drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_ethdev_driver.h>
  25 #include <rte_flow.h>
  26 #include <rte_flow_driver.h>
  27 #include <rte_malloc.h>
  28 #include <rte_ip.h>
  29
  30 #include <mlx5_glue.h>
  31 #include <mlx5_devx_cmds.h>
  32 #include <mlx5_prm.h>
  33
  34 #include "mlx5_defs.h"
  35 #include "mlx5.h"
  36 #include "mlx5_flow.h"
  37 #include "mlx5_rxtx.h"
  38
  39 /* Dev ops structure defined in mlx5.c */
  40 extern const struct eth_dev_ops mlx5_dev_ops;
  41 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  42
  43 /** Device flow drivers. */
  44 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  45 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  46 #endif
  47 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  48
  49 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  50
  51 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  52         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  53 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  54         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  55 #endif
  56         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  57         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  58 };
  59
  60 enum mlx5_expansion {
  61         MLX5_EXPANSION_ROOT,
  62         MLX5_EXPANSION_ROOT_OUTER,
  63         MLX5_EXPANSION_ROOT_ETH_VLAN,
  64         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  65         MLX5_EXPANSION_OUTER_ETH,
  66         MLX5_EXPANSION_OUTER_ETH_VLAN,
  67         MLX5_EXPANSION_OUTER_VLAN,
  68         MLX5_EXPANSION_OUTER_IPV4,
  69         MLX5_EXPANSION_OUTER_IPV4_UDP,
  70         MLX5_EXPANSION_OUTER_IPV4_TCP,
  71         MLX5_EXPANSION_OUTER_IPV6,
  72         MLX5_EXPANSION_OUTER_IPV6_UDP,
  73         MLX5_EXPANSION_OUTER_IPV6_TCP,
  74         MLX5_EXPANSION_VXLAN,
  75         MLX5_EXPANSION_VXLAN_GPE,
  76         MLX5_EXPANSION_GRE,
  77         MLX5_EXPANSION_MPLS,
  78         MLX5_EXPANSION_ETH,
  79         MLX5_EXPANSION_ETH_VLAN,
  80         MLX5_EXPANSION_VLAN,
  81         MLX5_EXPANSION_IPV4,
  82         MLX5_EXPANSION_IPV4_UDP,
  83         MLX5_EXPANSION_IPV4_TCP,
  84         MLX5_EXPANSION_IPV6,
  85         MLX5_EXPANSION_IPV6_UDP,
  86         MLX5_EXPANSION_IPV6_TCP,
  87 };
  88
  89 /** Supported expansion of items. */
  90 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  91         [MLX5_EXPANSION_ROOT] = {
  92                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  93                                                  MLX5_EXPANSION_IPV4,
  94                                                  MLX5_EXPANSION_IPV6),
  95                 .type = RTE_FLOW_ITEM_TYPE_END,
  96         },
  97         [MLX5_EXPANSION_ROOT_OUTER] = {
  98                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  99                                                  MLX5_EXPANSION_OUTER_IPV4,
 100                                                  MLX5_EXPANSION_OUTER_IPV6),
 101                 .type = RTE_FLOW_ITEM_TYPE_END,
 102         },
 103         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 104                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 105                 .type = RTE_FLOW_ITEM_TYPE_END,
 106         },
 107         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 108                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 109                 .type = RTE_FLOW_ITEM_TYPE_END,
 110         },
 111         [MLX5_EXPANSION_OUTER_ETH] = {
 112                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 113                                                  MLX5_EXPANSION_OUTER_IPV6,
 114                                                  MLX5_EXPANSION_MPLS),
 115                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 116                 .rss_types = 0,
 117         },
 118         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 119                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 120                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 121                 .rss_types = 0,
 122         },
 123         [MLX5_EXPANSION_OUTER_VLAN] = {
 124                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 125                                                  MLX5_EXPANSION_OUTER_IPV6),
 126                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 127         },
 128         [MLX5_EXPANSION_OUTER_IPV4] = {
 129                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 130                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 131                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 132                          MLX5_EXPANSION_GRE,
 133                          MLX5_EXPANSION_IPV4,
 134                          MLX5_EXPANSION_IPV6),
 135                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 136                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 137                         ETH_RSS_NONFRAG_IPV4_OTHER,
 138         },
 139         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 140                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 141                                                  MLX5_EXPANSION_VXLAN_GPE),
 142                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 143                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 144         },
 145         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 146                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 147                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 148         },
 149         [MLX5_EXPANSION_OUTER_IPV6] = {
 150                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 151                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 152                          MLX5_EXPANSION_OUTER_IPV6_TCP,
 153                          MLX5_EXPANSION_IPV4,
 154                          MLX5_EXPANSION_IPV6),
 155                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 156                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 157                         ETH_RSS_NONFRAG_IPV6_OTHER,
 158         },
 159         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 160                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 161                                                  MLX5_EXPANSION_VXLAN_GPE),
 162                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 163                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 164         },
 165         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 166                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 167                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 168         },
 169         [MLX5_EXPANSION_VXLAN] = {
 170                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 171                                                  MLX5_EXPANSION_IPV4,
 172                                                  MLX5_EXPANSION_IPV6),
 173                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 174         },
 175         [MLX5_EXPANSION_VXLAN_GPE] = {
 176                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 177                                                  MLX5_EXPANSION_IPV4,
 178                                                  MLX5_EXPANSION_IPV6),
 179                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 180         },
 181         [MLX5_EXPANSION_GRE] = {
 182                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 183                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 184         },
 185         [MLX5_EXPANSION_MPLS] = {
 186                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 187                                                  MLX5_EXPANSION_IPV6),
 188                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 189         },
 190         [MLX5_EXPANSION_ETH] = {
 191                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 192                                                  MLX5_EXPANSION_IPV6),
 193                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 194         },
 195         [MLX5_EXPANSION_ETH_VLAN] = {
 196                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 197                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 198         },
 199         [MLX5_EXPANSION_VLAN] = {
 200                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 201                                                  MLX5_EXPANSION_IPV6),
 202                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 203         },
 204         [MLX5_EXPANSION_IPV4] = {
 205                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 206                                                  MLX5_EXPANSION_IPV4_TCP),
 207                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 208                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 209                         ETH_RSS_NONFRAG_IPV4_OTHER,
 210         },
 211         [MLX5_EXPANSION_IPV4_UDP] = {
 212                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 213                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 214         },
 215         [MLX5_EXPANSION_IPV4_TCP] = {
 216                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 217                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 218         },
 219         [MLX5_EXPANSION_IPV6] = {
 220                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 221                                                  MLX5_EXPANSION_IPV6_TCP),
 222                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 223                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 224                         ETH_RSS_NONFRAG_IPV6_OTHER,
 225         },
 226         [MLX5_EXPANSION_IPV6_UDP] = {
 227                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 228                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 229         },
 230         [MLX5_EXPANSION_IPV6_TCP] = {
 231                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 232                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 233         },
 234 };
 235
 236 static const struct rte_flow_ops mlx5_flow_ops = {
 237         .validate = mlx5_flow_validate,
 238         .create = mlx5_flow_create,
 239         .destroy = mlx5_flow_destroy,
 240         .flush = mlx5_flow_flush,
 241         .isolate = mlx5_flow_isolate,
 242         .query = mlx5_flow_query,
 243         .dev_dump = mlx5_flow_dev_dump,
 244 };
 245
 246 /* Convert FDIR request to Generic flow. */
 247 struct mlx5_fdir {
 248         struct rte_flow_attr attr;
 249         struct rte_flow_item items[4];
 250         struct rte_flow_item_eth l2;
 251         struct rte_flow_item_eth l2_mask;
 252         union {
 253                 struct rte_flow_item_ipv4 ipv4;
 254                 struct rte_flow_item_ipv6 ipv6;
 255         } l3;
 256         union {
 257                 struct rte_flow_item_ipv4 ipv4;
 258                 struct rte_flow_item_ipv6 ipv6;
 259         } l3_mask;
 260         union {
 261                 struct rte_flow_item_udp udp;
 262                 struct rte_flow_item_tcp tcp;
 263         } l4;
 264         union {
 265                 struct rte_flow_item_udp udp;
 266                 struct rte_flow_item_tcp tcp;
 267         } l4_mask;
 268         struct rte_flow_action actions[2];
 269         struct rte_flow_action_queue queue;
 270 };
 271
 272 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 273 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 274         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 275 };
 276
 277 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 278 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 279         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 280         { 9, 10, 11 }, { 12, 13, 14 },
 281 };
 282
 283 /* Tunnel information. */
 284 struct mlx5_flow_tunnel_info {
 285         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 286         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 287 };
 288
 289 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 290         {
 291                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 292                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 293         },
 294         {
 295                 .tunnel = MLX5_FLOW_LAYER_GENEVE,
 296                 .ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
 297         },
 298         {
 299                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 300                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 301         },
 302         {
 303                 .tunnel = MLX5_FLOW_LAYER_GRE,
 304                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 305         },
 306         {
 307                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 308                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 309         },
 310         {
 311                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 312                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 313         },
 314         {
 315                 .tunnel = MLX5_FLOW_LAYER_NVGRE,
 316                 .ptype = RTE_PTYPE_TUNNEL_NVGRE,
 317         },
 318         {
 319                 .tunnel = MLX5_FLOW_LAYER_IPIP,
 320                 .ptype = RTE_PTYPE_TUNNEL_IP,
 321         },
 322         {
 323                 .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
 324                 .ptype = RTE_PTYPE_TUNNEL_IP,
 325         },
 326         {
 327                 .tunnel = MLX5_FLOW_LAYER_GTP,
 328                 .ptype = RTE_PTYPE_TUNNEL_GTPU,
 329         },
 330 };
 331
 332 /**
 333  * Translate tag ID to register.
 334  *
 335  * @param[in] dev
 336  *   Pointer to the Ethernet device structure.
 337  * @param[in] feature
 338  *   The feature that request the register.
 339  * @param[in] id
 340  *   The request register ID.
 341  * @param[out] error
 342  *   Error description in case of any.
 343  *
 344  * @return
 345  *   The request register on success, a negative errno
 346  *   value otherwise and rte_errno is set.
 347  */
 348 int
 349 mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 350                      enum mlx5_feature_name feature,
 351                      uint32_t id,
 352                      struct rte_flow_error *error)
 353 {
 354         struct mlx5_priv *priv = dev->data->dev_private;
 355         struct mlx5_dev_config *config = &priv->config;
 356         enum modify_reg start_reg;
 357         bool skip_mtr_reg = false;
 358
 359         switch (feature) {
 360         case MLX5_HAIRPIN_RX:
 361                 return REG_B;
 362         case MLX5_HAIRPIN_TX:
 363                 return REG_A;
 364         case MLX5_METADATA_RX:
 365                 switch (config->dv_xmeta_en) {
 366                 case MLX5_XMETA_MODE_LEGACY:
 367                         return REG_B;
 368                 case MLX5_XMETA_MODE_META16:
 369                         return REG_C_0;
 370                 case MLX5_XMETA_MODE_META32:
 371                         return REG_C_1;
 372                 }
 373                 break;
 374         case MLX5_METADATA_TX:
 375                 return REG_A;
 376         case MLX5_METADATA_FDB:
 377                 switch (config->dv_xmeta_en) {
 378                 case MLX5_XMETA_MODE_LEGACY:
 379                         return REG_NONE;
 380                 case MLX5_XMETA_MODE_META16:
 381                         return REG_C_0;
 382                 case MLX5_XMETA_MODE_META32:
 383                         return REG_C_1;
 384                 }
 385                 break;
 386         case MLX5_FLOW_MARK:
 387                 switch (config->dv_xmeta_en) {
 388                 case MLX5_XMETA_MODE_LEGACY:
 389                         return REG_NONE;
 390                 case MLX5_XMETA_MODE_META16:
 391                         return REG_C_1;
 392                 case MLX5_XMETA_MODE_META32:
 393                         return REG_C_0;
 394                 }
 395                 break;
 396         case MLX5_MTR_SFX:
 397                 /*
 398                  * If meter color and flow match share one register, flow match
 399                  * should use the meter color register for match.
 400                  */
 401                 if (priv->mtr_reg_share)
 402                         return priv->mtr_color_reg;
 403                 else
 404                         return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 405                                REG_C_3;
 406         case MLX5_MTR_COLOR:
 407                 MLX5_ASSERT(priv->mtr_color_reg != REG_NONE);
 408                 return priv->mtr_color_reg;
 409         case MLX5_COPY_MARK:
 410                 /*
 411                  * Metadata COPY_MARK register using is in meter suffix sub
 412                  * flow while with meter. It's safe to share the same register.
 413                  */
 414                 return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 415         case MLX5_APP_TAG:
 416                 /*
 417                  * If meter is enable, it will engage the register for color
 418                  * match and flow match. If meter color match is not using the
 419                  * REG_C_2, need to skip the REG_C_x be used by meter color
 420                  * match.
 421                  * If meter is disable, free to use all available registers.
 422                  */
 423                 start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 424                             (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 425                 skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 426                 if (id > (REG_C_7 - start_reg))
 427                         return rte_flow_error_set(error, EINVAL,
 428                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 429                                                   NULL, "invalid tag id");
 430                 if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
 431                         return rte_flow_error_set(error, ENOTSUP,
 432                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 433                                                   NULL, "unsupported tag id");
 434                 /*
 435                  * This case means meter is using the REG_C_x great than 2.
 436                  * Take care not to conflict with meter color REG_C_x.
 437                  * If the available index REG_C_y >= REG_C_x, skip the
 438                  * color register.
 439                  */
 440                 if (skip_mtr_reg && config->flow_mreg_c
 441                     [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
 442                         if (config->flow_mreg_c
 443                             [id + 1 + start_reg - REG_C_0] != REG_NONE)
 444                                 return config->flow_mreg_c
 445                                                [id + 1 + start_reg - REG_C_0];
 446                         return rte_flow_error_set(error, ENOTSUP,
 447                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 448                                                   NULL, "unsupported tag id");
 449                 }
 450                 return config->flow_mreg_c[id + start_reg - REG_C_0];
 451         }
 452         MLX5_ASSERT(false);
 453         return rte_flow_error_set(error, EINVAL,
 454                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 455                                   NULL, "invalid feature name");
 456 }
 457
 458 /**
 459  * Check extensive flow metadata register support.
 460  *
 461  * @param dev
 462  *   Pointer to rte_eth_dev structure.
 463  *
 464  * @return
 465  *   True if device supports extensive flow metadata register, otherwise false.
 466  */
 467 bool
 468 mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
 469 {
 470         struct mlx5_priv *priv = dev->data->dev_private;
 471         struct mlx5_dev_config *config = &priv->config;
 472
 473         /*
 474          * Having available reg_c can be regarded inclusively as supporting
 475          * extensive flow metadata register, which could mean,
 476          * - metadata register copy action by modify header.
 477          * - 16 modify header actions is supported.
 478          * - reg_c's are preserved across different domain (FDB and NIC) on
 479          *   packet loopback by flow lookup miss.
 480          */
 481         return config->flow_mreg_c[2] != REG_NONE;
 482 }
 483
 484 /**
 485  * Discover the maximum number of priority available.
 486  *
 487  * @param[in] dev
 488  *   Pointer to the Ethernet device structure.
 489  *
 490  * @return
 491  *   number of supported flow priority on success, a negative errno
 492  *   value otherwise and rte_errno is set.
 493  */
 494 int
 495 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 496 {
 497         struct mlx5_priv *priv = dev->data->dev_private;
 498         struct {
 499                 struct ibv_flow_attr attr;
 500                 struct ibv_flow_spec_eth eth;
 501                 struct ibv_flow_spec_action_drop drop;
 502         } flow_attr = {
 503                 .attr = {
 504                         .num_of_specs = 2,
 505                         .port = (uint8_t)priv->ibv_port,
 506                 },
 507                 .eth = {
 508                         .type = IBV_FLOW_SPEC_ETH,
 509                         .size = sizeof(struct ibv_flow_spec_eth),
 510                 },
 511                 .drop = {
 512                         .size = sizeof(struct ibv_flow_spec_action_drop),
 513                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 514                 },
 515         };
 516         struct ibv_flow *flow;
 517         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 518         uint16_t vprio[] = { 8, 16 };
 519         int i;
 520         int priority = 0;
 521
 522         if (!drop) {
 523                 rte_errno = ENOTSUP;
 524                 return -rte_errno;
 525         }
 526         for (i = 0; i != RTE_DIM(vprio); i++) {
 527                 flow_attr.attr.priority = vprio[i] - 1;
 528                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 529                 if (!flow)
 530                         break;
 531                 claim_zero(mlx5_glue->destroy_flow(flow));
 532                 priority = vprio[i];
 533         }
 534         mlx5_hrxq_drop_release(dev);
 535         switch (priority) {
 536         case 8:
 537                 priority = RTE_DIM(priority_map_3);
 538                 break;
 539         case 16:
 540                 priority = RTE_DIM(priority_map_5);
 541                 break;
 542         default:
 543                 rte_errno = ENOTSUP;
 544                 DRV_LOG(ERR,
 545                         "port %u verbs maximum priority: %d expected 8/16",
 546                         dev->data->port_id, priority);
 547                 return -rte_errno;
 548         }
 549         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 550                 dev->data->port_id, priority);
 551         return priority;
 552 }
 553
 554 /**
 555  * Adjust flow priority based on the highest layer and the request priority.
 556  *
 557  * @param[in] dev
 558  *   Pointer to the Ethernet device structure.
 559  * @param[in] priority
 560  *   The rule base priority.
 561  * @param[in] subpriority
 562  *   The priority based on the items.
 563  *
 564  * @return
 565  *   The new priority.
 566  */
 567 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 568                                    uint32_t subpriority)
 569 {
 570         uint32_t res = 0;
 571         struct mlx5_priv *priv = dev->data->dev_private;
 572
 573         switch (priv->config.flow_prio) {
 574         case RTE_DIM(priority_map_3):
 575                 res = priority_map_3[priority][subpriority];
 576                 break;
 577         case RTE_DIM(priority_map_5):
 578                 res = priority_map_5[priority][subpriority];
 579                 break;
 580         }
 581         return  res;
 582 }
 583
 584 /**
 585  * Verify the @p item specifications (spec, last, mask) are compatible with the
 586  * NIC capabilities.
 587  *
 588  * @param[in] item
 589  *   Item specification.
 590  * @param[in] mask
 591  *   @p item->mask or flow default bit-masks.
 592  * @param[in] nic_mask
 593  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 594  * @param[in] size
 595  *   Bit-masks size in bytes.
 596  * @param[out] error
 597  *   Pointer to error structure.
 598  *
 599  * @return
 600  *   0 on success, a negative errno value otherwise and rte_errno is set.
 601  */
 602 int
 603 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 604                           const uint8_t *mask,
 605                           const uint8_t *nic_mask,
 606                           unsigned int size,
 607                           struct rte_flow_error *error)
 608 {
 609         unsigned int i;
 610
 611         MLX5_ASSERT(nic_mask);
 612         for (i = 0; i < size; ++i)
 613                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 614                         return rte_flow_error_set(error, ENOTSUP,
 615                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 616                                                   item,
 617                                                   "mask enables non supported"
 618                                                   " bits");
 619         if (!item->spec && (item->mask || item->last))
 620                 return rte_flow_error_set(error, EINVAL,
 621                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 622                                           "mask/last without a spec is not"
 623                                           " supported");
 624         if (item->spec && item->last) {
 625                 uint8_t spec[size];
 626                 uint8_t last[size];
 627                 unsigned int i;
 628                 int ret;
 629
 630                 for (i = 0; i < size; ++i) {
 631                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 632                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 633                 }
 634                 ret = memcmp(spec, last, size);
 635                 if (ret != 0)
 636                         return rte_flow_error_set(error, EINVAL,
 637                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 638                                                   item,
 639                                                   "range is not valid");
 640         }
 641         return 0;
 642 }
 643
 644 /**
 645  * Adjust the hash fields according to the @p flow information.
 646  *
 647  * @param[in] dev_flow.
 648  *   Pointer to the mlx5_flow.
 649  * @param[in] tunnel
 650  *   1 when the hash field is for a tunnel item.
 651  * @param[in] layer_types
 652  *   ETH_RSS_* types.
 653  * @param[in] hash_fields
 654  *   Item hash fields.
 655  *
 656  * @return
 657  *   The hash fields that should be used.
 658  */
 659 uint64_t
 660 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 661                             int tunnel __rte_unused, uint64_t layer_types,
 662                             uint64_t hash_fields)
 663 {
 664         struct rte_flow *flow = dev_flow->flow;
 665 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 666         int rss_request_inner = flow->rss.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 (!(flow->rss.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_flow
 715  *   Pointer to device flow structure.
 716  */
 717 static void
 718 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 719 {
 720         struct mlx5_priv *priv = dev->data->dev_private;
 721         struct rte_flow *flow = dev_flow->flow;
 722         const int mark = !!(dev_flow->actions &
 723                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 724         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 725         unsigned int i;
 726
 727         for (i = 0; i != flow->rss.queue_num; ++i) {
 728                 int idx = (*flow->rss.queue)[i];
 729                 struct mlx5_rxq_ctrl *rxq_ctrl =
 730                         container_of((*priv->rxqs)[idx],
 731                                      struct mlx5_rxq_ctrl, rxq);
 732
 733                 /*
 734                  * To support metadata register copy on Tx loopback,
 735                  * this must be always enabled (metadata may arive
 736                  * from other port - not from local flows only.
 737                  */
 738                 if (priv->config.dv_flow_en &&
 739                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 740                     mlx5_flow_ext_mreg_supported(dev)) {
 741                         rxq_ctrl->rxq.mark = 1;
 742                         rxq_ctrl->flow_mark_n = 1;
 743                 } else if (mark) {
 744                         rxq_ctrl->rxq.mark = 1;
 745                         rxq_ctrl->flow_mark_n++;
 746                 }
 747                 if (tunnel) {
 748                         unsigned int j;
 749
 750                         /* Increase the counter matching the flow. */
 751                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 752                                 if ((tunnels_info[j].tunnel &
 753                                      dev_flow->layers) ==
 754                                     tunnels_info[j].tunnel) {
 755                                         rxq_ctrl->flow_tunnels_n[j]++;
 756                                         break;
 757                                 }
 758                         }
 759                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 760                 }
 761         }
 762 }
 763
 764 /**
 765  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 766  *
 767  * @param[in] dev
 768  *   Pointer to the Ethernet device structure.
 769  * @param[in] flow
 770  *   Pointer to flow structure.
 771  */
 772 static void
 773 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 774 {
 775         struct mlx5_flow *dev_flow;
 776
 777         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 778                 flow_drv_rxq_flags_set(dev, dev_flow);
 779 }
 780
 781 /**
 782  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 783  * device flow if no other flow uses it with the same kind of request.
 784  *
 785  * @param dev
 786  *   Pointer to Ethernet device.
 787  * @param[in] dev_flow
 788  *   Pointer to the device flow.
 789  */
 790 static void
 791 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 792 {
 793         struct mlx5_priv *priv = dev->data->dev_private;
 794         struct rte_flow *flow = dev_flow->flow;
 795         const int mark = !!(dev_flow->actions &
 796                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 797         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 798         unsigned int i;
 799
 800         MLX5_ASSERT(dev->data->dev_started);
 801         for (i = 0; i != flow->rss.queue_num; ++i) {
 802                 int idx = (*flow->rss.queue)[i];
 803                 struct mlx5_rxq_ctrl *rxq_ctrl =
 804                         container_of((*priv->rxqs)[idx],
 805                                      struct mlx5_rxq_ctrl, rxq);
 806
 807                 if (priv->config.dv_flow_en &&
 808                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 809                     mlx5_flow_ext_mreg_supported(dev)) {
 810                         rxq_ctrl->rxq.mark = 1;
 811                         rxq_ctrl->flow_mark_n = 1;
 812                 } else if (mark) {
 813                         rxq_ctrl->flow_mark_n--;
 814                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 815                 }
 816                 if (tunnel) {
 817                         unsigned int j;
 818
 819                         /* Decrease the counter matching the flow. */
 820                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 821                                 if ((tunnels_info[j].tunnel &
 822                                      dev_flow->layers) ==
 823                                     tunnels_info[j].tunnel) {
 824                                         rxq_ctrl->flow_tunnels_n[j]--;
 825                                         break;
 826                                 }
 827                         }
 828                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 829                 }
 830         }
 831 }
 832
 833 /**
 834  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 835  * @p flow if no other flow uses it with the same kind of request.
 836  *
 837  * @param dev
 838  *   Pointer to Ethernet device.
 839  * @param[in] flow
 840  *   Pointer to the flow.
 841  */
 842 static void
 843 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 844 {
 845         struct mlx5_flow *dev_flow;
 846
 847         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 848                 flow_drv_rxq_flags_trim(dev, dev_flow);
 849 }
 850
 851 /**
 852  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 853  *
 854  * @param dev
 855  *   Pointer to Ethernet device.
 856  */
 857 static void
 858 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 859 {
 860         struct mlx5_priv *priv = dev->data->dev_private;
 861         unsigned int i;
 862
 863         for (i = 0; i != priv->rxqs_n; ++i) {
 864                 struct mlx5_rxq_ctrl *rxq_ctrl;
 865                 unsigned int j;
 866
 867                 if (!(*priv->rxqs)[i])
 868                         continue;
 869                 rxq_ctrl = container_of((*priv->rxqs)[i],
 870                                         struct mlx5_rxq_ctrl, rxq);
 871                 rxq_ctrl->flow_mark_n = 0;
 872                 rxq_ctrl->rxq.mark = 0;
 873                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 874                         rxq_ctrl->flow_tunnels_n[j] = 0;
 875                 rxq_ctrl->rxq.tunnel = 0;
 876         }
 877 }
 878
 879 /*
 880  * return a pointer to the desired action in the list of actions.
 881  *
 882  * @param[in] actions
 883  *   The list of actions to search the action in.
 884  * @param[in] action
 885  *   The action to find.
 886  *
 887  * @return
 888  *   Pointer to the action in the list, if found. NULL otherwise.
 889  */
 890 const struct rte_flow_action *
 891 mlx5_flow_find_action(const struct rte_flow_action *actions,
 892                       enum rte_flow_action_type action)
 893 {
 894         if (actions == NULL)
 895                 return NULL;
 896         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
 897                 if (actions->type == action)
 898                         return actions;
 899         return NULL;
 900 }
 901
 902 /*
 903  * Validate the flag action.
 904  *
 905  * @param[in] action_flags
 906  *   Bit-fields that holds the actions detected until now.
 907  * @param[in] attr
 908  *   Attributes of flow that includes this action.
 909  * @param[out] error
 910  *   Pointer to error structure.
 911  *
 912  * @return
 913  *   0 on success, a negative errno value otherwise and rte_errno is set.
 914  */
 915 int
 916 mlx5_flow_validate_action_flag(uint64_t action_flags,
 917                                const struct rte_flow_attr *attr,
 918                                struct rte_flow_error *error)
 919 {
 920         if (action_flags & MLX5_FLOW_ACTION_MARK)
 921                 return rte_flow_error_set(error, EINVAL,
 922                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 923                                           "can't mark and flag in same flow");
 924         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 925                 return rte_flow_error_set(error, EINVAL,
 926                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 927                                           "can't have 2 flag"
 928                                           " actions in same flow");
 929         if (attr->egress)
 930                 return rte_flow_error_set(error, ENOTSUP,
 931                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 932                                           "flag action not supported for "
 933                                           "egress");
 934         return 0;
 935 }
 936
 937 /*
 938  * Validate the mark action.
 939  *
 940  * @param[in] action
 941  *   Pointer to the queue action.
 942  * @param[in] action_flags
 943  *   Bit-fields that holds the actions detected until now.
 944  * @param[in] attr
 945  *   Attributes of flow that includes this action.
 946  * @param[out] error
 947  *   Pointer to error structure.
 948  *
 949  * @return
 950  *   0 on success, a negative errno value otherwise and rte_errno is set.
 951  */
 952 int
 953 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 954                                uint64_t action_flags,
 955                                const struct rte_flow_attr *attr,
 956                                struct rte_flow_error *error)
 957 {
 958         const struct rte_flow_action_mark *mark = action->conf;
 959
 960         if (!mark)
 961                 return rte_flow_error_set(error, EINVAL,
 962                                           RTE_FLOW_ERROR_TYPE_ACTION,
 963                                           action,
 964                                           "configuration cannot be null");
 965         if (mark->id >= MLX5_FLOW_MARK_MAX)
 966                 return rte_flow_error_set(error, EINVAL,
 967                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 968                                           &mark->id,
 969                                           "mark id must in 0 <= id < "
 970                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 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 flag and mark in same flow");
 975         if (action_flags & MLX5_FLOW_ACTION_MARK)
 976                 return rte_flow_error_set(error, EINVAL,
 977                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 978                                           "can't have 2 mark actions in same"
 979                                           " flow");
 980         if (attr->egress)
 981                 return rte_flow_error_set(error, ENOTSUP,
 982                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 983                                           "mark action not supported for "
 984                                           "egress");
 985         return 0;
 986 }
 987
 988 /*
 989  * Validate the drop action.
 990  *
 991  * @param[in] action_flags
 992  *   Bit-fields that holds the actions detected until now.
 993  * @param[in] attr
 994  *   Attributes of flow that includes this action.
 995  * @param[out] error
 996  *   Pointer to error structure.
 997  *
 998  * @return
 999  *   0 on success, a negative errno value otherwise and rte_errno is set.
1000  */
1001 int
1002 mlx5_flow_validate_action_drop(uint64_t action_flags __rte_unused,
1003                                const struct rte_flow_attr *attr,
1004                                struct rte_flow_error *error)
1005 {
1006         if (attr->egress)
1007                 return rte_flow_error_set(error, ENOTSUP,
1008                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1009                                           "drop action not supported for "
1010                                           "egress");
1011         return 0;
1012 }
1013
1014 /*
1015  * Validate the queue action.
1016  *
1017  * @param[in] action
1018  *   Pointer to the queue action.
1019  * @param[in] action_flags
1020  *   Bit-fields that holds the actions detected until now.
1021  * @param[in] dev
1022  *   Pointer to the Ethernet device structure.
1023  * @param[in] attr
1024  *   Attributes of flow that includes this action.
1025  * @param[out] error
1026  *   Pointer to error structure.
1027  *
1028  * @return
1029  *   0 on success, a negative errno value otherwise and rte_errno is set.
1030  */
1031 int
1032 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
1033                                 uint64_t action_flags,
1034                                 struct rte_eth_dev *dev,
1035                                 const struct rte_flow_attr *attr,
1036                                 struct rte_flow_error *error)
1037 {
1038         struct mlx5_priv *priv = dev->data->dev_private;
1039         const struct rte_flow_action_queue *queue = action->conf;
1040
1041         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1042                 return rte_flow_error_set(error, EINVAL,
1043                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1044                                           "can't have 2 fate actions in"
1045                                           " same flow");
1046         if (!priv->rxqs_n)
1047                 return rte_flow_error_set(error, EINVAL,
1048                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1049                                           NULL, "No Rx queues configured");
1050         if (queue->index >= priv->rxqs_n)
1051                 return rte_flow_error_set(error, EINVAL,
1052                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1053                                           &queue->index,
1054                                           "queue index out of range");
1055         if (!(*priv->rxqs)[queue->index])
1056                 return rte_flow_error_set(error, EINVAL,
1057                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1058                                           &queue->index,
1059                                           "queue is not configured");
1060         if (attr->egress)
1061                 return rte_flow_error_set(error, ENOTSUP,
1062                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1063                                           "queue action not supported for "
1064                                           "egress");
1065         return 0;
1066 }
1067
1068 /*
1069  * Validate the rss action.
1070  *
1071  * @param[in] action
1072  *   Pointer to the queue action.
1073  * @param[in] action_flags
1074  *   Bit-fields that holds the actions detected until now.
1075  * @param[in] dev
1076  *   Pointer to the Ethernet device structure.
1077  * @param[in] attr
1078  *   Attributes of flow that includes this action.
1079  * @param[in] item_flags
1080  *   Items that were detected.
1081  * @param[out] error
1082  *   Pointer to error structure.
1083  *
1084  * @return
1085  *   0 on success, a negative errno value otherwise and rte_errno is set.
1086  */
1087 int
1088 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
1089                               uint64_t action_flags,
1090                               struct rte_eth_dev *dev,
1091                               const struct rte_flow_attr *attr,
1092                               uint64_t item_flags,
1093                               struct rte_flow_error *error)
1094 {
1095         struct mlx5_priv *priv = dev->data->dev_private;
1096         const struct rte_flow_action_rss *rss = action->conf;
1097         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1098         unsigned int i;
1099
1100         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1101                 return rte_flow_error_set(error, EINVAL,
1102                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1103                                           "can't have 2 fate actions"
1104                                           " in same flow");
1105         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
1106             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
1107                 return rte_flow_error_set(error, ENOTSUP,
1108                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1109                                           &rss->func,
1110                                           "RSS hash function not supported");
1111 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1112         if (rss->level > 2)
1113 #else
1114         if (rss->level > 1)
1115 #endif
1116                 return rte_flow_error_set(error, ENOTSUP,
1117                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1118                                           &rss->level,
1119                                           "tunnel RSS is not supported");
1120         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
1121         if (rss->key_len == 0 && rss->key != NULL)
1122                 return rte_flow_error_set(error, ENOTSUP,
1123                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1124                                           &rss->key_len,
1125                                           "RSS hash key length 0");
1126         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
1127                 return rte_flow_error_set(error, ENOTSUP,
1128                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1129                                           &rss->key_len,
1130                                           "RSS hash key too small");
1131         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
1132                 return rte_flow_error_set(error, ENOTSUP,
1133                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1134                                           &rss->key_len,
1135                                           "RSS hash key too large");
1136         if (rss->queue_num > priv->config.ind_table_max_size)
1137                 return rte_flow_error_set(error, ENOTSUP,
1138                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1139                                           &rss->queue_num,
1140                                           "number of queues too large");
1141         if (rss->types & MLX5_RSS_HF_MASK)
1142                 return rte_flow_error_set(error, ENOTSUP,
1143                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1144                                           &rss->types,
1145                                           "some RSS protocols are not"
1146                                           " supported");
1147         if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
1148             !(rss->types & ETH_RSS_IP))
1149                 return rte_flow_error_set(error, EINVAL,
1150                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1151                                           "L3 partial RSS requested but L3 RSS"
1152                                           " type not specified");
1153         if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
1154             !(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
1155                 return rte_flow_error_set(error, EINVAL,
1156                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1157                                           "L4 partial RSS requested but L4 RSS"
1158                                           " type not specified");
1159         if (!priv->rxqs_n)
1160                 return rte_flow_error_set(error, EINVAL,
1161                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1162                                           NULL, "No Rx queues configured");
1163         if (!rss->queue_num)
1164                 return rte_flow_error_set(error, EINVAL,
1165                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1166                                           NULL, "No queues configured");
1167         for (i = 0; i != rss->queue_num; ++i) {
1168                 if (rss->queue[i] >= priv->rxqs_n)
1169                         return rte_flow_error_set
1170                                 (error, EINVAL,
1171                                  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1172                                  &rss->queue[i], "queue index out of range");
1173                 if (!(*priv->rxqs)[rss->queue[i]])
1174                         return rte_flow_error_set
1175                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1176                                  &rss->queue[i], "queue is not configured");
1177         }
1178         if (attr->egress)
1179                 return rte_flow_error_set(error, ENOTSUP,
1180                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1181                                           "rss action not supported for "
1182                                           "egress");
1183         if (rss->level > 1 &&  !tunnel)
1184                 return rte_flow_error_set(error, EINVAL,
1185                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1186                                           "inner RSS is not supported for "
1187                                           "non-tunnel flows");
1188         return 0;
1189 }
1190
1191 /*
1192  * Validate the count action.
1193  *
1194  * @param[in] dev
1195  *   Pointer to the Ethernet device structure.
1196  * @param[in] attr
1197  *   Attributes of flow that includes this action.
1198  * @param[out] error
1199  *   Pointer to error structure.
1200  *
1201  * @return
1202  *   0 on success, a negative errno value otherwise and rte_errno is set.
1203  */
1204 int
1205 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
1206                                 const struct rte_flow_attr *attr,
1207                                 struct rte_flow_error *error)
1208 {
1209         if (attr->egress)
1210                 return rte_flow_error_set(error, ENOTSUP,
1211                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1212                                           "count action not supported for "
1213                                           "egress");
1214         return 0;
1215 }
1216
1217 /**
1218  * Verify the @p attributes will be correctly understood by the NIC and store
1219  * them in the @p flow if everything is correct.
1220  *
1221  * @param[in] dev
1222  *   Pointer to the Ethernet device structure.
1223  * @param[in] attributes
1224  *   Pointer to flow attributes
1225  * @param[out] error
1226  *   Pointer to error structure.
1227  *
1228  * @return
1229  *   0 on success, a negative errno value otherwise and rte_errno is set.
1230  */
1231 int
1232 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1233                               const struct rte_flow_attr *attributes,
1234                               struct rte_flow_error *error)
1235 {
1236         struct mlx5_priv *priv = dev->data->dev_private;
1237         uint32_t priority_max = priv->config.flow_prio - 1;
1238
1239         if (attributes->group)
1240                 return rte_flow_error_set(error, ENOTSUP,
1241                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1242                                           NULL, "groups is not supported");
1243         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1244             attributes->priority >= priority_max)
1245                 return rte_flow_error_set(error, ENOTSUP,
1246                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1247                                           NULL, "priority out of range");
1248         if (attributes->egress)
1249                 return rte_flow_error_set(error, ENOTSUP,
1250                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1251                                           "egress is not supported");
1252         if (attributes->transfer && !priv->config.dv_esw_en)
1253                 return rte_flow_error_set(error, ENOTSUP,
1254                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1255                                           NULL, "transfer is not supported");
1256         if (!attributes->ingress)
1257                 return rte_flow_error_set(error, EINVAL,
1258                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1259                                           NULL,
1260                                           "ingress attribute is mandatory");
1261         return 0;
1262 }
1263
1264 /**
1265  * Validate ICMP6 item.
1266  *
1267  * @param[in] item
1268  *   Item specification.
1269  * @param[in] item_flags
1270  *   Bit-fields that holds the items detected until now.
1271  * @param[out] error
1272  *   Pointer to error structure.
1273  *
1274  * @return
1275  *   0 on success, a negative errno value otherwise and rte_errno is set.
1276  */
1277 int
1278 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1279                                uint64_t item_flags,
1280                                uint8_t target_protocol,
1281                                struct rte_flow_error *error)
1282 {
1283         const struct rte_flow_item_icmp6 *mask = item->mask;
1284         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1285         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1286                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1287         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1288                                       MLX5_FLOW_LAYER_OUTER_L4;
1289         int ret;
1290
1291         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1292                 return rte_flow_error_set(error, EINVAL,
1293                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1294                                           "protocol filtering not compatible"
1295                                           " with ICMP6 layer");
1296         if (!(item_flags & l3m))
1297                 return rte_flow_error_set(error, EINVAL,
1298                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1299                                           "IPv6 is mandatory to filter on"
1300                                           " ICMP6");
1301         if (item_flags & l4m)
1302                 return rte_flow_error_set(error, EINVAL,
1303                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1304                                           "multiple L4 layers not supported");
1305         if (!mask)
1306                 mask = &rte_flow_item_icmp6_mask;
1307         ret = mlx5_flow_item_acceptable
1308                 (item, (const uint8_t *)mask,
1309                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1310                  sizeof(struct rte_flow_item_icmp6), error);
1311         if (ret < 0)
1312                 return ret;
1313         return 0;
1314 }
1315
1316 /**
1317  * Validate ICMP item.
1318  *
1319  * @param[in] item
1320  *   Item specification.
1321  * @param[in] item_flags
1322  *   Bit-fields that holds the items detected until now.
1323  * @param[out] error
1324  *   Pointer to error structure.
1325  *
1326  * @return
1327  *   0 on success, a negative errno value otherwise and rte_errno is set.
1328  */
1329 int
1330 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1331                              uint64_t item_flags,
1332                              uint8_t target_protocol,
1333                              struct rte_flow_error *error)
1334 {
1335         const struct rte_flow_item_icmp *mask = item->mask;
1336         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1337         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1338                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1339         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1340                                       MLX5_FLOW_LAYER_OUTER_L4;
1341         int ret;
1342
1343         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1344                 return rte_flow_error_set(error, EINVAL,
1345                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1346                                           "protocol filtering not compatible"
1347                                           " with ICMP layer");
1348         if (!(item_flags & l3m))
1349                 return rte_flow_error_set(error, EINVAL,
1350                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1351                                           "IPv4 is mandatory to filter"
1352                                           " on ICMP");
1353         if (item_flags & l4m)
1354                 return rte_flow_error_set(error, EINVAL,
1355                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1356                                           "multiple L4 layers not supported");
1357         if (!mask)
1358                 mask = &rte_flow_item_icmp_mask;
1359         ret = mlx5_flow_item_acceptable
1360                 (item, (const uint8_t *)mask,
1361                  (const uint8_t *)&rte_flow_item_icmp_mask,
1362                  sizeof(struct rte_flow_item_icmp), error);
1363         if (ret < 0)
1364                 return ret;
1365         return 0;
1366 }
1367
1368 /**
1369  * Validate Ethernet item.
1370  *
1371  * @param[in] item
1372  *   Item specification.
1373  * @param[in] item_flags
1374  *   Bit-fields that holds the items detected until now.
1375  * @param[out] error
1376  *   Pointer to error structure.
1377  *
1378  * @return
1379  *   0 on success, a negative errno value otherwise and rte_errno is set.
1380  */
1381 int
1382 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1383                             uint64_t item_flags,
1384                             struct rte_flow_error *error)
1385 {
1386         const struct rte_flow_item_eth *mask = item->mask;
1387         const struct rte_flow_item_eth nic_mask = {
1388                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1389                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1390                 .type = RTE_BE16(0xffff),
1391         };
1392         int ret;
1393         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1394         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1395                                        MLX5_FLOW_LAYER_OUTER_L2;
1396
1397         if (item_flags & ethm)
1398                 return rte_flow_error_set(error, ENOTSUP,
1399                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1400                                           "multiple L2 layers not supported");
1401         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
1402             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
1403                 return rte_flow_error_set(error, EINVAL,
1404                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1405                                           "L2 layer should not follow "
1406                                           "L3 layers");
1407         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
1408             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
1409                 return rte_flow_error_set(error, EINVAL,
1410                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1411                                           "L2 layer should not follow VLAN");
1412         if (!mask)
1413                 mask = &rte_flow_item_eth_mask;
1414         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1415                                         (const uint8_t *)&nic_mask,
1416                                         sizeof(struct rte_flow_item_eth),
1417                                         error);
1418         return ret;
1419 }
1420
1421 /**
1422  * Validate VLAN item.
1423  *
1424  * @param[in] item
1425  *   Item specification.
1426  * @param[in] item_flags
1427  *   Bit-fields that holds the items detected until now.
1428  * @param[in] dev
1429  *   Ethernet device flow is being created on.
1430  * @param[out] error
1431  *   Pointer to error structure.
1432  *
1433  * @return
1434  *   0 on success, a negative errno value otherwise and rte_errno is set.
1435  */
1436 int
1437 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1438                              uint64_t item_flags,
1439                              struct rte_eth_dev *dev,
1440                              struct rte_flow_error *error)
1441 {
1442         const struct rte_flow_item_vlan *spec = item->spec;
1443         const struct rte_flow_item_vlan *mask = item->mask;
1444         const struct rte_flow_item_vlan nic_mask = {
1445                 .tci = RTE_BE16(UINT16_MAX),
1446                 .inner_type = RTE_BE16(UINT16_MAX),
1447         };
1448         uint16_t vlan_tag = 0;
1449         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1450         int ret;
1451         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1452                                         MLX5_FLOW_LAYER_INNER_L4) :
1453                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1454                                         MLX5_FLOW_LAYER_OUTER_L4);
1455         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1456                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1457
1458         if (item_flags & vlanm)
1459                 return rte_flow_error_set(error, EINVAL,
1460                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1461                                           "multiple VLAN layers not supported");
1462         else if ((item_flags & l34m) != 0)
1463                 return rte_flow_error_set(error, EINVAL,
1464                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1465                                           "VLAN cannot follow L3/L4 layer");
1466         if (!mask)
1467                 mask = &rte_flow_item_vlan_mask;
1468         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1469                                         (const uint8_t *)&nic_mask,
1470                                         sizeof(struct rte_flow_item_vlan),
1471                                         error);
1472         if (ret)
1473                 return ret;
1474         if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
1475                 struct mlx5_priv *priv = dev->data->dev_private;
1476
1477                 if (priv->vmwa_context) {
1478                         /*
1479                          * Non-NULL context means we have a virtual machine
1480                          * and SR-IOV enabled, we have to create VLAN interface
1481                          * to make hypervisor to setup E-Switch vport
1482                          * context correctly. We avoid creating the multiple
1483                          * VLAN interfaces, so we cannot support VLAN tag mask.
1484                          */
1485                         return rte_flow_error_set(error, EINVAL,
1486                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1487                                                   item,
1488                                                   "VLAN tag mask is not"
1489                                                   " supported in virtual"
1490                                                   " environment");
1491                 }
1492         }
1493         if (spec) {
1494                 vlan_tag = spec->tci;
1495                 vlan_tag &= mask->tci;
1496         }
1497         /*
1498          * From verbs perspective an empty VLAN is equivalent
1499          * to a packet without VLAN layer.
1500          */
1501         if (!vlan_tag)
1502                 return rte_flow_error_set(error, EINVAL,
1503                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1504                                           item->spec,
1505                                           "VLAN cannot be empty");
1506         return 0;
1507 }
1508
1509 /**
1510  * Validate IPV4 item.
1511  *
1512  * @param[in] item
1513  *   Item specification.
1514  * @param[in] item_flags
1515  *   Bit-fields that holds the items detected until now.
1516  * @param[in] acc_mask
1517  *   Acceptable mask, if NULL default internal default mask
1518  *   will be used to check whether item fields are supported.
1519  * @param[out] error
1520  *   Pointer to error structure.
1521  *
1522  * @return
1523  *   0 on success, a negative errno value otherwise and rte_errno is set.
1524  */
1525 int
1526 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1527                              uint64_t item_flags,
1528                              uint64_t last_item,
1529                              uint16_t ether_type,
1530                              const struct rte_flow_item_ipv4 *acc_mask,
1531                              struct rte_flow_error *error)
1532 {
1533         const struct rte_flow_item_ipv4 *mask = item->mask;
1534         const struct rte_flow_item_ipv4 *spec = item->spec;
1535         const struct rte_flow_item_ipv4 nic_mask = {
1536                 .hdr = {
1537                         .src_addr = RTE_BE32(0xffffffff),
1538                         .dst_addr = RTE_BE32(0xffffffff),
1539                         .type_of_service = 0xff,
1540                         .next_proto_id = 0xff,
1541                 },
1542         };
1543         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1544         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1545                                       MLX5_FLOW_LAYER_OUTER_L3;
1546         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1547                                       MLX5_FLOW_LAYER_OUTER_L4;
1548         int ret;
1549         uint8_t next_proto = 0xFF;
1550         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1551                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1552                                   MLX5_FLOW_LAYER_INNER_VLAN);
1553
1554         if ((last_item & l2_vlan) && ether_type &&
1555             ether_type != RTE_ETHER_TYPE_IPV4)
1556                 return rte_flow_error_set(error, EINVAL,
1557                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1558                                           "IPv4 cannot follow L2/VLAN layer "
1559                                           "which ether type is not IPv4");
1560         if (item_flags & MLX5_FLOW_LAYER_IPIP) {
1561                 if (mask && spec)
1562                         next_proto = mask->hdr.next_proto_id &
1563                                      spec->hdr.next_proto_id;
1564                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1565                         return rte_flow_error_set(error, EINVAL,
1566                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1567                                                   item,
1568                                                   "multiple tunnel "
1569                                                   "not supported");
1570         }
1571         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
1572                 return rte_flow_error_set(error, EINVAL,
1573                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1574                                           "wrong tunnel type - IPv6 specified "
1575                                           "but IPv4 item provided");
1576         if (item_flags & l3m)
1577                 return rte_flow_error_set(error, ENOTSUP,
1578                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1579                                           "multiple L3 layers not supported");
1580         else if (item_flags & l4m)
1581                 return rte_flow_error_set(error, EINVAL,
1582                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1583                                           "L3 cannot follow an L4 layer.");
1584         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1585                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1586                 return rte_flow_error_set(error, EINVAL,
1587                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1588                                           "L3 cannot follow an NVGRE layer.");
1589         if (!mask)
1590                 mask = &rte_flow_item_ipv4_mask;
1591         else if (mask->hdr.next_proto_id != 0 &&
1592                  mask->hdr.next_proto_id != 0xff)
1593                 return rte_flow_error_set(error, EINVAL,
1594                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1595                                           "partial mask is not supported"
1596                                           " for protocol");
1597         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1598                                         acc_mask ? (const uint8_t *)acc_mask
1599                                                  : (const uint8_t *)&nic_mask,
1600                                         sizeof(struct rte_flow_item_ipv4),
1601                                         error);
1602         if (ret < 0)
1603                 return ret;
1604         return 0;
1605 }
1606
1607 /**
1608  * Validate IPV6 item.
1609  *
1610  * @param[in] item
1611  *   Item specification.
1612  * @param[in] item_flags
1613  *   Bit-fields that holds the items detected until now.
1614  * @param[in] acc_mask
1615  *   Acceptable mask, if NULL default internal default mask
1616  *   will be used to check whether item fields are supported.
1617  * @param[out] error
1618  *   Pointer to error structure.
1619  *
1620  * @return
1621  *   0 on success, a negative errno value otherwise and rte_errno is set.
1622  */
1623 int
1624 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1625                              uint64_t item_flags,
1626                              uint64_t last_item,
1627                              uint16_t ether_type,
1628                              const struct rte_flow_item_ipv6 *acc_mask,
1629                              struct rte_flow_error *error)
1630 {
1631         const struct rte_flow_item_ipv6 *mask = item->mask;
1632         const struct rte_flow_item_ipv6 *spec = item->spec;
1633         const struct rte_flow_item_ipv6 nic_mask = {
1634                 .hdr = {
1635                         .src_addr =
1636                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1637                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1638                         .dst_addr =
1639                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1640                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1641                         .vtc_flow = RTE_BE32(0xffffffff),
1642                         .proto = 0xff,
1643                 },
1644         };
1645         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1646         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1647                                       MLX5_FLOW_LAYER_OUTER_L3;
1648         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1649                                       MLX5_FLOW_LAYER_OUTER_L4;
1650         int ret;
1651         uint8_t next_proto = 0xFF;
1652         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1653                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1654                                   MLX5_FLOW_LAYER_INNER_VLAN);
1655
1656         if ((last_item & l2_vlan) && ether_type &&
1657             ether_type != RTE_ETHER_TYPE_IPV6)
1658                 return rte_flow_error_set(error, EINVAL,
1659                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1660                                           "IPv6 cannot follow L2/VLAN layer "
1661                                           "which ether type is not IPv6");
1662         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
1663                 if (mask && spec)
1664                         next_proto = mask->hdr.proto & spec->hdr.proto;
1665                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1666                         return rte_flow_error_set(error, EINVAL,
1667                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1668                                                   item,
1669                                                   "multiple tunnel "
1670                                                   "not supported");
1671         }
1672         if (item_flags & MLX5_FLOW_LAYER_IPIP)
1673                 return rte_flow_error_set(error, EINVAL,
1674                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1675                                           "wrong tunnel type - IPv4 specified "
1676                                           "but IPv6 item provided");
1677         if (item_flags & l3m)
1678                 return rte_flow_error_set(error, ENOTSUP,
1679                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1680                                           "multiple L3 layers not supported");
1681         else if (item_flags & l4m)
1682                 return rte_flow_error_set(error, EINVAL,
1683                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1684                                           "L3 cannot follow an L4 layer.");
1685         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1686                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1687                 return rte_flow_error_set(error, EINVAL,
1688                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1689                                           "L3 cannot follow an NVGRE layer.");
1690         if (!mask)
1691                 mask = &rte_flow_item_ipv6_mask;
1692         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1693                                         acc_mask ? (const uint8_t *)acc_mask
1694                                                  : (const uint8_t *)&nic_mask,
1695                                         sizeof(struct rte_flow_item_ipv6),
1696                                         error);
1697         if (ret < 0)
1698                 return ret;
1699         return 0;
1700 }
1701
1702 /**
1703  * Validate UDP item.
1704  *
1705  * @param[in] item
1706  *   Item specification.
1707  * @param[in] item_flags
1708  *   Bit-fields that holds the items detected until now.
1709  * @param[in] target_protocol
1710  *   The next protocol in the previous item.
1711  * @param[in] flow_mask
1712  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1713  * @param[out] error
1714  *   Pointer to error structure.
1715  *
1716  * @return
1717  *   0 on success, a negative errno value otherwise and rte_errno is set.
1718  */
1719 int
1720 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1721                             uint64_t item_flags,
1722                             uint8_t target_protocol,
1723                             struct rte_flow_error *error)
1724 {
1725         const struct rte_flow_item_udp *mask = item->mask;
1726         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1727         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1728                                       MLX5_FLOW_LAYER_OUTER_L3;
1729         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1730                                       MLX5_FLOW_LAYER_OUTER_L4;
1731         int ret;
1732
1733         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1734                 return rte_flow_error_set(error, EINVAL,
1735                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1736                                           "protocol filtering not compatible"
1737                                           " with UDP layer");
1738         if (!(item_flags & l3m))
1739                 return rte_flow_error_set(error, EINVAL,
1740                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1741                                           "L3 is mandatory to filter on L4");
1742         if (item_flags & l4m)
1743                 return rte_flow_error_set(error, EINVAL,
1744                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1745                                           "multiple L4 layers not supported");
1746         if (!mask)
1747                 mask = &rte_flow_item_udp_mask;
1748         ret = mlx5_flow_item_acceptable
1749                 (item, (const uint8_t *)mask,
1750                  (const uint8_t *)&rte_flow_item_udp_mask,
1751                  sizeof(struct rte_flow_item_udp), error);
1752         if (ret < 0)
1753                 return ret;
1754         return 0;
1755 }
1756
1757 /**
1758  * Validate TCP item.
1759  *
1760  * @param[in] item
1761  *   Item specification.
1762  * @param[in] item_flags
1763  *   Bit-fields that holds the items detected until now.
1764  * @param[in] target_protocol
1765  *   The next protocol in the previous item.
1766  * @param[out] error
1767  *   Pointer to error structure.
1768  *
1769  * @return
1770  *   0 on success, a negative errno value otherwise and rte_errno is set.
1771  */
1772 int
1773 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1774                             uint64_t item_flags,
1775                             uint8_t target_protocol,
1776                             const struct rte_flow_item_tcp *flow_mask,
1777                             struct rte_flow_error *error)
1778 {
1779         const struct rte_flow_item_tcp *mask = item->mask;
1780         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1781         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1782                                       MLX5_FLOW_LAYER_OUTER_L3;
1783         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1784                                       MLX5_FLOW_LAYER_OUTER_L4;
1785         int ret;
1786
1787         MLX5_ASSERT(flow_mask);
1788         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1789                 return rte_flow_error_set(error, EINVAL,
1790                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1791                                           "protocol filtering not compatible"
1792                                           " with TCP layer");
1793         if (!(item_flags & l3m))
1794                 return rte_flow_error_set(error, EINVAL,
1795                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1796                                           "L3 is mandatory to filter on L4");
1797         if (item_flags & l4m)
1798                 return rte_flow_error_set(error, EINVAL,
1799                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1800                                           "multiple L4 layers not supported");
1801         if (!mask)
1802                 mask = &rte_flow_item_tcp_mask;
1803         ret = mlx5_flow_item_acceptable
1804                 (item, (const uint8_t *)mask,
1805                  (const uint8_t *)flow_mask,
1806                  sizeof(struct rte_flow_item_tcp), error);
1807         if (ret < 0)
1808                 return ret;
1809         return 0;
1810 }
1811
1812 /**
1813  * Validate VXLAN item.
1814  *
1815  * @param[in] item
1816  *   Item specification.
1817  * @param[in] item_flags
1818  *   Bit-fields that holds the items detected until now.
1819  * @param[in] target_protocol
1820  *   The next protocol in the previous item.
1821  * @param[out] error
1822  *   Pointer to error structure.
1823  *
1824  * @return
1825  *   0 on success, a negative errno value otherwise and rte_errno is set.
1826  */
1827 int
1828 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1829                               uint64_t item_flags,
1830                               struct rte_flow_error *error)
1831 {
1832         const struct rte_flow_item_vxlan *spec = item->spec;
1833         const struct rte_flow_item_vxlan *mask = item->mask;
1834         int ret;
1835         union vni {
1836                 uint32_t vlan_id;
1837                 uint8_t vni[4];
1838         } id = { .vlan_id = 0, };
1839         uint32_t vlan_id = 0;
1840
1841
1842         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1843                 return rte_flow_error_set(error, ENOTSUP,
1844                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1845                                           "multiple tunnel layers not"
1846                                           " supported");
1847         /*
1848          * Verify only UDPv4 is present as defined in
1849          * https://tools.ietf.org/html/rfc7348
1850          */
1851         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1852                 return rte_flow_error_set(error, EINVAL,
1853                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1854                                           "no outer UDP layer found");
1855         if (!mask)
1856                 mask = &rte_flow_item_vxlan_mask;
1857         ret = mlx5_flow_item_acceptable
1858                 (item, (const uint8_t *)mask,
1859                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1860                  sizeof(struct rte_flow_item_vxlan),
1861                  error);
1862         if (ret < 0)
1863                 return ret;
1864         if (spec) {
1865                 memcpy(&id.vni[1], spec->vni, 3);
1866                 vlan_id = id.vlan_id;
1867                 memcpy(&id.vni[1], mask->vni, 3);
1868                 vlan_id &= id.vlan_id;
1869         }
1870         /*
1871          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1872          * only this layer is defined in the Verbs specification it is
1873          * interpreted as wildcard and all packets will match this
1874          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1875          * udp), all packets matching the layers before will also
1876          * match this rule.  To avoid such situation, VNI 0 is
1877          * currently refused.
1878          */
1879         if (!vlan_id)
1880                 return rte_flow_error_set(error, ENOTSUP,
1881                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1882                                           "VXLAN vni cannot be 0");
1883         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1884                 return rte_flow_error_set(error, ENOTSUP,
1885                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1886                                           "VXLAN tunnel must be fully defined");
1887         return 0;
1888 }
1889
1890 /**
1891  * Validate VXLAN_GPE item.
1892  *
1893  * @param[in] item
1894  *   Item specification.
1895  * @param[in] item_flags
1896  *   Bit-fields that holds the items detected until now.
1897  * @param[in] priv
1898  *   Pointer to the private data structure.
1899  * @param[in] target_protocol
1900  *   The next protocol in the previous item.
1901  * @param[out] error
1902  *   Pointer to error structure.
1903  *
1904  * @return
1905  *   0 on success, a negative errno value otherwise and rte_errno is set.
1906  */
1907 int
1908 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1909                                   uint64_t item_flags,
1910                                   struct rte_eth_dev *dev,
1911                                   struct rte_flow_error *error)
1912 {
1913         struct mlx5_priv *priv = dev->data->dev_private;
1914         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1915         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1916         int ret;
1917         union vni {
1918                 uint32_t vlan_id;
1919                 uint8_t vni[4];
1920         } id = { .vlan_id = 0, };
1921         uint32_t vlan_id = 0;
1922
1923         if (!priv->config.l3_vxlan_en)
1924                 return rte_flow_error_set(error, ENOTSUP,
1925                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1926                                           "L3 VXLAN is not enabled by device"
1927                                           " parameter and/or not configured in"
1928                                           " firmware");
1929         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1930                 return rte_flow_error_set(error, ENOTSUP,
1931                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1932                                           "multiple tunnel layers not"
1933                                           " supported");
1934         /*
1935          * Verify only UDPv4 is present as defined in
1936          * https://tools.ietf.org/html/rfc7348
1937          */
1938         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1939                 return rte_flow_error_set(error, EINVAL,
1940                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1941                                           "no outer UDP layer found");
1942         if (!mask)
1943                 mask = &rte_flow_item_vxlan_gpe_mask;
1944         ret = mlx5_flow_item_acceptable
1945                 (item, (const uint8_t *)mask,
1946                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1947                  sizeof(struct rte_flow_item_vxlan_gpe),
1948                  error);
1949         if (ret < 0)
1950                 return ret;
1951         if (spec) {
1952                 if (spec->protocol)
1953                         return rte_flow_error_set(error, ENOTSUP,
1954                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1955                                                   item,
1956                                                   "VxLAN-GPE protocol"
1957                                                   " not supported");
1958                 memcpy(&id.vni[1], spec->vni, 3);
1959                 vlan_id = id.vlan_id;
1960                 memcpy(&id.vni[1], mask->vni, 3);
1961                 vlan_id &= id.vlan_id;
1962         }
1963         /*
1964          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1965          * layer is defined in the Verbs specification it is interpreted as
1966          * wildcard and all packets will match this rule, if it follows a full
1967          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1968          * before will also match this rule.  To avoid such situation, VNI 0
1969          * is currently refused.
1970          */
1971         if (!vlan_id)
1972                 return rte_flow_error_set(error, ENOTSUP,
1973                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1974                                           "VXLAN-GPE vni cannot be 0");
1975         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1976                 return rte_flow_error_set(error, ENOTSUP,
1977                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1978                                           "VXLAN-GPE tunnel must be fully"
1979                                           " defined");
1980         return 0;
1981 }
1982 /**
1983  * Validate GRE Key item.
1984  *
1985  * @param[in] item
1986  *   Item specification.
1987  * @param[in] item_flags
1988  *   Bit flags to mark detected items.
1989  * @param[in] gre_item
1990  *   Pointer to gre_item
1991  * @param[out] error
1992  *   Pointer to error structure.
1993  *
1994  * @return
1995  *   0 on success, a negative errno value otherwise and rte_errno is set.
1996  */
1997 int
1998 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
1999                                 uint64_t item_flags,
2000                                 const struct rte_flow_item *gre_item,
2001                                 struct rte_flow_error *error)
2002 {
2003         const rte_be32_t *mask = item->mask;
2004         int ret = 0;
2005         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2006         const struct rte_flow_item_gre *gre_spec;
2007         const struct rte_flow_item_gre *gre_mask;
2008
2009         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2010                 return rte_flow_error_set(error, ENOTSUP,
2011                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2012                                           "Multiple GRE key not support");
2013         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2014                 return rte_flow_error_set(error, ENOTSUP,
2015                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2016                                           "No preceding GRE header");
2017         if (item_flags & MLX5_FLOW_LAYER_INNER)
2018                 return rte_flow_error_set(error, ENOTSUP,
2019                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2020                                           "GRE key following a wrong item");
2021         gre_mask = gre_item->mask;
2022         if (!gre_mask)
2023                 gre_mask = &rte_flow_item_gre_mask;
2024         gre_spec = gre_item->spec;
2025         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2026                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2027                 return rte_flow_error_set(error, EINVAL,
2028                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2029                                           "Key bit must be on");
2030
2031         if (!mask)
2032                 mask = &gre_key_default_mask;
2033         ret = mlx5_flow_item_acceptable
2034                 (item, (const uint8_t *)mask,
2035                  (const uint8_t *)&gre_key_default_mask,
2036                  sizeof(rte_be32_t), error);
2037         return ret;
2038 }
2039
2040 /**
2041  * Validate GRE item.
2042  *
2043  * @param[in] item
2044  *   Item specification.
2045  * @param[in] item_flags
2046  *   Bit flags to mark detected items.
2047  * @param[in] target_protocol
2048  *   The next protocol in the previous item.
2049  * @param[out] error
2050  *   Pointer to error structure.
2051  *
2052  * @return
2053  *   0 on success, a negative errno value otherwise and rte_errno is set.
2054  */
2055 int
2056 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2057                             uint64_t item_flags,
2058                             uint8_t target_protocol,
2059                             struct rte_flow_error *error)
2060 {
2061         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2062         const struct rte_flow_item_gre *mask = item->mask;
2063         int ret;
2064         const struct rte_flow_item_gre nic_mask = {
2065                 .c_rsvd0_ver = RTE_BE16(0xB000),
2066                 .protocol = RTE_BE16(UINT16_MAX),
2067         };
2068
2069         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2070                 return rte_flow_error_set(error, EINVAL,
2071                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2072                                           "protocol filtering not compatible"
2073                                           " with this GRE layer");
2074         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2075                 return rte_flow_error_set(error, ENOTSUP,
2076                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2077                                           "multiple tunnel layers not"
2078                                           " supported");
2079         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2080                 return rte_flow_error_set(error, ENOTSUP,
2081                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2082                                           "L3 Layer is missing");
2083         if (!mask)
2084                 mask = &rte_flow_item_gre_mask;
2085         ret = mlx5_flow_item_acceptable
2086                 (item, (const uint8_t *)mask,
2087                  (const uint8_t *)&nic_mask,
2088                  sizeof(struct rte_flow_item_gre), error);
2089         if (ret < 0)
2090                 return ret;
2091 #ifndef HAVE_MLX5DV_DR
2092 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2093         if (spec && (spec->protocol & mask->protocol))
2094                 return rte_flow_error_set(error, ENOTSUP,
2095                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2096                                           "without MPLS support the"
2097                                           " specification cannot be used for"
2098                                           " filtering");
2099 #endif
2100 #endif
2101         return 0;
2102 }
2103
2104 /**
2105  * Validate Geneve item.
2106  *
2107  * @param[in] item
2108  *   Item specification.
2109  * @param[in] itemFlags
2110  *   Bit-fields that holds the items detected until now.
2111  * @param[in] enPriv
2112  *   Pointer to the private data structure.
2113  * @param[out] error
2114  *   Pointer to error structure.
2115  *
2116  * @return
2117  *   0 on success, a negative errno value otherwise and rte_errno is set.
2118  */
2119
2120 int
2121 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2122                                uint64_t item_flags,
2123                                struct rte_eth_dev *dev,
2124                                struct rte_flow_error *error)
2125 {
2126         struct mlx5_priv *priv = dev->data->dev_private;
2127         const struct rte_flow_item_geneve *spec = item->spec;
2128         const struct rte_flow_item_geneve *mask = item->mask;
2129         int ret;
2130         uint16_t gbhdr;
2131         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2132                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2133         const struct rte_flow_item_geneve nic_mask = {
2134                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2135                 .vni = "\xff\xff\xff",
2136                 .protocol = RTE_BE16(UINT16_MAX),
2137         };
2138
2139         if (!priv->config.hca_attr.tunnel_stateless_geneve_rx)
2140                 return rte_flow_error_set(error, ENOTSUP,
2141                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2142                                           "L3 Geneve is not enabled by device"
2143                                           " parameter and/or not configured in"
2144                                           " firmware");
2145         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2146                 return rte_flow_error_set(error, ENOTSUP,
2147                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2148                                           "multiple tunnel layers not"
2149                                           " supported");
2150         /*
2151          * Verify only UDPv4 is present as defined in
2152          * https://tools.ietf.org/html/rfc7348
2153          */
2154         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2155                 return rte_flow_error_set(error, EINVAL,
2156                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2157                                           "no outer UDP layer found");
2158         if (!mask)
2159                 mask = &rte_flow_item_geneve_mask;
2160         ret = mlx5_flow_item_acceptable
2161                                   (item, (const uint8_t *)mask,
2162                                    (const uint8_t *)&nic_mask,
2163                                    sizeof(struct rte_flow_item_geneve), error);
2164         if (ret)
2165                 return ret;
2166         if (spec) {
2167                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2168                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2169                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2170                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2171                         return rte_flow_error_set(error, ENOTSUP,
2172                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2173                                                   item,
2174                                                   "Geneve protocol unsupported"
2175                                                   " fields are being used");
2176                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2177                         return rte_flow_error_set
2178                                         (error, ENOTSUP,
2179                                          RTE_FLOW_ERROR_TYPE_ITEM,
2180                                          item,
2181                                          "Unsupported Geneve options length");
2182         }
2183         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2184                 return rte_flow_error_set
2185                                     (error, ENOTSUP,
2186                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2187                                      "Geneve tunnel must be fully defined");
2188         return 0;
2189 }
2190
2191 /**
2192  * Validate MPLS item.
2193  *
2194  * @param[in] dev
2195  *   Pointer to the rte_eth_dev structure.
2196  * @param[in] item
2197  *   Item specification.
2198  * @param[in] item_flags
2199  *   Bit-fields that holds the items detected until now.
2200  * @param[in] prev_layer
2201  *   The protocol layer indicated in previous item.
2202  * @param[out] error
2203  *   Pointer to error structure.
2204  *
2205  * @return
2206  *   0 on success, a negative errno value otherwise and rte_errno is set.
2207  */
2208 int
2209 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2210                              const struct rte_flow_item *item __rte_unused,
2211                              uint64_t item_flags __rte_unused,
2212                              uint64_t prev_layer __rte_unused,
2213                              struct rte_flow_error *error)
2214 {
2215 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2216         const struct rte_flow_item_mpls *mask = item->mask;
2217         struct mlx5_priv *priv = dev->data->dev_private;
2218         int ret;
2219
2220         if (!priv->config.mpls_en)
2221                 return rte_flow_error_set(error, ENOTSUP,
2222                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2223                                           "MPLS not supported or"
2224                                           " disabled in firmware"
2225                                           " configuration.");
2226         /* MPLS over IP, UDP, GRE is allowed */
2227         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2228                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2229                             MLX5_FLOW_LAYER_GRE)))
2230                 return rte_flow_error_set(error, EINVAL,
2231                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2232                                           "protocol filtering not compatible"
2233                                           " with MPLS layer");
2234         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2235         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2236             !(item_flags & MLX5_FLOW_LAYER_GRE))
2237                 return rte_flow_error_set(error, ENOTSUP,
2238                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2239                                           "multiple tunnel layers not"
2240                                           " supported");
2241         if (!mask)
2242                 mask = &rte_flow_item_mpls_mask;
2243         ret = mlx5_flow_item_acceptable
2244                 (item, (const uint8_t *)mask,
2245                  (const uint8_t *)&rte_flow_item_mpls_mask,
2246                  sizeof(struct rte_flow_item_mpls), error);
2247         if (ret < 0)
2248                 return ret;
2249         return 0;
2250 #endif
2251         return rte_flow_error_set(error, ENOTSUP,
2252                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2253                                   "MPLS is not supported by Verbs, please"
2254                                   " update.");
2255 }
2256
2257 /**
2258  * Validate NVGRE item.
2259  *
2260  * @param[in] item
2261  *   Item specification.
2262  * @param[in] item_flags
2263  *   Bit flags to mark detected items.
2264  * @param[in] target_protocol
2265  *   The next protocol in the previous item.
2266  * @param[out] error
2267  *   Pointer to error structure.
2268  *
2269  * @return
2270  *   0 on success, a negative errno value otherwise and rte_errno is set.
2271  */
2272 int
2273 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2274                               uint64_t item_flags,
2275                               uint8_t target_protocol,
2276                               struct rte_flow_error *error)
2277 {
2278         const struct rte_flow_item_nvgre *mask = item->mask;
2279         int ret;
2280
2281         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2282                 return rte_flow_error_set(error, EINVAL,
2283                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2284                                           "protocol filtering not compatible"
2285                                           " with this GRE layer");
2286         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2287                 return rte_flow_error_set(error, ENOTSUP,
2288                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2289                                           "multiple tunnel layers not"
2290                                           " supported");
2291         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2292                 return rte_flow_error_set(error, ENOTSUP,
2293                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2294                                           "L3 Layer is missing");
2295         if (!mask)
2296                 mask = &rte_flow_item_nvgre_mask;
2297         ret = mlx5_flow_item_acceptable
2298                 (item, (const uint8_t *)mask,
2299                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2300                  sizeof(struct rte_flow_item_nvgre), error);
2301         if (ret < 0)
2302                 return ret;
2303         return 0;
2304 }
2305
2306 /* Allocate unique ID for the split Q/RSS subflows. */
2307 static uint32_t
2308 flow_qrss_get_id(struct rte_eth_dev *dev)
2309 {
2310         struct mlx5_priv *priv = dev->data->dev_private;
2311         uint32_t qrss_id, ret;
2312
2313         ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
2314         if (ret)
2315                 return 0;
2316         MLX5_ASSERT(qrss_id);
2317         return qrss_id;
2318 }
2319
2320 /* Free unique ID for the split Q/RSS subflows. */
2321 static void
2322 flow_qrss_free_id(struct rte_eth_dev *dev,  uint32_t qrss_id)
2323 {
2324         struct mlx5_priv *priv = dev->data->dev_private;
2325
2326         if (qrss_id)
2327                 mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
2328 }
2329
2330 /**
2331  * Release resource related QUEUE/RSS action split.
2332  *
2333  * @param dev
2334  *   Pointer to Ethernet device.
2335  * @param flow
2336  *   Flow to release id's from.
2337  */
2338 static void
2339 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
2340                              struct rte_flow *flow)
2341 {
2342         struct mlx5_flow *dev_flow;
2343
2344         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
2345                 if (dev_flow->qrss_id)
2346                         flow_qrss_free_id(dev, dev_flow->qrss_id);
2347 }
2348
2349 static int
2350 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
2351                    const struct rte_flow_attr *attr __rte_unused,
2352                    const struct rte_flow_item items[] __rte_unused,
2353                    const struct rte_flow_action actions[] __rte_unused,
2354                    bool external __rte_unused,
2355                    struct rte_flow_error *error)
2356 {
2357         return rte_flow_error_set(error, ENOTSUP,
2358                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2359 }
2360
2361 static struct mlx5_flow *
2362 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
2363                   const struct rte_flow_item items[] __rte_unused,
2364                   const struct rte_flow_action actions[] __rte_unused,
2365                   struct rte_flow_error *error)
2366 {
2367         rte_flow_error_set(error, ENOTSUP,
2368                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2369         return NULL;
2370 }
2371
2372 static int
2373 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
2374                     struct mlx5_flow *dev_flow __rte_unused,
2375                     const struct rte_flow_attr *attr __rte_unused,
2376                     const struct rte_flow_item items[] __rte_unused,
2377                     const struct rte_flow_action actions[] __rte_unused,
2378                     struct rte_flow_error *error)
2379 {
2380         return rte_flow_error_set(error, ENOTSUP,
2381                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2382 }
2383
2384 static int
2385 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
2386                 struct rte_flow *flow __rte_unused,
2387                 struct rte_flow_error *error)
2388 {
2389         return rte_flow_error_set(error, ENOTSUP,
2390                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2391 }
2392
2393 static void
2394 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
2395                  struct rte_flow *flow __rte_unused)
2396 {
2397 }
2398
2399 static void
2400 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
2401                   struct rte_flow *flow __rte_unused)
2402 {
2403 }
2404
2405 static int
2406 flow_null_query(struct rte_eth_dev *dev __rte_unused,
2407                 struct rte_flow *flow __rte_unused,
2408                 const struct rte_flow_action *actions __rte_unused,
2409                 void *data __rte_unused,
2410                 struct rte_flow_error *error)
2411 {
2412         return rte_flow_error_set(error, ENOTSUP,
2413                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2414 }
2415
2416 /* Void driver to protect from null pointer reference. */
2417 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
2418         .validate = flow_null_validate,
2419         .prepare = flow_null_prepare,
2420         .translate = flow_null_translate,
2421         .apply = flow_null_apply,
2422         .remove = flow_null_remove,
2423         .destroy = flow_null_destroy,
2424         .query = flow_null_query,
2425 };
2426
2427 /**
2428  * Select flow driver type according to flow attributes and device
2429  * configuration.
2430  *
2431  * @param[in] dev
2432  *   Pointer to the dev structure.
2433  * @param[in] attr
2434  *   Pointer to the flow attributes.
2435  *
2436  * @return
2437  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
2438  */
2439 static enum mlx5_flow_drv_type
2440 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
2441 {
2442         struct mlx5_priv *priv = dev->data->dev_private;
2443         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
2444
2445         if (attr->transfer && priv->config.dv_esw_en)
2446                 type = MLX5_FLOW_TYPE_DV;
2447         if (!attr->transfer)
2448                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
2449                                                  MLX5_FLOW_TYPE_VERBS;
2450         return type;
2451 }
2452
2453 #define flow_get_drv_ops(type) flow_drv_ops[type]
2454
2455 /**
2456  * Flow driver validation API. This abstracts calling driver specific functions.
2457  * The type of flow driver is determined according to flow attributes.
2458  *
2459  * @param[in] dev
2460  *   Pointer to the dev structure.
2461  * @param[in] attr
2462  *   Pointer to the flow attributes.
2463  * @param[in] items
2464  *   Pointer to the list of items.
2465  * @param[in] actions
2466  *   Pointer to the list of actions.
2467  * @param[in] external
2468  *   This flow rule is created by request external to PMD.
2469  * @param[out] error
2470  *   Pointer to the error structure.
2471  *
2472  * @return
2473  *   0 on success, a negative errno value otherwise and rte_errno is set.
2474  */
2475 static inline int
2476 flow_drv_validate(struct rte_eth_dev *dev,
2477                   const struct rte_flow_attr *attr,
2478                   const struct rte_flow_item items[],
2479                   const struct rte_flow_action actions[],
2480                   bool external, struct rte_flow_error *error)
2481 {
2482         const struct mlx5_flow_driver_ops *fops;
2483         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
2484
2485         fops = flow_get_drv_ops(type);
2486         return fops->validate(dev, attr, items, actions, external, error);
2487 }
2488
2489 /**
2490  * Flow driver preparation API. This abstracts calling driver specific
2491  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2492  * calculates the size of memory required for device flow, allocates the memory,
2493  * initializes the device flow and returns the pointer.
2494  *
2495  * @note
2496  *   This function initializes device flow structure such as dv or verbs in
2497  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2498  *   rest. For example, adding returning device flow to flow->dev_flow list and
2499  *   setting backward reference to the flow should be done out of this function.
2500  *   layers field is not filled either.
2501  *
2502  * @param[in] attr
2503  *   Pointer to the flow attributes.
2504  * @param[in] items
2505  *   Pointer to the list of items.
2506  * @param[in] actions
2507  *   Pointer to the list of actions.
2508  * @param[out] error
2509  *   Pointer to the error structure.
2510  *
2511  * @return
2512  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2513  */
2514 static inline struct mlx5_flow *
2515 flow_drv_prepare(const struct rte_flow *flow,
2516                  const struct rte_flow_attr *attr,
2517                  const struct rte_flow_item items[],
2518                  const struct rte_flow_action actions[],
2519                  struct rte_flow_error *error)
2520 {
2521         const struct mlx5_flow_driver_ops *fops;
2522         enum mlx5_flow_drv_type type = flow->drv_type;
2523
2524         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2525         fops = flow_get_drv_ops(type);
2526         return fops->prepare(attr, items, actions, error);
2527 }
2528
2529 /**
2530  * Flow driver translation API. This abstracts calling driver specific
2531  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2532  * translates a generic flow into a driver flow. flow_drv_prepare() must
2533  * precede.
2534  *
2535  * @note
2536  *   dev_flow->layers could be filled as a result of parsing during translation
2537  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2538  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2539  *   flow->actions could be overwritten even though all the expanded dev_flows
2540  *   have the same actions.
2541  *
2542  * @param[in] dev
2543  *   Pointer to the rte dev structure.
2544  * @param[in, out] dev_flow
2545  *   Pointer to the mlx5 flow.
2546  * @param[in] attr
2547  *   Pointer to the flow attributes.
2548  * @param[in] items
2549  *   Pointer to the list of items.
2550  * @param[in] actions
2551  *   Pointer to the list of actions.
2552  * @param[out] error
2553  *   Pointer to the error structure.
2554  *
2555  * @return
2556  *   0 on success, a negative errno value otherwise and rte_errno is set.
2557  */
2558 static inline int
2559 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2560                    const struct rte_flow_attr *attr,
2561                    const struct rte_flow_item items[],
2562                    const struct rte_flow_action actions[],
2563                    struct rte_flow_error *error)
2564 {
2565         const struct mlx5_flow_driver_ops *fops;
2566         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2567
2568         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2569         fops = flow_get_drv_ops(type);
2570         return fops->translate(dev, dev_flow, attr, items, actions, error);
2571 }
2572
2573 /**
2574  * Flow driver apply API. This abstracts calling driver specific functions.
2575  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2576  * translated driver flows on to device. flow_drv_translate() must precede.
2577  *
2578  * @param[in] dev
2579  *   Pointer to Ethernet device structure.
2580  * @param[in, out] flow
2581  *   Pointer to flow structure.
2582  * @param[out] error
2583  *   Pointer to error structure.
2584  *
2585  * @return
2586  *   0 on success, a negative errno value otherwise and rte_errno is set.
2587  */
2588 static inline int
2589 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2590                struct rte_flow_error *error)
2591 {
2592         const struct mlx5_flow_driver_ops *fops;
2593         enum mlx5_flow_drv_type type = 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->apply(dev, flow, error);
2598 }
2599
2600 /**
2601  * Flow driver remove API. This abstracts calling driver specific functions.
2602  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2603  * on device. All the resources of the flow should be freed by calling
2604  * flow_drv_destroy().
2605  *
2606  * @param[in] dev
2607  *   Pointer to Ethernet device.
2608  * @param[in, out] flow
2609  *   Pointer to flow structure.
2610  */
2611 static inline void
2612 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2613 {
2614         const struct mlx5_flow_driver_ops *fops;
2615         enum mlx5_flow_drv_type type = flow->drv_type;
2616
2617         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2618         fops = flow_get_drv_ops(type);
2619         fops->remove(dev, flow);
2620 }
2621
2622 /**
2623  * Flow driver destroy API. This abstracts calling driver specific functions.
2624  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2625  * on device and releases resources of the flow.
2626  *
2627  * @param[in] dev
2628  *   Pointer to Ethernet device.
2629  * @param[in, out] flow
2630  *   Pointer to flow structure.
2631  */
2632 static inline void
2633 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2634 {
2635         const struct mlx5_flow_driver_ops *fops;
2636         enum mlx5_flow_drv_type type = flow->drv_type;
2637
2638         flow_mreg_split_qrss_release(dev, flow);
2639         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2640         fops = flow_get_drv_ops(type);
2641         fops->destroy(dev, flow);
2642 }
2643
2644 /**
2645  * Validate a flow supported by the NIC.
2646  *
2647  * @see rte_flow_validate()
2648  * @see rte_flow_ops
2649  */
2650 int
2651 mlx5_flow_validate(struct rte_eth_dev *dev,
2652                    const struct rte_flow_attr *attr,
2653                    const struct rte_flow_item items[],
2654                    const struct rte_flow_action actions[],
2655                    struct rte_flow_error *error)
2656 {
2657         int ret;
2658
2659         ret = flow_drv_validate(dev, attr, items, actions, true, error);
2660         if (ret < 0)
2661                 return ret;
2662         return 0;
2663 }
2664
2665 /**
2666  * Get RSS action from the action list.
2667  *
2668  * @param[in] actions
2669  *   Pointer to the list of actions.
2670  *
2671  * @return
2672  *   Pointer to the RSS action if exist, else return NULL.
2673  */
2674 static const struct rte_flow_action_rss*
2675 flow_get_rss_action(const struct rte_flow_action actions[])
2676 {
2677         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2678                 switch (actions->type) {
2679                 case RTE_FLOW_ACTION_TYPE_RSS:
2680                         return (const struct rte_flow_action_rss *)
2681                                actions->conf;
2682                 default:
2683                         break;
2684                 }
2685         }
2686         return NULL;
2687 }
2688
2689 static unsigned int
2690 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2691 {
2692         const struct rte_flow_item *item;
2693         unsigned int has_vlan = 0;
2694
2695         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2696                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2697                         has_vlan = 1;
2698                         break;
2699                 }
2700         }
2701         if (has_vlan)
2702                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2703                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2704         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2705                                MLX5_EXPANSION_ROOT_OUTER;
2706 }
2707
2708 /**
2709  *  Get layer flags from the prefix flow.
2710  *
2711  *  Some flows may be split to several subflows, the prefix subflow gets the
2712  *  match items and the suffix sub flow gets the actions.
2713  *  Some actions need the user defined match item flags to get the detail for
2714  *  the action.
2715  *  This function helps the suffix flow to get the item layer flags from prefix
2716  *  subflow.
2717  *
2718  * @param[in] dev_flow
2719  *   Pointer the created preifx subflow.
2720  *
2721  * @return
2722  *   The layers get from prefix subflow.
2723  */
2724 static inline uint64_t
2725 flow_get_prefix_layer_flags(struct mlx5_flow *dev_flow)
2726 {
2727         uint64_t layers = 0;
2728
2729         /* If no decap actions, use the layers directly. */
2730         if (!(dev_flow->actions & MLX5_FLOW_ACTION_DECAP))
2731                 return dev_flow->layers;
2732         /* Convert L3 layers with decap action. */
2733         if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L3_IPV4)
2734                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
2735         else if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L3_IPV6)
2736                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
2737         /* Convert L4 layers with decap action.  */
2738         if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L4_TCP)
2739                 layers |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
2740         else if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L4_UDP)
2741                 layers |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
2742         return layers;
2743 }
2744
2745 /**
2746  * Get metadata split action information.
2747  *
2748  * @param[in] actions
2749  *   Pointer to the list of actions.
2750  * @param[out] qrss
2751  *   Pointer to the return pointer.
2752  * @param[out] qrss_type
2753  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
2754  *   if no QUEUE/RSS is found.
2755  * @param[out] encap_idx
2756  *   Pointer to the index of the encap action if exists, otherwise the last
2757  *   action index.
2758  *
2759  * @return
2760  *   Total number of actions.
2761  */
2762 static int
2763 flow_parse_metadata_split_actions_info(const struct rte_flow_action actions[],
2764                                        const struct rte_flow_action **qrss,
2765                                        int *encap_idx)
2766 {
2767         const struct rte_flow_action_raw_encap *raw_encap;
2768         int actions_n = 0;
2769         int raw_decap_idx = -1;
2770
2771         *encap_idx = -1;
2772         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2773                 switch (actions->type) {
2774                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2775                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2776                         *encap_idx = actions_n;
2777                         break;
2778                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
2779                         raw_decap_idx = actions_n;
2780                         break;
2781                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2782                         raw_encap = actions->conf;
2783                         if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
2784                                 *encap_idx = raw_decap_idx != -1 ?
2785                                                       raw_decap_idx : actions_n;
2786                         break;
2787                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2788                 case RTE_FLOW_ACTION_TYPE_RSS:
2789                         *qrss = actions;
2790                         break;
2791                 default:
2792                         break;
2793                 }
2794                 actions_n++;
2795         }
2796         if (*encap_idx == -1)
2797                 *encap_idx = actions_n;
2798         /* Count RTE_FLOW_ACTION_TYPE_END. */
2799         return actions_n + 1;
2800 }
2801
2802 /**
2803  * Check meter action from the action list.
2804  *
2805  * @param[in] actions
2806  *   Pointer to the list of actions.
2807  * @param[out] mtr
2808  *   Pointer to the meter exist flag.
2809  *
2810  * @return
2811  *   Total number of actions.
2812  */
2813 static int
2814 flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
2815 {
2816         int actions_n = 0;
2817
2818         MLX5_ASSERT(mtr);
2819         *mtr = 0;
2820         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2821                 switch (actions->type) {
2822                 case RTE_FLOW_ACTION_TYPE_METER:
2823                         *mtr = 1;
2824                         break;
2825                 default:
2826                         break;
2827                 }
2828                 actions_n++;
2829         }
2830         /* Count RTE_FLOW_ACTION_TYPE_END. */
2831         return actions_n + 1;
2832 }
2833
2834 /**
2835  * Check if the flow should be splited due to hairpin.
2836  * The reason for the split is that in current HW we can't
2837  * support encap on Rx, so if a flow have encap we move it
2838  * to Tx.
2839  *
2840  * @param dev
2841  *   Pointer to Ethernet device.
2842  * @param[in] attr
2843  *   Flow rule attributes.
2844  * @param[in] actions
2845  *   Associated actions (list terminated by the END action).
2846  *
2847  * @return
2848  *   > 0 the number of actions and the flow should be split,
2849  *   0 when no split required.
2850  */
2851 static int
2852 flow_check_hairpin_split(struct rte_eth_dev *dev,
2853                          const struct rte_flow_attr *attr,
2854                          const struct rte_flow_action actions[])
2855 {
2856         int queue_action = 0;
2857         int action_n = 0;
2858         int encap = 0;
2859         const struct rte_flow_action_queue *queue;
2860         const struct rte_flow_action_rss *rss;
2861         const struct rte_flow_action_raw_encap *raw_encap;
2862
2863         if (!attr->ingress)
2864                 return 0;
2865         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2866                 switch (actions->type) {
2867                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2868                         queue = actions->conf;
2869                         if (queue == NULL)
2870                                 return 0;
2871                         if (mlx5_rxq_get_type(dev, queue->index) !=
2872                             MLX5_RXQ_TYPE_HAIRPIN)
2873                                 return 0;
2874                         queue_action = 1;
2875                         action_n++;
2876                         break;
2877                 case RTE_FLOW_ACTION_TYPE_RSS:
2878                         rss = actions->conf;
2879                         if (rss == NULL || rss->queue_num == 0)
2880                                 return 0;
2881                         if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
2882                             MLX5_RXQ_TYPE_HAIRPIN)
2883                                 return 0;
2884                         queue_action = 1;
2885                         action_n++;
2886                         break;
2887                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2888                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2889                         encap = 1;
2890                         action_n++;
2891                         break;
2892                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2893                         raw_encap = actions->conf;
2894                         if (raw_encap->size >
2895                             (sizeof(struct rte_flow_item_eth) +
2896                              sizeof(struct rte_flow_item_ipv4)))
2897                                 encap = 1;
2898                         action_n++;
2899                         break;
2900                 default:
2901                         action_n++;
2902                         break;
2903                 }
2904         }
2905         if (encap == 1 && queue_action)
2906                 return action_n;
2907         return 0;
2908 }
2909
2910 /* Declare flow create/destroy prototype in advance. */
2911 static struct rte_flow *
2912 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2913                  const struct rte_flow_attr *attr,
2914                  const struct rte_flow_item items[],
2915                  const struct rte_flow_action actions[],
2916                  bool external, struct rte_flow_error *error);
2917
2918 static void
2919 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2920                   struct rte_flow *flow);
2921
2922 /**
2923  * Add a flow of copying flow metadata registers in RX_CP_TBL.
2924  *
2925  * As mark_id is unique, if there's already a registered flow for the mark_id,
2926  * return by increasing the reference counter of the resource. Otherwise, create
2927  * the resource (mcp_res) and flow.
2928  *
2929  * Flow looks like,
2930  *   - If ingress port is ANY and reg_c[1] is mark_id,
2931  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
2932  *
2933  * For default flow (zero mark_id), flow is like,
2934  *   - If ingress port is ANY,
2935  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
2936  *
2937  * @param dev
2938  *   Pointer to Ethernet device.
2939  * @param mark_id
2940  *   ID of MARK action, zero means default flow for META.
2941  * @param[out] error
2942  *   Perform verbose error reporting if not NULL.
2943  *
2944  * @return
2945  *   Associated resource on success, NULL otherwise and rte_errno is set.
2946  */
2947 static struct mlx5_flow_mreg_copy_resource *
2948 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
2949                           struct rte_flow_error *error)
2950 {
2951         struct mlx5_priv *priv = dev->data->dev_private;
2952         struct rte_flow_attr attr = {
2953                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
2954                 .ingress = 1,
2955         };
2956         struct mlx5_rte_flow_item_tag tag_spec = {
2957                 .data = mark_id,
2958         };
2959         struct rte_flow_item items[] = {
2960                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
2961         };
2962         struct rte_flow_action_mark ftag = {
2963                 .id = mark_id,
2964         };
2965         struct mlx5_flow_action_copy_mreg cp_mreg = {
2966                 .dst = REG_B,
2967                 .src = 0,
2968         };
2969         struct rte_flow_action_jump jump = {
2970                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
2971         };
2972         struct rte_flow_action actions[] = {
2973                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
2974         };
2975         struct mlx5_flow_mreg_copy_resource *mcp_res;
2976         int ret;
2977
2978         /* Fill the register fileds in the flow. */
2979         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
2980         if (ret < 0)
2981                 return NULL;
2982         tag_spec.id = ret;
2983         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
2984         if (ret < 0)
2985                 return NULL;
2986         cp_mreg.src = ret;
2987         /* Check if already registered. */
2988         MLX5_ASSERT(priv->mreg_cp_tbl);
2989         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
2990         if (mcp_res) {
2991                 /* For non-default rule. */
2992                 if (mark_id != MLX5_DEFAULT_COPY_ID)
2993                         mcp_res->refcnt++;
2994                 MLX5_ASSERT(mark_id != MLX5_DEFAULT_COPY_ID ||
2995                             mcp_res->refcnt == 1);
2996                 return mcp_res;
2997         }
2998         /* Provide the full width of FLAG specific value. */
2999         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
3000                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
3001         /* Build a new flow. */
3002         if (mark_id != MLX5_DEFAULT_COPY_ID) {
3003                 items[0] = (struct rte_flow_item){
3004                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3005                         .spec = &tag_spec,
3006                 };
3007                 items[1] = (struct rte_flow_item){
3008                         .type = RTE_FLOW_ITEM_TYPE_END,
3009                 };
3010                 actions[0] = (struct rte_flow_action){
3011                         .type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
3012                         .conf = &ftag,
3013                 };
3014                 actions[1] = (struct rte_flow_action){
3015                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3016                         .conf = &cp_mreg,
3017                 };
3018                 actions[2] = (struct rte_flow_action){
3019                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
3020                         .conf = &jump,
3021                 };
3022                 actions[3] = (struct rte_flow_action){
3023                         .type = RTE_FLOW_ACTION_TYPE_END,
3024                 };
3025         } else {
3026                 /* Default rule, wildcard match. */
3027                 attr.priority = MLX5_FLOW_PRIO_RSVD;
3028                 items[0] = (struct rte_flow_item){
3029                         .type = RTE_FLOW_ITEM_TYPE_END,
3030                 };
3031                 actions[0] = (struct rte_flow_action){
3032                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3033                         .conf = &cp_mreg,
3034                 };
3035                 actions[1] = (struct rte_flow_action){
3036                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
3037                         .conf = &jump,
3038                 };
3039                 actions[2] = (struct rte_flow_action){
3040                         .type = RTE_FLOW_ACTION_TYPE_END,
3041                 };
3042         }
3043         /* Build a new entry. */
3044         mcp_res = rte_zmalloc(__func__, sizeof(*mcp_res), 0);
3045         if (!mcp_res) {
3046                 rte_errno = ENOMEM;
3047                 return NULL;
3048         }
3049         /*
3050          * The copy Flows are not included in any list. There
3051          * ones are referenced from other Flows and can not
3052          * be applied, removed, deleted in ardbitrary order
3053          * by list traversing.
3054          */
3055         mcp_res->flow = flow_list_create(dev, NULL, &attr, items,
3056                                          actions, false, error);
3057         if (!mcp_res->flow)
3058                 goto error;
3059         mcp_res->refcnt++;
3060         mcp_res->hlist_ent.key = mark_id;
3061         ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
3062                                 &mcp_res->hlist_ent);
3063         MLX5_ASSERT(!ret);
3064         if (ret)
3065                 goto error;
3066         return mcp_res;
3067 error:
3068         if (mcp_res->flow)
3069                 flow_list_destroy(dev, NULL, mcp_res->flow);
3070         rte_free(mcp_res);
3071         return NULL;
3072 }
3073
3074 /**
3075  * Release flow in RX_CP_TBL.
3076  *
3077  * @param dev
3078  *   Pointer to Ethernet device.
3079  * @flow
3080  *   Parent flow for wich copying is provided.
3081  */
3082 static void
3083 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
3084                           struct rte_flow *flow)
3085 {
3086         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3087         struct mlx5_priv *priv = dev->data->dev_private;
3088
3089         if (!mcp_res || !priv->mreg_cp_tbl)
3090                 return;
3091         if (flow->copy_applied) {
3092                 MLX5_ASSERT(mcp_res->appcnt);
3093                 flow->copy_applied = 0;
3094                 --mcp_res->appcnt;
3095                 if (!mcp_res->appcnt)
3096                         flow_drv_remove(dev, mcp_res->flow);
3097         }
3098         /*
3099          * We do not check availability of metadata registers here,
3100          * because copy resources are not allocated in this case.
3101          */
3102         if (--mcp_res->refcnt)
3103                 return;
3104         MLX5_ASSERT(mcp_res->flow);
3105         flow_list_destroy(dev, NULL, mcp_res->flow);
3106         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3107         rte_free(mcp_res);
3108         flow->mreg_copy = NULL;
3109 }
3110
3111 /**
3112  * Start flow in RX_CP_TBL.
3113  *
3114  * @param dev
3115  *   Pointer to Ethernet device.
3116  * @flow
3117  *   Parent flow for wich copying is provided.
3118  *
3119  * @return
3120  *   0 on success, a negative errno value otherwise and rte_errno is set.
3121  */
3122 static int
3123 flow_mreg_start_copy_action(struct rte_eth_dev *dev,
3124                             struct rte_flow *flow)
3125 {
3126         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3127         int ret;
3128
3129         if (!mcp_res || flow->copy_applied)
3130                 return 0;
3131         if (!mcp_res->appcnt) {
3132                 ret = flow_drv_apply(dev, mcp_res->flow, NULL);
3133                 if (ret)
3134                         return ret;
3135         }
3136         ++mcp_res->appcnt;
3137         flow->copy_applied = 1;
3138         return 0;
3139 }
3140
3141 /**
3142  * Stop flow in RX_CP_TBL.
3143  *
3144  * @param dev
3145  *   Pointer to Ethernet device.
3146  * @flow
3147  *   Parent flow for wich copying is provided.
3148  */
3149 static void
3150 flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
3151                            struct rte_flow *flow)
3152 {
3153         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3154
3155         if (!mcp_res || !flow->copy_applied)
3156                 return;
3157         MLX5_ASSERT(mcp_res->appcnt);
3158         --mcp_res->appcnt;
3159         flow->copy_applied = 0;
3160         if (!mcp_res->appcnt)
3161                 flow_drv_remove(dev, mcp_res->flow);
3162 }
3163
3164 /**
3165  * Remove the default copy action from RX_CP_TBL.
3166  *
3167  * @param dev
3168  *   Pointer to Ethernet device.
3169  */
3170 static void
3171 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
3172 {
3173         struct mlx5_flow_mreg_copy_resource *mcp_res;
3174         struct mlx5_priv *priv = dev->data->dev_private;
3175
3176         /* Check if default flow is registered. */
3177         if (!priv->mreg_cp_tbl)
3178                 return;
3179         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
3180                                             MLX5_DEFAULT_COPY_ID);
3181         if (!mcp_res)
3182                 return;
3183         MLX5_ASSERT(mcp_res->flow);
3184         flow_list_destroy(dev, NULL, mcp_res->flow);
3185         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3186         rte_free(mcp_res);
3187 }
3188
3189 /**
3190  * Add the default copy action in in RX_CP_TBL.
3191  *
3192  * @param dev
3193  *   Pointer to Ethernet device.
3194  * @param[out] error
3195  *   Perform verbose error reporting if not NULL.
3196  *
3197  * @return
3198  *   0 for success, negative value otherwise and rte_errno is set.
3199  */
3200 static int
3201 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
3202                                   struct rte_flow_error *error)
3203 {
3204         struct mlx5_priv *priv = dev->data->dev_private;
3205         struct mlx5_flow_mreg_copy_resource *mcp_res;
3206
3207         /* Check whether extensive metadata feature is engaged. */
3208         if (!priv->config.dv_flow_en ||
3209             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3210             !mlx5_flow_ext_mreg_supported(dev) ||
3211             !priv->sh->dv_regc0_mask)
3212                 return 0;
3213         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
3214         if (!mcp_res)
3215                 return -rte_errno;
3216         return 0;
3217 }
3218
3219 /**
3220  * Add a flow of copying flow metadata registers in RX_CP_TBL.
3221  *
3222  * All the flow having Q/RSS action should be split by
3223  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
3224  * performs the following,
3225  *   - CQE->flow_tag := reg_c[1] (MARK)
3226  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3227  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
3228  * but there should be a flow per each MARK ID set by MARK action.
3229  *
3230  * For the aforementioned reason, if there's a MARK action in flow's action
3231  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
3232  * the MARK ID to CQE's flow_tag like,
3233  *   - If reg_c[1] is mark_id,
3234  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3235  *
3236  * For SET_META action which stores value in reg_c[0], as the destination is
3237  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
3238  * MARK ID means the default flow. The default flow looks like,
3239  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3240  *
3241  * @param dev
3242  *   Pointer to Ethernet device.
3243  * @param flow
3244  *   Pointer to flow structure.
3245  * @param[in] actions
3246  *   Pointer to the list of actions.
3247  * @param[out] error
3248  *   Perform verbose error reporting if not NULL.
3249  *
3250  * @return
3251  *   0 on success, negative value otherwise and rte_errno is set.
3252  */
3253 static int
3254 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
3255                             struct rte_flow *flow,
3256                             const struct rte_flow_action *actions,
3257                             struct rte_flow_error *error)
3258 {
3259         struct mlx5_priv *priv = dev->data->dev_private;
3260         struct mlx5_dev_config *config = &priv->config;
3261         struct mlx5_flow_mreg_copy_resource *mcp_res;
3262         const struct rte_flow_action_mark *mark;
3263
3264         /* Check whether extensive metadata feature is engaged. */
3265         if (!config->dv_flow_en ||
3266             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3267             !mlx5_flow_ext_mreg_supported(dev) ||
3268             !priv->sh->dv_regc0_mask)
3269                 return 0;
3270         /* Find MARK action. */
3271         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3272                 switch (actions->type) {
3273                 case RTE_FLOW_ACTION_TYPE_FLAG:
3274                         mcp_res = flow_mreg_add_copy_action
3275                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
3276                         if (!mcp_res)
3277                                 return -rte_errno;
3278                         flow->mreg_copy = mcp_res;
3279                         if (dev->data->dev_started) {
3280                                 mcp_res->appcnt++;
3281                                 flow->copy_applied = 1;
3282                         }
3283                         return 0;
3284                 case RTE_FLOW_ACTION_TYPE_MARK:
3285                         mark = (const struct rte_flow_action_mark *)
3286                                 actions->conf;
3287                         mcp_res =
3288                                 flow_mreg_add_copy_action(dev, mark->id, error);
3289                         if (!mcp_res)
3290                                 return -rte_errno;
3291                         flow->mreg_copy = mcp_res;
3292                         if (dev->data->dev_started) {
3293                                 mcp_res->appcnt++;
3294                                 flow->copy_applied = 1;
3295                         }
3296                         return 0;
3297                 default:
3298                         break;
3299                 }
3300         }
3301         return 0;
3302 }
3303
3304 #define MLX5_MAX_SPLIT_ACTIONS 24
3305 #define MLX5_MAX_SPLIT_ITEMS 24
3306
3307 /**
3308  * Split the hairpin flow.
3309  * Since HW can't support encap on Rx we move the encap to Tx.
3310  * If the count action is after the encap then we also
3311  * move the count action. in this case the count will also measure
3312  * the outer bytes.
3313  *
3314  * @param dev
3315  *   Pointer to Ethernet device.
3316  * @param[in] actions
3317  *   Associated actions (list terminated by the END action).
3318  * @param[out] actions_rx
3319  *   Rx flow actions.
3320  * @param[out] actions_tx
3321  *   Tx flow actions..
3322  * @param[out] pattern_tx
3323  *   The pattern items for the Tx flow.
3324  * @param[out] flow_id
3325  *   The flow ID connected to this flow.
3326  *
3327  * @return
3328  *   0 on success.
3329  */
3330 static int
3331 flow_hairpin_split(struct rte_eth_dev *dev,
3332                    const struct rte_flow_action actions[],
3333                    struct rte_flow_action actions_rx[],
3334                    struct rte_flow_action actions_tx[],
3335                    struct rte_flow_item pattern_tx[],
3336                    uint32_t *flow_id)
3337 {
3338         struct mlx5_priv *priv = dev->data->dev_private;
3339         const struct rte_flow_action_raw_encap *raw_encap;
3340         const struct rte_flow_action_raw_decap *raw_decap;
3341         struct mlx5_rte_flow_action_set_tag *set_tag;
3342         struct rte_flow_action *tag_action;
3343         struct mlx5_rte_flow_item_tag *tag_item;
3344         struct rte_flow_item *item;
3345         char *addr;
3346         int encap = 0;
3347
3348         mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
3349         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3350                 switch (actions->type) {
3351                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3352                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3353                         rte_memcpy(actions_tx, actions,
3354                                sizeof(struct rte_flow_action));
3355                         actions_tx++;
3356                         break;
3357                 case RTE_FLOW_ACTION_TYPE_COUNT:
3358                         if (encap) {
3359                                 rte_memcpy(actions_tx, actions,
3360                                            sizeof(struct rte_flow_action));
3361                                 actions_tx++;
3362                         } else {
3363                                 rte_memcpy(actions_rx, actions,
3364                                            sizeof(struct rte_flow_action));
3365                                 actions_rx++;
3366                         }
3367                         break;
3368                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3369                         raw_encap = actions->conf;
3370                         if (raw_encap->size >
3371                             (sizeof(struct rte_flow_item_eth) +
3372                              sizeof(struct rte_flow_item_ipv4))) {
3373                                 memcpy(actions_tx, actions,
3374                                        sizeof(struct rte_flow_action));
3375                                 actions_tx++;
3376                                 encap = 1;
3377                         } else {
3378                                 rte_memcpy(actions_rx, actions,
3379                                            sizeof(struct rte_flow_action));
3380                                 actions_rx++;
3381                         }
3382                         break;
3383                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3384                         raw_decap = actions->conf;
3385                         if (raw_decap->size <
3386                             (sizeof(struct rte_flow_item_eth) +
3387                              sizeof(struct rte_flow_item_ipv4))) {
3388                                 memcpy(actions_tx, actions,
3389                                        sizeof(struct rte_flow_action));
3390                                 actions_tx++;
3391                         } else {
3392                                 rte_memcpy(actions_rx, actions,
3393                                            sizeof(struct rte_flow_action));
3394                                 actions_rx++;
3395                         }
3396                         break;
3397                 default:
3398                         rte_memcpy(actions_rx, actions,
3399                                    sizeof(struct rte_flow_action));
3400                         actions_rx++;
3401                         break;
3402                 }
3403         }
3404         /* Add set meta action and end action for the Rx flow. */
3405         tag_action = actions_rx;
3406         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3407         actions_rx++;
3408         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
3409         actions_rx++;
3410         set_tag = (void *)actions_rx;
3411         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
3412         MLX5_ASSERT(set_tag->id > REG_NONE);
3413         set_tag->data = *flow_id;
3414         tag_action->conf = set_tag;
3415         /* Create Tx item list. */
3416         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
3417         addr = (void *)&pattern_tx[2];
3418         item = pattern_tx;
3419         item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3420         tag_item = (void *)addr;
3421         tag_item->data = *flow_id;
3422         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
3423         MLX5_ASSERT(set_tag->id > REG_NONE);
3424         item->spec = tag_item;
3425         addr += sizeof(struct mlx5_rte_flow_item_tag);
3426         tag_item = (void *)addr;
3427         tag_item->data = UINT32_MAX;
3428         tag_item->id = UINT16_MAX;
3429         item->mask = tag_item;
3430         addr += sizeof(struct mlx5_rte_flow_item_tag);
3431         item->last = NULL;
3432         item++;
3433         item->type = RTE_FLOW_ITEM_TYPE_END;
3434         return 0;
3435 }
3436
3437 /**
3438  * The last stage of splitting chain, just creates the subflow
3439  * without any modification.
3440  *
3441  * @param dev
3442  *   Pointer to Ethernet device.
3443  * @param[in] flow
3444  *   Parent flow structure pointer.
3445  * @param[in, out] sub_flow
3446  *   Pointer to return the created subflow, may be NULL.
3447  * @param[in] prefix_layers
3448  *   Prefix subflow layers, may be 0.
3449  * @param[in] attr
3450  *   Flow rule attributes.
3451  * @param[in] items
3452  *   Pattern specification (list terminated by the END pattern item).
3453  * @param[in] actions
3454  *   Associated actions (list terminated by the END action).
3455  * @param[in] external
3456  *   This flow rule is created by request external to PMD.
3457  * @param[out] error
3458  *   Perform verbose error reporting if not NULL.
3459  * @return
3460  *   0 on success, negative value otherwise
3461  */
3462 static int
3463 flow_create_split_inner(struct rte_eth_dev *dev,
3464                         struct rte_flow *flow,
3465                         struct mlx5_flow **sub_flow,
3466                         uint64_t prefix_layers,
3467                         const struct rte_flow_attr *attr,
3468                         const struct rte_flow_item items[],
3469                         const struct rte_flow_action actions[],
3470                         bool external, struct rte_flow_error *error)
3471 {
3472         struct mlx5_flow *dev_flow;
3473
3474         dev_flow = flow_drv_prepare(flow, attr, items, actions, error);
3475         if (!dev_flow)
3476                 return -rte_errno;
3477         dev_flow->flow = flow;
3478         dev_flow->external = external;
3479         /* Subflow object was created, we must include one in the list. */
3480         LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
3481         /*
3482          * If dev_flow is as one of the suffix flow, some actions in suffix
3483          * flow may need some user defined item layer flags.
3484          */
3485         if (prefix_layers)
3486                 dev_flow->layers = prefix_layers;
3487         if (sub_flow)
3488                 *sub_flow = dev_flow;
3489         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
3490 }
3491
3492 /**
3493  * Split the meter flow.
3494  *
3495  * As meter flow will split to three sub flow, other than meter
3496  * action, the other actions make sense to only meter accepts
3497  * the packet. If it need to be dropped, no other additional
3498  * actions should be take.
3499  *
3500  * One kind of special action which decapsulates the L3 tunnel
3501  * header will be in the prefix sub flow, as not to take the
3502  * L3 tunnel header into account.
3503  *
3504  * @param dev
3505  *   Pointer to Ethernet device.
3506  * @param[in] items
3507  *   Pattern specification (list terminated by the END pattern item).
3508  * @param[out] sfx_items
3509  *   Suffix flow match items (list terminated by the END pattern item).
3510  * @param[in] actions
3511  *   Associated actions (list terminated by the END action).
3512  * @param[out] actions_sfx
3513  *   Suffix flow actions.
3514  * @param[out] actions_pre
3515  *   Prefix flow actions.
3516  * @param[out] pattern_sfx
3517  *   The pattern items for the suffix flow.
3518  * @param[out] tag_sfx
3519  *   Pointer to suffix flow tag.
3520  *
3521  * @return
3522  *   0 on success.
3523  */
3524 static int
3525 flow_meter_split_prep(struct rte_eth_dev *dev,
3526                  const struct rte_flow_item items[],
3527                  struct rte_flow_item sfx_items[],
3528                  const struct rte_flow_action actions[],
3529                  struct rte_flow_action actions_sfx[],
3530                  struct rte_flow_action actions_pre[])
3531 {
3532         struct rte_flow_action *tag_action = NULL;
3533         struct rte_flow_item *tag_item;
3534         struct mlx5_rte_flow_action_set_tag *set_tag;
3535         struct rte_flow_error error;
3536         const struct rte_flow_action_raw_encap *raw_encap;
3537         const struct rte_flow_action_raw_decap *raw_decap;
3538         struct mlx5_rte_flow_item_tag *tag_spec;
3539         struct mlx5_rte_flow_item_tag *tag_mask;
3540         uint32_t tag_id;
3541         bool copy_vlan = false;
3542
3543         /* Prepare the actions for prefix and suffix flow. */
3544         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3545                 struct rte_flow_action **action_cur = NULL;
3546
3547                 switch (actions->type) {
3548                 case RTE_FLOW_ACTION_TYPE_METER:
3549                         /* Add the extra tag action first. */
3550                         tag_action = actions_pre;
3551                         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3552                         actions_pre++;
3553                         action_cur = &actions_pre;
3554                         break;
3555                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3556                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3557                         action_cur = &actions_pre;
3558                         break;
3559                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3560                         raw_encap = actions->conf;
3561                         if (raw_encap->size < MLX5_ENCAPSULATION_DECISION_SIZE)
3562                                 action_cur = &actions_pre;
3563                         break;
3564                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3565                         raw_decap = actions->conf;
3566                         if (raw_decap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
3567                                 action_cur = &actions_pre;
3568                         break;
3569                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3570                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3571                         copy_vlan = true;
3572                         break;
3573                 default:
3574                         break;
3575                 }
3576                 if (!action_cur)
3577                         action_cur = &actions_sfx;
3578                 memcpy(*action_cur, actions, sizeof(struct rte_flow_action));
3579                 (*action_cur)++;
3580         }
3581         /* Add end action to the actions. */
3582         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
3583         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
3584         actions_pre++;
3585         /* Set the tag. */
3586         set_tag = (void *)actions_pre;
3587         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3588         /*
3589          * Get the id from the qrss_pool to make qrss share the id with meter.
3590          */
3591         tag_id = flow_qrss_get_id(dev);
3592         set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
3593         assert(tag_action);
3594         tag_action->conf = set_tag;
3595         /* Prepare the suffix subflow items. */
3596         tag_item = sfx_items++;
3597         for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
3598                 int item_type = items->type;
3599
3600                 switch (item_type) {
3601                 case RTE_FLOW_ITEM_TYPE_PORT_ID:
3602                         memcpy(sfx_items, items, sizeof(*sfx_items));
3603                         sfx_items++;
3604                         break;
3605                 case RTE_FLOW_ITEM_TYPE_VLAN:
3606                         if (copy_vlan) {
3607                                 memcpy(sfx_items, items, sizeof(*sfx_items));
3608                                 /*
3609                                  * Convert to internal match item, it is used
3610                                  * for vlan push and set vid.
3611                                  */
3612                                 sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_VLAN;
3613                                 sfx_items++;
3614                         }
3615                         break;
3616                 default:
3617                         break;
3618                 }
3619         }
3620         sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
3621         sfx_items++;
3622         tag_spec = (struct mlx5_rte_flow_item_tag *)sfx_items;
3623         tag_spec->data = tag_id << MLX5_MTR_COLOR_BITS;
3624         tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3625         tag_mask = tag_spec + 1;
3626         tag_mask->data = 0xffffff00;
3627         tag_item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3628         tag_item->spec = tag_spec;
3629         tag_item->last = NULL;
3630         tag_item->mask = tag_mask;
3631         return tag_id;
3632 }
3633
3634 /**
3635  * Split action list having QUEUE/RSS for metadata register copy.
3636  *
3637  * Once Q/RSS action is detected in user's action list, the flow action
3638  * should be split in order to copy metadata registers, which will happen in
3639  * RX_CP_TBL like,
3640  *   - CQE->flow_tag := reg_c[1] (MARK)
3641  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3642  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
3643  * This is because the last action of each flow must be a terminal action
3644  * (QUEUE, RSS or DROP).
3645  *
3646  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
3647  * stored and kept in the mlx5_flow structure per each sub_flow.
3648  *
3649  * The Q/RSS action is replaced with,
3650  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
3651  * And the following JUMP action is added at the end,
3652  *   - JUMP, to RX_CP_TBL.
3653  *
3654  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
3655  * flow_create_split_metadata() routine. The flow will look like,
3656  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
3657  *
3658  * @param dev
3659  *   Pointer to Ethernet device.
3660  * @param[out] split_actions
3661  *   Pointer to store split actions to jump to CP_TBL.
3662  * @param[in] actions
3663  *   Pointer to the list of original flow actions.
3664  * @param[in] qrss
3665  *   Pointer to the Q/RSS action.
3666  * @param[in] actions_n
3667  *   Number of original actions.
3668  * @param[out] error
3669  *   Perform verbose error reporting if not NULL.
3670  *
3671  * @return
3672  *   non-zero unique flow_id on success, otherwise 0 and
3673  *   error/rte_error are set.
3674  */
3675 static uint32_t
3676 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
3677                           struct rte_flow_action *split_actions,
3678                           const struct rte_flow_action *actions,
3679                           const struct rte_flow_action *qrss,
3680                           int actions_n, struct rte_flow_error *error)
3681 {
3682         struct mlx5_rte_flow_action_set_tag *set_tag;
3683         struct rte_flow_action_jump *jump;
3684         const int qrss_idx = qrss - actions;
3685         uint32_t flow_id = 0;
3686         int ret = 0;
3687
3688         /*
3689          * Given actions will be split
3690          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
3691          * - Add jump to mreg CP_TBL.
3692          * As a result, there will be one more action.
3693          */
3694         ++actions_n;
3695         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
3696         set_tag = (void *)(split_actions + actions_n);
3697         /*
3698          * If tag action is not set to void(it means we are not the meter
3699          * suffix flow), add the tag action. Since meter suffix flow already
3700          * has the tag added.
3701          */
3702         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
3703                 /*
3704                  * Allocate the new subflow ID. This one is unique within
3705                  * device and not shared with representors. Otherwise,
3706                  * we would have to resolve multi-thread access synch
3707                  * issue. Each flow on the shared device is appended
3708                  * with source vport identifier, so the resulting
3709                  * flows will be unique in the shared (by master and
3710                  * representors) domain even if they have coinciding
3711                  * IDs.
3712                  */
3713                 flow_id = flow_qrss_get_id(dev);
3714                 if (!flow_id)
3715                         return rte_flow_error_set(error, ENOMEM,
3716                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3717                                                   NULL, "can't allocate id "
3718                                                   "for split Q/RSS subflow");
3719                 /* Internal SET_TAG action to set flow ID. */
3720                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
3721                         .data = flow_id,
3722                 };
3723                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
3724                 if (ret < 0)
3725                         return ret;
3726                 set_tag->id = ret;
3727                 /* Construct new actions array. */
3728                 /* Replace QUEUE/RSS action. */
3729                 split_actions[qrss_idx] = (struct rte_flow_action){
3730                         .type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
3731                         .conf = set_tag,
3732                 };
3733         }
3734         /* JUMP action to jump to mreg copy table (CP_TBL). */
3735         jump = (void *)(set_tag + 1);
3736         *jump = (struct rte_flow_action_jump){
3737                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
3738         };
3739         split_actions[actions_n - 2] = (struct rte_flow_action){
3740                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
3741                 .conf = jump,
3742         };
3743         split_actions[actions_n - 1] = (struct rte_flow_action){
3744                 .type = RTE_FLOW_ACTION_TYPE_END,
3745         };
3746         return flow_id;
3747 }
3748
3749 /**
3750  * Extend the given action list for Tx metadata copy.
3751  *
3752  * Copy the given action list to the ext_actions and add flow metadata register
3753  * copy action in order to copy reg_a set by WQE to reg_c[0].
3754  *
3755  * @param[out] ext_actions
3756  *   Pointer to the extended action list.
3757  * @param[in] actions
3758  *   Pointer to the list of actions.
3759  * @param[in] actions_n
3760  *   Number of actions in the list.
3761  * @param[out] error
3762  *   Perform verbose error reporting if not NULL.
3763  * @param[in] encap_idx
3764  *   The encap action inndex.
3765  *
3766  * @return
3767  *   0 on success, negative value otherwise
3768  */
3769 static int
3770 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
3771                        struct rte_flow_action *ext_actions,
3772                        const struct rte_flow_action *actions,
3773                        int actions_n, struct rte_flow_error *error,
3774                        int encap_idx)
3775 {
3776         struct mlx5_flow_action_copy_mreg *cp_mreg =
3777                 (struct mlx5_flow_action_copy_mreg *)
3778                         (ext_actions + actions_n + 1);
3779         int ret;
3780
3781         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
3782         if (ret < 0)
3783                 return ret;
3784         cp_mreg->dst = ret;
3785         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
3786         if (ret < 0)
3787                 return ret;
3788         cp_mreg->src = ret;
3789         if (encap_idx != 0)
3790                 memcpy(ext_actions, actions, sizeof(*ext_actions) * encap_idx);
3791         if (encap_idx == actions_n - 1) {
3792                 ext_actions[actions_n - 1] = (struct rte_flow_action){
3793                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3794                         .conf = cp_mreg,
3795                 };
3796                 ext_actions[actions_n] = (struct rte_flow_action){
3797                         .type = RTE_FLOW_ACTION_TYPE_END,
3798                 };
3799         } else {
3800                 ext_actions[encap_idx] = (struct rte_flow_action){
3801                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3802                         .conf = cp_mreg,
3803                 };
3804                 memcpy(ext_actions + encap_idx + 1, actions + encap_idx,
3805                                 sizeof(*ext_actions) * (actions_n - encap_idx));
3806         }
3807         return 0;
3808 }
3809
3810 /**
3811  * The splitting for metadata feature.
3812  *
3813  * - Q/RSS action on NIC Rx should be split in order to pass by
3814  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
3815  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
3816  *
3817  * - All the actions on NIC Tx should have a mreg copy action to
3818  *   copy reg_a from WQE to reg_c[0].
3819  *
3820  * @param dev
3821  *   Pointer to Ethernet device.
3822  * @param[in] flow
3823  *   Parent flow structure pointer.
3824  * @param[in] prefix_layers
3825  *   Prefix flow layer flags.
3826  * @param[in] attr
3827  *   Flow rule attributes.
3828  * @param[in] items
3829  *   Pattern specification (list terminated by the END pattern item).
3830  * @param[in] actions
3831  *   Associated actions (list terminated by the END action).
3832  * @param[in] external
3833  *   This flow rule is created by request external to PMD.
3834  * @param[out] error
3835  *   Perform verbose error reporting if not NULL.
3836  * @return
3837  *   0 on success, negative value otherwise
3838  */
3839 static int
3840 flow_create_split_metadata(struct rte_eth_dev *dev,
3841                            struct rte_flow *flow,
3842                            uint64_t prefix_layers,
3843                            const struct rte_flow_attr *attr,
3844                            const struct rte_flow_item items[],
3845                            const struct rte_flow_action actions[],
3846                            bool external, struct rte_flow_error *error)
3847 {
3848         struct mlx5_priv *priv = dev->data->dev_private;
3849         struct mlx5_dev_config *config = &priv->config;
3850         const struct rte_flow_action *qrss = NULL;
3851         struct rte_flow_action *ext_actions = NULL;
3852         struct mlx5_flow *dev_flow = NULL;
3853         uint32_t qrss_id = 0;
3854         int mtr_sfx = 0;
3855         size_t act_size;
3856         int actions_n;
3857         int encap_idx;
3858         int ret;
3859
3860         /* Check whether extensive metadata feature is engaged. */
3861         if (!config->dv_flow_en ||
3862             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3863             !mlx5_flow_ext_mreg_supported(dev))
3864                 return flow_create_split_inner(dev, flow, NULL, prefix_layers,
3865                                                attr, items, actions, external,
3866                                                error);
3867         actions_n = flow_parse_metadata_split_actions_info(actions, &qrss,
3868                                                            &encap_idx);
3869         if (qrss) {
3870                 /* Exclude hairpin flows from splitting. */
3871                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
3872                         const struct rte_flow_action_queue *queue;
3873
3874                         queue = qrss->conf;
3875                         if (mlx5_rxq_get_type(dev, queue->index) ==
3876                             MLX5_RXQ_TYPE_HAIRPIN)
3877                                 qrss = NULL;
3878                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
3879                         const struct rte_flow_action_rss *rss;
3880
3881                         rss = qrss->conf;
3882                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
3883                             MLX5_RXQ_TYPE_HAIRPIN)
3884                                 qrss = NULL;
3885                 }
3886         }
3887         if (qrss) {
3888                 /* Check if it is in meter suffix table. */
3889                 mtr_sfx = attr->group == (attr->transfer ?
3890                           (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
3891                           MLX5_FLOW_TABLE_LEVEL_SUFFIX);
3892                 /*
3893                  * Q/RSS action on NIC Rx should be split in order to pass by
3894                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
3895                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
3896                  */
3897                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3898                            sizeof(struct rte_flow_action_set_tag) +
3899                            sizeof(struct rte_flow_action_jump);
3900                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3901                 if (!ext_actions)
3902                         return rte_flow_error_set(error, ENOMEM,
3903                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3904                                                   NULL, "no memory to split "
3905                                                   "metadata flow");
3906                 /*
3907                  * If we are the suffix flow of meter, tag already exist.
3908                  * Set the tag action to void.
3909                  */
3910                 if (mtr_sfx)
3911                         ext_actions[qrss - actions].type =
3912                                                 RTE_FLOW_ACTION_TYPE_VOID;
3913                 else
3914                         ext_actions[qrss - actions].type =
3915                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3916                 /*
3917                  * Create the new actions list with removed Q/RSS action
3918                  * and appended set tag and jump to register copy table
3919                  * (RX_CP_TBL). We should preallocate unique tag ID here
3920                  * in advance, because it is needed for set tag action.
3921                  */
3922                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
3923                                                     qrss, actions_n, error);
3924                 if (!mtr_sfx && !qrss_id) {
3925                         ret = -rte_errno;
3926                         goto exit;
3927                 }
3928         } else if (attr->egress && !attr->transfer) {
3929                 /*
3930                  * All the actions on NIC Tx should have a metadata register
3931                  * copy action to copy reg_a from WQE to reg_c[meta]
3932                  */
3933                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3934                            sizeof(struct mlx5_flow_action_copy_mreg);
3935                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3936                 if (!ext_actions)
3937                         return rte_flow_error_set(error, ENOMEM,
3938                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3939                                                   NULL, "no memory to split "
3940                                                   "metadata flow");
3941                 /* Create the action list appended with copy register. */
3942                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
3943                                              actions_n, error, encap_idx);
3944                 if (ret < 0)
3945                         goto exit;
3946         }
3947         /* Add the unmodified original or prefix subflow. */
3948         ret = flow_create_split_inner(dev, flow, &dev_flow, prefix_layers, attr,
3949                                       items, ext_actions ? ext_actions :
3950                                       actions, external, error);
3951         if (ret < 0)
3952                 goto exit;
3953         MLX5_ASSERT(dev_flow);
3954         if (qrss) {
3955                 const struct rte_flow_attr q_attr = {
3956                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
3957                         .ingress = 1,
3958                 };
3959                 /* Internal PMD action to set register. */
3960                 struct mlx5_rte_flow_item_tag q_tag_spec = {
3961                         .data = qrss_id,
3962                         .id = 0,
3963                 };
3964                 struct rte_flow_item q_items[] = {
3965                         {
3966                                 .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3967                                 .spec = &q_tag_spec,
3968                                 .last = NULL,
3969                                 .mask = NULL,
3970                         },
3971                         {
3972                                 .type = RTE_FLOW_ITEM_TYPE_END,
3973                         },
3974                 };
3975                 struct rte_flow_action q_actions[] = {
3976                         {
3977                                 .type = qrss->type,
3978                                 .conf = qrss->conf,
3979                         },
3980                         {
3981                                 .type = RTE_FLOW_ACTION_TYPE_END,
3982                         },
3983                 };
3984                 uint64_t layers = flow_get_prefix_layer_flags(dev_flow);
3985
3986                 /*
3987                  * Configure the tag item only if there is no meter subflow.
3988                  * Since tag is already marked in the meter suffix subflow
3989                  * we can just use the meter suffix items as is.
3990                  */
3991                 if (qrss_id) {
3992                         /* Not meter subflow. */
3993                         MLX5_ASSERT(!mtr_sfx);
3994                         /*
3995                          * Put unique id in prefix flow due to it is destroyed
3996                          * after suffix flow and id will be freed after there
3997                          * is no actual flows with this id and identifier
3998                          * reallocation becomes possible (for example, for
3999                          * other flows in other threads).
4000                          */
4001                         dev_flow->qrss_id = qrss_id;
4002                         qrss_id = 0;
4003                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
4004                                                    error);
4005                         if (ret < 0)
4006                                 goto exit;
4007                         q_tag_spec.id = ret;
4008                 }
4009                 dev_flow = NULL;
4010                 /* Add suffix subflow to execute Q/RSS. */
4011                 ret = flow_create_split_inner(dev, flow, &dev_flow, layers,
4012                                               &q_attr, mtr_sfx ? items :
4013                                               q_items, q_actions,
4014                                               external, error);
4015                 if (ret < 0)
4016                         goto exit;
4017                 MLX5_ASSERT(dev_flow);
4018         }
4019
4020 exit:
4021         /*
4022          * We do not destroy the partially created sub_flows in case of error.
4023          * These ones are included into parent flow list and will be destroyed
4024          * by flow_drv_destroy.
4025          */
4026         flow_qrss_free_id(dev, qrss_id);
4027         rte_free(ext_actions);
4028         return ret;
4029 }
4030
4031 /**
4032  * The splitting for meter feature.
4033  *
4034  * - The meter flow will be split to two flows as prefix and
4035  *   suffix flow. The packets make sense only it pass the prefix
4036  *   meter action.
4037  *
4038  * - Reg_C_5 is used for the packet to match betweend prefix and
4039  *   suffix flow.
4040  *
4041  * @param dev
4042  *   Pointer to Ethernet device.
4043  * @param[in] flow
4044  *   Parent flow structure pointer.
4045  * @param[in] attr
4046  *   Flow rule attributes.
4047  * @param[in] items
4048  *   Pattern specification (list terminated by the END pattern item).
4049  * @param[in] actions
4050  *   Associated actions (list terminated by the END action).
4051  * @param[in] external
4052  *   This flow rule is created by request external to PMD.
4053  * @param[out] error
4054  *   Perform verbose error reporting if not NULL.
4055  * @return
4056  *   0 on success, negative value otherwise
4057  */
4058 static int
4059 flow_create_split_meter(struct rte_eth_dev *dev,
4060                            struct rte_flow *flow,
4061                            const struct rte_flow_attr *attr,
4062                            const struct rte_flow_item items[],
4063                            const struct rte_flow_action actions[],
4064                            bool external, struct rte_flow_error *error)
4065 {
4066         struct mlx5_priv *priv = dev->data->dev_private;
4067         struct rte_flow_action *sfx_actions = NULL;
4068         struct rte_flow_action *pre_actions = NULL;
4069         struct rte_flow_item *sfx_items = NULL;
4070         struct mlx5_flow *dev_flow = NULL;
4071         struct rte_flow_attr sfx_attr = *attr;
4072         uint32_t mtr = 0;
4073         uint32_t mtr_tag_id = 0;
4074         size_t act_size;
4075         size_t item_size;
4076         int actions_n = 0;
4077         int ret;
4078
4079         if (priv->mtr_en)
4080                 actions_n = flow_check_meter_action(actions, &mtr);
4081         if (mtr) {
4082                 /* The five prefix actions: meter, decap, encap, tag, end. */
4083                 act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
4084                            sizeof(struct mlx5_rte_flow_action_set_tag);
4085                 /* tag, vlan, port id, end. */
4086 #define METER_SUFFIX_ITEM 4
4087                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
4088                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
4089                 sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
4090                 if (!sfx_actions)
4091                         return rte_flow_error_set(error, ENOMEM,
4092                                                   RTE_FLOW_ERROR_TYPE_ACTION,
4093                                                   NULL, "no memory to split "
4094                                                   "meter flow");
4095                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
4096                              act_size);
4097                 pre_actions = sfx_actions + actions_n;
4098                 mtr_tag_id = flow_meter_split_prep(dev, items, sfx_items,
4099                                                    actions, sfx_actions,
4100                                                    pre_actions);
4101                 if (!mtr_tag_id) {
4102                         ret = -rte_errno;
4103                         goto exit;
4104                 }
4105                 /* Add the prefix subflow. */
4106                 ret = flow_create_split_inner(dev, flow, &dev_flow, 0, attr,
4107                                               items, pre_actions, external,
4108                                               error);
4109                 if (ret) {
4110                         ret = -rte_errno;
4111                         goto exit;
4112                 }
4113                 dev_flow->mtr_flow_id = mtr_tag_id;
4114                 /* Setting the sfx group atrr. */
4115                 sfx_attr.group = sfx_attr.transfer ?
4116                                 (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
4117                                  MLX5_FLOW_TABLE_LEVEL_SUFFIX;
4118         }
4119         /* Add the prefix subflow. */
4120         ret = flow_create_split_metadata(dev, flow, dev_flow ?
4121                                          flow_get_prefix_layer_flags(dev_flow) :
4122                                          0, &sfx_attr,
4123                                          sfx_items ? sfx_items : items,
4124                                          sfx_actions ? sfx_actions : actions,
4125                                          external, error);
4126 exit:
4127         if (sfx_actions)
4128                 rte_free(sfx_actions);
4129         return ret;
4130 }
4131
4132 /**
4133  * Split the flow to subflow set. The splitters might be linked
4134  * in the chain, like this:
4135  * flow_create_split_outer() calls:
4136  *   flow_create_split_meter() calls:
4137  *     flow_create_split_metadata(meter_subflow_0) calls:
4138  *       flow_create_split_inner(metadata_subflow_0)
4139  *       flow_create_split_inner(metadata_subflow_1)
4140  *       flow_create_split_inner(metadata_subflow_2)
4141  *     flow_create_split_metadata(meter_subflow_1) calls:
4142  *       flow_create_split_inner(metadata_subflow_0)
4143  *       flow_create_split_inner(metadata_subflow_1)
4144  *       flow_create_split_inner(metadata_subflow_2)
4145  *
4146  * This provide flexible way to add new levels of flow splitting.
4147  * The all of successfully created subflows are included to the
4148  * parent flow dev_flow list.
4149  *
4150  * @param dev
4151  *   Pointer to Ethernet device.
4152  * @param[in] flow
4153  *   Parent flow structure pointer.
4154  * @param[in] attr
4155  *   Flow rule attributes.
4156  * @param[in] items
4157  *   Pattern specification (list terminated by the END pattern item).
4158  * @param[in] actions
4159  *   Associated actions (list terminated by the END action).
4160  * @param[in] external
4161  *   This flow rule is created by request external to PMD.
4162  * @param[out] error
4163  *   Perform verbose error reporting if not NULL.
4164  * @return
4165  *   0 on success, negative value otherwise
4166  */
4167 static int
4168 flow_create_split_outer(struct rte_eth_dev *dev,
4169                         struct rte_flow *flow,
4170                         const struct rte_flow_attr *attr,
4171                         const struct rte_flow_item items[],
4172                         const struct rte_flow_action actions[],
4173                         bool external, struct rte_flow_error *error)
4174 {
4175         int ret;
4176
4177         ret = flow_create_split_meter(dev, flow, attr, items,
4178                                          actions, external, error);
4179         MLX5_ASSERT(ret <= 0);
4180         return ret;
4181 }
4182
4183 /**
4184  * Create a flow and add it to @p list.
4185  *
4186  * @param dev
4187  *   Pointer to Ethernet device.
4188  * @param list
4189  *   Pointer to a TAILQ flow list. If this parameter NULL,
4190  *   no list insertion occurred, flow is just created,
4191  *   this is caller's responsibility to track the
4192  *   created flow.
4193  * @param[in] attr
4194  *   Flow rule attributes.
4195  * @param[in] items
4196  *   Pattern specification (list terminated by the END pattern item).
4197  * @param[in] actions
4198  *   Associated actions (list terminated by the END action).
4199  * @param[in] external
4200  *   This flow rule is created by request external to PMD.
4201  * @param[out] error
4202  *   Perform verbose error reporting if not NULL.
4203  *
4204  * @return
4205  *   A flow on success, NULL otherwise and rte_errno is set.
4206  */
4207 static struct rte_flow *
4208 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
4209                  const struct rte_flow_attr *attr,
4210                  const struct rte_flow_item items[],
4211                  const struct rte_flow_action actions[],
4212                  bool external, struct rte_flow_error *error)
4213 {
4214         struct mlx5_priv *priv = dev->data->dev_private;
4215         struct rte_flow *flow = NULL;
4216         struct mlx5_flow *dev_flow;
4217         const struct rte_flow_action_rss *rss;
4218         union {
4219                 struct rte_flow_expand_rss buf;
4220                 uint8_t buffer[2048];
4221         } expand_buffer;
4222         union {
4223                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4224                 uint8_t buffer[2048];
4225         } actions_rx;
4226         union {
4227                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4228                 uint8_t buffer[2048];
4229         } actions_hairpin_tx;
4230         union {
4231                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
4232                 uint8_t buffer[2048];
4233         } items_tx;
4234         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
4235         const struct rte_flow_action *p_actions_rx = actions;
4236         uint32_t i;
4237         uint32_t flow_size;
4238         int hairpin_flow = 0;
4239         uint32_t hairpin_id = 0;
4240         struct rte_flow_attr attr_tx = { .priority = 0 };
4241         int ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
4242                                     error);
4243
4244         if (ret < 0)
4245                 return NULL;
4246         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4247         if (hairpin_flow > 0) {
4248                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
4249                         rte_errno = EINVAL;
4250                         return NULL;
4251                 }
4252                 flow_hairpin_split(dev, actions, actions_rx.actions,
4253                                    actions_hairpin_tx.actions, items_tx.items,
4254                                    &hairpin_id);
4255                 p_actions_rx = actions_rx.actions;
4256         }
4257         flow_size = sizeof(struct rte_flow);
4258         rss = flow_get_rss_action(p_actions_rx);
4259         if (rss)
4260                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
4261                                             sizeof(void *));
4262         else
4263                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
4264         flow = rte_calloc(__func__, 1, flow_size, 0);
4265         if (!flow) {
4266                 rte_errno = ENOMEM;
4267                 goto error_before_flow;
4268         }
4269         flow->drv_type = flow_get_drv_type(dev, attr);
4270         if (hairpin_id != 0)
4271                 flow->hairpin_flow_id = hairpin_id;
4272         MLX5_ASSERT(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
4273                     flow->drv_type < MLX5_FLOW_TYPE_MAX);
4274         flow->rss.queue = (void *)(flow + 1);
4275         if (rss) {
4276                 /*
4277                  * The following information is required by
4278                  * mlx5_flow_hashfields_adjust() in advance.
4279                  */
4280                 flow->rss.level = rss->level;
4281                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
4282                 flow->rss.types = !rss->types ? ETH_RSS_IP : rss->types;
4283         }
4284         LIST_INIT(&flow->dev_flows);
4285         if (rss && rss->types) {
4286                 unsigned int graph_root;
4287
4288                 graph_root = find_graph_root(items, rss->level);
4289                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
4290                                           items, rss->types,
4291                                           mlx5_support_expansion,
4292                                           graph_root);
4293                 MLX5_ASSERT(ret > 0 &&
4294                        (unsigned int)ret < sizeof(expand_buffer.buffer));
4295         } else {
4296                 buf->entries = 1;
4297                 buf->entry[0].pattern = (void *)(uintptr_t)items;
4298         }
4299         for (i = 0; i < buf->entries; ++i) {
4300                 /*
4301                  * The splitter may create multiple dev_flows,
4302                  * depending on configuration. In the simplest
4303                  * case it just creates unmodified original flow.
4304                  */
4305                 ret = flow_create_split_outer(dev, flow, attr,
4306                                               buf->entry[i].pattern,
4307                                               p_actions_rx, external,
4308                                               error);
4309                 if (ret < 0)
4310                         goto error;
4311         }
4312         /* Create the tx flow. */
4313         if (hairpin_flow) {
4314                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
4315                 attr_tx.ingress = 0;
4316                 attr_tx.egress = 1;
4317                 dev_flow = flow_drv_prepare(flow, &attr_tx, items_tx.items,
4318                                             actions_hairpin_tx.actions, error);
4319                 if (!dev_flow)
4320                         goto error;
4321                 dev_flow->flow = flow;
4322                 dev_flow->external = 0;
4323                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
4324                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
4325                                          items_tx.items,
4326                                          actions_hairpin_tx.actions, error);
4327                 if (ret < 0)
4328                         goto error;
4329         }
4330         /*
4331          * Update the metadata register copy table. If extensive
4332          * metadata feature is enabled and registers are supported
4333          * we might create the extra rte_flow for each unique
4334          * MARK/FLAG action ID.
4335          *
4336          * The table is updated for ingress Flows only, because
4337          * the egress Flows belong to the different device and
4338          * copy table should be updated in peer NIC Rx domain.
4339          */
4340         if (attr->ingress &&
4341             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
4342                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
4343                 if (ret)
4344                         goto error;
4345         }
4346         if (dev->data->dev_started) {
4347                 ret = flow_drv_apply(dev, flow, error);
4348                 if (ret < 0)
4349                         goto error;
4350         }
4351         if (list)
4352                 TAILQ_INSERT_TAIL(list, flow, next);
4353         flow_rxq_flags_set(dev, flow);
4354         return flow;
4355 error_before_flow:
4356         if (hairpin_id)
4357                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4358                                      hairpin_id);
4359         return NULL;
4360 error:
4361         MLX5_ASSERT(flow);
4362         flow_mreg_del_copy_action(dev, flow);
4363         ret = rte_errno; /* Save rte_errno before cleanup. */
4364         if (flow->hairpin_flow_id)
4365                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4366                                      flow->hairpin_flow_id);
4367         MLX5_ASSERT(flow);
4368         flow_drv_destroy(dev, flow);
4369         rte_free(flow);
4370         rte_errno = ret; /* Restore rte_errno. */
4371         return NULL;
4372 }
4373
4374 /**
4375  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
4376  * incoming packets to table 1.
4377  *
4378  * Other flow rules, requested for group n, will be created in
4379  * e-switch table n+1.
4380  * Jump action to e-switch group n will be created to group n+1.
4381  *
4382  * Used when working in switchdev mode, to utilise advantages of table 1
4383  * and above.
4384  *
4385  * @param dev
4386  *   Pointer to Ethernet device.
4387  *
4388  * @return
4389  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
4390  */
4391 struct rte_flow *
4392 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
4393 {
4394         const struct rte_flow_attr attr = {
4395                 .group = 0,
4396                 .priority = 0,
4397                 .ingress = 1,
4398                 .egress = 0,
4399                 .transfer = 1,
4400         };
4401         const struct rte_flow_item pattern = {
4402                 .type = RTE_FLOW_ITEM_TYPE_END,
4403         };
4404         struct rte_flow_action_jump jump = {
4405                 .group = 1,
4406         };
4407         const struct rte_flow_action actions[] = {
4408                 {
4409                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4410                         .conf = &jump,
4411                 },
4412                 {
4413                         .type = RTE_FLOW_ACTION_TYPE_END,
4414                 },
4415         };
4416         struct mlx5_priv *priv = dev->data->dev_private;
4417         struct rte_flow_error error;
4418
4419         return flow_list_create(dev, &priv->ctrl_flows, &attr, &pattern,
4420                                 actions, false, &error);
4421 }
4422
4423 /**
4424  * Create a flow.
4425  *
4426  * @see rte_flow_create()
4427  * @see rte_flow_ops
4428  */
4429 struct rte_flow *
4430 mlx5_flow_create(struct rte_eth_dev *dev,
4431                  const struct rte_flow_attr *attr,
4432                  const struct rte_flow_item items[],
4433                  const struct rte_flow_action actions[],
4434                  struct rte_flow_error *error)
4435 {
4436         struct mlx5_priv *priv = dev->data->dev_private;
4437
4438         return flow_list_create(dev, &priv->flows,
4439                                 attr, items, actions, true, error);
4440 }
4441
4442 /**
4443  * Destroy a flow in a list.
4444  *
4445  * @param dev
4446  *   Pointer to Ethernet device.
4447  * @param list
4448  *   Pointer to a TAILQ flow list. If this parameter NULL,
4449  *   there is no flow removal from the list.
4450  * @param[in] flow
4451  *   Flow to destroy.
4452  */
4453 static void
4454 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
4455                   struct rte_flow *flow)
4456 {
4457         struct mlx5_priv *priv = dev->data->dev_private;
4458
4459         /*
4460          * Update RX queue flags only if port is started, otherwise it is
4461          * already clean.
4462          */
4463         if (dev->data->dev_started)
4464                 flow_rxq_flags_trim(dev, flow);
4465         if (flow->hairpin_flow_id)
4466                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4467                                      flow->hairpin_flow_id);
4468         flow_drv_destroy(dev, flow);
4469         if (list)
4470                 TAILQ_REMOVE(list, flow, next);
4471         flow_mreg_del_copy_action(dev, flow);
4472         rte_free(flow->fdir);
4473         rte_free(flow);
4474 }
4475
4476 /**
4477  * Destroy all flows.
4478  *
4479  * @param dev
4480  *   Pointer to Ethernet device.
4481  * @param list
4482  *   Pointer to a TAILQ flow list.
4483  */
4484 void
4485 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
4486 {
4487         while (!TAILQ_EMPTY(list)) {
4488                 struct rte_flow *flow;
4489
4490                 flow = TAILQ_FIRST(list);
4491                 flow_list_destroy(dev, list, flow);
4492         }
4493 }
4494
4495 /**
4496  * Remove all flows.
4497  *
4498  * @param dev
4499  *   Pointer to Ethernet device.
4500  * @param list
4501  *   Pointer to a TAILQ flow list.
4502  */
4503 void
4504 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
4505 {
4506         struct rte_flow *flow;
4507
4508         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
4509                 flow_drv_remove(dev, flow);
4510                 flow_mreg_stop_copy_action(dev, flow);
4511         }
4512         flow_mreg_del_default_copy_action(dev);
4513         flow_rxq_flags_clear(dev);
4514 }
4515
4516 /**
4517  * Add all flows.
4518  *
4519  * @param dev
4520  *   Pointer to Ethernet device.
4521  * @param list
4522  *   Pointer to a TAILQ flow list.
4523  *
4524  * @return
4525  *   0 on success, a negative errno value otherwise and rte_errno is set.
4526  */
4527 int
4528 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
4529 {
4530         struct rte_flow *flow;
4531         struct rte_flow_error error;
4532         int ret = 0;
4533
4534         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4535         ret = flow_mreg_add_default_copy_action(dev, &error);
4536         if (ret < 0)
4537                 return -rte_errno;
4538         /* Apply Flows created by application. */
4539         TAILQ_FOREACH(flow, list, next) {
4540                 ret = flow_mreg_start_copy_action(dev, flow);
4541                 if (ret < 0)
4542                         goto error;
4543                 ret = flow_drv_apply(dev, flow, &error);
4544                 if (ret < 0)
4545                         goto error;
4546                 flow_rxq_flags_set(dev, flow);
4547         }
4548         return 0;
4549 error:
4550         ret = rte_errno; /* Save rte_errno before cleanup. */
4551         mlx5_flow_stop(dev, list);
4552         rte_errno = ret; /* Restore rte_errno. */
4553         return -rte_errno;
4554 }
4555
4556 /**
4557  * Verify the flow list is empty
4558  *
4559  * @param dev
4560  *  Pointer to Ethernet device.
4561  *
4562  * @return the number of flows not released.
4563  */
4564 int
4565 mlx5_flow_verify(struct rte_eth_dev *dev)
4566 {
4567         struct mlx5_priv *priv = dev->data->dev_private;
4568         struct rte_flow *flow;
4569         int ret = 0;
4570
4571         TAILQ_FOREACH(flow, &priv->flows, next) {
4572                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
4573                         dev->data->port_id, (void *)flow);
4574                 ++ret;
4575         }
4576         return ret;
4577 }
4578
4579 /**
4580  * Enable default hairpin egress flow.
4581  *
4582  * @param dev
4583  *   Pointer to Ethernet device.
4584  * @param queue
4585  *   The queue index.
4586  *
4587  * @return
4588  *   0 on success, a negative errno value otherwise and rte_errno is set.
4589  */
4590 int
4591 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
4592                             uint32_t queue)
4593 {
4594         struct mlx5_priv *priv = dev->data->dev_private;
4595         const struct rte_flow_attr attr = {
4596                 .egress = 1,
4597                 .priority = 0,
4598         };
4599         struct mlx5_rte_flow_item_tx_queue queue_spec = {
4600                 .queue = queue,
4601         };
4602         struct mlx5_rte_flow_item_tx_queue queue_mask = {
4603                 .queue = UINT32_MAX,
4604         };
4605         struct rte_flow_item items[] = {
4606                 {
4607                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
4608                         .spec = &queue_spec,
4609                         .last = NULL,
4610                         .mask = &queue_mask,
4611                 },
4612                 {
4613                         .type = RTE_FLOW_ITEM_TYPE_END,
4614                 },
4615         };
4616         struct rte_flow_action_jump jump = {
4617                 .group = MLX5_HAIRPIN_TX_TABLE,
4618         };
4619         struct rte_flow_action actions[2];
4620         struct rte_flow *flow;
4621         struct rte_flow_error error;
4622
4623         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
4624         actions[0].conf = &jump;
4625         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
4626         flow = flow_list_create(dev, &priv->ctrl_flows,
4627                                 &attr, items, actions, false, &error);
4628         if (!flow) {
4629                 DRV_LOG(DEBUG,
4630                         "Failed to create ctrl flow: rte_errno(%d),"
4631                         " type(%d), message(%s)",
4632                         rte_errno, error.type,
4633                         error.message ? error.message : " (no stated reason)");
4634                 return -rte_errno;
4635         }
4636         return 0;
4637 }
4638
4639 /**
4640  * Enable a control flow configured from the control plane.
4641  *
4642  * @param dev
4643  *   Pointer to Ethernet device.
4644  * @param eth_spec
4645  *   An Ethernet flow spec to apply.
4646  * @param eth_mask
4647  *   An Ethernet flow mask to apply.
4648  * @param vlan_spec
4649  *   A VLAN flow spec to apply.
4650  * @param vlan_mask
4651  *   A VLAN flow mask to apply.
4652  *
4653  * @return
4654  *   0 on success, a negative errno value otherwise and rte_errno is set.
4655  */
4656 int
4657 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
4658                     struct rte_flow_item_eth *eth_spec,
4659                     struct rte_flow_item_eth *eth_mask,
4660                     struct rte_flow_item_vlan *vlan_spec,
4661                     struct rte_flow_item_vlan *vlan_mask)
4662 {
4663         struct mlx5_priv *priv = dev->data->dev_private;
4664         const struct rte_flow_attr attr = {
4665                 .ingress = 1,
4666                 .priority = MLX5_FLOW_PRIO_RSVD,
4667         };
4668         struct rte_flow_item items[] = {
4669                 {
4670                         .type = RTE_FLOW_ITEM_TYPE_ETH,
4671                         .spec = eth_spec,
4672                         .last = NULL,
4673                         .mask = eth_mask,
4674                 },
4675                 {
4676                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
4677                                               RTE_FLOW_ITEM_TYPE_END,
4678                         .spec = vlan_spec,
4679                         .last = NULL,
4680                         .mask = vlan_mask,
4681                 },
4682                 {
4683                         .type = RTE_FLOW_ITEM_TYPE_END,
4684                 },
4685         };
4686         uint16_t queue[priv->reta_idx_n];
4687         struct rte_flow_action_rss action_rss = {
4688                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
4689                 .level = 0,
4690                 .types = priv->rss_conf.rss_hf,
4691                 .key_len = priv->rss_conf.rss_key_len,
4692                 .queue_num = priv->reta_idx_n,
4693                 .key = priv->rss_conf.rss_key,
4694                 .queue = queue,
4695         };
4696         struct rte_flow_action actions[] = {
4697                 {
4698                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4699                         .conf = &action_rss,
4700                 },
4701                 {
4702                         .type = RTE_FLOW_ACTION_TYPE_END,
4703                 },
4704         };
4705         struct rte_flow *flow;
4706         struct rte_flow_error error;
4707         unsigned int i;
4708
4709         if (!priv->reta_idx_n || !priv->rxqs_n) {
4710                 return 0;
4711         }
4712         for (i = 0; i != priv->reta_idx_n; ++i)
4713                 queue[i] = (*priv->reta_idx)[i];
4714         flow = flow_list_create(dev, &priv->ctrl_flows,
4715                                 &attr, items, actions, false, &error);
4716         if (!flow)
4717                 return -rte_errno;
4718         return 0;
4719 }
4720
4721 /**
4722  * Enable a flow control configured from the control plane.
4723  *
4724  * @param dev
4725  *   Pointer to Ethernet device.
4726  * @param eth_spec
4727  *   An Ethernet flow spec to apply.
4728  * @param eth_mask
4729  *   An Ethernet flow mask to apply.
4730  *
4731  * @return
4732  *   0 on success, a negative errno value otherwise and rte_errno is set.
4733  */
4734 int
4735 mlx5_ctrl_flow(struct rte_eth_dev *dev,
4736                struct rte_flow_item_eth *eth_spec,
4737                struct rte_flow_item_eth *eth_mask)
4738 {
4739         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
4740 }
4741
4742 /**
4743  * Destroy a flow.
4744  *
4745  * @see rte_flow_destroy()
4746  * @see rte_flow_ops
4747  */
4748 int
4749 mlx5_flow_destroy(struct rte_eth_dev *dev,
4750                   struct rte_flow *flow,
4751                   struct rte_flow_error *error __rte_unused)
4752 {
4753         struct mlx5_priv *priv = dev->data->dev_private;
4754
4755         flow_list_destroy(dev, &priv->flows, flow);
4756         return 0;
4757 }
4758
4759 /**
4760  * Destroy all flows.
4761  *
4762  * @see rte_flow_flush()
4763  * @see rte_flow_ops
4764  */
4765 int
4766 mlx5_flow_flush(struct rte_eth_dev *dev,
4767                 struct rte_flow_error *error __rte_unused)
4768 {
4769         struct mlx5_priv *priv = dev->data->dev_private;
4770
4771         mlx5_flow_list_flush(dev, &priv->flows);
4772         return 0;
4773 }
4774
4775 /**
4776  * Isolated mode.
4777  *
4778  * @see rte_flow_isolate()
4779  * @see rte_flow_ops
4780  */
4781 int
4782 mlx5_flow_isolate(struct rte_eth_dev *dev,
4783                   int enable,
4784                   struct rte_flow_error *error)
4785 {
4786         struct mlx5_priv *priv = dev->data->dev_private;
4787
4788         if (dev->data->dev_started) {
4789                 rte_flow_error_set(error, EBUSY,
4790                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4791                                    NULL,
4792                                    "port must be stopped first");
4793                 return -rte_errno;
4794         }
4795         priv->isolated = !!enable;
4796         if (enable)
4797                 dev->dev_ops = &mlx5_dev_ops_isolate;
4798         else
4799                 dev->dev_ops = &mlx5_dev_ops;
4800         return 0;
4801 }
4802
4803 /**
4804  * Query a flow.
4805  *
4806  * @see rte_flow_query()
4807  * @see rte_flow_ops
4808  */
4809 static int
4810 flow_drv_query(struct rte_eth_dev *dev,
4811                struct rte_flow *flow,
4812                const struct rte_flow_action *actions,
4813                void *data,
4814                struct rte_flow_error *error)
4815 {
4816         const struct mlx5_flow_driver_ops *fops;
4817         enum mlx5_flow_drv_type ftype = flow->drv_type;
4818
4819         MLX5_ASSERT(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
4820         fops = flow_get_drv_ops(ftype);
4821
4822         return fops->query(dev, flow, actions, data, error);
4823 }
4824
4825 /**
4826  * Query a flow.
4827  *
4828  * @see rte_flow_query()
4829  * @see rte_flow_ops
4830  */
4831 int
4832 mlx5_flow_query(struct rte_eth_dev *dev,
4833                 struct rte_flow *flow,
4834                 const struct rte_flow_action *actions,
4835                 void *data,
4836                 struct rte_flow_error *error)
4837 {
4838         int ret;
4839
4840         ret = flow_drv_query(dev, flow, actions, data, error);
4841         if (ret < 0)
4842                 return ret;
4843         return 0;
4844 }
4845
4846 /**
4847  * Convert a flow director filter to a generic flow.
4848  *
4849  * @param dev
4850  *   Pointer to Ethernet device.
4851  * @param fdir_filter
4852  *   Flow director filter to add.
4853  * @param attributes
4854  *   Generic flow parameters structure.
4855  *
4856  * @return
4857  *   0 on success, a negative errno value otherwise and rte_errno is set.
4858  */
4859 static int
4860 flow_fdir_filter_convert(struct rte_eth_dev *dev,
4861                          const struct rte_eth_fdir_filter *fdir_filter,
4862                          struct mlx5_fdir *attributes)
4863 {
4864         struct mlx5_priv *priv = dev->data->dev_private;
4865         const struct rte_eth_fdir_input *input = &fdir_filter->input;
4866         const struct rte_eth_fdir_masks *mask =
4867                 &dev->data->dev_conf.fdir_conf.mask;
4868
4869         /* Validate queue number. */
4870         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
4871                 DRV_LOG(ERR, "port %u invalid queue number %d",
4872                         dev->data->port_id, fdir_filter->action.rx_queue);
4873                 rte_errno = EINVAL;
4874                 return -rte_errno;
4875         }
4876         attributes->attr.ingress = 1;
4877         attributes->items[0] = (struct rte_flow_item) {
4878                 .type = RTE_FLOW_ITEM_TYPE_ETH,
4879                 .spec = &attributes->l2,
4880                 .mask = &attributes->l2_mask,
4881         };
4882         switch (fdir_filter->action.behavior) {
4883         case RTE_ETH_FDIR_ACCEPT:
4884                 attributes->actions[0] = (struct rte_flow_action){
4885                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
4886                         .conf = &attributes->queue,
4887                 };
4888                 break;
4889         case RTE_ETH_FDIR_REJECT:
4890                 attributes->actions[0] = (struct rte_flow_action){
4891                         .type = RTE_FLOW_ACTION_TYPE_DROP,
4892                 };
4893                 break;
4894         default:
4895                 DRV_LOG(ERR, "port %u invalid behavior %d",
4896                         dev->data->port_id,
4897                         fdir_filter->action.behavior);
4898                 rte_errno = ENOTSUP;
4899                 return -rte_errno;
4900         }
4901         attributes->queue.index = fdir_filter->action.rx_queue;
4902         /* Handle L3. */
4903         switch (fdir_filter->input.flow_type) {
4904         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4905         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4906         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4907                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
4908                         .src_addr = input->flow.ip4_flow.src_ip,
4909                         .dst_addr = input->flow.ip4_flow.dst_ip,
4910                         .time_to_live = input->flow.ip4_flow.ttl,
4911                         .type_of_service = input->flow.ip4_flow.tos,
4912                 };
4913                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
4914                         .src_addr = mask->ipv4_mask.src_ip,
4915                         .dst_addr = mask->ipv4_mask.dst_ip,
4916                         .time_to_live = mask->ipv4_mask.ttl,
4917                         .type_of_service = mask->ipv4_mask.tos,
4918                         .next_proto_id = mask->ipv4_mask.proto,
4919                 };
4920                 attributes->items[1] = (struct rte_flow_item){
4921                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
4922                         .spec = &attributes->l3,
4923                         .mask = &attributes->l3_mask,
4924                 };
4925                 break;
4926         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4927         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4928         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4929                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
4930                         .hop_limits = input->flow.ipv6_flow.hop_limits,
4931                         .proto = input->flow.ipv6_flow.proto,
4932                 };
4933
4934                 memcpy(attributes->l3.ipv6.hdr.src_addr,
4935                        input->flow.ipv6_flow.src_ip,
4936                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4937                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
4938                        input->flow.ipv6_flow.dst_ip,
4939                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4940                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
4941                        mask->ipv6_mask.src_ip,
4942                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4943                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
4944                        mask->ipv6_mask.dst_ip,
4945                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4946                 attributes->items[1] = (struct rte_flow_item){
4947                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
4948                         .spec = &attributes->l3,
4949                         .mask = &attributes->l3_mask,
4950                 };
4951                 break;
4952         default:
4953                 DRV_LOG(ERR, "port %u invalid flow type%d",
4954                         dev->data->port_id, fdir_filter->input.flow_type);
4955                 rte_errno = ENOTSUP;
4956                 return -rte_errno;
4957         }
4958         /* Handle L4. */
4959         switch (fdir_filter->input.flow_type) {
4960         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4961                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4962                         .src_port = input->flow.udp4_flow.src_port,
4963                         .dst_port = input->flow.udp4_flow.dst_port,
4964                 };
4965                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4966                         .src_port = mask->src_port_mask,
4967                         .dst_port = mask->dst_port_mask,
4968                 };
4969                 attributes->items[2] = (struct rte_flow_item){
4970                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4971                         .spec = &attributes->l4,
4972                         .mask = &attributes->l4_mask,
4973                 };
4974                 break;
4975         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4976                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4977                         .src_port = input->flow.tcp4_flow.src_port,
4978                         .dst_port = input->flow.tcp4_flow.dst_port,
4979                 };
4980                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4981                         .src_port = mask->src_port_mask,
4982                         .dst_port = mask->dst_port_mask,
4983                 };
4984                 attributes->items[2] = (struct rte_flow_item){
4985                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4986                         .spec = &attributes->l4,
4987                         .mask = &attributes->l4_mask,
4988                 };
4989                 break;
4990         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4991                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4992                         .src_port = input->flow.udp6_flow.src_port,
4993                         .dst_port = input->flow.udp6_flow.dst_port,
4994                 };
4995                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4996                         .src_port = mask->src_port_mask,
4997                         .dst_port = mask->dst_port_mask,
4998                 };
4999                 attributes->items[2] = (struct rte_flow_item){
5000                         .type = RTE_FLOW_ITEM_TYPE_UDP,
5001                         .spec = &attributes->l4,
5002                         .mask = &attributes->l4_mask,
5003                 };
5004                 break;
5005         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
5006                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
5007                         .src_port = input->flow.tcp6_flow.src_port,
5008                         .dst_port = input->flow.tcp6_flow.dst_port,
5009                 };
5010                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
5011                         .src_port = mask->src_port_mask,
5012                         .dst_port = mask->dst_port_mask,
5013                 };
5014                 attributes->items[2] = (struct rte_flow_item){
5015                         .type = RTE_FLOW_ITEM_TYPE_TCP,
5016                         .spec = &attributes->l4,
5017                         .mask = &attributes->l4_mask,
5018                 };
5019                 break;
5020         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
5021         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
5022                 break;
5023         default:
5024                 DRV_LOG(ERR, "port %u invalid flow type%d",
5025                         dev->data->port_id, fdir_filter->input.flow_type);
5026                 rte_errno = ENOTSUP;
5027                 return -rte_errno;
5028         }
5029         return 0;
5030 }
5031
5032 #define FLOW_FDIR_CMP(f1, f2, fld) \
5033         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
5034
5035 /**
5036  * Compare two FDIR flows. If items and actions are identical, the two flows are
5037  * regarded as same.
5038  *
5039  * @param dev
5040  *   Pointer to Ethernet device.
5041  * @param f1
5042  *   FDIR flow to compare.
5043  * @param f2
5044  *   FDIR flow to compare.
5045  *
5046  * @return
5047  *   Zero on match, 1 otherwise.
5048  */
5049 static int
5050 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
5051 {
5052         if (FLOW_FDIR_CMP(f1, f2, attr) ||
5053             FLOW_FDIR_CMP(f1, f2, l2) ||
5054             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
5055             FLOW_FDIR_CMP(f1, f2, l3) ||
5056             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
5057             FLOW_FDIR_CMP(f1, f2, l4) ||
5058             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
5059             FLOW_FDIR_CMP(f1, f2, actions[0].type))
5060                 return 1;
5061         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
5062             FLOW_FDIR_CMP(f1, f2, queue))
5063                 return 1;
5064         return 0;
5065 }
5066
5067 /**
5068  * Search device flow list to find out a matched FDIR flow.
5069  *
5070  * @param dev
5071  *   Pointer to Ethernet device.
5072  * @param fdir_flow
5073  *   FDIR flow to lookup.
5074  *
5075  * @return
5076  *   Pointer of flow if found, NULL otherwise.
5077  */
5078 static struct rte_flow *
5079 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
5080 {
5081         struct mlx5_priv *priv = dev->data->dev_private;
5082         struct rte_flow *flow = NULL;
5083
5084         MLX5_ASSERT(fdir_flow);
5085         TAILQ_FOREACH(flow, &priv->flows, next) {
5086                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
5087                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
5088                                 dev->data->port_id, (void *)flow);
5089                         break;
5090                 }
5091         }
5092         return flow;
5093 }
5094
5095 /**
5096  * Add new flow director filter and store it in list.
5097  *
5098  * @param dev
5099  *   Pointer to Ethernet device.
5100  * @param fdir_filter
5101  *   Flow director filter to add.
5102  *
5103  * @return
5104  *   0 on success, a negative errno value otherwise and rte_errno is set.
5105  */
5106 static int
5107 flow_fdir_filter_add(struct rte_eth_dev *dev,
5108                      const struct rte_eth_fdir_filter *fdir_filter)
5109 {
5110         struct mlx5_priv *priv = dev->data->dev_private;
5111         struct mlx5_fdir *fdir_flow;
5112         struct rte_flow *flow;
5113         int ret;
5114
5115         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
5116         if (!fdir_flow) {
5117                 rte_errno = ENOMEM;
5118                 return -rte_errno;
5119         }
5120         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
5121         if (ret)
5122                 goto error;
5123         flow = flow_fdir_filter_lookup(dev, fdir_flow);
5124         if (flow) {
5125                 rte_errno = EEXIST;
5126                 goto error;
5127         }
5128         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
5129                                 fdir_flow->items, fdir_flow->actions, true,
5130                                 NULL);
5131         if (!flow)
5132                 goto error;
5133         MLX5_ASSERT(!flow->fdir);
5134         flow->fdir = fdir_flow;
5135         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
5136                 dev->data->port_id, (void *)flow);
5137         return 0;
5138 error:
5139         rte_free(fdir_flow);
5140         return -rte_errno;
5141 }
5142
5143 /**
5144  * Delete specific filter.
5145  *
5146  * @param dev
5147  *   Pointer to Ethernet device.
5148  * @param fdir_filter
5149  *   Filter to be deleted.
5150  *
5151  * @return
5152  *   0 on success, a negative errno value otherwise and rte_errno is set.
5153  */
5154 static int
5155 flow_fdir_filter_delete(struct rte_eth_dev *dev,
5156                         const struct rte_eth_fdir_filter *fdir_filter)
5157 {
5158         struct mlx5_priv *priv = dev->data->dev_private;
5159         struct rte_flow *flow;
5160         struct mlx5_fdir fdir_flow = {
5161                 .attr.group = 0,
5162         };
5163         int ret;
5164
5165         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
5166         if (ret)
5167                 return -rte_errno;
5168         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
5169         if (!flow) {
5170                 rte_errno = ENOENT;
5171                 return -rte_errno;
5172         }
5173         flow_list_destroy(dev, &priv->flows, flow);
5174         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
5175                 dev->data->port_id, (void *)flow);
5176         return 0;
5177 }
5178
5179 /**
5180  * Update queue for specific filter.
5181  *
5182  * @param dev
5183  *   Pointer to Ethernet device.
5184  * @param fdir_filter
5185  *   Filter to be updated.
5186  *
5187  * @return
5188  *   0 on success, a negative errno value otherwise and rte_errno is set.
5189  */
5190 static int
5191 flow_fdir_filter_update(struct rte_eth_dev *dev,
5192                         const struct rte_eth_fdir_filter *fdir_filter)
5193 {
5194         int ret;
5195
5196         ret = flow_fdir_filter_delete(dev, fdir_filter);
5197         if (ret)
5198                 return ret;
5199         return flow_fdir_filter_add(dev, fdir_filter);
5200 }
5201
5202 /**
5203  * Flush all filters.
5204  *
5205  * @param dev
5206  *   Pointer to Ethernet device.
5207  */
5208 static void
5209 flow_fdir_filter_flush(struct rte_eth_dev *dev)
5210 {
5211         struct mlx5_priv *priv = dev->data->dev_private;
5212
5213         mlx5_flow_list_flush(dev, &priv->flows);
5214 }
5215
5216 /**
5217  * Get flow director information.
5218  *
5219  * @param dev
5220  *   Pointer to Ethernet device.
5221  * @param[out] fdir_info
5222  *   Resulting flow director information.
5223  */
5224 static void
5225 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
5226 {
5227         struct rte_eth_fdir_masks *mask =
5228                 &dev->data->dev_conf.fdir_conf.mask;
5229
5230         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
5231         fdir_info->guarant_spc = 0;
5232         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
5233         fdir_info->max_flexpayload = 0;
5234         fdir_info->flow_types_mask[0] = 0;
5235         fdir_info->flex_payload_unit = 0;
5236         fdir_info->max_flex_payload_segment_num = 0;
5237         fdir_info->flex_payload_limit = 0;
5238         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
5239 }
5240
5241 /**
5242  * Deal with flow director operations.
5243  *
5244  * @param dev
5245  *   Pointer to Ethernet device.
5246  * @param filter_op
5247  *   Operation to perform.
5248  * @param arg
5249  *   Pointer to operation-specific structure.
5250  *
5251  * @return
5252  *   0 on success, a negative errno value otherwise and rte_errno is set.
5253  */
5254 static int
5255 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
5256                     void *arg)
5257 {
5258         enum rte_fdir_mode fdir_mode =
5259                 dev->data->dev_conf.fdir_conf.mode;
5260
5261         if (filter_op == RTE_ETH_FILTER_NOP)
5262                 return 0;
5263         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
5264             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
5265                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
5266                         dev->data->port_id, fdir_mode);
5267                 rte_errno = EINVAL;
5268                 return -rte_errno;
5269         }
5270         switch (filter_op) {
5271         case RTE_ETH_FILTER_ADD:
5272                 return flow_fdir_filter_add(dev, arg);
5273         case RTE_ETH_FILTER_UPDATE:
5274                 return flow_fdir_filter_update(dev, arg);
5275         case RTE_ETH_FILTER_DELETE:
5276                 return flow_fdir_filter_delete(dev, arg);
5277         case RTE_ETH_FILTER_FLUSH:
5278                 flow_fdir_filter_flush(dev);
5279                 break;
5280         case RTE_ETH_FILTER_INFO:
5281                 flow_fdir_info_get(dev, arg);
5282                 break;
5283         default:
5284                 DRV_LOG(DEBUG, "port %u unknown operation %u",
5285                         dev->data->port_id, filter_op);
5286                 rte_errno = EINVAL;
5287                 return -rte_errno;
5288         }
5289         return 0;
5290 }
5291
5292 /**
5293  * Manage filter operations.
5294  *
5295  * @param dev
5296  *   Pointer to Ethernet device structure.
5297  * @param filter_type
5298  *   Filter type.
5299  * @param filter_op
5300  *   Operation to perform.
5301  * @param arg
5302  *   Pointer to operation-specific structure.
5303  *
5304  * @return
5305  *   0 on success, a negative errno value otherwise and rte_errno is set.
5306  */
5307 int
5308 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
5309                      enum rte_filter_type filter_type,
5310                      enum rte_filter_op filter_op,
5311                      void *arg)
5312 {
5313         switch (filter_type) {
5314         case RTE_ETH_FILTER_GENERIC:
5315                 if (filter_op != RTE_ETH_FILTER_GET) {
5316                         rte_errno = EINVAL;
5317                         return -rte_errno;
5318                 }
5319                 *(const void **)arg = &mlx5_flow_ops;
5320                 return 0;
5321         case RTE_ETH_FILTER_FDIR:
5322                 return flow_fdir_ctrl_func(dev, filter_op, arg);
5323         default:
5324                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
5325                         dev->data->port_id, filter_type);
5326                 rte_errno = ENOTSUP;
5327                 return -rte_errno;
5328         }
5329         return 0;
5330 }
5331
5332 /**
5333  * Create the needed meter and suffix tables.
5334  *
5335  * @param[in] dev
5336  *   Pointer to Ethernet device.
5337  * @param[in] fm
5338  *   Pointer to the flow meter.
5339  *
5340  * @return
5341  *   Pointer to table set on success, NULL otherwise.
5342  */
5343 struct mlx5_meter_domains_infos *
5344 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
5345                           const struct mlx5_flow_meter *fm)
5346 {
5347         const struct mlx5_flow_driver_ops *fops;
5348
5349         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5350         return fops->create_mtr_tbls(dev, fm);
5351 }
5352
5353 /**
5354  * Destroy the meter table set.
5355  *
5356  * @param[in] dev
5357  *   Pointer to Ethernet device.
5358  * @param[in] tbl
5359  *   Pointer to the meter table set.
5360  *
5361  * @return
5362  *   0 on success.
5363  */
5364 int
5365 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
5366                            struct mlx5_meter_domains_infos *tbls)
5367 {
5368         const struct mlx5_flow_driver_ops *fops;
5369
5370         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5371         return fops->destroy_mtr_tbls(dev, tbls);
5372 }
5373
5374 /**
5375  * Create policer rules.
5376  *
5377  * @param[in] dev
5378  *   Pointer to Ethernet device.
5379  * @param[in] fm
5380  *   Pointer to flow meter structure.
5381  * @param[in] attr
5382  *   Pointer to flow attributes.
5383  *
5384  * @return
5385  *   0 on success, -1 otherwise.
5386  */
5387 int
5388 mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
5389                                struct mlx5_flow_meter *fm,
5390                                const struct rte_flow_attr *attr)
5391 {
5392         const struct mlx5_flow_driver_ops *fops;
5393
5394         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5395         return fops->create_policer_rules(dev, fm, attr);
5396 }
5397
5398 /**
5399  * Destroy policer rules.
5400  *
5401  * @param[in] fm
5402  *   Pointer to flow meter structure.
5403  * @param[in] attr
5404  *   Pointer to flow attributes.
5405  *
5406  * @return
5407  *   0 on success, -1 otherwise.
5408  */
5409 int
5410 mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
5411                                 struct mlx5_flow_meter *fm,
5412                                 const struct rte_flow_attr *attr)
5413 {
5414         const struct mlx5_flow_driver_ops *fops;
5415
5416         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5417         return fops->destroy_policer_rules(dev, fm, attr);
5418 }
5419
5420 /**
5421  * Allocate a counter.
5422  *
5423  * @param[in] dev
5424  *   Pointer to Ethernet device structure.
5425  *
5426  * @return
5427  *   Pointer to allocated counter  on success, NULL otherwise.
5428  */
5429 struct mlx5_flow_counter *
5430 mlx5_counter_alloc(struct rte_eth_dev *dev)
5431 {
5432         const struct mlx5_flow_driver_ops *fops;
5433         struct rte_flow_attr attr = { .transfer = 0 };
5434
5435         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5436                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5437                 return fops->counter_alloc(dev);
5438         }
5439         DRV_LOG(ERR,
5440                 "port %u counter allocate is not supported.",
5441                  dev->data->port_id);
5442         return NULL;
5443 }
5444
5445 /**
5446  * Free a counter.
5447  *
5448  * @param[in] dev
5449  *   Pointer to Ethernet device structure.
5450  * @param[in] cnt
5451  *   Pointer to counter to be free.
5452  */
5453 void
5454 mlx5_counter_free(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt)
5455 {
5456         const struct mlx5_flow_driver_ops *fops;
5457         struct rte_flow_attr attr = { .transfer = 0 };
5458
5459         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5460                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5461                 fops->counter_free(dev, cnt);
5462                 return;
5463         }
5464         DRV_LOG(ERR,
5465                 "port %u counter free is not supported.",
5466                  dev->data->port_id);
5467 }
5468
5469 /**
5470  * Query counter statistics.
5471  *
5472  * @param[in] dev
5473  *   Pointer to Ethernet device structure.
5474  * @param[in] cnt
5475  *   Pointer to counter to query.
5476  * @param[in] clear
5477  *   Set to clear counter statistics.
5478  * @param[out] pkts
5479  *   The counter hits packets number to save.
5480  * @param[out] bytes
5481  *   The counter hits bytes number to save.
5482  *
5483  * @return
5484  *   0 on success, a negative errno value otherwise.
5485  */
5486 int
5487 mlx5_counter_query(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt,
5488                    bool clear, uint64_t *pkts, uint64_t *bytes)
5489 {
5490         const struct mlx5_flow_driver_ops *fops;
5491         struct rte_flow_attr attr = { .transfer = 0 };
5492
5493         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5494                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5495                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
5496         }
5497         DRV_LOG(ERR,
5498                 "port %u counter query is not supported.",
5499                  dev->data->port_id);
5500         return -ENOTSUP;
5501 }
5502
5503 #define MLX5_POOL_QUERY_FREQ_US 1000000
5504
5505 /**
5506  * Set the periodic procedure for triggering asynchronous batch queries for all
5507  * the counter pools.
5508  *
5509  * @param[in] sh
5510  *   Pointer to mlx5_ibv_shared object.
5511  */
5512 void
5513 mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
5514 {
5515         struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
5516         uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
5517         uint32_t us;
5518
5519         cont = MLX5_CNT_CONTAINER(sh, 1, 0);
5520         pools_n += rte_atomic16_read(&cont->n_valid);
5521         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
5522         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
5523         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
5524                 sh->cmng.query_thread_on = 0;
5525                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
5526         } else {
5527                 sh->cmng.query_thread_on = 1;
5528         }
5529 }
5530
5531 /**
5532  * The periodic procedure for triggering asynchronous batch queries for all the
5533  * counter pools. This function is probably called by the host thread.
5534  *
5535  * @param[in] arg
5536  *   The parameter for the alarm process.
5537  */
5538 void
5539 mlx5_flow_query_alarm(void *arg)
5540 {
5541         struct mlx5_ibv_shared *sh = arg;
5542         struct mlx5_devx_obj *dcs;
5543         uint16_t offset;
5544         int ret;
5545         uint8_t batch = sh->cmng.batch;
5546         uint16_t pool_index = sh->cmng.pool_index;
5547         struct mlx5_pools_container *cont;
5548         struct mlx5_pools_container *mcont;
5549         struct mlx5_flow_counter_pool *pool;
5550
5551         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
5552                 goto set_alarm;
5553 next_container:
5554         cont = MLX5_CNT_CONTAINER(sh, batch, 1);
5555         mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
5556         /* Check if resize was done and need to flip a container. */
5557         if (cont != mcont) {
5558                 if (cont->pools) {
5559                         /* Clean the old container. */
5560                         rte_free(cont->pools);
5561                         memset(cont, 0, sizeof(*cont));
5562                 }
5563                 rte_cio_wmb();
5564                  /* Flip the host container. */
5565                 sh->cmng.mhi[batch] ^= (uint8_t)2;
5566                 cont = mcont;
5567         }
5568         if (!cont->pools) {
5569                 /* 2 empty containers case is unexpected. */
5570                 if (unlikely(batch != sh->cmng.batch))
5571                         goto set_alarm;
5572                 batch ^= 0x1;
5573                 pool_index = 0;
5574                 goto next_container;
5575         }
5576         pool = cont->pools[pool_index];
5577         if (pool->raw_hw)
5578                 /* There is a pool query in progress. */
5579                 goto set_alarm;
5580         pool->raw_hw =
5581                 LIST_FIRST(&sh->cmng.free_stat_raws);
5582         if (!pool->raw_hw)
5583                 /* No free counter statistics raw memory. */
5584                 goto set_alarm;
5585         dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
5586                                                               (&pool->a64_dcs);
5587         offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
5588         ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
5589                                                offset, NULL, NULL,
5590                                                pool->raw_hw->mem_mng->dm->id,
5591                                                (void *)(uintptr_t)
5592                                                (pool->raw_hw->data + offset),
5593                                                sh->devx_comp,
5594                                                (uint64_t)(uintptr_t)pool);
5595         if (ret) {
5596                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
5597                         " %d", pool->min_dcs->id);
5598                 pool->raw_hw = NULL;
5599                 goto set_alarm;
5600         }
5601         pool->raw_hw->min_dcs_id = dcs->id;
5602         LIST_REMOVE(pool->raw_hw, next);
5603         sh->cmng.pending_queries++;
5604         pool_index++;
5605         if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
5606                 batch ^= 0x1;
5607                 pool_index = 0;
5608         }
5609 set_alarm:
5610         sh->cmng.batch = batch;
5611         sh->cmng.pool_index = pool_index;
5612         mlx5_set_query_alarm(sh);
5613 }
5614
5615 /**
5616  * Handler for the HW respond about ready values from an asynchronous batch
5617  * query. This function is probably called by the host thread.
5618  *
5619  * @param[in] sh
5620  *   The pointer to the shared IB device context.
5621  * @param[in] async_id
5622  *   The Devx async ID.
5623  * @param[in] status
5624  *   The status of the completion.
5625  */
5626 void
5627 mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
5628                                   uint64_t async_id, int status)
5629 {
5630         struct mlx5_flow_counter_pool *pool =
5631                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
5632         struct mlx5_counter_stats_raw *raw_to_free;
5633
5634         if (unlikely(status)) {
5635                 raw_to_free = pool->raw_hw;
5636         } else {
5637                 raw_to_free = pool->raw;
5638                 rte_spinlock_lock(&pool->sl);
5639                 pool->raw = pool->raw_hw;
5640                 rte_spinlock_unlock(&pool->sl);
5641                 rte_atomic64_add(&pool->query_gen, 1);
5642                 /* Be sure the new raw counters data is updated in memory. */
5643                 rte_cio_wmb();
5644         }
5645         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
5646         pool->raw_hw = NULL;
5647         sh->cmng.pending_queries--;
5648 }
5649
5650 /**
5651  * Translate the rte_flow group index to HW table value.
5652  *
5653  * @param[in] attributes
5654  *   Pointer to flow attributes
5655  * @param[in] external
5656  *   Value is part of flow rule created by request external to PMD.
5657  * @param[in] group
5658  *   rte_flow group index value.
5659  * @param[out] fdb_def_rule
5660  *   Whether fdb jump to table 1 is configured.
5661  * @param[out] table
5662  *   HW table value.
5663  * @param[out] error
5664  *   Pointer to error structure.
5665  *
5666  * @return
5667  *   0 on success, a negative errno value otherwise and rte_errno is set.
5668  */
5669 int
5670 mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
5671                          uint32_t group, bool fdb_def_rule, uint32_t *table,
5672                          struct rte_flow_error *error)
5673 {
5674         if (attributes->transfer && external && fdb_def_rule) {
5675                 if (group == UINT32_MAX)
5676                         return rte_flow_error_set
5677                                                 (error, EINVAL,
5678                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
5679                                                  NULL,
5680                                                  "group index not supported");
5681                 *table = group + 1;
5682         } else {
5683                 *table = group;
5684         }
5685         return 0;
5686 }
5687
5688 /**
5689  * Discover availability of metadata reg_c's.
5690  *
5691  * Iteratively use test flows to check availability.
5692  *
5693  * @param[in] dev
5694  *   Pointer to the Ethernet device structure.
5695  *
5696  * @return
5697  *   0 on success, a negative errno value otherwise and rte_errno is set.
5698  */
5699 int
5700 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
5701 {
5702         struct mlx5_priv *priv = dev->data->dev_private;
5703         struct mlx5_dev_config *config = &priv->config;
5704         enum modify_reg idx;
5705         int n = 0;
5706
5707         /* reg_c[0] and reg_c[1] are reserved. */
5708         config->flow_mreg_c[n++] = REG_C_0;
5709         config->flow_mreg_c[n++] = REG_C_1;
5710         /* Discover availability of other reg_c's. */
5711         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
5712                 struct rte_flow_attr attr = {
5713                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5714                         .priority = MLX5_FLOW_PRIO_RSVD,
5715                         .ingress = 1,
5716                 };
5717                 struct rte_flow_item items[] = {
5718                         [0] = {
5719                                 .type = RTE_FLOW_ITEM_TYPE_END,
5720                         },
5721                 };
5722                 struct rte_flow_action actions[] = {
5723                         [0] = {
5724                                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5725                                 .conf = &(struct mlx5_flow_action_copy_mreg){
5726                                         .src = REG_C_1,
5727                                         .dst = idx,
5728                                 },
5729                         },
5730                         [1] = {
5731                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5732                                 .conf = &(struct rte_flow_action_jump){
5733                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5734                                 },
5735                         },
5736                         [2] = {
5737                                 .type = RTE_FLOW_ACTION_TYPE_END,
5738                         },
5739                 };
5740                 struct rte_flow *flow;
5741                 struct rte_flow_error error;
5742
5743                 if (!config->dv_flow_en)
5744                         break;
5745                 /* Create internal flow, validation skips copy action. */
5746                 flow = flow_list_create(dev, NULL, &attr, items,
5747                                         actions, false, &error);
5748                 if (!flow)
5749                         continue;
5750                 if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
5751                         config->flow_mreg_c[n++] = idx;
5752                 flow_list_destroy(dev, NULL, flow);
5753         }
5754         for (; n < MLX5_MREG_C_NUM; ++n)
5755                 config->flow_mreg_c[n] = REG_NONE;
5756         return 0;
5757 }
5758
5759 /**
5760  * Dump flow raw hw data to file
5761  *
5762  * @param[in] dev
5763  *    The pointer to Ethernet device.
5764  * @param[in] file
5765  *   A pointer to a file for output.
5766  * @param[out] error
5767  *   Perform verbose error reporting if not NULL. PMDs initialize this
5768  *   structure in case of error only.
5769  * @return
5770  *   0 on success, a nagative value otherwise.
5771  */
5772 int
5773 mlx5_flow_dev_dump(struct rte_eth_dev *dev,
5774                    FILE *file,
5775                    struct rte_flow_error *error __rte_unused)
5776 {
5777         struct mlx5_priv *priv = dev->data->dev_private;
5778         struct mlx5_ibv_shared *sh = priv->sh;
5779
5780         return mlx5_devx_cmd_flow_dump(sh->fdb_domain, sh->rx_domain,
5781                                        sh->tx_domain, file);
5782 }