drivers/net/mlx5/mlx5_flow.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016 6WIND S.A.
   3  * Copyright 2016 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <netinet/in.h>
   7 #include <sys/queue.h>
   8 #include <stdalign.h>
   9 #include <stdint.h>
  10 #include <string.h>
  11
  12 /* Verbs header. */
  13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  14 #ifdef PEDANTIC
  15 #pragma GCC diagnostic ignored "-Wpedantic"
  16 #endif
  17 #include <infiniband/verbs.h>
  18 #ifdef PEDANTIC
  19 #pragma GCC diagnostic error "-Wpedantic"
  20 #endif
  21
  22 #include <rte_common.h>
  23 #include <rte_ether.h>
  24 #include <rte_ethdev_driver.h>
  25 #include <rte_flow.h>
  26 #include <rte_flow_driver.h>
  27 #include <rte_malloc.h>
  28 #include <rte_ip.h>
  29
  30 #include <mlx5_glue.h>
  31 #include <mlx5_devx_cmds.h>
  32 #include <mlx5_prm.h>
  33
  34 #include "mlx5_defs.h"
  35 #include "mlx5.h"
  36 #include "mlx5_flow.h"
  37 #include "mlx5_rxtx.h"
  38
  39 /* Dev ops structure defined in mlx5.c */
  40 extern const struct eth_dev_ops mlx5_dev_ops;
  41 extern const struct eth_dev_ops mlx5_dev_ops_isolate;
  42
  43 /** Device flow drivers. */
  44 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  45 extern const struct mlx5_flow_driver_ops mlx5_flow_dv_drv_ops;
  46 #endif
  47 extern const struct mlx5_flow_driver_ops mlx5_flow_verbs_drv_ops;
  48
  49 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops;
  50
  51 const struct mlx5_flow_driver_ops *flow_drv_ops[] = {
  52         [MLX5_FLOW_TYPE_MIN] = &mlx5_flow_null_drv_ops,
  53 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
  54         [MLX5_FLOW_TYPE_DV] = &mlx5_flow_dv_drv_ops,
  55 #endif
  56         [MLX5_FLOW_TYPE_VERBS] = &mlx5_flow_verbs_drv_ops,
  57         [MLX5_FLOW_TYPE_MAX] = &mlx5_flow_null_drv_ops
  58 };
  59
  60 enum mlx5_expansion {
  61         MLX5_EXPANSION_ROOT,
  62         MLX5_EXPANSION_ROOT_OUTER,
  63         MLX5_EXPANSION_ROOT_ETH_VLAN,
  64         MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN,
  65         MLX5_EXPANSION_OUTER_ETH,
  66         MLX5_EXPANSION_OUTER_ETH_VLAN,
  67         MLX5_EXPANSION_OUTER_VLAN,
  68         MLX5_EXPANSION_OUTER_IPV4,
  69         MLX5_EXPANSION_OUTER_IPV4_UDP,
  70         MLX5_EXPANSION_OUTER_IPV4_TCP,
  71         MLX5_EXPANSION_OUTER_IPV6,
  72         MLX5_EXPANSION_OUTER_IPV6_UDP,
  73         MLX5_EXPANSION_OUTER_IPV6_TCP,
  74         MLX5_EXPANSION_VXLAN,
  75         MLX5_EXPANSION_VXLAN_GPE,
  76         MLX5_EXPANSION_GRE,
  77         MLX5_EXPANSION_MPLS,
  78         MLX5_EXPANSION_ETH,
  79         MLX5_EXPANSION_ETH_VLAN,
  80         MLX5_EXPANSION_VLAN,
  81         MLX5_EXPANSION_IPV4,
  82         MLX5_EXPANSION_IPV4_UDP,
  83         MLX5_EXPANSION_IPV4_TCP,
  84         MLX5_EXPANSION_IPV6,
  85         MLX5_EXPANSION_IPV6_UDP,
  86         MLX5_EXPANSION_IPV6_TCP,
  87 };
  88
  89 /** Supported expansion of items. */
  90 static const struct rte_flow_expand_node mlx5_support_expansion[] = {
  91         [MLX5_EXPANSION_ROOT] = {
  92                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
  93                                                  MLX5_EXPANSION_IPV4,
  94                                                  MLX5_EXPANSION_IPV6),
  95                 .type = RTE_FLOW_ITEM_TYPE_END,
  96         },
  97         [MLX5_EXPANSION_ROOT_OUTER] = {
  98                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH,
  99                                                  MLX5_EXPANSION_OUTER_IPV4,
 100                                                  MLX5_EXPANSION_OUTER_IPV6),
 101                 .type = RTE_FLOW_ITEM_TYPE_END,
 102         },
 103         [MLX5_EXPANSION_ROOT_ETH_VLAN] = {
 104                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH_VLAN),
 105                 .type = RTE_FLOW_ITEM_TYPE_END,
 106         },
 107         [MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN] = {
 108                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_ETH_VLAN),
 109                 .type = RTE_FLOW_ITEM_TYPE_END,
 110         },
 111         [MLX5_EXPANSION_OUTER_ETH] = {
 112                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 113                                                  MLX5_EXPANSION_OUTER_IPV6,
 114                                                  MLX5_EXPANSION_MPLS),
 115                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 116                 .rss_types = 0,
 117         },
 118         [MLX5_EXPANSION_OUTER_ETH_VLAN] = {
 119                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_VLAN),
 120                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 121                 .rss_types = 0,
 122         },
 123         [MLX5_EXPANSION_OUTER_VLAN] = {
 124                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_OUTER_IPV4,
 125                                                  MLX5_EXPANSION_OUTER_IPV6),
 126                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 127         },
 128         [MLX5_EXPANSION_OUTER_IPV4] = {
 129                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 130                         (MLX5_EXPANSION_OUTER_IPV4_UDP,
 131                          MLX5_EXPANSION_OUTER_IPV4_TCP,
 132                          MLX5_EXPANSION_GRE,
 133                          MLX5_EXPANSION_IPV4,
 134                          MLX5_EXPANSION_IPV6),
 135                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 136                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 137                         ETH_RSS_NONFRAG_IPV4_OTHER,
 138         },
 139         [MLX5_EXPANSION_OUTER_IPV4_UDP] = {
 140                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 141                                                  MLX5_EXPANSION_VXLAN_GPE),
 142                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 143                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 144         },
 145         [MLX5_EXPANSION_OUTER_IPV4_TCP] = {
 146                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 147                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 148         },
 149         [MLX5_EXPANSION_OUTER_IPV6] = {
 150                 .next = RTE_FLOW_EXPAND_RSS_NEXT
 151                         (MLX5_EXPANSION_OUTER_IPV6_UDP,
 152                          MLX5_EXPANSION_OUTER_IPV6_TCP,
 153                          MLX5_EXPANSION_IPV4,
 154                          MLX5_EXPANSION_IPV6),
 155                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 156                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 157                         ETH_RSS_NONFRAG_IPV6_OTHER,
 158         },
 159         [MLX5_EXPANSION_OUTER_IPV6_UDP] = {
 160                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN,
 161                                                  MLX5_EXPANSION_VXLAN_GPE),
 162                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 163                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 164         },
 165         [MLX5_EXPANSION_OUTER_IPV6_TCP] = {
 166                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 167                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 168         },
 169         [MLX5_EXPANSION_VXLAN] = {
 170                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
 171                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
 172         },
 173         [MLX5_EXPANSION_VXLAN_GPE] = {
 174                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
 175                                                  MLX5_EXPANSION_IPV4,
 176                                                  MLX5_EXPANSION_IPV6),
 177                 .type = RTE_FLOW_ITEM_TYPE_VXLAN_GPE,
 178         },
 179         [MLX5_EXPANSION_GRE] = {
 180                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4),
 181                 .type = RTE_FLOW_ITEM_TYPE_GRE,
 182         },
 183         [MLX5_EXPANSION_MPLS] = {
 184                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 185                                                  MLX5_EXPANSION_IPV6),
 186                 .type = RTE_FLOW_ITEM_TYPE_MPLS,
 187         },
 188         [MLX5_EXPANSION_ETH] = {
 189                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 190                                                  MLX5_EXPANSION_IPV6),
 191                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 192         },
 193         [MLX5_EXPANSION_ETH_VLAN] = {
 194                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VLAN),
 195                 .type = RTE_FLOW_ITEM_TYPE_ETH,
 196         },
 197         [MLX5_EXPANSION_VLAN] = {
 198                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
 199                                                  MLX5_EXPANSION_IPV6),
 200                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
 201         },
 202         [MLX5_EXPANSION_IPV4] = {
 203                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4_UDP,
 204                                                  MLX5_EXPANSION_IPV4_TCP),
 205                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
 206                 .rss_types = ETH_RSS_IPV4 | ETH_RSS_FRAG_IPV4 |
 207                         ETH_RSS_NONFRAG_IPV4_OTHER,
 208         },
 209         [MLX5_EXPANSION_IPV4_UDP] = {
 210                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 211                 .rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
 212         },
 213         [MLX5_EXPANSION_IPV4_TCP] = {
 214                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 215                 .rss_types = ETH_RSS_NONFRAG_IPV4_TCP,
 216         },
 217         [MLX5_EXPANSION_IPV6] = {
 218                 .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV6_UDP,
 219                                                  MLX5_EXPANSION_IPV6_TCP),
 220                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
 221                 .rss_types = ETH_RSS_IPV6 | ETH_RSS_FRAG_IPV6 |
 222                         ETH_RSS_NONFRAG_IPV6_OTHER,
 223         },
 224         [MLX5_EXPANSION_IPV6_UDP] = {
 225                 .type = RTE_FLOW_ITEM_TYPE_UDP,
 226                 .rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
 227         },
 228         [MLX5_EXPANSION_IPV6_TCP] = {
 229                 .type = RTE_FLOW_ITEM_TYPE_TCP,
 230                 .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
 231         },
 232 };
 233
 234 static const struct rte_flow_ops mlx5_flow_ops = {
 235         .validate = mlx5_flow_validate,
 236         .create = mlx5_flow_create,
 237         .destroy = mlx5_flow_destroy,
 238         .flush = mlx5_flow_flush,
 239         .isolate = mlx5_flow_isolate,
 240         .query = mlx5_flow_query,
 241         .dev_dump = mlx5_flow_dev_dump,
 242 };
 243
 244 /* Convert FDIR request to Generic flow. */
 245 struct mlx5_fdir {
 246         struct rte_flow_attr attr;
 247         struct rte_flow_item items[4];
 248         struct rte_flow_item_eth l2;
 249         struct rte_flow_item_eth l2_mask;
 250         union {
 251                 struct rte_flow_item_ipv4 ipv4;
 252                 struct rte_flow_item_ipv6 ipv6;
 253         } l3;
 254         union {
 255                 struct rte_flow_item_ipv4 ipv4;
 256                 struct rte_flow_item_ipv6 ipv6;
 257         } l3_mask;
 258         union {
 259                 struct rte_flow_item_udp udp;
 260                 struct rte_flow_item_tcp tcp;
 261         } l4;
 262         union {
 263                 struct rte_flow_item_udp udp;
 264                 struct rte_flow_item_tcp tcp;
 265         } l4_mask;
 266         struct rte_flow_action actions[2];
 267         struct rte_flow_action_queue queue;
 268 };
 269
 270 /* Map of Verbs to Flow priority with 8 Verbs priorities. */
 271 static const uint32_t priority_map_3[][MLX5_PRIORITY_MAP_MAX] = {
 272         { 0, 1, 2 }, { 2, 3, 4 }, { 5, 6, 7 },
 273 };
 274
 275 /* Map of Verbs to Flow priority with 16 Verbs priorities. */
 276 static const uint32_t priority_map_5[][MLX5_PRIORITY_MAP_MAX] = {
 277         { 0, 1, 2 }, { 3, 4, 5 }, { 6, 7, 8 },
 278         { 9, 10, 11 }, { 12, 13, 14 },
 279 };
 280
 281 /* Tunnel information. */
 282 struct mlx5_flow_tunnel_info {
 283         uint64_t tunnel; /**< Tunnel bit (see MLX5_FLOW_*). */
 284         uint32_t ptype; /**< Tunnel Ptype (see RTE_PTYPE_*). */
 285 };
 286
 287 static struct mlx5_flow_tunnel_info tunnels_info[] = {
 288         {
 289                 .tunnel = MLX5_FLOW_LAYER_VXLAN,
 290                 .ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP,
 291         },
 292         {
 293                 .tunnel = MLX5_FLOW_LAYER_GENEVE,
 294                 .ptype = RTE_PTYPE_TUNNEL_GENEVE | RTE_PTYPE_L4_UDP,
 295         },
 296         {
 297                 .tunnel = MLX5_FLOW_LAYER_VXLAN_GPE,
 298                 .ptype = RTE_PTYPE_TUNNEL_VXLAN_GPE | RTE_PTYPE_L4_UDP,
 299         },
 300         {
 301                 .tunnel = MLX5_FLOW_LAYER_GRE,
 302                 .ptype = RTE_PTYPE_TUNNEL_GRE,
 303         },
 304         {
 305                 .tunnel = MLX5_FLOW_LAYER_MPLS | MLX5_FLOW_LAYER_OUTER_L4_UDP,
 306                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_UDP | RTE_PTYPE_L4_UDP,
 307         },
 308         {
 309                 .tunnel = MLX5_FLOW_LAYER_MPLS,
 310                 .ptype = RTE_PTYPE_TUNNEL_MPLS_IN_GRE,
 311         },
 312         {
 313                 .tunnel = MLX5_FLOW_LAYER_NVGRE,
 314                 .ptype = RTE_PTYPE_TUNNEL_NVGRE,
 315         },
 316         {
 317                 .tunnel = MLX5_FLOW_LAYER_IPIP,
 318                 .ptype = RTE_PTYPE_TUNNEL_IP,
 319         },
 320         {
 321                 .tunnel = MLX5_FLOW_LAYER_IPV6_ENCAP,
 322                 .ptype = RTE_PTYPE_TUNNEL_IP,
 323         },
 324         {
 325                 .tunnel = MLX5_FLOW_LAYER_GTP,
 326                 .ptype = RTE_PTYPE_TUNNEL_GTPU,
 327         },
 328 };
 329
 330 /**
 331  * Translate tag ID to register.
 332  *
 333  * @param[in] dev
 334  *   Pointer to the Ethernet device structure.
 335  * @param[in] feature
 336  *   The feature that request the register.
 337  * @param[in] id
 338  *   The request register ID.
 339  * @param[out] error
 340  *   Error description in case of any.
 341  *
 342  * @return
 343  *   The request register on success, a negative errno
 344  *   value otherwise and rte_errno is set.
 345  */
 346 int
 347 mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 348                      enum mlx5_feature_name feature,
 349                      uint32_t id,
 350                      struct rte_flow_error *error)
 351 {
 352         struct mlx5_priv *priv = dev->data->dev_private;
 353         struct mlx5_dev_config *config = &priv->config;
 354         enum modify_reg start_reg;
 355         bool skip_mtr_reg = false;
 356
 357         switch (feature) {
 358         case MLX5_HAIRPIN_RX:
 359                 return REG_B;
 360         case MLX5_HAIRPIN_TX:
 361                 return REG_A;
 362         case MLX5_METADATA_RX:
 363                 switch (config->dv_xmeta_en) {
 364                 case MLX5_XMETA_MODE_LEGACY:
 365                         return REG_B;
 366                 case MLX5_XMETA_MODE_META16:
 367                         return REG_C_0;
 368                 case MLX5_XMETA_MODE_META32:
 369                         return REG_C_1;
 370                 }
 371                 break;
 372         case MLX5_METADATA_TX:
 373                 return REG_A;
 374         case MLX5_METADATA_FDB:
 375                 switch (config->dv_xmeta_en) {
 376                 case MLX5_XMETA_MODE_LEGACY:
 377                         return REG_NONE;
 378                 case MLX5_XMETA_MODE_META16:
 379                         return REG_C_0;
 380                 case MLX5_XMETA_MODE_META32:
 381                         return REG_C_1;
 382                 }
 383                 break;
 384         case MLX5_FLOW_MARK:
 385                 switch (config->dv_xmeta_en) {
 386                 case MLX5_XMETA_MODE_LEGACY:
 387                         return REG_NONE;
 388                 case MLX5_XMETA_MODE_META16:
 389                         return REG_C_1;
 390                 case MLX5_XMETA_MODE_META32:
 391                         return REG_C_0;
 392                 }
 393                 break;
 394         case MLX5_MTR_SFX:
 395                 /*
 396                  * If meter color and flow match share one register, flow match
 397                  * should use the meter color register for match.
 398                  */
 399                 if (priv->mtr_reg_share)
 400                         return priv->mtr_color_reg;
 401                 else
 402                         return priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 403                                REG_C_3;
 404         case MLX5_MTR_COLOR:
 405                 RTE_ASSERT(priv->mtr_color_reg != REG_NONE);
 406                 return priv->mtr_color_reg;
 407         case MLX5_COPY_MARK:
 408                 /*
 409                  * Metadata COPY_MARK register using is in meter suffix sub
 410                  * flow while with meter. It's safe to share the same register.
 411                  */
 412                 return priv->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 413         case MLX5_APP_TAG:
 414                 /*
 415                  * If meter is enable, it will engage the register for color
 416                  * match and flow match. If meter color match is not using the
 417                  * REG_C_2, need to skip the REG_C_x be used by meter color
 418                  * match.
 419                  * If meter is disable, free to use all available registers.
 420                  */
 421                 start_reg = priv->mtr_color_reg != REG_C_2 ? REG_C_2 :
 422                             (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 423                 skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 424                 if (id > (REG_C_7 - start_reg))
 425                         return rte_flow_error_set(error, EINVAL,
 426                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 427                                                   NULL, "invalid tag id");
 428                 if (config->flow_mreg_c[id + start_reg - REG_C_0] == REG_NONE)
 429                         return rte_flow_error_set(error, ENOTSUP,
 430                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 431                                                   NULL, "unsupported tag id");
 432                 /*
 433                  * This case means meter is using the REG_C_x great than 2.
 434                  * Take care not to conflict with meter color REG_C_x.
 435                  * If the available index REG_C_y >= REG_C_x, skip the
 436                  * color register.
 437                  */
 438                 if (skip_mtr_reg && config->flow_mreg_c
 439                     [id + start_reg - REG_C_0] >= priv->mtr_color_reg) {
 440                         if (config->flow_mreg_c
 441                             [id + 1 + start_reg - REG_C_0] != REG_NONE)
 442                                 return config->flow_mreg_c
 443                                                [id + 1 + start_reg - REG_C_0];
 444                         return rte_flow_error_set(error, ENOTSUP,
 445                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 446                                                   NULL, "unsupported tag id");
 447                 }
 448                 return config->flow_mreg_c[id + start_reg - REG_C_0];
 449         }
 450         assert(false);
 451         return rte_flow_error_set(error, EINVAL,
 452                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
 453                                   NULL, "invalid feature name");
 454 }
 455
 456 /**
 457  * Check extensive flow metadata register support.
 458  *
 459  * @param dev
 460  *   Pointer to rte_eth_dev structure.
 461  *
 462  * @return
 463  *   True if device supports extensive flow metadata register, otherwise false.
 464  */
 465 bool
 466 mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
 467 {
 468         struct mlx5_priv *priv = dev->data->dev_private;
 469         struct mlx5_dev_config *config = &priv->config;
 470
 471         /*
 472          * Having available reg_c can be regarded inclusively as supporting
 473          * extensive flow metadata register, which could mean,
 474          * - metadata register copy action by modify header.
 475          * - 16 modify header actions is supported.
 476          * - reg_c's are preserved across different domain (FDB and NIC) on
 477          *   packet loopback by flow lookup miss.
 478          */
 479         return config->flow_mreg_c[2] != REG_NONE;
 480 }
 481
 482 /**
 483  * Discover the maximum number of priority available.
 484  *
 485  * @param[in] dev
 486  *   Pointer to the Ethernet device structure.
 487  *
 488  * @return
 489  *   number of supported flow priority on success, a negative errno
 490  *   value otherwise and rte_errno is set.
 491  */
 492 int
 493 mlx5_flow_discover_priorities(struct rte_eth_dev *dev)
 494 {
 495         struct mlx5_priv *priv = dev->data->dev_private;
 496         struct {
 497                 struct ibv_flow_attr attr;
 498                 struct ibv_flow_spec_eth eth;
 499                 struct ibv_flow_spec_action_drop drop;
 500         } flow_attr = {
 501                 .attr = {
 502                         .num_of_specs = 2,
 503                         .port = (uint8_t)priv->ibv_port,
 504                 },
 505                 .eth = {
 506                         .type = IBV_FLOW_SPEC_ETH,
 507                         .size = sizeof(struct ibv_flow_spec_eth),
 508                 },
 509                 .drop = {
 510                         .size = sizeof(struct ibv_flow_spec_action_drop),
 511                         .type = IBV_FLOW_SPEC_ACTION_DROP,
 512                 },
 513         };
 514         struct ibv_flow *flow;
 515         struct mlx5_hrxq *drop = mlx5_hrxq_drop_new(dev);
 516         uint16_t vprio[] = { 8, 16 };
 517         int i;
 518         int priority = 0;
 519
 520         if (!drop) {
 521                 rte_errno = ENOTSUP;
 522                 return -rte_errno;
 523         }
 524         for (i = 0; i != RTE_DIM(vprio); i++) {
 525                 flow_attr.attr.priority = vprio[i] - 1;
 526                 flow = mlx5_glue->create_flow(drop->qp, &flow_attr.attr);
 527                 if (!flow)
 528                         break;
 529                 claim_zero(mlx5_glue->destroy_flow(flow));
 530                 priority = vprio[i];
 531         }
 532         mlx5_hrxq_drop_release(dev);
 533         switch (priority) {
 534         case 8:
 535                 priority = RTE_DIM(priority_map_3);
 536                 break;
 537         case 16:
 538                 priority = RTE_DIM(priority_map_5);
 539                 break;
 540         default:
 541                 rte_errno = ENOTSUP;
 542                 DRV_LOG(ERR,
 543                         "port %u verbs maximum priority: %d expected 8/16",
 544                         dev->data->port_id, priority);
 545                 return -rte_errno;
 546         }
 547         DRV_LOG(INFO, "port %u flow maximum priority: %d",
 548                 dev->data->port_id, priority);
 549         return priority;
 550 }
 551
 552 /**
 553  * Adjust flow priority based on the highest layer and the request priority.
 554  *
 555  * @param[in] dev
 556  *   Pointer to the Ethernet device structure.
 557  * @param[in] priority
 558  *   The rule base priority.
 559  * @param[in] subpriority
 560  *   The priority based on the items.
 561  *
 562  * @return
 563  *   The new priority.
 564  */
 565 uint32_t mlx5_flow_adjust_priority(struct rte_eth_dev *dev, int32_t priority,
 566                                    uint32_t subpriority)
 567 {
 568         uint32_t res = 0;
 569         struct mlx5_priv *priv = dev->data->dev_private;
 570
 571         switch (priv->config.flow_prio) {
 572         case RTE_DIM(priority_map_3):
 573                 res = priority_map_3[priority][subpriority];
 574                 break;
 575         case RTE_DIM(priority_map_5):
 576                 res = priority_map_5[priority][subpriority];
 577                 break;
 578         }
 579         return  res;
 580 }
 581
 582 /**
 583  * Verify the @p item specifications (spec, last, mask) are compatible with the
 584  * NIC capabilities.
 585  *
 586  * @param[in] item
 587  *   Item specification.
 588  * @param[in] mask
 589  *   @p item->mask or flow default bit-masks.
 590  * @param[in] nic_mask
 591  *   Bit-masks covering supported fields by the NIC to compare with user mask.
 592  * @param[in] size
 593  *   Bit-masks size in bytes.
 594  * @param[out] error
 595  *   Pointer to error structure.
 596  *
 597  * @return
 598  *   0 on success, a negative errno value otherwise and rte_errno is set.
 599  */
 600 int
 601 mlx5_flow_item_acceptable(const struct rte_flow_item *item,
 602                           const uint8_t *mask,
 603                           const uint8_t *nic_mask,
 604                           unsigned int size,
 605                           struct rte_flow_error *error)
 606 {
 607         unsigned int i;
 608
 609         assert(nic_mask);
 610         for (i = 0; i < size; ++i)
 611                 if ((nic_mask[i] | mask[i]) != nic_mask[i])
 612                         return rte_flow_error_set(error, ENOTSUP,
 613                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 614                                                   item,
 615                                                   "mask enables non supported"
 616                                                   " bits");
 617         if (!item->spec && (item->mask || item->last))
 618                 return rte_flow_error_set(error, EINVAL,
 619                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
 620                                           "mask/last without a spec is not"
 621                                           " supported");
 622         if (item->spec && item->last) {
 623                 uint8_t spec[size];
 624                 uint8_t last[size];
 625                 unsigned int i;
 626                 int ret;
 627
 628                 for (i = 0; i < size; ++i) {
 629                         spec[i] = ((const uint8_t *)item->spec)[i] & mask[i];
 630                         last[i] = ((const uint8_t *)item->last)[i] & mask[i];
 631                 }
 632                 ret = memcmp(spec, last, size);
 633                 if (ret != 0)
 634                         return rte_flow_error_set(error, EINVAL,
 635                                                   RTE_FLOW_ERROR_TYPE_ITEM,
 636                                                   item,
 637                                                   "range is not valid");
 638         }
 639         return 0;
 640 }
 641
 642 /**
 643  * Adjust the hash fields according to the @p flow information.
 644  *
 645  * @param[in] dev_flow.
 646  *   Pointer to the mlx5_flow.
 647  * @param[in] tunnel
 648  *   1 when the hash field is for a tunnel item.
 649  * @param[in] layer_types
 650  *   ETH_RSS_* types.
 651  * @param[in] hash_fields
 652  *   Item hash fields.
 653  *
 654  * @return
 655  *   The hash fields that should be used.
 656  */
 657 uint64_t
 658 mlx5_flow_hashfields_adjust(struct mlx5_flow *dev_flow,
 659                             int tunnel __rte_unused, uint64_t layer_types,
 660                             uint64_t hash_fields)
 661 {
 662         struct rte_flow *flow = dev_flow->flow;
 663 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 664         int rss_request_inner = flow->rss.level >= 2;
 665
 666         /* Check RSS hash level for tunnel. */
 667         if (tunnel && rss_request_inner)
 668                 hash_fields |= IBV_RX_HASH_INNER;
 669         else if (tunnel || rss_request_inner)
 670                 return 0;
 671 #endif
 672         /* Check if requested layer matches RSS hash fields. */
 673         if (!(flow->rss.types & layer_types))
 674                 return 0;
 675         return hash_fields;
 676 }
 677
 678 /**
 679  * Lookup and set the ptype in the data Rx part.  A single Ptype can be used,
 680  * if several tunnel rules are used on this queue, the tunnel ptype will be
 681  * cleared.
 682  *
 683  * @param rxq_ctrl
 684  *   Rx queue to update.
 685  */
 686 static void
 687 flow_rxq_tunnel_ptype_update(struct mlx5_rxq_ctrl *rxq_ctrl)
 688 {
 689         unsigned int i;
 690         uint32_t tunnel_ptype = 0;
 691
 692         /* Look up for the ptype to use. */
 693         for (i = 0; i != MLX5_FLOW_TUNNEL; ++i) {
 694                 if (!rxq_ctrl->flow_tunnels_n[i])
 695                         continue;
 696                 if (!tunnel_ptype) {
 697                         tunnel_ptype = tunnels_info[i].ptype;
 698                 } else {
 699                         tunnel_ptype = 0;
 700                         break;
 701                 }
 702         }
 703         rxq_ctrl->rxq.tunnel = tunnel_ptype;
 704 }
 705
 706 /**
 707  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the devive
 708  * flow.
 709  *
 710  * @param[in] dev
 711  *   Pointer to the Ethernet device structure.
 712  * @param[in] dev_flow
 713  *   Pointer to device flow structure.
 714  */
 715 static void
 716 flow_drv_rxq_flags_set(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 717 {
 718         struct mlx5_priv *priv = dev->data->dev_private;
 719         struct rte_flow *flow = dev_flow->flow;
 720         const int mark = !!(dev_flow->actions &
 721                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 722         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 723         unsigned int i;
 724
 725         for (i = 0; i != flow->rss.queue_num; ++i) {
 726                 int idx = (*flow->rss.queue)[i];
 727                 struct mlx5_rxq_ctrl *rxq_ctrl =
 728                         container_of((*priv->rxqs)[idx],
 729                                      struct mlx5_rxq_ctrl, rxq);
 730
 731                 /*
 732                  * To support metadata register copy on Tx loopback,
 733                  * this must be always enabled (metadata may arive
 734                  * from other port - not from local flows only.
 735                  */
 736                 if (priv->config.dv_flow_en &&
 737                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 738                     mlx5_flow_ext_mreg_supported(dev)) {
 739                         rxq_ctrl->rxq.mark = 1;
 740                         rxq_ctrl->flow_mark_n = 1;
 741                 } else if (mark) {
 742                         rxq_ctrl->rxq.mark = 1;
 743                         rxq_ctrl->flow_mark_n++;
 744                 }
 745                 if (tunnel) {
 746                         unsigned int j;
 747
 748                         /* Increase the counter matching the flow. */
 749                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 750                                 if ((tunnels_info[j].tunnel &
 751                                      dev_flow->layers) ==
 752                                     tunnels_info[j].tunnel) {
 753                                         rxq_ctrl->flow_tunnels_n[j]++;
 754                                         break;
 755                                 }
 756                         }
 757                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 758                 }
 759         }
 760 }
 761
 762 /**
 763  * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) for a flow
 764  *
 765  * @param[in] dev
 766  *   Pointer to the Ethernet device structure.
 767  * @param[in] flow
 768  *   Pointer to flow structure.
 769  */
 770 static void
 771 flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
 772 {
 773         struct mlx5_flow *dev_flow;
 774
 775         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 776                 flow_drv_rxq_flags_set(dev, dev_flow);
 777 }
 778
 779 /**
 780  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 781  * device flow if no other flow uses it with the same kind of request.
 782  *
 783  * @param dev
 784  *   Pointer to Ethernet device.
 785  * @param[in] dev_flow
 786  *   Pointer to the device flow.
 787  */
 788 static void
 789 flow_drv_rxq_flags_trim(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow)
 790 {
 791         struct mlx5_priv *priv = dev->data->dev_private;
 792         struct rte_flow *flow = dev_flow->flow;
 793         const int mark = !!(dev_flow->actions &
 794                             (MLX5_FLOW_ACTION_FLAG | MLX5_FLOW_ACTION_MARK));
 795         const int tunnel = !!(dev_flow->layers & MLX5_FLOW_LAYER_TUNNEL);
 796         unsigned int i;
 797
 798         assert(dev->data->dev_started);
 799         for (i = 0; i != flow->rss.queue_num; ++i) {
 800                 int idx = (*flow->rss.queue)[i];
 801                 struct mlx5_rxq_ctrl *rxq_ctrl =
 802                         container_of((*priv->rxqs)[idx],
 803                                      struct mlx5_rxq_ctrl, rxq);
 804
 805                 if (priv->config.dv_flow_en &&
 806                     priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
 807                     mlx5_flow_ext_mreg_supported(dev)) {
 808                         rxq_ctrl->rxq.mark = 1;
 809                         rxq_ctrl->flow_mark_n = 1;
 810                 } else if (mark) {
 811                         rxq_ctrl->flow_mark_n--;
 812                         rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
 813                 }
 814                 if (tunnel) {
 815                         unsigned int j;
 816
 817                         /* Decrease the counter matching the flow. */
 818                         for (j = 0; j != MLX5_FLOW_TUNNEL; ++j) {
 819                                 if ((tunnels_info[j].tunnel &
 820                                      dev_flow->layers) ==
 821                                     tunnels_info[j].tunnel) {
 822                                         rxq_ctrl->flow_tunnels_n[j]--;
 823                                         break;
 824                                 }
 825                         }
 826                         flow_rxq_tunnel_ptype_update(rxq_ctrl);
 827                 }
 828         }
 829 }
 830
 831 /**
 832  * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
 833  * @p flow if no other flow uses it with the same kind of request.
 834  *
 835  * @param dev
 836  *   Pointer to Ethernet device.
 837  * @param[in] flow
 838  *   Pointer to the flow.
 839  */
 840 static void
 841 flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
 842 {
 843         struct mlx5_flow *dev_flow;
 844
 845         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
 846                 flow_drv_rxq_flags_trim(dev, dev_flow);
 847 }
 848
 849 /**
 850  * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
 851  *
 852  * @param dev
 853  *   Pointer to Ethernet device.
 854  */
 855 static void
 856 flow_rxq_flags_clear(struct rte_eth_dev *dev)
 857 {
 858         struct mlx5_priv *priv = dev->data->dev_private;
 859         unsigned int i;
 860
 861         for (i = 0; i != priv->rxqs_n; ++i) {
 862                 struct mlx5_rxq_ctrl *rxq_ctrl;
 863                 unsigned int j;
 864
 865                 if (!(*priv->rxqs)[i])
 866                         continue;
 867                 rxq_ctrl = container_of((*priv->rxqs)[i],
 868                                         struct mlx5_rxq_ctrl, rxq);
 869                 rxq_ctrl->flow_mark_n = 0;
 870                 rxq_ctrl->rxq.mark = 0;
 871                 for (j = 0; j != MLX5_FLOW_TUNNEL; ++j)
 872                         rxq_ctrl->flow_tunnels_n[j] = 0;
 873                 rxq_ctrl->rxq.tunnel = 0;
 874         }
 875 }
 876
 877 /*
 878  * return a pointer to the desired action in the list of actions.
 879  *
 880  * @param[in] actions
 881  *   The list of actions to search the action in.
 882  * @param[in] action
 883  *   The action to find.
 884  *
 885  * @return
 886  *   Pointer to the action in the list, if found. NULL otherwise.
 887  */
 888 const struct rte_flow_action *
 889 mlx5_flow_find_action(const struct rte_flow_action *actions,
 890                       enum rte_flow_action_type action)
 891 {
 892         if (actions == NULL)
 893                 return NULL;
 894         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++)
 895                 if (actions->type == action)
 896                         return actions;
 897         return NULL;
 898 }
 899
 900 /*
 901  * Validate the flag action.
 902  *
 903  * @param[in] action_flags
 904  *   Bit-fields that holds the actions detected until now.
 905  * @param[in] attr
 906  *   Attributes of flow that includes this action.
 907  * @param[out] error
 908  *   Pointer to error structure.
 909  *
 910  * @return
 911  *   0 on success, a negative errno value otherwise and rte_errno is set.
 912  */
 913 int
 914 mlx5_flow_validate_action_flag(uint64_t action_flags,
 915                                const struct rte_flow_attr *attr,
 916                                struct rte_flow_error *error)
 917 {
 918         if (action_flags & MLX5_FLOW_ACTION_MARK)
 919                 return rte_flow_error_set(error, EINVAL,
 920                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 921                                           "can't mark and flag in same flow");
 922         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 923                 return rte_flow_error_set(error, EINVAL,
 924                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 925                                           "can't have 2 flag"
 926                                           " actions in same flow");
 927         if (attr->egress)
 928                 return rte_flow_error_set(error, ENOTSUP,
 929                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 930                                           "flag action not supported for "
 931                                           "egress");
 932         return 0;
 933 }
 934
 935 /*
 936  * Validate the mark action.
 937  *
 938  * @param[in] action
 939  *   Pointer to the queue action.
 940  * @param[in] action_flags
 941  *   Bit-fields that holds the actions detected until now.
 942  * @param[in] attr
 943  *   Attributes of flow that includes this action.
 944  * @param[out] error
 945  *   Pointer to error structure.
 946  *
 947  * @return
 948  *   0 on success, a negative errno value otherwise and rte_errno is set.
 949  */
 950 int
 951 mlx5_flow_validate_action_mark(const struct rte_flow_action *action,
 952                                uint64_t action_flags,
 953                                const struct rte_flow_attr *attr,
 954                                struct rte_flow_error *error)
 955 {
 956         const struct rte_flow_action_mark *mark = action->conf;
 957
 958         if (!mark)
 959                 return rte_flow_error_set(error, EINVAL,
 960                                           RTE_FLOW_ERROR_TYPE_ACTION,
 961                                           action,
 962                                           "configuration cannot be null");
 963         if (mark->id >= MLX5_FLOW_MARK_MAX)
 964                 return rte_flow_error_set(error, EINVAL,
 965                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
 966                                           &mark->id,
 967                                           "mark id must in 0 <= id < "
 968                                           RTE_STR(MLX5_FLOW_MARK_MAX));
 969         if (action_flags & MLX5_FLOW_ACTION_FLAG)
 970                 return rte_flow_error_set(error, EINVAL,
 971                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 972                                           "can't flag and mark in same flow");
 973         if (action_flags & MLX5_FLOW_ACTION_MARK)
 974                 return rte_flow_error_set(error, EINVAL,
 975                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 976                                           "can't have 2 mark actions in same"
 977                                           " flow");
 978         if (attr->egress)
 979                 return rte_flow_error_set(error, ENOTSUP,
 980                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
 981                                           "mark action not supported for "
 982                                           "egress");
 983         return 0;
 984 }
 985
 986 /*
 987  * Validate the drop action.
 988  *
 989  * @param[in] action_flags
 990  *   Bit-fields that holds the actions detected until now.
 991  * @param[in] attr
 992  *   Attributes of flow that includes this action.
 993  * @param[out] error
 994  *   Pointer to error structure.
 995  *
 996  * @return
 997  *   0 on success, a negative errno value otherwise and rte_errno is set.
 998  */
 999 int
1000 mlx5_flow_validate_action_drop(uint64_t action_flags __rte_unused,
1001                                const struct rte_flow_attr *attr,
1002                                struct rte_flow_error *error)
1003 {
1004         if (attr->egress)
1005                 return rte_flow_error_set(error, ENOTSUP,
1006                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1007                                           "drop action not supported for "
1008                                           "egress");
1009         return 0;
1010 }
1011
1012 /*
1013  * Validate the queue action.
1014  *
1015  * @param[in] action
1016  *   Pointer to the queue action.
1017  * @param[in] action_flags
1018  *   Bit-fields that holds the actions detected until now.
1019  * @param[in] dev
1020  *   Pointer to the Ethernet device structure.
1021  * @param[in] attr
1022  *   Attributes of flow that includes this action.
1023  * @param[out] error
1024  *   Pointer to error structure.
1025  *
1026  * @return
1027  *   0 on success, a negative errno value otherwise and rte_errno is set.
1028  */
1029 int
1030 mlx5_flow_validate_action_queue(const struct rte_flow_action *action,
1031                                 uint64_t action_flags,
1032                                 struct rte_eth_dev *dev,
1033                                 const struct rte_flow_attr *attr,
1034                                 struct rte_flow_error *error)
1035 {
1036         struct mlx5_priv *priv = dev->data->dev_private;
1037         const struct rte_flow_action_queue *queue = action->conf;
1038
1039         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1040                 return rte_flow_error_set(error, EINVAL,
1041                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1042                                           "can't have 2 fate actions in"
1043                                           " same flow");
1044         if (!priv->rxqs_n)
1045                 return rte_flow_error_set(error, EINVAL,
1046                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1047                                           NULL, "No Rx queues configured");
1048         if (queue->index >= priv->rxqs_n)
1049                 return rte_flow_error_set(error, EINVAL,
1050                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1051                                           &queue->index,
1052                                           "queue index out of range");
1053         if (!(*priv->rxqs)[queue->index])
1054                 return rte_flow_error_set(error, EINVAL,
1055                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1056                                           &queue->index,
1057                                           "queue is not configured");
1058         if (attr->egress)
1059                 return rte_flow_error_set(error, ENOTSUP,
1060                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1061                                           "queue action not supported for "
1062                                           "egress");
1063         return 0;
1064 }
1065
1066 /*
1067  * Validate the rss action.
1068  *
1069  * @param[in] action
1070  *   Pointer to the queue action.
1071  * @param[in] action_flags
1072  *   Bit-fields that holds the actions detected until now.
1073  * @param[in] dev
1074  *   Pointer to the Ethernet device structure.
1075  * @param[in] attr
1076  *   Attributes of flow that includes this action.
1077  * @param[in] item_flags
1078  *   Items that were detected.
1079  * @param[out] error
1080  *   Pointer to error structure.
1081  *
1082  * @return
1083  *   0 on success, a negative errno value otherwise and rte_errno is set.
1084  */
1085 int
1086 mlx5_flow_validate_action_rss(const struct rte_flow_action *action,
1087                               uint64_t action_flags,
1088                               struct rte_eth_dev *dev,
1089                               const struct rte_flow_attr *attr,
1090                               uint64_t item_flags,
1091                               struct rte_flow_error *error)
1092 {
1093         struct mlx5_priv *priv = dev->data->dev_private;
1094         const struct rte_flow_action_rss *rss = action->conf;
1095         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1096         unsigned int i;
1097
1098         if (action_flags & MLX5_FLOW_FATE_ACTIONS)
1099                 return rte_flow_error_set(error, EINVAL,
1100                                           RTE_FLOW_ERROR_TYPE_ACTION, NULL,
1101                                           "can't have 2 fate actions"
1102                                           " in same flow");
1103         if (rss->func != RTE_ETH_HASH_FUNCTION_DEFAULT &&
1104             rss->func != RTE_ETH_HASH_FUNCTION_TOEPLITZ)
1105                 return rte_flow_error_set(error, ENOTSUP,
1106                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1107                                           &rss->func,
1108                                           "RSS hash function not supported");
1109 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
1110         if (rss->level > 2)
1111 #else
1112         if (rss->level > 1)
1113 #endif
1114                 return rte_flow_error_set(error, ENOTSUP,
1115                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1116                                           &rss->level,
1117                                           "tunnel RSS is not supported");
1118         /* allow RSS key_len 0 in case of NULL (default) RSS key. */
1119         if (rss->key_len == 0 && rss->key != NULL)
1120                 return rte_flow_error_set(error, ENOTSUP,
1121                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1122                                           &rss->key_len,
1123                                           "RSS hash key length 0");
1124         if (rss->key_len > 0 && rss->key_len < MLX5_RSS_HASH_KEY_LEN)
1125                 return rte_flow_error_set(error, ENOTSUP,
1126                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1127                                           &rss->key_len,
1128                                           "RSS hash key too small");
1129         if (rss->key_len > MLX5_RSS_HASH_KEY_LEN)
1130                 return rte_flow_error_set(error, ENOTSUP,
1131                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1132                                           &rss->key_len,
1133                                           "RSS hash key too large");
1134         if (rss->queue_num > priv->config.ind_table_max_size)
1135                 return rte_flow_error_set(error, ENOTSUP,
1136                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1137                                           &rss->queue_num,
1138                                           "number of queues too large");
1139         if (rss->types & MLX5_RSS_HF_MASK)
1140                 return rte_flow_error_set(error, ENOTSUP,
1141                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1142                                           &rss->types,
1143                                           "some RSS protocols are not"
1144                                           " supported");
1145         if ((rss->types & (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY)) &&
1146             !(rss->types & ETH_RSS_IP))
1147                 return rte_flow_error_set(error, EINVAL,
1148                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1149                                           "L3 partial RSS requested but L3 RSS"
1150                                           " type not specified");
1151         if ((rss->types & (ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)) &&
1152             !(rss->types & (ETH_RSS_UDP | ETH_RSS_TCP)))
1153                 return rte_flow_error_set(error, EINVAL,
1154                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1155                                           "L4 partial RSS requested but L4 RSS"
1156                                           " type not specified");
1157         if (!priv->rxqs_n)
1158                 return rte_flow_error_set(error, EINVAL,
1159                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1160                                           NULL, "No Rx queues configured");
1161         if (!rss->queue_num)
1162                 return rte_flow_error_set(error, EINVAL,
1163                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1164                                           NULL, "No queues configured");
1165         for (i = 0; i != rss->queue_num; ++i) {
1166                 if (rss->queue[i] >= priv->rxqs_n)
1167                         return rte_flow_error_set
1168                                 (error, EINVAL,
1169                                  RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1170                                  &rss->queue[i], "queue index out of range");
1171                 if (!(*priv->rxqs)[rss->queue[i]])
1172                         return rte_flow_error_set
1173                                 (error, EINVAL, RTE_FLOW_ERROR_TYPE_ACTION_CONF,
1174                                  &rss->queue[i], "queue is not configured");
1175         }
1176         if (attr->egress)
1177                 return rte_flow_error_set(error, ENOTSUP,
1178                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1179                                           "rss action not supported for "
1180                                           "egress");
1181         if (rss->level > 1 &&  !tunnel)
1182                 return rte_flow_error_set(error, EINVAL,
1183                                           RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
1184                                           "inner RSS is not supported for "
1185                                           "non-tunnel flows");
1186         return 0;
1187 }
1188
1189 /*
1190  * Validate the count action.
1191  *
1192  * @param[in] dev
1193  *   Pointer to the Ethernet device structure.
1194  * @param[in] attr
1195  *   Attributes of flow that includes this action.
1196  * @param[out] error
1197  *   Pointer to error structure.
1198  *
1199  * @return
1200  *   0 on success, a negative errno value otherwise and rte_errno is set.
1201  */
1202 int
1203 mlx5_flow_validate_action_count(struct rte_eth_dev *dev __rte_unused,
1204                                 const struct rte_flow_attr *attr,
1205                                 struct rte_flow_error *error)
1206 {
1207         if (attr->egress)
1208                 return rte_flow_error_set(error, ENOTSUP,
1209                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1210                                           "count action not supported for "
1211                                           "egress");
1212         return 0;
1213 }
1214
1215 /**
1216  * Verify the @p attributes will be correctly understood by the NIC and store
1217  * them in the @p flow if everything is correct.
1218  *
1219  * @param[in] dev
1220  *   Pointer to the Ethernet device structure.
1221  * @param[in] attributes
1222  *   Pointer to flow attributes
1223  * @param[out] error
1224  *   Pointer to error structure.
1225  *
1226  * @return
1227  *   0 on success, a negative errno value otherwise and rte_errno is set.
1228  */
1229 int
1230 mlx5_flow_validate_attributes(struct rte_eth_dev *dev,
1231                               const struct rte_flow_attr *attributes,
1232                               struct rte_flow_error *error)
1233 {
1234         struct mlx5_priv *priv = dev->data->dev_private;
1235         uint32_t priority_max = priv->config.flow_prio - 1;
1236
1237         if (attributes->group)
1238                 return rte_flow_error_set(error, ENOTSUP,
1239                                           RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
1240                                           NULL, "groups is not supported");
1241         if (attributes->priority != MLX5_FLOW_PRIO_RSVD &&
1242             attributes->priority >= priority_max)
1243                 return rte_flow_error_set(error, ENOTSUP,
1244                                           RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
1245                                           NULL, "priority out of range");
1246         if (attributes->egress)
1247                 return rte_flow_error_set(error, ENOTSUP,
1248                                           RTE_FLOW_ERROR_TYPE_ATTR_EGRESS, NULL,
1249                                           "egress is not supported");
1250         if (attributes->transfer && !priv->config.dv_esw_en)
1251                 return rte_flow_error_set(error, ENOTSUP,
1252                                           RTE_FLOW_ERROR_TYPE_ATTR_TRANSFER,
1253                                           NULL, "transfer is not supported");
1254         if (!attributes->ingress)
1255                 return rte_flow_error_set(error, EINVAL,
1256                                           RTE_FLOW_ERROR_TYPE_ATTR_INGRESS,
1257                                           NULL,
1258                                           "ingress attribute is mandatory");
1259         return 0;
1260 }
1261
1262 /**
1263  * Validate ICMP6 item.
1264  *
1265  * @param[in] item
1266  *   Item specification.
1267  * @param[in] item_flags
1268  *   Bit-fields that holds the items detected until now.
1269  * @param[out] error
1270  *   Pointer to error structure.
1271  *
1272  * @return
1273  *   0 on success, a negative errno value otherwise and rte_errno is set.
1274  */
1275 int
1276 mlx5_flow_validate_item_icmp6(const struct rte_flow_item *item,
1277                                uint64_t item_flags,
1278                                uint8_t target_protocol,
1279                                struct rte_flow_error *error)
1280 {
1281         const struct rte_flow_item_icmp6 *mask = item->mask;
1282         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1283         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
1284                                       MLX5_FLOW_LAYER_OUTER_L3_IPV6;
1285         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1286                                       MLX5_FLOW_LAYER_OUTER_L4;
1287         int ret;
1288
1289         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMPV6)
1290                 return rte_flow_error_set(error, EINVAL,
1291                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1292                                           "protocol filtering not compatible"
1293                                           " with ICMP6 layer");
1294         if (!(item_flags & l3m))
1295                 return rte_flow_error_set(error, EINVAL,
1296                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1297                                           "IPv6 is mandatory to filter on"
1298                                           " ICMP6");
1299         if (item_flags & l4m)
1300                 return rte_flow_error_set(error, EINVAL,
1301                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1302                                           "multiple L4 layers not supported");
1303         if (!mask)
1304                 mask = &rte_flow_item_icmp6_mask;
1305         ret = mlx5_flow_item_acceptable
1306                 (item, (const uint8_t *)mask,
1307                  (const uint8_t *)&rte_flow_item_icmp6_mask,
1308                  sizeof(struct rte_flow_item_icmp6), error);
1309         if (ret < 0)
1310                 return ret;
1311         return 0;
1312 }
1313
1314 /**
1315  * Validate ICMP item.
1316  *
1317  * @param[in] item
1318  *   Item specification.
1319  * @param[in] item_flags
1320  *   Bit-fields that holds the items detected until now.
1321  * @param[out] error
1322  *   Pointer to error structure.
1323  *
1324  * @return
1325  *   0 on success, a negative errno value otherwise and rte_errno is set.
1326  */
1327 int
1328 mlx5_flow_validate_item_icmp(const struct rte_flow_item *item,
1329                              uint64_t item_flags,
1330                              uint8_t target_protocol,
1331                              struct rte_flow_error *error)
1332 {
1333         const struct rte_flow_item_icmp *mask = item->mask;
1334         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1335         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
1336                                       MLX5_FLOW_LAYER_OUTER_L3_IPV4;
1337         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1338                                       MLX5_FLOW_LAYER_OUTER_L4;
1339         int ret;
1340
1341         if (target_protocol != 0xFF && target_protocol != IPPROTO_ICMP)
1342                 return rte_flow_error_set(error, EINVAL,
1343                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1344                                           "protocol filtering not compatible"
1345                                           " with ICMP layer");
1346         if (!(item_flags & l3m))
1347                 return rte_flow_error_set(error, EINVAL,
1348                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1349                                           "IPv4 is mandatory to filter"
1350                                           " on ICMP");
1351         if (item_flags & l4m)
1352                 return rte_flow_error_set(error, EINVAL,
1353                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1354                                           "multiple L4 layers not supported");
1355         if (!mask)
1356                 mask = &rte_flow_item_icmp_mask;
1357         ret = mlx5_flow_item_acceptable
1358                 (item, (const uint8_t *)mask,
1359                  (const uint8_t *)&rte_flow_item_icmp_mask,
1360                  sizeof(struct rte_flow_item_icmp), error);
1361         if (ret < 0)
1362                 return ret;
1363         return 0;
1364 }
1365
1366 /**
1367  * Validate Ethernet item.
1368  *
1369  * @param[in] item
1370  *   Item specification.
1371  * @param[in] item_flags
1372  *   Bit-fields that holds the items detected until now.
1373  * @param[out] error
1374  *   Pointer to error structure.
1375  *
1376  * @return
1377  *   0 on success, a negative errno value otherwise and rte_errno is set.
1378  */
1379 int
1380 mlx5_flow_validate_item_eth(const struct rte_flow_item *item,
1381                             uint64_t item_flags,
1382                             struct rte_flow_error *error)
1383 {
1384         const struct rte_flow_item_eth *mask = item->mask;
1385         const struct rte_flow_item_eth nic_mask = {
1386                 .dst.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1387                 .src.addr_bytes = "\xff\xff\xff\xff\xff\xff",
1388                 .type = RTE_BE16(0xffff),
1389         };
1390         int ret;
1391         int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1392         const uint64_t ethm = tunnel ? MLX5_FLOW_LAYER_INNER_L2 :
1393                                        MLX5_FLOW_LAYER_OUTER_L2;
1394
1395         if (item_flags & ethm)
1396                 return rte_flow_error_set(error, ENOTSUP,
1397                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1398                                           "multiple L2 layers not supported");
1399         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_L3)) ||
1400             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_L3)))
1401                 return rte_flow_error_set(error, EINVAL,
1402                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1403                                           "L2 layer should not follow "
1404                                           "L3 layers");
1405         if ((!tunnel && (item_flags & MLX5_FLOW_LAYER_OUTER_VLAN)) ||
1406             (tunnel && (item_flags & MLX5_FLOW_LAYER_INNER_VLAN)))
1407                 return rte_flow_error_set(error, EINVAL,
1408                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1409                                           "L2 layer should not follow VLAN");
1410         if (!mask)
1411                 mask = &rte_flow_item_eth_mask;
1412         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1413                                         (const uint8_t *)&nic_mask,
1414                                         sizeof(struct rte_flow_item_eth),
1415                                         error);
1416         return ret;
1417 }
1418
1419 /**
1420  * Validate VLAN item.
1421  *
1422  * @param[in] item
1423  *   Item specification.
1424  * @param[in] item_flags
1425  *   Bit-fields that holds the items detected until now.
1426  * @param[in] dev
1427  *   Ethernet device flow is being created on.
1428  * @param[out] error
1429  *   Pointer to error structure.
1430  *
1431  * @return
1432  *   0 on success, a negative errno value otherwise and rte_errno is set.
1433  */
1434 int
1435 mlx5_flow_validate_item_vlan(const struct rte_flow_item *item,
1436                              uint64_t item_flags,
1437                              struct rte_eth_dev *dev,
1438                              struct rte_flow_error *error)
1439 {
1440         const struct rte_flow_item_vlan *spec = item->spec;
1441         const struct rte_flow_item_vlan *mask = item->mask;
1442         const struct rte_flow_item_vlan nic_mask = {
1443                 .tci = RTE_BE16(UINT16_MAX),
1444                 .inner_type = RTE_BE16(UINT16_MAX),
1445         };
1446         uint16_t vlan_tag = 0;
1447         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1448         int ret;
1449         const uint64_t l34m = tunnel ? (MLX5_FLOW_LAYER_INNER_L3 |
1450                                         MLX5_FLOW_LAYER_INNER_L4) :
1451                                        (MLX5_FLOW_LAYER_OUTER_L3 |
1452                                         MLX5_FLOW_LAYER_OUTER_L4);
1453         const uint64_t vlanm = tunnel ? MLX5_FLOW_LAYER_INNER_VLAN :
1454                                         MLX5_FLOW_LAYER_OUTER_VLAN;
1455
1456         if (item_flags & vlanm)
1457                 return rte_flow_error_set(error, EINVAL,
1458                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1459                                           "multiple VLAN layers not supported");
1460         else if ((item_flags & l34m) != 0)
1461                 return rte_flow_error_set(error, EINVAL,
1462                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1463                                           "VLAN cannot follow L3/L4 layer");
1464         if (!mask)
1465                 mask = &rte_flow_item_vlan_mask;
1466         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1467                                         (const uint8_t *)&nic_mask,
1468                                         sizeof(struct rte_flow_item_vlan),
1469                                         error);
1470         if (ret)
1471                 return ret;
1472         if (!tunnel && mask->tci != RTE_BE16(0x0fff)) {
1473                 struct mlx5_priv *priv = dev->data->dev_private;
1474
1475                 if (priv->vmwa_context) {
1476                         /*
1477                          * Non-NULL context means we have a virtual machine
1478                          * and SR-IOV enabled, we have to create VLAN interface
1479                          * to make hypervisor to setup E-Switch vport
1480                          * context correctly. We avoid creating the multiple
1481                          * VLAN interfaces, so we cannot support VLAN tag mask.
1482                          */
1483                         return rte_flow_error_set(error, EINVAL,
1484                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1485                                                   item,
1486                                                   "VLAN tag mask is not"
1487                                                   " supported in virtual"
1488                                                   " environment");
1489                 }
1490         }
1491         if (spec) {
1492                 vlan_tag = spec->tci;
1493                 vlan_tag &= mask->tci;
1494         }
1495         /*
1496          * From verbs perspective an empty VLAN is equivalent
1497          * to a packet without VLAN layer.
1498          */
1499         if (!vlan_tag)
1500                 return rte_flow_error_set(error, EINVAL,
1501                                           RTE_FLOW_ERROR_TYPE_ITEM_SPEC,
1502                                           item->spec,
1503                                           "VLAN cannot be empty");
1504         return 0;
1505 }
1506
1507 /**
1508  * Validate IPV4 item.
1509  *
1510  * @param[in] item
1511  *   Item specification.
1512  * @param[in] item_flags
1513  *   Bit-fields that holds the items detected until now.
1514  * @param[in] acc_mask
1515  *   Acceptable mask, if NULL default internal default mask
1516  *   will be used to check whether item fields are supported.
1517  * @param[out] error
1518  *   Pointer to error structure.
1519  *
1520  * @return
1521  *   0 on success, a negative errno value otherwise and rte_errno is set.
1522  */
1523 int
1524 mlx5_flow_validate_item_ipv4(const struct rte_flow_item *item,
1525                              uint64_t item_flags,
1526                              uint64_t last_item,
1527                              uint16_t ether_type,
1528                              const struct rte_flow_item_ipv4 *acc_mask,
1529                              struct rte_flow_error *error)
1530 {
1531         const struct rte_flow_item_ipv4 *mask = item->mask;
1532         const struct rte_flow_item_ipv4 *spec = item->spec;
1533         const struct rte_flow_item_ipv4 nic_mask = {
1534                 .hdr = {
1535                         .src_addr = RTE_BE32(0xffffffff),
1536                         .dst_addr = RTE_BE32(0xffffffff),
1537                         .type_of_service = 0xff,
1538                         .next_proto_id = 0xff,
1539                 },
1540         };
1541         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1542         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1543                                       MLX5_FLOW_LAYER_OUTER_L3;
1544         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1545                                       MLX5_FLOW_LAYER_OUTER_L4;
1546         int ret;
1547         uint8_t next_proto = 0xFF;
1548         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1549                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1550                                   MLX5_FLOW_LAYER_INNER_VLAN);
1551
1552         if ((last_item & l2_vlan) && ether_type &&
1553             ether_type != RTE_ETHER_TYPE_IPV4)
1554                 return rte_flow_error_set(error, EINVAL,
1555                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1556                                           "IPv4 cannot follow L2/VLAN layer "
1557                                           "which ether type is not IPv4");
1558         if (item_flags & MLX5_FLOW_LAYER_IPIP) {
1559                 if (mask && spec)
1560                         next_proto = mask->hdr.next_proto_id &
1561                                      spec->hdr.next_proto_id;
1562                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1563                         return rte_flow_error_set(error, EINVAL,
1564                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1565                                                   item,
1566                                                   "multiple tunnel "
1567                                                   "not supported");
1568         }
1569         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP)
1570                 return rte_flow_error_set(error, EINVAL,
1571                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1572                                           "wrong tunnel type - IPv6 specified "
1573                                           "but IPv4 item provided");
1574         if (item_flags & l3m)
1575                 return rte_flow_error_set(error, ENOTSUP,
1576                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1577                                           "multiple L3 layers not supported");
1578         else if (item_flags & l4m)
1579                 return rte_flow_error_set(error, EINVAL,
1580                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1581                                           "L3 cannot follow an L4 layer.");
1582         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1583                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1584                 return rte_flow_error_set(error, EINVAL,
1585                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1586                                           "L3 cannot follow an NVGRE layer.");
1587         if (!mask)
1588                 mask = &rte_flow_item_ipv4_mask;
1589         else if (mask->hdr.next_proto_id != 0 &&
1590                  mask->hdr.next_proto_id != 0xff)
1591                 return rte_flow_error_set(error, EINVAL,
1592                                           RTE_FLOW_ERROR_TYPE_ITEM_MASK, mask,
1593                                           "partial mask is not supported"
1594                                           " for protocol");
1595         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1596                                         acc_mask ? (const uint8_t *)acc_mask
1597                                                  : (const uint8_t *)&nic_mask,
1598                                         sizeof(struct rte_flow_item_ipv4),
1599                                         error);
1600         if (ret < 0)
1601                 return ret;
1602         return 0;
1603 }
1604
1605 /**
1606  * Validate IPV6 item.
1607  *
1608  * @param[in] item
1609  *   Item specification.
1610  * @param[in] item_flags
1611  *   Bit-fields that holds the items detected until now.
1612  * @param[in] acc_mask
1613  *   Acceptable mask, if NULL default internal default mask
1614  *   will be used to check whether item fields are supported.
1615  * @param[out] error
1616  *   Pointer to error structure.
1617  *
1618  * @return
1619  *   0 on success, a negative errno value otherwise and rte_errno is set.
1620  */
1621 int
1622 mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
1623                              uint64_t item_flags,
1624                              uint64_t last_item,
1625                              uint16_t ether_type,
1626                              const struct rte_flow_item_ipv6 *acc_mask,
1627                              struct rte_flow_error *error)
1628 {
1629         const struct rte_flow_item_ipv6 *mask = item->mask;
1630         const struct rte_flow_item_ipv6 *spec = item->spec;
1631         const struct rte_flow_item_ipv6 nic_mask = {
1632                 .hdr = {
1633                         .src_addr =
1634                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1635                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1636                         .dst_addr =
1637                                 "\xff\xff\xff\xff\xff\xff\xff\xff"
1638                                 "\xff\xff\xff\xff\xff\xff\xff\xff",
1639                         .vtc_flow = RTE_BE32(0xffffffff),
1640                         .proto = 0xff,
1641                         .hop_limits = 0xff,
1642                 },
1643         };
1644         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1645         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1646                                       MLX5_FLOW_LAYER_OUTER_L3;
1647         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1648                                       MLX5_FLOW_LAYER_OUTER_L4;
1649         int ret;
1650         uint8_t next_proto = 0xFF;
1651         const uint64_t l2_vlan = (MLX5_FLOW_LAYER_L2 |
1652                                   MLX5_FLOW_LAYER_OUTER_VLAN |
1653                                   MLX5_FLOW_LAYER_INNER_VLAN);
1654
1655         if ((last_item & l2_vlan) && ether_type &&
1656             ether_type != RTE_ETHER_TYPE_IPV6)
1657                 return rte_flow_error_set(error, EINVAL,
1658                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1659                                           "IPv6 cannot follow L2/VLAN layer "
1660                                           "which ether type is not IPv6");
1661         if (item_flags & MLX5_FLOW_LAYER_IPV6_ENCAP) {
1662                 if (mask && spec)
1663                         next_proto = mask->hdr.proto & spec->hdr.proto;
1664                 if (next_proto == IPPROTO_IPIP || next_proto == IPPROTO_IPV6)
1665                         return rte_flow_error_set(error, EINVAL,
1666                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1667                                                   item,
1668                                                   "multiple tunnel "
1669                                                   "not supported");
1670         }
1671         if (item_flags & MLX5_FLOW_LAYER_IPIP)
1672                 return rte_flow_error_set(error, EINVAL,
1673                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1674                                           "wrong tunnel type - IPv4 specified "
1675                                           "but IPv6 item provided");
1676         if (item_flags & l3m)
1677                 return rte_flow_error_set(error, ENOTSUP,
1678                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1679                                           "multiple L3 layers not supported");
1680         else if (item_flags & l4m)
1681                 return rte_flow_error_set(error, EINVAL,
1682                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1683                                           "L3 cannot follow an L4 layer.");
1684         else if ((item_flags & MLX5_FLOW_LAYER_NVGRE) &&
1685                   !(item_flags & MLX5_FLOW_LAYER_INNER_L2))
1686                 return rte_flow_error_set(error, EINVAL,
1687                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1688                                           "L3 cannot follow an NVGRE layer.");
1689         if (!mask)
1690                 mask = &rte_flow_item_ipv6_mask;
1691         ret = mlx5_flow_item_acceptable(item, (const uint8_t *)mask,
1692                                         acc_mask ? (const uint8_t *)acc_mask
1693                                                  : (const uint8_t *)&nic_mask,
1694                                         sizeof(struct rte_flow_item_ipv6),
1695                                         error);
1696         if (ret < 0)
1697                 return ret;
1698         return 0;
1699 }
1700
1701 /**
1702  * Validate UDP item.
1703  *
1704  * @param[in] item
1705  *   Item specification.
1706  * @param[in] item_flags
1707  *   Bit-fields that holds the items detected until now.
1708  * @param[in] target_protocol
1709  *   The next protocol in the previous item.
1710  * @param[in] flow_mask
1711  *   mlx5 flow-specific (DV, verbs, etc.) supported header fields mask.
1712  * @param[out] error
1713  *   Pointer to error structure.
1714  *
1715  * @return
1716  *   0 on success, a negative errno value otherwise and rte_errno is set.
1717  */
1718 int
1719 mlx5_flow_validate_item_udp(const struct rte_flow_item *item,
1720                             uint64_t item_flags,
1721                             uint8_t target_protocol,
1722                             struct rte_flow_error *error)
1723 {
1724         const struct rte_flow_item_udp *mask = item->mask;
1725         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1726         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1727                                       MLX5_FLOW_LAYER_OUTER_L3;
1728         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1729                                       MLX5_FLOW_LAYER_OUTER_L4;
1730         int ret;
1731
1732         if (target_protocol != 0xff && target_protocol != IPPROTO_UDP)
1733                 return rte_flow_error_set(error, EINVAL,
1734                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1735                                           "protocol filtering not compatible"
1736                                           " with UDP layer");
1737         if (!(item_flags & l3m))
1738                 return rte_flow_error_set(error, EINVAL,
1739                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1740                                           "L3 is mandatory to filter on L4");
1741         if (item_flags & l4m)
1742                 return rte_flow_error_set(error, EINVAL,
1743                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1744                                           "multiple L4 layers not supported");
1745         if (!mask)
1746                 mask = &rte_flow_item_udp_mask;
1747         ret = mlx5_flow_item_acceptable
1748                 (item, (const uint8_t *)mask,
1749                  (const uint8_t *)&rte_flow_item_udp_mask,
1750                  sizeof(struct rte_flow_item_udp), error);
1751         if (ret < 0)
1752                 return ret;
1753         return 0;
1754 }
1755
1756 /**
1757  * Validate TCP item.
1758  *
1759  * @param[in] item
1760  *   Item specification.
1761  * @param[in] item_flags
1762  *   Bit-fields that holds the items detected until now.
1763  * @param[in] target_protocol
1764  *   The next protocol in the previous item.
1765  * @param[out] error
1766  *   Pointer to error structure.
1767  *
1768  * @return
1769  *   0 on success, a negative errno value otherwise and rte_errno is set.
1770  */
1771 int
1772 mlx5_flow_validate_item_tcp(const struct rte_flow_item *item,
1773                             uint64_t item_flags,
1774                             uint8_t target_protocol,
1775                             const struct rte_flow_item_tcp *flow_mask,
1776                             struct rte_flow_error *error)
1777 {
1778         const struct rte_flow_item_tcp *mask = item->mask;
1779         const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
1780         const uint64_t l3m = tunnel ? MLX5_FLOW_LAYER_INNER_L3 :
1781                                       MLX5_FLOW_LAYER_OUTER_L3;
1782         const uint64_t l4m = tunnel ? MLX5_FLOW_LAYER_INNER_L4 :
1783                                       MLX5_FLOW_LAYER_OUTER_L4;
1784         int ret;
1785
1786         assert(flow_mask);
1787         if (target_protocol != 0xff && target_protocol != IPPROTO_TCP)
1788                 return rte_flow_error_set(error, EINVAL,
1789                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1790                                           "protocol filtering not compatible"
1791                                           " with TCP layer");
1792         if (!(item_flags & l3m))
1793                 return rte_flow_error_set(error, EINVAL,
1794                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1795                                           "L3 is mandatory to filter on L4");
1796         if (item_flags & l4m)
1797                 return rte_flow_error_set(error, EINVAL,
1798                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1799                                           "multiple L4 layers not supported");
1800         if (!mask)
1801                 mask = &rte_flow_item_tcp_mask;
1802         ret = mlx5_flow_item_acceptable
1803                 (item, (const uint8_t *)mask,
1804                  (const uint8_t *)flow_mask,
1805                  sizeof(struct rte_flow_item_tcp), error);
1806         if (ret < 0)
1807                 return ret;
1808         return 0;
1809 }
1810
1811 /**
1812  * Validate VXLAN item.
1813  *
1814  * @param[in] item
1815  *   Item specification.
1816  * @param[in] item_flags
1817  *   Bit-fields that holds the items detected until now.
1818  * @param[in] target_protocol
1819  *   The next protocol in the previous item.
1820  * @param[out] error
1821  *   Pointer to error structure.
1822  *
1823  * @return
1824  *   0 on success, a negative errno value otherwise and rte_errno is set.
1825  */
1826 int
1827 mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
1828                               uint64_t item_flags,
1829                               struct rte_flow_error *error)
1830 {
1831         const struct rte_flow_item_vxlan *spec = item->spec;
1832         const struct rte_flow_item_vxlan *mask = item->mask;
1833         int ret;
1834         union vni {
1835                 uint32_t vlan_id;
1836                 uint8_t vni[4];
1837         } id = { .vlan_id = 0, };
1838         uint32_t vlan_id = 0;
1839
1840
1841         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1842                 return rte_flow_error_set(error, ENOTSUP,
1843                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1844                                           "multiple tunnel layers not"
1845                                           " supported");
1846         /*
1847          * Verify only UDPv4 is present as defined in
1848          * https://tools.ietf.org/html/rfc7348
1849          */
1850         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1851                 return rte_flow_error_set(error, EINVAL,
1852                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1853                                           "no outer UDP layer found");
1854         if (!mask)
1855                 mask = &rte_flow_item_vxlan_mask;
1856         ret = mlx5_flow_item_acceptable
1857                 (item, (const uint8_t *)mask,
1858                  (const uint8_t *)&rte_flow_item_vxlan_mask,
1859                  sizeof(struct rte_flow_item_vxlan),
1860                  error);
1861         if (ret < 0)
1862                 return ret;
1863         if (spec) {
1864                 memcpy(&id.vni[1], spec->vni, 3);
1865                 vlan_id = id.vlan_id;
1866                 memcpy(&id.vni[1], mask->vni, 3);
1867                 vlan_id &= id.vlan_id;
1868         }
1869         /*
1870          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
1871          * only this layer is defined in the Verbs specification it is
1872          * interpreted as wildcard and all packets will match this
1873          * rule, if it follows a full stack layer (ex: eth / ipv4 /
1874          * udp), all packets matching the layers before will also
1875          * match this rule.  To avoid such situation, VNI 0 is
1876          * currently refused.
1877          */
1878         if (!vlan_id)
1879                 return rte_flow_error_set(error, ENOTSUP,
1880                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1881                                           "VXLAN vni cannot be 0");
1882         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1883                 return rte_flow_error_set(error, ENOTSUP,
1884                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1885                                           "VXLAN tunnel must be fully defined");
1886         return 0;
1887 }
1888
1889 /**
1890  * Validate VXLAN_GPE item.
1891  *
1892  * @param[in] item
1893  *   Item specification.
1894  * @param[in] item_flags
1895  *   Bit-fields that holds the items detected until now.
1896  * @param[in] priv
1897  *   Pointer to the private data structure.
1898  * @param[in] target_protocol
1899  *   The next protocol in the previous item.
1900  * @param[out] error
1901  *   Pointer to error structure.
1902  *
1903  * @return
1904  *   0 on success, a negative errno value otherwise and rte_errno is set.
1905  */
1906 int
1907 mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
1908                                   uint64_t item_flags,
1909                                   struct rte_eth_dev *dev,
1910                                   struct rte_flow_error *error)
1911 {
1912         struct mlx5_priv *priv = dev->data->dev_private;
1913         const struct rte_flow_item_vxlan_gpe *spec = item->spec;
1914         const struct rte_flow_item_vxlan_gpe *mask = item->mask;
1915         int ret;
1916         union vni {
1917                 uint32_t vlan_id;
1918                 uint8_t vni[4];
1919         } id = { .vlan_id = 0, };
1920         uint32_t vlan_id = 0;
1921
1922         if (!priv->config.l3_vxlan_en)
1923                 return rte_flow_error_set(error, ENOTSUP,
1924                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1925                                           "L3 VXLAN is not enabled by device"
1926                                           " parameter and/or not configured in"
1927                                           " firmware");
1928         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
1929                 return rte_flow_error_set(error, ENOTSUP,
1930                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1931                                           "multiple tunnel layers not"
1932                                           " supported");
1933         /*
1934          * Verify only UDPv4 is present as defined in
1935          * https://tools.ietf.org/html/rfc7348
1936          */
1937         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
1938                 return rte_flow_error_set(error, EINVAL,
1939                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1940                                           "no outer UDP layer found");
1941         if (!mask)
1942                 mask = &rte_flow_item_vxlan_gpe_mask;
1943         ret = mlx5_flow_item_acceptable
1944                 (item, (const uint8_t *)mask,
1945                  (const uint8_t *)&rte_flow_item_vxlan_gpe_mask,
1946                  sizeof(struct rte_flow_item_vxlan_gpe),
1947                  error);
1948         if (ret < 0)
1949                 return ret;
1950         if (spec) {
1951                 if (spec->protocol)
1952                         return rte_flow_error_set(error, ENOTSUP,
1953                                                   RTE_FLOW_ERROR_TYPE_ITEM,
1954                                                   item,
1955                                                   "VxLAN-GPE protocol"
1956                                                   " not supported");
1957                 memcpy(&id.vni[1], spec->vni, 3);
1958                 vlan_id = id.vlan_id;
1959                 memcpy(&id.vni[1], mask->vni, 3);
1960                 vlan_id &= id.vlan_id;
1961         }
1962         /*
1963          * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
1964          * layer is defined in the Verbs specification it is interpreted as
1965          * wildcard and all packets will match this rule, if it follows a full
1966          * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
1967          * before will also match this rule.  To avoid such situation, VNI 0
1968          * is currently refused.
1969          */
1970         if (!vlan_id)
1971                 return rte_flow_error_set(error, ENOTSUP,
1972                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1973                                           "VXLAN-GPE vni cannot be 0");
1974         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
1975                 return rte_flow_error_set(error, ENOTSUP,
1976                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1977                                           "VXLAN-GPE tunnel must be fully"
1978                                           " defined");
1979         return 0;
1980 }
1981 /**
1982  * Validate GRE Key item.
1983  *
1984  * @param[in] item
1985  *   Item specification.
1986  * @param[in] item_flags
1987  *   Bit flags to mark detected items.
1988  * @param[in] gre_item
1989  *   Pointer to gre_item
1990  * @param[out] error
1991  *   Pointer to error structure.
1992  *
1993  * @return
1994  *   0 on success, a negative errno value otherwise and rte_errno is set.
1995  */
1996 int
1997 mlx5_flow_validate_item_gre_key(const struct rte_flow_item *item,
1998                                 uint64_t item_flags,
1999                                 const struct rte_flow_item *gre_item,
2000                                 struct rte_flow_error *error)
2001 {
2002         const rte_be32_t *mask = item->mask;
2003         int ret = 0;
2004         rte_be32_t gre_key_default_mask = RTE_BE32(UINT32_MAX);
2005         const struct rte_flow_item_gre *gre_spec;
2006         const struct rte_flow_item_gre *gre_mask;
2007
2008         if (item_flags & MLX5_FLOW_LAYER_GRE_KEY)
2009                 return rte_flow_error_set(error, ENOTSUP,
2010                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2011                                           "Multiple GRE key not support");
2012         if (!(item_flags & MLX5_FLOW_LAYER_GRE))
2013                 return rte_flow_error_set(error, ENOTSUP,
2014                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2015                                           "No preceding GRE header");
2016         if (item_flags & MLX5_FLOW_LAYER_INNER)
2017                 return rte_flow_error_set(error, ENOTSUP,
2018                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2019                                           "GRE key following a wrong item");
2020         gre_mask = gre_item->mask;
2021         if (!gre_mask)
2022                 gre_mask = &rte_flow_item_gre_mask;
2023         gre_spec = gre_item->spec;
2024         if (gre_spec && (gre_mask->c_rsvd0_ver & RTE_BE16(0x2000)) &&
2025                          !(gre_spec->c_rsvd0_ver & RTE_BE16(0x2000)))
2026                 return rte_flow_error_set(error, EINVAL,
2027                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2028                                           "Key bit must be on");
2029
2030         if (!mask)
2031                 mask = &gre_key_default_mask;
2032         ret = mlx5_flow_item_acceptable
2033                 (item, (const uint8_t *)mask,
2034                  (const uint8_t *)&gre_key_default_mask,
2035                  sizeof(rte_be32_t), error);
2036         return ret;
2037 }
2038
2039 /**
2040  * Validate GRE item.
2041  *
2042  * @param[in] item
2043  *   Item specification.
2044  * @param[in] item_flags
2045  *   Bit flags to mark detected items.
2046  * @param[in] target_protocol
2047  *   The next protocol in the previous item.
2048  * @param[out] error
2049  *   Pointer to error structure.
2050  *
2051  * @return
2052  *   0 on success, a negative errno value otherwise and rte_errno is set.
2053  */
2054 int
2055 mlx5_flow_validate_item_gre(const struct rte_flow_item *item,
2056                             uint64_t item_flags,
2057                             uint8_t target_protocol,
2058                             struct rte_flow_error *error)
2059 {
2060         const struct rte_flow_item_gre *spec __rte_unused = item->spec;
2061         const struct rte_flow_item_gre *mask = item->mask;
2062         int ret;
2063         const struct rte_flow_item_gre nic_mask = {
2064                 .c_rsvd0_ver = RTE_BE16(0xB000),
2065                 .protocol = RTE_BE16(UINT16_MAX),
2066         };
2067
2068         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2069                 return rte_flow_error_set(error, EINVAL,
2070                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2071                                           "protocol filtering not compatible"
2072                                           " with this GRE layer");
2073         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2074                 return rte_flow_error_set(error, ENOTSUP,
2075                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2076                                           "multiple tunnel layers not"
2077                                           " supported");
2078         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2079                 return rte_flow_error_set(error, ENOTSUP,
2080                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2081                                           "L3 Layer is missing");
2082         if (!mask)
2083                 mask = &rte_flow_item_gre_mask;
2084         ret = mlx5_flow_item_acceptable
2085                 (item, (const uint8_t *)mask,
2086                  (const uint8_t *)&nic_mask,
2087                  sizeof(struct rte_flow_item_gre), error);
2088         if (ret < 0)
2089                 return ret;
2090 #ifndef HAVE_MLX5DV_DR
2091 #ifndef HAVE_IBV_DEVICE_MPLS_SUPPORT
2092         if (spec && (spec->protocol & mask->protocol))
2093                 return rte_flow_error_set(error, ENOTSUP,
2094                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2095                                           "without MPLS support the"
2096                                           " specification cannot be used for"
2097                                           " filtering");
2098 #endif
2099 #endif
2100         return 0;
2101 }
2102
2103 /**
2104  * Validate Geneve item.
2105  *
2106  * @param[in] item
2107  *   Item specification.
2108  * @param[in] itemFlags
2109  *   Bit-fields that holds the items detected until now.
2110  * @param[in] enPriv
2111  *   Pointer to the private data structure.
2112  * @param[out] error
2113  *   Pointer to error structure.
2114  *
2115  * @return
2116  *   0 on success, a negative errno value otherwise and rte_errno is set.
2117  */
2118
2119 int
2120 mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
2121                                uint64_t item_flags,
2122                                struct rte_eth_dev *dev,
2123                                struct rte_flow_error *error)
2124 {
2125         struct mlx5_priv *priv = dev->data->dev_private;
2126         const struct rte_flow_item_geneve *spec = item->spec;
2127         const struct rte_flow_item_geneve *mask = item->mask;
2128         int ret;
2129         uint16_t gbhdr;
2130         uint8_t opt_len = priv->config.hca_attr.geneve_max_opt_len ?
2131                           MLX5_GENEVE_OPT_LEN_1 : MLX5_GENEVE_OPT_LEN_0;
2132         const struct rte_flow_item_geneve nic_mask = {
2133                 .ver_opt_len_o_c_rsvd0 = RTE_BE16(0x3f80),
2134                 .vni = "\xff\xff\xff",
2135                 .protocol = RTE_BE16(UINT16_MAX),
2136         };
2137
2138         if (!(priv->config.hca_attr.flex_parser_protocols &
2139               MLX5_HCA_FLEX_GENEVE_ENABLED) ||
2140             !priv->config.hca_attr.tunnel_stateless_geneve_rx)
2141                 return rte_flow_error_set(error, ENOTSUP,
2142                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2143                                           "L3 Geneve is not enabled by device"
2144                                           " parameter and/or not configured in"
2145                                           " firmware");
2146         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2147                 return rte_flow_error_set(error, ENOTSUP,
2148                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2149                                           "multiple tunnel layers not"
2150                                           " supported");
2151         /*
2152          * Verify only UDPv4 is present as defined in
2153          * https://tools.ietf.org/html/rfc7348
2154          */
2155         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L4_UDP))
2156                 return rte_flow_error_set(error, EINVAL,
2157                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2158                                           "no outer UDP layer found");
2159         if (!mask)
2160                 mask = &rte_flow_item_geneve_mask;
2161         ret = mlx5_flow_item_acceptable
2162                                   (item, (const uint8_t *)mask,
2163                                    (const uint8_t *)&nic_mask,
2164                                    sizeof(struct rte_flow_item_geneve), error);
2165         if (ret)
2166                 return ret;
2167         if (spec) {
2168                 gbhdr = rte_be_to_cpu_16(spec->ver_opt_len_o_c_rsvd0);
2169                 if (MLX5_GENEVE_VER_VAL(gbhdr) ||
2170                      MLX5_GENEVE_CRITO_VAL(gbhdr) ||
2171                      MLX5_GENEVE_RSVD_VAL(gbhdr) || spec->rsvd1)
2172                         return rte_flow_error_set(error, ENOTSUP,
2173                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2174                                                   item,
2175                                                   "Geneve protocol unsupported"
2176                                                   " fields are being used");
2177                 if (MLX5_GENEVE_OPTLEN_VAL(gbhdr) > opt_len)
2178                         return rte_flow_error_set
2179                                         (error, ENOTSUP,
2180                                          RTE_FLOW_ERROR_TYPE_ITEM,
2181                                          item,
2182                                          "Unsupported Geneve options length");
2183         }
2184         if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
2185                 return rte_flow_error_set
2186                                     (error, ENOTSUP,
2187                                      RTE_FLOW_ERROR_TYPE_ITEM, item,
2188                                      "Geneve tunnel must be fully defined");
2189         return 0;
2190 }
2191
2192 /**
2193  * Validate MPLS item.
2194  *
2195  * @param[in] dev
2196  *   Pointer to the rte_eth_dev structure.
2197  * @param[in] item
2198  *   Item specification.
2199  * @param[in] item_flags
2200  *   Bit-fields that holds the items detected until now.
2201  * @param[in] prev_layer
2202  *   The protocol layer indicated in previous item.
2203  * @param[out] error
2204  *   Pointer to error structure.
2205  *
2206  * @return
2207  *   0 on success, a negative errno value otherwise and rte_errno is set.
2208  */
2209 int
2210 mlx5_flow_validate_item_mpls(struct rte_eth_dev *dev __rte_unused,
2211                              const struct rte_flow_item *item __rte_unused,
2212                              uint64_t item_flags __rte_unused,
2213                              uint64_t prev_layer __rte_unused,
2214                              struct rte_flow_error *error)
2215 {
2216 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
2217         const struct rte_flow_item_mpls *mask = item->mask;
2218         struct mlx5_priv *priv = dev->data->dev_private;
2219         int ret;
2220
2221         if (!priv->config.mpls_en)
2222                 return rte_flow_error_set(error, ENOTSUP,
2223                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2224                                           "MPLS not supported or"
2225                                           " disabled in firmware"
2226                                           " configuration.");
2227         /* MPLS over IP, UDP, GRE is allowed */
2228         if (!(prev_layer & (MLX5_FLOW_LAYER_OUTER_L3 |
2229                             MLX5_FLOW_LAYER_OUTER_L4_UDP |
2230                             MLX5_FLOW_LAYER_GRE)))
2231                 return rte_flow_error_set(error, EINVAL,
2232                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2233                                           "protocol filtering not compatible"
2234                                           " with MPLS layer");
2235         /* Multi-tunnel isn't allowed but MPLS over GRE is an exception. */
2236         if ((item_flags & MLX5_FLOW_LAYER_TUNNEL) &&
2237             !(item_flags & MLX5_FLOW_LAYER_GRE))
2238                 return rte_flow_error_set(error, ENOTSUP,
2239                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2240                                           "multiple tunnel layers not"
2241                                           " supported");
2242         if (!mask)
2243                 mask = &rte_flow_item_mpls_mask;
2244         ret = mlx5_flow_item_acceptable
2245                 (item, (const uint8_t *)mask,
2246                  (const uint8_t *)&rte_flow_item_mpls_mask,
2247                  sizeof(struct rte_flow_item_mpls), error);
2248         if (ret < 0)
2249                 return ret;
2250         return 0;
2251 #endif
2252         return rte_flow_error_set(error, ENOTSUP,
2253                                   RTE_FLOW_ERROR_TYPE_ITEM, item,
2254                                   "MPLS is not supported by Verbs, please"
2255                                   " update.");
2256 }
2257
2258 /**
2259  * Validate NVGRE item.
2260  *
2261  * @param[in] item
2262  *   Item specification.
2263  * @param[in] item_flags
2264  *   Bit flags to mark detected items.
2265  * @param[in] target_protocol
2266  *   The next protocol in the previous item.
2267  * @param[out] error
2268  *   Pointer to error structure.
2269  *
2270  * @return
2271  *   0 on success, a negative errno value otherwise and rte_errno is set.
2272  */
2273 int
2274 mlx5_flow_validate_item_nvgre(const struct rte_flow_item *item,
2275                               uint64_t item_flags,
2276                               uint8_t target_protocol,
2277                               struct rte_flow_error *error)
2278 {
2279         const struct rte_flow_item_nvgre *mask = item->mask;
2280         int ret;
2281
2282         if (target_protocol != 0xff && target_protocol != IPPROTO_GRE)
2283                 return rte_flow_error_set(error, EINVAL,
2284                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2285                                           "protocol filtering not compatible"
2286                                           " with this GRE layer");
2287         if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
2288                 return rte_flow_error_set(error, ENOTSUP,
2289                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2290                                           "multiple tunnel layers not"
2291                                           " supported");
2292         if (!(item_flags & MLX5_FLOW_LAYER_OUTER_L3))
2293                 return rte_flow_error_set(error, ENOTSUP,
2294                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2295                                           "L3 Layer is missing");
2296         if (!mask)
2297                 mask = &rte_flow_item_nvgre_mask;
2298         ret = mlx5_flow_item_acceptable
2299                 (item, (const uint8_t *)mask,
2300                  (const uint8_t *)&rte_flow_item_nvgre_mask,
2301                  sizeof(struct rte_flow_item_nvgre), error);
2302         if (ret < 0)
2303                 return ret;
2304         return 0;
2305 }
2306
2307 /* Allocate unique ID for the split Q/RSS subflows. */
2308 static uint32_t
2309 flow_qrss_get_id(struct rte_eth_dev *dev)
2310 {
2311         struct mlx5_priv *priv = dev->data->dev_private;
2312         uint32_t qrss_id, ret;
2313
2314         ret = mlx5_flow_id_get(priv->qrss_id_pool, &qrss_id);
2315         if (ret)
2316                 return 0;
2317         assert(qrss_id);
2318         return qrss_id;
2319 }
2320
2321 /* Free unique ID for the split Q/RSS subflows. */
2322 static void
2323 flow_qrss_free_id(struct rte_eth_dev *dev,  uint32_t qrss_id)
2324 {
2325         struct mlx5_priv *priv = dev->data->dev_private;
2326
2327         if (qrss_id)
2328                 mlx5_flow_id_release(priv->qrss_id_pool, qrss_id);
2329 }
2330
2331 /**
2332  * Release resource related QUEUE/RSS action split.
2333  *
2334  * @param dev
2335  *   Pointer to Ethernet device.
2336  * @param flow
2337  *   Flow to release id's from.
2338  */
2339 static void
2340 flow_mreg_split_qrss_release(struct rte_eth_dev *dev,
2341                              struct rte_flow *flow)
2342 {
2343         struct mlx5_flow *dev_flow;
2344
2345         LIST_FOREACH(dev_flow, &flow->dev_flows, next)
2346                 if (dev_flow->qrss_id)
2347                         flow_qrss_free_id(dev, dev_flow->qrss_id);
2348 }
2349
2350 static int
2351 flow_null_validate(struct rte_eth_dev *dev __rte_unused,
2352                    const struct rte_flow_attr *attr __rte_unused,
2353                    const struct rte_flow_item items[] __rte_unused,
2354                    const struct rte_flow_action actions[] __rte_unused,
2355                    bool external __rte_unused,
2356                    struct rte_flow_error *error)
2357 {
2358         return rte_flow_error_set(error, ENOTSUP,
2359                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2360 }
2361
2362 static struct mlx5_flow *
2363 flow_null_prepare(const struct rte_flow_attr *attr __rte_unused,
2364                   const struct rte_flow_item items[] __rte_unused,
2365                   const struct rte_flow_action actions[] __rte_unused,
2366                   struct rte_flow_error *error)
2367 {
2368         rte_flow_error_set(error, ENOTSUP,
2369                            RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2370         return NULL;
2371 }
2372
2373 static int
2374 flow_null_translate(struct rte_eth_dev *dev __rte_unused,
2375                     struct mlx5_flow *dev_flow __rte_unused,
2376                     const struct rte_flow_attr *attr __rte_unused,
2377                     const struct rte_flow_item items[] __rte_unused,
2378                     const struct rte_flow_action actions[] __rte_unused,
2379                     struct rte_flow_error *error)
2380 {
2381         return rte_flow_error_set(error, ENOTSUP,
2382                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2383 }
2384
2385 static int
2386 flow_null_apply(struct rte_eth_dev *dev __rte_unused,
2387                 struct rte_flow *flow __rte_unused,
2388                 struct rte_flow_error *error)
2389 {
2390         return rte_flow_error_set(error, ENOTSUP,
2391                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2392 }
2393
2394 static void
2395 flow_null_remove(struct rte_eth_dev *dev __rte_unused,
2396                  struct rte_flow *flow __rte_unused)
2397 {
2398 }
2399
2400 static void
2401 flow_null_destroy(struct rte_eth_dev *dev __rte_unused,
2402                   struct rte_flow *flow __rte_unused)
2403 {
2404 }
2405
2406 static int
2407 flow_null_query(struct rte_eth_dev *dev __rte_unused,
2408                 struct rte_flow *flow __rte_unused,
2409                 const struct rte_flow_action *actions __rte_unused,
2410                 void *data __rte_unused,
2411                 struct rte_flow_error *error)
2412 {
2413         return rte_flow_error_set(error, ENOTSUP,
2414                                   RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL, NULL);
2415 }
2416
2417 /* Void driver to protect from null pointer reference. */
2418 const struct mlx5_flow_driver_ops mlx5_flow_null_drv_ops = {
2419         .validate = flow_null_validate,
2420         .prepare = flow_null_prepare,
2421         .translate = flow_null_translate,
2422         .apply = flow_null_apply,
2423         .remove = flow_null_remove,
2424         .destroy = flow_null_destroy,
2425         .query = flow_null_query,
2426 };
2427
2428 /**
2429  * Select flow driver type according to flow attributes and device
2430  * configuration.
2431  *
2432  * @param[in] dev
2433  *   Pointer to the dev structure.
2434  * @param[in] attr
2435  *   Pointer to the flow attributes.
2436  *
2437  * @return
2438  *   flow driver type, MLX5_FLOW_TYPE_MAX otherwise.
2439  */
2440 static enum mlx5_flow_drv_type
2441 flow_get_drv_type(struct rte_eth_dev *dev, const struct rte_flow_attr *attr)
2442 {
2443         struct mlx5_priv *priv = dev->data->dev_private;
2444         enum mlx5_flow_drv_type type = MLX5_FLOW_TYPE_MAX;
2445
2446         if (attr->transfer && priv->config.dv_esw_en)
2447                 type = MLX5_FLOW_TYPE_DV;
2448         if (!attr->transfer)
2449                 type = priv->config.dv_flow_en ? MLX5_FLOW_TYPE_DV :
2450                                                  MLX5_FLOW_TYPE_VERBS;
2451         return type;
2452 }
2453
2454 #define flow_get_drv_ops(type) flow_drv_ops[type]
2455
2456 /**
2457  * Flow driver validation API. This abstracts calling driver specific functions.
2458  * The type of flow driver is determined according to flow attributes.
2459  *
2460  * @param[in] dev
2461  *   Pointer to the dev structure.
2462  * @param[in] attr
2463  *   Pointer to the flow attributes.
2464  * @param[in] items
2465  *   Pointer to the list of items.
2466  * @param[in] actions
2467  *   Pointer to the list of actions.
2468  * @param[in] external
2469  *   This flow rule is created by request external to PMD.
2470  * @param[out] error
2471  *   Pointer to the error structure.
2472  *
2473  * @return
2474  *   0 on success, a negative errno value otherwise and rte_errno is set.
2475  */
2476 static inline int
2477 flow_drv_validate(struct rte_eth_dev *dev,
2478                   const struct rte_flow_attr *attr,
2479                   const struct rte_flow_item items[],
2480                   const struct rte_flow_action actions[],
2481                   bool external, struct rte_flow_error *error)
2482 {
2483         const struct mlx5_flow_driver_ops *fops;
2484         enum mlx5_flow_drv_type type = flow_get_drv_type(dev, attr);
2485
2486         fops = flow_get_drv_ops(type);
2487         return fops->validate(dev, attr, items, actions, external, error);
2488 }
2489
2490 /**
2491  * Flow driver preparation API. This abstracts calling driver specific
2492  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2493  * calculates the size of memory required for device flow, allocates the memory,
2494  * initializes the device flow and returns the pointer.
2495  *
2496  * @note
2497  *   This function initializes device flow structure such as dv or verbs in
2498  *   struct mlx5_flow. However, it is caller's responsibility to initialize the
2499  *   rest. For example, adding returning device flow to flow->dev_flow list and
2500  *   setting backward reference to the flow should be done out of this function.
2501  *   layers field is not filled either.
2502  *
2503  * @param[in] attr
2504  *   Pointer to the flow attributes.
2505  * @param[in] items
2506  *   Pointer to the list of items.
2507  * @param[in] actions
2508  *   Pointer to the list of actions.
2509  * @param[out] error
2510  *   Pointer to the error structure.
2511  *
2512  * @return
2513  *   Pointer to device flow on success, otherwise NULL and rte_errno is set.
2514  */
2515 static inline struct mlx5_flow *
2516 flow_drv_prepare(const struct rte_flow *flow,
2517                  const struct rte_flow_attr *attr,
2518                  const struct rte_flow_item items[],
2519                  const struct rte_flow_action actions[],
2520                  struct rte_flow_error *error)
2521 {
2522         const struct mlx5_flow_driver_ops *fops;
2523         enum mlx5_flow_drv_type type = flow->drv_type;
2524
2525         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2526         fops = flow_get_drv_ops(type);
2527         return fops->prepare(attr, items, actions, error);
2528 }
2529
2530 /**
2531  * Flow driver translation API. This abstracts calling driver specific
2532  * functions. Parent flow (rte_flow) should have driver type (drv_type). It
2533  * translates a generic flow into a driver flow. flow_drv_prepare() must
2534  * precede.
2535  *
2536  * @note
2537  *   dev_flow->layers could be filled as a result of parsing during translation
2538  *   if needed by flow_drv_apply(). dev_flow->flow->actions can also be filled
2539  *   if necessary. As a flow can have multiple dev_flows by RSS flow expansion,
2540  *   flow->actions could be overwritten even though all the expanded dev_flows
2541  *   have the same actions.
2542  *
2543  * @param[in] dev
2544  *   Pointer to the rte dev structure.
2545  * @param[in, out] dev_flow
2546  *   Pointer to the mlx5 flow.
2547  * @param[in] attr
2548  *   Pointer to the flow attributes.
2549  * @param[in] items
2550  *   Pointer to the list of items.
2551  * @param[in] actions
2552  *   Pointer to the list of actions.
2553  * @param[out] error
2554  *   Pointer to the error structure.
2555  *
2556  * @return
2557  *   0 on success, a negative errno value otherwise and rte_errno is set.
2558  */
2559 static inline int
2560 flow_drv_translate(struct rte_eth_dev *dev, struct mlx5_flow *dev_flow,
2561                    const struct rte_flow_attr *attr,
2562                    const struct rte_flow_item items[],
2563                    const struct rte_flow_action actions[],
2564                    struct rte_flow_error *error)
2565 {
2566         const struct mlx5_flow_driver_ops *fops;
2567         enum mlx5_flow_drv_type type = dev_flow->flow->drv_type;
2568
2569         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2570         fops = flow_get_drv_ops(type);
2571         return fops->translate(dev, dev_flow, attr, items, actions, error);
2572 }
2573
2574 /**
2575  * Flow driver apply API. This abstracts calling driver specific functions.
2576  * Parent flow (rte_flow) should have driver type (drv_type). It applies
2577  * translated driver flows on to device. flow_drv_translate() must precede.
2578  *
2579  * @param[in] dev
2580  *   Pointer to Ethernet device structure.
2581  * @param[in, out] flow
2582  *   Pointer to flow structure.
2583  * @param[out] error
2584  *   Pointer to error structure.
2585  *
2586  * @return
2587  *   0 on success, a negative errno value otherwise and rte_errno is set.
2588  */
2589 static inline int
2590 flow_drv_apply(struct rte_eth_dev *dev, struct rte_flow *flow,
2591                struct rte_flow_error *error)
2592 {
2593         const struct mlx5_flow_driver_ops *fops;
2594         enum mlx5_flow_drv_type type = flow->drv_type;
2595
2596         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2597         fops = flow_get_drv_ops(type);
2598         return fops->apply(dev, flow, error);
2599 }
2600
2601 /**
2602  * Flow driver remove API. This abstracts calling driver specific functions.
2603  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2604  * on device. All the resources of the flow should be freed by calling
2605  * flow_drv_destroy().
2606  *
2607  * @param[in] dev
2608  *   Pointer to Ethernet device.
2609  * @param[in, out] flow
2610  *   Pointer to flow structure.
2611  */
2612 static inline void
2613 flow_drv_remove(struct rte_eth_dev *dev, struct rte_flow *flow)
2614 {
2615         const struct mlx5_flow_driver_ops *fops;
2616         enum mlx5_flow_drv_type type = flow->drv_type;
2617
2618         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2619         fops = flow_get_drv_ops(type);
2620         fops->remove(dev, flow);
2621 }
2622
2623 /**
2624  * Flow driver destroy API. This abstracts calling driver specific functions.
2625  * Parent flow (rte_flow) should have driver type (drv_type). It removes a flow
2626  * on device and releases resources of the flow.
2627  *
2628  * @param[in] dev
2629  *   Pointer to Ethernet device.
2630  * @param[in, out] flow
2631  *   Pointer to flow structure.
2632  */
2633 static inline void
2634 flow_drv_destroy(struct rte_eth_dev *dev, struct rte_flow *flow)
2635 {
2636         const struct mlx5_flow_driver_ops *fops;
2637         enum mlx5_flow_drv_type type = flow->drv_type;
2638
2639         flow_mreg_split_qrss_release(dev, flow);
2640         assert(type > MLX5_FLOW_TYPE_MIN && type < MLX5_FLOW_TYPE_MAX);
2641         fops = flow_get_drv_ops(type);
2642         fops->destroy(dev, flow);
2643 }
2644
2645 /**
2646  * Validate a flow supported by the NIC.
2647  *
2648  * @see rte_flow_validate()
2649  * @see rte_flow_ops
2650  */
2651 int
2652 mlx5_flow_validate(struct rte_eth_dev *dev,
2653                    const struct rte_flow_attr *attr,
2654                    const struct rte_flow_item items[],
2655                    const struct rte_flow_action actions[],
2656                    struct rte_flow_error *error)
2657 {
2658         int ret;
2659
2660         ret = flow_drv_validate(dev, attr, items, actions, true, error);
2661         if (ret < 0)
2662                 return ret;
2663         return 0;
2664 }
2665
2666 /**
2667  * Get port id item from the item list.
2668  *
2669  * @param[in] item
2670  *   Pointer to the list of items.
2671  *
2672  * @return
2673  *   Pointer to the port id item if exist, else return NULL.
2674  */
2675 static const struct rte_flow_item *
2676 find_port_id_item(const struct rte_flow_item *item)
2677 {
2678         assert(item);
2679         for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2680                 if (item->type == RTE_FLOW_ITEM_TYPE_PORT_ID)
2681                         return item;
2682         }
2683         return NULL;
2684 }
2685
2686 /**
2687  * Get RSS action from the action list.
2688  *
2689  * @param[in] actions
2690  *   Pointer to the list of actions.
2691  *
2692  * @return
2693  *   Pointer to the RSS action if exist, else return NULL.
2694  */
2695 static const struct rte_flow_action_rss*
2696 flow_get_rss_action(const struct rte_flow_action actions[])
2697 {
2698         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2699                 switch (actions->type) {
2700                 case RTE_FLOW_ACTION_TYPE_RSS:
2701                         return (const struct rte_flow_action_rss *)
2702                                actions->conf;
2703                 default:
2704                         break;
2705                 }
2706         }
2707         return NULL;
2708 }
2709
2710 static unsigned int
2711 find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
2712 {
2713         const struct rte_flow_item *item;
2714         unsigned int has_vlan = 0;
2715
2716         for (item = pattern; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
2717                 if (item->type == RTE_FLOW_ITEM_TYPE_VLAN) {
2718                         has_vlan = 1;
2719                         break;
2720                 }
2721         }
2722         if (has_vlan)
2723                 return rss_level < 2 ? MLX5_EXPANSION_ROOT_ETH_VLAN :
2724                                        MLX5_EXPANSION_ROOT_OUTER_ETH_VLAN;
2725         return rss_level < 2 ? MLX5_EXPANSION_ROOT :
2726                                MLX5_EXPANSION_ROOT_OUTER;
2727 }
2728
2729 /**
2730  * Get QUEUE/RSS action from the action list.
2731  *
2732  * @param[in] actions
2733  *   Pointer to the list of actions.
2734  * @param[out] qrss
2735  *   Pointer to the return pointer.
2736  * @param[out] qrss_type
2737  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
2738  *   if no QUEUE/RSS is found.
2739  *
2740  * @return
2741  *   Total number of actions.
2742  */
2743 static int
2744 flow_parse_qrss_action(const struct rte_flow_action actions[],
2745                        const struct rte_flow_action **qrss)
2746 {
2747         int actions_n = 0;
2748
2749         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2750                 switch (actions->type) {
2751                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2752                 case RTE_FLOW_ACTION_TYPE_RSS:
2753                         *qrss = actions;
2754                         break;
2755                 default:
2756                         break;
2757                 }
2758                 actions_n++;
2759         }
2760         /* Count RTE_FLOW_ACTION_TYPE_END. */
2761         return actions_n + 1;
2762 }
2763
2764 /**
2765  * Check meter action from the action list.
2766  *
2767  * @param[in] actions
2768  *   Pointer to the list of actions.
2769  * @param[out] mtr
2770  *   Pointer to the meter exist flag.
2771  *
2772  * @return
2773  *   Total number of actions.
2774  */
2775 static int
2776 flow_check_meter_action(const struct rte_flow_action actions[], uint32_t *mtr)
2777 {
2778         int actions_n = 0;
2779
2780         assert(mtr);
2781         *mtr = 0;
2782         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2783                 switch (actions->type) {
2784                 case RTE_FLOW_ACTION_TYPE_METER:
2785                         *mtr = 1;
2786                         break;
2787                 default:
2788                         break;
2789                 }
2790                 actions_n++;
2791         }
2792         /* Count RTE_FLOW_ACTION_TYPE_END. */
2793         return actions_n + 1;
2794 }
2795
2796 /**
2797  * Check if the flow should be splited due to hairpin.
2798  * The reason for the split is that in current HW we can't
2799  * support encap on Rx, so if a flow have encap we move it
2800  * to Tx.
2801  *
2802  * @param dev
2803  *   Pointer to Ethernet device.
2804  * @param[in] attr
2805  *   Flow rule attributes.
2806  * @param[in] actions
2807  *   Associated actions (list terminated by the END action).
2808  *
2809  * @return
2810  *   > 0 the number of actions and the flow should be split,
2811  *   0 when no split required.
2812  */
2813 static int
2814 flow_check_hairpin_split(struct rte_eth_dev *dev,
2815                          const struct rte_flow_attr *attr,
2816                          const struct rte_flow_action actions[])
2817 {
2818         int queue_action = 0;
2819         int action_n = 0;
2820         int encap = 0;
2821         const struct rte_flow_action_queue *queue;
2822         const struct rte_flow_action_rss *rss;
2823         const struct rte_flow_action_raw_encap *raw_encap;
2824
2825         if (!attr->ingress)
2826                 return 0;
2827         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
2828                 switch (actions->type) {
2829                 case RTE_FLOW_ACTION_TYPE_QUEUE:
2830                         queue = actions->conf;
2831                         if (queue == NULL)
2832                                 return 0;
2833                         if (mlx5_rxq_get_type(dev, queue->index) !=
2834                             MLX5_RXQ_TYPE_HAIRPIN)
2835                                 return 0;
2836                         queue_action = 1;
2837                         action_n++;
2838                         break;
2839                 case RTE_FLOW_ACTION_TYPE_RSS:
2840                         rss = actions->conf;
2841                         if (rss == NULL || rss->queue_num == 0)
2842                                 return 0;
2843                         if (mlx5_rxq_get_type(dev, rss->queue[0]) !=
2844                             MLX5_RXQ_TYPE_HAIRPIN)
2845                                 return 0;
2846                         queue_action = 1;
2847                         action_n++;
2848                         break;
2849                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
2850                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
2851                         encap = 1;
2852                         action_n++;
2853                         break;
2854                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
2855                         raw_encap = actions->conf;
2856                         if (raw_encap->size >
2857                             (sizeof(struct rte_flow_item_eth) +
2858                              sizeof(struct rte_flow_item_ipv4)))
2859                                 encap = 1;
2860                         action_n++;
2861                         break;
2862                 default:
2863                         action_n++;
2864                         break;
2865                 }
2866         }
2867         if (encap == 1 && queue_action)
2868                 return action_n;
2869         return 0;
2870 }
2871
2872 /* Declare flow create/destroy prototype in advance. */
2873 static struct rte_flow *
2874 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
2875                  const struct rte_flow_attr *attr,
2876                  const struct rte_flow_item items[],
2877                  const struct rte_flow_action actions[],
2878                  bool external, struct rte_flow_error *error);
2879
2880 static void
2881 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
2882                   struct rte_flow *flow);
2883
2884 /**
2885  * Add a flow of copying flow metadata registers in RX_CP_TBL.
2886  *
2887  * As mark_id is unique, if there's already a registered flow for the mark_id,
2888  * return by increasing the reference counter of the resource. Otherwise, create
2889  * the resource (mcp_res) and flow.
2890  *
2891  * Flow looks like,
2892  *   - If ingress port is ANY and reg_c[1] is mark_id,
2893  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
2894  *
2895  * For default flow (zero mark_id), flow is like,
2896  *   - If ingress port is ANY,
2897  *     reg_b := reg_c[0] and jump to RX_ACT_TBL.
2898  *
2899  * @param dev
2900  *   Pointer to Ethernet device.
2901  * @param mark_id
2902  *   ID of MARK action, zero means default flow for META.
2903  * @param[out] error
2904  *   Perform verbose error reporting if not NULL.
2905  *
2906  * @return
2907  *   Associated resource on success, NULL otherwise and rte_errno is set.
2908  */
2909 static struct mlx5_flow_mreg_copy_resource *
2910 flow_mreg_add_copy_action(struct rte_eth_dev *dev, uint32_t mark_id,
2911                           struct rte_flow_error *error)
2912 {
2913         struct mlx5_priv *priv = dev->data->dev_private;
2914         struct rte_flow_attr attr = {
2915                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
2916                 .ingress = 1,
2917         };
2918         struct mlx5_rte_flow_item_tag tag_spec = {
2919                 .data = mark_id,
2920         };
2921         struct rte_flow_item items[] = {
2922                 [1] = { .type = RTE_FLOW_ITEM_TYPE_END, },
2923         };
2924         struct rte_flow_action_mark ftag = {
2925                 .id = mark_id,
2926         };
2927         struct mlx5_flow_action_copy_mreg cp_mreg = {
2928                 .dst = REG_B,
2929                 .src = 0,
2930         };
2931         struct rte_flow_action_jump jump = {
2932                 .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
2933         };
2934         struct rte_flow_action actions[] = {
2935                 [3] = { .type = RTE_FLOW_ACTION_TYPE_END, },
2936         };
2937         struct mlx5_flow_mreg_copy_resource *mcp_res;
2938         int ret;
2939
2940         /* Fill the register fileds in the flow. */
2941         ret = mlx5_flow_get_reg_id(dev, MLX5_FLOW_MARK, 0, error);
2942         if (ret < 0)
2943                 return NULL;
2944         tag_spec.id = ret;
2945         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
2946         if (ret < 0)
2947                 return NULL;
2948         cp_mreg.src = ret;
2949         /* Check if already registered. */
2950         assert(priv->mreg_cp_tbl);
2951         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl, mark_id);
2952         if (mcp_res) {
2953                 /* For non-default rule. */
2954                 if (mark_id != MLX5_DEFAULT_COPY_ID)
2955                         mcp_res->refcnt++;
2956                 assert(mark_id != MLX5_DEFAULT_COPY_ID || mcp_res->refcnt == 1);
2957                 return mcp_res;
2958         }
2959         /* Provide the full width of FLAG specific value. */
2960         if (mark_id == (priv->sh->dv_regc0_mask & MLX5_FLOW_MARK_DEFAULT))
2961                 tag_spec.data = MLX5_FLOW_MARK_DEFAULT;
2962         /* Build a new flow. */
2963         if (mark_id != MLX5_DEFAULT_COPY_ID) {
2964                 items[0] = (struct rte_flow_item){
2965                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
2966                         .spec = &tag_spec,
2967                 };
2968                 items[1] = (struct rte_flow_item){
2969                         .type = RTE_FLOW_ITEM_TYPE_END,
2970                 };
2971                 actions[0] = (struct rte_flow_action){
2972                         .type = MLX5_RTE_FLOW_ACTION_TYPE_MARK,
2973                         .conf = &ftag,
2974                 };
2975                 actions[1] = (struct rte_flow_action){
2976                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
2977                         .conf = &cp_mreg,
2978                 };
2979                 actions[2] = (struct rte_flow_action){
2980                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
2981                         .conf = &jump,
2982                 };
2983                 actions[3] = (struct rte_flow_action){
2984                         .type = RTE_FLOW_ACTION_TYPE_END,
2985                 };
2986         } else {
2987                 /* Default rule, wildcard match. */
2988                 attr.priority = MLX5_FLOW_PRIO_RSVD;
2989                 items[0] = (struct rte_flow_item){
2990                         .type = RTE_FLOW_ITEM_TYPE_END,
2991                 };
2992                 actions[0] = (struct rte_flow_action){
2993                         .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
2994                         .conf = &cp_mreg,
2995                 };
2996                 actions[1] = (struct rte_flow_action){
2997                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
2998                         .conf = &jump,
2999                 };
3000                 actions[2] = (struct rte_flow_action){
3001                         .type = RTE_FLOW_ACTION_TYPE_END,
3002                 };
3003         }
3004         /* Build a new entry. */
3005         mcp_res = rte_zmalloc(__func__, sizeof(*mcp_res), 0);
3006         if (!mcp_res) {
3007                 rte_errno = ENOMEM;
3008                 return NULL;
3009         }
3010         /*
3011          * The copy Flows are not included in any list. There
3012          * ones are referenced from other Flows and can not
3013          * be applied, removed, deleted in ardbitrary order
3014          * by list traversing.
3015          */
3016         mcp_res->flow = flow_list_create(dev, NULL, &attr, items,
3017                                          actions, false, error);
3018         if (!mcp_res->flow)
3019                 goto error;
3020         mcp_res->refcnt++;
3021         mcp_res->hlist_ent.key = mark_id;
3022         ret = mlx5_hlist_insert(priv->mreg_cp_tbl,
3023                                 &mcp_res->hlist_ent);
3024         assert(!ret);
3025         if (ret)
3026                 goto error;
3027         return mcp_res;
3028 error:
3029         if (mcp_res->flow)
3030                 flow_list_destroy(dev, NULL, mcp_res->flow);
3031         rte_free(mcp_res);
3032         return NULL;
3033 }
3034
3035 /**
3036  * Release flow in RX_CP_TBL.
3037  *
3038  * @param dev
3039  *   Pointer to Ethernet device.
3040  * @flow
3041  *   Parent flow for wich copying is provided.
3042  */
3043 static void
3044 flow_mreg_del_copy_action(struct rte_eth_dev *dev,
3045                           struct rte_flow *flow)
3046 {
3047         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3048         struct mlx5_priv *priv = dev->data->dev_private;
3049
3050         if (!mcp_res || !priv->mreg_cp_tbl)
3051                 return;
3052         if (flow->copy_applied) {
3053                 assert(mcp_res->appcnt);
3054                 flow->copy_applied = 0;
3055                 --mcp_res->appcnt;
3056                 if (!mcp_res->appcnt)
3057                         flow_drv_remove(dev, mcp_res->flow);
3058         }
3059         /*
3060          * We do not check availability of metadata registers here,
3061          * because copy resources are not allocated in this case.
3062          */
3063         if (--mcp_res->refcnt)
3064                 return;
3065         assert(mcp_res->flow);
3066         flow_list_destroy(dev, NULL, mcp_res->flow);
3067         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3068         rte_free(mcp_res);
3069         flow->mreg_copy = NULL;
3070 }
3071
3072 /**
3073  * Start flow in RX_CP_TBL.
3074  *
3075  * @param dev
3076  *   Pointer to Ethernet device.
3077  * @flow
3078  *   Parent flow for wich copying is provided.
3079  *
3080  * @return
3081  *   0 on success, a negative errno value otherwise and rte_errno is set.
3082  */
3083 static int
3084 flow_mreg_start_copy_action(struct rte_eth_dev *dev,
3085                             struct rte_flow *flow)
3086 {
3087         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3088         int ret;
3089
3090         if (!mcp_res || flow->copy_applied)
3091                 return 0;
3092         if (!mcp_res->appcnt) {
3093                 ret = flow_drv_apply(dev, mcp_res->flow, NULL);
3094                 if (ret)
3095                         return ret;
3096         }
3097         ++mcp_res->appcnt;
3098         flow->copy_applied = 1;
3099         return 0;
3100 }
3101
3102 /**
3103  * Stop flow in RX_CP_TBL.
3104  *
3105  * @param dev
3106  *   Pointer to Ethernet device.
3107  * @flow
3108  *   Parent flow for wich copying is provided.
3109  */
3110 static void
3111 flow_mreg_stop_copy_action(struct rte_eth_dev *dev,
3112                            struct rte_flow *flow)
3113 {
3114         struct mlx5_flow_mreg_copy_resource *mcp_res = flow->mreg_copy;
3115
3116         if (!mcp_res || !flow->copy_applied)
3117                 return;
3118         assert(mcp_res->appcnt);
3119         --mcp_res->appcnt;
3120         flow->copy_applied = 0;
3121         if (!mcp_res->appcnt)
3122                 flow_drv_remove(dev, mcp_res->flow);
3123 }
3124
3125 /**
3126  * Remove the default copy action from RX_CP_TBL.
3127  *
3128  * @param dev
3129  *   Pointer to Ethernet device.
3130  */
3131 static void
3132 flow_mreg_del_default_copy_action(struct rte_eth_dev *dev)
3133 {
3134         struct mlx5_flow_mreg_copy_resource *mcp_res;
3135         struct mlx5_priv *priv = dev->data->dev_private;
3136
3137         /* Check if default flow is registered. */
3138         if (!priv->mreg_cp_tbl)
3139                 return;
3140         mcp_res = (void *)mlx5_hlist_lookup(priv->mreg_cp_tbl,
3141                                             MLX5_DEFAULT_COPY_ID);
3142         if (!mcp_res)
3143                 return;
3144         assert(mcp_res->flow);
3145         flow_list_destroy(dev, NULL, mcp_res->flow);
3146         mlx5_hlist_remove(priv->mreg_cp_tbl, &mcp_res->hlist_ent);
3147         rte_free(mcp_res);
3148 }
3149
3150 /**
3151  * Add the default copy action in in RX_CP_TBL.
3152  *
3153  * @param dev
3154  *   Pointer to Ethernet device.
3155  * @param[out] error
3156  *   Perform verbose error reporting if not NULL.
3157  *
3158  * @return
3159  *   0 for success, negative value otherwise and rte_errno is set.
3160  */
3161 static int
3162 flow_mreg_add_default_copy_action(struct rte_eth_dev *dev,
3163                                   struct rte_flow_error *error)
3164 {
3165         struct mlx5_priv *priv = dev->data->dev_private;
3166         struct mlx5_flow_mreg_copy_resource *mcp_res;
3167
3168         /* Check whether extensive metadata feature is engaged. */
3169         if (!priv->config.dv_flow_en ||
3170             priv->config.dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3171             !mlx5_flow_ext_mreg_supported(dev) ||
3172             !priv->sh->dv_regc0_mask)
3173                 return 0;
3174         mcp_res = flow_mreg_add_copy_action(dev, MLX5_DEFAULT_COPY_ID, error);
3175         if (!mcp_res)
3176                 return -rte_errno;
3177         return 0;
3178 }
3179
3180 /**
3181  * Add a flow of copying flow metadata registers in RX_CP_TBL.
3182  *
3183  * All the flow having Q/RSS action should be split by
3184  * flow_mreg_split_qrss_prep() to pass by RX_CP_TBL. A flow in the RX_CP_TBL
3185  * performs the following,
3186  *   - CQE->flow_tag := reg_c[1] (MARK)
3187  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3188  * As CQE's flow_tag is not a register, it can't be simply copied from reg_c[1]
3189  * but there should be a flow per each MARK ID set by MARK action.
3190  *
3191  * For the aforementioned reason, if there's a MARK action in flow's action
3192  * list, a corresponding flow should be added to the RX_CP_TBL in order to copy
3193  * the MARK ID to CQE's flow_tag like,
3194  *   - If reg_c[1] is mark_id,
3195  *     flow_tag := mark_id, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3196  *
3197  * For SET_META action which stores value in reg_c[0], as the destination is
3198  * also a flow metadata register (reg_b), adding a default flow is enough. Zero
3199  * MARK ID means the default flow. The default flow looks like,
3200  *   - For all flow, reg_b := reg_c[0] and jump to RX_ACT_TBL.
3201  *
3202  * @param dev
3203  *   Pointer to Ethernet device.
3204  * @param flow
3205  *   Pointer to flow structure.
3206  * @param[in] actions
3207  *   Pointer to the list of actions.
3208  * @param[out] error
3209  *   Perform verbose error reporting if not NULL.
3210  *
3211  * @return
3212  *   0 on success, negative value otherwise and rte_errno is set.
3213  */
3214 static int
3215 flow_mreg_update_copy_table(struct rte_eth_dev *dev,
3216                             struct rte_flow *flow,
3217                             const struct rte_flow_action *actions,
3218                             struct rte_flow_error *error)
3219 {
3220         struct mlx5_priv *priv = dev->data->dev_private;
3221         struct mlx5_dev_config *config = &priv->config;
3222         struct mlx5_flow_mreg_copy_resource *mcp_res;
3223         const struct rte_flow_action_mark *mark;
3224
3225         /* Check whether extensive metadata feature is engaged. */
3226         if (!config->dv_flow_en ||
3227             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3228             !mlx5_flow_ext_mreg_supported(dev) ||
3229             !priv->sh->dv_regc0_mask)
3230                 return 0;
3231         /* Find MARK action. */
3232         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3233                 switch (actions->type) {
3234                 case RTE_FLOW_ACTION_TYPE_FLAG:
3235                         mcp_res = flow_mreg_add_copy_action
3236                                 (dev, MLX5_FLOW_MARK_DEFAULT, error);
3237                         if (!mcp_res)
3238                                 return -rte_errno;
3239                         flow->mreg_copy = mcp_res;
3240                         if (dev->data->dev_started) {
3241                                 mcp_res->appcnt++;
3242                                 flow->copy_applied = 1;
3243                         }
3244                         return 0;
3245                 case RTE_FLOW_ACTION_TYPE_MARK:
3246                         mark = (const struct rte_flow_action_mark *)
3247                                 actions->conf;
3248                         mcp_res =
3249                                 flow_mreg_add_copy_action(dev, mark->id, error);
3250                         if (!mcp_res)
3251                                 return -rte_errno;
3252                         flow->mreg_copy = mcp_res;
3253                         if (dev->data->dev_started) {
3254                                 mcp_res->appcnt++;
3255                                 flow->copy_applied = 1;
3256                         }
3257                         return 0;
3258                 default:
3259                         break;
3260                 }
3261         }
3262         return 0;
3263 }
3264
3265 #define MLX5_MAX_SPLIT_ACTIONS 24
3266 #define MLX5_MAX_SPLIT_ITEMS 24
3267
3268 /**
3269  * Split the hairpin flow.
3270  * Since HW can't support encap on Rx we move the encap to Tx.
3271  * If the count action is after the encap then we also
3272  * move the count action. in this case the count will also measure
3273  * the outer bytes.
3274  *
3275  * @param dev
3276  *   Pointer to Ethernet device.
3277  * @param[in] actions
3278  *   Associated actions (list terminated by the END action).
3279  * @param[out] actions_rx
3280  *   Rx flow actions.
3281  * @param[out] actions_tx
3282  *   Tx flow actions..
3283  * @param[out] pattern_tx
3284  *   The pattern items for the Tx flow.
3285  * @param[out] flow_id
3286  *   The flow ID connected to this flow.
3287  *
3288  * @return
3289  *   0 on success.
3290  */
3291 static int
3292 flow_hairpin_split(struct rte_eth_dev *dev,
3293                    const struct rte_flow_action actions[],
3294                    struct rte_flow_action actions_rx[],
3295                    struct rte_flow_action actions_tx[],
3296                    struct rte_flow_item pattern_tx[],
3297                    uint32_t *flow_id)
3298 {
3299         struct mlx5_priv *priv = dev->data->dev_private;
3300         const struct rte_flow_action_raw_encap *raw_encap;
3301         const struct rte_flow_action_raw_decap *raw_decap;
3302         struct mlx5_rte_flow_action_set_tag *set_tag;
3303         struct rte_flow_action *tag_action;
3304         struct mlx5_rte_flow_item_tag *tag_item;
3305         struct rte_flow_item *item;
3306         char *addr;
3307         int encap = 0;
3308
3309         mlx5_flow_id_get(priv->sh->flow_id_pool, flow_id);
3310         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3311                 switch (actions->type) {
3312                 case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3313                 case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
3314                         rte_memcpy(actions_tx, actions,
3315                                sizeof(struct rte_flow_action));
3316                         actions_tx++;
3317                         break;
3318                 case RTE_FLOW_ACTION_TYPE_COUNT:
3319                         if (encap) {
3320                                 rte_memcpy(actions_tx, actions,
3321                                            sizeof(struct rte_flow_action));
3322                                 actions_tx++;
3323                         } else {
3324                                 rte_memcpy(actions_rx, actions,
3325                                            sizeof(struct rte_flow_action));
3326                                 actions_rx++;
3327                         }
3328                         break;
3329                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3330                         raw_encap = actions->conf;
3331                         if (raw_encap->size >
3332                             (sizeof(struct rte_flow_item_eth) +
3333                              sizeof(struct rte_flow_item_ipv4))) {
3334                                 memcpy(actions_tx, actions,
3335                                        sizeof(struct rte_flow_action));
3336                                 actions_tx++;
3337                                 encap = 1;
3338                         } else {
3339                                 rte_memcpy(actions_rx, actions,
3340                                            sizeof(struct rte_flow_action));
3341                                 actions_rx++;
3342                         }
3343                         break;
3344                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3345                         raw_decap = actions->conf;
3346                         if (raw_decap->size <
3347                             (sizeof(struct rte_flow_item_eth) +
3348                              sizeof(struct rte_flow_item_ipv4))) {
3349                                 memcpy(actions_tx, actions,
3350                                        sizeof(struct rte_flow_action));
3351                                 actions_tx++;
3352                         } else {
3353                                 rte_memcpy(actions_rx, actions,
3354                                            sizeof(struct rte_flow_action));
3355                                 actions_rx++;
3356                         }
3357                         break;
3358                 default:
3359                         rte_memcpy(actions_rx, actions,
3360                                    sizeof(struct rte_flow_action));
3361                         actions_rx++;
3362                         break;
3363                 }
3364         }
3365         /* Add set meta action and end action for the Rx flow. */
3366         tag_action = actions_rx;
3367         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3368         actions_rx++;
3369         rte_memcpy(actions_rx, actions, sizeof(struct rte_flow_action));
3370         actions_rx++;
3371         set_tag = (void *)actions_rx;
3372         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_RX, 0, NULL);
3373         assert(set_tag->id > REG_NONE);
3374         set_tag->data = *flow_id;
3375         tag_action->conf = set_tag;
3376         /* Create Tx item list. */
3377         rte_memcpy(actions_tx, actions, sizeof(struct rte_flow_action));
3378         addr = (void *)&pattern_tx[2];
3379         item = pattern_tx;
3380         item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
3381         tag_item = (void *)addr;
3382         tag_item->data = *flow_id;
3383         tag_item->id = mlx5_flow_get_reg_id(dev, MLX5_HAIRPIN_TX, 0, NULL);
3384         assert(set_tag->id > REG_NONE);
3385         item->spec = tag_item;
3386         addr += sizeof(struct mlx5_rte_flow_item_tag);
3387         tag_item = (void *)addr;
3388         tag_item->data = UINT32_MAX;
3389         tag_item->id = UINT16_MAX;
3390         item->mask = tag_item;
3391         addr += sizeof(struct mlx5_rte_flow_item_tag);
3392         item->last = NULL;
3393         item++;
3394         item->type = RTE_FLOW_ITEM_TYPE_END;
3395         return 0;
3396 }
3397
3398 /**
3399  * The last stage of splitting chain, just creates the subflow
3400  * without any modification.
3401  *
3402  * @param dev
3403  *   Pointer to Ethernet device.
3404  * @param[in] flow
3405  *   Parent flow structure pointer.
3406  * @param[in, out] sub_flow
3407  *   Pointer to return the created subflow, may be NULL.
3408  * @param[in] attr
3409  *   Flow rule attributes.
3410  * @param[in] items
3411  *   Pattern specification (list terminated by the END pattern item).
3412  * @param[in] actions
3413  *   Associated actions (list terminated by the END action).
3414  * @param[in] external
3415  *   This flow rule is created by request external to PMD.
3416  * @param[out] error
3417  *   Perform verbose error reporting if not NULL.
3418  * @return
3419  *   0 on success, negative value otherwise
3420  */
3421 static int
3422 flow_create_split_inner(struct rte_eth_dev *dev,
3423                         struct rte_flow *flow,
3424                         struct mlx5_flow **sub_flow,
3425                         const struct rte_flow_attr *attr,
3426                         const struct rte_flow_item items[],
3427                         const struct rte_flow_action actions[],
3428                         bool external, struct rte_flow_error *error)
3429 {
3430         struct mlx5_flow *dev_flow;
3431
3432         dev_flow = flow_drv_prepare(flow, attr, items, actions, error);
3433         if (!dev_flow)
3434                 return -rte_errno;
3435         dev_flow->flow = flow;
3436         dev_flow->external = external;
3437         /* Subflow object was created, we must include one in the list. */
3438         LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
3439         if (sub_flow)
3440                 *sub_flow = dev_flow;
3441         return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
3442 }
3443
3444 /**
3445  * Split the meter flow.
3446  *
3447  * As meter flow will split to three sub flow, other than meter
3448  * action, the other actions make sense to only meter accepts
3449  * the packet. If it need to be dropped, no other additional
3450  * actions should be take.
3451  *
3452  * One kind of special action which decapsulates the L3 tunnel
3453  * header will be in the prefix sub flow, as not to take the
3454  * L3 tunnel header into account.
3455  *
3456  * @param dev
3457  *   Pointer to Ethernet device.
3458  * @param[in] actions
3459  *   Associated actions (list terminated by the END action).
3460  * @param[out] actions_sfx
3461  *   Suffix flow actions.
3462  * @param[out] actions_pre
3463  *   Prefix flow actions.
3464  * @param[out] pattern_sfx
3465  *   The pattern items for the suffix flow.
3466  * @param[out] tag_sfx
3467  *   Pointer to suffix flow tag.
3468  *
3469  * @return
3470  *   0 on success.
3471  */
3472 static int
3473 flow_meter_split_prep(struct rte_eth_dev *dev,
3474                  const struct rte_flow_action actions[],
3475                  struct rte_flow_action actions_sfx[],
3476                  struct rte_flow_action actions_pre[])
3477 {
3478         struct rte_flow_action *tag_action;
3479         struct mlx5_rte_flow_action_set_tag *set_tag;
3480         struct rte_flow_error error;
3481         const struct rte_flow_action_raw_encap *raw_encap;
3482         const struct rte_flow_action_raw_decap *raw_decap;
3483         uint32_t tag_id;
3484
3485         /* Add the extra tag action first. */
3486         tag_action = actions_pre;
3487         tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3488         actions_pre++;
3489         /* Prepare the actions for prefix and suffix flow. */
3490         for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
3491                 switch (actions->type) {
3492                 case RTE_FLOW_ACTION_TYPE_METER:
3493                 case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3494                 case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
3495                         memcpy(actions_pre, actions,
3496                                sizeof(struct rte_flow_action));
3497                         actions_pre++;
3498                         break;
3499                 case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
3500                         raw_encap = actions->conf;
3501                         if (raw_encap->size >
3502                             (sizeof(struct rte_flow_item_eth) +
3503                              sizeof(struct rte_flow_item_ipv4))) {
3504                                 memcpy(actions_sfx, actions,
3505                                        sizeof(struct rte_flow_action));
3506                                 actions_sfx++;
3507                         } else {
3508                                 rte_memcpy(actions_pre, actions,
3509                                            sizeof(struct rte_flow_action));
3510                                 actions_pre++;
3511                         }
3512                         break;
3513                 case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
3514                         raw_decap = actions->conf;
3515                         /* Size 0 decap means 50 bytes as vxlan decap. */
3516                         if (raw_decap->size && (raw_decap->size <
3517                             (sizeof(struct rte_flow_item_eth) +
3518                              sizeof(struct rte_flow_item_ipv4)))) {
3519                                 memcpy(actions_sfx, actions,
3520                                        sizeof(struct rte_flow_action));
3521                                 actions_sfx++;
3522                         } else {
3523                                 rte_memcpy(actions_pre, actions,
3524                                            sizeof(struct rte_flow_action));
3525                                 actions_pre++;
3526                         }
3527                         break;
3528                 default:
3529                         memcpy(actions_sfx, actions,
3530                                 sizeof(struct rte_flow_action));
3531                         actions_sfx++;
3532                         break;
3533                 }
3534         }
3535         /* Add end action to the actions. */
3536         actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
3537         actions_pre->type = RTE_FLOW_ACTION_TYPE_END;
3538         actions_pre++;
3539         /* Set the tag. */
3540         set_tag = (void *)actions_pre;
3541         set_tag->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
3542         /*
3543          * Get the id from the qrss_pool to make qrss share the id with meter.
3544          */
3545         tag_id = flow_qrss_get_id(dev);
3546         set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
3547         tag_action->conf = set_tag;
3548         return tag_id;
3549 }
3550
3551 /**
3552  * Split action list having QUEUE/RSS for metadata register copy.
3553  *
3554  * Once Q/RSS action is detected in user's action list, the flow action
3555  * should be split in order to copy metadata registers, which will happen in
3556  * RX_CP_TBL like,
3557  *   - CQE->flow_tag := reg_c[1] (MARK)
3558  *   - CQE->flow_table_metadata (reg_b) := reg_c[0] (META)
3559  * The Q/RSS action will be performed on RX_ACT_TBL after passing by RX_CP_TBL.
3560  * This is because the last action of each flow must be a terminal action
3561  * (QUEUE, RSS or DROP).
3562  *
3563  * Flow ID must be allocated to identify actions in the RX_ACT_TBL and it is
3564  * stored and kept in the mlx5_flow structure per each sub_flow.
3565  *
3566  * The Q/RSS action is replaced with,
3567  *   - SET_TAG, setting the allocated flow ID to reg_c[2].
3568  * And the following JUMP action is added at the end,
3569  *   - JUMP, to RX_CP_TBL.
3570  *
3571  * A flow to perform remained Q/RSS action will be created in RX_ACT_TBL by
3572  * flow_create_split_metadata() routine. The flow will look like,
3573  *   - If flow ID matches (reg_c[2]), perform Q/RSS.
3574  *
3575  * @param dev
3576  *   Pointer to Ethernet device.
3577  * @param[out] split_actions
3578  *   Pointer to store split actions to jump to CP_TBL.
3579  * @param[in] actions
3580  *   Pointer to the list of original flow actions.
3581  * @param[in] qrss
3582  *   Pointer to the Q/RSS action.
3583  * @param[in] actions_n
3584  *   Number of original actions.
3585  * @param[out] error
3586  *   Perform verbose error reporting if not NULL.
3587  *
3588  * @return
3589  *   non-zero unique flow_id on success, otherwise 0 and
3590  *   error/rte_error are set.
3591  */
3592 static uint32_t
3593 flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
3594                           struct rte_flow_action *split_actions,
3595                           const struct rte_flow_action *actions,
3596                           const struct rte_flow_action *qrss,
3597                           int actions_n, struct rte_flow_error *error)
3598 {
3599         struct mlx5_rte_flow_action_set_tag *set_tag;
3600         struct rte_flow_action_jump *jump;
3601         const int qrss_idx = qrss - actions;
3602         uint32_t flow_id = 0;
3603         int ret = 0;
3604
3605         /*
3606          * Given actions will be split
3607          * - Replace QUEUE/RSS action with SET_TAG to set flow ID.
3608          * - Add jump to mreg CP_TBL.
3609          * As a result, there will be one more action.
3610          */
3611         ++actions_n;
3612         memcpy(split_actions, actions, sizeof(*split_actions) * actions_n);
3613         set_tag = (void *)(split_actions + actions_n);
3614         /*
3615          * If tag action is not set to void(it means we are not the meter
3616          * suffix flow), add the tag action. Since meter suffix flow already
3617          * has the tag added.
3618          */
3619         if (split_actions[qrss_idx].type != RTE_FLOW_ACTION_TYPE_VOID) {
3620                 /*
3621                  * Allocate the new subflow ID. This one is unique within
3622                  * device and not shared with representors. Otherwise,
3623                  * we would have to resolve multi-thread access synch
3624                  * issue. Each flow on the shared device is appended
3625                  * with source vport identifier, so the resulting
3626                  * flows will be unique in the shared (by master and
3627                  * representors) domain even if they have coinciding
3628                  * IDs.
3629                  */
3630                 flow_id = flow_qrss_get_id(dev);
3631                 if (!flow_id)
3632                         return rte_flow_error_set(error, ENOMEM,
3633                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3634                                                   NULL, "can't allocate id "
3635                                                   "for split Q/RSS subflow");
3636                 /* Internal SET_TAG action to set flow ID. */
3637                 *set_tag = (struct mlx5_rte_flow_action_set_tag){
3638                         .data = flow_id,
3639                 };
3640                 ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0, error);
3641                 if (ret < 0)
3642                         return ret;
3643                 set_tag->id = ret;
3644                 /* Construct new actions array. */
3645                 /* Replace QUEUE/RSS action. */
3646                 split_actions[qrss_idx] = (struct rte_flow_action){
3647                         .type = MLX5_RTE_FLOW_ACTION_TYPE_TAG,
3648                         .conf = set_tag,
3649                 };
3650         }
3651         /* JUMP action to jump to mreg copy table (CP_TBL). */
3652         jump = (void *)(set_tag + 1);
3653         *jump = (struct rte_flow_action_jump){
3654                 .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
3655         };
3656         split_actions[actions_n - 2] = (struct rte_flow_action){
3657                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
3658                 .conf = jump,
3659         };
3660         split_actions[actions_n - 1] = (struct rte_flow_action){
3661                 .type = RTE_FLOW_ACTION_TYPE_END,
3662         };
3663         return flow_id;
3664 }
3665
3666 /**
3667  * Extend the given action list for Tx metadata copy.
3668  *
3669  * Copy the given action list to the ext_actions and add flow metadata register
3670  * copy action in order to copy reg_a set by WQE to reg_c[0].
3671  *
3672  * @param[out] ext_actions
3673  *   Pointer to the extended action list.
3674  * @param[in] actions
3675  *   Pointer to the list of actions.
3676  * @param[in] actions_n
3677  *   Number of actions in the list.
3678  * @param[out] error
3679  *   Perform verbose error reporting if not NULL.
3680  *
3681  * @return
3682  *   0 on success, negative value otherwise
3683  */
3684 static int
3685 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
3686                        struct rte_flow_action *ext_actions,
3687                        const struct rte_flow_action *actions,
3688                        int actions_n, struct rte_flow_error *error)
3689 {
3690         struct mlx5_flow_action_copy_mreg *cp_mreg =
3691                 (struct mlx5_flow_action_copy_mreg *)
3692                         (ext_actions + actions_n + 1);
3693         int ret;
3694
3695         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_RX, 0, error);
3696         if (ret < 0)
3697                 return ret;
3698         cp_mreg->dst = ret;
3699         ret = mlx5_flow_get_reg_id(dev, MLX5_METADATA_TX, 0, error);
3700         if (ret < 0)
3701                 return ret;
3702         cp_mreg->src = ret;
3703         memcpy(ext_actions, actions,
3704                         sizeof(*ext_actions) * actions_n);
3705         ext_actions[actions_n - 1] = (struct rte_flow_action){
3706                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
3707                 .conf = cp_mreg,
3708         };
3709         ext_actions[actions_n] = (struct rte_flow_action){
3710                 .type = RTE_FLOW_ACTION_TYPE_END,
3711         };
3712         return 0;
3713 }
3714
3715 /**
3716  * The splitting for metadata feature.
3717  *
3718  * - Q/RSS action on NIC Rx should be split in order to pass by
3719  *   the mreg copy table (RX_CP_TBL) and then it jumps to the
3720  *   action table (RX_ACT_TBL) which has the split Q/RSS action.
3721  *
3722  * - All the actions on NIC Tx should have a mreg copy action to
3723  *   copy reg_a from WQE to reg_c[0].
3724  *
3725  * @param dev
3726  *   Pointer to Ethernet device.
3727  * @param[in] flow
3728  *   Parent flow structure pointer.
3729  * @param[in] attr
3730  *   Flow rule attributes.
3731  * @param[in] items
3732  *   Pattern specification (list terminated by the END pattern item).
3733  * @param[in] actions
3734  *   Associated actions (list terminated by the END action).
3735  * @param[in] external
3736  *   This flow rule is created by request external to PMD.
3737  * @param[out] error
3738  *   Perform verbose error reporting if not NULL.
3739  * @return
3740  *   0 on success, negative value otherwise
3741  */
3742 static int
3743 flow_create_split_metadata(struct rte_eth_dev *dev,
3744                            struct rte_flow *flow,
3745                            const struct rte_flow_attr *attr,
3746                            const struct rte_flow_item items[],
3747                            const struct rte_flow_action actions[],
3748                            bool external, struct rte_flow_error *error)
3749 {
3750         struct mlx5_priv *priv = dev->data->dev_private;
3751         struct mlx5_dev_config *config = &priv->config;
3752         const struct rte_flow_action *qrss = NULL;
3753         struct rte_flow_action *ext_actions = NULL;
3754         struct mlx5_flow *dev_flow = NULL;
3755         uint32_t qrss_id = 0;
3756         int mtr_sfx = 0;
3757         size_t act_size;
3758         int actions_n;
3759         int ret;
3760
3761         /* Check whether extensive metadata feature is engaged. */
3762         if (!config->dv_flow_en ||
3763             config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
3764             !mlx5_flow_ext_mreg_supported(dev))
3765                 return flow_create_split_inner(dev, flow, NULL, attr, items,
3766                                                actions, external, error);
3767         actions_n = flow_parse_qrss_action(actions, &qrss);
3768         if (qrss) {
3769                 /* Exclude hairpin flows from splitting. */
3770                 if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
3771                         const struct rte_flow_action_queue *queue;
3772
3773                         queue = qrss->conf;
3774                         if (mlx5_rxq_get_type(dev, queue->index) ==
3775                             MLX5_RXQ_TYPE_HAIRPIN)
3776                                 qrss = NULL;
3777                 } else if (qrss->type == RTE_FLOW_ACTION_TYPE_RSS) {
3778                         const struct rte_flow_action_rss *rss;
3779
3780                         rss = qrss->conf;
3781                         if (mlx5_rxq_get_type(dev, rss->queue[0]) ==
3782                             MLX5_RXQ_TYPE_HAIRPIN)
3783                                 qrss = NULL;
3784                 }
3785         }
3786         if (qrss) {
3787                 /* Check if it is in meter suffix table. */
3788                 mtr_sfx = attr->group == (attr->transfer ?
3789                           (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
3790                           MLX5_FLOW_TABLE_LEVEL_SUFFIX);
3791                 /*
3792                  * Q/RSS action on NIC Rx should be split in order to pass by
3793                  * the mreg copy table (RX_CP_TBL) and then it jumps to the
3794                  * action table (RX_ACT_TBL) which has the split Q/RSS action.
3795                  */
3796                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3797                            sizeof(struct rte_flow_action_set_tag) +
3798                            sizeof(struct rte_flow_action_jump);
3799                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3800                 if (!ext_actions)
3801                         return rte_flow_error_set(error, ENOMEM,
3802                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3803                                                   NULL, "no memory to split "
3804                                                   "metadata flow");
3805                 /*
3806                  * If we are the suffix flow of meter, tag already exist.
3807                  * Set the tag action to void.
3808                  */
3809                 if (mtr_sfx)
3810                         ext_actions[qrss - actions].type =
3811                                                 RTE_FLOW_ACTION_TYPE_VOID;
3812                 else
3813                         ext_actions[qrss - actions].type =
3814                                                 MLX5_RTE_FLOW_ACTION_TYPE_TAG;
3815                 /*
3816                  * Create the new actions list with removed Q/RSS action
3817                  * and appended set tag and jump to register copy table
3818                  * (RX_CP_TBL). We should preallocate unique tag ID here
3819                  * in advance, because it is needed for set tag action.
3820                  */
3821                 qrss_id = flow_mreg_split_qrss_prep(dev, ext_actions, actions,
3822                                                     qrss, actions_n, error);
3823                 if (!mtr_sfx && !qrss_id) {
3824                         ret = -rte_errno;
3825                         goto exit;
3826                 }
3827         } else if (attr->egress && !attr->transfer) {
3828                 /*
3829                  * All the actions on NIC Tx should have a metadata register
3830                  * copy action to copy reg_a from WQE to reg_c[meta]
3831                  */
3832                 act_size = sizeof(struct rte_flow_action) * (actions_n + 1) +
3833                            sizeof(struct mlx5_flow_action_copy_mreg);
3834                 ext_actions = rte_zmalloc(__func__, act_size, 0);
3835                 if (!ext_actions)
3836                         return rte_flow_error_set(error, ENOMEM,
3837                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3838                                                   NULL, "no memory to split "
3839                                                   "metadata flow");
3840                 /* Create the action list appended with copy register. */
3841                 ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
3842                                              actions_n, error);
3843                 if (ret < 0)
3844                         goto exit;
3845         }
3846         /* Add the unmodified original or prefix subflow. */
3847         ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
3848                                       ext_actions ? ext_actions : actions,
3849                                       external, error);
3850         if (ret < 0)
3851                 goto exit;
3852         assert(dev_flow);
3853         if (qrss) {
3854                 const struct rte_flow_attr q_attr = {
3855                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
3856                         .ingress = 1,
3857                 };
3858                 /* Internal PMD action to set register. */
3859                 struct mlx5_rte_flow_item_tag q_tag_spec = {
3860                         .data = qrss_id,
3861                         .id = 0,
3862                 };
3863                 struct rte_flow_item q_items[] = {
3864                         {
3865                                 .type = MLX5_RTE_FLOW_ITEM_TYPE_TAG,
3866                                 .spec = &q_tag_spec,
3867                                 .last = NULL,
3868                                 .mask = NULL,
3869                         },
3870                         {
3871                                 .type = RTE_FLOW_ITEM_TYPE_END,
3872                         },
3873                 };
3874                 struct rte_flow_action q_actions[] = {
3875                         {
3876                                 .type = qrss->type,
3877                                 .conf = qrss->conf,
3878                         },
3879                         {
3880                                 .type = RTE_FLOW_ACTION_TYPE_END,
3881                         },
3882                 };
3883                 uint64_t hash_fields = dev_flow->hash_fields;
3884
3885                 /*
3886                  * Configure the tag item only if there is no meter subflow.
3887                  * Since tag is already marked in the meter suffix subflow
3888                  * we can just use the meter suffix items as is.
3889                  */
3890                 if (qrss_id) {
3891                         /* Not meter subflow. */
3892                         assert(!mtr_sfx);
3893                         /*
3894                          * Put unique id in prefix flow due to it is destroyed
3895                          * after suffix flow and id will be freed after there
3896                          * is no actual flows with this id and identifier
3897                          * reallocation becomes possible (for example, for
3898                          * other flows in other threads).
3899                          */
3900                         dev_flow->qrss_id = qrss_id;
3901                         qrss_id = 0;
3902                         ret = mlx5_flow_get_reg_id(dev, MLX5_COPY_MARK, 0,
3903                                                    error);
3904                         if (ret < 0)
3905                                 goto exit;
3906                         q_tag_spec.id = ret;
3907                 }
3908                 dev_flow = NULL;
3909                 /* Add suffix subflow to execute Q/RSS. */
3910                 ret = flow_create_split_inner(dev, flow, &dev_flow,
3911                                               &q_attr, mtr_sfx ? items :
3912                                               q_items, q_actions,
3913                                               external, error);
3914                 if (ret < 0)
3915                         goto exit;
3916                 assert(dev_flow);
3917                 dev_flow->hash_fields = hash_fields;
3918         }
3919
3920 exit:
3921         /*
3922          * We do not destroy the partially created sub_flows in case of error.
3923          * These ones are included into parent flow list and will be destroyed
3924          * by flow_drv_destroy.
3925          */
3926         flow_qrss_free_id(dev, qrss_id);
3927         rte_free(ext_actions);
3928         return ret;
3929 }
3930
3931 /**
3932  * The splitting for meter feature.
3933  *
3934  * - The meter flow will be split to two flows as prefix and
3935  *   suffix flow. The packets make sense only it pass the prefix
3936  *   meter action.
3937  *
3938  * - Reg_C_5 is used for the packet to match betweend prefix and
3939  *   suffix flow.
3940  *
3941  * @param dev
3942  *   Pointer to Ethernet device.
3943  * @param[in] flow
3944  *   Parent flow structure pointer.
3945  * @param[in] attr
3946  *   Flow rule attributes.
3947  * @param[in] items
3948  *   Pattern specification (list terminated by the END pattern item).
3949  * @param[in] actions
3950  *   Associated actions (list terminated by the END action).
3951  * @param[in] external
3952  *   This flow rule is created by request external to PMD.
3953  * @param[out] error
3954  *   Perform verbose error reporting if not NULL.
3955  * @return
3956  *   0 on success, negative value otherwise
3957  */
3958 static int
3959 flow_create_split_meter(struct rte_eth_dev *dev,
3960                            struct rte_flow *flow,
3961                            const struct rte_flow_attr *attr,
3962                            const struct rte_flow_item items[],
3963                            const struct rte_flow_action actions[],
3964                            bool external, struct rte_flow_error *error)
3965 {
3966         struct mlx5_priv *priv = dev->data->dev_private;
3967         struct rte_flow_action *sfx_actions = NULL;
3968         struct rte_flow_action *pre_actions = NULL;
3969         struct rte_flow_item *sfx_items = NULL;
3970         const  struct rte_flow_item *sfx_port_id_item;
3971         struct mlx5_flow *dev_flow = NULL;
3972         struct rte_flow_attr sfx_attr = *attr;
3973         uint32_t mtr = 0;
3974         uint32_t mtr_tag_id = 0;
3975         size_t act_size;
3976         size_t item_size;
3977         int actions_n = 0;
3978         int ret;
3979
3980         if (priv->mtr_en)
3981                 actions_n = flow_check_meter_action(actions, &mtr);
3982         if (mtr) {
3983                 struct mlx5_rte_flow_item_tag *tag_spec;
3984                 struct mlx5_rte_flow_item_tag *tag_mask;
3985                 /* The five prefix actions: meter, decap, encap, tag, end. */
3986                 act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
3987                            sizeof(struct rte_flow_action_set_tag);
3988                 /* tag, end. */
3989 #define METER_SUFFIX_ITEM 3
3990                 item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
3991                             sizeof(struct mlx5_rte_flow_item_tag) * 2;
3992                 sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
3993                 if (!sfx_actions)
3994                         return rte_flow_error_set(error, ENOMEM,
3995                                                   RTE_FLOW_ERROR_TYPE_ACTION,
3996                                                   NULL, "no memory to split "
3997                                                   "meter flow");
3998                 pre_actions = sfx_actions + actions_n;
3999                 mtr_tag_id = flow_meter_split_prep(dev, actions, sfx_actions,
4000                                                      pre_actions);
4001                 if (!mtr_tag_id) {
4002                         ret = -rte_errno;
4003                         goto exit;
4004                 }
4005                 /* Add the prefix subflow. */
4006                 ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
4007                                                   pre_actions, external, error);
4008                 if (ret) {
4009                         ret = -rte_errno;
4010                         goto exit;
4011                 }
4012                 dev_flow->mtr_flow_id = mtr_tag_id;
4013                 /* Prepare the suffix flow match pattern. */
4014                 sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
4015                              act_size);
4016                 tag_spec = (struct mlx5_rte_flow_item_tag *)(sfx_items +
4017                             METER_SUFFIX_ITEM);
4018                 tag_spec->data = dev_flow->mtr_flow_id << MLX5_MTR_COLOR_BITS;
4019                 tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0,
4020                                                     error);
4021                 tag_mask = tag_spec + 1;
4022                 tag_mask->data = 0xffffff00;
4023                 sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
4024                 sfx_items->spec = tag_spec;
4025                 sfx_items->last = NULL;
4026                 sfx_items->mask = tag_mask;
4027                 sfx_items++;
4028                 sfx_port_id_item = find_port_id_item(items);
4029                 if (sfx_port_id_item) {
4030                         memcpy(sfx_items, sfx_port_id_item,
4031                                sizeof(*sfx_items));
4032                         sfx_items++;
4033                 }
4034                 sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
4035                 sfx_items -= sfx_port_id_item ? 2 : 1;
4036                 /* Setting the sfx group atrr. */
4037                 sfx_attr.group = sfx_attr.transfer ?
4038                                 (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
4039                                  MLX5_FLOW_TABLE_LEVEL_SUFFIX;
4040         }
4041         /* Add the prefix subflow. */
4042         ret = flow_create_split_metadata(dev, flow, &sfx_attr,
4043                                          sfx_items ? sfx_items : items,
4044                                          sfx_actions ? sfx_actions : actions,
4045                                          external, error);
4046 exit:
4047         if (sfx_actions)
4048                 rte_free(sfx_actions);
4049         return ret;
4050 }
4051
4052 /**
4053  * Split the flow to subflow set. The splitters might be linked
4054  * in the chain, like this:
4055  * flow_create_split_outer() calls:
4056  *   flow_create_split_meter() calls:
4057  *     flow_create_split_metadata(meter_subflow_0) calls:
4058  *       flow_create_split_inner(metadata_subflow_0)
4059  *       flow_create_split_inner(metadata_subflow_1)
4060  *       flow_create_split_inner(metadata_subflow_2)
4061  *     flow_create_split_metadata(meter_subflow_1) calls:
4062  *       flow_create_split_inner(metadata_subflow_0)
4063  *       flow_create_split_inner(metadata_subflow_1)
4064  *       flow_create_split_inner(metadata_subflow_2)
4065  *
4066  * This provide flexible way to add new levels of flow splitting.
4067  * The all of successfully created subflows are included to the
4068  * parent flow dev_flow list.
4069  *
4070  * @param dev
4071  *   Pointer to Ethernet device.
4072  * @param[in] flow
4073  *   Parent flow structure pointer.
4074  * @param[in] attr
4075  *   Flow rule attributes.
4076  * @param[in] items
4077  *   Pattern specification (list terminated by the END pattern item).
4078  * @param[in] actions
4079  *   Associated actions (list terminated by the END action).
4080  * @param[in] external
4081  *   This flow rule is created by request external to PMD.
4082  * @param[out] error
4083  *   Perform verbose error reporting if not NULL.
4084  * @return
4085  *   0 on success, negative value otherwise
4086  */
4087 static int
4088 flow_create_split_outer(struct rte_eth_dev *dev,
4089                         struct rte_flow *flow,
4090                         const struct rte_flow_attr *attr,
4091                         const struct rte_flow_item items[],
4092                         const struct rte_flow_action actions[],
4093                         bool external, struct rte_flow_error *error)
4094 {
4095         int ret;
4096
4097         ret = flow_create_split_meter(dev, flow, attr, items,
4098                                          actions, external, error);
4099         assert(ret <= 0);
4100         return ret;
4101 }
4102
4103 /**
4104  * Create a flow and add it to @p list.
4105  *
4106  * @param dev
4107  *   Pointer to Ethernet device.
4108  * @param list
4109  *   Pointer to a TAILQ flow list. If this parameter NULL,
4110  *   no list insertion occurred, flow is just created,
4111  *   this is caller's responsibility to track the
4112  *   created flow.
4113  * @param[in] attr
4114  *   Flow rule attributes.
4115  * @param[in] items
4116  *   Pattern specification (list terminated by the END pattern item).
4117  * @param[in] actions
4118  *   Associated actions (list terminated by the END action).
4119  * @param[in] external
4120  *   This flow rule is created by request external to PMD.
4121  * @param[out] error
4122  *   Perform verbose error reporting if not NULL.
4123  *
4124  * @return
4125  *   A flow on success, NULL otherwise and rte_errno is set.
4126  */
4127 static struct rte_flow *
4128 flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
4129                  const struct rte_flow_attr *attr,
4130                  const struct rte_flow_item items[],
4131                  const struct rte_flow_action actions[],
4132                  bool external, struct rte_flow_error *error)
4133 {
4134         struct mlx5_priv *priv = dev->data->dev_private;
4135         struct rte_flow *flow = NULL;
4136         struct mlx5_flow *dev_flow;
4137         const struct rte_flow_action_rss *rss;
4138         union {
4139                 struct rte_flow_expand_rss buf;
4140                 uint8_t buffer[2048];
4141         } expand_buffer;
4142         union {
4143                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4144                 uint8_t buffer[2048];
4145         } actions_rx;
4146         union {
4147                 struct rte_flow_action actions[MLX5_MAX_SPLIT_ACTIONS];
4148                 uint8_t buffer[2048];
4149         } actions_hairpin_tx;
4150         union {
4151                 struct rte_flow_item items[MLX5_MAX_SPLIT_ITEMS];
4152                 uint8_t buffer[2048];
4153         } items_tx;
4154         struct rte_flow_expand_rss *buf = &expand_buffer.buf;
4155         const struct rte_flow_action *p_actions_rx = actions;
4156         int ret;
4157         uint32_t i;
4158         uint32_t flow_size;
4159         int hairpin_flow = 0;
4160         uint32_t hairpin_id = 0;
4161         struct rte_flow_attr attr_tx = { .priority = 0 };
4162
4163         hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
4164         if (hairpin_flow > 0) {
4165                 if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
4166                         rte_errno = EINVAL;
4167                         return NULL;
4168                 }
4169                 flow_hairpin_split(dev, actions, actions_rx.actions,
4170                                    actions_hairpin_tx.actions, items_tx.items,
4171                                    &hairpin_id);
4172                 p_actions_rx = actions_rx.actions;
4173         }
4174         ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
4175                                 error);
4176         if (ret < 0)
4177                 goto error_before_flow;
4178         flow_size = sizeof(struct rte_flow);
4179         rss = flow_get_rss_action(p_actions_rx);
4180         if (rss)
4181                 flow_size += RTE_ALIGN_CEIL(rss->queue_num * sizeof(uint16_t),
4182                                             sizeof(void *));
4183         else
4184                 flow_size += RTE_ALIGN_CEIL(sizeof(uint16_t), sizeof(void *));
4185         flow = rte_calloc(__func__, 1, flow_size, 0);
4186         if (!flow) {
4187                 rte_errno = ENOMEM;
4188                 goto error_before_flow;
4189         }
4190         flow->drv_type = flow_get_drv_type(dev, attr);
4191         if (hairpin_id != 0)
4192                 flow->hairpin_flow_id = hairpin_id;
4193         assert(flow->drv_type > MLX5_FLOW_TYPE_MIN &&
4194                flow->drv_type < MLX5_FLOW_TYPE_MAX);
4195         flow->rss.queue = (void *)(flow + 1);
4196         if (rss) {
4197                 /*
4198                  * The following information is required by
4199                  * mlx5_flow_hashfields_adjust() in advance.
4200                  */
4201                 flow->rss.level = rss->level;
4202                 /* RSS type 0 indicates default RSS type (ETH_RSS_IP). */
4203                 flow->rss.types = !rss->types ? ETH_RSS_IP : rss->types;
4204         }
4205         LIST_INIT(&flow->dev_flows);
4206         if (rss && rss->types) {
4207                 unsigned int graph_root;
4208
4209                 graph_root = find_graph_root(items, rss->level);
4210                 ret = rte_flow_expand_rss(buf, sizeof(expand_buffer.buffer),
4211                                           items, rss->types,
4212                                           mlx5_support_expansion,
4213                                           graph_root);
4214                 assert(ret > 0 &&
4215                        (unsigned int)ret < sizeof(expand_buffer.buffer));
4216         } else {
4217                 buf->entries = 1;
4218                 buf->entry[0].pattern = (void *)(uintptr_t)items;
4219         }
4220         for (i = 0; i < buf->entries; ++i) {
4221                 /*
4222                  * The splitter may create multiple dev_flows,
4223                  * depending on configuration. In the simplest
4224                  * case it just creates unmodified original flow.
4225                  */
4226                 ret = flow_create_split_outer(dev, flow, attr,
4227                                               buf->entry[i].pattern,
4228                                               p_actions_rx, external,
4229                                               error);
4230                 if (ret < 0)
4231                         goto error;
4232         }
4233         /* Create the tx flow. */
4234         if (hairpin_flow) {
4235                 attr_tx.group = MLX5_HAIRPIN_TX_TABLE;
4236                 attr_tx.ingress = 0;
4237                 attr_tx.egress = 1;
4238                 dev_flow = flow_drv_prepare(flow, &attr_tx, items_tx.items,
4239                                             actions_hairpin_tx.actions, error);
4240                 if (!dev_flow)
4241                         goto error;
4242                 dev_flow->flow = flow;
4243                 dev_flow->external = 0;
4244                 LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
4245                 ret = flow_drv_translate(dev, dev_flow, &attr_tx,
4246                                          items_tx.items,
4247                                          actions_hairpin_tx.actions, error);
4248                 if (ret < 0)
4249                         goto error;
4250         }
4251         /*
4252          * Update the metadata register copy table. If extensive
4253          * metadata feature is enabled and registers are supported
4254          * we might create the extra rte_flow for each unique
4255          * MARK/FLAG action ID.
4256          *
4257          * The table is updated for ingress Flows only, because
4258          * the egress Flows belong to the different device and
4259          * copy table should be updated in peer NIC Rx domain.
4260          */
4261         if (attr->ingress &&
4262             (external || attr->group != MLX5_FLOW_MREG_CP_TABLE_GROUP)) {
4263                 ret = flow_mreg_update_copy_table(dev, flow, actions, error);
4264                 if (ret)
4265                         goto error;
4266         }
4267         if (dev->data->dev_started) {
4268                 ret = flow_drv_apply(dev, flow, error);
4269                 if (ret < 0)
4270                         goto error;
4271         }
4272         if (list)
4273                 TAILQ_INSERT_TAIL(list, flow, next);
4274         flow_rxq_flags_set(dev, flow);
4275         return flow;
4276 error_before_flow:
4277         if (hairpin_id)
4278                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4279                                      hairpin_id);
4280         return NULL;
4281 error:
4282         assert(flow);
4283         flow_mreg_del_copy_action(dev, flow);
4284         ret = rte_errno; /* Save rte_errno before cleanup. */
4285         if (flow->hairpin_flow_id)
4286                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4287                                      flow->hairpin_flow_id);
4288         assert(flow);
4289         flow_drv_destroy(dev, flow);
4290         rte_free(flow);
4291         rte_errno = ret; /* Restore rte_errno. */
4292         return NULL;
4293 }
4294
4295 /**
4296  * Create a dedicated flow rule on e-switch table 0 (root table), to direct all
4297  * incoming packets to table 1.
4298  *
4299  * Other flow rules, requested for group n, will be created in
4300  * e-switch table n+1.
4301  * Jump action to e-switch group n will be created to group n+1.
4302  *
4303  * Used when working in switchdev mode, to utilise advantages of table 1
4304  * and above.
4305  *
4306  * @param dev
4307  *   Pointer to Ethernet device.
4308  *
4309  * @return
4310  *   Pointer to flow on success, NULL otherwise and rte_errno is set.
4311  */
4312 struct rte_flow *
4313 mlx5_flow_create_esw_table_zero_flow(struct rte_eth_dev *dev)
4314 {
4315         const struct rte_flow_attr attr = {
4316                 .group = 0,
4317                 .priority = 0,
4318                 .ingress = 1,
4319                 .egress = 0,
4320                 .transfer = 1,
4321         };
4322         const struct rte_flow_item pattern = {
4323                 .type = RTE_FLOW_ITEM_TYPE_END,
4324         };
4325         struct rte_flow_action_jump jump = {
4326                 .group = 1,
4327         };
4328         const struct rte_flow_action actions[] = {
4329                 {
4330                         .type = RTE_FLOW_ACTION_TYPE_JUMP,
4331                         .conf = &jump,
4332                 },
4333                 {
4334                         .type = RTE_FLOW_ACTION_TYPE_END,
4335                 },
4336         };
4337         struct mlx5_priv *priv = dev->data->dev_private;
4338         struct rte_flow_error error;
4339
4340         return flow_list_create(dev, &priv->ctrl_flows, &attr, &pattern,
4341                                 actions, false, &error);
4342 }
4343
4344 /**
4345  * Create a flow.
4346  *
4347  * @see rte_flow_create()
4348  * @see rte_flow_ops
4349  */
4350 struct rte_flow *
4351 mlx5_flow_create(struct rte_eth_dev *dev,
4352                  const struct rte_flow_attr *attr,
4353                  const struct rte_flow_item items[],
4354                  const struct rte_flow_action actions[],
4355                  struct rte_flow_error *error)
4356 {
4357         struct mlx5_priv *priv = dev->data->dev_private;
4358
4359         return flow_list_create(dev, &priv->flows,
4360                                 attr, items, actions, true, error);
4361 }
4362
4363 /**
4364  * Destroy a flow in a list.
4365  *
4366  * @param dev
4367  *   Pointer to Ethernet device.
4368  * @param list
4369  *   Pointer to a TAILQ flow list. If this parameter NULL,
4370  *   there is no flow removal from the list.
4371  * @param[in] flow
4372  *   Flow to destroy.
4373  */
4374 static void
4375 flow_list_destroy(struct rte_eth_dev *dev, struct mlx5_flows *list,
4376                   struct rte_flow *flow)
4377 {
4378         struct mlx5_priv *priv = dev->data->dev_private;
4379
4380         /*
4381          * Update RX queue flags only if port is started, otherwise it is
4382          * already clean.
4383          */
4384         if (dev->data->dev_started)
4385                 flow_rxq_flags_trim(dev, flow);
4386         if (flow->hairpin_flow_id)
4387                 mlx5_flow_id_release(priv->sh->flow_id_pool,
4388                                      flow->hairpin_flow_id);
4389         flow_drv_destroy(dev, flow);
4390         if (list)
4391                 TAILQ_REMOVE(list, flow, next);
4392         flow_mreg_del_copy_action(dev, flow);
4393         rte_free(flow->fdir);
4394         rte_free(flow);
4395 }
4396
4397 /**
4398  * Destroy all flows.
4399  *
4400  * @param dev
4401  *   Pointer to Ethernet device.
4402  * @param list
4403  *   Pointer to a TAILQ flow list.
4404  */
4405 void
4406 mlx5_flow_list_flush(struct rte_eth_dev *dev, struct mlx5_flows *list)
4407 {
4408         while (!TAILQ_EMPTY(list)) {
4409                 struct rte_flow *flow;
4410
4411                 flow = TAILQ_FIRST(list);
4412                 flow_list_destroy(dev, list, flow);
4413         }
4414 }
4415
4416 /**
4417  * Remove all flows.
4418  *
4419  * @param dev
4420  *   Pointer to Ethernet device.
4421  * @param list
4422  *   Pointer to a TAILQ flow list.
4423  */
4424 void
4425 mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows *list)
4426 {
4427         struct rte_flow *flow;
4428
4429         TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next) {
4430                 flow_drv_remove(dev, flow);
4431                 flow_mreg_stop_copy_action(dev, flow);
4432         }
4433         flow_mreg_del_default_copy_action(dev);
4434         flow_rxq_flags_clear(dev);
4435 }
4436
4437 /**
4438  * Add all flows.
4439  *
4440  * @param dev
4441  *   Pointer to Ethernet device.
4442  * @param list
4443  *   Pointer to a TAILQ flow list.
4444  *
4445  * @return
4446  *   0 on success, a negative errno value otherwise and rte_errno is set.
4447  */
4448 int
4449 mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
4450 {
4451         struct rte_flow *flow;
4452         struct rte_flow_error error;
4453         int ret = 0;
4454
4455         /* Make sure default copy action (reg_c[0] -> reg_b) is created. */
4456         ret = flow_mreg_add_default_copy_action(dev, &error);
4457         if (ret < 0)
4458                 return -rte_errno;
4459         /* Apply Flows created by application. */
4460         TAILQ_FOREACH(flow, list, next) {
4461                 ret = flow_mreg_start_copy_action(dev, flow);
4462                 if (ret < 0)
4463                         goto error;
4464                 ret = flow_drv_apply(dev, flow, &error);
4465                 if (ret < 0)
4466                         goto error;
4467                 flow_rxq_flags_set(dev, flow);
4468         }
4469         return 0;
4470 error:
4471         ret = rte_errno; /* Save rte_errno before cleanup. */
4472         mlx5_flow_stop(dev, list);
4473         rte_errno = ret; /* Restore rte_errno. */
4474         return -rte_errno;
4475 }
4476
4477 /**
4478  * Verify the flow list is empty
4479  *
4480  * @param dev
4481  *  Pointer to Ethernet device.
4482  *
4483  * @return the number of flows not released.
4484  */
4485 int
4486 mlx5_flow_verify(struct rte_eth_dev *dev)
4487 {
4488         struct mlx5_priv *priv = dev->data->dev_private;
4489         struct rte_flow *flow;
4490         int ret = 0;
4491
4492         TAILQ_FOREACH(flow, &priv->flows, next) {
4493                 DRV_LOG(DEBUG, "port %u flow %p still referenced",
4494                         dev->data->port_id, (void *)flow);
4495                 ++ret;
4496         }
4497         return ret;
4498 }
4499
4500 /**
4501  * Enable default hairpin egress flow.
4502  *
4503  * @param dev
4504  *   Pointer to Ethernet device.
4505  * @param queue
4506  *   The queue index.
4507  *
4508  * @return
4509  *   0 on success, a negative errno value otherwise and rte_errno is set.
4510  */
4511 int
4512 mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
4513                             uint32_t queue)
4514 {
4515         struct mlx5_priv *priv = dev->data->dev_private;
4516         const struct rte_flow_attr attr = {
4517                 .egress = 1,
4518                 .priority = 0,
4519         };
4520         struct mlx5_rte_flow_item_tx_queue queue_spec = {
4521                 .queue = queue,
4522         };
4523         struct mlx5_rte_flow_item_tx_queue queue_mask = {
4524                 .queue = UINT32_MAX,
4525         };
4526         struct rte_flow_item items[] = {
4527                 {
4528                         .type = MLX5_RTE_FLOW_ITEM_TYPE_TX_QUEUE,
4529                         .spec = &queue_spec,
4530                         .last = NULL,
4531                         .mask = &queue_mask,
4532                 },
4533                 {
4534                         .type = RTE_FLOW_ITEM_TYPE_END,
4535                 },
4536         };
4537         struct rte_flow_action_jump jump = {
4538                 .group = MLX5_HAIRPIN_TX_TABLE,
4539         };
4540         struct rte_flow_action actions[2];
4541         struct rte_flow *flow;
4542         struct rte_flow_error error;
4543
4544         actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
4545         actions[0].conf = &jump;
4546         actions[1].type = RTE_FLOW_ACTION_TYPE_END;
4547         flow = flow_list_create(dev, &priv->ctrl_flows,
4548                                 &attr, items, actions, false, &error);
4549         if (!flow) {
4550                 DRV_LOG(DEBUG,
4551                         "Failed to create ctrl flow: rte_errno(%d),"
4552                         " type(%d), message(%s)",
4553                         rte_errno, error.type,
4554                         error.message ? error.message : " (no stated reason)");
4555                 return -rte_errno;
4556         }
4557         return 0;
4558 }
4559
4560 /**
4561  * Enable a control flow configured from the control plane.
4562  *
4563  * @param dev
4564  *   Pointer to Ethernet device.
4565  * @param eth_spec
4566  *   An Ethernet flow spec to apply.
4567  * @param eth_mask
4568  *   An Ethernet flow mask to apply.
4569  * @param vlan_spec
4570  *   A VLAN flow spec to apply.
4571  * @param vlan_mask
4572  *   A VLAN flow mask to apply.
4573  *
4574  * @return
4575  *   0 on success, a negative errno value otherwise and rte_errno is set.
4576  */
4577 int
4578 mlx5_ctrl_flow_vlan(struct rte_eth_dev *dev,
4579                     struct rte_flow_item_eth *eth_spec,
4580                     struct rte_flow_item_eth *eth_mask,
4581                     struct rte_flow_item_vlan *vlan_spec,
4582                     struct rte_flow_item_vlan *vlan_mask)
4583 {
4584         struct mlx5_priv *priv = dev->data->dev_private;
4585         const struct rte_flow_attr attr = {
4586                 .ingress = 1,
4587                 .priority = MLX5_FLOW_PRIO_RSVD,
4588         };
4589         struct rte_flow_item items[] = {
4590                 {
4591                         .type = RTE_FLOW_ITEM_TYPE_ETH,
4592                         .spec = eth_spec,
4593                         .last = NULL,
4594                         .mask = eth_mask,
4595                 },
4596                 {
4597                         .type = (vlan_spec) ? RTE_FLOW_ITEM_TYPE_VLAN :
4598                                               RTE_FLOW_ITEM_TYPE_END,
4599                         .spec = vlan_spec,
4600                         .last = NULL,
4601                         .mask = vlan_mask,
4602                 },
4603                 {
4604                         .type = RTE_FLOW_ITEM_TYPE_END,
4605                 },
4606         };
4607         uint16_t queue[priv->reta_idx_n];
4608         struct rte_flow_action_rss action_rss = {
4609                 .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
4610                 .level = 0,
4611                 .types = priv->rss_conf.rss_hf,
4612                 .key_len = priv->rss_conf.rss_key_len,
4613                 .queue_num = priv->reta_idx_n,
4614                 .key = priv->rss_conf.rss_key,
4615                 .queue = queue,
4616         };
4617         struct rte_flow_action actions[] = {
4618                 {
4619                         .type = RTE_FLOW_ACTION_TYPE_RSS,
4620                         .conf = &action_rss,
4621                 },
4622                 {
4623                         .type = RTE_FLOW_ACTION_TYPE_END,
4624                 },
4625         };
4626         struct rte_flow *flow;
4627         struct rte_flow_error error;
4628         unsigned int i;
4629
4630         if (!priv->reta_idx_n || !priv->rxqs_n) {
4631                 return 0;
4632         }
4633         for (i = 0; i != priv->reta_idx_n; ++i)
4634                 queue[i] = (*priv->reta_idx)[i];
4635         flow = flow_list_create(dev, &priv->ctrl_flows,
4636                                 &attr, items, actions, false, &error);
4637         if (!flow)
4638                 return -rte_errno;
4639         return 0;
4640 }
4641
4642 /**
4643  * Enable a flow control configured from the control plane.
4644  *
4645  * @param dev
4646  *   Pointer to Ethernet device.
4647  * @param eth_spec
4648  *   An Ethernet flow spec to apply.
4649  * @param eth_mask
4650  *   An Ethernet flow mask to apply.
4651  *
4652  * @return
4653  *   0 on success, a negative errno value otherwise and rte_errno is set.
4654  */
4655 int
4656 mlx5_ctrl_flow(struct rte_eth_dev *dev,
4657                struct rte_flow_item_eth *eth_spec,
4658                struct rte_flow_item_eth *eth_mask)
4659 {
4660         return mlx5_ctrl_flow_vlan(dev, eth_spec, eth_mask, NULL, NULL);
4661 }
4662
4663 /**
4664  * Destroy a flow.
4665  *
4666  * @see rte_flow_destroy()
4667  * @see rte_flow_ops
4668  */
4669 int
4670 mlx5_flow_destroy(struct rte_eth_dev *dev,
4671                   struct rte_flow *flow,
4672                   struct rte_flow_error *error __rte_unused)
4673 {
4674         struct mlx5_priv *priv = dev->data->dev_private;
4675
4676         flow_list_destroy(dev, &priv->flows, flow);
4677         return 0;
4678 }
4679
4680 /**
4681  * Destroy all flows.
4682  *
4683  * @see rte_flow_flush()
4684  * @see rte_flow_ops
4685  */
4686 int
4687 mlx5_flow_flush(struct rte_eth_dev *dev,
4688                 struct rte_flow_error *error __rte_unused)
4689 {
4690         struct mlx5_priv *priv = dev->data->dev_private;
4691
4692         mlx5_flow_list_flush(dev, &priv->flows);
4693         return 0;
4694 }
4695
4696 /**
4697  * Isolated mode.
4698  *
4699  * @see rte_flow_isolate()
4700  * @see rte_flow_ops
4701  */
4702 int
4703 mlx5_flow_isolate(struct rte_eth_dev *dev,
4704                   int enable,
4705                   struct rte_flow_error *error)
4706 {
4707         struct mlx5_priv *priv = dev->data->dev_private;
4708
4709         if (dev->data->dev_started) {
4710                 rte_flow_error_set(error, EBUSY,
4711                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
4712                                    NULL,
4713                                    "port must be stopped first");
4714                 return -rte_errno;
4715         }
4716         priv->isolated = !!enable;
4717         if (enable)
4718                 dev->dev_ops = &mlx5_dev_ops_isolate;
4719         else
4720                 dev->dev_ops = &mlx5_dev_ops;
4721         return 0;
4722 }
4723
4724 /**
4725  * Query a flow.
4726  *
4727  * @see rte_flow_query()
4728  * @see rte_flow_ops
4729  */
4730 static int
4731 flow_drv_query(struct rte_eth_dev *dev,
4732                struct rte_flow *flow,
4733                const struct rte_flow_action *actions,
4734                void *data,
4735                struct rte_flow_error *error)
4736 {
4737         const struct mlx5_flow_driver_ops *fops;
4738         enum mlx5_flow_drv_type ftype = flow->drv_type;
4739
4740         assert(ftype > MLX5_FLOW_TYPE_MIN && ftype < MLX5_FLOW_TYPE_MAX);
4741         fops = flow_get_drv_ops(ftype);
4742
4743         return fops->query(dev, flow, actions, data, error);
4744 }
4745
4746 /**
4747  * Query a flow.
4748  *
4749  * @see rte_flow_query()
4750  * @see rte_flow_ops
4751  */
4752 int
4753 mlx5_flow_query(struct rte_eth_dev *dev,
4754                 struct rte_flow *flow,
4755                 const struct rte_flow_action *actions,
4756                 void *data,
4757                 struct rte_flow_error *error)
4758 {
4759         int ret;
4760
4761         ret = flow_drv_query(dev, flow, actions, data, error);
4762         if (ret < 0)
4763                 return ret;
4764         return 0;
4765 }
4766
4767 /**
4768  * Convert a flow director filter to a generic flow.
4769  *
4770  * @param dev
4771  *   Pointer to Ethernet device.
4772  * @param fdir_filter
4773  *   Flow director filter to add.
4774  * @param attributes
4775  *   Generic flow parameters structure.
4776  *
4777  * @return
4778  *   0 on success, a negative errno value otherwise and rte_errno is set.
4779  */
4780 static int
4781 flow_fdir_filter_convert(struct rte_eth_dev *dev,
4782                          const struct rte_eth_fdir_filter *fdir_filter,
4783                          struct mlx5_fdir *attributes)
4784 {
4785         struct mlx5_priv *priv = dev->data->dev_private;
4786         const struct rte_eth_fdir_input *input = &fdir_filter->input;
4787         const struct rte_eth_fdir_masks *mask =
4788                 &dev->data->dev_conf.fdir_conf.mask;
4789
4790         /* Validate queue number. */
4791         if (fdir_filter->action.rx_queue >= priv->rxqs_n) {
4792                 DRV_LOG(ERR, "port %u invalid queue number %d",
4793                         dev->data->port_id, fdir_filter->action.rx_queue);
4794                 rte_errno = EINVAL;
4795                 return -rte_errno;
4796         }
4797         attributes->attr.ingress = 1;
4798         attributes->items[0] = (struct rte_flow_item) {
4799                 .type = RTE_FLOW_ITEM_TYPE_ETH,
4800                 .spec = &attributes->l2,
4801                 .mask = &attributes->l2_mask,
4802         };
4803         switch (fdir_filter->action.behavior) {
4804         case RTE_ETH_FDIR_ACCEPT:
4805                 attributes->actions[0] = (struct rte_flow_action){
4806                         .type = RTE_FLOW_ACTION_TYPE_QUEUE,
4807                         .conf = &attributes->queue,
4808                 };
4809                 break;
4810         case RTE_ETH_FDIR_REJECT:
4811                 attributes->actions[0] = (struct rte_flow_action){
4812                         .type = RTE_FLOW_ACTION_TYPE_DROP,
4813                 };
4814                 break;
4815         default:
4816                 DRV_LOG(ERR, "port %u invalid behavior %d",
4817                         dev->data->port_id,
4818                         fdir_filter->action.behavior);
4819                 rte_errno = ENOTSUP;
4820                 return -rte_errno;
4821         }
4822         attributes->queue.index = fdir_filter->action.rx_queue;
4823         /* Handle L3. */
4824         switch (fdir_filter->input.flow_type) {
4825         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4826         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4827         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4828                 attributes->l3.ipv4.hdr = (struct rte_ipv4_hdr){
4829                         .src_addr = input->flow.ip4_flow.src_ip,
4830                         .dst_addr = input->flow.ip4_flow.dst_ip,
4831                         .time_to_live = input->flow.ip4_flow.ttl,
4832                         .type_of_service = input->flow.ip4_flow.tos,
4833                 };
4834                 attributes->l3_mask.ipv4.hdr = (struct rte_ipv4_hdr){
4835                         .src_addr = mask->ipv4_mask.src_ip,
4836                         .dst_addr = mask->ipv4_mask.dst_ip,
4837                         .time_to_live = mask->ipv4_mask.ttl,
4838                         .type_of_service = mask->ipv4_mask.tos,
4839                         .next_proto_id = mask->ipv4_mask.proto,
4840                 };
4841                 attributes->items[1] = (struct rte_flow_item){
4842                         .type = RTE_FLOW_ITEM_TYPE_IPV4,
4843                         .spec = &attributes->l3,
4844                         .mask = &attributes->l3_mask,
4845                 };
4846                 break;
4847         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4848         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4849         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4850                 attributes->l3.ipv6.hdr = (struct rte_ipv6_hdr){
4851                         .hop_limits = input->flow.ipv6_flow.hop_limits,
4852                         .proto = input->flow.ipv6_flow.proto,
4853                 };
4854
4855                 memcpy(attributes->l3.ipv6.hdr.src_addr,
4856                        input->flow.ipv6_flow.src_ip,
4857                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4858                 memcpy(attributes->l3.ipv6.hdr.dst_addr,
4859                        input->flow.ipv6_flow.dst_ip,
4860                        RTE_DIM(attributes->l3.ipv6.hdr.src_addr));
4861                 memcpy(attributes->l3_mask.ipv6.hdr.src_addr,
4862                        mask->ipv6_mask.src_ip,
4863                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4864                 memcpy(attributes->l3_mask.ipv6.hdr.dst_addr,
4865                        mask->ipv6_mask.dst_ip,
4866                        RTE_DIM(attributes->l3_mask.ipv6.hdr.src_addr));
4867                 attributes->items[1] = (struct rte_flow_item){
4868                         .type = RTE_FLOW_ITEM_TYPE_IPV6,
4869                         .spec = &attributes->l3,
4870                         .mask = &attributes->l3_mask,
4871                 };
4872                 break;
4873         default:
4874                 DRV_LOG(ERR, "port %u invalid flow type%d",
4875                         dev->data->port_id, fdir_filter->input.flow_type);
4876                 rte_errno = ENOTSUP;
4877                 return -rte_errno;
4878         }
4879         /* Handle L4. */
4880         switch (fdir_filter->input.flow_type) {
4881         case RTE_ETH_FLOW_NONFRAG_IPV4_UDP:
4882                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4883                         .src_port = input->flow.udp4_flow.src_port,
4884                         .dst_port = input->flow.udp4_flow.dst_port,
4885                 };
4886                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4887                         .src_port = mask->src_port_mask,
4888                         .dst_port = mask->dst_port_mask,
4889                 };
4890                 attributes->items[2] = (struct rte_flow_item){
4891                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4892                         .spec = &attributes->l4,
4893                         .mask = &attributes->l4_mask,
4894                 };
4895                 break;
4896         case RTE_ETH_FLOW_NONFRAG_IPV4_TCP:
4897                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4898                         .src_port = input->flow.tcp4_flow.src_port,
4899                         .dst_port = input->flow.tcp4_flow.dst_port,
4900                 };
4901                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4902                         .src_port = mask->src_port_mask,
4903                         .dst_port = mask->dst_port_mask,
4904                 };
4905                 attributes->items[2] = (struct rte_flow_item){
4906                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4907                         .spec = &attributes->l4,
4908                         .mask = &attributes->l4_mask,
4909                 };
4910                 break;
4911         case RTE_ETH_FLOW_NONFRAG_IPV6_UDP:
4912                 attributes->l4.udp.hdr = (struct rte_udp_hdr){
4913                         .src_port = input->flow.udp6_flow.src_port,
4914                         .dst_port = input->flow.udp6_flow.dst_port,
4915                 };
4916                 attributes->l4_mask.udp.hdr = (struct rte_udp_hdr){
4917                         .src_port = mask->src_port_mask,
4918                         .dst_port = mask->dst_port_mask,
4919                 };
4920                 attributes->items[2] = (struct rte_flow_item){
4921                         .type = RTE_FLOW_ITEM_TYPE_UDP,
4922                         .spec = &attributes->l4,
4923                         .mask = &attributes->l4_mask,
4924                 };
4925                 break;
4926         case RTE_ETH_FLOW_NONFRAG_IPV6_TCP:
4927                 attributes->l4.tcp.hdr = (struct rte_tcp_hdr){
4928                         .src_port = input->flow.tcp6_flow.src_port,
4929                         .dst_port = input->flow.tcp6_flow.dst_port,
4930                 };
4931                 attributes->l4_mask.tcp.hdr = (struct rte_tcp_hdr){
4932                         .src_port = mask->src_port_mask,
4933                         .dst_port = mask->dst_port_mask,
4934                 };
4935                 attributes->items[2] = (struct rte_flow_item){
4936                         .type = RTE_FLOW_ITEM_TYPE_TCP,
4937                         .spec = &attributes->l4,
4938                         .mask = &attributes->l4_mask,
4939                 };
4940                 break;
4941         case RTE_ETH_FLOW_NONFRAG_IPV4_OTHER:
4942         case RTE_ETH_FLOW_NONFRAG_IPV6_OTHER:
4943                 break;
4944         default:
4945                 DRV_LOG(ERR, "port %u invalid flow type%d",
4946                         dev->data->port_id, fdir_filter->input.flow_type);
4947                 rte_errno = ENOTSUP;
4948                 return -rte_errno;
4949         }
4950         return 0;
4951 }
4952
4953 #define FLOW_FDIR_CMP(f1, f2, fld) \
4954         memcmp(&(f1)->fld, &(f2)->fld, sizeof(f1->fld))
4955
4956 /**
4957  * Compare two FDIR flows. If items and actions are identical, the two flows are
4958  * regarded as same.
4959  *
4960  * @param dev
4961  *   Pointer to Ethernet device.
4962  * @param f1
4963  *   FDIR flow to compare.
4964  * @param f2
4965  *   FDIR flow to compare.
4966  *
4967  * @return
4968  *   Zero on match, 1 otherwise.
4969  */
4970 static int
4971 flow_fdir_cmp(const struct mlx5_fdir *f1, const struct mlx5_fdir *f2)
4972 {
4973         if (FLOW_FDIR_CMP(f1, f2, attr) ||
4974             FLOW_FDIR_CMP(f1, f2, l2) ||
4975             FLOW_FDIR_CMP(f1, f2, l2_mask) ||
4976             FLOW_FDIR_CMP(f1, f2, l3) ||
4977             FLOW_FDIR_CMP(f1, f2, l3_mask) ||
4978             FLOW_FDIR_CMP(f1, f2, l4) ||
4979             FLOW_FDIR_CMP(f1, f2, l4_mask) ||
4980             FLOW_FDIR_CMP(f1, f2, actions[0].type))
4981                 return 1;
4982         if (f1->actions[0].type == RTE_FLOW_ACTION_TYPE_QUEUE &&
4983             FLOW_FDIR_CMP(f1, f2, queue))
4984                 return 1;
4985         return 0;
4986 }
4987
4988 /**
4989  * Search device flow list to find out a matched FDIR flow.
4990  *
4991  * @param dev
4992  *   Pointer to Ethernet device.
4993  * @param fdir_flow
4994  *   FDIR flow to lookup.
4995  *
4996  * @return
4997  *   Pointer of flow if found, NULL otherwise.
4998  */
4999 static struct rte_flow *
5000 flow_fdir_filter_lookup(struct rte_eth_dev *dev, struct mlx5_fdir *fdir_flow)
5001 {
5002         struct mlx5_priv *priv = dev->data->dev_private;
5003         struct rte_flow *flow = NULL;
5004
5005         assert(fdir_flow);
5006         TAILQ_FOREACH(flow, &priv->flows, next) {
5007                 if (flow->fdir && !flow_fdir_cmp(flow->fdir, fdir_flow)) {
5008                         DRV_LOG(DEBUG, "port %u found FDIR flow %p",
5009                                 dev->data->port_id, (void *)flow);
5010                         break;
5011                 }
5012         }
5013         return flow;
5014 }
5015
5016 /**
5017  * Add new flow director filter and store it in list.
5018  *
5019  * @param dev
5020  *   Pointer to Ethernet device.
5021  * @param fdir_filter
5022  *   Flow director filter to add.
5023  *
5024  * @return
5025  *   0 on success, a negative errno value otherwise and rte_errno is set.
5026  */
5027 static int
5028 flow_fdir_filter_add(struct rte_eth_dev *dev,
5029                      const struct rte_eth_fdir_filter *fdir_filter)
5030 {
5031         struct mlx5_priv *priv = dev->data->dev_private;
5032         struct mlx5_fdir *fdir_flow;
5033         struct rte_flow *flow;
5034         int ret;
5035
5036         fdir_flow = rte_zmalloc(__func__, sizeof(*fdir_flow), 0);
5037         if (!fdir_flow) {
5038                 rte_errno = ENOMEM;
5039                 return -rte_errno;
5040         }
5041         ret = flow_fdir_filter_convert(dev, fdir_filter, fdir_flow);
5042         if (ret)
5043                 goto error;
5044         flow = flow_fdir_filter_lookup(dev, fdir_flow);
5045         if (flow) {
5046                 rte_errno = EEXIST;
5047                 goto error;
5048         }
5049         flow = flow_list_create(dev, &priv->flows, &fdir_flow->attr,
5050                                 fdir_flow->items, fdir_flow->actions, true,
5051                                 NULL);
5052         if (!flow)
5053                 goto error;
5054         assert(!flow->fdir);
5055         flow->fdir = fdir_flow;
5056         DRV_LOG(DEBUG, "port %u created FDIR flow %p",
5057                 dev->data->port_id, (void *)flow);
5058         return 0;
5059 error:
5060         rte_free(fdir_flow);
5061         return -rte_errno;
5062 }
5063
5064 /**
5065  * Delete specific filter.
5066  *
5067  * @param dev
5068  *   Pointer to Ethernet device.
5069  * @param fdir_filter
5070  *   Filter to be deleted.
5071  *
5072  * @return
5073  *   0 on success, a negative errno value otherwise and rte_errno is set.
5074  */
5075 static int
5076 flow_fdir_filter_delete(struct rte_eth_dev *dev,
5077                         const struct rte_eth_fdir_filter *fdir_filter)
5078 {
5079         struct mlx5_priv *priv = dev->data->dev_private;
5080         struct rte_flow *flow;
5081         struct mlx5_fdir fdir_flow = {
5082                 .attr.group = 0,
5083         };
5084         int ret;
5085
5086         ret = flow_fdir_filter_convert(dev, fdir_filter, &fdir_flow);
5087         if (ret)
5088                 return -rte_errno;
5089         flow = flow_fdir_filter_lookup(dev, &fdir_flow);
5090         if (!flow) {
5091                 rte_errno = ENOENT;
5092                 return -rte_errno;
5093         }
5094         flow_list_destroy(dev, &priv->flows, flow);
5095         DRV_LOG(DEBUG, "port %u deleted FDIR flow %p",
5096                 dev->data->port_id, (void *)flow);
5097         return 0;
5098 }
5099
5100 /**
5101  * Update queue for specific filter.
5102  *
5103  * @param dev
5104  *   Pointer to Ethernet device.
5105  * @param fdir_filter
5106  *   Filter to be updated.
5107  *
5108  * @return
5109  *   0 on success, a negative errno value otherwise and rte_errno is set.
5110  */
5111 static int
5112 flow_fdir_filter_update(struct rte_eth_dev *dev,
5113                         const struct rte_eth_fdir_filter *fdir_filter)
5114 {
5115         int ret;
5116
5117         ret = flow_fdir_filter_delete(dev, fdir_filter);
5118         if (ret)
5119                 return ret;
5120         return flow_fdir_filter_add(dev, fdir_filter);
5121 }
5122
5123 /**
5124  * Flush all filters.
5125  *
5126  * @param dev
5127  *   Pointer to Ethernet device.
5128  */
5129 static void
5130 flow_fdir_filter_flush(struct rte_eth_dev *dev)
5131 {
5132         struct mlx5_priv *priv = dev->data->dev_private;
5133
5134         mlx5_flow_list_flush(dev, &priv->flows);
5135 }
5136
5137 /**
5138  * Get flow director information.
5139  *
5140  * @param dev
5141  *   Pointer to Ethernet device.
5142  * @param[out] fdir_info
5143  *   Resulting flow director information.
5144  */
5145 static void
5146 flow_fdir_info_get(struct rte_eth_dev *dev, struct rte_eth_fdir_info *fdir_info)
5147 {
5148         struct rte_eth_fdir_masks *mask =
5149                 &dev->data->dev_conf.fdir_conf.mask;
5150
5151         fdir_info->mode = dev->data->dev_conf.fdir_conf.mode;
5152         fdir_info->guarant_spc = 0;
5153         rte_memcpy(&fdir_info->mask, mask, sizeof(fdir_info->mask));
5154         fdir_info->max_flexpayload = 0;
5155         fdir_info->flow_types_mask[0] = 0;
5156         fdir_info->flex_payload_unit = 0;
5157         fdir_info->max_flex_payload_segment_num = 0;
5158         fdir_info->flex_payload_limit = 0;
5159         memset(&fdir_info->flex_conf, 0, sizeof(fdir_info->flex_conf));
5160 }
5161
5162 /**
5163  * Deal with flow director operations.
5164  *
5165  * @param dev
5166  *   Pointer to Ethernet device.
5167  * @param filter_op
5168  *   Operation to perform.
5169  * @param arg
5170  *   Pointer to operation-specific structure.
5171  *
5172  * @return
5173  *   0 on success, a negative errno value otherwise and rte_errno is set.
5174  */
5175 static int
5176 flow_fdir_ctrl_func(struct rte_eth_dev *dev, enum rte_filter_op filter_op,
5177                     void *arg)
5178 {
5179         enum rte_fdir_mode fdir_mode =
5180                 dev->data->dev_conf.fdir_conf.mode;
5181
5182         if (filter_op == RTE_ETH_FILTER_NOP)
5183                 return 0;
5184         if (fdir_mode != RTE_FDIR_MODE_PERFECT &&
5185             fdir_mode != RTE_FDIR_MODE_PERFECT_MAC_VLAN) {
5186                 DRV_LOG(ERR, "port %u flow director mode %d not supported",
5187                         dev->data->port_id, fdir_mode);
5188                 rte_errno = EINVAL;
5189                 return -rte_errno;
5190         }
5191         switch (filter_op) {
5192         case RTE_ETH_FILTER_ADD:
5193                 return flow_fdir_filter_add(dev, arg);
5194         case RTE_ETH_FILTER_UPDATE:
5195                 return flow_fdir_filter_update(dev, arg);
5196         case RTE_ETH_FILTER_DELETE:
5197                 return flow_fdir_filter_delete(dev, arg);
5198         case RTE_ETH_FILTER_FLUSH:
5199                 flow_fdir_filter_flush(dev);
5200                 break;
5201         case RTE_ETH_FILTER_INFO:
5202                 flow_fdir_info_get(dev, arg);
5203                 break;
5204         default:
5205                 DRV_LOG(DEBUG, "port %u unknown operation %u",
5206                         dev->data->port_id, filter_op);
5207                 rte_errno = EINVAL;
5208                 return -rte_errno;
5209         }
5210         return 0;
5211 }
5212
5213 /**
5214  * Manage filter operations.
5215  *
5216  * @param dev
5217  *   Pointer to Ethernet device structure.
5218  * @param filter_type
5219  *   Filter type.
5220  * @param filter_op
5221  *   Operation to perform.
5222  * @param arg
5223  *   Pointer to operation-specific structure.
5224  *
5225  * @return
5226  *   0 on success, a negative errno value otherwise and rte_errno is set.
5227  */
5228 int
5229 mlx5_dev_filter_ctrl(struct rte_eth_dev *dev,
5230                      enum rte_filter_type filter_type,
5231                      enum rte_filter_op filter_op,
5232                      void *arg)
5233 {
5234         switch (filter_type) {
5235         case RTE_ETH_FILTER_GENERIC:
5236                 if (filter_op != RTE_ETH_FILTER_GET) {
5237                         rte_errno = EINVAL;
5238                         return -rte_errno;
5239                 }
5240                 *(const void **)arg = &mlx5_flow_ops;
5241                 return 0;
5242         case RTE_ETH_FILTER_FDIR:
5243                 return flow_fdir_ctrl_func(dev, filter_op, arg);
5244         default:
5245                 DRV_LOG(ERR, "port %u filter type (%d) not supported",
5246                         dev->data->port_id, filter_type);
5247                 rte_errno = ENOTSUP;
5248                 return -rte_errno;
5249         }
5250         return 0;
5251 }
5252
5253 /**
5254  * Create the needed meter and suffix tables.
5255  *
5256  * @param[in] dev
5257  *   Pointer to Ethernet device.
5258  * @param[in] fm
5259  *   Pointer to the flow meter.
5260  *
5261  * @return
5262  *   Pointer to table set on success, NULL otherwise.
5263  */
5264 struct mlx5_meter_domains_infos *
5265 mlx5_flow_create_mtr_tbls(struct rte_eth_dev *dev,
5266                           const struct mlx5_flow_meter *fm)
5267 {
5268         const struct mlx5_flow_driver_ops *fops;
5269
5270         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5271         return fops->create_mtr_tbls(dev, fm);
5272 }
5273
5274 /**
5275  * Destroy the meter table set.
5276  *
5277  * @param[in] dev
5278  *   Pointer to Ethernet device.
5279  * @param[in] tbl
5280  *   Pointer to the meter table set.
5281  *
5282  * @return
5283  *   0 on success.
5284  */
5285 int
5286 mlx5_flow_destroy_mtr_tbls(struct rte_eth_dev *dev,
5287                            struct mlx5_meter_domains_infos *tbls)
5288 {
5289         const struct mlx5_flow_driver_ops *fops;
5290
5291         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5292         return fops->destroy_mtr_tbls(dev, tbls);
5293 }
5294
5295 /**
5296  * Create policer rules.
5297  *
5298  * @param[in] dev
5299  *   Pointer to Ethernet device.
5300  * @param[in] fm
5301  *   Pointer to flow meter structure.
5302  * @param[in] attr
5303  *   Pointer to flow attributes.
5304  *
5305  * @return
5306  *   0 on success, -1 otherwise.
5307  */
5308 int
5309 mlx5_flow_create_policer_rules(struct rte_eth_dev *dev,
5310                                struct mlx5_flow_meter *fm,
5311                                const struct rte_flow_attr *attr)
5312 {
5313         const struct mlx5_flow_driver_ops *fops;
5314
5315         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5316         return fops->create_policer_rules(dev, fm, attr);
5317 }
5318
5319 /**
5320  * Destroy policer rules.
5321  *
5322  * @param[in] fm
5323  *   Pointer to flow meter structure.
5324  * @param[in] attr
5325  *   Pointer to flow attributes.
5326  *
5327  * @return
5328  *   0 on success, -1 otherwise.
5329  */
5330 int
5331 mlx5_flow_destroy_policer_rules(struct rte_eth_dev *dev,
5332                                 struct mlx5_flow_meter *fm,
5333                                 const struct rte_flow_attr *attr)
5334 {
5335         const struct mlx5_flow_driver_ops *fops;
5336
5337         fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5338         return fops->destroy_policer_rules(dev, fm, attr);
5339 }
5340
5341 /**
5342  * Allocate a counter.
5343  *
5344  * @param[in] dev
5345  *   Pointer to Ethernet device structure.
5346  *
5347  * @return
5348  *   Pointer to allocated counter  on success, NULL otherwise.
5349  */
5350 struct mlx5_flow_counter *
5351 mlx5_counter_alloc(struct rte_eth_dev *dev)
5352 {
5353         const struct mlx5_flow_driver_ops *fops;
5354         struct rte_flow_attr attr = { .transfer = 0 };
5355
5356         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5357                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5358                 return fops->counter_alloc(dev);
5359         }
5360         DRV_LOG(ERR,
5361                 "port %u counter allocate is not supported.",
5362                  dev->data->port_id);
5363         return NULL;
5364 }
5365
5366 /**
5367  * Free a counter.
5368  *
5369  * @param[in] dev
5370  *   Pointer to Ethernet device structure.
5371  * @param[in] cnt
5372  *   Pointer to counter to be free.
5373  */
5374 void
5375 mlx5_counter_free(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt)
5376 {
5377         const struct mlx5_flow_driver_ops *fops;
5378         struct rte_flow_attr attr = { .transfer = 0 };
5379
5380         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5381                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5382                 fops->counter_free(dev, cnt);
5383                 return;
5384         }
5385         DRV_LOG(ERR,
5386                 "port %u counter free is not supported.",
5387                  dev->data->port_id);
5388 }
5389
5390 /**
5391  * Query counter statistics.
5392  *
5393  * @param[in] dev
5394  *   Pointer to Ethernet device structure.
5395  * @param[in] cnt
5396  *   Pointer to counter to query.
5397  * @param[in] clear
5398  *   Set to clear counter statistics.
5399  * @param[out] pkts
5400  *   The counter hits packets number to save.
5401  * @param[out] bytes
5402  *   The counter hits bytes number to save.
5403  *
5404  * @return
5405  *   0 on success, a negative errno value otherwise.
5406  */
5407 int
5408 mlx5_counter_query(struct rte_eth_dev *dev, struct mlx5_flow_counter *cnt,
5409                    bool clear, uint64_t *pkts, uint64_t *bytes)
5410 {
5411         const struct mlx5_flow_driver_ops *fops;
5412         struct rte_flow_attr attr = { .transfer = 0 };
5413
5414         if (flow_get_drv_type(dev, &attr) == MLX5_FLOW_TYPE_DV) {
5415                 fops = flow_get_drv_ops(MLX5_FLOW_TYPE_DV);
5416                 return fops->counter_query(dev, cnt, clear, pkts, bytes);
5417         }
5418         DRV_LOG(ERR,
5419                 "port %u counter query is not supported.",
5420                  dev->data->port_id);
5421         return -ENOTSUP;
5422 }
5423
5424 #define MLX5_POOL_QUERY_FREQ_US 1000000
5425
5426 /**
5427  * Set the periodic procedure for triggering asynchronous batch queries for all
5428  * the counter pools.
5429  *
5430  * @param[in] sh
5431  *   Pointer to mlx5_ibv_shared object.
5432  */
5433 void
5434 mlx5_set_query_alarm(struct mlx5_ibv_shared *sh)
5435 {
5436         struct mlx5_pools_container *cont = MLX5_CNT_CONTAINER(sh, 0, 0);
5437         uint32_t pools_n = rte_atomic16_read(&cont->n_valid);
5438         uint32_t us;
5439
5440         cont = MLX5_CNT_CONTAINER(sh, 1, 0);
5441         pools_n += rte_atomic16_read(&cont->n_valid);
5442         us = MLX5_POOL_QUERY_FREQ_US / pools_n;
5443         DRV_LOG(DEBUG, "Set alarm for %u pools each %u us", pools_n, us);
5444         if (rte_eal_alarm_set(us, mlx5_flow_query_alarm, sh)) {
5445                 sh->cmng.query_thread_on = 0;
5446                 DRV_LOG(ERR, "Cannot reinitialize query alarm");
5447         } else {
5448                 sh->cmng.query_thread_on = 1;
5449         }
5450 }
5451
5452 /**
5453  * The periodic procedure for triggering asynchronous batch queries for all the
5454  * counter pools. This function is probably called by the host thread.
5455  *
5456  * @param[in] arg
5457  *   The parameter for the alarm process.
5458  */
5459 void
5460 mlx5_flow_query_alarm(void *arg)
5461 {
5462         struct mlx5_ibv_shared *sh = arg;
5463         struct mlx5_devx_obj *dcs;
5464         uint16_t offset;
5465         int ret;
5466         uint8_t batch = sh->cmng.batch;
5467         uint16_t pool_index = sh->cmng.pool_index;
5468         struct mlx5_pools_container *cont;
5469         struct mlx5_pools_container *mcont;
5470         struct mlx5_flow_counter_pool *pool;
5471
5472         if (sh->cmng.pending_queries >= MLX5_MAX_PENDING_QUERIES)
5473                 goto set_alarm;
5474 next_container:
5475         cont = MLX5_CNT_CONTAINER(sh, batch, 1);
5476         mcont = MLX5_CNT_CONTAINER(sh, batch, 0);
5477         /* Check if resize was done and need to flip a container. */
5478         if (cont != mcont) {
5479                 if (cont->pools) {
5480                         /* Clean the old container. */
5481                         rte_free(cont->pools);
5482                         memset(cont, 0, sizeof(*cont));
5483                 }
5484                 rte_cio_wmb();
5485                  /* Flip the host container. */
5486                 sh->cmng.mhi[batch] ^= (uint8_t)2;
5487                 cont = mcont;
5488         }
5489         if (!cont->pools) {
5490                 /* 2 empty containers case is unexpected. */
5491                 if (unlikely(batch != sh->cmng.batch))
5492                         goto set_alarm;
5493                 batch ^= 0x1;
5494                 pool_index = 0;
5495                 goto next_container;
5496         }
5497         pool = cont->pools[pool_index];
5498         if (pool->raw_hw)
5499                 /* There is a pool query in progress. */
5500                 goto set_alarm;
5501         pool->raw_hw =
5502                 LIST_FIRST(&sh->cmng.free_stat_raws);
5503         if (!pool->raw_hw)
5504                 /* No free counter statistics raw memory. */
5505                 goto set_alarm;
5506         dcs = (struct mlx5_devx_obj *)(uintptr_t)rte_atomic64_read
5507                                                               (&pool->a64_dcs);
5508         offset = batch ? 0 : dcs->id % MLX5_COUNTERS_PER_POOL;
5509         ret = mlx5_devx_cmd_flow_counter_query(dcs, 0, MLX5_COUNTERS_PER_POOL -
5510                                                offset, NULL, NULL,
5511                                                pool->raw_hw->mem_mng->dm->id,
5512                                                (void *)(uintptr_t)
5513                                                (pool->raw_hw->data + offset),
5514                                                sh->devx_comp,
5515                                                (uint64_t)(uintptr_t)pool);
5516         if (ret) {
5517                 DRV_LOG(ERR, "Failed to trigger asynchronous query for dcs ID"
5518                         " %d", pool->min_dcs->id);
5519                 pool->raw_hw = NULL;
5520                 goto set_alarm;
5521         }
5522         pool->raw_hw->min_dcs_id = dcs->id;
5523         LIST_REMOVE(pool->raw_hw, next);
5524         sh->cmng.pending_queries++;
5525         pool_index++;
5526         if (pool_index >= rte_atomic16_read(&cont->n_valid)) {
5527                 batch ^= 0x1;
5528                 pool_index = 0;
5529         }
5530 set_alarm:
5531         sh->cmng.batch = batch;
5532         sh->cmng.pool_index = pool_index;
5533         mlx5_set_query_alarm(sh);
5534 }
5535
5536 /**
5537  * Handler for the HW respond about ready values from an asynchronous batch
5538  * query. This function is probably called by the host thread.
5539  *
5540  * @param[in] sh
5541  *   The pointer to the shared IB device context.
5542  * @param[in] async_id
5543  *   The Devx async ID.
5544  * @param[in] status
5545  *   The status of the completion.
5546  */
5547 void
5548 mlx5_flow_async_pool_query_handle(struct mlx5_ibv_shared *sh,
5549                                   uint64_t async_id, int status)
5550 {
5551         struct mlx5_flow_counter_pool *pool =
5552                 (struct mlx5_flow_counter_pool *)(uintptr_t)async_id;
5553         struct mlx5_counter_stats_raw *raw_to_free;
5554
5555         if (unlikely(status)) {
5556                 raw_to_free = pool->raw_hw;
5557         } else {
5558                 raw_to_free = pool->raw;
5559                 rte_spinlock_lock(&pool->sl);
5560                 pool->raw = pool->raw_hw;
5561                 rte_spinlock_unlock(&pool->sl);
5562                 rte_atomic64_add(&pool->query_gen, 1);
5563                 /* Be sure the new raw counters data is updated in memory. */
5564                 rte_cio_wmb();
5565         }
5566         LIST_INSERT_HEAD(&sh->cmng.free_stat_raws, raw_to_free, next);
5567         pool->raw_hw = NULL;
5568         sh->cmng.pending_queries--;
5569 }
5570
5571 /**
5572  * Translate the rte_flow group index to HW table value.
5573  *
5574  * @param[in] attributes
5575  *   Pointer to flow attributes
5576  * @param[in] external
5577  *   Value is part of flow rule created by request external to PMD.
5578  * @param[in] group
5579  *   rte_flow group index value.
5580  * @param[out] table
5581  *   HW table value.
5582  * @param[out] error
5583  *   Pointer to error structure.
5584  *
5585  * @return
5586  *   0 on success, a negative errno value otherwise and rte_errno is set.
5587  */
5588 int
5589 mlx5_flow_group_to_table(const struct rte_flow_attr *attributes, bool external,
5590                          uint32_t group, uint32_t *table,
5591                          struct rte_flow_error *error)
5592 {
5593         if (attributes->transfer && external) {
5594                 if (group == UINT32_MAX)
5595                         return rte_flow_error_set
5596                                                 (error, EINVAL,
5597                                                  RTE_FLOW_ERROR_TYPE_ATTR_GROUP,
5598                                                  NULL,
5599                                                  "group index not supported");
5600                 *table = group + 1;
5601         } else {
5602                 *table = group;
5603         }
5604         return 0;
5605 }
5606
5607 /**
5608  * Discover availability of metadata reg_c's.
5609  *
5610  * Iteratively use test flows to check availability.
5611  *
5612  * @param[in] dev
5613  *   Pointer to the Ethernet device structure.
5614  *
5615  * @return
5616  *   0 on success, a negative errno value otherwise and rte_errno is set.
5617  */
5618 int
5619 mlx5_flow_discover_mreg_c(struct rte_eth_dev *dev)
5620 {
5621         struct mlx5_priv *priv = dev->data->dev_private;
5622         struct mlx5_dev_config *config = &priv->config;
5623         enum modify_reg idx;
5624         int n = 0;
5625
5626         /* reg_c[0] and reg_c[1] are reserved. */
5627         config->flow_mreg_c[n++] = REG_C_0;
5628         config->flow_mreg_c[n++] = REG_C_1;
5629         /* Discover availability of other reg_c's. */
5630         for (idx = REG_C_2; idx <= REG_C_7; ++idx) {
5631                 struct rte_flow_attr attr = {
5632                         .group = MLX5_FLOW_MREG_CP_TABLE_GROUP,
5633                         .priority = MLX5_FLOW_PRIO_RSVD,
5634                         .ingress = 1,
5635                 };
5636                 struct rte_flow_item items[] = {
5637                         [0] = {
5638                                 .type = RTE_FLOW_ITEM_TYPE_END,
5639                         },
5640                 };
5641                 struct rte_flow_action actions[] = {
5642                         [0] = {
5643                                 .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
5644                                 .conf = &(struct mlx5_flow_action_copy_mreg){
5645                                         .src = REG_C_1,
5646                                         .dst = idx,
5647                                 },
5648                         },
5649                         [1] = {
5650                                 .type = RTE_FLOW_ACTION_TYPE_JUMP,
5651                                 .conf = &(struct rte_flow_action_jump){
5652                                         .group = MLX5_FLOW_MREG_ACT_TABLE_GROUP,
5653                                 },
5654                         },
5655                         [2] = {
5656                                 .type = RTE_FLOW_ACTION_TYPE_END,
5657                         },
5658                 };
5659                 struct rte_flow *flow;
5660                 struct rte_flow_error error;
5661
5662                 if (!config->dv_flow_en)
5663                         break;
5664                 /* Create internal flow, validation skips copy action. */
5665                 flow = flow_list_create(dev, NULL, &attr, items,
5666                                         actions, false, &error);
5667                 if (!flow)
5668                         continue;
5669                 if (dev->data->dev_started || !flow_drv_apply(dev, flow, NULL))
5670                         config->flow_mreg_c[n++] = idx;
5671                 flow_list_destroy(dev, NULL, flow);
5672         }
5673         for (; n < MLX5_MREG_C_NUM; ++n)
5674                 config->flow_mreg_c[n] = REG_NONE;
5675         return 0;
5676 }
5677
5678 /**
5679  * Dump flow raw hw data to file
5680  *
5681  * @param[in] dev
5682  *    The pointer to Ethernet device.
5683  * @param[in] file
5684  *   A pointer to a file for output.
5685  * @param[out] error
5686  *   Perform verbose error reporting if not NULL. PMDs initialize this
5687  *   structure in case of error only.
5688  * @return
5689  *   0 on success, a nagative value otherwise.
5690  */
5691 int
5692 mlx5_flow_dev_dump(struct rte_eth_dev *dev,
5693                    FILE *file,
5694                    struct rte_flow_error *error __rte_unused)
5695 {
5696         struct mlx5_priv *priv = dev->data->dev_private;
5697         struct mlx5_ibv_shared *sh = priv->sh;
5698
5699         return mlx5_devx_cmd_flow_dump(sh->fdb_domain, sh->rx_domain,
5700                                        sh->tx_domain, file);
5701 }