drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_ethdev_driver.h>
  25 #include <rte_flow.h>
  26 #include <rte_flow_driver.h>
  27 #include <rte_malloc.h>
  28 #include <rte_ip.h>
  29
  30 #include "mlx5.h"
  31 #include "mlx5_defs.h"
  32 #include "mlx5_flow.h"
  33 #include "mlx5_glue.h"
  34 #include "mlx5_devx_cmds.h"
  35 #include "mlx5_prm.h"
  36 #include "mlx5_rxtx.h"
  37
  38 /* Dev ops structure defined in mlx5.c */
  39 extern const struct eth_dev_ops mlx5_dev_ops;
  40 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  41
  42 /** Device flow drivers. */
  43 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  44 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  45 #endif
  46 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  47
  48 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  49
  50 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  51         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  52 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  53         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  54 #endif
  55         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  56         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  57 };
  58
  59 enum mlx5_expansion {
  60         MLX5_EXPANSION_ROOT,
  61         MLX5_EXPANSION_ROOT_OUTER,
  62         MLX5_EXPANSION_ROOT_ETH_VLAN,
  63         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  64         MLX5_EXPANSION_OUTER_ETH,
  65         MLX5_EXPANSION_OUTER_ETH_VLAN,
  66         MLX5_EXPANSION_OUTER_VLAN,
  67         MLX5_EXPANSION_OUTER_IPV4,
  68         MLX5_EXPANSION_OUTER_IPV4_UDP,
  69         MLX5_EXPANSION_OUTER_IPV4_TCP,
  70         MLX5_EXPANSION_OUTER_IPV6,
  71         MLX5_EXPANSION_OUTER_IPV6_UDP,
  72         MLX5_EXPANSION_OUTER_IPV6_TCP,
  73         MLX5_EXPANSION_VXLAN,
  74         MLX5_EXPANSION_VXLAN_GPE,
  75         MLX5_EXPANSION_GRE,
  76         MLX5_EXPANSION_MPLS,
  77         MLX5_EXPANSION_ETH,
  78         MLX5_EXPANSION_ETH_VLAN,
  79         MLX5_EXPANSION_VLAN,
  80         MLX5_EXPANSION_IPV4,
  81         MLX5_EXPANSION_IPV4_UDP,
  82         MLX5_EXPANSION_IPV4_TCP,
  83         MLX5_EXPANSION_IPV6,
  84         MLX5_EXPANSION_IPV6_UDP,
  85         MLX5_EXPANSION_IPV6_TCP,
  86 };
  87
  88 /** Supported expansion of items. */
  89 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  90         [MLX5_EXPANSION_ROOT] = {
  91                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  92                                                  MLX5_EXPANSION_IPV4,
  93                                                  MLX5_EXPANSION_IPV6),
  94                 .type = RTE_FLOW_ITEM_TYPE_END,
  95         },
  96         [MLX5_EXPANSION_ROOT_OUTER] = {
  97                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  98                                                  MLX5_EXPANSION_OUTER_IPV4,
  99                                                  MLX5_EXPANSION_OUTER_IPV6),
 100                 .type = RTE_FLOW_ITEM_TYPE_END,
 101         },
 102         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 103                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 104                 .type = RTE_FLOW_ITEM_TYPE_END,
 105         },
 106         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 107                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 108                 .type = RTE_FLOW_ITEM_TYPE_END,
 109         },
 110         [MLX5_EXPANSION_OUTER_ETH] = {
 111                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 112                                                  MLX5_EXPANSION_OUTER_IPV6,
 113                                                  MLX5_EXPANSION_MPLS),
 114                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 115                 .rss_types = 0,
 116         },
 117         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 118                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 119                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 120                 .rss_types = 0,
 121         },
 122         [MLX5_EXPANSION_OUTER_VLAN] = {
 123                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 124                                                  MLX5_EXPANSION_OUTER_IPV6),
 125                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 126         },
 127         [MLX5_EXPANSION_OUTER_IPV4] = {
 128                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 129                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 130                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 131                          MLX5_EXPANSION_GRE,
 132                          MLX5_EXPANSION_IPV4,
 133                          MLX5_EXPANSION_IPV6),
 134                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 135                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 136                         ETH_RSS_NONFRAG_IPV4_OTHER,
 137         },
 138         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 139                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 140                                                  MLX5_EXPANSION_VXLAN_GPE),
 141                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 142                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 143         },
 144         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 145                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 146                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 147         },
 148         [MLX5_EXPANSION_OUTER_IPV6] = {
 149                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 150                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 151                          MLX5_EXPANSION_OUTER_IPV6_TCP,
 152                          MLX5_EXPANSION_IPV4,
 153                          MLX5_EXPANSION_IPV6),
 154                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 155                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 156                         ETH_RSS_NONFRAG_IPV6_OTHER,
 157         },
 158         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 159                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 160                                                  MLX5_EXPANSION_VXLAN_GPE),
 161                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 162                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 163         },
 164         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 165                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 166                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 167         },
 168         [MLX5_EXPANSION_VXLAN] = {
 169                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 170                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 171         },
 172         [MLX5_EXPANSION_VXLAN_GPE] = {
 173                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 174                                                  MLX5_EXPANSION_IPV4,
 175                                                  MLX5_EXPANSION_IPV6),
 176                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 177         },
 178         [MLX5_EXPANSION_GRE] = {
 179                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 180                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 181         },
 182         [MLX5_EXPANSION_MPLS] = {
 183                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 184                                                  MLX5_EXPANSION_IPV6),
 185                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 186         },
 187         [MLX5_EXPANSION_ETH] = {
 188                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 189                                                  MLX5_EXPANSION_IPV6),
 190                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 191         },
 192         [MLX5_EXPANSION_ETH_VLAN] = {
 193                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 194                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 195         },
 196         [MLX5_EXPANSION_VLAN] = {
 197                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 198                                                  MLX5_EXPANSION_IPV6),
 199                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 200         },
 201         [MLX5_EXPANSION_IPV4] = {
 202                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 203                                                  MLX5_EXPANSION_IPV4_TCP),
 204                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 205                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 206                         ETH_RSS_NONFRAG_IPV4_OTHER,
 207         },
 208         [MLX5_EXPANSION_IPV4_UDP] = {
 209                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 210                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 211         },
 212         [MLX5_EXPANSION_IPV4_TCP] = {
 213                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 214                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 215         },
 216         [MLX5_EXPANSION_IPV6] = {
 217                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 218                                                  MLX5_EXPANSION_IPV6_TCP),
 219                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 220                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 221                         ETH_RSS_NONFRAG_IPV6_OTHER,
 222         },
 223         [MLX5_EXPANSION_IPV6_UDP] = {
 224                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 225                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 226         },
 227         [MLX5_EXPANSION_IPV6_TCP] = {
 228                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 229                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 230         },
 231 };
 232
 233 static const struct rte_flow_ops mlx5_flow_ops = {
 234         .validate = mlx5_flow_validate,
 235         .create = mlx5_flow_create,
 236         .destroy = mlx5_flow_destroy,
 237         .flush = mlx5_flow_flush,
 238         .isolate = mlx5_flow_isolate,
 239         .query = mlx5_flow_query,
 240         .dev_dump = mlx5_flow_dev_dump,
 241 };
 242
 243 /* Convert FDIR request to Generic flow. */
 244 struct mlx5_fdir {
 245         struct rte_flow_attr attr;
 246         struct rte_flow_item items[4];
 247         struct rte_flow_item_eth l2;
 248         struct rte_flow_item_eth l2_mask;
 249         union {
 250                 struct rte_flow_item_ipv4 ipv4;
 251                 struct rte_flow_item_ipv6 ipv6;
 252         } l3;
 253         union {
 254                 struct rte_flow_item_ipv4 ipv4;
 255                 struct rte_flow_item_ipv6 ipv6;
 256         } l3_mask;
 257         union {
 258                 struct rte_flow_item_udp udp;
 259                 struct rte_flow_item_tcp tcp;
 260         } l4;
 261         union {
 262                 struct rte_flow_item_udp udp;
 263                 struct rte_flow_item_tcp tcp;
 264         } l4_mask;
 265         struct rte_flow_action actions[2];
 266         struct rte_flow_action_queue queue;
 267 };
 268
 269 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 270 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 271         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 272 };
 273
 274 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 275 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 276         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 277         { 9, 10, 11 }, { 12, 13, 14 },
 278 };
 279
 280 /* Tunnel information. */
 281 struct mlx5_flow_tunnel_info {
 282         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 283         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 284 };
 285
 286 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 287         {
 288                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 289                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 290         },
 291         {
 292                 .tunnel = MLX5_FLOW_LAYER_GENEVE,
 293                 .ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
 294         },
 295         {
 296                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 297                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 298         },
 299         {
 300                 .tunnel = MLX5_FLOW_LAYER_GRE,
 301                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 302         },
 303         {
 304                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 305                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 306         },
 307         {
 308                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 309                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 310         },
 311         {
 312                 .tunnel = MLX5_FLOW_LAYER_NVGRE,
 313                 .ptype = RTE_PTYPE_TUNNEL_NVGRE,
 314         },
 315         {
 316                 .tunnel = MLX5_FLOW_LAYER_IPIP,
 317                 .ptype = RTE_PTYPE_TUNNEL_IP,
 318         },
 319         {
 320                 .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
 321                 .ptype = RTE_PTYPE_TUNNEL_IP,
 322         },
 323         {
 324                 .tunnel = MLX5_FLOW_LAYER_GTP,
 325                 .ptype = RTE_PTYPE_TUNNEL_GTPU,
 326         },
 327 };
 328
 329 /**
 330  * Translate tag ID to register.
 331  *
 332  * @param[in] dev
 333  *   Pointer to the Ethernet device structure.
 334  * @param[in] feature
 335  *   The feature that request the register.
 336  * @param[in] id
 337  *   The request register ID.
 338  * @param[out] error
 339  *   Error description in case of any.
 340  *
 341  * @return
 342  *   The request register on success, a negative errno
 343  *   value otherwise and rte_errno is set.
 344  */
 345 int
 346 mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 347                      enum mlx5_feature_name feature,
 348                      uint32_t id,
 349                      struct rte_flow_error *error)
 350 {
 351         struct mlx5_priv *priv = dev->data->dev_private;
 352         struct mlx5_dev_config *config = &priv->config;
 353         enum modify_reg start_reg;
 354         bool skip_mtr_reg = false;
 355
 356         switch (feature) {
 357         case MLX5_HAIRPIN_RX:
 358                 return REG_B;
 359         case MLX5_HAIRPIN_TX:
 360                 return REG_A;
 361         case MLX5_METADATA_RX:
 362                 switch (config->dv_xmeta_en) {
 363                 case MLX5_XMETA_MODE_LEGACY:
 364                         return REG_B;
 365                 case MLX5_XMETA_MODE_META16:
 366                         return REG_C_0;
 367                 case MLX5_XMETA_MODE_META32:
 368                         return REG_C_1;
 369                 }
 370                 break;
 371         case MLX5_METADATA_TX:
 372                 return REG_A;
 373         case MLX5_METADATA_FDB:
 374                 switch (config->dv_xmeta_en) {
 375                 case MLX5_XMETA_MODE_LEGACY:
 376                         return REG_NONE;
 377                 case MLX5_XMETA_MODE_META16:
 378                         return REG_C_0;
 379                 case MLX5_XMETA_MODE_META32:
 380                         return REG_C_1;
 381                 }
 382                 break;
 383         case MLX5_FLOW_MARK:
 384                 switch (config->dv_xmeta_en) {
 385                 case MLX5_XMETA_MODE_LEGACY:
 386                         return REG_NONE;
 387                 case MLX5_XMETA_MODE_META16:
 388                         return REG_C_1;
 389                 case MLX5_XMETA_MODE_META32:
 390                         return REG_C_0;
 391                 }
 392                 break;
 393         case MLX5_MTR_SFX:
 394                 /*
 395                  * If meter color and flow match share one register, flow match
 396                  * should use the meter color register for match.
 397                  */
 398                 if (priv->mtr_reg_share)
 399                         return priv->mtr_color_reg;
 400                 else
 401                         return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 402                                REG_C_3;
 403         case MLX5_MTR_COLOR:
 404                 RTE_ASSERT(priv->mtr_color_reg != REG_NONE);
 405                 return priv->mtr_color_reg;
 406         case MLX5_COPY_MARK:
 407                 /*
 408                  * Metadata COPY_MARK register using is in meter suffix sub
 409                  * flow while with meter. It's safe to share the same register.
 410                  */
 411                 return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 412         case MLX5_APP_TAG:
 413                 /*
 414                  * If meter is enable, it will engage the register for color
 415                  * match and flow match. If meter color match is not using the
 416                  * REG_C_2, need to skip the REG_C_x be used by meter color
 417                  * match.
 418                  * If meter is disable, free to use all available registers.
 419                  */
 420                 start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 421                             (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 422                 skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 423                 if (id > (REG_C_7 - start_reg))
 424                         return rte_flow_error_set(error, EINVAL,
 425                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 426                                                   NULL, "invalid tag id");
 427                 if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
 428                         return rte_flow_error_set(error, ENOTSUP,
 429                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 430                                                   NULL, "unsupported tag id");
 431                 /*
 432                  * This case means meter is using the REG_C_x great than 2.
 433                  * Take care not to conflict with meter color REG_C_x.
 434                  * If the available index REG_C_y >= REG_C_x, skip the
 435                  * color register.
 436                  */
 437                 if (skip_mtr_reg && config->flow_mreg_c
 438                     [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
 439                         if (config->flow_mreg_c
 440                             [id + 1 + start_reg - REG_C_0] != REG_NONE)
 441                                 return config->flow_mreg_c
 442                                                [id + 1 + start_reg - REG_C_0];
 443                         return rte_flow_error_set(error, ENOTSUP,
 444                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 445                                                   NULL, "unsupported tag id");
 446                 }
 447                 return config->flow_mreg_c[id + start_reg - REG_C_0];
 448         }
 449         assert(false);
 450         return rte_flow_error_set(error, EINVAL,
 451                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 452                                   NULL, "invalid feature name");
 453 }
 454
 455 /**
 456  * Check extensive flow metadata register support.
 457  *
 458  * @param dev
 459  *   Pointer to rte_eth_dev structure.
 460  *
 461  * @return
 462  *   True if device supports extensive flow metadata register, otherwise false.
 463  */
 464 bool
 465 mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
 466 {
 467         struct mlx5_priv *priv = dev->data->dev_private;
 468         struct mlx5_dev_config *config = &priv->config;
 469
 470         /*
 471          * Having available reg_c can be regarded inclusively as supporting
 472          * extensive flow metadata register, which could mean,
 473          * - metadata register copy action by modify header.
 474          * - 16 modify header actions is supported.
 475          * - reg_c's are preserved across different domain (FDB and NIC) on
 476          *   packet loopback by flow lookup miss.
 477          */
 478         return config->flow_mreg_c[2] != REG_NONE;
 479 }
 480
 481 /**
 482  * Discover the maximum number of priority available.
 483  *
 484  * @param[in] dev
 485  *   Pointer to the Ethernet device structure.
 486  *
 487  * @return
 488  *   number of supported flow priority on success, a negative errno
 489  *   value otherwise and rte_errno is set.
 490  */
 491 int
 492 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 493 {
 494         struct mlx5_priv *priv = dev->data->dev_private;
 495         struct {
 496                 struct ibv_flow_attr attr;
 497                 struct ibv_flow_spec_eth eth;
 498                 struct ibv_flow_spec_action_drop drop;
 499         } flow_attr = {
 500                 .attr = {
 501                         .num_of_specs = 2,
 502                         .port = (uint8_t)priv->ibv_port,
 503                 },
 504                 .eth = {
 505                         .type = IBV_FLOW_SPEC_ETH,
 506                         .size = sizeof(struct ibv_flow_spec_eth),
 507                 },
 508                 .drop = {
 509                         .size = sizeof(struct ibv_flow_spec_action_drop),
 510                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 511                 },
 512         };
 513         struct ibv_flow *flow;
 514         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 515         uint16_t vprio[] = { 8, 16 };
 516         int i;
 517         int priority = 0;
 518
 519         if (!drop) {
 520                 rte_errno = ENOTSUP;
 521                 return -rte_errno;
 522         }
 523         for (i = 0; i != RTE_DIM(vprio); i++) {
 524                 flow_attr.attr.priority = vprio[i] - 1;
 525                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 526                 if (!flow)
 527                         break;
 528                 claim_zero(mlx5_glue->destroy_flow(flow));
 529                 priority = vprio[i];
 530         }
 531         mlx5_hrxq_drop_release(dev);
 532         switch (priority) {
 533         case 8:
 534                 priority = RTE_DIM(priority_map_3);
 535                 break;
 536         case 16:
 537                 priority = RTE_DIM(priority_map_5);
 538                 break;
 539         default:
 540                 rte_errno = ENOTSUP;
 541                 DRV_LOG(ERR,
 542                         "port %u verbs maximum priority: %d expected 8/16",
 543                         dev->data->port_id, priority);
 544                 return -rte_errno;
 545         }
 546         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 547                 dev->data->port_id, priority);
 548         return priority;
 549 }
 550
 551 /**
 552  * Adjust flow priority based on the highest layer and the request priority.
 553  *
 554  * @param[in] dev
 555  *   Pointer to the Ethernet device structure.
 556  * @param[in] priority
 557  *   The rule base priority.
 558  * @param[in] subpriority
 559  *   The priority based on the items.
 560  *
 561  * @return
 562  *   The new priority.
 563  */
 564 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 565                                    uint32_t subpriority)
 566 {
 567         uint32_t res = 0;
 568         struct mlx5_priv *priv = dev->data->dev_private;
 569
 570         switch (priv->config.flow_prio) {
 571         case RTE_DIM(priority_map_3):
 572                 res = priority_map_3[priority][subpriority];
 573                 break;
 574         case RTE_DIM(priority_map_5):
 575                 res = priority_map_5[priority][subpriority];
 576                 break;
 577         }
 578         return  res;
 579 }
 580
 581 /**
 582  * Verify the @p item specifications (spec, last, mask) are compatible with the
 583  * NIC capabilities.
 584  *
 585  * @param[in] item
 586  *   Item specification.
 587  * @param[in] mask
 588  *   @p item->mask or flow default bit-masks.
 589  * @param[in] nic_mask
 590  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 591  * @param[in] size
 592  *   Bit-masks size in bytes.
 593  * @param[out] error
 594  *   Pointer to error structure.
 595  *
 596  * @return
 597  *   0 on success, a negative errno value otherwise and rte_errno is set.
 598  */
 599 int
 600 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 601                           const uint8_t *mask,
 602                           const uint8_t *nic_mask,
 603                           unsigned int size,
 604                           struct rte_flow_error *error)
 605 {
 606         unsigned int i;
 607
 608         assert(nic_mask);
 609         for (i = 0; i < size; ++i)
 610                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 611                         return rte_flow_error_set(error, ENOTSUP,
 612                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 613                                                   item,
 614                                                   "mask enables non supported"
 615                                                   " bits");
 616         if (!item->spec && (item->mask || item->last))
 617                 return rte_flow_error_set(error, EINVAL,
 618                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 619                                           "mask/last without a spec is not"
 620                                           " supported");
 621         if (item->spec && item->last) {
 622                 uint8_t spec[size];
 623                 uint8_t last[size];
 624                 unsigned int i;
 625                 int ret;
 626
 627                 for (i = 0; i < size; ++i) {
 628                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 629                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 630                 }
 631                 ret = memcmp(spec, last, size);
 632                 if (ret != 0)
 633                         return rte_flow_error_set(error, EINVAL,
 634                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 635                                                   item,
 636                                                   "range is not valid");
 637         }
 638         return 0;
 639 }
 640
 641 /**
 642  * Adjust the hash fields according to the @p flow information.
 643  *
 644  * @param[in] dev_flow.
 645  *   Pointer to the mlx5_flow.
 646  * @param[in] tunnel
 647  *   1 when the hash field is for a tunnel item.
 648  * @param[in] layer_types
 649  *   ETH_RSS_* types.
 650  * @param[in] hash_fields
 651  *   Item hash fields.
 652  *
 653  * @return
 654  *   The hash fields that should be used.
 655  */
 656 uint64_t
 657 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 658                             int tunnel __rte_unused, uint64_t layer_types,
 659                             uint64_t hash_fields)
 660 {
 661         struct rte_flow *flow = dev_flow->flow;
 662 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 663         int rss_request_inner = flow->rss.level >= 2;
 664
 665         /* Check RSS hash level for tunnel. */
 666         if (tunnel && rss_request_inner)
 667                 hash_fields |= IBV_RX_HASH_INNER;
 668         else if (tunnel || rss_request_inner)
 669                 return 0;
 670 #endif
 671         /* Check if requested layer matches RSS hash fields. */
 672         if (!(flow->rss.types & layer_types))
 673                 return 0;
 674         return hash_fields;
 675 }
 676
 677 /**
 678  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 679  * if several tunnel rules are used on this queue, the tunnel ptype will be
 680  * cleared.
 681  *
 682  * @param rxq_ctrl
 683  *   Rx queue to update.
 684  */
 685 static void
 686 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 687 {
 688         unsigned int i;
 689         uint32_t tunnel_ptype = 0;
 690
 691         /* Look up for the ptype to use. */
 692         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 693                 if (!rxq_ctrl->flow_tunnels_n[i])
 694                         continue;
 695                 if (!tunnel_ptype) {
 696                         tunnel_ptype = tunnels_info[i].ptype;
 697                 } else {
 698                         tunnel_ptype = 0;
 699                         break;
 700                 }
 701         }
 702         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 703 }
 704
 705 /**
 706  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 707  * flow.
 708  *
 709  * @param[in] dev
 710  *   Pointer to the Ethernet device structure.
 711  * @param[in] dev_flow
 712  *   Pointer to device flow structure.
 713  */
 714 static void
 715 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 716 {
 717         struct mlx5_priv *priv = dev->data->dev_private;
 718         struct rte_flow *flow = dev_flow->flow;
 719         const int mark = !!(dev_flow->actions &
 720                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 721         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 722         unsigned int i;
 723
 724         for (i = 0; i != flow->rss.queue_num; ++i) {
 725                 int idx = (*flow->rss.queue)[i];
 726                 struct mlx5_rxq_ctrl *rxq_ctrl =
 727                         container_of((*priv->rxqs)[idx],
 728                                      struct mlx5_rxq_ctrl, rxq);
 729
 730                 /*
 731                  * To support metadata register copy on Tx loopback,
 732                  * this must be always enabled (metadata may arive
 733                  * from other port - not from local flows only.
 734                  */
 735                 if (priv->config.dv_flow_en &&
 736                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 737                     mlx5_flow_ext_mreg_supported(dev)) {
 738                         rxq_ctrl->rxq.mark = 1;
 739                         rxq_ctrl->flow_mark_n = 1;
 740                 } else if (mark) {
 741                         rxq_ctrl->rxq.mark = 1;
 742                         rxq_ctrl->flow_mark_n++;
 743                 }
 744                 if (tunnel) {
 745                         unsigned int j;
 746
 747                         /* Increase the counter matching the flow. */
 748                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 749                                 if ((tunnels_info[j].tunnel &
 750                                      dev_flow->layers) ==
 751                                     tunnels_info[j].tunnel) {
 752                                         rxq_ctrl->flow_tunnels_n[j]++;
 753                                         break;
 754                                 }
 755                         }
 756                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 757                 }
 758         }
 759 }
 760
 761 /**
 762  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 763  *
 764  * @param[in] dev
 765  *   Pointer to the Ethernet device structure.
 766  * @param[in] flow
 767  *   Pointer to flow structure.
 768  */
 769 static void
 770 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 771 {
 772         struct mlx5_flow *dev_flow;
 773
 774         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 775                 flow_drv_rxq_flags_set(dev, dev_flow);
 776 }
 777
 778 /**
 779  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 780  * device flow if no other flow uses it with the same kind of request.
 781  *
 782  * @param dev
 783  *   Pointer to Ethernet device.
 784  * @param[in] dev_flow
 785  *   Pointer to the device flow.
 786  */
 787 static void
 788 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 789 {
 790         struct mlx5_priv *priv = dev->data->dev_private;
 791         struct rte_flow *flow = dev_flow->flow;
 792         const int mark = !!(dev_flow->actions &
 793                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 794         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 795         unsigned int i;
 796
 797         assert(dev->data->dev_started);
 798         for (i = 0; i != flow->rss.queue_num; ++i) {
 799                 int idx = (*flow->rss.queue)[i];
 800                 struct mlx5_rxq_ctrl *rxq_ctrl =
 801                         container_of((*priv->rxqs)[idx],
 802                                      struct mlx5_rxq_ctrl, rxq);
 803
 804                 if (priv->config.dv_flow_en &&
 805                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 806                     mlx5_flow_ext_mreg_supported(dev)) {
 807                         rxq_ctrl->rxq.mark = 1;
 808                         rxq_ctrl->flow_mark_n = 1;
 809                 } else if (mark) {
 810                         rxq_ctrl->flow_mark_n--;
 811                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 812                 }
 813                 if (tunnel) {
 814                         unsigned int j;
 815
 816                         /* Decrease the counter matching the flow. */
 817                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 818                                 if ((tunnels_info[j].tunnel &
 819                                      dev_flow->layers) ==
 820                                     tunnels_info[j].tunnel) {
 821                                         rxq_ctrl->flow_tunnels_n[j]--;
 822                                         break;
 823                                 }
 824                         }
 825                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 826                 }
 827         }
 828 }
 829
 830 /**
 831  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 832  * @p flow if no other flow uses it with the same kind of request.
 833  *
 834  * @param dev
 835  *   Pointer to Ethernet device.
 836  * @param[in] flow
 837  *   Pointer to the flow.
 838  */
 839 static void
 840 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 841 {
 842         struct mlx5_flow *dev_flow;
 843
 844         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 845                 flow_drv_rxq_flags_trim(dev, dev_flow);
 846 }
 847
 848 /**
 849  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 850  *
 851  * @param dev
 852  *   Pointer to Ethernet device.
 853  */
 854 static void
 855 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 856 {
 857         struct mlx5_priv *priv = dev->data->dev_private;
 858         unsigned int i;
 859
 860         for (i = 0; i != priv->rxqs_n; ++i) {
 861                 struct mlx5_rxq_ctrl *rxq_ctrl;
 862                 unsigned int j;
 863
 864                 if (!(*priv->rxqs)[i])
 865                         continue;
 866                 rxq_ctrl = container_of((*priv->rxqs)[i],
 867                                         struct mlx5_rxq_ctrl, rxq);
 868                 rxq_ctrl->flow_mark_n = 0;
 869                 rxq_ctrl->rxq.mark = 0;
 870                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 871                         rxq_ctrl->flow_tunnels_n[j] = 0;
 872                 rxq_ctrl->rxq.tunnel = 0;
 873         }
 874 }
 875
 876 /*
 877  * return a pointer to the desired action in the list of actions.
 878  *
 879  * @param[in] actions
 880  *   The list of actions to search the action in.
 881  * @param[in] action
 882  *   The action to find.
 883  *
 884  * @return
 885  *   Pointer to the action in the list, if found. NULL otherwise.
 886  */
 887 const struct rte_flow_action *
 888 mlx5_flow_find_action(const struct rte_flow_action *actions,
 889                       enum rte_flow_action_type action)
 890 {
 891         if (actions == NULL)
 892                 return NULL;
 893         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
 894                 if (actions->type == action)
 895                         return actions;
 896         return NULL;
 897 }
 898
 899 /*
 900  * Validate the flag action.
 901  *
 902  * @param[in] action_flags
 903  *   Bit-fields that holds the actions detected until now.
 904  * @param[in] attr
 905  *   Attributes of flow that includes this action.
 906  * @param[out] error
 907  *   Pointer to error structure.
 908  *
 909  * @return
 910  *   0 on success, a negative errno value otherwise and rte_errno is set.
 911  */
 912 int
 913 mlx5_flow_validate_action_flag(uint64_t action_flags,
 914                                const struct rte_flow_attr *attr,
 915                                struct rte_flow_error *error)
 916 {
 917         if (action_flags & MLX5_FLOW_ACTION_MARK)
 918                 return rte_flow_error_set(error, EINVAL,
 919                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 920                                           "can't mark and flag in same flow");
 921         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 922                 return rte_flow_error_set(error, EINVAL,
 923                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 924                                           "can't have 2 flag"
 925                                           " actions in same flow");
 926         if (attr->egress)
 927                 return rte_flow_error_set(error, ENOTSUP,
 928                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 929                                           "flag action not supported for "
 930                                           "egress");
 931         return 0;
 932 }
 933
 934 /*
 935  * Validate the mark action.
 936  *
 937  * @param[in] action
 938  *   Pointer to the queue action.
 939  * @param[in] action_flags
 940  *   Bit-fields that holds the actions detected until now.
 941  * @param[in] attr
 942  *   Attributes of flow that includes this action.
 943  * @param[out] error
 944  *   Pointer to error structure.
 945  *
 946  * @return
 947  *   0 on success, a negative errno value otherwise and rte_errno is set.
 948  */
 949 int
 950 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 951                                uint64_t action_flags,
 952                                const struct rte_flow_attr *attr,
 953                                struct rte_flow_error *error)
 954 {
 955         const struct rte_flow_action_mark *mark = action->conf;
 956
 957         if (!mark)
 958                 return rte_flow_error_set(error, EINVAL,
 959                                           RTE_FLOW_ERROR_TYPE_ACTION,
 960                                           action,
 961                                           "configuration cannot be null");
 962         if (mark->id >= MLX5_FLOW_MARK_MAX)
 963                 return rte_flow_error_set(error, EINVAL,
 964                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 965                                           &mark->id,
 966                                           "mark id must in 0 <= id < "
 967                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 968         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 969                 return rte_flow_error_set(error, EINVAL,
 970                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 971                                           "can't flag and mark in same flow");
 972         if (action_flags & MLX5_FLOW_ACTION_MARK)
 973                 return rte_flow_error_set(error, EINVAL,
 974                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 975                                           "can't have 2 mark actions in same"
 976                                           " flow");
 977         if (attr->egress)
 978                 return rte_flow_error_set(error, ENOTSUP,
 979                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 980                                           "mark action not supported for "
 981                                           "egress");
 982         return 0;
 983 }
 984
 985 /*
 986  * Validate the drop action.
 987  *
 988  * @param[in] action_flags
 989  *   Bit-fields that holds the actions detected until now.
 990  * @param[in] attr
 991  *   Attributes of flow that includes this action.
 992  * @param[out] error
 993  *   Pointer to error structure.
 994  *
 995  * @return
 996  *   0 on success, a negative errno value otherwise and rte_errno is set.
 997  */
 998 int
 999 mlx5_flow_validate_action_drop(uint64_t action_flags __rte_unused,
1000                                const struct rte_flow_attr *attr,
1001                                struct rte_flow_error *error)
1002 {
1003         if (attr->egress)
1004                 return rte_flow_error_set(error, ENOTSUP,
1005                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1006                                           "drop action not supported for "
1007                                           "egress");
1008         return 0;
1009 }
1010
1011 /*
1012  * Validate the queue action.
1013  *
1014  * @param[in] action
1015  *   Pointer to the queue action.
1016  * @param[in] action_flags
1017  *   Bit-fields that holds the actions detected until now.
1018  * @param[in] dev
1019  *   Pointer to the Ethernet device structure.
1020  * @param[in] attr
1021  *   Attributes of flow that includes this action.
1022  * @param[out] error
1023  *   Pointer to error structure.
1024  *
1025  * @return
1026  *   0 on success, a negative errno value otherwise and rte_errno is set.
1027  */
1028 int
1029 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
1030                                 uint64_t action_flags,
1031                                 struct rte_eth_dev *dev,
1032                                 const struct rte_flow_attr *attr,
1033                                 struct rte_flow_error *error)
1034 {
1035         struct mlx5_priv *priv = dev->data->dev_private;
1036         const struct rte_flow_action_queue *queue = action->conf;
1037
1038         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1039                 return rte_flow_error_set(error, EINVAL,
1040                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1041                                           "can't have 2 fate actions in"
1042                                           " same flow");
1043         if (!priv->rxqs_n)
1044                 return rte_flow_error_set(error, EINVAL,
1045                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1046                                           NULL, "No Rx queues configured");
1047         if (queue->index >= priv->rxqs_n)
1048                 return rte_flow_error_set(error, EINVAL,
1049                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1050                                           &queue->index,
1051                                           "queue index out of range");
1052         if (!(*priv->rxqs)[queue->index])
1053                 return rte_flow_error_set(error, EINVAL,
1054                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1055                                           &queue->index,
1056                                           "queue is not configured");
1057         if (attr->egress)
1058                 return rte_flow_error_set(error, ENOTSUP,
1059                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1060                                           "queue action not supported for "
1061                                           "egress");
1062         return 0;
1063 }
1064
1065 /*
1066  * Validate the rss action.
1067  *
1068  * @param[in] action
1069  *   Pointer to the queue action.
1070  * @param[in] action_flags
1071  *   Bit-fields that holds the actions detected until now.
1072  * @param[in] dev
1073  *   Pointer to the Ethernet device structure.
1074  * @param[in] attr
1075  *   Attributes of flow that includes this action.
1076  * @param[in] item_flags
1077  *   Items that were detected.
1078  * @param[out] error
1079  *   Pointer to error structure.
1080  *
1081  * @return
1082  *   0 on success, a negative errno value otherwise and rte_errno is set.
1083  */
1084 int
1085 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
1086                               uint64_t action_flags,
1087                               struct rte_eth_dev *dev,
1088                               const struct rte_flow_attr *attr,
1089                               uint64_t item_flags,
1090                               struct rte_flow_error *error)
1091 {
1092         struct mlx5_priv *priv = dev->data->dev_private;
1093         const struct rte_flow_action_rss *rss = action->conf;
1094         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1095         unsigned int i;
1096
1097         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1098                 return rte_flow_error_set(error, EINVAL,
1099                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1100                                           "can't have 2 fate actions"
1101                                           " in same flow");
1102         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
1103             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
1104                 return rte_flow_error_set(error, ENOTSUP,
1105                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1106                                           &rss->func,
1107                                           "RSS hash function not supported");
1108 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1109         if (rss->level > 2)
1110 #else
1111         if (rss->level > 1)
1112 #endif
1113                 return rte_flow_error_set(error, ENOTSUP,
1114                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1115                                           &rss->level,
1116                                           "tunnel RSS is not supported");
1117         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
1118         if (rss->key_len == 0 && rss->key != NULL)
1119                 return rte_flow_error_set(error, ENOTSUP,
1120                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1121                                           &rss->key_len,
1122                                           "RSS hash key length 0");
1123         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
1124                 return rte_flow_error_set(error, ENOTSUP,
1125                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1126                                           &rss->key_len,
1127                                           "RSS hash key too small");
1128         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
1129                 return rte_flow_error_set(error, ENOTSUP,
1130                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1131                                           &rss->key_len,
1132                                           "RSS hash key too large");
1133         if (rss->queue_num > priv->config.ind_table_max_size)
1134                 return rte_flow_error_set(error, ENOTSUP,
1135                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1136                                           &rss->queue_num,
1137                                           "number of queues too large");
1138         if (rss->types & MLX5_RSS_HF_MASK)
1139                 return rte_flow_error_set(error, ENOTSUP,
1140                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1141                                           &rss->types,
1142                                           "some RSS protocols are not"
1143                                           " supported");
1144         if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
1145             !(rss->types & ETH_RSS_IP))
1146                 return rte_flow_error_set(error, EINVAL,
1147                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1148                                           "L3 partial RSS requested but L3 RSS"
1149                                           " type not specified");
1150         if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
1151             !(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
1152                 return rte_flow_error_set(error, EINVAL,
1153                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1154                                           "L4 partial RSS requested but L4 RSS"
1155                                           " type not specified");
1156         if (!priv->rxqs_n)
1157                 return rte_flow_error_set(error, EINVAL,
1158                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1159                                           NULL, "No Rx queues configured");
1160         if (!rss->queue_num)
1161                 return rte_flow_error_set(error, EINVAL,
1162                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1163                                           NULL, "No queues configured");
1164         for (i = 0; i != rss->queue_num; ++i) {
1165                 if (rss->queue[i] >= priv->rxqs_n)
1166                         return rte_flow_error_set
1167                                 (error, EINVAL,
1168                                  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1169                                  &rss->queue[i], "queue index out of range");
1170                 if (!(*priv->rxqs)[rss->queue[i]])
1171                         return rte_flow_error_set
1172                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1173                                  &rss->queue[i], "queue is not configured");
1174         }
1175         if (attr->egress)
1176                 return rte_flow_error_set(error, ENOTSUP,
1177                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1178                                           "rss action not supported for "
1179                                           "egress");
1180         if (rss->level > 1 &&  !tunnel)
1181                 return rte_flow_error_set(error, EINVAL,
1182                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1183                                           "inner RSS is not supported for "
1184                                           "non-tunnel flows");
1185         return 0;
1186 }
1187
1188 /*
1189  * Validate the count action.
1190  *
1191  * @param[in] dev
1192  *   Pointer to the Ethernet device structure.
1193  * @param[in] attr
1194  *   Attributes of flow that includes this action.
1195  * @param[out] error
1196  *   Pointer to error structure.
1197  *
1198  * @return
1199  *   0 on success, a negative errno value otherwise and rte_errno is set.
1200  */
1201 int
1202 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
1203                                 const struct rte_flow_attr *attr,
1204                                 struct rte_flow_error *error)
1205 {
1206         if (attr->egress)
1207                 return rte_flow_error_set(error, ENOTSUP,
1208                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1209                                           "count action not supported for "
1210                                           "egress");
1211         return 0;
1212 }
1213
1214 /**
1215  * Verify the @p attributes will be correctly understood by the NIC and store
1216  * them in the @p flow if everything is correct.
1217  *
1218  * @param[in] dev
1219  *   Pointer to the Ethernet device structure.
1220  * @param[in] attributes
1221  *   Pointer to flow attributes
1222  * @param[out] error
1223  *   Pointer to error structure.
1224  *
1225  * @return
1226  *   0 on success, a negative errno value otherwise and rte_errno is set.
1227  */
1228 int
1229 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1230                               const struct rte_flow_attr *attributes,
1231                               struct rte_flow_error *error)
1232 {
1233         struct mlx5_priv *priv = dev->data->dev_private;
1234         uint32_t priority_max = priv->config.flow_prio - 1;
1235
1236         if (attributes->group)
1237                 return rte_flow_error_set(error, ENOTSUP,
1238                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1239                                           NULL, "groups is not supported");
1240         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1241             attributes->priority >= priority_max)
1242                 return rte_flow_error_set(error, ENOTSUP,
1243                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1244                                           NULL, "priority out of range");
1245         if (attributes->egress)
1246                 return rte_flow_error_set(error, ENOTSUP,
1247                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1248                                           "egress is not supported");
1249         if (attributes->transfer && !priv->config.dv_esw_en)
1250                 return rte_flow_error_set(error, ENOTSUP,
1251                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1252                                           NULL, "transfer is not supported");
1253         if (!attributes->ingress)
1254                 return rte_flow_error_set(error, EINVAL,
1255                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1256                                           NULL,
1257                                           "ingress attribute is mandatory");
1258         return 0;
1259 }
1260
1261 /**
1262  * Validate ICMP6 item.
1263  *
1264  * @param[in] item
1265  *   Item specification.
1266  * @param[in] item_flags
1267  *   Bit-fields that holds the items detected until now.
1268  * @param[out] error
1269  *   Pointer to error structure.
1270  *
1271  * @return
1272  *   0 on success, a negative errno value otherwise and rte_errno is set.
1273  */
1274 int
1275 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1276                                uint64_t item_flags,
1277                                uint8_t target_protocol,
1278                                struct rte_flow_error *error)
1279 {
1280         const struct rte_flow_item_icmp6 *mask = item->mask;
1281         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1282         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1283                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1284         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1285                                       MLX5_FLOW_LAYER_OUTER_L4;
1286         int ret;
1287
1288         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1289                 return rte_flow_error_set(error, EINVAL,
1290                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1291                                           "protocol filtering not compatible"
1292                                           " with ICMP6 layer");
1293         if (!(item_flags & l3m))
1294                 return rte_flow_error_set(error, EINVAL,
1295                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1296                                           "IPv6 is mandatory to filter on"
1297                                           " ICMP6");
1298         if (item_flags & l4m)
1299                 return rte_flow_error_set(error, EINVAL,
1300                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1301                                           "multiple L4 layers not supported");
1302         if (!mask)
1303                 mask = &rte_flow_item_icmp6_mask;
1304         ret = mlx5_flow_item_acceptable
1305                 (item, (const uint8_t *)mask,
1306                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1307                  sizeof(struct rte_flow_item_icmp6), error);
1308         if (ret < 0)
1309                 return ret;
1310         return 0;
1311 }
1312
1313 /**
1314  * Validate ICMP item.
1315  *
1316  * @param[in] item
1317  *   Item specification.
1318  * @param[in] item_flags
1319  *   Bit-fields that holds the items detected until now.
1320  * @param[out] error
1321  *   Pointer to error structure.
1322  *
1323  * @return
1324  *   0 on success, a negative errno value otherwise and rte_errno is set.
1325  */
1326 int
1327 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1328                              uint64_t item_flags,
1329                              uint8_t target_protocol,
1330                              struct rte_flow_error *error)
1331 {
1332         const struct rte_flow_item_icmp *mask = item->mask;
1333         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1334         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1335                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1336         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1337                                       MLX5_FLOW_LAYER_OUTER_L4;
1338         int ret;
1339
1340         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1341                 return rte_flow_error_set(error, EINVAL,
1342                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1343                                           "protocol filtering not compatible"
1344                                           " with ICMP layer");
1345         if (!(item_flags & l3m))
1346                 return rte_flow_error_set(error, EINVAL,
1347                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1348                                           "IPv4 is mandatory to filter"
1349                                           " on ICMP");
1350         if (item_flags & l4m)
1351                 return rte_flow_error_set(error, EINVAL,
1352                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1353                                           "multiple L4 layers not supported");
1354         if (!mask)
1355                 mask = &rte_flow_item_icmp_mask;
1356         ret = mlx5_flow_item_acceptable
1357                 (item, (const uint8_t *)mask,
1358                  (const uint8_t *)&rte_flow_item_icmp_mask,
1359                  sizeof(struct rte_flow_item_icmp), error);
1360         if (ret < 0)
1361                 return ret;
1362         return 0;
1363 }
1364
1365 /**
1366  * Validate Ethernet item.
1367  *
1368  * @param[in] item
1369  *   Item specification.
1370  * @param[in] item_flags
1371  *   Bit-fields that holds the items detected until now.
1372  * @param[out] error
1373  *   Pointer to error structure.
1374  *
1375  * @return
1376  *   0 on success, a negative errno value otherwise and rte_errno is set.
1377  */
1378 int
1379 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1380                             uint64_t item_flags,
1381                             struct rte_flow_error *error)
1382 {
1383         const struct rte_flow_item_eth *mask = item->mask;
1384         const struct rte_flow_item_eth nic_mask = {
1385                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1386                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1387                 .type = RTE_BE16(0xffff),
1388         };
1389         int ret;
1390         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1391         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1392                                        MLX5_FLOW_LAYER_OUTER_L2;
1393
1394         if (item_flags & ethm)
1395                 return rte_flow_error_set(error, ENOTSUP,
1396                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1397                                           "multiple L2 layers not supported");
1398         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
1399             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
1400                 return rte_flow_error_set(error, EINVAL,
1401                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1402                                           "L2 layer should not follow "
1403                                           "L3 layers");
1404         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
1405             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
1406                 return rte_flow_error_set(error, EINVAL,
1407                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1408                                           "L2 layer should not follow VLAN");
1409         if (!mask)
1410                 mask = &rte_flow_item_eth_mask;
1411         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1412                                         (const uint8_t *)&nic_mask,
1413                                         sizeof(struct rte_flow_item_eth),
1414                                         error);
1415         return ret;
1416 }
1417
1418 /**
1419  * Validate VLAN item.
1420  *
1421  * @param[in] item
1422  *   Item specification.
1423  * @param[in] item_flags
1424  *   Bit-fields that holds the items detected until now.
1425  * @param[in] dev
1426  *   Ethernet device flow is being created on.
1427  * @param[out] error
1428  *   Pointer to error structure.
1429  *
1430  * @return
1431  *   0 on success, a negative errno value otherwise and rte_errno is set.
1432  */
1433 int
1434 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1435                              uint64_t item_flags,
1436                              struct rte_eth_dev *dev,
1437                              struct rte_flow_error *error)
1438 {
1439         const struct rte_flow_item_vlan *spec = item->spec;
1440         const struct rte_flow_item_vlan *mask = item->mask;
1441         const struct rte_flow_item_vlan nic_mask = {
1442                 .tci = RTE_BE16(UINT16_MAX),
1443                 .inner_type = RTE_BE16(UINT16_MAX),
1444         };
1445         uint16_t vlan_tag = 0;
1446         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1447         int ret;
1448         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1449                                         MLX5_FLOW_LAYER_INNER_L4) :
1450                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1451                                         MLX5_FLOW_LAYER_OUTER_L4);
1452         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1453                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1454
1455         if (item_flags & vlanm)
1456                 return rte_flow_error_set(error, EINVAL,
1457                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1458                                           "multiple VLAN layers not supported");
1459         else if ((item_flags & l34m) != 0)
1460                 return rte_flow_error_set(error, EINVAL,
1461                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1462                                           "VLAN cannot follow L3/L4 layer");
1463         if (!mask)
1464                 mask = &rte_flow_item_vlan_mask;
1465         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1466                                         (const uint8_t *)&nic_mask,
1467                                         sizeof(struct rte_flow_item_vlan),
1468                                         error);
1469         if (ret)
1470                 return ret;
1471         if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
1472                 struct mlx5_priv *priv = dev->data->dev_private;
1473
1474                 if (priv->vmwa_context) {
1475                         /*
1476                          * Non-NULL context means we have a virtual machine
1477                          * and SR-IOV enabled, we have to create VLAN interface
1478                          * to make hypervisor to setup E-Switch vport
1479                          * context correctly. We avoid creating the multiple
1480                          * VLAN interfaces, so we cannot support VLAN tag mask.
1481                          */
1482                         return rte_flow_error_set(error, EINVAL,
1483                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1484                                                   item,
1485                                                   "VLAN tag mask is not"
1486                                                   " supported in virtual"
1487                                                   " environment");
1488                 }
1489         }
1490         if (spec) {
1491                 vlan_tag = spec->tci;
1492                 vlan_tag &= mask->tci;
1493         }
1494         /*
1495          * From verbs perspective an empty VLAN is equivalent
1496          * to a packet without VLAN layer.
1497          */
1498         if (!vlan_tag)
1499                 return rte_flow_error_set(error, EINVAL,
1500                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1501                                           item->spec,
1502                                           "VLAN cannot be empty");
1503         return 0;
1504 }
1505
1506 /**
1507  * Validate IPV4 item.
1508  *
1509  * @param[in] item
1510  *   Item specification.
1511  * @param[in] item_flags
1512  *   Bit-fields that holds the items detected until now.
1513  * @param[in] acc_mask
1514  *   Acceptable mask, if NULL default internal default mask
1515  *   will be used to check whether item fields are supported.
1516  * @param[out] error
1517  *   Pointer to error structure.
1518  *
1519  * @return
1520  *   0 on success, a negative errno value otherwise and rte_errno is set.
1521  */
1522 int
1523 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1524                              uint64_t item_flags,
1525                              uint64_t last_item,
1526                              uint16_t ether_type,
1527                              const struct rte_flow_item_ipv4 *acc_mask,
1528                              struct rte_flow_error *error)
1529 {
1530         const struct rte_flow_item_ipv4 *mask = item->mask;
1531         const struct rte_flow_item_ipv4 *spec = item->spec;
1532         const struct rte_flow_item_ipv4 nic_mask = {
1533                 .hdr = {
1534                         .src_addr = RTE_BE32(0xffffffff),
1535                         .dst_addr = RTE_BE32(0xffffffff),
1536                         .type_of_service = 0xff,
1537                         .next_proto_id = 0xff,
1538                 },
1539         };
1540         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1541         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1542                                       MLX5_FLOW_LAYER_OUTER_L3;
1543         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1544                                       MLX5_FLOW_LAYER_OUTER_L4;
1545         int ret;
1546         uint8_t next_proto = 0xFF;
1547         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1548                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1549                                   MLX5_FLOW_LAYER_INNER_VLAN);
1550
1551         if ((last_item & l2_vlan) && ether_type &&
1552             ether_type != RTE_ETHER_TYPE_IPV4)
1553                 return rte_flow_error_set(error, EINVAL,
1554                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1555                                           "IPv4 cannot follow L2/VLAN layer "
1556                                           "which ether type is not IPv4");
1557         if (item_flags & MLX5_FLOW_LAYER_IPIP) {
1558                 if (mask && spec)
1559                         next_proto = mask->hdr.next_proto_id &
1560                                      spec->hdr.next_proto_id;
1561                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1562                         return rte_flow_error_set(error, EINVAL,
1563                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1564                                                   item,
1565                                                   "multiple tunnel "
1566                                                   "not supported");
1567         }
1568         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
1569                 return rte_flow_error_set(error, EINVAL,
1570                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1571                                           "wrong tunnel type - IPv6 specified "
1572                                           "but IPv4 item provided");
1573         if (item_flags & l3m)
1574                 return rte_flow_error_set(error, ENOTSUP,
1575                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1576                                           "multiple L3 layers not supported");
1577         else if (item_flags & l4m)
1578                 return rte_flow_error_set(error, EINVAL,
1579                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1580                                           "L3 cannot follow an L4 layer.");
1581         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1582                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1583                 return rte_flow_error_set(error, EINVAL,
1584                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1585                                           "L3 cannot follow an NVGRE layer.");
1586         if (!mask)
1587                 mask = &rte_flow_item_ipv4_mask;
1588         else if (mask->hdr.next_proto_id != 0 &&
1589                  mask->hdr.next_proto_id != 0xff)
1590                 return rte_flow_error_set(error, EINVAL,
1591                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1592                                           "partial mask is not supported"
1593                                           " for protocol");
1594         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1595                                         acc_mask ? (const uint8_t *)acc_mask
1596                                                  : (const uint8_t *)&nic_mask,
1597                                         sizeof(struct rte_flow_item_ipv4),
1598                                         error);
1599         if (ret < 0)
1600                 return ret;
1601         return 0;
1602 }
1603
1604 /**
1605  * Validate IPV6 item.
1606  *
1607  * @param[in] item
1608  *   Item specification.
1609  * @param[in] item_flags
1610  *   Bit-fields that holds the items detected until now.
1611  * @param[in] acc_mask
1612  *   Acceptable mask, if NULL default internal default mask
1613  *   will be used to check whether item fields are supported.
1614  * @param[out] error
1615  *   Pointer to error structure.
1616  *
1617  * @return
1618  *   0 on success, a negative errno value otherwise and rte_errno is set.
1619  */
1620 int
1621 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1622                              uint64_t item_flags,
1623                              uint64_t last_item,
1624                              uint16_t ether_type,
1625                              const struct rte_flow_item_ipv6 *acc_mask,
1626                              struct rte_flow_error *error)
1627 {
1628         const struct rte_flow_item_ipv6 *mask = item->mask;
1629         const struct rte_flow_item_ipv6 *spec = item->spec;
1630         const struct rte_flow_item_ipv6 nic_mask = {
1631                 .hdr = {
1632                         .src_addr =
1633                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1634                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1635                         .dst_addr =
1636                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1637                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1638                         .vtc_flow = RTE_BE32(0xffffffff),
1639                         .proto = 0xff,
1640                         .hop_limits = 0xff,
1641                 },
1642         };
1643         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1644         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1645                                       MLX5_FLOW_LAYER_OUTER_L3;
1646         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1647                                       MLX5_FLOW_LAYER_OUTER_L4;
1648         int ret;
1649         uint8_t next_proto = 0xFF;
1650         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1651                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1652                                   MLX5_FLOW_LAYER_INNER_VLAN);
1653
1654         if ((last_item & l2_vlan) && ether_type &&
1655             ether_type != RTE_ETHER_TYPE_IPV6)
1656                 return rte_flow_error_set(error, EINVAL,
1657                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1658                                           "IPv6 cannot follow L2/VLAN layer "
1659                                           "which ether type is not IPv6");
1660         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
1661                 if (mask && spec)
1662                         next_proto = mask->hdr.proto & spec->hdr.proto;
1663                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1664                         return rte_flow_error_set(error, EINVAL,
1665                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1666                                                   item,
1667                                                   "multiple tunnel "
1668                                                   "not supported");
1669         }
1670         if (item_flags & MLX5_FLOW_LAYER_IPIP)
1671                 return rte_flow_error_set(error, EINVAL,
1672                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1673                                           "wrong tunnel type - IPv4 specified "
1674                                           "but IPv6 item provided");
1675         if (item_flags & l3m)
1676                 return rte_flow_error_set(error, ENOTSUP,
1677                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1678                                           "multiple L3 layers not supported");
1679         else if (item_flags & l4m)
1680                 return rte_flow_error_set(error, EINVAL,
1681                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1682                                           "L3 cannot follow an L4 layer.");
1683         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1684                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1685                 return rte_flow_error_set(error, EINVAL,
1686                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1687                                           "L3 cannot follow an NVGRE layer.");
1688         if (!mask)
1689                 mask = &rte_flow_item_ipv6_mask;
1690         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1691                                         acc_mask ? (const uint8_t *)acc_mask
1692                                                  : (const uint8_t *)&nic_mask,
1693                                         sizeof(struct rte_flow_item_ipv6),
1694                                         error);
1695         if (ret < 0)
1696                 return ret;
1697         return 0;
1698 }
1699
1700 /**
1701  * Validate UDP item.
1702  *
1703  * @param[in] item
1704  *   Item specification.
1705  * @param[in] item_flags
1706  *   Bit-fields that holds the items detected until now.
1707  * @param[in] target_protocol
1708  *   The next protocol in the previous item.
1709  * @param[in] flow_mask
1710  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1711  * @param[out] error
1712  *   Pointer to error structure.
1713  *
1714  * @return
1715  *   0 on success, a negative errno value otherwise and rte_errno is set.
1716  */
1717 int
1718 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1719                             uint64_t item_flags,
1720                             uint8_t target_protocol,
1721                             struct rte_flow_error *error)
1722 {
1723         const struct rte_flow_item_udp *mask = item->mask;
1724         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1725         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1726                                       MLX5_FLOW_LAYER_OUTER_L3;
1727         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1728                                       MLX5_FLOW_LAYER_OUTER_L4;
1729         int ret;
1730
1731         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1732                 return rte_flow_error_set(error, EINVAL,
1733                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1734                                           "protocol filtering not compatible"
1735                                           " with UDP layer");
1736         if (!(item_flags & l3m))
1737                 return rte_flow_error_set(error, EINVAL,
1738                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1739                                           "L3 is mandatory to filter on L4");
1740         if (item_flags & l4m)
1741                 return rte_flow_error_set(error, EINVAL,
1742                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1743                                           "multiple L4 layers not supported");
1744         if (!mask)
1745                 mask = &rte_flow_item_udp_mask;
1746         ret = mlx5_flow_item_acceptable
1747                 (item, (const uint8_t *)mask,
1748                  (const uint8_t *)&rte_flow_item_udp_mask,
1749                  sizeof(struct rte_flow_item_udp), error);
1750         if (ret < 0)
1751                 return ret;
1752         return 0;
1753 }
1754
1755 /**
1756  * Validate TCP item.
1757  *
1758  * @param[in] item
1759  *   Item specification.
1760  * @param[in] item_flags
1761  *   Bit-fields that holds the items detected until now.
1762  * @param[in] target_protocol
1763  *   The next protocol in the previous item.
1764  * @param[out] error
1765  *   Pointer to error structure.
1766  *
1767  * @return
1768  *   0 on success, a negative errno value otherwise and rte_errno is set.
1769  */
1770 int
1771 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1772                             uint64_t item_flags,
1773                             uint8_t target_protocol,
1774                             const struct rte_flow_item_tcp *flow_mask,
1775                             struct rte_flow_error *error)
1776 {
1777         const struct rte_flow_item_tcp *mask = item->mask;
1778         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1779         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1780                                       MLX5_FLOW_LAYER_OUTER_L3;
1781         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1782                                       MLX5_FLOW_LAYER_OUTER_L4;
1783         int ret;
1784
1785         assert(flow_mask);
1786         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1787                 return rte_flow_error_set(error, EINVAL,
1788                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1789                                           "protocol filtering not compatible"
1790                                           " with TCP layer");
1791         if (!(item_flags & l3m))
1792                 return rte_flow_error_set(error, EINVAL,
1793                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1794                                           "L3 is mandatory to filter on L4");
1795         if (item_flags & l4m)
1796                 return rte_flow_error_set(error, EINVAL,
1797                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1798                                           "multiple L4 layers not supported");
1799         if (!mask)
1800                 mask = &rte_flow_item_tcp_mask;
1801         ret = mlx5_flow_item_acceptable
1802                 (item, (const uint8_t *)mask,
1803                  (const uint8_t *)flow_mask,
1804                  sizeof(struct rte_flow_item_tcp), error);
1805         if (ret < 0)
1806                 return ret;
1807         return 0;
1808 }
1809
1810 /**
1811  * Validate VXLAN item.
1812  *
1813  * @param[in] item
1814  *   Item specification.
1815  * @param[in] item_flags
1816  *   Bit-fields that holds the items detected until now.
1817  * @param[in] target_protocol
1818  *   The next protocol in the previous item.
1819  * @param[out] error
1820  *   Pointer to error structure.
1821  *
1822  * @return
1823  *   0 on success, a negative errno value otherwise and rte_errno is set.
1824  */
1825 int
1826 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1827                               uint64_t item_flags,
1828                               struct rte_flow_error *error)
1829 {
1830         const struct rte_flow_item_vxlan *spec = item->spec;
1831         const struct rte_flow_item_vxlan *mask = item->mask;
1832         int ret;
1833         union vni {
1834                 uint32_t vlan_id;
1835                 uint8_t vni[4];
1836         } id = { .vlan_id = 0, };
1837         uint32_t vlan_id = 0;
1838
1839
1840         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1841                 return rte_flow_error_set(error, ENOTSUP,
1842                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1843                                           "multiple tunnel layers not"
1844                                           " supported");
1845         /*
1846          * Verify only UDPv4 is present as defined in
1847          * https://tools.ietf.org/html/rfc7348
1848          */
1849         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1850                 return rte_flow_error_set(error, EINVAL,
1851                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1852                                           "no outer UDP layer found");
1853         if (!mask)
1854                 mask = &rte_flow_item_vxlan_mask;
1855         ret = mlx5_flow_item_acceptable
1856                 (item, (const uint8_t *)mask,
1857                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1858                  sizeof(struct rte_flow_item_vxlan),
1859                  error);
1860         if (ret < 0)
1861                 return ret;
1862         if (spec) {
1863                 memcpy(&id.vni[1], spec->vni, 3);
1864                 vlan_id = id.vlan_id;
1865                 memcpy(&id.vni[1], mask->vni, 3);
1866                 vlan_id &= id.vlan_id;
1867         }
1868         /*
1869          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1870          * only this layer is defined in the Verbs specification it is
1871          * interpreted as wildcard and all packets will match this
1872          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1873          * udp), all packets matching the layers before will also
1874          * match this rule.  To avoid such situation, VNI 0 is
1875          * currently refused.
1876          */
1877         if (!vlan_id)
1878                 return rte_flow_error_set(error, ENOTSUP,
1879                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1880                                           "VXLAN vni cannot be 0");
1881         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1882                 return rte_flow_error_set(error, ENOTSUP,
1883                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1884                                           "VXLAN tunnel must be fully defined");
1885         return 0;
1886 }
1887
1888 /**
1889  * Validate VXLAN_GPE item.
1890  *
1891  * @param[in] item
1892  *   Item specification.
1893  * @param[in] item_flags
1894  *   Bit-fields that holds the items detected until now.
1895  * @param[in] priv
1896  *   Pointer to the private data structure.
1897  * @param[in] target_protocol
1898  *   The next protocol in the previous item.
1899  * @param[out] error
1900  *   Pointer to error structure.
1901  *
1902  * @return
1903  *   0 on success, a negative errno value otherwise and rte_errno is set.
1904  */
1905 int
1906 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1907                                   uint64_t item_flags,
1908                                   struct rte_eth_dev *dev,
1909                                   struct rte_flow_error *error)
1910 {
1911         struct mlx5_priv *priv = dev->data->dev_private;
1912         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1913         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1914         int ret;
1915         union vni {
1916                 uint32_t vlan_id;
1917                 uint8_t vni[4];
1918         } id = { .vlan_id = 0, };
1919         uint32_t vlan_id = 0;
1920
1921         if (!priv->config.l3_vxlan_en)
1922                 return rte_flow_error_set(error, ENOTSUP,
1923                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1924                                           "L3 VXLAN is not enabled by device"
1925                                           " parameter and/or not configured in"
1926                                           " firmware");
1927         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1928                 return rte_flow_error_set(error, ENOTSUP,
1929                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1930                                           "multiple tunnel layers not"
1931                                           " supported");
1932         /*
1933          * Verify only UDPv4 is present as defined in
1934          * https://tools.ietf.org/html/rfc7348
1935          */
1936         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1937                 return rte_flow_error_set(error, EINVAL,
1938                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1939                                           "no outer UDP layer found");
1940         if (!mask)
1941                 mask = &rte_flow_item_vxlan_gpe_mask;
1942         ret = mlx5_flow_item_acceptable
1943                 (item, (const uint8_t *)mask,
1944                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1945                  sizeof(struct rte_flow_item_vxlan_gpe),
1946                  error);
1947         if (ret < 0)
1948                 return ret;
1949         if (spec) {
1950                 if (spec->protocol)
1951                         return rte_flow_error_set(error, ENOTSUP,
1952                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1953                                                   item,
1954                                                   "VxLAN-GPE protocol"
1955                                                   " not supported");
1956                 memcpy(&id.vni[1], spec->vni, 3);
1957                 vlan_id = id.vlan_id;
1958                 memcpy(&id.vni[1], mask->vni, 3);
1959                 vlan_id &= id.vlan_id;
1960         }
1961         /*
1962          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1963          * layer is defined in the Verbs specification it is interpreted as
1964          * wildcard and all packets will match this rule, if it follows a full
1965          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1966          * before will also match this rule.  To avoid such situation, VNI 0
1967          * is currently refused.
1968          */
1969         if (!vlan_id)
1970                 return rte_flow_error_set(error, ENOTSUP,
1971                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1972                                           "VXLAN-GPE vni cannot be 0");
1973         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1974                 return rte_flow_error_set(error, ENOTSUP,
1975                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1976                                           "VXLAN-GPE tunnel must be fully"
1977                                           " defined");
1978         return 0;
1979 }
1980 /**
1981  * Validate GRE Key item.
1982  *
1983  * @param[in] item
1984  *   Item specification.
1985  * @param[in] item_flags
1986  *   Bit flags to mark detected items.
1987  * @param[in] gre_item
1988  *   Pointer to gre_item
1989  * @param[out] error
1990  *   Pointer to error structure.
1991  *
1992  * @return
1993  *   0 on success, a negative errno value otherwise and rte_errno is set.
1994  */
1995 int
1996 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
1997                                 uint64_t item_flags,
1998                                 const struct rte_flow_item *gre_item,
1999                                 struct rte_flow_error *error)
2000 {
2001         const rte_be32_t *mask = item->mask;
2002         int ret = 0;
2003         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2004         const struct rte_flow_item_gre *gre_spec;
2005         const struct rte_flow_item_gre *gre_mask;
2006
2007         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2008                 return rte_flow_error_set(error, ENOTSUP,
2009                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2010                                           "Multiple GRE key not support");
2011         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2012                 return rte_flow_error_set(error, ENOTSUP,
2013                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2014                                           "No preceding GRE header");
2015         if (item_flags & MLX5_FLOW_LAYER_INNER)
2016                 return rte_flow_error_set(error, ENOTSUP,
2017                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2018                                           "GRE key following a wrong item");
2019         gre_mask = gre_item->mask;
2020         if (!gre_mask)
2021                 gre_mask = &rte_flow_item_gre_mask;
2022         gre_spec = gre_item->spec;
2023         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2024                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2025                 return rte_flow_error_set(error, EINVAL,
2026                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2027                                           "Key bit must be on");
2028
2029         if (!mask)
2030                 mask = &gre_key_default_mask;
2031         ret = mlx5_flow_item_acceptable
2032                 (item, (const uint8_t *)mask,
2033                  (const uint8_t *)&gre_key_default_mask,
2034                  sizeof(rte_be32_t), error);
2035         return ret;
2036 }
2037
2038 /**
2039  * Validate GRE item.
2040  *
2041  * @param[in] item
2042  *   Item specification.
2043  * @param[in] item_flags
2044  *   Bit flags to mark detected items.
2045  * @param[in] target_protocol
2046  *   The next protocol in the previous item.
2047  * @param[out] error
2048  *   Pointer to error structure.
2049  *
2050  * @return
2051  *   0 on success, a negative errno value otherwise and rte_errno is set.
2052  */
2053 int
2054 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2055                             uint64_t item_flags,
2056                             uint8_t target_protocol,
2057                             struct rte_flow_error *error)
2058 {
2059         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2060         const struct rte_flow_item_gre *mask = item->mask;
2061         int ret;
2062         const struct rte_flow_item_gre nic_mask = {
2063                 .c_rsvd0_ver = RTE_BE16(0xB000),
2064                 .protocol = RTE_BE16(UINT16_MAX),
2065         };
2066
2067         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2068                 return rte_flow_error_set(error, EINVAL,
2069                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2070                                           "protocol filtering not compatible"
2071                                           " with this GRE layer");
2072         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2073                 return rte_flow_error_set(error, ENOTSUP,
2074                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2075                                           "multiple tunnel layers not"
2076                                           " supported");
2077         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2078                 return rte_flow_error_set(error, ENOTSUP,
2079                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2080                                           "L3 Layer is missing");
2081         if (!mask)
2082                 mask = &rte_flow_item_gre_mask;
2083         ret = mlx5_flow_item_acceptable
2084                 (item, (const uint8_t *)mask,
2085                  (const uint8_t *)&nic_mask,
2086                  sizeof(struct rte_flow_item_gre), error);
2087         if (ret < 0)
2088                 return ret;
2089 #ifndef HAVE_MLX5DV_DR
2090 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2091         if (spec && (spec->protocol & mask->protocol))
2092                 return rte_flow_error_set(error, ENOTSUP,
2093                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2094                                           "without MPLS support the"
2095                                           " specification cannot be used for"
2096                                           " filtering");
2097 #endif
2098 #endif
2099         return 0;
2100 }
2101
2102 /**
2103  * Validate Geneve item.
2104  *
2105  * @param[in] item
2106  *   Item specification.
2107  * @param[in] itemFlags
2108  *   Bit-fields that holds the items detected until now.
2109  * @param[in] enPriv
2110  *   Pointer to the private data structure.
2111  * @param[out] error
2112  *   Pointer to error structure.
2113  *
2114  * @return
2115  *   0 on success, a negative errno value otherwise and rte_errno is set.
2116  */
2117
2118 int
2119 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2120                                uint64_t item_flags,
2121                                struct rte_eth_dev *dev,
2122                                struct rte_flow_error *error)
2123 {
2124         struct mlx5_priv *priv = dev->data->dev_private;
2125         const struct rte_flow_item_geneve *spec = item->spec;
2126         const struct rte_flow_item_geneve *mask = item->mask;
2127         int ret;
2128         uint16_t gbhdr;
2129         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2130                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2131         const struct rte_flow_item_geneve nic_mask = {
2132                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2133                 .vni = "\xff\xff\xff",
2134                 .protocol = RTE_BE16(UINT16_MAX),
2135         };
2136
2137         if (!(priv->config.hca_attr.flex_parser_protocols &
2138               MLX5_HCA_FLEX_GENEVE_ENABLED) ||
2139             !priv->config.hca_attr.tunnel_stateless_geneve_rx)
2140                 return rte_flow_error_set(error, ENOTSUP,
2141                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2142                                           "L3 Geneve is not enabled by device"
2143                                           " parameter and/or not configured in"
2144                                           " firmware");
2145         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2146                 return rte_flow_error_set(error, ENOTSUP,
2147                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2148                                           "multiple tunnel layers not"
2149                                           " supported");
2150         /*
2151          * Verify only UDPv4 is present as defined in
2152          * https://tools.ietf.org/html/rfc7348
2153          */
2154         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2155                 return rte_flow_error_set(error, EINVAL,
2156                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2157                                           "no outer UDP layer found");
2158         if (!mask)
2159                 mask = &rte_flow_item_geneve_mask;
2160         ret = mlx5_flow_item_acceptable
2161                                   (item, (const uint8_t *)mask,
2162                                    (const uint8_t *)&nic_mask,
2163                                    sizeof(struct rte_flow_item_geneve), error);
2164         if (ret)
2165                 return ret;
2166         if (spec) {
2167                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2168                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2169                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2170                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2171                         return rte_flow_error_set(error, ENOTSUP,
2172                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2173                                                   item,
2174                                                   "Geneve protocol unsupported"
2175                                                   " fields are being used");
2176                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2177                         return rte_flow_error_set
2178                                         (error, ENOTSUP,
2179                                          RTE_FLOW_ERROR_TYPE_ITEM,
2180                                          item,
2181                                          "Unsupported Geneve options length");
2182         }
2183         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2184                 return rte_flow_error_set
2185                                     (error, ENOTSUP,
2186                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2187                                      "Geneve tunnel must be fully defined");
2188         return 0;
2189 }
2190
2191 /**
2192  * Validate MPLS item.
2193  *
2194  * @param[in] dev
2195  *   Pointer to the rte_eth_dev structure.
2196  * @param[in] item
2197  *   Item specification.
2198  * @param[in] item_flags
2199  *   Bit-fields that holds the items detected until now.
2200  * @param[in] prev_layer
2201  *   The protocol layer indicated in previous item.
2202  * @param[out] error
2203  *   Pointer to error structure.
2204  *
2205  * @return
2206  *   0 on success, a negative errno value otherwise and rte_errno is set.
2207  */
2208 int
2209 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2210                              const struct rte_flow_item *item __rte_unused,
2211                              uint64_t item_flags __rte_unused,
2212                              uint64_t prev_layer __rte_unused,
2213                              struct rte_flow_error *error)
2214 {
2215 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2216         const struct rte_flow_item_mpls *mask = item->mask;
2217         struct mlx5_priv *priv = dev->data->dev_private;
2218         int ret;
2219
2220         if (!priv->config.mpls_en)
2221                 return rte_flow_error_set(error, ENOTSUP,
2222                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2223                                           "MPLS not supported or"
2224                                           " disabled in firmware"
2225                                           " configuration.");
2226         /* MPLS over IP, UDP, GRE is allowed */
2227         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2228                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2229                             MLX5_FLOW_LAYER_GRE)))
2230                 return rte_flow_error_set(error, EINVAL,
2231                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2232                                           "protocol filtering not compatible"
2233                                           " with MPLS layer");
2234         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2235         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2236             !(item_flags & MLX5_FLOW_LAYER_GRE))
2237                 return rte_flow_error_set(error, ENOTSUP,
2238                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2239                                           "multiple tunnel layers not"
2240                                           " supported");
2241         if (!mask)
2242                 mask = &rte_flow_item_mpls_mask;
2243         ret = mlx5_flow_item_acceptable
2244                 (item, (const uint8_t *)mask,
2245                  (const uint8_t *)&rte_flow_item_mpls_mask,
2246                  sizeof(struct rte_flow_item_mpls), error);
2247         if (ret < 0)
2248                 return ret;
2249         return 0;
2250 #endif
2251         return rte_flow_error_set(error, ENOTSUP,
2252                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2253                                   "MPLS is not supported by Verbs, please"
2254                                   " update.");
2255 }
2256
2257 /**
2258  * Validate NVGRE item.
2259  *
2260  * @param[in] item
2261  *   Item specification.
2262  * @param[in] item_flags
2263  *   Bit flags to mark detected items.
2264  * @param[in] target_protocol
2265  *   The next protocol in the previous item.
2266  * @param[out] error
2267  *   Pointer to error structure.
2268  *
2269  * @return
2270  *   0 on success, a negative errno value otherwise and rte_errno is set.
2271  */
2272 int
2273 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2274                               uint64_t item_flags,
2275                               uint8_t target_protocol,
2276                               struct rte_flow_error *error)
2277 {
2278         const struct rte_flow_item_nvgre *mask = item->mask;
2279         int ret;
2280
2281         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2282                 return rte_flow_error_set(error, EINVAL,
2283                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2284                                           "protocol filtering not compatible"
2285                                           " with this GRE layer");
2286         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2287                 return rte_flow_error_set(error, ENOTSUP,
2288                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2289                                           "multiple tunnel layers not"
2290                                           " supported");
2291         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2292                 return rte_flow_error_set(error, ENOTSUP,
2293                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2294                                           "L3 Layer is missing");
2295         if (!mask)
2296                 mask = &rte_flow_item_nvgre_mask;
2297         ret = mlx5_flow_item_acceptable
2298                 (item, (const uint8_t *)mask,
2299                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2300                  sizeof(struct rte_flow_item_nvgre), error);
2301         if (ret < 0)
2302                 return ret;
2303         return 0;
2304 }
2305
2306 /* Allocate unique ID for the split Q/RSS subflows. */
2307 static uint32_t
2308 flow_qrss_get_id(struct rte_eth_dev *dev)
2309 {
2310         struct mlx5_priv *priv = dev->data->dev_private;
2311         uint32_t qrss_id, ret;
2312
2313         ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
2314         if (ret)
2315                 return 0;
2316         assert(qrss_id);
2317         return qrss_id;
2318 }
2319
2320 /* Free unique ID for the split Q/RSS subflows. */
2321 static void
2322 flow_qrss_free_id(struct rte_eth_dev *dev,  uint32_t qrss_id)
2323 {
2324         struct mlx5_priv *priv = dev->data->dev_private;
2325
2326         if (qrss_id)
2327                 mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
2328 }
2329
2330 /**
2331  * Release resource related QUEUE/RSS action split.
2332  *
2333  * @param dev
2334  *   Pointer to Ethernet device.
2335  * @param flow
2336  *   Flow to release id's from.
2337  */
2338 static void
2339 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
2340                              struct rte_flow *flow)
2341 {
2342         struct mlx5_flow *dev_flow;
2343
2344         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
2345                 if (dev_flow->qrss_id)
2346                         flow_qrss_free_id(dev, dev_flow->qrss_id);
2347 }
2348
2349 static int
2350 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
2351                    const struct rte_flow_attr *attr __rte_unused,
2352                    const struct rte_flow_item items[] __rte_unused,
2353                    const struct rte_flow_action actions[] __rte_unused,
2354                    bool external __rte_unused,
2355                    struct rte_flow_error *error)
2356 {
2357         return rte_flow_error_set(error, ENOTSUP,
2358                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2359 }
2360
2361 static struct mlx5_flow *
2362 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
2363                   const struct rte_flow_item items[] __rte_unused,
2364                   const struct rte_flow_action actions[] __rte_unused,
2365                   struct rte_flow_error *error)
2366 {
2367         rte_flow_error_set(error, ENOTSUP,
2368                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2369         return NULL;
2370 }
2371
2372 static int
2373 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
2374                     struct mlx5_flow *dev_flow __rte_unused,
2375                     const struct rte_flow_attr *attr __rte_unused,
2376                     const struct rte_flow_item items[] __rte_unused,
2377                     const struct rte_flow_action actions[] __rte_unused,
2378                     struct rte_flow_error *error)
2379 {
2380         return rte_flow_error_set(error, ENOTSUP,
2381                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2382 }
2383
2384 static int
2385 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
2386                 struct rte_flow *flow __rte_unused,
2387                 struct rte_flow_error *error)
2388 {
2389         return rte_flow_error_set(error, ENOTSUP,
2390                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2391 }
2392
2393 static void
2394 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
2395                  struct rte_flow *flow __rte_unused)
2396 {
2397 }
2398
2399 static void
2400 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
2401                   struct rte_flow *flow __rte_unused)
2402 {
2403 }
2404
2405 static int
2406 flow_null_query(struct rte_eth_dev *dev __rte_unused,
2407                 struct rte_flow *flow __rte_unused,
2408                 const struct rte_flow_action *actions __rte_unused,
2409                 void *data __rte_unused,
2410                 struct rte_flow_error *error)
2411 {
2412         return rte_flow_error_set(error, ENOTSUP,
2413                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2414 }
2415
2416 /* Void driver to protect from null pointer reference. */
2417 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
2418         .validate = flow_null_validate,
2419         .prepare = flow_null_prepare,
2420         .translate = flow_null_translate,
2421         .apply = flow_null_apply,
2422         .remove = flow_null_remove,
2423         .destroy = flow_null_destroy,
2424         .query = flow_null_query,
2425 };
2426
2427 /**
2428  * Select flow driver type according to flow attributes and device
2429  * configuration.
2430  *
2431  * @param[in] dev
2432  *   Pointer to the dev structure.
2433  * @param[in] attr
2434  *   Pointer to the flow attributes.
2435  *
2436  * @return
2437  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
2438  */
2439 static enum mlx5_flow_drv_type
2440 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
2441 {
2442         struct mlx5_priv *priv = dev->data->dev_private;
2443         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
2444
2445         if (attr->transfer && priv->config.dv_esw_en)
2446                 type = MLX5_FLOW_TYPE_DV;
2447         if (!attr->transfer)
2448                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
2449                                                  MLX5_FLOW_TYPE_VERBS;
2450         return type;
2451 }
2452
2453 #define flow_get_drv_ops(type) flow_drv_ops[type]
2454
2455 /**
2456  * Flow driver validation API. This abstracts calling driver specific functions.
2457  * The type of flow driver is determined according to flow attributes.
2458  *
2459  * @param[in] dev
2460  *   Pointer to the dev structure.
2461  * @param[in] attr
2462  *   Pointer to the flow attributes.
2463  * @param[in] items
2464  *   Pointer to the list of items.
2465  * @param[in] actions
2466  *   Pointer to the list of actions.
2467  * @param[in] external
2468  *   This flow rule is created by request external to PMD.
2469  * @param[out] error
2470  *   Pointer to the error structure.
2471  *
2472  * @return
2473  *   0 on success, a negative errno value otherwise and rte_errno is set.
2474  */
2475 static inline int
2476 flow_drv_validate(struct rte_eth_dev *dev,
2477                   const struct rte_flow_attr *attr,
2478                   const struct rte_flow_item items[],
2479                   const struct rte_flow_action actions[],
2480                   bool external, struct rte_flow_error *error)
2481 {
2482         const struct mlx5_flow_driver_ops *fops;
2483         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
2484
2485         fops = flow_get_drv_ops(type);
2486         return fops->validate(dev, attr, items, actions, external, error);
2487 }
2488
2489 /**
2490  * Flow driver preparation API. This abstracts calling driver specific
2491  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2492  * calculates the size of memory required for device flow, allocates the memory,
2493  * initializes the device flow and returns the pointer.
2494  *
2495  * @note
2496  *   This function initializes device flow structure such as dv or verbs in
2497  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2498  *   rest. For example, adding returning device flow to flow->dev_flow list and
2499  *   setting backward reference to the flow should be done out of this function.
2500  *   layers field is not filled either.
2501  *
2502  * @param[in] attr
2503  *   Pointer to the flow attributes.
2504  * @param[in] items
2505  *   Pointer to the list of items.
2506  * @param[in] actions
2507  *   Pointer to the list of actions.
2508  * @param[out] error
2509  *   Pointer to the error structure.
2510  *
2511  * @return
2512  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2513  */
2514 static inline struct mlx5_flow *
2515 flow_drv_prepare(const struct rte_flow *flow,
2516                  const struct rte_flow_attr *attr,
2517                  const struct rte_flow_item items[],
2518                  const struct rte_flow_action actions[],
2519                  struct rte_flow_error *error)
2520 {
2521         const struct mlx5_flow_driver_ops *fops;
2522         enum mlx5_flow_drv_type type = flow->drv_type;
2523
2524         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2525         fops = flow_get_drv_ops(type);
2526         return fops->prepare(attr, items, actions, error);
2527 }
2528
2529 /**
2530  * Flow driver translation API. This abstracts calling driver specific
2531  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2532  * translates a generic flow into a driver flow. flow_drv_prepare() must
2533  * precede.
2534  *
2535  * @note
2536  *   dev_flow->layers could be filled as a result of parsing during translation
2537  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2538  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2539  *   flow->actions could be overwritten even though all the expanded dev_flows
2540  *   have the same actions.
2541  *
2542  * @param[in] dev
2543  *   Pointer to the rte dev structure.
2544  * @param[in, out] dev_flow
2545  *   Pointer to the mlx5 flow.
2546  * @param[in] attr
2547  *   Pointer to the flow attributes.
2548  * @param[in] items
2549  *   Pointer to the list of items.
2550  * @param[in] actions
2551  *   Pointer to the list of actions.
2552  * @param[out] error
2553  *   Pointer to the error structure.
2554  *
2555  * @return
2556  *   0 on success, a negative errno value otherwise and rte_errno is set.
2557  */
2558 static inline int
2559 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2560                    const struct rte_flow_attr *attr,
2561                    const struct rte_flow_item items[],
2562                    const struct rte_flow_action actions[],
2563                    struct rte_flow_error *error)
2564 {
2565         const struct mlx5_flow_driver_ops *fops;
2566         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2567
2568         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2569         fops = flow_get_drv_ops(type);
2570         return fops->translate(dev, dev_flow, attr, items, actions, error);
2571 }
2572
2573 /**
2574  * Flow driver apply API. This abstracts calling driver specific functions.
2575  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2576  * translated driver flows on to device. flow_drv_translate() must precede.
2577  *
2578  * @param[in] dev
2579  *   Pointer to Ethernet device structure.
2580  * @param[in, out] flow
2581  *   Pointer to flow structure.
2582  * @param[out] error
2583  *   Pointer to error structure.
2584  *
2585  * @return
2586  *   0 on success, a negative errno value otherwise and rte_errno is set.
2587  */
2588 static inline int
2589 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2590                struct rte_flow_error *error)
2591 {
2592         const struct mlx5_flow_driver_ops *fops;
2593         enum mlx5_flow_drv_type type = flow->drv_type;
2594
2595         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2596         fops = flow_get_drv_ops(type);
2597         return fops->apply(dev, flow, error);
2598 }
2599
2600 /**
2601  * Flow driver remove API. This abstracts calling driver specific functions.
2602  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2603  * on device. All the resources of the flow should be freed by calling
2604  * flow_drv_destroy().
2605  *
2606  * @param[in] dev
2607  *   Pointer to Ethernet device.
2608  * @param[in, out] flow
2609  *   Pointer to flow structure.
2610  */
2611 static inline void
2612 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2613 {
2614         const struct mlx5_flow_driver_ops *fops;
2615         enum mlx5_flow_drv_type type = flow->drv_type;
2616
2617         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2618         fops = flow_get_drv_ops(type);
2619         fops->remove(dev, flow);
2620 }
2621
2622 /**
2623  * Flow driver destroy API. This abstracts calling driver specific functions.
2624  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2625  * on device and releases resources of the flow.
2626  *
2627  * @param[in] dev
2628  *   Pointer to Ethernet device.
2629  * @param[in, out] flow
2630  *   Pointer to flow structure.
2631  */
2632 static inline void
2633 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2634 {
2635         const struct mlx5_flow_driver_ops *fops;
2636         enum mlx5_flow_drv_type type = flow->drv_type;
2637
2638         flow_mreg_split_qrss_release(dev, flow);
2639         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2640         fops = flow_get_drv_ops(type);
2641         fops->destroy(dev, flow);
2642 }
2643
2644 /**
2645  * Validate a flow supported by the NIC.
2646  *
2647  * @see rte_flow_validate()
2648  * @see rte_flow_ops
2649  */
2650 int
2651 mlx5_flow_validate(struct rte_eth_dev *dev,
2652                    const struct rte_flow_attr *attr,
2653                    const struct rte_flow_item items[],
2654                    const struct rte_flow_action actions[],
2655                    struct rte_flow_error *error)
2656 {
2657         int ret;
2658
2659         ret = flow_drv_validate(dev, attr, items, actions, true, error);
2660         if (ret < 0)
2661                 return ret;
2662         return 0;
2663 }
2664
2665 /**
2666  * Get port id item from the item list.
2667  *
2668  * @param[in] item
2669  *   Pointer to the list of items.
2670  *
2671  * @return
2672  *   Pointer to the port id item if exist, else return NULL.
2673  */
2674 static const struct rte_flow_item *
2675 find_port_id_item(const struct rte_flow_item *item)
2676 {
2677         assert(item);
2678         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2679                 if (item->type == RTE_FLOW_ITEM_TYPE_PORT_ID)
2680                         return item;
2681         }
2682         return NULL;
2683 }
2684
2685 /**
2686  * Get RSS action from the action list.
2687  *
2688  * @param[in] actions
2689  *   Pointer to the list of actions.
2690  *
2691  * @return
2692  *   Pointer to the RSS action if exist, else return NULL.
2693  */
2694 static const struct rte_flow_action_rss*
2695 flow_get_rss_action(const struct rte_flow_action actions[])
2696 {
2697         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2698                 switch (actions->type) {
2699                 case RTE_FLOW_ACTION_TYPE_RSS:
2700                         return (const struct rte_flow_action_rss *)
2701                                actions->conf;
2702                 default:
2703                         break;
2704                 }
2705         }
2706         return NULL;
2707 }
2708
2709 static unsigned int
2710 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2711 {
2712         const struct rte_flow_item *item;
2713         unsigned int has_vlan = 0;
2714
2715         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2716                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2717                         has_vlan = 1;
2718                         break;
2719                 }
2720         }
2721         if (has_vlan)
2722                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2723                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2724         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2725                                MLX5_EXPANSION_ROOT_OUTER;
2726 }
2727
2728 /**
2729  * Get QUEUE/RSS action from the action list.
2730  *
2731  * @param[in] actions
2732  *   Pointer to the list of actions.
2733  * @param[out] qrss
2734  *   Pointer to the return pointer.
2735  * @param[out] qrss_type
2736  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
2737  *   if no QUEUE/RSS is found.
2738  *
2739  * @return
2740  *   Total number of actions.
2741  */
2742 static int
2743 flow_parse_qrss_action(const struct rte_flow_action actions[],
2744                        const struct rte_flow_action **qrss)
2745 {
2746         int actions_n = 0;
2747
2748         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2749                 switch (actions->type) {
2750                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2751                 case RTE_FLOW_ACTION_TYPE_RSS:
2752                         *qrss = actions;
2753                         break;
2754                 default:
2755                         break;
2756                 }
2757                 actions_n++;
2758         }
2759         /* Count RTE_FLOW_ACTION_TYPE_END. */
2760         return actions_n + 1;
2761 }
2762
2763 /**
2764  * Check meter action from the action list.
2765  *
2766  * @param[in] actions
2767  *   Pointer to the list of actions.
2768  * @param[out] mtr
2769  *   Pointer to the meter exist flag.
2770  *
2771  * @return
2772  *   Total number of actions.
2773  */
2774 static int
2775 flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
2776 {
2777         int actions_n = 0;
2778
2779         assert(mtr);
2780         *mtr = 0;
2781         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2782                 switch (actions->type) {
2783                 case RTE_FLOW_ACTION_TYPE_METER:
2784                         *mtr = 1;
2785                         break;
2786                 default:
2787                         break;
2788                 }
2789                 actions_n++;
2790         }
2791         /* Count RTE_FLOW_ACTION_TYPE_END. */
2792         return actions_n + 1;
2793 }
2794
2795 /**
2796  * Check if the flow should be splited due to hairpin.
2797  * The reason for the split is that in current HW we can't
2798  * support encap on Rx, so if a flow have encap we move it
2799  * to Tx.
2800  *
2801  * @param dev
2802  *   Pointer to Ethernet device.
2803  * @param[in] attr
2804  *   Flow rule attributes.
2805  * @param[in] actions
2806  *   Associated actions (list terminated by the END action).
2807  *
2808  * @return
2809  *   > 0 the number of actions and the flow should be split,
2810  *   0 when no split required.
2811  */
2812 static int
2813 flow_check_hairpin_split(struct rte_eth_dev *dev,
2814                          const struct rte_flow_attr *attr,
2815                          const struct rte_flow_action actions[])
2816 {
2817         int queue_action = 0;
2818         int action_n = 0;
2819         int encap = 0;
2820         const struct rte_flow_action_queue *queue;
2821         const struct rte_flow_action_rss *rss;
2822         const struct rte_flow_action_raw_encap *raw_encap;
2823
2824         if (!attr->ingress)
2825                 return 0;
2826         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2827                 switch (actions->type) {
2828                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2829                         queue = actions->conf;
2830                         if (queue == NULL)
2831                                 return 0;
2832                         if (mlx5_rxq_get_type(dev, queue->index) !=
2833                             MLX5_RXQ_TYPE_HAIRPIN)
2834                                 return 0;
2835                         queue_action = 1;
2836                         action_n++;
2837                         break;
2838                 case RTE_FLOW_ACTION_TYPE_RSS:
2839                         rss = actions->conf;
2840                         if (rss == NULL || rss->queue_num == 0)
2841                                 return 0;
2842                         if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
2843                             MLX5_RXQ_TYPE_HAIRPIN)
2844                                 return 0;
2845                         queue_action = 1;
2846                         action_n++;
2847                         break;
2848                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2849                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2850                         encap = 1;
2851                         action_n++;
2852                         break;
2853                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2854                         raw_encap = actions->conf;
2855                         if (raw_encap->size >
2856                             (sizeof(struct rte_flow_item_eth) +
2857                              sizeof(struct rte_flow_item_ipv4)))
2858                                 encap = 1;
2859                         action_n++;
2860                         break;
2861                 default:
2862                         action_n++;
2863                         break;
2864                 }
2865         }
2866         if (encap == 1 && queue_action)
2867                 return action_n;
2868         return 0;
2869 }
2870
2871 /* Declare flow create/destroy prototype in advance. */
2872 static struct rte_flow *
2873 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2874                  const struct rte_flow_attr *attr,
2875                  const struct rte_flow_item items[],
2876                  const struct rte_flow_action actions[],
2877                  bool external, struct rte_flow_error *error);
2878
2879 static void
2880 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2881                   struct rte_flow *flow);
2882
2883 /**
2884  * Add a flow of copying flow metadata registers in RX_CP_TBL.
2885  *
2886  * As mark_id is unique, if there's already a registered flow for the mark_id,
2887  * return by increasing the reference counter of the resource. Otherwise, create
2888  * the resource (mcp_res) and flow.
2889  *
2890  * Flow looks like,
2891  *   - If ingress port is ANY and reg_c[1] is mark_id,
2892  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
2893  *
2894  * For default flow (zero mark_id), flow is like,
2895  *   - If ingress port is ANY,
2896  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
2897  *
2898  * @param dev
2899  *   Pointer to Ethernet device.
2900  * @param mark_id
2901  *   ID of MARK action, zero means default flow for META.
2902  * @param[out] error
2903  *   Perform verbose error reporting if not NULL.
2904  *
2905  * @return
2906  *   Associated resource on success, NULL otherwise and rte_errno is set.
2907  */
2908 static struct mlx5_flow_mreg_copy_resource *
2909 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
2910                           struct rte_flow_error *error)
2911 {
2912         struct mlx5_priv *priv = dev->data->dev_private;
2913         struct rte_flow_attr attr = {
2914                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
2915                 .ingress = 1,
2916         };
2917         struct mlx5_rte_flow_item_tag tag_spec = {
2918                 .data = mark_id,
2919         };
2920         struct rte_flow_item items[] = {
2921                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
2922         };
2923         struct rte_flow_action_mark ftag = {
2924                 .id = mark_id,
2925         };
2926         struct mlx5_flow_action_copy_mreg cp_mreg = {
2927                 .dst = REG_B,
2928                 .src = 0,
2929         };
2930         struct rte_flow_action_jump jump = {
2931                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
2932         };
2933         struct rte_flow_action actions[] = {
2934                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
2935         };
2936         struct mlx5_flow_mreg_copy_resource *mcp_res;
2937         int ret;
2938
2939         /* Fill the register fileds in the flow. */
2940         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
2941         if (ret < 0)
2942                 return NULL;
2943         tag_spec.id = ret;
2944         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
2945         if (ret < 0)
2946                 return NULL;
2947         cp_mreg.src = ret;
2948         /* Check if already registered. */
2949         assert(priv->mreg_cp_tbl);
2950         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
2951         if (mcp_res) {
2952                 /* For non-default rule. */
2953                 if (mark_id != MLX5_DEFAULT_COPY_ID)
2954                         mcp_res->refcnt++;
2955                 assert(mark_id != MLX5_DEFAULT_COPY_ID || mcp_res->refcnt == 1);
2956                 return mcp_res;
2957         }
2958         /* Provide the full width of FLAG specific value. */
2959         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
2960                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
2961         /* Build a new flow. */
2962         if (mark_id != MLX5_DEFAULT_COPY_ID) {
2963                 items[0] = (struct rte_flow_item){
2964                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
2965                         .spec = &tag_spec,
2966                 };
2967                 items[1] = (struct rte_flow_item){
2968                         .type = RTE_FLOW_ITEM_TYPE_END,
2969                 };
2970                 actions[0] = (struct rte_flow_action){
2971                         .type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
2972                         .conf = &ftag,
2973                 };
2974                 actions[1] = (struct rte_flow_action){
2975                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
2976                         .conf = &cp_mreg,
2977                 };
2978                 actions[2] = (struct rte_flow_action){
2979                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
2980                         .conf = &jump,
2981                 };
2982                 actions[3] = (struct rte_flow_action){
2983                         .type = RTE_FLOW_ACTION_TYPE_END,
2984                 };
2985         } else {
2986                 /* Default rule, wildcard match. */
2987                 attr.priority = MLX5_FLOW_PRIO_RSVD;
2988                 items[0] = (struct rte_flow_item){
2989                         .type = RTE_FLOW_ITEM_TYPE_END,
2990                 };
2991                 actions[0] = (struct rte_flow_action){
2992                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
2993                         .conf = &cp_mreg,
2994                 };
2995                 actions[1] = (struct rte_flow_action){
2996                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
2997                         .conf = &jump,
2998                 };
2999                 actions[2] = (struct rte_flow_action){
3000                         .type = RTE_FLOW_ACTION_TYPE_END,
3001                 };
3002         }
3003         /* Build a new entry. */
3004         mcp_res = rte_zmalloc(__func__, sizeof(*mcp_res), 0);
3005         if (!mcp_res) {
3006                 rte_errno = ENOMEM;
3007                 return NULL;
3008         }
3009         /*
3010          * The copy Flows are not included in any list. There
3011          * ones are referenced from other Flows and can not
3012          * be applied, removed, deleted in ardbitrary order
3013          * by list traversing.
3014          */
3015         mcp_res->flow = flow_list_create(dev, NULL, &attr, items,
3016                                          actions, false, error);
3017         if (!mcp_res->flow)
3018                 goto error;
3019         mcp_res->refcnt++;
3020         mcp_res->hlist_ent.key = mark_id;
3021         ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
3022                                 &mcp_res->hlist_ent);
3023         assert(!ret);
3024         if (ret)
3025                 goto error;
3026         return mcp_res;
3027 error:
3028         if (mcp_res->flow)
3029                 flow_list_destroy(dev, NULL, mcp_res->flow);
3030         rte_free(mcp_res);
3031         return NULL;
3032 }
3033
3034 /**
3035  * Release flow in RX_CP_TBL.
3036  *
3037  * @param dev
3038  *   Pointer to Ethernet device.
3039  * @flow
3040  *   Parent flow for wich copying is provided.
3041  */
3042 static void
3043 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
3044                           struct rte_flow *flow)
3045 {
3046         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3047         struct mlx5_priv *priv = dev->data->dev_private;
3048
3049         if (!mcp_res || !priv->mreg_cp_tbl)
3050                 return;
3051         if (flow->copy_applied) {
3052                 assert(mcp_res->appcnt);
3053                 flow->copy_applied = 0;
3054                 --mcp_res->appcnt;
3055                 if (!mcp_res->appcnt)
3056                         flow_drv_remove(dev, mcp_res->flow);
3057         }
3058         /*
3059          * We do not check availability of metadata registers here,
3060          * because copy resources are not allocated in this case.
3061          */
3062         if (--mcp_res->refcnt)
3063                 return;
3064         assert(mcp_res->flow);
3065         flow_list_destroy(dev, NULL, mcp_res->flow);
3066         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3067         rte_free(mcp_res);
3068         flow->mreg_copy = NULL;
3069 }
3070
3071 /**
3072  * Start flow in RX_CP_TBL.
3073  *
3074  * @param dev
3075  *   Pointer to Ethernet device.
3076  * @flow
3077  *   Parent flow for wich copying is provided.
3078  *
3079  * @return
3080  *   0 on success, a negative errno value otherwise and rte_errno is set.
3081  */
3082 static int
3083 flow_mreg_start_copy_action(struct rte_eth_dev *dev,
3084                             struct rte_flow *flow)
3085 {
3086         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3087         int ret;
3088
3089         if (!mcp_res || flow->copy_applied)
3090                 return 0;
3091         if (!mcp_res->appcnt) {
3092                 ret = flow_drv_apply(dev, mcp_res->flow, NULL);
3093                 if (ret)
3094                         return ret;
3095         }
3096         ++mcp_res->appcnt;
3097         flow->copy_applied = 1;
3098         return 0;
3099 }
3100
3101 /**
3102  * Stop flow in RX_CP_TBL.
3103  *
3104  * @param dev
3105  *   Pointer to Ethernet device.
3106  * @flow
3107  *   Parent flow for wich copying is provided.
3108  */
3109 static void
3110 flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
3111                            struct rte_flow *flow)
3112 {
3113         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3114
3115         if (!mcp_res || !flow->copy_applied)
3116                 return;
3117         assert(mcp_res->appcnt);
3118         --mcp_res->appcnt;
3119         flow->copy_applied = 0;
3120         if (!mcp_res->appcnt)
3121                 flow_drv_remove(dev, mcp_res->flow);
3122 }
3123
3124 /**
3125  * Remove the default copy action from RX_CP_TBL.
3126  *
3127  * @param dev
3128  *   Pointer to Ethernet device.
3129  */
3130 static void
3131 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
3132 {
3133         struct mlx5_flow_mreg_copy_resource *mcp_res;
3134         struct mlx5_priv *priv = dev->data->dev_private;
3135
3136         /* Check if default flow is registered. */
3137         if (!priv->mreg_cp_tbl)
3138                 return;
3139         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
3140                                             MLX5_DEFAULT_COPY_ID);
3141         if (!mcp_res)
3142                 return;
3143         assert(mcp_res->flow);
3144         flow_list_destroy(dev, NULL, mcp_res->flow);
3145         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3146         rte_free(mcp_res);
3147 }
3148
3149 /**
3150  * Add the default copy action in in RX_CP_TBL.
3151  *
3152  * @param dev
3153  *   Pointer to Ethernet device.
3154  * @param[out] error
3155  *   Perform verbose error reporting if not NULL.
3156  *
3157  * @return
3158  *   0 for success, negative value otherwise and rte_errno is set.
3159  */
3160 static int
3161 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
3162                                   struct rte_flow_error *error)
3163 {
3164         struct mlx5_priv *priv = dev->data->dev_private;
3165         struct mlx5_flow_mreg_copy_resource *mcp_res;
3166
3167         /* Check whether extensive metadata feature is engaged. */
3168         if (!priv->config.dv_flow_en ||
3169             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3170             !mlx5_flow_ext_mreg_supported(dev) ||
3171             !priv->sh->dv_regc0_mask)
3172                 return 0;
3173         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
3174         if (!mcp_res)
3175                 return -rte_errno;
3176         return 0;
3177 }
3178
3179 /**
3180  * Add a flow of copying flow metadata registers in RX_CP_TBL.
3181  *
3182  * All the flow having Q/RSS action should be split by
3183  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
3184  * performs the following,
3185  *   - CQE->flow_tag := reg_c[1] (MARK)
3186  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3187  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
3188  * but there should be a flow per each MARK ID set by MARK action.
3189  *
3190  * For the aforementioned reason, if there's a MARK action in flow's action
3191  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
3192  * the MARK ID to CQE's flow_tag like,
3193  *   - If reg_c[1] is mark_id,
3194  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3195  *
3196  * For SET_META action which stores value in reg_c[0], as the destination is
3197  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
3198  * MARK ID means the default flow. The default flow looks like,
3199  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3200  *
3201  * @param dev
3202  *   Pointer to Ethernet device.
3203  * @param flow
3204  *   Pointer to flow structure.
3205  * @param[in] actions
3206  *   Pointer to the list of actions.
3207  * @param[out] error
3208  *   Perform verbose error reporting if not NULL.
3209  *
3210  * @return
3211  *   0 on success, negative value otherwise and rte_errno is set.
3212  */
3213 static int
3214 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
3215                             struct rte_flow *flow,
3216                             const struct rte_flow_action *actions,
3217                             struct rte_flow_error *error)
3218 {
3219         struct mlx5_priv *priv = dev->data->dev_private;
3220         struct mlx5_dev_config *config = &priv->config;
3221         struct mlx5_flow_mreg_copy_resource *mcp_res;
3222         const struct rte_flow_action_mark *mark;
3223
3224         /* Check whether extensive metadata feature is engaged. */
3225         if (!config->dv_flow_en ||
3226             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3227             !mlx5_flow_ext_mreg_supported(dev) ||
3228             !priv->sh->dv_regc0_mask)
3229                 return 0;
3230         /* Find MARK action. */
3231         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3232                 switch (actions->type) {
3233                 case RTE_FLOW_ACTION_TYPE_FLAG:
3234                         mcp_res = flow_mreg_add_copy_action
3235                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
3236                         if (!mcp_res)
3237                                 return -rte_errno;
3238                         flow->mreg_copy = mcp_res;
3239                         if (dev->data->dev_started) {
3240                                 mcp_res->appcnt++;
3241                                 flow->copy_applied = 1;
3242                         }
3243                         return 0;
3244                 case RTE_FLOW_ACTION_TYPE_MARK:
3245                         mark = (const struct rte_flow_action_mark *)
3246                                 actions->conf;
3247                         mcp_res =
3248                                 flow_mreg_add_copy_action(dev, mark->id, error);
3249                         if (!mcp_res)
3250                                 return -rte_errno;
3251                         flow->mreg_copy = mcp_res;
3252                         if (dev->data->dev_started) {
3253                                 mcp_res->appcnt++;
3254                                 flow->copy_applied = 1;
3255                         }
3256                         return 0;
3257                 default:
3258                         break;
3259                 }
3260         }
3261         return 0;
3262 }
3263
3264 #define MLX5_MAX_SPLIT_ACTIONS 24
3265 #define MLX5_MAX_SPLIT_ITEMS 24
3266
3267 /**
3268  * Split the hairpin flow.
3269  * Since HW can't support encap on Rx we move the encap to Tx.
3270  * If the count action is after the encap then we also
3271  * move the count action. in this case the count will also measure
3272  * the outer bytes.
3273  *
3274  * @param dev
3275  *   Pointer to Ethernet device.
3276  * @param[in] actions
3277  *   Associated actions (list terminated by the END action).
3278  * @param[out] actions_rx
3279  *   Rx flow actions.
3280  * @param[out] actions_tx
3281  *   Tx flow actions..
3282  * @param[out] pattern_tx
3283  *   The pattern items for the Tx flow.
3284  * @param[out] flow_id
3285  *   The flow ID connected to this flow.
3286  *
3287  * @return
3288  *   0 on success.
3289  */
3290 static int
3291 flow_hairpin_split(struct rte_eth_dev *dev,
3292                    const struct rte_flow_action actions[],
3293                    struct rte_flow_action actions_rx[],
3294                    struct rte_flow_action actions_tx[],
3295                    struct rte_flow_item pattern_tx[],
3296                    uint32_t *flow_id)
3297 {
3298         struct mlx5_priv *priv = dev->data->dev_private;
3299         const struct rte_flow_action_raw_encap *raw_encap;
3300         const struct rte_flow_action_raw_decap *raw_decap;
3301         struct mlx5_rte_flow_action_set_tag *set_tag;
3302         struct rte_flow_action *tag_action;
3303         struct mlx5_rte_flow_item_tag *tag_item;
3304         struct rte_flow_item *item;
3305         char *addr;
3306         int encap = 0;
3307
3308         mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
3309         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3310                 switch (actions->type) {
3311                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3312                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3313                         rte_memcpy(actions_tx, actions,
3314                                sizeof(struct rte_flow_action));
3315                         actions_tx++;
3316                         break;
3317                 case RTE_FLOW_ACTION_TYPE_COUNT:
3318                         if (encap) {
3319                                 rte_memcpy(actions_tx, actions,
3320                                            sizeof(struct rte_flow_action));
3321                                 actions_tx++;
3322                         } else {
3323                                 rte_memcpy(actions_rx, actions,
3324                                            sizeof(struct rte_flow_action));
3325                                 actions_rx++;
3326                         }
3327                         break;
3328                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3329                         raw_encap = actions->conf;
3330                         if (raw_encap->size >
3331                             (sizeof(struct rte_flow_item_eth) +
3332                              sizeof(struct rte_flow_item_ipv4))) {
3333                                 memcpy(actions_tx, actions,
3334                                        sizeof(struct rte_flow_action));
3335                                 actions_tx++;
3336                                 encap = 1;
3337                         } else {
3338                                 rte_memcpy(actions_rx, actions,
3339                                            sizeof(struct rte_flow_action));
3340                                 actions_rx++;
3341                         }
3342                         break;
3343                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3344                         raw_decap = actions->conf;
3345                         if (raw_decap->size <
3346                             (sizeof(struct rte_flow_item_eth) +
3347                              sizeof(struct rte_flow_item_ipv4))) {
3348                                 memcpy(actions_tx, actions,
3349                                        sizeof(struct rte_flow_action));
3350                                 actions_tx++;
3351                         } else {
3352                                 rte_memcpy(actions_rx, actions,
3353                                            sizeof(struct rte_flow_action));
3354                                 actions_rx++;
3355                         }
3356                         break;
3357                 default:
3358                         rte_memcpy(actions_rx, actions,
3359                                    sizeof(struct rte_flow_action));
3360                         actions_rx++;
3361                         break;
3362                 }
3363         }
3364         /* Add set meta action and end action for the Rx flow. */
3365         tag_action = actions_rx;
3366         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3367         actions_rx++;
3368         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
3369         actions_rx++;
3370         set_tag = (void *)actions_rx;
3371         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
3372         assert(set_tag->id > REG_NONE);
3373         set_tag->data = *flow_id;
3374         tag_action->conf = set_tag;
3375         /* Create Tx item list. */
3376         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
3377         addr = (void *)&pattern_tx[2];
3378         item = pattern_tx;
3379         item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3380         tag_item = (void *)addr;
3381         tag_item->data = *flow_id;
3382         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
3383         assert(set_tag->id > REG_NONE);
3384         item->spec = tag_item;
3385         addr += sizeof(struct mlx5_rte_flow_item_tag);
3386         tag_item = (void *)addr;
3387         tag_item->data = UINT32_MAX;
3388         tag_item->id = UINT16_MAX;
3389         item->mask = tag_item;
3390         addr += sizeof(struct mlx5_rte_flow_item_tag);
3391         item->last = NULL;
3392         item++;
3393         item->type = RTE_FLOW_ITEM_TYPE_END;
3394         return 0;
3395 }
3396
3397 /**
3398  * The last stage of splitting chain, just creates the subflow
3399  * without any modification.
3400  *
3401  * @param dev
3402  *   Pointer to Ethernet device.
3403  * @param[in] flow
3404  *   Parent flow structure pointer.
3405  * @param[in, out] sub_flow
3406  *   Pointer to return the created subflow, may be NULL.
3407  * @param[in] attr
3408  *   Flow rule attributes.
3409  * @param[in] items
3410  *   Pattern specification (list terminated by the END pattern item).
3411  * @param[in] actions
3412  *   Associated actions (list terminated by the END action).
3413  * @param[in] external
3414  *   This flow rule is created by request external to PMD.
3415  * @param[out] error
3416  *   Perform verbose error reporting if not NULL.
3417  * @return
3418  *   0 on success, negative value otherwise
3419  */
3420 static int
3421 flow_create_split_inner(struct rte_eth_dev *dev,
3422                         struct rte_flow *flow,
3423                         struct mlx5_flow **sub_flow,
3424                         const struct rte_flow_attr *attr,
3425                         const struct rte_flow_item items[],
3426                         const struct rte_flow_action actions[],
3427                         bool external, struct rte_flow_error *error)
3428 {
3429         struct mlx5_flow *dev_flow;
3430
3431         dev_flow = flow_drv_prepare(flow, attr, items, actions, error);
3432         if (!dev_flow)
3433                 return -rte_errno;
3434         dev_flow->flow = flow;
3435         dev_flow->external = external;
3436         /* Subflow object was created, we must include one in the list. */
3437         LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
3438         if (sub_flow)
3439                 *sub_flow = dev_flow;
3440         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
3441 }
3442
3443 /**
3444  * Split the meter flow.
3445  *
3446  * As meter flow will split to three sub flow, other than meter
3447  * action, the other actions make sense to only meter accepts
3448  * the packet. If it need to be dropped, no other additional
3449  * actions should be take.
3450  *
3451  * One kind of special action which decapsulates the L3 tunnel
3452  * header will be in the prefix sub flow, as not to take the
3453  * L3 tunnel header into account.
3454  *
3455  * @param dev
3456  *   Pointer to Ethernet device.
3457  * @param[in] actions
3458  *   Associated actions (list terminated by the END action).
3459  * @param[out] actions_sfx
3460  *   Suffix flow actions.
3461  * @param[out] actions_pre
3462  *   Prefix flow actions.
3463  * @param[out] pattern_sfx
3464  *   The pattern items for the suffix flow.
3465  * @param[out] tag_sfx
3466  *   Pointer to suffix flow tag.
3467  *
3468  * @return
3469  *   0 on success.
3470  */
3471 static int
3472 flow_meter_split_prep(struct rte_eth_dev *dev,
3473                  const struct rte_flow_action actions[],
3474                  struct rte_flow_action actions_sfx[],
3475                  struct rte_flow_action actions_pre[])
3476 {
3477         struct rte_flow_action *tag_action;
3478         struct mlx5_rte_flow_action_set_tag *set_tag;
3479         struct rte_flow_error error;
3480         const struct rte_flow_action_raw_encap *raw_encap;
3481         const struct rte_flow_action_raw_decap *raw_decap;
3482         uint32_t tag_id;
3483
3484         /* Add the extra tag action first. */
3485         tag_action = actions_pre;
3486         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3487         actions_pre++;
3488         /* Prepare the actions for prefix and suffix flow. */
3489         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3490                 switch (actions->type) {
3491                 case RTE_FLOW_ACTION_TYPE_METER:
3492                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3493                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3494                         memcpy(actions_pre, actions,
3495                                sizeof(struct rte_flow_action));
3496                         actions_pre++;
3497                         break;
3498                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3499                         raw_encap = actions->conf;
3500                         if (raw_encap->size >
3501                             (sizeof(struct rte_flow_item_eth) +
3502                              sizeof(struct rte_flow_item_ipv4))) {
3503                                 memcpy(actions_sfx, actions,
3504                                        sizeof(struct rte_flow_action));
3505                                 actions_sfx++;
3506                         } else {
3507                                 rte_memcpy(actions_pre, actions,
3508                                            sizeof(struct rte_flow_action));
3509                                 actions_pre++;
3510                         }
3511                         break;
3512                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3513                         raw_decap = actions->conf;
3514                         /* Size 0 decap means 50 bytes as vxlan decap. */
3515                         if (raw_decap->size && (raw_decap->size <
3516                             (sizeof(struct rte_flow_item_eth) +
3517                              sizeof(struct rte_flow_item_ipv4)))) {
3518                                 memcpy(actions_sfx, actions,
3519                                        sizeof(struct rte_flow_action));
3520                                 actions_sfx++;
3521                         } else {
3522                                 rte_memcpy(actions_pre, actions,
3523                                            sizeof(struct rte_flow_action));
3524                                 actions_pre++;
3525                         }
3526                         break;
3527                 default:
3528                         memcpy(actions_sfx, actions,
3529                                 sizeof(struct rte_flow_action));
3530                         actions_sfx++;
3531                         break;
3532                 }
3533         }
3534         /* Add end action to the actions. */
3535         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
3536         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
3537         actions_pre++;
3538         /* Set the tag. */
3539         set_tag = (void *)actions_pre;
3540         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3541         /*
3542          * Get the id from the qrss_pool to make qrss share the id with meter.
3543          */
3544         tag_id = flow_qrss_get_id(dev);
3545         set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
3546         tag_action->conf = set_tag;
3547         return tag_id;
3548 }
3549
3550 /**
3551  * Split action list having QUEUE/RSS for metadata register copy.
3552  *
3553  * Once Q/RSS action is detected in user's action list, the flow action
3554  * should be split in order to copy metadata registers, which will happen in
3555  * RX_CP_TBL like,
3556  *   - CQE->flow_tag := reg_c[1] (MARK)
3557  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3558  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
3559  * This is because the last action of each flow must be a terminal action
3560  * (QUEUE, RSS or DROP).
3561  *
3562  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
3563  * stored and kept in the mlx5_flow structure per each sub_flow.
3564  *
3565  * The Q/RSS action is replaced with,
3566  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
3567  * And the following JUMP action is added at the end,
3568  *   - JUMP, to RX_CP_TBL.
3569  *
3570  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
3571  * flow_create_split_metadata() routine. The flow will look like,
3572  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
3573  *
3574  * @param dev
3575  *   Pointer to Ethernet device.
3576  * @param[out] split_actions
3577  *   Pointer to store split actions to jump to CP_TBL.
3578  * @param[in] actions
3579  *   Pointer to the list of original flow actions.
3580  * @param[in] qrss
3581  *   Pointer to the Q/RSS action.
3582  * @param[in] actions_n
3583  *   Number of original actions.
3584  * @param[out] error
3585  *   Perform verbose error reporting if not NULL.
3586  *
3587  * @return
3588  *   non-zero unique flow_id on success, otherwise 0 and
3589  *   error/rte_error are set.
3590  */
3591 static uint32_t
3592 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
3593                           struct rte_flow_action *split_actions,
3594                           const struct rte_flow_action *actions,
3595                           const struct rte_flow_action *qrss,
3596                           int actions_n, struct rte_flow_error *error)
3597 {
3598         struct mlx5_rte_flow_action_set_tag *set_tag;
3599         struct rte_flow_action_jump *jump;
3600         const int qrss_idx = qrss - actions;
3601         uint32_t flow_id = 0;
3602         int ret = 0;
3603
3604         /*
3605          * Given actions will be split
3606          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
3607          * - Add jump to mreg CP_TBL.
3608          * As a result, there will be one more action.
3609          */
3610         ++actions_n;
3611         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
3612         set_tag = (void *)(split_actions + actions_n);
3613         /*
3614          * If tag action is not set to void(it means we are not the meter
3615          * suffix flow), add the tag action. Since meter suffix flow already
3616          * has the tag added.
3617          */
3618         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
3619                 /*
3620                  * Allocate the new subflow ID. This one is unique within
3621                  * device and not shared with representors. Otherwise,
3622                  * we would have to resolve multi-thread access synch
3623                  * issue. Each flow on the shared device is appended
3624                  * with source vport identifier, so the resulting
3625                  * flows will be unique in the shared (by master and
3626                  * representors) domain even if they have coinciding
3627                  * IDs.
3628                  */
3629                 flow_id = flow_qrss_get_id(dev);
3630                 if (!flow_id)
3631                         return rte_flow_error_set(error, ENOMEM,
3632                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3633                                                   NULL, "can't allocate id "
3634                                                   "for split Q/RSS subflow");
3635                 /* Internal SET_TAG action to set flow ID. */
3636                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
3637                         .data = flow_id,
3638                 };
3639                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
3640                 if (ret < 0)
3641                         return ret;
3642                 set_tag->id = ret;
3643                 /* Construct new actions array. */
3644                 /* Replace QUEUE/RSS action. */
3645                 split_actions[qrss_idx] = (struct rte_flow_action){
3646                         .type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
3647                         .conf = set_tag,
3648                 };
3649         }
3650         /* JUMP action to jump to mreg copy table (CP_TBL). */
3651         jump = (void *)(set_tag + 1);
3652         *jump = (struct rte_flow_action_jump){
3653                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
3654         };
3655         split_actions[actions_n - 2] = (struct rte_flow_action){
3656                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
3657                 .conf = jump,
3658         };
3659         split_actions[actions_n - 1] = (struct rte_flow_action){
3660                 .type = RTE_FLOW_ACTION_TYPE_END,
3661         };
3662         return flow_id;
3663 }
3664
3665 /**
3666  * Extend the given action list for Tx metadata copy.
3667  *
3668  * Copy the given action list to the ext_actions and add flow metadata register
3669  * copy action in order to copy reg_a set by WQE to reg_c[0].
3670  *
3671  * @param[out] ext_actions
3672  *   Pointer to the extended action list.
3673  * @param[in] actions
3674  *   Pointer to the list of actions.
3675  * @param[in] actions_n
3676  *   Number of actions in the list.
3677  * @param[out] error
3678  *   Perform verbose error reporting if not NULL.
3679  *
3680  * @return
3681  *   0 on success, negative value otherwise
3682  */
3683 static int
3684 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
3685                        struct rte_flow_action *ext_actions,
3686                        const struct rte_flow_action *actions,
3687                        int actions_n, struct rte_flow_error *error)
3688 {
3689         struct mlx5_flow_action_copy_mreg *cp_mreg =
3690                 (struct mlx5_flow_action_copy_mreg *)
3691                         (ext_actions + actions_n + 1);
3692         int ret;
3693
3694         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
3695         if (ret < 0)
3696                 return ret;
3697         cp_mreg->dst = ret;
3698         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
3699         if (ret < 0)
3700                 return ret;
3701         cp_mreg->src = ret;
3702         memcpy(ext_actions, actions,
3703                         sizeof(*ext_actions) * actions_n);
3704         ext_actions[actions_n - 1] = (struct rte_flow_action){
3705                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3706                 .conf = cp_mreg,
3707         };
3708         ext_actions[actions_n] = (struct rte_flow_action){
3709                 .type = RTE_FLOW_ACTION_TYPE_END,
3710         };
3711         return 0;
3712 }
3713
3714 /**
3715  * The splitting for metadata feature.
3716  *
3717  * - Q/RSS action on NIC Rx should be split in order to pass by
3718  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
3719  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
3720  *
3721  * - All the actions on NIC Tx should have a mreg copy action to
3722  *   copy reg_a from WQE to reg_c[0].
3723  *
3724  * @param dev
3725  *   Pointer to Ethernet device.
3726  * @param[in] flow
3727  *   Parent flow structure pointer.
3728  * @param[in] attr
3729  *   Flow rule attributes.
3730  * @param[in] items
3731  *   Pattern specification (list terminated by the END pattern item).
3732  * @param[in] actions
3733  *   Associated actions (list terminated by the END action).
3734  * @param[in] external
3735  *   This flow rule is created by request external to PMD.
3736  * @param[out] error
3737  *   Perform verbose error reporting if not NULL.
3738  * @return
3739  *   0 on success, negative value otherwise
3740  */
3741 static int
3742 flow_create_split_metadata(struct rte_eth_dev *dev,
3743                            struct rte_flow *flow,
3744                            const struct rte_flow_attr *attr,
3745                            const struct rte_flow_item items[],
3746                            const struct rte_flow_action actions[],
3747                            bool external, struct rte_flow_error *error)
3748 {
3749         struct mlx5_priv *priv = dev->data->dev_private;
3750         struct mlx5_dev_config *config = &priv->config;
3751         const struct rte_flow_action *qrss = NULL;
3752         struct rte_flow_action *ext_actions = NULL;
3753         struct mlx5_flow *dev_flow = NULL;
3754         uint32_t qrss_id = 0;
3755         int mtr_sfx = 0;
3756         size_t act_size;
3757         int actions_n;
3758         int ret;
3759
3760         /* Check whether extensive metadata feature is engaged. */
3761         if (!config->dv_flow_en ||
3762             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3763             !mlx5_flow_ext_mreg_supported(dev))
3764                 return flow_create_split_inner(dev, flow, NULL, attr, items,
3765                                                actions, external, error);
3766         actions_n = flow_parse_qrss_action(actions, &qrss);
3767         if (qrss) {
3768                 /* Exclude hairpin flows from splitting. */
3769                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
3770                         const struct rte_flow_action_queue *queue;
3771
3772                         queue = qrss->conf;
3773                         if (mlx5_rxq_get_type(dev, queue->index) ==
3774                             MLX5_RXQ_TYPE_HAIRPIN)
3775                                 qrss = NULL;
3776                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
3777                         const struct rte_flow_action_rss *rss;
3778
3779                         rss = qrss->conf;
3780                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
3781                             MLX5_RXQ_TYPE_HAIRPIN)
3782                                 qrss = NULL;
3783                 }
3784         }
3785         if (qrss) {
3786                 /* Check if it is in meter suffix table. */
3787                 mtr_sfx = attr->group == (attr->transfer ?
3788                           (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
3789                           MLX5_FLOW_TABLE_LEVEL_SUFFIX);
3790                 /*
3791                  * Q/RSS action on NIC Rx should be split in order to pass by
3792                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
3793                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
3794                  */
3795                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3796                            sizeof(struct rte_flow_action_set_tag) +
3797                            sizeof(struct rte_flow_action_jump);
3798                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3799                 if (!ext_actions)
3800                         return rte_flow_error_set(error, ENOMEM,
3801                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3802                                                   NULL, "no memory to split "
3803                                                   "metadata flow");
3804                 /*
3805                  * If we are the suffix flow of meter, tag already exist.
3806                  * Set the tag action to void.
3807                  */
3808                 if (mtr_sfx)
3809                         ext_actions[qrss - actions].type =
3810                                                 RTE_FLOW_ACTION_TYPE_VOID;
3811                 else
3812                         ext_actions[qrss - actions].type =
3813                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3814                 /*
3815                  * Create the new actions list with removed Q/RSS action
3816                  * and appended set tag and jump to register copy table
3817                  * (RX_CP_TBL). We should preallocate unique tag ID here
3818                  * in advance, because it is needed for set tag action.
3819                  */
3820                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
3821                                                     qrss, actions_n, error);
3822                 if (!mtr_sfx && !qrss_id) {
3823                         ret = -rte_errno;
3824                         goto exit;
3825                 }
3826         } else if (attr->egress && !attr->transfer) {
3827                 /*
3828                  * All the actions on NIC Tx should have a metadata register
3829                  * copy action to copy reg_a from WQE to reg_c[meta]
3830                  */
3831                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3832                            sizeof(struct mlx5_flow_action_copy_mreg);
3833                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3834                 if (!ext_actions)
3835                         return rte_flow_error_set(error, ENOMEM,
3836                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3837                                                   NULL, "no memory to split "
3838                                                   "metadata flow");
3839                 /* Create the action list appended with copy register. */
3840                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
3841                                              actions_n, error);
3842                 if (ret < 0)
3843                         goto exit;
3844         }
3845         /* Add the unmodified original or prefix subflow. */
3846         ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
3847                                       ext_actions ? ext_actions : actions,
3848                                       external, error);
3849         if (ret < 0)
3850                 goto exit;
3851         assert(dev_flow);
3852         if (qrss) {
3853                 const struct rte_flow_attr q_attr = {
3854                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
3855                         .ingress = 1,
3856                 };
3857                 /* Internal PMD action to set register. */
3858                 struct mlx5_rte_flow_item_tag q_tag_spec = {
3859                         .data = qrss_id,
3860                         .id = 0,
3861                 };
3862                 struct rte_flow_item q_items[] = {
3863                         {
3864                                 .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3865                                 .spec = &q_tag_spec,
3866                                 .last = NULL,
3867                                 .mask = NULL,
3868                         },
3869                         {
3870                                 .type = RTE_FLOW_ITEM_TYPE_END,
3871                         },
3872                 };
3873                 struct rte_flow_action q_actions[] = {
3874                         {
3875                                 .type = qrss->type,
3876                                 .conf = qrss->conf,
3877                         },
3878                         {
3879                                 .type = RTE_FLOW_ACTION_TYPE_END,
3880                         },
3881                 };
3882                 uint64_t hash_fields = dev_flow->hash_fields;
3883
3884                 /*
3885                  * Configure the tag item only if there is no meter subflow.
3886                  * Since tag is already marked in the meter suffix subflow
3887                  * we can just use the meter suffix items as is.
3888                  */
3889                 if (qrss_id) {
3890                         /* Not meter subflow. */
3891                         assert(!mtr_sfx);
3892                         /*
3893                          * Put unique id in prefix flow due to it is destroyed
3894                          * after suffix flow and id will be freed after there
3895                          * is no actual flows with this id and identifier
3896                          * reallocation becomes possible (for example, for
3897                          * other flows in other threads).
3898                          */
3899                         dev_flow->qrss_id = qrss_id;
3900                         qrss_id = 0;
3901                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
3902                                                    error);
3903                         if (ret < 0)
3904                                 goto exit;
3905                         q_tag_spec.id = ret;
3906                 }
3907                 dev_flow = NULL;
3908                 /* Add suffix subflow to execute Q/RSS. */
3909                 ret = flow_create_split_inner(dev, flow, &dev_flow,
3910                                               &q_attr, mtr_sfx ? items :
3911                                               q_items, q_actions,
3912                                               external, error);
3913                 if (ret < 0)
3914                         goto exit;
3915                 assert(dev_flow);
3916                 dev_flow->hash_fields = hash_fields;
3917         }
3918
3919 exit:
3920         /*
3921          * We do not destroy the partially created sub_flows in case of error.
3922          * These ones are included into parent flow list and will be destroyed
3923          * by flow_drv_destroy.
3924          */
3925         flow_qrss_free_id(dev, qrss_id);
3926         rte_free(ext_actions);
3927         return ret;
3928 }
3929
3930 /**
3931  * The splitting for meter feature.
3932  *
3933  * - The meter flow will be split to two flows as prefix and
3934  *   suffix flow. The packets make sense only it pass the prefix
3935  *   meter action.
3936  *
3937  * - Reg_C_5 is used for the packet to match betweend prefix and
3938  *   suffix flow.
3939  *
3940  * @param dev
3941  *   Pointer to Ethernet device.
3942  * @param[in] flow
3943  *   Parent flow structure pointer.
3944  * @param[in] attr
3945  *   Flow rule attributes.
3946  * @param[in] items
3947  *   Pattern specification (list terminated by the END pattern item).
3948  * @param[in] actions
3949  *   Associated actions (list terminated by the END action).
3950  * @param[in] external
3951  *   This flow rule is created by request external to PMD.
3952  * @param[out] error
3953  *   Perform verbose error reporting if not NULL.
3954  * @return
3955  *   0 on success, negative value otherwise
3956  */
3957 static int
3958 flow_create_split_meter(struct rte_eth_dev *dev,
3959                            struct rte_flow *flow,
3960                            const struct rte_flow_attr *attr,
3961                            const struct rte_flow_item items[],
3962                            const struct rte_flow_action actions[],
3963                            bool external, struct rte_flow_error *error)
3964 {
3965         struct mlx5_priv *priv = dev->data->dev_private;
3966         struct rte_flow_action *sfx_actions = NULL;
3967         struct rte_flow_action *pre_actions = NULL;
3968         struct rte_flow_item *sfx_items = NULL;
3969         const  struct rte_flow_item *sfx_port_id_item;
3970         struct mlx5_flow *dev_flow = NULL;
3971         struct rte_flow_attr sfx_attr = *attr;
3972         uint32_t mtr = 0;
3973         uint32_t mtr_tag_id = 0;
3974         size_t act_size;
3975         size_t item_size;
3976         int actions_n = 0;
3977         int ret;
3978
3979         if (priv->mtr_en)
3980                 actions_n = flow_check_meter_action(actions, &mtr);
3981         if (mtr) {
3982                 struct mlx5_rte_flow_item_tag *tag_spec;
3983                 struct mlx5_rte_flow_item_tag *tag_mask;
3984                 /* The five prefix actions: meter, decap, encap, tag, end. */
3985                 act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
3986                            sizeof(struct rte_flow_action_set_tag);
3987                 /* tag, end. */
3988 #define METER_SUFFIX_ITEM 3
3989                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
3990                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
3991                 sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
3992                 if (!sfx_actions)
3993                         return rte_flow_error_set(error, ENOMEM,
3994                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3995                                                   NULL, "no memory to split "
3996                                                   "meter flow");
3997                 pre_actions = sfx_actions + actions_n;
3998                 mtr_tag_id = flow_meter_split_prep(dev, actions, sfx_actions,
3999                                                      pre_actions);
4000                 if (!mtr_tag_id) {
4001                         ret = -rte_errno;
4002                         goto exit;
4003                 }
4004                 /* Add the prefix subflow. */
4005                 ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
4006                                                   pre_actions, external, error);
4007                 if (ret) {
4008                         ret = -rte_errno;
4009                         goto exit;
4010                 }
4011                 dev_flow->mtr_flow_id = mtr_tag_id;
4012                 /* Prepare the suffix flow match pattern. */
4013                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
4014                              act_size);
4015                 tag_spec = (struct mlx5_rte_flow_item_tag *)(sfx_items +
4016                             METER_SUFFIX_ITEM);
4017                 tag_spec->data = dev_flow->mtr_flow_id << MLX5_MTR_COLOR_BITS;
4018                 tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0,
4019                                                     error);
4020                 tag_mask = tag_spec + 1;
4021                 tag_mask->data = 0xffffff00;
4022                 sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
4023                 sfx_items->spec = tag_spec;
4024                 sfx_items->last = NULL;
4025                 sfx_items->mask = tag_mask;
4026                 sfx_items++;
4027                 sfx_port_id_item = find_port_id_item(items);
4028                 if (sfx_port_id_item) {
4029                         memcpy(sfx_items, sfx_port_id_item,
4030                                sizeof(*sfx_items));
4031                         sfx_items++;
4032                 }
4033                 sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
4034                 sfx_items -= sfx_port_id_item ? 2 : 1;
4035                 /* Setting the sfx group atrr. */
4036                 sfx_attr.group = sfx_attr.transfer ?
4037                                 (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
4038                                  MLX5_FLOW_TABLE_LEVEL_SUFFIX;
4039         }
4040         /* Add the prefix subflow. */
4041         ret = flow_create_split_metadata(dev, flow, &sfx_attr,
4042                                          sfx_items ? sfx_items : items,
4043                                          sfx_actions ? sfx_actions : actions,
4044                                          external, error);
4045 exit:
4046         if (sfx_actions)
4047                 rte_free(sfx_actions);
4048         return ret;
4049 }
4050
4051 /**
4052  * Split the flow to subflow set. The splitters might be linked
4053  * in the chain, like this:
4054  * flow_create_split_outer() calls:
4055  *   flow_create_split_meter() calls:
4056  *     flow_create_split_metadata(meter_subflow_0) calls:
4057  *       flow_create_split_inner(metadata_subflow_0)
4058  *       flow_create_split_inner(metadata_subflow_1)
4059  *       flow_create_split_inner(metadata_subflow_2)
4060  *     flow_create_split_metadata(meter_subflow_1) calls:
4061  *       flow_create_split_inner(metadata_subflow_0)
4062  *       flow_create_split_inner(metadata_subflow_1)
4063  *       flow_create_split_inner(metadata_subflow_2)
4064  *
4065  * This provide flexible way to add new levels of flow splitting.
4066  * The all of successfully created subflows are included to the
4067  * parent flow dev_flow list.
4068  *
4069  * @param dev
4070  *   Pointer to Ethernet device.
4071  * @param[in] flow
4072  *   Parent flow structure pointer.
4073  * @param[in] attr
4074  *   Flow rule attributes.
4075  * @param[in] items
4076  *   Pattern specification (list terminated by the END pattern item).
4077  * @param[in] actions
4078  *   Associated actions (list terminated by the END action).
4079  * @param[in] external
4080  *   This flow rule is created by request external to PMD.
4081  * @param[out] error
4082  *   Perform verbose error reporting if not NULL.
4083  * @return
4084  *   0 on success, negative value otherwise
4085  */
4086 static int
4087 flow_create_split_outer(struct rte_eth_dev *dev,
4088                         struct rte_flow *flow,
4089                         const struct rte_flow_attr *attr,
4090                         const struct rte_flow_item items[],
4091                         const struct rte_flow_action actions[],
4092                         bool external, struct rte_flow_error *error)
4093 {
4094         int ret;
4095
4096         ret = flow_create_split_meter(dev, flow, attr, items,
4097                                          actions, external, error);
4098         assert(ret <= 0);
4099         return ret;
4100 }
4101
4102 /**
4103  * Create a flow and add it to @p list.
4104  *
4105  * @param dev
4106  *   Pointer to Ethernet device.
4107  * @param list
4108  *   Pointer to a TAILQ flow list. If this parameter NULL,
4109  *   no list insertion occurred, flow is just created,
4110  *   this is caller's responsibility to track the
4111  *   created flow.
4112  * @param[in] attr
4113  *   Flow rule attributes.
4114  * @param[in] items
4115  *   Pattern specification (list terminated by the END pattern item).
4116  * @param[in] actions
4117  *   Associated actions (list terminated by the END action).
4118  * @param[in] external
4119  *   This flow rule is created by request external to PMD.
4120  * @param[out] error
4121  *   Perform verbose error reporting if not NULL.
4122  *
4123  * @return
4124  *   A flow on success, NULL otherwise and rte_errno is set.
4125  */
4126 static struct rte_flow *
4127 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
4128                  const struct rte_flow_attr *attr,
4129                  const struct rte_flow_item items[],
4130                  const struct rte_flow_action actions[],
4131                  bool external, struct rte_flow_error *error)
4132 {
4133         struct mlx5_priv *priv = dev->data->dev_private;
4134         struct rte_flow *flow = NULL;
4135         struct mlx5_flow *dev_flow;
4136         const struct rte_flow_action_rss *rss;
4137         union {
4138                 struct rte_flow_expand_rss buf;
4139                 uint8_t buffer[2048];
4140         } expand_buffer;
4141         union {
4142                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4143                 uint8_t buffer[2048];
4144         } actions_rx;
4145         union {
4146                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4147                 uint8_t buffer[2048];
4148         } actions_hairpin_tx;
4149         union {
4150                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
4151                 uint8_t buffer[2048];
4152         } items_tx;
4153         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
4154         const struct rte_flow_action *p_actions_rx = actions;
4155         int ret;
4156         uint32_t i;
4157         uint32_t flow_size;
4158         int hairpin_flow = 0;
4159         uint32_t hairpin_id = 0;
4160         struct rte_flow_attr attr_tx = { .priority = 0 };
4161
4162         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4163         if (hairpin_flow > 0) {
4164                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
4165                         rte_errno = EINVAL;
4166                         return NULL;
4167                 }
4168                 flow_hairpin_split(dev, actions, actions_rx.actions,
4169                                    actions_hairpin_tx.actions, items_tx.items,
4170                                    &hairpin_id);
4171                 p_actions_rx = actions_rx.actions;
4172         }
4173         ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
4174                                 error);
4175         if (ret < 0)
4176                 goto error_before_flow;
4177         flow_size = sizeof(struct rte_flow);
4178         rss = flow_get_rss_action(p_actions_rx);
4179         if (rss)
4180                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
4181                                             sizeof(void *));
4182         else
4183                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
4184         flow = rte_calloc(__func__, 1, flow_size, 0);
4185         if (!flow) {
4186                 rte_errno = ENOMEM;
4187                 goto error_before_flow;
4188         }
4189         flow->drv_type = flow_get_drv_type(dev, attr);
4190         if (hairpin_id != 0)
4191                 flow->hairpin_flow_id = hairpin_id;
4192         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
4193                flow->drv_type < MLX5_FLOW_TYPE_MAX);
4194         flow->rss.queue = (void *)(flow + 1);
4195         if (rss) {
4196                 /*
4197                  * The following information is required by
4198                  * mlx5_flow_hashfields_adjust() in advance.
4199                  */
4200                 flow->rss.level = rss->level;
4201                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
4202                 flow->rss.types = !rss->types ? ETH_RSS_IP : rss->types;
4203         }
4204         LIST_INIT(&flow->dev_flows);
4205         if (rss && rss->types) {
4206                 unsigned int graph_root;
4207
4208                 graph_root = find_graph_root(items, rss->level);
4209                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
4210                                           items, rss->types,
4211                                           mlx5_support_expansion,
4212                                           graph_root);
4213                 assert(ret > 0 &&
4214                        (unsigned int)ret < sizeof(expand_buffer.buffer));
4215         } else {
4216                 buf->entries = 1;
4217                 buf->entry[0].pattern = (void *)(uintptr_t)items;
4218         }
4219         for (i = 0; i < buf->entries; ++i) {
4220                 /*
4221                  * The splitter may create multiple dev_flows,
4222                  * depending on configuration. In the simplest
4223                  * case it just creates unmodified original flow.
4224                  */
4225                 ret = flow_create_split_outer(dev, flow, attr,
4226                                               buf->entry[i].pattern,
4227                                               p_actions_rx, external,
4228                                               error);
4229                 if (ret < 0)
4230                         goto error;
4231         }
4232         /* Create the tx flow. */
4233         if (hairpin_flow) {
4234                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
4235                 attr_tx.ingress = 0;
4236                 attr_tx.egress = 1;
4237                 dev_flow = flow_drv_prepare(flow, &attr_tx, items_tx.items,
4238                                             actions_hairpin_tx.actions, error);
4239                 if (!dev_flow)
4240                         goto error;
4241                 dev_flow->flow = flow;
4242                 dev_flow->external = 0;
4243                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
4244                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
4245                                          items_tx.items,
4246                                          actions_hairpin_tx.actions, error);
4247                 if (ret < 0)
4248                         goto error;
4249         }
4250         /*
4251          * Update the metadata register copy table. If extensive
4252          * metadata feature is enabled and registers are supported
4253          * we might create the extra rte_flow for each unique
4254          * MARK/FLAG action ID.
4255          *
4256          * The table is updated for ingress Flows only, because
4257          * the egress Flows belong to the different device and
4258          * copy table should be updated in peer NIC Rx domain.
4259          */
4260         if (attr->ingress &&
4261             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
4262                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
4263                 if (ret)
4264                         goto error;
4265         }
4266         if (dev->data->dev_started) {
4267                 ret = flow_drv_apply(dev, flow, error);
4268                 if (ret < 0)
4269                         goto error;
4270         }
4271         if (list)
4272                 TAILQ_INSERT_TAIL(list, flow, next);
4273         flow_rxq_flags_set(dev, flow);
4274         return flow;
4275 error_before_flow:
4276         if (hairpin_id)
4277                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4278                                      hairpin_id);
4279         return NULL;
4280 error:
4281         assert(flow);
4282         flow_mreg_del_copy_action(dev, flow);
4283         ret = rte_errno; /* Save rte_errno before cleanup. */
4284         if (flow->hairpin_flow_id)
4285                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4286                                      flow->hairpin_flow_id);
4287         assert(flow);
4288         flow_drv_destroy(dev, flow);
4289         rte_free(flow);
4290         rte_errno = ret; /* Restore rte_errno. */
4291         return NULL;
4292 }
4293
4294 /**
4295  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
4296  * incoming packets to table 1.
4297  *
4298  * Other flow rules, requested for group n, will be created in
4299  * e-switch table n+1.
4300  * Jump action to e-switch group n will be created to group n+1.
4301  *
4302  * Used when working in switchdev mode, to utilise advantages of table 1
4303  * and above.
4304  *
4305  * @param dev
4306  *   Pointer to Ethernet device.
4307  *
4308  * @return
4309  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
4310  */
4311 struct rte_flow *
4312 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
4313 {
4314         const struct rte_flow_attr attr = {
4315                 .group = 0,
4316                 .priority = 0,
4317                 .ingress = 1,
4318                 .egress = 0,
4319                 .transfer = 1,
4320         };
4321         const struct rte_flow_item pattern = {
4322                 .type = RTE_FLOW_ITEM_TYPE_END,
4323         };
4324         struct rte_flow_action_jump jump = {
4325                 .group = 1,
4326         };
4327         const struct rte_flow_action actions[] = {
4328                 {
4329                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4330                         .conf = &jump,
4331                 },
4332                 {
4333                         .type = RTE_FLOW_ACTION_TYPE_END,
4334                 },
4335         };
4336         struct mlx5_priv *priv = dev->data->dev_private;
4337         struct rte_flow_error error;
4338
4339         return flow_list_create(dev, &priv->ctrl_flows, &attr, &pattern,
4340                                 actions, false, &error);
4341 }
4342
4343 /**
4344  * Create a flow.
4345  *
4346  * @see rte_flow_create()
4347  * @see rte_flow_ops
4348  */
4349 struct rte_flow *
4350 mlx5_flow_create(struct rte_eth_dev *dev,
4351                  const struct rte_flow_attr *attr,
4352                  const struct rte_flow_item items[],
4353                  const struct rte_flow_action actions[],
4354                  struct rte_flow_error *error)
4355 {
4356         struct mlx5_priv *priv = dev->data->dev_private;
4357
4358         return flow_list_create(dev, &priv->flows,
4359                                 attr, items, actions, true, error);
4360 }
4361
4362 /**
4363  * Destroy a flow in a list.
4364  *
4365  * @param dev
4366  *   Pointer to Ethernet device.
4367  * @param list
4368  *   Pointer to a TAILQ flow list. If this parameter NULL,
4369  *   there is no flow removal from the list.
4370  * @param[in] flow
4371  *   Flow to destroy.
4372  */
4373 static void
4374 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
4375                   struct rte_flow *flow)
4376 {
4377         struct mlx5_priv *priv = dev->data->dev_private;
4378
4379         /*
4380          * Update RX queue flags only if port is started, otherwise it is
4381          * already clean.
4382          */
4383         if (dev->data->dev_started)
4384                 flow_rxq_flags_trim(dev, flow);
4385         if (flow->hairpin_flow_id)
4386                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4387                                      flow->hairpin_flow_id);
4388         flow_drv_destroy(dev, flow);
4389         if (list)
4390                 TAILQ_REMOVE(list, flow, next);
4391         flow_mreg_del_copy_action(dev, flow);
4392         rte_free(flow->fdir);
4393         rte_free(flow);
4394 }
4395
4396 /**
4397  * Destroy all flows.
4398  *
4399  * @param dev
4400  *   Pointer to Ethernet device.
4401  * @param list
4402  *   Pointer to a TAILQ flow list.
4403  */
4404 void
4405 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
4406 {
4407         while (!TAILQ_EMPTY(list)) {
4408                 struct rte_flow *flow;
4409
4410                 flow = TAILQ_FIRST(list);
4411                 flow_list_destroy(dev, list, flow);
4412         }
4413 }
4414
4415 /**
4416  * Remove all flows.
4417  *
4418  * @param dev
4419  *   Pointer to Ethernet device.
4420  * @param list
4421  *   Pointer to a TAILQ flow list.
4422  */
4423 void
4424 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
4425 {
4426         struct rte_flow *flow;
4427
4428         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
4429                 flow_drv_remove(dev, flow);
4430                 flow_mreg_stop_copy_action(dev, flow);
4431         }
4432         flow_mreg_del_default_copy_action(dev);
4433         flow_rxq_flags_clear(dev);
4434 }
4435
4436 /**
4437  * Add all flows.
4438  *
4439  * @param dev
4440  *   Pointer to Ethernet device.
4441  * @param list
4442  *   Pointer to a TAILQ flow list.
4443  *
4444  * @return
4445  *   0 on success, a negative errno value otherwise and rte_errno is set.
4446  */
4447 int
4448 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
4449 {
4450         struct rte_flow *flow;
4451         struct rte_flow_error error;
4452         int ret = 0;
4453
4454         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4455         ret = flow_mreg_add_default_copy_action(dev, &error);
4456         if (ret < 0)
4457                 return -rte_errno;
4458         /* Apply Flows created by application. */
4459         TAILQ_FOREACH(flow, list, next) {
4460                 ret = flow_mreg_start_copy_action(dev, flow);
4461                 if (ret < 0)
4462                         goto error;
4463                 ret = flow_drv_apply(dev, flow, &error);
4464                 if (ret < 0)
4465                         goto error;
4466                 flow_rxq_flags_set(dev, flow);
4467         }
4468         return 0;
4469 error:
4470         ret = rte_errno; /* Save rte_errno before cleanup. */
4471         mlx5_flow_stop(dev, list);
4472         rte_errno = ret; /* Restore rte_errno. */
4473         return -rte_errno;
4474 }
4475
4476 /**
4477  * Verify the flow list is empty
4478  *
4479  * @param dev
4480  *  Pointer to Ethernet device.
4481  *
4482  * @return the number of flows not released.
4483  */
4484 int
4485 mlx5_flow_verify(struct rte_eth_dev *dev)
4486 {
4487         struct mlx5_priv *priv = dev->data->dev_private;
4488         struct rte_flow *flow;
4489         int ret = 0;
4490
4491         TAILQ_FOREACH(flow, &priv->flows, next) {
4492                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
4493                         dev->data->port_id, (void *)flow);
4494                 ++ret;
4495         }
4496         return ret;
4497 }
4498
4499 /**
4500  * Enable default hairpin egress flow.
4501  *
4502  * @param dev
4503  *   Pointer to Ethernet device.
4504  * @param queue
4505  *   The queue index.
4506  *
4507  * @return
4508  *   0 on success, a negative errno value otherwise and rte_errno is set.
4509  */
4510 int
4511 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
4512                             uint32_t queue)
4513 {
4514         struct mlx5_priv *priv = dev->data->dev_private;
4515         const struct rte_flow_attr attr = {
4516                 .egress = 1,
4517                 .priority = 0,
4518         };
4519         struct mlx5_rte_flow_item_tx_queue queue_spec = {
4520                 .queue = queue,
4521         };
4522         struct mlx5_rte_flow_item_tx_queue queue_mask = {
4523                 .queue = UINT32_MAX,
4524         };
4525         struct rte_flow_item items[] = {
4526                 {
4527                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
4528                         .spec = &queue_spec,
4529                         .last = NULL,
4530                         .mask = &queue_mask,
4531                 },
4532                 {
4533                         .type = RTE_FLOW_ITEM_TYPE_END,
4534                 },
4535         };
4536         struct rte_flow_action_jump jump = {
4537                 .group = MLX5_HAIRPIN_TX_TABLE,
4538         };
4539         struct rte_flow_action actions[2];
4540         struct rte_flow *flow;
4541         struct rte_flow_error error;
4542
4543         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
4544         actions[0].conf = &jump;
4545         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
4546         flow = flow_list_create(dev, &priv->ctrl_flows,
4547                                 &attr, items, actions, false, &error);
4548         if (!flow) {
4549                 DRV_LOG(DEBUG,
4550                         "Failed to create ctrl flow: rte_errno(%d),"
4551                         " type(%d), message(%s)",
4552                         rte_errno, error.type,
4553                         error.message ? error.message : " (no stated reason)");
4554                 return -rte_errno;
4555         }
4556         return 0;
4557 }
4558
4559 /**
4560  * Enable a control flow configured from the control plane.
4561  *
4562  * @param dev
4563  *   Pointer to Ethernet device.
4564  * @param eth_spec
4565  *   An Ethernet flow spec to apply.
4566  * @param eth_mask
4567  *   An Ethernet flow mask to apply.
4568  * @param vlan_spec
4569  *   A VLAN flow spec to apply.
4570  * @param vlan_mask
4571  *   A VLAN flow mask to apply.
4572  *
4573  * @return
4574  *   0 on success, a negative errno value otherwise and rte_errno is set.
4575  */
4576 int
4577 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
4578                     struct rte_flow_item_eth *eth_spec,
4579                     struct rte_flow_item_eth *eth_mask,
4580                     struct rte_flow_item_vlan *vlan_spec,
4581                     struct rte_flow_item_vlan *vlan_mask)
4582 {
4583         struct mlx5_priv *priv = dev->data->dev_private;
4584         const struct rte_flow_attr attr = {
4585                 .ingress = 1,
4586                 .priority = MLX5_FLOW_PRIO_RSVD,
4587         };
4588         struct rte_flow_item items[] = {
4589                 {
4590                         .type = RTE_FLOW_ITEM_TYPE_ETH,
4591                         .spec = eth_spec,
4592                         .last = NULL,
4593                         .mask = eth_mask,
4594                 },
4595                 {
4596                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
4597                                               RTE_FLOW_ITEM_TYPE_END,
4598                         .spec = vlan_spec,
4599                         .last = NULL,
4600                         .mask = vlan_mask,
4601                 },
4602                 {
4603                         .type = RTE_FLOW_ITEM_TYPE_END,
4604                 },
4605         };
4606         uint16_t queue[priv->reta_idx_n];
4607         struct rte_flow_action_rss action_rss = {
4608                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
4609                 .level = 0,
4610                 .types = priv->rss_conf.rss_hf,
4611                 .key_len = priv->rss_conf.rss_key_len,
4612                 .queue_num = priv->reta_idx_n,
4613                 .key = priv->rss_conf.rss_key,
4614                 .queue = queue,
4615         };
4616         struct rte_flow_action actions[] = {
4617                 {
4618                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4619                         .conf = &action_rss,
4620                 },
4621                 {
4622                         .type = RTE_FLOW_ACTION_TYPE_END,
4623                 },
4624         };
4625         struct rte_flow *flow;
4626         struct rte_flow_error error;
4627         unsigned int i;
4628
4629         if (!priv->reta_idx_n || !priv->rxqs_n) {
4630                 return 0;
4631         }
4632         for (i = 0; i != priv->reta_idx_n; ++i)
4633                 queue[i] = (*priv->reta_idx)[i];
4634         flow = flow_list_create(dev, &priv->ctrl_flows,
4635                                 &attr, items, actions, false, &error);
4636         if (!flow)
4637                 return -rte_errno;
4638         return 0;
4639 }
4640
4641 /**
4642  * Enable a flow control configured from the control plane.
4643  *
4644  * @param dev
4645  *   Pointer to Ethernet device.
4646  * @param eth_spec
4647  *   An Ethernet flow spec to apply.
4648  * @param eth_mask
4649  *   An Ethernet flow mask to apply.
4650  *
4651  * @return
4652  *   0 on success, a negative errno value otherwise and rte_errno is set.
4653  */
4654 int
4655 mlx5_ctrl_flow(struct rte_eth_dev *dev,
4656                struct rte_flow_item_eth *eth_spec,
4657                struct rte_flow_item_eth *eth_mask)
4658 {
4659         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
4660 }
4661
4662 /**
4663  * Destroy a flow.
4664  *
4665  * @see rte_flow_destroy()
4666  * @see rte_flow_ops
4667  */
4668 int
4669 mlx5_flow_destroy(struct rte_eth_dev *dev,
4670                   struct rte_flow *flow,
4671                   struct rte_flow_error *error __rte_unused)
4672 {
4673         struct mlx5_priv *priv = dev->data->dev_private;
4674
4675         flow_list_destroy(dev, &priv->flows, flow);
4676         return 0;
4677 }
4678
4679 /**
4680  * Destroy all flows.
4681  *
4682  * @see rte_flow_flush()
4683  * @see rte_flow_ops
4684  */
4685 int
4686 mlx5_flow_flush(struct rte_eth_dev *dev,
4687                 struct rte_flow_error *error __rte_unused)
4688 {
4689         struct mlx5_priv *priv = dev->data->dev_private;
4690
4691         mlx5_flow_list_flush(dev, &priv->flows);
4692         return 0;
4693 }
4694
4695 /**
4696  * Isolated mode.
4697  *
4698  * @see rte_flow_isolate()
4699  * @see rte_flow_ops
4700  */
4701 int
4702 mlx5_flow_isolate(struct rte_eth_dev *dev,
4703                   int enable,
4704                   struct rte_flow_error *error)
4705 {
4706         struct mlx5_priv *priv = dev->data->dev_private;
4707
4708         if (dev->data->dev_started) {
4709                 rte_flow_error_set(error, EBUSY,
4710                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4711                                    NULL,
4712                                    "port must be stopped first");
4713                 return -rte_errno;
4714         }
4715         priv->isolated = !!enable;
4716         if (enable)
4717                 dev->dev_ops = &mlx5_dev_ops_isolate;
4718         else
4719                 dev->dev_ops = &mlx5_dev_ops;
4720         return 0;
4721 }
4722
4723 /**
4724  * Query a flow.
4725  *
4726  * @see rte_flow_query()
4727  * @see rte_flow_ops
4728  */
4729 static int
4730 flow_drv_query(struct rte_eth_dev *dev,
4731                struct rte_flow *flow,
4732                const struct rte_flow_action *actions,
4733                void *data,
4734                struct rte_flow_error *error)
4735 {
4736         const struct mlx5_flow_driver_ops *fops;
4737         enum mlx5_flow_drv_type ftype = flow->drv_type;
4738
4739         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
4740         fops = flow_get_drv_ops(ftype);
4741
4742         return fops->query(dev, flow, actions, data, error);
4743 }
4744
4745 /**
4746  * Query a flow.
4747  *
4748  * @see rte_flow_query()
4749  * @see rte_flow_ops
4750  */
4751 int
4752 mlx5_flow_query(struct rte_eth_dev *dev,
4753                 struct rte_flow *flow,
4754                 const struct rte_flow_action *actions,
4755                 void *data,
4756                 struct rte_flow_error *error)
4757 {
4758         int ret;
4759
4760         ret = flow_drv_query(dev, flow, actions, data, error);
4761         if (ret < 0)
4762                 return ret;
4763         return 0;
4764 }
4765
4766 /**
4767  * Convert a flow director filter to a generic flow.
4768  *
4769  * @param dev
4770  *   Pointer to Ethernet device.
4771  * @param fdir_filter
4772  *   Flow director filter to add.
4773  * @param attributes
4774  *   Generic flow parameters structure.
4775  *
4776  * @return
4777  *   0 on success, a negative errno value otherwise and rte_errno is set.
4778  */
4779 static int
4780 flow_fdir_filter_convert(struct rte_eth_dev *dev,
4781                          const struct rte_eth_fdir_filter *fdir_filter,
4782                          struct mlx5_fdir *attributes)
4783 {
4784         struct mlx5_priv *priv = dev->data->dev_private;
4785         const struct rte_eth_fdir_input *input = &fdir_filter->input;
4786         const struct rte_eth_fdir_masks *mask =
4787                 &dev->data->dev_conf.fdir_conf.mask;
4788
4789         /* Validate queue number. */
4790         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
4791                 DRV_LOG(ERR, "port %u invalid queue number %d",
4792                         dev->data->port_id, fdir_filter->action.rx_queue);
4793                 rte_errno = EINVAL;
4794                 return -rte_errno;
4795         }
4796         attributes->attr.ingress = 1;
4797         attributes->items[0] = (struct rte_flow_item) {
4798                 .type = RTE_FLOW_ITEM_TYPE_ETH,
4799                 .spec = &attributes->l2,
4800                 .mask = &attributes->l2_mask,
4801         };
4802         switch (fdir_filter->action.behavior) {
4803         case RTE_ETH_FDIR_ACCEPT:
4804                 attributes->actions[0] = (struct rte_flow_action){
4805                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
4806                         .conf = &attributes->queue,
4807                 };
4808                 break;
4809         case RTE_ETH_FDIR_REJECT:
4810                 attributes->actions[0] = (struct rte_flow_action){
4811                         .type = RTE_FLOW_ACTION_TYPE_DROP,
4812                 };
4813                 break;
4814         default:
4815                 DRV_LOG(ERR, "port %u invalid behavior %d",
4816                         dev->data->port_id,
4817                         fdir_filter->action.behavior);
4818                 rte_errno = ENOTSUP;
4819                 return -rte_errno;
4820         }
4821         attributes->queue.index = fdir_filter->action.rx_queue;
4822         /* Handle L3. */
4823         switch (fdir_filter->input.flow_type) {
4824         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4825         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4826         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4827                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
4828                         .src_addr = input->flow.ip4_flow.src_ip,
4829                         .dst_addr = input->flow.ip4_flow.dst_ip,
4830                         .time_to_live = input->flow.ip4_flow.ttl,
4831                         .type_of_service = input->flow.ip4_flow.tos,
4832                 };
4833                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
4834                         .src_addr = mask->ipv4_mask.src_ip,
4835                         .dst_addr = mask->ipv4_mask.dst_ip,
4836                         .time_to_live = mask->ipv4_mask.ttl,
4837                         .type_of_service = mask->ipv4_mask.tos,
4838                         .next_proto_id = mask->ipv4_mask.proto,
4839                 };
4840                 attributes->items[1] = (struct rte_flow_item){
4841                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
4842                         .spec = &attributes->l3,
4843                         .mask = &attributes->l3_mask,
4844                 };
4845                 break;
4846         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4847         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4848         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4849                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
4850                         .hop_limits = input->flow.ipv6_flow.hop_limits,
4851                         .proto = input->flow.ipv6_flow.proto,
4852                 };
4853
4854                 memcpy(attributes->l3.ipv6.hdr.src_addr,
4855                        input->flow.ipv6_flow.src_ip,
4856                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4857                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
4858                        input->flow.ipv6_flow.dst_ip,
4859                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4860                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
4861                        mask->ipv6_mask.src_ip,
4862                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4863                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
4864                        mask->ipv6_mask.dst_ip,
4865                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4866                 attributes->items[1] = (struct rte_flow_item){
4867                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
4868                         .spec = &attributes->l3,
4869                         .mask = &attributes->l3_mask,
4870                 };
4871                 break;
4872         default:
4873                 DRV_LOG(ERR, "port %u invalid flow type%d",
4874                         dev->data->port_id, fdir_filter->input.flow_type);
4875                 rte_errno = ENOTSUP;
4876                 return -rte_errno;
4877         }
4878         /* Handle L4. */
4879         switch (fdir_filter->input.flow_type) {
4880         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4881                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4882                         .src_port = input->flow.udp4_flow.src_port,
4883                         .dst_port = input->flow.udp4_flow.dst_port,
4884                 };
4885                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4886                         .src_port = mask->src_port_mask,
4887                         .dst_port = mask->dst_port_mask,
4888                 };
4889                 attributes->items[2] = (struct rte_flow_item){
4890                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4891                         .spec = &attributes->l4,
4892                         .mask = &attributes->l4_mask,
4893                 };
4894                 break;
4895         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4896                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4897                         .src_port = input->flow.tcp4_flow.src_port,
4898                         .dst_port = input->flow.tcp4_flow.dst_port,
4899                 };
4900                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4901                         .src_port = mask->src_port_mask,
4902                         .dst_port = mask->dst_port_mask,
4903                 };
4904                 attributes->items[2] = (struct rte_flow_item){
4905                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4906                         .spec = &attributes->l4,
4907                         .mask = &attributes->l4_mask,
4908                 };
4909                 break;
4910         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4911                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4912                         .src_port = input->flow.udp6_flow.src_port,
4913                         .dst_port = input->flow.udp6_flow.dst_port,
4914                 };
4915                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4916                         .src_port = mask->src_port_mask,
4917                         .dst_port = mask->dst_port_mask,
4918                 };
4919                 attributes->items[2] = (struct rte_flow_item){
4920                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4921                         .spec = &attributes->l4,
4922                         .mask = &attributes->l4_mask,
4923                 };
4924                 break;
4925         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4926                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4927                         .src_port = input->flow.tcp6_flow.src_port,
4928                         .dst_port = input->flow.tcp6_flow.dst_port,
4929                 };
4930                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4931                         .src_port = mask->src_port_mask,
4932                         .dst_port = mask->dst_port_mask,
4933                 };
4934                 attributes->items[2] = (struct rte_flow_item){
4935                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4936                         .spec = &attributes->l4,
4937                         .mask = &attributes->l4_mask,
4938                 };
4939                 break;
4940         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4941         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4942                 break;
4943         default:
4944                 DRV_LOG(ERR, "port %u invalid flow type%d",
4945                         dev->data->port_id, fdir_filter->input.flow_type);
4946                 rte_errno = ENOTSUP;
4947                 return -rte_errno;
4948         }
4949         return 0;
4950 }
4951
4952 #define FLOW_FDIR_CMP(f1, f2, fld) \
4953         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
4954
4955 /**
4956  * Compare two FDIR flows. If items and actions are identical, the two flows are
4957  * regarded as same.
4958  *
4959  * @param dev
4960  *   Pointer to Ethernet device.
4961  * @param f1
4962  *   FDIR flow to compare.
4963  * @param f2
4964  *   FDIR flow to compare.
4965  *
4966  * @return
4967  *   Zero on match, 1 otherwise.
4968  */
4969 static int
4970 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
4971 {
4972         if (FLOW_FDIR_CMP(f1, f2, attr) ||
4973             FLOW_FDIR_CMP(f1, f2, l2) ||
4974             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
4975             FLOW_FDIR_CMP(f1, f2, l3) ||
4976             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
4977             FLOW_FDIR_CMP(f1, f2, l4) ||
4978             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
4979             FLOW_FDIR_CMP(f1, f2, actions[0].type))
4980                 return 1;
4981         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
4982             FLOW_FDIR_CMP(f1, f2, queue))
4983                 return 1;
4984         return 0;
4985 }
4986
4987 /**
4988  * Search device flow list to find out a matched FDIR flow.
4989  *
4990  * @param dev
4991  *   Pointer to Ethernet device.
4992  * @param fdir_flow
4993  *   FDIR flow to lookup.
4994  *
4995  * @return
4996  *   Pointer of flow if found, NULL otherwise.
4997  */
4998 static struct rte_flow *
4999 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
5000 {
5001         struct mlx5_priv *priv = dev->data->dev_private;
5002         struct rte_flow *flow = NULL;
5003
5004         assert(fdir_flow);
5005         TAILQ_FOREACH(flow, &priv->flows, next) {
5006                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
5007                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
5008                                 dev->data->port_id, (void *)flow);
5009                         break;
5010                 }
5011         }
5012         return flow;
5013 }
5014
5015 /**
5016  * Add new flow director filter and store it in list.
5017  *
5018  * @param dev
5019  *   Pointer to Ethernet device.
5020  * @param fdir_filter
5021  *   Flow director filter to add.
5022  *
5023  * @return
5024  *   0 on success, a negative errno value otherwise and rte_errno is set.
5025  */
5026 static int
5027 flow_fdir_filter_add(struct rte_eth_dev *dev,
5028                      const struct rte_eth_fdir_filter *fdir_filter)
5029 {
5030         struct mlx5_priv *priv = dev->data->dev_private;
5031         struct mlx5_fdir *fdir_flow;
5032         struct rte_flow *flow;
5033         int ret;
5034
5035         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
5036         if (!fdir_flow) {
5037                 rte_errno = ENOMEM;
5038                 return -rte_errno;
5039         }
5040         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
5041         if (ret)
5042                 goto error;
5043         flow = flow_fdir_filter_lookup(dev, fdir_flow);
5044         if (flow) {
5045                 rte_errno = EEXIST;
5046                 goto error;
5047         }
5048         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
5049                                 fdir_flow->items, fdir_flow->actions, true,
5050                                 NULL);
5051         if (!flow)
5052                 goto error;
5053         assert(!flow->fdir);
5054         flow->fdir = fdir_flow;
5055         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
5056                 dev->data->port_id, (void *)flow);
5057         return 0;
5058 error:
5059         rte_free(fdir_flow);
5060         return -rte_errno;
5061 }
5062
5063 /**
5064  * Delete specific filter.
5065  *
5066  * @param dev
5067  *   Pointer to Ethernet device.
5068  * @param fdir_filter
5069  *   Filter to be deleted.
5070  *
5071  * @return
5072  *   0 on success, a negative errno value otherwise and rte_errno is set.
5073  */
5074 static int
5075 flow_fdir_filter_delete(struct rte_eth_dev *dev,
5076                         const struct rte_eth_fdir_filter *fdir_filter)
5077 {
5078         struct mlx5_priv *priv = dev->data->dev_private;
5079         struct rte_flow *flow;
5080         struct mlx5_fdir fdir_flow = {
5081                 .attr.group = 0,
5082         };
5083         int ret;
5084
5085         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
5086         if (ret)
5087                 return -rte_errno;
5088         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
5089         if (!flow) {
5090                 rte_errno = ENOENT;
5091                 return -rte_errno;
5092         }
5093         flow_list_destroy(dev, &priv->flows, flow);
5094         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
5095                 dev->data->port_id, (void *)flow);
5096         return 0;
5097 }
5098
5099 /**
5100  * Update queue for specific filter.
5101  *
5102  * @param dev
5103  *   Pointer to Ethernet device.
5104  * @param fdir_filter
5105  *   Filter to be updated.
5106  *
5107  * @return
5108  *   0 on success, a negative errno value otherwise and rte_errno is set.
5109  */
5110 static int
5111 flow_fdir_filter_update(struct rte_eth_dev *dev,
5112                         const struct rte_eth_fdir_filter *fdir_filter)
5113 {
5114         int ret;
5115
5116         ret = flow_fdir_filter_delete(dev, fdir_filter);
5117         if (ret)
5118                 return ret;
5119         return flow_fdir_filter_add(dev, fdir_filter);
5120 }
5121
5122 /**
5123  * Flush all filters.
5124  *
5125  * @param dev
5126  *   Pointer to Ethernet device.
5127  */
5128 static void
5129 flow_fdir_filter_flush(struct rte_eth_dev *dev)
5130 {
5131         struct mlx5_priv *priv = dev->data->dev_private;
5132
5133         mlx5_flow_list_flush(dev, &priv->flows);
5134 }
5135
5136 /**
5137  * Get flow director information.
5138  *
5139  * @param dev
5140  *   Pointer to Ethernet device.
5141  * @param[out] fdir_info
5142  *   Resulting flow director information.
5143  */
5144 static void
5145 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
5146 {
5147         struct rte_eth_fdir_masks *mask =
5148                 &dev->data->dev_conf.fdir_conf.mask;
5149
5150         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
5151         fdir_info->guarant_spc = 0;
5152         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
5153         fdir_info->max_flexpayload = 0;
5154         fdir_info->flow_types_mask[0] = 0;
5155         fdir_info->flex_payload_unit = 0;
5156         fdir_info->max_flex_payload_segment_num = 0;
5157         fdir_info->flex_payload_limit = 0;
5158         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
5159 }
5160
5161 /**
5162  * Deal with flow director operations.
5163  *
5164  * @param dev
5165  *   Pointer to Ethernet device.
5166  * @param filter_op
5167  *   Operation to perform.
5168  * @param arg
5169  *   Pointer to operation-specific structure.
5170  *
5171  * @return
5172  *   0 on success, a negative errno value otherwise and rte_errno is set.
5173  */
5174 static int
5175 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
5176                     void *arg)
5177 {
5178         enum rte_fdir_mode fdir_mode =
5179                 dev->data->dev_conf.fdir_conf.mode;
5180
5181         if (filter_op == RTE_ETH_FILTER_NOP)
5182                 return 0;
5183         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
5184             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
5185                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
5186                         dev->data->port_id, fdir_mode);
5187                 rte_errno = EINVAL;
5188                 return -rte_errno;
5189         }
5190         switch (filter_op) {
5191         case RTE_ETH_FILTER_ADD:
5192                 return flow_fdir_filter_add(dev, arg);
5193         case RTE_ETH_FILTER_UPDATE:
5194                 return flow_fdir_filter_update(dev, arg);
5195         case RTE_ETH_FILTER_DELETE:
5196                 return flow_fdir_filter_delete(dev, arg);
5197         case RTE_ETH_FILTER_FLUSH:
5198                 flow_fdir_filter_flush(dev);
5199                 break;
5200         case RTE_ETH_FILTER_INFO:
5201                 flow_fdir_info_get(dev, arg);
5202                 break;
5203         default:
5204                 DRV_LOG(DEBUG, "port %u unknown operation %u",
5205                         dev->data->port_id, filter_op);
5206                 rte_errno = EINVAL;
5207                 return -rte_errno;
5208         }
5209         return 0;
5210 }
5211
5212 /**
5213  * Manage filter operations.
5214  *
5215  * @param dev
5216  *   Pointer to Ethernet device structure.
5217  * @param filter_type
5218  *   Filter type.
5219  * @param filter_op
5220  *   Operation to perform.
5221  * @param arg
5222  *   Pointer to operation-specific structure.
5223  *
5224  * @return
5225  *   0 on success, a negative errno value otherwise and rte_errno is set.
5226  */
5227 int
5228 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
5229                      enum rte_filter_type filter_type,
5230                      enum rte_filter_op filter_op,
5231                      void *arg)
5232 {
5233         switch (filter_type) {
5234         case RTE_ETH_FILTER_GENERIC:
5235                 if (filter_op != RTE_ETH_FILTER_GET) {
5236                         rte_errno = EINVAL;
5237                         return -rte_errno;
5238                 }
5239                 *(const void **)arg = &mlx5_flow_ops;
5240                 return 0;
5241         case RTE_ETH_FILTER_FDIR:
5242                 return flow_fdir_ctrl_func(dev, filter_op, arg);
5243         default:
5244                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
5245                         dev->data->port_id, filter_type);
5246                 rte_errno = ENOTSUP;
5247                 return -rte_errno;
5248         }
5249         return 0;
5250 }
5251
5252 /**
5253  * Create the needed meter and suffix tables.
5254  *
5255  * @param[in] dev
5256  *   Pointer to Ethernet device.
5257  * @param[in] fm
5258  *   Pointer to the flow meter.
5259  *
5260  * @return
5261  *   Pointer to table set on success, NULL otherwise.
5262  */
5263 struct mlx5_meter_domains_infos *
5264 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
5265                           const struct mlx5_flow_meter *fm)
5266 {
5267         const struct mlx5_flow_driver_ops *fops;
5268
5269         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5270         return fops->create_mtr_tbls(dev, fm);
5271 }
5272
5273 /**
5274  * Destroy the meter table set.
5275  *
5276  * @param[in] dev
5277  *   Pointer to Ethernet device.
5278  * @param[in] tbl
5279  *   Pointer to the meter table set.
5280  *
5281  * @return
5282  *   0 on success.
5283  */
5284 int
5285 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
5286                            struct mlx5_meter_domains_infos *tbls)
5287 {
5288         const struct mlx5_flow_driver_ops *fops;
5289
5290         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5291         return fops->destroy_mtr_tbls(dev, tbls);
5292 }
5293
5294 /**
5295  * Create policer rules.
5296  *
5297  * @param[in] dev
5298  *   Pointer to Ethernet device.
5299  * @param[in] fm
5300  *   Pointer to flow meter structure.
5301  * @param[in] attr
5302  *   Pointer to flow attributes.
5303  *
5304  * @return
5305  *   0 on success, -1 otherwise.
5306  */
5307 int
5308 mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
5309                                struct mlx5_flow_meter *fm,
5310                                const struct rte_flow_attr *attr)
5311 {
5312         const struct mlx5_flow_driver_ops *fops;
5313
5314         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5315         return fops->create_policer_rules(dev, fm, attr);
5316 }
5317
5318 /**
5319  * Destroy policer rules.
5320  *
5321  * @param[in] fm
5322  *   Pointer to flow meter structure.
5323  * @param[in] attr
5324  *   Pointer to flow attributes.
5325  *
5326  * @return
5327  *   0 on success, -1 otherwise.
5328  */
5329 int
5330 mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
5331                                 struct mlx5_flow_meter *fm,
5332                                 const struct rte_flow_attr *attr)
5333 {
5334         const struct mlx5_flow_driver_ops *fops;
5335
5336         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5337         return fops->destroy_policer_rules(dev, fm, attr);
5338 }
5339
5340 /**
5341  * Allocate a counter.
5342  *
5343  * @param[in] dev
5344  *   Pointer to Ethernet device structure.
5345  *
5346  * @return
5347  *   Pointer to allocated counter  on success, NULL otherwise.
5348  */
5349 struct mlx5_flow_counter *
5350 mlx5_counter_alloc(struct rte_eth_dev *dev)
5351 {
5352         const struct mlx5_flow_driver_ops *fops;
5353         struct rte_flow_attr attr = { .transfer = 0 };
5354
5355         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5356                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5357                 return fops->counter_alloc(dev);
5358         }
5359         DRV_LOG(ERR,
5360                 "port %u counter allocate is not supported.",
5361                  dev->data->port_id);
5362         return NULL;
5363 }
5364
5365 /**
5366  * Free a counter.
5367  *
5368  * @param[in] dev
5369  *   Pointer to Ethernet device structure.
5370  * @param[in] cnt
5371  *   Pointer to counter to be free.
5372  */
5373 void
5374 mlx5_counter_free(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt)
5375 {
5376         const struct mlx5_flow_driver_ops *fops;
5377         struct rte_flow_attr attr = { .transfer = 0 };
5378
5379         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5380                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5381                 fops->counter_free(dev, cnt);
5382                 return;
5383         }
5384         DRV_LOG(ERR,
5385                 "port %u counter free is not supported.",
5386                  dev->data->port_id);
5387 }
5388
5389 /**
5390  * Query counter statistics.
5391  *
5392  * @param[in] dev
5393  *   Pointer to Ethernet device structure.
5394  * @param[in] cnt
5395  *   Pointer to counter to query.
5396  * @param[in] clear
5397  *   Set to clear counter statistics.
5398  * @param[out] pkts
5399  *   The counter hits packets number to save.
5400  * @param[out] bytes
5401  *   The counter hits bytes number to save.
5402  *
5403  * @return
5404  *   0 on success, a negative errno value otherwise.
5405  */
5406 int
5407 mlx5_counter_query(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt,
5408                    bool clear, uint64_t *pkts, uint64_t *bytes)
5409 {
5410         const struct mlx5_flow_driver_ops *fops;
5411         struct rte_flow_attr attr = { .transfer = 0 };
5412
5413         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5414                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5415                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
5416         }
5417         DRV_LOG(ERR,
5418                 "port %u counter query is not supported.",
5419                  dev->data->port_id);
5420         return -ENOTSUP;
5421 }
5422
5423 #define MLX5_POOL_QUERY_FREQ_US 1000000
5424
5425 /**
5426  * Set the periodic procedure for triggering asynchronous batch queries for all
5427  * the counter pools.
5428  *
5429  * @param[in] sh
5430  *   Pointer to mlx5_ibv_shared object.
5431  */
5432 void
5433 mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
5434 {
5435         struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
5436         uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
5437         uint32_t us;
5438
5439         cont = MLX5_CNT_CONTAINER(sh, 1, 0);
5440         pools_n += rte_atomic16_read(&cont->n_valid);
5441         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
5442         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
5443         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
5444                 sh->cmng.query_thread_on = 0;
5445                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
5446         } else {
5447                 sh->cmng.query_thread_on = 1;
5448         }
5449 }
5450
5451 /**
5452  * The periodic procedure for triggering asynchronous batch queries for all the
5453  * counter pools. This function is probably called by the host thread.
5454  *
5455  * @param[in] arg
5456  *   The parameter for the alarm process.
5457  */
5458 void
5459 mlx5_flow_query_alarm(void *arg)
5460 {
5461         struct mlx5_ibv_shared *sh = arg;
5462         struct mlx5_devx_obj *dcs;
5463         uint16_t offset;
5464         int ret;
5465         uint8_t batch = sh->cmng.batch;
5466         uint16_t pool_index = sh->cmng.pool_index;
5467         struct mlx5_pools_container *cont;
5468         struct mlx5_pools_container *mcont;
5469         struct mlx5_flow_counter_pool *pool;
5470
5471         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
5472                 goto set_alarm;
5473 next_container:
5474         cont = MLX5_CNT_CONTAINER(sh, batch, 1);
5475         mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
5476         /* Check if resize was done and need to flip a container. */
5477         if (cont != mcont) {
5478                 if (cont->pools) {
5479                         /* Clean the old container. */
5480                         rte_free(cont->pools);
5481                         memset(cont, 0, sizeof(*cont));
5482                 }
5483                 rte_cio_wmb();
5484                  /* Flip the host container. */
5485                 sh->cmng.mhi[batch] ^= (uint8_t)2;
5486                 cont = mcont;
5487         }
5488         if (!cont->pools) {
5489                 /* 2 empty containers case is unexpected. */
5490                 if (unlikely(batch != sh->cmng.batch))
5491                         goto set_alarm;
5492                 batch ^= 0x1;
5493                 pool_index = 0;
5494                 goto next_container;
5495         }
5496         pool = cont->pools[pool_index];
5497         if (pool->raw_hw)
5498                 /* There is a pool query in progress. */
5499                 goto set_alarm;
5500         pool->raw_hw =
5501                 LIST_FIRST(&sh->cmng.free_stat_raws);
5502         if (!pool->raw_hw)
5503                 /* No free counter statistics raw memory. */
5504                 goto set_alarm;
5505         dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
5506                                                               (&pool->a64_dcs);
5507         offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
5508         ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
5509                                                offset, NULL, NULL,
5510                                                pool->raw_hw->mem_mng->dm->id,
5511                                                (void *)(uintptr_t)
5512                                                (pool->raw_hw->data + offset),
5513                                                sh->devx_comp,
5514                                                (uint64_t)(uintptr_t)pool);
5515         if (ret) {
5516                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
5517                         " %d", pool->min_dcs->id);
5518                 pool->raw_hw = NULL;
5519                 goto set_alarm;
5520         }
5521         pool->raw_hw->min_dcs_id = dcs->id;
5522         LIST_REMOVE(pool->raw_hw, next);
5523         sh->cmng.pending_queries++;
5524         pool_index++;
5525         if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
5526                 batch ^= 0x1;
5527                 pool_index = 0;
5528         }
5529 set_alarm:
5530         sh->cmng.batch = batch;
5531         sh->cmng.pool_index = pool_index;
5532         mlx5_set_query_alarm(sh);
5533 }
5534
5535 /**
5536  * Handler for the HW respond about ready values from an asynchronous batch
5537  * query. This function is probably called by the host thread.
5538  *
5539  * @param[in] sh
5540  *   The pointer to the shared IB device context.
5541  * @param[in] async_id
5542  *   The Devx async ID.
5543  * @param[in] status
5544  *   The status of the completion.
5545  */
5546 void
5547 mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
5548                                   uint64_t async_id, int status)
5549 {
5550         struct mlx5_flow_counter_pool *pool =
5551                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
5552         struct mlx5_counter_stats_raw *raw_to_free;
5553
5554         if (unlikely(status)) {
5555                 raw_to_free = pool->raw_hw;
5556         } else {
5557                 raw_to_free = pool->raw;
5558                 rte_spinlock_lock(&pool->sl);
5559                 pool->raw = pool->raw_hw;
5560                 rte_spinlock_unlock(&pool->sl);
5561                 rte_atomic64_add(&pool->query_gen, 1);
5562                 /* Be sure the new raw counters data is updated in memory. */
5563                 rte_cio_wmb();
5564         }
5565         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
5566         pool->raw_hw = NULL;
5567         sh->cmng.pending_queries--;
5568 }
5569
5570 /**
5571  * Translate the rte_flow group index to HW table value.
5572  *
5573  * @param[in] attributes
5574  *   Pointer to flow attributes
5575  * @param[in] external
5576  *   Value is part of flow rule created by request external to PMD.
5577  * @param[in] group
5578  *   rte_flow group index value.
5579  * @param[out] table
5580  *   HW table value.
5581  * @param[out] error
5582  *   Pointer to error structure.
5583  *
5584  * @return
5585  *   0 on success, a negative errno value otherwise and rte_errno is set.
5586  */
5587 int
5588 mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
5589                          uint32_t group, uint32_t *table,
5590                          struct rte_flow_error *error)
5591 {
5592         if (attributes->transfer && external) {
5593                 if (group == UINT32_MAX)
5594                         return rte_flow_error_set
5595                                                 (error, EINVAL,
5596                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
5597                                                  NULL,
5598                                                  "group index not supported");
5599                 *table = group + 1;
5600         } else {
5601                 *table = group;
5602         }
5603         return 0;
5604 }
5605
5606 /**
5607  * Discover availability of metadata reg_c's.
5608  *
5609  * Iteratively use test flows to check availability.
5610  *
5611  * @param[in] dev
5612  *   Pointer to the Ethernet device structure.
5613  *
5614  * @return
5615  *   0 on success, a negative errno value otherwise and rte_errno is set.
5616  */
5617 int
5618 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
5619 {
5620         struct mlx5_priv *priv = dev->data->dev_private;
5621         struct mlx5_dev_config *config = &priv->config;
5622         enum modify_reg idx;
5623         int n = 0;
5624
5625         /* reg_c[0] and reg_c[1] are reserved. */
5626         config->flow_mreg_c[n++] = REG_C_0;
5627         config->flow_mreg_c[n++] = REG_C_1;
5628         /* Discover availability of other reg_c's. */
5629         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
5630                 struct rte_flow_attr attr = {
5631                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5632                         .priority = MLX5_FLOW_PRIO_RSVD,
5633                         .ingress = 1,
5634                 };
5635                 struct rte_flow_item items[] = {
5636                         [0] = {
5637                                 .type = RTE_FLOW_ITEM_TYPE_END,
5638                         },
5639                 };
5640                 struct rte_flow_action actions[] = {
5641                         [0] = {
5642                                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5643                                 .conf = &(struct mlx5_flow_action_copy_mreg){
5644                                         .src = REG_C_1,
5645                                         .dst = idx,
5646                                 },
5647                         },
5648                         [1] = {
5649                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5650                                 .conf = &(struct rte_flow_action_jump){
5651                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5652                                 },
5653                         },
5654                         [2] = {
5655                                 .type = RTE_FLOW_ACTION_TYPE_END,
5656                         },
5657                 };
5658                 struct rte_flow *flow;
5659                 struct rte_flow_error error;
5660
5661                 if (!config->dv_flow_en)
5662                         break;
5663                 /* Create internal flow, validation skips copy action. */
5664                 flow = flow_list_create(dev, NULL, &attr, items,
5665                                         actions, false, &error);
5666                 if (!flow)
5667                         continue;
5668                 if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
5669                         config->flow_mreg_c[n++] = idx;
5670                 flow_list_destroy(dev, NULL, flow);
5671         }
5672         for (; n < MLX5_MREG_C_NUM; ++n)
5673                 config->flow_mreg_c[n] = REG_NONE;
5674         return 0;
5675 }
5676
5677 /**
5678  * Dump flow raw hw data to file
5679  *
5680  * @param[in] dev
5681  *    The pointer to Ethernet device.
5682  * @param[in] file
5683  *   A pointer to a file for output.
5684  * @param[out] error
5685  *   Perform verbose error reporting if not NULL. PMDs initialize this
5686  *   structure in case of error only.
5687  * @return
5688  *   0 on success, a nagative value otherwise.
5689  */
5690 int
5691 mlx5_flow_dev_dump(struct rte_eth_dev *dev,
5692                    FILE *file,
5693                    struct rte_flow_error *error __rte_unused)
5694 {
5695         struct mlx5_priv *priv = dev->data->dev_private;
5696         struct mlx5_ibv_shared *sh = priv->sh;
5697
5698         return mlx5_devx_cmd_flow_dump(sh->fdb_domain, sh->rx_domain,
5699                                        sh->tx_domain, file);
5700 }