Signed-off-by: Nelio Laranjeiro <nelio.laranje...@6wind.com>
Acked-by: Yongseok Koh <ys...@mellanox.com>
---
drivers/net/mlx5/mlx5_flow.c | 190 +++++++++++++++++++++++++++++------
drivers/net/mlx5/mlx5_rxtx.h | 1 +
2 files changed, 163 insertions(+), 28 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 84bd99b3e..7eb5d7da3 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -51,6 +51,9 @@ extern const struct eth_dev_ops mlx5_dev_ops_isolate;
#define MLX5_FLOW_LAYER_INNER_L4_TCP (1u << 10)
#define MLX5_FLOW_LAYER_INNER_VLAN (1u << 11)
+/* Pattern tunnel Layer bits. */
+#define MLX5_FLOW_LAYER_VXLAN (1u << 12)
+
/* Outer Masks. */
#define MLX5_FLOW_LAYER_OUTER_L3 \
(MLX5_FLOW_LAYER_OUTER_L3_IPV4 | MLX5_FLOW_LAYER_OUTER_L3_IPV6)
@@ -61,7 +64,7 @@ extern const struct eth_dev_ops mlx5_dev_ops_isolate;
MLX5_FLOW_LAYER_OUTER_L4)
/* Tunnel Masks. */
-#define MLX5_FLOW_LAYER_TUNNEL 0
+#define MLX5_FLOW_LAYER_TUNNEL MLX5_FLOW_LAYER_VXLAN
/* Inner Masks. */
#define MLX5_FLOW_LAYER_INNER_L3 \
@@ -98,6 +101,7 @@ enum mlx5_expansion {
MLX5_EXPANSION_OUTER_IPV6,
MLX5_EXPANSION_OUTER_IPV6_UDP,
MLX5_EXPANSION_OUTER_IPV6_TCP,
+ MLX5_EXPANSION_VXLAN,
MLX5_EXPANSION_ETH,
MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV4_UDP,
@@ -136,6 +140,7 @@ static const struct rte_flow_expand_node
mlx5_support_expansion[] = {
ETH_RSS_NONFRAG_IPV4_OTHER,
},
[MLX5_EXPANSION_OUTER_IPV4_UDP] = {
+ .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN),
.type = RTE_FLOW_ITEM_TYPE_UDP,
.rss_types = ETH_RSS_NONFRAG_IPV4_UDP,
},
@@ -152,6 +157,7 @@ static const struct rte_flow_expand_node
mlx5_support_expansion[] = {
ETH_RSS_NONFRAG_IPV6_OTHER,
},
[MLX5_EXPANSION_OUTER_IPV6_UDP] = {
+ .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_VXLAN),
.type = RTE_FLOW_ITEM_TYPE_UDP,
.rss_types = ETH_RSS_NONFRAG_IPV6_UDP,
},
@@ -159,6 +165,10 @@ static const struct rte_flow_expand_node
mlx5_support_expansion[] = {
.type = RTE_FLOW_ITEM_TYPE_TCP,
.rss_types = ETH_RSS_NONFRAG_IPV6_TCP,
},
+ [MLX5_EXPANSION_VXLAN] = {
+ .next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_ETH),
+ .type = RTE_FLOW_ITEM_TYPE_VXLAN,
+ },
[MLX5_EXPANSION_ETH] = {
.next = RTE_FLOW_EXPAND_RSS_NEXT(MLX5_EXPANSION_IPV4,
MLX5_EXPANSION_IPV6),
@@ -226,6 +236,8 @@ struct rte_flow {
struct mlx5_flow_verbs *cur_verbs;
/**< Current Verbs flow structure being filled. */
struct rte_flow_action_rss rss;/**< RSS context. */
+ uint32_t tunnel_ptype;
+ /**< Store tunnel packet type data to store in Rx queue. */
uint8_t key[MLX5_RSS_HASH_KEY_LEN]; /**< RSS hash key. */
uint16_t (*queue)[]; /**< Destination queues to redirect traffic to. */
};
@@ -1160,6 +1172,103 @@ mlx5_flow_item_tcp(const struct rte_flow_item *item,
struct rte_flow *flow,
return size;
}
+/**
+ * Convert the @p item into a Verbs specification after ensuring the NIC
+ * will understand and process it correctly.
+ * If the necessary size for the conversion is greater than the @p flow_size,
+ * nothing is written in @p flow, the validation is still performed.
+ *
+ * @param[in] item
+ * Item specification.
+ * @param[in, out] flow
+ * Pointer to flow structure.
+ * @param[in] flow_size
+ * Size in bytes of the available space in @p flow, if too small, nothing is
+ * written.
+ * @param[out] error
+ * Pointer to error structure.
+ *
+ * @return
+ * On success the number of bytes consumed/necessary, if the returned value
+ * is lesser or equal to @p flow_size, the @p item has fully been converted,
+ * otherwise another call with this returned memory size should be done.
+ * On error, a negative errno value is returned and rte_errno is set.
+ */
+static int
+mlx5_flow_item_vxlan(const struct rte_flow_item *item, struct rte_flow *flow,
+ const size_t flow_size, struct rte_flow_error *error)
+{
+ const struct rte_flow_item_vxlan *spec = item->spec;
+ const struct rte_flow_item_vxlan *mask = item->mask;
+ unsigned int size = sizeof(struct ibv_flow_spec_tunnel);
+ struct ibv_flow_spec_tunnel vxlan = {
+ .type = IBV_FLOW_SPEC_VXLAN_TUNNEL,
+ .size = size,
+ };
+ int ret;
+ union vni {
+ uint32_t vlan_id;
+ uint8_t vni[4];
+ } id = { .vlan_id = 0, };
+
+ if (flow->layers & MLX5_FLOW_LAYER_TUNNEL)
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "a tunnel is already present");
+ /*
+ * Verify only UDPv4 is present as defined in
+ * https://tools.ietf.org/html/rfc7348
+ */
+ if (!(flow->layers & MLX5_FLOW_LAYER_OUTER_L4_UDP))
+ return rte_flow_error_set(error, ENOTSUP,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "no outer UDP layer found");
+ if (!mask)
+ mask = &rte_flow_item_vxlan_mask;
+ ret = mlx5_flow_item_acceptable
+ (item, (const uint8_t *)mask,
+ (const uint8_t *)&rte_flow_item_vxlan_mask,
+ sizeof(struct rte_flow_item_vxlan), error);
+ if (ret < 0)
+ return ret;
+ if (spec) {
+ memcpy(&id.vni[1], spec->vni, 3);
+ vxlan.val.tunnel_id = id.vlan_id;
+ memcpy(&id.vni[1], mask->vni, 3);
+ vxlan.mask.tunnel_id = id.vlan_id;
+ /* Remove unwanted bits from values. */
+ vxlan.val.tunnel_id &= vxlan.mask.tunnel_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 (!vxlan.val.tunnel_id)
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "VXLAN vni cannot be 0");
+ if (!(flow->layers & MLX5_FLOW_LAYER_OUTER))
+ return rte_flow_error_set(error, EINVAL,
+ RTE_FLOW_ERROR_TYPE_ITEM,
+ item,
+ "VXLAN tunnel must be fully defined");
+ if (size <= flow_size) {
+ mlx5_flow_spec_verbs_add(flow, &vxlan, size);
+ flow->cur_verbs->attr->priority = MLX5_PRIORITY_MAP_L2;
+ }
+ flow->layers |= MLX5_FLOW_LAYER_VXLAN;
+ flow->tunnel_ptype = RTE_PTYPE_TUNNEL_VXLAN | RTE_PTYPE_L4_UDP;
+ return size;
+}
+
/**
* Convert the @p pattern into a Verbs specifications after ensuring the NIC
* will understand and process it correctly.
@@ -1217,6 +1326,10 @@ mlx5_flow_items(const struct rte_flow_item pattern[],
case RTE_FLOW_ITEM_TYPE_TCP:
ret = mlx5_flow_item_tcp(pattern, flow, remain, error);
break;
+ case RTE_FLOW_ITEM_TYPE_VXLAN:
+ ret = mlx5_flow_item_vxlan(pattern, flow, remain,
+ error);
+ break;
default:
return rte_flow_error_set(error, ENOTSUP,
RTE_FLOW_ERROR_TYPE_ITEM,
@@ -1832,7 +1945,7 @@ mlx5_flow_merge(struct rte_eth_dev *dev, struct rte_flow
*flow,
}
/**
- * Mark the Rx queues mark flag if the flow has a mark or flag modifier.
+ * Set the Rx queue flags (Mark/Flag and Tunnel Ptypes) according to the flow.
*
* @param[in] dev
* Pointer to Ethernet device.
@@ -1840,28 +1953,34 @@ mlx5_flow_merge(struct rte_eth_dev *dev, struct
rte_flow *flow,
* Pointer to flow structure.
*/
static void
-mlx5_flow_rxq_mark_set(struct rte_eth_dev *dev, struct rte_flow *flow)
+mlx5_flow_rxq_flags_set(struct rte_eth_dev *dev, struct rte_flow *flow)
{
struct priv *priv = dev->data->dev_private;
+ const int mark = !!(flow->modifier &
+ (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK));
+ const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL);
+ unsigned int i;
- if (flow->modifier & (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK)) {
- unsigned int i;
-
- for (i = 0; i != flow->rss.queue_num; ++i) {
- int idx = (*flow->queue)[i];
- struct mlx5_rxq_ctrl *rxq_ctrl =
- container_of((*priv->rxqs)[idx],
- struct mlx5_rxq_ctrl, rxq);
+ for (i = 0; i != flow->rss.queue_num; ++i) {
+ int idx = (*flow->queue)[i];
+ struct mlx5_rxq_ctrl *rxq_ctrl =
+ container_of((*priv->rxqs)[idx],
+ struct mlx5_rxq_ctrl, rxq);
+ if (mark) {
rxq_ctrl->rxq.mark = 1;
rxq_ctrl->flow_mark_n++;
}
+ if (tunnel) {
+ rxq_ctrl->rxq.tunnel = flow->tunnel_ptype;
+ rxq_ctrl->flow_vxlan_n++;
+ }
}
}
/**
- * Clear the Rx queue mark associated with the @p flow if no other flow uses
- * it with a mark request.
+ * Clear the Rx queue flags (Mark/Flag and Tunnel Ptype) associated with the
+ * @p flow if no other flow uses it with the same kind of request.
*
* @param dev
* Pointer to Ethernet device.
@@ -1869,33 +1988,41 @@ mlx5_flow_rxq_mark_set(struct rte_eth_dev *dev, struct
rte_flow *flow)
* Pointer to the flow.
*/
static void
-mlx5_flow_rxq_mark_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
+mlx5_flow_rxq_flags_trim(struct rte_eth_dev *dev, struct rte_flow *flow)
{
struct priv *priv = dev->data->dev_private;
+ const int mark = !!(flow->modifier &
+ (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK));
+ const int tunnel = !!(flow->layers & MLX5_FLOW_LAYER_TUNNEL);
+ unsigned int i;
- if (flow->modifier & (MLX5_FLOW_MOD_FLAG | MLX5_FLOW_MOD_MARK)) {
- unsigned int i;
-
- for (i = 0; i != flow->rss.queue_num; ++i) {
- int idx = (*flow->queue)[i];
- struct mlx5_rxq_ctrl *rxq_ctrl =
- container_of((*priv->rxqs)[idx],
- struct mlx5_rxq_ctrl, rxq);
+ assert(dev->data->dev_started);
+ for (i = 0; i != flow->rss.queue_num; ++i) {
+ int idx = (*flow->queue)[i];
+ struct mlx5_rxq_ctrl *rxq_ctrl =
+ container_of((*priv->rxqs)[idx],
+ struct mlx5_rxq_ctrl, rxq);
+ if (mark) {
rxq_ctrl->flow_mark_n--;
rxq_ctrl->rxq.mark = !!rxq_ctrl->flow_mark_n;
}
+ if (tunnel) {
+ rxq_ctrl->flow_vxlan_n++;
+ if (!rxq_ctrl->flow_vxlan_n)
+ rxq_ctrl->rxq.tunnel = 0;
+ }
}
}
/**
- * Clear the mark bit in all Rx queues.
+ * Clear the Mark/Flag and Tunnel ptype information in all Rx queues.
*
* @param dev
* Pointer to Ethernet device.
*/
static void
-mlx5_flow_rxq_mark_clear(struct rte_eth_dev *dev)
+mlx5_flow_rxq_flags_clear(struct rte_eth_dev *dev)
{
struct priv *priv = dev->data->dev_private;
unsigned int i;
@@ -1910,6 +2037,8 @@ mlx5_flow_rxq_mark_clear(struct rte_eth_dev *dev)
struct mlx5_rxq_ctrl, rxq);
rxq_ctrl->flow_mark_n = 0;
rxq_ctrl->rxq.mark = 0;
+ rxq_ctrl->flow_vxlan_n = 0;
+ rxq_ctrl->rxq.tunnel = 0;
++idx;
}
}
@@ -2105,7 +2234,7 @@ mlx5_flow_list_create(struct rte_eth_dev *dev,
}
}
TAILQ_INSERT_TAIL(list, flow, next);
- mlx5_flow_rxq_mark_set(dev, flow);
+ mlx5_flow_rxq_flags_set(dev, flow);
return flow;
}
@@ -2143,7 +2272,12 @@ mlx5_flow_list_destroy(struct rte_eth_dev *dev, struct
mlx5_flows *list,
{
mlx5_flow_remove(dev, flow);
TAILQ_REMOVE(list, flow, next);
- mlx5_flow_rxq_mark_trim(dev, flow);
+ /*
+ * Update RX queue flags only if port is started, otherwise it is
+ * already clean.
+ */
+ if (dev->data->dev_started)
+ mlx5_flow_rxq_flags_trim(dev, flow);
rte_free(flow);
}
@@ -2181,7 +2315,7 @@ mlx5_flow_stop(struct rte_eth_dev *dev, struct mlx5_flows
*list)
TAILQ_FOREACH_REVERSE(flow, list, mlx5_flows, next)
mlx5_flow_remove(dev, flow);
- mlx5_flow_rxq_mark_clear(dev);
+ mlx5_flow_rxq_flags_clear(dev);
}
/**
@@ -2206,7 +2340,7 @@ mlx5_flow_start(struct rte_eth_dev *dev, struct
mlx5_flows *list)
ret = mlx5_flow_apply(dev, flow, &error);
if (ret < 0)
goto error;
- mlx5_flow_rxq_mark_set(dev, flow);
+ mlx5_flow_rxq_flags_set(dev, flow);
}
return 0;
error:
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 808118e50..ae9b564dd 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -139,6 +139,7 @@ struct mlx5_rxq_ctrl {
unsigned int irq:1; /* Whether IRQ is enabled. */
uint16_t idx; /* Queue index. */
uint32_t flow_mark_n; /* Number of Mark/Flag flows using this Queue. */
+ uint32_t flow_vxlan_n; /* Number of VXLAN flows using this queue. */
};
/* Indirection table. */
--
2.18.0
