net/mlx5: fix validation of VXLAN/VXLAN-GPE specs
[dpdk.git] / drivers / net / mlx5 / mlx5_flow.c
index 144e07c..2ef6558 100644 (file)
@@ -167,7 +167,9 @@ static const struct rte_flow_expand_node mlx5_support_expansion[] = {
                .rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
        },
        [MLX5_EXPANSION_VXLAN] = {
-               .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
+               .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH,
+                                                MLX5_EXPANSION_IPV4,
+                                                MLX5_EXPANSION_IPV6),
                .type = RTE_FLOW_ITEM_TYPE_VXLAN,
        },
        [MLX5_EXPANSION_VXLAN_GPE] = {
@@ -1638,7 +1640,6 @@ mlx5_flow_validate_item_ipv6(const struct rte_flow_item *item,
                                "\xff\xff\xff\xff\xff\xff\xff\xff",
                        .vtc_flow = RTE_BE32(0xffffffff),
                        .proto = 0xff,
-                       .hop_limits = 0xff,
                },
        };
        const int tunnel = !!(item_flags & MLX5_FLOW_LAYER_TUNNEL);
@@ -1835,7 +1836,6 @@ mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
                uint32_t vlan_id;
                uint8_t vni[4];
        } id = { .vlan_id = 0, };
-       uint32_t vlan_id = 0;
 
 
        if (item_flags & MLX5_FLOW_LAYER_TUNNEL)
@@ -1862,23 +1862,8 @@ mlx5_flow_validate_item_vxlan(const struct rte_flow_item *item,
                return ret;
        if (spec) {
                memcpy(&id.vni[1], spec->vni, 3);
-               vlan_id = id.vlan_id;
                memcpy(&id.vni[1], mask->vni, 3);
-               vlan_id &= id.vlan_id;
        }
-       /*
-        * Tunnel id 0 is equivalent as not adding a VXLAN layer, if
-        * only this layer is defined in the Verbs specification it is
-        * interpreted as wildcard and all packets will match this
-        * rule, if it follows a full stack layer (ex: eth / ipv4 /
-        * udp), all packets matching the layers before will also
-        * match this rule.  To avoid such situation, VNI 0 is
-        * currently refused.
-        */
-       if (!vlan_id)
-               return rte_flow_error_set(error, ENOTSUP,
-                                         RTE_FLOW_ERROR_TYPE_ITEM, item,
-                                         "VXLAN vni cannot be 0");
        if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
@@ -1917,7 +1902,6 @@ mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
                uint32_t vlan_id;
                uint8_t vni[4];
        } id = { .vlan_id = 0, };
-       uint32_t vlan_id = 0;
 
        if (!priv->config.l3_vxlan_en)
                return rte_flow_error_set(error, ENOTSUP,
@@ -1955,22 +1939,8 @@ mlx5_flow_validate_item_vxlan_gpe(const struct rte_flow_item *item,
                                                  "VxLAN-GPE protocol"
                                                  " not supported");
                memcpy(&id.vni[1], spec->vni, 3);
-               vlan_id = id.vlan_id;
                memcpy(&id.vni[1], mask->vni, 3);
-               vlan_id &= id.vlan_id;
        }
-       /*
-        * Tunnel id 0 is equivalent as not adding a VXLAN layer, if only this
-        * layer is defined in the Verbs specification it is interpreted as
-        * wildcard and all packets will match this rule, if it follows a full
-        * stack layer (ex: eth / ipv4 / udp), all packets matching the layers
-        * before will also match this rule.  To avoid such situation, VNI 0
-        * is currently refused.
-        */
-       if (!vlan_id)
-               return rte_flow_error_set(error, ENOTSUP,
-                                         RTE_FLOW_ERROR_TYPE_ITEM, item,
-                                         "VXLAN-GPE vni cannot be 0");
        if (!(item_flags & MLX5_FLOW_LAYER_OUTER))
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
@@ -2135,9 +2105,7 @@ mlx5_flow_validate_item_geneve(const struct rte_flow_item *item,
                .protocol = RTE_BE16(UINT16_MAX),
        };
 
-       if (!(priv->config.hca_attr.flex_parser_protocols &
-             MLX5_HCA_FLEX_GENEVE_ENABLED) ||
-           !priv->config.hca_attr.tunnel_stateless_geneve_rx)
+       if (!priv->config.hca_attr.tunnel_stateless_geneve_rx)
                return rte_flow_error_set(error, ENOTSUP,
                                          RTE_FLOW_ERROR_TYPE_ITEM, item,
                                          "L3 Geneve is not enabled by device"
@@ -2663,26 +2631,6 @@ mlx5_flow_validate(struct rte_eth_dev *dev,
        return 0;
 }
 
-/**
- * Get port id item from the item list.
- *
- * @param[in] item
- *   Pointer to the list of items.
- *
- * @return
- *   Pointer to the port id item if exist, else return NULL.
- */
-static const struct rte_flow_item *
-find_port_id_item(const struct rte_flow_item *item)
-{
-       MLX5_ASSERT(item);
-       for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
-               if (item->type == RTE_FLOW_ITEM_TYPE_PORT_ID)
-                       return item;
-       }
-       return NULL;
-}
-
 /**
  * Get RSS action from the action list.
  *
@@ -2727,7 +2675,44 @@ find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
 }
 
 /**
- * Get QUEUE/RSS action from the action list.
+ *  Get layer flags from the prefix flow.
+ *
+ *  Some flows may be split to several subflows, the prefix subflow gets the
+ *  match items and the suffix sub flow gets the actions.
+ *  Some actions need the user defined match item flags to get the detail for
+ *  the action.
+ *  This function helps the suffix flow to get the item layer flags from prefix
+ *  subflow.
+ *
+ * @param[in] dev_flow
+ *   Pointer the created preifx subflow.
+ *
+ * @return
+ *   The layers get from prefix subflow.
+ */
+static inline uint64_t
+flow_get_prefix_layer_flags(struct mlx5_flow *dev_flow)
+{
+       uint64_t layers = 0;
+
+       /* If no decap actions, use the layers directly. */
+       if (!(dev_flow->actions & MLX5_FLOW_ACTION_DECAP))
+               return dev_flow->layers;
+       /* Convert L3 layers with decap action. */
+       if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L3_IPV4)
+               layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV4;
+       else if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L3_IPV6)
+               layers |= MLX5_FLOW_LAYER_OUTER_L3_IPV6;
+       /* Convert L4 layers with decap action.  */
+       if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L4_TCP)
+               layers |= MLX5_FLOW_LAYER_OUTER_L4_TCP;
+       else if (dev_flow->layers & MLX5_FLOW_LAYER_INNER_L4_UDP)
+               layers |= MLX5_FLOW_LAYER_OUTER_L4_UDP;
+       return layers;
+}
+
+/**
+ * Get metadata split action information.
  *
  * @param[in] actions
  *   Pointer to the list of actions.
@@ -2736,18 +2721,38 @@ find_graph_root(const struct rte_flow_item pattern[], uint32_t rss_level)
  * @param[out] qrss_type
  *   Pointer to the action type to return. RTE_FLOW_ACTION_TYPE_END is returned
  *   if no QUEUE/RSS is found.
+ * @param[out] encap_idx
+ *   Pointer to the index of the encap action if exists, otherwise the last
+ *   action index.
  *
  * @return
  *   Total number of actions.
  */
 static int
-flow_parse_qrss_action(const struct rte_flow_action actions[],
-                      const struct rte_flow_action **qrss)
+flow_parse_metadata_split_actions_info(const struct rte_flow_action actions[],
+                                      const struct rte_flow_action **qrss,
+                                      int *encap_idx)
 {
+       const struct rte_flow_action_raw_encap *raw_encap;
        int actions_n = 0;
+       int raw_decap_idx = -1;
 
+       *encap_idx = -1;
        for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
                switch (actions->type) {
+               case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
+               case RTE_FLOW_ACTION_TYPE_NVGRE_ENCAP:
+                       *encap_idx = actions_n;
+                       break;
+               case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
+                       raw_decap_idx = actions_n;
+                       break;
+               case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
+                       raw_encap = actions->conf;
+                       if (raw_encap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
+                               *encap_idx = raw_decap_idx != -1 ?
+                                                     raw_decap_idx : actions_n;
+                       break;
                case RTE_FLOW_ACTION_TYPE_QUEUE:
                case RTE_FLOW_ACTION_TYPE_RSS:
                        *qrss = actions;
@@ -2757,6 +2762,8 @@ flow_parse_qrss_action(const struct rte_flow_action actions[],
                }
                actions_n++;
        }
+       if (*encap_idx == -1)
+               *encap_idx = actions_n;
        /* Count RTE_FLOW_ACTION_TYPE_END. */
        return actions_n + 1;
 }
@@ -3406,6 +3413,8 @@ flow_hairpin_split(struct rte_eth_dev *dev,
  *   Parent flow structure pointer.
  * @param[in, out] sub_flow
  *   Pointer to return the created subflow, may be NULL.
+ * @param[in] prefix_layers
+ *   Prefix subflow layers, may be 0.
  * @param[in] attr
  *   Flow rule attributes.
  * @param[in] items
@@ -3423,6 +3432,7 @@ static int
 flow_create_split_inner(struct rte_eth_dev *dev,
                        struct rte_flow *flow,
                        struct mlx5_flow **sub_flow,
+                       uint64_t prefix_layers,
                        const struct rte_flow_attr *attr,
                        const struct rte_flow_item items[],
                        const struct rte_flow_action actions[],
@@ -3437,6 +3447,12 @@ flow_create_split_inner(struct rte_eth_dev *dev,
        dev_flow->external = external;
        /* Subflow object was created, we must include one in the list. */
        LIST_INSERT_HEAD(&flow->dev_flows, dev_flow, next);
+       /*
+        * If dev_flow is as one of the suffix flow, some actions in suffix
+        * flow may need some user defined item layer flags.
+        */
+       if (prefix_layers)
+               dev_flow->layers = prefix_layers;
        if (sub_flow)
                *sub_flow = dev_flow;
        return flow_drv_translate(dev, dev_flow, attr, items, actions, error);
@@ -3456,6 +3472,10 @@ flow_create_split_inner(struct rte_eth_dev *dev,
  *
  * @param dev
  *   Pointer to Ethernet device.
+ * @param[in] items
+ *   Pattern specification (list terminated by the END pattern item).
+ * @param[out] sfx_items
+ *   Suffix flow match items (list terminated by the END pattern item).
  * @param[in] actions
  *   Associated actions (list terminated by the END action).
  * @param[out] actions_sfx
@@ -3472,66 +3492,60 @@ flow_create_split_inner(struct rte_eth_dev *dev,
  */
 static int
 flow_meter_split_prep(struct rte_eth_dev *dev,
+                const struct rte_flow_item items[],
+                struct rte_flow_item sfx_items[],
                 const struct rte_flow_action actions[],
                 struct rte_flow_action actions_sfx[],
                 struct rte_flow_action actions_pre[])
 {
-       struct rte_flow_action *tag_action;
+       struct rte_flow_action *tag_action = NULL;
+       struct rte_flow_item *tag_item;
        struct mlx5_rte_flow_action_set_tag *set_tag;
        struct rte_flow_error error;
        const struct rte_flow_action_raw_encap *raw_encap;
        const struct rte_flow_action_raw_decap *raw_decap;
+       struct mlx5_rte_flow_item_tag *tag_spec;
+       struct mlx5_rte_flow_item_tag *tag_mask;
        uint32_t tag_id;
+       bool copy_vlan = false;
 
-       /* Add the extra tag action first. */
-       tag_action = actions_pre;
-       tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
-       actions_pre++;
        /* Prepare the actions for prefix and suffix flow. */
        for (; actions->type != RTE_FLOW_ACTION_TYPE_END; actions++) {
+               struct rte_flow_action **action_cur = NULL;
+
                switch (actions->type) {
                case RTE_FLOW_ACTION_TYPE_METER:
+                       /* Add the extra tag action first. */
+                       tag_action = actions_pre;
+                       tag_action->type = MLX5_RTE_FLOW_ACTION_TYPE_TAG;
+                       actions_pre++;
+                       action_cur = &actions_pre;
+                       break;
                case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
                case RTE_FLOW_ACTION_TYPE_NVGRE_DECAP:
-                       memcpy(actions_pre, actions,
-                              sizeof(struct rte_flow_action));
-                       actions_pre++;
+                       action_cur = &actions_pre;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_ENCAP:
                        raw_encap = actions->conf;
-                       if (raw_encap->size >
-                           (sizeof(struct rte_flow_item_eth) +
-                            sizeof(struct rte_flow_item_ipv4))) {
-                               memcpy(actions_sfx, actions,
-                                      sizeof(struct rte_flow_action));
-                               actions_sfx++;
-                       } else {
-                               rte_memcpy(actions_pre, actions,
-                                          sizeof(struct rte_flow_action));
-                               actions_pre++;
-                       }
+                       if (raw_encap->size < MLX5_ENCAPSULATION_DECISION_SIZE)
+                               action_cur = &actions_pre;
                        break;
                case RTE_FLOW_ACTION_TYPE_RAW_DECAP:
                        raw_decap = actions->conf;
-                       /* Size 0 decap means 50 bytes as vxlan decap. */
-                       if (raw_decap->size && (raw_decap->size <
-                           (sizeof(struct rte_flow_item_eth) +
-                            sizeof(struct rte_flow_item_ipv4)))) {
-                               memcpy(actions_sfx, actions,
-                                      sizeof(struct rte_flow_action));
-                               actions_sfx++;
-                       } else {
-                               rte_memcpy(actions_pre, actions,
-                                          sizeof(struct rte_flow_action));
-                               actions_pre++;
-                       }
+                       if (raw_decap->size > MLX5_ENCAPSULATION_DECISION_SIZE)
+                               action_cur = &actions_pre;
+                       break;
+               case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
+               case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
+                       copy_vlan = true;
                        break;
                default:
-                       memcpy(actions_sfx, actions,
-                               sizeof(struct rte_flow_action));
-                       actions_sfx++;
                        break;
                }
+               if (!action_cur)
+                       action_cur = &actions_sfx;
+               memcpy(*action_cur, actions, sizeof(struct rte_flow_action));
+               (*action_cur)++;
        }
        /* Add end action to the actions. */
        actions_sfx->type = RTE_FLOW_ACTION_TYPE_END;
@@ -3545,7 +3559,44 @@ flow_meter_split_prep(struct rte_eth_dev *dev,
         */
        tag_id = flow_qrss_get_id(dev);
        set_tag->data = tag_id << MLX5_MTR_COLOR_BITS;
+       assert(tag_action);
        tag_action->conf = set_tag;
+       /* Prepare the suffix subflow items. */
+       tag_item = sfx_items++;
+       for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
+               int item_type = items->type;
+
+               switch (item_type) {
+               case RTE_FLOW_ITEM_TYPE_PORT_ID:
+                       memcpy(sfx_items, items, sizeof(*sfx_items));
+                       sfx_items++;
+                       break;
+               case RTE_FLOW_ITEM_TYPE_VLAN:
+                       if (copy_vlan) {
+                               memcpy(sfx_items, items, sizeof(*sfx_items));
+                               /*
+                                * Convert to internal match item, it is used
+                                * for vlan push and set vid.
+                                */
+                               sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_VLAN;
+                               sfx_items++;
+                       }
+                       break;
+               default:
+                       break;
+               }
+       }
+       sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
+       sfx_items++;
+       tag_spec = (struct mlx5_rte_flow_item_tag *)sfx_items;
+       tag_spec->data = tag_id << MLX5_MTR_COLOR_BITS;
+       tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0, &error);
+       tag_mask = tag_spec + 1;
+       tag_mask->data = 0xffffff00;
+       tag_item->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
+       tag_item->spec = tag_spec;
+       tag_item->last = NULL;
+       tag_item->mask = tag_mask;
        return tag_id;
 }
 
@@ -3678,6 +3729,8 @@ flow_mreg_split_qrss_prep(struct rte_eth_dev *dev,
  *   Number of actions in the list.
  * @param[out] error
  *   Perform verbose error reporting if not NULL.
+ * @param[in] encap_idx
+ *   The encap action inndex.
  *
  * @return
  *   0 on success, negative value otherwise
@@ -3686,7 +3739,8 @@ static int
 flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
                       struct rte_flow_action *ext_actions,
                       const struct rte_flow_action *actions,
-                      int actions_n, struct rte_flow_error *error)
+                      int actions_n, struct rte_flow_error *error,
+                      int encap_idx)
 {
        struct mlx5_flow_action_copy_mreg *cp_mreg =
                (struct mlx5_flow_action_copy_mreg *)
@@ -3701,15 +3755,24 @@ flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
        if (ret < 0)
                return ret;
        cp_mreg->src = ret;
-       memcpy(ext_actions, actions,
-                       sizeof(*ext_actions) * actions_n);
-       ext_actions[actions_n - 1] = (struct rte_flow_action){
-               .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
-               .conf = cp_mreg,
-       };
-       ext_actions[actions_n] = (struct rte_flow_action){
-               .type = RTE_FLOW_ACTION_TYPE_END,
-       };
+       if (encap_idx != 0)
+               memcpy(ext_actions, actions, sizeof(*ext_actions) * encap_idx);
+       if (encap_idx == actions_n - 1) {
+               ext_actions[actions_n - 1] = (struct rte_flow_action){
+                       .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
+                       .conf = cp_mreg,
+               };
+               ext_actions[actions_n] = (struct rte_flow_action){
+                       .type = RTE_FLOW_ACTION_TYPE_END,
+               };
+       } else {
+               ext_actions[encap_idx] = (struct rte_flow_action){
+                       .type = MLX5_RTE_FLOW_ACTION_TYPE_COPY_MREG,
+                       .conf = cp_mreg,
+               };
+               memcpy(ext_actions + encap_idx + 1, actions + encap_idx,
+                               sizeof(*ext_actions) * (actions_n - encap_idx));
+       }
        return 0;
 }
 
@@ -3727,6 +3790,8 @@ flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
  *   Pointer to Ethernet device.
  * @param[in] flow
  *   Parent flow structure pointer.
+ * @param[in] prefix_layers
+ *   Prefix flow layer flags.
  * @param[in] attr
  *   Flow rule attributes.
  * @param[in] items
@@ -3743,6 +3808,7 @@ flow_mreg_tx_copy_prep(struct rte_eth_dev *dev,
 static int
 flow_create_split_metadata(struct rte_eth_dev *dev,
                           struct rte_flow *flow,
+                          uint64_t prefix_layers,
                           const struct rte_flow_attr *attr,
                           const struct rte_flow_item items[],
                           const struct rte_flow_action actions[],
@@ -3757,15 +3823,18 @@ flow_create_split_metadata(struct rte_eth_dev *dev,
        int mtr_sfx = 0;
        size_t act_size;
        int actions_n;
+       int encap_idx;
        int ret;
 
        /* Check whether extensive metadata feature is engaged. */
        if (!config->dv_flow_en ||
            config->dv_xmeta_en == MLX5_XMETA_MODE_LEGACY ||
            !mlx5_flow_ext_mreg_supported(dev))
-               return flow_create_split_inner(dev, flow, NULL, attr, items,
-                                              actions, external, error);
-       actions_n = flow_parse_qrss_action(actions, &qrss);
+               return flow_create_split_inner(dev, flow, NULL, prefix_layers,
+                                              attr, items, actions, external,
+                                              error);
+       actions_n = flow_parse_metadata_split_actions_info(actions, &qrss,
+                                                          &encap_idx);
        if (qrss) {
                /* Exclude hairpin flows from splitting. */
                if (qrss->type == RTE_FLOW_ACTION_TYPE_QUEUE) {
@@ -3840,14 +3909,14 @@ flow_create_split_metadata(struct rte_eth_dev *dev,
                                                  "metadata flow");
                /* Create the action list appended with copy register. */
                ret = flow_mreg_tx_copy_prep(dev, ext_actions, actions,
-                                            actions_n, error);
+                                            actions_n, error, encap_idx);
                if (ret < 0)
                        goto exit;
        }
        /* Add the unmodified original or prefix subflow. */
-       ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
-                                     ext_actions ? ext_actions : actions,
-                                     external, error);
+       ret = flow_create_split_inner(dev, flow, &dev_flow, prefix_layers, attr,
+                                     items, ext_actions ? ext_actions :
+                                     actions, external, error);
        if (ret < 0)
                goto exit;
        MLX5_ASSERT(dev_flow);
@@ -3881,7 +3950,7 @@ flow_create_split_metadata(struct rte_eth_dev *dev,
                                .type = RTE_FLOW_ACTION_TYPE_END,
                        },
                };
-               uint64_t hash_fields = dev_flow->hash_fields;
+               uint64_t layers = flow_get_prefix_layer_flags(dev_flow);
 
                /*
                 * Configure the tag item only if there is no meter subflow.
@@ -3908,14 +3977,13 @@ flow_create_split_metadata(struct rte_eth_dev *dev,
                }
                dev_flow = NULL;
                /* Add suffix subflow to execute Q/RSS. */
-               ret = flow_create_split_inner(dev, flow, &dev_flow,
+               ret = flow_create_split_inner(dev, flow, &dev_flow, layers,
                                              &q_attr, mtr_sfx ? items :
                                              q_items, q_actions,
                                              external, error);
                if (ret < 0)
                        goto exit;
                MLX5_ASSERT(dev_flow);
-               dev_flow->hash_fields = hash_fields;
        }
 
 exit:
@@ -3968,7 +4036,6 @@ flow_create_split_meter(struct rte_eth_dev *dev,
        struct rte_flow_action *sfx_actions = NULL;
        struct rte_flow_action *pre_actions = NULL;
        struct rte_flow_item *sfx_items = NULL;
-       const  struct rte_flow_item *sfx_port_id_item;
        struct mlx5_flow *dev_flow = NULL;
        struct rte_flow_attr sfx_attr = *attr;
        uint32_t mtr = 0;
@@ -3981,13 +4048,11 @@ flow_create_split_meter(struct rte_eth_dev *dev,
        if (priv->mtr_en)
                actions_n = flow_check_meter_action(actions, &mtr);
        if (mtr) {
-               struct mlx5_rte_flow_item_tag *tag_spec;
-               struct mlx5_rte_flow_item_tag *tag_mask;
                /* The five prefix actions: meter, decap, encap, tag, end. */
                act_size = sizeof(struct rte_flow_action) * (actions_n + 5) +
-                          sizeof(struct rte_flow_action_set_tag);
-               /* tag, end. */
-#define METER_SUFFIX_ITEM 3
+                          sizeof(struct mlx5_rte_flow_action_set_tag);
+               /* tag, vlan, port id, end. */
+#define METER_SUFFIX_ITEM 4
                item_size = sizeof(struct rte_flow_item) * METER_SUFFIX_ITEM +
                            sizeof(struct mlx5_rte_flow_item_tag) * 2;
                sfx_actions = rte_zmalloc(__func__, (act_size + item_size), 0);
@@ -3996,51 +4061,34 @@ flow_create_split_meter(struct rte_eth_dev *dev,
                                                  RTE_FLOW_ERROR_TYPE_ACTION,
                                                  NULL, "no memory to split "
                                                  "meter flow");
+               sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
+                            act_size);
                pre_actions = sfx_actions + actions_n;
-               mtr_tag_id = flow_meter_split_prep(dev, actions, sfx_actions,
-                                                    pre_actions);
+               mtr_tag_id = flow_meter_split_prep(dev, items, sfx_items,
+                                                  actions, sfx_actions,
+                                                  pre_actions);
                if (!mtr_tag_id) {
                        ret = -rte_errno;
                        goto exit;
                }
                /* Add the prefix subflow. */
-               ret = flow_create_split_inner(dev, flow, &dev_flow, attr, items,
-                                                 pre_actions, external, error);
+               ret = flow_create_split_inner(dev, flow, &dev_flow, 0, attr,
+                                             items, pre_actions, external,
+                                             error);
                if (ret) {
                        ret = -rte_errno;
                        goto exit;
                }
                dev_flow->mtr_flow_id = mtr_tag_id;
-               /* Prepare the suffix flow match pattern. */
-               sfx_items = (struct rte_flow_item *)((char *)sfx_actions +
-                            act_size);
-               tag_spec = (struct mlx5_rte_flow_item_tag *)(sfx_items +
-                           METER_SUFFIX_ITEM);
-               tag_spec->data = dev_flow->mtr_flow_id << MLX5_MTR_COLOR_BITS;
-               tag_spec->id = mlx5_flow_get_reg_id(dev, MLX5_MTR_SFX, 0,
-                                                   error);
-               tag_mask = tag_spec + 1;
-               tag_mask->data = 0xffffff00;
-               sfx_items->type = MLX5_RTE_FLOW_ITEM_TYPE_TAG;
-               sfx_items->spec = tag_spec;
-               sfx_items->last = NULL;
-               sfx_items->mask = tag_mask;
-               sfx_items++;
-               sfx_port_id_item = find_port_id_item(items);
-               if (sfx_port_id_item) {
-                       memcpy(sfx_items, sfx_port_id_item,
-                              sizeof(*sfx_items));
-                       sfx_items++;
-               }
-               sfx_items->type = RTE_FLOW_ITEM_TYPE_END;
-               sfx_items -= sfx_port_id_item ? 2 : 1;
                /* Setting the sfx group atrr. */
                sfx_attr.group = sfx_attr.transfer ?
                                (MLX5_FLOW_TABLE_LEVEL_SUFFIX - 1) :
                                 MLX5_FLOW_TABLE_LEVEL_SUFFIX;
        }
        /* Add the prefix subflow. */
-       ret = flow_create_split_metadata(dev, flow, &sfx_attr,
+       ret = flow_create_split_metadata(dev, flow, dev_flow ?
+                                        flow_get_prefix_layer_flags(dev_flow) :
+                                        0, &sfx_attr,
                                         sfx_items ? sfx_items : items,
                                         sfx_actions ? sfx_actions : actions,
                                         external, error);
@@ -4154,13 +4202,16 @@ flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
        } items_tx;
        struct rte_flow_expand_rss *buf = &expand_buffer.buf;
        const struct rte_flow_action *p_actions_rx = actions;
-       int ret;
        uint32_t i;
        uint32_t flow_size;
        int hairpin_flow = 0;
        uint32_t hairpin_id = 0;
        struct rte_flow_attr attr_tx = { .priority = 0 };
+       int ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
+                                   error);
 
+       if (ret < 0)
+               return NULL;
        hairpin_flow = flow_check_hairpin_split(dev, attr, actions);
        if (hairpin_flow > 0) {
                if (hairpin_flow > MLX5_MAX_SPLIT_ACTIONS) {
@@ -4172,10 +4223,6 @@ flow_list_create(struct rte_eth_dev *dev, struct mlx5_flows *list,
                                   &hairpin_id);
                p_actions_rx = actions_rx.actions;
        }
-       ret = flow_drv_validate(dev, attr, items, p_actions_rx, external,
-                               error);
-       if (ret < 0)
-               goto error_before_flow;
        flow_size = sizeof(struct rte_flow);
        rss = flow_get_rss_action(p_actions_rx);
        if (rss)