net/mlx5: support tunnel RSS level
[dpdk.git] / drivers / net / mlx5 / mlx5_flow.c
index 61b7deb..b71def5 100644 (file)
@@ -464,6 +464,7 @@ struct mlx5_flow_parse {
                /**< Pointer to Verbs attributes. */
                unsigned int offset;
                /**< Current position or total size of the attribute. */
+               uint64_t hash_fields; /**< Verbs hash fields. */
        } queue[RTE_DIM(hash_rxq_init)];
 };
 
@@ -707,7 +708,8 @@ mlx5_flow_convert_actions(struct rte_eth_dev *dev,
                                                   " function is Toeplitz");
                                return -rte_errno;
                        }
-                       if (rss->level) {
+#ifndef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
+                       if (parser->rss_conf.level > 1) {
                                rte_flow_error_set(error, EINVAL,
                                                   RTE_FLOW_ERROR_TYPE_ACTION,
                                                   actions,
@@ -715,6 +717,15 @@ mlx5_flow_convert_actions(struct rte_eth_dev *dev,
                                                   " level is not supported");
                                return -rte_errno;
                        }
+#endif
+                       if (parser->rss_conf.level > 2) {
+                               rte_flow_error_set(error, EINVAL,
+                                                  RTE_FLOW_ERROR_TYPE_ACTION,
+                                                  actions,
+                                                  "RSS encapsulation level"
+                                                  " > 1 is not supported");
+                               return -rte_errno;
+                       }
                        if (rss->types & MLX5_RSS_HF_MASK) {
                                rte_flow_error_set(error, EINVAL,
                                                   RTE_FLOW_ERROR_TYPE_ACTION,
@@ -765,7 +776,7 @@ mlx5_flow_convert_actions(struct rte_eth_dev *dev,
                        }
                        parser->rss_conf = (struct rte_flow_action_rss){
                                .func = RTE_ETH_HASH_FUNCTION_DEFAULT,
-                               .level = 0,
+                               .level = rss->level,
                                .types = rss->types,
                                .key_len = rss_key_len,
                                .queue_num = rss->queue_num,
@@ -849,10 +860,12 @@ exit_action_overlap:
  *   0 on success, a negative errno value otherwise and rte_errno is set.
  */
 static int
-mlx5_flow_convert_items_validate(const struct rte_flow_item items[],
+mlx5_flow_convert_items_validate(struct rte_eth_dev *dev,
+                                const struct rte_flow_item items[],
                                 struct rte_flow_error *error,
                                 struct mlx5_flow_parse *parser)
 {
+       struct priv *priv = dev->data->dev_private;
        const struct mlx5_flow_items *cur_item = mlx5_flow_items;
        unsigned int i;
        int ret = 0;
@@ -894,6 +907,14 @@ mlx5_flow_convert_items_validate(const struct rte_flow_item items[],
                                                   " tunnel encapsulations.");
                                return -rte_errno;
                        }
+                       if (!priv->config.tunnel_en &&
+                           parser->rss_conf.level > 1) {
+                               rte_flow_error_set(error, ENOTSUP,
+                                       RTE_FLOW_ERROR_TYPE_ITEM,
+                                       items,
+                                       "RSS on tunnel is not supported");
+                               return -rte_errno;
+                       }
                        parser->inner = IBV_FLOW_SPEC_INNER;
                        parser->tunnel = flow_ptype[items->type];
                }
@@ -1013,7 +1034,11 @@ static void
 mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
 {
        unsigned int i;
+       uint32_t inner = parser->inner;
 
+       /* Don't create extra flows for outer RSS. */
+       if (parser->tunnel && parser->rss_conf.level < 2)
+               return;
        /*
         * Fill missing layers in verbs specifications, or compute the correct
         * offset to allocate the memory space for the attributes and
@@ -1024,23 +1049,25 @@ mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
                        struct ibv_flow_spec_ipv4_ext ipv4;
                        struct ibv_flow_spec_ipv6 ipv6;
                        struct ibv_flow_spec_tcp_udp udp_tcp;
+                       struct ibv_flow_spec_eth eth;
                } specs;
                void *dst;
                uint16_t size;
 
                if (i == parser->layer)
                        continue;
-               if (parser->layer == HASH_RXQ_ETH) {
+               if (parser->layer == HASH_RXQ_ETH ||
+                   parser->layer == HASH_RXQ_TUNNEL) {
                        if (hash_rxq_init[i].ip_version == MLX5_IPV4) {
                                size = sizeof(struct ibv_flow_spec_ipv4_ext);
                                specs.ipv4 = (struct ibv_flow_spec_ipv4_ext){
-                                       .type = IBV_FLOW_SPEC_IPV4_EXT,
+                                       .type = inner | IBV_FLOW_SPEC_IPV4_EXT,
                                        .size = size,
                                };
                        } else {
                                size = sizeof(struct ibv_flow_spec_ipv6);
                                specs.ipv6 = (struct ibv_flow_spec_ipv6){
-                                       .type = IBV_FLOW_SPEC_IPV6,
+                                       .type = inner | IBV_FLOW_SPEC_IPV6,
                                        .size = size,
                                };
                        }
@@ -1057,7 +1084,7 @@ mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
                    (i == HASH_RXQ_UDPV6) || (i == HASH_RXQ_TCPV6)) {
                        size = sizeof(struct ibv_flow_spec_tcp_udp);
                        specs.udp_tcp = (struct ibv_flow_spec_tcp_udp) {
-                               .type = ((i == HASH_RXQ_UDPV4 ||
+                               .type = inner | ((i == HASH_RXQ_UDPV4 ||
                                          i == HASH_RXQ_UDPV6) ?
                                         IBV_FLOW_SPEC_UDP :
                                         IBV_FLOW_SPEC_TCP),
@@ -1087,50 +1114,93 @@ mlx5_flow_convert_finalise(struct mlx5_flow_parse *parser)
 static int
 mlx5_flow_convert_rss(struct mlx5_flow_parse *parser)
 {
-       const unsigned int ipv4 =
-               hash_rxq_init[parser->layer].ip_version == MLX5_IPV4;
-       const enum hash_rxq_type hmin = ipv4 ? HASH_RXQ_TCPV4 : HASH_RXQ_TCPV6;
-       const enum hash_rxq_type hmax = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
-       const enum hash_rxq_type ohmin = ipv4 ? HASH_RXQ_TCPV6 : HASH_RXQ_TCPV4;
-       const enum hash_rxq_type ohmax = ipv4 ? HASH_RXQ_IPV6 : HASH_RXQ_IPV4;
-       const enum hash_rxq_type ip = ipv4 ? HASH_RXQ_IPV4 : HASH_RXQ_IPV6;
        unsigned int i;
-
-       /* Remove any other flow not matching the pattern. */
-       if (parser->rss_conf.queue_num == 1 && !parser->rss_conf.types) {
-               for (i = 0; i != hash_rxq_init_n; ++i) {
-                       if (i == HASH_RXQ_ETH)
+       enum hash_rxq_type start;
+       enum hash_rxq_type layer;
+       int outer = parser->tunnel && parser->rss_conf.level < 2;
+       uint64_t rss = parser->rss_conf.types;
+
+       /* Default to outer RSS. */
+       if (!parser->rss_conf.level)
+               parser->rss_conf.level = 1;
+       layer = outer ? parser->out_layer : parser->layer;
+       if (layer == HASH_RXQ_TUNNEL)
+               layer = HASH_RXQ_ETH;
+       if (outer) {
+               /* Only one hash type for outer RSS. */
+               if (rss && layer == HASH_RXQ_ETH) {
+                       start = HASH_RXQ_TCPV4;
+               } else if (rss && layer != HASH_RXQ_ETH &&
+                          !(rss & hash_rxq_init[layer].dpdk_rss_hf)) {
+                       /* If RSS not match L4 pattern, try L3 RSS. */
+                       if (layer < HASH_RXQ_IPV4)
+                               layer = HASH_RXQ_IPV4;
+                       else if (layer > HASH_RXQ_IPV4 && layer < HASH_RXQ_IPV6)
+                               layer = HASH_RXQ_IPV6;
+                       start = layer;
+               } else {
+                       start = layer;
+               }
+               /* Scan first valid hash type. */
+               for (i = start; rss && i <= layer; ++i) {
+                       if (!parser->queue[i].ibv_attr)
                                continue;
-                       rte_free(parser->queue[i].ibv_attr);
-                       parser->queue[i].ibv_attr = NULL;
+                       if (hash_rxq_init[i].dpdk_rss_hf & rss)
+                               break;
                }
-               return 0;
-       }
-       if (parser->layer == HASH_RXQ_ETH)
-               return 0;
-       /* This layer becomes useless as the pattern define under layers. */
-       rte_free(parser->queue[HASH_RXQ_ETH].ibv_attr);
-       parser->queue[HASH_RXQ_ETH].ibv_attr = NULL;
-       /* Remove opposite kind of layer e.g. IPv6 if the pattern is IPv4. */
-       for (i = ohmin; i != (ohmax + 1); ++i) {
-               if (!parser->queue[i].ibv_attr)
-                       continue;
-               rte_free(parser->queue[i].ibv_attr);
-               parser->queue[i].ibv_attr = NULL;
-       }
-       /* Remove impossible flow according to the RSS configuration. */
-       if (hash_rxq_init[parser->layer].dpdk_rss_hf &
-           parser->rss_conf.types) {
-               /* Remove any other flow. */
-               for (i = hmin; i != (hmax + 1); ++i) {
-                       if (i == parser->layer || !parser->queue[i].ibv_attr)
+               if (rss && i <= layer)
+                       parser->queue[layer].hash_fields =
+                                       hash_rxq_init[i].hash_fields;
+               /* Trim unused hash types. */
+               for (i = 0; i != hash_rxq_init_n; ++i) {
+                       if (parser->queue[i].ibv_attr && i != layer) {
+                               rte_free(parser->queue[i].ibv_attr);
+                               parser->queue[i].ibv_attr = NULL;
+                       }
+               }
+       } else {
+               /* Expand for inner or normal RSS. */
+               if (rss && (layer == HASH_RXQ_ETH || layer == HASH_RXQ_IPV4))
+                       start = HASH_RXQ_TCPV4;
+               else if (rss && layer == HASH_RXQ_IPV6)
+                       start = HASH_RXQ_TCPV6;
+               else
+                       start = layer;
+               /* For L4 pattern, try L3 RSS if no L4 RSS. */
+               /* Trim unused hash types. */
+               for (i = 0; i != hash_rxq_init_n; ++i) {
+                       if (!parser->queue[i].ibv_attr)
                                continue;
-                       rte_free(parser->queue[i].ibv_attr);
-                       parser->queue[i].ibv_attr = NULL;
+                       if (i < start || i > layer) {
+                               rte_free(parser->queue[i].ibv_attr);
+                               parser->queue[i].ibv_attr = NULL;
+                               continue;
+                       }
+                       if (!rss)
+                               continue;
+                       if (hash_rxq_init[i].dpdk_rss_hf & rss) {
+                               parser->queue[i].hash_fields =
+                                               hash_rxq_init[i].hash_fields;
+                       } else if (i != layer) {
+                               /* Remove unused RSS expansion. */
+                               rte_free(parser->queue[i].ibv_attr);
+                               parser->queue[i].ibv_attr = NULL;
+                       } else if (layer < HASH_RXQ_IPV4 &&
+                                  (hash_rxq_init[HASH_RXQ_IPV4].dpdk_rss_hf &
+                                   rss)) {
+                               /* Allow IPv4 RSS on L4 pattern. */
+                               parser->queue[i].hash_fields =
+                                       hash_rxq_init[HASH_RXQ_IPV4]
+                                               .hash_fields;
+                       } else if (i > HASH_RXQ_IPV4 && i < HASH_RXQ_IPV6 &&
+                                  (hash_rxq_init[HASH_RXQ_IPV6].dpdk_rss_hf &
+                                   rss)) {
+                               /* Allow IPv4 RSS on L4 pattern. */
+                               parser->queue[i].hash_fields =
+                                       hash_rxq_init[HASH_RXQ_IPV6]
+                                               .hash_fields;
+                       }
                }
-       } else if (!parser->queue[ip].ibv_attr) {
-               /* no RSS possible with the current configuration. */
-               parser->rss_conf.queue_num = 1;
        }
        return 0;
 }
@@ -1178,7 +1248,7 @@ mlx5_flow_convert(struct rte_eth_dev *dev,
        ret = mlx5_flow_convert_actions(dev, actions, error, parser);
        if (ret)
                return ret;
-       ret = mlx5_flow_convert_items_validate(items, error, parser);
+       ret = mlx5_flow_convert_items_validate(dev, items, error, parser);
        if (ret)
                return ret;
        mlx5_flow_convert_finalise(parser);
@@ -1199,10 +1269,6 @@ mlx5_flow_convert(struct rte_eth_dev *dev,
                for (i = 0; i != hash_rxq_init_n; ++i) {
                        unsigned int offset;
 
-                       if (!(parser->rss_conf.types &
-                             hash_rxq_init[i].dpdk_rss_hf) &&
-                           (i != HASH_RXQ_ETH))
-                               continue;
                        offset = parser->queue[i].offset;
                        parser->queue[i].ibv_attr =
                                mlx5_flow_convert_allocate(offset, error);
@@ -1214,6 +1280,7 @@ mlx5_flow_convert(struct rte_eth_dev *dev,
        /* Third step. Conversion parse, fill the specifications. */
        parser->inner = 0;
        parser->tunnel = 0;
+       parser->layer = HASH_RXQ_ETH;
        for (; items->type != RTE_FLOW_ITEM_TYPE_END; ++items) {
                struct mlx5_flow_data data = {
                        .dev = dev,
@@ -1295,17 +1362,11 @@ mlx5_flow_create_copy(struct mlx5_flow_parse *parser, void *src,
        for (i = 0; i != hash_rxq_init_n; ++i) {
                if (!parser->queue[i].ibv_attr)
                        continue;
-               /* Specification must be the same l3 type or none. */
-               if (parser->layer == HASH_RXQ_ETH ||
-                   (hash_rxq_init[parser->layer].ip_version ==
-                    hash_rxq_init[i].ip_version) ||
-                   (hash_rxq_init[i].ip_version == 0)) {
-                       dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
-                                       parser->queue[i].offset);
-                       memcpy(dst, src, size);
-                       ++parser->queue[i].ibv_attr->num_of_specs;
-                       parser->queue[i].offset += size;
-               }
+               dst = (void *)((uintptr_t)parser->queue[i].ibv_attr +
+                               parser->queue[i].offset);
+               memcpy(dst, src, size);
+               ++parser->queue[i].ibv_attr->num_of_specs;
+               parser->queue[i].offset += size;
        }
 }
 
@@ -1336,9 +1397,7 @@ mlx5_flow_create_eth(const struct rte_flow_item *item,
                .size = eth_size,
        };
 
-       /* Don't update layer for the inner pattern. */
-       if (!parser->inner)
-               parser->layer = HASH_RXQ_ETH;
+       parser->layer = HASH_RXQ_ETH;
        if (spec) {
                unsigned int i;
 
@@ -1459,9 +1518,7 @@ mlx5_flow_create_ipv4(const struct rte_flow_item *item,
                                          "L3 VXLAN not enabled by device"
                                          " parameter and/or not configured"
                                          " in firmware");
-       /* Don't update layer for the inner pattern. */
-       if (!parser->inner)
-               parser->layer = HASH_RXQ_IPV4;
+       parser->layer = HASH_RXQ_IPV4;
        if (spec) {
                if (!mask)
                        mask = default_mask;
@@ -1524,9 +1581,7 @@ mlx5_flow_create_ipv6(const struct rte_flow_item *item,
                                          "L3 VXLAN not enabled by device"
                                          " parameter and/or not configured"
                                          " in firmware");
-       /* Don't update layer for the inner pattern. */
-       if (!parser->inner)
-               parser->layer = HASH_RXQ_IPV6;
+       parser->layer = HASH_RXQ_IPV6;
        if (spec) {
                unsigned int i;
                uint32_t vtc_flow_val;
@@ -1599,13 +1654,10 @@ mlx5_flow_create_udp(const struct rte_flow_item *item,
                .size = udp_size,
        };
 
-       /* Don't update layer for the inner pattern. */
-       if (!parser->inner) {
-               if (parser->layer == HASH_RXQ_IPV4)
-                       parser->layer = HASH_RXQ_UDPV4;
-               else
-                       parser->layer = HASH_RXQ_UDPV6;
-       }
+       if (parser->layer == HASH_RXQ_IPV4)
+               parser->layer = HASH_RXQ_UDPV4;
+       else
+               parser->layer = HASH_RXQ_UDPV6;
        if (spec) {
                if (!mask)
                        mask = default_mask;
@@ -1648,13 +1700,10 @@ mlx5_flow_create_tcp(const struct rte_flow_item *item,
                .size = tcp_size,
        };
 
-       /* Don't update layer for the inner pattern. */
-       if (!parser->inner) {
-               if (parser->layer == HASH_RXQ_IPV4)
-                       parser->layer = HASH_RXQ_TCPV4;
-               else
-                       parser->layer = HASH_RXQ_TCPV6;
-       }
+       if (parser->layer == HASH_RXQ_IPV4)
+               parser->layer = HASH_RXQ_TCPV4;
+       else
+               parser->layer = HASH_RXQ_TCPV6;
        if (spec) {
                if (!mask)
                        mask = default_mask;
@@ -1704,6 +1753,11 @@ mlx5_flow_create_vxlan(const struct rte_flow_item *item,
        id.vni[0] = 0;
        parser->inner = IBV_FLOW_SPEC_INNER;
        parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_VXLAN)];
+       parser->out_layer = parser->layer;
+       parser->layer = HASH_RXQ_TUNNEL;
+       /* Default VXLAN to outer RSS. */
+       if (!parser->rss_conf.level)
+               parser->rss_conf.level = 1;
        if (spec) {
                if (!mask)
                        mask = default_mask;
@@ -1761,6 +1815,11 @@ mlx5_flow_create_gre(const struct rte_flow_item *item __rte_unused,
 
        parser->inner = IBV_FLOW_SPEC_INNER;
        parser->tunnel = ptype_ext[PTYPE_IDX(RTE_PTYPE_TUNNEL_GRE)];
+       parser->out_layer = parser->layer;
+       parser->layer = HASH_RXQ_TUNNEL;
+       /* Default GRE to inner RSS. */
+       if (!parser->rss_conf.level)
+               parser->rss_conf.level = 2;
        /* Update encapsulation IP layer protocol. */
        for (i = 0; i != hash_rxq_init_n; ++i) {
                if (!parser->queue[i].ibv_attr)
@@ -1952,33 +2011,33 @@ mlx5_flow_create_action_queue_rss(struct rte_eth_dev *dev,
        unsigned int i;
 
        for (i = 0; i != hash_rxq_init_n; ++i) {
-               uint64_t hash_fields;
-
                if (!parser->queue[i].ibv_attr)
                        continue;
                flow->frxq[i].ibv_attr = parser->queue[i].ibv_attr;
                parser->queue[i].ibv_attr = NULL;
-               hash_fields = hash_rxq_init[i].hash_fields;
+               flow->frxq[i].hash_fields = parser->queue[i].hash_fields;
                if (!priv->dev->data->dev_started)
                        continue;
                flow->frxq[i].hrxq =
                        mlx5_hrxq_get(dev,
                                      parser->rss_conf.key,
                                      parser->rss_conf.key_len,
-                                     hash_fields,
+                                     flow->frxq[i].hash_fields,
                                      parser->rss_conf.queue,
                                      parser->rss_conf.queue_num,
-                                     parser->tunnel);
+                                     parser->tunnel,
+                                     parser->rss_conf.level);
                if (flow->frxq[i].hrxq)
                        continue;
                flow->frxq[i].hrxq =
                        mlx5_hrxq_new(dev,
                                      parser->rss_conf.key,
                                      parser->rss_conf.key_len,
-                                     hash_fields,
+                                     flow->frxq[i].hash_fields,
                                      parser->rss_conf.queue,
                                      parser->rss_conf.queue_num,
-                                     parser->tunnel);
+                                     parser->tunnel,
+                                     parser->rss_conf.level);
                if (!flow->frxq[i].hrxq) {
                        return rte_flow_error_set(error, ENOMEM,
                                                  RTE_FLOW_ERROR_TYPE_HANDLE,
@@ -2083,7 +2142,7 @@ mlx5_flow_create_action_queue(struct rte_eth_dev *dev,
                DRV_LOG(DEBUG, "port %u %p type %d QP %p ibv_flow %p",
                        dev->data->port_id,
                        (void *)flow, i,
-                       (void *)flow->frxq[i].hrxq,
+                       (void *)flow->frxq[i].hrxq->qp,
                        (void *)flow->frxq[i].ibv_flow);
        }
        if (!flows_n) {
@@ -2611,19 +2670,21 @@ mlx5_flow_start(struct rte_eth_dev *dev, struct mlx5_flows *list)
                        flow->frxq[i].hrxq =
                                mlx5_hrxq_get(dev, flow->rss_conf.key,
                                              flow->rss_conf.key_len,
-                                             hash_rxq_init[i].hash_fields,
+                                             flow->frxq[i].hash_fields,
                                              flow->rss_conf.queue,
                                              flow->rss_conf.queue_num,
-                                             flow->tunnel);
+                                             flow->tunnel,
+                                             flow->rss_conf.level);
                        if (flow->frxq[i].hrxq)
                                goto flow_create;
                        flow->frxq[i].hrxq =
                                mlx5_hrxq_new(dev, flow->rss_conf.key,
                                              flow->rss_conf.key_len,
-                                             hash_rxq_init[i].hash_fields,
+                                             flow->frxq[i].hash_fields,
                                              flow->rss_conf.queue,
                                              flow->rss_conf.queue_num,
-                                             flow->tunnel);
+                                             flow->tunnel,
+                                             flow->rss_conf.level);
                        if (!flow->frxq[i].hrxq) {
                                DRV_LOG(DEBUG,
                                        "port %u flow %p cannot be applied",