split_outer(dev, flow, attr,
4358                                               buf->entry[i].pattern,
4359                                               p_actions_rx, external,
4360                                               error);
4361                 if (ret < 0)
4362                         goto error;
4363         }
4364         /* Create the tx flow. */
4365         if (hairpin_flow) {
4366                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
4367                 attr_tx.ingress = 0;
4368                 attr_tx.egress = 1;
4369                 dev_flow = flow_drv_prepare(dev, flow, &attr_tx, items_tx.items,
4370                                             actions_hairpin_tx.actions, error);
4371                 if (!dev_flow)
4372                         goto error;
4373                 dev_flow->flow = flow;
4374                 dev_flow->external = 0;
4375                 SILIST_INSERT(&flow->dev_handles, dev_flow->handle_idx,
4376                               dev_flow->handle, next);
4377                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
4378                                          items_tx.items,
4379                                          actions_hairpin_tx.actions, error);
4380                 if (ret < 0)
4381                         goto error;
4382         }
4383         /*
4384          * Update the metadata register copy table. If extensive
4385          * metadata feature is enabled and registers are supported
4386          * we might create the extra rte_flow for each unique
4387          * MARK/FLAG action ID.
4388          *
4389          * The table is updated for ingress Flows only, because
4390          * the egress Flows belong to the different device and
4391          * copy table should be updated in peer NIC Rx domain.
4392          */
4393         if (attr->ingress &&
4394             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
4395                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
4396                 if (ret)
4397                         goto error;
4398         }
4399         /*
4400          * If the flow is external (from application) OR device is started, then
4401          * the flow will be applied immediately.
4402          */
4403         if (external || dev->data->dev_started) {
4404                 ret = flow_drv_apply(dev, flow, error);
4405                 if (ret < 0)
4406                         goto error;
4407         }
4408         if (list)
4409                 ILIST_INSERT(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], list, idx,
4410                              flow, next);
4411         flow_rxq_flags_set(dev, flow);
4412         /* Nested flow creation index recovery. */
4413         priv->flow_idx = priv->flow_nested_idx;
4414         if (priv->flow_nested_idx)
4415                 priv->flow_nested_idx = 0;
4416         return idx;
4417 error:
4418         MLX5_ASSERT(flow);
4419         ret = rte_errno; /* Save rte_errno before cleanup. */
4420         flow_mreg_del_copy_action(dev, flow);
4421         flow_drv_destroy(dev, flow);
4422         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], idx);
4423         rte_errno = ret; /* Restore rte_errno. */
4424 error_before_flow:
4425         ret = rte_errno;
4426         if (hairpin_id)
4427                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4428                                      hairpin_id);
4429         rte_errno = ret;
4430         priv->flow_idx = priv->flow_nested_idx;
4431         if (priv->flow_nested_idx)
4432                 priv->flow_nested_idx = 0;
4433         return 0;
4434 }
4435
4436 /**
4437  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
4438  * incoming packets to table 1.
4439  *
4440  * Other flow rules, requested for group n, will be created in
4441  * e-switch table n+1.
4442  * Jump action to e-switch group n will be created to group n+1.
4443  *
4444  * Used when working in switchdev mode, to utilise advantages of table 1
4445  * and above.
4446  *
4447  * @param dev
4448  *   Pointer to Ethernet device.
4449  *
4450  * @return
4451  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
4452  */
4453 struct rte_flow *
4454 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
4455 {
4456         const struct rte_flow_attr attr = {
4457                 .group = 0,
4458                 .priority = 0,
4459                 .ingress = 1,
4460                 .egress = 0,
4461                 .transfer = 1,
4462         };
4463         const struct rte_flow_item pattern = {
4464                 .type = RTE_FLOW_ITEM_TYPE_END,
4465         };
4466         struct rte_flow_action_jump jump = {
4467                 .group = 1,
4468         };
4469         const struct rte_flow_action actions[] = {
4470                 {
4471                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4472                         .conf = &jump,
4473                 },
4474                 {
4475                         .type = RTE_FLOW_ACTION_TYPE_END,
4476                 },
4477         };
4478         struct mlx5_priv *priv = dev->data->dev_private;
4479         struct rte_flow_error error;
4480
4481         return (void *)(uintptr_t)flow_list_create(dev, &priv->ctrl_flows,
4482                                                    &attr, &pattern,
4483                                                    actions, false, &error);
4484 }
4485
4486 /**
4487  * Validate a flow supported by the NIC.
4488  *
4489  * @see rte_flow_validate()
4490  * @see rte_flow_ops
4491  */
4492 int
4493 mlx5_flow_validate(struct rte_eth_dev *dev,
4494                    const struct rte_flow_attr *attr,
4495                    const struct rte_flow_item items[],
4496                    const struct rte_flow_action actions[],
4497                    struct rte_flow_error *error)
4498 {
4499         int hairpin_flow;
4500
4501         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4502         return flow_drv_validate(dev, attr, items, actions,
4503                                 true, hairpin_flow, error);
4504 }
4505
4506 /**
4507  * Create a flow.
4508  *
4509  * @see rte_flow_create()
4510  * @see rte_flow_ops
4511  */
4512 struct rte_flow *
4513 mlx5_flow_create(struct rte_eth_dev *dev,
4514                  const struct rte_flow_attr *attr,
4515                  const struct rte_flow_item items[],
4516                  const struct rte_flow_action actions[],
4517                  struct rte_flow_error *error)
4518 {
4519         struct mlx5_priv *priv = dev->data->dev_private;
4520
4521         /*
4522          * If the device is not started yet, it is not allowed to created a
4523          * flow from application. PMD default flows and traffic control flows
4524          * are not affected.
4525          */
4526         if (unlikely(!dev->data->dev_started)) {
4527                 DRV_LOG(DEBUG, "port %u is not started when "
4528                         "inserting a flow", dev->data->port_id);
4529                 rte_flow_error_set(error, ENODEV,
4530                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4531                                    NULL,
4532                                    "port not started");
4533                 return NULL;
4534         }
4535         return (void *)(uintptr_t)flow_list_create(dev, &priv->flows,
4536                                   attr, items, actions, true, error);
4537 }
4538
4539 /**
4540  * Destroy a flow in a list.
4541  *
4542  * @param dev
4543  *   Pointer to Ethernet device.
4544  * @param list
4545  *   Pointer to the Indexed flow list. If this parameter NULL,
4546  *   there is no flow removal from the list. Be noted that as
4547  *   flow is add to the indexed list, memory of the indexed
4548  *   list points to maybe changed as flow destroyed.
4549  * @param[in] flow_idx
4550  *   Index of flow to destroy.
4551  */
4552 static void
4553 flow_list_destroy(struct rte_eth_dev *dev, uint32_t *list,
4554                   uint32_t flow_idx)
4555 {
4556         struct mlx5_priv *priv = dev->data->dev_private;
4557         struct mlx5_fdir_flow *priv_fdir_flow = NULL;
4558         struct rte_flow *flow = mlx5_ipool_get(priv->sh->ipool
4559                                                [MLX5_IPOOL_RTE_FLOW], flow_idx);
4560
4561         if (!flow)
4562                 return;
4563         /*
4564          * Update RX queue flags only if port is started, otherwise it is
4565          * already clean.
4566          */
4567         if (dev->data->dev_started)
4568                 flow_rxq_flags_trim(dev, flow);
4569         if (flow->hairpin_flow_id)
4570                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4571                                      flow->hairpin_flow_id);
4572         flow_drv_destroy(dev, flow);
4573         if (list)
4574                 ILIST_REMOVE(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], list,
4575                              flow_idx, flow, next);
4576         flow_mreg_del_copy_action(dev, flow);
4577         if (flow->fdir) {
4578                 LIST_FOREACH(priv_fdir_flow, &priv->fdir_flows, next) {
4579                         if (priv_fdir_flow->rix_flow == flow_idx)
4580                                 break;
4581                 }
4582                 if (priv_fdir_flow) {
4583                         LIST_REMOVE(priv_fdir_flow, next);
4584                         rte_free(priv_fdir_flow->fdir);
4585                         rte_free(priv_fdir_flow);
4586                 }
4587         }
4588         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], flow_idx);
4589 }
4590
4591 /**
4592  * Destroy all flows.
4593  *
4594  * @param dev
4595  *   Pointer to Ethernet device.
4596  * @param list
4597  *   Pointer to the Indexed flow list.
4598  * @param active
4599  *   If flushing is called avtively.
4600  */
4601 void
4602 mlx5_flow_list_flush(struct rte_eth_dev *dev, uint32_t *list, bool active)
4603 {
4604         uint32_t num_flushed = 0;
4605
4606         while (*list) {
4607                 flow_list_destroy(dev, list, *list);
4608                 num_flushed++;
4609         }
4610         if (active) {
4611                 DRV_LOG(INFO, "port %u: %u flows flushed before stopping",
4612                         dev->data->port_id, num_flushed);
4613         }
4614 }
4615
4616 /**
4617  * Remove all flows.
4618  *
4619  * @param dev
4620  *   Pointer to Ethernet device.
4621  * @param list
4622  *   Pointer to the Indexed flow list.
4623  */
4624 void
4625 mlx5_flow_stop(struct rte_eth_dev *dev, uint32_t *list)
4626 {
4627         struct mlx5_priv *priv = dev->data->dev_private;
4628         struct rte_flow *flow = NULL;
4629         uint32_t idx;
4630
4631         ILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], *list, idx,
4632                       flow, next) {
4633                 flow_drv_remove(dev, flow);
4634                 flow_mreg_stop_copy_action(dev, flow);
4635         }
4636         flow_mreg_del_default_copy_action(dev);
4637         flow_rxq_flags_clear(dev);
4638 }
4639
4640 /**
4641  * Add all flows.
4642  *
4643  * @param dev
4644  *   Pointer to Ethernet device.
4645  * @param list
4646  *   Pointer to the Indexed flow list.
4647  *
4648  * @return
4649  *   0 on success, a negative errno value otherwise and rte_errno is set.
4650  */
4651 int
4652 mlx5_flow_start(struct rte_eth_dev *dev, uint32_t *list)
4653 {
4654         struct mlx5_priv *priv = dev->data->dev_private;
4655         struct rte_flow *flow = NULL;
4656         struct rte_flow_error error;
4657         uint32_t idx;
4658         int ret = 0;
4659
4660         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4661         ret = flow_mreg_add_default_copy_action(dev, &error);
4662         if (ret < 0)
4663                 return -rte_errno;
4664         /* Apply Flows created by application. */
4665         ILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], *list, idx,
4666                       flow, next) {
4667                 ret = flow_mreg_start_copy_action(dev, flow);
4668                 if (ret < 0)
4669                         goto error;
4670                 ret = flow_drv_apply(dev, flow, &error);
4671                 if (ret < 0)
4672                         goto error;
4673                 flow_rxq_flags_set(dev, flow);
4674         }
4675         return 0;
4676 error:
4677         ret = rte_errno; /* Save rte_errno before cleanup. */
4678         mlx5_flow_stop(dev, list);
4679         rte_errno = ret; /* Restore rte_errno. */
4680         return -rte_errno;
4681 }
4682
4683 /**
4684  * Stop all default actions for flows.
4685  *
4686  * @param dev
4687  *   Pointer to Ethernet device.
4688  */
4689 void
4690 mlx5_flow_stop_default(struct rte_eth_dev *dev)
4691 {
4692         flow_mreg_del_default_copy_action(dev);
4693         flow_rxq_flags_clear(dev);
4694 }
4695
4696 /**
4697  * Start all default actions for flows.
4698  *
4699  * @param dev
4700  *   Pointer to Ethernet device.
4701  * @return
4702  *   0 on success, a negative errno value otherwise and rte_errno is set.
4703  */
4704 int
4705 mlx5_flow_start_default(struct rte_eth_dev *dev)
4706 {
4707         struct rte_flow_error error;
4708
4709         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4710         return flow_mreg_add_default_copy_action(dev, &error);
4711 }
4712
4713 /**
4714  * Allocate intermediate resources for flow creation.
4715  *
4716  * @param dev
4717  *   Pointer to Ethernet device.
4718  */
4719 void
4720 mlx5_flow_alloc_intermediate(struct rte_eth_dev *dev)
4721 {
4722         struct mlx5_priv *priv = dev->data->dev_private;
4723
4724         if (!priv->inter_flows) {
4725                 priv->inter_flows = rte_calloc(__func__, 1,
4726                                     MLX5_NUM_MAX_DEV_FLOWS *
4727                                     sizeof(struct mlx5_flow) +
4728                                     (sizeof(struct mlx5_flow_rss_desc) +
4729                                     sizeof(uint16_t) * UINT16_MAX) * 2, 0);
4730                 if (!priv->inter_flows) {
4731                         DRV_LOG(ERR, "can't allocate intermediate memory.");
4732                         return;
4733                 }
4734         }
4735         priv->rss_desc = &((struct mlx5_flow *)priv->inter_flows)
4736                          [MLX5_NUM_MAX_DEV_FLOWS];
4737         /* Reset the index. */
4738         priv->flow_idx = 0;
4739         priv->flow_nested_idx = 0;
4740 }
4741
4742 /**
4743  * Free intermediate resources for flows.
4744  *
4745  * @param dev
4746  *   Pointer to Ethernet device.
4747  */
4748 void
4749 mlx5_flow_free_intermediate(struct rte_eth_dev *dev)
4750 {
4751         struct mlx5_priv *priv = dev->data->dev_private;
4752
4753         rte_free(priv->inter_flows);
4754         priv->inter_flows = NULL;
4755 }
4756
4757 /**
4758  * Verify the flow list is empty
4759  *
4760  * @param dev
4761  *  Pointer to Ethernet device.
4762  *
4763  * @return the number of flows not released.
4764  */
4765 int
4766 mlx5_flow_verify(struct rte_eth_dev *dev)
4767 {
4768         struct mlx5_priv *priv = dev->data->dev_private;
4769         struct rte_flow *flow;
4770         uint32_t idx;
4771         int ret = 0;
4772
4773         ILIST_FOREACH(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], priv->flows, idx,
4774                       flow, next) {
4775                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
4776                         dev->data->port_id, (void *)flow);
4777                 ++ret;
4778         }
4779         return ret;
4780 }
4781
4782 /**
4783  * Enable default hairpin egress flow.
4784  *
4785  * @param dev
4786  *   Pointer to Ethernet device.
4787  * @param queue
4788  *   The queue index.
4789  *
4790  * @return
4791  *   0 on success, a negative errno value otherwise and rte_errno is set.
4792  */
4793 int
4794 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
4795                             uint32_t queue)
4796 {
4797         struct mlx5_priv *priv = dev->data->dev_private;
4798         const struct rte_flow_attr attr = {
4799                 .egress = 1,
4800                 .priority = 0,
4801         };
4802         struct mlx5_rte_flow_item_tx_queue queue_spec = {
4803                 .queue = queue,
4804         };
4805         struct mlx5_rte_flow_item_tx_queue queue_mask = {
4806                 .queue = UINT32_MAX,
4807         };
4808         struct rte_flow_item items[] = {
4809                 {
4810                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
4811                         .spec = &queue_spec,
4812                         .last = NULL,
4813                         .mask = &queue_mask,
4814                 },
4815                 {
4816                         .type = RTE_FLOW_ITEM_TYPE_END,
4817                 },
4818         };
4819         struct rte_flow_action_jump jump = {
4820                 .group = MLX5_HAIRPIN_TX_TABLE,
4821         };
4822         struct rte_flow_action actions[2];
4823         uint32_t flow_idx;
4824         struct rte_flow_error error;
4825
4826         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
4827         actions[0].conf = &jump;
4828         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
4829         flow_idx = flow_list_create(dev, &priv->ctrl_flows,
4830                                 &attr, items, actions, false, &error);
4831         if (!flow_idx) {
4832                 DRV_LOG(DEBUG,
4833                         "Failed to create ctrl flow: rte_errno(%d),"
4834                         " type(%d), message(%s)",
4835                         rte_errno, error.type,
4836                         error.message ? error.message : " (no stated reason)");
4837                 return -rte_errno;
4838         }
4839         return 0;
4840 }
4841
4842 /**
4843  * Enable a control flow configured from the control plane.
4844  *
4845  * @param dev
4846  *   Pointer to Ethernet device.
4847  * @param eth_spec
4848  *   An Ethernet flow spec to apply.
4849  * @param eth_mask
4850  *   An Ethernet flow mask to apply.
4851  * @param vlan_spec
4852  *   A VLAN flow spec to apply.
4853  * @param vlan_mask
4854  *   A VLAN flow mask to apply.
4855  *
4856  * @return
4857  *   0 on success, a negative errno value otherwise and rte_errno is set.
4858  */
4859 int
4860 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
4861                     struct rte_flow_item_eth *eth_spec,
4862                     struct rte_flow_item_eth *eth_mask,
4863                     struct rte_flow_item_vlan *vlan_spec,
4864                     struct rte_flow_item_vlan *vlan_mask)
4865 {
4866         struct mlx5_priv *priv = dev->data->dev_private;
4867         const struct rte_flow_attr attr = {
4868                 .ingress = 1,
4869                 .priority = MLX5_FLOW_PRIO_RSVD,
4870         };
4871         struct rte_flow_item items[] = {
4872                 {
4873                         .type = RTE_FLOW_ITEM_TYPE_ETH,
4874                         .spec = eth_spec,
4875                         .last = NULL,
4876                         .mask = eth_mask,
4877                 },
4878                 {
4879                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
4880                                               RTE_FLOW_ITEM_TYPE_END,
4881                         .spec = vlan_spec,
4882                         .last = NULL,
4883                         .mask = vlan_mask,
4884                 },
4885                 {
4886                         .type = RTE_FLOW_ITEM_TYPE_END,
4887                 },
4888         };
4889         uint16_t queue[priv->reta_idx_n];
4890         struct rte_flow_action_rss action_rss = {
4891                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
4892                 .level = 0,
4893                 .types = priv->rss_conf.rss_hf,
4894                 .key_len = priv->rss_conf.rss_key_len,
4895                 .queue_num = priv->reta_idx_n,
4896                 .key = priv->rss_conf.rss_key,
4897                 .queue = queue,
4898         };
4899         struct rte_flow_action actions[] = {
4900                 {
4901                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4902                         .conf = &action_rss,
4903                 },
4904                 {
4905                         .type = RTE_FLOW_ACTION_TYPE_END,
4906                 },
4907         };
4908         uint32_t flow_idx;
4909         struct rte_flow_error error;
4910         unsigned int i;
4911
4912         if (!priv->reta_idx_n || !priv->rxqs_n) {
4913                 return 0;
4914         }
4915         if (!(dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG))
4916                 action_rss.types = 0;
4917         for (i = 0; i != priv->reta_idx_n; ++i)
4918                 queue[i] = (*priv->reta_idx)[i];
4919         flow_idx = flow_list_create(dev, &priv->ctrl_flows,
4920                                 &attr, items, actions, false, &error);
4921         if (!flow_idx)
4922                 return -rte_errno;
4923         return 0;
4924 }
4925
4926 /**
4927  * Enable a flow control configured from the control plane.
4928  *
4929  * @param dev
4930  *   Pointer to Ethernet device.
4931  * @param eth_spec
4932  *   An Ethernet flow spec to apply.
4933  * @param eth_mask
4934  *   An Ethernet flow mask to apply.
4935  *
4936  * @return
4937  *   0 on success, a negative errno value otherwise and rte_errno is set.
4938  */
4939 int
4940 mlx5_ctrl_flow(struct rte_eth_dev *dev,
4941                struct rte_flow_item_eth *eth_spec,
4942                struct rte_flow_item_eth *eth_mask)
4943 {
4944         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
4945 }
4946
4947 /**
4948  * Destroy a flow.
4949  *
4950  * @see rte_flow_destroy()
4951  * @see rte_flow_ops
4952  */
4953 int
4954 mlx5_flow_destroy(struct rte_eth_dev *dev,
4955                   struct rte_flow *flow,
4956                   struct rte_flow_error *error __rte_unused)
4957 {
4958         struct mlx5_priv *priv = dev->data->dev_private;
4959
4960         flow_list_destroy(dev, &priv->flows, (uintptr_t)(void *)flow);
4961         return 0;
4962 }
4963
4964 /**
4965  * Destroy all flows.
4966  *
4967  * @see rte_flow_flush()
4968  * @see rte_flow_ops
4969  */
4970 int
4971 mlx5_flow_flush(struct rte_eth_dev *dev,
4972                 struct rte_flow_error *error __rte_unused)
4973 {
4974         struct mlx5_priv *priv = dev->data->dev_private;
4975
4976         mlx5_flow_list_flush(dev, &priv->flows, false);
4977         return 0;
4978 }
4979
4980 /**
4981  * Isolated mode.
4982  *
4983  * @see rte_flow_isolate()
4984  * @see rte_flow_ops
4985  */
4986 int
4987 mlx5_flow_isolate(struct rte_eth_dev *dev,
4988                   int enable,
4989                   struct rte_flow_error *error)
4990 {
4991         struct mlx5_priv *priv = dev->data->dev_private;
4992
4993         if (dev->data->dev_started) {
4994                 rte_flow_error_set(error, EBUSY,
4995                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4996                                    NULL,
4997                                    "port must be stopped first");
4998                 return -rte_errno;
4999         }
5000         priv->isolated = !!enable;
5001         if (enable)
5002                 dev->dev_ops = &mlx5_dev_ops_isolate;
5003         else
5004                 dev->dev_ops = &mlx5_dev_ops;
5005         return 0;
5006 }
5007
5008 /**
5009  * Query a flow.
5010  *
5011  * @see rte_flow_query()
5012  * @see rte_flow_ops
5013  */
5014 static int
5015 flow_drv_query(struct rte_eth_dev *dev,
5016                uint32_t flow_idx,
5017                const struct rte_flow_action *actions,
5018                void *data,
5019                struct rte_flow_error *error)
5020 {
5021         struct mlx5_priv *priv = dev->data->dev_private;
5022         const struct mlx5_flow_driver_ops *fops;
5023         struct rte_flow *flow = mlx5_ipool_get(priv->sh->ipool
5024                                                [MLX5_IPOOL_RTE_FLOW],
5025                                                flow_idx);
5026         enum mlx5_flow_drv_type ftype;
5027
5028         if (!flow) {
5029                 return rte_flow_error_set(error, ENOENT,
5030                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
5031                           NULL,
5032                           "invalid flow handle");
5033         }
5034         ftype = flow->drv_type;
5035         MLX5_ASSERT(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
5036         fops = flow_get_drv_ops(ftype);
5037
5038         return fops->query(dev, flow, actions, data, error);
5039 }
5040
5041 /**
5042  * Query a flow.
5043  *
5044  * @see rte_flow_query()
5045  * @see rte_flow_ops
5046  */
5047 int
5048 mlx5_flow_query(struct rte_eth_dev *dev,
5049                 struct rte_flow *flow,
5050                 const struct rte_flow_action *actions,
5051                 void *data,
5052                 struct rte_flow_error *error)
5053 {
5054         int ret;
5055
5056         ret = flow_drv_query(dev, (uintptr_t)(void *)flow, actions, data,
5057                              error);
5058         if (ret < 0)
5059                 return ret;
5060         return 0;
5061 }
5062
5063 /**
5064  * Convert a flow director filter to a generic flow.
5065  *
5066  * @param dev
5067  *   Pointer to Ethernet device.
5068  * @param fdir_filter
5069  *   Flow director filter to add.
5070  * @param attributes
5071  *   Generic flow parameters structure.
5072  *
5073  * @return
5074  *   0 on success, a negative errno value otherwise and rte_errno is set.
5075  */
5076 static int
5077 flow_fdir_filter_convert(struct rte_eth_dev *dev,
5078                          const struct rte_eth_fdir_filter *fdir_filter,
5079                          struct mlx5_fdir *attributes)
5080 {
5081         struct mlx5_priv *priv = dev->data->dev_private;
5082         const struct rte_eth_fdir_input *input = &fdir_filter->input;
5083         const struct rte_eth_fdir_masks *mask =
5084                 &dev->data->dev_conf.fdir_conf.mask;
5085
5086         /* Validate queue number. */
5087         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
5088                 DRV_LOG(ERR, "port %u invalid queue number %d",
5089                         dev->data->port_id, fdir_filter->action.rx_queue);
5090                 rte_errno = EINVAL;
5091                 return -rte_errno;
5092         }
5093         attributes->attr.ingress = 1;
5094         attributes->items[0] = (struct rte_flow_item) {
5095                 .type = RTE_FLOW_ITEM_TYPE_ETH,
5096                 .spec = &attributes->l2,
5097                 .mask = &attributes->l2_mask,
5098         };
5099         switch (fdir_filter->action.behavior) {
5100         case RTE_ETH_FDIR_ACCEPT:
5101                 attributes->actions[0] = (struct rte_flow_action){
5102                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
5103                         .conf = &attributes->queue,
5104                 };
5105                 break;
5106         case RTE_ETH_FDIR_REJECT:
5107                 attributes->actions[0] = (struct rte_flow_action){
5108                         .type = RTE_FLOW_ACTION_TYPE_DROP,
5109                 };
5110                 break;
5111         default:
5112                 DRV_LOG(ERR, "port %u invalid behavior %d",
5113                         dev->data->port_id,
5114                         fdir_filter->action.behavior);
5115                 rte_errno = ENOTSUP;
5116                 return -rte_errno;
5117         }
5118         attributes->queue.index = fdir_filter->action.rx_queue;
5119         /* Handle L3. */
5120         switch (fdir_filter->input.flow_type) {
5121         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
5122         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
5123         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
5124                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
5125                         .src_addr = input->flow.ip4_flow.src_ip,
5126                         .dst_addr = input->flow.ip4_flow.dst_ip,
5127                         .time_to_live = input->flow.ip4_flow.ttl,
5128                         .type_of_service = input->flow.ip4_flow.tos,
5129                 };
5130                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
5131                         .src_addr = mask->ipv4_mask.src_ip,
5132                         .dst_addr = mask->ipv4_mask.dst_ip,
5133                         .time_to_live = mask->ipv4_mask.ttl,
5134                         .type_of_service = mask->ipv4_mask.tos,
5135                         .next_proto_id = mask->ipv4_mask.proto,
5136                 };
5137                 attributes->items[1] = (struct rte_flow_item){
5138                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
5139                         .spec = &attributes->l3,
5140                         .mask = &attributes->l3_mask,
5141                 };
5142                 break;
5143         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
5144         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
5145         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
5146                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
5147                         .hop_limits = input->flow.ipv6_flow.hop_limits,
5148                         .proto = input->flow.ipv6_flow.proto,
5149                 };
5150
5151                 memcpy(attributes->l3.ipv6.hdr.src_addr,
5152                        input->flow.ipv6_flow.src_ip,
5153                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
5154                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
5155                        input->flow.ipv6_flow.dst_ip,
5156                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
5157                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
5158                        mask->ipv6_mask.src_ip,
5159                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
5160                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
5161                        mask->ipv6_mask.dst_ip,
5162                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
5163                 attributes->items[1] = (struct rte_flow_item){
5164                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
5165                         .spec = &attributes->l3,
5166                         .mask = &attributes->l3_mask,
5167                 };
5168                 break;
5169         default:
5170                 DRV_LOG(ERR, "port %u invalid flow type%d",
5171                         dev->data->port_id, fdir_filter->input.flow_type);
5172                 rte_errno = ENOTSUP;
5173                 return -rte_errno;
5174         }
5175         /* Handle L4. */
5176         switch (fdir_filter->input.flow_type) {
5177         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
5178                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
5179                         .src_port = input->flow.udp4_flow.src_port,
5180                         .dst_port = input->flow.udp4_flow.dst_port,
5181                 };
5182                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
5183                         .src_port = mask->src_port_mask,
5184                         .dst_port = mask->dst_port_mask,
5185                 };
5186                 attributes->items[2] = (struct rte_flow_item){
5187                         .type = RTE_FLOW_ITEM_TYPE_UDP,
5188                         .spec = &attributes->l4,
5189                         .mask = &attributes->l4_mask,
5190                 };
5191                 break;
5192         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
5193                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
5194                         .src_port = input->flow.tcp4_flow.src_port,
5195                         .dst_port = input->flow.tcp4_flow.dst_port,
5196                 };
5197                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
5198                         .src_port = mask->src_port_mask,
5199                         .dst_port = mask->dst_port_mask,
5200                 };
5201                 attributes->items[2] = (struct rte_flow_item){
5202                         .type = RTE_FLOW_ITEM_TYPE_TCP,
5203                         .spec = &attributes->l4,
5204                         .mask = &attributes->l4_mask,
5205                 };
5206                 break;
5207         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
5208                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
5209                         .src_port = input->flow.udp6_flow.src_port,
5210                         .dst_port = input->flow.udp6_flow.dst_port,
5211                 };
5212                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
5213                         .src_port = mask->src_port_mask,
5214                         .dst_port = mask->dst_port_mask,
5215                 };
5216                 attributes->items[2] = (struct rte_flow_item){
5217                         .type = RTE_FLOW_ITEM_TYPE_UDP,
5218                         .spec = &attributes->l4,
5219                         .mask = &attributes->l4_mask,
5220                 };
5221                 break;
5222         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
5223                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
5224                         .src_port = input->flow.tcp6_flow.src_port,
5225                         .dst_port = input->flow.tcp6_flow.dst_port,
5226                 };
5227                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
5228                         .src_port = mask->src_port_mask,
5229                         .dst_port = mask->dst_port_mask,
5230                 };
5231                 attributes->items[2] = (struct rte_flow_item){
5232                         .type = RTE_FLOW_ITEM_TYPE_TCP,
5233                         .spec = &attributes->l4,
5234                         .mask = &attributes->l4_mask,
5235                 };
5236                 break;
5237         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
5238         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
5239                 break;
5240         default:
5241                 DRV_LOG(ERR, "port %u invalid flow type%d",
5242                         dev->data->port_id, fdir_filter->input.flow_type);
5243                 rte_errno = ENOTSUP;
5244                 return -rte_errno;
5245         }
5246         return 0;
5247 }
5248
5249 #define FLOW_FDIR_CMP(f1, f2, fld) \
5250         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
5251
5252 /**
5253  * Compare two FDIR flows. If items and actions are identical, the two flows are
5254  * regarded as same.
5255  *
5256  * @param dev
5257  *   Pointer to Ethernet device.
5258  * @param f1
5259  *   FDIR flow to compare.
5260  * @param f2
5261  *   FDIR flow to compare.
5262  *
5263  * @return
5264  *   Zero on match, 1 otherwise.
5265  */
5266 static int
5267 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
5268 {
5269         if (FLOW_FDIR_CMP(f1, f2, attr) ||
5270             FLOW_FDIR_CMP(f1, f2, l2) ||
5271             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
5272             FLOW_FDIR_CMP(f1, f2, l3) ||
5273             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
5274             FLOW_FDIR_CMP(f1, f2, l4) ||
5275             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
5276             FLOW_FDIR_CMP(f1, f2, actions[0].type))
5277                 return 1;
5278         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
5279             FLOW_FDIR_CMP(f1, f2, queue))
5280                 return 1;
5281         return 0;
5282 }
5283
5284 /**
5285  * Search device flow list to find out a matched FDIR flow.
5286  *
5287  * @param dev
5288  *   Pointer to Ethernet device.
5289  * @param fdir_flow
5290  *   FDIR flow to lookup.
5291  *
5292  * @return
5293  *   Index of flow if found, 0 otherwise.
5294  */
5295 static uint32_t
5296 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
5297 {
5298         struct mlx5_priv *priv = dev->data->dev_private;
5299         uint32_t flow_idx = 0;
5300         struct mlx5_fdir_flow *priv_fdir_flow = NULL;
5301
5302         MLX5_ASSERT(fdir_flow);
5303         LIST_FOREACH(priv_fdir_flow, &priv->fdir_flows, next) {
5304                 if (!flow_fdir_cmp(priv_fdir_flow->fdir, fdir_flow)) {
5305                         DRV_LOG(DEBUG, "port %u found FDIR flow %u",
5306                                 dev->data->port_id, flow_idx);
5307                         flow_idx = priv_fdir_flow->rix_flow;
5308                         break;
5309                 }
5310         }
5311         return flow_idx;
5312 }
5313
5314 /**
5315  * Add new flow director filter and store it in list.
5316  *
5317  * @param dev
5318  *   Pointer to Ethernet device.
5319  * @param fdir_filter
5320  *   Flow director filter to add.
5321  *
5322  * @return
5323  *   0 on success, a negative errno value otherwise and rte_errno is set.
5324  */
5325 static int
5326 flow_fdir_filter_add(struct rte_eth_dev *dev,
5327                      const struct rte_eth_fdir_filter *fdir_filter)
5328 {
5329         struct mlx5_priv *priv = dev->data->dev_private;
5330         struct mlx5_fdir *fdir_flow;
5331         struct rte_flow *flow;
5332         struct mlx5_fdir_flow *priv_fdir_flow = NULL;
5333         uint32_t flow_idx;
5334         int ret;
5335
5336         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
5337         if (!fdir_flow) {
5338                 rte_errno = ENOMEM;
5339                 return -rte_errno;
5340         }
5341         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
5342         if (ret)
5343                 goto error;
5344         flow_idx = flow_fdir_filter_lookup(dev, fdir_flow);
5345         if (flow_idx) {
5346                 rte_errno = EEXIST;
5347                 goto error;
5348         }
5349         priv_fdir_flow = rte_zmalloc(__func__, sizeof(struct mlx5_fdir_flow),
5350                                      0);
5351         if (!priv_fdir_flow) {
5352                 rte_errno = ENOMEM;
5353                 goto error;
5354         }
5355         flow_idx = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
5356                                     fdir_flow->items, fdir_flow->actions, true,
5357                                     NULL);
5358         flow = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW], flow_idx);
5359         if (!flow)
5360                 goto error;
5361         flow->fdir = 1;
5362         priv_fdir_flow->fdir = fdir_flow;
5363         priv_fdir_flow->rix_flow = flow_idx;
5364         LIST_INSERT_HEAD(&priv->fdir_flows, priv_fdir_flow, next);
5365         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
5366                 dev->data->port_id, (void *)flow);
5367         return 0;
5368 error:
5369         rte_free(priv_fdir_flow);
5370         rte_free(fdir_flow);
5371         return -rte_errno;
5372 }
5373
5374 /**
5375  * Delete specific filter.
5376  *
5377  * @param dev
5378  *   Pointer to Ethernet device.
5379  * @param fdir_filter
5380  *   Filter to be deleted.
5381  *
5382  * @return
5383  *   0 on success, a negative errno value otherwise and rte_errno is set.
5384  */
5385 static int
5386 flow_fdir_filter_delete(struct rte_eth_dev *dev,
5387                         const struct rte_eth_fdir_filter *fdir_filter)
5388 {
5389         struct mlx5_priv *priv = dev->data->dev_private;
5390         uint32_t flow_idx;
5391         struct mlx5_fdir fdir_flow = {
5392                 .attr.group = 0,
5393         };
5394         struct mlx5_fdir_flow *priv_fdir_flow = NULL;
5395         int ret;
5396
5397         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
5398         if (ret)
5399                 return -rte_errno;
5400         LIST_FOREACH(priv_fdir_flow, &priv->fdir_flows, next) {
5401                 /* Find the fdir in priv list */
5402                 if (!flow_fdir_cmp(priv_fdir_flow->fdir, &fdir_flow))
5403                         break;
5404         }
5405         if (!priv_fdir_flow)
5406                 return 0;
5407         LIST_REMOVE(priv_fdir_flow, next);
5408         flow_idx = priv_fdir_flow->rix_flow;
5409         flow_list_destroy(dev, &priv->flows, flow_idx);
5410         rte_free(priv_fdir_flow->fdir);
5411         rte_free(priv_fdir_flow);
5412         DRV_LOG(DEBUG, "port %u deleted FDIR flow %u",
5413                 dev->data->port_id, flow_idx);
5414         return 0;
5415 }
5416
5417 /**
5418  * Update queue for specific filter.
5419  *
5420  * @param dev
5421  *   Pointer to Ethernet device.
5422  * @param fdir_filter
5423  *   Filter to be updated.
5424  *
5425  * @return
5426  *   0 on success, a negative errno value otherwise and rte_errno is set.
5427  */
5428 static int
5429 flow_fdir_filter_update(struct rte_eth_dev *dev,
5430                         const struct rte_eth_fdir_filter *fdir_filter)
5431 {
5432         int ret;
5433
5434         ret = flow_fdir_filter_delete(dev, fdir_filter);
5435         if (ret)
5436                 return ret;
5437         return flow_fdir_filter_add(dev, fdir_filter);
5438 }
5439
5440 /**
5441  * Flush all filters.
5442  *
5443  * @param dev
5444  *   Pointer to Ethernet device.
5445  */
5446 static void
5447 flow_fdir_filter_flush(struct rte_eth_dev *dev)
5448 {
5449         struct mlx5_priv *priv = dev->data->dev_private;
5450         struct mlx5_fdir_flow *priv_fdir_flow = NULL;
5451
5452         while (!LIST_EMPTY(&priv->fdir_flows)) {
5453                 priv_fdir_flow = LIST_FIRST(&priv->fdir_flows);
5454                 LIST_REMOVE(priv_fdir_flow, next);
5455                 flow_list_destroy(dev, &priv->flows, priv_fdir_flow->rix_flow);
5456                 rte_free(priv_fdir_flow->fdir);
5457                 rte_free(priv_fdir_flow);
5458         }
5459 }
5460
5461 /**
5462  * Get flow director information.
5463  *
5464  * @param dev
5465  *   Pointer to Ethernet device.
5466  * @param[out] fdir_info
5467  *   Resulting flow director information.
5468  */
5469 static void
5470 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
5471 {
5472         struct rte_eth_fdir_masks *mask =
5473                 &dev->data->dev_conf.fdir_conf.mask;
5474
5475         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
5476         fdir_info->guarant_spc = 0;
5477         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
5478         fdir_info->max_flexpayload = 0;
5479         fdir_info->flow_types_mask[0] = 0;
5480         fdir_info->flex_payload_unit = 0;
5481         fdir_info->max_flex_payload_segment_num = 0;
5482         fdir_info->flex_payload_limit = 0;
5483         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
5484 }
5485
5486 /**
5487  * Deal with flow director operations.
5488  *
5489  * @param dev
5490  *   Pointer to Ethernet device.
5491  * @param filter_op
5492  *   Operation to perform.
5493  * @param arg
5494  *   Pointer to operation-specific structure.
5495  *
5496  * @return
5497  *   0 on success, a negative errno value otherwise and rte_errno is set.
5498  */
5499 static int
5500 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
5501                     void *arg)
5502 {
5503         enum rte_fdir_mode fdir_mode =
5504                 dev->data->dev_conf.fdir_conf.mode;
5505
5506         if (filter_op == RTE_ETH_FILTER_NOP)
5507                 return 0;
5508         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
5509             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
5510                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
5511                         dev->data->port_id, fdir_mode);
5512                 rte_errno = EINVAL;
5513                 return -rte_errno;
5514         }
5515         switch (filter_op) {
5516         case RTE_ETH_FILTER_ADD:
5517                 return flow_fdir_filter_add(dev, arg);
5518         case RTE_ETH_FILTER_UPDATE:
5519                 return flow_fdir_filter_update(dev, arg);
5520         case RTE_ETH_FILTER_DELETE:
5521                 return flow_fdir_filter_delete(dev, arg);
5522         case RTE_ETH_FILTER_FLUSH:
5523                 flow_fdir_filter_flush(dev);
5524                 break;
5525         case RTE_ETH_FILTER_INFO:
5526                 flow_fdir_info_get(dev, arg);
5527                 break;
5528         default:
5529                 DRV_LOG(DEBUG, "port %u unknown operation %u",
5530                         dev->data->port_id, filter_op);
5531                 rte_errno = EINVAL;
5532                 return -rte_errno;
5533         }
5534         return 0;
5535 }
5536
5537 /**
5538  * Manage filter operations.
5539  *
5540  * @param dev
5541  *   Pointer to Ethernet device structure.
5542  * @param filter_type
5543  *   Filter type.
5544  * @param filter_op
5545  *   Operation to perform.
5546  * @param arg
5547  *   Pointer to operation-specific structure.
5548  *
5549  * @return
5550  *   0 on success, a negative errno value otherwise and rte_errno is set.
5551  */
5552 int
5553 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
5554                      enum rte_filter_type filter_type,
5555                      enum rte_filter_op filter_op,
5556                      void *arg)
5557 {
5558         switch (filter_type) {
5559         case RTE_ETH_FILTER_GENERIC:
5560                 if (filter_op != RTE_ETH_FILTER_GET) {
5561                         rte_errno = EINVAL;
5562                         return -rte_errno;
5563                 }
5564                 *(const void **)arg = &mlx5_flow_ops;
5565                 return 0;
5566         case RTE_ETH_FILTER_FDIR:
5567                 return flow_fdir_ctrl_func(dev, filter_op, arg);
5568         default:
5569                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
5570                         dev->data->port_id, filter_type);
5571                 rte_errno = ENOTSUP;
5572                 return -rte_errno;
5573         }
5574         return 0;
5575 }
5576
5577 /**
5578  * Create the needed meter and suffix tables.
5579  *
5580  * @param[in] dev
5581  *   Pointer to Ethernet device.
5582  * @param[in] fm
5583  *   Pointer to the flow meter.
5584  *
5585  * @return
5586  *   Pointer to table set on success, NULL otherwise.
5587  */
5588 struct mlx5_meter_domains_infos *
5589 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
5590                           const struct mlx5_flow_meter *fm)
5591 {
5592         const struct mlx5_flow_driver_ops *fops;
5593
5594         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5595         return fops->create_mtr_tbls(dev, fm);
5596 }
5597
5598 /**
5599  * Destroy the meter table set.
5600  *
5601  * @param[in] dev
5602  *   Pointer to Ethernet device.
5603  * @param[in] tbl
5604  *   Pointer to the meter table set.
5605  *
5606  * @return
5607  *   0 on success.
5608  */
5609 int
5610 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
5611                            struct mlx5_meter_domains_infos *tbls)
5612 {
5613         const struct mlx5_flow_driver_ops *fops;
5614
5615         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5616         return fops->destroy_mtr_tbls(dev, tbls);
5617 }
5618
5619 /**
5620  * Create policer rules.
5621  *
5622  * @param[in] dev
5623  *   Pointer to Ethernet device.
5624  * @param[in] fm
5625  *   Pointer to flow meter structure.
5626  * @param[in] attr
5627  *   Pointer to flow attributes.
5628  *
5629  * @return
5630  *   0 on success, -1 otherwise.
5631  */
5632 int
5633 mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
5634                                struct mlx5_flow_meter *fm,
5635                                const struct rte_flow_attr *attr)
5636 {
5637         const struct mlx5_flow_driver_ops *fops;
5638
5639         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5640         return fops->create_policer_rules(dev, fm, attr);
5641 }
5642
5643 /**
5644  * Destroy policer rules.
5645  *
5646  * @param[in] fm
5647  *   Pointer to flow meter structure.
5648  * @param[in] attr
5649  *   Pointer to flow attributes.
5650  *
5651  * @return
5652  *   0 on success, -1 otherwise.
5653  */
5654 int
5655 mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
5656                                 struct mlx5_flow_meter *fm,
5657                                 const struct rte_flow_attr *attr)
5658 {
5659         const struct mlx5_flow_driver_ops *fops;
5660
5661         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5662         return fops->destroy_policer_rules(dev, fm, attr);
5663 }
5664
5665 /**
5666  * Allocate a counter.
5667  *
5668  * @param[in] dev
5669  *   Pointer to Ethernet device structure.
5670  *
5671  * @return
5672  *   Index to allocated counter  on success, 0 otherwise.
5673  */
5674 uint32_t
5675 mlx5_counter_alloc(struct rte_eth_dev *dev)
5676 {
5677         const struct mlx5_flow_driver_ops *fops;
5678         struct rte_flow_attr attr = { .transfer = 0 };
5679
5680         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5681                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5682                 return fops->counter_alloc(dev);
5683         }
5684         DRV_LOG(ERR,
5685                 "port %u counter allocate is not supported.",
5686                  dev->data->port_id);
5687         return 0;
5688 }
5689
5690 /**
5691  * Free a counter.
5692  *
5693  * @param[in] dev
5694  *   Pointer to Ethernet device structure.
5695  * @param[in] cnt
5696  *   Index to counter to be free.
5697  */
5698 void
5699 mlx5_counter_free(struct rte_eth_dev *dev, uint32_t cnt)
5700 {
5701         const struct mlx5_flow_driver_ops *fops;
5702         struct rte_flow_attr attr = { .transfer = 0 };
5703
5704         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5705                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5706                 fops->counter_free(dev, cnt);
5707                 return;
5708         }
5709         DRV_LOG(ERR,
5710                 "port %u counter free is not supported.",
5711                  dev->data->port_id);
5712 }
5713
5714 /**
5715  * Query counter statistics.
5716  *
5717  * @param[in] dev
5718  *   Pointer to Ethernet device structure.
5719  * @param[in] cnt
5720  *   Index to counter to query.
5721  * @param[in] clear
5722  *   Set to clear counter statistics.
5723  * @param[out] pkts
5724  *   The counter hits packets number to save.
5725  * @param[out] bytes
5726  *   The counter hits bytes number to save.
5727  *
5728  * @return
5729  *   0 on success, a negative errno value otherwise.
5730  */
5731 int
5732 mlx5_counter_query(struct rte_eth_dev *dev, uint32_t cnt,
5733                    bool clear, uint64_t *pkts, uint64_t *bytes)
5734 {
5735         const struct mlx5_flow_driver_ops *fops;
5736         struct rte_flow_attr attr = { .transfer = 0 };
5737
5738         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5739                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5740                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
5741         }
5742         DRV_LOG(ERR,
5743                 "port %u counter query is not supported.",
5744                  dev->data->port_id);
5745         return -ENOTSUP;
5746 }
5747
5748 #define MLX5_POOL_QUERY_FREQ_US 1000000
5749
5750 /**
5751  * Set the periodic procedure for triggering asynchronous batch queries for all
5752  * the counter pools.
5753  *
5754  * @param[in] sh
5755  *   Pointer to mlx5_ibv_shared object.
5756  */
5757 void
5758 mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
5759 {
5760         struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
5761         uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
5762         uint32_t us;
5763
5764         cont = MLX5_CNT_CONTAINER(sh, 1, 0);
5765         pools_n += rte_atomic16_read(&cont->n_valid);
5766         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
5767         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
5768         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
5769                 sh->cmng.query_thread_on = 0;
5770                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
5771         } else {
5772                 sh->cmng.query_thread_on = 1;
5773         }
5774 }
5775
5776 /**
5777  * The periodic procedure for triggering asynchronous batch queries for all the
5778  * counter pools. This function is probably called by the host thread.
5779  *
5780  * @param[in] arg
5781  *   The parameter for the alarm process.
5782  */
5783 void
5784 mlx5_flow_query_alarm(void *arg)
5785 {
5786         struct mlx5_ibv_shared *sh = arg;
5787         struct mlx5_devx_obj *dcs;
5788         uint16_t offset;
5789         int ret;
5790         uint8_t batch = sh->cmng.batch;
5791         uint16_t pool_index = sh->cmng.pool_index;
5792         struct mlx5_pools_container *cont;
5793         struct mlx5_pools_container *mcont;
5794         struct mlx5_flow_counter_pool *pool;
5795
5796         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
5797                 goto set_alarm;
5798 next_container:
5799         cont = MLX5_CNT_CONTAINER(sh, batch, 1);
5800         mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
5801         /* Check if resize was done and need to flip a container. */
5802         if (cont != mcont) {
5803                 if (cont->pools) {
5804                         /* Clean the old container. */
5805                         rte_free(cont->pools);
5806                         memset(cont, 0, sizeof(*cont));
5807                 }
5808                 rte_cio_wmb();
5809                  /* Flip the host container. */
5810                 sh->cmng.mhi[batch] ^= (uint8_t)2;
5811                 cont = mcont;
5812         }
5813         if (!cont->pools) {
5814                 /* 2 empty containers case is unexpected. */
5815                 if (unlikely(batch != sh->cmng.batch))
5816                         goto set_alarm;
5817                 batch ^= 0x1;
5818                 pool_index = 0;
5819                 goto next_container;
5820         }
5821         pool = cont->pools[pool_index];
5822         if (pool->raw_hw)
5823                 /* There is a pool query in progress. */
5824                 goto set_alarm;
5825         pool->raw_hw =
5826                 LIST_FIRST(&sh->cmng.free_stat_raws);
5827         if (!pool->raw_hw)
5828                 /* No free counter statistics raw memory. */
5829                 goto set_alarm;
5830         dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
5831                                                               (&pool->a64_dcs);
5832         offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
5833         /*
5834          * Identify the counters released between query trigger and query
5835          * handle more effiecntly. The counter released in this gap period
5836          * should wait for a new round of query as the new arrived packets
5837          * will not be taken into account.
5838          */
5839         rte_atomic64_add(&pool->start_query_gen, 1);
5840         ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
5841                                                offset, NULL, NULL,
5842                                                pool->raw_hw->mem_mng->dm->id,
5843                                                (void *)(uintptr_t)
5844                                                (pool->raw_hw->data + offset),
5845                                                sh->devx_comp,
5846                                                (uint64_t)(uintptr_t)pool);
5847         if (ret) {
5848                 rte_atomic64_sub(&pool->start_query_gen, 1);
5849                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
5850                         " %d", pool->min_dcs->id);
5851                 pool->raw_hw = NULL;
5852                 goto set_alarm;
5853         }
5854         pool->raw_hw->min_dcs_id = dcs->id;
5855         LIST_REMOVE(pool->raw_hw, next);
5856         sh->cmng.pending_queries++;
5857         pool_index++;
5858         if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
5859                 batch ^= 0x1;
5860                 pool_index = 0;
5861         }
5862 set_alarm:
5863         sh->cmng.batch = batch;
5864         sh->cmng.pool_index = pool_index;
5865         mlx5_set_query_alarm(sh);
5866 }
5867
5868 /**
5869  * Handler for the HW respond about ready values from an asynchronous batch
5870  * query. This function is probably called by the host thread.
5871  *
5872  * @param[in] sh
5873  *   The pointer to the shared IB device context.
5874  * @param[in] async_id
5875  *   The Devx async ID.
5876  * @param[in] status
5877  *   The status of the completion.
5878  */
5879 void
5880 mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
5881                                   uint64_t async_id, int status)
5882 {
5883         struct mlx5_flow_counter_pool *pool =
5884                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
5885         struct mlx5_counter_stats_raw *raw_to_free;
5886
5887         if (unlikely(status)) {
5888                 rte_atomic64_sub(&pool->start_query_gen, 1);
5889                 raw_to_free = pool->raw_hw;
5890         } else {
5891                 raw_to_free = pool->raw;
5892                 rte_spinlock_lock(&pool->sl);
5893                 pool->raw = pool->raw_hw;
5894                 rte_spinlock_unlock(&pool->sl);
5895                 MLX5_ASSERT(rte_atomic64_read(&pool->end_query_gen) + 1 ==
5896                             rte_atomic64_read(&pool->start_query_gen));
5897                 rte_atomic64_set(&pool->end_query_gen,
5898                                  rte_atomic64_read(&pool->start_query_gen));
5899                 /* Be sure the new raw counters data is updated in memory. */
5900                 rte_cio_wmb();
5901         }
5902         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
5903         pool->raw_hw = NULL;
5904         sh->cmng.pending_queries--;
5905 }
5906
5907 /**
5908  * Translate the rte_flow group index to HW table value.
5909  *
5910  * @param[in] attributes
5911  *   Pointer to flow attributes
5912  * @param[in] external
5913  *   Value is part of flow rule created by request external to PMD.
5914  * @param[in] group
5915  *   rte_flow group index value.
5916  * @param[out] fdb_def_rule
5917  *   Whether fdb jump to table 1 is configured.
5918  * @param[out] table
5919  *   HW table value.
5920  * @param[out] error
5921  *   Pointer to error structure.
5922  *
5923  * @return
5924  *   0 on success, a negative errno value otherwise and rte_errno is set.
5925  */
5926 int
5927 mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
5928                          uint32_t group, bool fdb_def_rule, uint32_t *table,
5929                          struct rte_flow_error *error)
5930 {
5931         if (attributes->transfer && external && fdb_def_rule) {
5932                 if (group == UINT32_MAX)
5933                         return rte_flow_error_set
5934                                                 (error, EINVAL,
5935                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
5936                                                  NULL,
5937                                                  "group index not supported");
5938                 *table = group + 1;
5939         } else {
5940                 *table = group;
5941         }
5942         return 0;
5943 }
5944
5945 /**
5946  * Discover availability of metadata reg_c's.
5947  *
5948  * Iteratively use test flows to check availability.
5949  *
5950  * @param[in] dev
5951  *   Pointer to the Ethernet device structure.
5952  *
5953  * @return
5954  *   0 on success, a negative errno value otherwise and rte_errno is set.
5955  */
5956 int
5957 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
5958 {
5959         struct mlx5_priv *priv = dev->data->dev_private;
5960         struct mlx5_dev_config *config = &priv->config;
5961         enum modify_reg idx;
5962         int n = 0;
5963
5964         /* reg_c[0] and reg_c[1] are reserved. */
5965         config->flow_mreg_c[n++] = REG_C_0;
5966         config->flow_mreg_c[n++] = REG_C_1;
5967         /* Discover availability of other reg_c's. */
5968         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
5969                 struct rte_flow_attr attr = {
5970                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5971                         .priority = MLX5_FLOW_PRIO_RSVD,
5972                         .ingress = 1,
5973                 };
5974                 struct rte_flow_item items[] = {
5975                         [0] = {
5976                                 .type = RTE_FLOW_ITEM_TYPE_END,
5977                         },
5978                 };
5979                 struct rte_flow_action actions[] = {
5980                         [0] = {
5981                                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5982                                 .conf = &(struct mlx5_flow_action_copy_mreg){
5983                                         .src = REG_C_1,
5984                                         .dst = idx,
5985                                 },
5986                         },
5987                         [1] = {
5988                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5989                                 .conf = &(struct rte_flow_action_jump){
5990                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5991                                 },
5992                         },
5993                         [2] = {
5994                                 .type = RTE_FLOW_ACTION_TYPE_END,
5995                         },
5996                 };
5997                 uint32_t flow_idx;
5998                 struct rte_flow *flow;
5999                 struct rte_flow_error error;
6000
6001                 if (!config->dv_flow_en)
6002                         break;
6003                 /* Create internal flow, validation skips copy action. */
6004                 flow_idx = flow_list_create(dev, NULL, &attr, items,
6005                                             actions, false, &error);
6006                 flow = mlx5_ipool_get(priv->sh->ipool[MLX5_IPOOL_RTE_FLOW],
6007                                       flow_idx);
6008                 if (!flow)
6009                         continue;
6010                 if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
6011                         config->flow_mreg_c[n++] = idx;
6012                 flow_list_destroy(dev, NULL, flow_idx);
6013         }
6014         for (; n < MLX5_MREG_C_NUM; ++n)
6015                 config->flow_mreg_c[n] = REG_NONE;
6016         return 0;
6017 }
6018
6019 /**
6020  * Dump flow raw hw data to file
6021  *
6022  * @param[in] dev
6023  *    The pointer to Ethernet device.
6024  * @param[in] file
6025  *   A pointer to a file for output.
6026  * @param[out] error
6027  *   Perform verbose error reporting if not NULL. PMDs initialize this
6028  *   structure in case of error only.
6029  * @return
6030  *   0 on success, a nagative value otherwise.
6031  */
6032 int
6033 mlx5_flow_dev_dump(struct rte_eth_dev *dev,
6034                    FILE *file,
6035                    struct rte_flow_error *error __rte_unused)
6036 {
6037         struct mlx5_priv *priv = dev->data->dev_private;
6038         struct mlx5_ibv_shared *sh = priv->sh;
6039
6040         return mlx5_devx_cmd_flow_dump(sh->fdb_domain, sh->rx_domain,
6041                                        sh->tx_domain, file);
6042 }