net/mlx5: fix zero metadata action
[dpdk.git] / drivers / net / mlx5 / mlx5_flow_dv.c
index b6e50b1..e2d6690 100644 (file)
@@ -54,8 +54,6 @@
 #define MLX5DV_DR_ACTION_FLAGS_ROOT_LEVEL 1
 #endif
 
-#define MLX5_ENCAPSULATION_DECISION_SIZE (sizeof(struct rte_flow_item_eth) + \
-                                         sizeof(struct rte_flow_item_ipv4))
 /* VLAN header definitions */
 #define MLX5DV_FLOW_VLAN_PCP_SHIFT 13
 #define MLX5DV_FLOW_VLAN_PCP_MASK (0x7 << MLX5DV_FLOW_VLAN_PCP_SHIFT)
@@ -85,16 +83,35 @@ union flow_dv_attr {
  *   Pointer to item specification.
  * @param[out] attr
  *   Pointer to flow attributes structure.
+ * @param[in] dev_flow
+ *   Pointer to the sub flow.
  * @param[in] tunnel_decap
  *   Whether action is after tunnel decapsulation.
  */
 static void
 flow_dv_attr_init(const struct rte_flow_item *item, union flow_dv_attr *attr,
-                 bool tunnel_decap)
+                 struct mlx5_flow *dev_flow, bool tunnel_decap)
 {
+       /*
+        * If layers is already initialized, it means this dev_flow is the
+        * suffix flow, the layers flags is set by the prefix flow. Need to
+        * use the layer flags from prefix flow as the suffix flow may not
+        * have the user defined items as the flow is split.
+        */
+       if (dev_flow->layers) {
+               if (dev_flow->layers & MLX5_FLOW_LAYER_OUTER_L3_IPV4)
+                       attr->ipv4 = 1;
+               else if (dev_flow->layers & MLX5_FLOW_LAYER_OUTER_L3_IPV6)
+                       attr->ipv6 = 1;
+               if (dev_flow->layers & MLX5_FLOW_LAYER_OUTER_L4_TCP)
+                       attr->tcp = 1;
+               else if (dev_flow->layers & MLX5_FLOW_LAYER_OUTER_L4_UDP)
+                       attr->udp = 1;
+               attr->valid = 1;
+               return;
+       }
        for (; item->type != RTE_FLOW_ITEM_TYPE_END; item++) {
                uint8_t next_protocol = 0xff;
-
                switch (item->type) {
                case RTE_FLOW_ITEM_TYPE_GRE:
                case RTE_FLOW_ITEM_TYPE_NVGRE:
@@ -640,6 +657,8 @@ flow_dv_convert_action_modify_vlan_vid
  *   Pointer to rte_flow_item objects list.
  * @param[in] attr
  *   Pointer to flow attributes structure.
+ * @param[in] dev_flow
+ *   Pointer to the sub flow.
  * @param[in] tunnel_decap
  *   Whether action is after tunnel decapsulation.
  * @param[out] error
@@ -653,8 +672,8 @@ flow_dv_convert_action_modify_tp
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         const struct rte_flow_item *items,
-                        union flow_dv_attr *attr, bool tunnel_decap,
-                        struct rte_flow_error *error)
+                        union flow_dv_attr *attr, struct mlx5_flow *dev_flow,
+                        bool tunnel_decap, struct rte_flow_error *error)
 {
        const struct rte_flow_action_set_tp *conf =
                (const struct rte_flow_action_set_tp *)(action->conf);
@@ -666,7 +685,7 @@ flow_dv_convert_action_modify_tp
        struct field_modify_info *field;
 
        if (!attr->valid)
-               flow_dv_attr_init(items, attr, tunnel_decap);
+               flow_dv_attr_init(items, attr, dev_flow, tunnel_decap);
        if (attr->udp) {
                memset(&udp, 0, sizeof(udp));
                memset(&udp_mask, 0, sizeof(udp_mask));
@@ -716,6 +735,8 @@ flow_dv_convert_action_modify_tp
  *   Pointer to rte_flow_item objects list.
  * @param[in] attr
  *   Pointer to flow attributes structure.
+ * @param[in] dev_flow
+ *   Pointer to the sub flow.
  * @param[in] tunnel_decap
  *   Whether action is after tunnel decapsulation.
  * @param[out] error
@@ -729,8 +750,8 @@ flow_dv_convert_action_modify_ttl
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_action *action,
                         const struct rte_flow_item *items,
-                        union flow_dv_attr *attr, bool tunnel_decap,
-                        struct rte_flow_error *error)
+                        union flow_dv_attr *attr, struct mlx5_flow *dev_flow,
+                        bool tunnel_decap, struct rte_flow_error *error)
 {
        const struct rte_flow_action_set_ttl *conf =
                (const struct rte_flow_action_set_ttl *)(action->conf);
@@ -742,7 +763,7 @@ flow_dv_convert_action_modify_ttl
        struct field_modify_info *field;
 
        if (!attr->valid)
-               flow_dv_attr_init(items, attr, tunnel_decap);
+               flow_dv_attr_init(items, attr, dev_flow, tunnel_decap);
        if (attr->ipv4) {
                memset(&ipv4, 0, sizeof(ipv4));
                memset(&ipv4_mask, 0, sizeof(ipv4_mask));
@@ -778,6 +799,8 @@ flow_dv_convert_action_modify_ttl
  *   Pointer to rte_flow_item objects list.
  * @param[in] attr
  *   Pointer to flow attributes structure.
+ * @param[in] dev_flow
+ *   Pointer to the sub flow.
  * @param[in] tunnel_decap
  *   Whether action is after tunnel decapsulation.
  * @param[out] error
@@ -790,8 +813,8 @@ static int
 flow_dv_convert_action_modify_dec_ttl
                        (struct mlx5_flow_dv_modify_hdr_resource *resource,
                         const struct rte_flow_item *items,
-                        union flow_dv_attr *attr, bool tunnel_decap,
-                        struct rte_flow_error *error)
+                        union flow_dv_attr *attr, struct mlx5_flow *dev_flow,
+                        bool tunnel_decap, struct rte_flow_error *error)
 {
        struct rte_flow_item item;
        struct rte_flow_item_ipv4 ipv4;
@@ -801,7 +824,7 @@ flow_dv_convert_action_modify_dec_ttl
        struct field_modify_info *field;
 
        if (!attr->valid)
-               flow_dv_attr_init(items, attr, tunnel_decap);
+               flow_dv_attr_init(items, attr, dev_flow, tunnel_decap);
        if (attr->ipv4) {
                memset(&ipv4, 0, sizeof(ipv4));
                memset(&ipv4_mask, 0, sizeof(ipv4_mask));
@@ -1732,10 +1755,14 @@ flow_dev_get_vlan_info_from_items(const struct rte_flow_item *items,
 
        if (items == NULL)
                return;
-       for (; items->type != RTE_FLOW_ITEM_TYPE_END &&
-              items->type != RTE_FLOW_ITEM_TYPE_VLAN; items++)
-               ;
-       if (items->type == RTE_FLOW_ITEM_TYPE_VLAN) {
+       for (; items->type != RTE_FLOW_ITEM_TYPE_END; items++) {
+               int type = items->type;
+
+               if (type == RTE_FLOW_ITEM_TYPE_VLAN ||
+                   type == MLX5_RTE_FLOW_ITEM_TYPE_VLAN)
+                       break;
+       }
+       if (items->type != RTE_FLOW_ITEM_TYPE_END) {
                const struct rte_flow_item_vlan *vlan_m = items->mask;
                const struct rte_flow_item_vlan *vlan_v = items->spec;
 
@@ -1744,7 +1771,7 @@ flow_dev_get_vlan_info_from_items(const struct rte_flow_item *items,
                /* Only full match values are accepted */
                if ((vlan_m->tci & MLX5DV_FLOW_VLAN_PCP_MASK_BE) ==
                     MLX5DV_FLOW_VLAN_PCP_MASK_BE) {
-                       vlan->vlan_tci &= MLX5DV_FLOW_VLAN_PCP_MASK;
+                       vlan->vlan_tci &= ~MLX5DV_FLOW_VLAN_PCP_MASK;
                        vlan->vlan_tci |=
                                rte_be_to_cpu_16(vlan_v->tci &
                                                 MLX5DV_FLOW_VLAN_PCP_MASK_BE);
@@ -2082,10 +2109,6 @@ flow_dv_validate_action_set_meta(struct rte_eth_dev *dev,
                return rte_flow_error_set(error, EINVAL,
                                          RTE_FLOW_ERROR_TYPE_ACTION, action,
                                          "meta data must be within reg C0");
-       if (!(conf->data & conf->mask))
-               return rte_flow_error_set(error, EINVAL,
-                                         RTE_FLOW_ERROR_TYPE_ACTION, action,
-                                         "zero value has no effect");
        return 0;
 }
 
@@ -4463,13 +4486,35 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
        const struct rte_flow_action_raw_decap *decap;
        const struct rte_flow_action_raw_encap *encap;
        const struct rte_flow_action_rss *rss;
-       struct rte_flow_item_tcp nic_tcp_mask = {
+       const struct rte_flow_item_tcp nic_tcp_mask = {
                .hdr = {
                        .tcp_flags = 0xFF,
                        .src_port = RTE_BE16(UINT16_MAX),
                        .dst_port = RTE_BE16(UINT16_MAX),
                }
        };
+       const struct rte_flow_item_ipv4 nic_ipv4_mask = {
+               .hdr = {
+                       .src_addr = RTE_BE32(0xffffffff),
+                       .dst_addr = RTE_BE32(0xffffffff),
+                       .type_of_service = 0xff,
+                       .next_proto_id = 0xff,
+                       .time_to_live = 0xff,
+               },
+       };
+       const struct rte_flow_item_ipv6 nic_ipv6_mask = {
+               .hdr = {
+                       .src_addr =
+                       "\xff\xff\xff\xff\xff\xff\xff\xff"
+                       "\xff\xff\xff\xff\xff\xff\xff\xff",
+                       .dst_addr =
+                       "\xff\xff\xff\xff\xff\xff\xff\xff"
+                       "\xff\xff\xff\xff\xff\xff\xff\xff",
+                       .vtc_flow = RTE_BE32(0xffffffff),
+                       .proto = 0xff,
+                       .hop_limits = 0xff,
+               },
+       };
        struct mlx5_priv *priv = dev->data->dev_private;
        struct mlx5_dev_config *dev_conf = &priv->config;
        uint16_t queue_index = 0xFFFF;
@@ -4536,7 +4581,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
                                                  &item_flags, &tunnel);
                        ret = mlx5_flow_validate_item_ipv4(items, item_flags,
                                                           last_item,
-                                                          ether_type, NULL,
+                                                          ether_type,
+                                                          &nic_ipv4_mask,
                                                           error);
                        if (ret < 0)
                                return ret;
@@ -4561,7 +4607,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
                                                  &item_flags, &tunnel);
                        ret = mlx5_flow_validate_item_ipv6(items, item_flags,
                                                           last_item,
-                                                          ether_type, NULL,
+                                                          ether_type,
+                                                          &nic_ipv6_mask,
                                                           error);
                        if (ret < 0)
                                return ret;
@@ -5279,19 +5326,27 @@ flow_dv_translate_item_eth(void *matcher, void *key,
        /* The value must be in the range of the mask. */
        for (i = 0; i < sizeof(eth_m->dst); ++i)
                l24_v[i] = eth_m->src.addr_bytes[i] & eth_v->src.addr_bytes[i];
-       MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
-                rte_be_to_cpu_16(eth_m->type));
-       l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, ethertype);
-       *(uint16_t *)(l24_v) = eth_m->type & eth_v->type;
        if (eth_v->type) {
                /* When ethertype is present set mask for tagged VLAN. */
                MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
                /* Set value for tagged VLAN if ethertype is 802.1Q. */
                if (eth_v->type == RTE_BE16(RTE_ETHER_TYPE_VLAN) ||
-                   eth_v->type == RTE_BE16(RTE_ETHER_TYPE_QINQ))
+                   eth_v->type == RTE_BE16(RTE_ETHER_TYPE_QINQ)) {
                        MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag,
                                 1);
+                       /* Return here to avoid setting match on ethertype. */
+                       return;
+               }
        }
+       /*
+        * HW supports match on one Ethertype, the Ethertype following the last
+        * VLAN tag of the packet (see PRM).
+        * Set match on ethertype only if ETH header is not followed by VLAN.
+        */
+       MLX5_SET(fte_match_set_lyr_2_4, headers_m, ethertype,
+                rte_be_to_cpu_16(eth_m->type));
+       l24_v = MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, ethertype);
+       *(uint16_t *)(l24_v) = eth_m->type & eth_v->type;
 }
 
 /**
@@ -5365,6 +5420,8 @@ flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow,
  *   Flow matcher value.
  * @param[in] item
  *   Flow pattern to translate.
+ * @param[in] item_flags
+ *   Bit-fields that holds the items detected until now.
  * @param[in] inner
  *   Item is inner pattern.
  * @param[in] group
@@ -5373,6 +5430,7 @@ flow_dv_translate_item_vlan(struct mlx5_flow *dev_flow,
 static void
 flow_dv_translate_item_ipv4(void *matcher, void *key,
                            const struct rte_flow_item *item,
+                           const uint64_t item_flags,
                            int inner, uint32_t group)
 {
        const struct rte_flow_item_ipv4 *ipv4_m = item->mask;
@@ -5383,6 +5441,7 @@ flow_dv_translate_item_ipv4(void *matcher, void *key,
                        .dst_addr = RTE_BE32(0xffffffff),
                        .type_of_service = 0xff,
                        .next_proto_id = 0xff,
+                       .time_to_live = 0xff,
                },
        };
        void *headers_m;
@@ -5432,7 +5491,16 @@ flow_dv_translate_item_ipv4(void *matcher, void *key,
                 ipv4_m->hdr.next_proto_id);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                 ipv4_v->hdr.next_proto_id & ipv4_m->hdr.next_proto_id);
-       MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
+       MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_ttl_hoplimit,
+                ipv4_m->hdr.time_to_live);
+       MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ttl_hoplimit,
+                ipv4_v->hdr.time_to_live & ipv4_m->hdr.time_to_live);
+       /*
+        * On outer header (which must contains L2), or inner header with L2,
+        * set cvlan_tag mask bit to mark this packet as untagged.
+        */
+       if (!inner || item_flags & MLX5_FLOW_LAYER_INNER_L2)
+               MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
 }
 
 /**
@@ -5444,6 +5512,8 @@ flow_dv_translate_item_ipv4(void *matcher, void *key,
  *   Flow matcher value.
  * @param[in] item
  *   Flow pattern to translate.
+ * @param[in] item_flags
+ *   Bit-fields that holds the items detected until now.
  * @param[in] inner
  *   Item is inner pattern.
  * @param[in] group
@@ -5452,6 +5522,7 @@ flow_dv_translate_item_ipv4(void *matcher, void *key,
 static void
 flow_dv_translate_item_ipv6(void *matcher, void *key,
                            const struct rte_flow_item *item,
+                           const uint64_t item_flags,
                            int inner, uint32_t group)
 {
        const struct rte_flow_item_ipv6 *ipv6_m = item->mask;
@@ -5537,7 +5608,17 @@ flow_dv_translate_item_ipv6(void *matcher, void *key,
                 ipv6_m->hdr.proto);
        MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
                 ipv6_v->hdr.proto & ipv6_m->hdr.proto);
-       MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
+       /* Hop limit. */
+       MLX5_SET(fte_match_set_lyr_2_4, headers_m, ip_ttl_hoplimit,
+                ipv6_m->hdr.hop_limits);
+       MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ttl_hoplimit,
+                ipv6_v->hdr.hop_limits & ipv6_m->hdr.hop_limits);
+       /*
+        * On outer header (which must contains L2), or inner header with L2,
+        * set cvlan_tag mask bit to mark this packet as untagged.
+        */
+       if (!inner || item_flags & MLX5_FLOW_LAYER_INNER_L2)
+               MLX5_SET(fte_match_set_lyr_2_4, headers_m, cvlan_tag, 1);
 }
 
 /**
@@ -7505,7 +7586,7 @@ cnt_err:
                case RTE_FLOW_ACTION_TYPE_SET_TP_DST:
                        if (flow_dv_convert_action_modify_tp
                                        (mhdr_res, actions, items,
-                                        &flow_attr, !!(action_flags &
+                                        &flow_attr, dev_flow, !!(action_flags &
                                         MLX5_FLOW_ACTION_DECAP), error))
                                return -rte_errno;
                        action_flags |= actions->type ==
@@ -7515,7 +7596,7 @@ cnt_err:
                        break;
                case RTE_FLOW_ACTION_TYPE_DEC_TTL:
                        if (flow_dv_convert_action_modify_dec_ttl
-                                       (mhdr_res, items, &flow_attr,
+                                       (mhdr_res, items, &flow_attr, dev_flow,
                                         !!(action_flags &
                                         MLX5_FLOW_ACTION_DECAP), error))
                                return -rte_errno;
@@ -7524,7 +7605,7 @@ cnt_err:
                case RTE_FLOW_ACTION_TYPE_SET_TTL:
                        if (flow_dv_convert_action_modify_ttl
                                        (mhdr_res, actions, items, &flow_attr,
-                                        !!(action_flags &
+                                        dev_flow, !!(action_flags &
                                         MLX5_FLOW_ACTION_DECAP), error))
                                return -rte_errno;
                        action_flags |= MLX5_FLOW_ACTION_SET_TTL;
@@ -7644,7 +7725,7 @@ cnt_err:
                        mlx5_flow_tunnel_ip_check(items, next_protocol,
                                                  &item_flags, &tunnel);
                        flow_dv_translate_item_ipv4(match_mask, match_value,
-                                                   items, tunnel,
+                                                   items, item_flags, tunnel,
                                                    dev_flow->group);
                        matcher.priority = MLX5_PRIORITY_MAP_L3;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV4 :
@@ -7667,7 +7748,7 @@ cnt_err:
                        mlx5_flow_tunnel_ip_check(items, next_protocol,
                                                  &item_flags, &tunnel);
                        flow_dv_translate_item_ipv6(match_mask, match_value,
-                                                   items, tunnel,
+                                                   items, item_flags, tunnel,
                                                    dev_flow->group);
                        matcher.priority = MLX5_PRIORITY_MAP_L3;
                        last_item = tunnel ? MLX5_FLOW_LAYER_INNER_L3_IPV6 :
@@ -7813,7 +7894,11 @@ cnt_err:
        MLX5_ASSERT(!flow_dv_check_valid_spec(matcher.mask.buf,
                                              dev_flow->dv.value.buf));
 #endif
-       dev_flow->layers = item_flags;
+       /*
+        * Layers may be already initialized from prefix flow if this dev_flow
+        * is the suffix flow.
+        */
+       dev_flow->layers |= item_flags;
        if (action_flags & MLX5_FLOW_ACTION_RSS)
                flow_dv_hashfields_set(dev_flow);
        /* Register matcher. */