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                         .hop_limits = 0xff,
1644                 },
1645         };
1646         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1647         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1648                                       MLX5_FLOW_LAYER_OUTER_L3;
1649         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1650                                       MLX5_FLOW_LAYER_OUTER_L4;
1651         int ret;
1652         uint8_t next_proto = 0xFF;
1653         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1654                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1655                                   MLX5_FLOW_LAYER_INNER_VLAN);
1656
1657         if ((last_item & l2_vlan) && ether_type &&
1658             ether_type != RTE_ETHER_TYPE_IPV6)
1659                 return rte_flow_error_set(error, EINVAL,
1660                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1661                                           "IPv6 cannot follow L2/VLAN layer "
1662                                           "which ether type is not IPv6");
1663         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
1664                 if (mask && spec)
1665                         next_proto = mask->hdr.proto & spec->hdr.proto;
1666                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1667                         return rte_flow_error_set(error, EINVAL,
1668                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1669                                                   item,
1670                                                   "multiple tunnel "
1671                                                   "not supported");
1672         }
1673         if (item_flags & MLX5_FLOW_LAYER_IPIP)
1674                 return rte_flow_error_set(error, EINVAL,
1675                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1676                                           "wrong tunnel type - IPv4 specified "
1677                                           "but IPv6 item provided");
1678         if (item_flags & l3m)
1679                 return rte_flow_error_set(error, ENOTSUP,
1680                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1681                                           "multiple L3 layers not supported");
1682         else if (item_flags & l4m)
1683                 return rte_flow_error_set(error, EINVAL,
1684                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1685                                           "L3 cannot follow an L4 layer.");
1686         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1687                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1688                 return rte_flow_error_set(error, EINVAL,
1689                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1690                                           "L3 cannot follow an NVGRE layer.");
1691         if (!mask)
1692                 mask = &rte_flow_item_ipv6_mask;
1693         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1694                                         acc_mask ? (const uint8_t *)acc_mask
1695                                                  : (const uint8_t *)&nic_mask,
1696                                         sizeof(struct rte_flow_item_ipv6),
1697                                         error);
1698         if (ret < 0)
1699                 return ret;
1700         return 0;
1701 }
1702
1703 /**
1704  * Validate UDP item.
1705  *
1706  * @param[in] item
1707  *   Item specification.
1708  * @param[in] item_flags
1709  *   Bit-fields that holds the items detected until now.
1710  * @param[in] target_protocol
1711  *   The next protocol in the previous item.
1712  * @param[in] flow_mask
1713  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1714  * @param[out] error
1715  *   Pointer to error structure.
1716  *
1717  * @return
1718  *   0 on success, a negative errno value otherwise and rte_errno is set.
1719  */
1720 int
1721 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1722                             uint64_t item_flags,
1723                             uint8_t target_protocol,
1724                             struct rte_flow_error *error)
1725 {
1726         const struct rte_flow_item_udp *mask = item->mask;
1727         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1728         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1729                                       MLX5_FLOW_LAYER_OUTER_L3;
1730         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1731                                       MLX5_FLOW_LAYER_OUTER_L4;
1732         int ret;
1733
1734         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1735                 return rte_flow_error_set(error, EINVAL,
1736                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1737                                           "protocol filtering not compatible"
1738                                           " with UDP layer");
1739         if (!(item_flags & l3m))
1740                 return rte_flow_error_set(error, EINVAL,
1741                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1742                                           "L3 is mandatory to filter on L4");
1743         if (item_flags & l4m)
1744                 return rte_flow_error_set(error, EINVAL,
1745                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1746                                           "multiple L4 layers not supported");
1747         if (!mask)
1748                 mask = &rte_flow_item_udp_mask;
1749         ret = mlx5_flow_item_acceptable
1750                 (item, (const uint8_t *)mask,
1751                  (const uint8_t *)&rte_flow_item_udp_mask,
1752                  sizeof(struct rte_flow_item_udp), error);
1753         if (ret < 0)
1754                 return ret;
1755         return 0;
1756 }
1757
1758 /**
1759  * Validate TCP item.
1760  *
1761  * @param[in] item
1762  *   Item specification.
1763  * @param[in] item_flags
1764  *   Bit-fields that holds the items detected until now.
1765  * @param[in] target_protocol
1766  *   The next protocol in the previous item.
1767  * @param[out] error
1768  *   Pointer to error structure.
1769  *
1770  * @return
1771  *   0 on success, a negative errno value otherwise and rte_errno is set.
1772  */
1773 int
1774 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1775                             uint64_t item_flags,
1776                             uint8_t target_protocol,
1777                             const struct rte_flow_item_tcp *flow_mask,
1778                             struct rte_flow_error *error)
1779 {
1780         const struct rte_flow_item_tcp *mask = item->mask;
1781         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1782         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1783                                       MLX5_FLOW_LAYER_OUTER_L3;
1784         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1785                                       MLX5_FLOW_LAYER_OUTER_L4;
1786         int ret;
1787
1788         MLX5_ASSERT(flow_mask);
1789         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1790                 return rte_flow_error_set(error, EINVAL,
1791                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1792                                           "protocol filtering not compatible"
1793                                           " with TCP layer");
1794         if (!(item_flags & l3m))
1795                 return rte_flow_error_set(error, EINVAL,
1796                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1797                                           "L3 is mandatory to filter on L4");
1798         if (item_flags & l4m)
1799                 return rte_flow_error_set(error, EINVAL,
1800                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1801                                           "multiple L4 layers not supported");
1802         if (!mask)
1803                 mask = &rte_flow_item_tcp_mask;
1804         ret = mlx5_flow_item_acceptable
1805                 (item, (const uint8_t *)mask,
1806                  (const uint8_t *)flow_mask,
1807                  sizeof(struct rte_flow_item_tcp), error);
1808         if (ret < 0)
1809                 return ret;
1810         return 0;
1811 }
1812
1813 /**
1814  * Validate VXLAN item.
1815  *
1816  * @param[in] item
1817  *   Item specification.
1818  * @param[in] item_flags
1819  *   Bit-fields that holds the items detected until now.
1820  * @param[in] target_protocol
1821  *   The next protocol in the previous item.
1822  * @param[out] error
1823  *   Pointer to error structure.
1824  *
1825  * @return
1826  *   0 on success, a negative errno value otherwise and rte_errno is set.
1827  */
1828 int
1829 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1830                               uint64_t item_flags,
1831                               struct rte_flow_error *error)
1832 {
1833         const struct rte_flow_item_vxlan *spec = item->spec;
1834         const struct rte_flow_item_vxlan *mask = item->mask;
1835         int ret;
1836         union vni {
1837                 uint32_t vlan_id;
1838                 uint8_t vni[4];
1839         } id = { .vlan_id = 0, };
1840         uint32_t vlan_id = 0;
1841
1842
1843         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1844                 return rte_flow_error_set(error, ENOTSUP,
1845                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1846                                           "multiple tunnel layers not"
1847                                           " supported");
1848         /*
1849          * Verify only UDPv4 is present as defined in
1850          * https://tools.ietf.org/html/rfc7348
1851          */
1852         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1853                 return rte_flow_error_set(error, EINVAL,
1854                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1855                                           "no outer UDP layer found");
1856         if (!mask)
1857                 mask = &rte_flow_item_vxlan_mask;
1858         ret = mlx5_flow_item_acceptable
1859                 (item, (const uint8_t *)mask,
1860                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1861                  sizeof(struct rte_flow_item_vxlan),
1862                  error);
1863         if (ret < 0)
1864                 return ret;
1865         if (spec) {
1866                 memcpy(&id.vni[1], spec->vni, 3);
1867                 vlan_id = id.vlan_id;
1868                 memcpy(&id.vni[1], mask->vni, 3);
1869                 vlan_id &= id.vlan_id;
1870         }
1871         /*
1872          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1873          * only this layer is defined in the Verbs specification it is
1874          * interpreted as wildcard and all packets will match this
1875          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1876          * udp), all packets matching the layers before will also
1877          * match this rule.  To avoid such situation, VNI 0 is
1878          * currently refused.
1879          */
1880         if (!vlan_id)
1881                 return rte_flow_error_set(error, ENOTSUP,
1882                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1883                                           "VXLAN vni cannot be 0");
1884         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1885                 return rte_flow_error_set(error, ENOTSUP,
1886                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1887                                           "VXLAN tunnel must be fully defined");
1888         return 0;
1889 }
1890
1891 /**
1892  * Validate VXLAN_GPE item.
1893  *
1894  * @param[in] item
1895  *   Item specification.
1896  * @param[in] item_flags
1897  *   Bit-fields that holds the items detected until now.
1898  * @param[in] priv
1899  *   Pointer to the private data structure.
1900  * @param[in] target_protocol
1901  *   The next protocol in the previous item.
1902  * @param[out] error
1903  *   Pointer to error structure.
1904  *
1905  * @return
1906  *   0 on success, a negative errno value otherwise and rte_errno is set.
1907  */
1908 int
1909 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1910                                   uint64_t item_flags,
1911                                   struct rte_eth_dev *dev,
1912                                   struct rte_flow_error *error)
1913 {
1914         struct mlx5_priv *priv = dev->data->dev_private;
1915         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1916         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1917         int ret;
1918         union vni {
1919                 uint32_t vlan_id;
1920                 uint8_t vni[4];
1921         } id = { .vlan_id = 0, };
1922         uint32_t vlan_id = 0;
1923
1924         if (!priv->config.l3_vxlan_en)
1925                 return rte_flow_error_set(error, ENOTSUP,
1926                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1927                                           "L3 VXLAN is not enabled by device"
1928                                           " parameter and/or not configured in"
1929                                           " firmware");
1930         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1931                 return rte_flow_error_set(error, ENOTSUP,
1932                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1933                                           "multiple tunnel layers not"
1934                                           " supported");
1935         /*
1936          * Verify only UDPv4 is present as defined in
1937          * https://tools.ietf.org/html/rfc7348
1938          */
1939         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1940                 return rte_flow_error_set(error, EINVAL,
1941                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1942                                           "no outer UDP layer found");
1943         if (!mask)
1944                 mask = &rte_flow_item_vxlan_gpe_mask;
1945         ret = mlx5_flow_item_acceptable
1946                 (item, (const uint8_t *)mask,
1947                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1948                  sizeof(struct rte_flow_item_vxlan_gpe),
1949                  error);
1950         if (ret < 0)
1951                 return ret;
1952         if (spec) {
1953                 if (spec->protocol)
1954                         return rte_flow_error_set(error, ENOTSUP,
1955                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1956                                                   item,
1957                                                   "VxLAN-GPE protocol"
1958                                                   " not supported");
1959                 memcpy(&id.vni[1], spec->vni, 3);
1960                 vlan_id = id.vlan_id;
1961                 memcpy(&id.vni[1], mask->vni, 3);
1962                 vlan_id &= id.vlan_id;
1963         }
1964         /*
1965          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1966          * layer is defined in the Verbs specification it is interpreted as
1967          * wildcard and all packets will match this rule, if it follows a full
1968          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1969          * before will also match this rule.  To avoid such situation, VNI 0
1970          * is currently refused.
1971          */
1972         if (!vlan_id)
1973                 return rte_flow_error_set(error, ENOTSUP,
1974                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1975                                           "VXLAN-GPE vni cannot be 0");
1976         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1977                 return rte_flow_error_set(error, ENOTSUP,
1978                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1979                                           "VXLAN-GPE tunnel must be fully"
1980                                           " defined");
1981         return 0;
1982 }
1983 /**
1984  * Validate GRE Key item.
1985  *
1986  * @param[in] item
1987  *   Item specification.
1988  * @param[in] item_flags
1989  *   Bit flags to mark detected items.
1990  * @param[in] gre_item
1991  *   Pointer to gre_item
1992  * @param[out] error
1993  *   Pointer to error structure.
1994  *
1995  * @return
1996  *   0 on success, a negative errno value otherwise and rte_errno is set.
1997  */
1998 int
1999 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
2000                                 uint64_t item_flags,
2001                                 const struct rte_flow_item *gre_item,
2002                                 struct rte_flow_error *error)
2003 {
2004         const rte_be32_t *mask = item->mask;
2005         int ret = 0;
2006         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2007         const struct rte_flow_item_gre *gre_spec;
2008         const struct rte_flow_item_gre *gre_mask;
2009
2010         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2011                 return rte_flow_error_set(error, ENOTSUP,
2012                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2013                                           "Multiple GRE key not support");
2014         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2015                 return rte_flow_error_set(error, ENOTSUP,
2016                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2017                                           "No preceding GRE header");
2018         if (item_flags & MLX5_FLOW_LAYER_INNER)
2019                 return rte_flow_error_set(error, ENOTSUP,
2020                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2021                                           "GRE key following a wrong item");
2022         gre_mask = gre_item->mask;
2023         if (!gre_mask)
2024                 gre_mask = &rte_flow_item_gre_mask;
2025         gre_spec = gre_item->spec;
2026         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2027                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2028                 return rte_flow_error_set(error, EINVAL,
2029                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2030                                           "Key bit must be on");
2031
2032         if (!mask)
2033                 mask = &gre_key_default_mask;
2034         ret = mlx5_flow_item_acceptable
2035                 (item, (const uint8_t *)mask,
2036                  (const uint8_t *)&gre_key_default_mask,
2037                  sizeof(rte_be32_t), error);
2038         return ret;
2039 }
2040
2041 /**
2042  * Validate GRE item.
2043  *
2044  * @param[in] item
2045  *   Item specification.
2046  * @param[in] item_flags
2047  *   Bit flags to mark detected items.
2048  * @param[in] target_protocol
2049  *   The next protocol in the previous item.
2050  * @param[out] error
2051  *   Pointer to error structure.
2052  *
2053  * @return
2054  *   0 on success, a negative errno value otherwise and rte_errno is set.
2055  */
2056 int
2057 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2058                             uint64_t item_flags,
2059                             uint8_t target_protocol,
2060                             struct rte_flow_error *error)
2061 {
2062         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2063         const struct rte_flow_item_gre *mask = item->mask;
2064         int ret;
2065         const struct rte_flow_item_gre nic_mask = {
2066                 .c_rsvd0_ver = RTE_BE16(0xB000),
2067                 .protocol = RTE_BE16(UINT16_MAX),
2068         };
2069
2070         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2071                 return rte_flow_error_set(error, EINVAL,
2072                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2073                                           "protocol filtering not compatible"
2074                                           " with this GRE layer");
2075         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2076                 return rte_flow_error_set(error, ENOTSUP,
2077                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2078                                           "multiple tunnel layers not"
2079                                           " supported");
2080         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2081                 return rte_flow_error_set(error, ENOTSUP,
2082                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2083                                           "L3 Layer is missing");
2084         if (!mask)
2085                 mask = &rte_flow_item_gre_mask;
2086         ret = mlx5_flow_item_acceptable
2087                 (item, (const uint8_t *)mask,
2088                  (const uint8_t *)&nic_mask,
2089                  sizeof(struct rte_flow_item_gre), error);
2090         if (ret < 0)
2091                 return ret;
2092 #ifndef HAVE_MLX5DV_DR
2093 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2094         if (spec && (spec->protocol & mask->protocol))
2095                 return rte_flow_error_set(error, ENOTSUP,
2096                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2097                                           "without MPLS support the"
2098                                           " specification cannot be used for"
2099                                           " filtering");
2100 #endif
2101 #endif
2102         return 0;
2103 }
2104
2105 /**
2106  * Validate Geneve item.
2107  *
2108  * @param[in] item
2109  *   Item specification.
2110  * @param[in] itemFlags
2111  *   Bit-fields that holds the items detected until now.
2112  * @param[in] enPriv
2113  *   Pointer to the private data structure.
2114  * @param[out] error
2115  *   Pointer to error structure.
2116  *
2117  * @return
2118  *   0 on success, a negative errno value otherwise and rte_errno is set.
2119  */
2120
2121 int
2122 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2123                                uint64_t item_flags,
2124                                struct rte_eth_dev *dev,
2125                                struct rte_flow_error *error)
2126 {
2127         struct mlx5_priv *priv = dev->data->dev_private;
2128         const struct rte_flow_item_geneve *spec = item->spec;
2129         const struct rte_flow_item_geneve *mask = item->mask;
2130         int ret;
2131         uint16_t gbhdr;
2132         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2133                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2134         const struct rte_flow_item_geneve nic_mask = {
2135                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2136                 .vni = "\xff\xff\xff",
2137                 .protocol = RTE_BE16(UINT16_MAX),
2138         };
2139
2140         if (!priv->config.hca_attr.tunnel_stateless_geneve_rx)
2141                 return rte_flow_error_set(error, ENOTSUP,
2142                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2143                                           "L3 Geneve is not enabled by device"
2144                                           " parameter and/or not configured in"
2145                                           " firmware");
2146         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2147                 return rte_flow_error_set(error, ENOTSUP,
2148                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2149                                           "multiple tunnel layers not"
2150                                           " supported");
2151         /*
2152          * Verify only UDPv4 is present as defined in
2153          * https://tools.ietf.org/html/rfc7348
2154          */
2155         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2156                 return rte_flow_error_set(error, EINVAL,
2157                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2158                                           "no outer UDP layer found");
2159         if (!mask)
2160                 mask = &rte_flow_item_geneve_mask;
2161         ret = mlx5_flow_item_acceptable
2162                                   (item, (const uint8_t *)mask,
2163                                    (const uint8_t *)&nic_mask,
2164                                    sizeof(struct rte_flow_item_geneve), error);
2165         if (ret)
2166                 return ret;
2167         if (spec) {
2168                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2169                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2170                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2171                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2172                         return rte_flow_error_set(error, ENOTSUP,
2173                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2174                                                   item,
2175                                                   "Geneve protocol unsupported"
2176                                                   " fields are being used");
2177                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2178                         return rte_flow_error_set
2179                                         (error, ENOTSUP,
2180                                          RTE_FLOW_ERROR_TYPE_ITEM,
2181                                          item,
2182                                          "Unsupported Geneve options length");
2183         }
2184         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2185                 return rte_flow_error_set
2186                                     (error, ENOTSUP,
2187                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2188                                      "Geneve tunnel must be fully defined");
2189         return 0;
2190 }
2191
2192 /**
2193  * Validate MPLS item.
2194  *
2195  * @param[in] dev
2196  *   Pointer to the rte_eth_dev structure.
2197  * @param[in] item
2198  *   Item specification.
2199  * @param[in] item_flags
2200  *   Bit-fields that holds the items detected until now.
2201  * @param[in] prev_layer
2202  *   The protocol layer indicated in previous item.
2203  * @param[out] error
2204  *   Pointer to error structure.
2205  *
2206  * @return
2207  *   0 on success, a negative errno value otherwise and rte_errno is set.
2208  */
2209 int
2210 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2211                              const struct rte_flow_item *item __rte_unused,
2212                              uint64_t item_flags __rte_unused,
2213                              uint64_t prev_layer __rte_unused,
2214                              struct rte_flow_error *error)
2215 {
2216 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2217         const struct rte_flow_item_mpls *mask = item->mask;
2218         struct mlx5_priv *priv = dev->data->dev_private;
2219         int ret;
2220
2221         if (!priv->config.mpls_en)
2222                 return rte_flow_error_set(error, ENOTSUP,
2223                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2224                                           "MPLS not supported or"
2225                                           " disabled in firmware"
2226                                           " configuration.");
2227         /* MPLS over IP, UDP, GRE is allowed */
2228         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2229                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2230                             MLX5_FLOW_LAYER_GRE)))
2231                 return rte_flow_error_set(error, EINVAL,
2232                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2233                                           "protocol filtering not compatible"
2234                                           " with MPLS layer");
2235         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2236         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2237             !(item_flags & MLX5_FLOW_LAYER_GRE))
2238                 return rte_flow_error_set(error, ENOTSUP,
2239                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2240                                           "multiple tunnel layers not"
2241                                           " supported");
2242         if (!mask)
2243                 mask = &rte_flow_item_mpls_mask;
2244         ret = mlx5_flow_item_acceptable
2245                 (item, (const uint8_t *)mask,
2246                  (const uint8_t *)&rte_flow_item_mpls_mask,
2247                  sizeof(struct rte_flow_item_mpls), error);
2248         if (ret < 0)
2249                 return ret;
2250         return 0;
2251 #endif
2252         return rte_flow_error_set(error, ENOTSUP,
2253                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2254                                   "MPLS is not supported by Verbs, please"
2255                                   " update.");
2256 }
2257
2258 /**
2259  * Validate NVGRE item.
2260  *
2261  * @param[in] item
2262  *   Item specification.
2263  * @param[in] item_flags
2264  *   Bit flags to mark detected items.
2265  * @param[in] target_protocol
2266  *   The next protocol in the previous item.
2267  * @param[out] error
2268  *   Pointer to error structure.
2269  *
2270  * @return
2271  *   0 on success, a negative errno value otherwise and rte_errno is set.
2272  */
2273 int
2274 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2275                               uint64_t item_flags,
2276                               uint8_t target_protocol,
2277                               struct rte_flow_error *error)
2278 {
2279         const struct rte_flow_item_nvgre *mask = item->mask;
2280         int ret;
2281
2282         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2283                 return rte_flow_error_set(error, EINVAL,
2284                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2285                                           "protocol filtering not compatible"
2286                                           " with this GRE layer");
2287         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2288                 return rte_flow_error_set(error, ENOTSUP,
2289                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2290                                           "multiple tunnel layers not"
2291                                           " supported");
2292         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2293                 return rte_flow_error_set(error, ENOTSUP,
2294                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2295                                           "L3 Layer is missing");
2296         if (!mask)
2297                 mask = &rte_flow_item_nvgre_mask;
2298         ret = mlx5_flow_item_acceptable
2299                 (item, (const uint8_t *)mask,
2300                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2301                  sizeof(struct rte_flow_item_nvgre), error);
2302         if (ret < 0)
2303                 return ret;
2304         return 0;
2305 }
2306
2307 /* Allocate unique ID for the split Q/RSS subflows. */
2308 static uint32_t
2309 flow_qrss_get_id(struct rte_eth_dev *dev)
2310 {
2311         struct mlx5_priv *priv = dev->data->dev_private;
2312         uint32_t qrss_id, ret;
2313
2314         ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
2315         if (ret)
2316                 return 0;
2317         MLX5_ASSERT(qrss_id);
2318         return qrss_id;
2319 }
2320
2321 /* Free unique ID for the split Q/RSS subflows. */
2322 static void
2323 flow_qrss_free_id(struct rte_eth_dev *dev,  uint32_t qrss_id)
2324 {
2325         struct mlx5_priv *priv = dev->data->dev_private;
2326
2327         if (qrss_id)
2328                 mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
2329 }
2330
2331 /**
2332  * Release resource related QUEUE/RSS action split.
2333  *
2334  * @param dev
2335  *   Pointer to Ethernet device.
2336  * @param flow
2337  *   Flow to release id's from.
2338  */
2339 static void
2340 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
2341                              struct rte_flow *flow)
2342 {
2343         struct mlx5_flow *dev_flow;
2344
2345         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
2346                 if (dev_flow->qrss_id)
2347                         flow_qrss_free_id(dev, dev_flow->qrss_id);
2348 }
2349
2350 static int
2351 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
2352                    const struct rte_flow_attr *attr __rte_unused,
2353                    const struct rte_flow_item items[] __rte_unused,
2354                    const struct rte_flow_action actions[] __rte_unused,
2355                    bool external __rte_unused,
2356                    struct rte_flow_error *error)
2357 {
2358         return rte_flow_error_set(error, ENOTSUP,
2359                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2360 }
2361
2362 static struct mlx5_flow *
2363 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
2364                   const struct rte_flow_item items[] __rte_unused,
2365                   const struct rte_flow_action actions[] __rte_unused,
2366                   struct rte_flow_error *error)
2367 {
2368         rte_flow_error_set(error, ENOTSUP,
2369                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2370         return NULL;
2371 }
2372
2373 static int
2374 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
2375                     struct mlx5_flow *dev_flow __rte_unused,
2376                     const struct rte_flow_attr *attr __rte_unused,
2377                     const struct rte_flow_item items[] __rte_unused,
2378                     const struct rte_flow_action actions[] __rte_unused,
2379                     struct rte_flow_error *error)
2380 {
2381         return rte_flow_error_set(error, ENOTSUP,
2382                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2383 }
2384
2385 static int
2386 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
2387                 struct rte_flow *flow __rte_unused,
2388                 struct rte_flow_error *error)
2389 {
2390         return rte_flow_error_set(error, ENOTSUP,
2391                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2392 }
2393
2394 static void
2395 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
2396                  struct rte_flow *flow __rte_unused)
2397 {
2398 }
2399
2400 static void
2401 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
2402                   struct rte_flow *flow __rte_unused)
2403 {
2404 }
2405
2406 static int
2407 flow_null_query(struct rte_eth_dev *dev __rte_unused,
2408                 struct rte_flow *flow __rte_unused,
2409                 const struct rte_flow_action *actions __rte_unused,
2410                 void *data __rte_unused,
2411                 struct rte_flow_error *error)
2412 {
2413         return rte_flow_error_set(error, ENOTSUP,
2414                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2415 }
2416
2417 /* Void driver to protect from null pointer reference. */
2418 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
2419         .validate = flow_null_validate,
2420         .prepare = flow_null_prepare,
2421         .translate = flow_null_translate,
2422         .apply = flow_null_apply,
2423         .remove = flow_null_remove,
2424         .destroy = flow_null_destroy,
2425         .query = flow_null_query,
2426 };
2427
2428 /**
2429  * Select flow driver type according to flow attributes and device
2430  * configuration.
2431  *
2432  * @param[in] dev
2433  *   Pointer to the dev structure.
2434  * @param[in] attr
2435  *   Pointer to the flow attributes.
2436  *
2437  * @return
2438  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
2439  */
2440 static enum mlx5_flow_drv_type
2441 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
2442 {
2443         struct mlx5_priv *priv = dev->data->dev_private;
2444         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
2445
2446         if (attr->transfer && priv->config.dv_esw_en)
2447                 type = MLX5_FLOW_TYPE_DV;
2448         if (!attr->transfer)
2449                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
2450                                                  MLX5_FLOW_TYPE_VERBS;
2451         return type;
2452 }
2453
2454 #define flow_get_drv_ops(type) flow_drv_ops[type]
2455
2456 /**
2457  * Flow driver validation API. This abstracts calling driver specific functions.
2458  * The type of flow driver is determined according to flow attributes.
2459  *
2460  * @param[in] dev
2461  *   Pointer to the dev structure.
2462  * @param[in] attr
2463  *   Pointer to the flow attributes.
2464  * @param[in] items
2465  *   Pointer to the list of items.
2466  * @param[in] actions
2467  *   Pointer to the list of actions.
2468  * @param[in] external
2469  *   This flow rule is created by request external to PMD.
2470  * @param[out] error
2471  *   Pointer to the error structure.
2472  *
2473  * @return
2474  *   0 on success, a negative errno value otherwise and rte_errno is set.
2475  */
2476 static inline int
2477 flow_drv_validate(struct rte_eth_dev *dev,
2478                   const struct rte_flow_attr *attr,
2479                   const struct rte_flow_item items[],
2480                   const struct rte_flow_action actions[],
2481                   bool external, struct rte_flow_error *error)
2482 {
2483         const struct mlx5_flow_driver_ops *fops;
2484         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
2485
2486         fops = flow_get_drv_ops(type);
2487         return fops->validate(dev, attr, items, actions, external, error);
2488 }
2489
2490 /**
2491  * Flow driver preparation API. This abstracts calling driver specific
2492  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2493  * calculates the size of memory required for device flow, allocates the memory,
2494  * initializes the device flow and returns the pointer.
2495  *
2496  * @note
2497  *   This function initializes device flow structure such as dv or verbs in
2498  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2499  *   rest. For example, adding returning device flow to flow->dev_flow list and
2500  *   setting backward reference to the flow should be done out of this function.
2501  *   layers field is not filled either.
2502  *
2503  * @param[in] attr
2504  *   Pointer to the flow attributes.
2505  * @param[in] items
2506  *   Pointer to the list of items.
2507  * @param[in] actions
2508  *   Pointer to the list of actions.
2509  * @param[out] error
2510  *   Pointer to the error structure.
2511  *
2512  * @return
2513  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2514  */
2515 static inline struct mlx5_flow *
2516 flow_drv_prepare(const struct rte_flow *flow,
2517                  const struct rte_flow_attr *attr,
2518                  const struct rte_flow_item items[],
2519                  const struct rte_flow_action actions[],
2520                  struct rte_flow_error *error)
2521 {
2522         const struct mlx5_flow_driver_ops *fops;
2523         enum mlx5_flow_drv_type type = flow->drv_type;
2524
2525         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2526         fops = flow_get_drv_ops(type);
2527         return fops->prepare(attr, items, actions, error);
2528 }
2529
2530 /**
2531  * Flow driver translation API. This abstracts calling driver specific
2532  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2533  * translates a generic flow into a driver flow. flow_drv_prepare() must
2534  * precede.
2535  *
2536  * @note
2537  *   dev_flow->layers could be filled as a result of parsing during translation
2538  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2539  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2540  *   flow->actions could be overwritten even though all the expanded dev_flows
2541  *   have the same actions.
2542  *
2543  * @param[in] dev
2544  *   Pointer to the rte dev structure.
2545  * @param[in, out] dev_flow
2546  *   Pointer to the mlx5 flow.
2547  * @param[in] attr
2548  *   Pointer to the flow attributes.
2549  * @param[in] items
2550  *   Pointer to the list of items.
2551  * @param[in] actions
2552  *   Pointer to the list of actions.
2553  * @param[out] error
2554  *   Pointer to the error structure.
2555  *
2556  * @return
2557  *   0 on success, a negative errno value otherwise and rte_errno is set.
2558  */
2559 static inline int
2560 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2561                    const struct rte_flow_attr *attr,
2562                    const struct rte_flow_item items[],
2563                    const struct rte_flow_action actions[],
2564                    struct rte_flow_error *error)
2565 {
2566         const struct mlx5_flow_driver_ops *fops;
2567         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2568
2569         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2570         fops = flow_get_drv_ops(type);
2571         return fops->translate(dev, dev_flow, attr, items, actions, error);
2572 }
2573
2574 /**
2575  * Flow driver apply API. This abstracts calling driver specific functions.
2576  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2577  * translated driver flows on to device. flow_drv_translate() must precede.
2578  *
2579  * @param[in] dev
2580  *   Pointer to Ethernet device structure.
2581  * @param[in, out] flow
2582  *   Pointer to flow structure.
2583  * @param[out] error
2584  *   Pointer to error structure.
2585  *
2586  * @return
2587  *   0 on success, a negative errno value otherwise and rte_errno is set.
2588  */
2589 static inline int
2590 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2591                struct rte_flow_error *error)
2592 {
2593         const struct mlx5_flow_driver_ops *fops;
2594         enum mlx5_flow_drv_type type = flow->drv_type;
2595
2596         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2597         fops = flow_get_drv_ops(type);
2598         return fops->apply(dev, flow, error);
2599 }
2600
2601 /**
2602  * Flow driver remove API. This abstracts calling driver specific functions.
2603  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2604  * on device. All the resources of the flow should be freed by calling
2605  * flow_drv_destroy().
2606  *
2607  * @param[in] dev
2608  *   Pointer to Ethernet device.
2609  * @param[in, out] flow
2610  *   Pointer to flow structure.
2611  */
2612 static inline void
2613 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2614 {
2615         const struct mlx5_flow_driver_ops *fops;
2616         enum mlx5_flow_drv_type type = flow->drv_type;
2617
2618         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2619         fops = flow_get_drv_ops(type);
2620         fops->remove(dev, flow);
2621 }
2622
2623 /**
2624  * Flow driver destroy API. This abstracts calling driver specific functions.
2625  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2626  * on device and releases resources of the flow.
2627  *
2628  * @param[in] dev
2629  *   Pointer to Ethernet device.
2630  * @param[in, out] flow
2631  *   Pointer to flow structure.
2632  */
2633 static inline void
2634 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2635 {
2636         const struct mlx5_flow_driver_ops *fops;
2637         enum mlx5_flow_drv_type type = flow->drv_type;
2638
2639         flow_mreg_split_qrss_release(dev, flow);
2640         MLX5_ASSERT(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2641         fops = flow_get_drv_ops(type);
2642         fops->destroy(dev, flow);
2643 }
2644
2645 /**
2646  * Validate a flow supported by the NIC.
2647  *
2648  * @see rte_flow_validate()
2649  * @see rte_flow_ops
2650  */
2651 int
2652 mlx5_flow_validate(struct rte_eth_dev *dev,
2653                    const struct rte_flow_attr *attr,
2654                    const struct rte_flow_item items[],
2655                    const struct rte_flow_action actions[],
2656                    struct rte_flow_error *error)
2657 {
2658         int ret;
2659
2660         ret = flow_drv_validate(dev, attr, items, actions, true, error);
2661         if (ret < 0)
2662                 return ret;
2663         return 0;
2664 }
2665
2666 /**
2667  * Get RSS action from the action list.
2668  *
2669  * @param[in] actions
2670  *   Pointer to the list of actions.
2671  *
2672  * @return
2673  *   Pointer to the RSS action if exist, else return NULL.
2674  */
2675 static const struct rte_flow_action_rss*
2676 flow_get_rss_action(const struct rte_flow_action actions[])
2677 {
2678         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2679                 switch (actions->type) {
2680                 case RTE_FLOW_ACTION_TYPE_RSS:
2681                         return (const struct rte_flow_action_rss *)
2682                                actions->conf;
2683                 default:
2684                         break;
2685                 }
2686         }
2687         return NULL;
2688 }
2689
2690 static unsigned int
2691 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2692 {
2693         const struct rte_flow_item *item;
2694         unsigned int has_vlan = 0;
2695
2696         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2697                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2698                         has_vlan = 1;
2699                         break;
2700                 }
2701         }
2702         if (has_vlan)
2703                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2704                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2705         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2706                                MLX5_EXPANSION_ROOT_OUTER;
2707 }
2708
2709 /**
2710  *  Get layer flags from the prefix flow.
2711  *
2712  *  Some flows may be split to several subflows, the prefix subflow gets the
2713  *  match items and the suffix sub flow gets the actions.
2714  *  Some actions need the user defined match item flags to get the detail for
2715  *  the action.
2716  *  This function helps the suffix flow to get the item layer flags from prefix
2717  *  subflow.
2718  *
2719  * @param[in] dev_flow
2720  *   Pointer the created preifx subflow.
2721  *
2722  * @return
2723  *   The layers get from prefix subflow.
2724  */
2725 static inline uint64_t
2726 flow_get_prefix_layer_flags(struct mlx5_flow *dev_flow)
2727 {
2728         uint64_t layers = 0;
2729
2730         /* If no decap actions, use the layers directly. */
2731         if (!(dev_flow->actions & MLX5_FLOW_ACTION_DECAP))
2732                 return dev_flow->layers;
2733         /* Convert L3 layers with decap action. */
2734         if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L3_IPV4)
2735                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
2736         else if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L3_IPV6)
2737                 layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
2738         /* Convert L4 layers with decap action.  */
2739         if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L4_TCP)
2740                 layers |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
2741         else if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L4_UDP)
2742                 layers |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
2743         return layers;
2744 }
2745
2746 /**
2747  * Get metadata split action information.
2748  *
2749  * @param[in] actions
2750  *   Pointer to the list of actions.
2751  * @param[out] qrss
2752  *   Pointer to the return pointer.
2753  * @param[out] qrss_type
2754  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
2755  *   if no QUEUE/RSS is found.
2756  * @param[out] encap_idx
2757  *   Pointer to the index of the encap action if exists, otherwise the last
2758  *   action index.
2759  *
2760  * @return
2761  *   Total number of actions.
2762  */
2763 static int
2764 flow_parse_metadata_split_actions_info(const struct rte_flow_action actions[],
2765                                        const struct rte_flow_action **qrss,
2766                                        int *encap_idx)
2767 {
2768         const struct rte_flow_action_raw_encap *raw_encap;
2769         int actions_n = 0;
2770         int raw_decap_idx = -1;
2771
2772         *encap_idx = -1;
2773         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2774                 switch (actions->type) {
2775                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2776                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2777                         *encap_idx = actions_n;
2778                         break;
2779                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
2780                         raw_decap_idx = actions_n;
2781                         break;
2782                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2783                         raw_encap = actions->conf;
2784                         if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
2785                                 *encap_idx = raw_decap_idx != -1 ?
2786                                                       raw_decap_idx : actions_n;
2787                         break;
2788                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2789                 case RTE_FLOW_ACTION_TYPE_RSS:
2790                         *qrss = actions;
2791                         break;
2792                 default:
2793                         break;
2794                 }
2795                 actions_n++;
2796         }
2797         if (*encap_idx == -1)
2798                 *encap_idx = actions_n;
2799         /* Count RTE_FLOW_ACTION_TYPE_END. */
2800         return actions_n + 1;
2801 }
2802
2803 /**
2804  * Check meter action from the action list.
2805  *
2806  * @param[in] actions
2807  *   Pointer to the list of actions.
2808  * @param[out] mtr
2809  *   Pointer to the meter exist flag.
2810  *
2811  * @return
2812  *   Total number of actions.
2813  */
2814 static int
2815 flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
2816 {
2817         int actions_n = 0;
2818
2819         MLX5_ASSERT(mtr);
2820         *mtr = 0;
2821         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2822                 switch (actions->type) {
2823                 case RTE_FLOW_ACTION_TYPE_METER:
2824                         *mtr = 1;
2825                         break;
2826                 default:
2827                         break;
2828                 }
2829                 actions_n++;
2830         }
2831         /* Count RTE_FLOW_ACTION_TYPE_END. */
2832         return actions_n + 1;
2833 }
2834
2835 /**
2836  * Check if the flow should be splited due to hairpin.
2837  * The reason for the split is that in current HW we can't
2838  * support encap on Rx, so if a flow have encap we move it
2839  * to Tx.
2840  *
2841  * @param dev
2842  *   Pointer to Ethernet device.
2843  * @param[in] attr
2844  *   Flow rule attributes.
2845  * @param[in] actions
2846  *   Associated actions (list terminated by the END action).
2847  *
2848  * @return
2849  *   > 0 the number of actions and the flow should be split,
2850  *   0 when no split required.
2851  */
2852 static int
2853 flow_check_hairpin_split(struct rte_eth_dev *dev,
2854                          const struct rte_flow_attr *attr,
2855                          const struct rte_flow_action actions[])
2856 {
2857         int queue_action = 0;
2858         int action_n = 0;
2859         int encap = 0;
2860         const struct rte_flow_action_queue *queue;
2861         const struct rte_flow_action_rss *rss;
2862         const struct rte_flow_action_raw_encap *raw_encap;
2863
2864         if (!attr->ingress)
2865                 return 0;
2866         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2867                 switch (actions->type) {
2868                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2869                         queue = actions->conf;
2870                         if (queue == NULL)
2871                                 return 0;
2872                         if (mlx5_rxq_get_type(dev, queue->index) !=
2873                             MLX5_RXQ_TYPE_HAIRPIN)
2874                                 return 0;
2875                         queue_action = 1;
2876                         action_n++;
2877                         break;
2878                 case RTE_FLOW_ACTION_TYPE_RSS:
2879                         rss = actions->conf;
2880                         if (rss == NULL || rss->queue_num == 0)
2881                                 return 0;
2882                         if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
2883                             MLX5_RXQ_TYPE_HAIRPIN)
2884                                 return 0;
2885                         queue_action = 1;
2886                         action_n++;
2887                         break;
2888                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2889                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2890                         encap = 1;
2891                         action_n++;
2892                         break;
2893                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2894                         raw_encap = actions->conf;
2895                         if (raw_encap->size >
2896                             (sizeof(struct rte_flow_item_eth) +
2897                              sizeof(struct rte_flow_item_ipv4)))
2898                                 encap = 1;
2899                         action_n++;
2900                         break;
2901                 default:
2902                         action_n++;
2903                         break;
2904                 }
2905         }
2906         if (encap == 1 && queue_action)
2907                 return action_n;
2908         return 0;
2909 }
2910
2911 /* Declare flow create/destroy prototype in advance. */
2912 static struct rte_flow *
2913 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2914                  const struct rte_flow_attr *attr,
2915                  const struct rte_flow_item items[],
2916                  const struct rte_flow_action actions[],
2917                  bool external, struct rte_flow_error *error);
2918
2919 static void
2920 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2921                   struct rte_flow *flow);
2922
2923 /**
2924  * Add a flow of copying flow metadata registers in RX_CP_TBL.
2925  *
2926  * As mark_id is unique, if there's already a registered flow for the mark_id,
2927  * return by increasing the reference counter of the resource. Otherwise, create
2928  * the resource (mcp_res) and flow.
2929  *
2930  * Flow looks like,
2931  *   - If ingress port is ANY and reg_c[1] is mark_id,
2932  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
2933  *
2934  * For default flow (zero mark_id), flow is like,
2935  *   - If ingress port is ANY,
2936  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
2937  *
2938  * @param dev
2939  *   Pointer to Ethernet device.
2940  * @param mark_id
2941  *   ID of MARK action, zero means default flow for META.
2942  * @param[out] error
2943  *   Perform verbose error reporting if not NULL.
2944  *
2945  * @return
2946  *   Associated resource on success, NULL otherwise and rte_errno is set.
2947  */
2948 static struct mlx5_flow_mreg_copy_resource *
2949 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
2950                           struct rte_flow_error *error)
2951 {
2952         struct mlx5_priv *priv = dev->data->dev_private;
2953         struct rte_flow_attr attr = {
2954                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
2955                 .ingress = 1,
2956         };
2957         struct mlx5_rte_flow_item_tag tag_spec = {
2958                 .data = mark_id,
2959         };
2960         struct rte_flow_item items[] = {
2961                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
2962         };
2963         struct rte_flow_action_mark ftag = {
2964                 .id = mark_id,
2965         };
2966         struct mlx5_flow_action_copy_mreg cp_mreg = {
2967                 .dst = REG_B,
2968                 .src = 0,
2969         };
2970         struct rte_flow_action_jump jump = {
2971                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
2972         };
2973         struct rte_flow_action actions[] = {
2974                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
2975         };
2976         struct mlx5_flow_mreg_copy_resource *mcp_res;
2977         int ret;
2978
2979         /* Fill the register fileds in the flow. */
2980         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
2981         if (ret < 0)
2982                 return NULL;
2983         tag_spec.id = ret;
2984         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
2985         if (ret < 0)
2986                 return NULL;
2987         cp_mreg.src = ret;
2988         /* Check if already registered. */
2989         MLX5_ASSERT(priv->mreg_cp_tbl);
2990         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
2991         if (mcp_res) {
2992                 /* For non-default rule. */
2993                 if (mark_id != MLX5_DEFAULT_COPY_ID)
2994                         mcp_res->refcnt++;
2995                 MLX5_ASSERT(mark_id != MLX5_DEFAULT_COPY_ID ||
2996                             mcp_res->refcnt == 1);
2997                 return mcp_res;
2998         }
2999         /* Provide the full width of FLAG specific value. */
3000         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
3001                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
3002         /* Build a new flow. */
3003         if (mark_id != MLX5_DEFAULT_COPY_ID) {
3004                 items[0] = (struct rte_flow_item){
3005                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3006                         .spec = &tag_spec,
3007                 };
3008                 items[1] = (struct rte_flow_item){
3009                         .type = RTE_FLOW_ITEM_TYPE_END,
3010                 };
3011                 actions[0] = (struct rte_flow_action){
3012                         .type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
3013                         .conf = &ftag,
3014                 };
3015                 actions[1] = (struct rte_flow_action){
3016                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3017                         .conf = &cp_mreg,
3018                 };
3019                 actions[2] = (struct rte_flow_action){
3020                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
3021                         .conf = &jump,
3022                 };
3023                 actions[3] = (struct rte_flow_action){
3024                         .type = RTE_FLOW_ACTION_TYPE_END,
3025                 };
3026         } else {
3027                 /* Default rule, wildcard match. */
3028                 attr.priority = MLX5_FLOW_PRIO_RSVD;
3029                 items[0] = (struct rte_flow_item){
3030                         .type = RTE_FLOW_ITEM_TYPE_END,
3031                 };
3032                 actions[0] = (struct rte_flow_action){
3033                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3034                         .conf = &cp_mreg,
3035                 };
3036                 actions[1] = (struct rte_flow_action){
3037                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
3038                         .conf = &jump,
3039                 };
3040                 actions[2] = (struct rte_flow_action){
3041                         .type = RTE_FLOW_ACTION_TYPE_END,
3042                 };
3043         }
3044         /* Build a new entry. */
3045         mcp_res = rte_zmalloc(__func__, sizeof(*mcp_res), 0);
3046         if (!mcp_res) {
3047                 rte_errno = ENOMEM;
3048                 return NULL;
3049         }
3050         /*
3051          * The copy Flows are not included in any list. There
3052          * ones are referenced from other Flows and can not
3053          * be applied, removed, deleted in ardbitrary order
3054          * by list traversing.
3055          */
3056         mcp_res->flow = flow_list_create(dev, NULL, &attr, items,
3057                                          actions, false, error);
3058         if (!mcp_res->flow)
3059                 goto error;
3060         mcp_res->refcnt++;
3061         mcp_res->hlist_ent.key = mark_id;
3062         ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
3063                                 &mcp_res->hlist_ent);
3064         MLX5_ASSERT(!ret);
3065         if (ret)
3066                 goto error;
3067         return mcp_res;
3068 error:
3069         if (mcp_res->flow)
3070                 flow_list_destroy(dev, NULL, mcp_res->flow);
3071         rte_free(mcp_res);
3072         return NULL;
3073 }
3074
3075 /**
3076  * Release flow in RX_CP_TBL.
3077  *
3078  * @param dev
3079  *   Pointer to Ethernet device.
3080  * @flow
3081  *   Parent flow for wich copying is provided.
3082  */
3083 static void
3084 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
3085                           struct rte_flow *flow)
3086 {
3087         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3088         struct mlx5_priv *priv = dev->data->dev_private;
3089
3090         if (!mcp_res || !priv->mreg_cp_tbl)
3091                 return;
3092         if (flow->copy_applied) {
3093                 MLX5_ASSERT(mcp_res->appcnt);
3094                 flow->copy_applied = 0;
3095                 --mcp_res->appcnt;
3096                 if (!mcp_res->appcnt)
3097                         flow_drv_remove(dev, mcp_res->flow);
3098         }
3099         /*
3100          * We do not check availability of metadata registers here,
3101          * because copy resources are not allocated in this case.
3102          */
3103         if (--mcp_res->refcnt)
3104                 return;
3105         MLX5_ASSERT(mcp_res->flow);
3106         flow_list_destroy(dev, NULL, mcp_res->flow);
3107         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3108         rte_free(mcp_res);
3109         flow->mreg_copy = NULL;
3110 }
3111
3112 /**
3113  * Start flow in RX_CP_TBL.
3114  *
3115  * @param dev
3116  *   Pointer to Ethernet device.
3117  * @flow
3118  *   Parent flow for wich copying is provided.
3119  *
3120  * @return
3121  *   0 on success, a negative errno value otherwise and rte_errno is set.
3122  */
3123 static int
3124 flow_mreg_start_copy_action(struct rte_eth_dev *dev,
3125                             struct rte_flow *flow)
3126 {
3127         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3128         int ret;
3129
3130         if (!mcp_res || flow->copy_applied)
3131                 return 0;
3132         if (!mcp_res->appcnt) {
3133                 ret = flow_drv_apply(dev, mcp_res->flow, NULL);
3134                 if (ret)
3135                         return ret;
3136         }
3137         ++mcp_res->appcnt;
3138         flow->copy_applied = 1;
3139         return 0;
3140 }
3141
3142 /**
3143  * Stop flow in RX_CP_TBL.
3144  *
3145  * @param dev
3146  *   Pointer to Ethernet device.
3147  * @flow
3148  *   Parent flow for wich copying is provided.
3149  */
3150 static void
3151 flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
3152                            struct rte_flow *flow)
3153 {
3154         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3155
3156         if (!mcp_res || !flow->copy_applied)
3157                 return;
3158         MLX5_ASSERT(mcp_res->appcnt);
3159         --mcp_res->appcnt;
3160         flow->copy_applied = 0;
3161         if (!mcp_res->appcnt)
3162                 flow_drv_remove(dev, mcp_res->flow);
3163 }
3164
3165 /**
3166  * Remove the default copy action from RX_CP_TBL.
3167  *
3168  * @param dev
3169  *   Pointer to Ethernet device.
3170  */
3171 static void
3172 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
3173 {
3174         struct mlx5_flow_mreg_copy_resource *mcp_res;
3175         struct mlx5_priv *priv = dev->data->dev_private;
3176
3177         /* Check if default flow is registered. */
3178         if (!priv->mreg_cp_tbl)
3179                 return;
3180         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
3181                                             MLX5_DEFAULT_COPY_ID);
3182         if (!mcp_res)
3183                 return;
3184         MLX5_ASSERT(mcp_res->flow);
3185         flow_list_destroy(dev, NULL, mcp_res->flow);
3186         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3187         rte_free(mcp_res);
3188 }
3189
3190 /**
3191  * Add the default copy action in in RX_CP_TBL.
3192  *
3193  * @param dev
3194  *   Pointer to Ethernet device.
3195  * @param[out] error
3196  *   Perform verbose error reporting if not NULL.
3197  *
3198  * @return
3199  *   0 for success, negative value otherwise and rte_errno is set.
3200  */
3201 static int
3202 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
3203                                   struct rte_flow_error *error)
3204 {
3205         struct mlx5_priv *priv = dev->data->dev_private;
3206         struct mlx5_flow_mreg_copy_resource *mcp_res;
3207
3208         /* Check whether extensive metadata feature is engaged. */
3209         if (!priv->config.dv_flow_en ||
3210             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3211             !mlx5_flow_ext_mreg_supported(dev) ||
3212             !priv->sh->dv_regc0_mask)
3213                 return 0;
3214         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
3215         if (!mcp_res)
3216                 return -rte_errno;
3217         return 0;
3218 }
3219
3220 /**
3221  * Add a flow of copying flow metadata registers in RX_CP_TBL.
3222  *
3223  * All the flow having Q/RSS action should be split by
3224  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
3225  * performs the following,
3226  *   - CQE->flow_tag := reg_c[1] (MARK)
3227  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3228  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
3229  * but there should be a flow per each MARK ID set by MARK action.
3230  *
3231  * For the aforementioned reason, if there's a MARK action in flow's action
3232  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
3233  * the MARK ID to CQE's flow_tag like,
3234  *   - If reg_c[1] is mark_id,
3235  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3236  *
3237  * For SET_META action which stores value in reg_c[0], as the destination is
3238  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
3239  * MARK ID means the default flow. The default flow looks like,
3240  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3241  *
3242  * @param dev
3243  *   Pointer to Ethernet device.
3244  * @param flow
3245  *   Pointer to flow structure.
3246  * @param[in] actions
3247  *   Pointer to the list of actions.
3248  * @param[out] error
3249  *   Perform verbose error reporting if not NULL.
3250  *
3251  * @return
3252  *   0 on success, negative value otherwise and rte_errno is set.
3253  */
3254 static int
3255 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
3256                             struct rte_flow *flow,
3257                             const struct rte_flow_action *actions,
3258                             struct rte_flow_error *error)
3259 {
3260         struct mlx5_priv *priv = dev->data->dev_private;
3261         struct mlx5_dev_config *config = &priv->config;
3262         struct mlx5_flow_mreg_copy_resource *mcp_res;
3263         const struct rte_flow_action_mark *mark;
3264
3265         /* Check whether extensive metadata feature is engaged. */
3266         if (!config->dv_flow_en ||
3267             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3268             !mlx5_flow_ext_mreg_supported(dev) ||
3269             !priv->sh->dv_regc0_mask)
3270                 return 0;
3271         /* Find MARK action. */
3272         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3273                 switch (actions->type) {
3274                 case RTE_FLOW_ACTION_TYPE_FLAG:
3275                         mcp_res = flow_mreg_add_copy_action
3276                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
3277                         if (!mcp_res)
3278                                 return -rte_errno;
3279                         flow->mreg_copy = mcp_res;
3280                         if (dev->data->dev_started) {
3281                                 mcp_res->appcnt++;
3282                                 flow->copy_applied = 1;
3283                         }
3284                         return 0;
3285                 case RTE_FLOW_ACTION_TYPE_MARK:
3286                         mark = (const struct rte_flow_action_mark *)
3287                                 actions->conf;
3288                         mcp_res =
3289                                 flow_mreg_add_copy_action(dev, mark->id, error);
3290                         if (!mcp_res)
3291                                 return -rte_errno;
3292                         flow->mreg_copy = mcp_res;
3293                         if (dev->data->dev_started) {
3294                                 mcp_res->appcnt++;
3295                                 flow->copy_applied = 1;
3296                         }
3297                         return 0;
3298                 default:
3299                         break;
3300                 }
3301         }
3302         return 0;
3303 }
3304
3305 #define MLX5_MAX_SPLIT_ACTIONS 24
3306 #define MLX5_MAX_SPLIT_ITEMS 24
3307
3308 /**
3309  * Split the hairpin flow.
3310  * Since HW can't support encap on Rx we move the encap to Tx.
3311  * If the count action is after the encap then we also
3312  * move the count action. in this case the count will also measure
3313  * the outer bytes.
3314  *
3315  * @param dev
3316  *   Pointer to Ethernet device.
3317  * @param[in] actions
3318  *   Associated actions (list terminated by the END action).
3319  * @param[out] actions_rx
3320  *   Rx flow actions.
3321  * @param[out] actions_tx
3322  *   Tx flow actions..
3323  * @param[out] pattern_tx
3324  *   The pattern items for the Tx flow.
3325  * @param[out] flow_id
3326  *   The flow ID connected to this flow.
3327  *
3328  * @return
3329  *   0 on success.
3330  */
3331 static int
3332 flow_hairpin_split(struct rte_eth_dev *dev,
3333                    const struct rte_flow_action actions[],
3334                    struct rte_flow_action actions_rx[],
3335                    struct rte_flow_action actions_tx[],
3336                    struct rte_flow_item pattern_tx[],
3337                    uint32_t *flow_id)
3338 {
3339         struct mlx5_priv *priv = dev->data->dev_private;
3340         const struct rte_flow_action_raw_encap *raw_encap;
3341         const struct rte_flow_action_raw_decap *raw_decap;
3342         struct mlx5_rte_flow_action_set_tag *set_tag;
3343         struct rte_flow_action *tag_action;
3344         struct mlx5_rte_flow_item_tag *tag_item;
3345         struct rte_flow_item *item;
3346         char *addr;
3347         int encap = 0;
3348
3349         mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
3350         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3351                 switch (actions->type) {
3352                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3353                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3354                         rte_memcpy(actions_tx, actions,
3355                                sizeof(struct rte_flow_action));
3356                         actions_tx++;
3357                         break;
3358                 case RTE_FLOW_ACTION_TYPE_COUNT:
3359                         if (encap) {
3360                                 rte_memcpy(actions_tx, actions,
3361                                            sizeof(struct rte_flow_action));
3362                                 actions_tx++;
3363                         } else {
3364                                 rte_memcpy(actions_rx, actions,
3365                                            sizeof(struct rte_flow_action));
3366                                 actions_rx++;
3367                         }
3368                         break;
3369                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3370                         raw_encap = actions->conf;
3371                         if (raw_encap->size >
3372                             (sizeof(struct rte_flow_item_eth) +
3373                              sizeof(struct rte_flow_item_ipv4))) {
3374                                 memcpy(actions_tx, actions,
3375                                        sizeof(struct rte_flow_action));
3376                                 actions_tx++;
3377                                 encap = 1;
3378                         } else {
3379                                 rte_memcpy(actions_rx, actions,
3380                                            sizeof(struct rte_flow_action));
3381                                 actions_rx++;
3382                         }
3383                         break;
3384                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3385                         raw_decap = actions->conf;
3386                         if (raw_decap->size <
3387                             (sizeof(struct rte_flow_item_eth) +
3388                              sizeof(struct rte_flow_item_ipv4))) {
3389                                 memcpy(actions_tx, actions,
3390                                        sizeof(struct rte_flow_action));
3391                                 actions_tx++;
3392                         } else {
3393                                 rte_memcpy(actions_rx, actions,
3394                                            sizeof(struct rte_flow_action));
3395                                 actions_rx++;
3396                         }
3397                         break;
3398                 default:
3399                         rte_memcpy(actions_rx, actions,
3400                                    sizeof(struct rte_flow_action));
3401                         actions_rx++;
3402                         break;
3403                 }
3404         }
3405         /* Add set meta action and end action for the Rx flow. */
3406         tag_action = actions_rx;
3407         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3408         actions_rx++;
3409         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
3410         actions_rx++;
3411         set_tag = (void *)actions_rx;
3412         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
3413         MLX5_ASSERT(set_tag->id > REG_NONE);
3414         set_tag->data = *flow_id;
3415         tag_action->conf = set_tag;
3416         /* Create Tx item list. */
3417         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
3418         addr = (void *)&pattern_tx[2];
3419         item = pattern_tx;
3420         item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3421         tag_item = (void *)addr;
3422         tag_item->data = *flow_id;
3423         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
3424         MLX5_ASSERT(set_tag->id > REG_NONE);
3425         item->spec = tag_item;
3426         addr += sizeof(struct mlx5_rte_flow_item_tag);
3427         tag_item = (void *)addr;
3428         tag_item->data = UINT32_MAX;
3429         tag_item->id = UINT16_MAX;
3430         item->mask = tag_item;
3431         addr += sizeof(struct mlx5_rte_flow_item_tag);
3432         item->last = NULL;
3433         item++;
3434         item->type = RTE_FLOW_ITEM_TYPE_END;
3435         return 0;
3436 }
3437
3438 /**
3439  * The last stage of splitting chain, just creates the subflow
3440  * without any modification.
3441  *
3442  * @param dev
3443  *   Pointer to Ethernet device.
3444  * @param[in] flow
3445  *   Parent flow structure pointer.
3446  * @param[in, out] sub_flow
3447  *   Pointer to return the created subflow, may be NULL.
3448  * @param[in] prefix_layers
3449  *   Prefix subflow layers, may be 0.
3450  * @param[in] attr
3451  *   Flow rule attributes.
3452  * @param[in] items
3453  *   Pattern specification (list terminated by the END pattern item).
3454  * @param[in] actions
3455  *   Associated actions (list terminated by the END action).
3456  * @param[in] external
3457  *   This flow rule is created by request external to PMD.
3458  * @param[out] error
3459  *   Perform verbose error reporting if not NULL.
3460  * @return
3461  *   0 on success, negative value otherwise
3462  */
3463 static int
3464 flow_create_split_inner(struct rte_eth_dev *dev,
3465                         struct rte_flow *flow,
3466                         struct mlx5_flow **sub_flow,
3467                         uint64_t prefix_layers,
3468                         const struct rte_flow_attr *attr,
3469                         const struct rte_flow_item items[],
3470                         const struct rte_flow_action actions[],
3471                         bool external, struct rte_flow_error *error)
3472 {
3473         struct mlx5_flow *dev_flow;
3474
3475         dev_flow = flow_drv_prepare(flow, attr, items, actions, error);
3476         if (!dev_flow)
3477                 return -rte_errno;
3478         dev_flow->flow = flow;
3479         dev_flow->external = external;
3480         /* Subflow object was created, we must include one in the list. */
3481         LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
3482         /*
3483          * If dev_flow is as one of the suffix flow, some actions in suffix
3484          * flow may need some user defined item layer flags.
3485          */
3486         if (prefix_layers)
3487                 dev_flow->layers = prefix_layers;
3488         if (sub_flow)
3489                 *sub_flow = dev_flow;
3490         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
3491 }
3492
3493 /**
3494  * Split the meter flow.
3495  *
3496  * As meter flow will split to three sub flow, other than meter
3497  * action, the other actions make sense to only meter accepts
3498  * the packet. If it need to be dropped, no other additional
3499  * actions should be take.
3500  *
3501  * One kind of special action which decapsulates the L3 tunnel
3502  * header will be in the prefix sub flow, as not to take the
3503  * L3 tunnel header into account.
3504  *
3505  * @param dev
3506  *   Pointer to Ethernet device.
3507  * @param[in] items
3508  *   Pattern specification (list terminated by the END pattern item).
3509  * @param[out] sfx_items
3510  *   Suffix flow match items (list terminated by the END pattern item).
3511  * @param[in] actions
3512  *   Associated actions (list terminated by the END action).
3513  * @param[out] actions_sfx
3514  *   Suffix flow actions.
3515  * @param[out] actions_pre
3516  *   Prefix flow actions.
3517  * @param[out] pattern_sfx
3518  *   The pattern items for the suffix flow.
3519  * @param[out] tag_sfx
3520  *   Pointer to suffix flow tag.
3521  *
3522  * @return
3523  *   0 on success.
3524  */
3525 static int
3526 flow_meter_split_prep(struct rte_eth_dev *dev,
3527                  const struct rte_flow_item items[],
3528                  struct rte_flow_item sfx_items[],
3529                  const struct rte_flow_action actions[],
3530                  struct rte_flow_action actions_sfx[],
3531                  struct rte_flow_action actions_pre[])
3532 {
3533         struct rte_flow_action *tag_action = NULL;
3534         struct rte_flow_item *tag_item;
3535         struct mlx5_rte_flow_action_set_tag *set_tag;
3536         struct rte_flow_error error;
3537         const struct rte_flow_action_raw_encap *raw_encap;
3538         const struct rte_flow_action_raw_decap *raw_decap;
3539         struct mlx5_rte_flow_item_tag *tag_spec;
3540         struct mlx5_rte_flow_item_tag *tag_mask;
3541         uint32_t tag_id;
3542         bool copy_vlan = false;
3543
3544         /* Prepare the actions for prefix and suffix flow. */
3545         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3546                 struct rte_flow_action **action_cur = NULL;
3547
3548                 switch (actions->type) {
3549                 case RTE_FLOW_ACTION_TYPE_METER:
3550                         /* Add the extra tag action first. */
3551                         tag_action = actions_pre;
3552                         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3553                         actions_pre++;
3554                         action_cur = &actions_pre;
3555                         break;
3556                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3557                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3558                         action_cur = &actions_pre;
3559                         break;
3560                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3561                         raw_encap = actions->conf;
3562                         if (raw_encap->size < MLX5_ENCAPSULATION_DECISION_SIZE)
3563                                 action_cur = &actions_pre;
3564                         break;
3565                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3566                         raw_decap = actions->conf;
3567                         if (raw_decap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
3568                                 action_cur = &actions_pre;
3569                         break;
3570                 case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3571                 case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3572                         copy_vlan = true;
3573                         break;
3574                 default:
3575                         break;
3576                 }
3577                 if (!action_cur)
3578                         action_cur = &actions_sfx;
3579                 memcpy(*action_cur, actions, sizeof(struct rte_flow_action));
3580                 (*action_cur)++;
3581         }
3582         /* Add end action to the actions. */
3583         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
3584         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
3585         actions_pre++;
3586         /* Set the tag. */
3587         set_tag = (void *)actions_pre;
3588         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3589         /*
3590          * Get the id from the qrss_pool to make qrss share the id with meter.
3591          */
3592         tag_id = flow_qrss_get_id(dev);
3593         set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
3594         assert(tag_action);
3595         tag_action->conf = set_tag;
3596         /* Prepare the suffix subflow items. */
3597         tag_item = sfx_items++;
3598         for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
3599                 int item_type = items->type;
3600
3601                 switch (item_type) {
3602                 case RTE_FLOW_ITEM_TYPE_PORT_ID:
3603                         memcpy(sfx_items, items, sizeof(*sfx_items));
3604                         sfx_items++;
3605                         break;
3606                 case RTE_FLOW_ITEM_TYPE_VLAN:
3607                         if (copy_vlan) {
3608                                 memcpy(sfx_items, items, sizeof(*sfx_items));
3609                                 /*
3610                                  * Convert to internal match item, it is used
3611                                  * for vlan push and set vid.
3612                                  */
3613                                 sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_VLAN;
3614                                 sfx_items++;
3615                         }
3616                         break;
3617                 default:
3618                         break;
3619                 }
3620         }
3621         sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
3622         sfx_items++;
3623         tag_spec = (struct mlx5_rte_flow_item_tag *)sfx_items;
3624         tag_spec->data = tag_id << MLX5_MTR_COLOR_BITS;
3625         tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3626         tag_mask = tag_spec + 1;
3627         tag_mask->data = 0xffffff00;
3628         tag_item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3629         tag_item->spec = tag_spec;
3630         tag_item->last = NULL;
3631         tag_item->mask = tag_mask;
3632         return tag_id;
3633 }
3634
3635 /**
3636  * Split action list having QUEUE/RSS for metadata register copy.
3637  *
3638  * Once Q/RSS action is detected in user's action list, the flow action
3639  * should be split in order to copy metadata registers, which will happen in
3640  * RX_CP_TBL like,
3641  *   - CQE->flow_tag := reg_c[1] (MARK)
3642  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3643  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
3644  * This is because the last action of each flow must be a terminal action
3645  * (QUEUE, RSS or DROP).
3646  *
3647  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
3648  * stored and kept in the mlx5_flow structure per each sub_flow.
3649  *
3650  * The Q/RSS action is replaced with,
3651  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
3652  * And the following JUMP action is added at the end,
3653  *   - JUMP, to RX_CP_TBL.
3654  *
3655  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
3656  * flow_create_split_metadata() routine. The flow will look like,
3657  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
3658  *
3659  * @param dev
3660  *   Pointer to Ethernet device.
3661  * @param[out] split_actions
3662  *   Pointer to store split actions to jump to CP_TBL.
3663  * @param[in] actions
3664  *   Pointer to the list of original flow actions.
3665  * @param[in] qrss
3666  *   Pointer to the Q/RSS action.
3667  * @param[in] actions_n
3668  *   Number of original actions.
3669  * @param[out] error
3670  *   Perform verbose error reporting if not NULL.
3671  *
3672  * @return
3673  *   non-zero unique flow_id on success, otherwise 0 and
3674  *   error/rte_error are set.
3675  */
3676 static uint32_t
3677 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
3678                           struct rte_flow_action *split_actions,
3679                           const struct rte_flow_action *actions,
3680                           const struct rte_flow_action *qrss,
3681                           int actions_n, struct rte_flow_error *error)
3682 {
3683         struct mlx5_rte_flow_action_set_tag *set_tag;
3684         struct rte_flow_action_jump *jump;
3685         const int qrss_idx = qrss - actions;
3686         uint32_t flow_id = 0;
3687         int ret = 0;
3688
3689         /*
3690          * Given actions will be split
3691          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
3692          * - Add jump to mreg CP_TBL.
3693          * As a result, there will be one more action.
3694          */
3695         ++actions_n;
3696         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
3697         set_tag = (void *)(split_actions + actions_n);
3698         /*
3699          * If tag action is not set to void(it means we are not the meter
3700          * suffix flow), add the tag action. Since meter suffix flow already
3701          * has the tag added.
3702          */
3703         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
3704                 /*
3705                  * Allocate the new subflow ID. This one is unique within
3706                  * device and not shared with representors. Otherwise,
3707                  * we would have to resolve multi-thread access synch
3708                  * issue. Each flow on the shared device is appended
3709                  * with source vport identifier, so the resulting
3710                  * flows will be unique in the shared (by master and
3711                  * representors) domain even if they have coinciding
3712                  * IDs.
3713                  */
3714                 flow_id = flow_qrss_get_id(dev);
3715                 if (!flow_id)
3716                         return rte_flow_error_set(error, ENOMEM,
3717                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3718                                                   NULL, "can't allocate id "
3719                                                   "for split Q/RSS subflow");
3720                 /* Internal SET_TAG action to set flow ID. */
3721                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
3722                         .data = flow_id,
3723                 };
3724                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
3725                 if (ret < 0)
3726                         return ret;
3727                 set_tag->id = ret;
3728                 /* Construct new actions array. */
3729                 /* Replace QUEUE/RSS action. */
3730                 split_actions[qrss_idx] = (struct rte_flow_action){
3731                         .type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
3732                         .conf = set_tag,
3733                 };
3734         }
3735         /* JUMP action to jump to mreg copy table (CP_TBL). */
3736         jump = (void *)(set_tag + 1);
3737         *jump = (struct rte_flow_action_jump){
3738                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
3739         };
3740         split_actions[actions_n - 2] = (struct rte_flow_action){
3741                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
3742                 .conf = jump,
3743         };
3744         split_actions[actions_n - 1] = (struct rte_flow_action){
3745                 .type = RTE_FLOW_ACTION_TYPE_END,
3746         };
3747         return flow_id;
3748 }
3749
3750 /**
3751  * Extend the given action list for Tx metadata copy.
3752  *
3753  * Copy the given action list to the ext_actions and add flow metadata register
3754  * copy action in order to copy reg_a set by WQE to reg_c[0].
3755  *
3756  * @param[out] ext_actions
3757  *   Pointer to the extended action list.
3758  * @param[in] actions
3759  *   Pointer to the list of actions.
3760  * @param[in] actions_n
3761  *   Number of actions in the list.
3762  * @param[out] error
3763  *   Perform verbose error reporting if not NULL.
3764  * @param[in] encap_idx
3765  *   The encap action inndex.
3766  *
3767  * @return
3768  *   0 on success, negative value otherwise
3769  */
3770 static int
3771 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
3772                        struct rte_flow_action *ext_actions,
3773                        const struct rte_flow_action *actions,
3774                        int actions_n, struct rte_flow_error *error,
3775                        int encap_idx)
3776 {
3777         struct mlx5_flow_action_copy_mreg *cp_mreg =
3778                 (struct mlx5_flow_action_copy_mreg *)
3779                         (ext_actions + actions_n + 1);
3780         int ret;
3781
3782         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
3783         if (ret < 0)
3784                 return ret;
3785         cp_mreg->dst = ret;
3786         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
3787         if (ret < 0)
3788                 return ret;
3789         cp_mreg->src = ret;
3790         if (encap_idx != 0)
3791                 memcpy(ext_actions, actions, sizeof(*ext_actions) * encap_idx);
3792         if (encap_idx == actions_n - 1) {
3793                 ext_actions[actions_n - 1] = (struct rte_flow_action){
3794                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3795                         .conf = cp_mreg,
3796                 };
3797                 ext_actions[actions_n] = (struct rte_flow_action){
3798                         .type = RTE_FLOW_ACTION_TYPE_END,
3799                 };
3800         } else {
3801                 ext_actions[encap_idx] = (struct rte_flow_action){
3802                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3803                         .conf = cp_mreg,
3804                 };
3805                 memcpy(ext_actions + encap_idx + 1, actions + encap_idx,
3806                                 sizeof(*ext_actions) * (actions_n - encap_idx));
3807         }
3808         return 0;
3809 }
3810
3811 /**
3812  * The splitting for metadata feature.
3813  *
3814  * - Q/RSS action on NIC Rx should be split in order to pass by
3815  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
3816  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
3817  *
3818  * - All the actions on NIC Tx should have a mreg copy action to
3819  *   copy reg_a from WQE to reg_c[0].
3820  *
3821  * @param dev
3822  *   Pointer to Ethernet device.
3823  * @param[in] flow
3824  *   Parent flow structure pointer.
3825  * @param[in] prefix_layers
3826  *   Prefix flow layer flags.
3827  * @param[in] attr
3828  *   Flow rule attributes.
3829  * @param[in] items
3830  *   Pattern specification (list terminated by the END pattern item).
3831  * @param[in] actions
3832  *   Associated actions (list terminated by the END action).
3833  * @param[in] external
3834  *   This flow rule is created by request external to PMD.
3835  * @param[out] error
3836  *   Perform verbose error reporting if not NULL.
3837  * @return
3838  *   0 on success, negative value otherwise
3839  */
3840 static int
3841 flow_create_split_metadata(struct rte_eth_dev *dev,
3842                            struct rte_flow *flow,
3843                            uint64_t prefix_layers,
3844                            const struct rte_flow_attr *attr,
3845                            const struct rte_flow_item items[],
3846                            const struct rte_flow_action actions[],
3847                            bool external, struct rte_flow_error *error)
3848 {
3849         struct mlx5_priv *priv = dev->data->dev_private;
3850         struct mlx5_dev_config *config = &priv->config;
3851         const struct rte_flow_action *qrss = NULL;
3852         struct rte_flow_action *ext_actions = NULL;
3853         struct mlx5_flow *dev_flow = NULL;
3854         uint32_t qrss_id = 0;
3855         int mtr_sfx = 0;
3856         size_t act_size;
3857         int actions_n;
3858         int encap_idx;
3859         int ret;
3860
3861         /* Check whether extensive metadata feature is engaged. */
3862         if (!config->dv_flow_en ||
3863             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3864             !mlx5_flow_ext_mreg_supported(dev))
3865                 return flow_create_split_inner(dev, flow, NULL, prefix_layers,
3866                                                attr, items, actions, external,
3867                                                error);
3868         actions_n = flow_parse_metadata_split_actions_info(actions, &qrss,
3869                                                            &encap_idx);
3870         if (qrss) {
3871                 /* Exclude hairpin flows from splitting. */
3872                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
3873                         const struct rte_flow_action_queue *queue;
3874
3875                         queue = qrss->conf;
3876                         if (mlx5_rxq_get_type(dev, queue->index) ==
3877                             MLX5_RXQ_TYPE_HAIRPIN)
3878                                 qrss = NULL;
3879                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
3880                         const struct rte_flow_action_rss *rss;
3881
3882                         rss = qrss->conf;
3883                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
3884                             MLX5_RXQ_TYPE_HAIRPIN)
3885                                 qrss = NULL;
3886                 }
3887         }
3888         if (qrss) {
3889                 /* Check if it is in meter suffix table. */
3890                 mtr_sfx = attr->group == (attr->transfer ?
3891                           (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
3892                           MLX5_FLOW_TABLE_LEVEL_SUFFIX);
3893                 /*
3894                  * Q/RSS action on NIC Rx should be split in order to pass by
3895                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
3896                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
3897                  */
3898                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3899                            sizeof(struct rte_flow_action_set_tag) +
3900                            sizeof(struct rte_flow_action_jump);
3901                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3902                 if (!ext_actions)
3903                         return rte_flow_error_set(error, ENOMEM,
3904                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3905                                                   NULL, "no memory to split "
3906                                                   "metadata flow");
3907                 /*
3908                  * If we are the suffix flow of meter, tag already exist.
3909                  * Set the tag action to void.
3910                  */
3911                 if (mtr_sfx)
3912                         ext_actions[qrss - actions].type =
3913                                                 RTE_FLOW_ACTION_TYPE_VOID;
3914                 else
3915                         ext_actions[qrss - actions].type =
3916                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3917                 /*
3918                  * Create the new actions list with removed Q/RSS action
3919                  * and appended set tag and jump to register copy table
3920                  * (RX_CP_TBL). We should preallocate unique tag ID here
3921                  * in advance, because it is needed for set tag action.
3922                  */
3923                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
3924                                                     qrss, actions_n, error);
3925                 if (!mtr_sfx && !qrss_id) {
3926                         ret = -rte_errno;
3927                         goto exit;
3928                 }
3929         } else if (attr->egress && !attr->transfer) {
3930                 /*
3931                  * All the actions on NIC Tx should have a metadata register
3932                  * copy action to copy reg_a from WQE to reg_c[meta]
3933                  */
3934                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3935                            sizeof(struct mlx5_flow_action_copy_mreg);
3936                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3937                 if (!ext_actions)
3938                         return rte_flow_error_set(error, ENOMEM,
3939                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3940                                                   NULL, "no memory to split "
3941                                                   "metadata flow");
3942                 /* Create the action list appended with copy register. */
3943                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
3944                                              actions_n, error, encap_idx);
3945                 if (ret < 0)
3946                         goto exit;
3947         }
3948         /* Add the unmodified original or prefix subflow. */
3949         ret = flow_create_split_inner(dev, flow, &dev_flow, prefix_layers, attr,
3950                                       items, ext_actions ? ext_actions :
3951                                       actions, external, error);
3952         if (ret < 0)
3953                 goto exit;
3954         MLX5_ASSERT(dev_flow);
3955         if (qrss) {
3956                 const struct rte_flow_attr q_attr = {
3957                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
3958                         .ingress = 1,
3959                 };
3960                 /* Internal PMD action to set register. */
3961                 struct mlx5_rte_flow_item_tag q_tag_spec = {
3962                         .data = qrss_id,
3963                         .id = 0,
3964                 };
3965                 struct rte_flow_item q_items[] = {
3966                         {
3967                                 .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3968                                 .spec = &q_tag_spec,
3969                                 .last = NULL,
3970                                 .mask = NULL,
3971                         },
3972                         {
3973                                 .type = RTE_FLOW_ITEM_TYPE_END,
3974                         },
3975                 };
3976                 struct rte_flow_action q_actions[] = {
3977                         {
3978                                 .type = qrss->type,
3979                                 .conf = qrss->conf,
3980                         },
3981                         {
3982                                 .type = RTE_FLOW_ACTION_TYPE_END,
3983                         },
3984                 };
3985                 uint64_t layers = flow_get_prefix_layer_flags(dev_flow);
3986
3987                 /*
3988                  * Configure the tag item only if there is no meter subflow.
3989                  * Since tag is already marked in the meter suffix subflow
3990                  * we can just use the meter suffix items as is.
3991                  */
3992                 if (qrss_id) {
3993                         /* Not meter subflow. */
3994                         MLX5_ASSERT(!mtr_sfx);
3995                         /*
3996                          * Put unique id in prefix flow due to it is destroyed
3997                          * after suffix flow and id will be freed after there
3998                          * is no actual flows with this id and identifier
3999                          * reallocation becomes possible (for example, for
4000                          * other flows in other threads).
4001                          */
4002                         dev_flow->qrss_id = qrss_id;
4003                         qrss_id = 0;
4004                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
4005                                                    error);
4006                         if (ret < 0)
4007                                 goto exit;
4008                         q_tag_spec.id = ret;
4009                 }
4010                 dev_flow = NULL;
4011                 /* Add suffix subflow to execute Q/RSS. */
4012                 ret = flow_create_split_inner(dev, flow, &dev_flow, layers,
4013                                               &q_attr, mtr_sfx ? items :
4014                                               q_items, q_actions,
4015                                               external, error);
4016                 if (ret < 0)
4017                         goto exit;
4018                 MLX5_ASSERT(dev_flow);
4019         }
4020
4021 exit:
4022         /*
4023          * We do not destroy the partially created sub_flows in case of error.
4024          * These ones are included into parent flow list and will be destroyed
4025          * by flow_drv_destroy.
4026          */
4027         flow_qrss_free_id(dev, qrss_id);
4028         rte_free(ext_actions);
4029         return ret;
4030 }
4031
4032 /**
4033  * The splitting for meter feature.
4034  *
4035  * - The meter flow will be split to two flows as prefix and
4036  *   suffix flow. The packets make sense only it pass the prefix
4037  *   meter action.
4038  *
4039  * - Reg_C_5 is used for the packet to match betweend prefix and
4040  *   suffix flow.
4041  *
4042  * @param dev
4043  *   Pointer to Ethernet device.
4044  * @param[in] flow
4045  *   Parent flow structure pointer.
4046  * @param[in] attr
4047  *   Flow rule attributes.
4048  * @param[in] items
4049  *   Pattern specification (list terminated by the END pattern item).
4050  * @param[in] actions
4051  *   Associated actions (list terminated by the END action).
4052  * @param[in] external
4053  *   This flow rule is created by request external to PMD.
4054  * @param[out] error
4055  *   Perform verbose error reporting if not NULL.
4056  * @return
4057  *   0 on success, negative value otherwise
4058  */
4059 static int
4060 flow_create_split_meter(struct rte_eth_dev *dev,
4061                            struct rte_flow *flow,
4062                            const struct rte_flow_attr *attr,
4063                            const struct rte_flow_item items[],
4064                            const struct rte_flow_action actions[],
4065                            bool external, struct rte_flow_error *error)
4066 {
4067         struct mlx5_priv *priv = dev->data->dev_private;
4068         struct rte_flow_action *sfx_actions = NULL;
4069         struct rte_flow_action *pre_actions = NULL;
4070         struct rte_flow_item *sfx_items = NULL;
4071         struct mlx5_flow *dev_flow = NULL;
4072         struct rte_flow_attr sfx_attr = *attr;
4073         uint32_t mtr = 0;
4074         uint32_t mtr_tag_id = 0;
4075         size_t act_size;
4076         size_t item_size;
4077         int actions_n = 0;
4078         int ret;
4079
4080         if (priv->mtr_en)
4081                 actions_n = flow_check_meter_action(actions, &mtr);
4082         if (mtr) {
4083                 /* The five prefix actions: meter, decap, encap, tag, end. */
4084                 act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
4085                            sizeof(struct mlx5_rte_flow_action_set_tag);
4086                 /* tag, vlan, port id, end. */
4087 #define METER_SUFFIX_ITEM 4
4088                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
4089                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
4090                 sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
4091                 if (!sfx_actions)
4092                         return rte_flow_error_set(error, ENOMEM,
4093                                                   RTE_FLOW_ERROR_TYPE_ACTION,
4094                                                   NULL, "no memory to split "
4095                                                   "meter flow");
4096                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
4097                              act_size);
4098                 pre_actions = sfx_actions + actions_n;
4099                 mtr_tag_id = flow_meter_split_prep(dev, items, sfx_items,
4100                                                    actions, sfx_actions,
4101                                                    pre_actions);
4102                 if (!mtr_tag_id) {
4103                         ret = -rte_errno;
4104                         goto exit;
4105                 }
4106                 /* Add the prefix subflow. */
4107                 ret = flow_create_split_inner(dev, flow, &dev_flow, 0, attr,
4108                                               items, pre_actions, external,
4109                                               error);
4110                 if (ret) {
4111                         ret = -rte_errno;
4112                         goto exit;
4113                 }
4114                 dev_flow->mtr_flow_id = mtr_tag_id;
4115                 /* Setting the sfx group atrr. */
4116                 sfx_attr.group = sfx_attr.transfer ?
4117                                 (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
4118                                  MLX5_FLOW_TABLE_LEVEL_SUFFIX;
4119         }
4120         /* Add the prefix subflow. */
4121         ret = flow_create_split_metadata(dev, flow, dev_flow ?
4122                                          flow_get_prefix_layer_flags(dev_flow) :
4123                                          0, &sfx_attr,
4124                                          sfx_items ? sfx_items : items,
4125                                          sfx_actions ? sfx_actions : actions,
4126                                          external, error);
4127 exit:
4128         if (sfx_actions)
4129                 rte_free(sfx_actions);
4130         return ret;
4131 }
4132
4133 /**
4134  * Split the flow to subflow set. The splitters might be linked
4135  * in the chain, like this:
4136  * flow_create_split_outer() calls:
4137  *   flow_create_split_meter() calls:
4138  *     flow_create_split_metadata(meter_subflow_0) calls:
4139  *       flow_create_split_inner(metadata_subflow_0)
4140  *       flow_create_split_inner(metadata_subflow_1)
4141  *       flow_create_split_inner(metadata_subflow_2)
4142  *     flow_create_split_metadata(meter_subflow_1) calls:
4143  *       flow_create_split_inner(metadata_subflow_0)
4144  *       flow_create_split_inner(metadata_subflow_1)
4145  *       flow_create_split_inner(metadata_subflow_2)
4146  *
4147  * This provide flexible way to add new levels of flow splitting.
4148  * The all of successfully created subflows are included to the
4149  * parent flow dev_flow list.
4150  *
4151  * @param dev
4152  *   Pointer to Ethernet device.
4153  * @param[in] flow
4154  *   Parent flow structure pointer.
4155  * @param[in] attr
4156  *   Flow rule attributes.
4157  * @param[in] items
4158  *   Pattern specification (list terminated by the END pattern item).
4159  * @param[in] actions
4160  *   Associated actions (list terminated by the END action).
4161  * @param[in] external
4162  *   This flow rule is created by request external to PMD.
4163  * @param[out] error
4164  *   Perform verbose error reporting if not NULL.
4165  * @return
4166  *   0 on success, negative value otherwise
4167  */
4168 static int
4169 flow_create_split_outer(struct rte_eth_dev *dev,
4170                         struct rte_flow *flow,
4171                         const struct rte_flow_attr *attr,
4172                         const struct rte_flow_item items[],
4173                         const struct rte_flow_action actions[],
4174                         bool external, struct rte_flow_error *error)
4175 {
4176         int ret;
4177
4178         ret = flow_create_split_meter(dev, flow, attr, items,
4179                                          actions, external, error);
4180         MLX5_ASSERT(ret <= 0);
4181         return ret;
4182 }
4183
4184 /**
4185  * Create a flow and add it to @p list.
4186  *
4187  * @param dev
4188  *   Pointer to Ethernet device.
4189  * @param list
4190  *   Pointer to a TAILQ flow list. If this parameter NULL,
4191  *   no list insertion occurred, flow is just created,
4192  *   this is caller's responsibility to track the
4193  *   created flow.
4194  * @param[in] attr
4195  *   Flow rule attributes.
4196  * @param[in] items
4197  *   Pattern specification (list terminated by the END pattern item).
4198  * @param[in] actions
4199  *   Associated actions (list terminated by the END action).
4200  * @param[in] external
4201  *   This flow rule is created by request external to PMD.
4202  * @param[out] error
4203  *   Perform verbose error reporting if not NULL.
4204  *
4205  * @return
4206  *   A flow on success, NULL otherwise and rte_errno is set.
4207  */
4208 static struct rte_flow *
4209 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
4210                  const struct rte_flow_attr *attr,
4211                  const struct rte_flow_item items[],
4212                  const struct rte_flow_action actions[],
4213                  bool external, struct rte_flow_error *error)
4214 {
4215         struct mlx5_priv *priv = dev->data->dev_private;
4216         struct rte_flow *flow = NULL;
4217         struct mlx5_flow *dev_flow;
4218         const struct rte_flow_action_rss *rss;
4219         union {
4220                 struct rte_flow_expand_rss buf;
4221                 uint8_t buffer[2048];
4222         } expand_buffer;
4223         union {
4224                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4225                 uint8_t buffer[2048];
4226         } actions_rx;
4227         union {
4228                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4229                 uint8_t buffer[2048];
4230         } actions_hairpin_tx;
4231         union {
4232                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
4233                 uint8_t buffer[2048];
4234         } items_tx;
4235         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
4236         const struct rte_flow_action *p_actions_rx = actions;
4237         uint32_t i;
4238         uint32_t flow_size;
4239         int hairpin_flow = 0;
4240         uint32_t hairpin_id = 0;
4241         struct rte_flow_attr attr_tx = { .priority = 0 };
4242         int ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
4243                                     error);
4244
4245         if (ret < 0)
4246                 return NULL;
4247         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4248         if (hairpin_flow > 0) {
4249                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
4250                         rte_errno = EINVAL;
4251                         return NULL;
4252                 }
4253                 flow_hairpin_split(dev, actions, actions_rx.actions,
4254                                    actions_hairpin_tx.actions, items_tx.items,
4255                                    &hairpin_id);
4256                 p_actions_rx = actions_rx.actions;
4257         }
4258         flow_size = sizeof(struct rte_flow);
4259         rss = flow_get_rss_action(p_actions_rx);
4260         if (rss)
4261                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
4262                                             sizeof(void *));
4263         else
4264                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
4265         flow = rte_calloc(__func__, 1, flow_size, 0);
4266         if (!flow) {
4267                 rte_errno = ENOMEM;
4268                 goto error_before_flow;
4269         }
4270         flow->drv_type = flow_get_drv_type(dev, attr);
4271         if (hairpin_id != 0)
4272                 flow->hairpin_flow_id = hairpin_id;
4273         MLX5_ASSERT(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
4274                     flow->drv_type < MLX5_FLOW_TYPE_MAX);
4275         flow->rss.queue = (void *)(flow + 1);
4276         if (rss) {
4277                 /*
4278                  * The following information is required by
4279                  * mlx5_flow_hashfields_adjust() in advance.
4280                  */
4281                 flow->rss.level = rss->level;
4282                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
4283                 flow->rss.types = !rss->types ? ETH_RSS_IP : rss->types;
4284         }
4285         LIST_INIT(&flow->dev_flows);
4286         if (rss && rss->types) {
4287                 unsigned int graph_root;
4288
4289                 graph_root = find_graph_root(items, rss->level);
4290                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
4291                                           items, rss->types,
4292                                           mlx5_support_expansion,
4293                                           graph_root);
4294                 MLX5_ASSERT(ret > 0 &&
4295                        (unsigned int)ret < sizeof(expand_buffer.buffer));
4296         } else {
4297                 buf->entries = 1;
4298                 buf->entry[0].pattern = (void *)(uintptr_t)items;
4299         }
4300         for (i = 0; i < buf->entries; ++i) {
4301                 /*
4302                  * The splitter may create multiple dev_flows,
4303                  * depending on configuration. In the simplest
4304                  * case it just creates unmodified original flow.
4305                  */
4306                 ret = flow_create_split_outer(dev, flow, attr,
4307                                               buf->entry[i].pattern,
4308                                               p_actions_rx, external,
4309                                               error);
4310                 if (ret < 0)
4311                         goto error;
4312         }
4313         /* Create the tx flow. */
4314         if (hairpin_flow) {
4315                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
4316                 attr_tx.ingress = 0;
4317                 attr_tx.egress = 1;
4318                 dev_flow = flow_drv_prepare(flow, &attr_tx, items_tx.items,
4319                                             actions_hairpin_tx.actions, error);
4320                 if (!dev_flow)
4321                         goto error;
4322                 dev_flow->flow = flow;
4323                 dev_flow->external = 0;
4324                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
4325                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
4326                                          items_tx.items,
4327                                          actions_hairpin_tx.actions, error);
4328                 if (ret < 0)
4329                         goto error;
4330         }
4331         /*
4332          * Update the metadata register copy table. If extensive
4333          * metadata feature is enabled and registers are supported
4334          * we might create the extra rte_flow for each unique
4335          * MARK/FLAG action ID.
4336          *
4337          * The table is updated for ingress Flows only, because
4338          * the egress Flows belong to the different device and
4339          * copy table should be updated in peer NIC Rx domain.
4340          */
4341         if (attr->ingress &&
4342             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
4343                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
4344                 if (ret)
4345                         goto error;
4346         }
4347         if (dev->data->dev_started) {
4348                 ret = flow_drv_apply(dev, flow, error);
4349                 if (ret < 0)
4350                         goto error;
4351         }
4352         if (list)
4353                 TAILQ_INSERT_TAIL(list, flow, next);
4354         flow_rxq_flags_set(dev, flow);
4355         return flow;
4356 error_before_flow:
4357         if (hairpin_id)
4358                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4359                                      hairpin_id);
4360         return NULL;
4361 error:
4362         MLX5_ASSERT(flow);
4363         flow_mreg_del_copy_action(dev, flow);
4364         ret = rte_errno; /* Save rte_errno before cleanup. */
4365         if (flow->hairpin_flow_id)
4366                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4367                                      flow->hairpin_flow_id);
4368         MLX5_ASSERT(flow);
4369         flow_drv_destroy(dev, flow);
4370         rte_free(flow);
4371         rte_errno = ret; /* Restore rte_errno. */
4372         return NULL;
4373 }
4374
4375 /**
4376  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
4377  * incoming packets to table 1.
4378  *
4379  * Other flow rules, requested for group n, will be created in
4380  * e-switch table n+1.
4381  * Jump action to e-switch group n will be created to group n+1.
4382  *
4383  * Used when working in switchdev mode, to utilise advantages of table 1
4384  * and above.
4385  *
4386  * @param dev
4387  *   Pointer to Ethernet device.
4388  *
4389  * @return
4390  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
4391  */
4392 struct rte_flow *
4393 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
4394 {
4395         const struct rte_flow_attr attr = {
4396                 .group = 0,
4397                 .priority = 0,
4398                 .ingress = 1,
4399                 .egress = 0,
4400                 .transfer = 1,
4401         };
4402         const struct rte_flow_item pattern = {
4403                 .type = RTE_FLOW_ITEM_TYPE_END,
4404         };
4405         struct rte_flow_action_jump jump = {
4406                 .group = 1,
4407         };
4408         const struct rte_flow_action actions[] = {
4409                 {
4410                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4411                         .conf = &jump,
4412                 },
4413                 {
4414                         .type = RTE_FLOW_ACTION_TYPE_END,
4415                 },
4416         };
4417         struct mlx5_priv *priv = dev->data->dev_private;
4418         struct rte_flow_error error;
4419
4420         return flow_list_create(dev, &priv->ctrl_flows, &attr, &pattern,
4421                                 actions, false, &error);
4422 }
4423
4424 /**
4425  * Create a flow.
4426  *
4427  * @see rte_flow_create()
4428  * @see rte_flow_ops
4429  */
4430 struct rte_flow *
4431 mlx5_flow_create(struct rte_eth_dev *dev,
4432                  const struct rte_flow_attr *attr,
4433                  const struct rte_flow_item items[],
4434                  const struct rte_flow_action actions[],
4435                  struct rte_flow_error *error)
4436 {
4437         struct mlx5_priv *priv = dev->data->dev_private;
4438
4439         return flow_list_create(dev, &priv->flows,
4440                                 attr, items, actions, true, error);
4441 }
4442
4443 /**
4444  * Destroy a flow in a list.
4445  *
4446  * @param dev
4447  *   Pointer to Ethernet device.
4448  * @param list
4449  *   Pointer to a TAILQ flow list. If this parameter NULL,
4450  *   there is no flow removal from the list.
4451  * @param[in] flow
4452  *   Flow to destroy.
4453  */
4454 static void
4455 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
4456                   struct rte_flow *flow)
4457 {
4458         struct mlx5_priv *priv = dev->data->dev_private;
4459
4460         /*
4461          * Update RX queue flags only if port is started, otherwise it is
4462          * already clean.
4463          */
4464         if (dev->data->dev_started)
4465                 flow_rxq_flags_trim(dev, flow);
4466         if (flow->hairpin_flow_id)
4467                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4468                                      flow->hairpin_flow_id);
4469         flow_drv_destroy(dev, flow);
4470         if (list)
4471                 TAILQ_REMOVE(list, flow, next);
4472         flow_mreg_del_copy_action(dev, flow);
4473         rte_free(flow->fdir);
4474         rte_free(flow);
4475 }
4476
4477 /**
4478  * Destroy all flows.
4479  *
4480  * @param dev
4481  *   Pointer to Ethernet device.
4482  * @param list
4483  *   Pointer to a TAILQ flow list.
4484  */
4485 void
4486 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
4487 {
4488         while (!TAILQ_EMPTY(list)) {
4489                 struct rte_flow *flow;
4490
4491                 flow = TAILQ_FIRST(list);
4492                 flow_list_destroy(dev, list, flow);
4493         }
4494 }
4495
4496 /**
4497  * Remove all flows.
4498  *
4499  * @param dev
4500  *   Pointer to Ethernet device.
4501  * @param list
4502  *   Pointer to a TAILQ flow list.
4503  */
4504 void
4505 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
4506 {
4507         struct rte_flow *flow;
4508
4509         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
4510                 flow_drv_remove(dev, flow);
4511                 flow_mreg_stop_copy_action(dev, flow);
4512         }
4513         flow_mreg_del_default_copy_action(dev);
4514         flow_rxq_flags_clear(dev);
4515 }
4516
4517 /**
4518  * Add all flows.
4519  *
4520  * @param dev
4521  *   Pointer to Ethernet device.
4522  * @param list
4523  *   Pointer to a TAILQ flow list.
4524  *
4525  * @return
4526  *   0 on success, a negative errno value otherwise and rte_errno is set.
4527  */
4528 int
4529 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
4530 {
4531         struct rte_flow *flow;
4532         struct rte_flow_error error;
4533         int ret = 0;
4534
4535         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4536         ret = flow_mreg_add_default_copy_action(dev, &error);
4537         if (ret < 0)
4538                 return -rte_errno;
4539         /* Apply Flows created by application. */
4540         TAILQ_FOREACH(flow, list, next) {
4541                 ret = flow_mreg_start_copy_action(dev, flow);
4542                 if (ret < 0)
4543                         goto error;
4544                 ret = flow_drv_apply(dev, flow, &error);
4545                 if (ret < 0)
4546                         goto error;
4547                 flow_rxq_flags_set(dev, flow);
4548         }
4549         return 0;
4550 error:
4551         ret = rte_errno; /* Save rte_errno before cleanup. */
4552         mlx5_flow_stop(dev, list);
4553         rte_errno = ret; /* Restore rte_errno. */
4554         return -rte_errno;
4555 }
4556
4557 /**
4558  * Verify the flow list is empty
4559  *
4560  * @param dev
4561  *  Pointer to Ethernet device.
4562  *
4563  * @return the number of flows not released.
4564  */
4565 int
4566 mlx5_flow_verify(struct rte_eth_dev *dev)
4567 {
4568         struct mlx5_priv *priv = dev->data->dev_private;
4569         struct rte_flow *flow;
4570         int ret = 0;
4571
4572         TAILQ_FOREACH(flow, &priv->flows, next) {
4573                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
4574                         dev->data->port_id, (void *)flow);
4575                 ++ret;
4576         }
4577         return ret;
4578 }
4579
4580 /**
4581  * Enable default hairpin egress flow.
4582  *
4583  * @param dev
4584  *   Pointer to Ethernet device.
4585  * @param queue
4586  *   The queue index.
4587  *
4588  * @return
4589  *   0 on success, a negative errno value otherwise and rte_errno is set.
4590  */
4591 int
4592 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
4593                             uint32_t queue)
4594 {
4595         struct mlx5_priv *priv = dev->data->dev_private;
4596         const struct rte_flow_attr attr = {
4597                 .egress = 1,
4598                 .priority = 0,
4599         };
4600         struct mlx5_rte_flow_item_tx_queue queue_spec = {
4601                 .queue = queue,
4602         };
4603         struct mlx5_rte_flow_item_tx_queue queue_mask = {
4604                 .queue = UINT32_MAX,
4605         };
4606         struct rte_flow_item items[] = {
4607                 {
4608                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
4609                         .spec = &queue_spec,
4610                         .last = NULL,
4611                         .mask = &queue_mask,
4612                 },
4613                 {
4614                         .type = RTE_FLOW_ITEM_TYPE_END,
4615                 },
4616         };
4617         struct rte_flow_action_jump jump = {
4618                 .group = MLX5_HAIRPIN_TX_TABLE,
4619         };
4620         struct rte_flow_action actions[2];
4621         struct rte_flow *flow;
4622         struct rte_flow_error error;
4623
4624         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
4625         actions[0].conf = &jump;
4626         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
4627         flow = flow_list_create(dev, &priv->ctrl_flows,
4628                                 &attr, items, actions, false, &error);
4629         if (!flow) {
4630                 DRV_LOG(DEBUG,
4631                         "Failed to create ctrl flow: rte_errno(%d),"
4632                         " type(%d), message(%s)",
4633                         rte_errno, error.type,
4634                         error.message ? error.message : " (no stated reason)");
4635                 return -rte_errno;
4636         }
4637         return 0;
4638 }
4639
4640 /**
4641  * Enable a control flow configured from the control plane.
4642  *
4643  * @param dev
4644  *   Pointer to Ethernet device.
4645  * @param eth_spec
4646  *   An Ethernet flow spec to apply.
4647  * @param eth_mask
4648  *   An Ethernet flow mask to apply.
4649  * @param vlan_spec
4650  *   A VLAN flow spec to apply.
4651  * @param vlan_mask
4652  *   A VLAN flow mask to apply.
4653  *
4654  * @return
4655  *   0 on success, a negative errno value otherwise and rte_errno is set.
4656  */
4657 int
4658 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
4659                     struct rte_flow_item_eth *eth_spec,
4660                     struct rte_flow_item_eth *eth_mask,
4661                     struct rte_flow_item_vlan *vlan_spec,
4662                     struct rte_flow_item_vlan *vlan_mask)
4663 {
4664         struct mlx5_priv *priv = dev->data->dev_private;
4665         const struct rte_flow_attr attr = {
4666                 .ingress = 1,
4667                 .priority = MLX5_FLOW_PRIO_RSVD,
4668         };
4669         struct rte_flow_item items[] = {
4670                 {
4671                         .type = RTE_FLOW_ITEM_TYPE_ETH,
4672                         .spec = eth_spec,
4673                         .last = NULL,
4674                         .mask = eth_mask,
4675                 },
4676                 {
4677                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
4678                                               RTE_FLOW_ITEM_TYPE_END,
4679                         .spec = vlan_spec,
4680                         .last = NULL,
4681                         .mask = vlan_mask,
4682                 },
4683                 {
4684                         .type = RTE_FLOW_ITEM_TYPE_END,
4685                 },
4686         };
4687         uint16_t queue[priv->reta_idx_n];
4688         struct rte_flow_action_rss action_rss = {
4689                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
4690                 .level = 0,
4691                 .types = priv->rss_conf.rss_hf,
4692                 .key_len = priv->rss_conf.rss_key_len,
4693                 .queue_num = priv->reta_idx_n,
4694                 .key = priv->rss_conf.rss_key,
4695                 .queue = queue,
4696         };
4697         struct rte_flow_action actions[] = {
4698                 {
4699                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4700                         .conf = &action_rss,
4701                 },
4702                 {
4703                         .type = RTE_FLOW_ACTION_TYPE_END,
4704                 },
4705         };
4706         struct rte_flow *flow;
4707         struct rte_flow_error error;
4708         unsigned int i;
4709
4710         if (!priv->reta_idx_n || !priv->rxqs_n) {
4711                 return 0;
4712         }
4713         for (i = 0; i != priv->reta_idx_n; ++i)
4714                 queue[i] = (*priv->reta_idx)[i];
4715         flow = flow_list_create(dev, &priv->ctrl_flows,
4716                                 &attr, items, actions, false, &error);
4717         if (!flow)
4718                 return -rte_errno;
4719         return 0;
4720 }
4721
4722 /**
4723  * Enable a flow control configured from the control plane.
4724  *
4725  * @param dev
4726  *   Pointer to Ethernet device.
4727  * @param eth_spec
4728  *   An Ethernet flow spec to apply.
4729  * @param eth_mask
4730  *   An Ethernet flow mask to apply.
4731  *
4732  * @return
4733  *   0 on success, a negative errno value otherwise and rte_errno is set.
4734  */
4735 int
4736 mlx5_ctrl_flow(struct rte_eth_dev *dev,
4737                struct rte_flow_item_eth *eth_spec,
4738                struct rte_flow_item_eth *eth_mask)
4739 {
4740         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
4741 }
4742
4743 /**
4744  * Destroy a flow.
4745  *
4746  * @see rte_flow_destroy()
4747  * @see rte_flow_ops
4748  */
4749 int
4750 mlx5_flow_destroy(struct rte_eth_dev *dev,
4751                   struct rte_flow *flow,
4752                   struct rte_flow_error *error __rte_unused)
4753 {
4754         struct mlx5_priv *priv = dev->data->dev_private;
4755
4756         flow_list_destroy(dev, &priv->flows, flow);
4757         return 0;
4758 }
4759
4760 /**
4761  * Destroy all flows.
4762  *
4763  * @see rte_flow_flush()
4764  * @see rte_flow_ops
4765  */
4766 int
4767 mlx5_flow_flush(struct rte_eth_dev *dev,
4768                 struct rte_flow_error *error __rte_unused)
4769 {
4770         struct mlx5_priv *priv = dev->data->dev_private;
4771
4772         mlx5_flow_list_flush(dev, &priv->flows);
4773         return 0;
4774 }
4775
4776 /**
4777  * Isolated mode.
4778  *
4779  * @see rte_flow_isolate()
4780  * @see rte_flow_ops
4781  */
4782 int
4783 mlx5_flow_isolate(struct rte_eth_dev *dev,
4784                   int enable,
4785                   struct rte_flow_error *error)
4786 {
4787         struct mlx5_priv *priv = dev->data->dev_private;
4788
4789         if (dev->data->dev_started) {
4790                 rte_flow_error_set(error, EBUSY,
4791                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4792                                    NULL,
4793                                    "port must be stopped first");
4794                 return -rte_errno;
4795         }
4796         priv->isolated = !!enable;
4797         if (enable)
4798                 dev->dev_ops = &mlx5_dev_ops_isolate;
4799         else
4800                 dev->dev_ops = &mlx5_dev_ops;
4801         return 0;
4802 }
4803
4804 /**
4805  * Query a flow.
4806  *
4807  * @see rte_flow_query()
4808  * @see rte_flow_ops
4809  */
4810 static int
4811 flow_drv_query(struct rte_eth_dev *dev,
4812                struct rte_flow *flow,
4813                const struct rte_flow_action *actions,
4814                void *data,
4815                struct rte_flow_error *error)
4816 {
4817         const struct mlx5_flow_driver_ops *fops;
4818         enum mlx5_flow_drv_type ftype = flow->drv_type;
4819
4820         MLX5_ASSERT(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
4821         fops = flow_get_drv_ops(ftype);
4822
4823         return fops->query(dev, flow, actions, data, error);
4824 }
4825
4826 /**
4827  * Query a flow.
4828  *
4829  * @see rte_flow_query()
4830  * @see rte_flow_ops
4831  */
4832 int
4833 mlx5_flow_query(struct rte_eth_dev *dev,
4834                 struct rte_flow *flow,
4835                 const struct rte_flow_action *actions,
4836                 void *data,
4837                 struct rte_flow_error *error)
4838 {
4839         int ret;
4840
4841         ret = flow_drv_query(dev, flow, actions, data, error);
4842         if (ret < 0)
4843                 return ret;
4844         return 0;
4845 }
4846
4847 /**
4848  * Convert a flow director filter to a generic flow.
4849  *
4850  * @param dev
4851  *   Pointer to Ethernet device.
4852  * @param fdir_filter
4853  *   Flow director filter to add.
4854  * @param attributes
4855  *   Generic flow parameters structure.
4856  *
4857  * @return
4858  *   0 on success, a negative errno value otherwise and rte_errno is set.
4859  */
4860 static int
4861 flow_fdir_filter_convert(struct rte_eth_dev *dev,
4862                          const struct rte_eth_fdir_filter *fdir_filter,
4863                          struct mlx5_fdir *attributes)
4864 {
4865         struct mlx5_priv *priv = dev->data->dev_private;
4866         const struct rte_eth_fdir_input *input = &fdir_filter->input;
4867         const struct rte_eth_fdir_masks *mask =
4868                 &dev->data->dev_conf.fdir_conf.mask;
4869
4870         /* Validate queue number. */
4871         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
4872                 DRV_LOG(ERR, "port %u invalid queue number %d",
4873                         dev->data->port_id, fdir_filter->action.rx_queue);
4874                 rte_errno = EINVAL;
4875                 return -rte_errno;
4876         }
4877         attributes->attr.ingress = 1;
4878         attributes->items[0] = (struct rte_flow_item) {
4879                 .type = RTE_FLOW_ITEM_TYPE_ETH,
4880                 .spec = &attributes->l2,
4881                 .mask = &attributes->l2_mask,
4882         };
4883         switch (fdir_filter->action.behavior) {
4884         case RTE_ETH_FDIR_ACCEPT:
4885                 attributes->actions[0] = (struct rte_flow_action){
4886                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
4887                         .conf = &attributes->queue,
4888                 };
4889                 break;
4890         case RTE_ETH_FDIR_REJECT:
4891                 attributes->actions[0] = (struct rte_flow_action){
4892                         .type = RTE_FLOW_ACTION_TYPE_DROP,
4893                 };
4894                 break;
4895         default:
4896                 DRV_LOG(ERR, "port %u invalid behavior %d",
4897                         dev->data->port_id,
4898                         fdir_filter->action.behavior);
4899                 rte_errno = ENOTSUP;
4900                 return -rte_errno;
4901         }
4902         attributes->queue.index = fdir_filter->action.rx_queue;
4903         /* Handle L3. */
4904         switch (fdir_filter->input.flow_type) {
4905         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4906         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4907         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4908                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
4909                         .src_addr = input->flow.ip4_flow.src_ip,
4910                         .dst_addr = input->flow.ip4_flow.dst_ip,
4911                         .time_to_live = input->flow.ip4_flow.ttl,
4912                         .type_of_service = input->flow.ip4_flow.tos,
4913                 };
4914                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
4915                         .src_addr = mask->ipv4_mask.src_ip,
4916                         .dst_addr = mask->ipv4_mask.dst_ip,
4917                         .time_to_live = mask->ipv4_mask.ttl,
4918                         .type_of_service = mask->ipv4_mask.tos,
4919                         .next_proto_id = mask->ipv4_mask.proto,
4920                 };
4921                 attributes->items[1] = (struct rte_flow_item){
4922                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
4923                         .spec = &attributes->l3,
4924                         .mask = &attributes->l3_mask,
4925                 };
4926                 break;
4927         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4928         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4929         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4930                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
4931                         .hop_limits = input->flow.ipv6_flow.hop_limits,
4932                         .proto = input->flow.ipv6_flow.proto,
4933                 };
4934
4935                 memcpy(attributes->l3.ipv6.hdr.src_addr,
4936                        input->flow.ipv6_flow.src_ip,
4937                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4938                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
4939                        input->flow.ipv6_flow.dst_ip,
4940                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4941                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
4942                        mask->ipv6_mask.src_ip,
4943                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4944                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
4945                        mask->ipv6_mask.dst_ip,
4946                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4947                 attributes->items[1] = (struct rte_flow_item){
4948                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
4949                         .spec = &attributes->l3,
4950                         .mask = &attributes->l3_mask,
4951                 };
4952                 break;
4953         default:
4954                 DRV_LOG(ERR, "port %u invalid flow type%d",
4955                         dev->data->port_id, fdir_filter->input.flow_type);
4956                 rte_errno = ENOTSUP;
4957                 return -rte_errno;
4958         }
4959         /* Handle L4. */
4960         switch (fdir_filter->input.flow_type) {
4961         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4962                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4963                         .src_port = input->flow.udp4_flow.src_port,
4964                         .dst_port = input->flow.udp4_flow.dst_port,
4965                 };
4966                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4967                         .src_port = mask->src_port_mask,
4968                         .dst_port = mask->dst_port_mask,
4969                 };
4970                 attributes->items[2] = (struct rte_flow_item){
4971                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4972                         .spec = &attributes->l4,
4973                         .mask = &attributes->l4_mask,
4974                 };
4975                 break;
4976         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4977                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4978                         .src_port = input->flow.tcp4_flow.src_port,
4979                         .dst_port = input->flow.tcp4_flow.dst_port,
4980                 };
4981                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4982                         .src_port = mask->src_port_mask,
4983                         .dst_port = mask->dst_port_mask,
4984                 };
4985                 attributes->items[2] = (struct rte_flow_item){
4986                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4987                         .spec = &attributes->l4,
4988                         .mask = &attributes->l4_mask,
4989                 };
4990                 break;
4991         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4992                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4993                         .src_port = input->flow.udp6_flow.src_port,
4994                         .dst_port = input->flow.udp6_flow.dst_port,
4995                 };
4996                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4997                         .src_port = mask->src_port_mask,
4998                         .dst_port = mask->dst_port_mask,
4999                 };
5000                 attributes->items[2] = (struct rte_flow_item){
5001                         .type = RTE_FLOW_ITEM_TYPE_UDP,
5002                         .spec = &attributes->l4,
5003                         .mask = &attributes->l4_mask,
5004                 };
5005                 break;
5006         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
5007                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
5008                         .src_port = input->flow.tcp6_flow.src_port,
5009                         .dst_port = input->flow.tcp6_flow.dst_port,
5010                 };
5011                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
5012                         .src_port = mask->src_port_mask,
5013                         .dst_port = mask->dst_port_mask,
5014                 };
5015                 attributes->items[2] = (struct rte_flow_item){
5016                         .type = RTE_FLOW_ITEM_TYPE_TCP,
5017                         .spec = &attributes->l4,
5018                         .mask = &attributes->l4_mask,
5019                 };
5020                 break;
5021         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
5022         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
5023                 break;
5024         default:
5025                 DRV_LOG(ERR, "port %u invalid flow type%d",
5026                         dev->data->port_id, fdir_filter->input.flow_type);
5027                 rte_errno = ENOTSUP;
5028                 return -rte_errno;
5029         }
5030         return 0;
5031 }
5032
5033 #define FLOW_FDIR_CMP(f1, f2, fld) \
5034         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
5035
5036 /**
5037  * Compare two FDIR flows. If items and actions are identical, the two flows are
5038  * regarded as same.
5039  *
5040  * @param dev
5041  *   Pointer to Ethernet device.
5042  * @param f1
5043  *   FDIR flow to compare.
5044  * @param f2
5045  *   FDIR flow to compare.
5046  *
5047  * @return
5048  *   Zero on match, 1 otherwise.
5049  */
5050 static int
5051 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
5052 {
5053         if (FLOW_FDIR_CMP(f1, f2, attr) ||
5054             FLOW_FDIR_CMP(f1, f2, l2) ||
5055             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
5056             FLOW_FDIR_CMP(f1, f2, l3) ||
5057             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
5058             FLOW_FDIR_CMP(f1, f2, l4) ||
5059             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
5060             FLOW_FDIR_CMP(f1, f2, actions[0].type))
5061                 return 1;
5062         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
5063             FLOW_FDIR_CMP(f1, f2, queue))
5064                 return 1;
5065         return 0;
5066 }
5067
5068 /**
5069  * Search device flow list to find out a matched FDIR flow.
5070  *
5071  * @param dev
5072  *   Pointer to Ethernet device.
5073  * @param fdir_flow
5074  *   FDIR flow to lookup.
5075  *
5076  * @return
5077  *   Pointer of flow if found, NULL otherwise.
5078  */
5079 static struct rte_flow *
5080 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
5081 {
5082         struct mlx5_priv *priv = dev->data->dev_private;
5083         struct rte_flow *flow = NULL;
5084
5085         MLX5_ASSERT(fdir_flow);
5086         TAILQ_FOREACH(flow, &priv->flows, next) {
5087                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
5088                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
5089                                 dev->data->port_id, (void *)flow);
5090                         break;
5091                 }
5092         }
5093         return flow;
5094 }
5095
5096 /**
5097  * Add new flow director filter and store it in list.
5098  *
5099  * @param dev
5100  *   Pointer to Ethernet device.
5101  * @param fdir_filter
5102  *   Flow director filter to add.
5103  *
5104  * @return
5105  *   0 on success, a negative errno value otherwise and rte_errno is set.
5106  */
5107 static int
5108 flow_fdir_filter_add(struct rte_eth_dev *dev,
5109                      const struct rte_eth_fdir_filter *fdir_filter)
5110 {
5111         struct mlx5_priv *priv = dev->data->dev_private;
5112         struct mlx5_fdir *fdir_flow;
5113         struct rte_flow *flow;
5114         int ret;
5115
5116         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
5117         if (!fdir_flow) {
5118                 rte_errno = ENOMEM;
5119                 return -rte_errno;
5120         }
5121         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
5122         if (ret)
5123                 goto error;
5124         flow = flow_fdir_filter_lookup(dev, fdir_flow);
5125         if (flow) {
5126                 rte_errno = EEXIST;
5127                 goto error;
5128         }
5129         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
5130                                 fdir_flow->items, fdir_flow->actions, true,
5131                                 NULL);
5132         if (!flow)
5133                 goto error;
5134         MLX5_ASSERT(!flow->fdir);
5135         flow->fdir = fdir_flow;
5136         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
5137                 dev->data->port_id, (void *)flow);
5138         return 0;
5139 error:
5140         rte_free(fdir_flow);
5141         return -rte_errno;
5142 }
5143
5144 /**
5145  * Delete specific filter.
5146  *
5147  * @param dev
5148  *   Pointer to Ethernet device.
5149  * @param fdir_filter
5150  *   Filter to be deleted.
5151  *
5152  * @return
5153  *   0 on success, a negative errno value otherwise and rte_errno is set.
5154  */
5155 static int
5156 flow_fdir_filter_delete(struct rte_eth_dev *dev,
5157                         const struct rte_eth_fdir_filter *fdir_filter)
5158 {
5159         struct mlx5_priv *priv = dev->data->dev_private;
5160         struct rte_flow *flow;
5161         struct mlx5_fdir fdir_flow = {
5162                 .attr.group = 0,
5163         };
5164         int ret;
5165
5166         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
5167         if (ret)
5168                 return -rte_errno;
5169         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
5170         if (!flow) {
5171                 rte_errno = ENOENT;
5172                 return -rte_errno;
5173         }
5174         flow_list_destroy(dev, &priv->flows, flow);
5175         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
5176                 dev->data->port_id, (void *)flow);
5177         return 0;
5178 }
5179
5180 /**
5181  * Update queue for specific filter.
5182  *
5183  * @param dev
5184  *   Pointer to Ethernet device.
5185  * @param fdir_filter
5186  *   Filter to be updated.
5187  *
5188  * @return
5189  *   0 on success, a negative errno value otherwise and rte_errno is set.
5190  */
5191 static int
5192 flow_fdir_filter_update(struct rte_eth_dev *dev,
5193                         const struct rte_eth_fdir_filter *fdir_filter)
5194 {
5195         int ret;
5196
5197         ret = flow_fdir_filter_delete(dev, fdir_filter);
5198         if (ret)
5199                 return ret;
5200         return flow_fdir_filter_add(dev, fdir_filter);
5201 }
5202
5203 /**
5204  * Flush all filters.
5205  *
5206  * @param dev
5207  *   Pointer to Ethernet device.
5208  */
5209 static void
5210 flow_fdir_filter_flush(struct rte_eth_dev *dev)
5211 {
5212         struct mlx5_priv *priv = dev->data->dev_private;
5213
5214         mlx5_flow_list_flush(dev, &priv->flows);
5215 }
5216
5217 /**
5218  * Get flow director information.
5219  *
5220  * @param dev
5221  *   Pointer to Ethernet device.
5222  * @param[out] fdir_info
5223  *   Resulting flow director information.
5224  */
5225 static void
5226 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
5227 {
5228         struct rte_eth_fdir_masks *mask =
5229                 &dev->data->dev_conf.fdir_conf.mask;
5230
5231         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
5232         fdir_info->guarant_spc = 0;
5233         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
5234         fdir_info->max_flexpayload = 0;
5235         fdir_info->flow_types_mask[0] = 0;
5236         fdir_info->flex_payload_unit = 0;
5237         fdir_info->max_flex_payload_segment_num = 0;
5238         fdir_info->flex_payload_limit = 0;
5239         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
5240 }
5241
5242 /**
5243  * Deal with flow director operations.
5244  *
5245  * @param dev
5246  *   Pointer to Ethernet device.
5247  * @param filter_op
5248  *   Operation to perform.
5249  * @param arg
5250  *   Pointer to operation-specific structure.
5251  *
5252  * @return
5253  *   0 on success, a negative errno value otherwise and rte_errno is set.
5254  */
5255 static int
5256 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
5257                     void *arg)
5258 {
5259         enum rte_fdir_mode fdir_mode =
5260                 dev->data->dev_conf.fdir_conf.mode;
5261
5262         if (filter_op == RTE_ETH_FILTER_NOP)
5263                 return 0;
5264         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
5265             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
5266                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
5267                         dev->data->port_id, fdir_mode);
5268                 rte_errno = EINVAL;
5269                 return -rte_errno;
5270         }
5271         switch (filter_op) {
5272         case RTE_ETH_FILTER_ADD:
5273                 return flow_fdir_filter_add(dev, arg);
5274         case RTE_ETH_FILTER_UPDATE:
5275                 return flow_fdir_filter_update(dev, arg);
5276         case RTE_ETH_FILTER_DELETE:
5277                 return flow_fdir_filter_delete(dev, arg);
5278         case RTE_ETH_FILTER_FLUSH:
5279                 flow_fdir_filter_flush(dev);
5280                 break;
5281         case RTE_ETH_FILTER_INFO:
5282                 flow_fdir_info_get(dev, arg);
5283                 break;
5284         default:
5285                 DRV_LOG(DEBUG, "port %u unknown operation %u",
5286                         dev->data->port_id, filter_op);
5287                 rte_errno = EINVAL;
5288                 return -rte_errno;
5289         }
5290         return 0;
5291 }
5292
5293 /**
5294  * Manage filter operations.
5295  *
5296  * @param dev
5297  *   Pointer to Ethernet device structure.
5298  * @param filter_type
5299  *   Filter type.
5300  * @param filter_op
5301  *   Operation to perform.
5302  * @param arg
5303  *   Pointer to operation-specific structure.
5304  *
5305  * @return
5306  *   0 on success, a negative errno value otherwise and rte_errno is set.
5307  */
5308 int
5309 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
5310                      enum rte_filter_type filter_type,
5311                      enum rte_filter_op filter_op,
5312                      void *arg)
5313 {
5314         switch (filter_type) {
5315         case RTE_ETH_FILTER_GENERIC:
5316                 if (filter_op != RTE_ETH_FILTER_GET) {
5317                         rte_errno = EINVAL;
5318                         return -rte_errno;
5319                 }
5320                 *(const void **)arg = &mlx5_flow_ops;
5321                 return 0;
5322         case RTE_ETH_FILTER_FDIR:
5323                 return flow_fdir_ctrl_func(dev, filter_op, arg);
5324         default:
5325                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
5326                         dev->data->port_id, filter_type);
5327                 rte_errno = ENOTSUP;
5328                 return -rte_errno;
5329         }
5330         return 0;
5331 }
5332
5333 /**
5334  * Create the needed meter and suffix tables.
5335  *
5336  * @param[in] dev
5337  *   Pointer to Ethernet device.
5338  * @param[in] fm
5339  *   Pointer to the flow meter.
5340  *
5341  * @return
5342  *   Pointer to table set on success, NULL otherwise.
5343  */
5344 struct mlx5_meter_domains_infos *
5345 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
5346                           const struct mlx5_flow_meter *fm)
5347 {
5348         const struct mlx5_flow_driver_ops *fops;
5349
5350         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5351         return fops->create_mtr_tbls(dev, fm);
5352 }
5353
5354 /**
5355  * Destroy the meter table set.
5356  *
5357  * @param[in] dev
5358  *   Pointer to Ethernet device.
5359  * @param[in] tbl
5360  *   Pointer to the meter table set.
5361  *
5362  * @return
5363  *   0 on success.
5364  */
5365 int
5366 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
5367                            struct mlx5_meter_domains_infos *tbls)
5368 {
5369         const struct mlx5_flow_driver_ops *fops;
5370
5371         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5372         return fops->destroy_mtr_tbls(dev, tbls);
5373 }
5374
5375 /**
5376  * Create policer rules.
5377  *
5378  * @param[in] dev
5379  *   Pointer to Ethernet device.
5380  * @param[in] fm
5381  *   Pointer to flow meter structure.
5382  * @param[in] attr
5383  *   Pointer to flow attributes.
5384  *
5385  * @return
5386  *   0 on success, -1 otherwise.
5387  */
5388 int
5389 mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
5390                                struct mlx5_flow_meter *fm,
5391                                const struct rte_flow_attr *attr)
5392 {
5393         const struct mlx5_flow_driver_ops *fops;
5394
5395         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5396         return fops->create_policer_rules(dev, fm, attr);
5397 }
5398
5399 /**
5400  * Destroy policer rules.
5401  *
5402  * @param[in] fm
5403  *   Pointer to flow meter structure.
5404  * @param[in] attr
5405  *   Pointer to flow attributes.
5406  *
5407  * @return
5408  *   0 on success, -1 otherwise.
5409  */
5410 int
5411 mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
5412                                 struct mlx5_flow_meter *fm,
5413                                 const struct rte_flow_attr *attr)
5414 {
5415         const struct mlx5_flow_driver_ops *fops;
5416
5417         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5418         return fops->destroy_policer_rules(dev, fm, attr);
5419 }
5420
5421 /**
5422  * Allocate a counter.
5423  *
5424  * @param[in] dev
5425  *   Pointer to Ethernet device structure.
5426  *
5427  * @return
5428  *   Pointer to allocated counter  on success, NULL otherwise.
5429  */
5430 struct mlx5_flow_counter *
5431 mlx5_counter_alloc(struct rte_eth_dev *dev)
5432 {
5433         const struct mlx5_flow_driver_ops *fops;
5434         struct rte_flow_attr attr = { .transfer = 0 };
5435
5436         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5437                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5438                 return fops->counter_alloc(dev);
5439         }
5440         DRV_LOG(ERR,
5441                 "port %u counter allocate is not supported.",
5442                  dev->data->port_id);
5443         return NULL;
5444 }
5445
5446 /**
5447  * Free a counter.
5448  *
5449  * @param[in] dev
5450  *   Pointer to Ethernet device structure.
5451  * @param[in] cnt
5452  *   Pointer to counter to be free.
5453  */
5454 void
5455 mlx5_counter_free(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt)
5456 {
5457         const struct mlx5_flow_driver_ops *fops;
5458         struct rte_flow_attr attr = { .transfer = 0 };
5459
5460         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5461                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5462                 fops->counter_free(dev, cnt);
5463                 return;
5464         }
5465         DRV_LOG(ERR,
5466                 "port %u counter free is not supported.",
5467                  dev->data->port_id);
5468 }
5469
5470 /**
5471  * Query counter statistics.
5472  *
5473  * @param[in] dev
5474  *   Pointer to Ethernet device structure.
5475  * @param[in] cnt
5476  *   Pointer to counter to query.
5477  * @param[in] clear
5478  *   Set to clear counter statistics.
5479  * @param[out] pkts
5480  *   The counter hits packets number to save.
5481  * @param[out] bytes
5482  *   The counter hits bytes number to save.
5483  *
5484  * @return
5485  *   0 on success, a negative errno value otherwise.
5486  */
5487 int
5488 mlx5_counter_query(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt,
5489                    bool clear, uint64_t *pkts, uint64_t *bytes)
5490 {
5491         const struct mlx5_flow_driver_ops *fops;
5492         struct rte_flow_attr attr = { .transfer = 0 };
5493
5494         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5495                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5496                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
5497         }
5498         DRV_LOG(ERR,
5499                 "port %u counter query is not supported.",
5500                  dev->data->port_id);
5501         return -ENOTSUP;
5502 }
5503
5504 #define MLX5_POOL_QUERY_FREQ_US 1000000
5505
5506 /**
5507  * Set the periodic procedure for triggering asynchronous batch queries for all
5508  * the counter pools.
5509  *
5510  * @param[in] sh
5511  *   Pointer to mlx5_ibv_shared object.
5512  */
5513 void
5514 mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
5515 {
5516         struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
5517         uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
5518         uint32_t us;
5519
5520         cont = MLX5_CNT_CONTAINER(sh, 1, 0);
5521         pools_n += rte_atomic16_read(&cont->n_valid);
5522         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
5523         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
5524         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
5525                 sh->cmng.query_thread_on = 0;
5526                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
5527         } else {
5528                 sh->cmng.query_thread_on = 1;
5529         }
5530 }
5531
5532 /**
5533  * The periodic procedure for triggering asynchronous batch queries for all the
5534  * counter pools. This function is probably called by the host thread.
5535  *
5536  * @param[in] arg
5537  *   The parameter for the alarm process.
5538  */
5539 void
5540 mlx5_flow_query_alarm(void *arg)
5541 {
5542         struct mlx5_ibv_shared *sh = arg;
5543         struct mlx5_devx_obj *dcs;
5544         uint16_t offset;
5545         int ret;
5546         uint8_t batch = sh->cmng.batch;
5547         uint16_t pool_index = sh->cmng.pool_index;
5548         struct mlx5_pools_container *cont;
5549         struct mlx5_pools_container *mcont;
5550         struct mlx5_flow_counter_pool *pool;
5551
5552         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
5553                 goto set_alarm;
5554 next_container:
5555         cont = MLX5_CNT_CONTAINER(sh, batch, 1);
5556         mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
5557         /* Check if resize was done and need to flip a container. */
5558         if (cont != mcont) {
5559                 if (cont->pools) {
5560                         /* Clean the old container. */
5561                         rte_free(cont->pools);
5562                         memset(cont, 0, sizeof(*cont));
5563                 }
5564                 rte_cio_wmb();
5565                  /* Flip the host container. */
5566                 sh->cmng.mhi[batch] ^= (uint8_t)2;
5567                 cont = mcont;
5568         }
5569         if (!cont->pools) {
5570                 /* 2 empty containers case is unexpected. */
5571                 if (unlikely(batch != sh->cmng.batch))
5572                         goto set_alarm;
5573                 batch ^= 0x1;
5574                 pool_index = 0;
5575                 goto next_container;
5576         }
5577         pool = cont->pools[pool_index];
5578         if (pool->raw_hw)
5579                 /* There is a pool query in progress. */
5580                 goto set_alarm;
5581         pool->raw_hw =
5582                 LIST_FIRST(&sh->cmng.free_stat_raws);
5583         if (!pool->raw_hw)
5584                 /* No free counter statistics raw memory. */
5585                 goto set_alarm;
5586         dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
5587                                                               (&pool->a64_dcs);
5588         offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
5589         ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
5590                                                offset, NULL, NULL,
5591                                                pool->raw_hw->mem_mng->dm->id,
5592                                                (void *)(uintptr_t)
5593                                                (pool->raw_hw->data + offset),
5594                                                sh->devx_comp,
5595                                                (uint64_t)(uintptr_t)pool);
5596         if (ret) {
5597                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
5598                         " %d", pool->min_dcs->id);
5599                 pool->raw_hw = NULL;
5600                 goto set_alarm;
5601         }
5602         pool->raw_hw->min_dcs_id = dcs->id;
5603         LIST_REMOVE(pool->raw_hw, next);
5604         sh->cmng.pending_queries++;
5605         pool_index++;
5606         if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
5607                 batch ^= 0x1;
5608                 pool_index = 0;
5609         }
5610 set_alarm:
5611         sh->cmng.batch = batch;
5612         sh->cmng.pool_index = pool_index;
5613         mlx5_set_query_alarm(sh);
5614 }
5615
5616 /**
5617  * Handler for the HW respond about ready values from an asynchronous batch
5618  * query. This function is probably called by the host thread.
5619  *
5620  * @param[in] sh
5621  *   The pointer to the shared IB device context.
5622  * @param[in] async_id
5623  *   The Devx async ID.
5624  * @param[in] status
5625  *   The status of the completion.
5626  */
5627 void
5628 mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
5629                                   uint64_t async_id, int status)
5630 {
5631         struct mlx5_flow_counter_pool *pool =
5632                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
5633         struct mlx5_counter_stats_raw *raw_to_free;
5634
5635         if (unlikely(status)) {
5636                 raw_to_free = pool->raw_hw;
5637         } else {
5638                 raw_to_free = pool->raw;
5639                 rte_spinlock_lock(&pool->sl);
5640                 pool->raw = pool->raw_hw;
5641                 rte_spinlock_unlock(&pool->sl);
5642                 rte_atomic64_add(&pool->query_gen, 1);
5643                 /* Be sure the new raw counters data is updated in memory. */
5644                 rte_cio_wmb();
5645         }
5646         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
5647         pool->raw_hw = NULL;
5648         sh->cmng.pending_queries--;
5649 }
5650
5651 /**
5652  * Translate the rte_flow group index to HW table value.
5653  *
5654  * @param[in] attributes
5655  *   Pointer to flow attributes
5656  * @param[in] external
5657  *   Value is part of flow rule created by request external to PMD.
5658  * @param[in] group
5659  *   rte_flow group index value.
5660  * @param[out] fdb_def_rule
5661  *   Whether fdb jump to table 1 is configured.
5662  * @param[out] table
5663  *   HW table value.
5664  * @param[out] error
5665  *   Pointer to error structure.
5666  *
5667  * @return
5668  *   0 on success, a negative errno value otherwise and rte_errno is set.
5669  */
5670 int
5671 mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
5672                          uint32_t group, bool fdb_def_rule, uint32_t *table,
5673                          struct rte_flow_error *error)
5674 {
5675         if (attributes->transfer && external && fdb_def_rule) {
5676                 if (group == UINT32_MAX)
5677                         return rte_flow_error_set
5678                                                 (error, EINVAL,
5679                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
5680                                                  NULL,
5681                                                  "group index not supported");
5682                 *table = group + 1;
5683         } else {
5684                 *table = group;
5685         }
5686         return 0;
5687 }
5688
5689 /**
5690  * Discover availability of metadata reg_c's.
5691  *
5692  * Iteratively use test flows to check availability.
5693  *
5694  * @param[in] dev
5695  *   Pointer to the Ethernet device structure.
5696  *
5697  * @return
5698  *   0 on success, a negative errno value otherwise and rte_errno is set.
5699  */
5700 int
5701 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
5702 {
5703         struct mlx5_priv *priv = dev->data->dev_private;
5704         struct mlx5_dev_config *config = &priv->config;
5705         enum modify_reg idx;
5706         int n = 0;
5707
5708         /* reg_c[0] and reg_c[1] are reserved. */
5709         config->flow_mreg_c[n++] = REG_C_0;
5710         config->flow_mreg_c[n++] = REG_C_1;
5711         /* Discover availability of other reg_c's. */
5712         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
5713                 struct rte_flow_attr attr = {
5714                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5715                         .priority = MLX5_FLOW_PRIO_RSVD,
5716                         .ingress = 1,
5717                 };
5718                 struct rte_flow_item items[] = {
5719                         [0] = {
5720                                 .type = RTE_FLOW_ITEM_TYPE_END,
5721                         },
5722                 };
5723                 struct rte_flow_action actions[] = {
5724                         [0] = {
5725                                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5726                                 .conf = &(struct mlx5_flow_action_copy_mreg){
5727                                         .src = REG_C_1,
5728                                         .dst = idx,
5729                                 },
5730                         },
5731                         [1] = {
5732                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5733                                 .conf = &(struct rte_flow_action_jump){
5734                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5735                                 },
5736                         },
5737                         [2] = {
5738                                 .type = RTE_FLOW_ACTION_TYPE_END,
5739                         },
5740                 };
5741                 struct rte_flow *flow;
5742                 struct rte_flow_error error;
5743
5744                 if (!config->dv_flow_en)
5745                         break;
5746                 /* Create internal flow, validation skips copy action. */
5747                 flow = flow_list_create(dev, NULL, &attr, items,
5748                                         actions, false, &error);
5749                 if (!flow)
5750                         continue;
5751                 if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
5752                         config->flow_mreg_c[n++] = idx;
5753                 flow_list_destroy(dev, NULL, flow);
5754         }
5755         for (; n < MLX5_MREG_C_NUM; ++n)
5756                 config->flow_mreg_c[n] = REG_NONE;
5757         return 0;
5758 }
5759
5760 /**
5761  * Dump flow raw hw data to file
5762  *
5763  * @param[in] dev
5764  *    The pointer to Ethernet device.
5765  * @param[in] file
5766  *   A pointer to a file for output.
5767  * @param[out] error
5768  *   Perform verbose error reporting if not NULL. PMDs initialize this
5769  *   structure in case of error only.
5770  * @return
5771  *   0 on success, a nagative value otherwise.
5772  */
5773 int
5774 mlx5_flow_dev_dump(struct rte_eth_dev *dev,
5775                    FILE *file,
5776                    struct rte_flow_error *error __rte_unused)
5777 {
5778         struct mlx5_priv *priv = dev->data->dev_private;
5779         struct mlx5_ibv_shared *sh = priv->sh;
5780
5781         return mlx5_devx_cmd_flow_dump(sh->fdb_domain, sh->rx_domain,
5782                                        sh->tx_domain, file);
5783 }